* [U-Boot] [PATCH v2] power: regulator: Add support for gpio regulators
@ 2016-09-15 11:34 Keerthy
2016-09-19 0:59 ` Simon Glass
0 siblings, 1 reply; 6+ messages in thread
From: Keerthy @ 2016-09-15 11:34 UTC (permalink / raw)
To: u-boot
Add support for gpio regulators. As of now this driver caters
to gpio regulators with one gpio. Supports setting voltage values to gpio
regulators and retrieving the values.
Signed-off-by: Keerthy <j-keerthy@ti.com>
---
Changes in v2:
* Added states and voltages as part of plat data to have
a generic state to voltage mapping removing any assumptions.
drivers/power/regulator/Kconfig | 8 ++
drivers/power/regulator/Makefile | 1 +
drivers/power/regulator/gpio-regulator.c | 137 +++++++++++++++++++++++++++++++
include/power/regulator.h | 1 +
4 files changed, 147 insertions(+)
create mode 100644 drivers/power/regulator/gpio-regulator.c
diff --git a/drivers/power/regulator/Kconfig b/drivers/power/regulator/Kconfig
index 2510474..4776011 100644
--- a/drivers/power/regulator/Kconfig
+++ b/drivers/power/regulator/Kconfig
@@ -58,6 +58,14 @@ config DM_REGULATOR_FIXED
features for fixed value regulators. The driver implements get/set api
for enable and get only for voltage value.
+config DM_REGULATOR_GPIO
+ bool "Enable Driver Model for GPIO REGULATOR"
+ depends on DM_REGULATOR
+ ---help---
+ This config enables implementation of driver-model regulator uclass
+ features for gpio regulators. The driver implements get/set for
+ voltage value.
+
config REGULATOR_RK808
bool "Enable driver for RK808 regulators"
depends on DM_REGULATOR && PMIC_RK808
diff --git a/drivers/power/regulator/Makefile b/drivers/power/regulator/Makefile
index 2093048..2d350cb 100644
--- a/drivers/power/regulator/Makefile
+++ b/drivers/power/regulator/Makefile
@@ -10,6 +10,7 @@ obj-$(CONFIG_REGULATOR_ACT8846) += act8846.o
obj-$(CONFIG_DM_REGULATOR_MAX77686) += max77686.o
obj-$(CONFIG_DM_REGULATOR_PFUZE100) += pfuze100.o
obj-$(CONFIG_$(SPL_)DM_REGULATOR_FIXED) += fixed.o
+obj-$(CONFIG_$(SPL_)DM_REGULATOR_GPIO) += gpio-regulator.o
obj-$(CONFIG_REGULATOR_RK808) += rk808.o
obj-$(CONFIG_REGULATOR_S5M8767) += s5m8767.o
obj-$(CONFIG_DM_REGULATOR_SANDBOX) += sandbox.o
diff --git a/drivers/power/regulator/gpio-regulator.c b/drivers/power/regulator/gpio-regulator.c
new file mode 100644
index 0000000..0a60a9c
--- /dev/null
+++ b/drivers/power/regulator/gpio-regulator.c
@@ -0,0 +1,137 @@
+/*
+ * (C) Copyright 2016 Texas Instruments Incorporated, <www.ti.com>
+ * Keerthy <j-keerthy@ti.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <fdtdec.h>
+#include <errno.h>
+#include <dm.h>
+#include <i2c.h>
+#include <asm/gpio.h>
+#include <power/pmic.h>
+#include <power/regulator.h>
+
+#define GPIO_REGULATOR_MAX_STATES 2
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct gpio_regulator_platdata {
+ struct gpio_desc gpio; /* GPIO for regulator voltage control */
+ int states[GPIO_REGULATOR_MAX_STATES];
+ int voltages[GPIO_REGULATOR_MAX_STATES];
+};
+
+static int gpio_regulator_ofdata_to_platdata(struct udevice *dev)
+{
+ struct dm_regulator_uclass_platdata *uc_pdata;
+ struct gpio_regulator_platdata *dev_pdata;
+ struct gpio_desc *gpio;
+ const void *blob = gd->fdt_blob;
+ int node = dev->of_offset;
+ int ret, count, i, j;
+ u32 states_array[8];
+
+ dev_pdata = dev_get_platdata(dev);
+ uc_pdata = dev_get_uclass_platdata(dev);
+ if (!uc_pdata)
+ return -ENXIO;
+
+ /* Set type to gpio */
+ uc_pdata->type = REGULATOR_TYPE_GPIO;
+
+ /*
+ * Get gpio regulator gpio desc
+ * Assuming one GPIO per regulator.
+ * Can be extended later to multiple GPIOs
+ * per gpio-regulator. As of now no instance with multiple
+ * gpios is presnt
+ */
+ gpio = &dev_pdata->gpio;
+ ret = gpio_request_by_name(dev, "gpios", 0, gpio, GPIOD_IS_OUT);
+ if (ret)
+ debug("regulator gpio - not found! Error: %d", ret);
+
+ count = fdtdec_get_int_array_count(blob, node, "states",
+ states_array, 8);
+
+ if (!count)
+ return -EINVAL;
+
+ for (i = 0, j = 0; i < count; i += 2) {
+ dev_pdata->voltages[j] = states_array[i];
+ dev_pdata->states[j] = states_array[i + 1];
+ j++;
+ }
+
+ return 0;
+}
+
+static int gpio_regulator_get_value(struct udevice *dev)
+{
+ struct dm_regulator_uclass_platdata *uc_pdata;
+ struct gpio_regulator_platdata *dev_pdata = dev_get_platdata(dev);
+ int enable;
+
+ if (!dev_pdata->gpio.dev)
+ return -ENOSYS;
+
+ uc_pdata = dev_get_uclass_platdata(dev);
+ if (uc_pdata->min_uV > uc_pdata->max_uV) {
+ debug("Invalid constraints for: %s\n", uc_pdata->name);
+ return -EINVAL;
+ }
+
+ enable = dm_gpio_get_value(&dev_pdata->gpio);
+ if (enable == dev_pdata->states[0])
+ return dev_pdata->voltages[0];
+ else
+ return dev_pdata->voltages[1];
+}
+
+static int gpio_regulator_set_value(struct udevice *dev, int uV)
+{
+ struct gpio_regulator_platdata *dev_pdata = dev_get_platdata(dev);
+ int ret;
+ bool enable;
+
+ if (!dev_pdata->gpio.dev)
+ return -ENOSYS;
+
+ if (uV == dev_pdata->voltages[0])
+ enable = dev_pdata->states[0];
+ else if (uV == dev_pdata->voltages[1])
+ enable = dev_pdata->states[1];
+ else
+ return -EINVAL;
+
+ ret = dm_gpio_set_value(&dev_pdata->gpio, enable);
+ if (ret) {
+ error("Can't set regulator : %s gpio to: %d\n", dev->name,
+ enable);
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct dm_regulator_ops gpio_regulator_ops = {
+ .get_value = gpio_regulator_get_value,
+ .set_value = gpio_regulator_set_value,
+};
+
+static const struct udevice_id gpio_regulator_ids[] = {
+ { .compatible = "regulator-gpio" },
+ { },
+};
+
+U_BOOT_DRIVER(gpio_regulator) = {
+ .name = "gpio regulator",
+ .id = UCLASS_REGULATOR,
+ .ops = &gpio_regulator_ops,
+ .of_match = gpio_regulator_ids,
+ .ofdata_to_platdata = gpio_regulator_ofdata_to_platdata,
+ .platdata_auto_alloc_size = sizeof(struct gpio_regulator_platdata),
+};
diff --git a/include/power/regulator.h b/include/power/regulator.h
index 8ae6b14..5d327e6 100644
--- a/include/power/regulator.h
+++ b/include/power/regulator.h
@@ -108,6 +108,7 @@ enum regulator_type {
REGULATOR_TYPE_BUCK,
REGULATOR_TYPE_DVS,
REGULATOR_TYPE_FIXED,
+ REGULATOR_TYPE_GPIO,
REGULATOR_TYPE_OTHER,
};
--
1.9.1
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [U-Boot] [PATCH v2] power: regulator: Add support for gpio regulators
2016-09-15 11:34 [U-Boot] [PATCH v2] power: regulator: Add support for gpio regulators Keerthy
@ 2016-09-19 0:59 ` Simon Glass
2016-10-05 11:58 ` Keerthy
0 siblings, 1 reply; 6+ messages in thread
From: Simon Glass @ 2016-09-19 0:59 UTC (permalink / raw)
To: u-boot
On 15 September 2016 at 05:34, Keerthy <j-keerthy@ti.com> wrote:
> Add support for gpio regulators. As of now this driver caters
> to gpio regulators with one gpio. Supports setting voltage values to gpio
> regulators and retrieving the values.
>
> Signed-off-by: Keerthy <j-keerthy@ti.com>
> ---
>
> Changes in v2:
>
> * Added states and voltages as part of plat data to have
> a generic state to voltage mapping removing any assumptions.
>
> drivers/power/regulator/Kconfig | 8 ++
> drivers/power/regulator/Makefile | 1 +
> drivers/power/regulator/gpio-regulator.c | 137 +++++++++++++++++++++++++++++++
> include/power/regulator.h | 1 +
> 4 files changed, 147 insertions(+)
> create mode 100644 drivers/power/regulator/gpio-regulator.c
Reviewed-by: Simon Glass <sjg@chromium.org>
^ permalink raw reply [flat|nested] 6+ messages in thread
* [U-Boot] [PATCH v2] power: regulator: Add support for gpio regulators
2016-09-19 0:59 ` Simon Glass
@ 2016-10-05 11:58 ` Keerthy
2016-10-05 16:50 ` Simon Glass
0 siblings, 1 reply; 6+ messages in thread
From: Keerthy @ 2016-10-05 11:58 UTC (permalink / raw)
To: u-boot
On Monday 19 September 2016 06:29 AM, Simon Glass wrote:
> On 15 September 2016 at 05:34, Keerthy <j-keerthy@ti.com> wrote:
>> Add support for gpio regulators. As of now this driver caters
>> to gpio regulators with one gpio. Supports setting voltage values to gpio
>> regulators and retrieving the values.
>>
>> Signed-off-by: Keerthy <j-keerthy@ti.com>
>> ---
>>
>> Changes in v2:
>>
>> * Added states and voltages as part of plat data to have
>> a generic state to voltage mapping removing any assumptions.
>>
>> drivers/power/regulator/Kconfig | 8 ++
>> drivers/power/regulator/Makefile | 1 +
>> drivers/power/regulator/gpio-regulator.c | 137 +++++++++++++++++++++++++++++++
>> include/power/regulator.h | 1 +
>> 4 files changed, 147 insertions(+)
>> create mode 100644 drivers/power/regulator/gpio-regulator.c
>
> Reviewed-by: Simon Glass <sjg@chromium.org>
Simon,
Wanted to know who is pulling this patch.
- Keerthy
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* [U-Boot] [PATCH v2] power: regulator: Add support for gpio regulators
2016-10-05 11:58 ` Keerthy
@ 2016-10-05 16:50 ` Simon Glass
2016-10-06 14:28 ` Przemyslaw Marczak
0 siblings, 1 reply; 6+ messages in thread
From: Simon Glass @ 2016-10-05 16:50 UTC (permalink / raw)
To: u-boot
Hi Keerthy,
On 5 October 2016 at 05:58, Keerthy <a0393675@ti.com> wrote:
>
>
> On Monday 19 September 2016 06:29 AM, Simon Glass wrote:
>>
>> On 15 September 2016 at 05:34, Keerthy <j-keerthy@ti.com> wrote:
>>>
>>> Add support for gpio regulators. As of now this driver caters
>>> to gpio regulators with one gpio. Supports setting voltage values to gpio
>>> regulators and retrieving the values.
>>>
>>> Signed-off-by: Keerthy <j-keerthy@ti.com>
>>> ---
>>>
>>> Changes in v2:
>>>
>>> * Added states and voltages as part of plat data to have
>>> a generic state to voltage mapping removing any assumptions.
>>>
>>> drivers/power/regulator/Kconfig | 8 ++
>>> drivers/power/regulator/Makefile | 1 +
>>> drivers/power/regulator/gpio-regulator.c | 137
>>> +++++++++++++++++++++++++++++++
>>> include/power/regulator.h | 1 +
>>> 4 files changed, 147 insertions(+)
>>> create mode 100644 drivers/power/regulator/gpio-regulator.c
>>
>>
>> Reviewed-by: Simon Glass <sjg@chromium.org>
>
>
> Simon,
>
> Wanted to know who is pulling this patch.
Looking in patchwork it is assigned to Przemyslaw.
Regards,
Simon
^ permalink raw reply [flat|nested] 6+ messages in thread
* [U-Boot] [PATCH v2] power: regulator: Add support for gpio regulators
2016-10-05 16:50 ` Simon Glass
@ 2016-10-06 14:28 ` Przemyslaw Marczak
2016-10-11 0:29 ` Simon Glass
0 siblings, 1 reply; 6+ messages in thread
From: Przemyslaw Marczak @ 2016-10-06 14:28 UTC (permalink / raw)
To: u-boot
Hello,
On 10/05/2016 06:50 PM, Simon Glass wrote:
> Hi Keerthy,
>
> On 5 October 2016 at 05:58, Keerthy <a0393675@ti.com> wrote:
>>
>> On Monday 19 September 2016 06:29 AM, Simon Glass wrote:
>>> On 15 September 2016 at 05:34, Keerthy <j-keerthy@ti.com> wrote:
>>>> Add support for gpio regulators. As of now this driver caters
>>>> to gpio regulators with one gpio. Supports setting voltage values to gpio
>>>> regulators and retrieving the values.
>>>>
>>>> Signed-off-by: Keerthy <j-keerthy@ti.com>
>>>> ---
>>>>
>>>> Changes in v2:
>>>>
>>>> * Added states and voltages as part of plat data to have
>>>> a generic state to voltage mapping removing any assumptions.
>>>>
>>>> drivers/power/regulator/Kconfig | 8 ++
>>>> drivers/power/regulator/Makefile | 1 +
>>>> drivers/power/regulator/gpio-regulator.c | 137
>>>> +++++++++++++++++++++++++++++++
>>>> include/power/regulator.h | 1 +
>>>> 4 files changed, 147 insertions(+)
>>>> create mode 100644 drivers/power/regulator/gpio-regulator.c
>>>
>>> Reviewed-by: Simon Glass <sjg@chromium.org>
>>
>> Simon,
>>
>> Wanted to know who is pulling this patch.
> Looking in patchwork it is assigned to Przemyslaw.
>
> Regards,
> Simon
>
>
>
I'm sorry for the silence, I have very limited time for open source at
present, and now it's hard for me to watch the list.
Simon, I will assign it to you in patchwork, since you have already done
the review.
Best regards,
--
Przemyslaw Marczak
Samsung R&D Institute Poland
Samsung Electronics
p.marczak at samsung.com
^ permalink raw reply [flat|nested] 6+ messages in thread
* [U-Boot] [PATCH v2] power: regulator: Add support for gpio regulators
2016-10-06 14:28 ` Przemyslaw Marczak
@ 2016-10-11 0:29 ` Simon Glass
0 siblings, 0 replies; 6+ messages in thread
From: Simon Glass @ 2016-10-11 0:29 UTC (permalink / raw)
To: u-boot
On 6 October 2016 at 08:28, Przemyslaw Marczak <p.marczak@samsung.com> wrote:
> Hello,
>
>
> On 10/05/2016 06:50 PM, Simon Glass wrote:
>>
>> Hi Keerthy,
>>
>> On 5 October 2016 at 05:58, Keerthy <a0393675@ti.com> wrote:
>>>
>>>
>>> On Monday 19 September 2016 06:29 AM, Simon Glass wrote:
>>>>
>>>> On 15 September 2016 at 05:34, Keerthy <j-keerthy@ti.com> wrote:
>>>>>
>>>>> Add support for gpio regulators. As of now this driver caters
>>>>> to gpio regulators with one gpio. Supports setting voltage values to
>>>>> gpio
>>>>> regulators and retrieving the values.
>>>>>
>>>>> Signed-off-by: Keerthy <j-keerthy@ti.com>
>>>>> ---
>>>>>
>>>>> Changes in v2:
>>>>>
>>>>> * Added states and voltages as part of plat data to have
>>>>> a generic state to voltage mapping removing any assumptions.
>>>>>
>>>>> drivers/power/regulator/Kconfig | 8 ++
>>>>> drivers/power/regulator/Makefile | 1 +
>>>>> drivers/power/regulator/gpio-regulator.c | 137
>>>>> +++++++++++++++++++++++++++++++
>>>>> include/power/regulator.h | 1 +
>>>>> 4 files changed, 147 insertions(+)
>>>>> create mode 100644 drivers/power/regulator/gpio-regulator.c
>>>>
>>>>
>>>> Reviewed-by: Simon Glass <sjg@chromium.org>
>>>
>>>
>>> Simon,
>>>
>>> Wanted to know who is pulling this patch.
>>
>> Looking in patchwork it is assigned to Przemyslaw.
>>
>> Regards,
>> Simon
>>
>>
>>
>
> I'm sorry for the silence, I have very limited time for open source at
> present, and now it's hard for me to watch the list.
> Simon, I will assign it to you in patchwork, since you have already done the
> review.
Applied to u-boot-dm, thanks!
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2016-10-11 0:29 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-09-15 11:34 [U-Boot] [PATCH v2] power: regulator: Add support for gpio regulators Keerthy
2016-09-19 0:59 ` Simon Glass
2016-10-05 11:58 ` Keerthy
2016-10-05 16:50 ` Simon Glass
2016-10-06 14:28 ` Przemyslaw Marczak
2016-10-11 0:29 ` Simon Glass
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