diff options
| author | Lothar Rubusch <l.rubusch@gmail.com> | 2025-07-02 23:08:17 +0000 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2025-07-13 15:36:27 +0100 |
| commit | 554396d4b0be5cdec4654fd3456c08886aa8da3e (patch) | |
| tree | 16031f736f50c9c575d3a5abe43ffd09109f7f5c | |
| parent | e3fc1cadf226eacdf44565b3f3455dfc7d8785f5 (diff) | |
iio: accel: adxl313: implement power-save on inactivity
Configure the link bit to associate activity and inactivity sensing,
allowing the sensor to reflect its internal power-saving state.
Additionally, enable the auto-sleep bit to transition the sensor into
auto-sleep mode during periods of inactivity, as outlined in the
datasheet.
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Lothar Rubusch <l.rubusch@gmail.com>
Link: https://patch.msgid.link/20250702230819.19353-7-l.rubusch@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| -rw-r--r-- | drivers/iio/accel/adxl313.h | 3 | ||||
| -rw-r--r-- | drivers/iio/accel/adxl313_core.c | 22 |
2 files changed, 25 insertions, 0 deletions
diff --git a/drivers/iio/accel/adxl313.h b/drivers/iio/accel/adxl313.h index d7e8cb44855b..75ef54b60f75 100644 --- a/drivers/iio/accel/adxl313.h +++ b/drivers/iio/accel/adxl313.h @@ -41,6 +41,9 @@ #define ADXL313_RATE_BASE 6 #define ADXL313_POWER_CTL_MSK BIT(3) +#define ADXL313_POWER_CTL_INACT_MSK GENMASK(5, 4) +#define ADXL313_POWER_CTL_LINK BIT(5) +#define ADXL313_POWER_CTL_AUTO_SLEEP BIT(4) #define ADXL313_RANGE_MSK GENMASK(1, 0) #define ADXL313_RANGE_MAX 3 diff --git a/drivers/iio/accel/adxl313_core.c b/drivers/iio/accel/adxl313_core.c index 5b6faa83be02..fe2a7d77fdfb 100644 --- a/drivers/iio/accel/adxl313_core.c +++ b/drivers/iio/accel/adxl313_core.c @@ -396,6 +396,23 @@ static int adxl313_is_act_inact_en(struct adxl313_data *data, return adxl313_act_int_reg[type] & regval; } +static int adxl313_set_act_inact_linkbit(struct adxl313_data *data, bool en) +{ + int act_en, inact_en; + + act_en = adxl313_is_act_inact_en(data, ADXL313_ACTIVITY); + if (act_en < 0) + return act_en; + + inact_en = adxl313_is_act_inact_en(data, ADXL313_INACTIVITY); + if (inact_en < 0) + return inact_en; + + return regmap_assign_bits(data->regmap, ADXL313_REG_POWER_CTL, + ADXL313_POWER_CTL_AUTO_SLEEP | ADXL313_POWER_CTL_LINK, + en && act_en && inact_en); +} + static int adxl313_set_act_inact_en(struct adxl313_data *data, enum adxl313_activity_type type, bool cmd_en) @@ -455,6 +472,11 @@ static int adxl313_set_act_inact_en(struct adxl313_data *data, if (ret) return ret; + /* Set link-bit and auto-sleep only when ACT and INACT are enabled */ + ret = adxl313_set_act_inact_linkbit(data, cmd_en); + if (ret) + return ret; + return adxl313_set_measure_en(data, true); } |