*
* This function is to create the modeline based on the GTF algorithm.
* Generalized Timing Formula is derived from:
+ *
* GTF Spreadsheet by Andy Morrish (1/5/97)
* available at http://www.vesa.org
*
* I also refer to the function of fb_get_mode in the file of
* drivers/video/fbmon.c
*
- * Standard GTF parameters:
+ * Standard GTF parameters::
+ *
* M = 600
* C = 40
* K = 128
}
EXPORT_SYMBOL_GPL(drm_display_mode_to_videomode);
+void drm_bus_flags_from_videomode(const struct videomode *vm, u32 *bus_flags)
+{
+ *bus_flags = 0;
+ if (vm->flags & DISPLAY_FLAGS_PIXDATA_POSEDGE)
+ *bus_flags |= DRM_BUS_FLAG_PIXDATA_POSEDGE;
+ if (vm->flags & DISPLAY_FLAGS_PIXDATA_NEGEDGE)
+ *bus_flags |= DRM_BUS_FLAG_PIXDATA_NEGEDGE;
+
+ if (vm->flags & DISPLAY_FLAGS_DE_LOW)
+ *bus_flags |= DRM_BUS_FLAG_DE_LOW;
+ if (vm->flags & DISPLAY_FLAGS_DE_HIGH)
+ *bus_flags |= DRM_BUS_FLAG_DE_HIGH;
+}
+EXPORT_SYMBOL_GPL(drm_bus_flags_from_videomode);
+
#ifdef CONFIG_OF
/**
* of_get_drm_display_mode - get a drm_display_mode from devicetree
* 0 on success, a negative errno code when no of videomode node was found.
*/
int of_get_drm_display_mode(struct device_node *np,
- struct drm_display_mode *dmode, int index)
+ struct drm_display_mode *dmode, u32 *bus_flags,
+ int index)
{
struct videomode vm;
int ret;
return ret;
drm_display_mode_from_videomode(&vm, dmode);
+ if (bus_flags)
+ drm_bus_flags_from_videomode(&vm, bus_flags);
pr_debug("%s: got %dx%d display mode from %s\n",
of_node_full_name(np), vm.hactive, vm.vactive, np->name);