backlight/fbcon: Add FB_EVENT_CONBLANK
The backlight class wants notification whenever the console is blanked but doesn't get this when hardware blanking fails and software blanking is used. Changing FB_EVENT_BLANK to report both would be a behaviour change which could confuse the console layer so add a new event for software blanking and have the backlight class listen for both. Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
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@ -28,7 +28,7 @@ static int fb_notifier_callback(struct notifier_block *self,
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struct fb_event *evdata = data;
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/* If we aren't interested in this event, skip it immediately ... */
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if (event != FB_EVENT_BLANK)
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if (event != FB_EVENT_BLANK && event != FB_EVENT_CONBLANK)
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return 0;
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bd = container_of(self, struct backlight_device, fb_notif);
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@ -2233,6 +2233,8 @@ static int fbcon_switch(struct vc_data *vc)
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static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info,
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int blank)
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{
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struct fb_event event;
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if (blank) {
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unsigned short charmask = vc->vc_hi_font_mask ?
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0x1ff : 0xff;
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@ -2243,6 +2245,11 @@ static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info,
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fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols);
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vc->vc_video_erase_char = oldc;
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}
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event.info = info;
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event.data = ␣
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fb_notifier_call_chain(FB_EVENT_CONBLANK, &event);
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}
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static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch)
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@ -516,13 +516,15 @@ struct fb_cursor_user {
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#define FB_EVENT_GET_CONSOLE_MAP 0x07
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/* CONSOLE-SPECIFIC: set console to framebuffer mapping */
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#define FB_EVENT_SET_CONSOLE_MAP 0x08
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/* A display blank is requested */
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/* A hardware display blank change occured */
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#define FB_EVENT_BLANK 0x09
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/* Private modelist is to be replaced */
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#define FB_EVENT_NEW_MODELIST 0x0A
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/* The resolution of the passed in fb_info about to change and
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all vc's should be changed */
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#define FB_EVENT_MODE_CHANGE_ALL 0x0B
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/* A software display blank change occured */
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#define FB_EVENT_CONBLANK 0x0C
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struct fb_event {
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struct fb_info *info;
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