diff options
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_bios.c | 58 |
1 files changed, 39 insertions, 19 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c index bbf49e98fe02..5248ca42e543 100644 --- a/drivers/gpu/drm/i915/display/intel_bios.c +++ b/drivers/gpu/drm/i915/display/intel_bios.c @@ -594,6 +594,44 @@ get_lfp_data_tail(const struct bdb_lvds_lfp_data *data, return NULL; } +static int vbt_get_panel_type(struct drm_i915_private *i915) +{ + const struct bdb_lvds_options *lvds_options; + + lvds_options = find_section(i915, BDB_LVDS_OPTIONS); + if (!lvds_options) + return -1; + + if (lvds_options->panel_type > 0xf) { + drm_dbg_kms(&i915->drm, "Invalid VBT panel type 0x%x\n", + lvds_options->panel_type); + return -1; + } + + return lvds_options->panel_type; +} + +static int get_panel_type(struct drm_i915_private *i915) +{ + int ret; + + ret = intel_opregion_get_panel_type(i915); + if (ret >= 0) { + drm_WARN_ON(&i915->drm, ret > 0xf); + drm_dbg_kms(&i915->drm, "Panel type: %d (OpRegion)\n", ret); + return ret; + } + + ret = vbt_get_panel_type(i915); + if (ret >= 0) { + drm_WARN_ON(&i915->drm, ret > 0xf); + drm_dbg_kms(&i915->drm, "Panel type: %d (VBT)\n", ret); + return ret; + } + + return 0; /* fallback */ +} + /* Parse general panel options */ static void parse_panel_options(struct drm_i915_private *i915) @@ -601,7 +639,6 @@ parse_panel_options(struct drm_i915_private *i915) const struct bdb_lvds_options *lvds_options; int panel_type; int drrs_mode; - int ret; lvds_options = find_section(i915, BDB_LVDS_OPTIONS); if (!lvds_options) @@ -609,24 +646,7 @@ parse_panel_options(struct drm_i915_private *i915) i915->vbt.lvds_dither = lvds_options->pixel_dither; - ret = intel_opregion_get_panel_type(i915); - if (ret >= 0) { - drm_WARN_ON(&i915->drm, ret > 0xf); - panel_type = ret; - drm_dbg_kms(&i915->drm, "Panel type: %d (OpRegion)\n", - panel_type); - } else { - if (lvds_options->panel_type > 0xf) { - drm_dbg_kms(&i915->drm, - "Invalid VBT panel type 0x%x, assuming 0\n", - lvds_options->panel_type); - panel_type = 0; - } else { - panel_type = lvds_options->panel_type; - drm_dbg_kms(&i915->drm, "Panel type: %d (VBT)\n", - panel_type); - } - } + panel_type = get_panel_type(i915); i915->vbt.panel_type = panel_type; |