diff options
| author | Gwendal Grignou <gwendal@chromium.org> | 2022-04-29 15:01:38 -0700 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-06-14 11:53:10 +0100 |
| commit | d2fb946019d59b1b5913e3fd12a4c57d84a7a7ea (patch) | |
| tree | c067f421c142bb8fb909ace3b17fe486215356fa /drivers/iio/proximity | |
| parent | 057e45db96fc98d758915fe09aa52b6faaa17cc0 (diff) | |
iio: sx9324: Add precharge internal resistance setting
Add ability to set the precharge internal resistance from the device
tree.
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20220429220144.1476049-5-gwendal@chromium.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/proximity')
| -rw-r--r-- | drivers/iio/proximity/sx9324.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/iio/proximity/sx9324.c b/drivers/iio/proximity/sx9324.c index ed9fb17119e7..28e26723aac9 100644 --- a/drivers/iio/proximity/sx9324.c +++ b/drivers/iio/proximity/sx9324.c @@ -72,6 +72,7 @@ #define SX9324_REG_AFE_CTRL8 0x2c #define SX9324_REG_AFE_CTRL8_RESERVED 0x10 #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_1 0x08 @@ -909,6 +910,18 @@ sx9324_get_default_reg(struct device *dev, int idx, reg_def->def |= FIELD_PREP(SX9324_REG_AFE_CTRL4_RESOLUTION_MASK, raw); break; + case SX9324_REG_AFE_CTRL8: + ret = device_property_read_u32(dev, + "semtech,input-precharge-resistor-ohms", + &raw); + if (ret) + break; + + reg_def->def &= ~SX9324_REG_AFE_CTRL8_RESFILTIN_MASK; + reg_def->def |= FIELD_PREP(SX9324_REG_AFE_CTRL8_RESFILTIN_MASK, + raw / 2000); + break; + case SX9324_REG_ADV_CTRL5: ret = device_property_read_u32(dev, "semtech,startup-sensor", &start); |