On Sun, Nov 15, 2015 at 12:33:03PM +0100, Christian Fetzer wrote: > The SB800 chipset supports a multiplexed main SMBus controller with > four ports. The multiplexed ports share the same SMBus address and > register set. The port is selected by bits 2:1 of the smb_en register > (0x2C). > > Only one port can be active at any point in time therefore a mutex is > needed in order to synchronize access. > > Additionally, the commit avoids requesting and releasing the SMBus base > address index region on every multiplexed transfer by moving the > request_region call into piix4_probe. > > Tested on HP ProLiant MicroServer G7 N54L (where this patch adds > support to access sensor data from the w83795adg). > > Cc: Thomas Brandon <tbrandonau@xxxxxxxxx> > Cc: Eddi De Pieri <eddi@xxxxxxxxxxx> > Signed-off-by: Christian Fetzer <fetzer.ch@xxxxxxxxx> Reviewed-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
