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Commit 4892b374 authored by Vignesh R's avatar Vignesh R Committed by Cyrille Pitchen
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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: default avatarVignesh R <vigneshr@ti.com>
Acked-by: default avatarMarek Vasut <marek.vasut@gmail.com>
Signed-off-by: default avatarCyrille Pitchen <cyrille.pitchen@wedev4u.fr>
parent 329864d3

drivers/mtd/spi-nor/cadence-quadspi.c

+15 −1
Original line number Diff line number Diff line
@@ -31,6 +31,7 @@ 
#include <linux/of_device.h>

#include <linux/of.h>

#include <linux/platform_device.h>

#include <linux/pm_runtime.h>

#include <linux/sched.h>

#include <linux/spi/spi.h>

#include <linux/timer.h>
@@ -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 @@ static int cqspi_probe(struct platform_device *pdev) 
	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;

}