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Commit d52a26a9 authored by Hartley Sweeten's avatar Hartley Sweeten Committed by Russell King
Browse files

[ARM] 5311/1: ep93xx: add core support for built in i2c bus 



Allow the ep93xx platform init code to register the built-in i2c bus.

The EP93xx processor has two GPIO pins dedicated for an I2C bus. This
patch registers the platform supplied i2c_board_info and the necessary
platform_device information for the i2c-gpio driver to use these pins.

Signed-off-by: default avatarH Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: default avatarRyan Mallon <ryan@bluewatersys.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 4c5744ed

arch/arm/mach-ep93xx/core.c

+22 −0
Original line number Diff line number Diff line
@@ -34,6 +34,8 @@ 
#include <linux/amba/bus.h>

#include <linux/amba/serial.h>

#include <linux/io.h>

#include <linux/i2c.h>

#include <linux/i2c-gpio.h>



#include <asm/types.h>

#include <asm/setup.h>
@@ -497,6 +499,26 @@ void __init ep93xx_register_eth(struct ep93xx_eth_data *data, int copy_addr) 
	platform_device_register(&ep93xx_eth_device);

}



static struct i2c_gpio_platform_data ep93xx_i2c_data = {

	.sda_pin		= EP93XX_GPIO_LINE_EEDAT,

	.sda_is_open_drain	= 0,

	.scl_pin		= EP93XX_GPIO_LINE_EECLK,

	.scl_is_open_drain	= 0,

	.udelay			= 2,

};



static struct platform_device ep93xx_i2c_device = {

	.name			= "i2c-gpio",

	.id			= 0,

	.dev.platform_data	= &ep93xx_i2c_data,

};



void __init ep93xx_register_i2c(struct i2c_board_info *devices, int num)

{

	i2c_register_board_info(0, devices, num);

	platform_device_register(&ep93xx_i2c_device);

}



extern void ep93xx_gpio_init(void);



void __init ep93xx_init_devices(void)

arch/arm/mach-ep93xx/include/mach/platform.h

+1 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ void ep93xx_map_io(void); 
void ep93xx_init_irq(void);

void ep93xx_init_time(unsigned long);

void ep93xx_register_eth(struct ep93xx_eth_data *data, int copy_addr);

void ep93xx_register_i2c(struct i2c_board_info *devices, int num);

void ep93xx_init_devices(void);

extern struct sys_timer ep93xx_timer;