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Commit 1e354641 authored by Kuninori Morimoto's avatar Kuninori Morimoto Committed by Rafael J. Wysocki
Browse files

ARM: mach-shmobile: kzm9g: add PCF8757 gpio-key 



This patch adds extra GPIO via PCF8757 chip,
and use it as gpio-key.

Signed-off-by: default avatarKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: default avatarSimon Horman <horms@verge.net.au>
Acked-by: default avatarMagnus Damm <damm@opensource.se>
Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
parent 7775a933

arch/arm/mach-shmobile/board-kzm9g.c

+59 −0
Original line number Diff line number Diff line
@@ -19,9 +19,12 @@ 


#include <linux/delay.h>

#include <linux/gpio.h>

#include <linux/gpio_keys.h>

#include <linux/io.h>

#include <linux/irq.h>

#include <linux/i2c.h>

#include <linux/i2c/pcf857x.h>

#include <linux/input.h>

#include <linux/mmc/host.h>

#include <linux/mmc/sh_mmcif.h>

#include <linux/mmc/sh_mobile_sdhi.h>
@@ -39,6 +42,18 @@ 
#include <asm/mach/arch.h>

#include <video/sh_mobile_lcdc.h>



/*

 * external GPIO

 */

#define GPIO_PCF8575_BASE	(GPIO_NR)

#define GPIO_PCF8575_PORT10	(GPIO_NR + 8)

#define GPIO_PCF8575_PORT11	(GPIO_NR + 9)

#define GPIO_PCF8575_PORT12	(GPIO_NR + 10)

#define GPIO_PCF8575_PORT13	(GPIO_NR + 11)

#define GPIO_PCF8575_PORT14	(GPIO_NR + 12)

#define GPIO_PCF8575_PORT15	(GPIO_NR + 13)

#define GPIO_PCF8575_PORT16	(GPIO_NR + 14)



/* SMSC 9221 */

static struct resource smsc9221_resources[] = {

	[0] = {
@@ -225,7 +240,38 @@ static struct platform_device sdhi0_device = { 
	},

};



/* KEY */

#define GPIO_KEY(c, g, d) { .code = c, .gpio = g, .desc = d, .active_low = 1 }



static struct gpio_keys_button gpio_buttons[] = {

	GPIO_KEY(KEY_BACK,	GPIO_PCF8575_PORT10,	"SW3"),

	GPIO_KEY(KEY_RIGHT,	GPIO_PCF8575_PORT11,	"SW2-R"),

	GPIO_KEY(KEY_LEFT,	GPIO_PCF8575_PORT12,	"SW2-L"),

	GPIO_KEY(KEY_ENTER,	GPIO_PCF8575_PORT13,	"SW2-P"),

	GPIO_KEY(KEY_UP,	GPIO_PCF8575_PORT14,	"SW2-U"),

	GPIO_KEY(KEY_DOWN,	GPIO_PCF8575_PORT15,	"SW2-D"),

	GPIO_KEY(KEY_HOME,	GPIO_PCF8575_PORT16,	"SW1"),

};



static struct gpio_keys_platform_data gpio_key_info = {

	.buttons	= gpio_buttons,

	.nbuttons	= ARRAY_SIZE(gpio_buttons),

	.poll_interval	= 250, /* poling at this point */

};



static struct platform_device gpio_keys_device = {

	/* gpio-pcf857x.c driver doesn't support gpio_to_irq() */

	.name	= "gpio-keys-polled",

	.dev	= {

		.platform_data  = &gpio_key_info,

	},

};



/* I2C */

static struct pcf857x_platform_data pcf8575_pdata = {

	.gpio_base	= GPIO_PCF8575_BASE,

};



static struct i2c_board_info i2c1_devices[] = {

	{

		I2C_BOARD_INFO("st1232-ts", 0x55),
@@ -233,12 +279,20 @@ static struct i2c_board_info i2c1_devices[] = { 
	},

};



static struct i2c_board_info i2c3_devices[] = {

	{

		I2C_BOARD_INFO("pcf8575", 0x20),

		.platform_data = &pcf8575_pdata,

	},

};



static struct platform_device *kzm_devices[] __initdata = {

	&smsc_device,

	&usb_host_device,

	&lcdc_device,

	&mmc_device,

	&sdhi0_device,

	&gpio_keys_device,

};



/*
@@ -373,12 +427,17 @@ static void __init kzm_init(void) 
	gpio_request(GPIO_PORT15, NULL);

	gpio_direction_output(GPIO_PORT15, 1); /* power */



	/* I2C 3 */

	gpio_request(GPIO_FN_PORT27_I2C_SCL3, NULL);

	gpio_request(GPIO_FN_PORT28_I2C_SDA3, NULL);



#ifdef CONFIG_CACHE_L2X0

	/* Early BRESP enable, Shared attribute override enable, 64K*8way */

	l2x0_init(IOMEM(0xf0100000), 0x40460000, 0x82000fff);

#endif



	i2c_register_board_info(1, i2c1_devices, ARRAY_SIZE(i2c1_devices));

	i2c_register_board_info(3, i2c3_devices, ARRAY_SIZE(i2c3_devices));



	sh73a0_add_standard_devices();

	platform_add_devices(kzm_devices, ARRAY_SIZE(kzm_devices));