From 2558c1f53bbbb5848fd5910918b97b03249d3885 Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Wed, 26 Nov 2014 13:44:30 +0800 Subject: [PATCH] usb: chipidea: imx: add system power management support Add basic system power management support Signed-off-by: Peter Chen Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/ci_hdrc_imx.c | 36 ++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c index 8b1482aa1291..75421c2187f5 100644 --- a/drivers/usb/chipidea/ci_hdrc_imx.c +++ b/drivers/usb/chipidea/ci_hdrc_imx.c @@ -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, }, };