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ARM: mach-shmobile: Add SDHI support

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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>
This commit is contained in:
Kuninori Morimoto 2010-03-29 06:31:36 +00:00 committed by Paul Mundt
parent 4eea423a45
commit 819ee86796
1 changed files with 127 additions and 0 deletions
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127
arch/arm/mach-shmobile/board-g4evm.c
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@ -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));