diff options
| author | David A. Griego <dgriego@mvista.com> | 2009-09-16 05:10:20 +0400 |
|---|---|---|
| committer | Kevin Hilman <khilman@deeprootsystems.com> | 2009-11-25 21:21:22 +0300 |
| commit | 2eb30c81ce91f646f6f2e6cdfd36b79a492002ce (patch) | |
| tree | 2dd822341f501f24c9196f94680308da4c78f686 /arch/arm | |
| parent | f63dd12da29f47c37bbc093abec098538e04357c (diff) | |
| download | linux-2eb30c81ce91f646f6f2e6cdfd36b79a492002ce.tar.xz | |
davinci: Add MMC/SD support for DA830/OMAP-L137 EVM
Add pinmux settings, etc. to enable the MMC/SC hardware.
Signed-off-by: David A. Griego <dgriego@mvista.com>
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-davinci/board-da830-evm.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/board-da830-evm.c b/arch/arm/mach-davinci/board-da830-evm.c index 39711c123dd6..fe86afa7ea2e 100644 --- a/arch/arm/mach-davinci/board-da830-evm.c +++ b/arch/arm/mach-davinci/board-da830-evm.c @@ -23,6 +23,7 @@ #include <mach/irqs.h> #include <mach/cp_intc.h> #include <mach/mux.h> +#include <mach/gpio.h> #include <mach/da8xx.h> #include <mach/asp.h> @@ -83,6 +84,57 @@ static struct snd_platform_data da830_evm_snd_data = { .rxnumevt = 1, }; +/* + * GPIO2[1] is used as MMC_SD_WP and GPIO2[2] as MMC_SD_INS. + */ +static const short da830_evm_mmc_sd_pins[] = { + DA830_MMCSD_DAT_0, DA830_MMCSD_DAT_1, DA830_MMCSD_DAT_2, + DA830_MMCSD_DAT_3, DA830_MMCSD_DAT_4, DA830_MMCSD_DAT_5, + DA830_MMCSD_DAT_6, DA830_MMCSD_DAT_7, DA830_MMCSD_CLK, + DA830_MMCSD_CMD, DA830_GPIO2_1, DA830_GPIO2_2, + -1 +}; + +#define DA830_MMCSD_WP_PIN GPIO_TO_PIN(2, 1) + +static int da830_evm_mmc_get_ro(int index) +{ + return gpio_get_value(DA830_MMCSD_WP_PIN); +} + +static struct davinci_mmc_config da830_evm_mmc_config = { + .get_ro = da830_evm_mmc_get_ro, + .wires = 4, + .version = MMC_CTLR_VERSION_2, +}; + +static inline void da830_evm_init_mmc(void) +{ + int ret; + + ret = da8xx_pinmux_setup(da830_evm_mmc_sd_pins); + if (ret) { + pr_warning("da830_evm_init: mmc/sd mux setup failed: %d\n", + ret); + return; + } + + ret = gpio_request(DA830_MMCSD_WP_PIN, "MMC WP"); + if (ret) { + pr_warning("da830_evm_init: can not open GPIO %d\n", + DA830_MMCSD_WP_PIN); + return; + } + gpio_direction_input(DA830_MMCSD_WP_PIN); + + ret = da8xx_register_mmcsd0(&da830_evm_mmc_config); + if (ret) { + pr_warning("da830_evm_init: mmc/sd registration failed: %d\n", + ret); + gpio_free(DA830_MMCSD_WP_PIN); + } +} + static __init void da830_evm_init(void) { struct davinci_soc_info *soc_info = &davinci_soc_info; @@ -132,6 +184,8 @@ static __init void da830_evm_init(void) ret); da8xx_register_mcasp(1, &da830_evm_snd_data); + + da830_evm_init_mmc(); } #ifdef CONFIG_SERIAL_8250_CONSOLE |