return -EINVAL;
}
+static int bmc150_accel_update_slope(struct bmc150_accel_data *data)
+{
+ int ret, val;
+
+ ret = i2c_smbus_write_byte_data(data->client, BMC150_ACCEL_REG_INT_6,
+ data->slope_thres);
+ if (ret < 0) {
+ dev_err(&data->client->dev, "Error writing reg_int_6\n");
+ return ret;
+ }
+
+ ret = i2c_smbus_read_byte_data(data->client, BMC150_ACCEL_REG_INT_5);
+ if (ret < 0) {
+ dev_err(&data->client->dev, "Error reading reg_int_5\n");
+ return ret;
+ }
+
+ val = (ret & ~BMC150_ACCEL_SLOPE_DUR_MASK) | data->slope_dur;
+ ret = i2c_smbus_write_byte_data(data->client, BMC150_ACCEL_REG_INT_5,
+ val);
+ if (ret < 0) {
+ dev_err(&data->client->dev, "Error write reg_int_5\n");
+ return ret;
+ }
+
+ dev_dbg(&data->client->dev, "%s: %x %x\n", __func__, data->slope_thres,
+ data->slope_dur);
+
+ return ret;
+}
+
static int bmc150_accel_chip_init(struct bmc150_accel_data *data)
{
int ret;
data->range = BMC150_ACCEL_DEF_RANGE_4G;
- /* Set default slope duration */
- ret = i2c_smbus_read_byte_data(data->client, BMC150_ACCEL_REG_INT_5);
- if (ret < 0) {
- dev_err(&data->client->dev, "Error reading reg_int_5\n");
- return ret;
- }
- data->slope_dur |= BMC150_ACCEL_DEF_SLOPE_DURATION;
- ret = i2c_smbus_write_byte_data(data->client,
- BMC150_ACCEL_REG_INT_5,
- data->slope_dur);
- if (ret < 0) {
- dev_err(&data->client->dev, "Error writing reg_int_5\n");
- return ret;
- }
- dev_dbg(&data->client->dev, "slope_dur %x\n", data->slope_dur);
-
- /* Set default slope thresholds */
- ret = i2c_smbus_write_byte_data(data->client,
- BMC150_ACCEL_REG_INT_6,
- BMC150_ACCEL_DEF_SLOPE_THRESHOLD);
- if (ret < 0) {
- dev_err(&data->client->dev, "Error writing reg_int_6\n");
- return ret;
- }
+ /* Set default slope duration and thresholds */
data->slope_thres = BMC150_ACCEL_DEF_SLOPE_THRESHOLD;
- dev_dbg(&data->client->dev, "slope_thres %x\n", data->slope_thres);
+ data->slope_dur = BMC150_ACCEL_DEF_SLOPE_DURATION;
+ ret = bmc150_accel_update_slope(data);
+ if (ret < 0)
+ return ret;
/* Set default as latched interrupts */
ret = i2c_smbus_write_byte_data(data->client,
return 0;
}
-static int bmc150_accel_setup_any_motion_interrupt(
- struct bmc150_accel_data *data,
- bool status)
-{
- int ret;
-
- /* Enable/Disable INT1 mapping */
- ret = i2c_smbus_read_byte_data(data->client,
- BMC150_ACCEL_REG_INT_MAP_0);
- if (ret < 0) {
- dev_err(&data->client->dev, "Error reading reg_int_map_0\n");
- return ret;
- }
- if (status)
- ret |= BMC150_ACCEL_INT_MAP_0_BIT_SLOPE;
- else
- ret &= ~BMC150_ACCEL_INT_MAP_0_BIT_SLOPE;
-
- ret = i2c_smbus_write_byte_data(data->client,
- BMC150_ACCEL_REG_INT_MAP_0,
- ret);
- if (ret < 0) {
- dev_err(&data->client->dev, "Error writing reg_int_map_0\n");
- return ret;
- }
-
- if (status) {
- /* Set slope duration (no of samples) */
- ret = i2c_smbus_write_byte_data(data->client,
- BMC150_ACCEL_REG_INT_5,
- data->slope_dur);
- if (ret < 0) {
- dev_err(&data->client->dev, "Error write reg_int_5\n");
- return ret;
- }
-
- /* Set slope thresholds */
- ret = i2c_smbus_write_byte_data(data->client,
- BMC150_ACCEL_REG_INT_6,
- data->slope_thres);
- if (ret < 0) {
- dev_err(&data->client->dev, "Error write reg_int_6\n");
- return ret;
- }
-
- /*
- * New data interrupt is always non-latched,
- * which will have higher priority, so no need
- * to set latched mode, we will be flooded anyway with INTR
- */
- if (!data->dready_trigger_on) {
- ret = i2c_smbus_write_byte_data(data->client,
- BMC150_ACCEL_REG_INT_RST_LATCH,
- BMC150_ACCEL_INT_MODE_LATCH_INT |
- BMC150_ACCEL_INT_MODE_LATCH_RESET);
- if (ret < 0) {
- dev_err(&data->client->dev,
- "Error writing reg_int_rst_latch\n");
- return ret;
- }
- }
-
- ret = i2c_smbus_write_byte_data(data->client,
- BMC150_ACCEL_REG_INT_EN_0,
- BMC150_ACCEL_INT_EN_BIT_SLP_X |
- BMC150_ACCEL_INT_EN_BIT_SLP_Y |
- BMC150_ACCEL_INT_EN_BIT_SLP_Z);
- } else
- ret = i2c_smbus_write_byte_data(data->client,
- BMC150_ACCEL_REG_INT_EN_0,
- 0);
-
- if (ret < 0) {
- dev_err(&data->client->dev, "Error writing reg_int_en_0\n");
- return ret;
- }
-
- return 0;
-}
-
-static int bmc150_accel_setup_new_data_interrupt(struct bmc150_accel_data *data,
- bool status)
-{
- int ret;
-
- /* Enable/Disable INT1 mapping */
- ret = i2c_smbus_read_byte_data(data->client,
- BMC150_ACCEL_REG_INT_MAP_1);
- if (ret < 0) {
- dev_err(&data->client->dev, "Error reading reg_int_map_1\n");
- return ret;
- }
- if (status)
- ret |= BMC150_ACCEL_INT_MAP_1_BIT_DATA;
- else
- ret &= ~BMC150_ACCEL_INT_MAP_1_BIT_DATA;
-
- ret = i2c_smbus_write_byte_data(data->client,
- BMC150_ACCEL_REG_INT_MAP_1,
- ret);
- if (ret < 0) {
- dev_err(&data->client->dev, "Error writing reg_int_map_1\n");
- return ret;
- }
-
- if (status) {
- /*
- * Set non latched mode interrupt and clear any latched
- * interrupt
- */
- ret = i2c_smbus_write_byte_data(data->client,
- BMC150_ACCEL_REG_INT_RST_LATCH,
- BMC150_ACCEL_INT_MODE_NON_LATCH_INT |
- BMC150_ACCEL_INT_MODE_LATCH_RESET);
- if (ret < 0) {
- dev_err(&data->client->dev,
- "Error writing reg_int_rst_latch\n");
- return ret;
- }
-
- ret = i2c_smbus_write_byte_data(data->client,
- BMC150_ACCEL_REG_INT_EN_1,
- BMC150_ACCEL_INT_EN_BIT_DATA_EN);
-
- } else {
- /* Restore default interrupt mode */
- ret = i2c_smbus_write_byte_data(data->client,
- BMC150_ACCEL_REG_INT_RST_LATCH,
- BMC150_ACCEL_INT_MODE_LATCH_INT |
- BMC150_ACCEL_INT_MODE_LATCH_RESET);
- if (ret < 0) {
- dev_err(&data->client->dev,
- "Error writing reg_int_rst_latch\n");
- return ret;
- }
-
- ret = i2c_smbus_write_byte_data(data->client,
- BMC150_ACCEL_REG_INT_EN_1,
- 0);
- }
-
- if (ret < 0) {
- dev_err(&data->client->dev, "Error writing reg_int_en_1\n");
- return ret;
- }
-
- return 0;
-}
-
static int bmc150_accel_get_bw(struct bmc150_accel_data *data, int *val,
int *val2)
{
}
#endif
+static const struct bmc150_accel_interrupt_info {
+ u8 map_reg;
+ u8 map_bitmask;
+ u8 en_reg;
+ u8 en_bitmask;
+} bmc150_accel_interrupts[] = {
+ { /* data ready interrupt */
+ .map_reg = BMC150_ACCEL_REG_INT_MAP_1,
+ .map_bitmask = BMC150_ACCEL_INT_MAP_1_BIT_DATA,
+ .en_reg = BMC150_ACCEL_REG_INT_EN_1,
+ .en_bitmask = BMC150_ACCEL_INT_EN_BIT_DATA_EN,
+ },
+ { /* motion interrupt */
+ .map_reg = BMC150_ACCEL_REG_INT_MAP_0,
+ .map_bitmask = BMC150_ACCEL_INT_MAP_0_BIT_SLOPE,
+ .en_reg = BMC150_ACCEL_REG_INT_EN_0,
+ .en_bitmask = BMC150_ACCEL_INT_EN_BIT_SLP_X |
+ BMC150_ACCEL_INT_EN_BIT_SLP_Y |
+ BMC150_ACCEL_INT_EN_BIT_SLP_Z
+ },
+};
+
+static int bmc150_accel_set_interrupt(struct bmc150_accel_data *data,
+ const struct bmc150_accel_interrupt_info *info,
+ bool state)
+{
+ int ret;
+
+ /*
+ * We will expect the enable and disable to do operation in
+ * in reverse order. This will happen here anyway as our
+ * resume operation uses sync mode runtime pm calls, the
+ * suspend operation will be delayed by autosuspend delay
+ * So the disable operation will still happen in reverse of
+ * enable operation. When runtime pm is disabled the mode
+ * is always on so sequence doesn't matter
+ */
+ ret = bmc150_accel_set_power_state(data, state);
+ if (ret < 0)
+ return ret;
+
+ /* map the interrupt to the appropriate pins */
+ ret = i2c_smbus_read_byte_data(data->client, info->map_reg);
+ if (ret < 0) {
+ dev_err(&data->client->dev, "Error reading reg_int_map\n");
+ goto out_fix_power_state;
+ }
+ if (state)
+ ret |= info->map_bitmask;
+ else
+ ret &= ~info->map_bitmask;
+
+ ret = i2c_smbus_write_byte_data(data->client, info->map_reg,
+ ret);
+ if (ret < 0) {
+ dev_err(&data->client->dev, "Error writing reg_int_map\n");
+ goto out_fix_power_state;
+ }
+
+ /* enable/disable the interrupt */
+ ret = i2c_smbus_read_byte_data(data->client, info->en_reg);
+ if (ret < 0) {
+ dev_err(&data->client->dev, "Error reading reg_int_en\n");
+ goto out_fix_power_state;
+ }
+
+ if (state)
+ ret |= info->en_bitmask;
+ else
+ ret &= ~info->en_bitmask;
+
+ ret = i2c_smbus_write_byte_data(data->client, info->en_reg, ret);
+ if (ret < 0) {
+ dev_err(&data->client->dev, "Error writing reg_int_en\n");
+ goto out_fix_power_state;
+ }
+
+ return 0;
+
+out_fix_power_state:
+ bmc150_accel_set_power_state(data, false);
+ return ret;
+}
+
+static int bmc150_accel_setup_any_motion_interrupt(
+ struct bmc150_accel_data *data,
+ bool status)
+{
+ return bmc150_accel_set_interrupt(data, &bmc150_accel_interrupts[1],
+ status);
+}
+
+static int bmc150_accel_setup_new_data_interrupt(struct bmc150_accel_data *data,
+ bool status)
+{
+ return bmc150_accel_set_interrupt(data, &bmc150_accel_interrupts[0],
+ status);
+}
+
static int bmc150_accel_set_scale(struct bmc150_accel_data *data, int val)
{
int ret, i;
*val = data->slope_thres;
break;
case IIO_EV_INFO_PERIOD:
- *val = data->slope_dur & BMC150_ACCEL_SLOPE_DUR_MASK;
+ *val = data->slope_dur;
break;
default:
return -EINVAL;
switch (info) {
case IIO_EV_INFO_VALUE:
- data->slope_thres = val;
+ data->slope_thres = val & 0xFF;
break;
case IIO_EV_INFO_PERIOD:
- data->slope_dur &= ~BMC150_ACCEL_SLOPE_DUR_MASK;
- data->slope_dur |= val & BMC150_ACCEL_SLOPE_DUR_MASK;
+ data->slope_dur = val & BMC150_ACCEL_SLOPE_DUR_MASK;
break;
default:
return -EINVAL;
struct bmc150_accel_data *data = iio_priv(indio_dev);
int ret;
- if (state && data->ev_enable_state)
+ if (state == data->ev_enable_state)
return 0;
mutex_lock(&data->mutex);
return 0;
}
- /*
- * We will expect the enable and disable to do operation in
- * in reverse order. This will happen here anyway as our
- * resume operation uses sync mode runtime pm calls, the
- * suspend operation will be delayed by autosuspend delay
- * So the disable operation will still happen in reverse of
- * enable operation. When runtime pm is disabled the mode
- * is always on so sequence doesn't matter
- */
-
- ret = bmc150_accel_set_power_state(data, state);
- if (ret < 0) {
- mutex_unlock(&data->mutex);
- return ret;
- }
-
ret = bmc150_accel_setup_any_motion_interrupt(data, state);
if (ret < 0) {
- bmc150_accel_set_power_state(data, false);
mutex_unlock(&data->mutex);
return ret;
}
mutex_lock(&data->mutex);
+ if (data->motion_trig == trig) {
+ if (data->motion_trigger_on == state) {
+ mutex_unlock(&data->mutex);
+ return 0;
+ }
+ } else {
+ if (data->dready_trigger_on == state) {
+ mutex_unlock(&data->mutex);
+ return 0;
+ }
+ }
+
if (!state && data->ev_enable_state && data->motion_trigger_on) {
data->motion_trigger_on = false;
mutex_unlock(&data->mutex);
return 0;
}
- /*
- * Refer to comment in bmc150_accel_write_event_config for
- * enable/disable operation order
- */
- ret = bmc150_accel_set_power_state(data, state);
- if (ret < 0) {
- mutex_unlock(&data->mutex);
- return ret;
- }
- if (data->motion_trig == trig)
- ret = bmc150_accel_setup_any_motion_interrupt(data, state);
- else
+ if (data->motion_trig == trig) {
+ ret = bmc150_accel_update_slope(data);
+ if (!ret)
+ ret = bmc150_accel_setup_any_motion_interrupt(data,
+ state);
+ } else {
ret = bmc150_accel_setup_new_data_interrupt(data, state);
+ }
if (ret < 0) {
- bmc150_accel_set_power_state(data, false);
mutex_unlock(&data->mutex);
return ret;
}
dev = &client->dev;
/* data ready gpio interrupt pin */
- gpio = devm_gpiod_get_index(dev, BMC150_ACCEL_GPIO_NAME, 0);
+ gpio = devm_gpiod_get_index(dev, BMC150_ACCEL_GPIO_NAME, 0, GPIOD_IN);
if (IS_ERR(gpio)) {
dev_err(dev, "Failed: gpio get index\n");
return PTR_ERR(gpio);
}
- ret = gpiod_direction_input(gpio);
- if (ret)
- return ret;
-
ret = gpiod_to_irq(gpio);
dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret);
if (ret)
return ret;
+ /*
+ * Set latched mode interrupt. While certain interrupts are
+ * non-latched regardless of this settings (e.g. new data) we
+ * want to use latch mode when we can to prevent interrupt
+ * flooding.
+ */
+ ret = i2c_smbus_write_byte_data(data->client,
+ BMC150_ACCEL_REG_INT_RST_LATCH,
+ BMC150_ACCEL_INT_MODE_LATCH_RESET);
+ if (ret < 0) {
+ dev_err(&data->client->dev, "Error writing reg_int_rst_latch\n");
+ return ret;
+ }
+
data->dready_trig = devm_iio_trigger_alloc(&client->dev,
"%s-dev%d",
indio_dev->name,
projects / firefly-linux-kernel-4.4.55.git / blobdiff