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Srinidhi Kasagar
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Russell King
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Feb 4, 2010
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refs/heads/master: e208c447bd728920e4f3d438a706344ea31249b9 |
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/* | ||
* 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 | ||
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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 */ | ||
}; | ||
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/** | ||
* 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 | ||
* @sm: speed mode | ||
*/ | ||
struct nmk_i2c_controller { | ||
unsigned long clk_freq; | ||
unsigned short slsu; | ||
unsigned char tft; | ||
unsigned char rft; | ||
enum i2c_freq_mode sm; | ||
}; | ||
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#endif /* __PLAT_I2C_H */ |