mirror of
https://github.com/AsahiLinux/u-boot
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
99 lines
2.7 KiB
C
99 lines
2.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
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*/
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#ifndef __ASM_ARCH_MXC_MXC_I2C_H__
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#define __ASM_ARCH_MXC_MXC_I2C_H__
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#include <asm-generic/gpio.h>
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#include <asm/mach-imx/iomux-v3.h>
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struct i2c_pin_ctrl {
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iomux_v3_cfg_t i2c_mode;
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iomux_v3_cfg_t gpio_mode;
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unsigned char gp;
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unsigned char spare;
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};
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struct i2c_pads_info {
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struct i2c_pin_ctrl scl;
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struct i2c_pin_ctrl sda;
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};
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/*
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* Information about i2c controller
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* struct mxc_i2c_bus - information about the i2c[x] bus
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* @index: i2c bus index
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* @base: Address of I2C bus controller
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* @driver_data: Flags for different platforms, such as I2C_QUIRK_FLAG.
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* @speed: Speed of I2C bus
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* @pads_info: pinctrl info for this i2c bus, will be used when pinctrl is ok.
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* The following two is only to be compatible with non-DM part.
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* @idle_bus_fn: function to force bus idle
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* @idle_bus_data: parameter for idle_bus_fun
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* For DM:
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* bus: The device structure for i2c bus controller
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* scl-gpio: specify the gpio related to SCL pin
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* sda-gpio: specify the gpio related to SDA pin
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*/
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struct mxc_i2c_bus {
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/*
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* board file can use this index to locate which i2c_pads_info is for
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* i2c_idle_bus. When pinmux is implement, this entry can be
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* discarded. Here we do not use dev->seq, because we do not want to
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* export device to board file.
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*/
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int index;
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ulong base;
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ulong driver_data;
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int speed;
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struct i2c_pads_info *pads_info;
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#ifndef CONFIG_DM_I2C
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int (*idle_bus_fn)(void *p);
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void *idle_bus_data;
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#else
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struct udevice *bus;
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/* Use gpio to force bus idle when bus state is abnormal */
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struct gpio_desc scl_gpio;
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struct gpio_desc sda_gpio;
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#endif
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};
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#if defined(CONFIG_MX6QDL)
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#define I2C_PADS(name, scl_i2c, scl_gpio, scl_gp, sda_i2c, sda_gpio, sda_gp) \
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struct i2c_pads_info mx6q_##name = { \
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.scl = { \
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.i2c_mode = MX6Q_##scl_i2c, \
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.gpio_mode = MX6Q_##scl_gpio, \
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.gp = scl_gp, \
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}, \
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.sda = { \
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.i2c_mode = MX6Q_##sda_i2c, \
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.gpio_mode = MX6Q_##sda_gpio, \
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.gp = sda_gp, \
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} \
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}; \
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struct i2c_pads_info mx6s_##name = { \
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.scl = { \
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.i2c_mode = MX6DL_##scl_i2c, \
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.gpio_mode = MX6DL_##scl_gpio, \
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.gp = scl_gp, \
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}, \
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.sda = { \
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.i2c_mode = MX6DL_##sda_i2c, \
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.gpio_mode = MX6DL_##sda_gpio, \
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.gp = sda_gp, \
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} \
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};
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#define I2C_PADS_INFO(name) \
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(is_mx6dq() || is_mx6dqp()) ? &mx6q_##name : &mx6s_##name
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#endif
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int setup_i2c(unsigned i2c_index, int speed, int slave_addr,
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struct i2c_pads_info *p);
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void bus_i2c_init(int index, int speed, int slave_addr,
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int (*idle_bus_fn)(void *p), void *p);
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int force_idle_bus(void *priv);
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int i2c_idle_bus(struct mxc_i2c_bus *i2c_bus);
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#endif
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