40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
/*
|
|
* 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 */
|