diff options
| author | Peter Chen | 2014-11-26 13:44:30 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2014-11-26 09:28:12 -0800 |
| commit | 2558c1f53bbbb5848fd5910918b97b03249d3885 (patch) | |
| tree | 809e80cf032ee1bf8b33fbfcf592e9e2647a102e /drivers/usb | |
| parent | 8076932ff2fc0f6db0172420e6b148a8b2e8c805 (diff) | |
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>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/chipidea/ci_hdrc_imx.c | 36 |
1 files changed, 36 insertions, 0 deletions
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, }, }; |