/* * i2c-gpio interface to platform code * * Copyright (C) 2007 Atmel Corporation * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #ifndef _LINUX_I2C_GPIO_H #define _LINUX_I2C_GPIO_H /** * struct i2c_gpio_platform_data - Platform-dependent data for i2c-gpio * @udelay: signal toggle delay. SCL frequency is (500 / udelay) kHz * @timeout: clock stretching timeout in jiffies. If the slave keeps * SCL low for longer than this, the transfer will time out. * @sda_is_open_drain: SDA is configured as open drain, i.e. the pin * isn't actively driven high when setting the output value high. * gpio_get_value() must return the actual pin state even if the * pin is configured as an output. * @scl_is_open_drain: SCL is set up as open drain. Same requirements * as for sda_is_open_drain apply. * @scl_is_output_only: SCL output drivers cannot be turned off. */ struct i2c_gpio_platform_data { int udelay; int timeout; unsigned int sda_is_open_drain:1; unsigned int scl_is_open_drain:1; unsigned int scl_is_output_only:1; }; #endif /* _LINUX_I2C_GPIO_H */