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I2C: OMAP2+: Introduce I2C IP versioning constants

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These represent the two kinds of (incompatible) OMAP I2C
peripheral unit in use so far.

The constants are in linux/i2c-omap.h so the omap i2c driver can have
them too.

Cc: patches@linaro.org
Cc: Ben Dooks <ben-linux@fluff.org>
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andy Green <andy.green@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
This commit is contained in:
Andy Green 2011-07-10 05:27:14 -06:00 committed by Paul Walmsley
parent 7300272160
commit d72fe7883f
2 changed files with 13 additions and 0 deletions
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1
arch/arm/plat-omap/include/plat/i2c.h
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@ -22,6 +22,7 @@
#define __ASM__ARCH_OMAP_I2C_H
#include <linux/i2c.h>
#include <linux/i2c-omap.h>
#if defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)
extern int omap_register_i2c_bus(int bus_id, u32 clkrate,

12
include/linux/i2c-omap.h
View file

@ -3,6 +3,18 @@
#include <linux/platform_device.h>
/*
* Version 2 of the I2C peripheral unit has a different register
* layout and extra registers. The ID register in the V2 peripheral
* unit on the OMAP4430 reports the same ID as the V1 peripheral
* unit on the OMAP3530, so we must inform the driver which IP
* version we know it is running on from platform / cpu-specific
* code using these constants in the hwmod class definition.
*/
#define OMAP_I2C_IP_VERSION_1 1
#define OMAP_I2C_IP_VERSION_2 2
struct omap_i2c_bus_platform_data {
u32 clkrate;
void (*set_mpu_wkup_lat)(struct device *dev, long set);