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Commit 8e476d9d authored by Mugunthan V N's avatar Mugunthan V N Committed by David S. Miller
Browse files

driver: net: ethernet: davinci_mdio: runtime PM support 



Enabling runtime PM support for davinci mdio driver

Signed-off-by: default avatarMugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ed36d7b2

drivers/net/ethernet/ti/davinci_mdio.c

+12 −13
Original line number Diff line number Diff line
@@ -34,6 +34,7 @@ 
#include <linux/clk.h>

#include <linux/err.h>

#include <linux/io.h>

#include <linux/pm_runtime.h>

#include <linux/davinci_emac.h>



/*
@@ -321,7 +322,9 @@ static int __devinit davinci_mdio_probe(struct platform_device *pdev) 
	snprintf(data->bus->id, MII_BUS_ID_SIZE, "%s-%x",

		pdev->name, pdev->id);



	data->clk = clk_get(dev, NULL);

	pm_runtime_enable(&pdev->dev);

	pm_runtime_get_sync(&pdev->dev);

	data->clk = clk_get(&pdev->dev, "fck");

	if (IS_ERR(data->clk)) {

		dev_err(dev, "failed to get device clock\n");

		ret = PTR_ERR(data->clk);
@@ -329,8 +332,6 @@ static int __devinit davinci_mdio_probe(struct platform_device *pdev) 
		goto bail_out;

	}



	clk_enable(data->clk);



	dev_set_drvdata(dev, data);

	data->dev = dev;

	spin_lock_init(&data->lock);
@@ -378,10 +379,10 @@ static int __devinit davinci_mdio_probe(struct platform_device *pdev) 
	if (data->bus)

		mdiobus_free(data->bus);



	if (data->clk) {

		clk_disable(data->clk);

	if (data->clk)

		clk_put(data->clk);

	}

	pm_runtime_put_sync(&pdev->dev);

	pm_runtime_disable(&pdev->dev);



	kfree(data);
@@ -396,10 +397,10 @@ static int __devexit davinci_mdio_remove(struct platform_device *pdev) 
	if (data->bus)

		mdiobus_free(data->bus);



	if (data->clk) {

		clk_disable(data->clk);

	if (data->clk)

		clk_put(data->clk);

	}

	pm_runtime_put_sync(&pdev->dev);

	pm_runtime_disable(&pdev->dev);



	dev_set_drvdata(dev, NULL);
@@ -421,8 +422,7 @@ static int davinci_mdio_suspend(struct device *dev) 
	__raw_writel(ctrl, &data->regs->control);

	wait_for_idle(data);



	if (data->clk)

		clk_disable(data->clk);

	pm_runtime_put_sync(data->dev);



	data->suspended = true;

	spin_unlock(&data->lock);
@@ -436,8 +436,7 @@ static int davinci_mdio_resume(struct device *dev) 
	u32 ctrl;



	spin_lock(&data->lock);

	if (data->clk)

		clk_enable(data->clk);

	pm_runtime_put_sync(data->dev);



	/* restart the scan state machine */

	ctrl = __raw_readl(&data->regs->control);