diff options
| author |   Lorenzo Bianconi <lorenzo@kernel.org> | 2019-12-14 17:52:55 +0100 |
|---|---|---|
| committer |   Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2019-12-29 15:20:06 +0000 |
| commit | 007f2ebbac2ac7f0f6d80ca5afd3f51c5a083838 (patch) | |
| tree | eb6f083124506232bbe9be8d7f1345994c56e8bc /drivers/iio | |
| parent | iio: imu: st_lsm6dsx: export max num of slave devices in st_lsm6dsx_shub_settings (diff) | |
| download | linux-dev-007f2ebbac2ac7f0f6d80ca5afd3f51c5a083838.tar.xz linux-dev-007f2ebbac2ac7f0f6d80ca5afd3f51c5a083838.zip | |
iio: imu: st_lsm6dsx: check if master_enable is located in primary page
Check if the master enable register is located in the primary or in the
secondary memory page. This is a preliminary patch to support i2c master
controller on lsm6dsm devices
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h | 6 | ||||
| -rw-r--r-- | drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 2 | ||||
| -rw-r--r-- | drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c | 11 |
3 files changed, 14 insertions, 5 deletions
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h index 140e4c6971f3..bd1c77d16147 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h @@ -184,7 +184,11 @@ struct st_lsm6dsx_hw_ts_settings { */ struct st_lsm6dsx_shub_settings { struct st_lsm6dsx_reg page_mux; - struct st_lsm6dsx_reg master_en; + struct { + bool sec_page; + u8 addr; + u8 mask; + } master_en; struct st_lsm6dsx_reg pullup_en; struct st_lsm6dsx_reg aux_sens; struct st_lsm6dsx_reg wr_once; diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c index 91dc9796add7..b8cfea977968 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c @@ -868,6 +868,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = { .mask = BIT(6), }, .master_en = { + .sec_page = true, .addr = 0x14, .mask = BIT(2), }, @@ -1243,6 +1244,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = { .mask = BIT(6), }, .master_en = { + .sec_page = true, .addr = 0x14, .mask = BIT(2), }, diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c index 5684e663d0aa..767482e61a1e 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c @@ -185,15 +185,18 @@ static int st_lsm6dsx_shub_master_enable(struct st_lsm6dsx_sensor *sensor, mutex_lock(&hw->page_lock); hub_settings = &hw->settings->shub_settings; - err = st_lsm6dsx_set_page(hw, true); - if (err < 0) - goto out; + if (hub_settings->master_en.sec_page) { + err = st_lsm6dsx_set_page(hw, true); + if (err < 0) + goto out; + } data = ST_LSM6DSX_SHIFT_VAL(enable, hub_settings->master_en.mask); err = regmap_update_bits(hw->regmap, hub_settings->master_en.addr, hub_settings->master_en.mask, data); - st_lsm6dsx_set_page(hw, false); + if (hub_settings->master_en.sec_page) + st_lsm6dsx_set_page(hw, false); out: mutex_unlock(&hw->page_lock); |