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authorLinus Walleij <linus.walleij@linaro.org>2019-01-29 11:31:52 +0100
committerMark Brown <broonie@kernel.org>2019-02-06 15:58:15 +0000
commitd6cd33ad71029a3f77ba1686caf55d4dea58d916 (patch)
treec487971ab5c2bf8709c572b45187339ab29108ce /arch/arm/mach-pxa
parent4f297062b288e9434280dd3a2f0ba7424d7a7224 (diff)
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 <p.zabel@pengutronix.de> # Magician Cc: Petr Cvek <petr.cvek@tul.cz> # Magician Cc: Robert Jarzmik <robert.jarzmik@free.fr> # PXA Cc: Paul Parsons <lost.distance@yahoo.com> # hx4700 Cc: Kevin Hilman <khilman@baylibre.com> # Meson Cc: Neil Armstrong <narmstrong@baylibre.com> # Meson Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'arch/arm/mach-pxa')
-rw-r--r--arch/arm/mach-pxa/hx4700.c23
-rw-r--r--arch/arm/mach-pxa/magician.c23
2 files changed, 32 insertions, 14 deletions
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 <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/fb.h>
+#include <linux/gpio/machine.h>
#include <linux/gpio.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
@@ -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));
}