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davinci: MMC platform support

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Add SoC and platform-specific data and init for MMC driver.

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
This commit is contained in:
Kevin Hilman
2009-05-11 15:55:03 -07:00
parent 35652fe185
commit 2dbf56aeb7
5 changed files with 271 additions and 0 deletions
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29
arch/arm/mach-davinci/board-dm355-evm.c
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@@ -36,6 +36,7 @@
#include <mach/i2c.h>
#include <mach/serial.h>
#include <mach/nand.h>
#include <mach/mmc.h>
#define DAVINCI_ASYNC_EMIF_CONTROL_BASE 0x01e10000
#define DAVINCI_ASYNC_EMIF_DATA_CE0_BASE 0x02000000
@@ -191,6 +192,31 @@ static void __init dm355_evm_map_io(void)
dm355_init();
}
static int dm355evm_mmc_get_cd(int module)
{
if (!gpio_is_valid(dm355evm_mmc_gpios))
return -ENXIO;
/* low == card present */
return !gpio_get_value_cansleep(dm355evm_mmc_gpios + 2 * module + 1);
}
static int dm355evm_mmc_get_ro(int module)
{
if (!gpio_is_valid(dm355evm_mmc_gpios))
return -ENXIO;
/* high == card's write protect switch active */
return gpio_get_value_cansleep(dm355evm_mmc_gpios + 2 * module + 0);
}
static struct davinci_mmc_config dm355evm_mmc_config = {
.get_cd = dm355evm_mmc_get_cd,
.get_ro = dm355evm_mmc_get_ro,
.wires = 4,
.max_freq = 50000000,
.caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
.version = MMC_CTLR_VERSION_1,
};
/* Don't connect anything to J10 unless you're only using USB host
* mode *and* have to do so with some kind of gender-bender. If
* you have proper Mini-B or Mini-A cables (or Mini-A adapters)
@@ -249,6 +275,9 @@ static __init void dm355_evm_init(void)
/* irlml6401 switches over 1A in under 8 msec */
setup_usb(500, 8);
davinci_setup_mmc(0, &dm355evm_mmc_config);
davinci_setup_mmc(1, &dm355evm_mmc_config);
dm355_init_spi0(BIT(0), dm355_evm_spi_info,
ARRAY_SIZE(dm355_evm_spi_info));
}