diff options
| -rw-r--r-- | drivers/watchdog/of_xilinx_wdt.c | 38 |
1 files changed, 38 insertions, 0 deletions
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 struct platform_driver xwdt_driver = { .driver = { .name = WATCHDOG_NAME, .of_match_table = xwdt_of_match, + .pm = &xwdt_pm_ops, }, }; |