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| author | Mugunthan V N <mugunthanvnm@ti.com> | 2012-07-17 08:09:49 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-07-18 09:40:54 -0700 |
| commit | 8e476d9da7e28199b1316fca69a01920694e1876 (patch) | |
| tree | fbff9ef2d18e7ddcf4ab38d51d88d858d9975d79 /drivers | |
| parent | ed36d7b2578e4235d7c281304c14e4085f286236 (diff) | |
| download | linux-stable-8e476d9da7e28199b1316fca69a01920694e1876.tar.gz linux-stable-8e476d9da7e28199b1316fca69a01920694e1876.tar.bz2 linux-stable-8e476d9da7e28199b1316fca69a01920694e1876.zip | |
driver: net: ethernet: davinci_mdio: runtime PM support
Enabling runtime PM support for davinci mdio driver
Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/ti/davinci_mdio.c | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/drivers/net/ethernet/ti/davinci_mdio.c b/drivers/net/ethernet/ti/davinci_mdio.c index e4e47088e26b..cd7ee204e94a 100644 --- a/drivers/net/ethernet/ti/davinci_mdio.c +++ b/drivers/net/ethernet/ti/davinci_mdio.c @@ -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 @@ bail_out: 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); |