-/**
- * intel_find_lvds_downclock - find the reduced downclock for LVDS in EDID
- * @dev: drm device
- * @connector: LVDS connector
- *
- * Find the reduced downclock for LVDS in EDID.
- */
-static void intel_find_lvds_downclock(struct drm_device *dev,
- struct drm_display_mode *fixed_mode,
- struct drm_connector *connector)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct drm_display_mode *scan;
- int temp_downclock;
-
- temp_downclock = fixed_mode->clock;
- list_for_each_entry(scan, &connector->probed_modes, head) {
- /*
- * If one mode has the same resolution with the fixed_panel
- * mode while they have the different refresh rate, it means
- * that the reduced downclock is found for the LVDS. In such
- * case we can set the different FPx0/1 to dynamically select
- * between low and high frequency.
- */
- if (scan->hdisplay == fixed_mode->hdisplay &&
- scan->hsync_start == fixed_mode->hsync_start &&
- scan->hsync_end == fixed_mode->hsync_end &&
- scan->htotal == fixed_mode->htotal &&
- scan->vdisplay == fixed_mode->vdisplay &&
- scan->vsync_start == fixed_mode->vsync_start &&
- scan->vsync_end == fixed_mode->vsync_end &&
- scan->vtotal == fixed_mode->vtotal) {
- if (scan->clock < temp_downclock) {
- /*
- * The downclock is already found. But we
- * expect to find the lower downclock.
- */
- temp_downclock = scan->clock;
- }
- }
- }
- if (temp_downclock < fixed_mode->clock && i915_lvds_downclock) {
- /* We found the downclock for LVDS. */
- dev_priv->lvds_downclock_avail = 1;
- dev_priv->lvds_downclock = temp_downclock;
- DRM_DEBUG_KMS("LVDS downclock is found in EDID. "
- "Normal clock %dKhz, downclock %dKhz\n",
- fixed_mode->clock, temp_downclock);
- }
-}
-