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| -rw-r--r-- | arch/arm/plat-nomadik/include/plat/i2c.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/arch/arm/plat-nomadik/include/plat/i2c.h b/arch/arm/plat-nomadik/include/plat/i2c.h new file mode 100644 index 000000000000..1621db67a53d --- /dev/null +++ b/arch/arm/plat-nomadik/include/plat/i2c.h | |||
| @@ -0,0 +1,37 @@ | |||
| 1 | /* | ||
| 2 | * Copyright (C) 2009 ST-Ericsson | ||
| 3 | * | ||
| 4 | * This program is free software; you can redistribute it and/or modify | ||
| 5 | * it under the terms of the GNU General Public License version 2, as | ||
| 6 | * published by the Free Software Foundation. | ||
| 7 | */ | ||
| 8 | #ifndef __PLAT_I2C_H | ||
| 9 | #define __PLAT_I2C_H | ||
| 10 | |||
| 11 | enum i2c_freq_mode { | ||
| 12 | I2C_FREQ_MODE_STANDARD, /* up to 100 Kb/s */ | ||
| 13 | I2C_FREQ_MODE_FAST, /* up to 400 Kb/s */ | ||
| 14 | I2C_FREQ_MODE_FAST_PLUS, /* up to 1 Mb/s */ | ||
| 15 | I2C_FREQ_MODE_HIGH_SPEED /* up to 3.4 Mb/s */ | ||
| 16 | }; | ||
| 17 | |||
| 18 | /** | ||
| 19 | * struct nmk_i2c_controller - client specific controller configuration | ||
| 20 | * @clk_freq: clock frequency for the operation mode | ||
| 21 | * @slsu: Slave data setup time in ns. | ||
| 22 | * The needed setup time for three modes of operation | ||
| 23 | * are 250ns, 100ns and 10ns respectively thus leading | ||
| 24 | * to the values of 14, 6, 2 for a 48 MHz i2c clk | ||
| 25 | * @tft: Tx FIFO Threshold in bytes | ||
| 26 | * @rft: Rx FIFO Threshold in bytes | ||
| 27 | * @sm: speed mode | ||
| 28 | */ | ||
| 29 | struct nmk_i2c_controller { | ||
| 30 | unsigned long clk_freq; | ||
| 31 | unsigned short slsu; | ||
| 32 | unsigned char tft; | ||
| 33 | unsigned char rft; | ||
| 34 | enum i2c_freq_mode sm; | ||
| 35 | }; | ||
| 36 | |||
| 37 | #endif /* __PLAT_I2C_H */ | ||
