drm/i915/bios: Dump PNPID and panel name

Dump the panel PNPID and name from the VBT.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220510104242.6099-16-ville.syrjala@linux.intel.com

diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c
index a18eedc..5765643 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -604,6 +604,19 @@ get_lfp_data_tail(const struct bdb_lvds_lfp_data *data,
                return NULL;
 }
 
+static void dump_pnp_id(struct drm_i915_private *i915,
+                       const struct lvds_pnp_id *pnp_id,
+                       const char *name)
+{
+       u16 mfg_name = be16_to_cpu((__force __be16)pnp_id->mfg_name);
+       char vend[4];
+
+       drm_dbg_kms(&i915->drm, "%s PNPID mfg: %s (0x%x), prod: %u, serial: %u, week: %d, year: %d\n",
+                   name, drm_edid_decode_mfg_id(mfg_name, vend),
+                   pnp_id->mfg_name, pnp_id->product_code, pnp_id->serial,
+                   pnp_id->mfg_week, pnp_id->mfg_year + 1990);
+}
+
 static int opregion_get_panel_type(struct drm_i915_private *i915,
                                   const struct intel_bios_encoder_data *devdata,
                                   const struct edid *edid)
@@ -655,6 +668,8 @@ static int pnpid_get_panel_type(struct drm_i915_private *i915,
        edid_id_nodate.mfg_week = 0;
        edid_id_nodate.mfg_year = 0;
 
+       dump_pnp_id(i915, edid_id, "EDID");
+
        ptrs = find_section(i915, BDB_LVDS_LFP_DATA_PTRS);
        if (!ptrs)
                return -1;
@@ -861,6 +876,7 @@ parse_lfp_data(struct drm_i915_private *i915,
        const struct bdb_lvds_lfp_data *data;
        const struct bdb_lvds_lfp_data_tail *tail;
        const struct bdb_lvds_lfp_data_ptrs *ptrs;
+       const struct lvds_pnp_id *pnp_id;
        int panel_type = panel->vbt.panel_type;
 
        ptrs = find_section(i915, BDB_LVDS_LFP_DATA_PTRS);
@@ -874,10 +890,17 @@ parse_lfp_data(struct drm_i915_private *i915,
        if (!panel->vbt.lfp_lvds_vbt_mode)
                parse_lfp_panel_dtd(i915, panel, data, ptrs);
 
+       pnp_id = get_lvds_pnp_id(data, ptrs, panel_type);
+       dump_pnp_id(i915, pnp_id, "Panel");
+
        tail = get_lfp_data_tail(data, ptrs);
        if (!tail)
                return;
 
+       drm_dbg_kms(&i915->drm, "Panel name: %.*s\n",
+                   (int)sizeof(tail->panel_name[0].name),
+                   tail->panel_name[panel_type].name);
+
        if (i915->display.vbt.version >= 188) {
                panel->vbt.seamless_drrs_min_refresh_rate =
                        tail->seamless_drrs_min_refresh_rate[panel_type];