| /* |
| * Copyright (C) 2009 ST-Ericsson |
| * |
| * 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 __PLAT_I2C_H |
| #define __PLAT_I2C_H |
| |
| enum i2c_freq_mode { |
| I2C_FREQ_MODE_STANDARD, /* up to 100 Kb/s */ |
| I2C_FREQ_MODE_FAST, /* up to 400 Kb/s */ |
| I2C_FREQ_MODE_HIGH_SPEED, /* up to 3.4 Mb/s */ |
| I2C_FREQ_MODE_FAST_PLUS, /* up to 1 Mb/s */ |
| }; |
| |
| /** |
| * struct nmk_i2c_controller - client specific controller configuration |
| * @clk_freq: clock frequency for the operation mode |
| * @slsu: Slave data setup time in ns. |
| * The needed setup time for three modes of operation |
| * are 250ns, 100ns and 10ns respectively thus leading |
| * to the values of 14, 6, 2 for a 48 MHz i2c clk |
| * @tft: Tx FIFO Threshold in bytes |
| * @rft: Rx FIFO Threshold in bytes |
| * @timeout Slave response timeout(ms) |
| * @sm: speed mode |
| */ |
| struct nmk_i2c_controller { |
| unsigned long clk_freq; |
| unsigned short slsu; |
| unsigned char tft; |
| unsigned char rft; |
| int timeout; |
| enum i2c_freq_mode sm; |
| }; |
| |
| #endif /* __PLAT_I2C_H */ |
