diff options
Diffstat (limited to 'drivers/iio/proximity')
| -rw-r--r-- | drivers/iio/proximity/sx9324.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/iio/proximity/sx9324.c b/drivers/iio/proximity/sx9324.c index 926a0da5915c..7f367f63e362 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 @@ -941,6 +942,27 @@ 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); |