linux/drivers/i2c
Jan Weitzel 78e1cf42ee I2C: OMAP: NACK without STP
On OMAP4 OMAP_I2C_STAT_NACK is causing a timeout on the next access.
The isr cleans all flags in OMAP_I2C_CON_REG by setting OMAP_I2C_CON_STP
OMAP_I2C_CON_STP is also set in omap_i2c_xfer_msg on the last message.

According to the TI TSR the sequence for OMAP_I2C_STAT_NACK and
OMAP_I2C_STAT_AL are nearly the same.
Removing the OMAP_I2C_CON_STP part in the isr fix the problem.
Tested on OMAP4430 and OMAP3530 (here NACK was not a problem)
Fixes also booting on 2430sdp.

Signed-off-by: Jan Weitzel <j.weitzel@phytec.de>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-01-17 22:44:54 +00:00
..
algos i2c-algo-bit: Generate correct i2c address sequence for 10-bit target 2011-11-23 11:33:07 +01:00
busses I2C: OMAP: NACK without STP 2012-01-17 22:44:54 +00:00
muxes i2c/gpio-i2cmux: Convert to use module_platform_driver() 2012-01-12 20:32:04 +01:00
i2c-boardinfo.c i2c: add export.h to i2c-boardinfo.c for EXPORT_SYMBOL 2011-10-31 19:31:29 -04:00
i2c-core.c i2c: Fix device name for 10-bit slave address 2011-11-23 11:33:07 +01:00
i2c-core.h
i2c-dev.c i2c-dev: Use memdup_user 2012-01-12 20:32:04 +01:00
i2c-mux.c i2c: Mark i2c_adapter.id as deprecated 2010-11-15 22:40:38 +01:00
i2c-smbus.c i2c: Remove all i2c_set_clientdata(client, NULL) in drivers 2010-06-03 11:33:58 +02:00
Kconfig doc: Kconfig: Typo: square -> squared 2011-07-11 14:22:32 +02:00
Makefile i2c: Deprecate i2c_driver.attach_adapter and .detach_adapter 2011-03-20 14:50:53 +01:00