ARM: mach-shmobile: mackerel: Add sdhi support

Signed-off-by: Yusuke Goda <yusuke.goda.sx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 175 insertions, 0 deletions

diff --git a/arch/arm/mach-shmobile/board-mackerel.c b/arch/arm/mach-shmobile/board-mackerel.c
index 3e30a5250414..f62f9b9ea5f2 100644
--- a/arch/arm/mach-shmobile/board-mackerel.c
+++ b/arch/arm/mach-shmobile/board-mackerel.c
@@ -31,6 +31,9 @@
 #include <linux/io.h>
 #include <linux/i2c.h>
 #include <linux/leds.h>
+#include <linux/mfd/sh_mobile_sdhi.h>
+#include <linux/mfd/tmio.h>
+#include <linux/mmc/host.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
 #include <linux/mtd/physmap.h>
@@ -139,6 +142,38 @@
  */
 
 /*
+ * SDHI0 (CN12)
+ *
+ * SW56 : OFF
+ *
+ */
+
+/* MMC /SDHI1 (CN7)
+ *
+ * I/O voltage : 1.8v
+ *
+ * Power voltage : 1.8v or 3.3v
+ *  J22 : select power voltage
+ *      1-2 pin : 1.8v
+ *      2-3 pin : 3.3v
+ *
+ *      SW1     |       SW33
+ *              | bit1 | bit2 | bit3 | bit4
+ * -------------+------+------+------+-------
+ * MMC0   OFF   |  OFF |  ON  |  ON  |  X
+ * MMC1   ON    |  OFF |  ON  |  X   | ON
+ * SDHI1  OFF   |  ON  |   X  |  OFF | ON
+ *
+ */
+
+/*
+ * SDHI2 (CN23)
+ *
+ * microSD card sloct
+ *
+ */
+
+/*
  * FIXME !!
  *
  * gpio_no_direction
@@ -404,6 +439,114 @@ static struct platform_device fsi_ak4643_device = {
         .name           = "sh_fsi2_a_ak4643",
 };
 
+/*
+ * The card detect pin of the top SD/MMC slot (CN7) is active low and is
+ * connected to GPIO A22 of SH7372 (GPIO_PORT41).
+ */
+static int slot_cn7_get_cd(struct platform_device *pdev)
+{
+        if (gpio_is_valid(GPIO_PORT41))
+                return !gpio_get_value(GPIO_PORT41);
+        else
+                return -ENXIO;
+}
+
+/* SDHI0 */
+static struct sh_mobile_sdhi_info sdhi0_info = {
+        .dma_slave_tx   = SHDMA_SLAVE_SDHI0_TX,
+        .dma_slave_rx   = SHDMA_SLAVE_SDHI0_RX,
+        .tmio_caps      = MMC_CAP_SD_HIGHSPEED,
+};
+
+static struct resource sdhi0_resources[] = {
+        [0] = {
+                .name   = "SDHI0",
+                .start  = 0xe6850000,
+                .end    = 0xe68501ff,
+                .flags  = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start  = evt2irq(0x0e00) /* SDHI0 */,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static struct platform_device sdhi0_device = {
+        .name           = "sh_mobile_sdhi",
+        .num_resources  = ARRAY_SIZE(sdhi0_resources),
+        .resource       = sdhi0_resources,
+        .id             = 0,
+        .dev    = {
+                .platform_data  = &sdhi0_info,
+        },
+};
+
+/* SDHI1 */
+static struct sh_mobile_sdhi_info sdhi1_info = {
+        .dma_slave_tx   = SHDMA_SLAVE_SDHI1_TX,
+        .dma_slave_rx   = SHDMA_SLAVE_SDHI1_RX,
+        .tmio_ocr_mask  = MMC_VDD_165_195,
+        .tmio_flags     = TMIO_MMC_WRPROTECT_DISABLE,
+        .tmio_caps      = MMC_CAP_SD_HIGHSPEED |
+                          MMC_CAP_NEEDS_POLL,
+        .get_cd         = slot_cn7_get_cd,
+};
+
+static struct resource sdhi1_resources[] = {
+        [0] = {
+                .name   = "SDHI1",
+                .start  = 0xe6860000,
+                .end    = 0xe68601ff,
+                .flags  = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start  = evt2irq(0x0e80),
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static struct platform_device sdhi1_device = {
+        .name           = "sh_mobile_sdhi",
+        .num_resources  = ARRAY_SIZE(sdhi1_resources),
+        .resource       = sdhi1_resources,
+        .id             = 1,
+        .dev    = {
+                .platform_data  = &sdhi1_info,
+        },
+};
+
+/* SDHI2 */
+static struct sh_mobile_sdhi_info sdhi2_info = {
+        .dma_slave_tx   = SHDMA_SLAVE_SDHI2_TX,
+        .dma_slave_rx   = SHDMA_SLAVE_SDHI2_RX,
+        .tmio_flags     = TMIO_MMC_WRPROTECT_DISABLE,
+        .tmio_caps      = MMC_CAP_SD_HIGHSPEED |
+                          MMC_CAP_NEEDS_POLL,
+};
+
+static struct resource sdhi2_resources[] = {
+        [0] = {
+                .name   = "SDHI2",
+                .start  = 0xe6870000,
+                .end    = 0xe68701ff,
+                .flags  = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start  = evt2irq(0x1200),
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static struct platform_device sdhi2_device = {
+        .name   = "sh_mobile_sdhi",
+        .num_resources  = ARRAY_SIZE(sdhi2_resources),
+        .resource       = sdhi2_resources,
+        .id             = 2,
+        .dev    = {
+                .platform_data  = &sdhi2_info,
+        },
+};
+
 static struct platform_device *mackerel_devices[] __initdata = {
         &nor_flash_device,
         &smc911x_device,
@@ -412,6 +555,9 @@ static struct platform_device *mackerel_devices[] __initdata = {
         &leds_device,
         &fsi_device,
         &fsi_ak4643_device,
+        &sdhi0_device,
+        &sdhi1_device,
+        &sdhi2_device,
 };
 
 /* Keypad Initialization */
@@ -567,6 +713,35 @@ static void __init mackerel_init(void)
         gpio_request(GPIO_FN_IRQ21,     NULL);
         set_irq_type(IRQ21, IRQ_TYPE_LEVEL_HIGH);
 
+        /* enable SDHI0 */
+        gpio_request(GPIO_FN_SDHICD0, NULL);
+        gpio_request(GPIO_FN_SDHIWP0, NULL);
+        gpio_request(GPIO_FN_SDHICMD0, NULL);
+        gpio_request(GPIO_FN_SDHICLK0, NULL);
+        gpio_request(GPIO_FN_SDHID0_3, NULL);
+        gpio_request(GPIO_FN_SDHID0_2, NULL);
+        gpio_request(GPIO_FN_SDHID0_1, NULL);
+        gpio_request(GPIO_FN_SDHID0_0, NULL);
+
+        /* enable SDHI1 */
+        gpio_request(GPIO_FN_SDHICMD1, NULL);
+        gpio_request(GPIO_FN_SDHICLK1, NULL);
+        gpio_request(GPIO_FN_SDHID1_3, NULL);
+        gpio_request(GPIO_FN_SDHID1_2, NULL);
+        gpio_request(GPIO_FN_SDHID1_1, NULL);
+        gpio_request(GPIO_FN_SDHID1_0, NULL);
+        /* card detect pin for MMC slot (CN7) */
+        gpio_request(GPIO_PORT41, NULL);
+        gpio_direction_input(GPIO_PORT41);
+
+        /* enable SDHI2 */
+        gpio_request(GPIO_FN_SDHICMD2, NULL);
+        gpio_request(GPIO_FN_SDHICLK2, NULL);
+        gpio_request(GPIO_FN_SDHID2_3, NULL);
+        gpio_request(GPIO_FN_SDHID2_2, NULL);
+        gpio_request(GPIO_FN_SDHID2_1, NULL);
+        gpio_request(GPIO_FN_SDHID2_0, NULL);
+
         i2c_register_board_info(0, i2c0_devices,
                                 ARRAY_SIZE(i2c0_devices));
         i2c_register_board_info(1, i2c1_devices,