From 54ca74ef09a98fcbd77887bb6ff38986ff593955 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Mon, 18 Mar 2013 19:26:44 +0100 Subject: [PATCH] ARM: shmobile: kzm9g: add fixed voltage regulators for SDHI0 and SDHI2 Both SDHI0 and SDHI2 power supplies on kzm9g can be switched on and off. In the current version this is not used and the regulators are hard-wired to "on." This patch switches SDHI0 and SDHI2 to proper fixed-voltage regulators, using GPIOs to enable and disable them. Both ports shall now be specifying the MMC_CAP_POWER_OFF_CARD MMC capability. Only SDHI0 has been tested with an SDIO card, since SDHI2 is a microSD slot. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Simon Horman --- arch/arm/mach-shmobile/board-kzm9g.c | 76 +++++++++++++++++++++++----- 1 file changed, 62 insertions(+), 14 deletions(-) diff --git a/arch/arm/mach-shmobile/board-kzm9g.c b/arch/arm/mach-shmobile/board-kzm9g.c index e924b815c0c8..77a66ac12417 100644 --- a/arch/arm/mach-shmobile/board-kzm9g.c +++ b/arch/arm/mach-shmobile/board-kzm9g.c @@ -375,13 +375,64 @@ static struct platform_device mmc_device = { .resource = sh_mmcif_resources, }; -/* Fixed 3.3V regulators to be used by SDHI0 and SDHI2 */ -static struct regulator_consumer_supply fixed3v3_power_consumers[] = +/* Fixed 3.3V regulators to be used by SDHI0 */ +static struct regulator_consumer_supply vcc_sdhi0_consumers[] = { REGULATOR_SUPPLY("vmmc", "sh_mobile_sdhi.0"), - REGULATOR_SUPPLY("vqmmc", "sh_mobile_sdhi.0"), +}; + +static struct regulator_init_data vcc_sdhi0_init_data = { + .constraints = { + .valid_ops_mask = REGULATOR_CHANGE_STATUS, + }, + .num_consumer_supplies = ARRAY_SIZE(vcc_sdhi0_consumers), + .consumer_supplies = vcc_sdhi0_consumers, +}; + +static struct fixed_voltage_config vcc_sdhi0_info = { + .supply_name = "SDHI0 Vcc", + .microvolts = 3300000, + .gpio = 15, + .enable_high = 1, + .init_data = &vcc_sdhi0_init_data, +}; + +static struct platform_device vcc_sdhi0 = { + .name = "reg-fixed-voltage", + .id = 0, + .dev = { + .platform_data = &vcc_sdhi0_info, + }, +}; + +/* Fixed 3.3V regulators to be used by SDHI2 */ +static struct regulator_consumer_supply vcc_sdhi2_consumers[] = +{ REGULATOR_SUPPLY("vmmc", "sh_mobile_sdhi.2"), - REGULATOR_SUPPLY("vqmmc", "sh_mobile_sdhi.2"), +}; + +static struct regulator_init_data vcc_sdhi2_init_data = { + .constraints = { + .valid_ops_mask = REGULATOR_CHANGE_STATUS, + }, + .num_consumer_supplies = ARRAY_SIZE(vcc_sdhi2_consumers), + .consumer_supplies = vcc_sdhi2_consumers, +}; + +static struct fixed_voltage_config vcc_sdhi2_info = { + .supply_name = "SDHI2 Vcc", + .microvolts = 3300000, + .gpio = 14, + .enable_high = 1, + .init_data = &vcc_sdhi2_init_data, +}; + +static struct platform_device vcc_sdhi2 = { + .name = "reg-fixed-voltage", + .id = 1, + .dev = { + .platform_data = &vcc_sdhi2_info, + }, }; /* SDHI */ @@ -389,7 +440,8 @@ static struct sh_mobile_sdhi_info sdhi0_info = { .dma_slave_tx = SHDMA_SLAVE_SDHI0_TX, .dma_slave_rx = SHDMA_SLAVE_SDHI0_RX, .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT, - .tmio_caps = MMC_CAP_SD_HIGHSPEED, + .tmio_caps = MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ | + MMC_CAP_POWER_OFF_CARD, }; static struct resource sdhi0_resources[] = { @@ -432,7 +484,7 @@ static struct sh_mobile_sdhi_info sdhi2_info = { .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_USE_GPIO_CD | TMIO_MMC_WRPROTECT_DISABLE, - .tmio_caps = MMC_CAP_SD_HIGHSPEED, + .tmio_caps = MMC_CAP_SD_HIGHSPEED | MMC_CAP_POWER_OFF_CARD, .cd_gpio = 13, }; @@ -592,6 +644,8 @@ static struct platform_device *kzm_devices[] __initdata = { &usbhs_device, &lcdc_device, &mmc_device, + &vcc_sdhi0, + &vcc_sdhi2, &sdhi0_device, &sdhi2_device, &gpio_keys_device, @@ -712,11 +766,9 @@ device_initcall(as3711_enable_lcdc_backlight); static void __init kzm_init(void) { - regulator_register_always_on(0, "fixed-1.8V", fixed1v8_power_consumers, + regulator_register_always_on(2, "fixed-1.8V", fixed1v8_power_consumers, ARRAY_SIZE(fixed1v8_power_consumers), 1800000); - regulator_register_always_on(1, "fixed-3.3V", fixed3v3_power_consumers, - ARRAY_SIZE(fixed3v3_power_consumers), 3300000); - regulator_register_fixed(2, dummy_supplies, ARRAY_SIZE(dummy_supplies)); + regulator_register_fixed(3, dummy_supplies, ARRAY_SIZE(dummy_supplies)); pinctrl_register_mappings(kzm_pinctrl_map, ARRAY_SIZE(kzm_pinctrl_map)); @@ -734,10 +786,6 @@ static void __init kzm_init(void) /* enable SD */ gpio_request(GPIO_FN_SDHI0_VCCQ_MC0_ON, NULL); - gpio_request_one(15, GPIOF_OUT_INIT_HIGH, NULL); /* power */ - - /* enable Micro SD */ - gpio_request_one(14, GPIOF_OUT_INIT_HIGH, NULL); /* power */ #ifdef CONFIG_CACHE_L2X0 /* Early BRESP enable, Shared attribute override enable, 64K*8way */ -- GitLab