mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-12 14:23:00 +00:00
edbf8b4f8c
Since this function can fail, check its return value. Signed-off-by: Simon Glass <sjg@chromium.org> Tested-by: Nikita Kiryanov <nikita@compulab.co.il>
63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
/*
|
|
* 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
|
|
|
|
int 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
|