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usb: chipidea: imx: add system power management support 

Add basic system power management support

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
hifive-unleashed-5.1
Peter Chen 2014-11-26 13:44:30 +08:00 committed by Greg Kroah-Hartman
parent 8076932ff2
commit 2558c1f53b
1 changed files with 36 additions and 0 deletions
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36
drivers/usb/chipidea/ci_hdrc_imx.c
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@ -208,6 +208,41 @@ static int ci_hdrc_imx_remove(struct platform_device *pdev)
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int imx_controller_suspend(struct device *dev)
{
struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
dev_dbg(dev, "at %s\n", __func__);
clk_disable_unprepare(data->clk);
return 0;
}
static int imx_controller_resume(struct device *dev)
{
struct ci_hdrc_imx_data *data = dev_get_drvdata(dev);
dev_dbg(dev, "at %s\n", __func__);
return clk_prepare_enable(data->clk);
}
static int ci_hdrc_imx_suspend(struct device *dev)
{
return imx_controller_suspend(dev);
}
static int ci_hdrc_imx_resume(struct device *dev)
{
return imx_controller_resume(dev);
}
#endif /* CONFIG_PM_SLEEP */
static const struct dev_pm_ops ci_hdrc_imx_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(ci_hdrc_imx_suspend, ci_hdrc_imx_resume)
};
static struct platform_driver ci_hdrc_imx_driver = {
.probe = ci_hdrc_imx_probe,
.remove = ci_hdrc_imx_remove,
@ -215,6 +250,7 @@ static struct platform_driver ci_hdrc_imx_driver = {
.name = "imx_usb",
.owner = THIS_MODULE,
.of_match_table = ci_hdrc_imx_dt_ids,
.pm = &ci_hdrc_imx_pm_ops,
},
};