| Message ID | 1e1307808bd32591ea4f03ec3d70d0eadb38b91e.1502105061.git.michal.simek@xilinx.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Mon, Aug 07, 2017 at 01:24:23PM +0200, Michal Simek wrote: > Add suspend/resume support to driver. > > Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> > --- > > 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, > }, > }; >
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, }, };
Add suspend/resume support to driver. Signed-off-by: Michal Simek <michal.simek@xilinx.com> --- drivers/watchdog/of_xilinx_wdt.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+)