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567b8e9fed
The mcp2221 driver GPIO output handling has has several issues.
* A wrong value is used for the GPIO direction.
* Wrong offsets are calculated for some GPIO set value/set direction
operations, when offset is larger than 0.
This has been fixed by introducing proper manifest constants for the
direction encoding, and using 'offsetof' when calculating GPIO
register offsets.
The updated driver has been tested with the Sparx5 pcb134/pcb135
board, which has the mcp2221 device with several (output) GPIO's.
Fixes: 328de1c519 ("HID: mcp2221: add GPIO functionality support")
Reviewed-by: Rishi Gupta <gupt21@gmail.com>
Signed-off-by: Lars Povlsen <lars.povlsen@microchip.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Linux kernel
============
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In order to build the documentation, use ``make htmldocs`` or
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https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
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