Generalize naming to allow other frequency synthesis techniques as well.
No functional changes.
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
source "drivers/staging/iio/addac/Kconfig"
source "drivers/staging/iio/cdc/Kconfig"
source "drivers/staging/iio/dac/Kconfig"
-source "drivers/staging/iio/dds/Kconfig"
+source "drivers/staging/iio/frequency/Kconfig"
source "drivers/staging/iio/gyro/Kconfig"
source "drivers/staging/iio/impedance-analyzer/Kconfig"
source "drivers/staging/iio/imu/Kconfig"
obj-y += addac/
obj-y += cdc/
obj-y += dac/
-obj-y += dds/
+obj-y += frequency/
obj-y += gyro/
obj-y += impedance-analyzer/
obj-y += imu/
+++ /dev/null
-#
-# Direct Digital Synthesis drivers
-#
-menu "Direct Digital Synthesis"
-
-config AD5930
- tristate "Analog Devices ad5930/5932 driver"
- depends on SPI
- help
- Say yes here to build support for Analog Devices DDS chip
- ad5930/ad5932, provides direct access via sysfs.
-
-config AD9832
- tristate "Analog Devices ad9832/5 driver"
- depends on SPI
- help
- Say yes here to build support for Analog Devices DDS chip
- AD9832 and AD9835, provides direct access via sysfs.
-
- To compile this driver as a module, choose M here: the
- module will be called ad9832.
-
-config AD9834
- tristate "Analog Devices AD9833/4/7/8 driver"
- depends on SPI
- help
- Say yes here to build support for Analog Devices DDS chip
- AD9833, AD9834, AD9837 and AD9838, provides direct access via sysfs.
-
- To compile this driver as a module, choose M here: the
- module will be called ad9834.
-
-config AD9850
- tristate "Analog Devices ad9850/1 driver"
- depends on SPI
- help
- Say yes here to build support for Analog Devices DDS chip
- ad9850/1, provides direct access via sysfs.
-
-config AD9852
- tristate "Analog Devices ad9852/4 driver"
- depends on SPI
- help
- Say yes here to build support for Analog Devices DDS chip
- ad9852/4, provides direct access via sysfs.
-
-config AD9910
- tristate "Analog Devices ad9910 driver"
- depends on SPI
- help
- Say yes here to build support for Analog Devices DDS chip
- ad9910, provides direct access via sysfs.
-
-config AD9951
- tristate "Analog Devices ad9951 driver"
- depends on SPI
- help
- Say yes here to build support for Analog Devices DDS chip
- ad9951, provides direct access via sysfs.
-
-endmenu
+++ /dev/null
-#
-# Makefile for Direct Digital Synthesis drivers
-#
-
-obj-$(CONFIG_AD5930) += ad5930.o
-obj-$(CONFIG_AD9832) += ad9832.o
-obj-$(CONFIG_AD9834) += ad9834.o
-obj-$(CONFIG_AD9850) += ad9850.o
-obj-$(CONFIG_AD9852) += ad9852.o
-obj-$(CONFIG_AD9910) += ad9910.o
-obj-$(CONFIG_AD9951) += ad9951.o
+++ /dev/null
-/*
- * Driver for ADI Direct Digital Synthesis ad5930
- *
- * Copyright (c) 2010-2010 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/types.h>
-#include <linux/mutex.h>
-#include <linux/device.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>
-
-#define DRV_NAME "ad5930"
-
-#define value_mask (u16)0xf000
-#define addr_shift 12
-
-/* Register format: 4 bits addr + 12 bits value */
-struct ad5903_config {
- u16 control;
- u16 incnum;
- u16 frqdelt[2];
- u16 incitvl;
- u16 buritvl;
- u16 strtfrq[2];
-};
-
-struct ad5930_state {
- struct mutex lock;
- struct spi_device *sdev;
-};
-
-static ssize_t ad5930_set_parameter(struct device *dev,
- struct device_attribute *attr,
- const char *buf,
- size_t len)
-{
- struct spi_message msg;
- struct spi_transfer xfer;
- int ret;
- struct ad5903_config *config = (struct ad5903_config *)buf;
- struct iio_dev *idev = dev_get_drvdata(dev);
- struct ad5930_state *st = iio_priv(idev);
-
- config->control = (config->control & ~value_mask);
- config->incnum = (config->control & ~value_mask) | (1 << addr_shift);
- config->frqdelt[0] = (config->control & ~value_mask) | (2 << addr_shift);
- config->frqdelt[1] = (config->control & ~value_mask) | 3 << addr_shift;
- config->incitvl = (config->control & ~value_mask) | 4 << addr_shift;
- config->buritvl = (config->control & ~value_mask) | 8 << addr_shift;
- config->strtfrq[0] = (config->control & ~value_mask) | 0xc << addr_shift;
- config->strtfrq[1] = (config->control & ~value_mask) | 0xd << addr_shift;
-
- xfer.len = len;
- xfer.tx_buf = config;
- mutex_lock(&st->lock);
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-error_ret:
- mutex_unlock(&st->lock);
-
- return ret ? ret : len;
-}
-
-static IIO_DEVICE_ATTR(dds, S_IWUSR, NULL, ad5930_set_parameter, 0);
-
-static struct attribute *ad5930_attributes[] = {
- &iio_dev_attr_dds.dev_attr.attr,
- NULL,
-};
-
-static const struct attribute_group ad5930_attribute_group = {
- .attrs = ad5930_attributes,
-};
-
-static const struct iio_info ad5930_info = {
- .attrs = &ad5930_attribute_group,
- .driver_module = THIS_MODULE,
-};
-
-static int __devinit ad5930_probe(struct spi_device *spi)
-{
- struct ad5930_state *st;
- struct iio_dev *idev;
- int ret = 0;
-
- idev = iio_device_alloc(sizeof(*st));
- if (idev == NULL) {
- ret = -ENOMEM;
- goto error_ret;
- }
- spi_set_drvdata(spi, idev);
- st = iio_priv(idev);
-
- mutex_init(&st->lock);
- st->sdev = spi;
- idev->dev.parent = &spi->dev;
- idev->info = &ad5930_info;
- idev->modes = INDIO_DIRECT_MODE;
-
- ret = iio_device_register(idev);
- if (ret)
- goto error_free_dev;
- spi->max_speed_hz = 2000000;
- spi->mode = SPI_MODE_3;
- spi->bits_per_word = 16;
- spi_setup(spi);
-
- return 0;
-
-error_free_dev:
- iio_device_free(idev);
-error_ret:
- return ret;
-}
-
-static int __devexit ad5930_remove(struct spi_device *spi)
-{
- iio_device_unregister(spi_get_drvdata(spi));
- iio_device_free(spi_get_drvdata(spi));
-
- return 0;
-}
-
-static struct spi_driver ad5930_driver = {
- .driver = {
- .name = DRV_NAME,
- .owner = THIS_MODULE,
- },
- .probe = ad5930_probe,
- .remove = __devexit_p(ad5930_remove),
-};
-module_spi_driver(ad5930_driver);
-
-MODULE_AUTHOR("Cliff Cai");
-MODULE_DESCRIPTION("Analog Devices ad5930 driver");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("spi:" DRV_NAME);
+++ /dev/null
-/*
- * AD9832 SPI DDS 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/module.h>
-#include <asm/div64.h>
-
-#include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
-#include "dds.h"
-
-#include "ad9832.h"
-
-static unsigned long ad9832_calc_freqreg(unsigned long mclk, unsigned long fout)
-{
- unsigned long long freqreg = (u64) fout *
- (u64) ((u64) 1L << AD9832_FREQ_BITS);
- do_div(freqreg, mclk);
- return freqreg;
-}
-
-static int ad9832_write_frequency(struct ad9832_state *st,
- unsigned addr, unsigned long fout)
-{
- unsigned long regval;
-
- if (fout > (st->mclk / 2))
- return -EINVAL;
-
- regval = ad9832_calc_freqreg(st->mclk, fout);
-
- st->freq_data[0] = cpu_to_be16((AD9832_CMD_FRE8BITSW << CMD_SHIFT) |
- (addr << ADD_SHIFT) |
- ((regval >> 24) & 0xFF));
- st->freq_data[1] = cpu_to_be16((AD9832_CMD_FRE16BITSW << CMD_SHIFT) |
- ((addr - 1) << ADD_SHIFT) |
- ((regval >> 16) & 0xFF));
- st->freq_data[2] = cpu_to_be16((AD9832_CMD_FRE8BITSW << CMD_SHIFT) |
- ((addr - 2) << ADD_SHIFT) |
- ((regval >> 8) & 0xFF));
- st->freq_data[3] = cpu_to_be16((AD9832_CMD_FRE16BITSW << CMD_SHIFT) |
- ((addr - 3) << ADD_SHIFT) |
- ((regval >> 0) & 0xFF));
-
- return spi_sync(st->spi, &st->freq_msg);
-}
-
-static int ad9832_write_phase(struct ad9832_state *st,
- unsigned long addr, unsigned long phase)
-{
- if (phase > (1 << AD9832_PHASE_BITS))
- return -EINVAL;
-
- st->phase_data[0] = cpu_to_be16((AD9832_CMD_PHA8BITSW << CMD_SHIFT) |
- (addr << ADD_SHIFT) |
- ((phase >> 8) & 0xFF));
- st->phase_data[1] = cpu_to_be16((AD9832_CMD_PHA16BITSW << CMD_SHIFT) |
- ((addr - 1) << ADD_SHIFT) |
- (phase & 0xFF));
-
- return spi_sync(st->spi, &st->phase_msg);
-}
-
-static ssize_t ad9832_write(struct device *dev,
- struct device_attribute *attr,
- const char *buf,
- size_t len)
-{
- struct iio_dev *indio_dev = dev_get_drvdata(dev);
- struct ad9832_state *st = iio_priv(indio_dev);
- struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
- int ret;
- long val;
-
- ret = strict_strtoul(buf, 10, &val);
- if (ret)
- goto error_ret;
-
- mutex_lock(&indio_dev->mlock);
- switch ((u32) this_attr->address) {
- case AD9832_FREQ0HM:
- case AD9832_FREQ1HM:
- ret = ad9832_write_frequency(st, this_attr->address, val);
- break;
- case AD9832_PHASE0H:
- case AD9832_PHASE1H:
- case AD9832_PHASE2H:
- case AD9832_PHASE3H:
- ret = ad9832_write_phase(st, this_attr->address, val);
- break;
- case AD9832_PINCTRL_EN:
- if (val)
- st->ctrl_ss &= ~AD9832_SELSRC;
- else
- st->ctrl_ss |= AD9832_SELSRC;
- st->data = cpu_to_be16((AD9832_CMD_SYNCSELSRC << CMD_SHIFT) |
- st->ctrl_ss);
- ret = spi_sync(st->spi, &st->msg);
- break;
- case AD9832_FREQ_SYM:
- if (val == 1)
- st->ctrl_fp |= AD9832_FREQ;
- else if (val == 0)
- st->ctrl_fp &= ~AD9832_FREQ;
- else {
- ret = -EINVAL;
- break;
- }
- st->data = cpu_to_be16((AD9832_CMD_FPSELECT << CMD_SHIFT) |
- st->ctrl_fp);
- ret = spi_sync(st->spi, &st->msg);
- break;
- case AD9832_PHASE_SYM:
- if (val < 0 || val > 3) {
- ret = -EINVAL;
- break;
- }
-
- st->ctrl_fp &= ~AD9832_PHASE(3);
- st->ctrl_fp |= AD9832_PHASE(val);
-
- st->data = cpu_to_be16((AD9832_CMD_FPSELECT << CMD_SHIFT) |
- st->ctrl_fp);
- ret = spi_sync(st->spi, &st->msg);
- break;
- case AD9832_OUTPUT_EN:
- if (val)
- st->ctrl_src &= ~(AD9832_RESET | AD9832_SLEEP |
- AD9832_CLR);
- else
- st->ctrl_src |= AD9832_RESET;
-
- st->data = cpu_to_be16((AD9832_CMD_SLEEPRESCLR << CMD_SHIFT) |
- st->ctrl_src);
- ret = spi_sync(st->spi, &st->msg);
- break;
- default:
- ret = -ENODEV;
- }
- mutex_unlock(&indio_dev->mlock);
-
-error_ret:
- return ret ? ret : len;
-}
-
-/**
- * see dds.h for further information
- */
-
-static IIO_DEV_ATTR_FREQ(0, 0, S_IWUSR, NULL, ad9832_write, AD9832_FREQ0HM);
-static IIO_DEV_ATTR_FREQ(0, 1, S_IWUSR, NULL, ad9832_write, AD9832_FREQ1HM);
-static IIO_DEV_ATTR_FREQSYMBOL(0, S_IWUSR, NULL, ad9832_write, AD9832_FREQ_SYM);
-static IIO_CONST_ATTR_FREQ_SCALE(0, "1"); /* 1Hz */
-
-static IIO_DEV_ATTR_PHASE(0, 0, S_IWUSR, NULL, ad9832_write, AD9832_PHASE0H);
-static IIO_DEV_ATTR_PHASE(0, 1, S_IWUSR, NULL, ad9832_write, AD9832_PHASE1H);
-static IIO_DEV_ATTR_PHASE(0, 2, S_IWUSR, NULL, ad9832_write, AD9832_PHASE2H);
-static IIO_DEV_ATTR_PHASE(0, 3, S_IWUSR, NULL, ad9832_write, AD9832_PHASE3H);
-static IIO_DEV_ATTR_PHASESYMBOL(0, S_IWUSR, NULL,
- ad9832_write, AD9832_PHASE_SYM);
-static IIO_CONST_ATTR_PHASE_SCALE(0, "0.0015339808"); /* 2PI/2^12 rad*/
-
-static IIO_DEV_ATTR_PINCONTROL_EN(0, S_IWUSR, NULL,
- ad9832_write, AD9832_PINCTRL_EN);
-static IIO_DEV_ATTR_OUT_ENABLE(0, S_IWUSR, NULL,
- ad9832_write, AD9832_OUTPUT_EN);
-
-static struct attribute *ad9832_attributes[] = {
- &iio_dev_attr_dds0_freq0.dev_attr.attr,
- &iio_dev_attr_dds0_freq1.dev_attr.attr,
- &iio_const_attr_dds0_freq_scale.dev_attr.attr,
- &iio_dev_attr_dds0_phase0.dev_attr.attr,
- &iio_dev_attr_dds0_phase1.dev_attr.attr,
- &iio_dev_attr_dds0_phase2.dev_attr.attr,
- &iio_dev_attr_dds0_phase3.dev_attr.attr,
- &iio_const_attr_dds0_phase_scale.dev_attr.attr,
- &iio_dev_attr_dds0_pincontrol_en.dev_attr.attr,
- &iio_dev_attr_dds0_freqsymbol.dev_attr.attr,
- &iio_dev_attr_dds0_phasesymbol.dev_attr.attr,
- &iio_dev_attr_dds0_out_enable.dev_attr.attr,
- NULL,
-};
-
-static const struct attribute_group ad9832_attribute_group = {
- .attrs = ad9832_attributes,
-};
-
-static const struct iio_info ad9832_info = {
- .attrs = &ad9832_attribute_group,
- .driver_module = THIS_MODULE,
-};
-
-static int __devinit ad9832_probe(struct spi_device *spi)
-{
- struct ad9832_platform_data *pdata = spi->dev.platform_data;
- struct iio_dev *indio_dev;
- struct ad9832_state *st;
- struct regulator *reg;
- int ret;
-
- if (!pdata) {
- dev_dbg(&spi->dev, "no platform data?\n");
- return -ENODEV;
- }
-
- reg = regulator_get(&spi->dev, "vcc");
- if (!IS_ERR(reg)) {
- ret = regulator_enable(reg);
- if (ret)
- goto error_put_reg;
- }
-
- indio_dev = iio_device_alloc(sizeof(*st));
- if (indio_dev == NULL) {
- ret = -ENOMEM;
- goto error_disable_reg;
- }
- spi_set_drvdata(spi, indio_dev);
- st = iio_priv(indio_dev);
- st->reg = reg;
- st->mclk = pdata->mclk;
- st->spi = spi;
-
- indio_dev->dev.parent = &spi->dev;
- indio_dev->name = spi_get_device_id(spi)->name;
- indio_dev->info = &ad9832_info;
- indio_dev->modes = INDIO_DIRECT_MODE;
-
- /* Setup default messages */
-
- st->xfer.tx_buf = &st->data;
- st->xfer.len = 2;
-
- spi_message_init(&st->msg);
- spi_message_add_tail(&st->xfer, &st->msg);
-
- st->freq_xfer[0].tx_buf = &st->freq_data[0];
- st->freq_xfer[0].len = 2;
- st->freq_xfer[0].cs_change = 1;
- st->freq_xfer[1].tx_buf = &st->freq_data[1];
- st->freq_xfer[1].len = 2;
- st->freq_xfer[1].cs_change = 1;
- st->freq_xfer[2].tx_buf = &st->freq_data[2];
- st->freq_xfer[2].len = 2;
- st->freq_xfer[2].cs_change = 1;
- st->freq_xfer[3].tx_buf = &st->freq_data[3];
- st->freq_xfer[3].len = 2;
-
- spi_message_init(&st->freq_msg);
- spi_message_add_tail(&st->freq_xfer[0], &st->freq_msg);
- spi_message_add_tail(&st->freq_xfer[1], &st->freq_msg);
- spi_message_add_tail(&st->freq_xfer[2], &st->freq_msg);
- spi_message_add_tail(&st->freq_xfer[3], &st->freq_msg);
-
- st->phase_xfer[0].tx_buf = &st->phase_data[0];
- st->phase_xfer[0].len = 2;
- st->phase_xfer[0].cs_change = 1;
- st->phase_xfer[1].tx_buf = &st->phase_data[1];
- st->phase_xfer[1].len = 2;
-
- spi_message_init(&st->phase_msg);
- spi_message_add_tail(&st->phase_xfer[0], &st->phase_msg);
- spi_message_add_tail(&st->phase_xfer[1], &st->phase_msg);
-
- st->ctrl_src = AD9832_SLEEP | AD9832_RESET | AD9832_CLR;
- st->data = cpu_to_be16((AD9832_CMD_SLEEPRESCLR << CMD_SHIFT) |
- st->ctrl_src);
- ret = spi_sync(st->spi, &st->msg);
- if (ret) {
- dev_err(&spi->dev, "device init failed\n");
- goto error_free_device;
- }
-
- ret = ad9832_write_frequency(st, AD9832_FREQ0HM, pdata->freq0);
- if (ret)
- goto error_free_device;
-
- ret = ad9832_write_frequency(st, AD9832_FREQ1HM, pdata->freq1);
- if (ret)
- goto error_free_device;
-
- ret = ad9832_write_phase(st, AD9832_PHASE0H, pdata->phase0);
- if (ret)
- goto error_free_device;
-
- ret = ad9832_write_phase(st, AD9832_PHASE1H, pdata->phase1);
- if (ret)
- goto error_free_device;
-
- ret = ad9832_write_phase(st, AD9832_PHASE2H, pdata->phase2);
- if (ret)
- goto error_free_device;
-
- ret = ad9832_write_phase(st, AD9832_PHASE3H, pdata->phase3);
- if (ret)
- goto error_free_device;
-
- ret = iio_device_register(indio_dev);
- if (ret)
- goto error_free_device;
-
- return 0;
-
-error_free_device:
- iio_device_free(indio_dev);
-error_disable_reg:
- if (!IS_ERR(reg))
- regulator_disable(reg);
-error_put_reg:
- if (!IS_ERR(reg))
- regulator_put(reg);
-
- return ret;
-}
-
-static int __devexit ad9832_remove(struct spi_device *spi)
-{
- struct iio_dev *indio_dev = spi_get_drvdata(spi);
- struct ad9832_state *st = iio_priv(indio_dev);
-
- iio_device_unregister(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 ad9832_id[] = {
- {"ad9832", 0},
- {"ad9835", 0},
- {}
-};
-MODULE_DEVICE_TABLE(spi, ad9832_id);
-
-static struct spi_driver ad9832_driver = {
- .driver = {
- .name = "ad9832",
- .owner = THIS_MODULE,
- },
- .probe = ad9832_probe,
- .remove = __devexit_p(ad9832_remove),
- .id_table = ad9832_id,
-};
-module_spi_driver(ad9832_driver);
-
-MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
-MODULE_DESCRIPTION("Analog Devices AD9832/AD9835 DDS");
-MODULE_LICENSE("GPL v2");
+++ /dev/null
-/*
- * AD9832 SPI DDS driver
- *
- * Copyright 2011 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later.
- */
-#ifndef IIO_DDS_AD9832_H_
-#define IIO_DDS_AD9832_H_
-
-/* Registers */
-
-#define AD9832_FREQ0LL 0x0
-#define AD9832_FREQ0HL 0x1
-#define AD9832_FREQ0LM 0x2
-#define AD9832_FREQ0HM 0x3
-#define AD9832_FREQ1LL 0x4
-#define AD9832_FREQ1HL 0x5
-#define AD9832_FREQ1LM 0x6
-#define AD9832_FREQ1HM 0x7
-#define AD9832_PHASE0L 0x8
-#define AD9832_PHASE0H 0x9
-#define AD9832_PHASE1L 0xA
-#define AD9832_PHASE1H 0xB
-#define AD9832_PHASE2L 0xC
-#define AD9832_PHASE2H 0xD
-#define AD9832_PHASE3L 0xE
-#define AD9832_PHASE3H 0xF
-
-#define AD9832_PHASE_SYM 0x10
-#define AD9832_FREQ_SYM 0x11
-#define AD9832_PINCTRL_EN 0x12
-#define AD9832_OUTPUT_EN 0x13
-
-/* Command Control Bits */
-
-#define AD9832_CMD_PHA8BITSW 0x1
-#define AD9832_CMD_PHA16BITSW 0x0
-#define AD9832_CMD_FRE8BITSW 0x3
-#define AD9832_CMD_FRE16BITSW 0x2
-#define AD9832_CMD_FPSELECT 0x6
-#define AD9832_CMD_SYNCSELSRC 0x8
-#define AD9832_CMD_SLEEPRESCLR 0xC
-
-#define AD9832_FREQ (1 << 11)
-#define AD9832_PHASE(x) (((x) & 3) << 9)
-#define AD9832_SYNC (1 << 13)
-#define AD9832_SELSRC (1 << 12)
-#define AD9832_SLEEP (1 << 13)
-#define AD9832_RESET (1 << 12)
-#define AD9832_CLR (1 << 11)
-#define CMD_SHIFT 12
-#define ADD_SHIFT 8
-#define AD9832_FREQ_BITS 32
-#define AD9832_PHASE_BITS 12
-#define RES_MASK(bits) ((1 << (bits)) - 1)
-
-/**
- * struct ad9832_state - driver instance specific data
- * @spi: spi_device
- * @reg: supply regulator
- * @mclk: external master clock
- * @ctrl_fp: cached frequency/phase control word
- * @ctrl_ss: cached sync/selsrc control word
- * @ctrl_src: cached sleep/reset/clr word
- * @xfer: default spi transfer
- * @msg: default spi message
- * @freq_xfer: tuning word spi transfer
- * @freq_msg: tuning word spi message
- * @phase_xfer: tuning word spi transfer
- * @phase_msg: tuning word spi message
- * @data: spi transmit buffer
- * @phase_data: tuning word spi transmit buffer
- * @freq_data: tuning word spi transmit buffer
- */
-
-struct ad9832_state {
- struct spi_device *spi;
- struct regulator *reg;
- unsigned long mclk;
- unsigned short ctrl_fp;
- unsigned short ctrl_ss;
- unsigned short ctrl_src;
- struct spi_transfer xfer;
- struct spi_message msg;
- struct spi_transfer freq_xfer[4];
- struct spi_message freq_msg;
- struct spi_transfer phase_xfer[2];
- struct spi_message phase_msg;
- /*
- * DMA (thus cache coherency maintenance) requires the
- * transfer buffers to live in their own cache lines.
- */
- union {
- unsigned short freq_data[4]____cacheline_aligned;
- unsigned short phase_data[2];
- unsigned short data;
- };
-};
-
-/*
- * TODO: struct ad9832_platform_data needs to go into include/linux/iio
- */
-
-/**
- * struct ad9832_platform_data - platform specific information
- * @mclk: master clock in Hz
- * @freq0: power up freq0 tuning word in Hz
- * @freq1: power up freq1 tuning word in Hz
- * @phase0: power up phase0 value [0..4095] correlates with 0..2PI
- * @phase1: power up phase1 value [0..4095] correlates with 0..2PI
- * @phase2: power up phase2 value [0..4095] correlates with 0..2PI
- * @phase3: power up phase3 value [0..4095] correlates with 0..2PI
- */
-
-struct ad9832_platform_data {
- unsigned long mclk;
- unsigned long freq0;
- unsigned long freq1;
- unsigned short phase0;
- unsigned short phase1;
- unsigned short phase2;
- unsigned short phase3;
-};
-
-#endif /* IIO_DDS_AD9832_H_ */
+++ /dev/null
-/*
- * AD9833/AD9834/AD9837/AD9838 SPI DDS driver
- *
- * Copyright 2010-2011 Analog Devices Inc.
- *
- * Licensed under the GPL-2.
- */
-
-#include <linux/interrupt.h>
-#include <linux/workqueue.h>
-#include <linux/device.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/sysfs.h>
-#include <linux/list.h>
-#include <linux/spi/spi.h>
-#include <linux/regulator/consumer.h>
-#include <linux/err.h>
-#include <linux/module.h>
-#include <asm/div64.h>
-
-#include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
-#include "dds.h"
-
-#include "ad9834.h"
-
-static unsigned int ad9834_calc_freqreg(unsigned long mclk, unsigned long fout)
-{
- unsigned long long freqreg = (u64) fout * (u64) (1 << AD9834_FREQ_BITS);
- do_div(freqreg, mclk);
- return freqreg;
-}
-
-static int ad9834_write_frequency(struct ad9834_state *st,
- unsigned long addr, unsigned long fout)
-{
- unsigned long regval;
-
- if (fout > (st->mclk / 2))
- return -EINVAL;
-
- regval = ad9834_calc_freqreg(st->mclk, fout);
-
- st->freq_data[0] = cpu_to_be16(addr | (regval &
- RES_MASK(AD9834_FREQ_BITS / 2)));
- st->freq_data[1] = cpu_to_be16(addr | ((regval >>
- (AD9834_FREQ_BITS / 2)) &
- RES_MASK(AD9834_FREQ_BITS / 2)));
-
- return spi_sync(st->spi, &st->freq_msg);
-}
-
-static int ad9834_write_phase(struct ad9834_state *st,
- unsigned long addr, unsigned long phase)
-{
- if (phase > (1 << AD9834_PHASE_BITS))
- return -EINVAL;
- st->data = cpu_to_be16(addr | phase);
-
- return spi_sync(st->spi, &st->msg);
-}
-
-static ssize_t ad9834_write(struct device *dev,
- struct device_attribute *attr,
- const char *buf,
- size_t len)
-{
- struct iio_dev *indio_dev = dev_get_drvdata(dev);
- struct ad9834_state *st = iio_priv(indio_dev);
- struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
- int ret;
- long val;
-
- ret = strict_strtoul(buf, 10, &val);
- if (ret)
- goto error_ret;
-
- mutex_lock(&indio_dev->mlock);
- switch ((u32) this_attr->address) {
- case AD9834_REG_FREQ0:
- case AD9834_REG_FREQ1:
- ret = ad9834_write_frequency(st, this_attr->address, val);
- break;
- case AD9834_REG_PHASE0:
- case AD9834_REG_PHASE1:
- ret = ad9834_write_phase(st, this_attr->address, val);
- break;
- case AD9834_OPBITEN:
- if (st->control & AD9834_MODE) {
- ret = -EINVAL; /* AD9843 reserved mode */
- break;
- }
-
- if (val)
- st->control |= AD9834_OPBITEN;
- else
- st->control &= ~AD9834_OPBITEN;
-
- st->data = cpu_to_be16(AD9834_REG_CMD | st->control);
- ret = spi_sync(st->spi, &st->msg);
- break;
- case AD9834_PIN_SW:
- if (val)
- st->control |= AD9834_PIN_SW;
- else
- st->control &= ~AD9834_PIN_SW;
- st->data = cpu_to_be16(AD9834_REG_CMD | st->control);
- ret = spi_sync(st->spi, &st->msg);
- break;
- case AD9834_FSEL:
- case AD9834_PSEL:
- if (val == 0)
- st->control &= ~(this_attr->address | AD9834_PIN_SW);
- else if (val == 1) {
- st->control |= this_attr->address;
- st->control &= ~AD9834_PIN_SW;
- } else {
- ret = -EINVAL;
- break;
- }
- st->data = cpu_to_be16(AD9834_REG_CMD | st->control);
- ret = spi_sync(st->spi, &st->msg);
- break;
- case AD9834_RESET:
- if (val)
- st->control &= ~AD9834_RESET;
- else
- st->control |= AD9834_RESET;
-
- st->data = cpu_to_be16(AD9834_REG_CMD | st->control);
- ret = spi_sync(st->spi, &st->msg);
- break;
- default:
- ret = -ENODEV;
- }
- mutex_unlock(&indio_dev->mlock);
-
-error_ret:
- return ret ? ret : len;
-}
-
-static ssize_t ad9834_store_wavetype(struct device *dev,
- struct device_attribute *attr,
- const char *buf,
- size_t len)
-{
- struct iio_dev *indio_dev = dev_get_drvdata(dev);
- struct ad9834_state *st = iio_priv(indio_dev);
- struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
- int ret = 0;
- bool is_ad9833_7 = (st->devid == ID_AD9833) || (st->devid == ID_AD9837);
-
- mutex_lock(&indio_dev->mlock);
-
- switch ((u32) this_attr->address) {
- case 0:
- if (sysfs_streq(buf, "sine")) {
- st->control &= ~AD9834_MODE;
- if (is_ad9833_7)
- st->control &= ~AD9834_OPBITEN;
- } else if (sysfs_streq(buf, "triangle")) {
- if (is_ad9833_7) {
- st->control &= ~AD9834_OPBITEN;
- st->control |= AD9834_MODE;
- } else if (st->control & AD9834_OPBITEN) {
- ret = -EINVAL; /* AD9843 reserved mode */
- } else {
- st->control |= AD9834_MODE;
- }
- } else if (is_ad9833_7 && sysfs_streq(buf, "square")) {
- st->control &= ~AD9834_MODE;
- st->control |= AD9834_OPBITEN;
- } else {
- ret = -EINVAL;
- }
-
- break;
- case 1:
- if (sysfs_streq(buf, "square") &&
- !(st->control & AD9834_MODE)) {
- st->control &= ~AD9834_MODE;
- st->control |= AD9834_OPBITEN;
- } else {
- ret = -EINVAL;
- }
- break;
- default:
- ret = -EINVAL;
- break;
- }
-
- if (!ret) {
- st->data = cpu_to_be16(AD9834_REG_CMD | st->control);
- ret = spi_sync(st->spi, &st->msg);
- }
- mutex_unlock(&indio_dev->mlock);
-
- return ret ? ret : len;
-}
-
-static ssize_t ad9834_show_out0_wavetype_available(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct iio_dev *indio_dev = dev_get_drvdata(dev);
- struct ad9834_state *st = iio_priv(indio_dev);
- char *str;
-
- if ((st->devid == ID_AD9833) || (st->devid == ID_AD9837))
- str = "sine triangle square";
- else if (st->control & AD9834_OPBITEN)
- str = "sine";
- else
- str = "sine triangle";
-
- return sprintf(buf, "%s\n", str);
-}
-
-
-static IIO_DEVICE_ATTR(dds0_out0_wavetype_available, S_IRUGO,
- ad9834_show_out0_wavetype_available, NULL, 0);
-
-static ssize_t ad9834_show_out1_wavetype_available(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct iio_dev *indio_dev = dev_get_drvdata(dev);
- struct ad9834_state *st = iio_priv(indio_dev);
- char *str;
-
- if (st->control & AD9834_MODE)
- str = "";
- else
- str = "square";
-
- return sprintf(buf, "%s\n", str);
-}
-
-static IIO_DEVICE_ATTR(dds0_out1_wavetype_available, S_IRUGO,
- ad9834_show_out1_wavetype_available, NULL, 0);
-
-/**
- * see dds.h for further information
- */
-
-static IIO_DEV_ATTR_FREQ(0, 0, S_IWUSR, NULL, ad9834_write, AD9834_REG_FREQ0);
-static IIO_DEV_ATTR_FREQ(0, 1, S_IWUSR, NULL, ad9834_write, AD9834_REG_FREQ1);
-static IIO_DEV_ATTR_FREQSYMBOL(0, S_IWUSR, NULL, ad9834_write, AD9834_FSEL);
-static IIO_CONST_ATTR_FREQ_SCALE(0, "1"); /* 1Hz */
-
-static IIO_DEV_ATTR_PHASE(0, 0, S_IWUSR, NULL, ad9834_write, AD9834_REG_PHASE0);
-static IIO_DEV_ATTR_PHASE(0, 1, S_IWUSR, NULL, ad9834_write, AD9834_REG_PHASE1);
-static IIO_DEV_ATTR_PHASESYMBOL(0, S_IWUSR, NULL, ad9834_write, AD9834_PSEL);
-static IIO_CONST_ATTR_PHASE_SCALE(0, "0.0015339808"); /* 2PI/2^12 rad*/
-
-static IIO_DEV_ATTR_PINCONTROL_EN(0, S_IWUSR, NULL,
- ad9834_write, AD9834_PIN_SW);
-static IIO_DEV_ATTR_OUT_ENABLE(0, S_IWUSR, NULL, ad9834_write, AD9834_RESET);
-static IIO_DEV_ATTR_OUTY_ENABLE(0, 1, S_IWUSR, NULL,
- ad9834_write, AD9834_OPBITEN);
-static IIO_DEV_ATTR_OUT_WAVETYPE(0, 0, ad9834_store_wavetype, 0);
-static IIO_DEV_ATTR_OUT_WAVETYPE(0, 1, ad9834_store_wavetype, 1);
-
-static struct attribute *ad9834_attributes[] = {
- &iio_dev_attr_dds0_freq0.dev_attr.attr,
- &iio_dev_attr_dds0_freq1.dev_attr.attr,
- &iio_const_attr_dds0_freq_scale.dev_attr.attr,
- &iio_dev_attr_dds0_phase0.dev_attr.attr,
- &iio_dev_attr_dds0_phase1.dev_attr.attr,
- &iio_const_attr_dds0_phase_scale.dev_attr.attr,
- &iio_dev_attr_dds0_pincontrol_en.dev_attr.attr,
- &iio_dev_attr_dds0_freqsymbol.dev_attr.attr,
- &iio_dev_attr_dds0_phasesymbol.dev_attr.attr,
- &iio_dev_attr_dds0_out_enable.dev_attr.attr,
- &iio_dev_attr_dds0_out1_enable.dev_attr.attr,
- &iio_dev_attr_dds0_out0_wavetype.dev_attr.attr,
- &iio_dev_attr_dds0_out1_wavetype.dev_attr.attr,
- &iio_dev_attr_dds0_out0_wavetype_available.dev_attr.attr,
- &iio_dev_attr_dds0_out1_wavetype_available.dev_attr.attr,
- NULL,
-};
-
-static struct attribute *ad9833_attributes[] = {
- &iio_dev_attr_dds0_freq0.dev_attr.attr,
- &iio_dev_attr_dds0_freq1.dev_attr.attr,
- &iio_const_attr_dds0_freq_scale.dev_attr.attr,
- &iio_dev_attr_dds0_phase0.dev_attr.attr,
- &iio_dev_attr_dds0_phase1.dev_attr.attr,
- &iio_const_attr_dds0_phase_scale.dev_attr.attr,
- &iio_dev_attr_dds0_freqsymbol.dev_attr.attr,
- &iio_dev_attr_dds0_phasesymbol.dev_attr.attr,
- &iio_dev_attr_dds0_out_enable.dev_attr.attr,
- &iio_dev_attr_dds0_out0_wavetype.dev_attr.attr,
- &iio_dev_attr_dds0_out0_wavetype_available.dev_attr.attr,
- NULL,
-};
-
-static const struct attribute_group ad9834_attribute_group = {
- .attrs = ad9834_attributes,
-};
-
-static const struct attribute_group ad9833_attribute_group = {
- .attrs = ad9833_attributes,
-};
-
-static const struct iio_info ad9834_info = {
- .attrs = &ad9834_attribute_group,
- .driver_module = THIS_MODULE,
-};
-
-static const struct iio_info ad9833_info = {
- .attrs = &ad9833_attribute_group,
- .driver_module = THIS_MODULE,
-};
-
-static int __devinit ad9834_probe(struct spi_device *spi)
-{
- struct ad9834_platform_data *pdata = spi->dev.platform_data;
- struct ad9834_state *st;
- struct iio_dev *indio_dev;
- struct regulator *reg;
- int ret;
-
- if (!pdata) {
- dev_dbg(&spi->dev, "no platform data?\n");
- return -ENODEV;
- }
-
- reg = regulator_get(&spi->dev, "vcc");
- if (!IS_ERR(reg)) {
- ret = regulator_enable(reg);
- if (ret)
- goto error_put_reg;
- }
-
- indio_dev = iio_device_alloc(sizeof(*st));
- if (indio_dev == NULL) {
- ret = -ENOMEM;
- goto error_disable_reg;
- }
- spi_set_drvdata(spi, indio_dev);
- st = iio_priv(indio_dev);
- st->mclk = pdata->mclk;
- st->spi = spi;
- st->devid = spi_get_device_id(spi)->driver_data;
- st->reg = reg;
- indio_dev->dev.parent = &spi->dev;
- indio_dev->name = spi_get_device_id(spi)->name;
- switch (st->devid) {
- case ID_AD9833:
- case ID_AD9837:
- indio_dev->info = &ad9833_info;
- break;
- default:
- indio_dev->info = &ad9834_info;
- break;
- }
- indio_dev->modes = INDIO_DIRECT_MODE;
-
- /* Setup default messages */
-
- st->xfer.tx_buf = &st->data;
- st->xfer.len = 2;
-
- spi_message_init(&st->msg);
- spi_message_add_tail(&st->xfer, &st->msg);
-
- st->freq_xfer[0].tx_buf = &st->freq_data[0];
- st->freq_xfer[0].len = 2;
- st->freq_xfer[0].cs_change = 1;
- st->freq_xfer[1].tx_buf = &st->freq_data[1];
- st->freq_xfer[1].len = 2;
-
- spi_message_init(&st->freq_msg);
- spi_message_add_tail(&st->freq_xfer[0], &st->freq_msg);
- spi_message_add_tail(&st->freq_xfer[1], &st->freq_msg);
-
- st->control = AD9834_B28 | AD9834_RESET;
-
- if (!pdata->en_div2)
- st->control |= AD9834_DIV2;
-
- if (!pdata->en_signbit_msb_out && (st->devid == ID_AD9834))
- st->control |= AD9834_SIGN_PIB;
-
- st->data = cpu_to_be16(AD9834_REG_CMD | st->control);
- ret = spi_sync(st->spi, &st->msg);
- if (ret) {
- dev_err(&spi->dev, "device init failed\n");
- goto error_free_device;
- }
-
- ret = ad9834_write_frequency(st, AD9834_REG_FREQ0, pdata->freq0);
- if (ret)
- goto error_free_device;
-
- ret = ad9834_write_frequency(st, AD9834_REG_FREQ1, pdata->freq1);
- if (ret)
- goto error_free_device;
-
- ret = ad9834_write_phase(st, AD9834_REG_PHASE0, pdata->phase0);
- if (ret)
- goto error_free_device;
-
- ret = ad9834_write_phase(st, AD9834_REG_PHASE1, pdata->phase1);
- if (ret)
- goto error_free_device;
-
- ret = iio_device_register(indio_dev);
- if (ret)
- goto error_free_device;
-
- return 0;
-
-error_free_device:
- iio_device_free(indio_dev);
-error_disable_reg:
- if (!IS_ERR(reg))
- regulator_disable(reg);
-error_put_reg:
- if (!IS_ERR(reg))
- regulator_put(reg);
- return ret;
-}
-
-static int __devexit ad9834_remove(struct spi_device *spi)
-{
- struct iio_dev *indio_dev = spi_get_drvdata(spi);
- struct ad9834_state *st = iio_priv(indio_dev);
-
- iio_device_unregister(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 ad9834_id[] = {
- {"ad9833", ID_AD9833},
- {"ad9834", ID_AD9834},
- {"ad9837", ID_AD9837},
- {"ad9838", ID_AD9838},
- {}
-};
-MODULE_DEVICE_TABLE(spi, ad9834_id);
-
-static struct spi_driver ad9834_driver = {
- .driver = {
- .name = "ad9834",
- .owner = THIS_MODULE,
- },
- .probe = ad9834_probe,
- .remove = __devexit_p(ad9834_remove),
- .id_table = ad9834_id,
-};
-module_spi_driver(ad9834_driver);
-
-MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
-MODULE_DESCRIPTION("Analog Devices AD9833/AD9834/AD9837/AD9838 DDS");
-MODULE_LICENSE("GPL v2");
+++ /dev/null
-/*
- * AD9833/AD9834/AD9837/AD9838 SPI DDS driver
- *
- * Copyright 2010-2011 Analog Devices Inc.
- *
- * Licensed under the GPL-2.
- */
-#ifndef IIO_DDS_AD9834_H_
-#define IIO_DDS_AD9834_H_
-
-/* Registers */
-
-#define AD9834_REG_CMD (0 << 14)
-#define AD9834_REG_FREQ0 (1 << 14)
-#define AD9834_REG_FREQ1 (2 << 14)
-#define AD9834_REG_PHASE0 (6 << 13)
-#define AD9834_REG_PHASE1 (7 << 13)
-
-/* Command Control Bits */
-
-#define AD9834_B28 (1 << 13)
-#define AD9834_HLB (1 << 12)
-#define AD9834_FSEL (1 << 11)
-#define AD9834_PSEL (1 << 10)
-#define AD9834_PIN_SW (1 << 9)
-#define AD9834_RESET (1 << 8)
-#define AD9834_SLEEP1 (1 << 7)
-#define AD9834_SLEEP12 (1 << 6)
-#define AD9834_OPBITEN (1 << 5)
-#define AD9834_SIGN_PIB (1 << 4)
-#define AD9834_DIV2 (1 << 3)
-#define AD9834_MODE (1 << 1)
-
-#define AD9834_FREQ_BITS 28
-#define AD9834_PHASE_BITS 12
-
-#define RES_MASK(bits) ((1 << (bits)) - 1)
-
-/**
- * struct ad9834_state - driver instance specific data
- * @spi: spi_device
- * @reg: supply regulator
- * @mclk: external master clock
- * @control: cached control word
- * @xfer: default spi transfer
- * @msg: default spi message
- * @freq_xfer: tuning word spi transfer
- * @freq_msg: tuning word spi message
- * @data: spi transmit buffer
- * @freq_data: tuning word spi transmit buffer
- */
-
-struct ad9834_state {
- struct spi_device *spi;
- struct regulator *reg;
- unsigned int mclk;
- unsigned short control;
- unsigned short devid;
- struct spi_transfer xfer;
- struct spi_message msg;
- struct spi_transfer freq_xfer[2];
- struct spi_message freq_msg;
-
- /*
- * DMA (thus cache coherency maintenance) requires the
- * transfer buffers to live in their own cache lines.
- */
- unsigned short data ____cacheline_aligned;
- unsigned short freq_data[2] ;
-};
-
-
-/*
- * TODO: struct ad7887_platform_data needs to go into include/linux/iio
- */
-
-/**
- * struct ad9834_platform_data - platform specific information
- * @mclk: master clock in Hz
- * @freq0: power up freq0 tuning word in Hz
- * @freq1: power up freq1 tuning word in Hz
- * @phase0: power up phase0 value [0..4095] correlates with 0..2PI
- * @phase1: power up phase1 value [0..4095] correlates with 0..2PI
- * @en_div2: digital output/2 is passed to the SIGN BIT OUT pin
- * @en_signbit_msb_out: the MSB (or MSB/2) of the DAC data is connected to the
- * SIGN BIT OUT pin. en_div2 controls whether it is the MSB
- * or MSB/2 that is output. if en_signbit_msb_out=false,
- * the on-board comparator is connected to SIGN BIT OUT
- */
-
-struct ad9834_platform_data {
- unsigned int mclk;
- unsigned int freq0;
- unsigned int freq1;
- unsigned short phase0;
- unsigned short phase1;
- bool en_div2;
- bool en_signbit_msb_out;
-};
-
-/**
- * ad9834_supported_device_ids:
- */
-
-enum ad9834_supported_device_ids {
- ID_AD9833,
- ID_AD9834,
- ID_AD9837,
- ID_AD9838,
-};
-
-#endif /* IIO_DDS_AD9834_H_ */
+++ /dev/null
-/*
- * Driver for ADI Direct Digital Synthesis ad9850
- *
- * Copyright (c) 2010-2010 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/types.h>
-#include <linux/mutex.h>
-#include <linux/device.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>
-
-#define DRV_NAME "ad9850"
-
-#define value_mask (u16)0xf000
-#define addr_shift 12
-
-/* Register format: 4 bits addr + 12 bits value */
-struct ad9850_config {
- u8 control[5];
-};
-
-struct ad9850_state {
- struct mutex lock;
- struct spi_device *sdev;
-};
-
-static ssize_t ad9850_set_parameter(struct device *dev,
- struct device_attribute *attr,
- const char *buf,
- size_t len)
-{
- struct spi_message msg;
- struct spi_transfer xfer;
- int ret;
- struct ad9850_config *config = (struct ad9850_config *)buf;
- struct iio_dev *idev = dev_get_drvdata(dev);
- struct ad9850_state *st = iio_priv(idev);
-
- xfer.len = len;
- xfer.tx_buf = config;
- mutex_lock(&st->lock);
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-error_ret:
- mutex_unlock(&st->lock);
-
- return ret ? ret : len;
-}
-
-static IIO_DEVICE_ATTR(dds, S_IWUSR, NULL, ad9850_set_parameter, 0);
-
-static struct attribute *ad9850_attributes[] = {
- &iio_dev_attr_dds.dev_attr.attr,
- NULL,
-};
-
-static const struct attribute_group ad9850_attribute_group = {
- .attrs = ad9850_attributes,
-};
-
-static const struct iio_info ad9850_info = {
- .attrs = &ad9850_attribute_group,
- .driver_module = THIS_MODULE,
-};
-
-static int __devinit ad9850_probe(struct spi_device *spi)
-{
- struct ad9850_state *st;
- struct iio_dev *idev;
- int ret = 0;
-
- idev = iio_device_alloc(sizeof(*st));
- if (idev == NULL) {
- ret = -ENOMEM;
- goto error_ret;
- }
- spi_set_drvdata(spi, idev);
- st = iio_priv(idev);
- mutex_init(&st->lock);
- st->sdev = spi;
-
- idev->dev.parent = &spi->dev;
- idev->info = &ad9850_info;
- idev->modes = INDIO_DIRECT_MODE;
-
- ret = iio_device_register(idev);
- if (ret)
- goto error_free_dev;
- spi->max_speed_hz = 2000000;
- spi->mode = SPI_MODE_3;
- spi->bits_per_word = 16;
- spi_setup(spi);
-
- return 0;
-
-error_free_dev:
- iio_device_free(idev);
-error_ret:
- return ret;
-}
-
-static int __devexit ad9850_remove(struct spi_device *spi)
-{
- iio_device_unregister(spi_get_drvdata(spi));
- iio_device_free(spi_get_drvdata(spi));
-
- return 0;
-}
-
-static struct spi_driver ad9850_driver = {
- .driver = {
- .name = DRV_NAME,
- .owner = THIS_MODULE,
- },
- .probe = ad9850_probe,
- .remove = __devexit_p(ad9850_remove),
-};
-module_spi_driver(ad9850_driver);
-
-MODULE_AUTHOR("Cliff Cai");
-MODULE_DESCRIPTION("Analog Devices ad9850 driver");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("spi:" DRV_NAME);
+++ /dev/null
-/*
- * Driver for ADI Direct Digital Synthesis ad9852
- *
- * Copyright (c) 2010 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/types.h>
-#include <linux/mutex.h>
-#include <linux/device.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>
-
-#define DRV_NAME "ad9852"
-
-#define addr_phaad1 0x0
-#define addr_phaad2 0x1
-#define addr_fretu1 0x2
-#define addr_fretu2 0x3
-#define addr_delfre 0x4
-#define addr_updclk 0x5
-#define addr_ramclk 0x6
-#define addr_contrl 0x7
-#define addr_optskm 0x8
-#define addr_optskr 0xa
-#define addr_dacctl 0xb
-
-#define COMPPD (1 << 4)
-#define REFMULT2 (1 << 2)
-#define BYPPLL (1 << 5)
-#define PLLRANG (1 << 6)
-#define IEUPCLK (1)
-#define OSKEN (1 << 5)
-
-#define read_bit (1 << 7)
-
-/* Register format: 1 byte addr + value */
-struct ad9852_config {
- u8 phajst0[3];
- u8 phajst1[3];
- u8 fretun1[6];
- u8 fretun2[6];
- u8 dltafre[6];
- u8 updtclk[5];
- u8 ramprat[4];
- u8 control[5];
- u8 outpskm[3];
- u8 outpskr[2];
- u8 daccntl[3];
-};
-
-struct ad9852_state {
- struct mutex lock;
- struct spi_device *sdev;
-};
-
-static ssize_t ad9852_set_parameter(struct device *dev,
- struct device_attribute *attr,
- const char *buf,
- size_t len)
-{
- struct spi_message msg;
- struct spi_transfer xfer;
- int ret;
- struct ad9852_config *config = (struct ad9852_config *)buf;
- struct iio_dev *idev = dev_get_drvdata(dev);
- struct ad9852_state *st = iio_priv(idev);
-
- xfer.len = 3;
- xfer.tx_buf = &config->phajst0[0];
- mutex_lock(&st->lock);
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 3;
- xfer.tx_buf = &config->phajst1[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 6;
- xfer.tx_buf = &config->fretun1[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 6;
- xfer.tx_buf = &config->fretun2[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 6;
- xfer.tx_buf = &config->dltafre[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 5;
- xfer.tx_buf = &config->updtclk[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 4;
- xfer.tx_buf = &config->ramprat[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 5;
- xfer.tx_buf = &config->control[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 3;
- xfer.tx_buf = &config->outpskm[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 2;
- xfer.tx_buf = &config->outpskr[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 3;
- xfer.tx_buf = &config->daccntl[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-error_ret:
- mutex_unlock(&st->lock);
-
- return ret ? ret : len;
-}
-
-static IIO_DEVICE_ATTR(dds, S_IWUSR, NULL, ad9852_set_parameter, 0);
-
-static void ad9852_init(struct ad9852_state *st)
-{
- struct spi_message msg;
- struct spi_transfer xfer;
- int ret;
- u8 config[5];
-
- config[0] = addr_contrl;
- config[1] = COMPPD;
- config[2] = REFMULT2 | BYPPLL | PLLRANG;
- config[3] = IEUPCLK;
- config[4] = OSKEN;
-
- mutex_lock(&st->lock);
-
- xfer.len = 5;
- xfer.tx_buf = &config;
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
-error_ret:
- mutex_unlock(&st->lock);
-
-
-
-}
-
-static struct attribute *ad9852_attributes[] = {
- &iio_dev_attr_dds.dev_attr.attr,
- NULL,
-};
-
-static const struct attribute_group ad9852_attribute_group = {
- .attrs = ad9852_attributes,
-};
-
-static const struct iio_info ad9852_info = {
- .attrs = &ad9852_attribute_group,
- .driver_module = THIS_MODULE,
-};
-
-static int __devinit ad9852_probe(struct spi_device *spi)
-{
- struct ad9852_state *st;
- struct iio_dev *idev;
- int ret = 0;
-
- idev = iio_device_alloc(sizeof(*st));
- if (idev == NULL) {
- ret = -ENOMEM;
- goto error_ret;
- }
- st = iio_priv(idev);
- spi_set_drvdata(spi, idev);
- mutex_init(&st->lock);
- st->sdev = spi;
-
- idev->dev.parent = &spi->dev;
- idev->info = &ad9852_info;
- idev->modes = INDIO_DIRECT_MODE;
-
- ret = iio_device_register(idev);
- if (ret)
- goto error_free_dev;
- spi->max_speed_hz = 2000000;
- spi->mode = SPI_MODE_3;
- spi->bits_per_word = 8;
- spi_setup(spi);
- ad9852_init(st);
-
- return 0;
-
-error_free_dev:
- iio_device_free(idev);
-
-error_ret:
- return ret;
-}
-
-static int __devexit ad9852_remove(struct spi_device *spi)
-{
- iio_device_unregister(spi_get_drvdata(spi));
- iio_device_free(spi_get_drvdata(spi));
-
- return 0;
-}
-
-static struct spi_driver ad9852_driver = {
- .driver = {
- .name = DRV_NAME,
- .owner = THIS_MODULE,
- },
- .probe = ad9852_probe,
- .remove = __devexit_p(ad9852_remove),
-};
-module_spi_driver(ad9852_driver);
-
-MODULE_AUTHOR("Cliff Cai");
-MODULE_DESCRIPTION("Analog Devices ad9852 driver");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("spi:" DRV_NAME);
+++ /dev/null
-/*
- * Driver for ADI Direct Digital Synthesis ad9910
- *
- * Copyright (c) 2010 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/types.h>
-#include <linux/mutex.h>
-#include <linux/device.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>
-
-#define DRV_NAME "ad9910"
-
-#define CFR1 0x0
-#define CFR2 0x1
-#define CFR3 0x2
-
-#define AUXDAC 0x3
-#define IOUPD 0x4
-#define FTW 0x7
-#define POW 0x8
-#define ASF 0x9
-#define MULTC 0x0A
-#define DIG_RAMPL 0x0B
-#define DIG_RAMPS 0x0C
-#define DIG_RAMPR 0x0D
-#define SIN_TONEP0 0x0E
-#define SIN_TONEP1 0x0F
-#define SIN_TONEP2 0x10
-#define SIN_TONEP3 0x11
-#define SIN_TONEP4 0x12
-#define SIN_TONEP5 0x13
-#define SIN_TONEP6 0x14
-#define SIN_TONEP7 0x15
-
-#define RAM_ENABLE (1 << 7)
-
-#define MANUAL_OSK (1 << 7)
-#define INVSIC (1 << 6)
-#define DDS_SINEOP (1)
-
-#define AUTO_OSK (1)
-#define OSKEN (1 << 1)
-#define LOAD_ARR (1 << 2)
-#define CLR_PHA (1 << 3)
-#define CLR_DIG (1 << 4)
-#define ACLR_PHA (1 << 5)
-#define ACLR_DIG (1 << 6)
-#define LOAD_LRR (1 << 7)
-
-#define LSB_FST (1)
-#define SDIO_IPT (1 << 1)
-#define EXT_PWD (1 << 3)
-#define ADAC_PWD (1 << 4)
-#define REFCLK_PWD (1 << 5)
-#define DAC_PWD (1 << 6)
-#define DIG_PWD (1 << 7)
-
-#define ENA_AMP (1)
-#define READ_FTW (1)
-#define DIGR_LOW (1 << 1)
-#define DIGR_HIGH (1 << 2)
-#define DIGR_ENA (1 << 3)
-#define SYNCCLK_ENA (1 << 6)
-#define ITER_IOUPD (1 << 7)
-
-#define TX_ENA (1 << 1)
-#define PDCLK_INV (1 << 2)
-#define PDCLK_ENB (1 << 3)
-
-#define PARA_ENA (1 << 4)
-#define SYNC_DIS (1 << 5)
-#define DATA_ASS (1 << 6)
-#define MATCH_ENA (1 << 7)
-
-#define PLL_ENA (1)
-#define PFD_RST (1 << 2)
-#define REFCLK_RST (1 << 6)
-#define REFCLK_BYP (1 << 7)
-
-/* Register format: 1 byte addr + value */
-struct ad9910_config {
- u8 auxdac[5];
- u8 ioupd[5];
- u8 ftw[5];
- u8 pow[3];
- u8 asf[5];
- u8 multc[5];
- u8 dig_rampl[9];
- u8 dig_ramps[9];
- u8 dig_rampr[5];
- u8 sin_tonep0[9];
- u8 sin_tonep1[9];
- u8 sin_tonep2[9];
- u8 sin_tonep3[9];
- u8 sin_tonep4[9];
- u8 sin_tonep5[9];
- u8 sin_tonep6[9];
- u8 sin_tonep7[9];
-};
-
-struct ad9910_state {
- struct mutex lock;
- struct spi_device *sdev;
-};
-
-static ssize_t ad9910_set_parameter(struct device *dev,
- struct device_attribute *attr,
- const char *buf,
- size_t len)
-{
- struct spi_message msg;
- struct spi_transfer xfer;
- int ret;
- struct ad9910_config *config = (struct ad9910_config *)buf;
- struct iio_dev *idev = dev_get_drvdata(dev);
- struct ad9910_state *st = iio_priv(idev);
-
- xfer.len = 5;
- xfer.tx_buf = &config->auxdac[0];
- mutex_lock(&st->lock);
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 5;
- xfer.tx_buf = &config->ioupd[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 5;
- xfer.tx_buf = &config->ftw[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 3;
- xfer.tx_buf = &config->pow[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 5;
- xfer.tx_buf = &config->asf[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 5;
- xfer.tx_buf = &config->multc[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 9;
- xfer.tx_buf = &config->dig_rampl[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 9;
- xfer.tx_buf = &config->dig_ramps[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 5;
- xfer.tx_buf = &config->dig_rampr[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 9;
- xfer.tx_buf = &config->sin_tonep0[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 9;
- xfer.tx_buf = &config->sin_tonep1[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 9;
- xfer.tx_buf = &config->sin_tonep2[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
- xfer.len = 9;
- xfer.tx_buf = &config->sin_tonep3[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 9;
- xfer.tx_buf = &config->sin_tonep4[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 9;
- xfer.tx_buf = &config->sin_tonep5[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 9;
- xfer.tx_buf = &config->sin_tonep6[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 9;
- xfer.tx_buf = &config->sin_tonep7[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-error_ret:
- mutex_unlock(&st->lock);
-
- return ret ? ret : len;
-}
-
-static IIO_DEVICE_ATTR(dds, S_IWUSR, NULL, ad9910_set_parameter, 0);
-
-static void ad9910_init(struct ad9910_state *st)
-{
- struct spi_message msg;
- struct spi_transfer xfer;
- int ret;
- u8 cfr[5];
-
- cfr[0] = CFR1;
- cfr[1] = 0;
- cfr[2] = MANUAL_OSK | INVSIC | DDS_SINEOP;
- cfr[3] = AUTO_OSK | OSKEN | ACLR_PHA | ACLR_DIG | LOAD_LRR;
- cfr[4] = 0;
-
- mutex_lock(&st->lock);
-
- xfer.len = 5;
- xfer.tx_buf = 𝔠
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- cfr[0] = CFR2;
- cfr[1] = ENA_AMP;
- cfr[2] = READ_FTW | DIGR_ENA | ITER_IOUPD;
- cfr[3] = TX_ENA | PDCLK_INV | PDCLK_ENB;
- cfr[4] = PARA_ENA;
-
- xfer.len = 5;
- xfer.tx_buf = 𝔠
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- cfr[0] = CFR3;
- cfr[1] = PLL_ENA;
- cfr[2] = 0;
- cfr[3] = REFCLK_RST | REFCLK_BYP;
- cfr[4] = 0;
-
- xfer.len = 5;
- xfer.tx_buf = 𝔠
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
-error_ret:
- mutex_unlock(&st->lock);
-
-
-
-}
-
-static struct attribute *ad9910_attributes[] = {
- &iio_dev_attr_dds.dev_attr.attr,
- NULL,
-};
-
-static const struct attribute_group ad9910_attribute_group = {
- .attrs = ad9910_attributes,
-};
-
-static const struct iio_info ad9910_info = {
- .attrs = &ad9910_attribute_group,
- .driver_module = THIS_MODULE,
-};
-
-static int __devinit ad9910_probe(struct spi_device *spi)
-{
- struct ad9910_state *st;
- struct iio_dev *idev;
- int ret = 0;
-
- idev = iio_device_alloc(sizeof(*st));
- if (idev == NULL) {
- ret = -ENOMEM;
- goto error_ret;
- }
- spi_set_drvdata(spi, idev);
- st = iio_priv(idev);
- mutex_init(&st->lock);
- st->sdev = spi;
-
- idev->dev.parent = &spi->dev;
- idev->info = &ad9910_info;
- idev->modes = INDIO_DIRECT_MODE;
-
- ret = iio_device_register(idev);
- if (ret)
- goto error_free_dev;
- spi->max_speed_hz = 2000000;
- spi->mode = SPI_MODE_3;
- spi->bits_per_word = 8;
- spi_setup(spi);
- ad9910_init(st);
- return 0;
-
-error_free_dev:
- iio_device_free(idev);
-error_ret:
- return ret;
-}
-
-static int __devexit ad9910_remove(struct spi_device *spi)
-{
- iio_device_unregister(spi_get_drvdata(spi));
- iio_device_free(spi_get_drvdata(spi));
-
- return 0;
-}
-
-static struct spi_driver ad9910_driver = {
- .driver = {
- .name = DRV_NAME,
- .owner = THIS_MODULE,
- },
- .probe = ad9910_probe,
- .remove = __devexit_p(ad9910_remove),
-};
-module_spi_driver(ad9910_driver);
-
-MODULE_AUTHOR("Cliff Cai");
-MODULE_DESCRIPTION("Analog Devices ad9910 driver");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("spi:" DRV_NAME);
+++ /dev/null
-/*
- * Driver for ADI Direct Digital Synthesis ad9951
- *
- * Copyright (c) 2010 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/types.h>
-#include <linux/mutex.h>
-#include <linux/device.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>
-
-#define DRV_NAME "ad9951"
-
-#define CFR1 0x0
-#define CFR2 0x1
-
-#define AUTO_OSK (1)
-#define OSKEN (1 << 1)
-#define LOAD_ARR (1 << 2)
-
-#define AUTO_SYNC (1 << 7)
-
-#define LSB_FST (1)
-#define SDIO_IPT (1 << 1)
-#define CLR_PHA (1 << 2)
-#define SINE_OPT (1 << 4)
-#define ACLR_PHA (1 << 5)
-
-#define VCO_RANGE (1 << 2)
-
-#define CRS_OPT (1 << 1)
-#define HMANU_SYNC (1 << 2)
-#define HSPD_SYNC (1 << 3)
-
-/* Register format: 1 byte addr + value */
-struct ad9951_config {
- u8 asf[3];
- u8 arr[2];
- u8 ftw0[5];
- u8 ftw1[3];
-};
-
-struct ad9951_state {
- struct mutex lock;
- struct spi_device *sdev;
-};
-
-static ssize_t ad9951_set_parameter(struct device *dev,
- struct device_attribute *attr,
- const char *buf,
- size_t len)
-{
- struct spi_message msg;
- struct spi_transfer xfer;
- int ret;
- struct ad9951_config *config = (struct ad9951_config *)buf;
- struct iio_dev *idev = dev_get_drvdata(dev);
- struct ad9951_state *st = iio_priv(idev);
-
- xfer.len = 3;
- xfer.tx_buf = &config->asf[0];
- mutex_lock(&st->lock);
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 2;
- xfer.tx_buf = &config->arr[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 5;
- xfer.tx_buf = &config->ftw0[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- xfer.len = 3;
- xfer.tx_buf = &config->ftw1[0];
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-error_ret:
- mutex_unlock(&st->lock);
-
- return ret ? ret : len;
-}
-
-static IIO_DEVICE_ATTR(dds, S_IWUSR, NULL, ad9951_set_parameter, 0);
-
-static void ad9951_init(struct ad9951_state *st)
-{
- struct spi_message msg;
- struct spi_transfer xfer;
- int ret;
- u8 cfr[5];
-
- cfr[0] = CFR1;
- cfr[1] = 0;
- cfr[2] = LSB_FST | CLR_PHA | SINE_OPT | ACLR_PHA;
- cfr[3] = AUTO_OSK | OSKEN | LOAD_ARR;
- cfr[4] = 0;
-
- mutex_lock(&st->lock);
-
- xfer.len = 5;
- xfer.tx_buf = 𝔠
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
- cfr[0] = CFR2;
- cfr[1] = VCO_RANGE;
- cfr[2] = HSPD_SYNC;
- cfr[3] = 0;
-
- xfer.len = 4;
- xfer.tx_buf = 𝔠
-
- spi_message_init(&msg);
- spi_message_add_tail(&xfer, &msg);
- ret = spi_sync(st->sdev, &msg);
- if (ret)
- goto error_ret;
-
-error_ret:
- mutex_unlock(&st->lock);
-
-
-
-}
-
-static struct attribute *ad9951_attributes[] = {
- &iio_dev_attr_dds.dev_attr.attr,
- NULL,
-};
-
-static const struct attribute_group ad9951_attribute_group = {
- .attrs = ad9951_attributes,
-};
-
-static const struct iio_info ad9951_info = {
- .attrs = &ad9951_attribute_group,
- .driver_module = THIS_MODULE,
-};
-
-static int __devinit ad9951_probe(struct spi_device *spi)
-{
- struct ad9951_state *st;
- struct iio_dev *idev;
- int ret = 0;
-
- idev = iio_device_alloc(sizeof(*st));
- if (idev == NULL) {
- ret = -ENOMEM;
- goto error_ret;
- }
- spi_set_drvdata(spi, idev);
- st = iio_priv(idev);
- mutex_init(&st->lock);
- st->sdev = spi;
-
- idev->dev.parent = &spi->dev;
-
- idev->info = &ad9951_info;
- idev->modes = INDIO_DIRECT_MODE;
-
- ret = iio_device_register(idev);
- if (ret)
- goto error_free_dev;
- spi->max_speed_hz = 2000000;
- spi->mode = SPI_MODE_3;
- spi->bits_per_word = 8;
- spi_setup(spi);
- ad9951_init(st);
- return 0;
-
-error_free_dev:
- iio_device_free(idev);
-
-error_ret:
- return ret;
-}
-
-static int __devexit ad9951_remove(struct spi_device *spi)
-{
- iio_device_unregister(spi_get_drvdata(spi));
- iio_device_free(spi_get_drvdata(spi));
-
- return 0;
-}
-
-static struct spi_driver ad9951_driver = {
- .driver = {
- .name = DRV_NAME,
- .owner = THIS_MODULE,
- },
- .probe = ad9951_probe,
- .remove = __devexit_p(ad9951_remove),
-};
-module_spi_driver(ad9951_driver);
-
-MODULE_AUTHOR("Cliff Cai");
-MODULE_DESCRIPTION("Analog Devices ad9951 driver");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("spi:" DRV_NAME);
+++ /dev/null
-/*
- * dds.h - sysfs attributes associated with DDS devices
- *
- * Copyright (c) 2010 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later.
- */
-
-/**
- * /sys/bus/iio/devices/.../ddsX_freqY
- */
-
-#define IIO_DEV_ATTR_FREQ(_channel, _num, _mode, _show, _store, _addr) \
- IIO_DEVICE_ATTR(dds##_channel##_freq##_num, \
- _mode, _show, _store, _addr)
-
-/**
- * /sys/bus/iio/devices/.../ddsX_freqY_scale
- */
-
-#define IIO_CONST_ATTR_FREQ_SCALE(_channel, _string) \
- IIO_CONST_ATTR(dds##_channel##_freq_scale, _string)
-
-/**
- * /sys/bus/iio/devices/.../ddsX_freqsymbol
- */
-
-#define IIO_DEV_ATTR_FREQSYMBOL(_channel, _mode, _show, _store, _addr) \
- IIO_DEVICE_ATTR(dds##_channel##_freqsymbol, \
- _mode, _show, _store, _addr);
-
-/**
- * /sys/bus/iio/devices/.../ddsX_phaseY
- */
-
-#define IIO_DEV_ATTR_PHASE(_channel, _num, _mode, _show, _store, _addr) \
- IIO_DEVICE_ATTR(dds##_channel##_phase##_num, \
- _mode, _show, _store, _addr)
-
-/**
- * /sys/bus/iio/devices/.../ddsX_phaseY_scale
- */
-
-#define IIO_CONST_ATTR_PHASE_SCALE(_channel, _string) \
- IIO_CONST_ATTR(dds##_channel##_phase_scale, _string)
-
-/**
- * /sys/bus/iio/devices/.../ddsX_phasesymbol
- */
-
-#define IIO_DEV_ATTR_PHASESYMBOL(_channel, _mode, _show, _store, _addr) \
- IIO_DEVICE_ATTR(dds##_channel##_phasesymbol, \
- _mode, _show, _store, _addr);
-
-/**
- * /sys/bus/iio/devices/.../ddsX_pincontrol_en
- */
-
-#define IIO_DEV_ATTR_PINCONTROL_EN(_channel, _mode, _show, _store, _addr)\
- IIO_DEVICE_ATTR(dds##_channel##_pincontrol_en, \
- _mode, _show, _store, _addr);
-
-/**
- * /sys/bus/iio/devices/.../ddsX_pincontrol_freq_en
- */
-
-#define IIO_DEV_ATTR_PINCONTROL_FREQ_EN(_channel, _mode, _show, _store, _addr)\
- IIO_DEVICE_ATTR(dds##_channel##_pincontrol_freq_en, \
- _mode, _show, _store, _addr);
-
-/**
- * /sys/bus/iio/devices/.../ddsX_pincontrol_phase_en
- */
-
-#define IIO_DEV_ATTR_PINCONTROL_PHASE_EN(_channel, _mode, _show, _store, _addr)\
- IIO_DEVICE_ATTR(dds##_channel##_pincontrol_phase_en, \
- _mode, _show, _store, _addr);
-
-/**
- * /sys/bus/iio/devices/.../ddsX_out_enable
- */
-
-#define IIO_DEV_ATTR_OUT_ENABLE(_channel, _mode, _show, _store, _addr) \
- IIO_DEVICE_ATTR(dds##_channel##_out_enable, \
- _mode, _show, _store, _addr);
-
-/**
- * /sys/bus/iio/devices/.../ddsX_outY_enable
- */
-
-#define IIO_DEV_ATTR_OUTY_ENABLE(_channel, _output, \
- _mode, _show, _store, _addr) \
- IIO_DEVICE_ATTR(dds##_channel##_out##_output##_enable, \
- _mode, _show, _store, _addr);
-
-/**
- * /sys/bus/iio/devices/.../ddsX_outY_wavetype
- */
-
-#define IIO_DEV_ATTR_OUT_WAVETYPE(_channel, _output, _store, _addr) \
- IIO_DEVICE_ATTR(dds##_channel##_out##_output##_wavetype, \
- S_IWUSR, NULL, _store, _addr);
-
-/**
- * /sys/bus/iio/devices/.../ddsX_outY_wavetype_available
- */
-
-#define IIO_CONST_ATTR_OUT_WAVETYPES_AVAILABLE(_channel, _output, _modes)\
- IIO_CONST_ATTR(dds##_channel##_out##_output##_wavetype_available,\
- _modes);
--- /dev/null
+#
+# Direct Digital Synthesis drivers
+#
+menu "Direct Digital Synthesis"
+
+config AD5930
+ tristate "Analog Devices ad5930/5932 driver"
+ depends on SPI
+ help
+ Say yes here to build support for Analog Devices DDS chip
+ ad5930/ad5932, provides direct access via sysfs.
+
+config AD9832
+ tristate "Analog Devices ad9832/5 driver"
+ depends on SPI
+ help
+ Say yes here to build support for Analog Devices DDS chip
+ AD9832 and AD9835, provides direct access via sysfs.
+
+ To compile this driver as a module, choose M here: the
+ module will be called ad9832.
+
+config AD9834
+ tristate "Analog Devices AD9833/4/7/8 driver"
+ depends on SPI
+ help
+ Say yes here to build support for Analog Devices DDS chip
+ AD9833, AD9834, AD9837 and AD9838, provides direct access via sysfs.
+
+ To compile this driver as a module, choose M here: the
+ module will be called ad9834.
+
+config AD9850
+ tristate "Analog Devices ad9850/1 driver"
+ depends on SPI
+ help
+ Say yes here to build support for Analog Devices DDS chip
+ ad9850/1, provides direct access via sysfs.
+
+config AD9852
+ tristate "Analog Devices ad9852/4 driver"
+ depends on SPI
+ help
+ Say yes here to build support for Analog Devices DDS chip
+ ad9852/4, provides direct access via sysfs.
+
+config AD9910
+ tristate "Analog Devices ad9910 driver"
+ depends on SPI
+ help
+ Say yes here to build support for Analog Devices DDS chip
+ ad9910, provides direct access via sysfs.
+
+config AD9951
+ tristate "Analog Devices ad9951 driver"
+ depends on SPI
+ help
+ Say yes here to build support for Analog Devices DDS chip
+ ad9951, provides direct access via sysfs.
+
+endmenu
--- /dev/null
+#
+# Makefile for Direct Digital Synthesis drivers
+#
+
+obj-$(CONFIG_AD5930) += ad5930.o
+obj-$(CONFIG_AD9832) += ad9832.o
+obj-$(CONFIG_AD9834) += ad9834.o
+obj-$(CONFIG_AD9850) += ad9850.o
+obj-$(CONFIG_AD9852) += ad9852.o
+obj-$(CONFIG_AD9910) += ad9910.o
+obj-$(CONFIG_AD9951) += ad9951.o
--- /dev/null
+/*
+ * Driver for ADI Direct Digital Synthesis ad5930
+ *
+ * Copyright (c) 2010-2010 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/types.h>
+#include <linux/mutex.h>
+#include <linux/device.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>
+
+#define DRV_NAME "ad5930"
+
+#define value_mask (u16)0xf000
+#define addr_shift 12
+
+/* Register format: 4 bits addr + 12 bits value */
+struct ad5903_config {
+ u16 control;
+ u16 incnum;
+ u16 frqdelt[2];
+ u16 incitvl;
+ u16 buritvl;
+ u16 strtfrq[2];
+};
+
+struct ad5930_state {
+ struct mutex lock;
+ struct spi_device *sdev;
+};
+
+static ssize_t ad5930_set_parameter(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct spi_message msg;
+ struct spi_transfer xfer;
+ int ret;
+ struct ad5903_config *config = (struct ad5903_config *)buf;
+ struct iio_dev *idev = dev_get_drvdata(dev);
+ struct ad5930_state *st = iio_priv(idev);
+
+ config->control = (config->control & ~value_mask);
+ config->incnum = (config->control & ~value_mask) | (1 << addr_shift);
+ config->frqdelt[0] = (config->control & ~value_mask) | (2 << addr_shift);
+ config->frqdelt[1] = (config->control & ~value_mask) | 3 << addr_shift;
+ config->incitvl = (config->control & ~value_mask) | 4 << addr_shift;
+ config->buritvl = (config->control & ~value_mask) | 8 << addr_shift;
+ config->strtfrq[0] = (config->control & ~value_mask) | 0xc << addr_shift;
+ config->strtfrq[1] = (config->control & ~value_mask) | 0xd << addr_shift;
+
+ xfer.len = len;
+ xfer.tx_buf = config;
+ mutex_lock(&st->lock);
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+error_ret:
+ mutex_unlock(&st->lock);
+
+ return ret ? ret : len;
+}
+
+static IIO_DEVICE_ATTR(dds, S_IWUSR, NULL, ad5930_set_parameter, 0);
+
+static struct attribute *ad5930_attributes[] = {
+ &iio_dev_attr_dds.dev_attr.attr,
+ NULL,
+};
+
+static const struct attribute_group ad5930_attribute_group = {
+ .attrs = ad5930_attributes,
+};
+
+static const struct iio_info ad5930_info = {
+ .attrs = &ad5930_attribute_group,
+ .driver_module = THIS_MODULE,
+};
+
+static int __devinit ad5930_probe(struct spi_device *spi)
+{
+ struct ad5930_state *st;
+ struct iio_dev *idev;
+ int ret = 0;
+
+ idev = iio_device_alloc(sizeof(*st));
+ if (idev == NULL) {
+ ret = -ENOMEM;
+ goto error_ret;
+ }
+ spi_set_drvdata(spi, idev);
+ st = iio_priv(idev);
+
+ mutex_init(&st->lock);
+ st->sdev = spi;
+ idev->dev.parent = &spi->dev;
+ idev->info = &ad5930_info;
+ idev->modes = INDIO_DIRECT_MODE;
+
+ ret = iio_device_register(idev);
+ if (ret)
+ goto error_free_dev;
+ spi->max_speed_hz = 2000000;
+ spi->mode = SPI_MODE_3;
+ spi->bits_per_word = 16;
+ spi_setup(spi);
+
+ return 0;
+
+error_free_dev:
+ iio_device_free(idev);
+error_ret:
+ return ret;
+}
+
+static int __devexit ad5930_remove(struct spi_device *spi)
+{
+ iio_device_unregister(spi_get_drvdata(spi));
+ iio_device_free(spi_get_drvdata(spi));
+
+ return 0;
+}
+
+static struct spi_driver ad5930_driver = {
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+ },
+ .probe = ad5930_probe,
+ .remove = __devexit_p(ad5930_remove),
+};
+module_spi_driver(ad5930_driver);
+
+MODULE_AUTHOR("Cliff Cai");
+MODULE_DESCRIPTION("Analog Devices ad5930 driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("spi:" DRV_NAME);
--- /dev/null
+/*
+ * AD9832 SPI DDS 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/module.h>
+#include <asm/div64.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include "dds.h"
+
+#include "ad9832.h"
+
+static unsigned long ad9832_calc_freqreg(unsigned long mclk, unsigned long fout)
+{
+ unsigned long long freqreg = (u64) fout *
+ (u64) ((u64) 1L << AD9832_FREQ_BITS);
+ do_div(freqreg, mclk);
+ return freqreg;
+}
+
+static int ad9832_write_frequency(struct ad9832_state *st,
+ unsigned addr, unsigned long fout)
+{
+ unsigned long regval;
+
+ if (fout > (st->mclk / 2))
+ return -EINVAL;
+
+ regval = ad9832_calc_freqreg(st->mclk, fout);
+
+ st->freq_data[0] = cpu_to_be16((AD9832_CMD_FRE8BITSW << CMD_SHIFT) |
+ (addr << ADD_SHIFT) |
+ ((regval >> 24) & 0xFF));
+ st->freq_data[1] = cpu_to_be16((AD9832_CMD_FRE16BITSW << CMD_SHIFT) |
+ ((addr - 1) << ADD_SHIFT) |
+ ((regval >> 16) & 0xFF));
+ st->freq_data[2] = cpu_to_be16((AD9832_CMD_FRE8BITSW << CMD_SHIFT) |
+ ((addr - 2) << ADD_SHIFT) |
+ ((regval >> 8) & 0xFF));
+ st->freq_data[3] = cpu_to_be16((AD9832_CMD_FRE16BITSW << CMD_SHIFT) |
+ ((addr - 3) << ADD_SHIFT) |
+ ((regval >> 0) & 0xFF));
+
+ return spi_sync(st->spi, &st->freq_msg);
+}
+
+static int ad9832_write_phase(struct ad9832_state *st,
+ unsigned long addr, unsigned long phase)
+{
+ if (phase > (1 << AD9832_PHASE_BITS))
+ return -EINVAL;
+
+ st->phase_data[0] = cpu_to_be16((AD9832_CMD_PHA8BITSW << CMD_SHIFT) |
+ (addr << ADD_SHIFT) |
+ ((phase >> 8) & 0xFF));
+ st->phase_data[1] = cpu_to_be16((AD9832_CMD_PHA16BITSW << CMD_SHIFT) |
+ ((addr - 1) << ADD_SHIFT) |
+ (phase & 0xFF));
+
+ return spi_sync(st->spi, &st->phase_msg);
+}
+
+static ssize_t ad9832_write(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
+ struct ad9832_state *st = iio_priv(indio_dev);
+ struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
+ int ret;
+ long val;
+
+ ret = strict_strtoul(buf, 10, &val);
+ if (ret)
+ goto error_ret;
+
+ mutex_lock(&indio_dev->mlock);
+ switch ((u32) this_attr->address) {
+ case AD9832_FREQ0HM:
+ case AD9832_FREQ1HM:
+ ret = ad9832_write_frequency(st, this_attr->address, val);
+ break;
+ case AD9832_PHASE0H:
+ case AD9832_PHASE1H:
+ case AD9832_PHASE2H:
+ case AD9832_PHASE3H:
+ ret = ad9832_write_phase(st, this_attr->address, val);
+ break;
+ case AD9832_PINCTRL_EN:
+ if (val)
+ st->ctrl_ss &= ~AD9832_SELSRC;
+ else
+ st->ctrl_ss |= AD9832_SELSRC;
+ st->data = cpu_to_be16((AD9832_CMD_SYNCSELSRC << CMD_SHIFT) |
+ st->ctrl_ss);
+ ret = spi_sync(st->spi, &st->msg);
+ break;
+ case AD9832_FREQ_SYM:
+ if (val == 1)
+ st->ctrl_fp |= AD9832_FREQ;
+ else if (val == 0)
+ st->ctrl_fp &= ~AD9832_FREQ;
+ else {
+ ret = -EINVAL;
+ break;
+ }
+ st->data = cpu_to_be16((AD9832_CMD_FPSELECT << CMD_SHIFT) |
+ st->ctrl_fp);
+ ret = spi_sync(st->spi, &st->msg);
+ break;
+ case AD9832_PHASE_SYM:
+ if (val < 0 || val > 3) {
+ ret = -EINVAL;
+ break;
+ }
+
+ st->ctrl_fp &= ~AD9832_PHASE(3);
+ st->ctrl_fp |= AD9832_PHASE(val);
+
+ st->data = cpu_to_be16((AD9832_CMD_FPSELECT << CMD_SHIFT) |
+ st->ctrl_fp);
+ ret = spi_sync(st->spi, &st->msg);
+ break;
+ case AD9832_OUTPUT_EN:
+ if (val)
+ st->ctrl_src &= ~(AD9832_RESET | AD9832_SLEEP |
+ AD9832_CLR);
+ else
+ st->ctrl_src |= AD9832_RESET;
+
+ st->data = cpu_to_be16((AD9832_CMD_SLEEPRESCLR << CMD_SHIFT) |
+ st->ctrl_src);
+ ret = spi_sync(st->spi, &st->msg);
+ break;
+ default:
+ ret = -ENODEV;
+ }
+ mutex_unlock(&indio_dev->mlock);
+
+error_ret:
+ return ret ? ret : len;
+}
+
+/**
+ * see dds.h for further information
+ */
+
+static IIO_DEV_ATTR_FREQ(0, 0, S_IWUSR, NULL, ad9832_write, AD9832_FREQ0HM);
+static IIO_DEV_ATTR_FREQ(0, 1, S_IWUSR, NULL, ad9832_write, AD9832_FREQ1HM);
+static IIO_DEV_ATTR_FREQSYMBOL(0, S_IWUSR, NULL, ad9832_write, AD9832_FREQ_SYM);
+static IIO_CONST_ATTR_FREQ_SCALE(0, "1"); /* 1Hz */
+
+static IIO_DEV_ATTR_PHASE(0, 0, S_IWUSR, NULL, ad9832_write, AD9832_PHASE0H);
+static IIO_DEV_ATTR_PHASE(0, 1, S_IWUSR, NULL, ad9832_write, AD9832_PHASE1H);
+static IIO_DEV_ATTR_PHASE(0, 2, S_IWUSR, NULL, ad9832_write, AD9832_PHASE2H);
+static IIO_DEV_ATTR_PHASE(0, 3, S_IWUSR, NULL, ad9832_write, AD9832_PHASE3H);
+static IIO_DEV_ATTR_PHASESYMBOL(0, S_IWUSR, NULL,
+ ad9832_write, AD9832_PHASE_SYM);
+static IIO_CONST_ATTR_PHASE_SCALE(0, "0.0015339808"); /* 2PI/2^12 rad*/
+
+static IIO_DEV_ATTR_PINCONTROL_EN(0, S_IWUSR, NULL,
+ ad9832_write, AD9832_PINCTRL_EN);
+static IIO_DEV_ATTR_OUT_ENABLE(0, S_IWUSR, NULL,
+ ad9832_write, AD9832_OUTPUT_EN);
+
+static struct attribute *ad9832_attributes[] = {
+ &iio_dev_attr_dds0_freq0.dev_attr.attr,
+ &iio_dev_attr_dds0_freq1.dev_attr.attr,
+ &iio_const_attr_dds0_freq_scale.dev_attr.attr,
+ &iio_dev_attr_dds0_phase0.dev_attr.attr,
+ &iio_dev_attr_dds0_phase1.dev_attr.attr,
+ &iio_dev_attr_dds0_phase2.dev_attr.attr,
+ &iio_dev_attr_dds0_phase3.dev_attr.attr,
+ &iio_const_attr_dds0_phase_scale.dev_attr.attr,
+ &iio_dev_attr_dds0_pincontrol_en.dev_attr.attr,
+ &iio_dev_attr_dds0_freqsymbol.dev_attr.attr,
+ &iio_dev_attr_dds0_phasesymbol.dev_attr.attr,
+ &iio_dev_attr_dds0_out_enable.dev_attr.attr,
+ NULL,
+};
+
+static const struct attribute_group ad9832_attribute_group = {
+ .attrs = ad9832_attributes,
+};
+
+static const struct iio_info ad9832_info = {
+ .attrs = &ad9832_attribute_group,
+ .driver_module = THIS_MODULE,
+};
+
+static int __devinit ad9832_probe(struct spi_device *spi)
+{
+ struct ad9832_platform_data *pdata = spi->dev.platform_data;
+ struct iio_dev *indio_dev;
+ struct ad9832_state *st;
+ struct regulator *reg;
+ int ret;
+
+ if (!pdata) {
+ dev_dbg(&spi->dev, "no platform data?\n");
+ return -ENODEV;
+ }
+
+ reg = regulator_get(&spi->dev, "vcc");
+ if (!IS_ERR(reg)) {
+ ret = regulator_enable(reg);
+ if (ret)
+ goto error_put_reg;
+ }
+
+ indio_dev = iio_device_alloc(sizeof(*st));
+ if (indio_dev == NULL) {
+ ret = -ENOMEM;
+ goto error_disable_reg;
+ }
+ spi_set_drvdata(spi, indio_dev);
+ st = iio_priv(indio_dev);
+ st->reg = reg;
+ st->mclk = pdata->mclk;
+ st->spi = spi;
+
+ indio_dev->dev.parent = &spi->dev;
+ indio_dev->name = spi_get_device_id(spi)->name;
+ indio_dev->info = &ad9832_info;
+ indio_dev->modes = INDIO_DIRECT_MODE;
+
+ /* Setup default messages */
+
+ st->xfer.tx_buf = &st->data;
+ st->xfer.len = 2;
+
+ spi_message_init(&st->msg);
+ spi_message_add_tail(&st->xfer, &st->msg);
+
+ st->freq_xfer[0].tx_buf = &st->freq_data[0];
+ st->freq_xfer[0].len = 2;
+ st->freq_xfer[0].cs_change = 1;
+ st->freq_xfer[1].tx_buf = &st->freq_data[1];
+ st->freq_xfer[1].len = 2;
+ st->freq_xfer[1].cs_change = 1;
+ st->freq_xfer[2].tx_buf = &st->freq_data[2];
+ st->freq_xfer[2].len = 2;
+ st->freq_xfer[2].cs_change = 1;
+ st->freq_xfer[3].tx_buf = &st->freq_data[3];
+ st->freq_xfer[3].len = 2;
+
+ spi_message_init(&st->freq_msg);
+ spi_message_add_tail(&st->freq_xfer[0], &st->freq_msg);
+ spi_message_add_tail(&st->freq_xfer[1], &st->freq_msg);
+ spi_message_add_tail(&st->freq_xfer[2], &st->freq_msg);
+ spi_message_add_tail(&st->freq_xfer[3], &st->freq_msg);
+
+ st->phase_xfer[0].tx_buf = &st->phase_data[0];
+ st->phase_xfer[0].len = 2;
+ st->phase_xfer[0].cs_change = 1;
+ st->phase_xfer[1].tx_buf = &st->phase_data[1];
+ st->phase_xfer[1].len = 2;
+
+ spi_message_init(&st->phase_msg);
+ spi_message_add_tail(&st->phase_xfer[0], &st->phase_msg);
+ spi_message_add_tail(&st->phase_xfer[1], &st->phase_msg);
+
+ st->ctrl_src = AD9832_SLEEP | AD9832_RESET | AD9832_CLR;
+ st->data = cpu_to_be16((AD9832_CMD_SLEEPRESCLR << CMD_SHIFT) |
+ st->ctrl_src);
+ ret = spi_sync(st->spi, &st->msg);
+ if (ret) {
+ dev_err(&spi->dev, "device init failed\n");
+ goto error_free_device;
+ }
+
+ ret = ad9832_write_frequency(st, AD9832_FREQ0HM, pdata->freq0);
+ if (ret)
+ goto error_free_device;
+
+ ret = ad9832_write_frequency(st, AD9832_FREQ1HM, pdata->freq1);
+ if (ret)
+ goto error_free_device;
+
+ ret = ad9832_write_phase(st, AD9832_PHASE0H, pdata->phase0);
+ if (ret)
+ goto error_free_device;
+
+ ret = ad9832_write_phase(st, AD9832_PHASE1H, pdata->phase1);
+ if (ret)
+ goto error_free_device;
+
+ ret = ad9832_write_phase(st, AD9832_PHASE2H, pdata->phase2);
+ if (ret)
+ goto error_free_device;
+
+ ret = ad9832_write_phase(st, AD9832_PHASE3H, pdata->phase3);
+ if (ret)
+ goto error_free_device;
+
+ ret = iio_device_register(indio_dev);
+ if (ret)
+ goto error_free_device;
+
+ return 0;
+
+error_free_device:
+ iio_device_free(indio_dev);
+error_disable_reg:
+ if (!IS_ERR(reg))
+ regulator_disable(reg);
+error_put_reg:
+ if (!IS_ERR(reg))
+ regulator_put(reg);
+
+ return ret;
+}
+
+static int __devexit ad9832_remove(struct spi_device *spi)
+{
+ struct iio_dev *indio_dev = spi_get_drvdata(spi);
+ struct ad9832_state *st = iio_priv(indio_dev);
+
+ iio_device_unregister(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 ad9832_id[] = {
+ {"ad9832", 0},
+ {"ad9835", 0},
+ {}
+};
+MODULE_DEVICE_TABLE(spi, ad9832_id);
+
+static struct spi_driver ad9832_driver = {
+ .driver = {
+ .name = "ad9832",
+ .owner = THIS_MODULE,
+ },
+ .probe = ad9832_probe,
+ .remove = __devexit_p(ad9832_remove),
+ .id_table = ad9832_id,
+};
+module_spi_driver(ad9832_driver);
+
+MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
+MODULE_DESCRIPTION("Analog Devices AD9832/AD9835 DDS");
+MODULE_LICENSE("GPL v2");
--- /dev/null
+/*
+ * AD9832 SPI DDS driver
+ *
+ * Copyright 2011 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+#ifndef IIO_DDS_AD9832_H_
+#define IIO_DDS_AD9832_H_
+
+/* Registers */
+
+#define AD9832_FREQ0LL 0x0
+#define AD9832_FREQ0HL 0x1
+#define AD9832_FREQ0LM 0x2
+#define AD9832_FREQ0HM 0x3
+#define AD9832_FREQ1LL 0x4
+#define AD9832_FREQ1HL 0x5
+#define AD9832_FREQ1LM 0x6
+#define AD9832_FREQ1HM 0x7
+#define AD9832_PHASE0L 0x8
+#define AD9832_PHASE0H 0x9
+#define AD9832_PHASE1L 0xA
+#define AD9832_PHASE1H 0xB
+#define AD9832_PHASE2L 0xC
+#define AD9832_PHASE2H 0xD
+#define AD9832_PHASE3L 0xE
+#define AD9832_PHASE3H 0xF
+
+#define AD9832_PHASE_SYM 0x10
+#define AD9832_FREQ_SYM 0x11
+#define AD9832_PINCTRL_EN 0x12
+#define AD9832_OUTPUT_EN 0x13
+
+/* Command Control Bits */
+
+#define AD9832_CMD_PHA8BITSW 0x1
+#define AD9832_CMD_PHA16BITSW 0x0
+#define AD9832_CMD_FRE8BITSW 0x3
+#define AD9832_CMD_FRE16BITSW 0x2
+#define AD9832_CMD_FPSELECT 0x6
+#define AD9832_CMD_SYNCSELSRC 0x8
+#define AD9832_CMD_SLEEPRESCLR 0xC
+
+#define AD9832_FREQ (1 << 11)
+#define AD9832_PHASE(x) (((x) & 3) << 9)
+#define AD9832_SYNC (1 << 13)
+#define AD9832_SELSRC (1 << 12)
+#define AD9832_SLEEP (1 << 13)
+#define AD9832_RESET (1 << 12)
+#define AD9832_CLR (1 << 11)
+#define CMD_SHIFT 12
+#define ADD_SHIFT 8
+#define AD9832_FREQ_BITS 32
+#define AD9832_PHASE_BITS 12
+#define RES_MASK(bits) ((1 << (bits)) - 1)
+
+/**
+ * struct ad9832_state - driver instance specific data
+ * @spi: spi_device
+ * @reg: supply regulator
+ * @mclk: external master clock
+ * @ctrl_fp: cached frequency/phase control word
+ * @ctrl_ss: cached sync/selsrc control word
+ * @ctrl_src: cached sleep/reset/clr word
+ * @xfer: default spi transfer
+ * @msg: default spi message
+ * @freq_xfer: tuning word spi transfer
+ * @freq_msg: tuning word spi message
+ * @phase_xfer: tuning word spi transfer
+ * @phase_msg: tuning word spi message
+ * @data: spi transmit buffer
+ * @phase_data: tuning word spi transmit buffer
+ * @freq_data: tuning word spi transmit buffer
+ */
+
+struct ad9832_state {
+ struct spi_device *spi;
+ struct regulator *reg;
+ unsigned long mclk;
+ unsigned short ctrl_fp;
+ unsigned short ctrl_ss;
+ unsigned short ctrl_src;
+ struct spi_transfer xfer;
+ struct spi_message msg;
+ struct spi_transfer freq_xfer[4];
+ struct spi_message freq_msg;
+ struct spi_transfer phase_xfer[2];
+ struct spi_message phase_msg;
+ /*
+ * DMA (thus cache coherency maintenance) requires the
+ * transfer buffers to live in their own cache lines.
+ */
+ union {
+ unsigned short freq_data[4]____cacheline_aligned;
+ unsigned short phase_data[2];
+ unsigned short data;
+ };
+};
+
+/*
+ * TODO: struct ad9832_platform_data needs to go into include/linux/iio
+ */
+
+/**
+ * struct ad9832_platform_data - platform specific information
+ * @mclk: master clock in Hz
+ * @freq0: power up freq0 tuning word in Hz
+ * @freq1: power up freq1 tuning word in Hz
+ * @phase0: power up phase0 value [0..4095] correlates with 0..2PI
+ * @phase1: power up phase1 value [0..4095] correlates with 0..2PI
+ * @phase2: power up phase2 value [0..4095] correlates with 0..2PI
+ * @phase3: power up phase3 value [0..4095] correlates with 0..2PI
+ */
+
+struct ad9832_platform_data {
+ unsigned long mclk;
+ unsigned long freq0;
+ unsigned long freq1;
+ unsigned short phase0;
+ unsigned short phase1;
+ unsigned short phase2;
+ unsigned short phase3;
+};
+
+#endif /* IIO_DDS_AD9832_H_ */
--- /dev/null
+/*
+ * AD9833/AD9834/AD9837/AD9838 SPI DDS driver
+ *
+ * Copyright 2010-2011 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/workqueue.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
+#include <linux/list.h>
+#include <linux/spi/spi.h>
+#include <linux/regulator/consumer.h>
+#include <linux/err.h>
+#include <linux/module.h>
+#include <asm/div64.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include "dds.h"
+
+#include "ad9834.h"
+
+static unsigned int ad9834_calc_freqreg(unsigned long mclk, unsigned long fout)
+{
+ unsigned long long freqreg = (u64) fout * (u64) (1 << AD9834_FREQ_BITS);
+ do_div(freqreg, mclk);
+ return freqreg;
+}
+
+static int ad9834_write_frequency(struct ad9834_state *st,
+ unsigned long addr, unsigned long fout)
+{
+ unsigned long regval;
+
+ if (fout > (st->mclk / 2))
+ return -EINVAL;
+
+ regval = ad9834_calc_freqreg(st->mclk, fout);
+
+ st->freq_data[0] = cpu_to_be16(addr | (regval &
+ RES_MASK(AD9834_FREQ_BITS / 2)));
+ st->freq_data[1] = cpu_to_be16(addr | ((regval >>
+ (AD9834_FREQ_BITS / 2)) &
+ RES_MASK(AD9834_FREQ_BITS / 2)));
+
+ return spi_sync(st->spi, &st->freq_msg);
+}
+
+static int ad9834_write_phase(struct ad9834_state *st,
+ unsigned long addr, unsigned long phase)
+{
+ if (phase > (1 << AD9834_PHASE_BITS))
+ return -EINVAL;
+ st->data = cpu_to_be16(addr | phase);
+
+ return spi_sync(st->spi, &st->msg);
+}
+
+static ssize_t ad9834_write(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
+ struct ad9834_state *st = iio_priv(indio_dev);
+ struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
+ int ret;
+ long val;
+
+ ret = strict_strtoul(buf, 10, &val);
+ if (ret)
+ goto error_ret;
+
+ mutex_lock(&indio_dev->mlock);
+ switch ((u32) this_attr->address) {
+ case AD9834_REG_FREQ0:
+ case AD9834_REG_FREQ1:
+ ret = ad9834_write_frequency(st, this_attr->address, val);
+ break;
+ case AD9834_REG_PHASE0:
+ case AD9834_REG_PHASE1:
+ ret = ad9834_write_phase(st, this_attr->address, val);
+ break;
+ case AD9834_OPBITEN:
+ if (st->control & AD9834_MODE) {
+ ret = -EINVAL; /* AD9843 reserved mode */
+ break;
+ }
+
+ if (val)
+ st->control |= AD9834_OPBITEN;
+ else
+ st->control &= ~AD9834_OPBITEN;
+
+ st->data = cpu_to_be16(AD9834_REG_CMD | st->control);
+ ret = spi_sync(st->spi, &st->msg);
+ break;
+ case AD9834_PIN_SW:
+ if (val)
+ st->control |= AD9834_PIN_SW;
+ else
+ st->control &= ~AD9834_PIN_SW;
+ st->data = cpu_to_be16(AD9834_REG_CMD | st->control);
+ ret = spi_sync(st->spi, &st->msg);
+ break;
+ case AD9834_FSEL:
+ case AD9834_PSEL:
+ if (val == 0)
+ st->control &= ~(this_attr->address | AD9834_PIN_SW);
+ else if (val == 1) {
+ st->control |= this_attr->address;
+ st->control &= ~AD9834_PIN_SW;
+ } else {
+ ret = -EINVAL;
+ break;
+ }
+ st->data = cpu_to_be16(AD9834_REG_CMD | st->control);
+ ret = spi_sync(st->spi, &st->msg);
+ break;
+ case AD9834_RESET:
+ if (val)
+ st->control &= ~AD9834_RESET;
+ else
+ st->control |= AD9834_RESET;
+
+ st->data = cpu_to_be16(AD9834_REG_CMD | st->control);
+ ret = spi_sync(st->spi, &st->msg);
+ break;
+ default:
+ ret = -ENODEV;
+ }
+ mutex_unlock(&indio_dev->mlock);
+
+error_ret:
+ return ret ? ret : len;
+}
+
+static ssize_t ad9834_store_wavetype(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
+ struct ad9834_state *st = iio_priv(indio_dev);
+ struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
+ int ret = 0;
+ bool is_ad9833_7 = (st->devid == ID_AD9833) || (st->devid == ID_AD9837);
+
+ mutex_lock(&indio_dev->mlock);
+
+ switch ((u32) this_attr->address) {
+ case 0:
+ if (sysfs_streq(buf, "sine")) {
+ st->control &= ~AD9834_MODE;
+ if (is_ad9833_7)
+ st->control &= ~AD9834_OPBITEN;
+ } else if (sysfs_streq(buf, "triangle")) {
+ if (is_ad9833_7) {
+ st->control &= ~AD9834_OPBITEN;
+ st->control |= AD9834_MODE;
+ } else if (st->control & AD9834_OPBITEN) {
+ ret = -EINVAL; /* AD9843 reserved mode */
+ } else {
+ st->control |= AD9834_MODE;
+ }
+ } else if (is_ad9833_7 && sysfs_streq(buf, "square")) {
+ st->control &= ~AD9834_MODE;
+ st->control |= AD9834_OPBITEN;
+ } else {
+ ret = -EINVAL;
+ }
+
+ break;
+ case 1:
+ if (sysfs_streq(buf, "square") &&
+ !(st->control & AD9834_MODE)) {
+ st->control &= ~AD9834_MODE;
+ st->control |= AD9834_OPBITEN;
+ } else {
+ ret = -EINVAL;
+ }
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ if (!ret) {
+ st->data = cpu_to_be16(AD9834_REG_CMD | st->control);
+ ret = spi_sync(st->spi, &st->msg);
+ }
+ mutex_unlock(&indio_dev->mlock);
+
+ return ret ? ret : len;
+}
+
+static ssize_t ad9834_show_out0_wavetype_available(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
+ struct ad9834_state *st = iio_priv(indio_dev);
+ char *str;
+
+ if ((st->devid == ID_AD9833) || (st->devid == ID_AD9837))
+ str = "sine triangle square";
+ else if (st->control & AD9834_OPBITEN)
+ str = "sine";
+ else
+ str = "sine triangle";
+
+ return sprintf(buf, "%s\n", str);
+}
+
+
+static IIO_DEVICE_ATTR(dds0_out0_wavetype_available, S_IRUGO,
+ ad9834_show_out0_wavetype_available, NULL, 0);
+
+static ssize_t ad9834_show_out1_wavetype_available(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
+ struct ad9834_state *st = iio_priv(indio_dev);
+ char *str;
+
+ if (st->control & AD9834_MODE)
+ str = "";
+ else
+ str = "square";
+
+ return sprintf(buf, "%s\n", str);
+}
+
+static IIO_DEVICE_ATTR(dds0_out1_wavetype_available, S_IRUGO,
+ ad9834_show_out1_wavetype_available, NULL, 0);
+
+/**
+ * see dds.h for further information
+ */
+
+static IIO_DEV_ATTR_FREQ(0, 0, S_IWUSR, NULL, ad9834_write, AD9834_REG_FREQ0);
+static IIO_DEV_ATTR_FREQ(0, 1, S_IWUSR, NULL, ad9834_write, AD9834_REG_FREQ1);
+static IIO_DEV_ATTR_FREQSYMBOL(0, S_IWUSR, NULL, ad9834_write, AD9834_FSEL);
+static IIO_CONST_ATTR_FREQ_SCALE(0, "1"); /* 1Hz */
+
+static IIO_DEV_ATTR_PHASE(0, 0, S_IWUSR, NULL, ad9834_write, AD9834_REG_PHASE0);
+static IIO_DEV_ATTR_PHASE(0, 1, S_IWUSR, NULL, ad9834_write, AD9834_REG_PHASE1);
+static IIO_DEV_ATTR_PHASESYMBOL(0, S_IWUSR, NULL, ad9834_write, AD9834_PSEL);
+static IIO_CONST_ATTR_PHASE_SCALE(0, "0.0015339808"); /* 2PI/2^12 rad*/
+
+static IIO_DEV_ATTR_PINCONTROL_EN(0, S_IWUSR, NULL,
+ ad9834_write, AD9834_PIN_SW);
+static IIO_DEV_ATTR_OUT_ENABLE(0, S_IWUSR, NULL, ad9834_write, AD9834_RESET);
+static IIO_DEV_ATTR_OUTY_ENABLE(0, 1, S_IWUSR, NULL,
+ ad9834_write, AD9834_OPBITEN);
+static IIO_DEV_ATTR_OUT_WAVETYPE(0, 0, ad9834_store_wavetype, 0);
+static IIO_DEV_ATTR_OUT_WAVETYPE(0, 1, ad9834_store_wavetype, 1);
+
+static struct attribute *ad9834_attributes[] = {
+ &iio_dev_attr_dds0_freq0.dev_attr.attr,
+ &iio_dev_attr_dds0_freq1.dev_attr.attr,
+ &iio_const_attr_dds0_freq_scale.dev_attr.attr,
+ &iio_dev_attr_dds0_phase0.dev_attr.attr,
+ &iio_dev_attr_dds0_phase1.dev_attr.attr,
+ &iio_const_attr_dds0_phase_scale.dev_attr.attr,
+ &iio_dev_attr_dds0_pincontrol_en.dev_attr.attr,
+ &iio_dev_attr_dds0_freqsymbol.dev_attr.attr,
+ &iio_dev_attr_dds0_phasesymbol.dev_attr.attr,
+ &iio_dev_attr_dds0_out_enable.dev_attr.attr,
+ &iio_dev_attr_dds0_out1_enable.dev_attr.attr,
+ &iio_dev_attr_dds0_out0_wavetype.dev_attr.attr,
+ &iio_dev_attr_dds0_out1_wavetype.dev_attr.attr,
+ &iio_dev_attr_dds0_out0_wavetype_available.dev_attr.attr,
+ &iio_dev_attr_dds0_out1_wavetype_available.dev_attr.attr,
+ NULL,
+};
+
+static struct attribute *ad9833_attributes[] = {
+ &iio_dev_attr_dds0_freq0.dev_attr.attr,
+ &iio_dev_attr_dds0_freq1.dev_attr.attr,
+ &iio_const_attr_dds0_freq_scale.dev_attr.attr,
+ &iio_dev_attr_dds0_phase0.dev_attr.attr,
+ &iio_dev_attr_dds0_phase1.dev_attr.attr,
+ &iio_const_attr_dds0_phase_scale.dev_attr.attr,
+ &iio_dev_attr_dds0_freqsymbol.dev_attr.attr,
+ &iio_dev_attr_dds0_phasesymbol.dev_attr.attr,
+ &iio_dev_attr_dds0_out_enable.dev_attr.attr,
+ &iio_dev_attr_dds0_out0_wavetype.dev_attr.attr,
+ &iio_dev_attr_dds0_out0_wavetype_available.dev_attr.attr,
+ NULL,
+};
+
+static const struct attribute_group ad9834_attribute_group = {
+ .attrs = ad9834_attributes,
+};
+
+static const struct attribute_group ad9833_attribute_group = {
+ .attrs = ad9833_attributes,
+};
+
+static const struct iio_info ad9834_info = {
+ .attrs = &ad9834_attribute_group,
+ .driver_module = THIS_MODULE,
+};
+
+static const struct iio_info ad9833_info = {
+ .attrs = &ad9833_attribute_group,
+ .driver_module = THIS_MODULE,
+};
+
+static int __devinit ad9834_probe(struct spi_device *spi)
+{
+ struct ad9834_platform_data *pdata = spi->dev.platform_data;
+ struct ad9834_state *st;
+ struct iio_dev *indio_dev;
+ struct regulator *reg;
+ int ret;
+
+ if (!pdata) {
+ dev_dbg(&spi->dev, "no platform data?\n");
+ return -ENODEV;
+ }
+
+ reg = regulator_get(&spi->dev, "vcc");
+ if (!IS_ERR(reg)) {
+ ret = regulator_enable(reg);
+ if (ret)
+ goto error_put_reg;
+ }
+
+ indio_dev = iio_device_alloc(sizeof(*st));
+ if (indio_dev == NULL) {
+ ret = -ENOMEM;
+ goto error_disable_reg;
+ }
+ spi_set_drvdata(spi, indio_dev);
+ st = iio_priv(indio_dev);
+ st->mclk = pdata->mclk;
+ st->spi = spi;
+ st->devid = spi_get_device_id(spi)->driver_data;
+ st->reg = reg;
+ indio_dev->dev.parent = &spi->dev;
+ indio_dev->name = spi_get_device_id(spi)->name;
+ switch (st->devid) {
+ case ID_AD9833:
+ case ID_AD9837:
+ indio_dev->info = &ad9833_info;
+ break;
+ default:
+ indio_dev->info = &ad9834_info;
+ break;
+ }
+ indio_dev->modes = INDIO_DIRECT_MODE;
+
+ /* Setup default messages */
+
+ st->xfer.tx_buf = &st->data;
+ st->xfer.len = 2;
+
+ spi_message_init(&st->msg);
+ spi_message_add_tail(&st->xfer, &st->msg);
+
+ st->freq_xfer[0].tx_buf = &st->freq_data[0];
+ st->freq_xfer[0].len = 2;
+ st->freq_xfer[0].cs_change = 1;
+ st->freq_xfer[1].tx_buf = &st->freq_data[1];
+ st->freq_xfer[1].len = 2;
+
+ spi_message_init(&st->freq_msg);
+ spi_message_add_tail(&st->freq_xfer[0], &st->freq_msg);
+ spi_message_add_tail(&st->freq_xfer[1], &st->freq_msg);
+
+ st->control = AD9834_B28 | AD9834_RESET;
+
+ if (!pdata->en_div2)
+ st->control |= AD9834_DIV2;
+
+ if (!pdata->en_signbit_msb_out && (st->devid == ID_AD9834))
+ st->control |= AD9834_SIGN_PIB;
+
+ st->data = cpu_to_be16(AD9834_REG_CMD | st->control);
+ ret = spi_sync(st->spi, &st->msg);
+ if (ret) {
+ dev_err(&spi->dev, "device init failed\n");
+ goto error_free_device;
+ }
+
+ ret = ad9834_write_frequency(st, AD9834_REG_FREQ0, pdata->freq0);
+ if (ret)
+ goto error_free_device;
+
+ ret = ad9834_write_frequency(st, AD9834_REG_FREQ1, pdata->freq1);
+ if (ret)
+ goto error_free_device;
+
+ ret = ad9834_write_phase(st, AD9834_REG_PHASE0, pdata->phase0);
+ if (ret)
+ goto error_free_device;
+
+ ret = ad9834_write_phase(st, AD9834_REG_PHASE1, pdata->phase1);
+ if (ret)
+ goto error_free_device;
+
+ ret = iio_device_register(indio_dev);
+ if (ret)
+ goto error_free_device;
+
+ return 0;
+
+error_free_device:
+ iio_device_free(indio_dev);
+error_disable_reg:
+ if (!IS_ERR(reg))
+ regulator_disable(reg);
+error_put_reg:
+ if (!IS_ERR(reg))
+ regulator_put(reg);
+ return ret;
+}
+
+static int __devexit ad9834_remove(struct spi_device *spi)
+{
+ struct iio_dev *indio_dev = spi_get_drvdata(spi);
+ struct ad9834_state *st = iio_priv(indio_dev);
+
+ iio_device_unregister(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 ad9834_id[] = {
+ {"ad9833", ID_AD9833},
+ {"ad9834", ID_AD9834},
+ {"ad9837", ID_AD9837},
+ {"ad9838", ID_AD9838},
+ {}
+};
+MODULE_DEVICE_TABLE(spi, ad9834_id);
+
+static struct spi_driver ad9834_driver = {
+ .driver = {
+ .name = "ad9834",
+ .owner = THIS_MODULE,
+ },
+ .probe = ad9834_probe,
+ .remove = __devexit_p(ad9834_remove),
+ .id_table = ad9834_id,
+};
+module_spi_driver(ad9834_driver);
+
+MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
+MODULE_DESCRIPTION("Analog Devices AD9833/AD9834/AD9837/AD9838 DDS");
+MODULE_LICENSE("GPL v2");
--- /dev/null
+/*
+ * AD9833/AD9834/AD9837/AD9838 SPI DDS driver
+ *
+ * Copyright 2010-2011 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2.
+ */
+#ifndef IIO_DDS_AD9834_H_
+#define IIO_DDS_AD9834_H_
+
+/* Registers */
+
+#define AD9834_REG_CMD (0 << 14)
+#define AD9834_REG_FREQ0 (1 << 14)
+#define AD9834_REG_FREQ1 (2 << 14)
+#define AD9834_REG_PHASE0 (6 << 13)
+#define AD9834_REG_PHASE1 (7 << 13)
+
+/* Command Control Bits */
+
+#define AD9834_B28 (1 << 13)
+#define AD9834_HLB (1 << 12)
+#define AD9834_FSEL (1 << 11)
+#define AD9834_PSEL (1 << 10)
+#define AD9834_PIN_SW (1 << 9)
+#define AD9834_RESET (1 << 8)
+#define AD9834_SLEEP1 (1 << 7)
+#define AD9834_SLEEP12 (1 << 6)
+#define AD9834_OPBITEN (1 << 5)
+#define AD9834_SIGN_PIB (1 << 4)
+#define AD9834_DIV2 (1 << 3)
+#define AD9834_MODE (1 << 1)
+
+#define AD9834_FREQ_BITS 28
+#define AD9834_PHASE_BITS 12
+
+#define RES_MASK(bits) ((1 << (bits)) - 1)
+
+/**
+ * struct ad9834_state - driver instance specific data
+ * @spi: spi_device
+ * @reg: supply regulator
+ * @mclk: external master clock
+ * @control: cached control word
+ * @xfer: default spi transfer
+ * @msg: default spi message
+ * @freq_xfer: tuning word spi transfer
+ * @freq_msg: tuning word spi message
+ * @data: spi transmit buffer
+ * @freq_data: tuning word spi transmit buffer
+ */
+
+struct ad9834_state {
+ struct spi_device *spi;
+ struct regulator *reg;
+ unsigned int mclk;
+ unsigned short control;
+ unsigned short devid;
+ struct spi_transfer xfer;
+ struct spi_message msg;
+ struct spi_transfer freq_xfer[2];
+ struct spi_message freq_msg;
+
+ /*
+ * DMA (thus cache coherency maintenance) requires the
+ * transfer buffers to live in their own cache lines.
+ */
+ unsigned short data ____cacheline_aligned;
+ unsigned short freq_data[2] ;
+};
+
+
+/*
+ * TODO: struct ad7887_platform_data needs to go into include/linux/iio
+ */
+
+/**
+ * struct ad9834_platform_data - platform specific information
+ * @mclk: master clock in Hz
+ * @freq0: power up freq0 tuning word in Hz
+ * @freq1: power up freq1 tuning word in Hz
+ * @phase0: power up phase0 value [0..4095] correlates with 0..2PI
+ * @phase1: power up phase1 value [0..4095] correlates with 0..2PI
+ * @en_div2: digital output/2 is passed to the SIGN BIT OUT pin
+ * @en_signbit_msb_out: the MSB (or MSB/2) of the DAC data is connected to the
+ * SIGN BIT OUT pin. en_div2 controls whether it is the MSB
+ * or MSB/2 that is output. if en_signbit_msb_out=false,
+ * the on-board comparator is connected to SIGN BIT OUT
+ */
+
+struct ad9834_platform_data {
+ unsigned int mclk;
+ unsigned int freq0;
+ unsigned int freq1;
+ unsigned short phase0;
+ unsigned short phase1;
+ bool en_div2;
+ bool en_signbit_msb_out;
+};
+
+/**
+ * ad9834_supported_device_ids:
+ */
+
+enum ad9834_supported_device_ids {
+ ID_AD9833,
+ ID_AD9834,
+ ID_AD9837,
+ ID_AD9838,
+};
+
+#endif /* IIO_DDS_AD9834_H_ */
--- /dev/null
+/*
+ * Driver for ADI Direct Digital Synthesis ad9850
+ *
+ * Copyright (c) 2010-2010 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/types.h>
+#include <linux/mutex.h>
+#include <linux/device.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>
+
+#define DRV_NAME "ad9850"
+
+#define value_mask (u16)0xf000
+#define addr_shift 12
+
+/* Register format: 4 bits addr + 12 bits value */
+struct ad9850_config {
+ u8 control[5];
+};
+
+struct ad9850_state {
+ struct mutex lock;
+ struct spi_device *sdev;
+};
+
+static ssize_t ad9850_set_parameter(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct spi_message msg;
+ struct spi_transfer xfer;
+ int ret;
+ struct ad9850_config *config = (struct ad9850_config *)buf;
+ struct iio_dev *idev = dev_get_drvdata(dev);
+ struct ad9850_state *st = iio_priv(idev);
+
+ xfer.len = len;
+ xfer.tx_buf = config;
+ mutex_lock(&st->lock);
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+error_ret:
+ mutex_unlock(&st->lock);
+
+ return ret ? ret : len;
+}
+
+static IIO_DEVICE_ATTR(dds, S_IWUSR, NULL, ad9850_set_parameter, 0);
+
+static struct attribute *ad9850_attributes[] = {
+ &iio_dev_attr_dds.dev_attr.attr,
+ NULL,
+};
+
+static const struct attribute_group ad9850_attribute_group = {
+ .attrs = ad9850_attributes,
+};
+
+static const struct iio_info ad9850_info = {
+ .attrs = &ad9850_attribute_group,
+ .driver_module = THIS_MODULE,
+};
+
+static int __devinit ad9850_probe(struct spi_device *spi)
+{
+ struct ad9850_state *st;
+ struct iio_dev *idev;
+ int ret = 0;
+
+ idev = iio_device_alloc(sizeof(*st));
+ if (idev == NULL) {
+ ret = -ENOMEM;
+ goto error_ret;
+ }
+ spi_set_drvdata(spi, idev);
+ st = iio_priv(idev);
+ mutex_init(&st->lock);
+ st->sdev = spi;
+
+ idev->dev.parent = &spi->dev;
+ idev->info = &ad9850_info;
+ idev->modes = INDIO_DIRECT_MODE;
+
+ ret = iio_device_register(idev);
+ if (ret)
+ goto error_free_dev;
+ spi->max_speed_hz = 2000000;
+ spi->mode = SPI_MODE_3;
+ spi->bits_per_word = 16;
+ spi_setup(spi);
+
+ return 0;
+
+error_free_dev:
+ iio_device_free(idev);
+error_ret:
+ return ret;
+}
+
+static int __devexit ad9850_remove(struct spi_device *spi)
+{
+ iio_device_unregister(spi_get_drvdata(spi));
+ iio_device_free(spi_get_drvdata(spi));
+
+ return 0;
+}
+
+static struct spi_driver ad9850_driver = {
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+ },
+ .probe = ad9850_probe,
+ .remove = __devexit_p(ad9850_remove),
+};
+module_spi_driver(ad9850_driver);
+
+MODULE_AUTHOR("Cliff Cai");
+MODULE_DESCRIPTION("Analog Devices ad9850 driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("spi:" DRV_NAME);
--- /dev/null
+/*
+ * Driver for ADI Direct Digital Synthesis ad9852
+ *
+ * Copyright (c) 2010 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/types.h>
+#include <linux/mutex.h>
+#include <linux/device.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>
+
+#define DRV_NAME "ad9852"
+
+#define addr_phaad1 0x0
+#define addr_phaad2 0x1
+#define addr_fretu1 0x2
+#define addr_fretu2 0x3
+#define addr_delfre 0x4
+#define addr_updclk 0x5
+#define addr_ramclk 0x6
+#define addr_contrl 0x7
+#define addr_optskm 0x8
+#define addr_optskr 0xa
+#define addr_dacctl 0xb
+
+#define COMPPD (1 << 4)
+#define REFMULT2 (1 << 2)
+#define BYPPLL (1 << 5)
+#define PLLRANG (1 << 6)
+#define IEUPCLK (1)
+#define OSKEN (1 << 5)
+
+#define read_bit (1 << 7)
+
+/* Register format: 1 byte addr + value */
+struct ad9852_config {
+ u8 phajst0[3];
+ u8 phajst1[3];
+ u8 fretun1[6];
+ u8 fretun2[6];
+ u8 dltafre[6];
+ u8 updtclk[5];
+ u8 ramprat[4];
+ u8 control[5];
+ u8 outpskm[3];
+ u8 outpskr[2];
+ u8 daccntl[3];
+};
+
+struct ad9852_state {
+ struct mutex lock;
+ struct spi_device *sdev;
+};
+
+static ssize_t ad9852_set_parameter(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct spi_message msg;
+ struct spi_transfer xfer;
+ int ret;
+ struct ad9852_config *config = (struct ad9852_config *)buf;
+ struct iio_dev *idev = dev_get_drvdata(dev);
+ struct ad9852_state *st = iio_priv(idev);
+
+ xfer.len = 3;
+ xfer.tx_buf = &config->phajst0[0];
+ mutex_lock(&st->lock);
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 3;
+ xfer.tx_buf = &config->phajst1[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 6;
+ xfer.tx_buf = &config->fretun1[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 6;
+ xfer.tx_buf = &config->fretun2[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 6;
+ xfer.tx_buf = &config->dltafre[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 5;
+ xfer.tx_buf = &config->updtclk[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 4;
+ xfer.tx_buf = &config->ramprat[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 5;
+ xfer.tx_buf = &config->control[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 3;
+ xfer.tx_buf = &config->outpskm[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 2;
+ xfer.tx_buf = &config->outpskr[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 3;
+ xfer.tx_buf = &config->daccntl[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+error_ret:
+ mutex_unlock(&st->lock);
+
+ return ret ? ret : len;
+}
+
+static IIO_DEVICE_ATTR(dds, S_IWUSR, NULL, ad9852_set_parameter, 0);
+
+static void ad9852_init(struct ad9852_state *st)
+{
+ struct spi_message msg;
+ struct spi_transfer xfer;
+ int ret;
+ u8 config[5];
+
+ config[0] = addr_contrl;
+ config[1] = COMPPD;
+ config[2] = REFMULT2 | BYPPLL | PLLRANG;
+ config[3] = IEUPCLK;
+ config[4] = OSKEN;
+
+ mutex_lock(&st->lock);
+
+ xfer.len = 5;
+ xfer.tx_buf = &config;
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+error_ret:
+ mutex_unlock(&st->lock);
+
+
+
+}
+
+static struct attribute *ad9852_attributes[] = {
+ &iio_dev_attr_dds.dev_attr.attr,
+ NULL,
+};
+
+static const struct attribute_group ad9852_attribute_group = {
+ .attrs = ad9852_attributes,
+};
+
+static const struct iio_info ad9852_info = {
+ .attrs = &ad9852_attribute_group,
+ .driver_module = THIS_MODULE,
+};
+
+static int __devinit ad9852_probe(struct spi_device *spi)
+{
+ struct ad9852_state *st;
+ struct iio_dev *idev;
+ int ret = 0;
+
+ idev = iio_device_alloc(sizeof(*st));
+ if (idev == NULL) {
+ ret = -ENOMEM;
+ goto error_ret;
+ }
+ st = iio_priv(idev);
+ spi_set_drvdata(spi, idev);
+ mutex_init(&st->lock);
+ st->sdev = spi;
+
+ idev->dev.parent = &spi->dev;
+ idev->info = &ad9852_info;
+ idev->modes = INDIO_DIRECT_MODE;
+
+ ret = iio_device_register(idev);
+ if (ret)
+ goto error_free_dev;
+ spi->max_speed_hz = 2000000;
+ spi->mode = SPI_MODE_3;
+ spi->bits_per_word = 8;
+ spi_setup(spi);
+ ad9852_init(st);
+
+ return 0;
+
+error_free_dev:
+ iio_device_free(idev);
+
+error_ret:
+ return ret;
+}
+
+static int __devexit ad9852_remove(struct spi_device *spi)
+{
+ iio_device_unregister(spi_get_drvdata(spi));
+ iio_device_free(spi_get_drvdata(spi));
+
+ return 0;
+}
+
+static struct spi_driver ad9852_driver = {
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+ },
+ .probe = ad9852_probe,
+ .remove = __devexit_p(ad9852_remove),
+};
+module_spi_driver(ad9852_driver);
+
+MODULE_AUTHOR("Cliff Cai");
+MODULE_DESCRIPTION("Analog Devices ad9852 driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("spi:" DRV_NAME);
--- /dev/null
+/*
+ * Driver for ADI Direct Digital Synthesis ad9910
+ *
+ * Copyright (c) 2010 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/types.h>
+#include <linux/mutex.h>
+#include <linux/device.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>
+
+#define DRV_NAME "ad9910"
+
+#define CFR1 0x0
+#define CFR2 0x1
+#define CFR3 0x2
+
+#define AUXDAC 0x3
+#define IOUPD 0x4
+#define FTW 0x7
+#define POW 0x8
+#define ASF 0x9
+#define MULTC 0x0A
+#define DIG_RAMPL 0x0B
+#define DIG_RAMPS 0x0C
+#define DIG_RAMPR 0x0D
+#define SIN_TONEP0 0x0E
+#define SIN_TONEP1 0x0F
+#define SIN_TONEP2 0x10
+#define SIN_TONEP3 0x11
+#define SIN_TONEP4 0x12
+#define SIN_TONEP5 0x13
+#define SIN_TONEP6 0x14
+#define SIN_TONEP7 0x15
+
+#define RAM_ENABLE (1 << 7)
+
+#define MANUAL_OSK (1 << 7)
+#define INVSIC (1 << 6)
+#define DDS_SINEOP (1)
+
+#define AUTO_OSK (1)
+#define OSKEN (1 << 1)
+#define LOAD_ARR (1 << 2)
+#define CLR_PHA (1 << 3)
+#define CLR_DIG (1 << 4)
+#define ACLR_PHA (1 << 5)
+#define ACLR_DIG (1 << 6)
+#define LOAD_LRR (1 << 7)
+
+#define LSB_FST (1)
+#define SDIO_IPT (1 << 1)
+#define EXT_PWD (1 << 3)
+#define ADAC_PWD (1 << 4)
+#define REFCLK_PWD (1 << 5)
+#define DAC_PWD (1 << 6)
+#define DIG_PWD (1 << 7)
+
+#define ENA_AMP (1)
+#define READ_FTW (1)
+#define DIGR_LOW (1 << 1)
+#define DIGR_HIGH (1 << 2)
+#define DIGR_ENA (1 << 3)
+#define SYNCCLK_ENA (1 << 6)
+#define ITER_IOUPD (1 << 7)
+
+#define TX_ENA (1 << 1)
+#define PDCLK_INV (1 << 2)
+#define PDCLK_ENB (1 << 3)
+
+#define PARA_ENA (1 << 4)
+#define SYNC_DIS (1 << 5)
+#define DATA_ASS (1 << 6)
+#define MATCH_ENA (1 << 7)
+
+#define PLL_ENA (1)
+#define PFD_RST (1 << 2)
+#define REFCLK_RST (1 << 6)
+#define REFCLK_BYP (1 << 7)
+
+/* Register format: 1 byte addr + value */
+struct ad9910_config {
+ u8 auxdac[5];
+ u8 ioupd[5];
+ u8 ftw[5];
+ u8 pow[3];
+ u8 asf[5];
+ u8 multc[5];
+ u8 dig_rampl[9];
+ u8 dig_ramps[9];
+ u8 dig_rampr[5];
+ u8 sin_tonep0[9];
+ u8 sin_tonep1[9];
+ u8 sin_tonep2[9];
+ u8 sin_tonep3[9];
+ u8 sin_tonep4[9];
+ u8 sin_tonep5[9];
+ u8 sin_tonep6[9];
+ u8 sin_tonep7[9];
+};
+
+struct ad9910_state {
+ struct mutex lock;
+ struct spi_device *sdev;
+};
+
+static ssize_t ad9910_set_parameter(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct spi_message msg;
+ struct spi_transfer xfer;
+ int ret;
+ struct ad9910_config *config = (struct ad9910_config *)buf;
+ struct iio_dev *idev = dev_get_drvdata(dev);
+ struct ad9910_state *st = iio_priv(idev);
+
+ xfer.len = 5;
+ xfer.tx_buf = &config->auxdac[0];
+ mutex_lock(&st->lock);
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 5;
+ xfer.tx_buf = &config->ioupd[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 5;
+ xfer.tx_buf = &config->ftw[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 3;
+ xfer.tx_buf = &config->pow[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 5;
+ xfer.tx_buf = &config->asf[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 5;
+ xfer.tx_buf = &config->multc[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 9;
+ xfer.tx_buf = &config->dig_rampl[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 9;
+ xfer.tx_buf = &config->dig_ramps[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 5;
+ xfer.tx_buf = &config->dig_rampr[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 9;
+ xfer.tx_buf = &config->sin_tonep0[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 9;
+ xfer.tx_buf = &config->sin_tonep1[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 9;
+ xfer.tx_buf = &config->sin_tonep2[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+ xfer.len = 9;
+ xfer.tx_buf = &config->sin_tonep3[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 9;
+ xfer.tx_buf = &config->sin_tonep4[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 9;
+ xfer.tx_buf = &config->sin_tonep5[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 9;
+ xfer.tx_buf = &config->sin_tonep6[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 9;
+ xfer.tx_buf = &config->sin_tonep7[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+error_ret:
+ mutex_unlock(&st->lock);
+
+ return ret ? ret : len;
+}
+
+static IIO_DEVICE_ATTR(dds, S_IWUSR, NULL, ad9910_set_parameter, 0);
+
+static void ad9910_init(struct ad9910_state *st)
+{
+ struct spi_message msg;
+ struct spi_transfer xfer;
+ int ret;
+ u8 cfr[5];
+
+ cfr[0] = CFR1;
+ cfr[1] = 0;
+ cfr[2] = MANUAL_OSK | INVSIC | DDS_SINEOP;
+ cfr[3] = AUTO_OSK | OSKEN | ACLR_PHA | ACLR_DIG | LOAD_LRR;
+ cfr[4] = 0;
+
+ mutex_lock(&st->lock);
+
+ xfer.len = 5;
+ xfer.tx_buf = 𝔠
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ cfr[0] = CFR2;
+ cfr[1] = ENA_AMP;
+ cfr[2] = READ_FTW | DIGR_ENA | ITER_IOUPD;
+ cfr[3] = TX_ENA | PDCLK_INV | PDCLK_ENB;
+ cfr[4] = PARA_ENA;
+
+ xfer.len = 5;
+ xfer.tx_buf = 𝔠
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ cfr[0] = CFR3;
+ cfr[1] = PLL_ENA;
+ cfr[2] = 0;
+ cfr[3] = REFCLK_RST | REFCLK_BYP;
+ cfr[4] = 0;
+
+ xfer.len = 5;
+ xfer.tx_buf = 𝔠
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+error_ret:
+ mutex_unlock(&st->lock);
+
+
+
+}
+
+static struct attribute *ad9910_attributes[] = {
+ &iio_dev_attr_dds.dev_attr.attr,
+ NULL,
+};
+
+static const struct attribute_group ad9910_attribute_group = {
+ .attrs = ad9910_attributes,
+};
+
+static const struct iio_info ad9910_info = {
+ .attrs = &ad9910_attribute_group,
+ .driver_module = THIS_MODULE,
+};
+
+static int __devinit ad9910_probe(struct spi_device *spi)
+{
+ struct ad9910_state *st;
+ struct iio_dev *idev;
+ int ret = 0;
+
+ idev = iio_device_alloc(sizeof(*st));
+ if (idev == NULL) {
+ ret = -ENOMEM;
+ goto error_ret;
+ }
+ spi_set_drvdata(spi, idev);
+ st = iio_priv(idev);
+ mutex_init(&st->lock);
+ st->sdev = spi;
+
+ idev->dev.parent = &spi->dev;
+ idev->info = &ad9910_info;
+ idev->modes = INDIO_DIRECT_MODE;
+
+ ret = iio_device_register(idev);
+ if (ret)
+ goto error_free_dev;
+ spi->max_speed_hz = 2000000;
+ spi->mode = SPI_MODE_3;
+ spi->bits_per_word = 8;
+ spi_setup(spi);
+ ad9910_init(st);
+ return 0;
+
+error_free_dev:
+ iio_device_free(idev);
+error_ret:
+ return ret;
+}
+
+static int __devexit ad9910_remove(struct spi_device *spi)
+{
+ iio_device_unregister(spi_get_drvdata(spi));
+ iio_device_free(spi_get_drvdata(spi));
+
+ return 0;
+}
+
+static struct spi_driver ad9910_driver = {
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+ },
+ .probe = ad9910_probe,
+ .remove = __devexit_p(ad9910_remove),
+};
+module_spi_driver(ad9910_driver);
+
+MODULE_AUTHOR("Cliff Cai");
+MODULE_DESCRIPTION("Analog Devices ad9910 driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("spi:" DRV_NAME);
--- /dev/null
+/*
+ * Driver for ADI Direct Digital Synthesis ad9951
+ *
+ * Copyright (c) 2010 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/types.h>
+#include <linux/mutex.h>
+#include <linux/device.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>
+
+#define DRV_NAME "ad9951"
+
+#define CFR1 0x0
+#define CFR2 0x1
+
+#define AUTO_OSK (1)
+#define OSKEN (1 << 1)
+#define LOAD_ARR (1 << 2)
+
+#define AUTO_SYNC (1 << 7)
+
+#define LSB_FST (1)
+#define SDIO_IPT (1 << 1)
+#define CLR_PHA (1 << 2)
+#define SINE_OPT (1 << 4)
+#define ACLR_PHA (1 << 5)
+
+#define VCO_RANGE (1 << 2)
+
+#define CRS_OPT (1 << 1)
+#define HMANU_SYNC (1 << 2)
+#define HSPD_SYNC (1 << 3)
+
+/* Register format: 1 byte addr + value */
+struct ad9951_config {
+ u8 asf[3];
+ u8 arr[2];
+ u8 ftw0[5];
+ u8 ftw1[3];
+};
+
+struct ad9951_state {
+ struct mutex lock;
+ struct spi_device *sdev;
+};
+
+static ssize_t ad9951_set_parameter(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf,
+ size_t len)
+{
+ struct spi_message msg;
+ struct spi_transfer xfer;
+ int ret;
+ struct ad9951_config *config = (struct ad9951_config *)buf;
+ struct iio_dev *idev = dev_get_drvdata(dev);
+ struct ad9951_state *st = iio_priv(idev);
+
+ xfer.len = 3;
+ xfer.tx_buf = &config->asf[0];
+ mutex_lock(&st->lock);
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 2;
+ xfer.tx_buf = &config->arr[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 5;
+ xfer.tx_buf = &config->ftw0[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ xfer.len = 3;
+ xfer.tx_buf = &config->ftw1[0];
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+error_ret:
+ mutex_unlock(&st->lock);
+
+ return ret ? ret : len;
+}
+
+static IIO_DEVICE_ATTR(dds, S_IWUSR, NULL, ad9951_set_parameter, 0);
+
+static void ad9951_init(struct ad9951_state *st)
+{
+ struct spi_message msg;
+ struct spi_transfer xfer;
+ int ret;
+ u8 cfr[5];
+
+ cfr[0] = CFR1;
+ cfr[1] = 0;
+ cfr[2] = LSB_FST | CLR_PHA | SINE_OPT | ACLR_PHA;
+ cfr[3] = AUTO_OSK | OSKEN | LOAD_ARR;
+ cfr[4] = 0;
+
+ mutex_lock(&st->lock);
+
+ xfer.len = 5;
+ xfer.tx_buf = 𝔠
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+ cfr[0] = CFR2;
+ cfr[1] = VCO_RANGE;
+ cfr[2] = HSPD_SYNC;
+ cfr[3] = 0;
+
+ xfer.len = 4;
+ xfer.tx_buf = 𝔠
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+ ret = spi_sync(st->sdev, &msg);
+ if (ret)
+ goto error_ret;
+
+error_ret:
+ mutex_unlock(&st->lock);
+
+
+
+}
+
+static struct attribute *ad9951_attributes[] = {
+ &iio_dev_attr_dds.dev_attr.attr,
+ NULL,
+};
+
+static const struct attribute_group ad9951_attribute_group = {
+ .attrs = ad9951_attributes,
+};
+
+static const struct iio_info ad9951_info = {
+ .attrs = &ad9951_attribute_group,
+ .driver_module = THIS_MODULE,
+};
+
+static int __devinit ad9951_probe(struct spi_device *spi)
+{
+ struct ad9951_state *st;
+ struct iio_dev *idev;
+ int ret = 0;
+
+ idev = iio_device_alloc(sizeof(*st));
+ if (idev == NULL) {
+ ret = -ENOMEM;
+ goto error_ret;
+ }
+ spi_set_drvdata(spi, idev);
+ st = iio_priv(idev);
+ mutex_init(&st->lock);
+ st->sdev = spi;
+
+ idev->dev.parent = &spi->dev;
+
+ idev->info = &ad9951_info;
+ idev->modes = INDIO_DIRECT_MODE;
+
+ ret = iio_device_register(idev);
+ if (ret)
+ goto error_free_dev;
+ spi->max_speed_hz = 2000000;
+ spi->mode = SPI_MODE_3;
+ spi->bits_per_word = 8;
+ spi_setup(spi);
+ ad9951_init(st);
+ return 0;
+
+error_free_dev:
+ iio_device_free(idev);
+
+error_ret:
+ return ret;
+}
+
+static int __devexit ad9951_remove(struct spi_device *spi)
+{
+ iio_device_unregister(spi_get_drvdata(spi));
+ iio_device_free(spi_get_drvdata(spi));
+
+ return 0;
+}
+
+static struct spi_driver ad9951_driver = {
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+ },
+ .probe = ad9951_probe,
+ .remove = __devexit_p(ad9951_remove),
+};
+module_spi_driver(ad9951_driver);
+
+MODULE_AUTHOR("Cliff Cai");
+MODULE_DESCRIPTION("Analog Devices ad9951 driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("spi:" DRV_NAME);
--- /dev/null
+/*
+ * dds.h - sysfs attributes associated with DDS devices
+ *
+ * Copyright (c) 2010 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+/**
+ * /sys/bus/iio/devices/.../ddsX_freqY
+ */
+
+#define IIO_DEV_ATTR_FREQ(_channel, _num, _mode, _show, _store, _addr) \
+ IIO_DEVICE_ATTR(dds##_channel##_freq##_num, \
+ _mode, _show, _store, _addr)
+
+/**
+ * /sys/bus/iio/devices/.../ddsX_freqY_scale
+ */
+
+#define IIO_CONST_ATTR_FREQ_SCALE(_channel, _string) \
+ IIO_CONST_ATTR(dds##_channel##_freq_scale, _string)
+
+/**
+ * /sys/bus/iio/devices/.../ddsX_freqsymbol
+ */
+
+#define IIO_DEV_ATTR_FREQSYMBOL(_channel, _mode, _show, _store, _addr) \
+ IIO_DEVICE_ATTR(dds##_channel##_freqsymbol, \
+ _mode, _show, _store, _addr);
+
+/**
+ * /sys/bus/iio/devices/.../ddsX_phaseY
+ */
+
+#define IIO_DEV_ATTR_PHASE(_channel, _num, _mode, _show, _store, _addr) \
+ IIO_DEVICE_ATTR(dds##_channel##_phase##_num, \
+ _mode, _show, _store, _addr)
+
+/**
+ * /sys/bus/iio/devices/.../ddsX_phaseY_scale
+ */
+
+#define IIO_CONST_ATTR_PHASE_SCALE(_channel, _string) \
+ IIO_CONST_ATTR(dds##_channel##_phase_scale, _string)
+
+/**
+ * /sys/bus/iio/devices/.../ddsX_phasesymbol
+ */
+
+#define IIO_DEV_ATTR_PHASESYMBOL(_channel, _mode, _show, _store, _addr) \
+ IIO_DEVICE_ATTR(dds##_channel##_phasesymbol, \
+ _mode, _show, _store, _addr);
+
+/**
+ * /sys/bus/iio/devices/.../ddsX_pincontrol_en
+ */
+
+#define IIO_DEV_ATTR_PINCONTROL_EN(_channel, _mode, _show, _store, _addr)\
+ IIO_DEVICE_ATTR(dds##_channel##_pincontrol_en, \
+ _mode, _show, _store, _addr);
+
+/**
+ * /sys/bus/iio/devices/.../ddsX_pincontrol_freq_en
+ */
+
+#define IIO_DEV_ATTR_PINCONTROL_FREQ_EN(_channel, _mode, _show, _store, _addr)\
+ IIO_DEVICE_ATTR(dds##_channel##_pincontrol_freq_en, \
+ _mode, _show, _store, _addr);
+
+/**
+ * /sys/bus/iio/devices/.../ddsX_pincontrol_phase_en
+ */
+
+#define IIO_DEV_ATTR_PINCONTROL_PHASE_EN(_channel, _mode, _show, _store, _addr)\
+ IIO_DEVICE_ATTR(dds##_channel##_pincontrol_phase_en, \
+ _mode, _show, _store, _addr);
+
+/**
+ * /sys/bus/iio/devices/.../ddsX_out_enable
+ */
+
+#define IIO_DEV_ATTR_OUT_ENABLE(_channel, _mode, _show, _store, _addr) \
+ IIO_DEVICE_ATTR(dds##_channel##_out_enable, \
+ _mode, _show, _store, _addr);
+
+/**
+ * /sys/bus/iio/devices/.../ddsX_outY_enable
+ */
+
+#define IIO_DEV_ATTR_OUTY_ENABLE(_channel, _output, \
+ _mode, _show, _store, _addr) \
+ IIO_DEVICE_ATTR(dds##_channel##_out##_output##_enable, \
+ _mode, _show, _store, _addr);
+
+/**
+ * /sys/bus/iio/devices/.../ddsX_outY_wavetype
+ */
+
+#define IIO_DEV_ATTR_OUT_WAVETYPE(_channel, _output, _store, _addr) \
+ IIO_DEVICE_ATTR(dds##_channel##_out##_output##_wavetype, \
+ S_IWUSR, NULL, _store, _addr);
+
+/**
+ * /sys/bus/iio/devices/.../ddsX_outY_wavetype_available
+ */
+
+#define IIO_CONST_ATTR_OUT_WAVETYPES_AVAILABLE(_channel, _output, _modes)\
+ IIO_CONST_ATTR(dds##_channel##_out##_output##_wavetype_available,\
+ _modes);
projects / firefly-linux-kernel-4.4.55.git / commitdiff