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ARM: 5626/1: add suspend/resume functions to amba-pl011 serial driver

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Add suspend/resume functions to the AMBA pl011 serial driver.

Signed-off-by: Leo Chen <leochen@broadcom.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Leo Chen
2009-07-28 23:43:33 +01:00
committed by Russell King
parent 8afe0b96b3
commit b736b89f8a
1 changed files with 26 additions and 0 deletions
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26
drivers/serial/amba-pl011.c
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@@ -826,6 +826,28 @@ static int pl011_remove(struct amba_device *dev)
return 0; return 0;
} }
#ifdef CONFIG_PM
static int pl011_suspend(struct amba_device *dev, pm_message_t state)
{
struct uart_amba_port *uap = amba_get_drvdata(dev);
if (!uap)
return -EINVAL;
return uart_suspend_port(&amba_reg, &uap->port);
}
static int pl011_resume(struct amba_device *dev)
{
struct uart_amba_port *uap = amba_get_drvdata(dev);
if (!uap)
return -EINVAL;
return uart_resume_port(&amba_reg, &uap->port);
}
#endif
static struct amba_id pl011_ids[] __initdata = { static struct amba_id pl011_ids[] __initdata = {
{ {
.id = 0x00041011, .id = 0x00041011,
@@ -847,6 +869,10 @@ static struct amba_driver pl011_driver = {
.id_table = pl011_ids, .id_table = pl011_ids,
.probe = pl011_probe, .probe = pl011_probe,
.remove = pl011_remove, .remove = pl011_remove,
#ifdef CONFIG_PM
.suspend = pl011_suspend,
.resume = pl011_resume,
#endif
}; };
static int __init pl011_init(void) static int __init pl011_init(void)