diff options
| author | Théo Lebrun <theo.lebrun@bootlin.com> | 2024-02-22 11:12:32 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2024-02-22 12:25:10 +0000 |
| commit | 078d62de433b4f4556bb676e5dd670f0d4103376 (patch) | |
| tree | ab69c468c02e7dfd3079e5d3ac68298bea3ede46 /drivers/spi | |
| parent | 4efa1250b59ebf47ce64a7b6b7c3e2e0a2a9d35a (diff) | |
| download | linux-078d62de433b4f4556bb676e5dd670f0d4103376.tar.gz | |
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: 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>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-cadence-quadspi.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/spi/spi-cadence-quadspi.c b/drivers/spi/spi-cadence-quadspi.c index 4b2d42e54f568..1a8d03958dffb 100644 --- a/drivers/spi/spi-cadence-quadspi.c +++ b/drivers/spi/spi-cadence-quadspi.c @@ -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, |