From 4892b374c9b79729da33bf94612588a6556709be Mon Sep 17 00:00:00 2001 From: Vignesh R Date: Tue, 3 Oct 2017 10:49:25 +0530 Subject: mtd: spi-nor: cadence-quadspi: Add runtime PM support Add pm_runtime* calls to cadence-quadspi driver. This is required to switch on QSPI power domain on TI 66AK2G SoC during probe. Signed-off-by: Vignesh R Acked-by: Marek Vasut Signed-off-by: Cyrille Pitchen --- drivers/mtd/spi-nor/cadence-quadspi.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) (limited to 'drivers/mtd') diff --git a/drivers/mtd/spi-nor/cadence-quadspi.c b/drivers/mtd/spi-nor/cadence-quadspi.c index 60b557e00cfb..75a2bc447a99 100644 --- a/drivers/mtd/spi-nor/cadence-quadspi.c +++ b/drivers/mtd/spi-nor/cadence-quadspi.c @@ -31,6 +31,7 @@ #include #include #include +#include #include #include #include @@ -1224,10 +1225,17 @@ static int cqspi_probe(struct platform_device *pdev) return -ENXIO; } + pm_runtime_enable(dev); + ret = pm_runtime_get_sync(dev); + if (ret < 0) { + pm_runtime_put_noidle(dev); + return ret; + } + ret = clk_prepare_enable(cqspi->clk); if (ret) { dev_err(dev, "Cannot enable QSPI clock.\n"); - return ret; + goto probe_clk_failed; } cqspi->master_ref_clk_hz = clk_get_rate(cqspi->clk); @@ -1259,6 +1267,9 @@ probe_setup_failed: cqspi_controller_enable(cqspi, 0); probe_irq_failed: clk_disable_unprepare(cqspi->clk); +probe_clk_failed: + pm_runtime_put_sync(dev); + pm_runtime_disable(dev); return ret; } @@ -1275,6 +1286,9 @@ static int cqspi_remove(struct platform_device *pdev) clk_disable_unprepare(cqspi->clk); + pm_runtime_put_sync(&pdev->dev); + pm_runtime_disable(&pdev->dev); + return 0; } -- cgit v1.2.3