diff options
| author | Andy Green <andy@warmcat.com> | 2011-09-26 17:41:19 +0100 |
|---|---|---|
| committer | Andy Green <andy.green@linaro.org> | 2011-09-26 17:41:19 +0100 |
| commit | d528556e36b44ed3931390986e59a58920ac2202 (patch) | |
| tree | 5a05b51a4d4cce27417d31d20011fad86901f8ff /include | |
| parent | fdb1c2be84fa35de9f08826cc3584c8c974ae988 (diff) | |
I2C: OMAP2+: Introduce I2C IP versioning constants
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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/i2c-omap.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/i2c-omap.h b/include/linux/i2c-omap.h index 7472449cbb74..701886da76c7 100644 --- a/include/linux/i2c-omap.h +++ b/include/linux/i2c-omap.h @@ -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); |