This is a patch for adding gpio control about enable/disable of buck.
Signed-off-by: James Ban <james.ban.opensou...@diasemi.com>
---
This patch is relative to linux-next repository tag next-20150115.
Changes in V2:
- gpio name from gpio to gpios.
- add ena_gpio_initialized.
.../devicetree/bindings/regulator/da9211.txt | 7 ++++++-
drivers/regulator/da9211-regulator.c | 16 ++++++++++++++++
include/linux/regulator/da9211.h | 1 +
3 files changed, 23 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/regulator/da9211.txt
b/Documentation/devicetree/bindings/regulator/da9211.txt
index 240019a..a3b58e8 100644
--- a/Documentation/devicetree/bindings/regulator/da9211.txt
+++ b/Documentation/devicetree/bindings/regulator/da9211.txt
@@ -11,6 +11,7 @@ Required properties:
BUCKA and BUCKB.
Optional properties:
+- buck-enable-platform-gpios: platform gpio for control of BUCKA/BUCKB.
- Any optional property defined in regulator.txt
Example 1) DA9211
@@ -27,6 +28,7 @@ Example 1) DA9211
regulator-max-microvolt = <1570000>;
regulator-min-microamp = <2000000>;
regulator-max-microamp = <5000000>;
+ buck-enable-platform-gpios = <&gpio 27 0>;
};
BUCKB {
regulator-name = "VBUCKB";
@@ -34,11 +36,12 @@ Example 1) DA9211
regulator-max-microvolt = <1570000>;
regulator-min-microamp = <2000000>;
regulator-max-microamp = <5000000>;
+ buck-enable-platform-gpios = <&gpio 17 0>;
};
};
};
-Example 2) DA92113
+Example 2) DA9213
pmic: da9213@68 {
compatible = "dlg,da9213";
reg = <0x68>;
@@ -51,6 +54,7 @@ Example 2) DA92113
regulator-max-microvolt = <1570000>;
regulator-min-microamp = <3000000>;
regulator-max-microamp = <6000000>;
+ buck-enable-platform-gpios = <&gpio 27 0>;
};
BUCKB {
regulator-name = "VBUCKB";
@@ -58,6 +62,7 @@ Example 2) DA92113
regulator-max-microvolt = <1570000>;
regulator-min-microamp = <3000000>;
regulator-max-microamp = <6000000>;
+ buck-enable-platform-gpios = <&gpio 17 0>;
};
};
};
diff --git a/drivers/regulator/da9211-regulator.c
b/drivers/regulator/da9211-regulator.c
index c78d210..84ab88f 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 +278,10 @@ static struct da9211_pdata *da9211_parse_regulators_dt(
pdata->init_data[n] = da9211_matches[i].init_data;
+ pdata->gpio_ren[n] =
+ of_get_named_gpio(da9211_matches[i].of_node,
+ "buck-enable-platform-gpios", 0);
+
n++;
}
@@ -366,6 +371,17 @@ static int da9211_regulator_init(struct da9211 *chip)
config.regmap = chip->regmap;
config.of_node = chip->dev->of_node;
+ 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;
+ dev_warn(chip->dev,
+ "gpio control : GPIO[%d] not valid, ignoring\n",
+ chip->pdata->gpio_ren[i]);
+ }
+
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 5479394..530b5ea 100644
--- a/include/linux/regulator/da9211.h
+++ b/include/linux/regulator/da9211.h
@@ -32,6 +32,7 @@ struct da9211_pdata {
* 2 : 2 phase 2 buck
*/
int num_buck;
+ int gpio_ren[DA9211_MAX_REGULATORS];
struct regulator_init_data *init_data[DA9211_MAX_REGULATORS];
};
#endif
--
end-of-patch for regulator: da9211: Add gpio control for enable/disable of buck
V2
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