Based on device tree setting, set the internal analog gain. Signed-off-by: Gwendal Grignou <gwendal@xxxxxxxxxxxx> --- New in v5. drivers/iio/proximity/sx9324.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/iio/proximity/sx9324.c b/drivers/iio/proximity/sx9324.c index 6806262eb1c92..851f2ff0ae7e8 100644 --- a/drivers/iio/proximity/sx9324.c +++ b/drivers/iio/proximity/sx9324.c @@ -79,6 +79,7 @@ #define SX9324_REG_AFE_CTRL8_RESFILTIN_4KOHM 0x02 #define SX9324_REG_AFE_CTRL8_RESFILTIN_MASK GENMASK(3, 0) #define SX9324_REG_AFE_CTRL9 0x2d +#define SX9324_REG_AFE_CTRL9_AGAIN_MASK GENMASK(3, 0) #define SX9324_REG_AFE_CTRL9_AGAIN_1 0x08 #define SX9324_REG_PROX_CTRL0 0x30 @@ -925,6 +926,27 @@ sx9324_get_default_reg(struct device *dev, int idx, raw / 2000); break; + case SX9324_REG_AFE_CTRL9: + ret = device_property_read_u32(dev, + "semtech,input-analog-gain", &raw); + if (ret) + break; + /* + * The analog gain has the following setting: + * +---------+----------------+----------------+ + * | dt(raw) | physical value | register value | + * +---------+----------------+----------------+ + * | 0 | x1.247 | 6 | + * | 1 | x1 | 8 | + * | 2 | x0.768 | 11 | + * | 3 | x0.552 | 15 | + * +---------+----------------+----------------+ + */ + reg_def->def &= ~SX9324_REG_AFE_CTRL9_AGAIN_MASK; + reg_def->def |= FIELD_PREP(SX9324_REG_AFE_CTRL9_AGAIN_MASK, + 6 + raw * (raw + 3) / 2); + break; + case SX9324_REG_ADV_CTRL5: ret = device_property_read_u32(dev, "semtech,startup-sensor", &start); -- 2.36.0.464.gb9c8b46e94-goog
