On Mon, Aug 07, 2017 at 01:24:23PM +0200, Michal Simek wrote: > Add suspend/resume support to driver. > > Signed-off-by: Michal Simek <[email protected]>
Reviewed-by: Guenter Roeck <[email protected]> > --- > > drivers/watchdog/of_xilinx_wdt.c | 38 ++++++++++++++++++++++++++++++++++++++ > 1 file changed, 38 insertions(+) > > diff --git a/drivers/watchdog/of_xilinx_wdt.c > b/drivers/watchdog/of_xilinx_wdt.c > index 41edeb93a327..1cf286945b7a 100644 > --- a/drivers/watchdog/of_xilinx_wdt.c > +++ b/drivers/watchdog/of_xilinx_wdt.c > @@ -264,6 +264,43 @@ static int xwdt_remove(struct platform_device *pdev) > return 0; > } > > +/** > + * xwdt_suspend - Suspend the device. > + * > + * @dev: handle to the device structure. > + * Return: 0 always. > + */ > +static int __maybe_unused xwdt_suspend(struct device *dev) > +{ > + struct platform_device *pdev = to_platform_device(dev); > + struct xwdt_device *xdev = platform_get_drvdata(pdev); > + > + if (watchdog_active(&xdev->xilinx_wdt_wdd)) > + xilinx_wdt_stop(&xdev->xilinx_wdt_wdd); > + > + return 0; > +} > + > +/** > + * xwdt_resume - Resume the device. > + * > + * @dev: handle to the device structure. > + * Return: 0 on success, errno otherwise. > + */ > +static int __maybe_unused xwdt_resume(struct device *dev) > +{ > + struct platform_device *pdev = to_platform_device(dev); > + struct xwdt_device *xdev = platform_get_drvdata(pdev); > + int ret = 0; > + > + if (watchdog_active(&xdev->xilinx_wdt_wdd)) > + ret = xilinx_wdt_start(&xdev->xilinx_wdt_wdd); > + > + return ret; > +} > + > +static SIMPLE_DEV_PM_OPS(xwdt_pm_ops, xwdt_suspend, xwdt_resume); > + > /* Match table for of_platform binding */ > static const struct of_device_id xwdt_of_match[] = { > { .compatible = "xlnx,xps-timebase-wdt-1.00.a", }, > @@ -278,6 +315,7 @@ static int xwdt_remove(struct platform_device *pdev) > .driver = { > .name = WATCHDOG_NAME, > .of_match_table = xwdt_of_match, > + .pm = &xwdt_pm_ops, > }, > }; >
