Unverified Commit 078d62de authored by Théo Lebrun's avatar Théo Lebrun Committed by Mark Brown
Browse files

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



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: default avatarThéo Lebrun <theo.lebrun@bootlin.com>
Link: https://msgid.link/r/20240222-cdns-qspi-pm-fix-v4-4-6b6af8bcbf59@bootlin.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 4efa1250

drivers/spi/spi-cadence-quadspi.c

+18 −2
Original line number Diff line number Diff line
@@ -1949,8 +1949,24 @@ static int cqspi_runtime_resume(struct device *dev) 
	return 0;

}



static DEFINE_RUNTIME_DEV_PM_OPS(cqspi_dev_pm_ops, cqspi_runtime_suspend,

				 cqspi_runtime_resume, NULL);

static int cqspi_suspend(struct device *dev)

{

	struct cqspi_st *cqspi = dev_get_drvdata(dev);



	return spi_controller_suspend(cqspi->host);

}



static int cqspi_resume(struct device *dev)

{

	struct cqspi_st *cqspi = dev_get_drvdata(dev);



	return spi_controller_resume(cqspi->host);

}



static const struct dev_pm_ops cqspi_dev_pm_ops = {

	RUNTIME_PM_OPS(cqspi_runtime_suspend, cqspi_runtime_resume, NULL)

	SYSTEM_SLEEP_PM_OPS(cqspi_suspend, cqspi_resume)

};



static const struct cqspi_driver_platdata cdns_qspi = {

	.quirks = CQSPI_DISABLE_DAC_MODE,