[PATCH 2/4] media: i2c: dw9719: Add DW9800K support

Griffin Kroah-Hartman
2025-10-02T10:15:47Z

The DW9800K is a similar part to the DW9719. The method for operation is
the same as the DW9719, but the register set is different. Add support
for this part to the existing dw9719 driver.

Tested on the Fairphone 5 smartphone.

Signed-off-by: Griffin Kroah-Hartman <griffin.kroah@fairphone.com>
---
drivers/media/i2c/dw9719.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)

diff --git a/drivers/media/i2c/dw9719.c b/drivers/media/i2c/dw9719.c
index 3627e78b8b6668933c4ecd92231465ce4105ff0c..172479f2c9f63f6b2a1f6eccf8184142edb383b9 100644
--- a/drivers/media/i2c/dw9719.c
+++ b/drivers/media/i2c/dw9719.c
@@ -68,6 +68,9 @@
#define DW9761_VCM_PRELOAD CCI_REG8(8)
#define DW9761_DEFAULT_VCM_PRELOAD 0x73

+#define DW9800K_DEFAULT_SAC 1
+#define DW9800K_MODE_SAC_SHIFT 6
+#define DW9800K_DEFAULT_VCM_FREQ 0x10

#define to_dw9719_device(x) container_of(x, struct dw9719_device, sd)

@@ -75,6 +78,7 @@ enum dw9719_model {
DW9718S,
DW9719,
DW9761,
+ DW9800K,
};

struct dw9719_device {
@@ -137,6 +141,12 @@ static int dw9719_power_up(struct dw9719_device *dw9719, bool detect)
goto props;
}

+ if (dw9719->model == DW9800K) {
+ dw9719->sac_mode = DW9800K_DEFAULT_SAC;
+ dw9719->vcm_freq = DW9800K_DEFAULT_VCM_FREQ;
+ goto props;
+ }
+
ret = cci_read(dw9719->regmap, DW9719_INFO, &val, NULL);
if (ret < 0)
return ret;
@@ -177,6 +187,12 @@ static int dw9719_power_up(struct dw9719_device *dw9719, bool detect)
}

switch (dw9719->model) {
+ case DW9800K:
+ cci_write(dw9719->regmap, DW9719_CONTROL, DW9719_ENABLE_RINGING, &ret);
+ cci_write(dw9719->regmap, DW9719_MODE,
+ dw9719->sac_mode << DW9800K_MODE_SAC_SHIFT, &ret);
+ cci_write(dw9719->regmap, DW9719_VCM_FREQ, dw9719->vcm_freq, &ret);
+ break;
case DW9718S:
/* Datasheet says [OCP/UVLO] should be disabled below 2.5V */
dw9719->sac_mode &= DW9718S_CONTROL_SAC_MASK;
@@ -426,6 +442,7 @@ static const struct of_device_id dw9719_of_table[] = {
{ .compatible = "dongwoon,dw9718s", .data = (const void *)DW9718S },
{ .compatible = "dongwoon,dw9719", .data = (const void *)DW9719 },
{ .compatible = "dongwoon,dw9761", .data = (const void *)DW9761 },
+ { .compatible = "dongwoon,dw9800k", .data = (const void *)DW9800K },
{ }
};
MODULE_DEVICE_TABLE(of, dw9719_of_table);

--
2.43.0