fbcon: Console Rotation - Add ability to control rotation via sysfs

index e829ba1..e7802ff 100644
@@ -193,6 +193,8 @@ static void fbcon_preset_disp(struct fb_
 			      int unit);
 static void fbcon_redraw_move(struct vc_data *vc, struct display *p,
 			      int line, int count, int dy);
+static void fbcon_modechanged(struct fb_info *info);
+static void fbcon_set_all_vcs(struct fb_info *info);
 
 #ifdef CONFIG_MAC
 /*

@@ -218,6 +220,51 @@ static inline void fbcon_set_rotation(st
 	else
 		ops->rotate = 0;
 }
+
+static void fbcon_rotate(struct fb_info *info, u32 rotate)
+{
+	struct fbcon_ops *ops= info->fbcon_par;
+	struct fb_info *fb_info;
+
+	if (!ops || ops->currcon == -1)
+		return;
+
+	fb_info = registered_fb[con2fb_map[ops->currcon]];
+
+	if (info == fb_info) {
+		struct display *p = &fb_display[ops->currcon];
+
+		if (rotate < 4)
+			p->con_rotate = rotate;
+		else
+			p->con_rotate = 0;
+
+		fbcon_modechanged(info);
+	}
+}
+
+static void fbcon_rotate_all(struct fb_info *info, u32 rotate)
+{
+	struct fbcon_ops *ops = info->fbcon_par;
+	struct vc_data *vc;
+	struct display *p;
+	int i;
+
+	if (!ops || ops->currcon < 0 || rotate > 3)
+		return;
+
+	for (i = 0; i < MAX_NR_CONSOLES; i++) {
+		vc = vc_cons[i].d;
+		if (!vc || vc->vc_mode != KD_TEXT ||
+		    registered_fb[con2fb_map[i]] != info)
+			continue;
+
+		p = &fb_display[vc->vc_num];
+		p->con_rotate = rotate;
+	}
+
+	fbcon_set_all_vcs(info);
+}
 #else
 static inline void fbcon_set_rotation(struct fb_info *info, struct display *p)
 {

@@ -225,8 +272,25 @@ static inline void fbcon_set_rotation(st
 
 	ops->rotate = FB_ROTATE_UR;
 }
+
+static void fbcon_rotate(struct fb_info *info, u32 rotate)
+{
+	return;
+}
+
+static void fbcon_rotate_all(struct fb_info *info, u32 rotate)
+{
+	return;
+}
 #endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */
 
+static int fbcon_get_rotate(struct fb_info *info)
+{
+	struct fbcon_ops *ops = info->fbcon_par;
+
+	return (ops) ? ops->rotate : 0;
+}
+
 static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info)
 {
 	struct fbcon_ops *ops = info->fbcon_par;

@@ -2864,6 +2928,14 @@ static int fbcon_event_notify(struct not
 	case FB_EVENT_NEW_MODELIST:
 		fbcon_new_modelist(info);
 		break;
+	case FB_EVENT_SET_CON_ROTATE:
+		fbcon_rotate(info, *(int *)event->data);
+		break;
+	case FB_EVENT_GET_CON_ROTATE:
+		ret = fbcon_get_rotate(info);
+		break;
+	case FB_EVENT_SET_CON_ROTATE_ALL:
+		fbcon_rotate_all(info, *(int *)event->data);
 	}
 
 	return ret;

index 7a2a8fa..81b6cd2 100644
@@ -1319,6 +1319,28 @@ int fb_new_modelist(struct fb_info *info
 	return err;
 }
 
+/**
+ * fb_con_duit - user<->fbcon passthrough
+ * @info: struct fb_info
+ * @event: notification event to be passed to fbcon
+ * @data: private data
+ *
+ * DESCRIPTION
+ * This function is an fbcon-user event passing channel
+ * which bypasses fbdev.  This is hopefully temporary
+ * until a user interface for fbcon is created
+ */
+int fb_con_duit(struct fb_info *info, int event, void *data)
+{
+	struct fb_event evnt;
+
+	evnt.info = info;
+	evnt.data = data;
+
+	return notifier_call_chain(&fb_notifier_list, event, &evnt);
+}
+EXPORT_SYMBOL(fb_con_duit);
+
 static char *video_options[FB_MAX];
 static int ofonly;
 

79 lines not on this page · raw message

index 357dd3a..04a58f3 100644
@@ -508,6 +508,12 @@ struct fb_cursor_user {
 /*	The resolution of the passed in fb_info about to change and
         all vc's should be changed         */
 #define FB_EVENT_MODE_CHANGE_ALL	0x0A
+/*      CONSOLE-SPECIFIC: set console rotation */
+#define FB_EVENT_SET_CON_ROTATE         0x0B
+/*      CONSOLE-SPECIFIC: get console rotation */
+#define FB_EVENT_GET_CON_ROTATE         0x0C
+/*      CONSOLE-SPECIFIC: rotate all consoles */
+#define FB_EVENT_SET_CON_ROTATE_ALL     0x0D
 
 struct fb_event {
 	struct fb_info *info;

@@ -836,6 +842,7 @@ extern int fb_get_color_depth(struct fb_
 			      struct fb_fix_screeninfo *fix);
 extern int fb_get_options(char *name, char **option);
 extern int fb_new_modelist(struct fb_info *info);
+extern int fb_con_duit(struct fb_info *info, int event, void *data);
 
 extern struct fb_info *registered_fb[FB_MAX];
 extern int num_registered_fb;