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driver: input: touchscreen: Make sure that suspend/resume is called only once

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Signed-off-by: Weixin Zhou <zwx@rock-chips.com>
Change-Id: I198581c45baf31f62b9ffa6ba6d9ec15cf4c606d
This commit is contained in:
Weixin Zhou
2021-01-06 14:44:56 +08:00
committed by Tao Huang
parent e5c26944dd
commit 12c78422e2
1 changed files with 8 additions and 2 deletions
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drivers/input/touchscreen/tp_suspend.h
+8 -2
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@@ -19,6 +19,7 @@ struct tp_device{
int(*tp_suspend)(struct tp_device*);
int(*tp_resume)(struct tp_device*);
struct mutex ops_lock;
int status;
};
static inline int fb_notifier_callback(struct notifier_block *self,
@@ -38,14 +39,18 @@ static inline int fb_notifier_callback(struct notifier_block *self,
switch (action) {
case FB_EARLY_EVENT_BLANK:
blank_mode = *((int *)event->data);
if (blank_mode != FB_BLANK_UNBLANK)
if (blank_mode != FB_BLANK_UNBLANK && tp->status == FB_BLANK_UNBLANK) {
tp->status = blank_mode;
ret = tp->tp_suspend(tp);
}
break;
case FB_EVENT_BLANK:
blank_mode = *((int *)event->data);
if (blank_mode == FB_BLANK_UNBLANK)
if (blank_mode == FB_BLANK_UNBLANK && tp->status != FB_BLANK_UNBLANK) {
tp->status = blank_mode;
tp->tp_resume(tp);
}
break;
default:
@@ -68,6 +73,7 @@ static inline int tp_register_fb(struct tp_device *tp)
memset(&tp->fb_notif, 0, sizeof(tp->fb_notif));
tp->fb_notif.notifier_call = fb_notifier_callback;
mutex_init(&tp->ops_lock);
tp->status = FB_BLANK_UNBLANK;
return fb_register_client(&tp->fb_notif);
}