From mboxrd@z Thu Jan 1 00:00:00 1970 From: andy@warmcat.com (Andy Green) Date: Tue, 15 Mar 2011 19:56:10 +0000 Subject: [PATCH 3 03/18] I2C: OMAP2+: Introduce I2C IP versioning constants In-Reply-To: <20110315195147.30000.86184.stgit@otae.warmcat.com> References: <20110315195147.30000.86184.stgit@otae.warmcat.com> Message-ID: <20110315195610.30000.4573.stgit@otae.warmcat.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 at linaro.org Cc: Ben Dooks Reported-by: Peter Maydell Signed-off-by: Andy Green --- arch/arm/plat-omap/include/plat/i2c.h | 1 + include/linux/i2c-omap.h | 12 ++++++++++++ 2 files changed, 13 insertions(+), 0 deletions(-) diff --git a/arch/arm/plat-omap/include/plat/i2c.h b/arch/arm/plat-omap/include/plat/i2c.h index 878d632..a1d3d06 100644 --- a/arch/arm/plat-omap/include/plat/i2c.h +++ b/arch/arm/plat-omap/include/plat/i2c.h @@ -22,6 +22,7 @@ #define __ASM__ARCH_OMAP_I2C_H #include +#include #if defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE) extern int omap_register_i2c_bus(int bus_id, u32 clkrate, diff --git a/include/linux/i2c-omap.h b/include/linux/i2c-omap.h index 7472449..701886d 100644 --- a/include/linux/i2c-omap.h +++ b/include/linux/i2c-omap.h @@ -3,6 +3,18 @@ #include +/* + * 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);