diff options
Diffstat (limited to 'arch/arm/mach-at91/at91sam9260_devices.c')
| -rw-r--r-- | arch/arm/mach-at91/at91sam9260_devices.c | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/at91sam9260_devices.c b/arch/arm/mach-at91/at91sam9260_devices.c index ee4ea0e720c..07eb7b07e44 100644 --- a/arch/arm/mach-at91/at91sam9260_devices.c +++ b/arch/arm/mach-at91/at91sam9260_devices.c @@ -278,6 +278,102 @@ void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) void __init at91_add_device_mmc(short mmc_id, struct at91_mmc_data *data) {} #endif +/* -------------------------------------------------------------------- + * MMC / SD Slot for Atmel MCI Driver + * -------------------------------------------------------------------- */ + +#if defined(CONFIG_MMC_ATMELMCI) || defined(CONFIG_MMC_ATMELMCI_MODULE) +static u64 mmc_dmamask = DMA_BIT_MASK(32); +static struct mci_platform_data mmc_data; + +static struct resource mmc_resources[] = { + [0] = { + .start = AT91SAM9260_BASE_MCI, + .end = AT91SAM9260_BASE_MCI + SZ_16K - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = AT91SAM9260_ID_MCI, + .end = AT91SAM9260_ID_MCI, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device at91sam9260_mmc_device = { + .name = "atmel_mci", + .id = -1, + .dev = { + .dma_mask = &mmc_dmamask, + .coherent_dma_mask = DMA_BIT_MASK(32), + .platform_data = &mmc_data, + }, + .resource = mmc_resources, + .num_resources = ARRAY_SIZE(mmc_resources), +}; + +void __init at91_add_device_mci(short mmc_id, struct mci_platform_data *data) +{ + unsigned int i; + unsigned int slot_count = 0; + + if (!data) + return; + + for (i = 0; i < ATMEL_MCI_MAX_NR_SLOTS; i++) { + if (data->slot[i].bus_width) { + /* input/irq */ + if (data->slot[i].detect_pin) { + at91_set_gpio_input(data->slot[i].detect_pin, 1); + at91_set_deglitch(data->slot[i].detect_pin, 1); + } + if (data->slot[i].wp_pin) + at91_set_gpio_input(data->slot[i].wp_pin, 1); + + switch (i) { + case 0: + /* CMD */ + at91_set_A_periph(AT91_PIN_PA7, 1); + /* DAT0, maybe DAT1..DAT3 */ + at91_set_A_periph(AT91_PIN_PA6, 1); + if (data->slot[i].bus_width == 4) { + at91_set_A_periph(AT91_PIN_PA9, 1); + at91_set_A_periph(AT91_PIN_PA10, 1); + at91_set_A_periph(AT91_PIN_PA11, 1); + } + slot_count++; + break; + case 1: + /* CMD */ + at91_set_B_periph(AT91_PIN_PA1, 1); + /* DAT0, maybe DAT1..DAT3 */ + at91_set_B_periph(AT91_PIN_PA0, 1); + if (data->slot[i].bus_width == 4) { + at91_set_B_periph(AT91_PIN_PA5, 1); + at91_set_B_periph(AT91_PIN_PA4, 1); + at91_set_B_periph(AT91_PIN_PA3, 1); + } + slot_count++; + break; + default: + printk(KERN_ERR + "AT91: SD/MMC slot %d not available\n", i); + break; + } + } + } + + if (slot_count) { + /* CLK */ + at91_set_A_periph(AT91_PIN_PA8, 0); + + mmc_data = *data; + platform_device_register(&at91sam9260_mmc_device); + } +} +#else +void __init at91_add_device_mci(short mmc_id, struct mci_platform_data *data) {} +#endif + /* -------------------------------------------------------------------- * NAND / SmartMedia |