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[2003:eb:a70b:6e00:ca7f:54ff:fe01:9321]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-48541b6f6e6sm821489895e9.10.2026.03.15.15.34.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 15 Mar 2026 15:34:51 -0700 (PDT) From: =?UTF-8?q?Johannes=20W=C3=BCller?= To: amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Cc: =?UTF-8?q?Johannes=20W=C3=BCller?= , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , linux-kernel@vger.kernel.org (open list) Subject: [PATCH 1/4] drm: add edid_overridden flag to drm_connector Date: Sun, 15 Mar 2026 23:33:03 +0100 Message-ID: <20260315223307.45807-2-johanneswueller@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260315223307.45807-1-johanneswueller@gmail.com> References: <20260315223307.45807-1-johanneswueller@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When an EDID override is in effect, the physical connector may not match reported capabilities. Adds a drm_connector flag that allows drivers to detect such mismatches. Signed-off-by: Johannes Wüller --- drivers/gpu/drm/drm_edid.c | 2 ++ include/drm/drm_connector.h | 8 ++++++++ 2 files changed, 10 insertions(+) diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 26bb7710a462..9b0f410ea2de 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -2373,6 +2373,7 @@ static struct edid *_drm_do_get_edid(struct drm_connector *connector, struct edid *edid, *new; size_t alloc_size = EDID_LENGTH; + connector->edid_overridden = false; override = drm_edid_override_get(connector); if (override) { alloc_size = override->size; @@ -2380,6 +2381,7 @@ static struct edid *_drm_do_get_edid(struct drm_connector *connector, drm_edid_free(override); if (!edid) return NULL; + connector->edid_overridden = true; goto ok; } diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index c18be8c19de0..43d7ac31deba 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -2261,6 +2261,14 @@ struct drm_connector { /** @bad_edid_counter: track sinks that give us an EDID with invalid checksum */ unsigned bad_edid_counter; + /** + * @edid_overridden: Indicates whether the last read EDID was an + * override (e.g. via debugfs edid_override or drm.edid_firmware kernel + * parameter), which can cause the physical connector to differ from + * the advertised capabilities. + */ + bool edid_overridden; + /** * @edid_corrupt: Indicates whether the last read EDID was corrupt. Used * in Displayport compliance testing - Displayport Link CTS Core 1.2 -- 2.53.0