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Commit 819ee867 authored by Kuninori Morimoto's avatar Kuninori Morimoto Committed by Paul Mundt
Browse files

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: default avatarKuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 4eea423a

arch/arm/mach-shmobile/board-g4evm.c

+127 −0
Original line number Diff line number Diff line
@@ -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));