iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

watchdog: sp805_wdt: add pm callbacks to support standby/S2R/hibernation

Browse Source 
Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Viresh Kumar 2012-02-24 15:12:37 +05:30 committed by Wim Van Sebroeck
parent 474ef12100
commit 16ac4abe0d
1 changed files with 33 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
drivers/watchdog/sp805_wdt.c
View File

@ -25,6 +25,7 @@
#include <linux/miscdevice.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/pm.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/types.h>
@ -351,6 +352,37 @@ static int __devexit sp805_wdt_remove(struct amba_device *adev)
return 0;
}
#ifdef CONFIG_PM
static int sp805_wdt_suspend(struct device *dev)
{
if (test_bit(WDT_BUSY, &wdt->status)) {
wdt_disable();
clk_disable(wdt->clk);
}
return 0;
}
static int sp805_wdt_resume(struct device *dev)
{
int ret = 0;
if (test_bit(WDT_BUSY, &wdt->status)) {
ret = clk_enable(wdt->clk);
if (ret) {
dev_err(dev, "clock enable fail");
return ret;
}
wdt_enable();
}
return ret;
}
#endif /* CONFIG_PM */
static SIMPLE_DEV_PM_OPS(sp805_wdt_dev_pm_ops, sp805_wdt_suspend,
sp805_wdt_resume);
static struct amba_id sp805_wdt_ids[] = {
{
.id = 0x00141805,
@ -364,6 +396,7 @@ MODULE_DEVICE_TABLE(amba, sp805_wdt_ids);
static struct amba_driver sp805_wdt_driver = {
.drv = {
.name = MODULE_NAME,
.pm = &sp805_wdt_dev_pm_ops,
},
.id_table = sp805_wdt_ids,
.probe = sp805_wdt_probe,