Commit 994efacd authored by Richard Purdie's avatar Richard Purdie

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: default avatarRichard Purdie <rpurdie@rpsys.net>
parent 34f18a71
......@@ -28,7 +28,7 @@ static int fb_notifier_callback(struct notifier_block *self,
struct fb_event *evdata = data;
/* If we aren't interested in this event, skip it immediately ... */
if (event != FB_EVENT_BLANK)
if (event != FB_EVENT_BLANK && event != FB_EVENT_CONBLANK)
return 0;
bd = container_of(self, struct backlight_device, fb_notif);
......
......@@ -2233,6 +2233,8 @@ static int fbcon_switch(struct vc_data *vc)
static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info,
int blank)
{
struct fb_event event;
if (blank) {
unsigned short charmask = vc->vc_hi_font_mask ?
0x1ff : 0xff;
......@@ -2243,6 +2245,11 @@ static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info,
fbcon_clear(vc, 0, 0, vc->vc_rows, vc->vc_cols);
vc->vc_video_erase_char = oldc;
}
event.info = info;
event.data = &blank;
fb_notifier_call_chain(FB_EVENT_CONBLANK, &event);
}
static int fbcon_blank(struct vc_data *vc, int blank, int mode_switch)
......
......@@ -516,13 +516,15 @@ struct fb_cursor_user {
#define FB_EVENT_GET_CONSOLE_MAP 0x07
/* CONSOLE-SPECIFIC: set console to framebuffer mapping */
#define FB_EVENT_SET_CONSOLE_MAP 0x08
/* A display blank is requested */
/* A hardware display blank change occured */
#define FB_EVENT_BLANK 0x09
/* Private modelist is to be replaced */
#define FB_EVENT_NEW_MODELIST 0x0A
/* The resolution of the passed in fb_info about to change and
all vc's should be changed */
#define FB_EVENT_MODE_CHANGE_ALL 0x0B
/* A software display blank change occured */
#define FB_EVENT_CONBLANK 0x0C
struct fb_event {
struct fb_info *info;
......
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