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ARM: mach-shmobile: mackerel: Add keypad tca6408a support

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

Signed-off-by: Tony SIM <chinyeow.sim.xt@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Tony SIM 2010-12-09 01:55:55 +00:00 committed by Paul Mundt
parent 80f1dc7cc9
commit cd8ab0041d
1 changed files with 38 additions and 0 deletions
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38
arch/arm/mach-shmobile/board-mackerel.c
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@ -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);