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Commit cd8ab004 authored by Tony SIM's avatar Tony SIM Committed by Paul Mundt
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ARM: mach-shmobile: mackerel: Add keypad tca6408a support 



This patch maps key0/key1/key2/key3 as HOME/MENU/BACK/POWER buttons
on mackerel board.

Signed-off-by: default avatarTony SIM <chinyeow.sim.xt@renesas.com>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 80f1dc7c

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

+38 −0
Original line number Diff line number Diff line
@@ -36,6 +36,7 @@ 
#include <linux/mtd/physmap.h>

#include <linux/smsc911x.h>

#include <linux/sh_intc.h>

#include <linux/tca6416_keypad.h>

#include <linux/usb/r8a66597.h>



#include <video/sh_mobile_lcdc.h>
@@ -413,11 +414,44 @@ static struct platform_device *mackerel_devices[] __initdata = { 
	&fsi_ak4643_device,

};



/* Keypad Initialization */

#define KEYPAD_BUTTON(ev_type, ev_code, act_low) \

{								\

	.type		= ev_type,				\

	.code		= ev_code,				\

	.active_low	= act_low,				\

}



#define KEYPAD_BUTTON_LOW(event_code) KEYPAD_BUTTON(EV_KEY, event_code, 1)



static struct tca6416_button mackerel_gpio_keys[] = {

	KEYPAD_BUTTON_LOW(KEY_HOME),

	KEYPAD_BUTTON_LOW(KEY_MENU),

	KEYPAD_BUTTON_LOW(KEY_BACK),

	KEYPAD_BUTTON_LOW(KEY_POWER),

};



static struct tca6416_keys_platform_data mackerel_tca6416_keys_info = {

	.buttons	= mackerel_gpio_keys,

	.nbuttons	= ARRAY_SIZE(mackerel_gpio_keys),

	.rep		= 1,

	.use_polling	= 0,

	.pinmask	= 0x000F,

};



/* I2C */

#define IRQ9 evt2irq(0x0320)



static struct i2c_board_info i2c0_devices[] = {

	{

		I2C_BOARD_INFO("ak4643", 0x13),

	},

	/* Keypad */

	{

		I2C_BOARD_INFO("tca6408-keys", 0x20),

		.platform_data = &mackerel_tca6416_keys_info,

		.irq = IRQ9,

	},

};



#define IRQ21 evt2irq(0x32a0)
@@ -525,6 +559,10 @@ static void __init mackerel_init(void) 


	intc_set_priority(IRQ_FSI, 3); /* irq priority FSI(3) > SMSC911X(2) */



	/* enable Keypad */

	gpio_request(GPIO_FN_IRQ9_42,	NULL);

	set_irq_type(IRQ9, IRQ_TYPE_LEVEL_HIGH);



	/* enable Accelerometer */

	gpio_request(GPIO_FN_IRQ21,	NULL);

	set_irq_type(IRQ21, IRQ_TYPE_LEVEL_HIGH);