[ARM] PCM038 board: Add I2C support (a4e9a65a) · Commits · e / devices / android_kernel_fairphone_FP5

arch/arm/mach-mx2/pcm038.c

+59 −0

Original line number	Original line	Diff line number	Diff line
	@@ -21,11 +21,17 @@
	#include <linux/mtd/physmap.h>		#include <linux/mtd/physmap.h>
	#include <linux/mtd/plat-ram.h>		#include <linux/mtd/plat-ram.h>
	#include <linux/io.h>		#include <linux/io.h>
			#include <linux/i2c.h>
			#include <linux/i2c/at24.h>

	#include <asm/mach/arch.h>		#include <asm/mach/arch.h>
	#include <asm/mach-types.h>		#include <asm/mach-types.h>
	#include <mach/common.h>		#include <mach/common.h>
	#include <mach/hardware.h>		#include <mach/hardware.h>
	#include <mach/iomux.h>		#include <mach/iomux.h>
			#ifdef CONFIG_I2C_IMX
			#include <mach/i2c.h>
			#endif
	#include <asm/mach/time.h>		#include <asm/mach/time.h>
	#include <mach/imx-uart.h>		#include <mach/imx-uart.h>
	#include <mach/board-pcm038.h>		#include <mach/board-pcm038.h>
	@@ -204,6 +210,51 @@ static void __init pcm038_init_sram(void)
	__raw_writel(0x22220a00, CSCR_A(1));		__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)		static void __init pcm038_init(void)
	{		{
	gpio_fec_active();		gpio_fec_active();
	@@ -216,6 +267,14 @@ static void __init pcm038_init(void)
	mxc_gpio_mode(PE16_AF_OWIRE);		mxc_gpio_mode(PE16_AF_OWIRE);
	mxc_register_device(&mxc_nand_device, &pcm038_nand_board_info);		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));		platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));

	#ifdef CONFIG_MACH_PCM970_BASEBOARD		#ifdef CONFIG_MACH_PCM970_BASEBOARD