From b61c5ed57195ec97006d8d3ede1f583f6618b79e Mon Sep 17 00:00:00 2001 From: James Hogan Date: Mon, 15 Oct 2012 10:25:58 +0100 Subject: [PATCH] tty: serial: 8250_dw: Implement suspend/resume Implement suspend and resume callbacks for DesignWare 8250 driver. They're simple wrappers around serial8250_{suspend,resume}_port. Signed-off-by: James Hogan Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250_dw.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c index c3b2ec0..b19b8c5 100644 --- a/drivers/tty/serial/8250/8250_dw.c +++ b/drivers/tty/serial/8250/8250_dw.c @@ -161,6 +161,29 @@ static int __devexit dw8250_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_PM +static int dw8250_suspend(struct platform_device *pdev, pm_message_t state) +{ + struct dw8250_data *data = platform_get_drvdata(pdev); + + serial8250_suspend_port(data->line); + + return 0; +} + +static int dw8250_resume(struct platform_device *pdev) +{ + struct dw8250_data *data = platform_get_drvdata(pdev); + + serial8250_resume_port(data->line); + + return 0; +} +#else +#define dw8250_suspend NULL +#define dw8250_resume NULL +#endif /* CONFIG_PM */ + static const struct of_device_id dw8250_match[] = { { .compatible = "snps,dw-apb-uart" }, { /* Sentinel */ } @@ -175,6 +198,8 @@ static struct platform_driver dw8250_platform_driver = { }, .probe = dw8250_probe, .remove = __devexit_p(dw8250_remove), + .suspend = dw8250_suspend, + .resume = dw8250_resume, }; module_platform_driver(dw8250_platform_driver); -- 2.7.4