| Message ID | 20190916135630.2211714-2-sean@geanix.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v10,1/5] iio: imu: st_lsm6dsx: move interrupt thread to core | expand |
On Mon, 16 Sep 2019 15:56:27 +0200 Sean Nyekjaer <sean@geanix.com> wrote: > Add event channels that controls the creation of motion events. > Tested on ISM330DLC > > Signed-off-by: Sean Nyekjaer <sean@geanix.com> st_lsm6dsx_event_setup not declared.. Fixed up by adding static marking. Applied Thanks, Jonathan > --- > Changes since v4: > * Added check for event support > * Added registers for more devices that support this event > > Changes since v5: > * Moved wakeup_src masks to PATCH 5/6 > > Changes since v6: > * None > > Changes since v7: > * None > > Changes since v8: > * None > > Changes since v10: > * enable_event changed to a u8 > > drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h | 41 ++++ > drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 191 ++++++++++++++++++- > 2 files changed, 228 insertions(+), 4 deletions(-) > > diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h > index 21d14072d1c6..6b0ba48394eb 100644 > --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h > +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h > @@ -12,6 +12,7 @@ > #define ST_LSM6DSX_H > > #include <linux/device.h> > +#include <linux/iio/iio.h> > > #define ST_LSM6DS3_DEV_NAME "lsm6ds3" > #define ST_LSM6DS3H_DEV_NAME "lsm6ds3h" > @@ -54,6 +55,26 @@ enum st_lsm6dsx_hw_id { > * ST_LSM6DSX_TAGGED_SAMPLE_SIZE) > #define ST_LSM6DSX_SHIFT_VAL(val, mask) (((val) << __ffs(mask)) & (mask)) > > +#define ST_LSM6DSX_CHANNEL_ACC(chan_type, addr, mod, scan_idx) \ > +{ \ > + .type = chan_type, \ > + .address = addr, \ > + .modified = 1, \ > + .channel2 = mod, \ > + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ > + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ > + .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), \ > + .scan_index = scan_idx, \ > + .scan_type = { \ > + .sign = 's', \ > + .realbits = 16, \ > + .storagebits = 16, \ > + .endianness = IIO_LE, \ > + }, \ > + .event_spec = &st_lsm6dsx_event, \ > + .num_event_specs = 1, \ > +} > + > #define ST_LSM6DSX_CHANNEL(chan_type, addr, mod, scan_idx) \ > { \ > .type = chan_type, \ > @@ -162,6 +183,11 @@ struct st_lsm6dsx_shub_settings { > u8 batch_en; > }; > > +struct st_lsm6dsx_event_settings { > + struct st_lsm6dsx_reg enable_reg; > + struct st_lsm6dsx_reg wakeup_reg; > +}; > + > enum st_lsm6dsx_ext_sensor_id { > ST_LSM6DSX_ID_MAGN, > }; > @@ -225,6 +251,9 @@ struct st_lsm6dsx_settings { > u8 wai; > u8 int1_addr; > u8 int2_addr; > + u8 int1_func_addr; > + u8 int2_func_addr; > + u8 int_func_mask; > u8 reset_addr; > u16 max_fifo_size; > struct { > @@ -244,6 +273,7 @@ struct st_lsm6dsx_settings { > struct st_lsm6dsx_fifo_ops fifo_ops; > struct st_lsm6dsx_hw_ts_settings ts_settings; > struct st_lsm6dsx_shub_settings shub_settings; > + struct st_lsm6dsx_event_settings event_settings; > }; > > enum st_lsm6dsx_sensor_id { > @@ -324,6 +354,10 @@ struct st_lsm6dsx_hw { > u8 ts_sip; > u8 sip; > > + u8 event_threshold; > + u8 enable_event; > + struct st_lsm6dsx_reg irq_routing; > + > u8 *buff; > > struct iio_dev *iio_devs[ST_LSM6DSX_ID_MAX]; > @@ -331,6 +365,13 @@ struct st_lsm6dsx_hw { > const struct st_lsm6dsx_settings *settings; > }; > > +static const struct iio_event_spec st_lsm6dsx_event = { > + .type = IIO_EV_TYPE_THRESH, > + .dir = IIO_EV_DIR_EITHER, > + .mask_separate = BIT(IIO_EV_INFO_VALUE) | > + BIT(IIO_EV_INFO_ENABLE) > +}; > + > static const unsigned long st_lsm6dsx_available_scan_masks[] = {0x7, 0x0}; > extern const struct dev_pm_ops st_lsm6dsx_pm_ops; > > diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c > index ef838206b30f..4198ba263d03 100644 > --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c > +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c > @@ -73,9 +73,9 @@ > #define ST_LSM6DSX_REG_PP_OD_MASK BIT(4) > > static const struct iio_chan_spec st_lsm6dsx_acc_channels[] = { > - ST_LSM6DSX_CHANNEL(IIO_ACCEL, 0x28, IIO_MOD_X, 0), > - ST_LSM6DSX_CHANNEL(IIO_ACCEL, 0x2a, IIO_MOD_Y, 1), > - ST_LSM6DSX_CHANNEL(IIO_ACCEL, 0x2c, IIO_MOD_Z, 2), > + ST_LSM6DSX_CHANNEL_ACC(IIO_ACCEL, 0x28, IIO_MOD_X, 0), > + ST_LSM6DSX_CHANNEL_ACC(IIO_ACCEL, 0x2a, IIO_MOD_Y, 1), > + ST_LSM6DSX_CHANNEL_ACC(IIO_ACCEL, 0x2c, IIO_MOD_Z, 2), > IIO_CHAN_SOFT_TIMESTAMP(3), > }; > > @@ -168,6 +168,9 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = { > .wai = 0x69, > .int1_addr = 0x0d, > .int2_addr = 0x0e, > + .int1_func_addr = 0x5e, > + .int2_func_addr = 0x5f, > + .int_func_mask = BIT(5), > .reset_addr = 0x12, > .max_fifo_size = 1365, > .id = { > @@ -279,11 +282,20 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = { > .mask = GENMASK(5, 3), > }, > }, > + .event_settings = { > + .wakeup_reg = { > + .addr = 0x5B, > + .mask = GENMASK(5, 0), > + }, > + }, > }, > { > .wai = 0x69, > .int1_addr = 0x0d, > .int2_addr = 0x0e, > + .int1_func_addr = 0x5e, > + .int2_func_addr = 0x5f, > + .int_func_mask = BIT(5), > .reset_addr = 0x12, > .max_fifo_size = 682, > .id = { > @@ -395,11 +407,20 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = { > .mask = GENMASK(5, 3), > }, > }, > + .event_settings = { > + .wakeup_reg = { > + .addr = 0x5B, > + .mask = GENMASK(5, 0), > + }, > + }, > }, > { > .wai = 0x6a, > .int1_addr = 0x0d, > .int2_addr = 0x0e, > + .int1_func_addr = 0x5e, > + .int2_func_addr = 0x5f, > + .int_func_mask = BIT(5), > .reset_addr = 0x12, > .max_fifo_size = 682, > .id = { > @@ -520,6 +541,16 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = { > .mask = GENMASK(5, 3), > }, > }, > + .event_settings = { > + .enable_reg = { > + .addr = 0x58, > + .mask = BIT(7), > + }, > + .wakeup_reg = { > + .addr = 0x5B, > + .mask = GENMASK(5, 0), > + }, > + }, > }, > { > .wai = 0x6c, > @@ -666,6 +697,9 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = { > .wai = 0x6b, > .int1_addr = 0x0d, > .int2_addr = 0x0e, > + .int1_func_addr = 0x5e, > + .int2_func_addr = 0x5f, > + .int_func_mask = BIT(5), > .reset_addr = 0x12, > .max_fifo_size = 512, > .id = { > @@ -773,11 +807,24 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = { > .mask = GENMASK(7, 6), > }, > }, > + .event_settings = { > + .enable_reg = { > + .addr = 0x58, > + .mask = BIT(7), > + }, > + .wakeup_reg = { > + .addr = 0x5B, > + .mask = GENMASK(5, 0), > + }, > + }, > }, > { > .wai = 0x6b, > .int1_addr = 0x0d, > .int2_addr = 0x0e, > + .int1_func_addr = 0x5e, > + .int2_func_addr = 0x5f, > + .int_func_mask = BIT(5), > .reset_addr = 0x12, > .max_fifo_size = 512, > .id = { > @@ -913,6 +960,16 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = { > .slv0_addr = 0x15, > .dw_slv0_addr = 0x21, > .batch_en = BIT(3), > + }, > + .event_settings = { > + .enable_reg = { > + .addr = 0x58, > + .mask = BIT(7), > + }, > + .wakeup_reg = { > + .addr = 0x5B, > + .mask = GENMASK(5, 0), > + }, > } > }, > }; > @@ -1119,7 +1176,8 @@ static int st_lsm6dsx_read_oneshot(struct st_lsm6dsx_sensor *sensor, > if (err < 0) > return err; > > - st_lsm6dsx_sensor_set_enable(sensor, false); > + if (!hw->enable_event) > + st_lsm6dsx_sensor_set_enable(sensor, false); > > *val = (s16)le16_to_cpu(data); > > @@ -1192,6 +1250,123 @@ static int st_lsm6dsx_write_raw(struct iio_dev *iio_dev, > return err; > } > > +int st_lsm6dsx_event_setup(struct st_lsm6dsx_hw *hw, int state) > +{ > + int err; > + u8 enable = 0; > + > + if (!hw->settings->int1_func_addr) > + return -ENOTSUPP; > + > + enable = state ? hw->settings->event_settings.enable_reg.mask : 0; > + > + err = regmap_update_bits(hw->regmap, > + hw->settings->event_settings.enable_reg.addr, > + hw->settings->event_settings.enable_reg.mask, > + enable); > + if (err < 0) > + return err; > + > + enable = state ? hw->irq_routing.mask : 0; > + > + /* Enable wakeup interrupt */ > + return regmap_update_bits(hw->regmap, hw->irq_routing.addr, > + hw->irq_routing.mask, > + enable); > +} > + > +static int st_lsm6dsx_read_event(struct iio_dev *iio_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 st_lsm6dsx_sensor *sensor = iio_priv(iio_dev); > + struct st_lsm6dsx_hw *hw = sensor->hw; > + > + if (type != IIO_EV_TYPE_THRESH) > + return -EINVAL; > + > + *val2 = 0; > + *val = hw->event_threshold; > + > + return IIO_VAL_INT; > +} > + > +static int st_lsm6dsx_write_event(struct iio_dev *iio_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 st_lsm6dsx_sensor *sensor = iio_priv(iio_dev); > + struct st_lsm6dsx_hw *hw = sensor->hw; > + int err; > + > + if (type != IIO_EV_TYPE_THRESH) > + return -EINVAL; > + > + if (val < 0 || val > 31) > + return -EINVAL; > + > + err = regmap_update_bits(hw->regmap, > + hw->settings->event_settings.wakeup_reg.addr, > + hw->settings->event_settings.wakeup_reg.mask, > + val); > + if (err) > + return -EINVAL; > + > + hw->event_threshold = val; > + > + return 0; > +} > + > +static int st_lsm6dsx_read_event_config(struct iio_dev *iio_dev, > + const struct iio_chan_spec *chan, > + enum iio_event_type type, > + enum iio_event_direction dir) > +{ > + struct st_lsm6dsx_sensor *sensor = iio_priv(iio_dev); > + struct st_lsm6dsx_hw *hw = sensor->hw; > + > + if (type != IIO_EV_TYPE_THRESH) > + return -EINVAL; > + > + return hw->enable_event; > +} > + > +static int st_lsm6dsx_write_event_config(struct iio_dev *iio_dev, > + const struct iio_chan_spec *chan, > + enum iio_event_type type, > + enum iio_event_direction dir, > + int state) > +{ > + struct st_lsm6dsx_sensor *sensor = iio_priv(iio_dev); > + struct st_lsm6dsx_hw *hw = sensor->hw; > + int err = 0; > + > + if (type != IIO_EV_TYPE_THRESH) > + return -EINVAL; > + > + /* do not enable events if they are already enabled */ > + if (state && hw->enable_event) > + return 0; > + > + err = st_lsm6dsx_event_setup(hw, state); > + if (err < 0) > + return err; > + > + err = st_lsm6dsx_sensor_set_enable(sensor, state); > + if (err < 0) > + return err; > + > + hw->enable_event = state; > + > + return 0; > +} > + > int st_lsm6dsx_set_watermark(struct iio_dev *iio_dev, unsigned int val) > { > struct st_lsm6dsx_sensor *sensor = iio_priv(iio_dev); > @@ -1276,6 +1451,10 @@ static const struct iio_info st_lsm6dsx_acc_info = { > .attrs = &st_lsm6dsx_acc_attribute_group, > .read_raw = st_lsm6dsx_read_raw, > .write_raw = st_lsm6dsx_write_raw, > + .read_event_value = st_lsm6dsx_read_event, > + .write_event_value = st_lsm6dsx_write_event, > + .read_event_config = st_lsm6dsx_read_event_config, > + .write_event_config = st_lsm6dsx_write_event_config, > .hwfifo_set_watermark = st_lsm6dsx_set_watermark, > }; > > @@ -1321,9 +1500,13 @@ static int st_lsm6dsx_get_drdy_reg(struct st_lsm6dsx_hw *hw, u8 *drdy_reg) > switch (drdy_pin) { > case 1: > *drdy_reg = hw->settings->int1_addr; > + hw->irq_routing.addr = hw->settings->int1_func_addr; > + hw->irq_routing.mask = hw->settings->int_func_mask; > break; > case 2: > *drdy_reg = hw->settings->int2_addr; > + hw->irq_routing.addr = hw->settings->int2_func_addr; > + hw->irq_routing.mask = hw->settings->int_func_mask; > break; > default: > dev_err(hw->dev, "unsupported data ready pin\n");
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h index 21d14072d1c6..6b0ba48394eb 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h @@ -12,6 +12,7 @@ #define ST_LSM6DSX_H #include <linux/device.h> +#include <linux/iio/iio.h> #define ST_LSM6DS3_DEV_NAME "lsm6ds3" #define ST_LSM6DS3H_DEV_NAME "lsm6ds3h" @@ -54,6 +55,26 @@ enum st_lsm6dsx_hw_id { * ST_LSM6DSX_TAGGED_SAMPLE_SIZE) #define ST_LSM6DSX_SHIFT_VAL(val, mask) (((val) << __ffs(mask)) & (mask)) +#define ST_LSM6DSX_CHANNEL_ACC(chan_type, addr, mod, scan_idx) \ +{ \ + .type = chan_type, \ + .address = addr, \ + .modified = 1, \ + .channel2 = mod, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ + .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), \ + .scan_index = scan_idx, \ + .scan_type = { \ + .sign = 's', \ + .realbits = 16, \ + .storagebits = 16, \ + .endianness = IIO_LE, \ + }, \ + .event_spec = &st_lsm6dsx_event, \ + .num_event_specs = 1, \ +} + #define ST_LSM6DSX_CHANNEL(chan_type, addr, mod, scan_idx) \ { \ .type = chan_type, \ @@ -162,6 +183,11 @@ struct st_lsm6dsx_shub_settings { u8 batch_en; }; +struct st_lsm6dsx_event_settings { + struct st_lsm6dsx_reg enable_reg; + struct st_lsm6dsx_reg wakeup_reg; +}; + enum st_lsm6dsx_ext_sensor_id { ST_LSM6DSX_ID_MAGN, }; @@ -225,6 +251,9 @@ struct st_lsm6dsx_settings { u8 wai; u8 int1_addr; u8 int2_addr; + u8 int1_func_addr; + u8 int2_func_addr; + u8 int_func_mask; u8 reset_addr; u16 max_fifo_size; struct { @@ -244,6 +273,7 @@ struct st_lsm6dsx_settings { struct st_lsm6dsx_fifo_ops fifo_ops; struct st_lsm6dsx_hw_ts_settings ts_settings; struct st_lsm6dsx_shub_settings shub_settings; + struct st_lsm6dsx_event_settings event_settings; }; enum st_lsm6dsx_sensor_id { @@ -324,6 +354,10 @@ struct st_lsm6dsx_hw { u8 ts_sip; u8 sip; + u8 event_threshold; + u8 enable_event; + struct st_lsm6dsx_reg irq_routing; + u8 *buff; struct iio_dev *iio_devs[ST_LSM6DSX_ID_MAX]; @@ -331,6 +365,13 @@ struct st_lsm6dsx_hw { const struct st_lsm6dsx_settings *settings; }; +static const struct iio_event_spec st_lsm6dsx_event = { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_EITHER, + .mask_separate = BIT(IIO_EV_INFO_VALUE) | + BIT(IIO_EV_INFO_ENABLE) +}; + static const unsigned long st_lsm6dsx_available_scan_masks[] = {0x7, 0x0}; extern const struct dev_pm_ops st_lsm6dsx_pm_ops; diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c index ef838206b30f..4198ba263d03 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c @@ -73,9 +73,9 @@ #define ST_LSM6DSX_REG_PP_OD_MASK BIT(4) static const struct iio_chan_spec st_lsm6dsx_acc_channels[] = { - ST_LSM6DSX_CHANNEL(IIO_ACCEL, 0x28, IIO_MOD_X, 0), - ST_LSM6DSX_CHANNEL(IIO_ACCEL, 0x2a, IIO_MOD_Y, 1), - ST_LSM6DSX_CHANNEL(IIO_ACCEL, 0x2c, IIO_MOD_Z, 2), + ST_LSM6DSX_CHANNEL_ACC(IIO_ACCEL, 0x28, IIO_MOD_X, 0), + ST_LSM6DSX_CHANNEL_ACC(IIO_ACCEL, 0x2a, IIO_MOD_Y, 1), + ST_LSM6DSX_CHANNEL_ACC(IIO_ACCEL, 0x2c, IIO_MOD_Z, 2), IIO_CHAN_SOFT_TIMESTAMP(3), }; @@ -168,6 +168,9 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = { .wai = 0x69, .int1_addr = 0x0d, .int2_addr = 0x0e, + .int1_func_addr = 0x5e, + .int2_func_addr = 0x5f, + .int_func_mask = BIT(5), .reset_addr = 0x12, .max_fifo_size = 1365, .id = { @@ -279,11 +282,20 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = { .mask = GENMASK(5, 3), }, }, + .event_settings = { + .wakeup_reg = { + .addr = 0x5B, + .mask = GENMASK(5, 0), + }, + }, }, { .wai = 0x69, .int1_addr = 0x0d, .int2_addr = 0x0e, + .int1_func_addr = 0x5e, + .int2_func_addr = 0x5f, + .int_func_mask = BIT(5), .reset_addr = 0x12, .max_fifo_size = 682, .id = { @@ -395,11 +407,20 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = { .mask = GENMASK(5, 3), }, }, + .event_settings = { + .wakeup_reg = { + .addr = 0x5B, + .mask = GENMASK(5, 0), + }, + }, }, { .wai = 0x6a, .int1_addr = 0x0d, .int2_addr = 0x0e, + .int1_func_addr = 0x5e, + .int2_func_addr = 0x5f, + .int_func_mask = BIT(5), .reset_addr = 0x12, .max_fifo_size = 682, .id = { @@ -520,6 +541,16 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = { .mask = GENMASK(5, 3), }, }, + .event_settings = { + .enable_reg = { + .addr = 0x58, + .mask = BIT(7), + }, + .wakeup_reg = { + .addr = 0x5B, + .mask = GENMASK(5, 0), + }, + }, }, { .wai = 0x6c, @@ -666,6 +697,9 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = { .wai = 0x6b, .int1_addr = 0x0d, .int2_addr = 0x0e, + .int1_func_addr = 0x5e, + .int2_func_addr = 0x5f, + .int_func_mask = BIT(5), .reset_addr = 0x12, .max_fifo_size = 512, .id = { @@ -773,11 +807,24 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = { .mask = GENMASK(7, 6), }, }, + .event_settings = { + .enable_reg = { + .addr = 0x58, + .mask = BIT(7), + }, + .wakeup_reg = { + .addr = 0x5B, + .mask = GENMASK(5, 0), + }, + }, }, { .wai = 0x6b, .int1_addr = 0x0d, .int2_addr = 0x0e, + .int1_func_addr = 0x5e, + .int2_func_addr = 0x5f, + .int_func_mask = BIT(5), .reset_addr = 0x12, .max_fifo_size = 512, .id = { @@ -913,6 +960,16 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = { .slv0_addr = 0x15, .dw_slv0_addr = 0x21, .batch_en = BIT(3), + }, + .event_settings = { + .enable_reg = { + .addr = 0x58, + .mask = BIT(7), + }, + .wakeup_reg = { + .addr = 0x5B, + .mask = GENMASK(5, 0), + }, } }, }; @@ -1119,7 +1176,8 @@ static int st_lsm6dsx_read_oneshot(struct st_lsm6dsx_sensor *sensor, if (err < 0) return err; - st_lsm6dsx_sensor_set_enable(sensor, false); + if (!hw->enable_event) + st_lsm6dsx_sensor_set_enable(sensor, false); *val = (s16)le16_to_cpu(data); @@ -1192,6 +1250,123 @@ static int st_lsm6dsx_write_raw(struct iio_dev *iio_dev, return err; } +int st_lsm6dsx_event_setup(struct st_lsm6dsx_hw *hw, int state) +{ + int err; + u8 enable = 0; + + if (!hw->settings->int1_func_addr) + return -ENOTSUPP; + + enable = state ? hw->settings->event_settings.enable_reg.mask : 0; + + err = regmap_update_bits(hw->regmap, + hw->settings->event_settings.enable_reg.addr, + hw->settings->event_settings.enable_reg.mask, + enable); + if (err < 0) + return err; + + enable = state ? hw->irq_routing.mask : 0; + + /* Enable wakeup interrupt */ + return regmap_update_bits(hw->regmap, hw->irq_routing.addr, + hw->irq_routing.mask, + enable); +} + +static int st_lsm6dsx_read_event(struct iio_dev *iio_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 st_lsm6dsx_sensor *sensor = iio_priv(iio_dev); + struct st_lsm6dsx_hw *hw = sensor->hw; + + if (type != IIO_EV_TYPE_THRESH) + return -EINVAL; + + *val2 = 0; + *val = hw->event_threshold; + + return IIO_VAL_INT; +} + +static int st_lsm6dsx_write_event(struct iio_dev *iio_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 st_lsm6dsx_sensor *sensor = iio_priv(iio_dev); + struct st_lsm6dsx_hw *hw = sensor->hw; + int err; + + if (type != IIO_EV_TYPE_THRESH) + return -EINVAL; + + if (val < 0 || val > 31) + return -EINVAL; + + err = regmap_update_bits(hw->regmap, + hw->settings->event_settings.wakeup_reg.addr, + hw->settings->event_settings.wakeup_reg.mask, + val); + if (err) + return -EINVAL; + + hw->event_threshold = val; + + return 0; +} + +static int st_lsm6dsx_read_event_config(struct iio_dev *iio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir) +{ + struct st_lsm6dsx_sensor *sensor = iio_priv(iio_dev); + struct st_lsm6dsx_hw *hw = sensor->hw; + + if (type != IIO_EV_TYPE_THRESH) + return -EINVAL; + + return hw->enable_event; +} + +static int st_lsm6dsx_write_event_config(struct iio_dev *iio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, + int state) +{ + struct st_lsm6dsx_sensor *sensor = iio_priv(iio_dev); + struct st_lsm6dsx_hw *hw = sensor->hw; + int err = 0; + + if (type != IIO_EV_TYPE_THRESH) + return -EINVAL; + + /* do not enable events if they are already enabled */ + if (state && hw->enable_event) + return 0; + + err = st_lsm6dsx_event_setup(hw, state); + if (err < 0) + return err; + + err = st_lsm6dsx_sensor_set_enable(sensor, state); + if (err < 0) + return err; + + hw->enable_event = state; + + return 0; +} + int st_lsm6dsx_set_watermark(struct iio_dev *iio_dev, unsigned int val) { struct st_lsm6dsx_sensor *sensor = iio_priv(iio_dev); @@ -1276,6 +1451,10 @@ static const struct iio_info st_lsm6dsx_acc_info = { .attrs = &st_lsm6dsx_acc_attribute_group, .read_raw = st_lsm6dsx_read_raw, .write_raw = st_lsm6dsx_write_raw, + .read_event_value = st_lsm6dsx_read_event, + .write_event_value = st_lsm6dsx_write_event, + .read_event_config = st_lsm6dsx_read_event_config, + .write_event_config = st_lsm6dsx_write_event_config, .hwfifo_set_watermark = st_lsm6dsx_set_watermark, }; @@ -1321,9 +1500,13 @@ static int st_lsm6dsx_get_drdy_reg(struct st_lsm6dsx_hw *hw, u8 *drdy_reg) switch (drdy_pin) { case 1: *drdy_reg = hw->settings->int1_addr; + hw->irq_routing.addr = hw->settings->int1_func_addr; + hw->irq_routing.mask = hw->settings->int_func_mask; break; case 2: *drdy_reg = hw->settings->int2_addr; + hw->irq_routing.addr = hw->settings->int2_func_addr; + hw->irq_routing.mask = hw->settings->int_func_mask; break; default: dev_err(hw->dev, "unsupported data ready pin\n");
Add event channels that controls the creation of motion events. Tested on ISM330DLC Signed-off-by: Sean Nyekjaer <sean@geanix.com> --- Changes since v4: * Added check for event support * Added registers for more devices that support this event Changes since v5: * Moved wakeup_src masks to PATCH 5/6 Changes since v6: * None Changes since v7: * None Changes since v8: * None Changes since v10: * enable_event changed to a u8 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h | 41 ++++ drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 191 ++++++++++++++++++- 2 files changed, 228 insertions(+), 4 deletions(-)