From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kevin Hilman Subject: [PATCH v4 03/18] I2C: OMAP2+: Introduce I2C IP versioning constants Date: Wed, 1 Jun 2011 17:19:29 -0700 Message-ID: <1306973984-15165-4-git-send-email-khilman@ti.com> References: <1306973984-15165-1-git-send-email-khilman@ti.com> Return-path: In-Reply-To: <1306973984-15165-1-git-send-email-khilman-l0cyMroinI0@public.gmane.org> Sender: linux-i2c-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Ben Dooks , linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: Andy Green , linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org List-Id: linux-i2c@vger.kernel.org From: Andy Green 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-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org Cc: Ben Dooks Reported-by: Peter Maydell Signed-off-by: Andy Green Signed-off-by: Tony Lindgren Signed-off-by: Kevin Hilman --- 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); -- 1.7.4