| /* | |
| * 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 */ |