From 1d2f46814d20a55c45ac171739b6885826e0c793 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Thu, 15 Nov 2018 09:01:18 +0100 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". Cc: patches@opensource.cirrus.com Acked-by: Charles Keepax Acked-by: Lee Jones Signed-off-by: Linus Walleij Signed-off-by: Mark Brown --- arch/arm/mach-s3c64xx/mach-crag6410-module.c | 17 +++++++++++++++-- drivers/mfd/wm8994-core.c | 9 --------- drivers/regulator/wm8994-regulator.c | 20 ++++++++++++-------- include/linux/mfd/wm8994/pdata.h | 3 --- 4 files changed, 27 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 22bd6525e09c..04a177efd245 100644 --- a/drivers/mfd/wm8994-core.c +++ b/drivers/mfd/wm8994-core.c @@ -21,7 +21,6 @@ #include #include #include -#include #include #include #include @@ -306,14 +305,6 @@ static int wm8994_set_pdata_from_of(struct wm8994 *wm8994) pdata->csnaddr_pd = of_property_read_bool(np, "wlf,csnaddr-pd"); - 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..d7fec533c403 100644 --- a/drivers/regulator/wm8994-regulator.c +++ b/drivers/regulator/wm8994-regulator.c @@ -19,7 +19,7 @@ #include #include #include -#include +#include #include #include @@ -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 +146,15 @@ 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 | + GPIOD_FLAGS_BIT_NONEXCLUSIVE); + 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 +163,7 @@ 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 b19c370fe81a..f346167c0e00 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; };