diff options
| -rw-r--r-- | arch/arm/mach-pxa/em-x270.c | 97 |
1 files changed, 81 insertions, 16 deletions
diff --git a/arch/arm/mach-pxa/em-x270.c b/arch/arm/mach-pxa/em-x270.c index 1aaae97de7d3..05f9e9e1224b 100644 --- a/arch/arm/mach-pxa/em-x270.c +++ b/arch/arm/mach-pxa/em-x270.c @@ -43,12 +43,12 @@ #include <mach/pxa2xx_spi.h> #include "generic.h" +#include "devices.h" /* GPIO IRQ usage */ #define GPIO41_ETHIRQ (41) #define GPIO13_MMC_CD (13) #define EM_X270_ETHIRQ IRQ_GPIO(GPIO41_ETHIRQ) -#define EM_X270_MMC_CD IRQ_GPIO(GPIO13_MMC_CD) /* NAND control GPIOs */ #define GPIO11_NAND_CS (11) @@ -56,6 +56,7 @@ /* Miscelaneous GPIOs */ #define GPIO93_CAM_RESET (93) +#define GPIO95_MMC_WP (95) static unsigned long em_x270_pin_config[] = { /* AC'97 */ @@ -163,7 +164,8 @@ static unsigned long em_x270_pin_config[] = { GPIO18_RDY, /* GPIO */ - GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH, + GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH, /* sleep/resume button */ + GPIO95_GPIO, /* MMC Write protect */ /* power controls */ GPIO20_GPIO | MFP_LPM_DRIVE_LOW, /* GPRS_PWEN */ @@ -464,47 +466,86 @@ static inline void em_x270_init_ohci(void) {} /* MCI controller setup */ #if defined(CONFIG_MMC) || defined(CONFIG_MMC_MODULE) +static struct regulator *em_x270_sdio_ldo; + static int em_x270_mci_init(struct device *dev, irq_handler_t em_x270_detect_int, void *data) { - int err = request_irq(EM_X270_MMC_CD, em_x270_detect_int, - IRQF_DISABLED | IRQF_TRIGGER_FALLING, + int err; + + em_x270_sdio_ldo = regulator_get(dev, "vcc sdio"); + if (IS_ERR(em_x270_sdio_ldo)) { + dev_err(dev, "can't request SDIO power supply: %ld\n", + PTR_ERR(em_x270_sdio_ldo)); + return PTR_ERR(em_x270_sdio_ldo); + } + + err = request_irq(gpio_to_irq(GPIO13_MMC_CD), em_x270_detect_int, + IRQF_DISABLED | IRQF_TRIGGER_RISING | + IRQF_TRIGGER_FALLING, "MMC card detect", data); if (err) { - printk(KERN_ERR "%s: can't request MMC card detect IRQ: %d\n", - __func__, err); - return err; + dev_err(dev, "can't request MMC card detect IRQ: %d\n", err); + goto err_irq; + } + + err = gpio_request(GPIO95_MMC_WP, "MMC WP"); + if (err) { + dev_err(dev, "can't request MMC write protect: %d\n", err); + goto err_gpio_wp; } + gpio_direction_input(GPIO95_MMC_WP); + return 0; + +err_gpio_wp: + free_irq(gpio_to_irq(GPIO13_MMC_CD), data); +err_irq: + regulator_put(em_x270_sdio_ldo); + + return err; } static void em_x270_mci_setpower(struct device *dev, unsigned int vdd) { - /* - FIXME: current hardware implementation does not allow to - enable/disable MMC power. This will be fixed in next HW releases, - and we'll need to add implmentation here. - */ - return; + struct pxamci_platform_data* p_d = dev->platform_data; + + if ((1 << vdd) & p_d->ocr_mask) { + int vdd_uV = (2000 + (vdd - __ffs(MMC_VDD_20_21)) * 100) * 1000; + + regulator_set_voltage(em_x270_sdio_ldo, vdd_uV, vdd_uV); + regulator_enable(em_x270_sdio_ldo); + } else { + regulator_disable(em_x270_sdio_ldo); + } } static void em_x270_mci_exit(struct device *dev, void *data) { - int irq = gpio_to_irq(GPIO13_MMC_CD); - free_irq(irq, data); + free_irq(gpio_to_irq(GPIO13_MMC_CD), data); +} + +static int em_x270_mci_get_ro(struct device *dev) +{ + return gpio_get_value(GPIO95_MMC_WP); } static struct pxamci_platform_data em_x270_mci_platform_data = { - .ocr_mask = MMC_VDD_28_29|MMC_VDD_29_30|MMC_VDD_30_31, + .ocr_mask = MMC_VDD_20_21|MMC_VDD_21_22|MMC_VDD_22_23| + MMC_VDD_24_25|MMC_VDD_25_26|MMC_VDD_26_27| + MMC_VDD_27_28|MMC_VDD_28_29|MMC_VDD_29_30| + MMC_VDD_30_31|MMC_VDD_31_32, .init = em_x270_mci_init, .setpower = em_x270_mci_setpower, + .get_ro = em_x270_mci_get_ro, .exit = em_x270_mci_exit, }; static void __init em_x270_init_mmc(void) { + em_x270_mci_platform_data.detect_delay = msecs_to_jiffies(250); pxa_set_mci_info(&em_x270_mci_platform_data); } #else @@ -757,6 +798,13 @@ static struct regulator_consumer_supply ldo5_consumers[] = { }, }; +static struct regulator_consumer_supply ldo10_consumers[] = { + { + .dev = &pxa_device_mci.dev, + .supply = "vcc sdio", + }, +}; + static struct regulator_consumer_supply ldo12_consumers[] = { { .dev = NULL, @@ -795,6 +843,19 @@ static struct regulator_init_data ldo5_data = { .consumer_supplies = ldo5_consumers, }; +static struct regulator_init_data ldo10_data = { + .constraints = { + .min_uV = 2000000, + .max_uV = 3200000, + .state_mem = { + .enabled = 0, + }, + .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE | REGULATOR_CHANGE_STATUS, + }, + .num_consumer_supplies = ARRAY_SIZE(ldo10_consumers), + .consumer_supplies = ldo10_consumers, +}; + static struct regulator_init_data ldo12_data = { .constraints = { .min_uV = 3000000, @@ -835,6 +896,10 @@ struct da903x_subdev_info em_x270_da9030_subdevs[] = { .platform_data = &ldo5_data, }, { .name = "da903x-regulator", + .id = DA9030_ID_LDO10, + .platform_data = &ldo10_data, + }, { + .name = "da903x-regulator", .id = DA9030_ID_LDO12, .platform_data = &ldo12_data, }, { |
