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 <srinidhi.kasagar@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/plat-nomadik/include/plat/i2c.h b/arch/arm/plat-nomadik/include/plat/i2c.h
new file mode 100644 (file)
index 0000000..1621db6
--- /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 */