| Message ID | 1483456521-24416-12-git-send-email-b-liu@ti.com |
|---|---|
| State | Superseded |
| Headers | show |
On Tue, Jan 03, 2017 at 09:15:16AM -0600, Bin Liu wrote: > From: Alexandre Bailon <abailon@baylibre.com> > > Implement PM methods specifics for da8xx glue. > The only thing to do is to power off the phy. > As the registers are in retention during suspend, > there is no need to save them. > > Signed-off-by: Alexandre Bailon <abailon@baylibre.com> > Signed-off-by: Bin Liu <b-liu@ti.com> > --- > drivers/usb/musb/da8xx.c | 29 +++++++++++++++++++++++++++++ > 1 file changed, 29 insertions(+) This is not a regression fix :( -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Tue, Jan 03, 2017 at 04:37:58PM +0100, Greg KH wrote: > On Tue, Jan 03, 2017 at 09:15:16AM -0600, Bin Liu wrote: > > From: Alexandre Bailon <abailon@baylibre.com> > > > > Implement PM methods specifics for da8xx glue. > > The only thing to do is to power off the phy. > > As the registers are in retention during suspend, > > there is no need to save them. > > > > Signed-off-by: Alexandre Bailon <abailon@baylibre.com> > > Signed-off-by: Bin Liu <b-liu@ti.com> > > --- > > drivers/usb/musb/da8xx.c | 29 +++++++++++++++++++++++++++++ > > 1 file changed, 29 insertions(+) > > This is not a regression fix :( will drop this in v2. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c index 26766a523352..738417986398 100644 --- a/drivers/usb/musb/da8xx.c +++ b/drivers/usb/musb/da8xx.c @@ -577,6 +577,34 @@ static int da8xx_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_PM_SLEEP +static int da8xx_suspend(struct device *dev) +{ + int ret; + struct da8xx_glue *glue = dev_get_drvdata(dev); + + ret = phy_power_off(glue->phy); + if (ret) + return ret; + clk_disable_unprepare(glue->clk); + + return 0; +} + +static int da8xx_resume(struct device *dev) +{ + int ret; + struct da8xx_glue *glue = dev_get_drvdata(dev); + + ret = clk_prepare_enable(glue->clk); + if (ret) + return ret; + return phy_power_on(glue->phy); +} +#endif + +static SIMPLE_DEV_PM_OPS(da8xx_pm_ops, da8xx_suspend, da8xx_resume); + #ifdef CONFIG_OF static const struct of_device_id da8xx_id_table[] = { { @@ -592,6 +620,7 @@ static int da8xx_remove(struct platform_device *pdev) .remove = da8xx_remove, .driver = { .name = "musb-da8xx", + .pm = &da8xx_pm_ops, .of_match_table = of_match_ptr(da8xx_id_table), }, };