11 Jan, 2011

1 commit

• 92ed1a76c   i2c: Add generic I2C multiplexer using GPIO API ... Browse Code »

  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

  Peter Korsgaard

  2011-01-11 05:11:23 +0800