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drivers: net: davinci_mdio: add pm runtime callbacks 

Add PM runtime .runtime_suspend()/.runtime_resume() callbacks and
perform Davinci MDIO enabling/disabling from these callbacks. This
allows to reuse pm_runtime_force_suspend/resume() APIs during System
suspend and required for further implementation of PM runtime
autosuspend.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Grygorii Strashko 2016-06-24 21:23:50 +03:00 committed by David S. Miller
parent 28f0ccb995
commit 651652aace
1 changed files with 27 additions and 4 deletions
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31
drivers/net/ethernet/ti/davinci_mdio.c
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@ -406,8 +406,8 @@ static int davinci_mdio_remove(struct platform_device *pdev)
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int davinci_mdio_suspend(struct device *dev)
#ifdef CONFIG_PM
static int davinci_mdio_runtime_suspend(struct device *dev)
{
struct davinci_mdio_data *data = dev_get_drvdata(dev);
u32 ctrl;
@ -418,6 +418,28 @@ static int davinci_mdio_suspend(struct device *dev)
__raw_writel(ctrl, &data->regs->control);
wait_for_idle(data);
return 0;
}
static int davinci_mdio_runtime_resume(struct device *dev)
{
struct davinci_mdio_data *data = dev_get_drvdata(dev);
davinci_mdio_enable(data);
return 0;
}
#endif
#ifdef CONFIG_PM_SLEEP
static int davinci_mdio_suspend(struct device *dev)
{
struct davinci_mdio_data *data = dev_get_drvdata(dev);
int ret = 0;
ret = pm_runtime_force_suspend(dev);
if (ret < 0)
return ret;
/* Select sleep pin state */
pinctrl_pm_select_sleep_state(dev);
@ -431,14 +453,15 @@ static int davinci_mdio_resume(struct device *dev)
/* Select default pin state */
pinctrl_pm_select_default_state(dev);
/* restart the scan state machine */
davinci_mdio_enable(data);
pm_runtime_force_resume(dev);
return 0;
}
#endif
static const struct dev_pm_ops davinci_mdio_pm_ops = {
SET_RUNTIME_PM_OPS(davinci_mdio_runtime_suspend,
davinci_mdio_runtime_resume, NULL)
SET_LATE_SYSTEM_SLEEP_PM_OPS(davinci_mdio_suspend, davinci_mdio_resume)
};