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Code Issues

register a I2C GPIO expander on the PB44 board

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SVN-Revision: 16747
This commit is contained in:
Gabor Juhos 2009-07-09 06:57:44 +00:00
parent db71f38ed6
commit eca1b1ac07
1 changed files with 37 additions and 0 deletions
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37
target/linux/ar71xx/files/arch/mips/ar71xx/mach-pb44.c
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@ -14,6 +14,9 @@
#include <linux/platform_device.h>
#include <linux/spi/spi.h>
#include <linux/spi/flash.h>
#include <linux/i2c.h>
#include <linux/i2c-gpio.h>
#include <linux/i2c/pcf857x.h>
#include <asm/mips_machine.h>
#include <asm/mach-ar71xx/ar71xx.h>
@ -21,6 +24,11 @@
#include "devices.h"
#define PB44_GPIO_I2C_SCL 0
#define PB44_GPIO_I2C_SDA 1
#define PB44_GPIO_EXP_BASE 16
static struct spi_board_info pb44_spi_info[] = {
{
.bus_num = 0,
@ -46,6 +54,30 @@ static struct ar71xx_pci_irq pb44_pci_irqs[] __initdata = {
}
};
static struct i2c_gpio_platform_data pb44_i2c_gpio_data = {
.sda_pin = PB44_GPIO_I2C_SDA,
.scl_pin = PB44_GPIO_I2C_SCL,
};
static struct platform_device pb44_i2c_gpio_device = {
.name = "i2c-gpio",
.id = 0,
.dev = {
.platform_data = &pb44_i2c_gpio_data,
}
};
static struct pcf857x_platform_data pb44_pcf857x_data = {
.gpio_base = PB44_GPIO_EXP_BASE,
};
static struct i2c_board_info pb44_i2c_board_info[] __initdata = {
{
I2C_BOARD_INFO("pcf8575", 0x20),
.platform_data = &pb44_pcf857x_data,
},
};
#define PB44_WAN_PHYMASK BIT(0)
#define PB44_LAN_PHYMASK 0
#define PB44_MDIO_PHYMASK (PB44_LAN_PHYMASK | PB44_WAN_PHYMASK)
@ -73,6 +105,11 @@ static void __init pb44_init(void)
ar71xx_pci_init(ARRAY_SIZE(pb44_pci_irqs), pb44_pci_irqs);
i2c_register_board_info(0, pb44_i2c_board_info,
ARRAY_SIZE(pb44_i2c_board_info));
platform_device_register(&pb44_i2c_gpio_device);
/* TODO: GPIO LEDs & buttons */
}