diff options
| author | Hartley Sweeten <hartleys@visionengravers.com> | 2008-10-16 23:57:03 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-12-01 17:22:08 +0000 |
| commit | d52a26a956d3925c6eaf8770e95e4d5f13740696 (patch) | |
| tree | 0b9ef416c97745295d042a1e0f9c04c868caaf57 /arch | |
| parent | 4c5744ed59ac8c7312399f279b96e6e3d8f95b5d (diff) | |
[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: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-ep93xx/core.c | 22 | ||||
| -rw-r--r-- | arch/arm/mach-ep93xx/include/mach/platform.h | 1 |
2 files changed, 23 insertions, 0 deletions
diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c index 48345fb3461..61da67f31ce 100644 --- a/arch/arm/mach-ep93xx/core.c +++ b/arch/arm/mach-ep93xx/core.c @@ -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) diff --git a/arch/arm/mach-ep93xx/include/mach/platform.h b/arch/arm/mach-ep93xx/include/mach/platform.h index db2489d3bda..88f7e88f152 100644 --- a/arch/arm/mach-ep93xx/include/mach/platform.h +++ b/arch/arm/mach-ep93xx/include/mach/platform.h @@ -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; |