diff options
Diffstat (limited to 'drivers/serial/mxs-duart.c')
| -rw-r--r-- | drivers/serial/mxs-duart.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/serial/mxs-duart.c b/drivers/serial/mxs-duart.c index 5d006f380930..171b8628faee 100644 --- a/drivers/serial/mxs-duart.c +++ b/drivers/serial/mxs-duart.c @@ -735,9 +735,40 @@ static int __devexit duart_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_PM +static int duart_suspend(struct platform_device *pdev, + pm_message_t state) +{ + int ret = 0; + if (!duart_port.suspended) { + ret = uart_suspend_port(&duart_drv, &duart_port.port); + if (!ret) + duart_port.suspended = 1; + } + return ret; +} + +static int duart_resume(struct platform_device *pdev, + pm_message_t state) +{ + int ret = 0; + if (duart_port.suspended) { + ret = uart_resume_port(&duart_drv, &duart_port.port); + if (!ret) + duart_port.suspended = 0; + } + return ret; +} +#else +#define duart_suspend NULL +#define duart_resume NULL +#endif + static struct platform_driver duart_driver = { .probe = duart_probe, .remove = __devexit_p(duart_remove), + .suspend = duart_suspend, + .resume = duart_resume, .driver = { .name = "mxs-duart", .owner = THIS_MODULE, |