[ARM] PCM038 board: Add I2C support
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
diff --git a/arch/arm/mach-mx2/pcm038.c b/arch/arm/mach-mx2/pcm038.c
index d246eb1..7d935e1 100644
--- a/arch/arm/mach-mx2/pcm038.c
+++ b/arch/arm/mach-mx2/pcm038.c
@@ -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 @@
__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 @@
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