Manjunatha GK 57eb81b14e i2c-omap: OMAP3: Fix I2C lockup during timeout/error cases ... Current OMAP3 I2C driver code does not follow the correct sequence for soft reset. Due to this, lock up issues are reported during timeout/error cases. This patch fixes above issue by disabling I2C controller as per OMAP3430 TRM for soft reset. As per TRM, I2C controller needs to be disabled as a first step during soft reset. Here is correct soft reset sequence: a. Ensure that the module is disabled (clear the I2Ci.I2C_CON[15] I2C_EN bit to 0). b. Set the I2Ci.I2C_SYSC[1] SRST bit to 1. c. Enable the module by setting I2Ci.I2C_CON[15] I2C_EN bit to 1. d. Check the I2Ci.I2C_SYSS[0] RDONE bit until it is set to 1 to indicate the software reset is complete. Tested on Zoom2, Zoom3, 3430SDP and 3630SDP Signed-off-by: Manjunatha GK <manjugk@ti.com> Signed-off-by: George, Harith<harith@ti.com> Acked-by: Varadarajan, Charu Latha<charu@ti.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>		2009-12-24 01:30:54 +00:00
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algos	i2c-algo-pca: Let PCA9564 recover from unacked data byte (state 0x30)	2009-05-05 08:39:25 +02:00
busses	i2c-omap: OMAP3: Fix I2C lockup during timeout/error cases	2009-12-24 01:30:54 +00:00
chips	i2c/chips: Move ds1682 to drivers/misc	2009-12-06 17:06:16 +01:00
i2c-boardinfo.c	i2c: Use rwsem instead of mutex for board info	2009-06-19 16:58:20 +02:00
i2c-core.c	i2c-core: i2c bus should support PM entries in struct dev_pm_ops	2009-12-14 21:17:30 +01:00
i2c-core.h	i2c: Use rwsem instead of mutex for board info	2009-06-19 16:58:20 +02:00
i2c-dev.c	i2c: Remove big kernel lock from i2cdev_open	2009-12-06 17:06:26 +01:00
Kconfig	i2c: Prevent priority inversion on top of bus lock	2009-12-06 17:06:22 +01:00
Makefile