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authorLee Jones <lee.jones@linaro.org>2013-01-31 11:31:16 +0000
committerLinus Walleij <linus.walleij@linaro.org>2013-02-28 10:20:04 +0100
commit78121166fad90d27ffe6303c6b38a9f6b7ef2d64 (patch)
tree656ee804c6746364bcfe94df1487c8c75d5d795c
parent3c39c259259056182f142a2071269e44bd63cf6a (diff)
downloadlinux-stericsson-78121166fad90d27ffe6303c6b38a9f6b7ef2d64.tar.gz
ARM: ux500: Use the GPIO regulator framework for SDI0's 'en' and 'vsel'
To prevent lots of unnecessary call-backs into platform code, we're now using the GPIO regulator framework to control the 'enable' (en) and 'voltage select' (vsel) GPIO pins which in turn control the MMCI's secondary regulator settings. This already works with Device Tree, but when booting with ATAGs we need to register it as a platform device. Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
-rw-r--r--arch/arm/mach-ux500/board-mop500-regulators.c14
-rw-r--r--arch/arm/mach-ux500/board-mop500-regulators.h1
-rw-r--r--arch/arm/mach-ux500/board-mop500.c44
3 files changed, 59 insertions, 0 deletions
diff --git a/arch/arm/mach-ux500/board-mop500-regulators.c b/arch/arm/mach-ux500/board-mop500-regulators.c
index 2a17bc506cff..cb7540573a85 100644
--- a/arch/arm/mach-ux500/board-mop500-regulators.c
+++ b/arch/arm/mach-ux500/board-mop500-regulators.c
@@ -28,6 +28,20 @@ struct regulator_init_data gpio_en_3v3_regulator = {
.consumer_supplies = gpio_en_3v3_consumers,
};
+static struct regulator_consumer_supply sdi0_reg_consumers[] = {
+ REGULATOR_SUPPLY("vqmmc", "sdi0"),
+};
+
+struct regulator_init_data sdi0_reg_init_data = {
+ .constraints = {
+ .min_uV = 1800000,
+ .max_uV = 2900000,
+ .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE|REGULATOR_CHANGE_STATUS,
+ },
+ .num_consumer_supplies = ARRAY_SIZE(sdi0_reg_consumers),
+ .consumer_supplies = sdi0_reg_consumers,
+};
+
/*
* TPS61052 regulator
*/
diff --git a/arch/arm/mach-ux500/board-mop500-regulators.h b/arch/arm/mach-ux500/board-mop500-regulators.h
index 78a0642a2206..0c79d902f904 100644
--- a/arch/arm/mach-ux500/board-mop500-regulators.h
+++ b/arch/arm/mach-ux500/board-mop500-regulators.h
@@ -19,5 +19,6 @@ ab8500_regulator_reg_init[AB8500_NUM_REGULATOR_REGISTERS];
extern struct regulator_init_data ab8500_regulators[AB8500_NUM_REGULATORS];
extern struct regulator_init_data tps61052_regulator;
extern struct regulator_init_data gpio_en_3v3_regulator;
+extern struct regulator_init_data sdi0_reg_init_data;
#endif
diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c
index d453522edb0d..8f4e00683952 100644
--- a/arch/arm/mach-ux500/board-mop500.c
+++ b/arch/arm/mach-ux500/board-mop500.c
@@ -24,6 +24,8 @@
#include <linux/mfd/abx500/ab8500.h>
#include <linux/regulator/ab8500.h>
#include <linux/regulator/fixed.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/gpio-regulator.h>
#include <linux/mfd/tc3589x.h>
#include <linux/mfd/tps6105x.h>
#include <linux/mfd/abx500/ab8500-gpio.h>
@@ -90,6 +92,37 @@ static struct platform_device snowball_gpio_en_3v3_regulator_dev = {
},
};
+/* Dynamically populated. */
+static struct gpio sdi0_reg_gpios[] = {
+ { 0, GPIOF_OUT_INIT_LOW, "mmci_vsel" },
+};
+
+static struct gpio_regulator_state sdi0_reg_states[] = {
+ { .value = 2900000, .gpios = (0 << 0) },
+ { .value = 1800000, .gpios = (1 << 0) },
+};
+
+static struct gpio_regulator_config sdi0_reg_info = {
+ .supply_name = "ext-mmc-level-shifter",
+ .gpios = sdi0_reg_gpios,
+ .nr_gpios = ARRAY_SIZE(sdi0_reg_gpios),
+ .states = sdi0_reg_states,
+ .nr_states = ARRAY_SIZE(sdi0_reg_states),
+ .type = REGULATOR_VOLTAGE,
+ .enable_high = 1,
+ .enabled_at_boot = 0,
+ .init_data = &sdi0_reg_init_data,
+ .startup_delay = 100,
+};
+
+static struct platform_device sdi0_regulator = {
+ .name = "gpio-regulator",
+ .id = -1,
+ .dev = {
+ .platform_data = &sdi0_reg_info,
+ },
+};
+
static struct ab8500_gpio_platform_data ab8500_gpio_pdata = {
.gpio_base = MOP500_AB8500_PIN_GPIO(1),
.irq_base = MOP500_AB8500_VIR_GPIO_IRQ_BASE,
@@ -500,6 +533,7 @@ static struct hash_platform_data u8500_hash1_platform_data = {
/* add any platform devices here - TODO */
static struct platform_device *mop500_platform_devs[] __initdata = {
&mop500_gpio_keys_device,
+ &sdi0_regulator,
};
#ifdef CONFIG_STE_DMA40
@@ -643,6 +677,7 @@ static struct platform_device *snowball_platform_devs[] __initdata = {
&snowball_gpio_en_3v3_regulator_dev,
&u8500_thsens_device,
&u8500_cpufreq_cooling_device,
+ &sdi0_regulator,
};
static void __init mop500_init_machine(void)
@@ -653,6 +688,9 @@ static void __init mop500_init_machine(void)
mop500_gpio_keys[0].gpio = GPIO_PROX_SENSOR;
+ sdi0_reg_info.enable_gpio = GPIO_SDMMC_EN;
+ sdi0_reg_info.gpios[0].gpio = GPIO_SDMMC_1V8_3V_SEL;
+
mop500_pinmaps_init();
parent = u8500_init_devices(&ab8500_platdata);
@@ -685,6 +723,9 @@ static void __init snowball_init_machine(void)
struct device *parent = NULL;
int i;
+ sdi0_reg_info.enable_gpio = SNOWBALL_SDMMC_EN_GPIO;
+ sdi0_reg_info.gpios[0].gpio = SNOWBALL_SDMMC_1V8_3V_GPIO;
+
snowball_pinmaps_init();
parent = u8500_init_devices(&ab8500_platdata);
@@ -717,6 +758,9 @@ static void __init hrefv60_init_machine(void)
*/
mop500_gpio_keys[0].gpio = HREFV60_PROX_SENSE_GPIO;
+ sdi0_reg_info.enable_gpio = HREFV60_SDMMC_EN_GPIO;
+ sdi0_reg_info.gpios[0].gpio = HREFV60_SDMMC_1V8_3V_GPIO;
+
hrefv60_pinmaps_init();
parent = u8500_init_devices(&ab8500_platdata);