A computed peak value based on the sum squared magnitude of
the underlying value in the specified directions.
+What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_raw
+What: /sys/bus/iio/devices/iio:deviceX/in_pressure_raw
+KernelVersion: 3.8
+Contact: linux-iio@vger.kernel.org
+Description:
+ Raw pressure measurement from channel Y. Units after
+ application of scale and offset are kilopascal.
+
What: /sys/bus/iio/devices/iio:deviceX/in_accel_offset
What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_offset
What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_offset
What: /sys/bus/iio/devices/iio:deviceX/in_voltage_offset
What: /sys/bus/iio/devices/iio:deviceX/in_tempY_offset
What: /sys/bus/iio/devices/iio:deviceX/in_temp_offset
+What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_offset
+What: /sys/bus/iio/devices/iio:deviceX/in_pressure_offset
KernelVersion: 2.6.35
Contact: linux-iio@vger.kernel.org
Description:
What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_scale
What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_scale
What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_scale
+What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_scale
+What: /sys/bus/iio/devices/iio:deviceX/in_pressure_scale
KernelVersion: 2.6.35
Contact: linux-iio@vger.kernel.org
Description:
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibbias
What: /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibbias
What: /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibbias
+What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibbias
+What: /sys/bus/iio/devices/iio:deviceX/in_pressure_calibbias
KernelVersion: 2.6.35
Contact: linux-iio@vger.kernel.org
Description:
What /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibscale
what /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibscale
what /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibscale
+What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibscale
+What: /sys/bus/iio/devices/iio:deviceX/in_pressure_calibscale
KernelVersion: 2.6.35
Contact: linux-iio@vger.kernel.org
Description:
What: /sys/.../iio:deviceX/out_voltageX_scale_available
What: /sys/.../iio:deviceX/out_altvoltageX_scale_available
What: /sys/.../iio:deviceX/in_capacitance_scale_available
+What: /sys/.../iio:deviceX/in_pressure_scale_available
+What: /sys/.../iio:deviceX/in_pressureY_scale_available
KernelVersion: 2.6.35
Contact: linux-iio@vger.kernel.org
Description:
What: /sys/.../buffer/scan_elements/in_voltageY-voltageZ_en
What: /sys/.../buffer/scan_elements/in_incli_x_en
What: /sys/.../buffer/scan_elements/in_incli_y_en
+What: /sys/.../buffer/scan_elements/in_pressureY_en
+What: /sys/.../buffer/scan_elements/in_pressure_en
KernelVersion: 2.6.37
Contact: linux-iio@vger.kernel.org
Description:
What: /sys/.../buffer/scan_elements/in_voltage_type
What: /sys/.../buffer/scan_elements/in_voltageY_supply_type
What: /sys/.../buffer/scan_elements/in_timestamp_type
+What: /sys/.../buffer/scan_elements/in_pressureY_type
+What: /sys/.../buffer/scan_elements/in_pressure_type
KernelVersion: 2.6.37
Contact: linux-iio@vger.kernel.org
Description:
What: /sys/.../buffer/scan_elements/in_incli_x_index
What: /sys/.../buffer/scan_elements/in_incli_y_index
What: /sys/.../buffer/scan_elements/in_timestamp_index
+What: /sys/.../buffer/scan_elements/in_pressureY_index
+What: /sys/.../buffer/scan_elements/in_pressure_index
KernelVersion: 2.6.37
Contact: linux-iio@vger.kernel.org
Description:
source "drivers/iio/accel/Kconfig"
source "drivers/iio/adc/Kconfig"
source "drivers/iio/amplifiers/Kconfig"
-source "drivers/iio/light/Kconfig"
-source "drivers/iio/frequency/Kconfig"
-source "drivers/iio/dac/Kconfig"
source "drivers/iio/common/Kconfig"
+source "drivers/iio/dac/Kconfig"
+source "drivers/iio/frequency/Kconfig"
source "drivers/iio/gyro/Kconfig"
+source "drivers/iio/imu/Kconfig"
+source "drivers/iio/light/Kconfig"
source "drivers/iio/magnetometer/Kconfig"
endif # IIO
obj-y += accel/
obj-y += adc/
obj-y += amplifiers/
-obj-y += light/
-obj-y += frequency/
-obj-y += dac/
obj-y += common/
+obj-y += dac/
obj-y += gyro/
+obj-y += frequency/
+obj-y += imu/
+obj-y += light/
obj-y += magnetometer/
goto error_free_dev;
}
- channels = kmemdup(accel_3d_channels,
- sizeof(accel_3d_channels),
- GFP_KERNEL);
+ channels = kmemdup(accel_3d_channels, sizeof(accel_3d_channels),
+ GFP_KERNEL);
if (!channels) {
+ ret = -ENOMEM;
dev_err(&pdev->dev, "failed to duplicate channels\n");
goto error_free_dev;
}
Say yes here to build support for Analog Devices AD7265 and AD7266
ADCs.
+config AD7298
+ tristate "Analog Devices AD7298 ADC driver"
+ depends on SPI
+ select IIO_BUFFER
+ select IIO_TRIGGERED_BUFFER
+ help
+ Say yes here to build support for Analog Devices AD7298
+ 8 Channel ADC with temperature sensor.
+
+ To compile this driver as a module, choose M here: the
+ module will be called ad7298.
+
config AD7791
tristate "Analog Devices AD7791 ADC driver"
depends on SPI
obj-$(CONFIG_AD_SIGMA_DELTA) += ad_sigma_delta.o
obj-$(CONFIG_AD7266) += ad7266.o
+obj-$(CONFIG_AD7298) += ad7298.o
obj-$(CONFIG_AD7476) += ad7476.o
obj-$(CONFIG_AD7791) += ad7791.o
obj-$(CONFIG_AD7887) += ad7887.o
--- /dev/null
+/*
+ * AD7298 SPI ADC driver
+ *
+ * Copyright 2011 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2.
+ */
+
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
+#include <linux/spi/spi.h>
+#include <linux/regulator/consumer.h>
+#include <linux/err.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
+
+#include <linux/platform_data/ad7298.h>
+
+#define AD7298_WRITE (1 << 15) /* write to the control register */
+#define AD7298_REPEAT (1 << 14) /* repeated conversion enable */
+#define AD7298_CH(x) (1 << (13 - (x))) /* channel select */
+#define AD7298_TSENSE (1 << 5) /* temperature conversion enable */
+#define AD7298_EXTREF (1 << 2) /* external reference enable */
+#define AD7298_TAVG (1 << 1) /* temperature sensor averaging enable */
+#define AD7298_PDD (1 << 0) /* partial power down enable */
+
+#define AD7298_MAX_CHAN 8
+#define AD7298_BITS 12
+#define AD7298_STORAGE_BITS 16
+#define AD7298_INTREF_mV 2500
+
+#define AD7298_CH_TEMP 9
+
+#define RES_MASK(bits) ((1 << (bits)) - 1)
+
+struct ad7298_state {
+ struct spi_device *spi;
+ struct regulator *reg;
+ unsigned ext_ref;
+ struct spi_transfer ring_xfer[10];
+ struct spi_transfer scan_single_xfer[3];
+ struct spi_message ring_msg;
+ struct spi_message scan_single_msg;
+ /*
+ * DMA (thus cache coherency maintenance) requires the
+ * transfer buffers to live in their own cache lines.
+ */
+ __be16 rx_buf[12] ____cacheline_aligned;
+ __be16 tx_buf[2];
+};
+
+#define AD7298_V_CHAN(index) \
+ { \
+ .type = IIO_VOLTAGE, \
+ .indexed = 1, \
+ .channel = index, \
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT | \
+ IIO_CHAN_INFO_SCALE_SHARED_BIT, \
+ .address = index, \
+ .scan_index = index, \
+ .scan_type = { \
+ .sign = 'u', \
+ .realbits = 12, \
+ .storagebits = 16, \
+ .endianness = IIO_BE, \
+ }, \
+ }
+
+static const struct iio_chan_spec ad7298_channels[] = {
+ {
+ .type = IIO_TEMP,
+ .indexed = 1,
+ .channel = 0,
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
+ IIO_CHAN_INFO_SCALE_SEPARATE_BIT |
+ IIO_CHAN_INFO_OFFSET_SEPARATE_BIT,
+ .address = AD7298_CH_TEMP,
+ .scan_index = -1,
+ .scan_type = {
+ .sign = 's',
+ .realbits = 32,
+ .storagebits = 32,
+ },
+ },
+ AD7298_V_CHAN(0),
+ AD7298_V_CHAN(1),
+ AD7298_V_CHAN(2),
+ AD7298_V_CHAN(3),
+ AD7298_V_CHAN(4),
+ AD7298_V_CHAN(5),
+ AD7298_V_CHAN(6),
+ AD7298_V_CHAN(7),
+ IIO_CHAN_SOFT_TIMESTAMP(8),
+};
+
+/**
+ * ad7298_update_scan_mode() setup the spi transfer buffer for the new scan mask
+ **/
+static int ad7298_update_scan_mode(struct iio_dev *indio_dev,
+ const unsigned long *active_scan_mask)
+{
+ struct ad7298_state *st = iio_priv(indio_dev);
+ int i, m;
+ unsigned short command;
+ int scan_count;
+
+ /* Now compute overall size */
+ scan_count = bitmap_weight(active_scan_mask, indio_dev->masklength);
+
+ command = AD7298_WRITE | st->ext_ref;
+
+ for (i = 0, m = AD7298_CH(0); i < AD7298_MAX_CHAN; i++, m >>= 1)
+ if (test_bit(i, active_scan_mask))
+ command |= m;
+
+ st->tx_buf[0] = cpu_to_be16(command);
+
+ /* build spi ring message */
+ st->ring_xfer[0].tx_buf = &st->tx_buf[0];
+ st->ring_xfer[0].len = 2;
+ st->ring_xfer[0].cs_change = 1;
+ st->ring_xfer[1].tx_buf = &st->tx_buf[1];
+ st->ring_xfer[1].len = 2;
+ st->ring_xfer[1].cs_change = 1;
+
+ spi_message_init(&st->ring_msg);
+ spi_message_add_tail(&st->ring_xfer[0], &st->ring_msg);
+ spi_message_add_tail(&st->ring_xfer[1], &st->ring_msg);
+
+ for (i = 0; i < scan_count; i++) {
+ st->ring_xfer[i + 2].rx_buf = &st->rx_buf[i];
+ st->ring_xfer[i + 2].len = 2;
+ st->ring_xfer[i + 2].cs_change = 1;
+ spi_message_add_tail(&st->ring_xfer[i + 2], &st->ring_msg);
+ }
+ /* make sure last transfer cs_change is not set */
+ st->ring_xfer[i + 1].cs_change = 0;
+
+ return 0;
+}
+
+/**
+ * ad7298_trigger_handler() bh of trigger launched polling to ring buffer
+ *
+ * Currently there is no option in this driver to disable the saving of
+ * timestamps within the ring.
+ **/
+static irqreturn_t ad7298_trigger_handler(int irq, void *p)
+{
+ struct iio_poll_func *pf = p;
+ struct iio_dev *indio_dev = pf->indio_dev;
+ struct ad7298_state *st = iio_priv(indio_dev);
+ s64 time_ns = 0;
+ int b_sent;
+
+ b_sent = spi_sync(st->spi, &st->ring_msg);
+ if (b_sent)
+ goto done;
+
+ if (indio_dev->scan_timestamp) {
+ time_ns = iio_get_time_ns();
+ memcpy((u8 *)st->rx_buf + indio_dev->scan_bytes - sizeof(s64),
+ &time_ns, sizeof(time_ns));
+ }
+
+ iio_push_to_buffers(indio_dev, (u8 *)st->rx_buf);
+
+done:
+ iio_trigger_notify_done(indio_dev->trig);
+
+ return IRQ_HANDLED;
+}
+
+static int ad7298_scan_direct(struct ad7298_state *st, unsigned ch)
+{
+ int ret;
+ st->tx_buf[0] = cpu_to_be16(AD7298_WRITE | st->ext_ref |
+ (AD7298_CH(0) >> ch));
+
+ ret = spi_sync(st->spi, &st->scan_single_msg);
+ if (ret)
+ return ret;
+
+ return be16_to_cpu(st->rx_buf[0]);
+}
+
+static int ad7298_scan_temp(struct ad7298_state *st, int *val)
+{
+ int ret;
+ __be16 buf;
+
+ buf = cpu_to_be16(AD7298_WRITE | AD7298_TSENSE |
+ AD7298_TAVG | st->ext_ref);
+
+ ret = spi_write(st->spi, (u8 *)&buf, 2);
+ if (ret)
+ return ret;
+
+ buf = cpu_to_be16(0);
+
+ ret = spi_write(st->spi, (u8 *)&buf, 2);
+ if (ret)
+ return ret;
+
+ usleep_range(101, 1000); /* sleep > 100us */
+
+ ret = spi_read(st->spi, (u8 *)&buf, 2);
+ if (ret)
+ return ret;
+
+ *val = sign_extend32(be16_to_cpu(buf), 11);
+
+ return 0;
+}
+
+static int ad7298_get_ref_voltage(struct ad7298_state *st)
+{
+ int vref;
+
+ if (st->ext_ref) {
+ vref = regulator_get_voltage(st->reg);
+ if (vref < 0)
+ return vref;
+
+ return vref / 1000;
+ } else {
+ return AD7298_INTREF_mV;
+ }
+}
+
+static int ad7298_read_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int *val,
+ int *val2,
+ long m)
+{
+ int ret;
+ struct ad7298_state *st = iio_priv(indio_dev);
+
+ switch (m) {
+ case IIO_CHAN_INFO_RAW:
+ mutex_lock(&indio_dev->mlock);
+ if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED) {
+ ret = -EBUSY;
+ } else {
+ if (chan->address == AD7298_CH_TEMP)
+ ret = ad7298_scan_temp(st, val);
+ else
+ ret = ad7298_scan_direct(st, chan->address);
+ }
+ mutex_unlock(&indio_dev->mlock);
+
+ if (ret < 0)
+ return ret;
+
+ if (chan->address != AD7298_CH_TEMP)
+ *val = ret & RES_MASK(AD7298_BITS);
+
+ return IIO_VAL_INT;
+ case IIO_CHAN_INFO_SCALE:
+ switch (chan->type) {
+ case IIO_VOLTAGE:
+ *val = ad7298_get_ref_voltage(st);
+ *val2 = chan->scan_type.realbits;
+ return IIO_VAL_FRACTIONAL_LOG2;
+ case IIO_TEMP:
+ *val = ad7298_get_ref_voltage(st);
+ *val2 = 10;
+ return IIO_VAL_FRACTIONAL;
+ default:
+ return -EINVAL;
+ }
+ case IIO_CHAN_INFO_OFFSET:
+ *val = 1093 - 2732500 / ad7298_get_ref_voltage(st);
+ return IIO_VAL_INT;
+ }
+ return -EINVAL;
+}
+
+static const struct iio_info ad7298_info = {
+ .read_raw = &ad7298_read_raw,
+ .update_scan_mode = ad7298_update_scan_mode,
+ .driver_module = THIS_MODULE,
+};
+
+static int __devinit ad7298_probe(struct spi_device *spi)
+{
+ struct ad7298_platform_data *pdata = spi->dev.platform_data;
+ struct ad7298_state *st;
+ struct iio_dev *indio_dev = iio_device_alloc(sizeof(*st));
+ int ret;
+
+ if (indio_dev == NULL)
+ return -ENOMEM;
+
+ st = iio_priv(indio_dev);
+
+ if (pdata && pdata->ext_ref)
+ st->ext_ref = AD7298_EXTREF;
+
+ if (st->ext_ref) {
+ st->reg = regulator_get(&spi->dev, "vref");
+ if (IS_ERR(st->reg)) {
+ ret = PTR_ERR(st->reg);
+ goto error_free;
+ }
+ ret = regulator_enable(st->reg);
+ if (ret)
+ goto error_put_reg;
+ }
+
+ spi_set_drvdata(spi, indio_dev);
+
+ st->spi = spi;
+
+ indio_dev->name = spi_get_device_id(spi)->name;
+ indio_dev->dev.parent = &spi->dev;
+ indio_dev->modes = INDIO_DIRECT_MODE;
+ indio_dev->channels = ad7298_channels;
+ indio_dev->num_channels = ARRAY_SIZE(ad7298_channels);
+ indio_dev->info = &ad7298_info;
+
+ /* Setup default message */
+
+ st->scan_single_xfer[0].tx_buf = &st->tx_buf[0];
+ st->scan_single_xfer[0].len = 2;
+ st->scan_single_xfer[0].cs_change = 1;
+ st->scan_single_xfer[1].tx_buf = &st->tx_buf[1];
+ st->scan_single_xfer[1].len = 2;
+ st->scan_single_xfer[1].cs_change = 1;
+ st->scan_single_xfer[2].rx_buf = &st->rx_buf[0];
+ st->scan_single_xfer[2].len = 2;
+
+ spi_message_init(&st->scan_single_msg);
+ spi_message_add_tail(&st->scan_single_xfer[0], &st->scan_single_msg);
+ spi_message_add_tail(&st->scan_single_xfer[1], &st->scan_single_msg);
+ spi_message_add_tail(&st->scan_single_xfer[2], &st->scan_single_msg);
+
+ ret = iio_triggered_buffer_setup(indio_dev, NULL,
+ &ad7298_trigger_handler, NULL);
+ if (ret)
+ goto error_disable_reg;
+
+ ret = iio_device_register(indio_dev);
+ if (ret)
+ goto error_cleanup_ring;
+
+ return 0;
+
+error_cleanup_ring:
+ iio_triggered_buffer_cleanup(indio_dev);
+error_disable_reg:
+ if (st->ext_ref)
+ regulator_disable(st->reg);
+error_put_reg:
+ if (st->ext_ref)
+ regulator_put(st->reg);
+error_free:
+ iio_device_free(indio_dev);
+
+ return ret;
+}
+
+static int __devexit ad7298_remove(struct spi_device *spi)
+{
+ struct iio_dev *indio_dev = spi_get_drvdata(spi);
+ struct ad7298_state *st = iio_priv(indio_dev);
+
+ iio_device_unregister(indio_dev);
+ iio_triggered_buffer_cleanup(indio_dev);
+ if (st->ext_ref) {
+ regulator_disable(st->reg);
+ regulator_put(st->reg);
+ }
+ iio_device_free(indio_dev);
+
+ return 0;
+}
+
+static const struct spi_device_id ad7298_id[] = {
+ {"ad7298", 0},
+ {}
+};
+MODULE_DEVICE_TABLE(spi, ad7298_id);
+
+static struct spi_driver ad7298_driver = {
+ .driver = {
+ .name = "ad7298",
+ .owner = THIS_MODULE,
+ },
+ .probe = ad7298_probe,
+ .remove = __devexit_p(ad7298_remove),
+ .id_table = ad7298_id,
+};
+module_spi_driver(ad7298_driver);
+
+MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
+MODULE_DESCRIPTION("Analog Devices AD7298 ADC");
+MODULE_LICENSE("GPL v2");
attributes.
config HID_SENSOR_ENUM_BASE_QUIRKS
- tristate "ENUM base quirks for HID Sensor IIO drivers"
+ bool "ENUM base quirks for HID Sensor IIO drivers"
depends on HID_SENSOR_IIO_COMMON
help
Say yes here to build support for sensor hub FW using
int state_val;
state_val = state ? 1 : 0;
-#if (defined CONFIG_HID_SENSOR_ENUM_BASE_QUIRKS) || \
- (defined CONFIG_HID_SENSOR_ENUM_BASE_QUIRKS_MODULE)
- ++state_val;
-#endif
+ if (IS_ENABLED(CONFIG_HID_SENSOR_ENUM_BASE_QUIRKS))
+ ++state_val;
st->data_ready = state;
sensor_hub_set_feature(st->hsdev, st->power_state.report_id,
st->power_state.index,
#
menu "Digital gyroscope sensors"
+config ADIS16136
+ tristate "Analog devices ADIS16136 and similar gyroscopes driver"
+ depends on SPI_MASTER
+ select IIO_ADIS_LIB
+ select IIO_ADIS_LIB_BUFFER if IIO_BUFFER
+ help
+ Say yes here to build support for the Analog Devices ADIS16133, ADIS16135,
+ ADIS16136 gyroscope devices.
+
config HID_SENSOR_GYRO_3D
depends on HID_SENSOR_HUB
select IIO_BUFFER
# Makefile for industrial I/O gyroscope sensor drivers
#
+obj-$(CONFIG_ADIS16136) += adis16136.o
obj-$(CONFIG_HID_SENSOR_GYRO_3D) += hid-sensor-gyro-3d.o
--- /dev/null
+/*
+ * ADIS16133/ADIS16135/ADIS16136 gyroscope driver
+ *
+ * Copyright 2012 Analog Devices Inc.
+ * Author: Lars-Peter Clausen <lars@metafoo.de>
+ *
+ * Licensed under the GPL-2.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/mutex.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/spi/spi.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
+#include <linux/module.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/imu/adis.h>
+
+#include <linux/iio/iio.h>
+#include <linux/debugfs.h>
+
+#define ADIS16136_REG_FLASH_CNT 0x00
+#define ADIS16136_REG_TEMP_OUT 0x02
+#define ADIS16136_REG_GYRO_OUT2 0x04
+#define ADIS16136_REG_GYRO_OUT 0x06
+#define ADIS16136_REG_GYRO_OFF2 0x08
+#define ADIS16136_REG_GYRO_OFF 0x0A
+#define ADIS16136_REG_ALM_MAG1 0x10
+#define ADIS16136_REG_ALM_MAG2 0x12
+#define ADIS16136_REG_ALM_SAMPL1 0x14
+#define ADIS16136_REG_ALM_SAMPL2 0x16
+#define ADIS16136_REG_ALM_CTRL 0x18
+#define ADIS16136_REG_GPIO_CTRL 0x1A
+#define ADIS16136_REG_MSC_CTRL 0x1C
+#define ADIS16136_REG_SMPL_PRD 0x1E
+#define ADIS16136_REG_AVG_CNT 0x20
+#define ADIS16136_REG_DEC_RATE 0x22
+#define ADIS16136_REG_SLP_CTRL 0x24
+#define ADIS16136_REG_DIAG_STAT 0x26
+#define ADIS16136_REG_GLOB_CMD 0x28
+#define ADIS16136_REG_LOT1 0x32
+#define ADIS16136_REG_LOT2 0x34
+#define ADIS16136_REG_LOT3 0x36
+#define ADIS16136_REG_PROD_ID 0x38
+#define ADIS16136_REG_SERIAL_NUM 0x3A
+
+#define ADIS16136_DIAG_STAT_FLASH_UPDATE_FAIL 2
+#define ADIS16136_DIAG_STAT_SPI_FAIL 3
+#define ADIS16136_DIAG_STAT_SELF_TEST_FAIL 5
+#define ADIS16136_DIAG_STAT_FLASH_CHKSUM_FAIL 6
+
+#define ADIS16136_MSC_CTRL_MEMORY_TEST BIT(11)
+#define ADIS16136_MSC_CTRL_SELF_TEST BIT(10)
+
+struct adis16136_chip_info {
+ unsigned int precision;
+ unsigned int fullscale;
+};
+
+struct adis16136 {
+ const struct adis16136_chip_info *chip_info;
+
+ struct adis adis;
+};
+
+#ifdef CONFIG_DEBUG_FS
+
+static ssize_t adis16136_show_serial(struct file *file,
+ char __user *userbuf, size_t count, loff_t *ppos)
+{
+ struct adis16136 *adis16136 = file->private_data;
+ uint16_t lot1, lot2, lot3, serial;
+ char buf[20];
+ size_t len;
+ int ret;
+
+ ret = adis_read_reg_16(&adis16136->adis, ADIS16136_REG_SERIAL_NUM,
+ &serial);
+ if (ret < 0)
+ return ret;
+
+ ret = adis_read_reg_16(&adis16136->adis, ADIS16136_REG_LOT1, &lot1);
+ if (ret < 0)
+ return ret;
+
+ ret = adis_read_reg_16(&adis16136->adis, ADIS16136_REG_LOT2, &lot2);
+ if (ret < 0)
+ return ret;
+
+ ret = adis_read_reg_16(&adis16136->adis, ADIS16136_REG_LOT3, &lot3);
+ if (ret < 0)
+ return ret;
+
+ len = snprintf(buf, sizeof(buf), "%.4x%.4x%.4x-%.4x\n", lot1, lot2,
+ lot3, serial);
+
+ return simple_read_from_buffer(userbuf, count, ppos, buf, len);
+}
+
+static const struct file_operations adis16136_serial_fops = {
+ .open = simple_open,
+ .read = adis16136_show_serial,
+ .llseek = default_llseek,
+ .owner = THIS_MODULE,
+};
+
+static int adis16136_show_product_id(void *arg, u64 *val)
+{
+ struct adis16136 *adis16136 = arg;
+ u16 prod_id;
+ int ret;
+
+ ret = adis_read_reg_16(&adis16136->adis, ADIS16136_REG_PROD_ID,
+ &prod_id);
+ if (ret < 0)
+ return ret;
+
+ *val = prod_id;
+
+ return 0;
+}
+DEFINE_SIMPLE_ATTRIBUTE(adis16136_product_id_fops,
+ adis16136_show_product_id, NULL, "%llu\n");
+
+static int adis16136_show_flash_count(void *arg, u64 *val)
+{
+ struct adis16136 *adis16136 = arg;
+ uint16_t flash_count;
+ int ret;
+
+ ret = adis_read_reg_16(&adis16136->adis, ADIS16136_REG_FLASH_CNT,
+ &flash_count);
+ if (ret < 0)
+ return ret;
+
+ *val = flash_count;
+
+ return 0;
+}
+DEFINE_SIMPLE_ATTRIBUTE(adis16136_flash_count_fops,
+ adis16136_show_flash_count, NULL, "%lld\n");
+
+static int adis16136_debugfs_init(struct iio_dev *indio_dev)
+{
+ struct adis16136 *adis16136 = iio_priv(indio_dev);
+
+ debugfs_create_file("serial_number", 0400, indio_dev->debugfs_dentry,
+ adis16136, &adis16136_serial_fops);
+ debugfs_create_file("product_id", 0400, indio_dev->debugfs_dentry,
+ adis16136, &adis16136_product_id_fops);
+ debugfs_create_file("flash_count", 0400, indio_dev->debugfs_dentry,
+ adis16136, &adis16136_flash_count_fops);
+
+ return 0;
+}
+
+#else
+
+static int adis16136_debugfs_init(struct iio_dev *indio_dev)
+{
+ return 0;
+}
+
+#endif
+
+static int adis16136_set_freq(struct adis16136 *adis16136, unsigned int freq)
+{
+ unsigned int t;
+
+ t = 32768 / freq;
+ if (t < 0xf)
+ t = 0xf;
+ else if (t > 0xffff)
+ t = 0xffff;
+ else
+ t--;
+
+ return adis_write_reg_16(&adis16136->adis, ADIS16136_REG_SMPL_PRD, t);
+}
+
+static int adis16136_get_freq(struct adis16136 *adis16136, unsigned int *freq)
+{
+ uint16_t t;
+ int ret;
+
+ ret = adis_read_reg_16(&adis16136->adis, ADIS16136_REG_SMPL_PRD, &t);
+ if (ret < 0)
+ return ret;
+
+ *freq = 32768 / (t + 1);
+
+ return 0;
+}
+
+static ssize_t adis16136_write_frequency(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t len)
+{
+ struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+ struct adis16136 *adis16136 = iio_priv(indio_dev);
+ long val;
+ int ret;
+
+ ret = kstrtol(buf, 10, &val);
+ if (ret)
+ return ret;
+
+ if (val == 0)
+ return -EINVAL;
+
+ ret = adis16136_set_freq(adis16136, val);
+
+ return ret ? ret : len;
+}
+
+static ssize_t adis16136_read_frequency(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+ struct adis16136 *adis16136 = iio_priv(indio_dev);
+ unsigned int freq;
+ int ret;
+
+ ret = adis16136_get_freq(adis16136, &freq);
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%d\n", freq);
+}
+
+static IIO_DEV_ATTR_SAMP_FREQ(S_IWUSR | S_IRUGO,
+ adis16136_read_frequency,
+ adis16136_write_frequency);
+
+static const unsigned adis16136_3db_divisors[] = {
+ [0] = 2, /* Special case */
+ [1] = 6,
+ [2] = 12,
+ [3] = 25,
+ [4] = 50,
+ [5] = 100,
+ [6] = 200,
+ [7] = 200, /* Not a valid setting */
+};
+
+static int adis16136_set_filter(struct iio_dev *indio_dev, int val)
+{
+ struct adis16136 *adis16136 = iio_priv(indio_dev);
+ unsigned int freq;
+ int i, ret;
+
+ ret = adis16136_get_freq(adis16136, &freq);
+ if (ret < 0)
+ return ret;
+
+ for (i = ARRAY_SIZE(adis16136_3db_divisors) - 1; i >= 1; i--) {
+ if (freq / adis16136_3db_divisors[i] >= val)
+ break;
+ }
+
+ return adis_write_reg_16(&adis16136->adis, ADIS16136_REG_AVG_CNT, i);
+}
+
+static int adis16136_get_filter(struct iio_dev *indio_dev, int *val)
+{
+ struct adis16136 *adis16136 = iio_priv(indio_dev);
+ unsigned int freq;
+ uint16_t val16;
+ int ret;
+
+ mutex_lock(&indio_dev->mlock);
+
+ ret = adis_read_reg_16(&adis16136->adis, ADIS16136_REG_AVG_CNT, &val16);
+ if (ret < 0)
+ goto err_unlock;
+
+ ret = adis16136_get_freq(adis16136, &freq);
+ if (ret < 0)
+ goto err_unlock;
+
+ *val = freq / adis16136_3db_divisors[val16 & 0x07];
+
+err_unlock:
+ mutex_unlock(&indio_dev->mlock);
+
+ return ret ? ret : IIO_VAL_INT;
+}
+
+static int adis16136_read_raw(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan, int *val, int *val2, long info)
+{
+ struct adis16136 *adis16136 = iio_priv(indio_dev);
+ uint32_t val32;
+ int ret;
+
+ switch (info) {
+ case IIO_CHAN_INFO_RAW:
+ return adis_single_conversion(indio_dev, chan, 0, val);
+ case IIO_CHAN_INFO_SCALE:
+ switch (chan->type) {
+ case IIO_ANGL_VEL:
+ *val = adis16136->chip_info->precision;
+ *val2 = (adis16136->chip_info->fullscale << 16);
+ return IIO_VAL_FRACTIONAL;
+ case IIO_TEMP:
+ *val = 10;
+ *val2 = 697000; /* 0.010697 degree Celsius */
+ return IIO_VAL_INT_PLUS_MICRO;
+ default:
+ return -EINVAL;
+ }
+ case IIO_CHAN_INFO_CALIBBIAS:
+ ret = adis_read_reg_32(&adis16136->adis,
+ ADIS16136_REG_GYRO_OFF2, &val32);
+ if (ret < 0)
+ return ret;
+
+ *val = sign_extend32(val32, 31);
+
+ return IIO_VAL_INT;
+ case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+ return adis16136_get_filter(indio_dev, val);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int adis16136_write_raw(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan, int val, int val2, long info)
+{
+ struct adis16136 *adis16136 = iio_priv(indio_dev);
+
+ switch (info) {
+ case IIO_CHAN_INFO_CALIBBIAS:
+ return adis_write_reg_32(&adis16136->adis,
+ ADIS16136_REG_GYRO_OFF2, val);
+ case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+ return adis16136_set_filter(indio_dev, val);
+ default:
+ break;
+ }
+
+ return -EINVAL;
+}
+
+enum {
+ ADIS16136_SCAN_GYRO,
+ ADIS16136_SCAN_TEMP,
+};
+
+static const struct iio_chan_spec adis16136_channels[] = {
+ {
+ .type = IIO_ANGL_VEL,
+ .modified = 1,
+ .channel2 = IIO_MOD_X,
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
+ IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
+ IIO_CHAN_INFO_SCALE_SHARED_BIT |
+ IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SEPARATE_BIT,
+ .address = ADIS16136_REG_GYRO_OUT2,
+ .scan_index = ADIS16136_SCAN_GYRO,
+ .scan_type = {
+ .sign = 's',
+ .realbits = 32,
+ .storagebits = 32,
+ .endianness = IIO_BE,
+ },
+ }, {
+ .type = IIO_TEMP,
+ .indexed = 1,
+ .channel = 0,
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
+ IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
+ .address = ADIS16136_REG_TEMP_OUT,
+ .scan_index = ADIS16136_SCAN_TEMP,
+ .scan_type = {
+ .sign = 's',
+ .realbits = 16,
+ .storagebits = 16,
+ .endianness = IIO_BE,
+ },
+ },
+ IIO_CHAN_SOFT_TIMESTAMP(2),
+};
+
+static struct attribute *adis16136_attributes[] = {
+ &iio_dev_attr_sampling_frequency.dev_attr.attr,
+ NULL
+};
+
+static const struct attribute_group adis16136_attribute_group = {
+ .attrs = adis16136_attributes,
+};
+
+static const struct iio_info adis16136_info = {
+ .driver_module = THIS_MODULE,
+ .attrs = &adis16136_attribute_group,
+ .read_raw = &adis16136_read_raw,
+ .write_raw = &adis16136_write_raw,
+ .update_scan_mode = adis_update_scan_mode,
+ .debugfs_reg_access = adis_debugfs_reg_access,
+};
+
+static int adis16136_stop_device(struct iio_dev *indio_dev)
+{
+ struct adis16136 *adis16136 = iio_priv(indio_dev);
+ int ret;
+
+ ret = adis_write_reg_16(&adis16136->adis, ADIS16136_REG_SLP_CTRL, 0xff);
+ if (ret)
+ dev_err(&indio_dev->dev,
+ "Could not power down device: %d\n", ret);
+
+ return ret;
+}
+
+static int adis16136_initial_setup(struct iio_dev *indio_dev)
+{
+ struct adis16136 *adis16136 = iio_priv(indio_dev);
+ unsigned int device_id;
+ uint16_t prod_id;
+ int ret;
+
+ ret = adis_initial_startup(&adis16136->adis);
+ if (ret)
+ return ret;
+
+ ret = adis_read_reg_16(&adis16136->adis, ADIS16136_REG_PROD_ID,
+ &prod_id);
+ if (ret)
+ return ret;
+
+ sscanf(indio_dev->name, "adis%u\n", &device_id);
+
+ if (prod_id != device_id)
+ dev_warn(&indio_dev->dev, "Device ID(%u) and product ID(%u) do not match.",
+ device_id, prod_id);
+
+ return 0;
+}
+
+static const char * const adis16136_status_error_msgs[] = {
+ [ADIS16136_DIAG_STAT_FLASH_UPDATE_FAIL] = "Flash update failed",
+ [ADIS16136_DIAG_STAT_SPI_FAIL] = "SPI failure",
+ [ADIS16136_DIAG_STAT_SELF_TEST_FAIL] = "Self test error",
+ [ADIS16136_DIAG_STAT_FLASH_CHKSUM_FAIL] = "Flash checksum error",
+};
+
+static const struct adis_data adis16136_data = {
+ .diag_stat_reg = ADIS16136_REG_DIAG_STAT,
+ .glob_cmd_reg = ADIS16136_REG_GLOB_CMD,
+ .msc_ctrl_reg = ADIS16136_REG_MSC_CTRL,
+
+ .self_test_mask = ADIS16136_MSC_CTRL_SELF_TEST,
+ .startup_delay = 80,
+
+ .read_delay = 10,
+ .write_delay = 10,
+
+ .status_error_msgs = adis16136_status_error_msgs,
+ .status_error_mask = BIT(ADIS16136_DIAG_STAT_FLASH_UPDATE_FAIL) |
+ BIT(ADIS16136_DIAG_STAT_SPI_FAIL) |
+ BIT(ADIS16136_DIAG_STAT_SELF_TEST_FAIL) |
+ BIT(ADIS16136_DIAG_STAT_FLASH_CHKSUM_FAIL),
+};
+
+enum adis16136_id {
+ ID_ADIS16133,
+ ID_ADIS16135,
+ ID_ADIS16136,
+};
+
+static const struct adis16136_chip_info adis16136_chip_info[] = {
+ [ID_ADIS16133] = {
+ .precision = IIO_DEGREE_TO_RAD(1200),
+ .fullscale = 24000,
+ },
+ [ID_ADIS16135] = {
+ .precision = IIO_DEGREE_TO_RAD(300),
+ .fullscale = 24000,
+ },
+ [ID_ADIS16136] = {
+ .precision = IIO_DEGREE_TO_RAD(450),
+ .fullscale = 24623,
+ },
+};
+
+static int adis16136_probe(struct spi_device *spi)
+{
+ const struct spi_device_id *id = spi_get_device_id(spi);
+ struct adis16136 *adis16136;
+ struct iio_dev *indio_dev;
+ int ret;
+
+ indio_dev = iio_device_alloc(sizeof(*adis16136));
+ if (indio_dev == NULL)
+ return -ENOMEM;
+
+ spi_set_drvdata(spi, indio_dev);
+
+ adis16136 = iio_priv(indio_dev);
+
+ adis16136->chip_info = &adis16136_chip_info[id->driver_data];
+ indio_dev->dev.parent = &spi->dev;
+ indio_dev->name = spi_get_device_id(spi)->name;
+ indio_dev->channels = adis16136_channels;
+ indio_dev->num_channels = ARRAY_SIZE(adis16136_channels);
+ indio_dev->info = &adis16136_info;
+ indio_dev->modes = INDIO_DIRECT_MODE;
+
+ ret = adis_init(&adis16136->adis, indio_dev, spi, &adis16136_data);
+ if (ret)
+ goto error_free_dev;
+
+ ret = adis_setup_buffer_and_trigger(&adis16136->adis, indio_dev, NULL);
+ if (ret)
+ goto error_free_dev;
+
+ ret = adis16136_initial_setup(indio_dev);
+ if (ret)
+ goto error_cleanup_buffer;
+
+ ret = iio_device_register(indio_dev);
+ if (ret)
+ goto error_stop_device;
+
+ adis16136_debugfs_init(indio_dev);
+
+ return 0;
+
+error_stop_device:
+ adis16136_stop_device(indio_dev);
+error_cleanup_buffer:
+ adis_cleanup_buffer_and_trigger(&adis16136->adis, indio_dev);
+error_free_dev:
+ iio_device_free(indio_dev);
+ return ret;
+}
+
+static int adis16136_remove(struct spi_device *spi)
+{
+ struct iio_dev *indio_dev = spi_get_drvdata(spi);
+ struct adis16136 *adis16136 = iio_priv(indio_dev);
+
+ iio_device_unregister(indio_dev);
+ adis16136_stop_device(indio_dev);
+
+ adis_cleanup_buffer_and_trigger(&adis16136->adis, indio_dev);
+
+ iio_device_free(indio_dev);
+
+ return 0;
+}
+
+static const struct spi_device_id adis16136_ids[] = {
+ { "adis16133", ID_ADIS16133 },
+ { "adis16135", ID_ADIS16135 },
+ { "adis16136", ID_ADIS16136 },
+ { }
+};
+MODULE_DEVICE_TABLE(spi, adis16136_ids);
+
+static struct spi_driver adis16136_driver = {
+ .driver = {
+ .name = "adis16136",
+ .owner = THIS_MODULE,
+ },
+ .id_table = adis16136_ids,
+ .probe = adis16136_probe,
+ .remove = adis16136_remove,
+};
+module_spi_driver(adis16136_driver);
+
+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
+MODULE_DESCRIPTION("Analog Devices ADIS16133/ADIS16135/ADIS16136 gyroscope driver");
+MODULE_LICENSE("GPL v2");
goto error_free_dev;
}
- channels = kmemdup(gyro_3d_channels,
- sizeof(gyro_3d_channels),
- GFP_KERNEL);
+ channels = kmemdup(gyro_3d_channels, sizeof(gyro_3d_channels),
+ GFP_KERNEL);
if (!channels) {
+ ret = -ENOMEM;
dev_err(&pdev->dev, "failed to duplicate channels\n");
goto error_free_dev;
}
--- /dev/null
+#
+# IIO imu drivers configuration
+#
+menu "Inertial measurement units"
+
+config ADIS16480
+ tristate "Analog Devices ADIS16480 and similar IMU driver"
+ depends on SPI
+ select IIO_ADIS_LIB
+ select IIO_ADIS_LIB_BUFFER if IIO_BUFFER
+ help
+ Say yes here to build support for Analog Devices ADIS16375, ADIS16480,
+ ADIS16485, ADIS16488 inertial sensors.
+
+endmenu
+
+config IIO_ADIS_LIB
+ tristate
+ help
+ A set of IO helper functions for the Analog Devices ADIS* device family.
+
+config IIO_ADIS_LIB_BUFFER
+ bool
+ select IIO_TRIGGERED_BUFFER
+ help
+ A set of buffer helper functions for the Analog Devices ADIS* device
+ family.
--- /dev/null
+#
+# Makefile for Inertial Measurement Units
+#
+
+obj-$(CONFIG_ADIS16480) += adis16480.o
+
+adis_lib-y += adis.o
+adis_lib-$(CONFIG_IIO_ADIS_LIB_BUFFER) += adis_trigger.o
+adis_lib-$(CONFIG_IIO_ADIS_LIB_BUFFER) += adis_buffer.o
+obj-$(CONFIG_IIO_ADIS_LIB) += adis_lib.o
--- /dev/null
+/*
+ * Common library for ADIS16XXX devices
+ *
+ * Copyright 2012 Analog Devices Inc.
+ * Author: Lars-Peter Clausen <lars@metafoo.de>
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/delay.h>
+#include <linux/mutex.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/spi/spi.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
+#include <linux/module.h>
+#include <asm/unaligned.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/imu/adis.h>
+
+#define ADIS_MSC_CTRL_DATA_RDY_EN BIT(2)
+#define ADIS_MSC_CTRL_DATA_RDY_POL_HIGH BIT(1)
+#define ADIS_MSC_CTRL_DATA_RDY_DIO2 BIT(0)
+#define ADIS_GLOB_CMD_SW_RESET BIT(7)
+
+int adis_write_reg(struct adis *adis, unsigned int reg,
+ unsigned int value, unsigned int size)
+{
+ unsigned int page = reg / ADIS_PAGE_SIZE;
+ int ret, i;
+ struct spi_message msg;
+ struct spi_transfer xfers[] = {
+ {
+ .tx_buf = adis->tx,
+ .bits_per_word = 8,
+ .len = 2,
+ .cs_change = 1,
+ .delay_usecs = adis->data->write_delay,
+ }, {
+ .tx_buf = adis->tx + 2,
+ .bits_per_word = 8,
+ .len = 2,
+ .cs_change = 1,
+ .delay_usecs = adis->data->write_delay,
+ }, {
+ .tx_buf = adis->tx + 4,
+ .bits_per_word = 8,
+ .len = 2,
+ .cs_change = 1,
+ .delay_usecs = adis->data->write_delay,
+ }, {
+ .tx_buf = adis->tx + 6,
+ .bits_per_word = 8,
+ .len = 2,
+ .delay_usecs = adis->data->write_delay,
+ }, {
+ .tx_buf = adis->tx + 8,
+ .bits_per_word = 8,
+ .len = 2,
+ .delay_usecs = adis->data->write_delay,
+ },
+ };
+
+ mutex_lock(&adis->txrx_lock);
+
+ spi_message_init(&msg);
+
+ if (adis->current_page != page) {
+ adis->tx[0] = ADIS_WRITE_REG(ADIS_REG_PAGE_ID);
+ adis->tx[1] = page;
+ spi_message_add_tail(&xfers[0], &msg);
+ }
+
+ switch (size) {
+ case 4:
+ adis->tx[8] = ADIS_WRITE_REG(reg + 3);
+ adis->tx[9] = (value >> 24) & 0xff;
+ adis->tx[6] = ADIS_WRITE_REG(reg + 2);
+ adis->tx[7] = (value >> 16) & 0xff;
+ case 2:
+ adis->tx[4] = ADIS_WRITE_REG(reg + 1);
+ adis->tx[5] = (value >> 8) & 0xff;
+ case 1:
+ adis->tx[2] = ADIS_WRITE_REG(reg);
+ adis->tx[3] = value & 0xff;
+ break;
+ default:
+ ret = -EINVAL;
+ goto out_unlock;
+ }
+
+ xfers[size].cs_change = 0;
+
+ for (i = 1; i <= size; i++)
+ spi_message_add_tail(&xfers[i], &msg);
+
+ ret = spi_sync(adis->spi, &msg);
+ if (ret) {
+ dev_err(&adis->spi->dev, "Failed to write register 0x%02X: %d\n",
+ reg, ret);
+ } else {
+ adis->current_page = page;
+ }
+
+out_unlock:
+ mutex_unlock(&adis->txrx_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(adis_write_reg);
+
+/**
+ * adis_read_reg() - read 2 bytes from a 16-bit register
+ * @adis: The adis device
+ * @reg: The address of the lower of the two registers
+ * @val: The value read back from the device
+ */
+int adis_read_reg(struct adis *adis, unsigned int reg,
+ unsigned int *val, unsigned int size)
+{
+ unsigned int page = reg / ADIS_PAGE_SIZE;
+ struct spi_message msg;
+ int ret;
+ struct spi_transfer xfers[] = {
+ {
+ .tx_buf = adis->tx,
+ .bits_per_word = 8,
+ .len = 2,
+ .cs_change = 1,
+ .delay_usecs = adis->data->write_delay,
+ }, {
+ .tx_buf = adis->tx + 2,
+ .bits_per_word = 8,
+ .len = 2,
+ .cs_change = 1,
+ .delay_usecs = adis->data->read_delay,
+ }, {
+ .tx_buf = adis->tx + 4,
+ .rx_buf = adis->rx,
+ .bits_per_word = 8,
+ .len = 2,
+ .cs_change = 1,
+ .delay_usecs = adis->data->read_delay,
+ }, {
+ .rx_buf = adis->rx + 2,
+ .bits_per_word = 8,
+ .len = 2,
+ .delay_usecs = adis->data->read_delay,
+ },
+ };
+
+ mutex_lock(&adis->txrx_lock);
+ spi_message_init(&msg);
+
+ if (adis->current_page != page) {
+ adis->tx[0] = ADIS_WRITE_REG(ADIS_REG_PAGE_ID);
+ adis->tx[1] = page;
+ spi_message_add_tail(&xfers[0], &msg);
+ }
+
+ switch (size) {
+ case 4:
+ adis->tx[2] = ADIS_READ_REG(reg + 2);
+ adis->tx[3] = 0;
+ spi_message_add_tail(&xfers[1], &msg);
+ case 2:
+ adis->tx[4] = ADIS_READ_REG(reg);
+ adis->tx[5] = 0;
+ spi_message_add_tail(&xfers[2], &msg);
+ spi_message_add_tail(&xfers[3], &msg);
+ break;
+ default:
+ ret = -EINVAL;
+ goto out_unlock;
+ }
+
+ ret = spi_sync(adis->spi, &msg);
+ if (ret) {
+ dev_err(&adis->spi->dev, "Failed to read register 0x%02X: %d\n",
+ reg, ret);
+ goto out_unlock;
+ } else {
+ adis->current_page = page;
+ }
+
+ switch (size) {
+ case 4:
+ *val = get_unaligned_be32(adis->rx);
+ break;
+ case 2:
+ *val = get_unaligned_be16(adis->rx + 2);
+ break;
+ }
+
+out_unlock:
+ mutex_unlock(&adis->txrx_lock);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(adis_read_reg);
+
+#ifdef CONFIG_DEBUG_FS
+
+int adis_debugfs_reg_access(struct iio_dev *indio_dev,
+ unsigned int reg, unsigned int writeval, unsigned int *readval)
+{
+ struct adis *adis = iio_device_get_drvdata(indio_dev);
+
+ if (readval) {
+ uint16_t val16;
+ int ret;
+
+ ret = adis_read_reg_16(adis, reg, &val16);
+ *readval = val16;
+
+ return ret;
+ } else {
+ return adis_write_reg_16(adis, reg, writeval);
+ }
+}
+EXPORT_SYMBOL(adis_debugfs_reg_access);
+
+#endif
+
+/**
+ * adis_enable_irq() - Enable or disable data ready IRQ
+ * @adis: The adis device
+ * @enable: Whether to enable the IRQ
+ *
+ * Returns 0 on success, negative error code otherwise
+ */
+int adis_enable_irq(struct adis *adis, bool enable)
+{
+ int ret = 0;
+ uint16_t msc;
+
+ if (adis->data->enable_irq)
+ return adis->data->enable_irq(adis, enable);
+
+ ret = adis_read_reg_16(adis, adis->data->msc_ctrl_reg, &msc);
+ if (ret)
+ goto error_ret;
+
+ msc |= ADIS_MSC_CTRL_DATA_RDY_POL_HIGH;
+ msc &= ~ADIS_MSC_CTRL_DATA_RDY_DIO2;
+ if (enable)
+ msc |= ADIS_MSC_CTRL_DATA_RDY_EN;
+ else
+ msc &= ~ADIS_MSC_CTRL_DATA_RDY_EN;
+
+ ret = adis_write_reg_16(adis, adis->data->msc_ctrl_reg, msc);
+
+error_ret:
+ return ret;
+}
+EXPORT_SYMBOL(adis_enable_irq);
+
+/**
+ * adis_check_status() - Check the device for error conditions
+ * @adis: The adis device
+ *
+ * Returns 0 on success, a negative error code otherwise
+ */
+int adis_check_status(struct adis *adis)
+{
+ uint16_t status;
+ int ret;
+ int i;
+
+ ret = adis_read_reg_16(adis, adis->data->diag_stat_reg, &status);
+ if (ret < 0)
+ return ret;
+
+ status &= adis->data->status_error_mask;
+
+ if (status == 0)
+ return 0;
+
+ for (i = 0; i < 16; ++i) {
+ if (status & BIT(i)) {
+ dev_err(&adis->spi->dev, "%s.\n",
+ adis->data->status_error_msgs[i]);
+ }
+ }
+
+ return -EIO;
+}
+EXPORT_SYMBOL_GPL(adis_check_status);
+
+/**
+ * adis_reset() - Reset the device
+ * @adis: The adis device
+ *
+ * Returns 0 on success, a negative error code otherwise
+ */
+int adis_reset(struct adis *adis)
+{
+ int ret;
+
+ ret = adis_write_reg_8(adis, adis->data->glob_cmd_reg,
+ ADIS_GLOB_CMD_SW_RESET);
+ if (ret)
+ dev_err(&adis->spi->dev, "Failed to reset device: %d\n", ret);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(adis_reset);
+
+static int adis_self_test(struct adis *adis)
+{
+ int ret;
+
+ ret = adis_write_reg_16(adis, adis->data->msc_ctrl_reg,
+ adis->data->self_test_mask);
+ if (ret) {
+ dev_err(&adis->spi->dev, "Failed to initiate self test: %d\n",
+ ret);
+ return ret;
+ }
+
+ msleep(adis->data->startup_delay);
+
+ return adis_check_status(adis);
+}
+
+/**
+ * adis_inital_startup() - Performs device self-test
+ * @adis: The adis device
+ *
+ * Returns 0 if the device is operational, a negative error code otherwise.
+ *
+ * This function should be called early on in the device initialization sequence
+ * to ensure that the device is in a sane and known state and that it is usable.
+ */
+int adis_initial_startup(struct adis *adis)
+{
+ int ret;
+
+ ret = adis_self_test(adis);
+ if (ret) {
+ dev_err(&adis->spi->dev, "Self-test failed, trying reset.\n");
+ adis_reset(adis);
+ msleep(adis->data->startup_delay);
+ ret = adis_self_test(adis);
+ if (ret) {
+ dev_err(&adis->spi->dev, "Second self-test failed, giving up.\n");
+ return ret;
+ }
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(adis_initial_startup);
+
+/**
+ * adis_single_conversion() - Performs a single sample conversion
+ * @indio_dev: The IIO device
+ * @chan: The IIO channel
+ * @error_mask: Mask for the error bit
+ * @val: Result of the conversion
+ *
+ * Returns IIO_VAL_INT on success, a negative error code otherwise.
+ *
+ * The function performs a single conversion on a given channel and post
+ * processes the value accordingly to the channel spec. If a error_mask is given
+ * the function will check if the mask is set in the returned raw value. If it
+ * is set the function will perform a self-check. If the device does not report
+ * a error bit in the channels raw value set error_mask to 0.
+ */
+int adis_single_conversion(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan, unsigned int error_mask, int *val)
+{
+ struct adis *adis = iio_device_get_drvdata(indio_dev);
+ unsigned int uval;
+ int ret;
+
+ mutex_lock(&indio_dev->mlock);
+
+ ret = adis_read_reg(adis, chan->address, &uval,
+ chan->scan_type.storagebits / 8);
+ if (ret)
+ goto err_unlock;
+
+ if (uval & error_mask) {
+ ret = adis_check_status(adis);
+ if (ret)
+ goto err_unlock;
+ }
+
+ if (chan->scan_type.sign == 's')
+ *val = sign_extend32(uval, chan->scan_type.realbits - 1);
+ else
+ *val = uval & ((1 << chan->scan_type.realbits) - 1);
+
+ ret = IIO_VAL_INT;
+err_unlock:
+ mutex_unlock(&indio_dev->mlock);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(adis_single_conversion);
+
+/**
+ * adis_init() - Initialize adis device structure
+ * @adis: The adis device
+ * @indio_dev: The iio device
+ * @spi: The spi device
+ * @data: Chip specific data
+ *
+ * Returns 0 on success, a negative error code otherwise.
+ *
+ * This function must be called, before any other adis helper function may be
+ * called.
+ */
+int adis_init(struct adis *adis, struct iio_dev *indio_dev,
+ struct spi_device *spi, const struct adis_data *data)
+{
+ mutex_init(&adis->txrx_lock);
+ adis->spi = spi;
+ adis->data = data;
+ iio_device_set_drvdata(indio_dev, adis);
+
+ if (data->has_paging) {
+ /* Need to set the page before first read/write */
+ adis->current_page = -1;
+ } else {
+ /* Page will always be 0 */
+ adis->current_page = 0;
+ }
+
+ return adis_enable_irq(adis, false);
+}
+EXPORT_SYMBOL_GPL(adis_init);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
+MODULE_DESCRIPTION("Common library code for ADIS16XXX devices");
--- /dev/null
+/*
+ * ADIS16480 and similar IMUs driver
+ *
+ * Copyright 2012 Analog Devices Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/mutex.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/spi/spi.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
+#include <linux/module.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/imu/adis.h>
+
+#include <linux/iio/iio.h>
+#include <linux/debugfs.h>
+
+#define ADIS16480_PAGE_SIZE 0x80
+
+#define ADIS16480_REG(page, reg) ((page) * ADIS16480_PAGE_SIZE + (reg))
+
+#define ADIS16480_REG_PAGE_ID 0x00 /* Same address on each page */
+#define ADIS16480_REG_SEQ_CNT ADIS16480_REG(0x00, 0x06)
+#define ADIS16480_REG_SYS_E_FLA ADIS16480_REG(0x00, 0x08)
+#define ADIS16480_REG_DIAG_STS ADIS16480_REG(0x00, 0x0A)
+#define ADIS16480_REG_ALM_STS ADIS16480_REG(0x00, 0x0C)
+#define ADIS16480_REG_TEMP_OUT ADIS16480_REG(0x00, 0x0E)
+#define ADIS16480_REG_X_GYRO_OUT ADIS16480_REG(0x00, 0x10)
+#define ADIS16480_REG_Y_GYRO_OUT ADIS16480_REG(0x00, 0x14)
+#define ADIS16480_REG_Z_GYRO_OUT ADIS16480_REG(0x00, 0x18)
+#define ADIS16480_REG_X_ACCEL_OUT ADIS16480_REG(0x00, 0x1C)
+#define ADIS16480_REG_Y_ACCEL_OUT ADIS16480_REG(0x00, 0x20)
+#define ADIS16480_REG_Z_ACCEL_OUT ADIS16480_REG(0x00, 0x24)
+#define ADIS16480_REG_X_MAGN_OUT ADIS16480_REG(0x00, 0x28)
+#define ADIS16480_REG_Y_MAGN_OUT ADIS16480_REG(0x00, 0x2A)
+#define ADIS16480_REG_Z_MAGN_OUT ADIS16480_REG(0x00, 0x2C)
+#define ADIS16480_REG_BAROM_OUT ADIS16480_REG(0x00, 0x2E)
+#define ADIS16480_REG_X_DELTAANG_OUT ADIS16480_REG(0x00, 0x40)
+#define ADIS16480_REG_Y_DELTAANG_OUT ADIS16480_REG(0x00, 0x44)
+#define ADIS16480_REG_Z_DELTAANG_OUT ADIS16480_REG(0x00, 0x48)
+#define ADIS16480_REG_X_DELTAVEL_OUT ADIS16480_REG(0x00, 0x4C)
+#define ADIS16480_REG_Y_DELTAVEL_OUT ADIS16480_REG(0x00, 0x50)
+#define ADIS16480_REG_Z_DELTAVEL_OUT ADIS16480_REG(0x00, 0x54)
+#define ADIS16480_REG_PROD_ID ADIS16480_REG(0x00, 0x7E)
+
+#define ADIS16480_REG_X_GYRO_SCALE ADIS16480_REG(0x02, 0x04)
+#define ADIS16480_REG_Y_GYRO_SCALE ADIS16480_REG(0x02, 0x06)
+#define ADIS16480_REG_Z_GYRO_SCALE ADIS16480_REG(0x02, 0x08)
+#define ADIS16480_REG_X_ACCEL_SCALE ADIS16480_REG(0x02, 0x0A)
+#define ADIS16480_REG_Y_ACCEL_SCALE ADIS16480_REG(0x02, 0x0C)
+#define ADIS16480_REG_Z_ACCEL_SCALE ADIS16480_REG(0x02, 0x0E)
+#define ADIS16480_REG_X_GYRO_BIAS ADIS16480_REG(0x02, 0x10)
+#define ADIS16480_REG_Y_GYRO_BIAS ADIS16480_REG(0x02, 0x14)
+#define ADIS16480_REG_Z_GYRO_BIAS ADIS16480_REG(0x02, 0x18)
+#define ADIS16480_REG_X_ACCEL_BIAS ADIS16480_REG(0x02, 0x1C)
+#define ADIS16480_REG_Y_ACCEL_BIAS ADIS16480_REG(0x02, 0x20)
+#define ADIS16480_REG_Z_ACCEL_BIAS ADIS16480_REG(0x02, 0x24)
+#define ADIS16480_REG_X_HARD_IRON ADIS16480_REG(0x02, 0x28)
+#define ADIS16480_REG_Y_HARD_IRON ADIS16480_REG(0x02, 0x2A)
+#define ADIS16480_REG_Z_HARD_IRON ADIS16480_REG(0x02, 0x2C)
+#define ADIS16480_REG_BAROM_BIAS ADIS16480_REG(0x02, 0x40)
+#define ADIS16480_REG_FLASH_CNT ADIS16480_REG(0x02, 0x7C)
+
+#define ADIS16480_REG_GLOB_CMD ADIS16480_REG(0x03, 0x02)
+#define ADIS16480_REG_FNCTIO_CTRL ADIS16480_REG(0x03, 0x06)
+#define ADIS16480_REG_GPIO_CTRL ADIS16480_REG(0x03, 0x08)
+#define ADIS16480_REG_CONFIG ADIS16480_REG(0x03, 0x0A)
+#define ADIS16480_REG_DEC_RATE ADIS16480_REG(0x03, 0x0C)
+#define ADIS16480_REG_SLP_CNT ADIS16480_REG(0x03, 0x10)
+#define ADIS16480_REG_FILTER_BNK0 ADIS16480_REG(0x03, 0x16)
+#define ADIS16480_REG_FILTER_BNK1 ADIS16480_REG(0x03, 0x18)
+#define ADIS16480_REG_ALM_CNFG0 ADIS16480_REG(0x03, 0x20)
+#define ADIS16480_REG_ALM_CNFG1 ADIS16480_REG(0x03, 0x22)
+#define ADIS16480_REG_ALM_CNFG2 ADIS16480_REG(0x03, 0x24)
+#define ADIS16480_REG_XG_ALM_MAGN ADIS16480_REG(0x03, 0x28)
+#define ADIS16480_REG_YG_ALM_MAGN ADIS16480_REG(0x03, 0x2A)
+#define ADIS16480_REG_ZG_ALM_MAGN ADIS16480_REG(0x03, 0x2C)
+#define ADIS16480_REG_XA_ALM_MAGN ADIS16480_REG(0x03, 0x2E)
+#define ADIS16480_REG_YA_ALM_MAGN ADIS16480_REG(0x03, 0x30)
+#define ADIS16480_REG_ZA_ALM_MAGN ADIS16480_REG(0x03, 0x32)
+#define ADIS16480_REG_XM_ALM_MAGN ADIS16480_REG(0x03, 0x34)
+#define ADIS16480_REG_YM_ALM_MAGN ADIS16480_REG(0x03, 0x36)
+#define ADIS16480_REG_ZM_ALM_MAGN ADIS16480_REG(0x03, 0x38)
+#define ADIS16480_REG_BR_ALM_MAGN ADIS16480_REG(0x03, 0x3A)
+#define ADIS16480_REG_FIRM_REV ADIS16480_REG(0x03, 0x78)
+#define ADIS16480_REG_FIRM_DM ADIS16480_REG(0x03, 0x7A)
+#define ADIS16480_REG_FIRM_Y ADIS16480_REG(0x03, 0x7C)
+
+#define ADIS16480_REG_SERIAL_NUM ADIS16480_REG(0x04, 0x20)
+
+/* Each filter coefficent bank spans two pages */
+#define ADIS16480_FIR_COEF(page) (x < 60 ? ADIS16480_REG(page, (x) + 8) : \
+ ADIS16480_REG((page) + 1, (x) - 60 + 8))
+#define ADIS16480_FIR_COEF_A(x) ADIS16480_FIR_COEF(0x05, (x))
+#define ADIS16480_FIR_COEF_B(x) ADIS16480_FIR_COEF(0x07, (x))
+#define ADIS16480_FIR_COEF_C(x) ADIS16480_FIR_COEF(0x09, (x))
+#define ADIS16480_FIR_COEF_D(x) ADIS16480_FIR_COEF(0x0B, (x))
+
+struct adis16480_chip_info {
+ unsigned int num_channels;
+ const struct iio_chan_spec *channels;
+};
+
+struct adis16480 {
+ const struct adis16480_chip_info *chip_info;
+
+ struct adis adis;
+};
+
+#ifdef CONFIG_DEBUG_FS
+
+static ssize_t adis16480_show_firmware_revision(struct file *file,
+ char __user *userbuf, size_t count, loff_t *ppos)
+{
+ struct adis16480 *adis16480 = file->private_data;
+ char buf[6];
+ size_t len;
+ u16 rev;
+ int ret;
+
+ ret = adis_read_reg_16(&adis16480->adis, ADIS16480_REG_FIRM_REV, &rev);
+ if (ret < 0)
+ return ret;
+
+ len = snprintf(buf, sizeof(buf), "%x.%x\n", rev >> 8, rev & 0xff);
+
+ return simple_read_from_buffer(userbuf, count, ppos, buf, len);
+}
+
+static const struct file_operations adis16480_firmware_revision_fops = {
+ .open = simple_open,
+ .read = adis16480_show_firmware_revision,
+ .llseek = default_llseek,
+ .owner = THIS_MODULE,
+};
+
+static ssize_t adis16480_show_firmware_date(struct file *file,
+ char __user *userbuf, size_t count, loff_t *ppos)
+{
+ struct adis16480 *adis16480 = file->private_data;
+ u16 md, year;
+ char buf[12];
+ size_t len;
+ int ret;
+
+ ret = adis_read_reg_16(&adis16480->adis, ADIS16480_REG_FIRM_Y, &year);
+ if (ret < 0)
+ return ret;
+
+ ret = adis_read_reg_16(&adis16480->adis, ADIS16480_REG_FIRM_DM, &md);
+ if (ret < 0)
+ return ret;
+
+ len = snprintf(buf, sizeof(buf), "%.2x-%.2x-%.4x\n",
+ md >> 8, md & 0xff, year);
+
+ return simple_read_from_buffer(userbuf, count, ppos, buf, len);
+}
+
+static const struct file_operations adis16480_firmware_date_fops = {
+ .open = simple_open,
+ .read = adis16480_show_firmware_date,
+ .llseek = default_llseek,
+ .owner = THIS_MODULE,
+};
+
+static int adis16480_show_serial_number(void *arg, u64 *val)
+{
+ struct adis16480 *adis16480 = arg;
+ u16 serial;
+ int ret;
+
+ ret = adis_read_reg_16(&adis16480->adis, ADIS16480_REG_SERIAL_NUM,
+ &serial);
+ if (ret < 0)
+ return ret;
+
+ *val = serial;
+
+ return 0;
+}
+DEFINE_SIMPLE_ATTRIBUTE(adis16480_serial_number_fops,
+ adis16480_show_serial_number, NULL, "0x%.4llx\n");
+
+static int adis16480_show_product_id(void *arg, u64 *val)
+{
+ struct adis16480 *adis16480 = arg;
+ u16 prod_id;
+ int ret;
+
+ ret = adis_read_reg_16(&adis16480->adis, ADIS16480_REG_PROD_ID,
+ &prod_id);
+ if (ret < 0)
+ return ret;
+
+ *val = prod_id;
+
+ return 0;
+}
+DEFINE_SIMPLE_ATTRIBUTE(adis16480_product_id_fops,
+ adis16480_show_product_id, NULL, "%llu\n");
+
+static int adis16480_show_flash_count(void *arg, u64 *val)
+{
+ struct adis16480 *adis16480 = arg;
+ u32 flash_count;
+ int ret;
+
+ ret = adis_read_reg_32(&adis16480->adis, ADIS16480_REG_FLASH_CNT,
+ &flash_count);
+ if (ret < 0)
+ return ret;
+
+ *val = flash_count;
+
+ return 0;
+}
+DEFINE_SIMPLE_ATTRIBUTE(adis16480_flash_count_fops,
+ adis16480_show_flash_count, NULL, "%lld\n");
+
+static int adis16480_debugfs_init(struct iio_dev *indio_dev)
+{
+ struct adis16480 *adis16480 = iio_priv(indio_dev);
+
+ debugfs_create_file("firmware_revision", 0400,
+ indio_dev->debugfs_dentry, adis16480,
+ &adis16480_firmware_revision_fops);
+ debugfs_create_file("firmware_date", 0400, indio_dev->debugfs_dentry,
+ adis16480, &adis16480_firmware_date_fops);
+ debugfs_create_file("serial_number", 0400, indio_dev->debugfs_dentry,
+ adis16480, &adis16480_serial_number_fops);
+ debugfs_create_file("product_id", 0400, indio_dev->debugfs_dentry,
+ adis16480, &adis16480_product_id_fops);
+ debugfs_create_file("flash_count", 0400, indio_dev->debugfs_dentry,
+ adis16480, &adis16480_flash_count_fops);
+
+ return 0;
+}
+
+#else
+
+static int adis16480_debugfs_init(struct iio_dev *indio_dev)
+{
+ return 0;
+}
+
+#endif
+
+static int adis16480_set_freq(struct adis16480 *st, unsigned int freq)
+{
+ unsigned int t;
+
+ t = 2460000 / freq;
+ if (t > 2048)
+ t = 2048;
+
+ if (t != 0)
+ t--;
+
+ return adis_write_reg_16(&st->adis, ADIS16480_REG_DEC_RATE, t);
+}
+
+static int adis16480_get_freq(struct adis16480 *st, unsigned int *freq)
+{
+ uint16_t t;
+ int ret;
+
+ ret = adis_read_reg_16(&st->adis, ADIS16480_REG_DEC_RATE, &t);
+ if (ret < 0)
+ return ret;
+
+ *freq = 2460000 / (t + 1);
+
+ return 0;
+}
+
+static ssize_t adis16480_read_frequency(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+ struct adis16480 *st = iio_priv(indio_dev);
+ unsigned int freq;
+ int ret;
+
+ ret = adis16480_get_freq(st, &freq);
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%d.%.3d\n", freq / 1000, freq % 1000);
+}
+
+static ssize_t adis16480_write_frequency(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+ struct adis16480 *st = iio_priv(indio_dev);
+ int freq_int, freq_fract;
+ long val;
+ int ret;
+
+ ret = iio_str_to_fixpoint(buf, 100, &freq_int, &freq_fract);
+ if (ret)
+ return ret;
+
+ val = freq_int * 1000 + freq_fract;
+
+ if (val <= 0)
+ return -EINVAL;
+
+ ret = adis16480_set_freq(st, val);
+
+ return ret ? ret : len;
+}
+
+static IIO_DEV_ATTR_SAMP_FREQ(S_IWUSR | S_IRUGO,
+ adis16480_read_frequency,
+ adis16480_write_frequency);
+
+enum {
+ ADIS16480_SCAN_GYRO_X,
+ ADIS16480_SCAN_GYRO_Y,
+ ADIS16480_SCAN_GYRO_Z,
+ ADIS16480_SCAN_ACCEL_X,
+ ADIS16480_SCAN_ACCEL_Y,
+ ADIS16480_SCAN_ACCEL_Z,
+ ADIS16480_SCAN_MAGN_X,
+ ADIS16480_SCAN_MAGN_Y,
+ ADIS16480_SCAN_MAGN_Z,
+ ADIS16480_SCAN_BARO,
+ ADIS16480_SCAN_TEMP,
+};
+
+static const unsigned int adis16480_calibbias_regs[] = {
+ [ADIS16480_SCAN_GYRO_X] = ADIS16480_REG_X_GYRO_BIAS,
+ [ADIS16480_SCAN_GYRO_Y] = ADIS16480_REG_Y_GYRO_BIAS,
+ [ADIS16480_SCAN_GYRO_Z] = ADIS16480_REG_Z_GYRO_BIAS,
+ [ADIS16480_SCAN_ACCEL_X] = ADIS16480_REG_X_ACCEL_BIAS,
+ [ADIS16480_SCAN_ACCEL_Y] = ADIS16480_REG_Y_ACCEL_BIAS,
+ [ADIS16480_SCAN_ACCEL_Z] = ADIS16480_REG_Z_ACCEL_BIAS,
+ [ADIS16480_SCAN_MAGN_X] = ADIS16480_REG_X_HARD_IRON,
+ [ADIS16480_SCAN_MAGN_Y] = ADIS16480_REG_Y_HARD_IRON,
+ [ADIS16480_SCAN_MAGN_Z] = ADIS16480_REG_Z_HARD_IRON,
+ [ADIS16480_SCAN_BARO] = ADIS16480_REG_BAROM_BIAS,
+};
+
+static const unsigned int adis16480_calibscale_regs[] = {
+ [ADIS16480_SCAN_GYRO_X] = ADIS16480_REG_X_GYRO_SCALE,
+ [ADIS16480_SCAN_GYRO_Y] = ADIS16480_REG_Y_GYRO_SCALE,
+ [ADIS16480_SCAN_GYRO_Z] = ADIS16480_REG_Z_GYRO_SCALE,
+ [ADIS16480_SCAN_ACCEL_X] = ADIS16480_REG_X_ACCEL_SCALE,
+ [ADIS16480_SCAN_ACCEL_Y] = ADIS16480_REG_Y_ACCEL_SCALE,
+ [ADIS16480_SCAN_ACCEL_Z] = ADIS16480_REG_Z_ACCEL_SCALE,
+};
+
+static int adis16480_set_calibbias(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan, int bias)
+{
+ unsigned int reg = adis16480_calibbias_regs[chan->scan_index];
+ struct adis16480 *st = iio_priv(indio_dev);
+
+ switch (chan->type) {
+ case IIO_MAGN:
+ case IIO_PRESSURE:
+ if (bias < -0x8000 || bias >= 0x8000)
+ return -EINVAL;
+ return adis_write_reg_16(&st->adis, reg, bias);
+ case IIO_ANGL_VEL:
+ case IIO_ACCEL:
+ return adis_write_reg_32(&st->adis, reg, bias);
+ default:
+ break;
+ }
+
+ return -EINVAL;
+}
+
+static int adis16480_get_calibbias(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan, int *bias)
+{
+ unsigned int reg = adis16480_calibbias_regs[chan->scan_index];
+ struct adis16480 *st = iio_priv(indio_dev);
+ uint16_t val16;
+ uint32_t val32;
+ int ret;
+
+ switch (chan->type) {
+ case IIO_MAGN:
+ case IIO_PRESSURE:
+ ret = adis_read_reg_16(&st->adis, reg, &val16);
+ *bias = sign_extend32(val16, 15);
+ break;
+ case IIO_ANGL_VEL:
+ case IIO_ACCEL:
+ ret = adis_read_reg_32(&st->adis, reg, &val32);
+ *bias = sign_extend32(val32, 31);
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ if (ret < 0)
+ return ret;
+
+ return IIO_VAL_INT;
+}
+
+static int adis16480_set_calibscale(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan, int scale)
+{
+ unsigned int reg = adis16480_calibscale_regs[chan->scan_index];
+ struct adis16480 *st = iio_priv(indio_dev);
+
+ if (scale < -0x8000 || scale >= 0x8000)
+ return -EINVAL;
+
+ return adis_write_reg_16(&st->adis, reg, scale);
+}
+
+static int adis16480_get_calibscale(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan, int *scale)
+{
+ unsigned int reg = adis16480_calibscale_regs[chan->scan_index];
+ struct adis16480 *st = iio_priv(indio_dev);
+ uint16_t val16;
+ int ret;
+
+ ret = adis_read_reg_16(&st->adis, reg, &val16);
+ if (ret < 0)
+ return ret;
+
+ *scale = sign_extend32(val16, 15);
+ return IIO_VAL_INT;
+}
+
+static const unsigned int adis16480_def_filter_freqs[] = {
+ 310,
+ 55,
+ 275,
+ 63,
+};
+
+static const unsigned int ad16480_filter_data[][2] = {
+ [ADIS16480_SCAN_GYRO_X] = { ADIS16480_REG_FILTER_BNK0, 0 },
+ [ADIS16480_SCAN_GYRO_Y] = { ADIS16480_REG_FILTER_BNK0, 3 },
+ [ADIS16480_SCAN_GYRO_Z] = { ADIS16480_REG_FILTER_BNK0, 6 },
+ [ADIS16480_SCAN_ACCEL_X] = { ADIS16480_REG_FILTER_BNK0, 9 },
+ [ADIS16480_SCAN_ACCEL_Y] = { ADIS16480_REG_FILTER_BNK0, 12 },
+ [ADIS16480_SCAN_ACCEL_Z] = { ADIS16480_REG_FILTER_BNK1, 0 },
+ [ADIS16480_SCAN_MAGN_X] = { ADIS16480_REG_FILTER_BNK1, 3 },
+ [ADIS16480_SCAN_MAGN_Y] = { ADIS16480_REG_FILTER_BNK1, 6 },
+ [ADIS16480_SCAN_MAGN_Z] = { ADIS16480_REG_FILTER_BNK1, 9 },
+};
+
+static int adis16480_get_filter_freq(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan, int *freq)
+{
+ struct adis16480 *st = iio_priv(indio_dev);
+ unsigned int enable_mask, offset, reg;
+ uint16_t val;
+ int ret;
+
+ reg = ad16480_filter_data[chan->scan_index][0];
+ offset = ad16480_filter_data[chan->scan_index][1];
+ enable_mask = BIT(offset + 2);
+
+ ret = adis_read_reg_16(&st->adis, reg, &val);
+ if (ret < 0)
+ return ret;
+
+ if (!(val & enable_mask))
+ *freq = 0;
+ else
+ *freq = adis16480_def_filter_freqs[(val >> offset) & 0x3];
+
+ return IIO_VAL_INT;
+}
+
+static int adis16480_set_filter_freq(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan, unsigned int freq)
+{
+ struct adis16480 *st = iio_priv(indio_dev);
+ unsigned int enable_mask, offset, reg;
+ unsigned int diff, best_diff;
+ unsigned int i, best_freq;
+ uint16_t val;
+ int ret;
+
+ reg = ad16480_filter_data[chan->scan_index][0];
+ offset = ad16480_filter_data[chan->scan_index][1];
+ enable_mask = BIT(offset + 2);
+
+ ret = adis_read_reg_16(&st->adis, reg, &val);
+ if (ret < 0)
+ return ret;
+
+ if (freq == 0) {
+ val &= ~enable_mask;
+ } else {
+ best_freq = 0;
+ best_diff = 310;
+ for (i = 0; i < ARRAY_SIZE(adis16480_def_filter_freqs); i++) {
+ if (adis16480_def_filter_freqs[i] >= freq) {
+ diff = adis16480_def_filter_freqs[i] - freq;
+ if (diff < best_diff) {
+ best_diff = diff;
+ best_freq = i;
+ }
+ }
+ }
+
+ val &= ~(0x3 << offset);
+ val |= best_freq << offset;
+ val |= enable_mask;
+ }
+
+ return adis_write_reg_16(&st->adis, reg, val);
+}
+
+static int adis16480_read_raw(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan, int *val, int *val2, long info)
+{
+ switch (info) {
+ case IIO_CHAN_INFO_RAW:
+ return adis_single_conversion(indio_dev, chan, 0, val);
+ case IIO_CHAN_INFO_SCALE:
+ switch (chan->type) {
+ case IIO_ANGL_VEL:
+ *val = 0;
+ *val2 = IIO_DEGREE_TO_RAD(20000); /* 0.02 degree/sec */
+ return IIO_VAL_INT_PLUS_MICRO;
+ case IIO_ACCEL:
+ *val = 0;
+ *val2 = IIO_G_TO_M_S_2(800); /* 0.8 mg */
+ return IIO_VAL_INT_PLUS_MICRO;
+ case IIO_MAGN:
+ *val = 0;
+ *val2 = 100; /* 0.0001 gauss */
+ return IIO_VAL_INT_PLUS_MICRO;
+ case IIO_TEMP:
+ *val = 5;
+ *val2 = 650000; /* 5.65 milli degree Celsius */
+ return IIO_VAL_INT_PLUS_MICRO;
+ case IIO_PRESSURE:
+ *val = 0;
+ *val2 = 4000; /* 40ubar = 0.004 kPa */
+ return IIO_VAL_INT_PLUS_MICRO;
+ default:
+ return -EINVAL;
+ }
+ case IIO_CHAN_INFO_OFFSET:
+ /* Only the temperature channel has a offset */
+ *val = 4425; /* 25 degree Celsius = 0x0000 */
+ return IIO_VAL_INT;
+ case IIO_CHAN_INFO_CALIBBIAS:
+ return adis16480_get_calibbias(indio_dev, chan, val);
+ case IIO_CHAN_INFO_CALIBSCALE:
+ return adis16480_get_calibscale(indio_dev, chan, val);
+ case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+ return adis16480_get_filter_freq(indio_dev, chan, val);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int adis16480_write_raw(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan, int val, int val2, long info)
+{
+ switch (info) {
+ case IIO_CHAN_INFO_CALIBBIAS:
+ return adis16480_set_calibbias(indio_dev, chan, val);
+ case IIO_CHAN_INFO_CALIBSCALE:
+ return adis16480_set_calibscale(indio_dev, chan, val);
+ case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+ return adis16480_set_filter_freq(indio_dev, chan, val);
+ default:
+ return -EINVAL;
+ }
+}
+
+#define ADIS16480_MOD_CHANNEL(_type, _mod, _address, _si, _info, _bits) \
+ { \
+ .type = (_type), \
+ .modified = 1, \
+ .channel2 = (_mod), \
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT | \
+ IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT | \
+ IIO_CHAN_INFO_SCALE_SHARED_BIT | \
+ _info, \
+ .address = (_address), \
+ .scan_index = (_si), \
+ .scan_type = { \
+ .sign = 's', \
+ .realbits = (_bits), \
+ .storagebits = (_bits), \
+ .endianness = IIO_BE, \
+ }, \
+ }
+
+#define ADIS16480_GYRO_CHANNEL(_mod) \
+ ADIS16480_MOD_CHANNEL(IIO_ANGL_VEL, IIO_MOD_ ## _mod, \
+ ADIS16480_REG_ ## _mod ## _GYRO_OUT, ADIS16480_SCAN_GYRO_ ## _mod, \
+ IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SEPARATE_BIT | \
+ IIO_CHAN_INFO_CALIBSCALE_SEPARATE_BIT, \
+ 32)
+
+#define ADIS16480_ACCEL_CHANNEL(_mod) \
+ ADIS16480_MOD_CHANNEL(IIO_ACCEL, IIO_MOD_ ## _mod, \
+ ADIS16480_REG_ ## _mod ## _ACCEL_OUT, ADIS16480_SCAN_ACCEL_ ## _mod, \
+ IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SEPARATE_BIT | \
+ IIO_CHAN_INFO_CALIBSCALE_SEPARATE_BIT, \
+ 32)
+
+#define ADIS16480_MAGN_CHANNEL(_mod) \
+ ADIS16480_MOD_CHANNEL(IIO_MAGN, IIO_MOD_ ## _mod, \
+ ADIS16480_REG_ ## _mod ## _MAGN_OUT, ADIS16480_SCAN_MAGN_ ## _mod, \
+ IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SEPARATE_BIT, \
+ 16)
+
+#define ADIS16480_PRESSURE_CHANNEL() \
+ { \
+ .type = IIO_PRESSURE, \
+ .indexed = 1, \
+ .channel = 0, \
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT | \
+ IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT | \
+ IIO_CHAN_INFO_SCALE_SEPARATE_BIT, \
+ .address = ADIS16480_REG_BAROM_OUT, \
+ .scan_index = ADIS16480_SCAN_BARO, \
+ .scan_type = { \
+ .sign = 's', \
+ .realbits = 32, \
+ .storagebits = 32, \
+ .endianness = IIO_BE, \
+ }, \
+ }
+
+#define ADIS16480_TEMP_CHANNEL() { \
+ .type = IIO_TEMP, \
+ .indexed = 1, \
+ .channel = 0, \
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT | \
+ IIO_CHAN_INFO_SCALE_SEPARATE_BIT | \
+ IIO_CHAN_INFO_OFFSET_SEPARATE_BIT, \
+ .address = ADIS16480_REG_TEMP_OUT, \
+ .scan_index = ADIS16480_SCAN_TEMP, \
+ .scan_type = { \
+ .sign = 's', \
+ .realbits = 16, \
+ .storagebits = 16, \
+ .endianness = IIO_BE, \
+ }, \
+ }
+
+static const struct iio_chan_spec adis16480_channels[] = {
+ ADIS16480_GYRO_CHANNEL(X),
+ ADIS16480_GYRO_CHANNEL(Y),
+ ADIS16480_GYRO_CHANNEL(Z),
+ ADIS16480_ACCEL_CHANNEL(X),
+ ADIS16480_ACCEL_CHANNEL(Y),
+ ADIS16480_ACCEL_CHANNEL(Z),
+ ADIS16480_MAGN_CHANNEL(X),
+ ADIS16480_MAGN_CHANNEL(Y),
+ ADIS16480_MAGN_CHANNEL(Z),
+ ADIS16480_PRESSURE_CHANNEL(),
+ ADIS16480_TEMP_CHANNEL(),
+ IIO_CHAN_SOFT_TIMESTAMP(11)
+};
+
+static const struct iio_chan_spec adis16485_channels[] = {
+ ADIS16480_GYRO_CHANNEL(X),
+ ADIS16480_GYRO_CHANNEL(Y),
+ ADIS16480_GYRO_CHANNEL(Z),
+ ADIS16480_ACCEL_CHANNEL(X),
+ ADIS16480_ACCEL_CHANNEL(Y),
+ ADIS16480_ACCEL_CHANNEL(Z),
+ ADIS16480_TEMP_CHANNEL(),
+ IIO_CHAN_SOFT_TIMESTAMP(7)
+};
+
+enum adis16480_variant {
+ ADIS16375,
+ ADIS16480,
+ ADIS16485,
+ ADIS16488,
+};
+
+static const struct adis16480_chip_info adis16480_chip_info[] = {
+ [ADIS16375] = {
+ .channels = adis16485_channels,
+ .num_channels = ARRAY_SIZE(adis16485_channels),
+ },
+ [ADIS16480] = {
+ .channels = adis16480_channels,
+ .num_channels = ARRAY_SIZE(adis16480_channels),
+ },
+ [ADIS16485] = {
+ .channels = adis16485_channels,
+ .num_channels = ARRAY_SIZE(adis16485_channels),
+ },
+ [ADIS16488] = {
+ .channels = adis16480_channels,
+ .num_channels = ARRAY_SIZE(adis16480_channels),
+ },
+};
+
+static struct attribute *adis16480_attributes[] = {
+ &iio_dev_attr_sampling_frequency.dev_attr.attr,
+ NULL
+};
+
+static const struct attribute_group adis16480_attribute_group = {
+ .attrs = adis16480_attributes,
+};
+
+static const struct iio_info adis16480_info = {
+ .attrs = &adis16480_attribute_group,
+ .read_raw = &adis16480_read_raw,
+ .write_raw = &adis16480_write_raw,
+ .update_scan_mode = adis_update_scan_mode,
+ .driver_module = THIS_MODULE,
+};
+
+static int adis16480_stop_device(struct iio_dev *indio_dev)
+{
+ struct adis16480 *st = iio_priv(indio_dev);
+ int ret;
+
+ ret = adis_write_reg_16(&st->adis, ADIS16480_REG_SLP_CNT, BIT(9));
+ if (ret)
+ dev_err(&indio_dev->dev,
+ "Could not power down device: %d\n", ret);
+
+ return ret;
+}
+
+static int adis16480_enable_irq(struct adis *adis, bool enable)
+{
+ return adis_write_reg_16(adis, ADIS16480_REG_FNCTIO_CTRL,
+ enable ? BIT(3) : 0);
+}
+
+static int adis16480_initial_setup(struct iio_dev *indio_dev)
+{
+ struct adis16480 *st = iio_priv(indio_dev);
+ uint16_t prod_id;
+ unsigned int device_id;
+ int ret;
+
+ adis_reset(&st->adis);
+ msleep(70);
+
+ ret = adis_write_reg_16(&st->adis, ADIS16480_REG_GLOB_CMD, BIT(1));
+ if (ret)
+ return ret;
+ msleep(30);
+
+ ret = adis_check_status(&st->adis);
+ if (ret)
+ return ret;
+
+ ret = adis_read_reg_16(&st->adis, ADIS16480_REG_PROD_ID, &prod_id);
+ if (ret)
+ return ret;
+
+ sscanf(indio_dev->name, "adis%u\n", &device_id);
+
+ if (prod_id != device_id)
+ dev_warn(&indio_dev->dev, "Device ID(%u) and product ID(%u) do not match.",
+ device_id, prod_id);
+
+ return 0;
+}
+
+#define ADIS16480_DIAG_STAT_XGYRO_FAIL 0
+#define ADIS16480_DIAG_STAT_YGYRO_FAIL 1
+#define ADIS16480_DIAG_STAT_ZGYRO_FAIL 2
+#define ADIS16480_DIAG_STAT_XACCL_FAIL 3
+#define ADIS16480_DIAG_STAT_YACCL_FAIL 4
+#define ADIS16480_DIAG_STAT_ZACCL_FAIL 5
+#define ADIS16480_DIAG_STAT_XMAGN_FAIL 8
+#define ADIS16480_DIAG_STAT_YMAGN_FAIL 9
+#define ADIS16480_DIAG_STAT_ZMAGN_FAIL 10
+#define ADIS16480_DIAG_STAT_BARO_FAIL 11
+
+static const char * const adis16480_status_error_msgs[] = {
+ [ADIS16480_DIAG_STAT_XGYRO_FAIL] = "X-axis gyroscope self-test failure",
+ [ADIS16480_DIAG_STAT_YGYRO_FAIL] = "Y-axis gyroscope self-test failure",
+ [ADIS16480_DIAG_STAT_ZGYRO_FAIL] = "Z-axis gyroscope self-test failure",
+ [ADIS16480_DIAG_STAT_XACCL_FAIL] = "X-axis accelerometer self-test failure",
+ [ADIS16480_DIAG_STAT_YACCL_FAIL] = "Y-axis accelerometer self-test failure",
+ [ADIS16480_DIAG_STAT_ZACCL_FAIL] = "Z-axis accelerometer self-test failure",
+ [ADIS16480_DIAG_STAT_XMAGN_FAIL] = "X-axis magnetometer self-test failure",
+ [ADIS16480_DIAG_STAT_YMAGN_FAIL] = "Y-axis magnetometer self-test failure",
+ [ADIS16480_DIAG_STAT_ZMAGN_FAIL] = "Z-axis magnetometer self-test failure",
+ [ADIS16480_DIAG_STAT_BARO_FAIL] = "Barometer self-test failure",
+};
+
+static const struct adis_data adis16480_data = {
+ .diag_stat_reg = ADIS16480_REG_DIAG_STS,
+ .glob_cmd_reg = ADIS16480_REG_GLOB_CMD,
+ .has_paging = true,
+
+ .read_delay = 5,
+ .write_delay = 5,
+
+ .status_error_msgs = adis16480_status_error_msgs,
+ .status_error_mask = BIT(ADIS16480_DIAG_STAT_XGYRO_FAIL) |
+ BIT(ADIS16480_DIAG_STAT_YGYRO_FAIL) |
+ BIT(ADIS16480_DIAG_STAT_ZGYRO_FAIL) |
+ BIT(ADIS16480_DIAG_STAT_XACCL_FAIL) |
+ BIT(ADIS16480_DIAG_STAT_YACCL_FAIL) |
+ BIT(ADIS16480_DIAG_STAT_ZACCL_FAIL) |
+ BIT(ADIS16480_DIAG_STAT_XMAGN_FAIL) |
+ BIT(ADIS16480_DIAG_STAT_YMAGN_FAIL) |
+ BIT(ADIS16480_DIAG_STAT_ZMAGN_FAIL) |
+ BIT(ADIS16480_DIAG_STAT_BARO_FAIL),
+
+ .enable_irq = adis16480_enable_irq,
+};
+
+static int adis16480_probe(struct spi_device *spi)
+{
+ const struct spi_device_id *id = spi_get_device_id(spi);
+ struct iio_dev *indio_dev;
+ struct adis16480 *st;
+ int ret;
+
+ indio_dev = iio_device_alloc(sizeof(*st));
+ if (indio_dev == NULL)
+ return -ENOMEM;
+
+ spi_set_drvdata(spi, indio_dev);
+
+ st = iio_priv(indio_dev);
+
+ st->chip_info = &adis16480_chip_info[id->driver_data];
+ indio_dev->dev.parent = &spi->dev;
+ indio_dev->name = spi_get_device_id(spi)->name;
+ indio_dev->channels = st->chip_info->channels;
+ indio_dev->num_channels = st->chip_info->num_channels;
+ indio_dev->info = &adis16480_info;
+ indio_dev->modes = INDIO_DIRECT_MODE;
+
+ ret = adis_init(&st->adis, indio_dev, spi, &adis16480_data);
+ if (ret)
+ goto error_free_dev;
+
+ ret = adis_setup_buffer_and_trigger(&st->adis, indio_dev, NULL);
+ if (ret)
+ goto error_free_dev;
+
+ ret = adis16480_initial_setup(indio_dev);
+ if (ret)
+ goto error_cleanup_buffer;
+
+ ret = iio_device_register(indio_dev);
+ if (ret)
+ goto error_stop_device;
+
+ adis16480_debugfs_init(indio_dev);
+
+ return 0;
+
+error_stop_device:
+ adis16480_stop_device(indio_dev);
+error_cleanup_buffer:
+ adis_cleanup_buffer_and_trigger(&st->adis, indio_dev);
+error_free_dev:
+ iio_device_free(indio_dev);
+ return ret;
+}
+
+static int adis16480_remove(struct spi_device *spi)
+{
+ struct iio_dev *indio_dev = spi_get_drvdata(spi);
+ struct adis16480 *st = iio_priv(indio_dev);
+
+ iio_device_unregister(indio_dev);
+ adis16480_stop_device(indio_dev);
+
+ adis_cleanup_buffer_and_trigger(&st->adis, indio_dev);
+
+ iio_device_free(indio_dev);
+
+ return 0;
+}
+
+static const struct spi_device_id adis16480_ids[] = {
+ { "adis16375", ADIS16375 },
+ { "adis16480", ADIS16480 },
+ { "adis16485", ADIS16485 },
+ { "adis16488", ADIS16488 },
+ { }
+};
+MODULE_DEVICE_TABLE(spi, adis16480_ids);
+
+static struct spi_driver adis16480_driver = {
+ .driver = {
+ .name = "adis16480",
+ .owner = THIS_MODULE,
+ },
+ .id_table = adis16480_ids,
+ .probe = adis16480_probe,
+ .remove = adis16480_remove,
+};
+module_spi_driver(adis16480_driver);
+
+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
+MODULE_DESCRIPTION("Analog Devices ADIS16480 IMU driver");
+MODULE_LICENSE("GPL v2");
--- /dev/null
+/*
+ * Common library for ADIS16XXX devices
+ *
+ * Copyright 2012 Analog Devices Inc.
+ * Author: Lars-Peter Clausen <lars@metafoo.de>
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/export.h>
+#include <linux/interrupt.h>
+#include <linux/mutex.h>
+#include <linux/kernel.h>
+#include <linux/spi/spi.h>
+#include <linux/slab.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
+#include <linux/iio/imu/adis.h>
+
+int adis_update_scan_mode(struct iio_dev *indio_dev,
+ const unsigned long *scan_mask)
+{
+ struct adis *adis = iio_device_get_drvdata(indio_dev);
+ const struct iio_chan_spec *chan;
+ unsigned int scan_count;
+ unsigned int i, j;
+ __be16 *tx, *rx;
+
+ kfree(adis->xfer);
+ kfree(adis->buffer);
+
+ scan_count = indio_dev->scan_bytes / 2;
+
+ adis->xfer = kcalloc(scan_count + 1, sizeof(*adis->xfer), GFP_KERNEL);
+ if (!adis->xfer)
+ return -ENOMEM;
+
+ adis->buffer = kzalloc(indio_dev->scan_bytes * 2, GFP_KERNEL);
+ if (!adis->buffer)
+ return -ENOMEM;
+
+ rx = adis->buffer;
+ tx = rx + indio_dev->scan_bytes;
+
+ spi_message_init(&adis->msg);
+
+ for (j = 0; j <= scan_count; j++) {
+ adis->xfer[j].bits_per_word = 8;
+ if (j != scan_count)
+ adis->xfer[j].cs_change = 1;
+ adis->xfer[j].len = 2;
+ adis->xfer[j].delay_usecs = adis->data->read_delay;
+ if (j < scan_count)
+ adis->xfer[j].tx_buf = &tx[j];
+ if (j >= 1)
+ adis->xfer[j].rx_buf = &rx[j - 1];
+ spi_message_add_tail(&adis->xfer[j], &adis->msg);
+ }
+
+ chan = indio_dev->channels;
+ for (i = 0; i < indio_dev->num_channels; i++, chan++) {
+ if (!test_bit(chan->scan_index, scan_mask))
+ continue;
+ if (chan->scan_type.storagebits == 32)
+ *tx++ = cpu_to_be16((chan->address + 2) << 8);
+ *tx++ = cpu_to_be16(chan->address << 8);
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(adis_update_scan_mode);
+
+static irqreturn_t adis_trigger_handler(int irq, void *p)
+{
+ struct iio_poll_func *pf = p;
+ struct iio_dev *indio_dev = pf->indio_dev;
+ struct adis *adis = iio_device_get_drvdata(indio_dev);
+ int ret;
+
+ if (!adis->buffer)
+ return -ENOMEM;
+
+ if (adis->data->has_paging) {
+ mutex_lock(&adis->txrx_lock);
+ if (adis->current_page != 0) {
+ adis->tx[0] = ADIS_WRITE_REG(ADIS_REG_PAGE_ID);
+ adis->tx[1] = 0;
+ spi_write(adis->spi, adis->tx, 2);
+ }
+ }
+
+ ret = spi_sync(adis->spi, &adis->msg);
+ if (ret)
+ dev_err(&adis->spi->dev, "Failed to read data: %d", ret);
+
+
+ if (adis->data->has_paging) {
+ adis->current_page = 0;
+ mutex_unlock(&adis->txrx_lock);
+ }
+
+ /* Guaranteed to be aligned with 8 byte boundary */
+ if (indio_dev->scan_timestamp) {
+ void *b = adis->buffer + indio_dev->scan_bytes - sizeof(s64);
+ *(s64 *)b = pf->timestamp;
+ }
+
+ iio_push_to_buffers(indio_dev, adis->buffer);
+
+ iio_trigger_notify_done(indio_dev->trig);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * adis_setup_buffer_and_trigger() - Sets up buffer and trigger for the adis device
+ * @adis: The adis device.
+ * @indio_dev: The IIO device.
+ * @trigger_handler: Optional trigger handler, may be NULL.
+ *
+ * Returns 0 on success, a negative error code otherwise.
+ *
+ * This function sets up the buffer and trigger for a adis devices. If
+ * 'trigger_handler' is NULL the default trigger handler will be used. The
+ * default trigger handler will simply read the registers assigned to the
+ * currently active channels.
+ *
+ * adis_cleanup_buffer_and_trigger() should be called to free the resources
+ * allocated by this function.
+ */
+int adis_setup_buffer_and_trigger(struct adis *adis, struct iio_dev *indio_dev,
+ irqreturn_t (*trigger_handler)(int, void *))
+{
+ int ret;
+
+ if (!trigger_handler)
+ trigger_handler = adis_trigger_handler;
+
+ ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
+ trigger_handler, NULL);
+ if (ret)
+ return ret;
+
+ if (adis->spi->irq) {
+ ret = adis_probe_trigger(adis, indio_dev);
+ if (ret)
+ goto error_buffer_cleanup;
+ }
+ return 0;
+
+error_buffer_cleanup:
+ iio_triggered_buffer_cleanup(indio_dev);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(adis_setup_buffer_and_trigger);
+
+/**
+ * adis_cleanup_buffer_and_trigger() - Free buffer and trigger resources
+ * @adis: The adis device.
+ * @indio_dev: The IIO device.
+ *
+ * Frees resources allocated by adis_setup_buffer_and_trigger()
+ */
+void adis_cleanup_buffer_and_trigger(struct adis *adis,
+ struct iio_dev *indio_dev)
+{
+ if (adis->spi->irq)
+ adis_remove_trigger(adis);
+ kfree(adis->buffer);
+ kfree(adis->xfer);
+ iio_triggered_buffer_cleanup(indio_dev);
+}
+EXPORT_SYMBOL_GPL(adis_cleanup_buffer_and_trigger);
--- /dev/null
+/*
+ * Common library for ADIS16XXX devices
+ *
+ * Copyright 2012 Analog Devices Inc.
+ * Author: Lars-Peter Clausen <lars@metafoo.de>
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/spi/spi.h>
+#include <linux/export.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/trigger.h>
+#include <linux/iio/imu/adis.h>
+
+static int adis_data_rdy_trigger_set_state(struct iio_trigger *trig,
+ bool state)
+{
+ struct adis *adis = trig->private_data;
+
+ return adis_enable_irq(adis, state);
+}
+
+static const struct iio_trigger_ops adis_trigger_ops = {
+ .owner = THIS_MODULE,
+ .set_trigger_state = &adis_data_rdy_trigger_set_state,
+};
+
+/**
+ * adis_probe_trigger() - Sets up trigger for a adis device
+ * @adis: The adis device
+ * @indio_dev: The IIO device
+ *
+ * Returns 0 on success or a negative error code
+ *
+ * adis_remove_trigger() should be used to free the trigger.
+ */
+int adis_probe_trigger(struct adis *adis, struct iio_dev *indio_dev)
+{
+ int ret;
+
+ adis->trig = iio_trigger_alloc("%s-dev%d", indio_dev->name,
+ indio_dev->id);
+ if (adis->trig == NULL)
+ return -ENOMEM;
+
+ ret = request_irq(adis->spi->irq,
+ &iio_trigger_generic_data_rdy_poll,
+ IRQF_TRIGGER_RISING,
+ indio_dev->name,
+ adis->trig);
+ if (ret)
+ goto error_free_trig;
+
+ adis->trig->dev.parent = &adis->spi->dev;
+ adis->trig->ops = &adis_trigger_ops;
+ adis->trig->private_data = adis;
+ ret = iio_trigger_register(adis->trig);
+
+ indio_dev->trig = adis->trig;
+ if (ret)
+ goto error_free_irq;
+
+ return 0;
+
+error_free_irq:
+ free_irq(adis->spi->irq, adis->trig);
+error_free_trig:
+ iio_trigger_free(adis->trig);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(adis_probe_trigger);
+
+/**
+ * adis_remove_trigger() - Remove trigger for a adis devices
+ * @adis: The adis device
+ *
+ * Removes the trigger previously registered with adis_probe_trigger().
+ */
+void adis_remove_trigger(struct adis *adis)
+{
+ iio_trigger_unregister(adis->trig);
+ free_irq(adis->spi->irq, adis->trig);
+ iio_trigger_free(adis->trig);
+}
+EXPORT_SYMBOL_GPL(adis_remove_trigger);
[IIO_CAPACITANCE] = "capacitance",
[IIO_ALTVOLTAGE] = "altvoltage",
[IIO_CCT] = "cct",
+ [IIO_PRESSURE] = "pressure",
};
static const char * const iio_modifier_names[] = {
}
}
+/**
+ * iio_str_to_fixpoint() - Parse a fixed-point number from a string
+ * @str: The string to parse
+ * @fract_mult: Multiplier for the first decimal place, should be a power of 10
+ * @integer: The integer part of the number
+ * @fract: The fractional part of the number
+ *
+ * Returns 0 on success, or a negative error code if the string could not be
+ * parsed.
+ */
+int iio_str_to_fixpoint(const char *str, int fract_mult,
+ int *integer, int *fract)
+{
+ int i = 0, f = 0;
+ bool integer_part = true, negative = false;
+
+ if (str[0] == '-') {
+ negative = true;
+ str++;
+ } else if (str[0] == '+') {
+ str++;
+ }
+
+ while (*str) {
+ if ('0' <= *str && *str <= '9') {
+ if (integer_part) {
+ i = i * 10 + *str - '0';
+ } else {
+ f += fract_mult * (*str - '0');
+ fract_mult /= 10;
+ }
+ } else if (*str == '\n') {
+ if (*(str + 1) == '\0')
+ break;
+ else
+ return -EINVAL;
+ } else if (*str == '.' && integer_part) {
+ integer_part = false;
+ } else {
+ return -EINVAL;
+ }
+ str++;
+ }
+
+ if (negative) {
+ if (i)
+ i = -i;
+ else
+ f = -f;
+ }
+
+ *integer = i;
+ *fract = f;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(iio_str_to_fixpoint);
+
static ssize_t iio_write_channel_info(struct device *dev,
struct device_attribute *attr,
const char *buf,
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
- int ret, integer = 0, fract = 0, fract_mult = 100000;
- bool integer_part = true, negative = false;
+ int ret, fract_mult = 100000;
+ int integer, fract;
/* Assumes decimal - precision based on number of digits */
if (!indio_dev->info->write_raw)
return -EINVAL;
}
- if (buf[0] == '-') {
- negative = true;
- buf++;
- } else if (buf[0] == '+') {
- buf++;
- }
-
- while (*buf) {
- if ('0' <= *buf && *buf <= '9') {
- if (integer_part)
- integer = integer*10 + *buf - '0';
- else {
- fract += fract_mult*(*buf - '0');
- fract_mult /= 10;
- }
- } else if (*buf == '\n') {
- if (*(buf + 1) == '\0')
- break;
- else
- return -EINVAL;
- } else if (*buf == '.' && integer_part) {
- integer_part = false;
- } else {
- return -EINVAL;
- }
- buf++;
- }
- if (negative) {
- if (integer)
- integer = -integer;
- else
- fract = -fract;
- }
+ ret = iio_str_to_fixpoint(buf, fract_mult, &integer, &fract);
+ if (ret)
+ return ret;
ret = indio_dev->info->write_raw(indio_dev, this_attr->c,
integer, fract, this_attr->address);
ret = iio_device_add_event_sysfs(indio_dev,
&indio_dev->channels[j]);
if (ret < 0)
- goto error_clear_attrs;
+ return ret;
attrcount += ret;
}
return attrcount;
-
-error_clear_attrs:
- __iio_remove_event_config_attrs(indio_dev);
-
- return ret;
}
static bool iio_check_for_dynamic_events(struct iio_dev *indio_dev)
goto error_free_dev;
}
- channels = kmemdup(als_channels,
- sizeof(als_channels),
- GFP_KERNEL);
+ channels = kmemdup(als_channels, sizeof(als_channels), GFP_KERNEL);
if (!channels) {
+ ret = -ENOMEM;
dev_err(&pdev->dev, "failed to duplicate channels\n");
goto error_free_dev;
}
goto error_free_dev;
}
- channels = kmemdup(magn_3d_channels,
- sizeof(magn_3d_channels),
- GFP_KERNEL);
+ channels = kmemdup(magn_3d_channels, sizeof(magn_3d_channels),
+ GFP_KERNEL);
if (!channels) {
+ ret = -ENOMEM;
dev_err(&pdev->dev, "failed to duplicate channels\n");
goto error_free_dev;
}
config ADIS16201
tristate "Analog Devices ADIS16201 Dual-Axis Digital Inclinometer and Accelerometer"
depends on SPI
- select IIO_TRIGGER if IIO_BUFFER
- select IIO_SW_RING if IIO_BUFFER
+ select IIO_ADIS_LIB
+ select IIO_ADIS_LIB_BUFFER if IIO_BUFFER
help
Say yes here to build support for Analog Devices adis16201 dual-axis
digital inclinometer and accelerometer.
config ADIS16203
tristate "Analog Devices ADIS16203 Programmable 360 Degrees Inclinometer"
depends on SPI
- select IIO_TRIGGER if IIO_BUFFER
- select IIO_SW_RING if IIO_BUFFER
+ select IIO_ADIS_LIB
+ select IIO_ADIS_LIB_BUFFER if IIO_BUFFER
help
Say yes here to build support for Analog Devices adis16203 Programmable
360 Degrees Inclinometer.
config ADIS16204
tristate "Analog Devices ADIS16204 Programmable High-g Digital Impact Sensor and Recorder"
depends on SPI
- select IIO_TRIGGER if IIO_BUFFER
- select IIO_SW_RING if IIO_BUFFER
+ select IIO_ADIS_LIB
+ select IIO_ADIS_LIB_BUFFER if IIO_BUFFER
help
Say yes here to build support for Analog Devices adis16204 Programmable
High-g Digital Impact Sensor and Recorder.
config ADIS16209
tristate "Analog Devices ADIS16209 Dual-Axis Digital Inclinometer and Accelerometer"
depends on SPI
- select IIO_TRIGGER if IIO_BUFFER
- select IIO_SW_RING if IIO_BUFFER
+ select IIO_ADIS_LIB
+ select IIO_ADIS_LIB_BUFFER if IIO_BUFFER
help
Say yes here to build support for Analog Devices adis16209 dual-axis digital inclinometer
and accelerometer.
config ADIS16220
tristate "Analog Devices ADIS16220 Programmable Digital Vibration Sensor"
depends on SPI
+ select IIO_ADIS_LIB
help
Say yes here to build support for Analog Devices adis16220 programmable
digital vibration sensor.
config ADIS16240
tristate "Analog Devices ADIS16240 Programmable Impact Sensor and Recorder"
depends on SPI
- select IIO_TRIGGER if IIO_BUFFER
- select IIO_SW_RING if IIO_BUFFER
+ select IIO_ADIS_LIB
+ select IIO_ADIS_LIB_BUFFER if IIO_BUFFER
help
Say yes here to build support for Analog Devices adis16240 programmable
impact Sensor and recorder.
#
adis16201-y := adis16201_core.o
-adis16201-$(CONFIG_IIO_BUFFER) += adis16201_ring.o adis16201_trigger.o
obj-$(CONFIG_ADIS16201) += adis16201.o
adis16203-y := adis16203_core.o
-adis16203-$(CONFIG_IIO_BUFFER) += adis16203_ring.o adis16203_trigger.o
obj-$(CONFIG_ADIS16203) += adis16203.o
adis16204-y := adis16204_core.o
-adis16204-$(CONFIG_IIO_BUFFER) += adis16204_ring.o adis16204_trigger.o
obj-$(CONFIG_ADIS16204) += adis16204.o
adis16209-y := adis16209_core.o
-adis16209-$(CONFIG_IIO_BUFFER) += adis16209_ring.o adis16209_trigger.o
obj-$(CONFIG_ADIS16209) += adis16209.o
adis16220-y := adis16220_core.o
obj-$(CONFIG_ADIS16220) += adis16220.o
adis16240-y := adis16240_core.o
-adis16240-$(CONFIG_IIO_BUFFER) += adis16240_ring.o adis16240_trigger.o
obj-$(CONFIG_ADIS16240) += adis16240.o
obj-$(CONFIG_KXSD9) += kxsd9.o
#define ADIS16201_STARTUP_DELAY 220 /* ms */
-#define ADIS16201_READ_REG(a) a
-#define ADIS16201_WRITE_REG(a) ((a) | 0x80)
-
#define ADIS16201_FLASH_CNT 0x00 /* Flash memory write count */
#define ADIS16201_SUPPLY_OUT 0x02 /* Output, power supply */
#define ADIS16201_XACCL_OUT 0x04 /* Output, x-axis accelerometer */
#define ADIS16201_DIAG_STAT 0x3C /* Diagnostics, system status register */
#define ADIS16201_GLOB_CMD 0x3E /* Operation, system command register */
-#define ADIS16201_OUTPUTS 7
-
/* MSC_CTRL */
#define ADIS16201_MSC_CTRL_SELF_TEST_EN (1 << 8) /* Self-test enable */
#define ADIS16201_MSC_CTRL_DATA_RDY_EN (1 << 2) /* Data-ready enable: 1 = enabled, 0 = disabled */
/* DIAG_STAT */
#define ADIS16201_DIAG_STAT_ALARM2 (1<<9) /* Alarm 2 status: 1 = alarm active, 0 = alarm inactive */
#define ADIS16201_DIAG_STAT_ALARM1 (1<<8) /* Alarm 1 status: 1 = alarm active, 0 = alarm inactive */
-#define ADIS16201_DIAG_STAT_SPI_FAIL (1<<3) /* SPI communications failure */
-#define ADIS16201_DIAG_STAT_FLASH_UPT (1<<2) /* Flash update failure */
-#define ADIS16201_DIAG_STAT_POWER_HIGH (1<<1) /* Power supply above 3.625 V */
-#define ADIS16201_DIAG_STAT_POWER_LOW (1<<0) /* Power supply below 3.15 V */
+#define ADIS16201_DIAG_STAT_SPI_FAIL_BIT 3 /* SPI communications failure */
+#define ADIS16201_DIAG_STAT_FLASH_UPT_BIT 2 /* Flash update failure */
+#define ADIS16201_DIAG_STAT_POWER_HIGH_BIT 1 /* Power supply above 3.625 V */
+#define ADIS16201_DIAG_STAT_POWER_LOW_BIT 0 /* Power supply below 3.15 V */
/* GLOB_CMD */
#define ADIS16201_GLOB_CMD_SW_RESET (1<<7)
#define ADIS16201_GLOB_CMD_FACTORY_CAL (1<<1)
-#define ADIS16201_MAX_TX 14
-#define ADIS16201_MAX_RX 14
-
#define ADIS16201_ERROR_ACTIVE (1<<14)
-/**
- * struct adis16201_state - device instance specific data
- * @us: actual spi_device
- * @trig: data ready trigger registered with iio
- * @tx: transmit buffer
- * @rx: receive buffer
- * @buf_lock: mutex to protect tx and rx
- **/
-struct adis16201_state {
- struct spi_device *us;
- struct iio_trigger *trig;
- struct mutex buf_lock;
- u8 tx[14] ____cacheline_aligned;
- u8 rx[14];
-};
-
-int adis16201_set_irq(struct iio_dev *indio_dev, bool enable);
-
enum adis16201_scan {
- ADIS16201_SCAN_SUPPLY,
ADIS16201_SCAN_ACC_X,
ADIS16201_SCAN_ACC_Y,
- ADIS16201_SCAN_AUX_ADC,
- ADIS16201_SCAN_TEMP,
ADIS16201_SCAN_INCLI_X,
ADIS16201_SCAN_INCLI_Y,
+ ADIS16201_SCAN_SUPPLY,
+ ADIS16201_SCAN_AUX_ADC,
+ ADIS16201_SCAN_TEMP,
};
-#ifdef CONFIG_IIO_BUFFER
-void adis16201_remove_trigger(struct iio_dev *indio_dev);
-int adis16201_probe_trigger(struct iio_dev *indio_dev);
-
-ssize_t adis16201_read_data_from_ring(struct device *dev,
- struct device_attribute *attr,
- char *buf);
-
-int adis16201_configure_ring(struct iio_dev *indio_dev);
-void adis16201_unconfigure_ring(struct iio_dev *indio_dev);
-
-#else /* CONFIG_IIO_BUFFER */
-
-static inline void adis16201_remove_trigger(struct iio_dev *indio_dev)
-{
-}
-
-static inline int adis16201_probe_trigger(struct iio_dev *indio_dev)
-{
- return 0;
-}
-
-static inline ssize_t
-adis16201_read_data_from_ring(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return 0;
-}
-
-static int adis16201_configure_ring(struct iio_dev *indio_dev)
-{
- return 0;
-}
-
-static inline void adis16201_unconfigure_ring(struct iio_dev *indio_dev)
-{
-}
-
-static inline int adis16201_initialize_ring(struct iio_ring_buffer *ring)
-{
- return 0;
-}
-
-static inline void adis16201_uninitialize_ring(struct iio_ring_buffer *ring)
-{
-}
-
-#endif /* CONFIG_IIO_BUFFER */
#endif /* SPI_ADIS16201_H_ */
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/iio/buffer.h>
+#include <linux/iio/imu/adis.h>
#include "adis16201.h"
-enum adis16201_chan {
- in_supply,
- temp,
- accel_x,
- accel_y,
- incli_x,
- incli_y,
- in_aux,
-};
-
-/**
- * adis16201_spi_write_reg_8() - write single byte to a register
- * @dev: device associated with child of actual device (iio_dev or iio_trig)
- * @reg_address: the address of the register to be written
- * @val: the value to write
- **/
-static int adis16201_spi_write_reg_8(struct iio_dev *indio_dev,
- u8 reg_address,
- u8 val)
-{
- int ret;
- struct adis16201_state *st = iio_priv(indio_dev);
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = ADIS16201_WRITE_REG(reg_address);
- st->tx[1] = val;
-
- ret = spi_write(st->us, st->tx, 2);
- mutex_unlock(&st->buf_lock);
-
- return ret;
-}
-
-/**
- * adis16201_spi_write_reg_16() - write 2 bytes to a pair of registers
- * @indio_dev: iio device associated with child of actual device
- * @reg_address: the address of the lower of the two registers. Second register
- * is assumed to have address one greater.
- * @val: value to be written
- **/
-static int adis16201_spi_write_reg_16(struct iio_dev *indio_dev,
- u8 lower_reg_address,
- u16 value)
-{
- int ret;
- struct spi_message msg;
- struct adis16201_state *st = iio_priv(indio_dev);
- struct spi_transfer xfers[] = {
- {
- .tx_buf = st->tx,
- .bits_per_word = 8,
- .len = 2,
- .cs_change = 1,
- }, {
- .tx_buf = st->tx + 2,
- .bits_per_word = 8,
- .len = 2,
- },
- };
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = ADIS16201_WRITE_REG(lower_reg_address);
- st->tx[1] = value & 0xFF;
- st->tx[2] = ADIS16201_WRITE_REG(lower_reg_address + 1);
- st->tx[3] = (value >> 8) & 0xFF;
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfers[0], &msg);
- spi_message_add_tail(&xfers[1], &msg);
- ret = spi_sync(st->us, &msg);
- mutex_unlock(&st->buf_lock);
-
- return ret;
-}
-
-/**
- * adis16201_spi_read_reg_16() - read 2 bytes from a 16-bit register
- * @indio_dev: iio device associated with child of actual device
- * @reg_address: the address of the lower of the two registers. Second register
- * is assumed to have address one greater.
- * @val: somewhere to pass back the value read
- **/
-static int adis16201_spi_read_reg_16(struct iio_dev *indio_dev,
- u8 lower_reg_address,
- u16 *val)
-{
- struct spi_message msg;
- struct adis16201_state *st = iio_priv(indio_dev);
- int ret;
- struct spi_transfer xfers[] = {
- {
- .tx_buf = st->tx,
- .bits_per_word = 8,
- .len = 2,
- .cs_change = 1,
- .delay_usecs = 20,
- }, {
- .rx_buf = st->rx,
- .bits_per_word = 8,
- .len = 2,
- .delay_usecs = 20,
- },
- };
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = ADIS16201_READ_REG(lower_reg_address);
- st->tx[1] = 0;
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfers[0], &msg);
- spi_message_add_tail(&xfers[1], &msg);
- ret = spi_sync(st->us, &msg);
- if (ret) {
- dev_err(&st->us->dev, "problem when reading 16 bit register 0x%02X",
- lower_reg_address);
- goto error_ret;
- }
- *val = (st->rx[0] << 8) | st->rx[1];
-
-error_ret:
- mutex_unlock(&st->buf_lock);
- return ret;
-}
-
-static int adis16201_reset(struct iio_dev *indio_dev)
-{
- int ret;
- struct adis16201_state *st = iio_priv(indio_dev);
-
- ret = adis16201_spi_write_reg_8(indio_dev,
- ADIS16201_GLOB_CMD,
- ADIS16201_GLOB_CMD_SW_RESET);
- if (ret)
- dev_err(&st->us->dev, "problem resetting device");
-
- return ret;
-}
-
-int adis16201_set_irq(struct iio_dev *indio_dev, bool enable)
-{
- int ret = 0;
- u16 msc;
-
- ret = adis16201_spi_read_reg_16(indio_dev, ADIS16201_MSC_CTRL, &msc);
- if (ret)
- goto error_ret;
-
- msc |= ADIS16201_MSC_CTRL_ACTIVE_HIGH;
- msc &= ~ADIS16201_MSC_CTRL_DATA_RDY_DIO1;
- if (enable)
- msc |= ADIS16201_MSC_CTRL_DATA_RDY_EN;
- else
- msc &= ~ADIS16201_MSC_CTRL_DATA_RDY_EN;
-
- ret = adis16201_spi_write_reg_16(indio_dev, ADIS16201_MSC_CTRL, msc);
-
-error_ret:
- return ret;
-}
-
-static int adis16201_check_status(struct iio_dev *indio_dev)
-{
- u16 status;
- int ret;
-
- ret = adis16201_spi_read_reg_16(indio_dev,
- ADIS16201_DIAG_STAT, &status);
- if (ret < 0) {
- dev_err(&indio_dev->dev, "Reading status failed\n");
- goto error_ret;
- }
- ret = status & 0xF;
- if (ret)
- ret = -EFAULT;
-
- if (status & ADIS16201_DIAG_STAT_SPI_FAIL)
- dev_err(&indio_dev->dev, "SPI failure\n");
- if (status & ADIS16201_DIAG_STAT_FLASH_UPT)
- dev_err(&indio_dev->dev, "Flash update failed\n");
- if (status & ADIS16201_DIAG_STAT_POWER_HIGH)
- dev_err(&indio_dev->dev, "Power supply above 3.625V\n");
- if (status & ADIS16201_DIAG_STAT_POWER_LOW)
- dev_err(&indio_dev->dev, "Power supply below 3.15V\n");
-
-error_ret:
- return ret;
-}
-
-static int adis16201_self_test(struct iio_dev *indio_dev)
-{
- int ret;
- ret = adis16201_spi_write_reg_16(indio_dev,
- ADIS16201_MSC_CTRL,
- ADIS16201_MSC_CTRL_SELF_TEST_EN);
- if (ret) {
- dev_err(&indio_dev->dev, "problem starting self test");
- goto err_ret;
- }
-
- ret = adis16201_check_status(indio_dev);
-
-err_ret:
- return ret;
-}
-
-static int adis16201_initial_setup(struct iio_dev *indio_dev)
-{
- int ret;
- struct device *dev = &indio_dev->dev;
-
- /* Disable IRQ */
- ret = adis16201_set_irq(indio_dev, false);
- if (ret) {
- dev_err(dev, "disable irq failed");
- goto err_ret;
- }
-
- /* Do self test */
- ret = adis16201_self_test(indio_dev);
- if (ret) {
- dev_err(dev, "self test failure");
- goto err_ret;
- }
-
- /* Read status register to check the result */
- ret = adis16201_check_status(indio_dev);
- if (ret) {
- adis16201_reset(indio_dev);
- dev_err(dev, "device not playing ball -> reset");
- msleep(ADIS16201_STARTUP_DELAY);
- ret = adis16201_check_status(indio_dev);
- if (ret) {
- dev_err(dev, "giving up");
- goto err_ret;
- }
- }
-
-err_ret:
- return ret;
-}
-
-static u8 adis16201_addresses[7][2] = {
- [in_supply] = { ADIS16201_SUPPLY_OUT, },
- [temp] = { ADIS16201_TEMP_OUT },
- [accel_x] = { ADIS16201_XACCL_OUT, ADIS16201_XACCL_OFFS },
- [accel_y] = { ADIS16201_YACCL_OUT, ADIS16201_YACCL_OFFS },
- [in_aux] = { ADIS16201_AUX_ADC },
- [incli_x] = { ADIS16201_XINCL_OUT },
- [incli_y] = { ADIS16201_YINCL_OUT },
+static const u8 adis16201_addresses[] = {
+ [ADIS16201_SCAN_ACC_X] = ADIS16201_XACCL_OFFS,
+ [ADIS16201_SCAN_ACC_Y] = ADIS16201_YACCL_OFFS,
+ [ADIS16201_SCAN_INCLI_X] = ADIS16201_XINCL_OFFS,
+ [ADIS16201_SCAN_INCLI_Y] = ADIS16201_YINCL_OFFS,
};
static int adis16201_read_raw(struct iio_dev *indio_dev,
int *val, int *val2,
long mask)
{
+ struct adis *st = iio_priv(indio_dev);
int ret;
int bits;
u8 addr;
switch (mask) {
case IIO_CHAN_INFO_RAW:
- mutex_lock(&indio_dev->mlock);
- addr = adis16201_addresses[chan->address][0];
- ret = adis16201_spi_read_reg_16(indio_dev, addr, &val16);
- if (ret) {
- mutex_unlock(&indio_dev->mlock);
- return ret;
- }
-
- if (val16 & ADIS16201_ERROR_ACTIVE) {
- ret = adis16201_check_status(indio_dev);
- if (ret) {
- mutex_unlock(&indio_dev->mlock);
- return ret;
- }
- }
- val16 = val16 & ((1 << chan->scan_type.realbits) - 1);
- if (chan->scan_type.sign == 's')
- val16 = (s16)(val16 <<
- (16 - chan->scan_type.realbits)) >>
- (16 - chan->scan_type.realbits);
- *val = val16;
- mutex_unlock(&indio_dev->mlock);
- return IIO_VAL_INT;
+ return adis_single_conversion(indio_dev, chan,
+ ADIS16201_ERROR_ACTIVE, val);
case IIO_CHAN_INFO_SCALE:
switch (chan->type) {
case IIO_VOLTAGE:
return -EINVAL;
}
mutex_lock(&indio_dev->mlock);
- addr = adis16201_addresses[chan->address][1];
- ret = adis16201_spi_read_reg_16(indio_dev, addr, &val16);
+ addr = adis16201_addresses[chan->scan_index];
+ ret = adis_read_reg_16(st, addr, &val16);
if (ret) {
mutex_unlock(&indio_dev->mlock);
return ret;
int val2,
long mask)
{
+ struct adis *st = iio_priv(indio_dev);
int bits;
s16 val16;
u8 addr;
return -EINVAL;
}
val16 = val & ((1 << bits) - 1);
- addr = adis16201_addresses[chan->address][1];
- return adis16201_spi_write_reg_16(indio_dev, addr, val16);
+ addr = adis16201_addresses[chan->scan_index];
+ return adis_write_reg_16(st, addr, val16);
}
return -EINVAL;
}
static const struct iio_chan_spec adis16201_channels[] = {
- {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 0,
- .extend_name = "supply",
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
- .address = in_supply,
- .scan_index = ADIS16201_SCAN_SUPPLY,
- .scan_type = {
- .sign = 'u',
- .realbits = 12,
- .storagebits = 16,
- },
- }, {
- .type = IIO_TEMP,
- .indexed = 1,
- .channel = 0,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SEPARATE_BIT |
- IIO_CHAN_INFO_OFFSET_SEPARATE_BIT,
- .address = temp,
- .scan_index = ADIS16201_SCAN_TEMP,
- .scan_type = {
- .sign = 'u',
- .realbits = 12,
- .storagebits = 16,
- },
- }, {
- .type = IIO_ACCEL,
- .modified = 1,
- .channel2 = IIO_MOD_X,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SHARED_BIT |
- IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT,
- .address = accel_x,
- .scan_index = ADIS16201_SCAN_ACC_X,
- .scan_type = {
- .sign = 's',
- .realbits = 14,
- .storagebits = 16,
- },
- }, {
- .type = IIO_ACCEL,
- .modified = 1,
- .channel2 = IIO_MOD_Y,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SHARED_BIT |
- IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT,
- .address = accel_y,
- .scan_index = ADIS16201_SCAN_ACC_Y,
- .scan_type = {
- .sign = 's',
- .realbits = 14,
- .storagebits = 16,
- },
- }, {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 1,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
- .address = in_aux,
- .scan_index = ADIS16201_SCAN_AUX_ADC,
- .scan_type = {
- .sign = 'u',
- .realbits = 12,
- .storagebits = 16,
- },
- }, {
- .type = IIO_INCLI,
- .modified = 1,
- .channel2 = IIO_MOD_X,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SHARED_BIT |
- IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT,
- .address = incli_x,
- .scan_index = ADIS16201_SCAN_INCLI_X,
- .scan_type = {
- .sign = 's',
- .realbits = 14,
- .storagebits = 16,
- },
- }, {
- .type = IIO_INCLI,
- .modified = 1,
- .channel2 = IIO_MOD_Y,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SHARED_BIT |
- IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT,
- .address = incli_y,
- .scan_index = ADIS16201_SCAN_INCLI_Y,
- .scan_type = {
- .sign = 's',
- .realbits = 14,
- .storagebits = 16,
- },
- },
+ ADIS_SUPPLY_CHAN(ADIS16201_SUPPLY_OUT, ADIS16201_SCAN_SUPPLY, 12),
+ ADIS_TEMP_CHAN(ADIS16201_TEMP_OUT, ADIS16201_SCAN_TEMP, 12),
+ ADIS_ACCEL_CHAN(X, ADIS16201_XACCL_OUT, ADIS16201_SCAN_ACC_X,
+ IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT, 14),
+ ADIS_ACCEL_CHAN(Y, ADIS16201_YACCL_OUT, ADIS16201_SCAN_ACC_Y,
+ IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT, 14),
+ ADIS_AUX_ADC_CHAN(ADIS16201_AUX_ADC, ADIS16201_SCAN_AUX_ADC, 12),
+ ADIS_INCLI_CHAN(X, ADIS16201_XINCL_OUT, ADIS16201_SCAN_INCLI_X,
+ IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT, 14),
+ ADIS_INCLI_CHAN(X, ADIS16201_YINCL_OUT, ADIS16201_SCAN_INCLI_Y,
+ IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT, 14),
IIO_CHAN_SOFT_TIMESTAMP(7)
};
static const struct iio_info adis16201_info = {
.read_raw = &adis16201_read_raw,
.write_raw = &adis16201_write_raw,
+ .update_scan_mode = adis_update_scan_mode,
.driver_module = THIS_MODULE,
};
+static const char * const adis16201_status_error_msgs[] = {
+ [ADIS16201_DIAG_STAT_SPI_FAIL_BIT] = "SPI failure",
+ [ADIS16201_DIAG_STAT_FLASH_UPT_BIT] = "Flash update failed",
+ [ADIS16201_DIAG_STAT_POWER_HIGH_BIT] = "Power supply above 3.625V",
+ [ADIS16201_DIAG_STAT_POWER_LOW_BIT] = "Power supply below 3.15V",
+};
+
+static const struct adis_data adis16201_data = {
+ .read_delay = 20,
+ .msc_ctrl_reg = ADIS16201_MSC_CTRL,
+ .glob_cmd_reg = ADIS16201_GLOB_CMD,
+ .diag_stat_reg = ADIS16201_DIAG_STAT,
+
+ .self_test_mask = ADIS16201_MSC_CTRL_SELF_TEST_EN,
+ .startup_delay = ADIS16201_STARTUP_DELAY,
+
+ .status_error_msgs = adis16201_status_error_msgs,
+ .status_error_mask = BIT(ADIS16201_DIAG_STAT_SPI_FAIL_BIT) |
+ BIT(ADIS16201_DIAG_STAT_FLASH_UPT_BIT) |
+ BIT(ADIS16201_DIAG_STAT_POWER_HIGH_BIT) |
+ BIT(ADIS16201_DIAG_STAT_POWER_LOW_BIT),
+};
+
static int __devinit adis16201_probe(struct spi_device *spi)
{
int ret;
- struct adis16201_state *st;
+ struct adis *st;
struct iio_dev *indio_dev;
/* setup the industrialio driver allocated elements */
/* this is only used for removal purposes */
spi_set_drvdata(spi, indio_dev);
- st->us = spi;
- mutex_init(&st->buf_lock);
-
indio_dev->name = spi->dev.driver->name;
indio_dev->dev.parent = &spi->dev;
indio_dev->info = &adis16201_info;
indio_dev->num_channels = ARRAY_SIZE(adis16201_channels);
indio_dev->modes = INDIO_DIRECT_MODE;
- ret = adis16201_configure_ring(indio_dev);
+ ret = adis_init(st, indio_dev, spi, &adis16201_data);
+ if (ret)
+ goto error_free_dev;
+ ret = adis_setup_buffer_and_trigger(st, indio_dev, NULL);
if (ret)
goto error_free_dev;
-
- ret = iio_buffer_register(indio_dev,
- adis16201_channels,
- ARRAY_SIZE(adis16201_channels));
- if (ret) {
- printk(KERN_ERR "failed to initialize the ring\n");
- goto error_unreg_ring_funcs;
- }
-
- if (spi->irq) {
- ret = adis16201_probe_trigger(indio_dev);
- if (ret)
- goto error_uninitialize_ring;
- }
/* Get the device into a sane initial state */
- ret = adis16201_initial_setup(indio_dev);
+ ret = adis_initial_startup(st);
if (ret)
- goto error_remove_trigger;
+ goto error_cleanup_buffer_trigger;
ret = iio_device_register(indio_dev);
if (ret < 0)
- goto error_remove_trigger;
+ goto error_cleanup_buffer_trigger;
return 0;
-error_remove_trigger:
- adis16201_remove_trigger(indio_dev);
-error_uninitialize_ring:
- iio_buffer_unregister(indio_dev);
-error_unreg_ring_funcs:
- adis16201_unconfigure_ring(indio_dev);
+error_cleanup_buffer_trigger:
+ adis_cleanup_buffer_and_trigger(st, indio_dev);
error_free_dev:
iio_device_free(indio_dev);
error_ret:
static int __devexit adis16201_remove(struct spi_device *spi)
{
struct iio_dev *indio_dev = spi_get_drvdata(spi);
+ struct adis *st = iio_priv(indio_dev);
iio_device_unregister(indio_dev);
- adis16201_remove_trigger(indio_dev);
- iio_buffer_unregister(indio_dev);
- adis16201_unconfigure_ring(indio_dev);
+ adis_cleanup_buffer_and_trigger(st, indio_dev);
iio_device_free(indio_dev);
return 0;
+++ /dev/null
-#include <linux/export.h>
-#include <linux/interrupt.h>
-#include <linux/mutex.h>
-#include <linux/kernel.h>
-#include <linux/spi/spi.h>
-#include <linux/slab.h>
-
-#include <linux/iio/iio.h>
-#include "../ring_sw.h"
-#include <linux/iio/trigger_consumer.h>
-#include "adis16201.h"
-
-
-/**
- * adis16201_read_ring_data() read data registers which will be placed into ring
- * @dev: device associated with child of actual device (iio_dev or iio_trig)
- * @rx: somewhere to pass back the value read
- **/
-static int adis16201_read_ring_data(struct iio_dev *indio_dev, u8 *rx)
-{
- struct spi_message msg;
- struct adis16201_state *st = iio_priv(indio_dev);
- struct spi_transfer xfers[ADIS16201_OUTPUTS + 1];
- int ret;
- int i;
-
- mutex_lock(&st->buf_lock);
-
- spi_message_init(&msg);
-
- memset(xfers, 0, sizeof(xfers));
- for (i = 0; i <= ADIS16201_OUTPUTS; i++) {
- xfers[i].bits_per_word = 8;
- xfers[i].cs_change = 1;
- xfers[i].len = 2;
- xfers[i].delay_usecs = 20;
- if (i < ADIS16201_OUTPUTS) {
- xfers[i].tx_buf = st->tx + 2 * i;
- st->tx[2 * i] = ADIS16201_READ_REG(ADIS16201_SUPPLY_OUT +
- 2 * i);
- st->tx[2 * i + 1] = 0;
- }
- if (i >= 1)
- xfers[i].rx_buf = rx + 2 * (i - 1);
- spi_message_add_tail(&xfers[i], &msg);
- }
-
- ret = spi_sync(st->us, &msg);
- if (ret)
- dev_err(&st->us->dev, "problem when burst reading");
-
- mutex_unlock(&st->buf_lock);
-
- return ret;
-}
-
-/* Whilst this makes a lot of calls to iio_sw_ring functions - it is to device
- * specific to be rolled into the core.
- */
-static irqreturn_t adis16201_trigger_handler(int irq, void *p)
-{
- struct iio_poll_func *pf = p;
- struct iio_dev *indio_dev = pf->indio_dev;
- struct adis16201_state *st = iio_priv(indio_dev);
-
- int i = 0;
- s16 *data;
-
- data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
- if (data == NULL) {
- dev_err(&st->us->dev, "memory alloc failed in ring bh");
- goto done;
- }
-
- if (!bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength)
- && adis16201_read_ring_data(indio_dev, st->rx) >= 0)
- for (; i < bitmap_weight(indio_dev->active_scan_mask,
- indio_dev->masklength); i++)
- data[i] = be16_to_cpup((__be16 *)&(st->rx[i*2]));
-
- /* Guaranteed to be aligned with 8 byte boundary */
- if (indio_dev->scan_timestamp)
- *((s64 *)(data + ((i + 3)/4)*4)) = pf->timestamp;
-
- iio_push_to_buffers(indio_dev, (u8 *)data);
-
- kfree(data);
-done:
- iio_trigger_notify_done(indio_dev->trig);
-
- return IRQ_HANDLED;
-}
-
-void adis16201_unconfigure_ring(struct iio_dev *indio_dev)
-{
- iio_dealloc_pollfunc(indio_dev->pollfunc);
- iio_sw_rb_free(indio_dev->buffer);
-}
-
-static const struct iio_buffer_setup_ops adis16201_ring_setup_ops = {
- .preenable = &iio_sw_buffer_preenable,
- .postenable = &iio_triggered_buffer_postenable,
- .predisable = &iio_triggered_buffer_predisable,
-};
-
-int adis16201_configure_ring(struct iio_dev *indio_dev)
-{
- int ret = 0;
- struct iio_buffer *ring;
-
- ring = iio_sw_rb_allocate(indio_dev);
- if (!ring) {
- ret = -ENOMEM;
- return ret;
- }
- indio_dev->buffer = ring;
- ring->scan_timestamp = true;
- indio_dev->setup_ops = &adis16201_ring_setup_ops;
-
- indio_dev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time,
- &adis16201_trigger_handler,
- IRQF_ONESHOT,
- indio_dev,
- "adis16201_consumer%d",
- indio_dev->id);
- if (indio_dev->pollfunc == NULL) {
- ret = -ENOMEM;
- goto error_iio_sw_rb_free;
- }
-
- indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
- return 0;
-error_iio_sw_rb_free:
- iio_sw_rb_free(indio_dev->buffer);
- return ret;
-}
+++ /dev/null
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/spi/spi.h>
-#include <linux/export.h>
-
-#include <linux/iio/iio.h>
-#include <linux/iio/trigger.h>
-#include "adis16201.h"
-
-/**
- * adis16201_data_rdy_trigger_set_state() set datardy interrupt state
- **/
-static int adis16201_data_rdy_trigger_set_state(struct iio_trigger *trig,
- bool state)
-{
- struct iio_dev *indio_dev = trig->private_data;
-
- dev_dbg(&indio_dev->dev, "%s (%d)\n", __func__, state);
- return adis16201_set_irq(indio_dev, state);
-}
-
-static const struct iio_trigger_ops adis16201_trigger_ops = {
- .owner = THIS_MODULE,
- .set_trigger_state = &adis16201_data_rdy_trigger_set_state,
-};
-
-int adis16201_probe_trigger(struct iio_dev *indio_dev)
-{
- int ret;
- struct adis16201_state *st = iio_priv(indio_dev);
-
- st->trig = iio_trigger_alloc("adis16201-dev%d", indio_dev->id);
- if (st->trig == NULL) {
- ret = -ENOMEM;
- goto error_ret;
- }
- ret = request_irq(st->us->irq,
- &iio_trigger_generic_data_rdy_poll,
- IRQF_TRIGGER_RISING,
- "adis16201",
- st->trig);
- if (ret)
- goto error_free_trig;
- st->trig->dev.parent = &st->us->dev;
- st->trig->ops = &adis16201_trigger_ops;
- st->trig->private_data = indio_dev;
- ret = iio_trigger_register(st->trig);
-
- /* select default trigger */
- indio_dev->trig = st->trig;
- if (ret)
- goto error_free_irq;
-
- return 0;
-
-error_free_irq:
- free_irq(st->us->irq, st->trig);
-error_free_trig:
- iio_trigger_free(st->trig);
-error_ret:
- return ret;
-}
-
-void adis16201_remove_trigger(struct iio_dev *indio_dev)
-{
- struct adis16201_state *state = iio_priv(indio_dev);
-
- iio_trigger_unregister(state->trig);
- free_irq(state->us->irq, state->trig);
- iio_trigger_free(state->trig);
-}
#define ADIS16203_STARTUP_DELAY 220 /* ms */
-#define ADIS16203_READ_REG(a) a
-#define ADIS16203_WRITE_REG(a) ((a) | 0x80)
-
#define ADIS16203_FLASH_CNT 0x00 /* Flash memory write count */
#define ADIS16203_SUPPLY_OUT 0x02 /* Output, power supply */
#define ADIS16203_AUX_ADC 0x08 /* Output, auxiliary ADC input */
#define ADIS16203_DIAG_STAT 0x3C /* Diagnostics, system status register */
#define ADIS16203_GLOB_CMD 0x3E /* Operation, system command register */
-#define ADIS16203_OUTPUTS 5
-
/* MSC_CTRL */
#define ADIS16203_MSC_CTRL_PWRUP_SELF_TEST (1 << 10) /* Self-test at power-on: 1 = disabled, 0 = enabled */
#define ADIS16203_MSC_CTRL_REVERSE_ROT_EN (1 << 9) /* Reverses rotation of both inclination outputs */
/* DIAG_STAT */
#define ADIS16203_DIAG_STAT_ALARM2 (1<<9) /* Alarm 2 status: 1 = alarm active, 0 = alarm inactive */
#define ADIS16203_DIAG_STAT_ALARM1 (1<<8) /* Alarm 1 status: 1 = alarm active, 0 = alarm inactive */
-#define ADIS16203_DIAG_STAT_SELFTEST_FAIL (1<<5) /* Self-test diagnostic error flag */
-#define ADIS16203_DIAG_STAT_SPI_FAIL (1<<3) /* SPI communications failure */
-#define ADIS16203_DIAG_STAT_FLASH_UPT (1<<2) /* Flash update failure */
-#define ADIS16203_DIAG_STAT_POWER_HIGH (1<<1) /* Power supply above 3.625 V */
-#define ADIS16203_DIAG_STAT_POWER_LOW (1<<0) /* Power supply below 3.15 V */
+#define ADIS16203_DIAG_STAT_SELFTEST_FAIL_BIT 5 /* Self-test diagnostic error flag */
+#define ADIS16203_DIAG_STAT_SPI_FAIL_BIT 3 /* SPI communications failure */
+#define ADIS16203_DIAG_STAT_FLASH_UPT_BIT 2 /* Flash update failure */
+#define ADIS16203_DIAG_STAT_POWER_HIGH_BIT 1 /* Power supply above 3.625 V */
+#define ADIS16203_DIAG_STAT_POWER_LOW_BIT 0 /* Power supply below 3.15 V */
/* GLOB_CMD */
#define ADIS16203_GLOB_CMD_SW_RESET (1<<7)
#define ADIS16203_GLOB_CMD_CLEAR_STAT (1<<4)
#define ADIS16203_GLOB_CMD_FACTORY_CAL (1<<1)
-#define ADIS16203_MAX_TX 12
-#define ADIS16203_MAX_RX 10
-
#define ADIS16203_ERROR_ACTIVE (1<<14)
-/**
- * struct adis16203_state - device instance specific data
- * @us: actual spi_device
- * @trig: data ready trigger registered with iio
- * @tx: transmit buffer
- * @rx: receive buffer
- * @buf_lock: mutex to protect tx and rx
- **/
-struct adis16203_state {
- struct spi_device *us;
- struct iio_trigger *trig;
- struct mutex buf_lock;
- u8 tx[ADIS16203_MAX_TX] ____cacheline_aligned;
- u8 rx[ADIS16203_MAX_RX];
-};
-
-int adis16203_set_irq(struct iio_dev *indio_dev, bool enable);
-
enum adis16203_scan {
+ ADIS16203_SCAN_INCLI_X,
+ ADIS16203_SCAN_INCLI_Y,
ADIS16203_SCAN_SUPPLY,
ADIS16203_SCAN_AUX_ADC,
ADIS16203_SCAN_TEMP,
- ADIS16203_SCAN_INCLI_X,
- ADIS16203_SCAN_INCLI_Y,
};
-#ifdef CONFIG_IIO_BUFFER
-void adis16203_remove_trigger(struct iio_dev *indio_dev);
-int adis16203_probe_trigger(struct iio_dev *indio_dev);
-
-ssize_t adis16203_read_data_from_ring(struct device *dev,
- struct device_attribute *attr,
- char *buf);
-
-int adis16203_configure_ring(struct iio_dev *indio_dev);
-void adis16203_unconfigure_ring(struct iio_dev *indio_dev);
-
-#else /* CONFIG_IIO_BUFFER */
-
-static inline void adis16203_remove_trigger(struct iio_dev *indio_dev)
-{
-}
-
-static inline int adis16203_probe_trigger(struct iio_dev *indio_dev)
-{
- return 0;
-}
-
-static inline ssize_t
-adis16203_read_data_from_ring(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return 0;
-}
-
-static int adis16203_configure_ring(struct iio_dev *indio_dev)
-{
- return 0;
-}
-
-static inline void adis16203_unconfigure_ring(struct iio_dev *indio_dev)
-{
-}
-
-#endif /* CONFIG_IIO_BUFFER */
#endif /* SPI_ADIS16203_H_ */
/*
* ADIS16203 Programmable Digital Vibration Sensor driver
*
- * Copyright 2010 Analog Devices Inc.
+ * Copyright 2030 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/iio/buffer.h>
+#include <linux/iio/imu/adis.h>
#include "adis16203.h"
-/**
- * adis16203_spi_write_reg_8() - write single byte to a register
- * @indio_dev: iio device associated with child of actual device
- * @reg_address: the address of the register to be written
- * @val: the value to write
- **/
-static int adis16203_spi_write_reg_8(struct iio_dev *indio_dev,
- u8 reg_address,
- u8 val)
-{
- int ret;
- struct adis16203_state *st = iio_priv(indio_dev);
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = ADIS16203_WRITE_REG(reg_address);
- st->tx[1] = val;
-
- ret = spi_write(st->us, st->tx, 2);
- mutex_unlock(&st->buf_lock);
-
- return ret;
-}
-
-/**
- * adis16203_spi_write_reg_16() - write 2 bytes to a pair of registers
- * @indio_dev: iio device associated with child of actual device
- * @reg_address: the address of the lower of the two registers. Second register
- * is assumed to have address one greater.
- * @val: value to be written
- **/
-static int adis16203_spi_write_reg_16(struct iio_dev *indio_dev,
- u8 lower_reg_address,
- u16 value)
-{
- int ret;
- struct spi_message msg;
- struct adis16203_state *st = iio_priv(indio_dev);
- struct spi_transfer xfers[] = {
- {
- .tx_buf = st->tx,
- .bits_per_word = 8,
- .len = 2,
- .cs_change = 1,
- }, {
- .tx_buf = st->tx + 2,
- .bits_per_word = 8,
- .len = 2,
- },
- };
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = ADIS16203_WRITE_REG(lower_reg_address);
- st->tx[1] = value & 0xFF;
- st->tx[2] = ADIS16203_WRITE_REG(lower_reg_address + 1);
- st->tx[3] = (value >> 8) & 0xFF;
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfers[0], &msg);
- spi_message_add_tail(&xfers[1], &msg);
- ret = spi_sync(st->us, &msg);
- mutex_unlock(&st->buf_lock);
-
- return ret;
-}
-
-/**
- * adis16203_spi_read_reg_16() - read 2 bytes from a 16-bit register
- * @indio_dev: iio device associated with child of actual device
- * @reg_address: the address of the lower of the two registers. Second register
- * is assumed to have address one greater.
- * @val: somewhere to pass back the value read
- **/
-static int adis16203_spi_read_reg_16(struct iio_dev *indio_dev,
- u8 lower_reg_address,
- u16 *val)
-{
- struct spi_message msg;
- struct adis16203_state *st = iio_priv(indio_dev);
- int ret;
- struct spi_transfer xfers[] = {
- {
- .tx_buf = st->tx,
- .bits_per_word = 8,
- .len = 2,
- .cs_change = 1,
- .delay_usecs = 20,
- }, {
- .rx_buf = st->rx,
- .bits_per_word = 8,
- .len = 2,
- .delay_usecs = 20,
- },
- };
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = ADIS16203_READ_REG(lower_reg_address);
- st->tx[1] = 0;
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfers[0], &msg);
- spi_message_add_tail(&xfers[1], &msg);
- ret = spi_sync(st->us, &msg);
- if (ret) {
- dev_err(&st->us->dev, "problem when reading 16 bit register 0x%02X",
- lower_reg_address);
- goto error_ret;
- }
- *val = (st->rx[0] << 8) | st->rx[1];
-
-error_ret:
- mutex_unlock(&st->buf_lock);
- return ret;
-}
-
-static int adis16203_check_status(struct iio_dev *indio_dev)
-{
- u16 status;
- int ret;
-
- ret = adis16203_spi_read_reg_16(indio_dev,
- ADIS16203_DIAG_STAT,
- &status);
- if (ret < 0) {
- dev_err(&indio_dev->dev, "Reading status failed\n");
- goto error_ret;
- }
- ret = status & 0x1F;
-
- if (status & ADIS16203_DIAG_STAT_SELFTEST_FAIL)
- dev_err(&indio_dev->dev, "Self test failure\n");
- if (status & ADIS16203_DIAG_STAT_SPI_FAIL)
- dev_err(&indio_dev->dev, "SPI failure\n");
- if (status & ADIS16203_DIAG_STAT_FLASH_UPT)
- dev_err(&indio_dev->dev, "Flash update failed\n");
- if (status & ADIS16203_DIAG_STAT_POWER_HIGH)
- dev_err(&indio_dev->dev, "Power supply above 3.625V\n");
- if (status & ADIS16203_DIAG_STAT_POWER_LOW)
- dev_err(&indio_dev->dev, "Power supply below 3.15V\n");
-
-error_ret:
- return ret;
-}
-
-static int adis16203_reset(struct iio_dev *indio_dev)
-{
- int ret;
- ret = adis16203_spi_write_reg_8(indio_dev,
- ADIS16203_GLOB_CMD,
- ADIS16203_GLOB_CMD_SW_RESET);
- if (ret)
- dev_err(&indio_dev->dev, "problem resetting device");
-
- return ret;
-}
-
-int adis16203_set_irq(struct iio_dev *indio_dev, bool enable)
-{
- int ret = 0;
- u16 msc;
-
- ret = adis16203_spi_read_reg_16(indio_dev, ADIS16203_MSC_CTRL, &msc);
- if (ret)
- goto error_ret;
-
- msc |= ADIS16203_MSC_CTRL_ACTIVE_HIGH;
- msc &= ~ADIS16203_MSC_CTRL_DATA_RDY_DIO1;
- if (enable)
- msc |= ADIS16203_MSC_CTRL_DATA_RDY_EN;
- else
- msc &= ~ADIS16203_MSC_CTRL_DATA_RDY_EN;
+#define DRIVER_NAME "adis16203"
- ret = adis16203_spi_write_reg_16(indio_dev, ADIS16203_MSC_CTRL, msc);
-
-error_ret:
- return ret;
-}
-
-static int adis16203_self_test(struct iio_dev *indio_dev)
-{
- int ret;
- ret = adis16203_spi_write_reg_16(indio_dev,
- ADIS16203_MSC_CTRL,
- ADIS16203_MSC_CTRL_SELF_TEST_EN);
- if (ret) {
- dev_err(&indio_dev->dev, "problem starting self test");
- goto err_ret;
- }
-
- adis16203_check_status(indio_dev);
-
-err_ret:
- return ret;
-}
-
-static int adis16203_initial_setup(struct iio_dev *indio_dev)
-{
- int ret;
-
- /* Disable IRQ */
- ret = adis16203_set_irq(indio_dev, false);
- if (ret) {
- dev_err(&indio_dev->dev, "disable irq failed");
- goto err_ret;
- }
-
- /* Do self test */
- ret = adis16203_self_test(indio_dev);
- if (ret) {
- dev_err(&indio_dev->dev, "self test failure");
- goto err_ret;
- }
-
- /* Read status register to check the result */
- ret = adis16203_check_status(indio_dev);
- if (ret) {
- adis16203_reset(indio_dev);
- dev_err(&indio_dev->dev, "device not playing ball -> reset");
- msleep(ADIS16203_STARTUP_DELAY);
- ret = adis16203_check_status(indio_dev);
- if (ret) {
- dev_err(&indio_dev->dev, "giving up");
- goto err_ret;
- }
- }
-
-err_ret:
- return ret;
-}
-
-enum adis16203_chan {
- in_supply,
- in_aux,
- incli_x,
- incli_y,
- temp,
-};
-
-static u8 adis16203_addresses[5][2] = {
- [in_supply] = { ADIS16203_SUPPLY_OUT },
- [in_aux] = { ADIS16203_AUX_ADC },
- [incli_x] = { ADIS16203_XINCL_OUT, ADIS16203_INCL_NULL},
- [incli_y] = { ADIS16203_YINCL_OUT },
- [temp] = { ADIS16203_TEMP_OUT }
+static const u8 adis16203_addresses[] = {
+ [ADIS16203_SCAN_INCLI_X] = ADIS16203_INCL_NULL,
};
static int adis16203_write_raw(struct iio_dev *indio_dev,
int val2,
long mask)
{
+ struct adis *st = iio_priv(indio_dev);
/* currently only one writable parameter which keeps this simple */
- u8 addr = adis16203_addresses[chan->address][1];
- return adis16203_spi_write_reg_16(indio_dev, addr, val & 0x3FFF);
+ u8 addr = adis16203_addresses[chan->scan_index];
+ return adis_write_reg_16(st, addr, val & 0x3FFF);
}
static int adis16203_read_raw(struct iio_dev *indio_dev,
int *val, int *val2,
long mask)
{
+ struct adis *st = iio_priv(indio_dev);
int ret;
int bits;
u8 addr;
s16 val16;
switch (mask) {
case IIO_CHAN_INFO_RAW:
- mutex_lock(&indio_dev->mlock);
- addr = adis16203_addresses[chan->address][0];
- ret = adis16203_spi_read_reg_16(indio_dev, addr, &val16);
- if (ret) {
- mutex_unlock(&indio_dev->mlock);
- return ret;
- }
-
- if (val16 & ADIS16203_ERROR_ACTIVE) {
- ret = adis16203_check_status(indio_dev);
- if (ret) {
- mutex_unlock(&indio_dev->mlock);
- return ret;
- }
- }
- val16 = val16 & ((1 << chan->scan_type.realbits) - 1);
- if (chan->scan_type.sign == 's')
- val16 = (s16)(val16 <<
- (16 - chan->scan_type.realbits)) >>
- (16 - chan->scan_type.realbits);
- *val = val16;
- mutex_unlock(&indio_dev->mlock);
- return IIO_VAL_INT;
+ return adis_single_conversion(indio_dev, chan,
+ ADIS16203_ERROR_ACTIVE, val);
case IIO_CHAN_INFO_SCALE:
switch (chan->type) {
case IIO_VOLTAGE:
case IIO_CHAN_INFO_CALIBBIAS:
bits = 14;
mutex_lock(&indio_dev->mlock);
- addr = adis16203_addresses[chan->address][1];
- ret = adis16203_spi_read_reg_16(indio_dev, addr, &val16);
+ addr = adis16203_addresses[chan->scan_index];
+ ret = adis_read_reg_16(st, addr, &val16);
if (ret) {
mutex_unlock(&indio_dev->mlock);
return ret;
}
static const struct iio_chan_spec adis16203_channels[] = {
- {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 0,
- .extend_name = "supply",
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
- .address = in_supply,
- .scan_index = ADIS16203_SCAN_SUPPLY,
- .scan_type = {
- .sign = 'u',
- .realbits = 12,
- .storagebits = 16,
- },
- }, {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 1,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
- .address = in_aux,
- .scan_index = ADIS16203_SCAN_AUX_ADC,
- .scan_type = {
- .sign = 'u',
- .realbits = 12,
- .storagebits = 16,
- },
- }, {
- .type = IIO_INCLI,
- .modified = 1,
- .channel2 = IIO_MOD_X,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SHARED_BIT |
- IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT,
- .address = incli_x,
- .scan_index = ADIS16203_SCAN_INCLI_X,
- .scan_type = {
- .sign = 's',
- .realbits = 14,
- .storagebits = 16,
- },
- }, { /* Fixme: Not what it appears to be - see data sheet */
- .type = IIO_INCLI,
- .modified = 1,
- .channel2 = IIO_MOD_Y,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SHARED_BIT,
- .address = incli_y,
- .scan_index = ADIS16203_SCAN_INCLI_Y,
- .scan_type = {
- .sign = 's',
- .realbits = 14,
- .storagebits = 16,
- },
- }, {
- .type = IIO_TEMP,
- .indexed = 1,
- .channel = 0,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SEPARATE_BIT |
- IIO_CHAN_INFO_OFFSET_SEPARATE_BIT,
- .address = temp,
- .scan_index = ADIS16203_SCAN_TEMP,
- .scan_type = {
- .sign = 'u',
- .realbits = 12,
- .storagebits = 16,
- },
- },
+ ADIS_SUPPLY_CHAN(ADIS16203_SUPPLY_OUT, ADIS16203_SCAN_SUPPLY, 12),
+ ADIS_AUX_ADC_CHAN(ADIS16203_AUX_ADC, ADIS16203_SCAN_AUX_ADC, 12),
+ ADIS_INCLI_CHAN(X, ADIS16203_XINCL_OUT, ADIS16203_SCAN_INCLI_X,
+ IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT, 14),
+ /* Fixme: Not what it appears to be - see data sheet */
+ ADIS_INCLI_CHAN(Y, ADIS16203_YINCL_OUT, ADIS16203_SCAN_INCLI_Y, 0, 14),
+ ADIS_TEMP_CHAN(ADIS16203_TEMP_OUT, ADIS16203_SCAN_TEMP, 12),
IIO_CHAN_SOFT_TIMESTAMP(5),
};
static const struct iio_info adis16203_info = {
.read_raw = &adis16203_read_raw,
.write_raw = &adis16203_write_raw,
+ .update_scan_mode = adis_update_scan_mode,
.driver_module = THIS_MODULE,
};
+static const char * const adis16203_status_error_msgs[] = {
+ [ADIS16203_DIAG_STAT_SELFTEST_FAIL_BIT] = "Self test failure",
+ [ADIS16203_DIAG_STAT_SPI_FAIL_BIT] = "SPI failure",
+ [ADIS16203_DIAG_STAT_FLASH_UPT_BIT] = "Flash update failed",
+ [ADIS16203_DIAG_STAT_POWER_HIGH_BIT] = "Power supply above 3.625V",
+ [ADIS16203_DIAG_STAT_POWER_LOW_BIT] = "Power supply below 3.15V",
+};
+
+static const struct adis_data adis16203_data = {
+ .read_delay = 20,
+ .msc_ctrl_reg = ADIS16203_MSC_CTRL,
+ .glob_cmd_reg = ADIS16203_GLOB_CMD,
+ .diag_stat_reg = ADIS16203_DIAG_STAT,
+
+ .self_test_mask = ADIS16203_MSC_CTRL_SELF_TEST_EN,
+ .startup_delay = ADIS16203_STARTUP_DELAY,
+
+ .status_error_msgs = adis16203_status_error_msgs,
+ .status_error_mask = BIT(ADIS16203_DIAG_STAT_SELFTEST_FAIL_BIT) |
+ BIT(ADIS16203_DIAG_STAT_SPI_FAIL_BIT) |
+ BIT(ADIS16203_DIAG_STAT_FLASH_UPT_BIT) |
+ BIT(ADIS16203_DIAG_STAT_POWER_HIGH_BIT) |
+ BIT(ADIS16203_DIAG_STAT_POWER_LOW_BIT),
+};
+
static int __devinit adis16203_probe(struct spi_device *spi)
{
int ret;
struct iio_dev *indio_dev;
- struct adis16203_state *st;
+ struct adis *st;
/* setup the industrialio driver allocated elements */
indio_dev = iio_device_alloc(sizeof(*st));
st = iio_priv(indio_dev);
/* this is only used for removal purposes */
spi_set_drvdata(spi, indio_dev);
- st->us = spi;
- mutex_init(&st->buf_lock);
indio_dev->name = spi->dev.driver->name;
indio_dev->dev.parent = &spi->dev;
indio_dev->info = &adis16203_info;
indio_dev->modes = INDIO_DIRECT_MODE;
- ret = adis16203_configure_ring(indio_dev);
+ ret = adis_init(st, indio_dev, spi, &adis16203_data);
if (ret)
goto error_free_dev;
- ret = iio_buffer_register(indio_dev,
- adis16203_channels,
- ARRAY_SIZE(adis16203_channels));
- if (ret) {
- printk(KERN_ERR "failed to initialize the ring\n");
- goto error_unreg_ring_funcs;
- }
-
- if (spi->irq) {
- ret = adis16203_probe_trigger(indio_dev);
- if (ret)
- goto error_uninitialize_ring;
- }
+ ret = adis_setup_buffer_and_trigger(st, indio_dev, NULL);
+ if (ret)
+ goto error_free_dev;
/* Get the device into a sane initial state */
- ret = adis16203_initial_setup(indio_dev);
+ ret = adis_initial_startup(st);
if (ret)
- goto error_remove_trigger;
+ goto error_cleanup_buffer_trigger;
ret = iio_device_register(indio_dev);
if (ret)
- goto error_remove_trigger;
+ goto error_cleanup_buffer_trigger;
return 0;
-error_remove_trigger:
- adis16203_remove_trigger(indio_dev);
-error_uninitialize_ring:
- iio_buffer_unregister(indio_dev);
-error_unreg_ring_funcs:
- adis16203_unconfigure_ring(indio_dev);
+error_cleanup_buffer_trigger:
+ adis_cleanup_buffer_and_trigger(st, indio_dev);
error_free_dev:
iio_device_free(indio_dev);
error_ret:
static int __devexit adis16203_remove(struct spi_device *spi)
{
struct iio_dev *indio_dev = spi_get_drvdata(spi);
+ struct adis *st = iio_priv(indio_dev);
iio_device_unregister(indio_dev);
- adis16203_remove_trigger(indio_dev);
- iio_buffer_unregister(indio_dev);
- adis16203_unconfigure_ring(indio_dev);
+ adis_cleanup_buffer_and_trigger(st, indio_dev);
iio_device_free(indio_dev);
return 0;
+++ /dev/null
-#include <linux/export.h>
-#include <linux/interrupt.h>
-#include <linux/mutex.h>
-#include <linux/kernel.h>
-#include <linux/spi/spi.h>
-#include <linux/slab.h>
-
-#include <linux/iio/iio.h>
-#include "../ring_sw.h"
-#include <linux/iio/trigger_consumer.h>
-#include "adis16203.h"
-
-/**
- * adis16203_read_ring_data() read data registers which will be placed into ring
- * @indio_dev: the IIO device
- * @rx: somewhere to pass back the value read
- **/
-static int adis16203_read_ring_data(struct iio_dev *indio_dev, u8 *rx)
-{
- struct spi_message msg;
- struct adis16203_state *st = iio_priv(indio_dev);
- struct spi_transfer xfers[ADIS16203_OUTPUTS + 1];
- int ret;
- int i;
-
- mutex_lock(&st->buf_lock);
-
- spi_message_init(&msg);
-
- memset(xfers, 0, sizeof(xfers));
- for (i = 0; i <= ADIS16203_OUTPUTS; i++) {
- xfers[i].bits_per_word = 8;
- xfers[i].cs_change = 1;
- xfers[i].len = 2;
- xfers[i].delay_usecs = 20;
- xfers[i].tx_buf = st->tx + 2 * i;
- if (i < 1) /* SUPPLY_OUT: 0x02, AUX_ADC: 0x08 */
- st->tx[2 * i] = ADIS16203_READ_REG(ADIS16203_SUPPLY_OUT + 2 * i);
- else
- st->tx[2 * i] = ADIS16203_READ_REG(ADIS16203_SUPPLY_OUT + 2 * i + 6);
- st->tx[2 * i + 1] = 0;
- if (i >= 1)
- xfers[i].rx_buf = rx + 2 * (i - 1);
- spi_message_add_tail(&xfers[i], &msg);
- }
-
- ret = spi_sync(st->us, &msg);
- if (ret)
- dev_err(&st->us->dev, "problem when burst reading");
-
- mutex_unlock(&st->buf_lock);
-
- return ret;
-}
-
-/* Whilst this makes a lot of calls to iio_sw_ring functions - it is to device
- * specific to be rolled into the core.
- */
-static irqreturn_t adis16203_trigger_handler(int irq, void *p)
-{
- struct iio_poll_func *pf = p;
- struct iio_dev *indio_dev = pf->indio_dev;
- struct adis16203_state *st = iio_priv(indio_dev);
-
- int i = 0;
- s16 *data;
-
- data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
- if (data == NULL) {
- dev_err(&st->us->dev, "memory alloc failed in ring bh");
- goto done;
- }
-
- if (!bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength) &&
- adis16203_read_ring_data(indio_dev, st->rx) >= 0)
- for (; i < bitmap_weight(indio_dev->active_scan_mask,
- indio_dev->masklength); i++)
- data[i] = be16_to_cpup((__be16 *)&(st->rx[i*2]));
-
- /* Guaranteed to be aligned with 8 byte boundary */
- if (indio_dev->scan_timestamp)
- *((s64 *)(data + ((i + 3)/4)*4)) = pf->timestamp;
-
- iio_push_to_buffers(indio_dev, (u8 *)data);
-
- kfree(data);
-done:
- iio_trigger_notify_done(indio_dev->trig);
-
- return IRQ_HANDLED;
-}
-
-void adis16203_unconfigure_ring(struct iio_dev *indio_dev)
-{
- iio_dealloc_pollfunc(indio_dev->pollfunc);
- iio_sw_rb_free(indio_dev->buffer);
-}
-
-static const struct iio_buffer_setup_ops adis16203_ring_setup_ops = {
- .preenable = &iio_sw_buffer_preenable,
- .postenable = &iio_triggered_buffer_postenable,
- .predisable = &iio_triggered_buffer_predisable,
-};
-
-int adis16203_configure_ring(struct iio_dev *indio_dev)
-{
- int ret = 0;
- struct iio_buffer *ring;
-
- ring = iio_sw_rb_allocate(indio_dev);
- if (!ring) {
- ret = -ENOMEM;
- return ret;
- }
- indio_dev->buffer = ring;
- ring->scan_timestamp = true;
- indio_dev->setup_ops = &adis16203_ring_setup_ops;
-
- indio_dev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time,
- &adis16203_trigger_handler,
- IRQF_ONESHOT,
- indio_dev,
- "adis16203_consumer%d",
- indio_dev->id);
- if (indio_dev->pollfunc == NULL) {
- ret = -ENOMEM;
- goto error_iio_sw_rb_free;
- }
-
- indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
- return 0;
-
-error_iio_sw_rb_free:
- iio_sw_rb_free(indio_dev->buffer);
- return ret;
-}
+++ /dev/null
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/spi/spi.h>
-#include <linux/export.h>
-
-#include <linux/iio/iio.h>
-#include <linux/iio/trigger.h>
-#include "adis16203.h"
-
-/**
- * adis16203_data_rdy_trigger_set_state() set datardy interrupt state
- **/
-static int adis16203_data_rdy_trigger_set_state(struct iio_trigger *trig,
- bool state)
-{
- struct iio_dev *indio_dev = trig->private_data;
-
- dev_dbg(&indio_dev->dev, "%s (%d)\n", __func__, state);
- return adis16203_set_irq(indio_dev, state);
-}
-
-static const struct iio_trigger_ops adis16203_trigger_ops = {
- .owner = THIS_MODULE,
- .set_trigger_state = &adis16203_data_rdy_trigger_set_state,
-};
-
-int adis16203_probe_trigger(struct iio_dev *indio_dev)
-{
- int ret;
- struct adis16203_state *st = iio_priv(indio_dev);
-
- st->trig = iio_trigger_alloc("adis16203-dev%d", indio_dev->id);
- if (st->trig == NULL) {
- ret = -ENOMEM;
- goto error_ret;
- }
-
- ret = request_irq(st->us->irq,
- &iio_trigger_generic_data_rdy_poll,
- IRQF_TRIGGER_RISING,
- "adis16203",
- st->trig);
- if (ret)
- goto error_free_trig;
-
- st->trig->dev.parent = &st->us->dev;
- st->trig->ops = &adis16203_trigger_ops;
- st->trig->private_data = indio_dev;
- ret = iio_trigger_register(st->trig);
-
- /* select default trigger */
- indio_dev->trig = st->trig;
- if (ret)
- goto error_free_irq;
-
- return 0;
-
-error_free_irq:
- free_irq(st->us->irq, st->trig);
-error_free_trig:
- iio_trigger_free(st->trig);
-error_ret:
- return ret;
-}
-
-void adis16203_remove_trigger(struct iio_dev *indio_dev)
-{
- struct adis16203_state *st = iio_priv(indio_dev);
-
- iio_trigger_unregister(st->trig);
- free_irq(st->us->irq, st->trig);
- iio_trigger_free(st->trig);
-}
#define ADIS16204_STARTUP_DELAY 220 /* ms */
-#define ADIS16204_READ_REG(a) a
-#define ADIS16204_WRITE_REG(a) ((a) | 0x80)
-
#define ADIS16204_FLASH_CNT 0x00 /* Flash memory write count */
#define ADIS16204_SUPPLY_OUT 0x02 /* Output, power supply */
#define ADIS16204_XACCL_OUT 0x04 /* Output, x-axis accelerometer */
#define ADIS16204_DIAG_STAT 0x3C /* Diagnostics, system status register */
#define ADIS16204_GLOB_CMD 0x3E /* Operation, system command register */
-#define ADIS16204_OUTPUTS 5
-
/* MSC_CTRL */
#define ADIS16204_MSC_CTRL_PWRUP_SELF_TEST (1 << 10) /* Self-test at power-on: 1 = disabled, 0 = enabled */
#define ADIS16204_MSC_CTRL_SELF_TEST_EN (1 << 8) /* Self-test enable */
/* DIAG_STAT */
#define ADIS16204_DIAG_STAT_ALARM2 (1<<9) /* Alarm 2 status: 1 = alarm active, 0 = alarm inactive */
#define ADIS16204_DIAG_STAT_ALARM1 (1<<8) /* Alarm 1 status: 1 = alarm active, 0 = alarm inactive */
-#define ADIS16204_DIAG_STAT_SELFTEST_FAIL (1<<5) /* Self-test diagnostic error flag: 1 = error condition,
+#define ADIS16204_DIAG_STAT_SELFTEST_FAIL_BIT 5 /* Self-test diagnostic error flag: 1 = error condition,
0 = normal operation */
-#define ADIS16204_DIAG_STAT_SPI_FAIL (1<<3) /* SPI communications failure */
-#define ADIS16204_DIAG_STAT_FLASH_UPT (1<<2) /* Flash update failure */
-#define ADIS16204_DIAG_STAT_POWER_HIGH (1<<1) /* Power supply above 3.625 V */
-#define ADIS16204_DIAG_STAT_POWER_LOW (1<<0) /* Power supply below 2.975 V */
+#define ADIS16204_DIAG_STAT_SPI_FAIL_BIT 3 /* SPI communications failure */
+#define ADIS16204_DIAG_STAT_FLASH_UPT_BIT 2 /* Flash update failure */
+#define ADIS16204_DIAG_STAT_POWER_HIGH_BIT 1 /* Power supply above 3.625 V */
+#define ADIS16204_DIAG_STAT_POWER_LOW_BIT 0 /* Power supply below 2.975 V */
/* GLOB_CMD */
#define ADIS16204_GLOB_CMD_SW_RESET (1<<7)
#define ADIS16204_GLOB_CMD_CLEAR_STAT (1<<4)
#define ADIS16204_GLOB_CMD_FACTORY_CAL (1<<1)
-#define ADIS16204_MAX_TX 24
-#define ADIS16204_MAX_RX 24
-
#define ADIS16204_ERROR_ACTIVE (1<<14)
-/**
- * struct adis16204_state - device instance specific data
- * @us: actual spi_device
- * @trig: data ready trigger registered with iio
- * @tx: transmit buffer
- * @rx: receive buffer
- * @buf_lock: mutex to protect tx and rx
- **/
-struct adis16204_state {
- struct spi_device *us;
- struct iio_trigger *trig;
- struct mutex buf_lock;
- u8 tx[ADIS16204_MAX_TX] ____cacheline_aligned;
- u8 rx[ADIS16204_MAX_RX];
-};
-
-int adis16204_set_irq(struct iio_dev *indio_dev, bool enable);
-
enum adis16204_scan {
- ADIS16204_SCAN_SUPPLY,
ADIS16204_SCAN_ACC_X,
ADIS16204_SCAN_ACC_Y,
+ ADIS16204_SCAN_ACC_XY,
+ ADIS16204_SCAN_SUPPLY,
ADIS16204_SCAN_AUX_ADC,
ADIS16204_SCAN_TEMP,
};
-#ifdef CONFIG_IIO_BUFFER
-void adis16204_remove_trigger(struct iio_dev *indio_dev);
-int adis16204_probe_trigger(struct iio_dev *indio_dev);
-
-ssize_t adis16204_read_data_from_ring(struct device *dev,
- struct device_attribute *attr,
- char *buf);
-
-int adis16204_configure_ring(struct iio_dev *indio_dev);
-void adis16204_unconfigure_ring(struct iio_dev *indio_dev);
-
-#else /* CONFIG_IIO_BUFFER */
-
-static inline void adis16204_remove_trigger(struct iio_dev *indio_dev)
-{
-}
-
-static inline int adis16204_probe_trigger(struct iio_dev *indio_dev)
-{
- return 0;
-}
-
-static inline ssize_t
-adis16204_read_data_from_ring(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return 0;
-}
-
-static int adis16204_configure_ring(struct iio_dev *indio_dev)
-{
- return 0;
-}
-
-static inline void adis16204_unconfigure_ring(struct iio_dev *indio_dev)
-{
-}
-
-#endif /* CONFIG_IIO_BUFFER */
#endif /* SPI_ADIS16204_H_ */
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/iio/buffer.h>
+#include <linux/iio/imu/adis.h>
#include "adis16204.h"
-/**
- * adis16204_spi_write_reg_8() - write single byte to a register
- * @dev: device associated with child of actual device (iio_dev or iio_trig)
- * @reg_address: the address of the register to be written
- * @val: the value to write
- **/
-static int adis16204_spi_write_reg_8(struct iio_dev *indio_dev,
- u8 reg_address,
- u8 val)
-{
- int ret;
- struct adis16204_state *st = iio_priv(indio_dev);
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = ADIS16204_WRITE_REG(reg_address);
- st->tx[1] = val;
-
- ret = spi_write(st->us, st->tx, 2);
- mutex_unlock(&st->buf_lock);
-
- return ret;
-}
-
-/**
- * adis16204_spi_write_reg_16() - write 2 bytes to a pair of registers
- * @indio_dev: iio device associated with child of actual device
- * @reg_address: the address of the lower of the two registers. Second register
- * is assumed to have address one greater.
- * @val: value to be written
- **/
-static int adis16204_spi_write_reg_16(struct iio_dev *indio_dev,
- u8 lower_reg_address,
- u16 value)
-{
- int ret;
- struct spi_message msg;
- struct adis16204_state *st = iio_priv(indio_dev);
- struct spi_transfer xfers[] = {
- {
- .tx_buf = st->tx,
- .bits_per_word = 8,
- .len = 2,
- .cs_change = 1,
- }, {
- .tx_buf = st->tx + 2,
- .bits_per_word = 8,
- .len = 2,
- .cs_change = 1,
- },
- };
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = ADIS16204_WRITE_REG(lower_reg_address);
- st->tx[1] = value & 0xFF;
- st->tx[2] = ADIS16204_WRITE_REG(lower_reg_address + 1);
- st->tx[3] = (value >> 8) & 0xFF;
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfers[0], &msg);
- spi_message_add_tail(&xfers[1], &msg);
- ret = spi_sync(st->us, &msg);
- mutex_unlock(&st->buf_lock);
-
- return ret;
-}
-
-/**
- * adis16204_spi_read_reg_16() - read 2 bytes from a 16-bit register
- * @indio_dev: iio device associated with child of actual device
- * @reg_address: the address of the lower of the two registers. Second register
- * is assumed to have address one greater.
- * @val: somewhere to pass back the value read
- **/
-static int adis16204_spi_read_reg_16(struct iio_dev *indio_dev,
- u8 lower_reg_address,
- u16 *val)
-{
- struct spi_message msg;
- struct adis16204_state *st = iio_priv(indio_dev);
- int ret;
- struct spi_transfer xfers[] = {
- {
- .tx_buf = st->tx,
- .bits_per_word = 8,
- .len = 2,
- .cs_change = 1,
- .delay_usecs = 20,
- }, {
- .rx_buf = st->rx,
- .bits_per_word = 8,
- .len = 2,
- .delay_usecs = 20,
- },
- };
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = ADIS16204_READ_REG(lower_reg_address);
- st->tx[1] = 0;
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfers[0], &msg);
- spi_message_add_tail(&xfers[1], &msg);
- ret = spi_sync(st->us, &msg);
- if (ret) {
- dev_err(&st->us->dev, "problem when reading 16 bit register 0x%02X",
- lower_reg_address);
- goto error_ret;
- }
- *val = (st->rx[0] << 8) | st->rx[1];
-
-error_ret:
- mutex_unlock(&st->buf_lock);
- return ret;
-}
-
-static int adis16204_check_status(struct iio_dev *indio_dev)
-{
- u16 status;
- int ret;
-
- ret = adis16204_spi_read_reg_16(indio_dev,
- ADIS16204_DIAG_STAT, &status);
- if (ret < 0) {
- dev_err(&indio_dev->dev, "Reading status failed\n");
- goto error_ret;
- }
- ret = status & 0x1F;
-
- if (status & ADIS16204_DIAG_STAT_SELFTEST_FAIL)
- dev_err(&indio_dev->dev, "Self test failure\n");
- if (status & ADIS16204_DIAG_STAT_SPI_FAIL)
- dev_err(&indio_dev->dev, "SPI failure\n");
- if (status & ADIS16204_DIAG_STAT_FLASH_UPT)
- dev_err(&indio_dev->dev, "Flash update failed\n");
- if (status & ADIS16204_DIAG_STAT_POWER_HIGH)
- dev_err(&indio_dev->dev, "Power supply above 3.625V\n");
- if (status & ADIS16204_DIAG_STAT_POWER_LOW)
- dev_err(&indio_dev->dev, "Power supply below 2.975V\n");
-
-error_ret:
- return ret;
-}
-
-static int adis16204_reset(struct iio_dev *indio_dev)
-{
- int ret;
- ret = adis16204_spi_write_reg_8(indio_dev,
- ADIS16204_GLOB_CMD,
- ADIS16204_GLOB_CMD_SW_RESET);
- if (ret)
- dev_err(&indio_dev->dev, "problem resetting device");
-
- return ret;
-}
-
-int adis16204_set_irq(struct iio_dev *indio_dev, bool enable)
-{
- int ret = 0;
- u16 msc;
-
- ret = adis16204_spi_read_reg_16(indio_dev, ADIS16204_MSC_CTRL, &msc);
- if (ret)
- goto error_ret;
-
- msc |= ADIS16204_MSC_CTRL_ACTIVE_HIGH;
- msc &= ~ADIS16204_MSC_CTRL_DATA_RDY_DIO2;
- if (enable)
- msc |= ADIS16204_MSC_CTRL_DATA_RDY_EN;
- else
- msc &= ~ADIS16204_MSC_CTRL_DATA_RDY_EN;
-
- ret = adis16204_spi_write_reg_16(indio_dev, ADIS16204_MSC_CTRL, msc);
-
-error_ret:
- return ret;
-}
-
-static int adis16204_self_test(struct iio_dev *indio_dev)
-{
- int ret;
- ret = adis16204_spi_write_reg_16(indio_dev,
- ADIS16204_MSC_CTRL,
- ADIS16204_MSC_CTRL_SELF_TEST_EN);
- if (ret) {
- dev_err(&indio_dev->dev, "problem starting self test");
- goto err_ret;
- }
-
- adis16204_check_status(indio_dev);
-
-err_ret:
- return ret;
-}
-
-static int adis16204_initial_setup(struct iio_dev *indio_dev)
-{
- int ret;
-
- /* Disable IRQ */
- ret = adis16204_set_irq(indio_dev, false);
- if (ret) {
- dev_err(&indio_dev->dev, "disable irq failed");
- goto err_ret;
- }
-
- /* Do self test */
- ret = adis16204_self_test(indio_dev);
- if (ret) {
- dev_err(&indio_dev->dev, "self test failure");
- goto err_ret;
- }
-
- /* Read status register to check the result */
- ret = adis16204_check_status(indio_dev);
- if (ret) {
- adis16204_reset(indio_dev);
- dev_err(&indio_dev->dev, "device not playing ball -> reset");
- msleep(ADIS16204_STARTUP_DELAY);
- ret = adis16204_check_status(indio_dev);
- if (ret) {
- dev_err(&indio_dev->dev, "giving up");
- goto err_ret;
- }
- }
-
-err_ret:
- return ret;
-}
-
/* Unique to this driver currently */
-enum adis16204_channel {
- in_supply,
- in_aux,
- temp,
- accel_x,
- accel_y,
- accel_xy,
-};
-
-static u8 adis16204_addresses[6][3] = {
- [in_supply] = { ADIS16204_SUPPLY_OUT },
- [in_aux] = { ADIS16204_AUX_ADC },
- [temp] = { ADIS16204_TEMP_OUT },
- [accel_x] = { ADIS16204_XACCL_OUT, ADIS16204_XACCL_NULL,
- ADIS16204_X_PEAK_OUT },
- [accel_y] = { ADIS16204_XACCL_OUT, ADIS16204_YACCL_NULL,
- ADIS16204_Y_PEAK_OUT },
- [accel_xy] = { ADIS16204_XY_RSS_OUT, 0,
- ADIS16204_XY_PEAK_OUT },
+static const u8 adis16204_addresses[][2] = {
+ [ADIS16204_SCAN_ACC_X] = { ADIS16204_XACCL_NULL, ADIS16204_X_PEAK_OUT },
+ [ADIS16204_SCAN_ACC_Y] = { ADIS16204_YACCL_NULL, ADIS16204_Y_PEAK_OUT },
+ [ADIS16204_SCAN_ACC_XY] = { 0, ADIS16204_XY_PEAK_OUT },
};
static int adis16204_read_raw(struct iio_dev *indio_dev,
int *val, int *val2,
long mask)
{
+ struct adis *st = iio_priv(indio_dev);
int ret;
int bits;
u8 addr;
switch (mask) {
case IIO_CHAN_INFO_RAW:
- mutex_lock(&indio_dev->mlock);
- addr = adis16204_addresses[chan->address][0];
- ret = adis16204_spi_read_reg_16(indio_dev, addr, &val16);
- if (ret) {
- mutex_unlock(&indio_dev->mlock);
- return ret;
- }
-
- if (val16 & ADIS16204_ERROR_ACTIVE) {
- ret = adis16204_check_status(indio_dev);
- if (ret) {
- mutex_unlock(&indio_dev->mlock);
- return ret;
- }
- }
- val16 = val16 & ((1 << chan->scan_type.realbits) - 1);
- if (chan->scan_type.sign == 's')
- val16 = (s16)(val16 <<
- (16 - chan->scan_type.realbits)) >>
- (16 - chan->scan_type.realbits);
- *val = val16;
- mutex_unlock(&indio_dev->mlock);
- return IIO_VAL_INT;
+ return adis_single_conversion(indio_dev, chan,
+ ADIS16204_ERROR_ACTIVE, val);
case IIO_CHAN_INFO_SCALE:
switch (chan->type) {
case IIO_VOLTAGE:
case IIO_CHAN_INFO_PEAK:
if (mask == IIO_CHAN_INFO_CALIBBIAS) {
bits = 12;
- addrind = 1;
+ addrind = 0;
} else { /* PEAK_SEPARATE */
bits = 14;
- addrind = 2;
+ addrind = 1;
}
mutex_lock(&indio_dev->mlock);
- addr = adis16204_addresses[chan->address][addrind];
- ret = adis16204_spi_read_reg_16(indio_dev, addr, &val16);
+ addr = adis16204_addresses[chan->scan_index][addrind];
+ ret = adis_read_reg_16(st, addr, &val16);
if (ret) {
mutex_unlock(&indio_dev->mlock);
return ret;
int val2,
long mask)
{
+ struct adis *st = iio_priv(indio_dev);
int bits;
s16 val16;
u8 addr;
return -EINVAL;
}
val16 = val & ((1 << bits) - 1);
- addr = adis16204_addresses[chan->address][1];
- return adis16204_spi_write_reg_16(indio_dev, addr, val16);
+ addr = adis16204_addresses[chan->scan_index][1];
+ return adis_write_reg_16(st, addr, val16);
}
return -EINVAL;
}
static const struct iio_chan_spec adis16204_channels[] = {
- {
- .type = IIO_VOLTAGE,
- .indexed = 1, /* Note was not previously indexed */
- .channel = 0,
- .extend_name = "supply",
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
- .address = in_supply,
- .scan_index = ADIS16204_SCAN_SUPPLY,
- .scan_type = {
- .sign = 'u',
- .realbits = 12,
- .storagebits = 16,
- },
- }, {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 1,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
- .address = in_aux,
- .scan_index = ADIS16204_SCAN_AUX_ADC,
- .scan_type = {
- .sign = 'u',
- .realbits = 12,
- .storagebits = 16,
- },
- }, {
- .type = IIO_TEMP,
- .indexed = 1,
- .channel = 0,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SEPARATE_BIT |
- IIO_CHAN_INFO_OFFSET_SEPARATE_BIT,
- .address = temp,
- .scan_index = ADIS16204_SCAN_TEMP,
- .scan_type = {
- .sign = 'u',
- .realbits = 12,
- .storagebits = 16,
- },
- }, {
- .type = IIO_ACCEL,
- .modified = 1,
- .channel2 = IIO_MOD_X,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SEPARATE_BIT |
+ ADIS_SUPPLY_CHAN(ADIS16204_SUPPLY_OUT, ADIS16204_SCAN_SUPPLY, 12),
+ ADIS_AUX_ADC_CHAN(ADIS16204_AUX_ADC, ADIS16204_SCAN_AUX_ADC, 12),
+ ADIS_TEMP_CHAN(ADIS16204_TEMP_OUT, ADIS16204_SCAN_TEMP, 12),
+ ADIS_ACCEL_CHAN(X, ADIS16204_XACCL_OUT, ADIS16204_SCAN_ACC_X,
IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
- IIO_CHAN_INFO_PEAK_SEPARATE_BIT,
- .address = accel_x,
- .scan_index = ADIS16204_SCAN_ACC_X,
- .scan_type = {
- .sign = 's',
- .realbits = 14,
- .storagebits = 16,
- },
- }, {
- .type = IIO_ACCEL,
- .modified = 1,
- .channel2 = IIO_MOD_Y,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SEPARATE_BIT |
+ IIO_CHAN_INFO_PEAK_SEPARATE_BIT, 14),
+ ADIS_ACCEL_CHAN(Y, ADIS16204_YACCL_OUT, ADIS16204_SCAN_ACC_Y,
IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
- IIO_CHAN_INFO_PEAK_SEPARATE_BIT,
- .address = accel_y,
- .scan_index = ADIS16204_SCAN_ACC_Y,
- .scan_type = {
- .sign = 's',
- .realbits = 14,
- .storagebits = 16,
- },
- },
+ IIO_CHAN_INFO_PEAK_SEPARATE_BIT, 14),
+ ADIS_ACCEL_CHAN(ROOT_SUM_SQUARED_X_Y, ADIS16204_XY_RSS_OUT,
+ ADIS16204_SCAN_ACC_XY, IIO_CHAN_INFO_PEAK_SEPARATE_BIT, 14),
IIO_CHAN_SOFT_TIMESTAMP(5),
- {
- .type = IIO_ACCEL,
- .modified = 1,
- .channel2 = IIO_MOD_ROOT_SUM_SQUARED_X_Y,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SEPARATE_BIT |
- IIO_CHAN_INFO_PEAK_SEPARATE_BIT,
- .address = accel_xy,
- .scan_type = {
- .sign = 'u',
- .realbits = 14,
- .storagebits = 16,
- },
- }
};
static const struct iio_info adis16204_info = {
.read_raw = &adis16204_read_raw,
.write_raw = &adis16204_write_raw,
+ .update_scan_mode = adis_update_scan_mode,
.driver_module = THIS_MODULE,
};
+static const char * const adis16204_status_error_msgs[] = {
+ [ADIS16204_DIAG_STAT_SELFTEST_FAIL_BIT] = "Self test failure",
+ [ADIS16204_DIAG_STAT_SPI_FAIL_BIT] = "SPI failure",
+ [ADIS16204_DIAG_STAT_FLASH_UPT_BIT] = "Flash update failed",
+ [ADIS16204_DIAG_STAT_POWER_HIGH_BIT] = "Power supply above 3.625V",
+ [ADIS16204_DIAG_STAT_POWER_LOW_BIT] = "Power supply below 2.975V",
+};
+
+static const struct adis_data adis16204_data = {
+ .read_delay = 20,
+ .msc_ctrl_reg = ADIS16204_MSC_CTRL,
+ .glob_cmd_reg = ADIS16204_GLOB_CMD,
+ .diag_stat_reg = ADIS16204_DIAG_STAT,
+
+ .self_test_mask = ADIS16204_MSC_CTRL_SELF_TEST_EN,
+ .startup_delay = ADIS16204_STARTUP_DELAY,
+
+ .status_error_msgs = adis16204_status_error_msgs,
+ .status_error_mask = BIT(ADIS16204_DIAG_STAT_SELFTEST_FAIL_BIT) |
+ BIT(ADIS16204_DIAG_STAT_SPI_FAIL_BIT) |
+ BIT(ADIS16204_DIAG_STAT_FLASH_UPT_BIT) |
+ BIT(ADIS16204_DIAG_STAT_POWER_HIGH_BIT) |
+ BIT(ADIS16204_DIAG_STAT_POWER_LOW_BIT),
+};
+
static int __devinit adis16204_probe(struct spi_device *spi)
{
int ret;
- struct adis16204_state *st;
+ struct adis *st;
struct iio_dev *indio_dev;
/* setup the industrialio driver allocated elements */
st = iio_priv(indio_dev);
/* this is only used for removal purposes */
spi_set_drvdata(spi, indio_dev);
- st->us = spi;
- mutex_init(&st->buf_lock);
indio_dev->name = spi->dev.driver->name;
indio_dev->dev.parent = &spi->dev;
indio_dev->num_channels = ARRAY_SIZE(adis16204_channels);
indio_dev->modes = INDIO_DIRECT_MODE;
- ret = adis16204_configure_ring(indio_dev);
+ ret = adis_init(st, indio_dev, spi, &adis16204_data);
if (ret)
goto error_free_dev;
- ret = iio_buffer_register(indio_dev,
- adis16204_channels,
- 6);
- if (ret) {
- printk(KERN_ERR "failed to initialize the ring\n");
- goto error_unreg_ring_funcs;
- }
-
- if (spi->irq) {
- ret = adis16204_probe_trigger(indio_dev);
- if (ret)
- goto error_uninitialize_ring;
- }
+ ret = adis_setup_buffer_and_trigger(st, indio_dev, NULL);
+ if (ret)
+ goto error_free_dev;
/* Get the device into a sane initial state */
- ret = adis16204_initial_setup(indio_dev);
+ ret = adis_initial_startup(st);
if (ret)
- goto error_remove_trigger;
+ goto error_cleanup_buffer_trigger;
ret = iio_device_register(indio_dev);
if (ret)
- goto error_remove_trigger;
+ goto error_cleanup_buffer_trigger;
return 0;
-error_remove_trigger:
- adis16204_remove_trigger(indio_dev);
-error_uninitialize_ring:
- iio_buffer_unregister(indio_dev);
-error_unreg_ring_funcs:
- adis16204_unconfigure_ring(indio_dev);
+error_cleanup_buffer_trigger:
+ adis_cleanup_buffer_and_trigger(st, indio_dev);
error_free_dev:
iio_device_free(indio_dev);
error_ret:
static int __devexit adis16204_remove(struct spi_device *spi)
{
struct iio_dev *indio_dev = spi_get_drvdata(spi);
+ struct adis *st = iio_priv(indio_dev);
iio_device_unregister(indio_dev);
- adis16204_remove_trigger(indio_dev);
- iio_buffer_unregister(indio_dev);
- adis16204_unconfigure_ring(indio_dev);
+ adis_cleanup_buffer_and_trigger(st, indio_dev);
iio_device_free(indio_dev);
return 0;
+++ /dev/null
-#include <linux/export.h>
-#include <linux/interrupt.h>
-#include <linux/mutex.h>
-#include <linux/kernel.h>
-#include <linux/spi/spi.h>
-#include <linux/slab.h>
-
-#include <linux/iio/iio.h>
-#include "../ring_sw.h"
-#include <linux/iio/trigger_consumer.h>
-#include "adis16204.h"
-
-/**
- * adis16204_read_ring_data() read data registers which will be placed into ring
- * @indio_dev: the IIO device
- * @rx: somewhere to pass back the value read
- **/
-static int adis16204_read_ring_data(struct iio_dev *indio_dev, u8 *rx)
-{
- struct spi_message msg;
- struct adis16204_state *st = iio_priv(indio_dev);
- struct spi_transfer xfers[ADIS16204_OUTPUTS + 1];
- int ret;
- int i;
-
- mutex_lock(&st->buf_lock);
-
- spi_message_init(&msg);
-
- memset(xfers, 0, sizeof(xfers));
- for (i = 0; i <= ADIS16204_OUTPUTS; i++) {
- xfers[i].bits_per_word = 8;
- xfers[i].cs_change = 1;
- xfers[i].len = 2;
- xfers[i].delay_usecs = 20;
- xfers[i].tx_buf = st->tx + 2 * i;
- st->tx[2 * i]
- = ADIS16204_READ_REG(ADIS16204_SUPPLY_OUT + 2 * i);
- st->tx[2 * i + 1] = 0;
- if (i >= 1)
- xfers[i].rx_buf = rx + 2 * (i - 1);
- spi_message_add_tail(&xfers[i], &msg);
- }
-
- ret = spi_sync(st->us, &msg);
- if (ret)
- dev_err(&st->us->dev, "problem when burst reading");
-
- mutex_unlock(&st->buf_lock);
-
- return ret;
-}
-
-/* Whilst this makes a lot of calls to iio_sw_ring functions - it is to device
- * specific to be rolled into the core.
- */
-static irqreturn_t adis16204_trigger_handler(int irq, void *p)
-{
- struct iio_poll_func *pf = p;
- struct iio_dev *indio_dev = pf->indio_dev;
- struct adis16204_state *st = iio_priv(indio_dev);
- int i = 0;
- s16 *data;
-
- data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
- if (data == NULL) {
- dev_err(&st->us->dev, "memory alloc failed in ring bh");
- goto done;
- }
-
- if (!bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength) &&
- adis16204_read_ring_data(indio_dev, st->rx) >= 0)
- for (; i < bitmap_weight(indio_dev->active_scan_mask,
- indio_dev->masklength); i++)
- data[i] = be16_to_cpup((__be16 *)&(st->rx[i*2]));
-
- /* Guaranteed to be aligned with 8 byte boundary */
- if (indio_dev->scan_timestamp)
- *((s64 *)(data + ((i + 3)/4)*4)) = pf->timestamp;
-
- iio_push_to_buffers(indio_dev, (u8 *)data);
-
- kfree(data);
-done:
- iio_trigger_notify_done(indio_dev->trig);
-
- return IRQ_HANDLED;
-}
-
-void adis16204_unconfigure_ring(struct iio_dev *indio_dev)
-{
- iio_dealloc_pollfunc(indio_dev->pollfunc);
- iio_sw_rb_free(indio_dev->buffer);
-}
-
-static const struct iio_buffer_setup_ops adis16204_ring_setup_ops = {
- .preenable = &iio_sw_buffer_preenable,
- .postenable = &iio_triggered_buffer_postenable,
- .predisable = &iio_triggered_buffer_predisable,
-};
-
-int adis16204_configure_ring(struct iio_dev *indio_dev)
-{
- int ret = 0;
- struct iio_buffer *ring;
-
- ring = iio_sw_rb_allocate(indio_dev);
- if (!ring) {
- ret = -ENOMEM;
- return ret;
- }
- indio_dev->buffer = ring;
- ring->scan_timestamp = true;
- indio_dev->setup_ops = &adis16204_ring_setup_ops;
-
- indio_dev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time,
- &adis16204_trigger_handler,
- IRQF_ONESHOT,
- indio_dev,
- "%s_consumer%d",
- indio_dev->name,
- indio_dev->id);
- if (indio_dev->pollfunc == NULL) {
- ret = -ENOMEM;
- goto error_iio_sw_rb_free;
- }
-
- indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
- return 0;
-
-error_iio_sw_rb_free:
- iio_sw_rb_free(indio_dev->buffer);
- return ret;
-}
+++ /dev/null
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/spi/spi.h>
-#include <linux/export.h>
-
-#include <linux/iio/iio.h>
-#include <linux/iio/trigger.h>
-#include "adis16204.h"
-
-/**
- * adis16204_data_rdy_trigger_set_state() set datardy interrupt state
- **/
-static int adis16204_data_rdy_trigger_set_state(struct iio_trigger *trig,
- bool state)
-{
- struct iio_dev *indio_dev = trig->private_data;
-
- dev_dbg(&indio_dev->dev, "%s (%d)\n", __func__, state);
- return adis16204_set_irq(indio_dev, state);
-}
-
-static const struct iio_trigger_ops adis16204_trigger_ops = {
- .owner = THIS_MODULE,
- .set_trigger_state = &adis16204_data_rdy_trigger_set_state,
-};
-
-int adis16204_probe_trigger(struct iio_dev *indio_dev)
-{
- int ret;
- struct adis16204_state *st = iio_priv(indio_dev);
-
- st->trig = iio_trigger_alloc("adis16204-dev%d", indio_dev->id);
- if (st->trig == NULL) {
- ret = -ENOMEM;
- goto error_ret;
- }
-
- ret = request_irq(st->us->irq,
- &iio_trigger_generic_data_rdy_poll,
- IRQF_TRIGGER_RISING,
- "adis16204",
- st->trig);
- if (ret)
- goto error_free_trig;
-
- st->trig->dev.parent = &st->us->dev;
- st->trig->ops = &adis16204_trigger_ops;
- st->trig->private_data = indio_dev;
- ret = iio_trigger_register(st->trig);
-
- /* select default trigger */
- indio_dev->trig = st->trig;
- if (ret)
- goto error_free_irq;
-
- return 0;
-
-error_free_irq:
- free_irq(st->us->irq, st->trig);
-error_free_trig:
- iio_trigger_free(st->trig);
-error_ret:
- return ret;
-}
-
-void adis16204_remove_trigger(struct iio_dev *indio_dev)
-{
- struct adis16204_state *state = iio_priv(indio_dev);
-
- iio_trigger_unregister(state->trig);
- free_irq(state->us->irq, state->trig);
- iio_trigger_free(state->trig);
-}
#define ADIS16209_STARTUP_DELAY 220 /* ms */
-#define ADIS16209_READ_REG(a) a
-#define ADIS16209_WRITE_REG(a) ((a) | 0x80)
-
/* Flash memory write count */
#define ADIS16209_FLASH_CNT 0x00
/* Output, power supply */
/* Operation, system command register */
#define ADIS16209_GLOB_CMD 0x3E
-#define ADIS16209_OUTPUTS 8
-
/* MSC_CTRL */
/* Self-test at power-on: 1 = disabled, 0 = enabled */
#define ADIS16209_MSC_CTRL_PWRUP_SELF_TEST (1 << 10)
/* Alarm 1 status: 1 = alarm active, 0 = alarm inactive */
#define ADIS16209_DIAG_STAT_ALARM1 (1<<8)
/* Self-test diagnostic error flag: 1 = error condition, 0 = normal operation */
-#define ADIS16209_DIAG_STAT_SELFTEST_FAIL (1<<5)
+#define ADIS16209_DIAG_STAT_SELFTEST_FAIL_BIT 5
/* SPI communications failure */
-#define ADIS16209_DIAG_STAT_SPI_FAIL (1<<3)
+#define ADIS16209_DIAG_STAT_SPI_FAIL_BIT 3
/* Flash update failure */
-#define ADIS16209_DIAG_STAT_FLASH_UPT (1<<2)
+#define ADIS16209_DIAG_STAT_FLASH_UPT_BIT 2
/* Power supply above 3.625 V */
-#define ADIS16209_DIAG_STAT_POWER_HIGH (1<<1)
+#define ADIS16209_DIAG_STAT_POWER_HIGH_BIT 1
/* Power supply below 3.15 V */
-#define ADIS16209_DIAG_STAT_POWER_LOW (1<<0)
+#define ADIS16209_DIAG_STAT_POWER_LOW_BIT 0
/* GLOB_CMD */
#define ADIS16209_GLOB_CMD_SW_RESET (1<<7)
#define ADIS16209_GLOB_CMD_CLEAR_STAT (1<<4)
#define ADIS16209_GLOB_CMD_FACTORY_CAL (1<<1)
-#define ADIS16209_MAX_TX 24
-#define ADIS16209_MAX_RX 24
-
#define ADIS16209_ERROR_ACTIVE (1<<14)
-/**
- * struct adis16209_state - device instance specific data
- * @us: actual spi_device
- * @trig: data ready trigger registered with iio
- * @tx: transmit buffer
- * @rx: receive buffer
- * @buf_lock: mutex to protect tx and rx
- **/
-struct adis16209_state {
- struct spi_device *us;
- struct iio_trigger *trig;
- struct mutex buf_lock;
- u8 tx[ADIS16209_MAX_TX] ____cacheline_aligned;
- u8 rx[ADIS16209_MAX_RX];
-};
-
-int adis16209_set_irq(struct iio_dev *indio_dev, bool enable);
-
#define ADIS16209_SCAN_SUPPLY 0
#define ADIS16209_SCAN_ACC_X 1
#define ADIS16209_SCAN_ACC_Y 2
#define ADIS16209_SCAN_INCLI_Y 6
#define ADIS16209_SCAN_ROT 7
-#ifdef CONFIG_IIO_BUFFER
-
-void adis16209_remove_trigger(struct iio_dev *indio_dev);
-int adis16209_probe_trigger(struct iio_dev *indio_dev);
-
-ssize_t adis16209_read_data_from_ring(struct device *dev,
- struct device_attribute *attr,
- char *buf);
-
-int adis16209_configure_ring(struct iio_dev *indio_dev);
-void adis16209_unconfigure_ring(struct iio_dev *indio_dev);
-
-#else /* CONFIG_IIO_BUFFER */
-
-static inline void adis16209_remove_trigger(struct iio_dev *indio_dev)
-{
-}
-
-static inline int adis16209_probe_trigger(struct iio_dev *indio_dev)
-{
- return 0;
-}
-
-static inline ssize_t
-adis16209_read_data_from_ring(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return 0;
-}
-
-static int adis16209_configure_ring(struct iio_dev *indio_dev)
-{
- return 0;
-}
-
-static inline void adis16209_unconfigure_ring(struct iio_dev *indio_dev)
-{
-}
-
-#endif /* CONFIG_IIO_BUFFER */
#endif /* SPI_ADIS16209_H_ */
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/iio/buffer.h>
+#include <linux/iio/imu/adis.h>
#include "adis16209.h"
-/**
- * adis16209_spi_write_reg_8() - write single byte to a register
- * @indio_dev: iio device associated with actual device
- * @reg_address: the address of the register to be written
- * @val: the value to write
- **/
-static int adis16209_spi_write_reg_8(struct iio_dev *indio_dev,
- u8 reg_address,
- u8 val)
-{
- int ret;
- struct adis16209_state *st = iio_priv(indio_dev);
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = ADIS16209_WRITE_REG(reg_address);
- st->tx[1] = val;
-
- ret = spi_write(st->us, st->tx, 2);
- mutex_unlock(&st->buf_lock);
-
- return ret;
-}
-
-/**
- * adis16209_spi_write_reg_16() - write 2 bytes to a pair of registers
- * @indio_dev: iio device associated actual device
- * @reg_address: the address of the lower of the two registers. Second register
- * is assumed to have address one greater.
- * @val: value to be written
- **/
-static int adis16209_spi_write_reg_16(struct iio_dev *indio_dev,
- u8 lower_reg_address,
- u16 value)
-{
- int ret;
- struct spi_message msg;
- struct adis16209_state *st = iio_priv(indio_dev);
- struct spi_transfer xfers[] = {
- {
- .tx_buf = st->tx,
- .bits_per_word = 8,
- .len = 2,
- .cs_change = 1,
- .delay_usecs = 30,
- }, {
- .tx_buf = st->tx + 2,
- .bits_per_word = 8,
- .len = 2,
- .delay_usecs = 30,
- },
- };
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = ADIS16209_WRITE_REG(lower_reg_address);
- st->tx[1] = value & 0xFF;
- st->tx[2] = ADIS16209_WRITE_REG(lower_reg_address + 1);
- st->tx[3] = (value >> 8) & 0xFF;
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfers[0], &msg);
- spi_message_add_tail(&xfers[1], &msg);
- ret = spi_sync(st->us, &msg);
- mutex_unlock(&st->buf_lock);
-
- return ret;
-}
-
-/**
- * adis16209_spi_read_reg_16() - read 2 bytes from a 16-bit register
- * @indio_dev: iio device associated with device
- * @reg_address: the address of the lower of the two registers. Second register
- * is assumed to have address one greater.
- * @val: somewhere to pass back the value read
- **/
-static int adis16209_spi_read_reg_16(struct iio_dev *indio_dev,
- u8 lower_reg_address,
- u16 *val)
-{
- struct spi_message msg;
- struct adis16209_state *st = iio_priv(indio_dev);
- int ret;
- struct spi_transfer xfers[] = {
- {
- .tx_buf = st->tx,
- .bits_per_word = 8,
- .len = 2,
- .cs_change = 1,
- .delay_usecs = 30,
- }, {
- .rx_buf = st->rx,
- .bits_per_word = 8,
- .len = 2,
- .delay_usecs = 30,
- },
- };
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = ADIS16209_READ_REG(lower_reg_address);
- st->tx[1] = 0;
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfers[0], &msg);
- spi_message_add_tail(&xfers[1], &msg);
- ret = spi_sync(st->us, &msg);
- if (ret) {
- dev_err(&st->us->dev,
- "problem when reading 16 bit register 0x%02X",
- lower_reg_address);
- goto error_ret;
- }
- *val = (st->rx[0] << 8) | st->rx[1];
-
-error_ret:
- mutex_unlock(&st->buf_lock);
- return ret;
-}
-
-static int adis16209_reset(struct iio_dev *indio_dev)
-{
- int ret;
- ret = adis16209_spi_write_reg_8(indio_dev,
- ADIS16209_GLOB_CMD,
- ADIS16209_GLOB_CMD_SW_RESET);
- if (ret)
- dev_err(&indio_dev->dev, "problem resetting device");
-
- return ret;
-}
-
-int adis16209_set_irq(struct iio_dev *indio_dev, bool enable)
-{
- int ret = 0;
- u16 msc;
-
- ret = adis16209_spi_read_reg_16(indio_dev, ADIS16209_MSC_CTRL, &msc);
- if (ret)
- goto error_ret;
-
- msc |= ADIS16209_MSC_CTRL_ACTIVE_HIGH;
- msc &= ~ADIS16209_MSC_CTRL_DATA_RDY_DIO2;
- if (enable)
- msc |= ADIS16209_MSC_CTRL_DATA_RDY_EN;
- else
- msc &= ~ADIS16209_MSC_CTRL_DATA_RDY_EN;
-
- ret = adis16209_spi_write_reg_16(indio_dev, ADIS16209_MSC_CTRL, msc);
-
-error_ret:
- return ret;
-}
-
-static int adis16209_check_status(struct iio_dev *indio_dev)
-{
- u16 status;
- int ret;
-
- ret = adis16209_spi_read_reg_16(indio_dev,
- ADIS16209_DIAG_STAT, &status);
- if (ret < 0) {
- dev_err(&indio_dev->dev, "Reading status failed\n");
- goto error_ret;
- }
- ret = status & 0x1F;
-
- if (status & ADIS16209_DIAG_STAT_SELFTEST_FAIL)
- dev_err(&indio_dev->dev, "Self test failure\n");
- if (status & ADIS16209_DIAG_STAT_SPI_FAIL)
- dev_err(&indio_dev->dev, "SPI failure\n");
- if (status & ADIS16209_DIAG_STAT_FLASH_UPT)
- dev_err(&indio_dev->dev, "Flash update failed\n");
- if (status & ADIS16209_DIAG_STAT_POWER_HIGH)
- dev_err(&indio_dev->dev, "Power supply above 3.625V\n");
- if (status & ADIS16209_DIAG_STAT_POWER_LOW)
- dev_err(&indio_dev->dev, "Power supply below 3.15V\n");
-
-error_ret:
- return ret;
-}
-
-static int adis16209_self_test(struct iio_dev *indio_dev)
-{
- int ret;
- ret = adis16209_spi_write_reg_16(indio_dev,
- ADIS16209_MSC_CTRL,
- ADIS16209_MSC_CTRL_SELF_TEST_EN);
- if (ret) {
- dev_err(&indio_dev->dev, "problem starting self test");
- goto err_ret;
- }
-
- adis16209_check_status(indio_dev);
-
-err_ret:
- return ret;
-}
-
-static int adis16209_initial_setup(struct iio_dev *indio_dev)
-{
- int ret;
-
- /* Disable IRQ */
- ret = adis16209_set_irq(indio_dev, false);
- if (ret) {
- dev_err(&indio_dev->dev, "disable irq failed");
- goto err_ret;
- }
-
- /* Do self test */
- ret = adis16209_self_test(indio_dev);
- if (ret) {
- dev_err(&indio_dev->dev, "self test failure");
- goto err_ret;
- }
-
- /* Read status register to check the result */
- ret = adis16209_check_status(indio_dev);
- if (ret) {
- adis16209_reset(indio_dev);
- dev_err(&indio_dev->dev, "device not playing ball -> reset");
- msleep(ADIS16209_STARTUP_DELAY);
- ret = adis16209_check_status(indio_dev);
- if (ret) {
- dev_err(&indio_dev->dev, "giving up");
- goto err_ret;
- }
- }
-
-err_ret:
- return ret;
-}
-
-enum adis16209_chan {
- in_supply,
- temp,
- accel_x,
- accel_y,
- incli_x,
- incli_y,
- in_aux,
- rot,
-};
-
-static const u8 adis16209_addresses[8][2] = {
- [in_supply] = { ADIS16209_SUPPLY_OUT },
- [in_aux] = { ADIS16209_AUX_ADC },
- [accel_x] = { ADIS16209_XACCL_OUT, ADIS16209_XACCL_NULL },
- [accel_y] = { ADIS16209_YACCL_OUT, ADIS16209_YACCL_NULL },
- [incli_x] = { ADIS16209_XINCL_OUT, ADIS16209_XINCL_NULL },
- [incli_y] = { ADIS16209_YINCL_OUT, ADIS16209_YINCL_NULL },
- [rot] = { ADIS16209_ROT_OUT },
- [temp] = { ADIS16209_TEMP_OUT },
+static const u8 adis16209_addresses[8][1] = {
+ [ADIS16209_SCAN_SUPPLY] = { },
+ [ADIS16209_SCAN_AUX_ADC] = { },
+ [ADIS16209_SCAN_ACC_X] = { ADIS16209_XACCL_NULL },
+ [ADIS16209_SCAN_ACC_Y] = { ADIS16209_YACCL_NULL },
+ [ADIS16209_SCAN_INCLI_X] = { ADIS16209_XINCL_NULL },
+ [ADIS16209_SCAN_INCLI_Y] = { ADIS16209_YINCL_NULL },
+ [ADIS16209_SCAN_ROT] = { },
+ [ADIS16209_SCAN_TEMP] = { },
};
static int adis16209_write_raw(struct iio_dev *indio_dev,
int val2,
long mask)
{
+ struct adis *st = iio_priv(indio_dev);
int bits;
s16 val16;
u8 addr;
return -EINVAL;
}
val16 = val & ((1 << bits) - 1);
- addr = adis16209_addresses[chan->address][1];
- return adis16209_spi_write_reg_16(indio_dev, addr, val16);
+ addr = adis16209_addresses[chan->scan_index][0];
+ return adis_write_reg_16(st, addr, val16);
}
return -EINVAL;
}
int *val, int *val2,
long mask)
{
+ struct adis *st = iio_priv(indio_dev);
int ret;
int bits;
u8 addr;
switch (mask) {
case IIO_CHAN_INFO_RAW:
- mutex_lock(&indio_dev->mlock);
- addr = adis16209_addresses[chan->address][0];
- ret = adis16209_spi_read_reg_16(indio_dev, addr, &val16);
- if (ret) {
- mutex_unlock(&indio_dev->mlock);
- return ret;
- }
-
- if (val16 & ADIS16209_ERROR_ACTIVE) {
- ret = adis16209_check_status(indio_dev);
- if (ret) {
- mutex_unlock(&indio_dev->mlock);
- return ret;
- }
- }
- val16 = val16 & ((1 << chan->scan_type.realbits) - 1);
- if (chan->scan_type.sign == 's')
- val16 = (s16)(val16 <<
- (16 - chan->scan_type.realbits)) >>
- (16 - chan->scan_type.realbits);
- *val = val16;
- mutex_unlock(&indio_dev->mlock);
- return IIO_VAL_INT;
+ return adis_single_conversion(indio_dev, chan,
+ ADIS16209_ERROR_ACTIVE, val);
case IIO_CHAN_INFO_SCALE:
switch (chan->type) {
case IIO_VOLTAGE:
return -EINVAL;
}
mutex_lock(&indio_dev->mlock);
- addr = adis16209_addresses[chan->address][1];
- ret = adis16209_spi_read_reg_16(indio_dev, addr, &val16);
+ addr = adis16209_addresses[chan->scan_index][0];
+ ret = adis_read_reg_16(st, addr, &val16);
if (ret) {
mutex_unlock(&indio_dev->mlock);
return ret;
}
static const struct iio_chan_spec adis16209_channels[] = {
- {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 0,
- .extend_name = "supply",
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
- .address = in_supply,
- .scan_index = ADIS16209_SCAN_SUPPLY,
- .scan_type = {
- .sign = 'u',
- .realbits = 14,
- .storagebits = 16,
- },
- }, {
- .type = IIO_TEMP,
- .indexed = 0,
- .channel = 0,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SEPARATE_BIT |
- IIO_CHAN_INFO_OFFSET_SEPARATE_BIT,
- .address = temp,
- .scan_index = ADIS16209_SCAN_TEMP,
- .scan_type = {
- .sign = 'u',
- .realbits = 12,
- .storagebits = 16,
- },
- }, {
- .type = IIO_ACCEL,
- .modified = 1,
- .channel2 = IIO_MOD_X,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SHARED_BIT |
- IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT,
- .address = accel_x,
- .scan_index = ADIS16209_SCAN_ACC_X,
- .scan_type = {
- .sign = 's',
- .realbits = 14,
- .storagebits = 16,
- },
- }, {
- .type = IIO_ACCEL,
- .modified = 1,
- .channel2 = IIO_MOD_Y,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SHARED_BIT |
- IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT,
- .address = accel_y,
- .scan_index = ADIS16209_SCAN_ACC_Y,
- .scan_type = {
- .sign = 's',
- .realbits = 14,
- .storagebits = 16,
- },
- }, {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 1,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
- .address = in_aux,
- .scan_index = ADIS16209_SCAN_AUX_ADC,
- .scan_type = {
- .sign = 'u',
- .realbits = 12,
- .storagebits = 16,
- },
- }, {
- .type = IIO_INCLI,
- .modified = 1,
- .channel2 = IIO_MOD_X,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SHARED_BIT,
- .address = incli_x,
- .scan_index = ADIS16209_SCAN_INCLI_X,
- .scan_type = {
- .sign = 's',
- .realbits = 14,
- .storagebits = 16,
- },
- }, {
- .type = IIO_INCLI,
- .modified = 1,
- .channel2 = IIO_MOD_Y,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SHARED_BIT,
- .address = incli_y,
- .scan_index = ADIS16209_SCAN_INCLI_Y,
- .scan_type = {
- .sign = 's',
- .realbits = 14,
- .storagebits = 16,
- },
- }, {
- .type = IIO_ROT,
- .modified = 1,
- .channel2 = IIO_MOD_X,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- IIO_CHAN_INFO_SCALE_SHARED_BIT,
- .address = rot,
- .scan_index = ADIS16209_SCAN_ROT,
- .scan_type = {
- .sign = 's',
- .realbits = 14,
- .storagebits = 16,
- },
- },
+ ADIS_SUPPLY_CHAN(ADIS16209_SUPPLY_OUT, ADIS16209_SCAN_SUPPLY, 14),
+ ADIS_TEMP_CHAN(ADIS16209_TEMP_OUT, ADIS16209_SCAN_TEMP, 12),
+ ADIS_ACCEL_CHAN(X, ADIS16209_XACCL_OUT, ADIS16209_SCAN_ACC_X,
+ IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT, 14),
+ ADIS_ACCEL_CHAN(Y, ADIS16209_YACCL_OUT, ADIS16209_SCAN_ACC_Y,
+ IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT, 14),
+ ADIS_AUX_ADC_CHAN(ADIS16209_AUX_ADC, ADIS16209_SCAN_AUX_ADC, 12),
+ ADIS_INCLI_CHAN(X, ADIS16209_XINCL_OUT, ADIS16209_SCAN_INCLI_X, 0, 14),
+ ADIS_INCLI_CHAN(Y, ADIS16209_YINCL_OUT, ADIS16209_SCAN_INCLI_Y, 0, 14),
+ ADIS_ROT_CHAN(X, ADIS16209_ROT_OUT, ADIS16209_SCAN_ROT, 0, 14),
IIO_CHAN_SOFT_TIMESTAMP(8)
};
static const struct iio_info adis16209_info = {
.read_raw = &adis16209_read_raw,
.write_raw = &adis16209_write_raw,
+ .update_scan_mode = adis_update_scan_mode,
.driver_module = THIS_MODULE,
};
+static const char * const adis16209_status_error_msgs[] = {
+ [ADIS16209_DIAG_STAT_SELFTEST_FAIL_BIT] = "Self test failure",
+ [ADIS16209_DIAG_STAT_SPI_FAIL_BIT] = "SPI failure",
+ [ADIS16209_DIAG_STAT_FLASH_UPT_BIT] = "Flash update failed",
+ [ADIS16209_DIAG_STAT_POWER_HIGH_BIT] = "Power supply above 3.625V",
+ [ADIS16209_DIAG_STAT_POWER_LOW_BIT] = "Power supply below 3.15V",
+};
+
+static const struct adis_data adis16209_data = {
+ .read_delay = 30,
+ .msc_ctrl_reg = ADIS16209_MSC_CTRL,
+ .glob_cmd_reg = ADIS16209_GLOB_CMD,
+ .diag_stat_reg = ADIS16209_DIAG_STAT,
+
+ .self_test_mask = ADIS16209_MSC_CTRL_SELF_TEST_EN,
+ .startup_delay = ADIS16209_STARTUP_DELAY,
+
+ .status_error_msgs = adis16209_status_error_msgs,
+ .status_error_mask = BIT(ADIS16209_DIAG_STAT_SELFTEST_FAIL_BIT) |
+ BIT(ADIS16209_DIAG_STAT_SPI_FAIL_BIT) |
+ BIT(ADIS16209_DIAG_STAT_FLASH_UPT_BIT) |
+ BIT(ADIS16209_DIAG_STAT_POWER_HIGH_BIT) |
+ BIT(ADIS16209_DIAG_STAT_POWER_LOW_BIT),
+};
+
+
static int __devinit adis16209_probe(struct spi_device *spi)
{
int ret;
- struct adis16209_state *st;
+ struct adis *st;
struct iio_dev *indio_dev;
/* setup the industrialio driver allocated elements */
st = iio_priv(indio_dev);
/* this is only used for removal purposes */
spi_set_drvdata(spi, indio_dev);
- st->us = spi;
- mutex_init(&st->buf_lock);
indio_dev->name = spi->dev.driver->name;
indio_dev->dev.parent = &spi->dev;
indio_dev->num_channels = ARRAY_SIZE(adis16209_channels);
indio_dev->modes = INDIO_DIRECT_MODE;
- ret = adis16209_configure_ring(indio_dev);
+ ret = adis_init(st, indio_dev, spi, &adis16209_data);
+ if (ret)
+ goto error_free_dev;
+ ret = adis_setup_buffer_and_trigger(st, indio_dev, NULL);
if (ret)
goto error_free_dev;
-
- ret = iio_buffer_register(indio_dev,
- adis16209_channels,
- ARRAY_SIZE(adis16209_channels));
- if (ret) {
- printk(KERN_ERR "failed to initialize the ring\n");
- goto error_unreg_ring_funcs;
- }
-
- if (spi->irq) {
- ret = adis16209_probe_trigger(indio_dev);
- if (ret)
- goto error_uninitialize_ring;
- }
/* Get the device into a sane initial state */
- ret = adis16209_initial_setup(indio_dev);
+ ret = adis_initial_startup(st);
if (ret)
- goto error_remove_trigger;
+ goto error_cleanup_buffer_trigger;
ret = iio_device_register(indio_dev);
if (ret)
- goto error_remove_trigger;
+ goto error_cleanup_buffer_trigger;
return 0;
-error_remove_trigger:
- adis16209_remove_trigger(indio_dev);
-error_uninitialize_ring:
- iio_buffer_unregister(indio_dev);
-error_unreg_ring_funcs:
- adis16209_unconfigure_ring(indio_dev);
+error_cleanup_buffer_trigger:
+ adis_cleanup_buffer_and_trigger(st, indio_dev);
error_free_dev:
iio_device_free(indio_dev);
error_ret:
static int __devexit adis16209_remove(struct spi_device *spi)
{
struct iio_dev *indio_dev = spi_get_drvdata(spi);
+ struct adis *st = iio_priv(indio_dev);
iio_device_unregister(indio_dev);
- adis16209_remove_trigger(indio_dev);
- iio_buffer_unregister(indio_dev);
- adis16209_unconfigure_ring(indio_dev);
+ adis_cleanup_buffer_and_trigger(st, indio_dev);
iio_device_free(indio_dev);
return 0;
+++ /dev/null
-#include <linux/export.h>
-#include <linux/interrupt.h>
-#include <linux/mutex.h>
-#include <linux/kernel.h>
-#include <linux/spi/spi.h>
-#include <linux/slab.h>
-
-#include <linux/iio/iio.h>
-#include "../ring_sw.h"
-#include <linux/iio/trigger_consumer.h>
-#include "adis16209.h"
-
-/**
- * adis16209_read_ring_data() read data registers which will be placed into ring
- * @indio_dev: the IIO device
- * @rx: somewhere to pass back the value read
- **/
-static int adis16209_read_ring_data(struct iio_dev *indio_dev, u8 *rx)
-{
- struct spi_message msg;
- struct adis16209_state *st = iio_priv(indio_dev);
- struct spi_transfer xfers[ADIS16209_OUTPUTS + 1];
- int ret;
- int i;
-
- mutex_lock(&st->buf_lock);
-
- spi_message_init(&msg);
-
- memset(xfers, 0, sizeof(xfers));
- for (i = 0; i <= ADIS16209_OUTPUTS; i++) {
- xfers[i].bits_per_word = 8;
- xfers[i].cs_change = 1;
- xfers[i].len = 2;
- xfers[i].delay_usecs = 30;
- xfers[i].tx_buf = st->tx + 2 * i;
- st->tx[2 * i]
- = ADIS16209_READ_REG(ADIS16209_SUPPLY_OUT + 2 * i);
- st->tx[2 * i + 1] = 0;
- if (i >= 1)
- xfers[i].rx_buf = rx + 2 * (i - 1);
- spi_message_add_tail(&xfers[i], &msg);
- }
-
- ret = spi_sync(st->us, &msg);
- if (ret)
- dev_err(&st->us->dev, "problem when burst reading");
-
- mutex_unlock(&st->buf_lock);
-
- return ret;
-}
-
-/* Whilst this makes a lot of calls to iio_sw_ring functions - it is to device
- * specific to be rolled into the core.
- */
-static irqreturn_t adis16209_trigger_handler(int irq, void *p)
-{
- struct iio_poll_func *pf = p;
- struct iio_dev *indio_dev = pf->indio_dev;
- struct adis16209_state *st = iio_priv(indio_dev);
- int i = 0;
- s16 *data;
-
- data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
- if (data == NULL) {
- dev_err(&st->us->dev, "memory alloc failed in ring bh");
- goto done;
- }
-
- if (!bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength) &&
- adis16209_read_ring_data(indio_dev, st->rx) >= 0)
- for (; i < bitmap_weight(indio_dev->active_scan_mask,
- indio_dev->masklength); i++)
- data[i] = be16_to_cpup((__be16 *)&(st->rx[i*2]));
-
- /* Guaranteed to be aligned with 8 byte boundary */
- if (indio_dev->scan_timestamp)
- *((s64 *)(data + ((i + 3)/4)*4)) = pf->timestamp;
-
- iio_push_to_buffers(indio_dev, (u8 *)data);
-
- kfree(data);
-done:
- iio_trigger_notify_done(indio_dev->trig);
-
- return IRQ_HANDLED;
-}
-
-void adis16209_unconfigure_ring(struct iio_dev *indio_dev)
-{
- iio_dealloc_pollfunc(indio_dev->pollfunc);
- iio_sw_rb_free(indio_dev->buffer);
-}
-
-static const struct iio_buffer_setup_ops adis16209_ring_setup_ops = {
- .preenable = &iio_sw_buffer_preenable,
- .postenable = &iio_triggered_buffer_postenable,
- .predisable = &iio_triggered_buffer_predisable,
-};
-
-int adis16209_configure_ring(struct iio_dev *indio_dev)
-{
- int ret = 0;
- struct iio_buffer *ring;
-
- ring = iio_sw_rb_allocate(indio_dev);
- if (!ring) {
- ret = -ENOMEM;
- return ret;
- }
- indio_dev->buffer = ring;
- ring->scan_timestamp = true;
- indio_dev->setup_ops = &adis16209_ring_setup_ops;
-
- indio_dev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time,
- &adis16209_trigger_handler,
- IRQF_ONESHOT,
- indio_dev,
- "%s_consumer%d",
- indio_dev->name,
- indio_dev->id);
- if (indio_dev->pollfunc == NULL) {
- ret = -ENOMEM;
- goto error_iio_sw_rb_free;
- }
-
- indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
- return 0;
-
-error_iio_sw_rb_free:
- iio_sw_rb_free(indio_dev->buffer);
- return ret;
-}
+++ /dev/null
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/spi/spi.h>
-#include <linux/export.h>
-
-#include <linux/iio/iio.h>
-#include <linux/iio/trigger.h>
-#include "adis16209.h"
-
-/**
- * adis16209_data_rdy_trigger_set_state() set datardy interrupt state
- **/
-static int adis16209_data_rdy_trigger_set_state(struct iio_trigger *trig,
- bool state)
-{
- struct iio_dev *indio_dev = trig->private_data;
-
- dev_dbg(&indio_dev->dev, "%s (%d)\n", __func__, state);
- return adis16209_set_irq(indio_dev, state);
-}
-
-static const struct iio_trigger_ops adis16209_trigger_ops = {
- .owner = THIS_MODULE,
- .set_trigger_state = &adis16209_data_rdy_trigger_set_state,
-};
-
-int adis16209_probe_trigger(struct iio_dev *indio_dev)
-{
- int ret;
- struct adis16209_state *st = iio_priv(indio_dev);
-
- st->trig = iio_trigger_alloc("adis16209-dev%d", indio_dev->id);
- if (st->trig == NULL) {
- ret = -ENOMEM;
- goto error_ret;
- }
-
- ret = request_irq(st->us->irq,
- iio_trigger_generic_data_rdy_poll,
- IRQF_TRIGGER_RISING,
- "adis16209",
- st->trig);
- if (ret)
- goto error_free_trig;
- st->trig->dev.parent = &st->us->dev;
- st->trig->ops = &adis16209_trigger_ops;
- st->trig->private_data = indio_dev;
- ret = iio_trigger_register(st->trig);
-
- /* select default trigger */
- indio_dev->trig = st->trig;
- if (ret)
- goto error_free_irq;
-
- return 0;
-
-error_free_irq:
- free_irq(st->us->irq, st->trig);
-error_free_trig:
- iio_trigger_free(st->trig);
-error_ret:
- return ret;
-}
-
-void adis16209_remove_trigger(struct iio_dev *indio_dev)
-{
- struct adis16209_state *st = iio_priv(indio_dev);
-
- iio_trigger_unregister(st->trig);
- free_irq(st->us->irq, st->trig);
- iio_trigger_free(st->trig);
-}
#ifndef SPI_ADIS16220_H_
#define SPI_ADIS16220_H_
-#define ADIS16220_STARTUP_DELAY 220 /* ms */
+#include <linux/iio/imu/adis.h>
-#define ADIS16220_READ_REG(a) a
-#define ADIS16220_WRITE_REG(a) ((a) | 0x80)
+#define ADIS16220_STARTUP_DELAY 220 /* ms */
/* Flash memory write count */
#define ADIS16220_FLASH_CNT 0x00
#define ADIS16220_DIAG_STAT_FLASH_CHK (1<<6)
#define ADIS16220_DIAG_STAT_SELF_TEST (1<<5)
/* Capture period violation/interruption */
-#define ADIS16220_DIAG_STAT_VIOLATION (1<<4)
+#define ADIS16220_DIAG_STAT_VIOLATION_BIT 4
/* SPI communications failure */
-#define ADIS16220_DIAG_STAT_SPI_FAIL (1<<3)
+#define ADIS16220_DIAG_STAT_SPI_FAIL_BIT 3
/* Flash update failure */
-#define ADIS16220_DIAG_STAT_FLASH_UPT (1<<2)
+#define ADIS16220_DIAG_STAT_FLASH_UPT_BIT 2
/* Power supply above 3.625 V */
-#define ADIS16220_DIAG_STAT_POWER_HIGH (1<<1)
+#define ADIS16220_DIAG_STAT_POWER_HIGH_BIT 1
/* Power supply below 3.15 V */
-#define ADIS16220_DIAG_STAT_POWER_LOW (1<<0)
+#define ADIS16220_DIAG_STAT_POWER_LOW_BIT 0
/* GLOB_CMD */
#define ADIS16220_GLOB_CMD_SW_RESET (1<<7)
/**
* struct adis16220_state - device instance specific data
- * @us: actual spi_device
+ * @adis: adis device
* @tx: transmit buffer
* @rx: receive buffer
* @buf_lock: mutex to protect tx and rx
**/
struct adis16220_state {
- struct spi_device *us;
+ struct adis adis;
+
struct mutex buf_lock;
u8 tx[ADIS16220_MAX_TX] ____cacheline_aligned;
u8 rx[ADIS16220_MAX_RX];
#include "adis16220.h"
-/**
- * adis16220_spi_write_reg_8() - write single byte to a register
- * @indio_dev: iio device associated with child of actual device
- * @reg_address: the address of the register to be written
- * @val: the value to write
- **/
-static int adis16220_spi_write_reg_8(struct iio_dev *indio_dev,
- u8 reg_address,
- u8 val)
-{
- int ret;
- struct adis16220_state *st = iio_priv(indio_dev);
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = ADIS16220_WRITE_REG(reg_address);
- st->tx[1] = val;
-
- ret = spi_write(st->us, st->tx, 2);
- mutex_unlock(&st->buf_lock);
-
- return ret;
-}
-
-/**
- * adis16220_spi_write_reg_16() - write 2 bytes to a pair of registers
- * @indio_dev: iio device associated with child of actual device
- * @reg_address: the address of the lower of the two registers. Second register
- * is assumed to have address one greater.
- * @val: value to be written
- **/
-static int adis16220_spi_write_reg_16(struct iio_dev *indio_dev,
- u8 lower_reg_address,
- u16 value)
-{
- int ret;
- struct spi_message msg;
- struct adis16220_state *st = iio_priv(indio_dev);
- struct spi_transfer xfers[] = {
- {
- .tx_buf = st->tx,
- .bits_per_word = 8,
- .len = 2,
- .cs_change = 1,
- .delay_usecs = 35,
- }, {
- .tx_buf = st->tx + 2,
- .bits_per_word = 8,
- .len = 2,
- .delay_usecs = 35,
- },
- };
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = ADIS16220_WRITE_REG(lower_reg_address);
- st->tx[1] = value & 0xFF;
- st->tx[2] = ADIS16220_WRITE_REG(lower_reg_address + 1);
- st->tx[3] = (value >> 8) & 0xFF;
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfers[0], &msg);
- spi_message_add_tail(&xfers[1], &msg);
- ret = spi_sync(st->us, &msg);
- mutex_unlock(&st->buf_lock);
-
- return ret;
-}
-
-/**
- * adis16220_spi_read_reg_16() - read 2 bytes from a 16-bit register
- * @indio_dev: iio device associated with child of actual device
- * @reg_address: the address of the lower of the two registers. Second register
- * is assumed to have address one greater.
- * @val: somewhere to pass back the value read
- **/
-static int adis16220_spi_read_reg_16(struct iio_dev *indio_dev,
- u8 lower_reg_address,
- u16 *val)
-{
- struct spi_message msg;
- struct adis16220_state *st = iio_priv(indio_dev);
- int ret;
- struct spi_transfer xfers[] = {
- {
- .tx_buf = st->tx,
- .bits_per_word = 8,
- .len = 2,
- .cs_change = 1,
- .delay_usecs = 35,
- }, {
- .rx_buf = st->rx,
- .bits_per_word = 8,
- .len = 2,
- .cs_change = 1,
- .delay_usecs = 35,
- },
- };
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = ADIS16220_READ_REG(lower_reg_address);
- st->tx[1] = 0;
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfers[0], &msg);
- spi_message_add_tail(&xfers[1], &msg);
- ret = spi_sync(st->us, &msg);
- if (ret) {
- dev_err(&st->us->dev,
- "problem when reading 16 bit register 0x%02X",
- lower_reg_address);
- goto error_ret;
- }
- *val = (st->rx[0] << 8) | st->rx[1];
-
-error_ret:
- mutex_unlock(&st->buf_lock);
- return ret;
-}
-
static ssize_t adis16220_read_16bit(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+ struct adis16220_state *st = iio_priv(indio_dev);
ssize_t ret;
s16 val = 0;
/* Take the iio_dev status lock */
mutex_lock(&indio_dev->mlock);
- ret = adis16220_spi_read_reg_16(indio_dev, this_attr->address,
+ ret = adis_read_reg_16(&st->adis, this_attr->address,
(u16 *)&val);
mutex_unlock(&indio_dev->mlock);
if (ret)
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
+ struct adis16220_state *st = iio_priv(indio_dev);
int ret;
u16 val;
ret = kstrtou16(buf, 10, &val);
if (ret)
goto error_ret;
- ret = adis16220_spi_write_reg_16(indio_dev, this_attr->address, val);
+ ret = adis_write_reg_16(&st->adis, this_attr->address, val);
error_ret:
return ret ? ret : len;
static int adis16220_capture(struct iio_dev *indio_dev)
{
+ struct adis16220_state *st = iio_priv(indio_dev);
int ret;
- ret = adis16220_spi_write_reg_16(indio_dev,
- ADIS16220_GLOB_CMD,
- 0xBF08); /* initiates a manual data capture */
+
+ /* initiates a manual data capture */
+ ret = adis_write_reg_16(&st->adis, ADIS16220_GLOB_CMD, 0xBF08);
if (ret)
dev_err(&indio_dev->dev, "problem beginning capture");
return ret;
}
-static int adis16220_reset(struct iio_dev *indio_dev)
-{
- int ret;
- ret = adis16220_spi_write_reg_8(indio_dev,
- ADIS16220_GLOB_CMD,
- ADIS16220_GLOB_CMD_SW_RESET);
- if (ret)
- dev_err(&indio_dev->dev, "problem resetting device");
-
- return ret;
-}
-
static ssize_t adis16220_write_capture(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t len)
return len;
}
-static int adis16220_check_status(struct iio_dev *indio_dev)
-{
- u16 status;
- int ret;
-
- ret = adis16220_spi_read_reg_16(indio_dev, ADIS16220_DIAG_STAT,
- &status);
-
- if (ret < 0) {
- dev_err(&indio_dev->dev, "Reading status failed\n");
- goto error_ret;
- }
- ret = status & 0x7F;
-
- if (status & ADIS16220_DIAG_STAT_VIOLATION)
- dev_err(&indio_dev->dev,
- "Capture period violation/interruption\n");
- if (status & ADIS16220_DIAG_STAT_SPI_FAIL)
- dev_err(&indio_dev->dev, "SPI failure\n");
- if (status & ADIS16220_DIAG_STAT_FLASH_UPT)
- dev_err(&indio_dev->dev, "Flash update failed\n");
- if (status & ADIS16220_DIAG_STAT_POWER_HIGH)
- dev_err(&indio_dev->dev, "Power supply above 3.625V\n");
- if (status & ADIS16220_DIAG_STAT_POWER_LOW)
- dev_err(&indio_dev->dev, "Power supply below 3.15V\n");
-
-error_ret:
- return ret;
-}
-
-static int adis16220_self_test(struct iio_dev *indio_dev)
-{
- int ret;
- ret = adis16220_spi_write_reg_16(indio_dev,
- ADIS16220_MSC_CTRL,
- ADIS16220_MSC_CTRL_SELF_TEST_EN);
- if (ret) {
- dev_err(&indio_dev->dev, "problem starting self test");
- goto err_ret;
- }
-
- adis16220_check_status(indio_dev);
-
-err_ret:
- return ret;
-}
-
-static int adis16220_initial_setup(struct iio_dev *indio_dev)
-{
- int ret;
-
- /* Do self test */
- ret = adis16220_self_test(indio_dev);
- if (ret) {
- dev_err(&indio_dev->dev, "self test failure");
- goto err_ret;
- }
-
- /* Read status register to check the result */
- ret = adis16220_check_status(indio_dev);
- if (ret) {
- adis16220_reset(indio_dev);
- dev_err(&indio_dev->dev, "device not playing ball -> reset");
- msleep(ADIS16220_STARTUP_DELAY);
- ret = adis16220_check_status(indio_dev);
- if (ret) {
- dev_err(&indio_dev->dev, "giving up");
- goto err_ret;
- }
- }
-
-err_ret:
- return ret;
-}
-
static ssize_t adis16220_capture_buffer_read(struct iio_dev *indio_dev,
char *buf,
loff_t off,
count = ADIS16220_CAPTURE_SIZE - off;
/* write the begin position of capture buffer */
- ret = adis16220_spi_write_reg_16(indio_dev,
+ ret = adis_write_reg_16(&st->adis,
ADIS16220_CAPT_PNTR,
off > 1);
if (ret)
/* read count/2 values from capture buffer */
mutex_lock(&st->buf_lock);
+
for (i = 0; i < count; i += 2) {
- st->tx[i] = ADIS16220_READ_REG(addr);
+ st->tx[i] = ADIS_READ_REG(addr);
st->tx[i + 1] = 0;
}
xfers[1].len = count;
spi_message_init(&msg);
spi_message_add_tail(&xfers[0], &msg);
spi_message_add_tail(&xfers[1], &msg);
- ret = spi_sync(st->us, &msg);
+ ret = spi_sync(st->adis.spi, &msg);
if (ret) {
mutex_unlock(&st->buf_lock);
int *val, int *val2,
long mask)
{
+ struct adis16220_state *st = iio_priv(indio_dev);
+ const struct adis16220_address_spec *addr;
int ret = -EINVAL;
int addrind = 0;
u16 uval;
default:
return -EINVAL;
}
- if (adis16220_addresses[chan->address][addrind].sign) {
- ret = adis16220_spi_read_reg_16(indio_dev,
- adis16220_addresses[chan
- ->address]
- [addrind].addr,
- &sval);
+ addr = &adis16220_addresses[chan->address][addrind];
+ if (addr->sign) {
+ ret = adis_read_reg_16(&st->adis, addr->addr, &sval);
if (ret)
return ret;
- bits = adis16220_addresses[chan->address][addrind].bits;
+ bits = addr->bits;
sval &= (1 << bits) - 1;
sval = (s16)(sval << (16 - bits)) >> (16 - bits);
*val = sval;
return IIO_VAL_INT;
} else {
- ret = adis16220_spi_read_reg_16(indio_dev,
- adis16220_addresses[chan
- ->address]
- [addrind].addr,
- &uval);
+ ret = adis_read_reg_16(&st->adis, addr->addr, &uval);
if (ret)
return ret;
- bits = adis16220_addresses[chan->address][addrind].bits;
+ bits = addr->bits;
uval &= (1 << bits) - 1;
*val = uval;
return IIO_VAL_INT;
.read_raw = &adis16220_read_raw,
};
+static const char * const adis16220_status_error_msgs[] = {
+ [ADIS16220_DIAG_STAT_VIOLATION_BIT] = "Capture period violation/interruption",
+ [ADIS16220_DIAG_STAT_SPI_FAIL_BIT] = "SPI failure",
+ [ADIS16220_DIAG_STAT_FLASH_UPT_BIT] = "Flash update failed",
+ [ADIS16220_DIAG_STAT_POWER_HIGH_BIT] = "Power supply above 3.625V",
+ [ADIS16220_DIAG_STAT_POWER_LOW_BIT] = "Power supply below 3.15V",
+};
+
+static const struct adis_data adis16220_data = {
+ .read_delay = 35,
+ .write_delay = 35,
+ .msc_ctrl_reg = ADIS16220_MSC_CTRL,
+ .glob_cmd_reg = ADIS16220_GLOB_CMD,
+ .diag_stat_reg = ADIS16220_DIAG_STAT,
+
+ .self_test_mask = ADIS16220_MSC_CTRL_SELF_TEST_EN,
+ .startup_delay = ADIS16220_STARTUP_DELAY,
+
+ .status_error_msgs = adis16220_status_error_msgs,
+ .status_error_mask = BIT(ADIS16220_DIAG_STAT_VIOLATION_BIT) |
+ BIT(ADIS16220_DIAG_STAT_SPI_FAIL_BIT) |
+ BIT(ADIS16220_DIAG_STAT_FLASH_UPT_BIT) |
+ BIT(ADIS16220_DIAG_STAT_POWER_HIGH_BIT) |
+ BIT(ADIS16220_DIAG_STAT_POWER_LOW_BIT),
+};
+
static int __devinit adis16220_probe(struct spi_device *spi)
{
int ret;
/* this is only used for removal purposes */
spi_set_drvdata(spi, indio_dev);
- st->us = spi;
- mutex_init(&st->buf_lock);
-
indio_dev->name = spi->dev.driver->name;
indio_dev->dev.parent = &spi->dev;
indio_dev->info = &adis16220_info;
if (ret)
goto error_rm_adc1_bin;
+ ret = adis_init(&st->adis, indio_dev, spi, &adis16220_data);
+ if (ret)
+ goto error_rm_adc2_bin;
/* Get the device into a sane initial state */
- ret = adis16220_initial_setup(indio_dev);
+ ret = adis_initial_startup(&st->adis);
if (ret)
goto error_rm_adc2_bin;
return 0;
#define ADIS16240_STARTUP_DELAY 220 /* ms */
-#define ADIS16240_READ_REG(a) a
-#define ADIS16240_WRITE_REG(a) ((a) | 0x80)
-
/* Flash memory write count */
#define ADIS16240_FLASH_CNT 0x00
/* Output, power supply */
/* System command */
#define ADIS16240_GLOB_CMD 0x4A
-#define ADIS16240_OUTPUTS 6
-
/* MSC_CTRL */
/* Enables sum-of-squares output (XYZPEAK_OUT) */
#define ADIS16240_MSC_CTRL_XYZPEAK_OUT_EN (1 << 15)
/* Flash test, checksum flag: 1 = mismatch, 0 = match */
#define ADIS16240_DIAG_STAT_CHKSUM (1<<6)
/* Power-on, self-test flag: 1 = failure, 0 = pass */
-#define ADIS16240_DIAG_STAT_PWRON_FAIL (1<<5)
+#define ADIS16240_DIAG_STAT_PWRON_FAIL_BIT 5
/* Power-on self-test: 1 = in-progress, 0 = complete */
#define ADIS16240_DIAG_STAT_PWRON_BUSY (1<<4)
/* SPI communications failure */
-#define ADIS16240_DIAG_STAT_SPI_FAIL (1<<3)
+#define ADIS16240_DIAG_STAT_SPI_FAIL_BIT 3
/* Flash update failure */
-#define ADIS16240_DIAG_STAT_FLASH_UPT (1<<2)
+#define ADIS16240_DIAG_STAT_FLASH_UPT_BIT 2
/* Power supply above 3.625 V */
-#define ADIS16240_DIAG_STAT_POWER_HIGH (1<<1)
+#define ADIS16240_DIAG_STAT_POWER_HIGH_BIT 1
/* Power supply below 3.15 V */
-#define ADIS16240_DIAG_STAT_POWER_LOW (1<<0)
+#define ADIS16240_DIAG_STAT_POWER_LOW_BIT 0
/* GLOB_CMD */
#define ADIS16240_GLOB_CMD_RESUME (1<<8)
#define ADIS16240_ERROR_ACTIVE (1<<14)
-#define ADIS16240_MAX_TX 24
-#define ADIS16240_MAX_RX 24
-
-/**
- * struct adis16240_state - device instance specific data
- * @us: actual spi_device
- * @trig: data ready trigger registered with iio
- * @tx: transmit buffer
- * @rx: receive buffer
- * @buf_lock: mutex to protect tx and rx
- **/
-struct adis16240_state {
- struct spi_device *us;
- struct iio_trigger *trig;
- struct mutex buf_lock;
- u8 tx[ADIS16240_MAX_TX] ____cacheline_aligned;
- u8 rx[ADIS16240_MAX_RX];
-};
-
-int adis16240_set_irq(struct iio_dev *indio_dev, bool enable);
-
/* At the moment triggers are only used for ring buffer
* filling. This may change!
*/
-#define ADIS16240_SCAN_SUPPLY 0
-#define ADIS16240_SCAN_ACC_X 1
-#define ADIS16240_SCAN_ACC_Y 2
-#define ADIS16240_SCAN_ACC_Z 3
+#define ADIS16240_SCAN_ACC_X 0
+#define ADIS16240_SCAN_ACC_Y 1
+#define ADIS16240_SCAN_ACC_Z 2
+#define ADIS16240_SCAN_SUPPLY 3
#define ADIS16240_SCAN_AUX_ADC 4
#define ADIS16240_SCAN_TEMP 5
-#ifdef CONFIG_IIO_BUFFER
-void adis16240_remove_trigger(struct iio_dev *indio_dev);
-int adis16240_probe_trigger(struct iio_dev *indio_dev);
-
-ssize_t adis16240_read_data_from_ring(struct device *dev,
- struct device_attribute *attr,
- char *buf);
-
-
-int adis16240_configure_ring(struct iio_dev *indio_dev);
-void adis16240_unconfigure_ring(struct iio_dev *indio_dev);
-
-#else /* CONFIG_IIO_BUFFER */
-
-static inline void adis16240_remove_trigger(struct iio_dev *indio_dev)
-{
-}
-
-static inline int adis16240_probe_trigger(struct iio_dev *indio_dev)
-{
- return 0;
-}
-
-static inline ssize_t
-adis16240_read_data_from_ring(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return 0;
-}
-
-static int adis16240_configure_ring(struct iio_dev *indio_dev)
-{
- return 0;
-}
-
-static inline void adis16240_unconfigure_ring(struct iio_dev *indio_dev)
-{
-}
-
-#endif /* CONFIG_IIO_BUFFER */
#endif /* SPI_ADIS16240_H_ */
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/iio/buffer.h>
+#include <linux/iio/imu/adis.h>
#include "adis16240.h"
-static int adis16240_check_status(struct iio_dev *indio_dev);
-
-/**
- * adis16240_spi_write_reg_8() - write single byte to a register
- * @indio_dev: iio_dev associated with device
- * @reg_address: the address of the register to be written
- * @val: the value to write
- **/
-static int adis16240_spi_write_reg_8(struct iio_dev *indio_dev,
- u8 reg_address,
- u8 val)
-{
- int ret;
- struct adis16240_state *st = iio_priv(indio_dev);
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = ADIS16240_WRITE_REG(reg_address);
- st->tx[1] = val;
-
- ret = spi_write(st->us, st->tx, 2);
- mutex_unlock(&st->buf_lock);
-
- return ret;
-}
-
-/**
- * adis16240_spi_write_reg_16() - write 2 bytes to a pair of registers
- * @indio_dev: iio_dev for this device
- * @reg_address: the address of the lower of the two registers. Second register
- * is assumed to have address one greater.
- * @val: value to be written
- **/
-static int adis16240_spi_write_reg_16(struct iio_dev *indio_dev,
- u8 lower_reg_address,
- u16 value)
-{
- int ret;
- struct spi_message msg;
- struct adis16240_state *st = iio_priv(indio_dev);
- struct spi_transfer xfers[] = {
- {
- .tx_buf = st->tx,
- .bits_per_word = 8,
- .len = 2,
- .cs_change = 1,
- .delay_usecs = 35,
- }, {
- .tx_buf = st->tx + 2,
- .bits_per_word = 8,
- .len = 2,
- .delay_usecs = 35,
- },
- };
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = ADIS16240_WRITE_REG(lower_reg_address);
- st->tx[1] = value & 0xFF;
- st->tx[2] = ADIS16240_WRITE_REG(lower_reg_address + 1);
- st->tx[3] = (value >> 8) & 0xFF;
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfers[0], &msg);
- spi_message_add_tail(&xfers[1], &msg);
- ret = spi_sync(st->us, &msg);
- mutex_unlock(&st->buf_lock);
-
- return ret;
-}
-
-/**
- * adis16240_spi_read_reg_16() - read 2 bytes from a 16-bit register
- * @indio_dev: iio_dev for this device
- * @reg_address: the address of the lower of the two registers. Second register
- * is assumed to have address one greater.
- * @val: somewhere to pass back the value read
- **/
-static int adis16240_spi_read_reg_16(struct iio_dev *indio_dev,
- u8 lower_reg_address,
- u16 *val)
-{
- struct spi_message msg;
- struct adis16240_state *st = iio_priv(indio_dev);
- int ret;
- struct spi_transfer xfers[] = {
- {
- .tx_buf = st->tx,
- .bits_per_word = 8,
- .len = 2,
- .cs_change = 1,
- .delay_usecs = 35,
- }, {
- .rx_buf = st->rx,
- .bits_per_word = 8,
- .len = 2,
- .cs_change = 1,
- .delay_usecs = 35,
- },
- };
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = ADIS16240_READ_REG(lower_reg_address);
- st->tx[1] = 0;
- st->tx[2] = 0;
- st->tx[3] = 0;
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfers[0], &msg);
- spi_message_add_tail(&xfers[1], &msg);
- ret = spi_sync(st->us, &msg);
- if (ret) {
- dev_err(&st->us->dev,
- "problem when reading 16 bit register 0x%02X",
- lower_reg_address);
- goto error_ret;
- }
- *val = (st->rx[0] << 8) | st->rx[1];
-
-error_ret:
- mutex_unlock(&st->buf_lock);
- return ret;
-}
-
static ssize_t adis16240_spi_read_signed(struct device *dev,
struct device_attribute *attr,
char *buf,
unsigned bits)
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+ struct adis *st = iio_priv(indio_dev);
int ret;
s16 val = 0;
unsigned shift = 16 - bits;
struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
- ret = adis16240_spi_read_reg_16(indio_dev,
+ ret = adis_read_reg_16(st,
this_attr->address, (u16 *)&val);
if (ret)
return ret;
if (val & ADIS16240_ERROR_ACTIVE)
- adis16240_check_status(indio_dev);
+ adis_check_status(st);
val = ((s16)(val << shift) >> shift);
return sprintf(buf, "%d\n", val);
return ret;
}
-static int adis16240_reset(struct iio_dev *indio_dev)
-{
- int ret;
- ret = adis16240_spi_write_reg_8(indio_dev,
- ADIS16240_GLOB_CMD,
- ADIS16240_GLOB_CMD_SW_RESET);
- if (ret)
- dev_err(&indio_dev->dev, "problem resetting device");
-
- return ret;
-}
-
-int adis16240_set_irq(struct iio_dev *indio_dev, bool enable)
-{
- int ret = 0;
- u16 msc;
-
- ret = adis16240_spi_read_reg_16(indio_dev,
- ADIS16240_MSC_CTRL, &msc);
- if (ret)
- goto error_ret;
-
- msc |= ADIS16240_MSC_CTRL_ACTIVE_HIGH;
- msc &= ~ADIS16240_MSC_CTRL_DATA_RDY_DIO2;
- if (enable)
- msc |= ADIS16240_MSC_CTRL_DATA_RDY_EN;
- else
- msc &= ~ADIS16240_MSC_CTRL_DATA_RDY_EN;
-
- ret = adis16240_spi_write_reg_16(indio_dev,
- ADIS16240_MSC_CTRL, msc);
-
-error_ret:
- return ret;
-}
-
-static int adis16240_self_test(struct iio_dev *indio_dev)
-{
- int ret;
- ret = adis16240_spi_write_reg_16(indio_dev,
- ADIS16240_MSC_CTRL,
- ADIS16240_MSC_CTRL_SELF_TEST_EN);
- if (ret) {
- dev_err(&indio_dev->dev, "problem starting self test");
- goto err_ret;
- }
-
- msleep(ADIS16240_STARTUP_DELAY);
-
- adis16240_check_status(indio_dev);
-
-err_ret:
- return ret;
-}
-
-static int adis16240_check_status(struct iio_dev *indio_dev)
-{
- u16 status;
- int ret;
- struct device *dev = &indio_dev->dev;
-
- ret = adis16240_spi_read_reg_16(indio_dev,
- ADIS16240_DIAG_STAT, &status);
-
- if (ret < 0) {
- dev_err(dev, "Reading status failed\n");
- goto error_ret;
- }
-
- ret = status & 0x2F;
- if (status & ADIS16240_DIAG_STAT_PWRON_FAIL)
- dev_err(dev, "Power-on, self-test fail\n");
- if (status & ADIS16240_DIAG_STAT_SPI_FAIL)
- dev_err(dev, "SPI failure\n");
- if (status & ADIS16240_DIAG_STAT_FLASH_UPT)
- dev_err(dev, "Flash update failed\n");
- if (status & ADIS16240_DIAG_STAT_POWER_HIGH)
- dev_err(dev, "Power supply above 3.625V\n");
- if (status & ADIS16240_DIAG_STAT_POWER_LOW)
- dev_err(dev, "Power supply below 2.225V\n");
-
-error_ret:
- return ret;
-}
-
-static int adis16240_initial_setup(struct iio_dev *indio_dev)
-{
- int ret;
- struct device *dev = &indio_dev->dev;
-
- /* Disable IRQ */
- ret = adis16240_set_irq(indio_dev, false);
- if (ret) {
- dev_err(dev, "disable irq failed");
- goto err_ret;
- }
-
- /* Do self test */
- ret = adis16240_self_test(indio_dev);
- if (ret) {
- dev_err(dev, "self test failure");
- goto err_ret;
- }
-
- /* Read status register to check the result */
- ret = adis16240_check_status(indio_dev);
- if (ret) {
- adis16240_reset(indio_dev);
- dev_err(dev, "device not playing ball -> reset");
- msleep(ADIS16240_STARTUP_DELAY);
- ret = adis16240_check_status(indio_dev);
- if (ret) {
- dev_err(dev, "giving up");
- goto err_ret;
- }
- }
-
-err_ret:
- return ret;
-}
-
static IIO_DEVICE_ATTR(in_accel_xyz_squared_peak_raw, S_IRUGO,
adis16240_read_12bit_signed, NULL,
ADIS16240_XYZPEAK_OUT);
static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("4096");
-enum adis16240_chan {
- in_supply,
- in_aux,
- accel_x,
- accel_y,
- accel_z,
- temp,
-};
-
-static const u8 adis16240_addresses[6][3] = {
- [in_supply] = { ADIS16240_SUPPLY_OUT },
- [in_aux] = { ADIS16240_AUX_ADC },
- [accel_x] = { ADIS16240_XACCL_OUT, ADIS16240_XACCL_OFF,
- ADIS16240_XPEAK_OUT },
- [accel_y] = { ADIS16240_YACCL_OUT, ADIS16240_YACCL_OFF,
- ADIS16240_YPEAK_OUT },
- [accel_z] = { ADIS16240_ZACCL_OUT, ADIS16240_ZACCL_OFF,
- ADIS16240_ZPEAK_OUT },
- [temp] = { ADIS16240_TEMP_OUT },
+static const u8 adis16240_addresses[][2] = {
+ [ADIS16240_SCAN_ACC_X] = { ADIS16240_XACCL_OFF, ADIS16240_XPEAK_OUT },
+ [ADIS16240_SCAN_ACC_Y] = { ADIS16240_YACCL_OFF, ADIS16240_YPEAK_OUT },
+ [ADIS16240_SCAN_ACC_Z] = { ADIS16240_ZACCL_OFF, ADIS16240_ZPEAK_OUT },
};
static int adis16240_read_raw(struct iio_dev *indio_dev,
int *val, int *val2,
long mask)
{
+ struct adis *st = iio_priv(indio_dev);
int ret;
int bits;
u8 addr;
switch (mask) {
case IIO_CHAN_INFO_RAW:
- mutex_lock(&indio_dev->mlock);
- addr = adis16240_addresses[chan->address][0];
- ret = adis16240_spi_read_reg_16(indio_dev, addr, &val16);
- if (ret) {
- mutex_unlock(&indio_dev->mlock);
- return ret;
- }
-
- if (val16 & ADIS16240_ERROR_ACTIVE) {
- ret = adis16240_check_status(indio_dev);
- if (ret) {
- mutex_unlock(&indio_dev->mlock);
- return ret;
- }
- }
- val16 = val16 & ((1 << chan->scan_type.realbits) - 1);
- if (chan->scan_type.sign == 's')
- val16 = (s16)(val16 <<
- (16 - chan->scan_type.realbits)) >>
- (16 - chan->scan_type.realbits);
- *val = val16;
- mutex_unlock(&indio_dev->mlock);
- return IIO_VAL_INT;
+ return adis_single_conversion(indio_dev, chan,
+ ADIS16240_ERROR_ACTIVE, val);
case IIO_CHAN_INFO_SCALE:
switch (chan->type) {
case IIO_VOLTAGE:
case IIO_CHAN_INFO_CALIBBIAS:
bits = 10;
mutex_lock(&indio_dev->mlock);
- addr = adis16240_addresses[chan->address][1];
- ret = adis16240_spi_read_reg_16(indio_dev, addr, &val16);
+ addr = adis16240_addresses[chan->scan_index][0];
+ ret = adis_read_reg_16(st, addr, &val16);
if (ret) {
mutex_unlock(&indio_dev->mlock);
return ret;
case IIO_CHAN_INFO_PEAK:
bits = 10;
mutex_lock(&indio_dev->mlock);
- addr = adis16240_addresses[chan->address][2];
- ret = adis16240_spi_read_reg_16(indio_dev, addr, &val16);
+ addr = adis16240_addresses[chan->scan_index][1];
+ ret = adis_read_reg_16(st, addr, &val16);
if (ret) {
mutex_unlock(&indio_dev->mlock);
return ret;
int val2,
long mask)
{
+ struct adis *st = iio_priv(indio_dev);
int bits = 10;
s16 val16;
u8 addr;
switch (mask) {
case IIO_CHAN_INFO_CALIBBIAS:
val16 = val & ((1 << bits) - 1);
- addr = adis16240_addresses[chan->address][1];
- return adis16240_spi_write_reg_16(indio_dev, addr, val16);
+ addr = adis16240_addresses[chan->scan_index][0];
+ return adis_write_reg_16(st, addr, val16);
}
return -EINVAL;
}
static const struct iio_chan_spec adis16240_channels[] = {
- {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 0,
- .extend_name = "supply",
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
- .address = in_supply,
- .scan_index = ADIS16240_SCAN_SUPPLY,
- .scan_type = {
- .sign = 'u',
- .realbits = 10,
- .storagebits = 16,
- },
- }, {
- .type = IIO_VOLTAGE,
- .indexed = 1,
- .channel = 1,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
- .address = in_aux,
- .scan_index = ADIS16240_SCAN_AUX_ADC,
- .scan_type = {
- .sign = 'u',
- .realbits = 10,
- .storagebits = 16,
- },
- }, {
- .type = IIO_ACCEL,
- .modified = 1,
- .channel2 = IIO_MOD_X,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SHARED_BIT |
+ ADIS_SUPPLY_CHAN(ADIS16240_SUPPLY_OUT, ADIS16240_SCAN_SUPPLY, 10),
+ ADIS_AUX_ADC_CHAN(ADIS16240_AUX_ADC, ADIS16240_SCAN_AUX_ADC, 10),
+ ADIS_ACCEL_CHAN(X, ADIS16240_XACCL_OUT, ADIS16240_SCAN_ACC_X,
IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
- IIO_CHAN_INFO_PEAK_SEPARATE_BIT,
- .address = accel_x,
- .scan_index = ADIS16240_SCAN_ACC_X,
- .scan_type = {
- .sign = 's',
- .realbits = 10,
- .storagebits = 16,
- },
- }, {
- .type = IIO_ACCEL,
- .modified = 1,
- .channel2 = IIO_MOD_Y,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SHARED_BIT |
+ IIO_CHAN_INFO_PEAK_SEPARATE_BIT, 10),
+ ADIS_ACCEL_CHAN(Y, ADIS16240_YACCL_OUT, ADIS16240_SCAN_ACC_Y,
IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
- IIO_CHAN_INFO_PEAK_SEPARATE_BIT,
- .address = accel_y,
- .scan_index = ADIS16240_SCAN_ACC_Y,
- .scan_type = {
- .sign = 's',
- .realbits = 10,
- .storagebits = 16,
- },
- }, {
- .type = IIO_ACCEL,
- .modified = 1,
- .channel2 = IIO_MOD_Z,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SHARED_BIT |
+ IIO_CHAN_INFO_PEAK_SEPARATE_BIT, 10),
+ ADIS_ACCEL_CHAN(Z, ADIS16240_ZACCL_OUT, ADIS16240_SCAN_ACC_Z,
IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT |
- IIO_CHAN_INFO_PEAK_SEPARATE_BIT,
- .address = accel_z,
- .scan_index = ADIS16240_SCAN_ACC_Z,
- .scan_type = {
- .sign = 's',
- .realbits = 10,
- .storagebits = 16,
- },
- }, {
- .type = IIO_TEMP,
- .indexed = 1,
- .channel = 0,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
- .address = temp,
- .scan_index = ADIS16240_SCAN_TEMP,
- .scan_type = {
- .sign = 'u',
- .realbits = 10,
- .storagebits = 16,
- },
- },
+ IIO_CHAN_INFO_PEAK_SEPARATE_BIT, 10),
+ ADIS_TEMP_CHAN(ADIS16240_TEMP_OUT, ADIS16240_SCAN_TEMP, 10),
IIO_CHAN_SOFT_TIMESTAMP(6)
};
.attrs = &adis16240_attribute_group,
.read_raw = &adis16240_read_raw,
.write_raw = &adis16240_write_raw,
+ .update_scan_mode = adis_update_scan_mode,
.driver_module = THIS_MODULE,
};
+static const char * const adis16240_status_error_msgs[] = {
+ [ADIS16240_DIAG_STAT_PWRON_FAIL_BIT] = "Power on, self-test failed",
+ [ADIS16240_DIAG_STAT_SPI_FAIL_BIT] = "SPI failure",
+ [ADIS16240_DIAG_STAT_FLASH_UPT_BIT] = "Flash update failed",
+ [ADIS16240_DIAG_STAT_POWER_HIGH_BIT] = "Power supply above 3.625V",
+ [ADIS16240_DIAG_STAT_POWER_LOW_BIT] = "Power supply below 2.225V",
+};
+
+static const struct adis_data adis16240_data = {
+ .write_delay = 35,
+ .read_delay = 35,
+ .msc_ctrl_reg = ADIS16240_MSC_CTRL,
+ .glob_cmd_reg = ADIS16240_GLOB_CMD,
+ .diag_stat_reg = ADIS16240_DIAG_STAT,
+
+ .self_test_mask = ADIS16240_MSC_CTRL_SELF_TEST_EN,
+ .startup_delay = ADIS16240_STARTUP_DELAY,
+
+ .status_error_msgs = adis16240_status_error_msgs,
+ .status_error_mask = BIT(ADIS16240_DIAG_STAT_PWRON_FAIL_BIT) |
+ BIT(ADIS16240_DIAG_STAT_SPI_FAIL_BIT) |
+ BIT(ADIS16240_DIAG_STAT_FLASH_UPT_BIT) |
+ BIT(ADIS16240_DIAG_STAT_POWER_HIGH_BIT) |
+ BIT(ADIS16240_DIAG_STAT_POWER_LOW_BIT),
+};
+
static int __devinit adis16240_probe(struct spi_device *spi)
{
int ret;
- struct adis16240_state *st;
+ struct adis *st;
struct iio_dev *indio_dev;
/* setup the industrialio driver allocated elements */
/* this is only used for removal purposes */
spi_set_drvdata(spi, indio_dev);
- st->us = spi;
- mutex_init(&st->buf_lock);
-
indio_dev->name = spi->dev.driver->name;
indio_dev->dev.parent = &spi->dev;
indio_dev->info = &adis16240_info;
indio_dev->num_channels = ARRAY_SIZE(adis16240_channels);
indio_dev->modes = INDIO_DIRECT_MODE;
- ret = adis16240_configure_ring(indio_dev);
+ ret = adis_init(st, indio_dev, spi, &adis16240_data);
+ if (ret)
+ goto error_free_dev;
+ ret = adis_setup_buffer_and_trigger(st, indio_dev, NULL);
if (ret)
goto error_free_dev;
-
- ret = iio_buffer_register(indio_dev,
- adis16240_channels,
- ARRAY_SIZE(adis16240_channels));
- if (ret) {
- printk(KERN_ERR "failed to initialize the ring\n");
- goto error_unreg_ring_funcs;
- }
-
- if (spi->irq) {
- ret = adis16240_probe_trigger(indio_dev);
- if (ret)
- goto error_uninitialize_ring;
- }
/* Get the device into a sane initial state */
- ret = adis16240_initial_setup(indio_dev);
+ ret = adis_initial_startup(st);
if (ret)
- goto error_remove_trigger;
+ goto error_cleanup_buffer_trigger;
ret = iio_device_register(indio_dev);
if (ret)
- goto error_remove_trigger;
+ goto error_cleanup_buffer_trigger;
return 0;
-error_remove_trigger:
- adis16240_remove_trigger(indio_dev);
-error_uninitialize_ring:
- iio_buffer_unregister(indio_dev);
-error_unreg_ring_funcs:
- adis16240_unconfigure_ring(indio_dev);
+error_cleanup_buffer_trigger:
+ adis_cleanup_buffer_and_trigger(st, indio_dev);
error_free_dev:
iio_device_free(indio_dev);
error_ret:
static int __devexit adis16240_remove(struct spi_device *spi)
{
-
struct iio_dev *indio_dev = spi_get_drvdata(spi);
+ struct adis *st = iio_priv(indio_dev);
iio_device_unregister(indio_dev);
- adis16240_remove_trigger(indio_dev);
- iio_buffer_unregister(indio_dev);
- adis16240_unconfigure_ring(indio_dev);
+ adis_cleanup_buffer_and_trigger(st, indio_dev);
iio_device_free(indio_dev);
return 0;
+++ /dev/null
-#include <linux/export.h>
-#include <linux/interrupt.h>
-#include <linux/mutex.h>
-#include <linux/kernel.h>
-#include <linux/spi/spi.h>
-#include <linux/slab.h>
-
-#include <linux/iio/iio.h>
-#include "../ring_sw.h"
-#include <linux/iio/trigger_consumer.h>
-#include "adis16240.h"
-
-/**
- * adis16240_read_ring_data() read data registers which will be placed into ring
- * @indio_dev: the IIO device
- * @rx: somewhere to pass back the value read
- **/
-static int adis16240_read_ring_data(struct iio_dev *indio_dev, u8 *rx)
-{
- struct spi_message msg;
- struct adis16240_state *st = iio_priv(indio_dev);
- struct spi_transfer xfers[ADIS16240_OUTPUTS + 1];
- int ret;
- int i;
-
- mutex_lock(&st->buf_lock);
-
- spi_message_init(&msg);
-
- memset(xfers, 0, sizeof(xfers));
- for (i = 0; i <= ADIS16240_OUTPUTS; i++) {
- xfers[i].bits_per_word = 8;
- xfers[i].cs_change = 1;
- xfers[i].len = 2;
- xfers[i].delay_usecs = 30;
- xfers[i].tx_buf = st->tx + 2 * i;
- st->tx[2 * i]
- = ADIS16240_READ_REG(ADIS16240_SUPPLY_OUT + 2 * i);
- st->tx[2 * i + 1] = 0;
- if (i >= 1)
- xfers[i].rx_buf = rx + 2 * (i - 1);
- spi_message_add_tail(&xfers[i], &msg);
- }
-
- ret = spi_sync(st->us, &msg);
- if (ret)
- dev_err(&st->us->dev, "problem when burst reading");
-
- mutex_unlock(&st->buf_lock);
-
- return ret;
-}
-
-static irqreturn_t adis16240_trigger_handler(int irq, void *p)
-{
- struct iio_poll_func *pf = p;
- struct iio_dev *indio_dev = pf->indio_dev;
- struct adis16240_state *st = iio_priv(indio_dev);
-
- int i = 0;
- s16 *data;
-
- data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
- if (data == NULL) {
- dev_err(&st->us->dev, "memory alloc failed in ring bh");
- goto done;
- }
-
- if (!bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength) &&
- adis16240_read_ring_data(indio_dev, st->rx) >= 0)
- for (; i < bitmap_weight(indio_dev->active_scan_mask,
- indio_dev->masklength); i++)
- data[i] = be16_to_cpup((__be16 *)&(st->rx[i*2]));
-
- /* Guaranteed to be aligned with 8 byte boundary */
- if (indio_dev->scan_timestamp)
- *((s64 *)(data + ((i + 3)/4)*4)) = pf->timestamp;
-
- iio_push_to_buffers(indio_dev, (u8 *)data);
-
- kfree(data);
-done:
- iio_trigger_notify_done(indio_dev->trig);
-
- return IRQ_HANDLED;
-}
-
-void adis16240_unconfigure_ring(struct iio_dev *indio_dev)
-{
- iio_dealloc_pollfunc(indio_dev->pollfunc);
- iio_sw_rb_free(indio_dev->buffer);
-}
-
-static const struct iio_buffer_setup_ops adis16240_ring_setup_ops = {
- .preenable = &iio_sw_buffer_preenable,
- .postenable = &iio_triggered_buffer_postenable,
- .predisable = &iio_triggered_buffer_predisable,
-};
-
-int adis16240_configure_ring(struct iio_dev *indio_dev)
-{
- int ret = 0;
- struct iio_buffer *ring;
-
- ring = iio_sw_rb_allocate(indio_dev);
- if (!ring) {
- ret = -ENOMEM;
- return ret;
- }
- indio_dev->buffer = ring;
- ring->scan_timestamp = true;
- indio_dev->setup_ops = &adis16240_ring_setup_ops;
-
- indio_dev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time,
- &adis16240_trigger_handler,
- IRQF_ONESHOT,
- indio_dev,
- "%s_consumer%d",
- indio_dev->name,
- indio_dev->id);
- if (indio_dev->pollfunc == NULL) {
- ret = -ENOMEM;
- goto error_iio_sw_rb_free;
- }
-
- indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
- return 0;
-
-error_iio_sw_rb_free:
- iio_sw_rb_free(indio_dev->buffer);
- return ret;
-}
+++ /dev/null
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/spi/spi.h>
-#include <linux/export.h>
-
-#include <linux/iio/iio.h>
-#include <linux/iio/trigger.h>
-#include "adis16240.h"
-
-/**
- * adis16240_data_rdy_trigger_set_state() set datardy interrupt state
- **/
-static int adis16240_data_rdy_trigger_set_state(struct iio_trigger *trig,
- bool state)
-{
- struct iio_dev *indio_dev = trig->private_data;
-
- dev_dbg(&indio_dev->dev, "%s (%d)\n", __func__, state);
- return adis16240_set_irq(indio_dev, state);
-}
-
-static const struct iio_trigger_ops adis16240_trigger_ops = {
- .owner = THIS_MODULE,
- .set_trigger_state = &adis16240_data_rdy_trigger_set_state,
-};
-
-int adis16240_probe_trigger(struct iio_dev *indio_dev)
-{
- int ret;
- struct adis16240_state *st = iio_priv(indio_dev);
-
- st->trig = iio_trigger_alloc("adis16240-dev%d", indio_dev->id);
- if (st->trig == NULL) {
- ret = -ENOMEM;
- goto error_ret;
- }
-
- ret = request_irq(st->us->irq,
- iio_trigger_generic_data_rdy_poll,
- IRQF_TRIGGER_RISING,
- "adis16240",
- st->trig);
- if (ret)
- goto error_free_trig;
-
- st->trig->dev.parent = &st->us->dev;
- st->trig->ops = &adis16240_trigger_ops;
- st->trig->private_data = indio_dev;
- ret = iio_trigger_register(st->trig);
-
- /* select default trigger */
- indio_dev->trig = st->trig;
- if (ret)
- goto error_free_irq;
-
- return 0;
-
-error_free_irq:
- free_irq(st->us->irq, st->trig);
-error_free_trig:
- iio_trigger_free(st->trig);
-error_ret:
- return ret;
-}
-
-void adis16240_remove_trigger(struct iio_dev *indio_dev)
-{
- struct adis16240_state *st = iio_priv(indio_dev);
-
- iio_trigger_unregister(st->trig);
- free_irq(st->us->irq, st->trig);
- iio_trigger_free(st->trig);
-}
Say yes here to build support for Analog Devices AD7291
8 Channel ADC with temperature sensor.
-config AD7298
- tristate "Analog Devices AD7298 ADC driver"
- depends on SPI
- select IIO_TRIGGERED_BUFFER if IIO_BUFFER
- help
- Say yes here to build support for Analog Devices AD7298
- 8 Channel ADC with temperature sensor.
-
- To compile this driver as a module, choose M here: the
- module will be called ad7298.
-
config AD7606
tristate "Analog Devices AD7606 ADC driver"
depends on GPIOLIB
ad799x-$(CONFIG_AD799X_RING_BUFFER) += ad799x_ring.o
obj-$(CONFIG_AD799X) += ad799x.o
-ad7298-y := ad7298_core.o
-ad7298-$(CONFIG_IIO_BUFFER) += ad7298_ring.o
-obj-$(CONFIG_AD7298) += ad7298.o
-
obj-$(CONFIG_AD7291) += ad7291.o
obj-$(CONFIG_AD7780) += ad7780.o
obj-$(CONFIG_AD7793) += ad7793.o
+++ /dev/null
-/*
- * AD7298 SPI ADC driver
- *
- * Copyright 2011 Analog Devices Inc.
- *
- * Licensed under the GPL-2.
- */
-
-#ifndef IIO_ADC_AD7298_H_
-#define IIO_ADC_AD7298_H_
-
-#define AD7298_WRITE (1 << 15) /* write to the control register */
-#define AD7298_REPEAT (1 << 14) /* repeated conversion enable */
-#define AD7298_CH(x) (1 << (13 - (x))) /* channel select */
-#define AD7298_TSENSE (1 << 5) /* temperature conversion enable */
-#define AD7298_EXTREF (1 << 2) /* external reference enable */
-#define AD7298_TAVG (1 << 1) /* temperature sensor averaging enable */
-#define AD7298_PDD (1 << 0) /* partial power down enable */
-
-#define AD7298_MAX_CHAN 8
-#define AD7298_BITS 12
-#define AD7298_STORAGE_BITS 16
-#define AD7298_INTREF_mV 2500
-
-#define AD7298_CH_TEMP 9
-
-#define RES_MASK(bits) ((1 << (bits)) - 1)
-
-/*
- * TODO: struct ad7298_platform_data needs to go into include/linux/iio
- */
-
-struct ad7298_platform_data {
- /* External Vref voltage applied */
- u16 vref_mv;
-};
-
-struct ad7298_state {
- struct spi_device *spi;
- struct regulator *reg;
- u16 int_vref_mv;
- unsigned ext_ref;
- struct spi_transfer ring_xfer[10];
- struct spi_transfer scan_single_xfer[3];
- struct spi_message ring_msg;
- struct spi_message scan_single_msg;
- /*
- * DMA (thus cache coherency maintenance) requires the
- * transfer buffers to live in their own cache lines.
- */
- unsigned short rx_buf[8] ____cacheline_aligned;
- unsigned short tx_buf[2];
-};
-
-#ifdef CONFIG_IIO_BUFFER
-int ad7298_register_ring_funcs_and_init(struct iio_dev *indio_dev);
-void ad7298_ring_cleanup(struct iio_dev *indio_dev);
-int ad7298_update_scan_mode(struct iio_dev *indio_dev,
- const unsigned long *active_scan_mask);
-#else /* CONFIG_IIO_BUFFER */
-
-static inline int
-ad7298_register_ring_funcs_and_init(struct iio_dev *indio_dev)
-{
- return 0;
-}
-
-static inline void ad7298_ring_cleanup(struct iio_dev *indio_dev)
-{
-}
-
-#define ad7298_update_scan_mode NULL
-
-#endif /* CONFIG_IIO_BUFFER */
-#endif /* IIO_ADC_AD7298_H_ */
+++ /dev/null
-/*
- * AD7298 SPI ADC driver
- *
- * Copyright 2011 Analog Devices Inc.
- *
- * Licensed under the GPL-2.
- */
-
-#include <linux/device.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/sysfs.h>
-#include <linux/spi/spi.h>
-#include <linux/regulator/consumer.h>
-#include <linux/err.h>
-#include <linux/delay.h>
-#include <linux/module.h>
-
-#include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
-#include <linux/iio/buffer.h>
-
-#include "ad7298.h"
-
-#define AD7298_V_CHAN(index) \
- { \
- .type = IIO_VOLTAGE, \
- .indexed = 1, \
- .channel = index, \
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT | \
- IIO_CHAN_INFO_SCALE_SHARED_BIT, \
- .address = index, \
- .scan_index = index, \
- .scan_type = { \
- .sign = 'u', \
- .realbits = 12, \
- .storagebits = 16, \
- }, \
- }
-
-static const struct iio_chan_spec ad7298_channels[] = {
- {
- .type = IIO_TEMP,
- .indexed = 1,
- .channel = 0,
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
- IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
- .address = AD7298_CH_TEMP,
- .scan_index = -1,
- .scan_type = {
- .sign = 's',
- .realbits = 32,
- .storagebits = 32,
- },
- },
- AD7298_V_CHAN(0),
- AD7298_V_CHAN(1),
- AD7298_V_CHAN(2),
- AD7298_V_CHAN(3),
- AD7298_V_CHAN(4),
- AD7298_V_CHAN(5),
- AD7298_V_CHAN(6),
- AD7298_V_CHAN(7),
- IIO_CHAN_SOFT_TIMESTAMP(8),
-};
-
-static int ad7298_scan_direct(struct ad7298_state *st, unsigned ch)
-{
- int ret;
- st->tx_buf[0] = cpu_to_be16(AD7298_WRITE | st->ext_ref |
- (AD7298_CH(0) >> ch));
-
- ret = spi_sync(st->spi, &st->scan_single_msg);
- if (ret)
- return ret;
-
- return be16_to_cpu(st->rx_buf[0]);
-}
-
-static int ad7298_scan_temp(struct ad7298_state *st, int *val)
-{
- int tmp, ret;
- __be16 buf;
-
- buf = cpu_to_be16(AD7298_WRITE | AD7298_TSENSE |
- AD7298_TAVG | st->ext_ref);
-
- ret = spi_write(st->spi, (u8 *)&buf, 2);
- if (ret)
- return ret;
-
- buf = cpu_to_be16(0);
-
- ret = spi_write(st->spi, (u8 *)&buf, 2);
- if (ret)
- return ret;
-
- usleep_range(101, 1000); /* sleep > 100us */
-
- ret = spi_read(st->spi, (u8 *)&buf, 2);
- if (ret)
- return ret;
-
- tmp = be16_to_cpu(buf) & RES_MASK(AD7298_BITS);
-
- /*
- * One LSB of the ADC corresponds to 0.25 deg C.
- * The temperature reading is in 12-bit twos complement format
- */
-
- if (tmp & (1 << (AD7298_BITS - 1))) {
- tmp = (4096 - tmp) * 250;
- tmp -= (2 * tmp);
-
- } else {
- tmp *= 250; /* temperature in milli degrees Celsius */
- }
-
- *val = tmp;
-
- return 0;
-}
-
-static int ad7298_read_raw(struct iio_dev *indio_dev,
- struct iio_chan_spec const *chan,
- int *val,
- int *val2,
- long m)
-{
- int ret;
- struct ad7298_state *st = iio_priv(indio_dev);
- unsigned int scale_uv;
-
- switch (m) {
- case IIO_CHAN_INFO_RAW:
- mutex_lock(&indio_dev->mlock);
- if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED) {
- ret = -EBUSY;
- } else {
- if (chan->address == AD7298_CH_TEMP)
- ret = ad7298_scan_temp(st, val);
- else
- ret = ad7298_scan_direct(st, chan->address);
- }
- mutex_unlock(&indio_dev->mlock);
-
- if (ret < 0)
- return ret;
-
- if (chan->address != AD7298_CH_TEMP)
- *val = ret & RES_MASK(AD7298_BITS);
-
- return IIO_VAL_INT;
- case IIO_CHAN_INFO_SCALE:
- switch (chan->type) {
- case IIO_VOLTAGE:
- scale_uv = (st->int_vref_mv * 1000) >> AD7298_BITS;
- *val = scale_uv / 1000;
- *val2 = (scale_uv % 1000) * 1000;
- return IIO_VAL_INT_PLUS_MICRO;
- case IIO_TEMP:
- *val = 1;
- *val2 = 0;
- return IIO_VAL_INT_PLUS_MICRO;
- default:
- return -EINVAL;
- }
- }
- return -EINVAL;
-}
-
-static const struct iio_info ad7298_info = {
- .read_raw = &ad7298_read_raw,
- .update_scan_mode = ad7298_update_scan_mode,
- .driver_module = THIS_MODULE,
-};
-
-static int __devinit ad7298_probe(struct spi_device *spi)
-{
- struct ad7298_platform_data *pdata = spi->dev.platform_data;
- struct ad7298_state *st;
- int ret;
- struct iio_dev *indio_dev = iio_device_alloc(sizeof(*st));
-
- if (indio_dev == NULL)
- return -ENOMEM;
-
- st = iio_priv(indio_dev);
-
- st->reg = regulator_get(&spi->dev, "vcc");
- if (!IS_ERR(st->reg)) {
- ret = regulator_enable(st->reg);
- if (ret)
- goto error_put_reg;
- }
-
- spi_set_drvdata(spi, indio_dev);
-
- st->spi = spi;
-
- indio_dev->name = spi_get_device_id(spi)->name;
- indio_dev->dev.parent = &spi->dev;
- indio_dev->modes = INDIO_DIRECT_MODE;
- indio_dev->channels = ad7298_channels;
- indio_dev->num_channels = ARRAY_SIZE(ad7298_channels);
- indio_dev->info = &ad7298_info;
-
- /* Setup default message */
-
- st->scan_single_xfer[0].tx_buf = &st->tx_buf[0];
- st->scan_single_xfer[0].len = 2;
- st->scan_single_xfer[0].cs_change = 1;
- st->scan_single_xfer[1].tx_buf = &st->tx_buf[1];
- st->scan_single_xfer[1].len = 2;
- st->scan_single_xfer[1].cs_change = 1;
- st->scan_single_xfer[2].rx_buf = &st->rx_buf[0];
- st->scan_single_xfer[2].len = 2;
-
- spi_message_init(&st->scan_single_msg);
- spi_message_add_tail(&st->scan_single_xfer[0], &st->scan_single_msg);
- spi_message_add_tail(&st->scan_single_xfer[1], &st->scan_single_msg);
- spi_message_add_tail(&st->scan_single_xfer[2], &st->scan_single_msg);
-
- if (pdata && pdata->vref_mv) {
- st->int_vref_mv = pdata->vref_mv;
- st->ext_ref = AD7298_EXTREF;
- } else {
- st->int_vref_mv = AD7298_INTREF_mV;
- }
-
- ret = ad7298_register_ring_funcs_and_init(indio_dev);
- if (ret)
- goto error_disable_reg;
-
- ret = iio_device_register(indio_dev);
- if (ret)
- goto error_cleanup_ring;
-
- return 0;
-
-error_cleanup_ring:
- ad7298_ring_cleanup(indio_dev);
-error_disable_reg:
- if (!IS_ERR(st->reg))
- regulator_disable(st->reg);
-error_put_reg:
- if (!IS_ERR(st->reg))
- regulator_put(st->reg);
- iio_device_free(indio_dev);
-
- return ret;
-}
-
-static int __devexit ad7298_remove(struct spi_device *spi)
-{
- struct iio_dev *indio_dev = spi_get_drvdata(spi);
- struct ad7298_state *st = iio_priv(indio_dev);
-
- iio_device_unregister(indio_dev);
- ad7298_ring_cleanup(indio_dev);
- if (!IS_ERR(st->reg)) {
- regulator_disable(st->reg);
- regulator_put(st->reg);
- }
- iio_device_free(indio_dev);
-
- return 0;
-}
-
-static const struct spi_device_id ad7298_id[] = {
- {"ad7298", 0},
- {}
-};
-MODULE_DEVICE_TABLE(spi, ad7298_id);
-
-static struct spi_driver ad7298_driver = {
- .driver = {
- .name = "ad7298",
- .owner = THIS_MODULE,
- },
- .probe = ad7298_probe,
- .remove = __devexit_p(ad7298_remove),
- .id_table = ad7298_id,
-};
-module_spi_driver(ad7298_driver);
-
-MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
-MODULE_DESCRIPTION("Analog Devices AD7298 ADC");
-MODULE_LICENSE("GPL v2");
+++ /dev/null
-/*
- * AD7298 SPI ADC driver
- *
- * Copyright 2011-2012 Analog Devices Inc.
- *
- * Licensed under the GPL-2.
- */
-
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/spi/spi.h>
-
-#include <linux/iio/iio.h>
-#include <linux/iio/buffer.h>
-#include <linux/iio/trigger_consumer.h>
-#include <linux/iio/triggered_buffer.h>
-
-#include "ad7298.h"
-
-/**
- * ad7298_update_scan_mode() setup the spi transfer buffer for the new scan mask
- **/
-int ad7298_update_scan_mode(struct iio_dev *indio_dev,
- const unsigned long *active_scan_mask)
-{
- struct ad7298_state *st = iio_priv(indio_dev);
- int i, m;
- unsigned short command;
- int scan_count;
-
- /* Now compute overall size */
- scan_count = bitmap_weight(active_scan_mask, indio_dev->masklength);
-
- command = AD7298_WRITE | st->ext_ref;
-
- for (i = 0, m = AD7298_CH(0); i < AD7298_MAX_CHAN; i++, m >>= 1)
- if (test_bit(i, active_scan_mask))
- command |= m;
-
- st->tx_buf[0] = cpu_to_be16(command);
-
- /* build spi ring message */
- st->ring_xfer[0].tx_buf = &st->tx_buf[0];
- st->ring_xfer[0].len = 2;
- st->ring_xfer[0].cs_change = 1;
- st->ring_xfer[1].tx_buf = &st->tx_buf[1];
- st->ring_xfer[1].len = 2;
- st->ring_xfer[1].cs_change = 1;
-
- spi_message_init(&st->ring_msg);
- spi_message_add_tail(&st->ring_xfer[0], &st->ring_msg);
- spi_message_add_tail(&st->ring_xfer[1], &st->ring_msg);
-
- for (i = 0; i < scan_count; i++) {
- st->ring_xfer[i + 2].rx_buf = &st->rx_buf[i];
- st->ring_xfer[i + 2].len = 2;
- st->ring_xfer[i + 2].cs_change = 1;
- spi_message_add_tail(&st->ring_xfer[i + 2], &st->ring_msg);
- }
- /* make sure last transfer cs_change is not set */
- st->ring_xfer[i + 1].cs_change = 0;
-
- return 0;
-}
-
-/**
- * ad7298_trigger_handler() bh of trigger launched polling to ring buffer
- *
- * Currently there is no option in this driver to disable the saving of
- * timestamps within the ring.
- **/
-static irqreturn_t ad7298_trigger_handler(int irq, void *p)
-{
- struct iio_poll_func *pf = p;
- struct iio_dev *indio_dev = pf->indio_dev;
- struct ad7298_state *st = iio_priv(indio_dev);
- s64 time_ns = 0;
- __u16 buf[16];
- int b_sent, i;
-
- b_sent = spi_sync(st->spi, &st->ring_msg);
- if (b_sent)
- goto done;
-
- if (indio_dev->scan_timestamp) {
- time_ns = iio_get_time_ns();
- memcpy((u8 *)buf + indio_dev->scan_bytes - sizeof(s64),
- &time_ns, sizeof(time_ns));
- }
-
- for (i = 0; i < bitmap_weight(indio_dev->active_scan_mask,
- indio_dev->masklength); i++)
- buf[i] = be16_to_cpu(st->rx_buf[i]);
-
- iio_push_to_buffers(indio_dev, (u8 *)buf);
-
-done:
- iio_trigger_notify_done(indio_dev->trig);
-
- return IRQ_HANDLED;
-}
-
-int ad7298_register_ring_funcs_and_init(struct iio_dev *indio_dev)
-{
- return iio_triggered_buffer_setup(indio_dev, NULL,
- &ad7298_trigger_handler, NULL);
-}
-
-void ad7298_ring_cleanup(struct iio_dev *indio_dev)
-{
- iio_triggered_buffer_cleanup(indio_dev);
-}
chip->config = config;
- return ret;
+ return len;
}
static IIO_DEVICE_ATTR(mode, S_IRUGO | S_IWUSR,
obj-$(CONFIG_ADIS16130) += adis16130.o
adis16260-y := adis16260_core.o
-adis16260-$(CONFIG_IIO_BUFFER) += adis16260_ring.o adis16260_trigger.o
obj-$(CONFIG_ADIS16260) += adis16260.o
adis16251-y := adis16251_core.o
#ifndef SPI_ADIS16260_H_
#define SPI_ADIS16260_H_
+
#include "adis16260_platform_data.h"
+#include <linux/iio/imu/adis.h>
#define ADIS16260_STARTUP_DELAY 220 /* ms */
-#define ADIS16260_READ_REG(a) a
-#define ADIS16260_WRITE_REG(a) ((a) | 0x80)
-
#define ADIS16260_FLASH_CNT 0x00 /* Flash memory write count */
#define ADIS16260_SUPPLY_OUT 0x02 /* Power supply measurement */
#define ADIS16260_GYRO_OUT 0x04 /* X-axis gyroscope output */
* convert to decimal = 16,265/16,260 */
#define ADIS16260_SERIAL_NUM 0x58 /* Serial number */
-#define ADIS16260_OUTPUTS 5
-
#define ADIS16260_ERROR_ACTIVE (1<<14)
#define ADIS16260_NEW_DATA (1<<15)
/* DIAG_STAT */
#define ADIS16260_DIAG_STAT_ALARM2 (1<<9)
#define ADIS16260_DIAG_STAT_ALARM1 (1<<8)
-#define ADIS16260_DIAG_STAT_FLASH_CHK (1<<6)
-#define ADIS16260_DIAG_STAT_SELF_TEST (1<<5)
-#define ADIS16260_DIAG_STAT_OVERFLOW (1<<4)
-#define ADIS16260_DIAG_STAT_SPI_FAIL (1<<3)
-#define ADIS16260_DIAG_STAT_FLASH_UPT (1<<2)
-#define ADIS16260_DIAG_STAT_POWER_HIGH (1<<1)
-#define ADIS16260_DIAG_STAT_POWER_LOW (1<<0)
+#define ADIS16260_DIAG_STAT_FLASH_CHK_BIT 6
+#define ADIS16260_DIAG_STAT_SELF_TEST_BIT 5
+#define ADIS16260_DIAG_STAT_OVERFLOW_BIT 4
+#define ADIS16260_DIAG_STAT_SPI_FAIL_BIT 3
+#define ADIS16260_DIAG_STAT_FLASH_UPT_BIT 2
+#define ADIS16260_DIAG_STAT_POWER_HIGH_BIT 1
+#define ADIS16260_DIAG_STAT_POWER_LOW_BIT 0
/* GLOB_CMD */
#define ADIS16260_GLOB_CMD_SW_RESET (1<<7)
#define ADIS16260_GLOB_CMD_FAC_CALIB (1<<1)
#define ADIS16260_GLOB_CMD_AUTO_NULL (1<<0)
-#define ADIS16260_MAX_TX 24
-#define ADIS16260_MAX_RX 24
-
#define ADIS16260_SPI_SLOW (u32)(300 * 1000)
#define ADIS16260_SPI_BURST (u32)(1000 * 1000)
#define ADIS16260_SPI_FAST (u32)(2000 * 1000)
/**
* struct adis16260_state - device instance specific data
- * @us: actual spi_device
- * @trig: data ready trigger registered with iio
- * @buf_lock: mutex to protect tx and rx
* @negate: negate the scale parameter
- * @tx: transmit buffer
- * @rx: receive buffer
**/
struct adis16260_state {
- struct spi_device *us;
- struct iio_trigger *trig;
- struct mutex buf_lock;
- unsigned negate:1;
- u8 tx[ADIS16260_MAX_TX] ____cacheline_aligned;
- u8 rx[ADIS16260_MAX_RX];
+ unsigned negate:1;
+ struct adis adis;
};
-int adis16260_set_irq(struct iio_dev *indio_dev, bool enable);
-
/* At the moment triggers are only used for ring buffer
* filling. This may change!
*/
-#define ADIS16260_SCAN_SUPPLY 0
-#define ADIS16260_SCAN_GYRO 1
+#define ADIS16260_SCAN_GYRO 0
+#define ADIS16260_SCAN_SUPPLY 1
#define ADIS16260_SCAN_AUX_ADC 2
#define ADIS16260_SCAN_TEMP 3
#define ADIS16260_SCAN_ANGL 4
-#ifdef CONFIG_IIO_BUFFER
-void adis16260_remove_trigger(struct iio_dev *indio_dev);
-int adis16260_probe_trigger(struct iio_dev *indio_dev);
-
-ssize_t adis16260_read_data_from_ring(struct device *dev,
- struct device_attribute *attr,
- char *buf);
-
-
-int adis16260_configure_ring(struct iio_dev *indio_dev);
-void adis16260_unconfigure_ring(struct iio_dev *indio_dev);
-
-#else /* CONFIG_IIO_BUFFER */
-
-static inline void adis16260_remove_trigger(struct iio_dev *indio_dev)
-{
-}
-
-static inline int adis16260_probe_trigger(struct iio_dev *indio_dev)
-{
- return 0;
-}
-
-static inline ssize_t
-adis16260_read_data_from_ring(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return 0;
-}
-
-static int adis16260_configure_ring(struct iio_dev *indio_dev)
-{
- return 0;
-}
-
-static inline void adis16260_unconfigure_ring(struct iio_dev *indio_dev)
-{
-}
-
-#endif /* CONFIG_IIO_BUFFER */
#endif /* SPI_ADIS16260_H_ */
#include "adis16260.h"
-static int adis16260_check_status(struct iio_dev *indio_dev);
-
-/**
- * adis16260_spi_write_reg_8() - write single byte to a register
- * @indio_dev: iio_dev for the device
- * @reg_address: the address of the register to be written
- * @val: the value to write
- **/
-static int adis16260_spi_write_reg_8(struct iio_dev *indio_dev,
- u8 reg_address,
- u8 val)
-{
- int ret;
- struct adis16260_state *st = iio_priv(indio_dev);
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = ADIS16260_WRITE_REG(reg_address);
- st->tx[1] = val;
-
- ret = spi_write(st->us, st->tx, 2);
- mutex_unlock(&st->buf_lock);
-
- return ret;
-}
-
-/**
- * adis16260_spi_write_reg_16() - write 2 bytes to a pair of registers
- * @indio_dev: iio_dev for the device
- * @reg_address: the address of the lower of the two registers. Second register
- * is assumed to have address one greater.
- * @val: value to be written
- **/
-static int adis16260_spi_write_reg_16(struct iio_dev *indio_dev,
- u8 lower_reg_address,
- u16 value)
-{
- int ret;
- struct spi_message msg;
- struct adis16260_state *st = iio_priv(indio_dev);
- struct spi_transfer xfers[] = {
- {
- .tx_buf = st->tx,
- .bits_per_word = 8,
- .len = 2,
- .cs_change = 1,
- .delay_usecs = 20,
- }, {
- .tx_buf = st->tx + 2,
- .bits_per_word = 8,
- .len = 2,
- .delay_usecs = 20,
- },
- };
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = ADIS16260_WRITE_REG(lower_reg_address);
- st->tx[1] = value & 0xFF;
- st->tx[2] = ADIS16260_WRITE_REG(lower_reg_address + 1);
- st->tx[3] = (value >> 8) & 0xFF;
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfers[0], &msg);
- spi_message_add_tail(&xfers[1], &msg);
- ret = spi_sync(st->us, &msg);
- mutex_unlock(&st->buf_lock);
-
- return ret;
-}
-
-/**
- * adis16260_spi_read_reg_16() - read 2 bytes from a 16-bit register
- * @indio_dev: iio_dev for the device
- * @reg_address: the address of the lower of the two registers. Second register
- * is assumed to have address one greater.
- * @val: somewhere to pass back the value read
- **/
-static int adis16260_spi_read_reg_16(struct iio_dev *indio_dev,
- u8 lower_reg_address,
- u16 *val)
-{
- struct spi_message msg;
- struct adis16260_state *st = iio_priv(indio_dev);
- int ret;
- struct spi_transfer xfers[] = {
- {
- .tx_buf = st->tx,
- .bits_per_word = 8,
- .len = 2,
- .cs_change = 1,
- .delay_usecs = 30,
- }, {
- .rx_buf = st->rx,
- .bits_per_word = 8,
- .len = 2,
- .delay_usecs = 30,
- },
- };
-
- mutex_lock(&st->buf_lock);
- st->tx[0] = ADIS16260_READ_REG(lower_reg_address);
- st->tx[1] = 0;
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfers[0], &msg);
- spi_message_add_tail(&xfers[1], &msg);
- ret = spi_sync(st->us, &msg);
- if (ret) {
- dev_err(&st->us->dev,
- "problem when reading 16 bit register 0x%02X",
- lower_reg_address);
- goto error_ret;
- }
- *val = (st->rx[0] << 8) | st->rx[1];
-
-error_ret:
- mutex_unlock(&st->buf_lock);
- return ret;
-}
-
static ssize_t adis16260_read_frequency_available(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct adis16260_state *st = iio_priv(indio_dev);
- if (spi_get_device_id(st->us)->driver_data)
+ if (spi_get_device_id(st->adis.spi)->driver_data)
return sprintf(buf, "%s\n", "0.129 ~ 256");
else
return sprintf(buf, "%s\n", "256 2048");
int ret, len = 0;
u16 t;
int sps;
- ret = adis16260_spi_read_reg_16(indio_dev,
- ADIS16260_SMPL_PRD,
- &t);
+ ret = adis_read_reg_16(&st->adis, ADIS16260_SMPL_PRD, &t);
if (ret)
return ret;
- if (spi_get_device_id(st->us)->driver_data) /* If an adis16251 */
+ if (spi_get_device_id(st->adis.spi)->driver_data) /* If an adis16251 */
sps = (t & ADIS16260_SMPL_PRD_TIME_BASE) ? 8 : 256;
else
sps = (t & ADIS16260_SMPL_PRD_TIME_BASE) ? 66 : 2048;
return -EINVAL;
mutex_lock(&indio_dev->mlock);
- if (spi_get_device_id(st->us)) {
+ if (spi_get_device_id(st->adis.spi)->driver_data) {
t = (256 / val);
if (t > 0)
t--;
t &= ADIS16260_SMPL_PRD_DIV_MASK;
}
if ((t & ADIS16260_SMPL_PRD_DIV_MASK) >= 0x0A)
- st->us->max_speed_hz = ADIS16260_SPI_SLOW;
+ st->adis.spi->max_speed_hz = ADIS16260_SPI_SLOW;
else
- st->us->max_speed_hz = ADIS16260_SPI_FAST;
- ret = adis16260_spi_write_reg_8(indio_dev,
+ st->adis.spi->max_speed_hz = ADIS16260_SPI_FAST;
+ ret = adis_write_reg_8(&st->adis,
ADIS16260_SMPL_PRD,
t);
return ret ? ret : len;
}
-static int adis16260_reset(struct iio_dev *indio_dev)
-{
- int ret;
- ret = adis16260_spi_write_reg_8(indio_dev,
- ADIS16260_GLOB_CMD,
- ADIS16260_GLOB_CMD_SW_RESET);
- if (ret)
- dev_err(&indio_dev->dev, "problem resetting device");
-
- return ret;
-}
-
-int adis16260_set_irq(struct iio_dev *indio_dev, bool enable)
-{
- int ret;
- u16 msc;
- ret = adis16260_spi_read_reg_16(indio_dev, ADIS16260_MSC_CTRL, &msc);
- if (ret)
- goto error_ret;
-
- msc |= ADIS16260_MSC_CTRL_DATA_RDY_POL_HIGH;
- if (enable)
- msc |= ADIS16260_MSC_CTRL_DATA_RDY_EN;
- else
- msc &= ~ADIS16260_MSC_CTRL_DATA_RDY_EN;
-
- ret = adis16260_spi_write_reg_16(indio_dev, ADIS16260_MSC_CTRL, msc);
- if (ret)
- goto error_ret;
-
-error_ret:
- return ret;
-}
-
/* Power down the device */
static int adis16260_stop_device(struct iio_dev *indio_dev)
{
+ struct adis16260_state *st = iio_priv(indio_dev);
int ret;
u16 val = ADIS16260_SLP_CNT_POWER_OFF;
- ret = adis16260_spi_write_reg_16(indio_dev, ADIS16260_SLP_CNT, val);
+ ret = adis_write_reg_16(&st->adis, ADIS16260_SLP_CNT, val);
if (ret)
dev_err(&indio_dev->dev, "problem with turning device off: SLP_CNT");
return ret;
}
-static int adis16260_self_test(struct iio_dev *indio_dev)
-{
- int ret;
- ret = adis16260_spi_write_reg_16(indio_dev,
- ADIS16260_MSC_CTRL,
- ADIS16260_MSC_CTRL_MEM_TEST);
- if (ret) {
- dev_err(&indio_dev->dev, "problem starting self test");
- goto err_ret;
- }
-
- adis16260_check_status(indio_dev);
-
-err_ret:
- return ret;
-}
-
-static int adis16260_check_status(struct iio_dev *indio_dev)
-{
- u16 status;
- int ret;
- struct device *dev = &indio_dev->dev;
-
- ret = adis16260_spi_read_reg_16(indio_dev,
- ADIS16260_DIAG_STAT,
- &status);
-
- if (ret < 0) {
- dev_err(dev, "Reading status failed\n");
- goto error_ret;
- }
- ret = status & 0x7F;
- if (status & ADIS16260_DIAG_STAT_FLASH_CHK)
- dev_err(dev, "Flash checksum error\n");
- if (status & ADIS16260_DIAG_STAT_SELF_TEST)
- dev_err(dev, "Self test error\n");
- if (status & ADIS16260_DIAG_STAT_OVERFLOW)
- dev_err(dev, "Sensor overrange\n");
- if (status & ADIS16260_DIAG_STAT_SPI_FAIL)
- dev_err(dev, "SPI failure\n");
- if (status & ADIS16260_DIAG_STAT_FLASH_UPT)
- dev_err(dev, "Flash update failed\n");
- if (status & ADIS16260_DIAG_STAT_POWER_HIGH)
- dev_err(dev, "Power supply above 5.25V\n");
- if (status & ADIS16260_DIAG_STAT_POWER_LOW)
- dev_err(dev, "Power supply below 4.75V\n");
-
-error_ret:
- return ret;
-}
-
-static int adis16260_initial_setup(struct iio_dev *indio_dev)
-{
- int ret;
- struct device *dev = &indio_dev->dev;
-
- /* Disable IRQ */
- ret = adis16260_set_irq(indio_dev, false);
- if (ret) {
- dev_err(dev, "disable irq failed");
- goto err_ret;
- }
-
- /* Do self test */
- ret = adis16260_self_test(indio_dev);
- if (ret) {
- dev_err(dev, "self test failure");
- goto err_ret;
- }
-
- /* Read status register to check the result */
- ret = adis16260_check_status(indio_dev);
- if (ret) {
- adis16260_reset(indio_dev);
- dev_err(dev, "device not playing ball -> reset");
- msleep(ADIS16260_STARTUP_DELAY);
- ret = adis16260_check_status(indio_dev);
- if (ret) {
- dev_err(dev, "giving up");
- goto err_ret;
- }
- }
-
-err_ret:
- return ret;
-}
-
static IIO_DEV_ATTR_SAMP_FREQ(S_IWUSR | S_IRUGO,
adis16260_read_frequency,
adis16260_write_frequency);
static IIO_DEVICE_ATTR(sampling_frequency_available,
S_IRUGO, adis16260_read_frequency_available, NULL, 0);
-enum adis16260_channel {
- gyro,
- temp,
- in_supply,
- in_aux,
- angle,
-};
#define ADIS16260_GYRO_CHANNEL_SET(axis, mod) \
- struct iio_chan_spec adis16260_channels_##axis[] = { \
- { \
- .type = IIO_ANGL_VEL, \
- .modified = 1, \
- .channel2 = mod, \
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT | \
- IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT | \
- IIO_CHAN_INFO_CALIBSCALE_SEPARATE_BIT | \
- IIO_CHAN_INFO_SCALE_SEPARATE_BIT, \
- .address = gyro, \
- .scan_index = ADIS16260_SCAN_GYRO, \
- .scan_type = { \
- .sign = 's', \
- .realbits = 14, \
- .storagebits = 16, \
- }, \
- }, { \
- .type = IIO_ANGL, \
- .modified = 1, \
- .channel2 = mod, \
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT, \
- .address = angle, \
- .scan_index = ADIS16260_SCAN_ANGL, \
- .scan_type = { \
- .sign = 'u', \
- .realbits = 14, \
- .storagebits = 16, \
- }, \
- }, { \
- .type = IIO_TEMP, \
- .indexed = 1, \
- .channel = 0, \
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT | \
- IIO_CHAN_INFO_OFFSET_SEPARATE_BIT | \
- IIO_CHAN_INFO_SCALE_SEPARATE_BIT, \
- .address = temp, \
- .scan_index = ADIS16260_SCAN_TEMP, \
- .scan_type = { \
- .sign = 'u', \
- .realbits = 12, \
- .storagebits = 16, \
- }, \
- }, { \
- .type = IIO_VOLTAGE, \
- .indexed = 1, \
- .channel = 0, \
- .extend_name = "supply", \
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT | \
- IIO_CHAN_INFO_SCALE_SEPARATE_BIT, \
- .address = in_supply, \
- .scan_index = ADIS16260_SCAN_SUPPLY, \
- .scan_type = { \
- .sign = 'u', \
- .realbits = 12, \
- .storagebits = 16, \
- }, \
- }, { \
- .type = IIO_VOLTAGE, \
- .indexed = 1, \
- .channel = 1, \
- .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT | \
- IIO_CHAN_INFO_SCALE_SEPARATE_BIT, \
- .address = in_aux, \
- .scan_index = ADIS16260_SCAN_AUX_ADC, \
- .scan_type = { \
- .sign = 'u', \
- .realbits = 12, \
- .storagebits = 16, \
- }, \
- }, \
- IIO_CHAN_SOFT_TIMESTAMP(5), \
- }
+struct iio_chan_spec adis16260_channels_##axis[] = { \
+ ADIS_GYRO_CHAN(mod, ADIS16260_GYRO_OUT, ADIS16260_SCAN_GYRO, \
+ IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT | \
+ IIO_CHAN_INFO_CALIBSCALE_SEPARATE_BIT, 14), \
+ ADIS_INCLI_CHAN(mod, ADIS16260_ANGL_OUT, ADIS16260_SCAN_ANGL, 0, 14), \
+ ADIS_TEMP_CHAN(ADIS16260_TEMP_OUT, ADIS16260_SCAN_TEMP, 12), \
+ ADIS_SUPPLY_CHAN(ADIS16260_SUPPLY_OUT, ADIS16260_SCAN_SUPPLY, 12), \
+ ADIS_AUX_ADC_CHAN(ADIS16260_AUX_ADC, ADIS16260_SCAN_AUX_ADC, 12), \
+ IIO_CHAN_SOFT_TIMESTAMP(5), \
+}
-static const ADIS16260_GYRO_CHANNEL_SET(x, IIO_MOD_X);
-static const ADIS16260_GYRO_CHANNEL_SET(y, IIO_MOD_Y);
-static const ADIS16260_GYRO_CHANNEL_SET(z, IIO_MOD_Z);
-
-static const u8 adis16260_addresses[5][3] = {
- [gyro] = { ADIS16260_GYRO_OUT,
- ADIS16260_GYRO_OFF,
- ADIS16260_GYRO_SCALE },
- [angle] = { ADIS16260_ANGL_OUT },
- [in_supply] = { ADIS16260_SUPPLY_OUT },
- [in_aux] = { ADIS16260_AUX_ADC },
- [temp] = { ADIS16260_TEMP_OUT },
+static const ADIS16260_GYRO_CHANNEL_SET(x, X);
+static const ADIS16260_GYRO_CHANNEL_SET(y, Y);
+static const ADIS16260_GYRO_CHANNEL_SET(z, Z);
+
+static const u8 adis16260_addresses[][2] = {
+ [ADIS16260_SCAN_GYRO] = { ADIS16260_GYRO_OFF, ADIS16260_GYRO_SCALE },
};
+
static int adis16260_read_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
int *val, int *val2,
switch (mask) {
case IIO_CHAN_INFO_RAW:
- mutex_lock(&indio_dev->mlock);
- addr = adis16260_addresses[chan->address][0];
- ret = adis16260_spi_read_reg_16(indio_dev, addr, &val16);
- if (ret) {
- mutex_unlock(&indio_dev->mlock);
- return ret;
- }
-
- if (val16 & ADIS16260_ERROR_ACTIVE) {
- ret = adis16260_check_status(indio_dev);
- if (ret) {
- mutex_unlock(&indio_dev->mlock);
- return ret;
- }
- }
- val16 = val16 & ((1 << chan->scan_type.realbits) - 1);
- if (chan->scan_type.sign == 's')
- val16 = (s16)(val16 <<
- (16 - chan->scan_type.realbits)) >>
- (16 - chan->scan_type.realbits);
- *val = val16;
- mutex_unlock(&indio_dev->mlock);
- return IIO_VAL_INT;
+ return adis_single_conversion(indio_dev, chan,
+ ADIS16260_ERROR_ACTIVE, val);
case IIO_CHAN_INFO_SCALE:
switch (chan->type) {
case IIO_ANGL_VEL:
*val = 0;
- if (spi_get_device_id(st->us)->driver_data) {
+ if (spi_get_device_id(st->adis.spi)->driver_data) {
/* 0.01832 degree / sec */
*val2 = IIO_DEGREE_TO_RAD(18320);
} else {
return -EINVAL;
}
mutex_lock(&indio_dev->mlock);
- addr = adis16260_addresses[chan->address][1];
- ret = adis16260_spi_read_reg_16(indio_dev, addr, &val16);
+ addr = adis16260_addresses[chan->scan_index][0];
+ ret = adis_read_reg_16(&st->adis, addr, &val16);
if (ret) {
mutex_unlock(&indio_dev->mlock);
return ret;
return -EINVAL;
}
mutex_lock(&indio_dev->mlock);
- addr = adis16260_addresses[chan->address][2];
- ret = adis16260_spi_read_reg_16(indio_dev, addr, &val16);
+ addr = adis16260_addresses[chan->scan_index][1];
+ ret = adis_read_reg_16(&st->adis, addr, &val16);
if (ret) {
mutex_unlock(&indio_dev->mlock);
return ret;
int val2,
long mask)
{
+ struct adis16260_state *st = iio_priv(indio_dev);
int bits = 12;
s16 val16;
u8 addr;
switch (mask) {
case IIO_CHAN_INFO_CALIBBIAS:
val16 = val & ((1 << bits) - 1);
- addr = adis16260_addresses[chan->address][1];
- return adis16260_spi_write_reg_16(indio_dev, addr, val16);
+ addr = adis16260_addresses[chan->scan_index][0];
+ return adis_write_reg_16(&st->adis, addr, val16);
case IIO_CHAN_INFO_CALIBSCALE:
val16 = val & ((1 << bits) - 1);
- addr = adis16260_addresses[chan->address][2];
- return adis16260_spi_write_reg_16(indio_dev, addr, val16);
+ addr = adis16260_addresses[chan->scan_index][1];
+ return adis_write_reg_16(&st->adis, addr, val16);
}
return -EINVAL;
}
.attrs = &adis16260_attribute_group,
.read_raw = &adis16260_read_raw,
.write_raw = &adis16260_write_raw,
+ .update_scan_mode = adis_update_scan_mode,
.driver_module = THIS_MODULE,
};
+static const char * const adis1620_status_error_msgs[] = {
+ [ADIS16260_DIAG_STAT_FLASH_CHK_BIT] = "Flash checksum error",
+ [ADIS16260_DIAG_STAT_SELF_TEST_BIT] = "Self test error",
+ [ADIS16260_DIAG_STAT_OVERFLOW_BIT] = "Sensor overrange",
+ [ADIS16260_DIAG_STAT_SPI_FAIL_BIT] = "SPI failure",
+ [ADIS16260_DIAG_STAT_FLASH_UPT_BIT] = "Flash update failed",
+ [ADIS16260_DIAG_STAT_POWER_HIGH_BIT] = "Power supply above 5.25",
+ [ADIS16260_DIAG_STAT_POWER_LOW_BIT] = "Power supply below 4.75",
+};
+
+static const struct adis_data adis16260_data = {
+ .write_delay = 30,
+ .read_delay = 30,
+ .msc_ctrl_reg = ADIS16260_MSC_CTRL,
+ .glob_cmd_reg = ADIS16260_GLOB_CMD,
+ .diag_stat_reg = ADIS16260_DIAG_STAT,
+
+ .self_test_mask = ADIS16260_MSC_CTRL_MEM_TEST,
+ .startup_delay = ADIS16260_STARTUP_DELAY,
+
+ .status_error_msgs = adis1620_status_error_msgs,
+ .status_error_mask = BIT(ADIS16260_DIAG_STAT_FLASH_CHK_BIT) |
+ BIT(ADIS16260_DIAG_STAT_SELF_TEST_BIT) |
+ BIT(ADIS16260_DIAG_STAT_OVERFLOW_BIT) |
+ BIT(ADIS16260_DIAG_STAT_SPI_FAIL_BIT) |
+ BIT(ADIS16260_DIAG_STAT_FLASH_UPT_BIT) |
+ BIT(ADIS16260_DIAG_STAT_POWER_HIGH_BIT) |
+ BIT(ADIS16260_DIAG_STAT_POWER_LOW_BIT),
+};
+
static int __devinit adis16260_probe(struct spi_device *spi)
{
int ret;
/* this is only used for removal purposes */
spi_set_drvdata(spi, indio_dev);
- st->us = spi;
- mutex_init(&st->buf_lock);
-
- indio_dev->name = spi_get_device_id(st->us)->name;
+ indio_dev->name = spi_get_device_id(spi)->name;
indio_dev->dev.parent = &spi->dev;
indio_dev->info = &adis16260_info;
indio_dev->num_channels
indio_dev->num_channels = ARRAY_SIZE(adis16260_channels_x);
indio_dev->modes = INDIO_DIRECT_MODE;
- ret = adis16260_configure_ring(indio_dev);
+ ret = adis_init(&st->adis, indio_dev, spi, &adis16260_data);
+ if (ret)
+ goto error_free_dev;
+
+ ret = adis_setup_buffer_and_trigger(&st->adis, indio_dev, NULL);
if (ret)
goto error_free_dev;
- ret = iio_buffer_register(indio_dev,
- indio_dev->channels,
- ARRAY_SIZE(adis16260_channels_x));
- if (ret) {
- printk(KERN_ERR "failed to initialize the ring\n");
- goto error_unreg_ring_funcs;
- }
if (indio_dev->buffer) {
/* Set default scan mode */
iio_scan_mask_set(indio_dev, indio_dev->buffer,
iio_scan_mask_set(indio_dev, indio_dev->buffer,
ADIS16260_SCAN_ANGL);
}
- if (spi->irq) {
- ret = adis16260_probe_trigger(indio_dev);
- if (ret)
- goto error_uninitialize_ring;
- }
/* Get the device into a sane initial state */
- ret = adis16260_initial_setup(indio_dev);
+ ret = adis_initial_startup(&st->adis);
if (ret)
- goto error_remove_trigger;
+ goto error_cleanup_buffer_trigger;
ret = iio_device_register(indio_dev);
if (ret)
- goto error_remove_trigger;
+ goto error_cleanup_buffer_trigger;
return 0;
-error_remove_trigger:
- adis16260_remove_trigger(indio_dev);
-error_uninitialize_ring:
- iio_buffer_unregister(indio_dev);
-error_unreg_ring_funcs:
- adis16260_unconfigure_ring(indio_dev);
+error_cleanup_buffer_trigger:
+ adis_cleanup_buffer_and_trigger(&st->adis, indio_dev);
error_free_dev:
iio_device_free(indio_dev);
error_ret:
static int __devexit adis16260_remove(struct spi_device *spi)
{
struct iio_dev *indio_dev = spi_get_drvdata(spi);
+ struct adis16260_state *st = iio_priv(indio_dev);
iio_device_unregister(indio_dev);
adis16260_stop_device(indio_dev);
- adis16260_remove_trigger(indio_dev);
- iio_buffer_unregister(indio_dev);
- adis16260_unconfigure_ring(indio_dev);
+ adis_cleanup_buffer_and_trigger(&st->adis, indio_dev);
iio_device_free(indio_dev);
return 0;
+++ /dev/null
-#include <linux/export.h>
-#include <linux/interrupt.h>
-#include <linux/mutex.h>
-#include <linux/kernel.h>
-#include <linux/spi/spi.h>
-#include <linux/slab.h>
-
-#include <linux/iio/iio.h>
-#include "../ring_sw.h"
-#include <linux/iio/trigger_consumer.h>
-#include "adis16260.h"
-
-/**
- * adis16260_read_ring_data() read data registers which will be placed into ring
- * @indio_dev: the IIO device
- * @rx: somewhere to pass back the value read
- **/
-static int adis16260_read_ring_data(struct iio_dev *indio_dev, u8 *rx)
-{
- struct spi_message msg;
- struct adis16260_state *st = iio_priv(indio_dev);
- struct spi_transfer xfers[ADIS16260_OUTPUTS + 1];
- int ret;
- int i;
-
- mutex_lock(&st->buf_lock);
-
- spi_message_init(&msg);
-
- memset(xfers, 0, sizeof(xfers));
- for (i = 0; i <= ADIS16260_OUTPUTS; i++) {
- xfers[i].bits_per_word = 8;
- xfers[i].cs_change = 1;
- xfers[i].len = 2;
- xfers[i].delay_usecs = 30;
- xfers[i].tx_buf = st->tx + 2 * i;
- if (i < 2) /* SUPPLY_OUT:0x02 GYRO_OUT:0x04 */
- st->tx[2 * i]
- = ADIS16260_READ_REG(ADIS16260_SUPPLY_OUT
- + 2 * i);
- else /* 0x06 to 0x09 is reserved */
- st->tx[2 * i]
- = ADIS16260_READ_REG(ADIS16260_SUPPLY_OUT
- + 2 * i + 4);
- st->tx[2 * i + 1] = 0;
- if (i >= 1)
- xfers[i].rx_buf = rx + 2 * (i - 1);
- spi_message_add_tail(&xfers[i], &msg);
- }
-
- ret = spi_sync(st->us, &msg);
- if (ret)
- dev_err(&st->us->dev, "problem when burst reading");
-
- mutex_unlock(&st->buf_lock);
-
- return ret;
-}
-
-static irqreturn_t adis16260_trigger_handler(int irq, void *p)
-{
- struct iio_poll_func *pf = p;
- struct iio_dev *indio_dev = pf->indio_dev;
- struct adis16260_state *st = iio_priv(indio_dev);
- int i = 0;
- s16 *data;
-
- data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
- if (data == NULL) {
- dev_err(&st->us->dev, "memory alloc failed in ring bh");
- goto done;
- }
-
- if (!bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength) &&
- adis16260_read_ring_data(indio_dev, st->rx) >= 0)
- for (; i < bitmap_weight(indio_dev->active_scan_mask,
- indio_dev->masklength); i++)
- data[i] = be16_to_cpup((__be16 *)&(st->rx[i*2]));
-
- /* Guaranteed to be aligned with 8 byte boundary */
- if (indio_dev->scan_timestamp)
- *((s64 *)(data + ((i + 3)/4)*4)) = pf->timestamp;
-
- iio_push_to_buffers(indio_dev, (u8 *)data);
-
- kfree(data);
-done:
- iio_trigger_notify_done(indio_dev->trig);
-
- return IRQ_HANDLED;
-}
-
-void adis16260_unconfigure_ring(struct iio_dev *indio_dev)
-{
- iio_dealloc_pollfunc(indio_dev->pollfunc);
- iio_sw_rb_free(indio_dev->buffer);
-}
-
-static const struct iio_buffer_setup_ops adis16260_ring_setup_ops = {
- .preenable = &iio_sw_buffer_preenable,
- .postenable = &iio_triggered_buffer_postenable,
- .predisable = &iio_triggered_buffer_predisable,
-};
-
-int adis16260_configure_ring(struct iio_dev *indio_dev)
-{
- int ret = 0;
- struct iio_buffer *ring;
-
- ring = iio_sw_rb_allocate(indio_dev);
- if (!ring) {
- ret = -ENOMEM;
- return ret;
- }
- indio_dev->buffer = ring;
- ring->scan_timestamp = true;
- indio_dev->setup_ops = &adis16260_ring_setup_ops;
-
- indio_dev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time,
- &adis16260_trigger_handler,
- IRQF_ONESHOT,
- indio_dev,
- "adis16260_consumer%d",
- indio_dev->id);
- if (indio_dev->pollfunc == NULL) {
- ret = -ENOMEM;
- goto error_iio_sw_rb_free;
- }
-
- indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
- return 0;
-
-error_iio_sw_rb_free:
- iio_sw_rb_free(indio_dev->buffer);
- return ret;
-}
+++ /dev/null
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/spi/spi.h>
-#include <linux/export.h>
-
-#include <linux/iio/iio.h>
-#include <linux/iio/trigger.h>
-#include "adis16260.h"
-
-/**
- * adis16260_data_rdy_trigger_set_state() set datardy interrupt state
- **/
-static int adis16260_data_rdy_trigger_set_state(struct iio_trigger *trig,
- bool state)
-{
- struct iio_dev *indio_dev = trig->private_data;
-
- dev_dbg(&indio_dev->dev, "%s (%d)\n", __func__, state);
- return adis16260_set_irq(indio_dev, state);
-}
-
-static const struct iio_trigger_ops adis16260_trigger_ops = {
- .owner = THIS_MODULE,
- .set_trigger_state = &adis16260_data_rdy_trigger_set_state,
-};
-
-int adis16260_probe_trigger(struct iio_dev *indio_dev)
-{
- int ret;
- struct adis16260_state *st = iio_priv(indio_dev);
-
- st->trig = iio_trigger_alloc("%s-dev%d",
- spi_get_device_id(st->us)->name,
- indio_dev->id);
- if (st->trig == NULL) {
- ret = -ENOMEM;
- goto error_ret;
- }
-
- ret = request_irq(st->us->irq,
- &iio_trigger_generic_data_rdy_poll,
- IRQF_TRIGGER_RISING,
- "adis16260",
- st->trig);
- if (ret)
- goto error_free_trig;
-
- st->trig->dev.parent = &st->us->dev;
- st->trig->ops = &adis16260_trigger_ops;
- st->trig->private_data = indio_dev;
- ret = iio_trigger_register(st->trig);
-
- /* select default trigger */
- indio_dev->trig = st->trig;
- if (ret)
- goto error_free_irq;
-
- return 0;
-
-error_free_irq:
- free_irq(st->us->irq, st->trig);
-error_free_trig:
- iio_trigger_free(st->trig);
-error_ret:
- return ret;
-}
-
-void adis16260_remove_trigger(struct iio_dev *indio_dev)
-{
- struct adis16260_state *st = iio_priv(indio_dev);
-
- iio_trigger_unregister(st->trig);
- free_irq(st->us->irq, st->trig);
- iio_trigger_free(st->trig);
-}
}
mutex_unlock(&chip->lock);
- return 0;
+ return ret;
}
static int isl29018_read_raw(struct iio_dev *indio_dev,
}
if (!state && (chip->intr & 0x30)) {
- chip->intr |= ~0x30;
+ chip->intr &= ~0x30;
ret = i2c_smbus_write_byte_data(chip->client,
TSL2563_CMD | TSL2563_REG_INT,
chip->intr);
if (!chip->int_enabled)
cancel_delayed_work(&chip->poweroff_work);
/* Ensure that interrupts are disabled - then flush any bottom halves */
- chip->intr |= ~0x30;
+ chip->intr &= ~0x30;
i2c_smbus_write_byte_data(chip->client, TSL2563_CMD | TSL2563_REG_INT,
chip->intr);
flush_scheduled_work();
#else /* CONFIG_IIO_BUFFER */
static inline int iio_buffer_register(struct iio_dev *indio_dev,
- struct iio_chan_spec *channels,
+ const struct iio_chan_spec *channels,
int num_channels)
{
return 0;
};
#endif
+int iio_str_to_fixpoint(const char *str, int fract_mult, int *integer,
+ int *fract);
+
/**
* IIO_DEGREE_TO_RAD() - Convert degree to rad
* @deg: A value in degree
--- /dev/null
+/*
+ * Common library for ADIS16XXX devices
+ *
+ * Copyright 2012 Analog Devices Inc.
+ * Author: Lars-Peter Clausen <lars@metafoo.de>
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __IIO_ADIS_H__
+#define __IIO_ADIS_H__
+
+#include <linux/spi/spi.h>
+#include <linux/interrupt.h>
+#include <linux/iio/types.h>
+
+#define ADIS_WRITE_REG(reg) ((0x80 | (reg)))
+#define ADIS_READ_REG(reg) ((reg) & 0x7f)
+
+#define ADIS_PAGE_SIZE 0x80
+#define ADIS_REG_PAGE_ID 0x00
+
+struct adis;
+
+/**
+ * struct adis_data - ADIS chip variant specific data
+ * @read_delay: SPI delay for read operations in us
+ * @write_delay: SPI delay for write operations in us
+ * @glob_cmd_reg: Register address of the GLOB_CMD register
+ * @msc_ctrl_reg: Register address of the MSC_CTRL register
+ * @diag_stat_reg: Register address of the DIAG_STAT register
+ * @status_error_msgs: Array of error messgaes
+ * @status_error_mask:
+ */
+struct adis_data {
+ unsigned int read_delay;
+ unsigned int write_delay;
+
+ unsigned int glob_cmd_reg;
+ unsigned int msc_ctrl_reg;
+ unsigned int diag_stat_reg;
+
+ unsigned int self_test_mask;
+ unsigned int startup_delay;
+
+ const char * const *status_error_msgs;
+ unsigned int status_error_mask;
+
+ int (*enable_irq)(struct adis *adis, bool enable);
+
+ bool has_paging;
+};
+
+struct adis {
+ struct spi_device *spi;
+ struct iio_trigger *trig;
+
+ const struct adis_data *data;
+
+ struct mutex txrx_lock;
+ struct spi_message msg;
+ struct spi_transfer *xfer;
+ unsigned int current_page;
+ void *buffer;
+
+ uint8_t tx[10] ____cacheline_aligned;
+ uint8_t rx[4];
+};
+
+int adis_init(struct adis *adis, struct iio_dev *indio_dev,
+ struct spi_device *spi, const struct adis_data *data);
+int adis_reset(struct adis *adis);
+
+int adis_write_reg(struct adis *adis, unsigned int reg,
+ unsigned int val, unsigned int size);
+int adis_read_reg(struct adis *adis, unsigned int reg,
+ unsigned int *val, unsigned int size);
+
+/**
+ * adis_write_reg_8() - Write single byte to a register
+ * @adis: The adis device
+ * @reg: The address of the register to be written
+ * @value: The value to write
+ */
+static inline int adis_write_reg_8(struct adis *adis, unsigned int reg,
+ uint8_t val)
+{
+ return adis_write_reg(adis, reg, val, 1);
+}
+
+/**
+ * adis_write_reg_16() - Write 2 bytes to a pair of registers
+ * @adis: The adis device
+ * @reg: The address of the lower of the two registers
+ * @value: Value to be written
+ */
+static inline int adis_write_reg_16(struct adis *adis, unsigned int reg,
+ uint16_t val)
+{
+ return adis_write_reg(adis, reg, val, 2);
+}
+
+/**
+ * adis_write_reg_32() - write 4 bytes to four registers
+ * @adis: The adis device
+ * @reg: The address of the lower of the four register
+ * @value: Value to be written
+ */
+static inline int adis_write_reg_32(struct adis *adis, unsigned int reg,
+ uint32_t val)
+{
+ return adis_write_reg(adis, reg, val, 4);
+}
+
+/**
+ * adis_read_reg_16() - read 2 bytes from a 16-bit register
+ * @adis: The adis device
+ * @reg: The address of the lower of the two registers
+ * @val: The value read back from the device
+ */
+static inline int adis_read_reg_16(struct adis *adis, unsigned int reg,
+ uint16_t *val)
+{
+ unsigned int tmp;
+ int ret;
+
+ ret = adis_read_reg(adis, reg, &tmp, 2);
+ *val = tmp;
+
+ return ret;
+}
+
+/**
+ * adis_read_reg_32() - read 4 bytes from a 32-bit register
+ * @adis: The adis device
+ * @reg: The address of the lower of the two registers
+ * @val: The value read back from the device
+ */
+static inline int adis_read_reg_32(struct adis *adis, unsigned int reg,
+ uint32_t *val)
+{
+ unsigned int tmp;
+ int ret;
+
+ ret = adis_read_reg(adis, reg, &tmp, 4);
+ *val = tmp;
+
+ return ret;
+}
+
+int adis_enable_irq(struct adis *adis, bool enable);
+int adis_check_status(struct adis *adis);
+
+int adis_initial_startup(struct adis *adis);
+
+int adis_single_conversion(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan, unsigned int error_mask,
+ int *val);
+
+#define ADIS_VOLTAGE_CHAN(addr, si, chan, name, bits) { \
+ .type = IIO_VOLTAGE, \
+ .indexed = 1, \
+ .channel = (chan), \
+ .extend_name = name, \
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT | \
+ IIO_CHAN_INFO_SCALE_SEPARATE_BIT, \
+ .address = (addr), \
+ .scan_index = (si), \
+ .scan_type = { \
+ .sign = 'u', \
+ .realbits = (bits), \
+ .storagebits = 16, \
+ .endianness = IIO_BE, \
+ }, \
+}
+
+#define ADIS_SUPPLY_CHAN(addr, si, bits) \
+ ADIS_VOLTAGE_CHAN(addr, si, 0, "supply", bits)
+
+#define ADIS_AUX_ADC_CHAN(addr, si, bits) \
+ ADIS_VOLTAGE_CHAN(addr, si, 1, NULL, bits)
+
+#define ADIS_TEMP_CHAN(addr, si, bits) { \
+ .type = IIO_TEMP, \
+ .indexed = 1, \
+ .channel = 0, \
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT | \
+ IIO_CHAN_INFO_SCALE_SEPARATE_BIT | \
+ IIO_CHAN_INFO_OFFSET_SEPARATE_BIT, \
+ .address = (addr), \
+ .scan_index = (si), \
+ .scan_type = { \
+ .sign = 'u', \
+ .realbits = (bits), \
+ .storagebits = 16, \
+ .endianness = IIO_BE, \
+ }, \
+}
+
+#define ADIS_MOD_CHAN(_type, mod, addr, si, info, bits) { \
+ .type = (_type), \
+ .modified = 1, \
+ .channel2 = IIO_MOD_ ## mod, \
+ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT | \
+ IIO_CHAN_INFO_SCALE_SHARED_BIT | \
+ info, \
+ .address = (addr), \
+ .scan_index = (si), \
+ .scan_type = { \
+ .sign = 's', \
+ .realbits = (bits), \
+ .storagebits = 16, \
+ .endianness = IIO_BE, \
+ }, \
+}
+
+#define ADIS_ACCEL_CHAN(mod, addr, si, info, bits) \
+ ADIS_MOD_CHAN(IIO_ACCEL, mod, addr, si, info, bits)
+
+#define ADIS_GYRO_CHAN(mod, addr, si, info, bits) \
+ ADIS_MOD_CHAN(IIO_ANGL_VEL, mod, addr, si, info, bits)
+
+#define ADIS_INCLI_CHAN(mod, addr, si, info, bits) \
+ ADIS_MOD_CHAN(IIO_INCLI, mod, addr, si, info, bits)
+
+#define ADIS_ROT_CHAN(mod, addr, si, info, bits) \
+ ADIS_MOD_CHAN(IIO_ROT, mod, addr, si, info, bits)
+
+#ifdef CONFIG_IIO_ADIS_LIB_BUFFER
+
+int adis_setup_buffer_and_trigger(struct adis *adis,
+ struct iio_dev *indio_dev, irqreturn_t (*trigger_handler)(int, void *));
+void adis_cleanup_buffer_and_trigger(struct adis *adis,
+ struct iio_dev *indio_dev);
+
+int adis_probe_trigger(struct adis *adis, struct iio_dev *indio_dev);
+void adis_remove_trigger(struct adis *adis);
+
+int adis_update_scan_mode(struct iio_dev *indio_dev,
+ const unsigned long *scan_mask);
+
+#else /* CONFIG_IIO_BUFFER */
+
+static inline int adis_setup_buffer_and_trigger(struct adis *adis,
+ struct iio_dev *indio_dev, irqreturn_t (*trigger_handler)(int, void *))
+{
+ return 0;
+}
+
+static inline void adis_cleanup_buffer_and_trigger(struct adis *adis,
+ struct iio_dev *indio_dev)
+{
+}
+
+static inline int adis_probe_trigger(struct adis *adis,
+ struct iio_dev *indio_dev)
+{
+ return 0;
+}
+
+static inline void adis_remove_trigger(struct adis *adis)
+{
+}
+
+#define adis_update_scan_mode NULL
+
+#endif /* CONFIG_IIO_BUFFER */
+
+#ifdef CONFIG_DEBUG_FS
+
+int adis_debugfs_reg_access(struct iio_dev *indio_dev,
+ unsigned int reg, unsigned int writeval, unsigned int *readval);
+
+#else
+
+#define adis_debugfs_reg_access NULL
+
+#endif
+
+#endif
IIO_CAPACITANCE,
IIO_ALTVOLTAGE,
IIO_CCT,
+ IIO_PRESSURE,
};
enum iio_modifier {
--- /dev/null
+/*
+ * AD7298 SPI ADC driver
+ *
+ * Copyright 2011 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2.
+ */
+
+#ifndef __LINUX_PLATFORM_DATA_AD7298_H__
+#define __LINUX_PLATFORM_DATA_AD7298_H__
+
+/**
+ * struct ad7298_platform_data - Platform data for the ad7298 ADC driver
+ * @ext_ref: Whether to use an external reference voltage.
+ **/
+struct ad7298_platform_data {
+ bool ext_ref;
+};
+
+#endif /* IIO_ADC_AD7298_H_ */
projects / firefly-linux-kernel-4.4.55.git / commitdiff