From: Srinidhi Kasagar Date: Mon, 1 Feb 2010 13:58:22 +0000 (+0100) Subject: ARM: 5908/1: nomadik: add platform specific i2c configuration X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=e208c447bd728920e4f3d438a706344ea31249b9;p=linux-beck.git ARM: 5908/1: nomadik: add platform specific i2c configuration This adds the platform specific i2c configuration data structures to setup the nomadik/ux500 i2c block. Signed-off-by: srinidhi kasagar Signed-off-by: Russell King --- 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 @@ +/* + * 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 + * @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; +}; + +#endif /* __PLAT_I2C_H */