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[ar71xx] register a I2C GPIO expander on the PB44 board
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@16747 3c298f89-4303-0410-b956-a3cf2f4a3e73
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@ -14,6 +14,9 @@
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#include <linux/platform_device.h>
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#include <linux/spi/spi.h>
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#include <linux/spi/flash.h>
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#include <linux/i2c.h>
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#include <linux/i2c-gpio.h>
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#include <linux/i2c/pcf857x.h>
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#include <asm/mips_machine.h>
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#include <asm/mach-ar71xx/ar71xx.h>
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@ -21,6 +24,11 @@
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#include "devices.h"
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#define PB44_GPIO_I2C_SCL 0
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#define PB44_GPIO_I2C_SDA 1
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#define PB44_GPIO_EXP_BASE 16
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static struct spi_board_info pb44_spi_info[] = {
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{
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.bus_num = 0,
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@ -46,6 +54,30 @@ static struct ar71xx_pci_irq pb44_pci_irqs[] __initdata = {
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}
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};
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static struct i2c_gpio_platform_data pb44_i2c_gpio_data = {
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.sda_pin = PB44_GPIO_I2C_SDA,
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.scl_pin = PB44_GPIO_I2C_SCL,
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};
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static struct platform_device pb44_i2c_gpio_device = {
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.name = "i2c-gpio",
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.id = 0,
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.dev = {
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.platform_data = &pb44_i2c_gpio_data,
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}
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};
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static struct pcf857x_platform_data pb44_pcf857x_data = {
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.gpio_base = PB44_GPIO_EXP_BASE,
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};
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static struct i2c_board_info pb44_i2c_board_info[] __initdata = {
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{
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I2C_BOARD_INFO("pcf8575", 0x20),
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.platform_data = &pb44_pcf857x_data,
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},
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};
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#define PB44_WAN_PHYMASK BIT(0)
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#define PB44_LAN_PHYMASK 0
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#define PB44_MDIO_PHYMASK (PB44_LAN_PHYMASK | PB44_WAN_PHYMASK)
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@ -73,6 +105,11 @@ static void __init pb44_init(void)
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ar71xx_pci_init(ARRAY_SIZE(pb44_pci_irqs), pb44_pci_irqs);
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i2c_register_board_info(0, pb44_i2c_board_info,
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ARRAY_SIZE(pb44_i2c_board_info));
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platform_device_register(&pb44_i2c_gpio_device);
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/* TODO: GPIO LEDs & buttons */
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}
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