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iio: imu: st_lsm6dsx: check if master_enable is located in primary page

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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>
This commit is contained in:
Lorenzo Bianconi 2019-12-14 17:52:55 +01:00 committed by Jonathan Cameron
parent ee978bb86d
commit 007f2ebbac
3 changed files with 14 additions and 5 deletions
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6
drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
View file

@ -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;

2
drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
View file

@ -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),
},

11
drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c
View file

@ -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);