[PATCH 26/26] ARM: shmobile: lager: add gpio/fixed regulator for SDHI

[Simon Horman]

From: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>

Fixed regulator is used for SDHI0/2 Vcc.
We should use da9063 driver for Vccq,
but, it doesn't have regulator support at this point.
This patch uses gpio-regulator for it as quick-hack.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
Signed-off-by: Simon Horman <horms+renesas at verge.net.au>
---
 arch/arm/mach-shmobile/board-lager.c | 83 +++++++++++++++++++++++++++++++++++-
 1 file changed, 82 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-shmobile/board-lager.c b/arch/arm/mach-shmobile/board-lager.c
index 04cb932..267f2b3 100644
--- a/arch/arm/mach-shmobile/board-lager.c
+++ b/arch/arm/mach-shmobile/board-lager.c
@@ -31,7 +31,9 @@
 #include <linux/platform_data/rcar-du.h>
 #include <linux/platform_device.h>
 #include <linux/phy.h>
+#include <linux/regulator/driver.h>
 #include <linux/regulator/fixed.h>
+#include <linux/regulator/gpio-regulator.h>
 #include <linux/regulator/machine.h>
 #include <linux/sh_eth.h>
 #include <mach/common.h>
@@ -146,6 +148,71 @@ static struct regulator_consumer_supply fixed3v3_power_consumers[] =
 	REGULATOR_SUPPLY("vmmc", "sh_mmcif.1"),
 };
 
+/*
+ * SDHI regulator macro
+ *
+ ** FIXME**
+ * Lager board vqmmc is provided via DA9063 PMIC chip,
+ * and we should use ${LINK}/drivers/mfd/da9063-* driver for it.
+ * but, it doesn't have regulator support at this point.
+ * It uses gpio-regulator for vqmmc as quick-hack.
+ */
+#define SDHI_REGULATOR(idx, vdd_pin, vccq_pin)				\
+static struct regulator_consumer_supply vcc_sdhi##idx##_consumer =	\
+	REGULATOR_SUPPLY("vmmc", "sh_mobile_sdhi." #idx);		\
+									\
+static struct regulator_init_data vcc_sdhi##idx##_init_data = {		\
+	.constraints = {						\
+		.valid_ops_mask = REGULATOR_CHANGE_STATUS,		\
+	},								\
+	.consumer_supplies	= &vcc_sdhi##idx##_consumer,		\
+	.num_consumer_supplies	= 1,					\
+};									\
+									\
+static const struct fixed_voltage_config vcc_sdhi##idx##_info __initconst = {\
+	.supply_name	= "SDHI" #idx "Vcc",				\
+	.microvolts	= 3300000,					\
+	.gpio		= vdd_pin,					\
+	.enable_high	= 1,						\
+	.init_data	= &vcc_sdhi##idx##_init_data,			\
+};									\
+									\
+static struct regulator_consumer_supply vccq_sdhi##idx##_consumer =	\
+	REGULATOR_SUPPLY("vqmmc", "sh_mobile_sdhi." #idx);		\
+									\
+static struct regulator_init_data vccq_sdhi##idx##_init_data = {	\
+	.constraints = {						\
+		.input_uV	= 3300000,				\
+		.min_uV		= 1800000,				\
+		.max_uV		= 3300000,				\
+		.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |		\
+				  REGULATOR_CHANGE_STATUS,		\
+	},								\
+	.consumer_supplies	= &vccq_sdhi##idx##_consumer,		\
+	.num_consumer_supplies	= 1,					\
+};									\
+									\
+static struct gpio vccq_sdhi##idx##_gpio =				\
+	{ vccq_pin, GPIOF_OUT_INIT_HIGH, "vccq-sdhi" #idx };		\
+									\
+static struct gpio_regulator_state vccq_sdhi##idx##_states[] = {	\
+	{ .value = 1800000, .gpios = 0 },				\
+	{ .value = 3300000, .gpios = 1 },				\
+};									\
+									\
+static const struct gpio_regulator_config vccq_sdhi##idx##_info __initconst = {\
+	.supply_name	= "vqmmc",					\
+	.gpios		= &vccq_sdhi##idx##_gpio,			\
+	.nr_gpios	= 1,						\
+	.states		= vccq_sdhi##idx##_states,			\
+	.nr_states	= ARRAY_SIZE(vccq_sdhi##idx##_states),		\
+	.type		= REGULATOR_VOLTAGE,				\
+	.init_data	= &vccq_sdhi##idx##_init_data,			\
+};
+
+SDHI_REGULATOR(0, RCAR_GP_PIN(5, 24), RCAR_GP_PIN(5, 29));
+SDHI_REGULATOR(2, RCAR_GP_PIN(5, 25), RCAR_GP_PIN(5, 30));
+
 /* MMCIF */
 static const struct sh_mmcif_plat_data mmcif1_pdata __initconst = {
 	.caps		= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE,
@@ -256,6 +323,9 @@ static const struct pinctrl_map lager_pinctrl_map[] = {
 
 static void __init lager_add_standard_devices(void)
 {
+	int fixed_regulator_idx = 0;
+	int gpio_regulator_idx = 0;
+
 	r8a7790_clock_init();
 
 	pinctrl_register_mappings(lager_pinctrl_map,
@@ -269,7 +339,8 @@ static void __init lager_add_standard_devices(void)
 	platform_device_register_data(&platform_bus, "gpio-keys", -1,
 				      &lager_keys_pdata,
 				      sizeof(lager_keys_pdata));
-	regulator_register_always_on(0, "fixed-3.3V", fixed3v3_power_consumers,
+	regulator_register_always_on(fixed_regulator_idx++,
+				     "fixed-3.3V", fixed3v3_power_consumers,
 				     ARRAY_SIZE(fixed3v3_power_consumers), 3300000);
 	platform_device_register_resndata(&platform_bus, "sh_mmcif", 1,
 					  mmcif1_resources, ARRAY_SIZE(mmcif1_resources),
@@ -287,6 +358,16 @@ static void __init lager_add_standard_devices(void)
 					  ARRAY_SIZE(qspi_resources),
 					  &qspi_pdata, sizeof(qspi_pdata));
 	spi_register_board_info(spi_info, ARRAY_SIZE(spi_info));
+
+	platform_device_register_data(&platform_bus, "reg-fixed-voltage", fixed_regulator_idx++,
+				      &vcc_sdhi0_info, sizeof(struct fixed_voltage_config));
+	platform_device_register_data(&platform_bus, "reg-fixed-voltage", fixed_regulator_idx++,
+				      &vcc_sdhi2_info, sizeof(struct fixed_voltage_config));
+
+	platform_device_register_data(&platform_bus, "gpio-regulator", gpio_regulator_idx++,
+				      &vccq_sdhi0_info, sizeof(struct gpio_regulator_config));
+	platform_device_register_data(&platform_bus, "gpio-regulator", gpio_regulator_idx++,
+				      &vccq_sdhi2_info, sizeof(struct gpio_regulator_config));
 }
 
 /*
-- 
1.8.4