kernel.git/drivers/i2c/muxes, branch linux-3.6.y

i2c-mux-pinctrl: Fix probe error path

2012-11-26T20:14:10Z

commit aa1e3e81e75ceb3d977c3292cefafcd5179eb8b8 upstream. When allocating the memory for i2c busses, the code checked the wrong variable and thus never detected if there was a memory error. Signed-off-by: Guenter Roeck Signed-off-by: Jean Delvare Signed-off-by: Greg Kroah-Hartman

i2c: Update Guenter Roeck's e-mail address

2012-07-24T12:13:56Z

My old e-mail address won't be valid for much longer. Time to update it. Signed-off-by: Guenter Roeck Signed-off-by: Jean Delvare

i2c: Add generic I2C multiplexer using pinctrl API

2012-06-04T14:49:43Z

This is useful for SoCs whose I2C module's signals can be routed to different sets of pins at run-time, using the pinctrl API. +-----+ +-----+ | dev | | dev | +------------------------+ +-----+ +-----+ | SoC | | | | /----|------+--------+ | +---+ +------+ | child bus A, on first set of pins | |I2C|---|Pinmux| | | +---+ +------+ | child bus B, on second set of pins | \----|------+--------+--------+ | | | | | +------------------------+ +-----+ +-----+ +-----+ | dev | | dev | | dev | +-----+ +-----+ +-----+ Signed-off-by: Stephen Warren Acked-by: Linus Walleij Acked-by: Rob Herring Signed-off-by: Wolfram Sang

i2c: Rename last mux driver to standard pattern

2012-05-12T12:28:18Z

Update the MAINTAINERS entry and all other references accordingly. Based on an original patch by Wolfram Sang. Signed-off-by: Jean Delvare Acked-by: Peter Korsgaard [wsa: fixed merge conflict due to rework in i2c_add_mux_adapter()] Signed-off-by: Wolfram Sang

i2c: muxes: rename first set of drivers to a standard pattern

2012-05-12T12:28:17Z

Apply a naming pattern like in the rest of the subsystem to a first set of mux drivers. Those drivers are the low-hanging fruit; we want to pick them to motivate upcoming drivers to follow the new pattern. The missing GPIO driver will be converted in a later patch. Signed-off-by: Wolfram Sang Acked-by: Guenter Roeck (pca9541) Acked-by: Jean Delvare

i2c: Add a struct device * parameter to i2c_add_mux_adapter()

2012-05-12T12:28:15Z

And adjust all callers. The new device parameter is used in the next patch to initialize the mux's of_node so that its children may be automatically populated. Signed-off-by: David Daney Tested-by: Lars-Peter Clausen Signed-off-by: Wolfram Sang

i2c: Convert drivers/i2c/muxes/* to use module_i2c_driver()

2012-03-26T19:47:19Z

This patch converts the drivers in drivers/i2c/muxes/* to use the module_i2c_driver() macro which makes the code smaller and a bit simpler. Signed-off-by: Axel Lin Acked-by: Wolfram Sang Cc: Guenter Roeck Cc: Michael Lawnick Cc: Ben Dooks Signed-off-by: Jean Delvare

i2c/gpio-i2cmux: Convert to use module_platform_driver()

2012-01-12T19:32:04Z

Convert gpio-i2cmux to use the module_platform_driver() macro which makes the code smaller and a bit simpler. Signed-off-by: Axel Lin Acked-by: Peter Korsgaard Signed-off-by: Jean Delvare

i2c/pca954x: Initialize the mux to disconnected state

2011-06-29T09:36:11Z

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: Add generic I2C multiplexer using GPIO API

2011-01-10T21:11:23Z

Add an i2c mux driver providing access to i2c bus segments using a hardware MUX sitting on a master bus and controlled through gpio pins. E.G. something like: ---------- ---------- Bus segment 1 - - - - - | | SCL/SDA | |-------------- | | | |------------| | | | | | Bus segment 2 | | | Linux | GPIO 1..N | MUX |--------------- Devices | |------------| | | | | | | | Bus segment M | | | |---------------| | ---------- ---------- - - - - - SCL/SDA of the master I2C bus is multiplexed to bus segment 1..M according to the settings of the GPIO pins 1..N. Signed-off-by: Peter Korsgaard Signed-off-by: Jean Delvare