1 /* 2 * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved. 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 #ifndef __ASM_ARCH_MXC_MXC_I2C_H__ 7 #define __ASM_ARCH_MXC_MXC_I2C_H__ 8 #include <asm/imx-common/iomux-v3.h> 9 10 struct i2c_pin_ctrl { 11 iomux_v3_cfg_t i2c_mode; 12 iomux_v3_cfg_t gpio_mode; 13 unsigned char gp; 14 unsigned char spare; 15 }; 16 17 struct i2c_pads_info { 18 struct i2c_pin_ctrl scl; 19 struct i2c_pin_ctrl sda; 20 }; 21 22 #if defined(CONFIG_MX6QDL) 23 #define I2C_PADS(name, scl_i2c, scl_gpio, scl_gp, sda_i2c, sda_gpio, sda_gp) \ 24 struct i2c_pads_info mx6q_##name = { \ 25 .scl = { \ 26 .i2c_mode = MX6Q_##scl_i2c, \ 27 .gpio_mode = MX6Q_##scl_gpio, \ 28 .gp = scl_gp, \ 29 }, \ 30 .sda = { \ 31 .i2c_mode = MX6Q_##sda_i2c, \ 32 .gpio_mode = MX6Q_##sda_gpio, \ 33 .gp = sda_gp, \ 34 } \ 35 }; \ 36 struct i2c_pads_info mx6s_##name = { \ 37 .scl = { \ 38 .i2c_mode = MX6DL_##scl_i2c, \ 39 .gpio_mode = MX6DL_##scl_gpio, \ 40 .gp = scl_gp, \ 41 }, \ 42 .sda = { \ 43 .i2c_mode = MX6DL_##sda_i2c, \ 44 .gpio_mode = MX6DL_##sda_gpio, \ 45 .gp = sda_gp, \ 46 } \ 47 }; 48 49 50 #define I2C_PADS_INFO(name) \ 51 (is_cpu_type(MXC_CPU_MX6Q) || is_cpu_type(MXC_CPU_MX6D)) ? \ 52 &mx6q_##name : &mx6s_##name 53 #endif 54 55 int setup_i2c(unsigned i2c_index, int speed, int slave_addr, 56 struct i2c_pads_info *p); 57 void bus_i2c_init(void *base, int speed, int slave_addr, 58 int (*idle_bus_fn)(void *p), void *p); 59 int bus_i2c_read(void *base, uchar chip, uint addr, int alen, uchar *buf, 60 int len); 61 int bus_i2c_write(void *base, uchar chip, uint addr, int alen, 62 const uchar *buf, int len); 63 #endif 64