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[v2,0/3] Enable ACPI-defined peripherals on i2c-piix4 SMBus

Message ID cover.1513215039.git.andrew.cooks@opengear.com
Headers show
Series Enable ACPI-defined peripherals on i2c-piix4 SMBus | expand

Message

Andrew Cooks Dec. 14, 2017, 3:11 a.m. UTC 
These patches add ACPI-based enumeration to the i2c-piix4 driver.

Some I2C peripherals, eg. PCA953x IO expander, are not discovered by the
probe or detect mechanisms when attached to an SMBus controller that uses
the i2c-piix4 SMBus driver.

ACPI provides a mechanism to define these peripherals and the controller
port that they're attached to.

v2:
  count the adapters, instead of misusing port numbers

Andrew Cooks (3):
  i2c: piix4: Fix SMBus port selection for AMD Family 16h chips
  i2c: piix4: fix number of SMBus ports on HUDSON2
  i2c: add ACPI support for i2c-piix4

 drivers/i2c/busses/i2c-piix4.c | 41 ++++++++++++++++++++++++++++++-----------
 1 file changed, 30 insertions(+), 11 deletions(-)