UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

[ARM] PCM038 board: Add I2C support 

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2009-01-28 13:07:11 +01:00
parent c5d4dbff96
commit a4e9a65a1f
1 changed files with 59 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

59
arch/arm/mach-mx2/pcm038.c
View File

@ -21,11 +21,17 @@
#include <linux/mtd/physmap.h>
#include <linux/mtd/plat-ram.h>
#include <linux/io.h>
#include <linux/i2c.h>
#include <linux/i2c/at24.h>
#include <asm/mach/arch.h>
#include <asm/mach-types.h>
#include <mach/common.h>
#include <mach/hardware.h>
#include <mach/iomux.h>
#ifdef CONFIG_I2C_IMX
#include <mach/i2c.h>
#endif
#include <asm/mach/time.h>
#include <mach/imx-uart.h>
#include <mach/board-pcm038.h>
@ -204,6 +210,51 @@ static void __init pcm038_init_sram(void)
__raw_writel(0x22220a00, CSCR_A(1));
}
#ifdef CONFIG_I2C_IMX
static int mxc_i2c1_pins[] = {
PC5_PF_I2C2_SDA,
PC6_PF_I2C2_SCL
};
static int pcm038_i2c_1_init(struct device *dev)
{
return mxc_gpio_setup_multiple_pins(mxc_i2c1_pins, ARRAY_SIZE(mxc_i2c1_pins),
"I2C1");
}
static void pcm038_i2c_1_exit(struct device *dev)
{
mxc_gpio_release_multiple_pins(mxc_i2c1_pins, ARRAY_SIZE(mxc_i2c1_pins));
}
static struct imxi2c_platform_data pcm038_i2c_1_data = {
.bitrate = 100000,
.init = pcm038_i2c_1_init,
.exit = pcm038_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 pcm038_i2c_devices[] = {
[0] = {
I2C_BOARD_INFO("at24", 0x52), /* E0=0, E1=1, E2=0 */
.platform_data = &board_eeprom,
},
[1] = {
I2C_BOARD_INFO("rtc-pcf8563", 0x51),
.type = "pcf8563"
},
[2] = {
I2C_BOARD_INFO("lm75", 0x4a),
.type = "lm75"
}
};
#endif
static void __init pcm038_init(void)
{
gpio_fec_active();
@ -216,6 +267,14 @@ static void __init pcm038_init(void)
mxc_gpio_mode(PE16_AF_OWIRE);
mxc_register_device(&mxc_nand_device, &pcm038_nand_board_info);
#ifdef CONFIG_I2C_IMX
/* only the i2c master 1 is used on this CPU card */
i2c_register_board_info(1, pcm038_i2c_devices,
ARRAY_SIZE(pcm038_i2c_devices));
mxc_register_device(&mxc_i2c_device1, &pcm038_i2c_1_data);
#endif
platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
#ifdef CONFIG_MACH_PCM970_BASEBOARD