From e45e290a882e2c0dc8ebb7dd21c66a8209d8e3a5 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Mon, 12 Feb 2018 14:16:57 +0100 Subject: regulator: core: Support passing an initialized GPIO enable descriptor We are currently passing a GPIO number from the global GPIO numberspace into the regulator core for handling enable GPIOs. This is not good since it ties into the global GPIO numberspace and uses gpio_to_desc() to overcome this. Start supporting passing an already initialized GPIO descriptor to the core instead: leaf drivers pick their descriptors, associated directly with the device node (or from ACPI or from a board descriptor table) and use that directly without any roundtrip over the global GPIO numberspace. This looks messy since it adds a bunch of extra code in the core, but at the end of the patch series we will delete the handling of the GPIO number and only deal with descriptors so things end up neat. Signed-off-by: Linus Walleij Signed-off-by: Mark Brown --- include/linux/regulator/driver.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index 4c00486b7a78..4fc96cb8e5d7 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -19,6 +19,7 @@ #include #include +struct gpio_desc; struct regmap; struct regulator_dev; struct regulator_config; @@ -387,6 +388,7 @@ struct regulator_desc { * 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_gpio_invert: Sense for GPIO enable control. * @ena_gpio_flags: Flags to use when calling gpio_request_one() */ @@ -399,6 +401,7 @@ struct regulator_config { bool ena_gpio_initialized; int ena_gpio; + struct gpio_desc *ena_gpiod; unsigned int ena_gpio_invert:1; unsigned int ena_gpio_flags; }; -- cgit v1.2.3 From 8d05560d1d011e5a842556efdbd70cc8a21499bb Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Mon, 12 Feb 2018 14:17:00 +0100 Subject: regulator: da9055: Pass descriptor instead of GPIO number When setting up a fixed regulator on the DA9055, pass a descriptor instead of a global GPIO number. This facility is not used in the kernel so we can easily just say that this should be a descriptor if/when put to use. Signed-off-by: Linus Walleij Acked-by: Lee Jones Signed-off-by: Mark Brown --- include/linux/mfd/da9055/pdata.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mfd/da9055/pdata.h b/include/linux/mfd/da9055/pdata.h index 04e092be4b07..1a94fa2ac309 100644 --- a/include/linux/mfd/da9055/pdata.h +++ b/include/linux/mfd/da9055/pdata.h @@ -12,6 +12,7 @@ #define DA9055_MAX_REGULATORS 8 struct da9055; +struct gpio_desc; enum gpio_select { NO_GPIO = 0, @@ -47,7 +48,7 @@ struct da9055_pdata { * controls the regulator set A/B, 0 if not available. */ enum gpio_select *reg_rsel; - /* GPIOs to enable regulator, 0 if not available */ - int *ena_gpio; + /* GPIO descriptors to enable regulator, NULL if not available */ + struct gpio_desc **ena_gpiods; }; #endif /* __DA9055_PDATA_H */ -- cgit v1.2.3 From 11da04af0d3b4c24ab057dd17f54dbc854d735de Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Mon, 12 Feb 2018 14:17:02 +0100 Subject: regulator: da9211: Pass descriptors instead of GPIO numbers This augments the DA9211 regulator driver to fetch its GPIO descriptors directly from the device tree using the newly exported devm_get_gpiod_from_child(). Signed-off-by: Linus Walleij Signed-off-by: Mark Brown --- include/linux/regulator/da9211.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/regulator/da9211.h b/include/linux/regulator/da9211.h index f2fd2d3bf58f..d1f2073e4d5f 100644 --- a/include/linux/regulator/da9211.h +++ b/include/linux/regulator/da9211.h @@ -21,6 +21,8 @@ #define DA9211_MAX_REGULATORS 2 +struct gpio_desc; + enum da9211_chip_id { DA9211, DA9212, @@ -39,7 +41,7 @@ struct da9211_pdata { * 2 : 2 phase 2 buck */ int num_buck; - int gpio_ren[DA9211_MAX_REGULATORS]; + struct gpio_desc *gpiod_ren[DA9211_MAX_REGULATORS]; struct device_node *reg_node[DA9211_MAX_REGULATORS]; struct regulator_init_data *init_data[DA9211_MAX_REGULATORS]; }; -- cgit v1.2.3