u-boot/arch/arm/include/asm/imx-common/mxc_i2c.h

/*
 * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */
#ifndef __ASM_ARCH_MXC_MXC_I2C_H__
#define __ASM_ARCH_MXC_MXC_I2C_H__
#include <asm/imx-common/iomux-v3.h>

struct i2c_pin_ctrl {
	iomux_v3_cfg_t i2c_mode;
	iomux_v3_cfg_t gpio_mode;
	unsigned char gp;
	unsigned char spare;
};

struct i2c_pads_info {
	struct i2c_pin_ctrl scl;
	struct i2c_pin_ctrl sda;
};

#if defined(CONFIG_MX6QDL)
#define I2C_PADS(name, scl_i2c, scl_gpio, scl_gp, sda_i2c, sda_gpio, sda_gp) \
	struct i2c_pads_info mx6q_##name = {		\
		.scl = {				\
			.i2c_mode = MX6Q_##scl_i2c,	\
			.gpio_mode = MX6Q_##scl_gpio,	\
			.gp = scl_gp,			\
		},					\
		.sda = {				\
			.i2c_mode = MX6Q_##sda_i2c,	\
			.gpio_mode = MX6Q_##sda_gpio,	\
			.gp = sda_gp,			\
		}					\
	};						\
	struct i2c_pads_info mx6s_##name = {		\
		.scl = {				\
			.i2c_mode = MX6DL_##scl_i2c,	\
			.gpio_mode = MX6DL_##scl_gpio,	\
			.gp = scl_gp,			\
		},					\
		.sda = {				\
			.i2c_mode = MX6DL_##sda_i2c,	\
			.gpio_mode = MX6DL_##sda_gpio,	\
			.gp = sda_gp,			\
		}					\
	};


#define I2C_PADS_INFO(name)	\
	(is_cpu_type(MXC_CPU_MX6Q) || is_cpu_type(MXC_CPU_MX6D)) ? \
					&mx6q_##name : &mx6s_##name
#endif

void setup_i2c(unsigned i2c_index, int speed, int slave_addr,
		struct i2c_pads_info *p);
void bus_i2c_init(void *base, int speed, int slave_addr,
		int (*idle_bus_fn)(void *p), void *p);
int bus_i2c_read(void *base, uchar chip, uint addr, int alen, uchar *buf,
		int len);
int bus_i2c_write(void *base, uchar chip, uint addr, int alen,
		const uchar *buf, int len);
#endif