mirror of
https://github.com/torvalds/linux.git
synced 2024-10-31 17:21:49 +00:00
serial: of-serial: add PM suspend/resume support
This adds PM suspend/resume support for the of-serial driver to provide power management support on devices attatched to it. Signed-off-by: Jingchang Lu <jingchang.lu@freescale.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
2c8faf3d65
commit
2dea53bf57
@ -240,6 +240,32 @@ static int of_platform_serial_remove(struct platform_device *ofdev)
|
|||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
#ifdef CONFIG_PM_SLEEP
|
||||||
|
static int of_serial_suspend(struct device *dev)
|
||||||
|
{
|
||||||
|
struct of_serial_info *info = dev_get_drvdata(dev);
|
||||||
|
|
||||||
|
serial8250_suspend_port(info->line);
|
||||||
|
if (info->clk)
|
||||||
|
clk_disable_unprepare(info->clk);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int of_serial_resume(struct device *dev)
|
||||||
|
{
|
||||||
|
struct of_serial_info *info = dev_get_drvdata(dev);
|
||||||
|
|
||||||
|
if (info->clk)
|
||||||
|
clk_prepare_enable(info->clk);
|
||||||
|
|
||||||
|
serial8250_resume_port(info->line);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
static SIMPLE_DEV_PM_OPS(of_serial_pm_ops, of_serial_suspend, of_serial_resume);
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* A few common types, add more as needed.
|
* A few common types, add more as needed.
|
||||||
*/
|
*/
|
||||||
@ -271,6 +297,7 @@ static struct platform_driver of_platform_serial_driver = {
|
|||||||
.name = "of_serial",
|
.name = "of_serial",
|
||||||
.owner = THIS_MODULE,
|
.owner = THIS_MODULE,
|
||||||
.of_match_table = of_platform_serial_table,
|
.of_match_table = of_platform_serial_table,
|
||||||
|
.pm = &of_serial_pm_ops,
|
||||||
},
|
},
|
||||||
.probe = of_platform_serial_probe,
|
.probe = of_platform_serial_probe,
|
||||||
.remove = of_platform_serial_remove,
|
.remove = of_platform_serial_remove,
|
||||||
|
Loading…
Reference in New Issue
Block a user