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authorDaniel Mack <daniel@caiaq.de>2009-11-19 12:02:07 +0100
committerSascha Hauer <s.hauer@pengutronix.de>2009-11-19 17:11:01 +0100
commit364cd540f036f106d886a9c51ae05e9a9bacf051 (patch)
treed839d21fefe3f51efc64c419d90a24177465564e /arch/arm/mach-mx3/mx31lite-db.c
parentb7d91a62cb402a3d24a15dca9d2b0c309c4227b4 (diff)
ARM: MX3: add MMC/SDHC support to mx31lite-db.c
Signed-off-by: Daniel Mack <daniel@caiaq.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-mx3/mx31lite-db.c')
-rw-r--r--arch/arm/mach-mx3/mx31lite-db.c70
1 files changed, 70 insertions, 0 deletions
diff --git a/arch/arm/mach-mx3/mx31lite-db.c b/arch/arm/mach-mx3/mx31lite-db.c
index 751d15ec0b0..45abae1da33 100644
--- a/arch/arm/mach-mx3/mx31lite-db.c
+++ b/arch/arm/mach-mx3/mx31lite-db.c
@@ -38,6 +38,7 @@
#include <mach/imx-uart.h>
#include <mach/iomux-mx3.h>
#include <mach/board-mx31lite.h>
+#include <mach/mmc.h>
#include "devices.h"
@@ -61,11 +62,80 @@ static struct imxuart_platform_data uart_pdata __initdata = {
.flags = IMXUART_HAVE_RTSCTS,
};
+/* MMC */
+
+static int gpio_det, gpio_wp;
+
+#define MMC_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
+ PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
+
+static int mxc_mmc1_get_ro(struct device *dev)
+{
+ return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_LCS0));
+}
+
+static int mxc_mmc1_init(struct device *dev,
+ irq_handler_t detect_irq, void *data)
+{
+ int ret;
+
+ gpio_det = IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1);
+ gpio_wp = IOMUX_TO_GPIO(MX31_PIN_GPIO1_6);
+
+ mxc_iomux_set_pad(MX31_PIN_SD1_DATA0, MMC_PAD_CFG);
+ mxc_iomux_set_pad(MX31_PIN_SD1_DATA1, MMC_PAD_CFG);
+ mxc_iomux_set_pad(MX31_PIN_SD1_DATA2, MMC_PAD_CFG);
+ mxc_iomux_set_pad(MX31_PIN_SD1_DATA3, MMC_PAD_CFG);
+ mxc_iomux_set_pad(MX31_PIN_SD1_CLK, MMC_PAD_CFG);
+ mxc_iomux_set_pad(MX31_PIN_SD1_CMD, MMC_PAD_CFG);
+
+ ret = gpio_request(gpio_det, "MMC detect");
+ if (ret)
+ return ret;
+
+ ret = gpio_request(gpio_wp, "MMC w/p");
+ if (ret)
+ goto exit_free_det;
+
+ gpio_direction_input(gpio_det);
+ gpio_direction_input(gpio_wp);
+
+ ret = request_irq(IOMUX_TO_IRQ(MX31_PIN_DCD_DCE1), detect_irq,
+ IRQF_DISABLED | IRQF_TRIGGER_FALLING,
+ "MMC detect", data);
+ if (ret)
+ goto exit_free_wp;
+
+ return 0;
+
+exit_free_wp:
+ gpio_free(gpio_wp);
+
+exit_free_det:
+ gpio_free(gpio_det);
+
+ return ret;
+}
+
+static void mxc_mmc1_exit(struct device *dev, void *data)
+{
+ gpio_free(gpio_det);
+ gpio_free(gpio_wp);
+ free_irq(IOMUX_TO_IRQ(MX31_PIN_GPIO1_1), data);
+}
+
+static struct imxmmc_platform_data mmc_pdata = {
+ .get_ro = mxc_mmc1_get_ro,
+ .init = mxc_mmc1_init,
+ .exit = mxc_mmc1_exit,
+};
+
void __init mx31lite_db_init(void)
{
mxc_iomux_setup_multiple_pins(litekit_db_board_pins,
ARRAY_SIZE(litekit_db_board_pins),
"development board pins");
mxc_register_device(&mxc_uart_device0, &uart_pdata);
+ mxc_register_device(&mxcsdhc_device0, &mmc_pdata);
}