drm/i915/vbt: Parse panel options separately from timing data

Newer VBT versions will add an alternate way to read panel DTD
information, so let's split parsing of the general panel information
from the timing data in preparation.

Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Jesse Barnes <jsbarnes@google.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191115165132.9472-2-matthew.d.roper@intel.com

drivers/gpu/drm/i915/display/intel_bios.c

@@ -208,17 +208,12 @@ get_lvds_fp_timing(const struct bdb_header *bdb,
 	return (const struct lvds_fp_timing *)((const u8 *)bdb + ofs);
 }
 
-/* Try to find integrated panel data */
+/* Parse general panel options */
 static void
-parse_lfp_panel_data(struct drm_i915_private *dev_priv,
-		     const struct bdb_header *bdb)
+parse_panel_options(struct drm_i915_private *dev_priv,
+		    const struct bdb_header *bdb)
 {
 	const struct bdb_lvds_options *lvds_options;
-	const struct bdb_lvds_lfp_data *lvds_lfp_data;
-	const struct bdb_lvds_lfp_data_ptrs *lvds_lfp_data_ptrs;
-	const struct lvds_dvo_timing *panel_dvo_timing;
-	const struct lvds_fp_timing *fp_timing;
-	struct drm_display_mode *panel_fixed_mode;
 	int panel_type;
 	int drrs_mode;
 	int ret;
@@ -267,6 +262,19 @@ parse_lfp_panel_data(struct drm_i915_private *dev_priv,
 		DRM_DEBUG_KMS("DRRS not supported (VBT input)\n");
 		break;
 	}
+}
+
+/* Try to find integrated panel timing data */
+static void
+parse_lfp_panel_dtd(struct drm_i915_private *dev_priv,
+		    const struct bdb_header *bdb)
+{
+	const struct bdb_lvds_lfp_data *lvds_lfp_data;
+	const struct bdb_lvds_lfp_data_ptrs *lvds_lfp_data_ptrs;
+	const struct lvds_dvo_timing *panel_dvo_timing;
+	const struct lvds_fp_timing *fp_timing;
+	struct drm_display_mode *panel_fixed_mode;
+	int panel_type = dev_priv->vbt.panel_type;
 
 	lvds_lfp_data = find_section(bdb, BDB_LVDS_LFP_DATA);
 	if (!lvds_lfp_data)
@@ -1868,7 +1876,8 @@ void intel_bios_init(struct drm_i915_private *dev_priv)
 	/* Grab useful general definitions */
 	parse_general_features(dev_priv, bdb);
 	parse_general_definitions(dev_priv, bdb);
-	parse_lfp_panel_data(dev_priv, bdb);
+	parse_panel_options(dev_priv, bdb);
+	parse_lfp_panel_dtd(dev_priv, bdb);
 	parse_lfp_backlight(dev_priv, bdb);
 	parse_sdvo_panel_data(dev_priv, bdb);
 	parse_driver_features(dev_priv, bdb);