watchdog: of_xilinx_wdt: Add suspend/resume support (6f671c6b) · Commits · 戴 / test

drivers/watchdog/of_xilinx_wdt.c

+38 −0

Original line number	Diff line number	Diff line
		@@ -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 struct platform_driver xwdt_driver = {
		.driver = {
		.name = WATCHDOG_NAME,
		.of_match_table = xwdt_of_match,
		.pm = &xwdt_pm_ops,
		},
		};