hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

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>
This commit is contained in:
David A. Griego 2009-09-15 18:10:20 -07:00 committed by Kevin Hilman
parent f63dd12da2
commit 2eb30c81ce
1 changed files with 54 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

54
arch/arm/mach-davinci/board-da830-evm.c
View File

@ -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