rockchip: pinctrl: rk3368: move IOMUX bit-definitions to pinctrl driver
[oweals/u-boot.git] / arch / arm / include / asm / mach-imx / mxc_i2c.h
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-generic/gpio.h>
9 #include <asm/mach-imx/iomux-v3.h>
10
11 struct i2c_pin_ctrl {
12         iomux_v3_cfg_t i2c_mode;
13         iomux_v3_cfg_t gpio_mode;
14         unsigned char gp;
15         unsigned char spare;
16 };
17
18 struct i2c_pads_info {
19         struct i2c_pin_ctrl scl;
20         struct i2c_pin_ctrl sda;
21 };
22
23 /*
24  * Information about i2c controller
25  * struct mxc_i2c_bus - information about the i2c[x] bus
26  * @index: i2c bus index
27  * @base: Address of I2C bus controller
28  * @driver_data: Flags for different platforms, such as I2C_QUIRK_FLAG.
29  * @speed: Speed of I2C bus
30  * @pads_info: pinctrl info for this i2c bus, will be used when pinctrl is ok.
31  * The following two is only to be compatible with non-DM part.
32  * @idle_bus_fn: function to force bus idle
33  * @idle_bus_data: parameter for idle_bus_fun
34  * For DM:
35  * bus: The device structure for i2c bus controller
36  * scl-gpio: specify the gpio related to SCL pin
37  * sda-gpio: specify the gpio related to SDA pin
38  */
39 struct mxc_i2c_bus {
40         /*
41          * board file can use this index to locate which i2c_pads_info is for
42          * i2c_idle_bus. When pinmux is implement, this entry can be
43          * discarded. Here we do not use dev->seq, because we do not want to
44          * export device to board file.
45          */
46         int index;
47         ulong base;
48         ulong driver_data;
49         int speed;
50         struct i2c_pads_info *pads_info;
51 #ifndef CONFIG_DM_I2C
52         int (*idle_bus_fn)(void *p);
53         void *idle_bus_data;
54 #else
55         struct udevice *bus;
56         /* Use gpio to force bus idle when bus state is abnormal */
57         struct gpio_desc scl_gpio;
58         struct gpio_desc sda_gpio;
59 #endif
60 };
61
62 #if defined(CONFIG_MX6QDL)
63 #define I2C_PADS(name, scl_i2c, scl_gpio, scl_gp, sda_i2c, sda_gpio, sda_gp) \
64         struct i2c_pads_info mx6q_##name = {            \
65                 .scl = {                                \
66                         .i2c_mode = MX6Q_##scl_i2c,     \
67                         .gpio_mode = MX6Q_##scl_gpio,   \
68                         .gp = scl_gp,                   \
69                 },                                      \
70                 .sda = {                                \
71                         .i2c_mode = MX6Q_##sda_i2c,     \
72                         .gpio_mode = MX6Q_##sda_gpio,   \
73                         .gp = sda_gp,                   \
74                 }                                       \
75         };                                              \
76         struct i2c_pads_info mx6s_##name = {            \
77                 .scl = {                                \
78                         .i2c_mode = MX6DL_##scl_i2c,    \
79                         .gpio_mode = MX6DL_##scl_gpio,  \
80                         .gp = scl_gp,                   \
81                 },                                      \
82                 .sda = {                                \
83                         .i2c_mode = MX6DL_##sda_i2c,    \
84                         .gpio_mode = MX6DL_##sda_gpio,  \
85                         .gp = sda_gp,                   \
86                 }                                       \
87         };
88
89
90 #define I2C_PADS_INFO(name)     \
91         (is_cpu_type(MXC_CPU_MX6Q) || is_cpu_type(MXC_CPU_MX6D)) ? \
92                                         &mx6q_##name : &mx6s_##name
93 #endif
94
95 int setup_i2c(unsigned i2c_index, int speed, int slave_addr,
96               struct i2c_pads_info *p);
97 void bus_i2c_init(int index, int speed, int slave_addr,
98                 int (*idle_bus_fn)(void *p), void *p);
99 int force_idle_bus(void *priv);
100 int i2c_idle_bus(struct mxc_i2c_bus *i2c_bus);
101 #endif