regulator: da9211: Add gpio control for enable/disable of buck
This is a patch for adding gpio control about enable/disable of buck.
Signed-off-by: James Ban <james.ban.opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/Documentation/devicetree/bindings/regulator/da9211.txt b/Documentation/devicetree/bindings/regulator/da9211.txt
index 240019a..eb61890 100644
--- a/Documentation/devicetree/bindings/regulator/da9211.txt
+++ b/Documentation/devicetree/bindings/regulator/da9211.txt
@@ -11,6 +11,7 @@
BUCKA and BUCKB.
Optional properties:
+- enable-gpios: platform gpio for control of BUCKA/BUCKB.
- Any optional property defined in regulator.txt
Example 1) DA9211
@@ -27,6 +28,7 @@
regulator-max-microvolt = <1570000>;
regulator-min-microamp = <2000000>;
regulator-max-microamp = <5000000>;
+ enable-gpios = <&gpio 27 0>;
};
BUCKB {
regulator-name = "VBUCKB";
@@ -34,11 +36,12 @@
regulator-max-microvolt = <1570000>;
regulator-min-microamp = <2000000>;
regulator-max-microamp = <5000000>;
+ enable-gpios = <&gpio 17 0>;
};
};
};
-Example 2) DA92113
+Example 2) DA9213
pmic: da9213@68 {
compatible = "dlg,da9213";
reg = <0x68>;
@@ -51,6 +54,7 @@
regulator-max-microvolt = <1570000>;
regulator-min-microamp = <3000000>;
regulator-max-microamp = <6000000>;
+ enable-gpios = <&gpio 27 0>;
};
BUCKB {
regulator-name = "VBUCKB";
@@ -58,6 +62,7 @@
regulator-max-microvolt = <1570000>;
regulator-min-microamp = <3000000>;
regulator-max-microamp = <6000000>;
+ enable-gpios = <&gpio 17 0>;
};
};
};
diff --git a/drivers/regulator/da9211-regulator.c b/drivers/regulator/da9211-regulator.c
index 8e6957c..0134341 100644
--- a/drivers/regulator/da9211-regulator.c
+++ b/drivers/regulator/da9211-regulator.c
@@ -24,6 +24,7 @@
#include <linux/regmap.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
+#include <linux/of_gpio.h>
#include <linux/regulator/of_regulator.h>
#include <linux/regulator/da9211.h>
#include "da9211-regulator.h"
@@ -277,6 +278,9 @@
pdata->init_data[n] = da9211_matches[i].init_data;
pdata->reg_node[n] = da9211_matches[i].of_node;
+ pdata->gpio_ren[n] =
+ of_get_named_gpio(da9211_matches[i].of_node,
+ "enable-gpios", 0);
n++;
}
@@ -366,6 +370,14 @@
config.regmap = chip->regmap;
config.of_node = chip->pdata->reg_node[i];
+ if (gpio_is_valid(chip->pdata->gpio_ren[i])) {
+ config.ena_gpio = chip->pdata->gpio_ren[i];
+ config.ena_gpio_initialized = true;
+ } else {
+ config.ena_gpio = -EINVAL;
+ config.ena_gpio_initialized = false;
+ }
+
chip->rdev[i] = devm_regulator_register(chip->dev,
&da9211_regulators[i], &config);
if (IS_ERR(chip->rdev[i])) {
diff --git a/include/linux/regulator/da9211.h b/include/linux/regulator/da9211.h
index d1d9d384..5dd65ac 100644
--- a/include/linux/regulator/da9211.h
+++ b/include/linux/regulator/da9211.h
@@ -32,6 +32,7 @@
* 2 : 2 phase 2 buck
*/
int num_buck;
+ int gpio_ren[DA9211_MAX_REGULATORS];
struct device_node *reg_node[DA9211_MAX_REGULATORS];
struct regulator_init_data *init_data[DA9211_MAX_REGULATORS];
};
