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Subject[PATCH 2/2] iio: sx9324: Add setting for CS idle mode
Date
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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