spi: cadence-qspi: add system-wide suspend and resume callbacks

Browse source

Each SPI controller is expected to call the spi_controller_suspend() and
spi_controller_resume() callbacks at system-wide suspend and resume.

It (1) handles the kthread worker for queued controllers and (2) marks
the controller as suspended to have spi_sync() fail while the
controller is unavailable.

Those two operations do not require the controller to be active, we do
not need to increment the runtime PM usage counter.

Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Link: https://msgid.link/r/20240222-cdns-qspi-pm-fix-v4-4-6b6af8bcbf59@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>

...

This commit is contained in:

Théo Lebrun 2024-02-22 11:12:32 +01:00 • committed by Mark Brown

parent 4efa1250b5

commit 078d62de43

No known key found for this signature in database

GPG key ID: 24D68B725D5487D0

1 changed files with 18 additions and 2 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

20

drivers/spi/spi-cadence-quadspi.c

View file