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authorKuninori Morimoto <morimoto.kuninori@renesas.com>2010-03-29 06:31:36 +0000
committerPaul Mundt <lethal@linux-sh.org>2010-04-07 16:26:53 +0900
commit819ee86796ae263cd76dd734085dab70d1250cdb (patch)
tree8828864aa56406f1e7391453dfd130483f0cb1fa /arch/arm/mach-shmobile/board-g4evm.c
parent4eea423a4567937dc5e0abdc72bd21b546180459 (diff)
ARM: mach-shmobile: Add SDHI support
This patch add SDHI support for G4 board. Current gpio frame work doesn't have the method to control only pull-up/down/free. So, it have special gpio_pull_up function for SDHI. It is quick hack, so this function should be replaced by correct gpio frame work in future. Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/arm/mach-shmobile/board-g4evm.c')
-rw-r--r--arch/arm/mach-shmobile/board-g4evm.c127
1 files changed, 127 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/board-g4evm.c b/arch/arm/mach-shmobile/board-g4evm.c
index 10673a90be52..33441d58cfa6 100644
--- a/arch/arm/mach-shmobile/board-g4evm.c
+++ b/arch/arm/mach-shmobile/board-g4evm.c
@@ -30,6 +30,7 @@
#include <linux/io.h>
#include <linux/input.h>
#include <linux/input/sh_keysc.h>
+#include <linux/mfd/sh_mobile_sdhi.h>
#include <linux/gpio.h>
#include <mach/sh7377.h>
#include <mach/common.h>
@@ -37,6 +38,31 @@
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
+/*
+ * SDHI
+ *
+ * SDHI0 : card detection is possible
+ * SDHI1 : card detection is impossible
+ *
+ * [G4-MAIN-BOARD]
+ * JP74 : short # DBG_2V8A for SDHI0
+ * JP75 : NC # DBG_3V3A for SDHI0
+ * JP76 : NC # DBG_3V3A_SD for SDHI0
+ * JP77 : NC # 3V3A_SDIO for SDHI1
+ * JP78 : short # DBG_2V8A for SDHI1
+ * JP79 : NC # DBG_3V3A for SDHI1
+ * JP80 : NC # DBG_3V3A_SD for SDHI1
+ *
+ * [G4-CORE-BOARD]
+ * S32 : all off # to dissever from G3-CORE_DBG board
+ * S33 : all off # to dissever from G3-CORE_DBG board
+ *
+ * [G3-CORE_DBG-BOARD]
+ * S1 : all off # to dissever from G3-CORE_DBG board
+ * S3 : all off # to dissever from G3-CORE_DBG board
+ * S4 : all off # to dissever from G3-CORE_DBG board
+ */
+
static struct mtd_partition nor_flash_partitions[] = {
{
.name = "loader",
@@ -169,10 +195,53 @@ static struct platform_device keysc_device = {
},
};
+/* SDHI */
+static struct resource sdhi0_resources[] = {
+ [0] = {
+ .name = "SDHI0",
+ .start = 0xe6d50000,
+ .end = 0xe6d501ff,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = 96,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device sdhi0_device = {
+ .name = "sh_mobile_sdhi",
+ .num_resources = ARRAY_SIZE(sdhi0_resources),
+ .resource = sdhi0_resources,
+ .id = 0,
+};
+
+static struct resource sdhi1_resources[] = {
+ [0] = {
+ .name = "SDHI1",
+ .start = 0xe6d60000,
+ .end = 0xe6d601ff,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = 100,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device sdhi1_device = {
+ .name = "sh_mobile_sdhi",
+ .num_resources = ARRAY_SIZE(sdhi1_resources),
+ .resource = sdhi1_resources,
+ .id = 1,
+};
+
static struct platform_device *g4evm_devices[] __initdata = {
&nor_flash_device,
&usb_host_device,
&keysc_device,
+ &sdhi0_device,
+ &sdhi1_device,
};
static struct map_desc g4evm_io_desc[] __initdata = {
@@ -197,6 +266,36 @@ static void __init g4evm_map_io(void)
shmobile_setup_console();
}
+#define GPIO_SDHID0_D0 0xe60520fc
+#define GPIO_SDHID0_D1 0xe60520fd
+#define GPIO_SDHID0_D2 0xe60520fe
+#define GPIO_SDHID0_D3 0xe60520ff
+#define GPIO_SDHICMD0 0xe6052100
+
+#define GPIO_SDHID1_D0 0xe6052103
+#define GPIO_SDHID1_D1 0xe6052104
+#define GPIO_SDHID1_D2 0xe6052105
+#define GPIO_SDHID1_D3 0xe6052106
+#define GPIO_SDHICMD1 0xe6052107
+
+/*
+ * FIXME !!
+ *
+ * gpio_pull_up is quick_hack.
+ *
+ * current gpio frame work doesn't have
+ * the method to control only pull up/down/free.
+ * this function should be replaced by correct gpio function
+ */
+static void __init gpio_pull_up(u32 addr)
+{
+ u8 data = __raw_readb(addr);
+
+ data &= 0x0F;
+ data |= 0xC0;
+ __raw_writeb(data, addr);
+}
+
static void __init g4evm_init(void)
{
sh7377_pinmux_init();
@@ -253,6 +352,34 @@ static void __init g4evm_init(void)
gpio_request(GPIO_FN_PORT71_KEYIN5_PU, NULL);
gpio_request(GPIO_FN_PORT72_KEYIN6_PU, NULL);
+ /* SDHI0 */
+ gpio_request(GPIO_FN_SDHICLK0, NULL);
+ gpio_request(GPIO_FN_SDHICD0, NULL);
+ gpio_request(GPIO_FN_SDHID0_0, NULL);
+ gpio_request(GPIO_FN_SDHID0_1, NULL);
+ gpio_request(GPIO_FN_SDHID0_2, NULL);
+ gpio_request(GPIO_FN_SDHID0_3, NULL);
+ gpio_request(GPIO_FN_SDHICMD0, NULL);
+ gpio_request(GPIO_FN_SDHIWP0, NULL);
+ gpio_pull_up(GPIO_SDHID0_D0);
+ gpio_pull_up(GPIO_SDHID0_D1);
+ gpio_pull_up(GPIO_SDHID0_D2);
+ gpio_pull_up(GPIO_SDHID0_D3);
+ gpio_pull_up(GPIO_SDHICMD0);
+
+ /* SDHI1 */
+ gpio_request(GPIO_FN_SDHICLK1, NULL);
+ gpio_request(GPIO_FN_SDHID1_0, NULL);
+ gpio_request(GPIO_FN_SDHID1_1, NULL);
+ gpio_request(GPIO_FN_SDHID1_2, NULL);
+ gpio_request(GPIO_FN_SDHID1_3, NULL);
+ gpio_request(GPIO_FN_SDHICMD1, NULL);
+ gpio_pull_up(GPIO_SDHID1_D0);
+ gpio_pull_up(GPIO_SDHID1_D1);
+ gpio_pull_up(GPIO_SDHID1_D2);
+ gpio_pull_up(GPIO_SDHID1_D3);
+ gpio_pull_up(GPIO_SDHICMD1);
+
sh7377_add_standard_devices();
platform_add_devices(g4evm_devices, ARRAY_SIZE(g4evm_devices));