From: Linus Walleij <linus.walleij@linaro.org>
To: Liam Girdwood <lgirdwood@gmail.com>, Mark Brown <broonie@kernel.org>
Cc: linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org,
Linus Walleij <linus.walleij@linaro.org>,
Mikko Perttunen <mperttunen@nvidia.com>,
Laxman Dewangan <ldewangan@nvidia.com>
Subject: [PATCH 07/21] regulator: max8973: Pass descriptor instead of GPIO number
Date: Mon, 12 Feb 2018 14:17:03 +0100 [thread overview]
Message-ID: <20180212131717.27193-8-linus.walleij@linaro.org> (raw)
In-Reply-To: <20180212131717.27193-1-linus.walleij@linaro.org>
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>
---
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
next prev parent reply other threads:[~2018-02-12 13:21 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-12 13:16 [PATCH 00/21] regulator: switch core to GPIO descriptors Linus Walleij
2018-02-12 13:16 ` [PATCH 01/21] regulator: core: Support passing an initialized GPIO enable descriptor Linus Walleij
2018-02-16 17:12 ` Applied "regulator: core: Support passing an initialized GPIO enable descriptor" to the regulator tree Mark Brown
2018-02-12 13:16 ` [PATCH 02/21] regulator: fixed: Convert to use GPIO descriptor only Linus Walleij
2018-02-12 15:13 ` Andy Shevchenko
2018-04-19 12:36 ` Linus Walleij
2018-02-12 13:16 ` [PATCH 03/21] regulator: gpio: Get enable GPIO using GPIO descriptor Linus Walleij
2018-05-29 14:59 ` Applied "regulator: gpio: Get enable GPIO using GPIO descriptor" to the regulator tree Mark Brown
2018-02-12 13:17 ` [PATCH 04/21] regulator: da9055: Pass descriptor instead of GPIO number Linus Walleij
2018-02-12 14:59 ` Lee Jones
2018-02-16 17:12 ` Applied "regulator: da9055: Pass descriptor instead of GPIO number" to the regulator tree Mark Brown
2018-02-12 13:17 ` [PATCH 05/21] regulator: arizona-ldo1: Look up a descriptor and pass to the core Linus Walleij
2018-02-13 11:06 ` Charles Keepax
2018-04-19 13:43 ` Linus Walleij
2018-04-19 15:02 ` Charles Keepax
2018-02-13 11:51 ` Charles Keepax
2018-02-12 13:17 ` [PATCH 06/21] regulator: da9211: Pass descriptors instead of GPIO numbers Linus Walleij
2018-02-16 17:12 ` Applied "regulator: da9211: Pass descriptors instead of GPIO numbers" to the regulator tree Mark Brown
2018-02-12 13:17 ` Linus Walleij [this message]
2018-05-24 19:14 ` Applied "regulator: max8973: Pass descriptor instead of GPIO number" " Mark Brown
2018-02-12 13:17 ` [PATCH 08/21] regulator: max77686: Pass descriptor instead of GPIO number Linus Walleij
2018-02-12 13:37 ` Krzysztof Kozlowski
2018-02-12 13:17 ` [PATCH 09/21] regulator: lm363x: " Linus Walleij
2018-05-24 19:14 ` Applied "regulator: lm363x: Pass descriptor instead of GPIO number" to the regulator tree Mark Brown
2018-02-12 13:17 ` [PATCH 10/21] regulator: lp8788-ldo: Pass descriptor instead of GPIO number Linus Walleij
2018-02-12 14:59 ` Lee Jones
2018-05-24 19:14 ` Applied "regulator: lp8788-ldo: Pass descriptor instead of GPIO number" to the regulator tree Mark Brown
2018-02-12 13:17 ` [PATCH 11/21] regulator: max8952: Pass descriptor instead of GPIO number Linus Walleij
2018-05-24 19:14 ` Applied "regulator: max8952: Pass descriptor instead of GPIO number" to the regulator tree Mark Brown
2018-02-12 13:17 ` [PATCH 12/21] regulator: pfuze100: Delete reference to ena_gpio Linus Walleij
2018-05-24 19:14 ` Applied "regulator: pfuze100: Delete reference to ena_gpio" to the regulator tree Mark Brown
2018-02-12 13:17 ` [PATCH 13/21] regulator: s2mps11: Pass descriptor instead of GPIO number Linus Walleij
2018-05-17 16:41 ` Applied "regulator: s2mps11: Pass descriptor instead of GPIO number" to the regulator tree Mark Brown
2018-02-12 13:17 ` [PATCH 14/21] regulator: s5m8767: Pass descriptor instead of GPIO number Linus Walleij
2018-02-12 14:58 ` Lee Jones
2018-05-24 19:13 ` Applied "regulator: s5m8767: Pass descriptor instead of GPIO number" to the regulator tree Mark Brown
2018-02-12 13:17 ` [PATCH 15/21] regulator: tps65090: Pass descriptor instead of GPIO number Linus Walleij
2018-02-12 14:58 ` Lee Jones
2018-05-24 19:13 ` Applied "regulator: tps65090: Pass descriptor instead of GPIO number" to the regulator tree Mark Brown
2018-02-12 13:17 ` [PATCH 16/21] regulator: wm8994: Pass descriptor instead of GPIO number Linus Walleij
2018-02-12 14:58 ` Lee Jones
2018-02-13 11:11 ` Charles Keepax
2018-04-19 13:55 ` Linus Walleij
2018-04-19 14:05 ` Mark Brown
2018-04-19 15:01 ` [PATCH] ARM: s3c64xx: Tidy up handling of regulator GPIO lookups Charles Keepax
2018-05-14 5:54 ` Linus Walleij
2018-02-13 11:52 ` [PATCH 16/21] regulator: wm8994: Pass descriptor instead of GPIO number Charles Keepax
2018-02-12 13:17 ` [PATCH 17/21] regulator: core: Only support passing enable GPIO descriptors Linus Walleij
2018-02-12 13:17 ` [PATCH 18/21] regulator: fixed/gpio: Pull inversion/OD into gpiolib Linus Walleij
2018-02-17 9:59 ` Robert Jarzmik
2018-02-12 13:17 ` [PATCH 19/21] regulator: fixed/gpio: Update device tree bindings Linus Walleij
2018-02-19 2:41 ` Rob Herring
2018-02-12 13:17 ` [PATCH 20/21] regulator: gpio: Convert to fully use descriptors Linus Walleij
2018-02-12 13:17 ` [PATCH 21/21] regulator: gpio: Simplify probe path Linus Walleij
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