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Commit e04eb14f authored by Haojian Zhuang's avatar Haojian Zhuang Committed by Eric Miao
Browse files

ARM: mmp/dkb: enable max7312 gpio expander 



Support max7312 gpio expander in TTC DKB.

Signed-off-by: default avatarHaojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: default avatarEric Miao <eric.y.miao@gmail.com>
parent f16e05c7

arch/arm/mach-mmp/ttc_dkb.c

+30 −1
Original line number Diff line number Diff line
@@ -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));

}