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at91sam9x5: add mci support 

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Jean-Christophe PLAGNIOL-VILLARD 2012-11-03 12:36:32 +01:00 committed by Sascha Hauer
parent d7a4acac7c
commit ca2d9c59a2
2 changed files with 64 additions and 0 deletions
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2
arch/arm/mach-at91/at91sam9x5.c
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@ -207,6 +207,8 @@ static struct clk_lookup periph_clocks_lookups[] = {
CLKDEV_CON_ID("ohci_clk", &uhphs_clk),
CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi0", &spi0_clk),
CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi1", &spi1_clk),
CLKDEV_CON_DEV_ID("mci_clk", "atmel_mci0", &mmc0_clk),
CLKDEV_CON_DEV_ID("mci_clk", "atmel_mci1", &mmc1_clk),
};
static struct clk_lookup usart_clocks_lookups[] = {

62
arch/arm/mach-at91/at91sam9x5_devices.c
View File

@ -123,6 +123,68 @@ void at91_add_device_eth(int id, struct at91_ether_platform_data *data)
void at91_add_device_eth(int id, struct at91_ether_platform_data *data) {}
#endif
#if defined(CONFIG_MCI_ATMEL)
/* Consider only one slot : slot 0 */
void __init at91_add_device_mci(short mmc_id, struct atmel_mci_platform_data *data)
{
resource_size_t start = ~0;
if (!data)
return;
/* Must have at least one usable slot */
if (!data->bus_width)
return;
/* input/irq */
if (data->detect_pin) {
at91_set_gpio_input(data->detect_pin, 1);
at91_set_deglitch(data->detect_pin, 1);
}
if (data->wp_pin)
at91_set_gpio_input(data->wp_pin, 1);
if (mmc_id == 0) { /* MCI0 */
start = AT91SAM9X5_BASE_MCI0;
/* CLK */
at91_set_A_periph(AT91_PIN_PA17, 0);
/* CMD */
at91_set_A_periph(AT91_PIN_PA16, 1);
/* DAT0, maybe DAT1..DAT3 */
at91_set_A_periph(AT91_PIN_PA15, 1);
if (data->bus_width == 4) {
at91_set_A_periph(AT91_PIN_PA18, 1);
at91_set_A_periph(AT91_PIN_PA19, 1);
at91_set_A_periph(AT91_PIN_PA20, 1);
}
} else { /* MCI1 */
start = AT91SAM9X5_BASE_MCI1;
/* CLK */
at91_set_B_periph(AT91_PIN_PA13, 0);
/* CMD */
at91_set_B_periph(AT91_PIN_PA12, 1);
/* DAT0, maybe DAT1..DAT3 */
at91_set_B_periph(AT91_PIN_PA11, 1);
if (data->bus_width == 4) {
at91_set_B_periph(AT91_PIN_PA2, 1);
at91_set_B_periph(AT91_PIN_PA3, 1);
at91_set_B_periph(AT91_PIN_PA4, 1);
}
}
add_generic_device("atmel_mci", mmc_id, NULL, start, SZ_16K,
IORESOURCE_MEM, data);
}
#else
void __init at91_add_device_mci(short mmc_id, struct atmel_mci_platform_data *data) {}
#endif
/* --------------------------------------------------------------------
* NAND / SmartMedia
* -------------------------------------------------------------------- */