From bb6f53d4f5be085dd3cffdcb5e32719cdf63466b Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Thu, 21 Sep 2023 00:19:34 +0300 Subject: [PATCH] drm/i915/bios: Fixup h/vsync_end instead of h/vtotal MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit We have the same h/vsync_end vs. h/vtotal quirk in the VBT parser that was also present in EDID parser. Adjust the VBT parser the same way as was done for hte EDID parser to fixup h/vsync_end instead of h/vtotal. While I'm not currently aware of any machines that need this for the VBT it seems prudent to keep both parsers in sync. And while at it let's add some debugs here as well. A bit lackluster but didn't feel like plumbing the connector all the way down at this time. Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20230920211934.14920-2-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula --- drivers/gpu/drm/i915/display/intel_bios.c | 23 +++++++++++++++-------- 1 file changed, 15 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c index 099ef48d8172b..4e8f1e91bb089 100644 --- a/drivers/gpu/drm/i915/display/intel_bios.c +++ b/drivers/gpu/drm/i915/display/intel_bios.c @@ -521,7 +521,8 @@ static void init_bdb_blocks(struct drm_i915_private *i915, } static void -fill_detail_timing_data(struct drm_display_mode *panel_fixed_mode, +fill_detail_timing_data(struct drm_i915_private *i915, + struct drm_display_mode *panel_fixed_mode, const struct lvds_dvo_timing *dvo_timing) { panel_fixed_mode->hdisplay = (dvo_timing->hactive_hi << 8) | @@ -561,11 +562,17 @@ fill_detail_timing_data(struct drm_display_mode *panel_fixed_mode, panel_fixed_mode->height_mm = (dvo_timing->vimage_hi << 8) | dvo_timing->vimage_lo; - /* Some VBTs have bogus h/vtotal values */ - if (panel_fixed_mode->hsync_end > panel_fixed_mode->htotal) - panel_fixed_mode->htotal = panel_fixed_mode->hsync_end + 1; - if (panel_fixed_mode->vsync_end > panel_fixed_mode->vtotal) - panel_fixed_mode->vtotal = panel_fixed_mode->vsync_end + 1; + /* Some VBTs have bogus h/vsync_end values */ + if (panel_fixed_mode->hsync_end > panel_fixed_mode->htotal) { + drm_dbg_kms(&i915->drm, "reducing hsync_end %d->%d\n", + panel_fixed_mode->hsync_end, panel_fixed_mode->htotal); + panel_fixed_mode->hsync_end = panel_fixed_mode->htotal; + } + if (panel_fixed_mode->vsync_end > panel_fixed_mode->vtotal) { + drm_dbg_kms(&i915->drm, "reducing vsync_end %d->%d\n", + panel_fixed_mode->vsync_end, panel_fixed_mode->vtotal); + panel_fixed_mode->vsync_end = panel_fixed_mode->vtotal; + } drm_mode_set_name(panel_fixed_mode); } @@ -849,7 +856,7 @@ parse_lfp_panel_dtd(struct drm_i915_private *i915, if (!panel_fixed_mode) return; - fill_detail_timing_data(panel_fixed_mode, panel_dvo_timing); + fill_detail_timing_data(i915, panel_fixed_mode, panel_dvo_timing); panel->vbt.lfp_lvds_vbt_mode = panel_fixed_mode; @@ -1134,7 +1141,7 @@ parse_sdvo_panel_data(struct drm_i915_private *i915, if (!panel_fixed_mode) return; - fill_detail_timing_data(panel_fixed_mode, &dtds->dtds[index]); + fill_detail_timing_data(i915, panel_fixed_mode, &dtds->dtds[index]); panel->vbt.sdvo_lvds_vbt_mode = panel_fixed_mode; -- 2.30.2