From: Victor Rodriguez <victor.rodrig...@sasken.com>
This patch adds MMC/SD support for the Hawkboard-L138 system
Signed-off-by: Victor Rodriguez <victor.rodrig...@sasken.com>
Tested-by: Rene Gonzalez <renegs.2...@gmail.com>
---
Notes:
This patch works with da8xx_omapl_defconfig
In order to test it select in menuconfig like insmodule
MMC/SD/SDIO card support --->
MMC block device driver
Use bounce buffer for simple hosts
TI DAVINCI Multimedia Card Interface support
arch/arm/mach-davinci/board-omapl138-hawk.c | 63 +++++++++++++++++++++++++++
1 files changed, 63 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-davinci/board-omapl138-hawk.c
b/arch/arm/mach-davinci/board-omapl138-hawk.c
index 115dac0..02e54fa 100644
--- a/arch/arm/mach-davinci/board-omapl138-hawk.c
+++ b/arch/arm/mach-davinci/board-omapl138-hawk.c
@@ -23,6 +23,8 @@
#include <mach/mux.h>
#define HAWKBOARD_PHY_ID "0:07"
+#define DA850_HAWK_MMCSD_CD_PIN GPIO_TO_PIN(3, 12)
+#define DA850_HAWK_MMCSD_WP_PIN GPIO_TO_PIN(3, 13)
static short omapl138_hawk_mii_pins[] __initdata = {
DA850_MII_TXEN, DA850_MII_TXCLK, DA850_MII_COL, DA850_MII_TXD_3,
@@ -143,6 +145,65 @@ static struct snd_platform_data omapl138_hawk_snd_data = {
.rxnumevt = 1,
};
+static const short hawk_mmcsd0_pins[] = {
+ DA850_MMCSD0_DAT_0, DA850_MMCSD0_DAT_1, DA850_MMCSD0_DAT_2,
+ DA850_MMCSD0_DAT_3, DA850_MMCSD0_CLK, DA850_MMCSD0_CMD,
+ DA850_GPIO3_12, DA850_GPIO3_13,
+ -1
+};
+
+static int da850_hawk_mmc_get_ro(int index)
+{
+ return gpio_get_value(DA850_HAWK_MMCSD_WP_PIN);
+}
+
+static int da850_hawk_mmc_get_cd(int index)
+{
+ return !gpio_get_value(DA850_HAWK_MMCSD_CD_PIN);
+}
+
+static struct davinci_mmc_config da850_mmc_config = {
+ .get_ro = da850_hawk_mmc_get_ro,
+ .get_cd = da850_hawk_mmc_get_cd,
+ .wires = 4,
+ .max_freq = 50000000,
+ .caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
+ .version = MMC_CTLR_VERSION_2,
+};
+
+static __init void omapl138_hawk_mmc_init(void)
+{
+ int ret;
+
+ ret = davinci_cfg_reg_list(hawk_mmcsd0_pins);
+ if (ret) {
+ pr_warning("%s: MMC/SD0 mux setup failed: %d\n",
+ __func__, ret);
+ return;
+ }
+
+ ret = gpio_request_one(DA850_HAWK_MMCSD_CD_PIN,
+ GPIOF_DIR_IN, "MMC CD");
+ if (ret < 0) {
+ pr_warning("%s: can not open GPIO %d\n",
+ __func__, DA850_HAWK_MMCSD_CD_PIN);
+ return;
+ }
+
+ ret = gpio_request_one(DA850_HAWK_MMCSD_WP_PIN,
+ GPIOF_DIR_IN, "MMC WP");
+ if (ret < 0) {
+ pr_warning("%s: can not open GPIO %d\n",
+ __func__, DA850_HAWK_MMCSD_WP_PIN);
+ return;
+ }
+
+ ret = da8xx_register_mmcsd0(&da850_mmc_config);
+ if (ret)
+ pr_warning("%s: MMC/SD0 registration failed: %d\n",
+ __func__, ret);
+}
+
static struct davinci_uart_config omapl138_hawk_uart_config __initdata = {
.enabled_uarts = 0x7,
};
@@ -173,6 +234,8 @@ static __init void omapl138_hawk_init(void)
pr_warning("%s: mcasp mux setup failed: %d\n", __func__, ret);
da8xx_register_mcasp(0, &omapl138_hawk_snd_data);
+ omapl138_hawk_mmc_init();
+
ret = da8xx_register_watchdog();
if (ret)
pr_warning("omapl138_hawk_init: "
--
1.7.0.4
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