Fintek F81866 is a SuperIO. It contains HWMON/GPIO/Serial Ports. and it has totally 72(9x8 sets) gpio pins.
Here is the PDF spec: http://www.alldatasheet.com/datasheet-pdf/pdf/459085/FINTEK/F81866AD-I.html The control method is the same with F7188x, but we should care the address of GPIO8x. GPIO address is below: GPIO0x based: 0xf0 GPIO1x based: 0xe0 GPIO2x based: 0xd0 GPIO3x based: 0xc0 GPIO4x based: 0xb0 GPIO5x based: 0xa0 GPIO6x based: 0x90 GPIO7x based: 0x80 GPIO8x based: 0x88 <-- not 0x70. Change Log: V2: 1. V1 contains 2 patches, first is add F81866 and second is a filter to find enabled GPIO. But Simon say some mainboard maybe configure the SuperIO with wrong setting. So the V2 patch only implements F81866 GPIO control method the same with F7188x. Peter Hung (1): gpio-f7188x: Add F81866 GPIO supports drivers/gpio/Kconfig | 4 ++-- drivers/gpio/gpio-f7188x.c | 27 ++++++++++++++++++++++++--- 2 files changed, 26 insertions(+), 5 deletions(-) -- Change Log: V2 1.9.1
