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SubjectRe: [PATCH 2/2] iio: sx9324: Add setting for CS idle mode
Reviewed-by: Gwendal Grignou <gwendal@chromium.org>

On Mon, May 2, 2022 at 5:42 PM Stephen Boyd <swboyd@chromium.org> wrote:
>
> Based on device tree setting, set the CS idle mode.
>
> Cc: Gwendal Grignou <gwendal@chromium.org>
> Signed-off-by: Stephen Boyd <swboyd@chromium.org>
> ---
> drivers/iio/proximity/sx9324.c | 16 ++++++++++++++++
> 1 file changed, 16 insertions(+)
>
> diff --git a/drivers/iio/proximity/sx9324.c b/drivers/iio/proximity/sx9324.c
> index 7f367f63e362..79683f0d4e9a 100644
> --- a/drivers/iio/proximity/sx9324.c
> +++ b/drivers/iio/proximity/sx9324.c
> @@ -57,6 +57,11 @@
> GENMASK(SX9324_REG_AFE_CTRL0_RINT_SHIFT + 1, \
> SX9324_REG_AFE_CTRL0_RINT_SHIFT)
> #define SX9324_REG_AFE_CTRL0_RINT_LOWEST 0x00
> +#define SX9324_REG_AFE_CTRL0_CSIDLE_SHIFT 4
> +#define SX9324_REG_AFE_CTRL0_CSIDLE_MASK \
> + GENMASK(SX9324_REG_AFE_CTRL0_CSIDLE_SHIFT + 1, \
> + SX9324_REG_AFE_CTRL0_CSIDLE_SHIFT)
> +#define SX9324_REG_AFE_CTRL0_RINT_LOWEST 0x00
> #define SX9324_REG_AFE_CTRL1 0x21
> #define SX9324_REG_AFE_CTRL2 0x22
> #define SX9324_REG_AFE_CTRL3 0x23
> @@ -872,6 +877,8 @@ sx9324_get_default_reg(struct device *dev, int idx,
> {
> static const char * const sx9324_rints[] = { "lowest", "low", "high",
> "highest" };
> + static const char * const sx9324_csidle[] = { "hz", "hz", "gnd",
> + "vdd" };
> #define SX9324_PIN_DEF "semtech,ph0-pin"
> #define SX9324_RESOLUTION_DEF "semtech,ph01-resolution"
> #define SX9324_PROXRAW_DEF "semtech,ph01-proxraw-strength"
> @@ -901,6 +908,15 @@ sx9324_get_default_reg(struct device *dev, int idx,
> reg_def->def = raw;
> break;
> case SX9324_REG_AFE_CTRL0:
> + ret = device_property_read_string(dev,
> + "semtech,cs-idle-sleep", &res);
> + if (!ret)
> + ret = match_string(sx9324_csidle, ARRAY_SIZE(sx9324_csidle), res);
> + if (ret >= 0) {
> + reg_def->def &= ~SX9324_REG_AFE_CTRL0_CSIDLE_MASK;
> + reg_def->def |= ret << SX9324_REG_AFE_CTRL0_CSIDLE_SHIFT;
> + }
> +
> ret = device_property_read_string(dev,
> "semtech,int-comp-resistor", &res);
> if (ret)
> --
> https://chromeos.dev
>

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