watchdog: sp805_wdt: add pm callbacks to support standby/S2R/hibernation
Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Родитель
474ef12100
Коммит
16ac4abe0d
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@ -25,6 +25,7 @@
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#include <linux/miscdevice.h>
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#include <linux/miscdevice.h>
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#include <linux/module.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/moduleparam.h>
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#include <linux/pm.h>
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#include <linux/slab.h>
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <linux/spinlock.h>
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#include <linux/types.h>
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#include <linux/types.h>
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@ -351,6 +352,37 @@ static int __devexit sp805_wdt_remove(struct amba_device *adev)
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return 0;
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return 0;
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}
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}
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#ifdef CONFIG_PM
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static int sp805_wdt_suspend(struct device *dev)
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{
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if (test_bit(WDT_BUSY, &wdt->status)) {
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wdt_disable();
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clk_disable(wdt->clk);
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}
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return 0;
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}
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static int sp805_wdt_resume(struct device *dev)
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{
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int ret = 0;
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if (test_bit(WDT_BUSY, &wdt->status)) {
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ret = clk_enable(wdt->clk);
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if (ret) {
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dev_err(dev, "clock enable fail");
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return ret;
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}
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wdt_enable();
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}
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return ret;
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}
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#endif /* CONFIG_PM */
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static SIMPLE_DEV_PM_OPS(sp805_wdt_dev_pm_ops, sp805_wdt_suspend,
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sp805_wdt_resume);
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static struct amba_id sp805_wdt_ids[] = {
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static struct amba_id sp805_wdt_ids[] = {
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{
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{
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.id = 0x00141805,
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.id = 0x00141805,
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@ -364,6 +396,7 @@ MODULE_DEVICE_TABLE(amba, sp805_wdt_ids);
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static struct amba_driver sp805_wdt_driver = {
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static struct amba_driver sp805_wdt_driver = {
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.drv = {
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.drv = {
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.name = MODULE_NAME,
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.name = MODULE_NAME,
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.pm = &sp805_wdt_dev_pm_ops,
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},
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},
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.id_table = sp805_wdt_ids,
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.id_table = sp805_wdt_ids,
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.probe = sp805_wdt_probe,
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.probe = sp805_wdt_probe,
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