i2c: piix4: Add EFCH MMIO support to region request and release

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EFCH cd6h/cd7h port I/O may no longer be available on later AMD
processors and it is recommended to use MMIO instead. Update the
request and release functions to support MMIO.

MMIO request/release and mmapping require details during cleanup.
Add a MMIO configuration structure containing resource and vaddress
details for mapping the region, accessing the region, and releasing
the region.

Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
[wsa: rebased after fixup in previous patch]
Signed-off-by: Wolfram Sang <wsa@kernel.org>

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Terry Bowman 2022-02-09 11:27:14 -06:00 • committed by Wolfram Sang

parent fbafbd51bf

commit 7c148722d0

1 changed files with 58 additions and 8 deletions

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drivers/i2c/busses/i2c-piix4.c

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