diff options
Diffstat (limited to 'target/linux')
| -rw-r--r-- | target/linux/ar71xx/files/arch/mips/ar71xx/mach-pb44.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/target/linux/ar71xx/files/arch/mips/ar71xx/mach-pb44.c b/target/linux/ar71xx/files/arch/mips/ar71xx/mach-pb44.c index 5d98ea5d14..df5b954ca6 100644 --- a/target/linux/ar71xx/files/arch/mips/ar71xx/mach-pb44.c +++ b/target/linux/ar71xx/files/arch/mips/ar71xx/mach-pb44.c @@ -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 */ } |