ARM: mach-shmobile: armadillo800eva: add SDHI0 support

On armadillo800eva board,
CD (= Card Detect) pin is not connected to SDHI0_CD.
Then, we can use IRQ31 as card detect irq,
but it needs chattering removal operation.
We should use IRQ card detect in the future,
but this patch use polling mode at this point.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Simon Horman <horms@verge.net.au>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

diff --git a/arch/arm/mach-shmobile/board-armadillo800eva.c b/arch/arm/mach-shmobile/board-armadillo800eva.c
index 1d25d5f..ed85686 100644 (file)
--- a/arch/arm/mach-shmobile/board-armadillo800eva.c
+++ b/arch/arm/mach-shmobile/board-armadillo800eva.c
@@ -31,6 +31,9 @@
 #include <linux/sh_eth.h>
 #include <linux/videodev2.h>
 #include <linux/usb/renesas_usbhs.h>
+#include <linux/mfd/tmio.h>
+#include <linux/mmc/host.h>
+#include <linux/mmc/sh_mobile_sdhi.h>
 #include <mach/common.h>
 #include <mach/irqs.h>
 #include <asm/page.h>
@@ -402,6 +405,55 @@ static struct platform_device gpio_keys_device = {
        },
 };
 
+/* SDHI0 */
+/*
+ * FIXME
+ *
+ * It use polling mode here, since
+ * CD (= Card Detect) pin is not connected to SDHI0_CD.
+ * We can use IRQ31 as card detect irq,
+ * but it needs chattering removal operation
+ */
+#define IRQ31  evt2irq(0x33E0)
+static struct sh_mobile_sdhi_info sdhi0_info = {
+       .tmio_caps      = MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ |\
+                         MMC_CAP_NEEDS_POLL,
+       .tmio_ocr_mask  = MMC_VDD_165_195 | MMC_VDD_32_33 | MMC_VDD_33_34,
+       .tmio_flags     = TMIO_MMC_HAS_IDLE_WAIT,
+};
+
+static struct resource sdhi0_resources[] = {
+       {
+               .name   = "SDHI0",
+               .start  = 0xe6850000,
+               .end    = 0xe6850100 - 1,
+               .flags  = IORESOURCE_MEM,
+       },
+       /*
+        * no SH_MOBILE_SDHI_IRQ_CARD_DETECT here
+        */
+       {
+               .name   = SH_MOBILE_SDHI_IRQ_SDCARD,
+               .start  = evt2irq(0x0E20),
+               .flags  = IORESOURCE_IRQ,
+       },
+       {
+               .name   = SH_MOBILE_SDHI_IRQ_SDIO,
+               .start  = evt2irq(0x0E40),
+               .flags  = IORESOURCE_IRQ,
+       },
+};
+
+static struct platform_device sdhi0_device = {
+       .name           = "sh_mobile_sdhi",
+       .id             = 0,
+       .dev            = {
+               .platform_data  = &sdhi0_info,
+       },
+       .num_resources  = ARRAY_SIZE(sdhi0_resources),
+       .resource       = sdhi0_resources,
+};
+
 /* I2C */
 static struct i2c_board_info i2c0_devices[] = {
        {
@@ -417,6 +469,7 @@ static struct platform_device *eva_devices[] __initdata = {
        &lcdc0_device,
        &gpio_keys_device,
        &sh_eth_device,
+       &sdhi0_device,
 };
 
 static void __init eva_clock_init(void)
@@ -539,6 +592,24 @@ static void __init eva_init(void)
                platform_device_register(&usbhsf_device);
        }
 
+       /* SDHI0 */
+       gpio_request(GPIO_FN_SDHI0_CMD, NULL);
+       gpio_request(GPIO_FN_SDHI0_CLK, NULL);
+       gpio_request(GPIO_FN_SDHI0_D0, NULL);
+       gpio_request(GPIO_FN_SDHI0_D1, NULL);
+       gpio_request(GPIO_FN_SDHI0_D2, NULL);
+       gpio_request(GPIO_FN_SDHI0_D3, NULL);
+       gpio_request(GPIO_FN_SDHI0_WP, NULL);
+
+       gpio_request(GPIO_PORT17, NULL);        /* SDHI0_18/33_B */
+       gpio_request(GPIO_PORT74, NULL);        /* SDHI0_PON */
+       gpio_request(GPIO_PORT75, NULL);        /* SDSLOT1_PON */
+       gpio_direction_output(GPIO_PORT17, 0);
+       gpio_direction_output(GPIO_PORT74, 1);
+       gpio_direction_output(GPIO_PORT75, 1);
+
+       /* we can use GPIO_FN_IRQ31_PORT167 here for SDHI0 CD irq */
+
        /*
         * CAUTION
         *