* [PATCH 02/18 v2] regulator: gpio: Get enable GPIO using GPIO descriptor
2018-04-22 23:07 [PATCH 01/18 v2] regulator: fixed: Convert to use GPIO descriptor only Linus Walleij
@ 2018-04-22 23:07 ` Linus Walleij
2018-04-22 23:07 ` [PATCH 03/18 v2] regulator: arizona-ldo1: Look up a descriptor and pass to the core Linus Walleij
` (15 subsequent siblings)
16 siblings, 0 replies; 43+ messages in thread
From: Linus Walleij @ 2018-04-22 23:07 UTC (permalink / raw)
To: Liam Girdwood, Mark Brown; +Cc: linux-kernel, Linus Walleij, Philipp Zabel
We augment the GPIO regulator to get the *enable* regulator
GPIO line (not the other lines) using a descriptor rather than
a global number.
We then pass this into the regulator core which has been
prepared to hande enable descriptors in a separate patch.
Switch over the two boardfiles using this facility and clean
up so we only pass descriptors around.
Cc: Philipp Zabel <philipp.zabel@gmail.com> # HX4700/Magician maintainer
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- Rebase the patch on the other changes.
---
arch/arm/mach-pxa/hx4700.c | 12 +++++++++++-
arch/arm/mach-pxa/magician.c | 11 ++++++++++-
drivers/regulator/gpio-regulator.c | 23 +++++++++++------------
include/linux/regulator/gpio-regulator.h | 3 ---
4 files changed, 32 insertions(+), 17 deletions(-)
diff --git a/arch/arm/mach-pxa/hx4700.c b/arch/arm/mach-pxa/hx4700.c
index e2e7f247a645..6717a10180eb 100644
--- a/arch/arm/mach-pxa/hx4700.c
+++ b/arch/arm/mach-pxa/hx4700.c
@@ -20,6 +20,7 @@
#include <linux/delay.h>
#include <linux/fb.h>
#include <linux/gpio.h>
+#include <linux/gpio/machine.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/input/navpoint.h>
@@ -711,7 +712,6 @@ static struct gpio_regulator_state bq24022_states[] = {
static struct gpio_regulator_config bq24022_info = {
.supply_name = "bq24022",
- .enable_gpio = GPIO72_HX4700_BQ24022_nCHARGE_EN,
.enable_high = 0,
.enabled_at_boot = 0,
@@ -733,6 +733,15 @@ static struct platform_device bq24022 = {
},
};
+static struct gpiod_lookup_table bq24022_gpiod_table = {
+ .dev_id = "gpio-regulator",
+ .table = {
+ GPIO_LOOKUP("gpio-pxa", GPIO72_HX4700_BQ24022_nCHARGE_EN,
+ "enable", GPIO_ACTIVE_HIGH),
+ { },
+ },
+};
+
/*
* StrataFlash
*/
@@ -875,6 +884,7 @@ static void __init hx4700_init(void)
pxa_set_btuart_info(NULL);
pxa_set_stuart_info(NULL);
+ gpiod_add_lookup_table(&bq24022_gpiod_table);
platform_add_devices(devices, ARRAY_SIZE(devices));
pwm_add_table(hx4700_pwm_lookup, ARRAY_SIZE(hx4700_pwm_lookup));
diff --git a/arch/arm/mach-pxa/magician.c b/arch/arm/mach-pxa/magician.c
index 14c0f80bc9e7..9a5bda3ea194 100644
--- a/arch/arm/mach-pxa/magician.c
+++ b/arch/arm/mach-pxa/magician.c
@@ -657,7 +657,6 @@ static struct gpio_regulator_state bq24022_states[] = {
static struct gpio_regulator_config bq24022_info = {
.supply_name = "bq24022",
- .enable_gpio = GPIO30_MAGICIAN_BQ24022_nCHARGE_EN,
.enable_high = 0,
.enabled_at_boot = 1,
@@ -679,6 +678,15 @@ static struct platform_device bq24022 = {
},
};
+static struct gpiod_lookup_table bq24022_gpiod_table = {
+ .dev_id = "gpio-regulator",
+ .table = {
+ GPIO_LOOKUP("gpio-pxa", GPIO30_MAGICIAN_BQ24022_nCHARGE_EN,
+ "enable", GPIO_ACTIVE_HIGH),
+ { },
+ },
+};
+
/*
* fixed regulator for ads7846
*/
@@ -1007,6 +1015,7 @@ static void __init magician_init(void)
regulator_register_always_on(0, "power", pwm_backlight_supply,
ARRAY_SIZE(pwm_backlight_supply), 5000000);
+ gpiod_add_lookup_table(&bq24022_gpiod_table);
platform_add_devices(ARRAY_AND_SIZE(devices));
}
diff --git a/drivers/regulator/gpio-regulator.c b/drivers/regulator/gpio-regulator.c
index a86b8997bb54..9d6094c4d71c 100644
--- a/drivers/regulator/gpio-regulator.c
+++ b/drivers/regulator/gpio-regulator.c
@@ -31,6 +31,7 @@
#include <linux/regulator/of_regulator.h>
#include <linux/regulator/gpio-regulator.h>
#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/slab.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
@@ -161,10 +162,6 @@ of_get_gpio_regulator_config(struct device *dev, struct device_node *np,
of_property_read_u32(np, "startup-delay-us", &config->startup_delay);
- config->enable_gpio = of_get_named_gpio(np, "enable-gpio", 0);
- if (config->enable_gpio < 0 && config->enable_gpio != -ENOENT)
- return ERR_PTR(config->enable_gpio);
-
/* Fetch GPIOs. - optional property*/
ret = of_gpio_count(np);
if ((ret < 0) && (ret != -ENOENT))
@@ -255,6 +252,7 @@ static int gpio_regulator_probe(struct platform_device *pdev)
struct device_node *np = pdev->dev.of_node;
struct gpio_regulator_data *drvdata;
struct regulator_config cfg = { };
+ enum gpiod_flags gflags;
int ptr, ret, state;
drvdata = devm_kzalloc(&pdev->dev, sizeof(struct gpio_regulator_data),
@@ -340,21 +338,22 @@ static int gpio_regulator_probe(struct platform_device *pdev)
cfg.driver_data = drvdata;
cfg.of_node = np;
- if (gpio_is_valid(config->enable_gpio)) {
- cfg.ena_gpio = config->enable_gpio;
- cfg.ena_gpio_initialized = true;
- }
cfg.ena_gpio_invert = !config->enable_high;
if (config->enabled_at_boot) {
if (config->enable_high)
- cfg.ena_gpio_flags |= GPIOF_OUT_INIT_HIGH;
+ gflags = GPIOD_OUT_HIGH;
else
- cfg.ena_gpio_flags |= GPIOF_OUT_INIT_LOW;
+ gflags = GPIOD_OUT_LOW;
} else {
if (config->enable_high)
- cfg.ena_gpio_flags |= GPIOF_OUT_INIT_LOW;
+ gflags = GPIOD_OUT_LOW;
else
- cfg.ena_gpio_flags |= GPIOF_OUT_INIT_HIGH;
+ gflags = GPIOD_OUT_HIGH;
+ }
+ cfg.ena_gpiod = devm_gpiod_get_optional(&pdev->dev, "enable", gflags);
+ if (IS_ERR(cfg.ena_gpiod)) {
+ ret = PTR_ERR(cfg.ena_gpiod);
+ goto err_stategpio;
}
drvdata->dev = regulator_register(&drvdata->desc, &cfg);
diff --git a/include/linux/regulator/gpio-regulator.h b/include/linux/regulator/gpio-regulator.h
index 19fbd267406d..536cab86f2d5 100644
--- a/include/linux/regulator/gpio-regulator.h
+++ b/include/linux/regulator/gpio-regulator.h
@@ -44,8 +44,6 @@ struct gpio_regulator_state {
/**
* struct gpio_regulator_config - config structure
* @supply_name: Name of the regulator supply
- * @enable_gpio: GPIO to use for enable control
- * set to -EINVAL if not used
* @enable_high: Polarity of enable GPIO
* 1 = Active high, 0 = Active low
* @enabled_at_boot: Whether regulator has been enabled at
@@ -69,7 +67,6 @@ struct gpio_regulator_state {
struct gpio_regulator_config {
const char *supply_name;
- int enable_gpio;
unsigned enable_high:1;
unsigned enabled_at_boot:1;
unsigned startup_delay;
--
2.14.3
^ permalink raw reply related [flat|nested] 43+ messages in thread
* [PATCH 03/18 v2] regulator: arizona-ldo1: Look up a descriptor and pass to the core
2018-04-22 23:07 [PATCH 01/18 v2] regulator: fixed: Convert to use GPIO descriptor only Linus Walleij
2018-04-22 23:07 ` [PATCH 02/18 v2] regulator: gpio: Get enable GPIO using GPIO descriptor Linus Walleij
@ 2018-04-22 23:07 ` Linus Walleij
2018-04-23 8:48 ` Charles Keepax
2018-04-22 23:07 ` [PATCH 04/18 v2] regulator: max8973: Pass descriptor instead of GPIO number Linus Walleij
` (14 subsequent siblings)
16 siblings, 1 reply; 43+ messages in thread
From: Linus Walleij @ 2018-04-22 23:07 UTC (permalink / raw)
To: Liam Girdwood, Mark Brown
Cc: linux-kernel, Linus Walleij, patches, Richard Fitzgerald, Charles Keepax
Instead of passing a global GPIO number, pass a descriptor looked
up with the standard devm_gpiod_get_optional() call.
We have augmented the GPIO core to look up the regulator special
GPIO "wlf,ldoena" in commit 6a537d48461d
"gpio: of: Support regulator nonstandard GPIO properties".
Cc: patches@opensource.cirrus.com
Cc: Richard Fitzgerald <rf@opensource.cirrus.com>
Cc: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- Rebase the patch on the other changes.
- Make sure to update some s3c64xx platform data properly.
---
arch/arm/mach-s3c64xx/mach-crag6410-module.c | 28 ++++++++++++++++++++++------
drivers/regulator/arizona-ldo1.c | 19 ++++++-------------
include/linux/regulator/arizona-ldo1.h | 3 ---
3 files changed, 28 insertions(+), 22 deletions(-)
diff --git a/arch/arm/mach-s3c64xx/mach-crag6410-module.c b/arch/arm/mach-s3c64xx/mach-crag6410-module.c
index f00988705408..5da041edd3b4 100644
--- a/arch/arm/mach-s3c64xx/mach-crag6410-module.c
+++ b/arch/arm/mach-s3c64xx/mach-crag6410-module.c
@@ -9,6 +9,7 @@
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/spi/spi.h>
+#include <linux/gpio/machine.h>
#include <linux/mfd/wm831x/irq.h>
#include <linux/mfd/wm831x/gpio.h>
@@ -206,9 +207,6 @@ static const struct i2c_board_info wm1277_devs[] = {
};
static struct arizona_pdata wm5102_reva_pdata = {
- .ldo1 = {
- .ldoena = S3C64XX_GPN(7),
- },
.gpio_base = CODEC_GPIO_BASE,
.irq_flags = IRQF_TRIGGER_HIGH,
.micd_pol_gpio = CODEC_GPIO_BASE + 4,
@@ -237,10 +235,16 @@ static struct spi_board_info wm5102_reva_spi_devs[] = {
},
};
-static struct arizona_pdata wm5102_pdata = {
- .ldo1 = {
- .ldoena = S3C64XX_GPN(7),
+static struct gpiod_lookup_table wm5102_reva_gpiod_table = {
+ .dev_id = "spi0.1", /* SPI device name */
+ .table = {
+ GPIO_LOOKUP("GPION", 7,
+ "wlf,ldo1ena", GPIO_ACTIVE_HIGH),
+ { },
},
+};
+
+static struct arizona_pdata wm5102_pdata = {
.gpio_base = CODEC_GPIO_BASE,
.irq_flags = IRQF_TRIGGER_HIGH,
.micd_pol_gpio = CODEC_GPIO_BASE + 2,
@@ -264,6 +268,15 @@ static struct spi_board_info wm5102_spi_devs[] = {
},
};
+static struct gpiod_lookup_table wm5102_gpiod_table = {
+ .dev_id = "spi0.1", /* SPI device name */
+ .table = {
+ GPIO_LOOKUP("GPION", 7,
+ "wlf,ldo1ena", GPIO_ACTIVE_HIGH),
+ { },
+ },
+};
+
static struct spi_board_info wm5110_spi_devs[] = {
[0] = {
.modalias = "wm5110",
@@ -366,6 +379,9 @@ static int wlf_gf_module_probe(struct i2c_client *i2c,
rev == gf_mods[i].rev))
break;
+ gpiod_add_lookup_table(&wm5102_reva_gpiod_table);
+ gpiod_add_lookup_table(&wm5102_gpiod_table);
+
if (i < ARRAY_SIZE(gf_mods)) {
dev_info(&i2c->dev, "%s revision %d\n",
gf_mods[i].name, rev + 1);
diff --git a/drivers/regulator/arizona-ldo1.c b/drivers/regulator/arizona-ldo1.c
index 96fddfff5dc4..f6d6a4ad9e8a 100644
--- a/drivers/regulator/arizona-ldo1.c
+++ b/drivers/regulator/arizona-ldo1.c
@@ -17,12 +17,11 @@
#include <linux/bitops.h>
#include <linux/err.h>
#include <linux/of.h>
-#include <linux/of_gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/of_regulator.h>
-#include <linux/gpio.h>
#include <linux/slab.h>
#include <linux/regulator/arizona-ldo1.h>
@@ -198,16 +197,6 @@ static int arizona_ldo1_of_get_pdata(struct arizona_ldo1_pdata *pdata,
struct device_node *init_node, *dcvdd_node;
struct regulator_init_data *init_data;
- pdata->ldoena = of_get_named_gpio(np, "wlf,ldoena", 0);
- if (pdata->ldoena < 0) {
- dev_warn(config->dev,
- "LDOENA GPIO property missing/malformed: %d\n",
- pdata->ldoena);
- pdata->ldoena = 0;
- } else {
- config->ena_gpio_initialized = true;
- }
-
init_node = of_get_child_by_name(np, "ldo1");
dcvdd_node = of_parse_phandle(np, "DCVDD-supply", 0);
@@ -264,7 +253,11 @@ static int arizona_ldo1_common_init(struct platform_device *pdev,
}
}
- config.ena_gpio = pdata->ldoena;
+ /* We assume that high output = regulator off */
+ config.ena_gpiod = devm_gpiod_get_optional(&pdev->dev, "wlf,ldoena",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(config.ena_gpiod))
+ return PTR_ERR(config.ena_gpiod);
if (pdata->init_data)
config.init_data = pdata->init_data;
diff --git a/include/linux/regulator/arizona-ldo1.h b/include/linux/regulator/arizona-ldo1.h
index c685f1277c63..fe74ab9990e6 100644
--- a/include/linux/regulator/arizona-ldo1.h
+++ b/include/linux/regulator/arizona-ldo1.h
@@ -14,9 +14,6 @@
struct regulator_init_data;
struct arizona_ldo1_pdata {
- /** GPIO controlling LDOENA, if any */
- int ldoena;
-
/** Regulator configuration for LDO1 */
const struct regulator_init_data *init_data;
};
--
2.14.3
^ permalink raw reply related [flat|nested] 43+ messages in thread
* Re: [PATCH 03/18 v2] regulator: arizona-ldo1: Look up a descriptor and pass to the core
2018-04-22 23:07 ` [PATCH 03/18 v2] regulator: arizona-ldo1: Look up a descriptor and pass to the core Linus Walleij
@ 2018-04-23 8:48 ` Charles Keepax
0 siblings, 0 replies; 43+ messages in thread
From: Charles Keepax @ 2018-04-23 8:48 UTC (permalink / raw)
To: Linus Walleij
Cc: Liam Girdwood, Mark Brown, linux-kernel, patches, Richard Fitzgerald
On Mon, Apr 23, 2018 at 01:07:27AM +0200, Linus Walleij wrote:
> Instead of passing a global GPIO number, pass a descriptor looked
> up with the standard devm_gpiod_get_optional() call.
>
> We have augmented the GPIO core to look up the regulator special
> GPIO "wlf,ldoena" in commit 6a537d48461d
> "gpio: of: Support regulator nonstandard GPIO properties".
>
> Cc: patches@opensource.cirrus.com
> Cc: Richard Fitzgerald <rf@opensource.cirrus.com>
> Cc: Charles Keepax <ckeepax@opensource.cirrus.com>
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
> ---
> static struct arizona_pdata wm5102_reva_pdata = {
> - .ldo1 = {
> - .ldoena = S3C64XX_GPN(7),
> - },
> .gpio_base = CODEC_GPIO_BASE,
> .irq_flags = IRQF_TRIGGER_HIGH,
> .micd_pol_gpio = CODEC_GPIO_BASE + 4,
> @@ -237,10 +235,16 @@ static struct spi_board_info wm5102_reva_spi_devs[] = {
> },
> };
>
> -static struct arizona_pdata wm5102_pdata = {
> - .ldo1 = {
> - .ldoena = S3C64XX_GPN(7),
> +static struct gpiod_lookup_table wm5102_reva_gpiod_table = {
> + .dev_id = "spi0.1", /* SPI device name */
> + .table = {
> + GPIO_LOOKUP("GPION", 7,
> + "wlf,ldo1ena", GPIO_ACTIVE_HIGH),
This should be wlf,ldoena.
> + { },
> },
> +};
> +
> +static struct arizona_pdata wm5102_pdata = {
> .gpio_base = CODEC_GPIO_BASE,
> .irq_flags = IRQF_TRIGGER_HIGH,
> .micd_pol_gpio = CODEC_GPIO_BASE + 2,
> @@ -264,6 +268,15 @@ static struct spi_board_info wm5102_spi_devs[] = {
> },
> };
>
> +static struct gpiod_lookup_table wm5102_gpiod_table = {
> + .dev_id = "spi0.1", /* SPI device name */
> + .table = {
> + GPIO_LOOKUP("GPION", 7,
> + "wlf,ldo1ena", GPIO_ACTIVE_HIGH),
> + { },
> + },
> +};
> +
Might as well share the same lookup table between the revs since
it is identical.
Thanks,
Charles
^ permalink raw reply [flat|nested] 43+ messages in thread
* [PATCH 04/18 v2] regulator: max8973: Pass descriptor instead of GPIO number
2018-04-22 23:07 [PATCH 01/18 v2] regulator: fixed: Convert to use GPIO descriptor only Linus Walleij
2018-04-22 23:07 ` [PATCH 02/18 v2] regulator: gpio: Get enable GPIO using GPIO descriptor Linus Walleij
2018-04-22 23:07 ` [PATCH 03/18 v2] regulator: arizona-ldo1: Look up a descriptor and pass to the core Linus Walleij
@ 2018-04-22 23:07 ` Linus Walleij
2018-04-22 23:07 ` [PATCH 05/18 v2] regulator: max77686: " Linus Walleij
` (13 subsequent siblings)
16 siblings, 0 replies; 43+ messages in thread
From: Linus Walleij @ 2018-04-22 23:07 UTC (permalink / raw)
To: Liam Girdwood, Mark Brown
Cc: linux-kernel, Linus Walleij, Mikko Perttunen, Laxman Dewangan
Instead of passing a global GPIO number, pass a descriptor looked
up with the standard devm_gpiod_get_optional() call.
Cc: Mikko Perttunen <mperttunen@nvidia.com>
Cc: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- Rebase the patch on the other changes.
---
drivers/regulator/max8973-regulator.c | 54 +++++++++++++++++++----------------
1 file changed, 29 insertions(+), 25 deletions(-)
diff --git a/drivers/regulator/max8973-regulator.c b/drivers/regulator/max8973-regulator.c
index e0c747aa9f85..7cd493ec6315 100644
--- a/drivers/regulator/max8973-regulator.c
+++ b/drivers/regulator/max8973-regulator.c
@@ -34,6 +34,7 @@
#include <linux/regulator/max8973-regulator.h>
#include <linux/regulator/of_regulator.h>
#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/of_gpio.h>
#include <linux/i2c.h>
#include <linux/slab.h>
@@ -114,7 +115,6 @@ struct max8973_chip {
struct regulator_desc desc;
struct regmap *regmap;
bool enable_external_control;
- int enable_gpio;
int dvs_gpio;
int lru_index[MAX8973_MAX_VOUT_REG];
int curr_vout_val[MAX8973_MAX_VOUT_REG];
@@ -567,7 +567,6 @@ static struct max8973_regulator_platform_data *max8973_parse_dt(
pdata->enable_ext_control = of_property_read_bool(np,
"maxim,externally-enable");
- pdata->enable_gpio = of_get_named_gpio(np, "maxim,enable-gpio", 0);
pdata->dvs_gpio = of_get_named_gpio(np, "maxim,dvs-gpio", 0);
ret = of_property_read_u32(np, "maxim,dvs-default-state", &pval);
@@ -633,6 +632,8 @@ static int max8973_probe(struct i2c_client *client,
struct max8973_chip *max;
bool pdata_from_dt = false;
unsigned int chip_id;
+ struct gpio_desc *gpiod;
+ enum gpiod_flags gflags;
int ret;
pdata = dev_get_platdata(&client->dev);
@@ -647,8 +648,7 @@ static int max8973_probe(struct i2c_client *client,
return -EIO;
}
- if ((pdata->dvs_gpio == -EPROBE_DEFER) ||
- (pdata->enable_gpio == -EPROBE_DEFER))
+ if (pdata->dvs_gpio == -EPROBE_DEFER)
return -EPROBE_DEFER;
max = devm_kzalloc(&client->dev, sizeof(*max), GFP_KERNEL);
@@ -696,15 +696,11 @@ static int max8973_probe(struct i2c_client *client,
max->desc.n_voltages = MAX8973_BUCK_N_VOLTAGE;
max->dvs_gpio = (pdata->dvs_gpio) ? pdata->dvs_gpio : -EINVAL;
- max->enable_gpio = (pdata->enable_gpio) ? pdata->enable_gpio : -EINVAL;
max->enable_external_control = pdata->enable_ext_control;
max->curr_gpio_val = pdata->dvs_def_state;
max->curr_vout_reg = MAX8973_VOUT + pdata->dvs_def_state;
max->junction_temp_warning = pdata->junction_temp_warning;
- if (gpio_is_valid(max->enable_gpio))
- max->enable_external_control = true;
-
max->lru_index[0] = max->curr_vout_reg;
if (gpio_is_valid(max->dvs_gpio)) {
@@ -757,27 +753,35 @@ static int max8973_probe(struct i2c_client *client,
break;
}
- if (gpio_is_valid(max->enable_gpio)) {
- config.ena_gpio_flags = GPIOF_OUT_INIT_LOW;
- if (ridata && (ridata->constraints.always_on ||
- ridata->constraints.boot_on))
- config.ena_gpio_flags = GPIOF_OUT_INIT_HIGH;
- config.ena_gpio = max->enable_gpio;
+ if (ridata && (ridata->constraints.always_on ||
+ ridata->constraints.boot_on))
+ gflags = GPIOD_OUT_HIGH;
+ else
+ gflags = GPIOD_OUT_LOW;
+ gpiod = devm_gpiod_get_optional(&client->dev,
+ "maxim,enable",
+ gflags);
+ if (IS_ERR(gpiod))
+ return PTR_ERR(gpiod);
+ if (gpiod) {
+ config.ena_gpiod = gpiod;
+ max->enable_external_control = true;
}
+
break;
case MAX77621:
- if (gpio_is_valid(max->enable_gpio)) {
- ret = devm_gpio_request_one(&client->dev,
- max->enable_gpio, GPIOF_OUT_INIT_HIGH,
- "max8973-en-gpio");
- if (ret) {
- dev_err(&client->dev,
- "gpio_request for gpio %d failed: %d\n",
- max->enable_gpio, ret);
- return ret;
- }
- }
+ /*
+ * We do not let the core switch this regulator on/off,
+ * we just leave it on.
+ */
+ gpiod = devm_gpiod_get_optional(&client->dev,
+ "maxim,enable",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(gpiod))
+ return PTR_ERR(gpiod);
+ if (gpiod)
+ max->enable_external_control = true;
max->desc.enable_reg = MAX8973_VOUT;
max->desc.enable_mask = MAX8973_VOUT_ENABLE;
--
2.14.3
^ permalink raw reply related [flat|nested] 43+ messages in thread
* [PATCH 05/18 v2] regulator: max77686: Pass descriptor instead of GPIO number
2018-04-22 23:07 [PATCH 01/18 v2] regulator: fixed: Convert to use GPIO descriptor only Linus Walleij
` (2 preceding siblings ...)
2018-04-22 23:07 ` [PATCH 04/18 v2] regulator: max8973: Pass descriptor instead of GPIO number Linus Walleij
@ 2018-04-22 23:07 ` Linus Walleij
2018-04-23 6:46 ` Krzysztof Kozlowski
2018-04-22 23:07 ` [PATCH 06/18 v2] regulator: lm363x: " Linus Walleij
` (12 subsequent siblings)
16 siblings, 1 reply; 43+ messages in thread
From: Linus Walleij @ 2018-04-22 23:07 UTC (permalink / raw)
To: Liam Girdwood, Mark Brown
Cc: linux-kernel, Linus Walleij, Chanwoo Choi, Krzysztof Kozlowski,
Bartlomiej Zolnierkiewicz
Instead of passing a global GPIO number, pass a descriptor looked
up from the device tree configuration node.
Cc: Chanwoo Choi <cw00.choi@samsung.com>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- Rebase the patch on the other changes.
---
drivers/regulator/max77686-regulator.c | 19 ++++++++++++-------
1 file changed, 12 insertions(+), 7 deletions(-)
diff --git a/drivers/regulator/max77686-regulator.c b/drivers/regulator/max77686-regulator.c
index c301f3733475..5ebd06f47e6a 100644
--- a/drivers/regulator/max77686-regulator.c
+++ b/drivers/regulator/max77686-regulator.c
@@ -25,8 +25,7 @@
#include <linux/kernel.h>
#include <linux/bug.h>
#include <linux/err.h>
-#include <linux/gpio.h>
-#include <linux/of_gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
@@ -90,6 +89,7 @@ enum max77686_ramp_rate {
};
struct max77686_data {
+ struct device *dev;
DECLARE_BITMAP(gpio_enabled, MAX77686_REGULATORS);
/* Array indexed by regulator id */
@@ -269,16 +269,20 @@ static int max77686_of_parse_cb(struct device_node *np,
case MAX77686_BUCK8:
case MAX77686_BUCK9:
case MAX77686_LDO20 ... MAX77686_LDO22:
- config->ena_gpio = of_get_named_gpio(np,
- "maxim,ena-gpios", 0);
- config->ena_gpio_flags = GPIOF_OUT_INIT_HIGH;
- config->ena_gpio_initialized = true;
+ config->ena_gpiod = devm_gpiod_get_from_of_node(max77686->dev,
+ np,
+ "maxim,ena",
+ 0,
+ GPIOD_OUT_HIGH,
+ "max77686-LDO");
+ if (IS_ERR(config->ena_gpiod))
+ return PTR_ERR(config->ena_gpiod);
break;
default:
return 0;
}
- if (gpio_is_valid(config->ena_gpio)) {
+ if (config->ena_gpiod) {
set_bit(desc->id, max77686->gpio_enabled);
return regmap_update_bits(config->regmap, desc->enable_reg,
@@ -521,6 +525,7 @@ static int max77686_pmic_probe(struct platform_device *pdev)
if (!max77686)
return -ENOMEM;
+ max77686->dev = &pdev->dev;
config.dev = iodev->dev;
config.regmap = iodev->regmap;
config.driver_data = max77686;
--
2.14.3
^ permalink raw reply related [flat|nested] 43+ messages in thread
* Re: [PATCH 05/18 v2] regulator: max77686: Pass descriptor instead of GPIO number
2018-04-22 23:07 ` [PATCH 05/18 v2] regulator: max77686: " Linus Walleij
@ 2018-04-23 6:46 ` Krzysztof Kozlowski
2018-05-14 6:04 ` Linus Walleij
0 siblings, 1 reply; 43+ messages in thread
From: Krzysztof Kozlowski @ 2018-04-23 6:46 UTC (permalink / raw)
To: Linus Walleij
Cc: Liam Girdwood, Mark Brown, linux-kernel, Chanwoo Choi,
Bartlomiej Zolnierkiewicz
On Mon, Apr 23, 2018 at 1:07 AM, Linus Walleij <linus.walleij@linaro.org> wrote:
> Instead of passing a global GPIO number, pass a descriptor looked
> up from the device tree configuration node.
>
> Cc: Chanwoo Choi <cw00.choi@samsung.com>
> Cc: Krzysztof Kozlowski <krzk@kernel.org>
> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
> ---
> ChangeLog v1->v2:
> - Rebase the patch on the other changes.
> ---
> drivers/regulator/max77686-regulator.c | 19 ++++++++++++-------
> 1 file changed, 12 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/regulator/max77686-regulator.c b/drivers/regulator/max77686-regulator.c
> index c301f3733475..5ebd06f47e6a 100644
> --- a/drivers/regulator/max77686-regulator.c
> +++ b/drivers/regulator/max77686-regulator.c
> @@ -25,8 +25,7 @@
> #include <linux/kernel.h>
> #include <linux/bug.h>
> #include <linux/err.h>
> -#include <linux/gpio.h>
> -#include <linux/of_gpio.h>
> +#include <linux/gpio/consumer.h>
> #include <linux/slab.h>
> #include <linux/platform_device.h>
> #include <linux/regulator/driver.h>
> @@ -90,6 +89,7 @@ enum max77686_ramp_rate {
> };
>
> struct max77686_data {
> + struct device *dev;
> DECLARE_BITMAP(gpio_enabled, MAX77686_REGULATORS);
>
> /* Array indexed by regulator id */
> @@ -269,16 +269,20 @@ static int max77686_of_parse_cb(struct device_node *np,
> case MAX77686_BUCK8:
> case MAX77686_BUCK9:
> case MAX77686_LDO20 ... MAX77686_LDO22:
> - config->ena_gpio = of_get_named_gpio(np,
> - "maxim,ena-gpios", 0);
> - config->ena_gpio_flags = GPIOF_OUT_INIT_HIGH;
> - config->ena_gpio_initialized = true;
> + config->ena_gpiod = devm_gpiod_get_from_of_node(max77686->dev,
> + np,
> + "maxim,ena",
> + 0,
> + GPIOD_OUT_HIGH,
> + "max77686-LDO");
> + if (IS_ERR(config->ena_gpiod))
> + return PTR_ERR(config->ena_gpiod);
Both my previous comments remain not addressed:
1. Name: This is also for bucks so how about naming it "max77686-regulator"?
2. Error path here is not equivalent to old code and results in using
default driver's init data. Instead I would prefer to just ignore the
gpio.
Best regards,
Krzysztof
> break;
> default:
> return 0;
> }
>
> - if (gpio_is_valid(config->ena_gpio)) {
> + if (config->ena_gpiod) {
> set_bit(desc->id, max77686->gpio_enabled);
>
> return regmap_update_bits(config->regmap, desc->enable_reg,
> @@ -521,6 +525,7 @@ static int max77686_pmic_probe(struct platform_device *pdev)
> if (!max77686)
> return -ENOMEM;
>
> + max77686->dev = &pdev->dev;
> config.dev = iodev->dev;
> config.regmap = iodev->regmap;
> config.driver_data = max77686;
> --
> 2.14.3
>
^ permalink raw reply [flat|nested] 43+ messages in thread
* Re: [PATCH 05/18 v2] regulator: max77686: Pass descriptor instead of GPIO number
2018-04-23 6:46 ` Krzysztof Kozlowski
@ 2018-05-14 6:04 ` Linus Walleij
0 siblings, 0 replies; 43+ messages in thread
From: Linus Walleij @ 2018-05-14 6:04 UTC (permalink / raw)
To: Krzysztof Kozlowski
Cc: Liam Girdwood, Mark Brown, linux-kernel, Chanwoo Choi,
Bartlomiej Zolnierkiewicz
On Mon, Apr 23, 2018 at 8:46 AM, Krzysztof Kozlowski <krzk@kernel.org> wrote:
> Both my previous comments remain not addressed:
> 1. Name: This is also for bucks so how about naming it "max77686-regulator"?
> 2. Error path here is not equivalent to old code and results in using
> default driver's init data. Instead I would prefer to just ignore the
> gpio.
Sorry for missing these :(
I fixed it up for v3.
Yours,
Linus Walleij
^ permalink raw reply [flat|nested] 43+ messages in thread
* [PATCH 06/18 v2] regulator: lm363x: Pass descriptor instead of GPIO number
2018-04-22 23:07 [PATCH 01/18 v2] regulator: fixed: Convert to use GPIO descriptor only Linus Walleij
` (3 preceding siblings ...)
2018-04-22 23:07 ` [PATCH 05/18 v2] regulator: max77686: " Linus Walleij
@ 2018-04-22 23:07 ` Linus Walleij
2018-04-22 23:07 ` [PATCH 07/18 v2] regulator: lp8788-ldo: " Linus Walleij
` (11 subsequent siblings)
16 siblings, 0 replies; 43+ messages in thread
From: Linus Walleij @ 2018-04-22 23:07 UTC (permalink / raw)
To: Liam Girdwood, Mark Brown; +Cc: linux-kernel, Linus Walleij
Instead of passing a global GPIO number, pass a descriptor looked
up with the standard devm_gpiod_get_index_optional() call.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- Rebase the patch on the other changes.
---
drivers/regulator/lm363x-regulator.c | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/drivers/regulator/lm363x-regulator.c b/drivers/regulator/lm363x-regulator.c
index ce5f7d9ad475..b615a413ca9f 100644
--- a/drivers/regulator/lm363x-regulator.c
+++ b/drivers/regulator/lm363x-regulator.c
@@ -16,7 +16,7 @@
#include <linux/mfd/ti-lmu-register.h>
#include <linux/module.h>
#include <linux/of.h>
-#include <linux/of_gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/of_regulator.h>
@@ -219,7 +219,7 @@ static const struct regulator_desc lm363x_regulator_desc[] = {
},
};
-static int lm363x_regulator_of_get_enable_gpio(struct device_node *np, int id)
+static struct gpio_desc *lm363x_regulator_of_get_enable_gpio(struct device *dev, int id)
{
/*
* Check LCM_EN1/2_GPIO is configured.
@@ -227,11 +227,11 @@ static int lm363x_regulator_of_get_enable_gpio(struct device_node *np, int id)
*/
switch (id) {
case LM3632_LDO_POS:
- return of_get_named_gpio(np, "enable-gpios", 0);
+ return devm_gpiod_get_index_optional(dev, "enable", 0, GPIOD_OUT_LOW);
case LM3632_LDO_NEG:
- return of_get_named_gpio(np, "enable-gpios", 1);
+ return devm_gpiod_get_index_optional(dev, "enable", 1, GPIOD_OUT_LOW);
default:
- return -EINVAL;
+ return NULL;
}
}
@@ -243,7 +243,8 @@ static int lm363x_regulator_probe(struct platform_device *pdev)
struct regulator_dev *rdev;
struct device *dev = &pdev->dev;
int id = pdev->id;
- int ret, ena_gpio;
+ struct gpio_desc *gpiod;
+ int ret;
cfg.dev = dev;
cfg.regmap = regmap;
@@ -252,10 +253,9 @@ static int lm363x_regulator_probe(struct platform_device *pdev)
* LM3632 LDOs can be controlled by external pin.
* Register update is required if the pin is used.
*/
- ena_gpio = lm363x_regulator_of_get_enable_gpio(dev->of_node, id);
- if (gpio_is_valid(ena_gpio)) {
- cfg.ena_gpio = ena_gpio;
- cfg.ena_gpio_flags = GPIOF_OUT_INIT_LOW;
+ gpiod = lm363x_regulator_of_get_enable_gpio(dev, id);
+ if (gpiod) {
+ cfg.ena_gpiod = gpiod;
ret = regmap_update_bits(regmap, LM3632_REG_BIAS_CONFIG,
LM3632_EXT_EN_MASK,
--
2.14.3
^ permalink raw reply related [flat|nested] 43+ messages in thread
* [PATCH 07/18 v2] regulator: lp8788-ldo: Pass descriptor instead of GPIO number
2018-04-22 23:07 [PATCH 01/18 v2] regulator: fixed: Convert to use GPIO descriptor only Linus Walleij
` (4 preceding siblings ...)
2018-04-22 23:07 ` [PATCH 06/18 v2] regulator: lm363x: " Linus Walleij
@ 2018-04-22 23:07 ` Linus Walleij
2018-04-22 23:07 ` [PATCH 08/18 v2] regulator: max8952: " Linus Walleij
` (10 subsequent siblings)
16 siblings, 0 replies; 43+ messages in thread
From: Linus Walleij @ 2018-04-22 23:07 UTC (permalink / raw)
To: Liam Girdwood, Mark Brown; +Cc: linux-kernel, Linus Walleij, Milo Kim
Instead of passing a global GPIO number, pass a descriptor looked
up with the standard devm_gpiod_get_index_optional() call.
This driver has supported passing a LDO enable GPIO for years,
yet this facility has never been put to use in the upstream kernel.
If someone desires to put in place GPIO control for the LDOs,
this can be done by adding a GPIO descriptor table in the MFD
nexus in drivers/mfd/lp8788.c for the LDO device when spawning the
MFD children, or using a board file.
Cc: Milo Kim <milo.kim@ti.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- Rebase the patch on the other changes.
- Collect Lee's ACK.
---
drivers/regulator/lp8788-ldo.c | 32 ++++++++++++++++----------------
include/linux/mfd/lp8788.h | 16 ----------------
2 files changed, 16 insertions(+), 32 deletions(-)
diff --git a/drivers/regulator/lp8788-ldo.c b/drivers/regulator/lp8788-ldo.c
index cbfd35873575..f2347474a106 100644
--- a/drivers/regulator/lp8788-ldo.c
+++ b/drivers/regulator/lp8788-ldo.c
@@ -16,7 +16,7 @@
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/mfd/lp8788.h>
/* register address */
@@ -85,8 +85,6 @@
#define LP8788_STARTUP_TIME_S 3
#define ENABLE_TIME_USEC 32
-#define ENABLE GPIOF_OUT_INIT_HIGH
-#define DISABLE GPIOF_OUT_INIT_LOW
enum lp8788_ldo_id {
DLDO1,
@@ -117,7 +115,7 @@ struct lp8788_ldo {
struct lp8788 *lp;
struct regulator_desc *desc;
struct regulator_dev *regulator;
- struct lp8788_ldo_enable_pin *en_pin;
+ struct gpio_desc *ena_gpiod;
};
/* DLDO 1, 2, 3, 9 voltage table */
@@ -469,7 +467,6 @@ static int lp8788_config_ldo_enable_mode(struct platform_device *pdev,
enum lp8788_ldo_id id)
{
struct lp8788 *lp = ldo->lp;
- struct lp8788_platform_data *pdata = lp->pdata;
enum lp8788_ext_ldo_en_id enable_id;
u8 en_mask[] = {
[EN_ALDO1] = LP8788_EN_SEL_ALDO1_M,
@@ -504,11 +501,18 @@ static int lp8788_config_ldo_enable_mode(struct platform_device *pdev,
return 0;
}
- /* if no platform data for ldo pin, then set default enable mode */
- if (!pdata || !pdata->ldo_pin || !pdata->ldo_pin[enable_id])
+ /* FIXME: check default mode for GPIO here: high or low? */
+ ldo->ena_gpiod = devm_gpiod_get_index_optional(&pdev->dev,
+ "enable",
+ enable_id,
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(ldo->ena_gpiod))
+ return PTR_ERR(ldo->ena_gpiod);
+
+ /* if no GPIO for ldo pin, then set default enable mode */
+ if (!ldo->ena_gpiod)
goto set_default_ldo_enable_mode;
- ldo->en_pin = pdata->ldo_pin[enable_id];
return 0;
set_default_ldo_enable_mode:
@@ -533,10 +537,8 @@ static int lp8788_dldo_probe(struct platform_device *pdev)
if (ret)
return ret;
- if (ldo->en_pin) {
- cfg.ena_gpio = ldo->en_pin->gpio;
- cfg.ena_gpio_flags = ldo->en_pin->init_state;
- }
+ if (ldo->ena_gpiod)
+ cfg.ena_gpiod = ldo->ena_gpiod;
cfg.dev = pdev->dev.parent;
cfg.init_data = lp->pdata ? lp->pdata->dldo_data[id] : NULL;
@@ -582,10 +584,8 @@ static int lp8788_aldo_probe(struct platform_device *pdev)
if (ret)
return ret;
- if (ldo->en_pin) {
- cfg.ena_gpio = ldo->en_pin->gpio;
- cfg.ena_gpio_flags = ldo->en_pin->init_state;
- }
+ if (ldo->ena_gpiod)
+ cfg.ena_gpiod = ldo->ena_gpiod;
cfg.dev = pdev->dev.parent;
cfg.init_data = lp->pdata ? lp->pdata->aldo_data[id] : NULL;
diff --git a/include/linux/mfd/lp8788.h b/include/linux/mfd/lp8788.h
index 786bf6679a28..2010e0de3e34 100644
--- a/include/linux/mfd/lp8788.h
+++ b/include/linux/mfd/lp8788.h
@@ -181,20 +181,6 @@ struct lp8788_buck2_dvs {
enum lp8788_dvs_sel vsel;
};
-/*
- * struct lp8788_ldo_enable_pin
- *
- * Basically, all LDOs are enabled through the I2C commands.
- * But ALDO 1 ~ 5, 7, DLDO 7, 9, 11 can be enabled by external gpio pins.
- *
- * @gpio : gpio number which is used for enabling ldos
- * @init_state : initial gpio state (ex. GPIOF_OUT_INIT_LOW)
- */
-struct lp8788_ldo_enable_pin {
- int gpio;
- int init_state;
-};
-
/*
* struct lp8788_chg_param
* @addr : charging control register address (range : 0x11 ~ 0x1C)
@@ -288,7 +274,6 @@ struct lp8788_vib_platform_data {
* @aldo_data : regulator initial data for analog ldo
* @buck1_dvs : gpio configurations for buck1 dvs
* @buck2_dvs : gpio configurations for buck2 dvs
- * @ldo_pin : gpio configurations for enabling LDOs
* @chg_pdata : platform data for charger driver
* @alarm_sel : rtc alarm selection (1 or 2)
* @bl_pdata : configurable data for backlight driver
@@ -306,7 +291,6 @@ struct lp8788_platform_data {
struct regulator_init_data *aldo_data[LP8788_NUM_ALDOS];
struct lp8788_buck1_dvs *buck1_dvs;
struct lp8788_buck2_dvs *buck2_dvs;
- struct lp8788_ldo_enable_pin *ldo_pin[EN_LDOS_MAX];
/* charger */
struct lp8788_charger_platform_data *chg_pdata;
--
2.14.3
^ permalink raw reply related [flat|nested] 43+ messages in thread
* [PATCH 08/18 v2] regulator: max8952: Pass descriptor instead of GPIO number
2018-04-22 23:07 [PATCH 01/18 v2] regulator: fixed: Convert to use GPIO descriptor only Linus Walleij
` (5 preceding siblings ...)
2018-04-22 23:07 ` [PATCH 07/18 v2] regulator: lp8788-ldo: " Linus Walleij
@ 2018-04-22 23:07 ` Linus Walleij
2018-04-22 23:07 ` [PATCH 09/18 v2] regulator: pfuze100: Delete reference to ena_gpio Linus Walleij
` (9 subsequent siblings)
16 siblings, 0 replies; 43+ messages in thread
From: Linus Walleij @ 2018-04-22 23:07 UTC (permalink / raw)
To: Liam Girdwood, Mark Brown; +Cc: linux-kernel, Linus Walleij, MyungJoo Ham
Instead of passing a global GPIO number for the enable GPIO, pass
a descriptor looked up with the standard devm_gpiod_get_optional()
call.
All users of this regulator use device tree so the transition is
pretty smooth.
Cc: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- Rebase the patch on the other changes.
---
drivers/regulator/max8952.c | 18 +++++++++++++-----
include/linux/regulator/max8952.h | 1 -
2 files changed, 13 insertions(+), 6 deletions(-)
diff --git a/drivers/regulator/max8952.c b/drivers/regulator/max8952.c
index 1096546c05e9..f1e77ed5dfec 100644
--- a/drivers/regulator/max8952.c
+++ b/drivers/regulator/max8952.c
@@ -27,6 +27,7 @@
#include <linux/regulator/driver.h>
#include <linux/regulator/max8952.h>
#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
@@ -148,7 +149,6 @@ static struct max8952_platform_data *max8952_parse_dt(struct device *dev)
pd->gpio_vid0 = of_get_named_gpio(np, "max8952,vid-gpios", 0);
pd->gpio_vid1 = of_get_named_gpio(np, "max8952,vid-gpios", 1);
- pd->gpio_en = of_get_named_gpio(np, "max8952,en-gpio", 0);
if (of_property_read_u32(np, "max8952,default-mode", &pd->default_mode))
dev_warn(dev, "Default mode not specified, assuming 0\n");
@@ -197,6 +197,8 @@ static int max8952_pmic_probe(struct i2c_client *client,
struct regulator_config config = { };
struct max8952_data *max8952;
struct regulator_dev *rdev;
+ struct gpio_desc *gpiod;
+ enum gpiod_flags gflags;
int ret = 0, err = 0;
@@ -224,11 +226,17 @@ static int max8952_pmic_probe(struct i2c_client *client,
config.driver_data = max8952;
config.of_node = client->dev.of_node;
- config.ena_gpio = pdata->gpio_en;
- if (client->dev.of_node)
- config.ena_gpio_initialized = true;
if (pdata->reg_data->constraints.boot_on)
- config.ena_gpio_flags |= GPIOF_OUT_INIT_HIGH;
+ gflags = GPIOD_OUT_HIGH;
+ else
+ gflags = GPIOD_OUT_LOW;
+ gpiod = devm_gpiod_get_optional(&client->dev,
+ "max8952,en",
+ gflags);
+ if (IS_ERR(gpiod))
+ return PTR_ERR(gpiod);
+ if (gpiod)
+ config.ena_gpiod = gpiod;
rdev = devm_regulator_register(&client->dev, ®ulator, &config);
if (IS_ERR(rdev)) {
diff --git a/include/linux/regulator/max8952.h b/include/linux/regulator/max8952.h
index 4dbb63a1d4ab..686c42c041b5 100644
--- a/include/linux/regulator/max8952.h
+++ b/include/linux/regulator/max8952.h
@@ -120,7 +120,6 @@ enum {
struct max8952_platform_data {
int gpio_vid0;
int gpio_vid1;
- int gpio_en;
u32 default_mode;
u32 dvs_mode[MAX8952_NUM_DVS_MODE]; /* MAX8952_DVS_MODEx_XXXXmV */
--
2.14.3
^ permalink raw reply related [flat|nested] 43+ messages in thread
* [PATCH 09/18 v2] regulator: pfuze100: Delete reference to ena_gpio
2018-04-22 23:07 [PATCH 01/18 v2] regulator: fixed: Convert to use GPIO descriptor only Linus Walleij
` (6 preceding siblings ...)
2018-04-22 23:07 ` [PATCH 08/18 v2] regulator: max8952: " Linus Walleij
@ 2018-04-22 23:07 ` Linus Walleij
2018-04-22 23:07 ` [PATCH 10/18 v2] regulator: s2mps11: Pass descriptor instead of GPIO number Linus Walleij
` (8 subsequent siblings)
16 siblings, 0 replies; 43+ messages in thread
From: Linus Walleij @ 2018-04-22 23:07 UTC (permalink / raw)
To: Liam Girdwood, Mark Brown; +Cc: linux-kernel, Linus Walleij
We now pass a GPIO descriptor to the core instead of a global
GPIO number, if this descriptor is NULL the GPIO line is not
used. Just delete the assignment of an invalid GPIO line.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- Rebase the patch on the other changes.
---
drivers/regulator/pfuze100-regulator.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/regulator/pfuze100-regulator.c b/drivers/regulator/pfuze100-regulator.c
index 63922a2167e5..f341d9614a77 100644
--- a/drivers/regulator/pfuze100-regulator.c
+++ b/drivers/regulator/pfuze100-regulator.c
@@ -648,7 +648,6 @@ static int pfuze100_regulator_probe(struct i2c_client *client,
config.init_data = init_data;
config.driver_data = pfuze_chip;
config.of_node = match_of_node(i);
- config.ena_gpio = -EINVAL;
pfuze_chip->regulators[i] =
devm_regulator_register(&client->dev, desc, &config);
--
2.14.3
^ permalink raw reply related [flat|nested] 43+ messages in thread
* [PATCH 10/18 v2] regulator: s2mps11: Pass descriptor instead of GPIO number
2018-04-22 23:07 [PATCH 01/18 v2] regulator: fixed: Convert to use GPIO descriptor only Linus Walleij
` (7 preceding siblings ...)
2018-04-22 23:07 ` [PATCH 09/18 v2] regulator: pfuze100: Delete reference to ena_gpio Linus Walleij
@ 2018-04-22 23:07 ` Linus Walleij
2018-05-14 7:59 ` Krzysztof Kozlowski
2018-04-22 23:07 ` [PATCH 11/18 v2] regulator: s5m8767: " Linus Walleij
` (7 subsequent siblings)
16 siblings, 1 reply; 43+ messages in thread
From: Linus Walleij @ 2018-04-22 23:07 UTC (permalink / raw)
To: Liam Girdwood, Mark Brown
Cc: linux-kernel, Linus Walleij, Krzysztof Kozlowski, Sangbeom Kim,
Chanwoo Choi
Instead of passing a global GPIO number for the enable GPIO, pass
a descriptor looked up with the standard devm_gpiod_get_optional()
call.
This regulator supports passing platform data, but enable/sleep
regulators are looked up from the device tree exclusively, so
we can need not touch other files.
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Sangbeom Kim <sbkim73@samsung.com>
Cc: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- Rebase the patch on the other changes.
---
drivers/regulator/s2mps11.c | 46 ++++++++++++++++++++++-----------------------
1 file changed, 23 insertions(+), 23 deletions(-)
diff --git a/drivers/regulator/s2mps11.c b/drivers/regulator/s2mps11.c
index 7726b874e539..9a1dca26362e 100644
--- a/drivers/regulator/s2mps11.c
+++ b/drivers/regulator/s2mps11.c
@@ -18,7 +18,7 @@
#include <linux/bug.h>
#include <linux/err.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/of.h>
@@ -27,7 +27,6 @@
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/of_regulator.h>
-#include <linux/of_gpio.h>
#include <linux/mfd/samsung/core.h>
#include <linux/mfd/samsung/s2mps11.h>
#include <linux/mfd/samsung/s2mps13.h>
@@ -57,7 +56,7 @@ struct s2mps11_info {
* Array (size: number of regulators) with GPIO-s for external
* sleep control.
*/
- int *ext_control_gpio;
+ struct gpio_desc **ext_control_gpiod;
};
static int get_ramp_delay(int ramp_delay)
@@ -524,7 +523,7 @@ static int s2mps14_regulator_enable(struct regulator_dev *rdev)
case S2MPS14X:
if (test_bit(rdev_get_id(rdev), s2mps11->suspend_state))
val = S2MPS14_ENABLE_SUSPEND;
- else if (gpio_is_valid(s2mps11->ext_control_gpio[rdev_get_id(rdev)]))
+ else if (s2mps11->ext_control_gpiod[rdev_get_id(rdev)])
val = S2MPS14_ENABLE_EXT_CONTROL;
else
val = rdev->desc->enable_mask;
@@ -818,7 +817,7 @@ static int s2mps14_pmic_enable_ext_control(struct s2mps11_info *s2mps11,
static void s2mps14_pmic_dt_parse_ext_control_gpio(struct platform_device *pdev,
struct of_regulator_match *rdata, struct s2mps11_info *s2mps11)
{
- int *gpio = s2mps11->ext_control_gpio;
+ struct gpio_desc **gpio = s2mps11->ext_control_gpiod;
unsigned int i;
unsigned int valid_regulators[3] = { S2MPS14_LDO10, S2MPS14_LDO11,
S2MPS14_LDO12 };
@@ -829,11 +828,20 @@ static void s2mps14_pmic_dt_parse_ext_control_gpio(struct platform_device *pdev,
if (!rdata[reg].init_data || !rdata[reg].of_node)
continue;
- gpio[reg] = of_get_named_gpio(rdata[reg].of_node,
- "samsung,ext-control-gpios", 0);
- if (gpio_is_valid(gpio[reg]))
- dev_dbg(&pdev->dev, "Using GPIO %d for ext-control over %d/%s\n",
- gpio[reg], reg, rdata[reg].name);
+ gpio[reg] = devm_gpiod_get_from_of_node(&pdev->dev,
+ rdata[reg].of_node,
+ "samsung,ext-control-gpios",
+ 0,
+ GPIOD_OUT_HIGH,
+ "s2mps11-LDO");
+ if (IS_ERR(gpio[reg])) {
+ dev_err(&pdev->dev, "Failed to get control GPIO for %d/%s\n",
+ reg, rdata[reg].name);
+ continue;
+ }
+ if (gpio[reg])
+ dev_dbg(&pdev->dev, "Using GPIO for ext-control over %d/%s\n",
+ reg, rdata[reg].name);
}
}
@@ -1139,17 +1147,11 @@ static int s2mps11_pmic_probe(struct platform_device *pdev)
return -EINVAL;
}
- s2mps11->ext_control_gpio = devm_kmalloc(&pdev->dev,
- sizeof(*s2mps11->ext_control_gpio) * rdev_num,
+ s2mps11->ext_control_gpiod = devm_kmalloc(&pdev->dev,
+ sizeof(*s2mps11->ext_control_gpiod) * rdev_num,
GFP_KERNEL);
- if (!s2mps11->ext_control_gpio)
+ if (!s2mps11->ext_control_gpiod)
return -ENOMEM;
- /*
- * 0 is a valid GPIO so initialize all GPIO-s to negative value
- * to indicate that external control won't be used for this regulator.
- */
- for (i = 0; i < rdev_num; i++)
- s2mps11->ext_control_gpio[i] = -EINVAL;
if (!iodev->dev->of_node) {
if (iodev->pdata) {
@@ -1179,8 +1181,6 @@ static int s2mps11_pmic_probe(struct platform_device *pdev)
config.dev = &pdev->dev;
config.regmap = iodev->regmap_pmic;
config.driver_data = s2mps11;
- config.ena_gpio_flags = GPIOF_OUT_INIT_HIGH;
- config.ena_gpio_initialized = true;
for (i = 0; i < rdev_num; i++) {
struct regulator_dev *regulator;
@@ -1191,7 +1191,7 @@ static int s2mps11_pmic_probe(struct platform_device *pdev)
config.init_data = rdata[i].init_data;
config.of_node = rdata[i].of_node;
}
- config.ena_gpio = s2mps11->ext_control_gpio[i];
+ config.ena_gpiod = s2mps11->ext_control_gpiod[i];
regulator = devm_regulator_register(&pdev->dev,
®ulators[i], &config);
@@ -1202,7 +1202,7 @@ static int s2mps11_pmic_probe(struct platform_device *pdev)
goto out;
}
- if (gpio_is_valid(s2mps11->ext_control_gpio[i])) {
+ if (s2mps11->ext_control_gpiod[i]) {
ret = s2mps14_pmic_enable_ext_control(s2mps11,
regulator);
if (ret < 0) {
--
2.14.3
^ permalink raw reply related [flat|nested] 43+ messages in thread
* Re: [PATCH 10/18 v2] regulator: s2mps11: Pass descriptor instead of GPIO number
2018-04-22 23:07 ` [PATCH 10/18 v2] regulator: s2mps11: Pass descriptor instead of GPIO number Linus Walleij
@ 2018-05-14 7:59 ` Krzysztof Kozlowski
2018-05-14 9:40 ` Krzysztof Kozlowski
0 siblings, 1 reply; 43+ messages in thread
From: Krzysztof Kozlowski @ 2018-05-14 7:59 UTC (permalink / raw)
To: Linus Walleij
Cc: Liam Girdwood, Mark Brown, linux-kernel, Sangbeom Kim, Chanwoo Choi
On Mon, Apr 23, 2018 at 1:07 AM, Linus Walleij <linus.walleij@linaro.org> wrote:
> Instead of passing a global GPIO number for the enable GPIO, pass
> a descriptor looked up with the standard devm_gpiod_get_optional()
> call.
>
> This regulator supports passing platform data, but enable/sleep
> regulators are looked up from the device tree exclusively, so
> we can need not touch other files.
>
> Cc: Krzysztof Kozlowski <krzk@kernel.org>
> Cc: Sangbeom Kim <sbkim73@samsung.com>
> Cc: Chanwoo Choi <cw00.choi@samsung.com>
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
> ---
> ChangeLog v1->v2:
> - Rebase the patch on the other changes.
> ---
> drivers/regulator/s2mps11.c | 46 ++++++++++++++++++++++-----------------------
> 1 file changed, 23 insertions(+), 23 deletions(-)
>
> diff --git a/drivers/regulator/s2mps11.c b/drivers/regulator/s2mps11.c
> index 7726b874e539..9a1dca26362e 100644
> --- a/drivers/regulator/s2mps11.c
> +++ b/drivers/regulator/s2mps11.c
> @@ -18,7 +18,7 @@
>
> #include <linux/bug.h>
> #include <linux/err.h>
> -#include <linux/gpio.h>
> +#include <linux/gpio/consumer.h>
> #include <linux/slab.h>
> #include <linux/module.h>
> #include <linux/of.h>
> @@ -27,7 +27,6 @@
> #include <linux/regulator/driver.h>
> #include <linux/regulator/machine.h>
> #include <linux/regulator/of_regulator.h>
> -#include <linux/of_gpio.h>
> #include <linux/mfd/samsung/core.h>
> #include <linux/mfd/samsung/s2mps11.h>
> #include <linux/mfd/samsung/s2mps13.h>
> @@ -57,7 +56,7 @@ struct s2mps11_info {
> * Array (size: number of regulators) with GPIO-s for external
> * sleep control.
> */
> - int *ext_control_gpio;
> + struct gpio_desc **ext_control_gpiod;
> };
>
> static int get_ramp_delay(int ramp_delay)
> @@ -524,7 +523,7 @@ static int s2mps14_regulator_enable(struct regulator_dev *rdev)
> case S2MPS14X:
> if (test_bit(rdev_get_id(rdev), s2mps11->suspend_state))
> val = S2MPS14_ENABLE_SUSPEND;
> - else if (gpio_is_valid(s2mps11->ext_control_gpio[rdev_get_id(rdev)]))
> + else if (s2mps11->ext_control_gpiod[rdev_get_id(rdev)])
> val = S2MPS14_ENABLE_EXT_CONTROL;
> else
> val = rdev->desc->enable_mask;
> @@ -818,7 +817,7 @@ static int s2mps14_pmic_enable_ext_control(struct s2mps11_info *s2mps11,
> static void s2mps14_pmic_dt_parse_ext_control_gpio(struct platform_device *pdev,
> struct of_regulator_match *rdata, struct s2mps11_info *s2mps11)
> {
> - int *gpio = s2mps11->ext_control_gpio;
> + struct gpio_desc **gpio = s2mps11->ext_control_gpiod;
> unsigned int i;
> unsigned int valid_regulators[3] = { S2MPS14_LDO10, S2MPS14_LDO11,
> S2MPS14_LDO12 };
> @@ -829,11 +828,20 @@ static void s2mps14_pmic_dt_parse_ext_control_gpio(struct platform_device *pdev,
> if (!rdata[reg].init_data || !rdata[reg].of_node)
> continue;
>
> - gpio[reg] = of_get_named_gpio(rdata[reg].of_node,
> - "samsung,ext-control-gpios", 0);
> - if (gpio_is_valid(gpio[reg]))
> - dev_dbg(&pdev->dev, "Using GPIO %d for ext-control over %d/%s\n",
> - gpio[reg], reg, rdata[reg].name);
> + gpio[reg] = devm_gpiod_get_from_of_node(&pdev->dev,
> + rdata[reg].of_node,
> + "samsung,ext-control-gpios",
> + 0,
> + GPIOD_OUT_HIGH,
> + "s2mps11-LDO");
The same as with max77686 - this can be also for bucks so how about
the name of "s2mps11-regulator"?
Rest looks good.
Best regards,
Krzysztof
^ permalink raw reply [flat|nested] 43+ messages in thread
* Re: [PATCH 10/18 v2] regulator: s2mps11: Pass descriptor instead of GPIO number
2018-05-14 7:59 ` Krzysztof Kozlowski
@ 2018-05-14 9:40 ` Krzysztof Kozlowski
0 siblings, 0 replies; 43+ messages in thread
From: Krzysztof Kozlowski @ 2018-05-14 9:40 UTC (permalink / raw)
To: Linus Walleij
Cc: Liam Girdwood, Mark Brown, linux-kernel, Sangbeom Kim, Chanwoo Choi
On Mon, May 14, 2018 at 9:59 AM, Krzysztof Kozlowski <krzk@kernel.org> wrote:
> On Mon, Apr 23, 2018 at 1:07 AM, Linus Walleij <linus.walleij@linaro.org> wrote:
>> Instead of passing a global GPIO number for the enable GPIO, pass
>> a descriptor looked up with the standard devm_gpiod_get_optional()
>> call.
>>
>> This regulator supports passing platform data, but enable/sleep
>> regulators are looked up from the device tree exclusively, so
>> we can need not touch other files.
>>
>> Cc: Krzysztof Kozlowski <krzk@kernel.org>
>> Cc: Sangbeom Kim <sbkim73@samsung.com>
>> Cc: Chanwoo Choi <cw00.choi@samsung.com>
>> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
>> ---
>> ChangeLog v1->v2:
>> - Rebase the patch on the other changes.
>> ---
>> drivers/regulator/s2mps11.c | 46 ++++++++++++++++++++++-----------------------
>> 1 file changed, 23 insertions(+), 23 deletions(-)
>>
>> diff --git a/drivers/regulator/s2mps11.c b/drivers/regulator/s2mps11.c
>> index 7726b874e539..9a1dca26362e 100644
>> --- a/drivers/regulator/s2mps11.c
>> +++ b/drivers/regulator/s2mps11.c
>> @@ -18,7 +18,7 @@
>>
>> #include <linux/bug.h>
>> #include <linux/err.h>
>> -#include <linux/gpio.h>
>> +#include <linux/gpio/consumer.h>
>> #include <linux/slab.h>
>> #include <linux/module.h>
>> #include <linux/of.h>
>> @@ -27,7 +27,6 @@
>> #include <linux/regulator/driver.h>
>> #include <linux/regulator/machine.h>
>> #include <linux/regulator/of_regulator.h>
>> -#include <linux/of_gpio.h>
>> #include <linux/mfd/samsung/core.h>
>> #include <linux/mfd/samsung/s2mps11.h>
>> #include <linux/mfd/samsung/s2mps13.h>
>> @@ -57,7 +56,7 @@ struct s2mps11_info {
>> * Array (size: number of regulators) with GPIO-s for external
>> * sleep control.
>> */
>> - int *ext_control_gpio;
>> + struct gpio_desc **ext_control_gpiod;
>> };
>>
>> static int get_ramp_delay(int ramp_delay)
>> @@ -524,7 +523,7 @@ static int s2mps14_regulator_enable(struct regulator_dev *rdev)
>> case S2MPS14X:
>> if (test_bit(rdev_get_id(rdev), s2mps11->suspend_state))
>> val = S2MPS14_ENABLE_SUSPEND;
>> - else if (gpio_is_valid(s2mps11->ext_control_gpio[rdev_get_id(rdev)]))
>> + else if (s2mps11->ext_control_gpiod[rdev_get_id(rdev)])
>> val = S2MPS14_ENABLE_EXT_CONTROL;
>> else
>> val = rdev->desc->enable_mask;
>> @@ -818,7 +817,7 @@ static int s2mps14_pmic_enable_ext_control(struct s2mps11_info *s2mps11,
>> static void s2mps14_pmic_dt_parse_ext_control_gpio(struct platform_device *pdev,
>> struct of_regulator_match *rdata, struct s2mps11_info *s2mps11)
>> {
>> - int *gpio = s2mps11->ext_control_gpio;
>> + struct gpio_desc **gpio = s2mps11->ext_control_gpiod;
>> unsigned int i;
>> unsigned int valid_regulators[3] = { S2MPS14_LDO10, S2MPS14_LDO11,
>> S2MPS14_LDO12 };
>> @@ -829,11 +828,20 @@ static void s2mps14_pmic_dt_parse_ext_control_gpio(struct platform_device *pdev,
>> if (!rdata[reg].init_data || !rdata[reg].of_node)
>> continue;
>>
>> - gpio[reg] = of_get_named_gpio(rdata[reg].of_node,
>> - "samsung,ext-control-gpios", 0);
>> - if (gpio_is_valid(gpio[reg]))
>> - dev_dbg(&pdev->dev, "Using GPIO %d for ext-control over %d/%s\n",
>> - gpio[reg], reg, rdata[reg].name);
>> + gpio[reg] = devm_gpiod_get_from_of_node(&pdev->dev,
>> + rdata[reg].of_node,
>> + "samsung,ext-control-gpios",
>> + 0,
>> + GPIOD_OUT_HIGH,
>> + "s2mps11-LDO");
>
> The same as with max77686 - this can be also for bucks so how about
> the name of "s2mps11-regulator"?
With the name change:
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Tested on Odroid XU3 (with s2mps11 although not using any GPIOs for
regulators, so at least default paths are not broken):
Tested-by: Krzysztof Kozlowski <krzk@kernel.org>
Best regards,
Krzysztof
^ permalink raw reply [flat|nested] 43+ messages in thread
* [PATCH 11/18 v2] regulator: s5m8767: Pass descriptor instead of GPIO number
2018-04-22 23:07 [PATCH 01/18 v2] regulator: fixed: Convert to use GPIO descriptor only Linus Walleij
` (8 preceding siblings ...)
2018-04-22 23:07 ` [PATCH 10/18 v2] regulator: s2mps11: Pass descriptor instead of GPIO number Linus Walleij
@ 2018-04-22 23:07 ` Linus Walleij
2018-04-22 23:07 ` [PATCH 12/18 v2] regulator: tps65090: " Linus Walleij
` (6 subsequent siblings)
16 siblings, 0 replies; 43+ messages in thread
From: Linus Walleij @ 2018-04-22 23:07 UTC (permalink / raw)
To: Liam Girdwood, Mark Brown; +Cc: linux-kernel, Linus Walleij
Instead of passing a global GPIO number for the enable GPIO, pass
a descriptor looked up from the device tree node for the
regulator.
This regulator supports passing platform data, but enable/sleep
regulators are looked up from the device tree exclusively, so
we can need not touch other files.
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- Rebase the patch on the other changes
- Collect Lee's ACK.
---
drivers/regulator/s5m8767.c | 26 +++++++++++++++-----------
include/linux/mfd/samsung/core.h | 4 +++-
2 files changed, 18 insertions(+), 12 deletions(-)
diff --git a/drivers/regulator/s5m8767.c b/drivers/regulator/s5m8767.c
index 4836947e1521..b8443a360646 100644
--- a/drivers/regulator/s5m8767.c
+++ b/drivers/regulator/s5m8767.c
@@ -13,6 +13,7 @@
#include <linux/err.h>
#include <linux/of_gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
@@ -459,15 +460,14 @@ static void s5m8767_regulator_config_ext_control(struct s5m8767_info *s5m8767,
return;
}
- if (!gpio_is_valid(rdata->ext_control_gpio)) {
+ if (!rdata->ext_control_gpiod) {
dev_warn(s5m8767->dev,
"ext-control for %s: GPIO not valid, ignoring\n",
- rdata->reg_node->name);
+ rdata->reg_node->name);
return;
}
- config->ena_gpio = rdata->ext_control_gpio;
- config->ena_gpio_flags = GPIOF_OUT_INIT_HIGH;
+ config->ena_gpiod = rdata->ext_control_gpiod;
}
/*
@@ -577,8 +577,14 @@ static int s5m8767_pmic_dt_parse_pdata(struct platform_device *pdev,
continue;
}
- rdata->ext_control_gpio = of_get_named_gpio(reg_np,
- "s5m8767,pmic-ext-control-gpios", 0);
+ rdata->ext_control_gpiod = devm_gpiod_get_from_of_node(&pdev->dev,
+ reg_np,
+ "s5m8767,pmic-ext-control-gpios",
+ 0,
+ GPIOD_OUT_HIGH,
+ "s5m8767");
+ if (IS_ERR(rdata->ext_control_gpiod))
+ return PTR_ERR(rdata->ext_control_gpiod);
rdata->id = i;
rdata->initdata = of_get_regulator_init_data(
@@ -954,10 +960,8 @@ static int s5m8767_pmic_probe(struct platform_device *pdev)
config.driver_data = s5m8767;
config.regmap = iodev->regmap_pmic;
config.of_node = pdata->regulators[i].reg_node;
- config.ena_gpio = -EINVAL;
- config.ena_gpio_flags = 0;
- config.ena_gpio_initialized = true;
- if (gpio_is_valid(pdata->regulators[i].ext_control_gpio))
+ config.ena_gpiod = NULL;
+ if (pdata->regulators[i].ext_control_gpiod)
s5m8767_regulator_config_ext_control(s5m8767,
&pdata->regulators[i], &config);
@@ -970,7 +974,7 @@ static int s5m8767_pmic_probe(struct platform_device *pdev)
return ret;
}
- if (gpio_is_valid(pdata->regulators[i].ext_control_gpio)) {
+ if (pdata->regulators[i].ext_control_gpiod) {
ret = s5m8767_enable_ext_control(s5m8767, rdev);
if (ret < 0) {
dev_err(s5m8767->dev,
diff --git a/include/linux/mfd/samsung/core.h b/include/linux/mfd/samsung/core.h
index 5a23dd4df432..28f4ae76271d 100644
--- a/include/linux/mfd/samsung/core.h
+++ b/include/linux/mfd/samsung/core.h
@@ -39,6 +39,8 @@
#define STEP_12_5_MV 12500
#define STEP_6_25_MV 6250
+struct gpio_desc;
+
enum sec_device_type {
S5M8751X,
S5M8763X,
@@ -151,7 +153,7 @@ struct sec_regulator_data {
int id;
struct regulator_init_data *initdata;
struct device_node *reg_node;
- int ext_control_gpio;
+ struct gpio_desc *ext_control_gpiod;
};
/*
--
2.14.3
^ permalink raw reply related [flat|nested] 43+ messages in thread
* [PATCH 12/18 v2] regulator: tps65090: Pass descriptor instead of GPIO number
2018-04-22 23:07 [PATCH 01/18 v2] regulator: fixed: Convert to use GPIO descriptor only Linus Walleij
` (9 preceding siblings ...)
2018-04-22 23:07 ` [PATCH 11/18 v2] regulator: s5m8767: " Linus Walleij
@ 2018-04-22 23:07 ` Linus Walleij
2018-04-22 23:07 ` [PATCH 13/18 v2] regulator: wm8994: " Linus Walleij
` (5 subsequent siblings)
16 siblings, 0 replies; 43+ messages in thread
From: Linus Walleij @ 2018-04-22 23:07 UTC (permalink / raw)
To: Liam Girdwood, Mark Brown; +Cc: linux-kernel, Linus Walleij
Instead of passing a global GPIO number for the enable GPIO, pass
a descriptor looked up from the device tree node for the
regulator.
This regulator supports passing platform data, but enable/sleep
regulators are looked up from the device tree exclusively, so
we can need not touch other files.
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- Rebase the patch on the other changes.
- Collect Lee's ACK.
---
drivers/regulator/tps65090-regulator.c | 50 ++++++++++++++++------------------
include/linux/mfd/tps65090.h | 8 ++++--
2 files changed, 28 insertions(+), 30 deletions(-)
diff --git a/drivers/regulator/tps65090-regulator.c b/drivers/regulator/tps65090-regulator.c
index 395f35dc8cdb..2d398fa3b720 100644
--- a/drivers/regulator/tps65090-regulator.c
+++ b/drivers/regulator/tps65090-regulator.c
@@ -19,8 +19,8 @@
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/init.h>
-#include <linux/gpio.h>
-#include <linux/of_gpio.h>
+#include <linux/of.h>
+#include <linux/gpio/consumer.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/platform_device.h>
@@ -300,26 +300,6 @@ static int tps65090_regulator_disable_ext_control(
return tps65090_config_ext_control(ri, false);
}
-static void tps65090_configure_regulator_config(
- struct tps65090_regulator_plat_data *tps_pdata,
- struct regulator_config *config)
-{
- if (gpio_is_valid(tps_pdata->gpio)) {
- int gpio_flag = GPIOF_OUT_INIT_LOW;
-
- if (tps_pdata->reg_init_data->constraints.always_on ||
- tps_pdata->reg_init_data->constraints.boot_on)
- gpio_flag = GPIOF_OUT_INIT_HIGH;
-
- config->ena_gpio = tps_pdata->gpio;
- config->ena_gpio_initialized = true;
- config->ena_gpio_flags = gpio_flag;
- } else {
- config->ena_gpio = -EINVAL;
- config->ena_gpio_initialized = false;
- }
-}
-
#ifdef CONFIG_OF
static struct of_regulator_match tps65090_matches[] = {
{ .name = "dcdc1", },
@@ -385,9 +365,26 @@ static struct tps65090_platform_data *tps65090_parse_dt_reg_data(
rpdata->enable_ext_control = of_property_read_bool(
tps65090_matches[idx].of_node,
"ti,enable-ext-control");
- if (rpdata->enable_ext_control)
- rpdata->gpio = of_get_named_gpio(np,
- "dcdc-ext-control-gpios", 0);
+ if (rpdata->enable_ext_control) {
+ enum gpiod_flags gflags;
+
+ if (ri_data->constraints.always_on ||
+ ri_data->constraints.boot_on)
+ gflags = GPIOD_OUT_HIGH;
+ else
+ gflags = GPIOD_OUT_LOW;
+
+ rpdata->gpiod = devm_gpiod_get_from_of_node(&pdev->dev,
+ tps65090_matches[idx].of_node,
+ "dcdc-ext-control-gpios", 0,
+ gflags,
+ "tps65090");
+ if (IS_ERR(rpdata->gpiod))
+ return ERR_CAST(rpdata->gpiod);
+ if (!rpdata->gpiod)
+ dev_err(&pdev->dev,
+ "could not find DCDC external control GPIO\n");
+ }
if (of_property_read_u32(tps65090_matches[idx].of_node,
"ti,overcurrent-wait",
@@ -455,8 +452,7 @@ static int tps65090_regulator_probe(struct platform_device *pdev)
*/
if (tps_pdata && is_dcdc(num) && tps_pdata->reg_init_data) {
if (tps_pdata->enable_ext_control) {
- tps65090_configure_regulator_config(
- tps_pdata, &config);
+ config.ena_gpiod = tps_pdata->gpiod;
ri->desc->ops = &tps65090_ext_control_ops;
} else {
ret = tps65090_regulator_disable_ext_control(
diff --git a/include/linux/mfd/tps65090.h b/include/linux/mfd/tps65090.h
index 67d144b3b8f9..f05bf4a146e2 100644
--- a/include/linux/mfd/tps65090.h
+++ b/include/linux/mfd/tps65090.h
@@ -83,6 +83,8 @@ enum {
#define TPS65090_MAX_REG TPS65090_REG_AD_OUT2
#define TPS65090_NUM_REGS (TPS65090_MAX_REG + 1)
+struct gpio_desc;
+
struct tps65090 {
struct device *dev;
struct regmap *rmap;
@@ -95,8 +97,8 @@ struct tps65090 {
* @reg_init_data: The regulator init data.
* @enable_ext_control: Enable extrenal control or not. Only available for
* DCDC1, DCDC2 and DCDC3.
- * @gpio: Gpio number if external control is enabled and controlled through
- * gpio.
+ * @gpiod: Gpio descriptor if external control is enabled and controlled through
+ * gpio
* @overcurrent_wait_valid: True if the overcurrent_wait should be applied.
* @overcurrent_wait: Value to set as the overcurrent wait time. This is the
* actual bitfield value, not a time in ms (valid value are 0 - 3).
@@ -104,7 +106,7 @@ struct tps65090 {
struct tps65090_regulator_plat_data {
struct regulator_init_data *reg_init_data;
bool enable_ext_control;
- int gpio;
+ struct gpio_desc *gpiod;
bool overcurrent_wait_valid;
int overcurrent_wait;
};
--
2.14.3
^ permalink raw reply related [flat|nested] 43+ messages in thread
* [PATCH 13/18 v2] regulator: wm8994: Pass descriptor instead of GPIO number
2018-04-22 23:07 [PATCH 01/18 v2] regulator: fixed: Convert to use GPIO descriptor only Linus Walleij
` (10 preceding siblings ...)
2018-04-22 23:07 ` [PATCH 12/18 v2] regulator: tps65090: " Linus Walleij
@ 2018-04-22 23:07 ` Linus Walleij
2018-04-23 8:53 ` Charles Keepax
` (2 more replies)
2018-04-22 23:07 ` [PATCH 14/18 v2] regulator: core: Only support passing enable GPIO descriptors Linus Walleij
` (4 subsequent siblings)
16 siblings, 3 replies; 43+ messages in thread
From: Linus Walleij @ 2018-04-22 23:07 UTC (permalink / raw)
To: Liam Girdwood, Mark Brown
Cc: linux-kernel, Linus Walleij, patches, Charles Keepax
Instead of passing a global GPIO number for the enable GPIO, pass
a descriptor looked up from the device tree node or the board file
decriptor table for the regulator.
There is a single board file passing the GPIOs for LDO1 and LDO2
through platform data, so augment this to pass descriptors
associated with the i2c device as well.
The special GPIO enable DT property for the enable GPIO is
nonstandard but this was accomodated in
commit 6a537d48461deacc57c07ed86d9915e5aa4b3539
"gpio: of: Support regulator nonstandard GPIO properties".
Cc: patches@opensource.cirrus.com
Cc: Charles Keepax <ckeepax@opensource.cirrus.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- Rebase the patch on the other changes.
- Collect Lee's ACK.
---
arch/arm/mach-s3c64xx/mach-crag6410-module.c | 17 +++++++++++++++--
drivers/mfd/wm8994-core.c | 9 ---------
drivers/regulator/wm8994-regulator.c | 19 +++++++++++--------
include/linux/mfd/wm8994/pdata.h | 3 ---
4 files changed, 26 insertions(+), 22 deletions(-)
diff --git a/arch/arm/mach-s3c64xx/mach-crag6410-module.c b/arch/arm/mach-s3c64xx/mach-crag6410-module.c
index 5da041edd3b4..efdb2fcb1c3c 100644
--- a/arch/arm/mach-s3c64xx/mach-crag6410-module.c
+++ b/arch/arm/mach-s3c64xx/mach-crag6410-module.c
@@ -194,8 +194,8 @@ static struct wm8994_pdata wm8994_pdata = {
0x3, /* IRQ out, active high, CMOS */
},
.ldo = {
- { .enable = S3C64XX_GPN(6), .init_data = &wm8994_ldo1, },
- { .enable = S3C64XX_GPN(4), .init_data = &wm8994_ldo2, },
+ { .init_data = &wm8994_ldo1, },
+ { .init_data = &wm8994_ldo2, },
},
};
@@ -203,6 +203,18 @@ static const struct i2c_board_info wm1277_devs[] = {
{ I2C_BOARD_INFO("wm8958", 0x1a), /* WM8958 is the superset */
.platform_data = &wm8994_pdata,
.irq = GLENFARCLAS_PMIC_IRQ_BASE + WM831X_IRQ_GPIO_2,
+ .dev_name = "wm8958",
+ },
+};
+
+static struct gpiod_lookup_table wm8994_gpiod_table = {
+ .dev_id = "i2c-wm8958", /* I2C device name */
+ .table = {
+ GPIO_LOOKUP("GPION", 6,
+ "wlf,ldo1ena", GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP("GPION", 4,
+ "wlf,ldo2ena", GPIO_ACTIVE_HIGH),
+ { },
},
};
@@ -381,6 +393,7 @@ static int wlf_gf_module_probe(struct i2c_client *i2c,
gpiod_add_lookup_table(&wm5102_reva_gpiod_table);
gpiod_add_lookup_table(&wm5102_gpiod_table);
+ gpiod_add_lookup_table(&wm8994_gpiod_table);
if (i < ARRAY_SIZE(gf_mods)) {
dev_info(&i2c->dev, "%s revision %d\n",
diff --git a/drivers/mfd/wm8994-core.c b/drivers/mfd/wm8994-core.c
index 953d0790ffd5..c409464231f6 100644
--- a/drivers/mfd/wm8994-core.c
+++ b/drivers/mfd/wm8994-core.c
@@ -21,7 +21,6 @@
#include <linux/mfd/core.h>
#include <linux/of.h>
#include <linux/of_device.h>
-#include <linux/of_gpio.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
@@ -302,14 +301,6 @@ static int wm8994_set_pdata_from_of(struct wm8994 *wm8994)
if (of_find_property(np, "wlf,ldoena-always-driven", NULL))
pdata->lineout2fb = true;
- pdata->ldo[0].enable = of_get_named_gpio(np, "wlf,ldo1ena", 0);
- if (pdata->ldo[0].enable < 0)
- pdata->ldo[0].enable = 0;
-
- pdata->ldo[1].enable = of_get_named_gpio(np, "wlf,ldo2ena", 0);
- if (pdata->ldo[1].enable < 0)
- pdata->ldo[1].enable = 0;
-
return 0;
}
#else
diff --git a/drivers/regulator/wm8994-regulator.c b/drivers/regulator/wm8994-regulator.c
index 7a4ce6df4f22..d3a5f48119c2 100644
--- a/drivers/regulator/wm8994-regulator.c
+++ b/drivers/regulator/wm8994-regulator.c
@@ -19,7 +19,7 @@
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/slab.h>
#include <linux/mfd/wm8994/core.h>
@@ -129,6 +129,7 @@ static int wm8994_ldo_probe(struct platform_device *pdev)
int id = pdev->id % ARRAY_SIZE(pdata->ldo);
struct regulator_config config = { };
struct wm8994_ldo *ldo;
+ struct gpio_desc *gpiod;
int ret;
dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1);
@@ -145,12 +146,14 @@ static int wm8994_ldo_probe(struct platform_device *pdev)
config.driver_data = ldo;
config.regmap = wm8994->regmap;
config.init_data = &ldo->init_data;
- if (pdata) {
- config.ena_gpio = pdata->ldo[id].enable;
- } else if (wm8994->dev->of_node) {
- config.ena_gpio = wm8994->pdata.ldo[id].enable;
- config.ena_gpio_initialized = true;
- }
+
+ /* Look up LDO enable GPIO from the parent device node */
+ gpiod = devm_gpiod_get_optional(pdev->dev.parent,
+ id ? "wlf,ldo2ena" : "wlf,ldo1ena",
+ GPIOD_OUT_LOW);
+ if (IS_ERR(gpiod))
+ return PTR_ERR(gpiod);
+ config.ena_gpiod = gpiod;
/* Use default constraints if none set up */
if (!pdata || !pdata->ldo[id].init_data || wm8994->dev->of_node) {
@@ -159,7 +162,7 @@ static int wm8994_ldo_probe(struct platform_device *pdev)
ldo->init_data = wm8994_ldo_default[id];
ldo->init_data.consumer_supplies = &ldo->supply;
- if (!config.ena_gpio)
+ if (!gpiod)
ldo->init_data.constraints.valid_ops_mask = 0;
} else {
ldo->init_data = *pdata->ldo[id].init_data;
diff --git a/include/linux/mfd/wm8994/pdata.h b/include/linux/mfd/wm8994/pdata.h
index 90c60524a496..fca67bd194e2 100644
--- a/include/linux/mfd/wm8994/pdata.h
+++ b/include/linux/mfd/wm8994/pdata.h
@@ -20,9 +20,6 @@
#define WM8994_NUM_AIF 3
struct wm8994_ldo_pdata {
- /** GPIOs to enable regulator, 0 or less if not available */
- int enable;
-
const struct regulator_init_data *init_data;
};
--
2.14.3
^ permalink raw reply related [flat|nested] 43+ messages in thread
* Re: [PATCH 13/18 v2] regulator: wm8994: Pass descriptor instead of GPIO number
2018-04-22 23:07 ` [PATCH 13/18 v2] regulator: wm8994: " Linus Walleij
@ 2018-04-23 8:53 ` Charles Keepax
2018-04-23 15:28 ` Mark Brown
2018-05-17 16:41 ` Applied "regulator: wm8994: Pass descriptor instead of GPIO number" to the regulator tree Mark Brown
2 siblings, 0 replies; 43+ messages in thread
From: Charles Keepax @ 2018-04-23 8:53 UTC (permalink / raw)
To: Linus Walleij; +Cc: Liam Girdwood, Mark Brown, linux-kernel, patches
On Mon, Apr 23, 2018 at 01:07:37AM +0200, Linus Walleij wrote:
> Instead of passing a global GPIO number for the enable GPIO, pass
> a descriptor looked up from the device tree node or the board file
> decriptor table for the regulator.
>
> There is a single board file passing the GPIOs for LDO1 and LDO2
> through platform data, so augment this to pass descriptors
> associated with the i2c device as well.
>
> The special GPIO enable DT property for the enable GPIO is
> nonstandard but this was accomodated in
> commit 6a537d48461deacc57c07ed86d9915e5aa4b3539
> "gpio: of: Support regulator nonstandard GPIO properties".
>
> Cc: patches@opensource.cirrus.com
> Cc: Charles Keepax <ckeepax@opensource.cirrus.com>
> Acked-by: Lee Jones <lee.jones@linaro.org>
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
> ---
> ChangeLog v1->v2:
> - Rebase the patch on the other changes.
> - Collect Lee's ACK.
> ---
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Thanks,
Charles
^ permalink raw reply [flat|nested] 43+ messages in thread
* Re: [PATCH 13/18 v2] regulator: wm8994: Pass descriptor instead of GPIO number
2018-04-22 23:07 ` [PATCH 13/18 v2] regulator: wm8994: " Linus Walleij
2018-04-23 8:53 ` Charles Keepax
@ 2018-04-23 15:28 ` Mark Brown
2018-05-14 7:55 ` Linus Walleij
2018-05-17 16:41 ` Applied "regulator: wm8994: Pass descriptor instead of GPIO number" to the regulator tree Mark Brown
2 siblings, 1 reply; 43+ messages in thread
From: Mark Brown @ 2018-04-23 15:28 UTC (permalink / raw)
To: Linus Walleij; +Cc: Liam Girdwood, linux-kernel, patches, Charles Keepax
[-- Attachment #1: Type: text/plain, Size: 304 bytes --]
On Mon, Apr 23, 2018 at 01:07:37AM +0200, Linus Walleij wrote:
> Instead of passing a global GPIO number for the enable GPIO, pass
> a descriptor looked up from the device tree node or the board file
> decriptor table for the regulator.
This doesn't apply against current code, please check and resend.
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]
^ permalink raw reply [flat|nested] 43+ messages in thread
* Re: [PATCH 13/18 v2] regulator: wm8994: Pass descriptor instead of GPIO number
2018-04-23 15:28 ` Mark Brown
@ 2018-05-14 7:55 ` Linus Walleij
0 siblings, 0 replies; 43+ messages in thread
From: Linus Walleij @ 2018-05-14 7:55 UTC (permalink / raw)
To: Mark Brown; +Cc: Liam Girdwood, linux-kernel, patches, Charles Keepax
On Mon, Apr 23, 2018 at 5:28 PM, Mark Brown <broonie@kernel.org> wrote:
> On Mon, Apr 23, 2018 at 01:07:37AM +0200, Linus Walleij wrote:
>> Instead of passing a global GPIO number for the enable GPIO, pass
>> a descriptor looked up from the device tree node or the board file
>> decriptor table for the regulator.
>
> This doesn't apply against current code, please check and resend.
Hm I tried to pull in the series on top of for-4.18 from the regulator
tree, it applied just fine.
No idea what may be wrong, anyways, I will send the v3 now.
I'll create a git branch tested with for-4.18 as well.
Yours,
Linus Walleij
^ permalink raw reply [flat|nested] 43+ messages in thread
* Applied "regulator: wm8994: Pass descriptor instead of GPIO number" to the regulator tree
2018-04-22 23:07 ` [PATCH 13/18 v2] regulator: wm8994: " Linus Walleij
2018-04-23 8:53 ` Charles Keepax
2018-04-23 15:28 ` Mark Brown
@ 2018-05-17 16:41 ` Mark Brown
[not found] ` <CGME20181120134333eucas1p27a19912dddf4b9b34da505e0973c9137@eucas1p2.samsung.com>
2 siblings, 1 reply; 43+ messages in thread
From: Mark Brown @ 2018-05-17 16:41 UTC (permalink / raw)
To: Linus Walleij
Cc: Charles Keepax, Lee Jones, Mark Brown, Liam Girdwood, Mark Brown,
linux-kernel, patches, Charles Keepax, linux-kernel
The patch
regulator: wm8994: Pass descriptor instead of GPIO number
has been applied to the regulator tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git
All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying
to this mail.
Thanks,
Mark
>From 3c6b38d45fa51c7c51c5e2347fc1a6bef6a46525 Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Mon, 14 May 2018 10:06:34 +0200
Subject: [PATCH] regulator: wm8994: Pass descriptor instead of GPIO number
Instead of passing a global GPIO number for the enable GPIO, pass
a descriptor looked up from the device tree node or the board file
decriptor table for the regulator.
There is a single board file passing the GPIOs for LDO1 and LDO2
through platform data, so augment this to pass descriptors
associated with the i2c device as well.
The special GPIO enable DT property for the enable GPIO is
nonstandard but this was accomodated in
commit 6a537d48461deacc57c07ed86d9915e5aa4b3539
"gpio: of: Support regulator nonstandard GPIO properties".
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
arch/arm/mach-s3c64xx/mach-crag6410-module.c | 17 +++++++++++++++--
drivers/mfd/wm8994-core.c | 9 ---------
drivers/regulator/wm8994-regulator.c | 19 +++++++++++--------
include/linux/mfd/wm8994/pdata.h | 3 ---
4 files changed, 26 insertions(+), 22 deletions(-)
diff --git a/arch/arm/mach-s3c64xx/mach-crag6410-module.c b/arch/arm/mach-s3c64xx/mach-crag6410-module.c
index 5aa472892465..76c4855a03bc 100644
--- a/arch/arm/mach-s3c64xx/mach-crag6410-module.c
+++ b/arch/arm/mach-s3c64xx/mach-crag6410-module.c
@@ -194,8 +194,8 @@ static struct wm8994_pdata wm8994_pdata = {
0x3, /* IRQ out, active high, CMOS */
},
.ldo = {
- { .enable = S3C64XX_GPN(6), .init_data = &wm8994_ldo1, },
- { .enable = S3C64XX_GPN(4), .init_data = &wm8994_ldo2, },
+ { .init_data = &wm8994_ldo1, },
+ { .init_data = &wm8994_ldo2, },
},
};
@@ -203,6 +203,18 @@ static const struct i2c_board_info wm1277_devs[] = {
{ I2C_BOARD_INFO("wm8958", 0x1a), /* WM8958 is the superset */
.platform_data = &wm8994_pdata,
.irq = GLENFARCLAS_PMIC_IRQ_BASE + WM831X_IRQ_GPIO_2,
+ .dev_name = "wm8958",
+ },
+};
+
+static struct gpiod_lookup_table wm8994_gpiod_table = {
+ .dev_id = "i2c-wm8958", /* I2C device name */
+ .table = {
+ GPIO_LOOKUP("GPION", 6,
+ "wlf,ldo1ena", GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP("GPION", 4,
+ "wlf,ldo2ena", GPIO_ACTIVE_HIGH),
+ { },
},
};
@@ -381,6 +393,7 @@ static int wlf_gf_module_probe(struct i2c_client *i2c,
gpiod_add_lookup_table(&wm5102_reva_gpiod_table);
gpiod_add_lookup_table(&wm5102_gpiod_table);
+ gpiod_add_lookup_table(&wm8994_gpiod_table);
if (i < ARRAY_SIZE(gf_mods)) {
dev_info(&i2c->dev, "%s revision %d\n",
diff --git a/drivers/mfd/wm8994-core.c b/drivers/mfd/wm8994-core.c
index 953d0790ffd5..c409464231f6 100644
--- a/drivers/mfd/wm8994-core.c
+++ b/drivers/mfd/wm8994-core.c
@@ -21,7 +21,6 @@
#include <linux/mfd/core.h>
#include <linux/of.h>
#include <linux/of_device.h>
-#include <linux/of_gpio.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
@@ -302,14 +301,6 @@ static int wm8994_set_pdata_from_of(struct wm8994 *wm8994)
if (of_find_property(np, "wlf,ldoena-always-driven", NULL))
pdata->lineout2fb = true;
- pdata->ldo[0].enable = of_get_named_gpio(np, "wlf,ldo1ena", 0);
- if (pdata->ldo[0].enable < 0)
- pdata->ldo[0].enable = 0;
-
- pdata->ldo[1].enable = of_get_named_gpio(np, "wlf,ldo2ena", 0);
- if (pdata->ldo[1].enable < 0)
- pdata->ldo[1].enable = 0;
-
return 0;
}
#else
diff --git a/drivers/regulator/wm8994-regulator.c b/drivers/regulator/wm8994-regulator.c
index 7a4ce6df4f22..d3a5f48119c2 100644
--- a/drivers/regulator/wm8994-regulator.c
+++ b/drivers/regulator/wm8994-regulator.c
@@ -19,7 +19,7 @@
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/slab.h>
#include <linux/mfd/wm8994/core.h>
@@ -129,6 +129,7 @@ static int wm8994_ldo_probe(struct platform_device *pdev)
int id = pdev->id % ARRAY_SIZE(pdata->ldo);
struct regulator_config config = { };
struct wm8994_ldo *ldo;
+ struct gpio_desc *gpiod;
int ret;
dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1);
@@ -145,12 +146,14 @@ static int wm8994_ldo_probe(struct platform_device *pdev)
config.driver_data = ldo;
config.regmap = wm8994->regmap;
config.init_data = &ldo->init_data;
- if (pdata) {
- config.ena_gpio = pdata->ldo[id].enable;
- } else if (wm8994->dev->of_node) {
- config.ena_gpio = wm8994->pdata.ldo[id].enable;
- config.ena_gpio_initialized = true;
- }
+
+ /* Look up LDO enable GPIO from the parent device node */
+ gpiod = devm_gpiod_get_optional(pdev->dev.parent,
+ id ? "wlf,ldo2ena" : "wlf,ldo1ena",
+ GPIOD_OUT_LOW);
+ if (IS_ERR(gpiod))
+ return PTR_ERR(gpiod);
+ config.ena_gpiod = gpiod;
/* Use default constraints if none set up */
if (!pdata || !pdata->ldo[id].init_data || wm8994->dev->of_node) {
@@ -159,7 +162,7 @@ static int wm8994_ldo_probe(struct platform_device *pdev)
ldo->init_data = wm8994_ldo_default[id];
ldo->init_data.consumer_supplies = &ldo->supply;
- if (!config.ena_gpio)
+ if (!gpiod)
ldo->init_data.constraints.valid_ops_mask = 0;
} else {
ldo->init_data = *pdata->ldo[id].init_data;
diff --git a/include/linux/mfd/wm8994/pdata.h b/include/linux/mfd/wm8994/pdata.h
index 90c60524a496..fca67bd194e2 100644
--- a/include/linux/mfd/wm8994/pdata.h
+++ b/include/linux/mfd/wm8994/pdata.h
@@ -20,9 +20,6 @@
#define WM8994_NUM_AIF 3
struct wm8994_ldo_pdata {
- /** GPIOs to enable regulator, 0 or less if not available */
- int enable;
-
const struct regulator_init_data *init_data;
};
--
2.17.0
^ permalink raw reply related [flat|nested] 43+ messages in thread
* [PATCH 14/18 v2] regulator: core: Only support passing enable GPIO descriptors
2018-04-22 23:07 [PATCH 01/18 v2] regulator: fixed: Convert to use GPIO descriptor only Linus Walleij
` (11 preceding siblings ...)
2018-04-22 23:07 ` [PATCH 13/18 v2] regulator: wm8994: " Linus Walleij
@ 2018-04-22 23:07 ` Linus Walleij
2018-04-22 23:07 ` [PATCH 15/18 v2] regulator: fixed/gpio: Pull inversion/OD into gpiolib Linus Walleij
` (3 subsequent siblings)
16 siblings, 0 replies; 43+ messages in thread
From: Linus Walleij @ 2018-04-22 23:07 UTC (permalink / raw)
To: Liam Girdwood, Mark Brown; +Cc: linux-kernel, Linus Walleij
Now that we changed all providers to pass descriptors into the core
for enable GPIOs instead of a global GPIO number, delete the support
for passing GPIO numbers in, and we get a cleanup and size reduction
in the core, and from a GPIO point of view we use the modern, cleaner
interface.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- Rebase the patch on the other changes.
---
drivers/regulator/core.c | 32 ++++++--------------------------
include/linux/regulator/driver.h | 10 +---------
2 files changed, 7 insertions(+), 35 deletions(-)
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index d4803460a557..8d56f9b906b0 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -23,7 +23,6 @@
#include <linux/mutex.h>
#include <linux/suspend.h>
#include <linux/delay.h>
-#include <linux/gpio.h>
#include <linux/gpio/consumer.h>
#include <linux/of.h>
#include <linux/regmap.h>
@@ -1935,35 +1934,19 @@ static int regulator_ena_gpio_request(struct regulator_dev *rdev,
{
struct regulator_enable_gpio *pin;
struct gpio_desc *gpiod;
- int ret;
- if (config->ena_gpiod)
- gpiod = config->ena_gpiod;
- else
- gpiod = gpio_to_desc(config->ena_gpio);
+ gpiod = config->ena_gpiod;
list_for_each_entry(pin, ®ulator_ena_gpio_list, list) {
if (pin->gpiod == gpiod) {
- rdev_dbg(rdev, "GPIO %d is already used\n",
- config->ena_gpio);
+ rdev_dbg(rdev, "GPIO is already used\n");
goto update_ena_gpio_to_rdev;
}
}
- if (!config->ena_gpiod) {
- ret = gpio_request_one(config->ena_gpio,
- GPIOF_DIR_OUT | config->ena_gpio_flags,
- rdev_get_name(rdev));
- if (ret)
- return ret;
- }
-
pin = kzalloc(sizeof(struct regulator_enable_gpio), GFP_KERNEL);
- if (pin == NULL) {
- if (!config->ena_gpiod)
- gpio_free(config->ena_gpio);
+ if (pin == NULL)
return -ENOMEM;
- }
pin->gpiod = gpiod;
pin->ena_gpio_invert = config->ena_gpio_invert;
@@ -1987,7 +1970,6 @@ static void regulator_ena_gpio_free(struct regulator_dev *rdev)
if (pin->gpiod == rdev->ena_pin->gpiod) {
if (pin->request_count <= 1) {
pin->request_count = 0;
- gpiod_put(pin->gpiod);
list_del(&pin->list);
kfree(pin);
rdev->ena_pin = NULL;
@@ -4160,15 +4142,13 @@ regulator_register(const struct regulator_desc *regulator_desc,
goto clean;
}
- if (config->ena_gpiod ||
- ((config->ena_gpio || config->ena_gpio_initialized) &&
- gpio_is_valid(config->ena_gpio))) {
+ if (config->ena_gpiod) {
mutex_lock(®ulator_list_mutex);
ret = regulator_ena_gpio_request(rdev, config);
mutex_unlock(®ulator_list_mutex);
if (ret != 0) {
- rdev_err(rdev, "Failed to request enable GPIO%d: %d\n",
- config->ena_gpio, ret);
+ rdev_err(rdev, "Failed to request enable GPIO: %d\n",
+ ret);
goto clean;
}
}
diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h
index 4fc96cb8e5d7..8900c230c899 100644
--- a/include/linux/regulator/driver.h
+++ b/include/linux/regulator/driver.h
@@ -384,13 +384,8 @@ struct regulator_desc {
* NULL).
* @regmap: regmap to use for core regmap helpers if dev_get_regmap() is
* insufficient.
- * @ena_gpio_initialized: GPIO controlling regulator enable was properly
- * initialized, meaning that >= 0 is a valid gpio
- * identifier and < 0 is a non existent gpio.
- * @ena_gpio: GPIO controlling regulator enable.
- * @ena_gpiod: GPIO descriptor controlling regulator enable.
+ * @ena_gpiod: GPIO controlling regulator enable.
* @ena_gpio_invert: Sense for GPIO enable control.
- * @ena_gpio_flags: Flags to use when calling gpio_request_one()
*/
struct regulator_config {
struct device *dev;
@@ -399,11 +394,8 @@ struct regulator_config {
struct device_node *of_node;
struct regmap *regmap;
- bool ena_gpio_initialized;
- int ena_gpio;
struct gpio_desc *ena_gpiod;
unsigned int ena_gpio_invert:1;
- unsigned int ena_gpio_flags;
};
/*
--
2.14.3
^ permalink raw reply related [flat|nested] 43+ messages in thread
* [PATCH 15/18 v2] regulator: fixed/gpio: Pull inversion/OD into gpiolib
2018-04-22 23:07 [PATCH 01/18 v2] regulator: fixed: Convert to use GPIO descriptor only Linus Walleij
` (12 preceding siblings ...)
2018-04-22 23:07 ` [PATCH 14/18 v2] regulator: core: Only support passing enable GPIO descriptors Linus Walleij
@ 2018-04-22 23:07 ` Linus Walleij
2018-04-22 23:07 ` [PATCH 16/18 v2] regulator: fixed/gpio: Update device tree bindings Linus Walleij
` (2 subsequent siblings)
16 siblings, 0 replies; 43+ messages in thread
From: Linus Walleij @ 2018-04-22 23:07 UTC (permalink / raw)
To: Liam Girdwood, Mark Brown
Cc: linux-kernel, Linus Walleij, Alexander Shiyan, Haojian Zhuang,
Aaro Koskinen, Tony Lindgren, Mike Rapoport, Robert Jarzmik,
Philipp Zabel, Daniel Mack, Marc Zyngier, Geert Uytterhoeven,
Russell King
This pushes the handling of inversion semantics and open drain
settings to the GPIO descriptor and gpiolib. All affected board
files are also augmented.
This is especiallt nice since we don't have to have any
confusing flags passed around to the left and right littering
the fixed and GPIO regulator drivers and the regulator core.
It is all just very straight-forward: the core asks the GPIO
line to be asserted or deasserted and gpiolib deals with the
rest depending on how the platform is configured: if the line
is active low, it deals with that, if the line is open drain,
it deals with that too.
Cc: Alexander Shiyan <shc_work@mail.ru> # i.MX boards user
Cc: Haojian Zhuang <haojian.zhuang@gmail.com> # MMP2 maintainer
Cc: Aaro Koskinen <aaro.koskinen@iki.fi> # OMAP1 maintainer
Cc: Tony Lindgren <tony@atomide.com> # OMAP1,2,3 maintainer
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com> # EM-X270 maintainer
Cc: Robert Jarzmik <robert.jarzmik@free.fr> # EZX maintainer
Cc: Philipp Zabel <philipp.zabel@gmail.com> # Magician maintainer
Cc: Daniel Mack <zonque@gmail.com> # Raumfeld maintainer
Cc: Marc Zyngier <marc.zyngier@arm.com> # Zeus maintainer
Cc: Geert Uytterhoeven <geert+renesas@glider.be> # SuperH pinctrl/GPIO maintainer
Cc: Russell King <rmk+kernel@armlinux.org.uk> # SA1100
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- Rebase the patch series
- Cover the new user added in sa1100
---
arch/arm/mach-imx/mach-mx21ads.c | 1 -
arch/arm/mach-imx/mach-mx27ads.c | 2 +-
arch/arm/mach-mmp/brownstone.c | 1 -
arch/arm/mach-omap1/board-ams-delta.c | 1 -
arch/arm/mach-omap2/pdata-quirks.c | 1 -
arch/arm/mach-pxa/em-x270.c | 1 -
arch/arm/mach-pxa/ezx.c | 3 +--
arch/arm/mach-pxa/hx4700.c | 3 +--
arch/arm/mach-pxa/magician.c | 3 +--
arch/arm/mach-pxa/raumfeld.c | 1 -
arch/arm/mach-pxa/zeus.c | 3 +--
arch/arm/mach-sa1100/assabet.c | 1 -
arch/sh/boards/mach-ecovec24/setup.c | 2 --
.../intel-mid/device_libs/platform_bcm43xx.c | 1 -
drivers/regulator/core.c | 8 ++----
drivers/regulator/da9055-regulator.c | 1 -
drivers/regulator/fixed.c | 30 ++++++----------------
drivers/regulator/gpio-regulator.c | 24 +++++++----------
include/linux/regulator/fixed.h | 10 --------
include/linux/regulator/gpio-regulator.h | 3 ---
20 files changed, 24 insertions(+), 76 deletions(-)
diff --git a/arch/arm/mach-imx/mach-mx21ads.c b/arch/arm/mach-imx/mach-mx21ads.c
index 5d3b6b4fe6db..8c4a4920468a 100644
--- a/arch/arm/mach-imx/mach-mx21ads.c
+++ b/arch/arm/mach-imx/mach-mx21ads.c
@@ -205,7 +205,6 @@ static struct regulator_init_data mx21ads_lcd_regulator_init_data = {
static struct fixed_voltage_config mx21ads_lcd_regulator_pdata = {
.supply_name = "LCD",
.microvolts = 3300000,
- .enable_high = 1,
.init_data = &mx21ads_lcd_regulator_init_data,
};
diff --git a/arch/arm/mach-imx/mach-mx27ads.c b/arch/arm/mach-imx/mach-mx27ads.c
index 0fdb88db0cbd..08a7e217b9e6 100644
--- a/arch/arm/mach-imx/mach-mx27ads.c
+++ b/arch/arm/mach-imx/mach-mx27ads.c
@@ -237,7 +237,7 @@ static struct fixed_voltage_config mx27ads_lcd_regulator_pdata = {
static struct gpiod_lookup_table mx27ads_lcd_regulator_gpiod_table = {
.dev_id = "reg-fixed-voltage.0", /* Let's hope ID 0 is what we get */
.table = {
- GPIO_LOOKUP("LCD", 0, "enable", GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP("LCD", 0, "enable", GPIO_ACTIVE_LOW),
{ },
},
};
diff --git a/arch/arm/mach-mmp/brownstone.c b/arch/arm/mach-mmp/brownstone.c
index 563b5a278d65..502343b32c7f 100644
--- a/arch/arm/mach-mmp/brownstone.c
+++ b/arch/arm/mach-mmp/brownstone.c
@@ -149,7 +149,6 @@ static struct regulator_init_data brownstone_v_5vp_data = {
static struct fixed_voltage_config brownstone_v_5vp = {
.supply_name = "v_5vp",
.microvolts = 5000000,
- .enable_high = 1,
.enabled_at_boot = 1,
.init_data = &brownstone_v_5vp_data,
};
diff --git a/arch/arm/mach-omap1/board-ams-delta.c b/arch/arm/mach-omap1/board-ams-delta.c
index 759fa18f6ab4..22e94da4af85 100644
--- a/arch/arm/mach-omap1/board-ams-delta.c
+++ b/arch/arm/mach-omap1/board-ams-delta.c
@@ -275,7 +275,6 @@ static struct fixed_voltage_config modem_nreset_config = {
.supply_name = "modem_nreset",
.microvolts = 3300000,
.startup_delay = 25000,
- .enable_high = 1,
.enabled_at_boot = 1,
.init_data = &modem_nreset_data,
};
diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c
index 7d1447204fb8..1c740c7e7c55 100644
--- a/arch/arm/mach-omap2/pdata-quirks.c
+++ b/arch/arm/mach-omap2/pdata-quirks.c
@@ -332,7 +332,6 @@ static struct fixed_voltage_config pandora_vwlan = {
.supply_name = "vwlan",
.microvolts = 1800000, /* 1.8V */
.startup_delay = 50000, /* 50ms */
- .enable_high = 1,
.init_data = &pandora_vmmc3,
};
diff --git a/arch/arm/mach-pxa/em-x270.c b/arch/arm/mach-pxa/em-x270.c
index 6d7d93981098..8d9ec158f118 100644
--- a/arch/arm/mach-pxa/em-x270.c
+++ b/arch/arm/mach-pxa/em-x270.c
@@ -987,7 +987,6 @@ static struct fixed_voltage_config camera_dummy_config = {
.supply_name = "camera_vdd",
.input_supply = "vcc cam",
.microvolts = 2800000,
- .enable_high = 0,
.init_data = &camera_dummy_initdata,
};
diff --git a/arch/arm/mach-pxa/ezx.c b/arch/arm/mach-pxa/ezx.c
index 2b4bd6d94855..13ebdfd697cc 100644
--- a/arch/arm/mach-pxa/ezx.c
+++ b/arch/arm/mach-pxa/ezx.c
@@ -714,7 +714,6 @@ static struct regulator_init_data camera_regulator_initdata = {
static struct fixed_voltage_config camera_regulator_config = {
.supply_name = "camera_vdd",
.microvolts = 2800000,
- .enable_high = 0,
.init_data = &camera_regulator_initdata,
};
@@ -730,7 +729,7 @@ static struct gpiod_lookup_table camera_supply_gpiod_table = {
.dev_id = "reg-fixed-voltage.1",
.table = {
GPIO_LOOKUP("gpio-pxa", GPIO50_nCAM_EN,
- "enable", GPIO_ACTIVE_HIGH),
+ "enable", GPIO_ACTIVE_LOW),
{ },
},
};
diff --git a/arch/arm/mach-pxa/hx4700.c b/arch/arm/mach-pxa/hx4700.c
index 6717a10180eb..05148016c620 100644
--- a/arch/arm/mach-pxa/hx4700.c
+++ b/arch/arm/mach-pxa/hx4700.c
@@ -712,7 +712,6 @@ static struct gpio_regulator_state bq24022_states[] = {
static struct gpio_regulator_config bq24022_info = {
.supply_name = "bq24022",
- .enable_high = 0,
.enabled_at_boot = 0,
.gpios = bq24022_gpios,
@@ -737,7 +736,7 @@ static struct gpiod_lookup_table bq24022_gpiod_table = {
.dev_id = "gpio-regulator",
.table = {
GPIO_LOOKUP("gpio-pxa", GPIO72_HX4700_BQ24022_nCHARGE_EN,
- "enable", GPIO_ACTIVE_HIGH),
+ "enable", GPIO_ACTIVE_LOW),
{ },
},
};
diff --git a/arch/arm/mach-pxa/magician.c b/arch/arm/mach-pxa/magician.c
index 9a5bda3ea194..fab63c52d50e 100644
--- a/arch/arm/mach-pxa/magician.c
+++ b/arch/arm/mach-pxa/magician.c
@@ -657,7 +657,6 @@ static struct gpio_regulator_state bq24022_states[] = {
static struct gpio_regulator_config bq24022_info = {
.supply_name = "bq24022",
- .enable_high = 0,
.enabled_at_boot = 1,
.gpios = bq24022_gpios,
@@ -682,7 +681,7 @@ static struct gpiod_lookup_table bq24022_gpiod_table = {
.dev_id = "gpio-regulator",
.table = {
GPIO_LOOKUP("gpio-pxa", GPIO30_MAGICIAN_BQ24022_nCHARGE_EN,
- "enable", GPIO_ACTIVE_HIGH),
+ "enable", GPIO_ACTIVE_LOW),
{ },
},
};
diff --git a/arch/arm/mach-pxa/raumfeld.c b/arch/arm/mach-pxa/raumfeld.c
index ee766e4ebddc..30ea27b85bb0 100644
--- a/arch/arm/mach-pxa/raumfeld.c
+++ b/arch/arm/mach-pxa/raumfeld.c
@@ -886,7 +886,6 @@ static struct regulator_init_data audio_va_initdata = {
static struct fixed_voltage_config audio_va_config = {
.supply_name = "audio_va",
.microvolts = 5000000,
- .enable_high = 1,
.enabled_at_boot = 0,
.init_data = &audio_va_initdata,
};
diff --git a/arch/arm/mach-pxa/zeus.c b/arch/arm/mach-pxa/zeus.c
index 58e05afcece0..428c2db6818a 100644
--- a/arch/arm/mach-pxa/zeus.c
+++ b/arch/arm/mach-pxa/zeus.c
@@ -426,7 +426,7 @@ static struct gpiod_lookup_table can_regulator_gpiod_table = {
.dev_id = "reg-fixed-voltage.0",
.table = {
GPIO_LOOKUP("gpio-pxa", ZEUS_CAN_SHDN_GPIO,
- "enable", GPIO_ACTIVE_HIGH),
+ "enable", GPIO_ACTIVE_LOW),
{ },
},
};
@@ -547,7 +547,6 @@ static struct regulator_init_data zeus_ohci_regulator_data = {
static struct fixed_voltage_config zeus_ohci_regulator_config = {
.supply_name = "vbus2",
.microvolts = 5000000, /* 5.0V */
- .enable_high = 1,
.startup_delay = 0,
.init_data = &zeus_ohci_regulator_data,
};
diff --git a/arch/arm/mach-sa1100/assabet.c b/arch/arm/mach-sa1100/assabet.c
index dbb53c520165..705196a4b66f 100644
--- a/arch/arm/mach-sa1100/assabet.c
+++ b/arch/arm/mach-sa1100/assabet.c
@@ -468,7 +468,6 @@ static struct regulator_consumer_supply assabet_cf_vcc_consumers[] = {
static struct fixed_voltage_config assabet_cf_vcc_pdata __initdata = {
.supply_name = "cf-power",
.microvolts = 3300000,
- .enable_high = 1,
};
static struct gpiod_lookup_table assabet_cf_vcc_gpio_table = {
diff --git a/arch/sh/boards/mach-ecovec24/setup.c b/arch/sh/boards/mach-ecovec24/setup.c
index c296b5c399b7..6b9542616447 100644
--- a/arch/sh/boards/mach-ecovec24/setup.c
+++ b/arch/sh/boards/mach-ecovec24/setup.c
@@ -633,7 +633,6 @@ static struct regulator_init_data cn12_power_init_data = {
static struct fixed_voltage_config cn12_power_info = {
.supply_name = "CN12 SD/MMC Vdd",
.microvolts = 3300000,
- .enable_high = 1,
.init_data = &cn12_power_init_data,
};
@@ -674,7 +673,6 @@ static struct regulator_init_data sdhi0_power_init_data = {
static struct fixed_voltage_config sdhi0_power_info = {
.supply_name = "CN11 SD/MMC Vdd",
.microvolts = 3300000,
- .enable_high = 1,
.init_data = &sdhi0_power_init_data,
};
diff --git a/arch/x86/platform/intel-mid/device_libs/platform_bcm43xx.c b/arch/x86/platform/intel-mid/device_libs/platform_bcm43xx.c
index fc77d69e51d7..8a579aad0b27 100644
--- a/arch/x86/platform/intel-mid/device_libs/platform_bcm43xx.c
+++ b/arch/x86/platform/intel-mid/device_libs/platform_bcm43xx.c
@@ -44,7 +44,6 @@ static struct fixed_voltage_config bcm43xx_vmmc = {
*/
.microvolts = 2000000, /* 1.8V */
.startup_delay = 250 * 1000, /* 250ms */
- .enable_high = 1, /* active high */
.enabled_at_boot = 0, /* disabled at boot */
.init_data = &bcm43xx_vmmc_data,
};
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 8d56f9b906b0..f3050eaa0a7e 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -79,7 +79,6 @@ struct regulator_enable_gpio {
struct gpio_desc *gpiod;
u32 enable_count; /* a number of enabled shared GPIO */
u32 request_count; /* a number of requested shared GPIO */
- unsigned int ena_gpio_invert:1;
};
/*
@@ -1949,7 +1948,6 @@ static int regulator_ena_gpio_request(struct regulator_dev *rdev,
return -ENOMEM;
pin->gpiod = gpiod;
- pin->ena_gpio_invert = config->ena_gpio_invert;
list_add(&pin->list, ®ulator_ena_gpio_list);
update_ena_gpio_to_rdev:
@@ -1999,8 +1997,7 @@ static int regulator_ena_gpio_ctrl(struct regulator_dev *rdev, bool enable)
if (enable) {
/* Enable GPIO at initial use */
if (pin->enable_count == 0)
- gpiod_set_value_cansleep(pin->gpiod,
- !pin->ena_gpio_invert);
+ gpiod_set_value_cansleep(pin->gpiod, 1);
pin->enable_count++;
} else {
@@ -2011,8 +2008,7 @@ static int regulator_ena_gpio_ctrl(struct regulator_dev *rdev, bool enable)
/* Disable GPIO if not used */
if (pin->enable_count <= 1) {
- gpiod_set_value_cansleep(pin->gpiod,
- pin->ena_gpio_invert);
+ gpiod_set_value_cansleep(pin->gpiod, 0);
pin->enable_count = 0;
}
}
diff --git a/drivers/regulator/da9055-regulator.c b/drivers/regulator/da9055-regulator.c
index f40c3b8644ae..1a384258d0e5 100644
--- a/drivers/regulator/da9055-regulator.c
+++ b/drivers/regulator/da9055-regulator.c
@@ -457,7 +457,6 @@ static int da9055_gpio_init(struct da9055_regulator *regulator,
int gpio_mux = pdata->gpio_ren[id];
config->ena_gpiod = pdata->ena_gpiods[id];
- config->ena_gpio_invert = 1;
/*
* GPI pin is muxed with regulator to control the
diff --git a/drivers/regulator/fixed.c b/drivers/regulator/fixed.c
index 1142f195529b..8c479cdb69a9 100644
--- a/drivers/regulator/fixed.c
+++ b/drivers/regulator/fixed.c
@@ -79,10 +79,6 @@ of_get_fixed_voltage_config(struct device *dev,
of_property_read_u32(np, "startup-delay-us", &config->startup_delay);
- config->enable_high = of_property_read_bool(np, "enable-active-high");
- config->gpio_is_open_drain = of_property_read_bool(np,
- "gpio-open-drain");
-
if (of_find_property(np, "vin-supply", NULL))
config->input_supply = "vin";
@@ -146,24 +142,14 @@ static int reg_fixed_voltage_probe(struct platform_device *pdev)
drvdata->desc.fixed_uV = config->microvolts;
- cfg.ena_gpio_invert = !config->enable_high;
- if (config->enabled_at_boot) {
- if (config->enable_high)
- gflags = GPIOD_OUT_HIGH;
- else
- gflags = GPIOD_OUT_LOW;
- } else {
- if (config->enable_high)
- gflags = GPIOD_OUT_LOW;
- else
- gflags = GPIOD_OUT_HIGH;
- }
- if (config->gpio_is_open_drain) {
- if (gflags == GPIOD_OUT_HIGH)
- gflags = GPIOD_OUT_HIGH_OPEN_DRAIN;
- else
- gflags = GPIOD_OUT_LOW_OPEN_DRAIN;
- }
+ /*
+ * The signal will be inverted by the GPIO core if flagged so in the
+ * decriptor.
+ */
+ if (config->enabled_at_boot)
+ gflags = GPIOD_OUT_HIGH;
+ else
+ gflags = GPIOD_OUT_LOW;
cfg.ena_gpiod = devm_gpiod_get_optional(&pdev->dev, NULL, gflags);
if (IS_ERR(cfg.ena_gpiod))
diff --git a/drivers/regulator/gpio-regulator.c b/drivers/regulator/gpio-regulator.c
index 9d6094c4d71c..16ef08406739 100644
--- a/drivers/regulator/gpio-regulator.c
+++ b/drivers/regulator/gpio-regulator.c
@@ -154,9 +154,6 @@ of_get_gpio_regulator_config(struct device *dev, struct device_node *np,
config->supply_name = config->init_data->constraints.name;
- if (of_property_read_bool(np, "enable-active-high"))
- config->enable_high = true;
-
if (of_property_read_bool(np, "enable-at-boot"))
config->enabled_at_boot = true;
@@ -338,18 +335,15 @@ static int gpio_regulator_probe(struct platform_device *pdev)
cfg.driver_data = drvdata;
cfg.of_node = np;
- cfg.ena_gpio_invert = !config->enable_high;
- if (config->enabled_at_boot) {
- if (config->enable_high)
- gflags = GPIOD_OUT_HIGH;
- else
- gflags = GPIOD_OUT_LOW;
- } else {
- if (config->enable_high)
- gflags = GPIOD_OUT_LOW;
- else
- gflags = GPIOD_OUT_HIGH;
- }
+ /*
+ * The signal will be inverted by the GPIO core if flagged so in the
+ * decriptor.
+ */
+ if (config->enabled_at_boot)
+ gflags = GPIOD_OUT_HIGH;
+ else
+ gflags = GPIOD_OUT_LOW;
+
cfg.ena_gpiod = devm_gpiod_get_optional(&pdev->dev, "enable", gflags);
if (IS_ERR(cfg.ena_gpiod)) {
ret = PTR_ERR(cfg.ena_gpiod);
diff --git a/include/linux/regulator/fixed.h b/include/linux/regulator/fixed.h
index 1a4340ed8e2b..f10140da7145 100644
--- a/include/linux/regulator/fixed.h
+++ b/include/linux/regulator/fixed.h
@@ -25,14 +25,6 @@ struct regulator_init_data;
* @input_supply: Name of the input regulator supply
* @microvolts: Output voltage of regulator
* @startup_delay: Start-up time in microseconds
- * @gpio_is_open_drain: Gpio pin is open drain or normal type.
- * If it is open drain type then HIGH will be set
- * through PULL-UP with setting gpio as input
- * and low will be set as gpio-output with driven
- * to low. For non-open-drain case, the gpio will
- * will be in output and drive to low/high accordingly.
- * @enable_high: Polarity of enable GPIO
- * 1 = Active high, 0 = Active low
* @enabled_at_boot: Whether regulator has been enabled at
* boot or not. 1 = Yes, 0 = No
* This is used to keep the regulator at
@@ -48,8 +40,6 @@ struct fixed_voltage_config {
const char *input_supply;
int microvolts;
unsigned startup_delay;
- unsigned gpio_is_open_drain:1;
- unsigned enable_high:1;
unsigned enabled_at_boot:1;
struct regulator_init_data *init_data;
};
diff --git a/include/linux/regulator/gpio-regulator.h b/include/linux/regulator/gpio-regulator.h
index 536cab86f2d5..4f3cc1a73ade 100644
--- a/include/linux/regulator/gpio-regulator.h
+++ b/include/linux/regulator/gpio-regulator.h
@@ -44,8 +44,6 @@ struct gpio_regulator_state {
/**
* struct gpio_regulator_config - config structure
* @supply_name: Name of the regulator supply
- * @enable_high: Polarity of enable GPIO
- * 1 = Active high, 0 = Active low
* @enabled_at_boot: Whether regulator has been enabled at
* boot or not. 1 = Yes, 0 = No
* This is used to keep the regulator at
@@ -67,7 +65,6 @@ struct gpio_regulator_state {
struct gpio_regulator_config {
const char *supply_name;
- unsigned enable_high:1;
unsigned enabled_at_boot:1;
unsigned startup_delay;
--
2.14.3
^ permalink raw reply related [flat|nested] 43+ messages in thread
* [PATCH 16/18 v2] regulator: fixed/gpio: Update device tree bindings
2018-04-22 23:07 [PATCH 01/18 v2] regulator: fixed: Convert to use GPIO descriptor only Linus Walleij
` (13 preceding siblings ...)
2018-04-22 23:07 ` [PATCH 15/18 v2] regulator: fixed/gpio: Pull inversion/OD into gpiolib Linus Walleij
@ 2018-04-22 23:07 ` Linus Walleij
2018-04-22 23:07 ` [PATCH 17/18 v2] regulator: gpio: Convert to fully use descriptors Linus Walleij
2018-04-22 23:07 ` [PATCH 18/18 v2] regulator: gpio: Simplify probe path Linus Walleij
16 siblings, 0 replies; 43+ messages in thread
From: Linus Walleij @ 2018-04-22 23:07 UTC (permalink / raw)
To: Liam Girdwood, Mark Brown; +Cc: linux-kernel, Linus Walleij, devicetree
Deprecate the open drain binding for fixed regulator and indicate
that we prefer this to be passed in the GPIO phandle flags.
Clarify that the line inversion semantics for fixed and GPIO
regulators completely overrides the active low flags in the
phandle flags.
Unfortunately this can not be changed to prefer that we pass
the flags in the phandle: the bindings have been specified and
deployed such that the presence/absence of this flag and only
that controls the line inversion semantics. The crucial semantic
is that the absence of the flag means the core will assume
the line is active low, which in GPIO terms is an exception,
as GPIO lines are normally assumed to be active high.
This special device tree semantic cannot be changed without
introducing a whole new compatible string for the fixed and
GPIO regulators, so we just contain the situation.
Cc: devicetree@vger.kernel.org
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- Collect Rob's ACK.
---
.../devicetree/bindings/regulator/fixed-regulator.txt | 13 +++++++++++--
.../devicetree/bindings/regulator/gpio-regulator.txt | 4 ++++
2 files changed, 15 insertions(+), 2 deletions(-)
diff --git a/Documentation/devicetree/bindings/regulator/fixed-regulator.txt b/Documentation/devicetree/bindings/regulator/fixed-regulator.txt
index 0c2a6c8a1536..a7a1cd0dfa6e 100644
--- a/Documentation/devicetree/bindings/regulator/fixed-regulator.txt
+++ b/Documentation/devicetree/bindings/regulator/fixed-regulator.txt
@@ -8,10 +8,19 @@ Optional properties:
- gpio: gpio to use for enable control
- startup-delay-us: startup time in microseconds
- enable-active-high: Polarity of GPIO is Active high
-If this property is missing, the default assumed is Active low.
+ If this property is missing, the default assumed is Active low.
+ If the phandle flags to the GPIO handle also flag the line as active
+ low or high, that will be ignored for fixed regulators and the
+ presence or absence of this flag solely controls the inversion
+ semantics.
+-vin-supply: Input supply name.
+
+Deprecated properties:
- gpio-open-drain: GPIO is open drain type.
If this property is missing then default assumption is false.
--vin-supply: Input supply name.
+ Do not use this property in new device trees: instead use the
+ phandle flag to indicate to the GPIO provider that the line
+ should be handled as open drain.
Any property defined as part of the core regulator
binding, defined in regulator.txt, can also be used.
diff --git a/Documentation/devicetree/bindings/regulator/gpio-regulator.txt b/Documentation/devicetree/bindings/regulator/gpio-regulator.txt
index 1f496159e2bb..8fef3e5358a2 100644
--- a/Documentation/devicetree/bindings/regulator/gpio-regulator.txt
+++ b/Documentation/devicetree/bindings/regulator/gpio-regulator.txt
@@ -14,6 +14,10 @@ Optional properties:
defualt is LOW if nothing is specified.
- startup-delay-us : Startup time in microseconds.
- enable-active-high : Polarity of GPIO is active high (default is low).
+ If the phandle flags to the GPIO handle also flag the line as
+ active low or high, that will be ignored for fixed regulators
+ and the presence or absence of this flag solely controls the
+ inversion semantics.
- regulator-type : Specifies what is being regulated, must be either
"voltage" or "current", defaults to voltage.
--
2.14.3
^ permalink raw reply related [flat|nested] 43+ messages in thread
* [PATCH 17/18 v2] regulator: gpio: Convert to fully use descriptors
2018-04-22 23:07 [PATCH 01/18 v2] regulator: fixed: Convert to use GPIO descriptor only Linus Walleij
` (14 preceding siblings ...)
2018-04-22 23:07 ` [PATCH 16/18 v2] regulator: fixed/gpio: Update device tree bindings Linus Walleij
@ 2018-04-22 23:07 ` Linus Walleij
2018-04-22 23:07 ` [PATCH 18/18 v2] regulator: gpio: Simplify probe path Linus Walleij
16 siblings, 0 replies; 43+ messages in thread
From: Linus Walleij @ 2018-04-22 23:07 UTC (permalink / raw)
To: Liam Girdwood, Mark Brown; +Cc: linux-kernel, Linus Walleij
This converts the GPIO regulator driver to use decriptors only.
We have to let go of the array gpio handling: the fetched descriptors
are handled individually anyway, and the array retrieveal function
does not make it possible to retrieve each GPIO descriptor with
unique flags. Instead get them one by one.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- Rebase the patch on the other changes.
---
arch/arm/mach-pxa/hx4700.c | 10 +--
arch/arm/mach-pxa/magician.c | 11 +--
drivers/regulator/gpio-regulator.c | 113 +++++++++++--------------------
include/linux/regulator/gpio-regulator.h | 12 ++--
4 files changed, 56 insertions(+), 90 deletions(-)
diff --git a/arch/arm/mach-pxa/hx4700.c b/arch/arm/mach-pxa/hx4700.c
index 05148016c620..24ba230340d8 100644
--- a/arch/arm/mach-pxa/hx4700.c
+++ b/arch/arm/mach-pxa/hx4700.c
@@ -700,9 +700,7 @@ static struct regulator_init_data bq24022_init_data = {
.consumer_supplies = bq24022_consumers,
};
-static struct gpio bq24022_gpios[] = {
- { GPIO96_HX4700_BQ24022_ISET2, GPIOF_OUT_INIT_LOW, "bq24022_iset2" },
-};
+static enum gpiod_flags bq24022_gpiod_gflags[] = { GPIOD_OUT_LOW };
static struct gpio_regulator_state bq24022_states[] = {
{ .value = 100000, .gpios = (0 << 0) },
@@ -714,8 +712,8 @@ static struct gpio_regulator_config bq24022_info = {
.enabled_at_boot = 0,
- .gpios = bq24022_gpios,
- .nr_gpios = ARRAY_SIZE(bq24022_gpios),
+ .gflags = bq24022_gpiod_gflags,
+ .ngpios = ARRAY_SIZE(bq24022_gpiod_gflags),
.states = bq24022_states,
.nr_states = ARRAY_SIZE(bq24022_states),
@@ -735,6 +733,8 @@ static struct platform_device bq24022 = {
static struct gpiod_lookup_table bq24022_gpiod_table = {
.dev_id = "gpio-regulator",
.table = {
+ GPIO_LOOKUP("gpio-pxa", GPIO96_HX4700_BQ24022_ISET2,
+ NULL, GPIO_ACTIVE_HIGH),
GPIO_LOOKUP("gpio-pxa", GPIO72_HX4700_BQ24022_nCHARGE_EN,
"enable", GPIO_ACTIVE_LOW),
{ },
diff --git a/arch/arm/mach-pxa/magician.c b/arch/arm/mach-pxa/magician.c
index fab63c52d50e..5d21de79135b 100644
--- a/arch/arm/mach-pxa/magician.c
+++ b/arch/arm/mach-pxa/magician.c
@@ -645,9 +645,8 @@ static struct regulator_init_data bq24022_init_data = {
.consumer_supplies = bq24022_consumers,
};
-static struct gpio bq24022_gpios[] = {
- { EGPIO_MAGICIAN_BQ24022_ISET2, GPIOF_OUT_INIT_LOW, "bq24022_iset2" },
-};
+
+static enum gpiod_flags bq24022_gpiod_gflags[] = { GPIOD_OUT_LOW };
static struct gpio_regulator_state bq24022_states[] = {
{ .value = 100000, .gpios = (0 << 0) },
@@ -659,8 +658,8 @@ static struct gpio_regulator_config bq24022_info = {
.enabled_at_boot = 1,
- .gpios = bq24022_gpios,
- .nr_gpios = ARRAY_SIZE(bq24022_gpios),
+ .gflags = bq24022_gpiod_gflags,
+ .ngpios = ARRAY_SIZE(bq24022_gpiod_gflags),
.states = bq24022_states,
.nr_states = ARRAY_SIZE(bq24022_states),
@@ -680,6 +679,8 @@ static struct platform_device bq24022 = {
static struct gpiod_lookup_table bq24022_gpiod_table = {
.dev_id = "gpio-regulator",
.table = {
+ GPIO_LOOKUP("gpio-pxa", EGPIO_MAGICIAN_BQ24022_ISET2,
+ NULL, GPIO_ACTIVE_HIGH),
GPIO_LOOKUP("gpio-pxa", GPIO30_MAGICIAN_BQ24022_nCHARGE_EN,
"enable", GPIO_ACTIVE_LOW),
{ },
diff --git a/drivers/regulator/gpio-regulator.c b/drivers/regulator/gpio-regulator.c
index 16ef08406739..756b7b50ffba 100644
--- a/drivers/regulator/gpio-regulator.c
+++ b/drivers/regulator/gpio-regulator.c
@@ -30,17 +30,15 @@
#include <linux/regulator/machine.h>
#include <linux/regulator/of_regulator.h>
#include <linux/regulator/gpio-regulator.h>
-#include <linux/gpio.h>
#include <linux/gpio/consumer.h>
#include <linux/slab.h>
#include <linux/of.h>
-#include <linux/of_gpio.h>
struct gpio_regulator_data {
struct regulator_desc desc;
struct regulator_dev *dev;
- struct gpio *gpios;
+ struct gpio_desc **gpiods;
int nr_gpios;
struct gpio_regulator_state *states;
@@ -83,7 +81,7 @@ static int gpio_regulator_set_voltage(struct regulator_dev *dev,
for (ptr = 0; ptr < data->nr_gpios; ptr++) {
state = (target & (1 << ptr)) >> ptr;
- gpio_set_value_cansleep(data->gpios[ptr].gpio, state);
+ gpiod_set_value_cansleep(data->gpiods[ptr], state);
}
data->state = target;
@@ -120,7 +118,7 @@ static int gpio_regulator_set_current_limit(struct regulator_dev *dev,
for (ptr = 0; ptr < data->nr_gpios; ptr++) {
state = (target & (1 << ptr)) >> ptr;
- gpio_set_value_cansleep(data->gpios[ptr].gpio, state);
+ gpiod_set_value_cansleep(data->gpiods[ptr], state);
}
data->state = target;
@@ -139,7 +137,8 @@ of_get_gpio_regulator_config(struct device *dev, struct device_node *np,
{
struct gpio_regulator_config *config;
const char *regtype;
- int proplen, gpio, i;
+ int proplen, i;
+ int ngpios;
int ret;
config = devm_kzalloc(dev,
@@ -159,47 +158,31 @@ of_get_gpio_regulator_config(struct device *dev, struct device_node *np,
of_property_read_u32(np, "startup-delay-us", &config->startup_delay);
- /* Fetch GPIOs. - optional property*/
- ret = of_gpio_count(np);
- if ((ret < 0) && (ret != -ENOENT))
- return ERR_PTR(ret);
-
- if (ret > 0) {
- config->nr_gpios = ret;
- config->gpios = devm_kzalloc(dev,
- sizeof(struct gpio) * config->nr_gpios,
- GFP_KERNEL);
- if (!config->gpios)
+ /* Fetch GPIO init levels */
+ ngpios = gpiod_count(dev, NULL);
+ if (ngpios > 0) {
+ config->gflags = devm_kzalloc(dev,
+ sizeof(enum gpiod_flags)
+ * ngpios,
+ GFP_KERNEL);
+ if (!config->gflags)
return ERR_PTR(-ENOMEM);
- proplen = of_property_count_u32_elems(np, "gpios-states");
- /* optional property */
- if (proplen < 0)
- proplen = 0;
+ for (i = 0; i < ngpios; i++) {
+ u32 val;
- if (proplen > 0 && proplen != config->nr_gpios) {
- dev_warn(dev, "gpios <-> gpios-states mismatch\n");
- proplen = 0;
- }
+ ret = of_property_read_u32_index(np, "gpios-states", i,
+ &val);
- for (i = 0; i < config->nr_gpios; i++) {
- gpio = of_get_named_gpio(np, "gpios", i);
- if (gpio < 0) {
- if (gpio != -ENOENT)
- return ERR_PTR(gpio);
- break;
- }
- config->gpios[i].gpio = gpio;
- config->gpios[i].label = config->supply_name;
- if (proplen > 0) {
- of_property_read_u32_index(np, "gpios-states",
- i, &ret);
- if (ret)
- config->gpios[i].flags =
- GPIOF_OUT_INIT_HIGH;
- }
+ /* Default to high per specification */
+ if (ret)
+ config->gflags[i] = GPIOD_OUT_HIGH;
+ else
+ config->gflags[i] =
+ val ? GPIOD_OUT_HIGH : GPIOD_OUT_LOW;
}
}
+ config->ngpios = ngpios;
/* Fetch states. */
proplen = of_property_count_u32_elems(np, "states");
@@ -250,7 +233,7 @@ static int gpio_regulator_probe(struct platform_device *pdev)
struct gpio_regulator_data *drvdata;
struct regulator_config cfg = { };
enum gpiod_flags gflags;
- int ptr, ret, state;
+ int ptr, ret, state, i;
drvdata = devm_kzalloc(&pdev->dev, sizeof(struct gpio_regulator_data),
GFP_KERNEL);
@@ -264,33 +247,22 @@ static int gpio_regulator_probe(struct platform_device *pdev)
return PTR_ERR(config);
}
+ for (i = 0; i < config->ngpios; i++) {
+ drvdata->gpiods[i] = devm_gpiod_get_index(&pdev->dev,
+ config->supply_name,
+ i,
+ config->gflags[i]);
+ if (IS_ERR(drvdata->gpiods[i]))
+ return PTR_ERR(drvdata->gpiods[i]);
+ }
+ drvdata->nr_gpios = config->ngpios;
+
drvdata->desc.name = kstrdup(config->supply_name, GFP_KERNEL);
if (drvdata->desc.name == NULL) {
dev_err(&pdev->dev, "Failed to allocate supply name\n");
return -ENOMEM;
}
- if (config->nr_gpios != 0) {
- drvdata->gpios = kmemdup(config->gpios,
- config->nr_gpios * sizeof(struct gpio),
- GFP_KERNEL);
- if (drvdata->gpios == NULL) {
- dev_err(&pdev->dev, "Failed to allocate gpio data\n");
- ret = -ENOMEM;
- goto err_name;
- }
-
- drvdata->nr_gpios = config->nr_gpios;
- ret = gpio_request_array(drvdata->gpios, drvdata->nr_gpios);
- if (ret) {
- if (ret != -EPROBE_DEFER)
- dev_err(&pdev->dev,
- "Could not obtain regulator setting GPIOs: %d\n",
- ret);
- goto err_memgpio;
- }
- }
-
drvdata->states = kmemdup(config->states,
config->nr_states *
sizeof(struct gpio_regulator_state),
@@ -298,7 +270,7 @@ static int gpio_regulator_probe(struct platform_device *pdev)
if (drvdata->states == NULL) {
dev_err(&pdev->dev, "Failed to allocate state data\n");
ret = -ENOMEM;
- goto err_stategpio;
+ goto err_name;
}
drvdata->nr_states = config->nr_states;
@@ -325,7 +297,7 @@ static int gpio_regulator_probe(struct platform_device *pdev)
/* build initial state from gpio init data. */
state = 0;
for (ptr = 0; ptr < drvdata->nr_gpios; ptr++) {
- if (config->gpios[ptr].flags & GPIOF_OUT_INIT_HIGH)
+ if (config->gflags[ptr] == GPIOD_OUT_HIGH)
state |= (1 << ptr);
}
drvdata->state = state;
@@ -347,7 +319,7 @@ static int gpio_regulator_probe(struct platform_device *pdev)
cfg.ena_gpiod = devm_gpiod_get_optional(&pdev->dev, "enable", gflags);
if (IS_ERR(cfg.ena_gpiod)) {
ret = PTR_ERR(cfg.ena_gpiod);
- goto err_stategpio;
+ goto err_memstate;
}
drvdata->dev = regulator_register(&drvdata->desc, &cfg);
@@ -363,10 +335,6 @@ static int gpio_regulator_probe(struct platform_device *pdev)
err_memstate:
kfree(drvdata->states);
-err_stategpio:
- gpio_free_array(drvdata->gpios, drvdata->nr_gpios);
-err_memgpio:
- kfree(drvdata->gpios);
err_name:
kfree(drvdata->desc.name);
return ret;
@@ -377,12 +345,7 @@ static int gpio_regulator_remove(struct platform_device *pdev)
struct gpio_regulator_data *drvdata = platform_get_drvdata(pdev);
regulator_unregister(drvdata->dev);
-
- gpio_free_array(drvdata->gpios, drvdata->nr_gpios);
-
kfree(drvdata->states);
- kfree(drvdata->gpios);
-
kfree(drvdata->desc.name);
return 0;
diff --git a/include/linux/regulator/gpio-regulator.h b/include/linux/regulator/gpio-regulator.h
index 4f3cc1a73ade..11cd6375215d 100644
--- a/include/linux/regulator/gpio-regulator.h
+++ b/include/linux/regulator/gpio-regulator.h
@@ -21,6 +21,8 @@
#ifndef __REGULATOR_GPIO_H
#define __REGULATOR_GPIO_H
+#include <linux/gpio/consumer.h>
+
struct regulator_init_data;
enum regulator_type;
@@ -49,9 +51,9 @@ struct gpio_regulator_state {
* This is used to keep the regulator at
* the default state
* @startup_delay: Start-up time in microseconds
- * @gpios: Array containing the gpios needed to control
- * the setting of the regulator
- * @nr_gpios: Number of gpios
+ * @gflags: Array of GPIO configuration flags for initial
+ * states
+ * @ngpios: Number of GPIOs and configurations available
* @states: Array of gpio_regulator_state entries describing
* the gpio state for specific voltages
* @nr_states: Number of states available
@@ -68,8 +70,8 @@ struct gpio_regulator_config {
unsigned enabled_at_boot:1;
unsigned startup_delay;
- struct gpio *gpios;
- int nr_gpios;
+ enum gpiod_flags *gflags;
+ int ngpios;
struct gpio_regulator_state *states;
int nr_states;
--
2.14.3
^ permalink raw reply related [flat|nested] 43+ messages in thread
* [PATCH 18/18 v2] regulator: gpio: Simplify probe path
2018-04-22 23:07 [PATCH 01/18 v2] regulator: fixed: Convert to use GPIO descriptor only Linus Walleij
` (15 preceding siblings ...)
2018-04-22 23:07 ` [PATCH 17/18 v2] regulator: gpio: Convert to fully use descriptors Linus Walleij
@ 2018-04-22 23:07 ` Linus Walleij
16 siblings, 0 replies; 43+ messages in thread
From: Linus Walleij @ 2018-04-22 23:07 UTC (permalink / raw)
To: Liam Girdwood, Mark Brown; +Cc: linux-kernel, Linus Walleij
Use devm_* managed device resources and create a local
struct device *dev variable to simplify the code inside
probe().
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2:
- Rebase the patch on the other changes.
---
drivers/regulator/gpio-regulator.c | 56 ++++++++++++++++----------------------
1 file changed, 23 insertions(+), 33 deletions(-)
diff --git a/drivers/regulator/gpio-regulator.c b/drivers/regulator/gpio-regulator.c
index 756b7b50ffba..e4b573bf8b99 100644
--- a/drivers/regulator/gpio-regulator.c
+++ b/drivers/regulator/gpio-regulator.c
@@ -228,27 +228,28 @@ static struct regulator_ops gpio_regulator_current_ops = {
static int gpio_regulator_probe(struct platform_device *pdev)
{
- struct gpio_regulator_config *config = dev_get_platdata(&pdev->dev);
- struct device_node *np = pdev->dev.of_node;
+ struct device *dev = &pdev->dev;
+ struct gpio_regulator_config *config = dev_get_platdata(dev);
+ struct device_node *np = dev->of_node;
struct gpio_regulator_data *drvdata;
struct regulator_config cfg = { };
enum gpiod_flags gflags;
int ptr, ret, state, i;
- drvdata = devm_kzalloc(&pdev->dev, sizeof(struct gpio_regulator_data),
+ drvdata = devm_kzalloc(dev, sizeof(struct gpio_regulator_data),
GFP_KERNEL);
if (drvdata == NULL)
return -ENOMEM;
if (np) {
- config = of_get_gpio_regulator_config(&pdev->dev, np,
+ config = of_get_gpio_regulator_config(dev, np,
&drvdata->desc);
if (IS_ERR(config))
return PTR_ERR(config);
}
for (i = 0; i < config->ngpios; i++) {
- drvdata->gpiods[i] = devm_gpiod_get_index(&pdev->dev,
+ drvdata->gpiods[i] = devm_gpiod_get_index(dev,
config->supply_name,
i,
config->gflags[i]);
@@ -257,20 +258,20 @@ static int gpio_regulator_probe(struct platform_device *pdev)
}
drvdata->nr_gpios = config->ngpios;
- drvdata->desc.name = kstrdup(config->supply_name, GFP_KERNEL);
+ drvdata->desc.name = devm_kstrdup(dev, config->supply_name, GFP_KERNEL);
if (drvdata->desc.name == NULL) {
- dev_err(&pdev->dev, "Failed to allocate supply name\n");
+ dev_err(dev, "Failed to allocate supply name\n");
return -ENOMEM;
}
- drvdata->states = kmemdup(config->states,
- config->nr_states *
- sizeof(struct gpio_regulator_state),
- GFP_KERNEL);
+ drvdata->states = devm_kmemdup(dev,
+ config->states,
+ config->nr_states *
+ sizeof(struct gpio_regulator_state),
+ GFP_KERNEL);
if (drvdata->states == NULL) {
- dev_err(&pdev->dev, "Failed to allocate state data\n");
- ret = -ENOMEM;
- goto err_name;
+ dev_err(dev, "Failed to allocate state data\n");
+ return -ENOMEM;
}
drvdata->nr_states = config->nr_states;
@@ -289,9 +290,8 @@ static int gpio_regulator_probe(struct platform_device *pdev)
drvdata->desc.ops = &gpio_regulator_current_ops;
break;
default:
- dev_err(&pdev->dev, "No regulator type set\n");
- ret = -EINVAL;
- goto err_memstate;
+ dev_err(dev, "No regulator type set\n");
+ return -EINVAL;
}
/* build initial state from gpio init data. */
@@ -302,7 +302,7 @@ static int gpio_regulator_probe(struct platform_device *pdev)
}
drvdata->state = state;
- cfg.dev = &pdev->dev;
+ cfg.dev = dev;
cfg.init_data = config->init_data;
cfg.driver_data = drvdata;
cfg.of_node = np;
@@ -316,28 +316,20 @@ static int gpio_regulator_probe(struct platform_device *pdev)
else
gflags = GPIOD_OUT_LOW;
- cfg.ena_gpiod = devm_gpiod_get_optional(&pdev->dev, "enable", gflags);
- if (IS_ERR(cfg.ena_gpiod)) {
- ret = PTR_ERR(cfg.ena_gpiod);
- goto err_memstate;
- }
+ cfg.ena_gpiod = devm_gpiod_get_optional(dev, "enable", gflags);
+ if (IS_ERR(cfg.ena_gpiod))
+ return PTR_ERR(cfg.ena_gpiod);
drvdata->dev = regulator_register(&drvdata->desc, &cfg);
if (IS_ERR(drvdata->dev)) {
ret = PTR_ERR(drvdata->dev);
- dev_err(&pdev->dev, "Failed to register regulator: %d\n", ret);
- goto err_memstate;
+ dev_err(dev, "Failed to register regulator: %d\n", ret);
+ return ret;
}
platform_set_drvdata(pdev, drvdata);
return 0;
-
-err_memstate:
- kfree(drvdata->states);
-err_name:
- kfree(drvdata->desc.name);
- return ret;
}
static int gpio_regulator_remove(struct platform_device *pdev)
@@ -345,8 +337,6 @@ static int gpio_regulator_remove(struct platform_device *pdev)
struct gpio_regulator_data *drvdata = platform_get_drvdata(pdev);
regulator_unregister(drvdata->dev);
- kfree(drvdata->states);
- kfree(drvdata->desc.name);
return 0;
}
--
2.14.3
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