blob: 4ed4e27d13685f881b4e053356395dec93e7f881 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
/*
* 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_FAST_PLUS, /* up to 1 Mb/s */
I2C_FREQ_MODE_HIGH_SPEED /* up to 3.4 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 */
|
