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authorSrinidhi Kasagar <srinidhi.kasagar@stericsson.com>2010-02-01 08:58:22 -0500
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-02-04 13:04:50 -0500
commite208c447bd728920e4f3d438a706344ea31249b9 (patch)
treeb4984f98ed2f8da0911a23da71e23643da71ed47 /arch/arm/plat-nomadik/include
parent8e58ed34d926d89969796a0832ab38381a4c90ed (diff)
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>
Diffstat (limited to 'arch/arm/plat-nomadik/include')
-rw-r--r--arch/arm/plat-nomadik/include/plat/i2c.h37
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
11enum 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 */
29struct 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 */