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regulator: Allow enabling GPIO regulator

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Drivers need to be able to enable regulators that may be implemented as
GPIO regulators. Example: fsl_esdhc enables the vqmmc supply which is
commonly implemented as a GPIO regulator in order to switch between I/O
voltage levels.

Signed-off-by: Sven Schwermer <sven@svenschwermer.de>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
This commit is contained in:
Sven Schwermer 2019-06-24 13:03:34 +02:00 committed by Tom Rini
parent 2f7a5f2682
commit aa2067a869
2 changed files with 19 additions and 1 deletions
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2
drivers/power/regulator/Kconfig
View File

@ -120,6 +120,7 @@ config SPL_DM_REGULATOR_FIXED
config DM_REGULATOR_GPIO config DM_REGULATOR_GPIO
bool "Enable Driver Model for GPIO REGULATOR" bool "Enable Driver Model for GPIO REGULATOR"
depends on DM_REGULATOR && DM_GPIO depends on DM_REGULATOR && DM_GPIO
select DM_REGULATOR_COMMON
---help--- ---help---
This config enables implementation of driver-model regulator uclass This config enables implementation of driver-model regulator uclass
features for gpio regulators. The driver implements get/set for features for gpio regulators. The driver implements get/set for
@ -128,6 +129,7 @@ config DM_REGULATOR_GPIO
config SPL_DM_REGULATOR_GPIO config SPL_DM_REGULATOR_GPIO
bool "Enable Driver Model for GPIO REGULATOR in SPL" bool "Enable Driver Model for GPIO REGULATOR in SPL"
depends on DM_REGULATOR_GPIO && SPL_GPIO_SUPPORT depends on DM_REGULATOR_GPIO && SPL_GPIO_SUPPORT
select SPL_DM_REGULATOR_COMMON
---help--- ---help---
This config enables implementation of driver-model regulator uclass This config enables implementation of driver-model regulator uclass
features for gpio regulators in SPL. features for gpio regulators in SPL.

18
drivers/power/regulator/gpio-regulator.c
View File

@ -4,6 +4,7 @@
* Keerthy <j-keerthy@ti.com> * Keerthy <j-keerthy@ti.com>
*/ */
#include "regulator_common.h"
#include <common.h> #include <common.h>
#include <fdtdec.h> #include <fdtdec.h>
#include <errno.h> #include <errno.h>
@ -18,6 +19,7 @@
DECLARE_GLOBAL_DATA_PTR; DECLARE_GLOBAL_DATA_PTR;
struct gpio_regulator_platdata { struct gpio_regulator_platdata {
struct regulator_common_platdata common;
struct gpio_desc gpio; /* GPIO for regulator voltage control */ struct gpio_desc gpio; /* GPIO for regulator voltage control */
int states[GPIO_REGULATOR_MAX_STATES]; int states[GPIO_REGULATOR_MAX_STATES];
int voltages[GPIO_REGULATOR_MAX_STATES]; int voltages[GPIO_REGULATOR_MAX_STATES];
@ -65,7 +67,7 @@ static int gpio_regulator_ofdata_to_platdata(struct udevice *dev)
j++; j++;
} }
return 0; return regulator_common_ofdata_to_platdata(dev, &dev_pdata->common, "enable-gpios");
} }
static int gpio_regulator_get_value(struct udevice *dev) static int gpio_regulator_get_value(struct udevice *dev)
@ -116,9 +118,23 @@ static int gpio_regulator_set_value(struct udevice *dev, int uV)
return 0; return 0;
} }
static int gpio_regulator_get_enable(struct udevice *dev)
{
struct gpio_regulator_platdata *dev_pdata = dev_get_platdata(dev);
return regulator_common_get_enable(dev, &dev_pdata->common);
}
static int gpio_regulator_set_enable(struct udevice *dev, bool enable)
{
struct gpio_regulator_platdata *dev_pdata = dev_get_platdata(dev);
return regulator_common_set_enable(dev, &dev_pdata->common, enable);
}
static const struct dm_regulator_ops gpio_regulator_ops = { static const struct dm_regulator_ops gpio_regulator_ops = {
.get_value = gpio_regulator_get_value, .get_value = gpio_regulator_get_value,
.set_value = gpio_regulator_set_value, .set_value = gpio_regulator_set_value,
.get_enable = gpio_regulator_get_enable,
.set_enable = gpio_regulator_set_enable,
}; };
static const struct udevice_id gpio_regulator_ids[] = { static const struct udevice_id gpio_regulator_ids[] = {