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OpenCloudOS-Kernel
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[ARM] PCM037 Board: Add I2C support 

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2009-01-28 17:10:32 +01:00
parent c2aaac70cd
commit 792067507b
1 changed files with 51 additions and 0 deletions
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51
arch/arm/mach-mx3/pcm037.c
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@ -26,6 +26,8 @@
#include <linux/gpio.h>
#include <linux/smc911x.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/i2c/at24.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
@ -37,6 +39,9 @@
#include <mach/iomux-mx3.h>
#include <mach/board-pcm037.h>
#include <mach/mxc_nand.h>
#ifdef CONFIG_I2C_IMX
#include <mach/i2c.h>
#endif
#include "devices.h"
@ -117,6 +122,46 @@ static struct mxc_nand_platform_data pcm037_nand_board_info = {
.hw_ecc = 1,
};
#ifdef CONFIG_I2C_IMX
static int i2c_1_pins[] = {
MX31_PIN_CSPI2_MOSI__SCL,
MX31_PIN_CSPI2_MISO__SDA,
};
static int pcm037_i2c_1_init(struct device *dev)
{
return mxc_iomux_setup_multiple_pins(i2c_1_pins, ARRAY_SIZE(i2c_1_pins),
"i2c-1");
}
static void pcm037_i2c_1_exit(struct device *dev)
{
mxc_iomux_release_multiple_pins(i2c_1_pins, ARRAY_SIZE(i2c_1_pins));
}
static struct imxi2c_platform_data pcm037_i2c_1_data = {
.bitrate = 100000,
.init = pcm037_i2c_1_init,
.exit = pcm037_i2c_1_exit,
};
static struct at24_platform_data board_eeprom = {
.byte_len = 4096,
.page_size = 32,
.flags = AT24_FLAG_ADDR16,
};
static struct i2c_board_info pcm037_i2c_devices[] = {
{
I2C_BOARD_INFO("at24", 0x52), /* E0=0, E1=1, E2=0 */
.platform_data = &board_eeprom,
}, {
I2C_BOARD_INFO("rtc-pcf8563", 0x51),
.type = "pcf8563",
}
};
#endif
static struct platform_device *devices[] __initdata = {
&pcm037_flash,
&pcm037_eth,
@ -156,6 +201,12 @@ static void __init mxc_board_init(void)
"pcm037-eth"))
gpio_direction_input(MX31_PIN_GPIO3_1);
#ifdef CONFIG_I2C_IMX
i2c_register_board_info(1, pcm037_i2c_devices,
ARRAY_SIZE(pcm037_i2c_devices));
mxc_register_device(&mxc_i2c_device1, &pcm037_i2c_1_data);
#endif
mxc_register_device(&mxc_nand_device, &pcm037_nand_board_info);
}