videomode: videomode_from_timing work

We currently have videomode_from_timing(), which takes one
display_timing entry from display_timings.

To make it easier to use display_timing without display_timings, this
patch renames videomode_from_timing() to videomode_from_timings(), and
adds a new videomode_from_timing() which just converts a given
display_timing to videomode.

Signed-off-by: Tomi Valkeinen <[e-mail]>
Cc: Steffen Trumtrar <[e-mail]>

drivers/gpu/drm/tilcdc/tilcdc_panel.c

···
 		struct drm_display_mode *mode = drm_mode_create(dev);
 		struct videomode vm;
 
-		if (videomode_from_timing(timings, &vm, i))
+		if (videomode_from_timings(timings, &vm, i))
 			break;
 
 		drm_display_mode_from_videomode(&vm, mode);

drivers/video/of_videomode.c

···
 	if (index == OF_USE_NATIVE_MODE)
 		index = disp->native_mode;
 
-	ret = videomode_from_timing(disp, vm, index);
+	ret = videomode_from_timings(disp, vm, index);
 	if (ret)
 		return ret;
 

drivers/video/videomode.c

···
 #include <video/display_timing.h>
 #include <video/videomode.h>
 
-int videomode_from_timing(const struct display_timings *disp,
-			  struct videomode *vm, unsigned int index)
+void videomode_from_timing(const struct display_timing *dt,
+			  struct videomode *vm)
 {
-	struct display_timing *dt;
-
-	dt = display_timings_get(disp, index);
-	if (!dt)
-		return -EINVAL;
-
 	vm->pixelclock = dt->pixelclock.typ;
 	vm->hactive = dt->hactive.typ;
 	vm->hfront_porch = dt->hfront_porch.typ;
···
 	vm->vsync_len = dt->vsync_len.typ;
 
 	vm->flags = dt->flags;
+}
+EXPORT_SYMBOL_GPL(videomode_from_timing);
+
+int videomode_from_timings(const struct display_timings *disp,
+			  struct videomode *vm, unsigned int index)
+{
+	struct display_timing *dt;
+
+	dt = display_timings_get(disp, index);
+	if (!dt)
+		return -EINVAL;
+
+	videomode_from_timing(dt, vm);
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(videomode_from_timing);
+EXPORT_SYMBOL_GPL(videomode_from_timings);

include/video/videomode.h

···
 
 /**
  * videomode_from_timing - convert display timing to videomode
+ * @dt: display_timing structure
+ * @vm: return value
+ *
+ * DESCRIPTION:
+ * This function converts a struct display_timing to a struct videomode.
+ */
+void videomode_from_timing(const struct display_timing *dt,
+			  struct videomode *vm);
+
+/**
+ * videomode_from_timings - convert one display timings entry to videomode
  * @disp: structure with all possible timing entries
  * @vm: return value
  * @index: index into the list of display timings in devicetree
  *
  * DESCRIPTION:
- * This function converts a struct display_timing to a struct videomode.
+ * This function converts one struct display_timing entry to a struct videomode.
  */
-int videomode_from_timing(const struct display_timings *disp,
+int videomode_from_timings(const struct display_timings *disp,
 			  struct videomode *vm, unsigned int index);
 
 #endif