linux-toradex.git/drivers/i2c, branch 3.0-pcm052-ts2.3

Initial changes to support mcc and i2c semaphore for ping pong demo

2013-03-15T00:37:37+00:00

Signed-off-by: Russell Robinson Jr

ENGR00181363-2: add I2C controller support for Faraday

2012-09-12T20:49:47+00:00

Add the I2C controller support for Faraday.

Enable the I2C0 for Faraday. There are some different with I.MX
for I2C controller, The i2c enable bit is invert with i.mx and the
interrupt clear is w1c on Faraday but w0c on i.mx

As there are more than one devices on the bus, the drive strength
is set to 50ohm, otherwise, some device can not be found.

Signed-off-by: Jason Jin

i2c-algo-bit: Generate correct i2c address sequence for 10-bit target

2011-12-09T16:52:19+00:00

commit cc6bcf7d2ec2234e7b41770185e4dc826390185e upstream.

The wrong bits were put on the wire, fix that.

This fixes kernel bug #42562.

Signed-off-by: Sheng-Hui J. Chu 
Signed-off-by: Jean Delvare 
Signed-off-by: Greg Kroah-Hartman

Merge branch 'for-30-rc5/all-i2c' of git://git.fluff.org/bjdooks/linux

2011-07-07T23:29:29+00:00

* 'for-30-rc5/all-i2c' of git://git.fluff.org/bjdooks/linux:
  i2c-bfin-twi: abort transfer is MEM bit is reset unexpectedly
  i2c-s3c2410: Remove useless break code
  i2c-s3c2410: Fix typo 'i2s' -> 'i2c'
  i2c: tegra: Assign unused slave address

i2c/pca954x: Initialize the mux to disconnected state

2011-06-29T09:36:11+00:00

pca954x power-on default is channel 0 connected. If multiple pca954x
muxes are connected to the same physical I2C bus, the parent bus will
see channel 0 devices behind both muxes by default. This is bad.

Scenario:
            -- pca954x @ 0x70 -- ch 0 (I2C-bus-101) -- EEPROM @ 0x50
            |
I2C-bus-1 ---
            |
            -- pca954x @ 0x71 -- ch 0 (I2C-bus-111) -- EEPROM @ 0x50

1. Load I2C bus driver: creates I2C-bus-1
2. Load pca954x driver: creates virtual I2C-bus-101 and I2C-bus-111
3. Load eeprom driver
4. Try to read EEPROM @ 0x50 on I2C-bus-101. The transaction will also bleed
   onto I2C-bus-111 because pca954x @ 0x71 channel 0 is connected by default.

Fix: Initialize pca954x to disconnected state in pca954x_probe()

Signed-off-by: Petri Gynther 
Signed-off-by: Jean Delvare 
Cc: stable@kernel.org

i2c-taos-evm: Fix log messages

2011-06-29T09:36:10+00:00

* Print all error and information messages even when debugging is
  disabled.
* Don't use adapter device to log messages before it is ready.

Signed-off-by: Jean Delvare 
Cc: stable@kernel.org

Merge branches 'for-30-rc4/i2c-bfin', 'for-30-rc4/i2c-omap', 'for-30-rc4/i2c-s3c' and 'for-30-rc4/i2c-tegra' into for-30-rc5/all-i2c

2011-06-27T22:07:24+00:00

i2c-bfin-twi: abort transfer is MEM bit is reset unexpectedly

2011-06-27T22:06:48+00:00

Sometimes, the first I2C transmit interrupt is not serviced in time (like
when higher priority interrupts take too long).  Since the RESTART bit is
not set before the next I2C clock, when the TWI handler is finally called,
the I2C session is aborted (MEM bit is reset) and both SMITSERV and MCOMP
int status bits are set.

So when this happens, abort the transfer.

Reported-by: Isabelle Leonardi 
Signed-off-by: Sonic Zhang 
Signed-off-by: Mike Frysinger 
Signed-off-by: Ben Dooks

i2c-s3c2410: Remove useless break code

2011-06-27T22:06:05+00:00

Signed-off-by: Jonghwan Choi 
Signed-off-by: Kukjin Kim 
Signed-off-by: Ben Dooks

i2c-s3c2410: Fix typo 'i2s' -> 'i2c'

2011-06-27T22:05:56+00:00

Signed-off-by: Huisung Kang 
Signed-off-by: Kukjin Kim 
Signed-off-by: Ben Dooks