linux-kernel - [PATCH AUTOSEL 5.16 005/109] drm/edid: improve non-desktop quirk logging

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Date:   Fri,  1 Apr 2022 10:31:12 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Jani Nikula <jani.nikula@...el.com>,
        Philipp Zabel <philipp.zabel@...il.com>,
        Sasha Levin <sashal@...nel.org>,
        maarten.lankhorst@...ux.intel.com, mripard@...nel.org,
        tzimmermann@...e.de, airlied@...ux.ie, daniel@...ll.ch,
        dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 5.16 005/109] drm/edid: improve non-desktop quirk logging

From: Jani Nikula <jani.nikula@...el.com>

[ Upstream commit ce99534e978d4a36787dbe5e5c57749d12e6bf4a ]

Improve non-desktop quirk logging if the EDID indicates non-desktop. If
both are set, note about redundant quirk. If there's no quirk but the
EDID indicates non-desktop, don't log non-desktop is set to 0.

Cc: Philipp Zabel <philipp.zabel@...il.com>
Signed-off-by: Jani Nikula <jani.nikula@...el.com>
Reviewed-by: Philipp Zabel <philipp.zabel@...il.com>
Tested-by: Philipp Zabel <philipp.zabel@...il.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211228101051.317989-1-jani.nikula@intel.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/drm_edid.c | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index e8adfa90807c..e42a15e3f2ab 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -5331,17 +5331,13 @@ u32 drm_add_display_info(struct drm_connector *connector, const struct edid *edi
 	info->width_mm = edid->width_cm * 10;
 	info->height_mm = edid->height_cm * 10;
 
-	info->non_desktop = !!(quirks & EDID_QUIRK_NON_DESKTOP);
-
 	drm_get_monitor_range(connector, edid);
 
-	DRM_DEBUG_KMS("non_desktop set to %d\n", info->non_desktop);
-
 	if (edid->revision < 3)
-		return quirks;
+		goto out;
 
 	if (!(edid->input & DRM_EDID_INPUT_DIGITAL))
-		return quirks;
+		goto out;
 
 	info->color_formats |= DRM_COLOR_FORMAT_RGB444;
 	drm_parse_cea_ext(connector, edid);
@@ -5362,7 +5358,7 @@ u32 drm_add_display_info(struct drm_connector *connector, const struct edid *edi
 
 	/* Only defined for 1.4 with digital displays */
 	if (edid->revision < 4)
-		return quirks;
+		goto out;
 
 	switch (edid->input & DRM_EDID_DIGITAL_DEPTH_MASK) {
 	case DRM_EDID_DIGITAL_DEPTH_6:
@@ -5399,6 +5395,13 @@ u32 drm_add_display_info(struct drm_connector *connector, const struct edid *edi
 
 	drm_update_mso(connector, edid);
 
+out:
+	if (quirks & EDID_QUIRK_NON_DESKTOP) {
+		drm_dbg_kms(connector->dev, "Non-desktop display%s\n",
+			    info->non_desktop ? " (redundant quirk)" : "");
+		info->non_desktop = true;
+	}
+
 	return quirks;
 }
 
-- 
2.34.1