i2c: i801: Handle SMBAUXCTL_E32B in i801_block_transaction_by_block only

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Currently we touch SMBAUXCTL even if not needed. That's the case for block
commands that don't use block buffer mode, either because block buffer
mode isn't available or because it's not supported for the respective
command (e.g. I2C block transfer). Improve this by setting/resetting
SMBAUXCTL_E32B in i801_block_transaction_by_block() only.

Small downside is that we now access SMBAUXCTL twice for transactions
that use PEC and block buffer mode. But this should a rather rare case
and the impact is negligible.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

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Heiner Kallweit 2023-02-16 17:11:17 +01:00 • committed by Wolfram Sang

parent dd2d18b5c0

commit 63fd342fd1

1 changed files with 12 additions and 9 deletions

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drivers/i2c/busses/i2c-i801.c

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