mfd: sec-core: Add support for the Samsung s2dos05

S2DOS05 is a panel/touchscreen PMIC, often found in
Samsung phones. We define regulator sub-device for which driver will
be added in subsequent patch. The device also has ADC for power and
current measurements.

Signed-off-by: Dzmitry Sankouski <dsankouski@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20240617-starqltechn_integration_upstream-v5-2-ea1109029ba5@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>

drivers/mfd/sec-core.c

@@ -34,6 +34,10 @@ static const struct mfd_cell s5m8767_devs[] = {
 	},
 };
 
+static const struct mfd_cell s2dos05_devs[] = {
+	{ .name = "s2dos05-regulator", },
+};
+
 static const struct mfd_cell s2mps11_devs[] = {
 	{ .name = "s2mps11-regulator", },
 	{ .name = "s2mps14-rtc", },
@@ -83,6 +87,9 @@ static const struct of_device_id sec_dt_match[] = {
 	{
 		.compatible = "samsung,s5m8767-pmic",
 		.data = (void *)S5M8767X,
+	}, {
+		.compatible = "samsung,s2dos05",
+		.data = (void *)S2DOS05,
 	}, {
 		.compatible = "samsung,s2mps11-pmic",
 		.data = (void *)S2MPS11X,
@@ -339,6 +346,10 @@ static int sec_pmic_probe(struct i2c_client *i2c)
 		sec_devs = s5m8767_devs;
 		num_sec_devs = ARRAY_SIZE(s5m8767_devs);
 		break;
+	case S2DOS05:
+		sec_devs = s2dos05_devs;
+		num_sec_devs = ARRAY_SIZE(s2dos05_devs);
+		break;
 	case S2MPA01:
 		sec_devs = s2mpa01_devs;
 		num_sec_devs = ARRAY_SIZE(s2mpa01_devs);

include/linux/mfd/samsung/core.h

@@ -37,6 +37,7 @@ struct gpio_desc;
 
 enum sec_device_type {
 	S5M8767X,
+	S2DOS05,
 	S2MPA01,
 	S2MPS11X,
 	S2MPS13X,