spi: sprd: adi: Change hwlock to be optional

Browse source

Now Spreadtrum ADI controller supplies multiple master accessing channel
to support multiple subsystems accessing, instead of using a hardware
spinlock to synchronize between the multiple subsystems.

To keep backward compatibility, we should change the hardware spinlock
to be optional. Moreover change to use of_hwspin_lock_get_id() function
which return -ENOENT error number to indicate no hwlock support.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Link: https://lore.kernel.org/r/2abe7dcf210e4197f8c5ece7fc6d6cc1eda8c655.1564125131.git.baolin.wang@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>

...

This commit is contained in:

Baolin Wang 2019-07-26 15:20:52 +08:00 • committed by Mark Brown

parent e6d722ca09

commit f9adf61e98

No known key found for this signature in database

GPG key ID: 24D68B725D5487D0

1 changed files with 42 additions and 26 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

66

drivers/spi/spi-sprd-adi.c

View file