1 /*
2  * i2c-gpio interface to platform code
3  *
4  * Copyright (C) 2007 Atmel Corporation
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 as
8  * published by the Free Software Foundation.
9  */
10 #ifndef _LINUX_I2C_GPIO_H
11 #define _LINUX_I2C_GPIO_H
12 
13 /**
14  * struct i2c_gpio_platform_data - Platform-dependent data for i2c-gpio
15  * @udelay: signal toggle delay. SCL frequency is (500 / udelay) kHz
16  * @timeout: clock stretching timeout in jiffies. If the slave keeps
17  *	SCL low for longer than this, the transfer will time out.
18  * @sda_is_open_drain: SDA is configured as open drain, i.e. the pin
19  *	isn't actively driven high when setting the output value high.
20  *	gpio_get_value() must return the actual pin state even if the
21  *	pin is configured as an output.
22  * @scl_is_open_drain: SCL is set up as open drain. Same requirements
23  *	as for sda_is_open_drain apply.
24  * @scl_is_output_only: SCL output drivers cannot be turned off.
25  */
26 struct i2c_gpio_platform_data {
27 	int		udelay;
28 	int		timeout;
29 	unsigned int	sda_is_open_drain:1;
30 	unsigned int	scl_is_open_drain:1;
31 	unsigned int	scl_is_output_only:1;
32 };
33 
34 #endif /* _LINUX_I2C_GPIO_H */
35