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ARM: mmp/dkb: enable max7312 gpio expander 

Support max7312 gpio expander in TTC DKB.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
This commit is contained in:
Haojian Zhuang 2011-04-01 10:39:28 +08:00 committed by Eric Miao
parent f16e05c750
commit e04eb14fd2
1 changed files with 30 additions and 1 deletions
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31
arch/arm/mach-mmp/ttc_dkb.c
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@ -15,6 +15,8 @@
#include <linux/mtd/partitions.h>
#include <linux/mtd/onenand.h>
#include <linux/interrupt.h>
#include <linux/i2c/pca953x.h>
#include <linux/gpio.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
@ -25,7 +27,17 @@
#include "common.h"
#define TTCDKB_NR_IRQS (IRQ_BOARD_START + 24)
#define TTCDKB_GPIO_EXT0(x) (NR_BUILTIN_GPIO + ((x < 0) ? 0 : \
((x < 16) ? x : 15)))
#define TTCDKB_GPIO_EXT1(x) (NR_BUILTIN_GPIO + 16 + ((x < 0) ? 0 : \
((x < 16) ? x : 15)))
/*
* 16 board interrupts -- MAX7312 GPIO expander
* 16 board interrupts -- PCA9575 GPIO expander
* 24 board interrupts -- 88PM860x PMIC
*/
#define TTCDKB_NR_IRQS (IRQ_BOARD_START + 16 + 16 + 24)
static unsigned long ttc_dkb_pin_config[] __initdata = {
/* UART2 */
@ -113,6 +125,22 @@ static struct platform_device *ttc_dkb_devices[] = {
&ttc_dkb_device_onenand,
};
static struct pca953x_platform_data max7312_data[] = {
{
.gpio_base = TTCDKB_GPIO_EXT0(0),
.irq_base = IRQ_BOARD_START,
},
};
static struct i2c_board_info ttc_dkb_i2c_info[] = {
{
.type = "max7312",
.addr = 0x23,
.irq = IRQ_GPIO(80),
.platform_data = &max7312_data,
},
};
static void __init ttc_dkb_init(void)
{
mfp_config(ARRAY_AND_SIZE(ttc_dkb_pin_config));
@ -121,6 +149,7 @@ static void __init ttc_dkb_init(void)
pxa910_add_uart(1);
/* off-chip devices */
pxa910_add_twsi(0, NULL, ARRAY_AND_SIZE(ttc_dkb_i2c_info));
platform_add_devices(ARRAY_AND_SIZE(ttc_dkb_devices));
}