From: David Jander <david@protonic.nl>

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.

Co-developed-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: David Jander <david@protonic.nl>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
---
changes v3:
- Reset author to David Jander and added Co-developed-by tag for
  Oleksij Rempel to clarify roles
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 94803885d735..31dcf6632b58 100644
--- a/drivers/iio/dac/ds4424.c
+++ b/drivers/iio/dac/ds4424.c
@@ -38,6 +38,14 @@ struct ds4424_chip_info {
 	u8 num_channels;
 };
 
+static const struct ds4424_chip_info ds4402_info = {
+	.num_channels = DS4422_MAX_DAC_CHANNELS,
+};
+
+static const struct ds4424_chip_info ds4404_info = {
+	.num_channels = DS4424_MAX_DAC_CHANNELS,
+};
+
 static const struct ds4424_chip_info ds4422_info = {
 	.num_channels = DS4422_MAX_DAC_CHANNELS,
 };
@@ -282,6 +290,8 @@ static void ds4424_remove(struct i2c_client *client)
 }
 
 static const struct i2c_device_id ds4424_id[] = {
+	{ "ds4402", (kernel_ulong_t)&ds4402_info },
+	{ "ds4404", (kernel_ulong_t)&ds4404_info },
 	{ "ds4422", (kernel_ulong_t)&ds4422_info },
 	{ "ds4424", (kernel_ulong_t)&ds4424_info },
 	{ }
@@ -290,6 +300,8 @@ 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", .data = &ds4402_info },
+	{ .compatible = "maxim,ds4404", .data = &ds4404_info },
 	{ .compatible = "maxim,ds4422", .data = &ds4422_info },
 	{ .compatible = "maxim,ds4424", .data = &ds4424_info },
 	{ }
-- 
2.47.3