Re: [PATCH v4 6/6] iio: imu: kmx61: Add support for any motion trigger

Jonathan Cameron
2014-12-12T13:54:27Z

On 03/12/14 13:31, Daniel Baluta wrote:
> We use WUFE (Wake Up from Sleep Engine) and BTSE (Back to Sleep Engine)
> to detect general motion input.
>
> Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Interesting patch. Looks good. Applied to the togreg branch of iio.git

Thanks,

A nice looking set.

Jonathan
> ---
> drivers/iio/imu/kmx61.c | 433 +++++++++++++++++++++++++++++++++++++++++++++++-
> 1 file changed, 426 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/iio/imu/kmx61.c b/drivers/iio/imu/kmx61.c
> index 0f6816a..972424b 100644
> --- a/drivers/iio/imu/kmx61.c
> +++ b/drivers/iio/imu/kmx61.c
> @@ -20,6 +20,7 @@
> #include <linux/pm_runtime.h>
> #include <linux/iio/iio.h>
> #include <linux/iio/sysfs.h>
> +#include <linux/iio/events.h>
> #include <linux/iio/trigger.h>
> #include <linux/iio/buffer.h>
> #include <linux/iio/triggered_buffer.h>
> @@ -30,6 +31,8 @@
> #define KMX61_IRQ_NAME "kmx61_event"
>
> #define KMX61_REG_WHO_AM_I 0x00
> +#define KMX61_REG_INS1 0x01
> +#define KMX61_REG_INS2 0x02
>
> /*
> * three 16-bit accelerometer output registers for X/Y/Z axis
> @@ -63,20 +66,36 @@
> #define KMX61_REG_INL 0x28
> #define KMX61_REG_STBY 0x29
> #define KMX61_REG_CTRL1 0x2A
> +#define KMX61_REG_CTRL2 0x2B
> #define KMX61_REG_ODCNTL 0x2C
> #define KMX61_REG_INC1 0x2D
>
> +#define KMX61_REG_WUF_THRESH 0x3D
> +#define KMX61_REG_WUF_TIMER 0x3E
> +
> #define KMX61_ACC_STBY_BIT BIT(0)
> #define KMX61_MAG_STBY_BIT BIT(1)
> #define KMX61_ACT_STBY_BIT BIT(7)
>
> #define KMX61_ALL_STBY (KMX61_ACC_STBY_BIT | KMX61_MAG_STBY_BIT)
>
> +#define KMX61_REG_INS1_BIT_WUFS BIT(1)
> +
> +#define KMX61_REG_INS2_BIT_ZP BIT(0)
> +#define KMX61_REG_INS2_BIT_ZN BIT(1)
> +#define KMX61_REG_INS2_BIT_YP BIT(2)
> +#define KMX61_REG_INS2_BIT_YN BIT(3)
> +#define KMX61_REG_INS2_BIT_XP BIT(4)
> +#define KMX61_REG_INS2_BIT_XN BIT(5)
> +
> #define KMX61_REG_CTRL1_GSEL_MASK 0x03
>
> #define KMX61_REG_CTRL1_BIT_RES BIT(4)
> #define KMX61_REG_CTRL1_BIT_DRDYE BIT(5)
> +#define KMX61_REG_CTRL1_BIT_WUFE BIT(6)
> +#define KMX61_REG_CTRL1_BIT_BTSE BIT(7)
>
> +#define KMX61_REG_INC1_BIT_WUFS BIT(0)
> #define KMX61_REG_INC1_BIT_DRDYM BIT(1)
> #define KMX61_REG_INC1_BIT_DRDYA BIT(2)
> #define KMX61_REG_INC1_BIT_IEN BIT(5)
> @@ -86,6 +105,11 @@
> #define KMX61_ACC_ODR_MASK 0x0F
> #define KMX61_MAG_ODR_MASK 0xF0
>
> +#define KMX61_OWUF_MASK 0x7
> +
> +#define KMX61_DEFAULT_WAKE_THRESH 1
> +#define KMX61_DEFAULT_WAKE_DURATION 1
> +
> #define KMX61_SLEEP_DELAY_MS 2000
>
> #define KMX61_CHIP_ID 0x12
> @@ -111,11 +135,16 @@ struct kmx61_data {
> /* config bits */
> u8 range;
> u8 odr_bits;
> + u8 wake_thresh;
> + u8 wake_duration;
>
> /* accelerometer specific data */
> struct iio_dev *acc_indio_dev;
> struct iio_trigger *acc_dready_trig;
> + struct iio_trigger *motion_trig;
> bool acc_dready_trig_on;
> + bool motion_trig_on;
> + bool ev_enable_state;
>
> /* magnetometer specific data */
> struct iio_dev *mag_indio_dev;
> @@ -154,6 +183,23 @@ static const struct {
> {3, 125000, 0x0A},
> {6, 250000, 0x0B} };
>
> +static const struct {
> + int val;
> + int val2;
> + int odr_bits;
> +} kmx61_wake_up_odr_table[] = { {0, 781000, 0x00},
> + {1, 563000, 0x01},
> + {3, 125000, 0x02},
> + {6, 250000, 0x03},
> + {12, 500000, 0x04},
> + {25, 0, 0x05},
> + {50, 0, 0x06},
> + {100, 0, 0x06},
> + {200, 0, 0x06},
> + {400, 0, 0x06},
> + {800, 0, 0x06},
> + {1600, 0, 0x06} };
> +
> static IIO_CONST_ATTR(accel_scale_available, "0.009582 0.019163 0.038326");
> static IIO_CONST_ATTR(magn_scale_available, "0.001465");
> static IIO_CONST_ATTR_SAMP_FREQ_AVAIL(
> @@ -179,6 +225,14 @@ static const struct attribute_group kmx61_mag_attribute_group = {
> .attrs = kmx61_mag_attributes,
> };
>
> +static const struct iio_event_spec kmx61_event = {
> + .type = IIO_EV_TYPE_THRESH,
> + .dir = IIO_EV_DIR_EITHER,
> + .mask_separate = BIT(IIO_EV_INFO_VALUE) |
> + BIT(IIO_EV_INFO_ENABLE) |
> + BIT(IIO_EV_INFO_PERIOD),
> +};
> +
> #define KMX61_ACC_CHAN(_axis) { \
> .type = IIO_ACCEL, \
> .modified = 1, \
> @@ -195,6 +249,8 @@ static const struct attribute_group kmx61_mag_attribute_group = {
> .shift = 4, \
> .endianness = IIO_LE, \
> }, \
> + .event_spec = &kmx61_event, \
> + .num_event_specs = 1 \
> }
>
> #define KMX61_MAG_CHAN(_axis) { \
> @@ -250,6 +306,31 @@ static int kmx61_convert_freq_to_bit(int val, int val2)
> return -EINVAL;
> }
>
> +static int kmx61_convert_bit_to_freq(u8 odr_bits, int *val, int *val2)
> +{
> + int i;
> +
> + for (i = 0; i < ARRAY_SIZE(kmx61_samp_freq_table); i++)
> + if (odr_bits == kmx61_samp_freq_table[i].odr_bits) {
> + *val = kmx61_samp_freq_table[i].val;
> + *val2 = kmx61_samp_freq_table[i].val2;
> + return 0;
> + }
> + return -EINVAL;
> +}
> +
> +
> +static int kmx61_convert_wake_up_odr_to_bit(int val, int val2)
> +{
> + int i;
> +
> + for (i = 0; i < ARRAY_SIZE(kmx61_wake_up_odr_table); ++i)
> + if (kmx61_wake_up_odr_table[i].val == val &&
> + kmx61_wake_up_odr_table[i].val2 == val2)
> + return kmx61_wake_up_odr_table[i].odr_bits;
> + return -EINVAL;
> +}
> +
> /**
> * kmx61_set_mode() - set KMX61 device operating mode
> * @data - kmx61 device private data pointer
> @@ -338,6 +419,21 @@ static int kmx61_get_mode(struct kmx61_data *data, u8 *mode, u8 device)
> return 0;
> }
>
> +int kmx61_set_wake_up_odr(struct kmx61_data *data, int val, int val2)
> +{
> + int ret, odr_bits;
> +
> + odr_bits = kmx61_convert_wake_up_odr_to_bit(val, val2);
> + if (odr_bits < 0)
> + return odr_bits;
> +
> + ret = i2c_smbus_write_byte_data(data->client, KMX61_REG_CTRL2,
> + odr_bits);
> + if (ret < 0)
> + dev_err(&data->client->dev, "Error writing reg_ctrl2\n");
> + return ret;
> +}
> +
> static int kmx61_set_odr(struct kmx61_data *data, int val, int val2, u8 device)
> {
> int ret;
> @@ -369,6 +465,12 @@ static int kmx61_set_odr(struct kmx61_data *data, int val, int val2, u8 device)
> if (ret < 0)
> return ret;
>
> + if (device & KMX61_ACC) {
> + ret = kmx61_set_wake_up_odr(data, val, val2);
> + if (ret)
> + return ret;
> + }
> +
> return kmx61_set_mode(data, mode, KMX61_ACC | KMX61_MAG, true);
> }
>
> @@ -449,7 +551,7 @@ static int kmx61_set_scale(struct kmx61_data *data, u16 uscale)
>
> static int kmx61_chip_init(struct kmx61_data *data)
> {
> - int ret;
> + int ret, val, val2;
>
> ret = i2c_smbus_read_byte_data(data->client, KMX61_REG_WHO_AM_I);
> if (ret < 0) {
> @@ -476,11 +578,23 @@ static int kmx61_chip_init(struct kmx61_data *data)
> }
> data->odr_bits = ret;
>
> + /* set output data rate for wake up (motion detection) function */
> + ret = kmx61_convert_bit_to_freq(data->odr_bits, &val, &val2);
> + if (ret < 0)
> + return ret;
> +
> + ret = kmx61_set_wake_up_odr(data, val, val2);
> + if (ret < 0)
> + return ret;
> +
> /* set acc/magn to OPERATION mode */
> ret = kmx61_set_mode(data, 0, KMX61_ACC | KMX61_MAG, true);
> if (ret < 0)
> return ret;
>
> + data->wake_thresh = KMX61_DEFAULT_WAKE_THRESH;
> + data->wake_duration = KMX61_DEFAULT_WAKE_DURATION;
> +
> return 0;
> }
>
> @@ -547,6 +661,87 @@ static int kmx61_setup_new_data_interrupt(struct kmx61_data *data,
> return 0;
> }
>
> +static int kmx61_chip_update_thresholds(struct kmx61_data *data)
> +{
> + int ret;
> +
> + ret = i2c_smbus_write_byte_data(data->client,
> + KMX61_REG_WUF_TIMER,
> + data->wake_duration);
> + if (ret < 0) {
> + dev_err(&data->client->dev, "Errow writing reg_wuf_timer\n");
> + return ret;
> + }
> +
> + ret = i2c_smbus_write_byte_data(data->client,
> + KMX61_REG_WUF_THRESH,
> + data->wake_thresh);
> + if (ret < 0) {
> + dev_err(&data->client->dev, "Error writing reg_wuf_thresh\n");
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static int kmx61_setup_any_motion_interrupt(struct kmx61_data *data,
> + bool status, u8 device)
> +{
> + u8 mode;
> + int ret;
> +
> + ret = kmx61_get_mode(data, &mode, KMX61_ACC | KMX61_MAG);
> + if (ret < 0)
> + return ret;
> +
> + ret = kmx61_set_mode(data, KMX61_ALL_STBY, KMX61_ACC | KMX61_MAG, true);
> + if (ret < 0)
> + return ret;
> +
> + ret = kmx61_chip_update_thresholds(data);
> + if (ret < 0)
> + return ret;
> +
> + ret = i2c_smbus_read_byte_data(data->client, KMX61_REG_INC1);
> + if (ret < 0) {
> + dev_err(&data->client->dev, "Error reading reg_inc1\n");
> + return ret;
> + }
> + if (status)
> + ret |= (KMX61_REG_INC1_BIT_IEN | KMX61_REG_INC1_BIT_WUFS);
> + else
> + ret &= ~(KMX61_REG_INC1_BIT_IEN | KMX61_REG_INC1_BIT_WUFS);
> +
> + ret = i2c_smbus_write_byte_data(data->client, KMX61_REG_INC1, ret);
> + if (ret < 0) {
> + dev_err(&data->client->dev, "Error writing reg_inc1\n");
> + return ret;
> + }
> +
> + ret = i2c_smbus_read_byte_data(data->client, KMX61_REG_CTRL1);
> + if (ret < 0) {
> + dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
> + return ret;
> + }
> +
> + if (status)
> + ret |= KMX61_REG_CTRL1_BIT_WUFE | KMX61_REG_CTRL1_BIT_BTSE;
> + else
> + ret &= ~(KMX61_REG_CTRL1_BIT_WUFE | KMX61_REG_CTRL1_BIT_BTSE);
> +
> + ret = i2c_smbus_write_byte_data(data->client, KMX61_REG_CTRL1, ret);
> + if (ret < 0) {
> + dev_err(&data->client->dev, "Error writing reg_ctrl1\n");
> + return ret;
> + }
> + mode |= KMX61_ACT_STBY_BIT;
> + ret = kmx61_set_mode(data, mode, KMX61_ACC | KMX61_MAG, true);
> + if (ret)
> + return ret;
> +
> + return 0;
> +}
> +
> /**
> * kmx61_set_power_state() - set power state for kmx61 @device
> * @data - kmx61 device private pointer
> @@ -707,12 +902,111 @@ static int kmx61_write_raw(struct iio_dev *indio_dev,
> }
> }
>
> +static int kmx61_read_event(struct iio_dev *indio_dev,
> + const struct iio_chan_spec *chan,
> + enum iio_event_type type,
> + enum iio_event_direction dir,
> + enum iio_event_info info,
> + int *val, int *val2)
> +{
> + struct kmx61_data *data = kmx61_get_data(indio_dev);
> +
> + *val2 = 0;
> + switch (info) {
> + case IIO_EV_INFO_VALUE:
> + *val = data->wake_thresh;
> + break;
> + case IIO_EV_INFO_PERIOD:
> + *val = data->wake_duration;
> + break;
> + default:
> + return -EINVAL;
> + }
> +
> + return IIO_VAL_INT;
> +}
> +
> +static int kmx61_write_event(struct iio_dev *indio_dev,
> + const struct iio_chan_spec *chan,
> + enum iio_event_type type,
> + enum iio_event_direction dir,
> + enum iio_event_info info,
> + int val, int val2)
> +{
> + struct kmx61_data *data = kmx61_get_data(indio_dev);
> +
> + if (data->ev_enable_state)
> + return -EBUSY;
> +
> + switch (info) {
> + case IIO_EV_INFO_VALUE:
> + data->wake_thresh = val;
> + break;
> + case IIO_EV_INFO_PERIOD:
> + data->wake_duration = val;
> + break;
> + default:
> + return -EINVAL;
> + }
> +
> + return IIO_VAL_INT;
> +}
> +
> +static int kmx61_read_event_config(struct iio_dev *indio_dev,
> + const struct iio_chan_spec *chan,
> + enum iio_event_type type,
> + enum iio_event_direction dir)
> +{
> + struct kmx61_data *data = kmx61_get_data(indio_dev);
> +
> + return data->ev_enable_state;
> +}
> +
> +static int kmx61_write_event_config(struct iio_dev *indio_dev,
> + const struct iio_chan_spec *chan,
> + enum iio_event_type type,
> + enum iio_event_direction dir,
> + int state)
> +{
> + struct kmx61_data *data = kmx61_get_data(indio_dev);
> + int ret;
> +
> + if (state && data->ev_enable_state)
> + return 0;
> +
> + mutex_lock(&data->lock);
> +
> + if (!state && data->motion_trig_on) {
> + data->ev_enable_state = 0;
> + mutex_unlock(&data->lock);
> + return 0;
> + }
> +
> + ret = kmx61_set_power_state(data, state, KMX61_ACC);
> + if (ret < 0) {
> + mutex_unlock(&data->lock);
> + return ret;
> + }
> +
> + ret = kmx61_setup_any_motion_interrupt(data, state, KMX61_ACC);
> + if (ret < 0) {
> + kmx61_set_power_state(data, false, KMX61_ACC);
> + mutex_unlock(&data->lock);
> + return ret;
> + }
> +
> + data->ev_enable_state = state;
> + mutex_unlock(&data->lock);
> +
> + return 0;
> +}
> +
> static int kmx61_acc_validate_trigger(struct iio_dev *indio_dev,
> struct iio_trigger *trig)
> {
> struct kmx61_data *data = kmx61_get_data(indio_dev);
>
> - if (data->acc_dready_trig != trig)
> + if (data->acc_dready_trig != trig && data->motion_trig != trig)
> return -EINVAL;
>
> return 0;
> @@ -734,6 +1028,10 @@ static const struct iio_info kmx61_acc_info = {
> .read_raw = kmx61_read_raw,
> .write_raw = kmx61_write_raw,
> .attrs = &kmx61_acc_attribute_group,
> + .read_event_value = kmx61_read_event,
> + .write_event_value = kmx61_write_event,
> + .read_event_config = kmx61_read_event_config,
> + .write_event_config = kmx61_write_event_config,
> .validate_trigger = kmx61_acc_validate_trigger,
> };
>
> @@ -753,11 +1051,18 @@ static int kmx61_data_rdy_trigger_set_state(struct iio_trigger *trig,
> u8 device;
>
> struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
> - struct kmx61_data *data = iio_priv(indio_dev);
> + struct kmx61_data *data = kmx61_get_data(indio_dev);
>
> mutex_lock(&data->lock);
>
> - if (data->acc_dready_trig == trig)
> + if (!state && data->ev_enable_state && data->motion_trig_on) {
> + data->motion_trig_on = false;
> + mutex_unlock(&data->lock);
> + return 0;
> + }
> +
> +
> + if (data->acc_dready_trig == trig || data->motion_trig)
> device = KMX61_ACC;
> else
> device = KMX61_MAG;
> @@ -768,7 +1073,10 @@ static int kmx61_data_rdy_trigger_set_state(struct iio_trigger *trig,
> return ret;
> }
>
> - ret = kmx61_setup_new_data_interrupt(data, state, device);
> + if (data->acc_dready_trig == trig || data->mag_dready_trig == trig)
> + ret = kmx61_setup_new_data_interrupt(data, state, device);
> + else
> + ret = kmx61_setup_any_motion_interrupt(data, state, KMX61_ACC);
> if (ret < 0) {
> kmx61_set_power_state(data, false, device);
> mutex_unlock(&data->lock);
> @@ -777,8 +1085,10 @@ static int kmx61_data_rdy_trigger_set_state(struct iio_trigger *trig,
>
> if (data->acc_dready_trig == trig)
> data->acc_dready_trig_on = state;
> - else
> + else if (data->mag_dready_trig == trig)
> data->mag_dready_trig_on = state;
> + else
> + data->motion_trig_on = state;
>
> mutex_unlock(&data->lock);
>
> @@ -806,6 +1116,99 @@ static const struct iio_trigger_ops kmx61_trigger_ops = {
> .owner = THIS_MODULE,
> };
>
> +static irqreturn_t kmx61_event_handler(int irq, void *private)
> +{
> + struct kmx61_data *data = private;
> + struct iio_dev *indio_dev = data->acc_indio_dev;
> + int ret;
> +
> + ret = i2c_smbus_read_byte_data(data->client, KMX61_REG_INS1);
> + if (ret < 0) {
> + dev_err(&data->client->dev, "Error reading reg_ins1\n");
> + goto ack_intr;
> + }
> +
> + if (ret & KMX61_REG_INS1_BIT_WUFS) {
> + ret = i2c_smbus_read_byte_data(data->client, KMX61_REG_INS2);
> + if (ret < 0) {
> + dev_err(&data->client->dev, "Error reading reg_ins2\n");
> + goto ack_intr;
> + }
> +
> + if (ret & KMX61_REG_INS2_BIT_XN)
> + iio_push_event(indio_dev,
> + IIO_MOD_EVENT_CODE(IIO_ACCEL,
> + 0,
> + IIO_MOD_X,
> + IIO_EV_TYPE_THRESH,
> + IIO_EV_DIR_FALLING),
> + 0);
> +
> + if (ret & KMX61_REG_INS2_BIT_XP)
> + iio_push_event(indio_dev,
> + IIO_MOD_EVENT_CODE(IIO_ACCEL,
> + 0,
> + IIO_MOD_X,
> + IIO_EV_TYPE_THRESH,
> + IIO_EV_DIR_RISING),
> + 0);
> +
> + if (ret & KMX61_REG_INS2_BIT_YN)
> + iio_push_event(indio_dev,
> + IIO_MOD_EVENT_CODE(IIO_ACCEL,
> + 0,
> + IIO_MOD_Y,
> + IIO_EV_TYPE_THRESH,
> + IIO_EV_DIR_FALLING),
> + 0);
> +
> + if (ret & KMX61_REG_INS2_BIT_YP)
> + iio_push_event(indio_dev,
> + IIO_MOD_EVENT_CODE(IIO_ACCEL,
> + 0,
> + IIO_MOD_Y,
> + IIO_EV_TYPE_THRESH,
> + IIO_EV_DIR_RISING),
> + 0);
> +
> + if (ret & KMX61_REG_INS2_BIT_ZN)
> + iio_push_event(indio_dev,
> + IIO_MOD_EVENT_CODE(IIO_ACCEL,
> + 0,
> + IIO_MOD_Z,
> + IIO_EV_TYPE_THRESH,
> + IIO_EV_DIR_FALLING),
> + 0);
> +
> + if (ret & KMX61_REG_INS2_BIT_ZP)
> + iio_push_event(indio_dev,
> + IIO_MOD_EVENT_CODE(IIO_ACCEL,
> + 0,
> + IIO_MOD_Z,
> + IIO_EV_TYPE_THRESH,
> + IIO_EV_DIR_RISING),
> + 0);
> + }
> +
> +ack_intr:
> + ret = i2c_smbus_read_byte_data(data->client, KMX61_REG_CTRL1);
> + if (ret < 0)
> + dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
> +
> + ret |= KMX61_REG_CTRL1_BIT_RES;
> + ret = i2c_smbus_write_byte_data(data->client, KMX61_REG_CTRL1, ret);
> + if (ret < 0)
> + dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
> +
> + ret = i2c_smbus_read_byte_data(data->client, KMX61_REG_INL);
> + if (ret < 0)
> + dev_err(&data->client->dev, "Error reading reg_inl\n");
> +
> + ret = i2c_smbus_read_byte_data(data->client, KMX61_REG_INS1);
> +
> + return IRQ_HANDLED;
> +}
> +
> static irqreturn_t kmx61_data_rdy_trig_poll(int irq, void *private)
> {
> struct kmx61_data *data = private;
> @@ -815,6 +1218,11 @@ static irqreturn_t kmx61_data_rdy_trig_poll(int irq, void *private)
> if (data->mag_dready_trig_on)
> iio_trigger_poll(data->mag_dready_trig);
>
> + if (data->motion_trig_on)
> + iio_trigger_poll(data->motion_trig);
> +
> + if (data->ev_enable_state)
> + return IRQ_WAKE_THREAD;
> return IRQ_HANDLED;
> }
>
> @@ -982,7 +1390,7 @@ static int kmx61_probe(struct i2c_client *client,
> if (client->irq >= 0) {
> ret = devm_request_threaded_irq(&client->dev, client->irq,
> kmx61_data_rdy_trig_poll,
> - NULL,
> + kmx61_event_handler,
> IRQF_TRIGGER_RISING,
> KMX61_IRQ_NAME,
> data);
> @@ -1003,6 +1411,14 @@ static int kmx61_probe(struct i2c_client *client,
> goto err_trigger_unregister;
> }
>
> + data->motion_trig =
> + kmx61_trigger_setup(data, data->acc_indio_dev,
> + "any-motion");
> + if (IS_ERR(data->motion_trig)) {
> + ret = PTR_ERR(data->motion_trig);
> + goto err_trigger_unregister;
> + }
> +
> ret = iio_triggered_buffer_setup(data->acc_indio_dev,
> &iio_pollfunc_store_time,
> kmx61_trigger_handler,
> @@ -1060,6 +1476,8 @@ err_trigger_unregister:
> iio_trigger_unregister(data->acc_dready_trig);
> if (data->mag_dready_trig)
> iio_trigger_unregister(data->mag_dready_trig);
> + if (data->motion_trig)
> + iio_trigger_unregister(data->motion_trig);
> err_chip_uninit:
> kmx61_set_mode(data, KMX61_ALL_STBY, KMX61_ACC | KMX61_MAG, true);
> return ret;
> @@ -1081,6 +1499,7 @@ static int kmx61_remove(struct i2c_client *client)
> iio_triggered_buffer_cleanup(data->mag_indio_dev);
> iio_trigger_unregister(data->acc_dready_trig);
> iio_trigger_unregister(data->mag_dready_trig);
> + iio_trigger_unregister(data->motion_trig);
> }
>
> mutex_lock(&data->lock);
>