diff options
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-cadence-quadspi.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/spi/spi-cadence-quadspi.c b/drivers/spi/spi-cadence-quadspi.c index d4a2b72985da..53829eb5eca0 100644 --- a/drivers/spi/spi-cadence-quadspi.c +++ b/drivers/spi/spi-cadence-quadspi.c @@ -1824,17 +1824,30 @@ static void cqspi_remove(struct platform_device *pdev) static int cqspi_suspend(struct device *dev) { struct cqspi_st *cqspi = dev_get_drvdata(dev); + struct spi_master *master = dev_get_drvdata(dev); + int ret; + ret = spi_master_suspend(master); cqspi_controller_enable(cqspi, 0); - return 0; + + clk_disable_unprepare(cqspi->clk); + + return ret; } static int cqspi_resume(struct device *dev) { struct cqspi_st *cqspi = dev_get_drvdata(dev); + struct spi_master *master = dev_get_drvdata(dev); - cqspi_controller_enable(cqspi, 1); - return 0; + clk_prepare_enable(cqspi->clk); + cqspi_wait_idle(cqspi); + cqspi_controller_init(cqspi); + + cqspi->current_cs = -1; + cqspi->sclk = 0; + + return spi_master_resume(master); } static const struct dev_pm_ops cqspi__dev_pm_ops = { |