From d6cd33ad71029a3f77ba1686caf55d4dea58d916 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Tue, 29 Jan 2019 11:31:52 +0100 Subject: regulator: gpio: Convert to use descriptors 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. We request the "enable" GPIO separately as before, and make sure that this line is requested as nonexclusive since enable lines can be shared and the regulator core expects this. Most users of the GPIO regulator are using device tree. There are two boards in the kernel using the gpio regulator from a non-devicetree path: PXA hx4700 and magician. Make sure to switch these over to use descriptors as well. Cc: Philipp Zabel # Magician Cc: Petr Cvek # Magician Cc: Robert Jarzmik # PXA Cc: Paul Parsons # hx4700 Cc: Kevin Hilman # Meson Cc: Neil Armstrong # Meson Tested-by: Marek Szyprowski Signed-off-by: Linus Walleij Signed-off-by: Mark Brown --- arch/arm/mach-pxa/hx4700.c | 23 ++++++++++++++++------- arch/arm/mach-pxa/magician.c | 23 ++++++++++++++++------- 2 files changed, 32 insertions(+), 14 deletions(-) (limited to 'arch') diff --git a/arch/arm/mach-pxa/hx4700.c b/arch/arm/mach-pxa/hx4700.c index b79b757fdd41..51d38d5e776a 100644 --- a/arch/arm/mach-pxa/hx4700.c +++ b/arch/arm/mach-pxa/hx4700.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include #include @@ -702,9 +703,7 @@ 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) }, @@ -714,12 +713,10 @@ 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, - .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), @@ -736,6 +733,17 @@ 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), + { }, + }, +}; + /* * StrataFlash */ @@ -878,6 +886,7 @@ 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 08b079653c3f..6538a7c0e504 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) }, @@ -657,12 +656,10 @@ 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, - .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), @@ -679,6 +676,17 @@ 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), + { }, + }, +}; + /* * fixed regulator for ads7846 */ @@ -1027,6 +1035,7 @@ 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)); } -- cgit v1.2.3-59-g8ed1b From 01dc79cd6fe7d25b0eba84009634f5435cbdb4e6 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Tue, 29 Jan 2019 11:31:53 +0100 Subject: regulator: fixed/gpio: Pull inversion/OD into gpiolib 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 especially 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 # i.MX boards user Cc: Haojian Zhuang # MMP2 maintainer Cc: Aaro Koskinen # OMAP1 maintainer Cc: Tony Lindgren # OMAP1,2,3 maintainer Cc: Mike Rapoport # EM-X270 maintainer Cc: Robert Jarzmik # EZX maintainer Cc: Philipp Zabel # Magician maintainer Cc: Petr Cvek # Magician Cc: Robert Jarzmik # PXA Cc: Paul Parsons # hx4700 Cc: Daniel Mack # Raumfeld maintainer Cc: Marc Zyngier # Zeus maintainer Cc: Geert Uytterhoeven # SuperH pinctrl/GPIO maintainer Cc: Russell King # SA1100 Tested-by: Marek Szyprowski Tested-by: Janusz Krzysztofik #OMAP1 Amstrad Delta Signed-off-by: Linus Walleij Signed-off-by: Mark Brown --- 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 | 2 -- 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/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 | 35 +++++----------------- include/linux/regulator/fixed.h | 10 ------- include/linux/regulator/gpio-regulator.h | 6 ---- 17 files changed, 13 insertions(+), 66 deletions(-) (limited to 'arch') diff --git a/arch/arm/mach-imx/mach-mx21ads.c b/arch/arm/mach-imx/mach-mx21ads.c index 2e1e540f2e5a..d278fb672d40 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 f5e04047ed13..6dd7f57c332f 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, NULL, GPIO_ACTIVE_HIGH), + GPIO_LOOKUP("LCD", 0, NULL, GPIO_ACTIVE_LOW), { }, }, }; diff --git a/arch/arm/mach-mmp/brownstone.c b/arch/arm/mach-mmp/brownstone.c index a04e249c654b..d2560fb1e835 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 c4c0a8ea11e4..be30c3c061b4 100644 --- a/arch/arm/mach-omap1/board-ams-delta.c +++ b/arch/arm/mach-omap1/board-ams-delta.c @@ -267,7 +267,6 @@ 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, }; @@ -533,7 +532,6 @@ static struct regulator_init_data keybrd_pwr_initdata = { static struct fixed_voltage_config keybrd_pwr_config = { .supply_name = "keybrd_pwr", .microvolts = 5000000, - .enable_high = 1, .init_data = &keybrd_pwr_initdata, }; diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c index 8a5b6ed4ec36..a2ecc5e69abb 100644 --- a/arch/arm/mach-omap2/pdata-quirks.c +++ b/arch/arm/mach-omap2/pdata-quirks.c @@ -330,7 +330,6 @@ 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 32c1edeb3f14..5ba7bb7f7d51 100644 --- a/arch/arm/mach-pxa/em-x270.c +++ b/arch/arm/mach-pxa/em-x270.c @@ -976,7 +976,6 @@ 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 565965e9acc7..5e110e70ce5a 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, - NULL, GPIO_ACTIVE_HIGH), + NULL, GPIO_ACTIVE_LOW), { }, }, }; diff --git a/arch/arm/mach-pxa/raumfeld.c b/arch/arm/mach-pxa/raumfeld.c index e1db072756f2..e13bfc9b01d2 100644 --- a/arch/arm/mach-pxa/raumfeld.c +++ b/arch/arm/mach-pxa/raumfeld.c @@ -883,7 +883,6 @@ 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 c411f79d4cb5..ebd654302387 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, - NULL, GPIO_ACTIVE_HIGH), + NULL, 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 dfa42496ec27..d09c3f236186 100644 --- a/arch/arm/mach-sa1100/assabet.c +++ b/arch/arm/mach-sa1100/assabet.c @@ -469,7 +469,6 @@ 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 22b4106b8084..5495efa07335 100644 --- a/arch/sh/boards/mach-ecovec24/setup.c +++ b/arch/sh/boards/mach-ecovec24/setup.c @@ -630,7 +630,6 @@ 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, }; @@ -671,7 +670,6 @@ 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 96f438d4b026..1421d5330b2c 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 430a73dea487..1778c5d1b2d0 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -82,7 +82,6 @@ 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; }; /* @@ -2268,7 +2267,6 @@ static int regulator_ena_gpio_request(struct regulator_dev *rdev, } pin->gpiod = gpiod; - pin->ena_gpio_invert = config->ena_gpio_invert; list_add(&pin->list, ®ulator_ena_gpio_list); update_ena_gpio_to_rdev: @@ -2319,8 +2317,7 @@ 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 { @@ -2331,8 +2328,7 @@ 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 588c3d2445cf..417cafe2aba0 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 9abdb9130766..b5afc9db2c61 100644 --- a/drivers/regulator/fixed.c +++ b/drivers/regulator/fixed.c @@ -79,15 +79,6 @@ of_get_fixed_voltage_config(struct device *dev, of_property_read_u32(np, "startup-delay-us", &config->startup_delay); - /* - * FIXME: we pulled active low/high and open drain handling into - * gpiolib so it will be handled there. Delete this in the second - * step when we also remove the custom inversion handling for all - * legacy boardfiles. - */ - config->enable_high = 1; - config->gpio_is_open_drain = 0; - if (of_find_property(np, "vin-supply", NULL)) config->input_supply = "vin"; @@ -151,24 +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; /* * Some fixed regulators share the enable line between two 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 49c407afb944..11cd6375215d 100644 --- a/include/linux/regulator/gpio-regulator.h +++ b/include/linux/regulator/gpio-regulator.h @@ -46,10 +46,6 @@ 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 * boot or not. 1 = Yes, 0 = No * This is used to keep the regulator at @@ -71,8 +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; -- cgit v1.2.3-59-g8ed1b