[PATCH v2 3/8] iio: dac: ds4424: add DS4402/DS4404 device IDs

Oleksij Rempel
2026-01-27T06:09:43Z

Add I2C/OF IDs for DS4402 and DS4404 and set the correct channel count.
Follow-up changes add per-variant scaling based on external Rfs.

Signed-off-by: David Jander <david@protonic.nl>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
---
changes v2:
- No changes.
---
drivers/iio/dac/ds4424.c | 12 ++++++++++++
1 file changed, 12 insertions(+)

diff --git a/drivers/iio/dac/ds4424.c b/drivers/iio/dac/ds4424.c
index a8198ba4f98a..072b7e6672cf 100644
--- a/drivers/iio/dac/ds4424.c
+++ b/drivers/iio/dac/ds4424.c
@@ -48,6 +48,8 @@ union ds4424_raw_data {
};

enum ds4424_device_ids {
+ ID_DS4402,
+ ID_DS4404,
ID_DS4422,
ID_DS4424,
};
@@ -248,6 +250,12 @@ static int ds4424_probe(struct i2c_client *client)
goto fail;

switch (id->driver_data) {
+ case ID_DS4402:
+ indio_dev->num_channels = DS4422_MAX_DAC_CHANNELS;
+ break;
+ case ID_DS4404:
+ indio_dev->num_channels = DS4424_MAX_DAC_CHANNELS;
+ break;
case ID_DS4422:
indio_dev->num_channels = DS4422_MAX_DAC_CHANNELS;
break;
@@ -289,6 +297,8 @@ static void ds4424_remove(struct i2c_client *client)
}

static const struct i2c_device_id ds4424_id[] = {
+ { "ds4402", ID_DS4402 },
+ { "ds4404", ID_DS4404 },
{ "ds4422", ID_DS4422 },
{ "ds4424", ID_DS4424 },
{ }
@@ -297,6 +307,8 @@ static const struct i2c_device_id ds4424_id[] = {
MODULE_DEVICE_TABLE(i2c, ds4424_id);

static const struct of_device_id ds4424_of_match[] = {
+ { .compatible = "maxim,ds4402" },
+ { .compatible = "maxim,ds4404" },
{ .compatible = "maxim,ds4422" },
{ .compatible = "maxim,ds4424" },
{ }
--
2.47.3