1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * i2c-gpio interface to platform code 4 * 5 * Copyright (C) 2007 Atmel Corporation 6 */ 7#ifndef _LINUX_I2C_GPIO_H 8#define _LINUX_I2C_GPIO_H 9 10/** 11 * struct i2c_gpio_platform_data - Platform-dependent data for i2c-gpio 12 * @udelay: signal toggle delay. SCL frequency is (500 / udelay) kHz 13 * @timeout: clock stretching timeout in jiffies. If the slave keeps 14 * SCL low for longer than this, the transfer will time out. 15 * @sda_is_open_drain: SDA is configured as open drain, i.e. the pin 16 * isn't actively driven high when setting the output value high. 17 * gpio_get_value() must return the actual pin state even if the 18 * pin is configured as an output. 19 * @scl_is_open_drain: SCL is set up as open drain. Same requirements 20 * as for sda_is_open_drain apply. 21 * @scl_is_output_only: SCL output drivers cannot be turned off. 22 */ 23struct i2c_gpio_platform_data { 24 int udelay; 25 int timeout; 26 unsigned int sda_is_open_drain:1; 27 unsigned int scl_is_open_drain:1; 28 unsigned int scl_is_output_only:1; 29}; 30 31#endif /* _LINUX_I2C_GPIO_H */ 32