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tty: serial: 8250_dw: Implement suspend/resume

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Implement suspend and resume callbacks for DesignWare 8250 driver.
They're simple wrappers around serial8250_{suspend,resume}_port.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
James Hogan 2012-10-15 10:25:58 +01:00 committed by Greg Kroah-Hartman
parent 59c2e855e4
commit b61c5ed571
1 changed files with 25 additions and 0 deletions
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25
drivers/tty/serial/8250/8250_dw.c
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@ -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);