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[2003:eb:a703:ae00:ca7f:54ff:fe01:9321]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-48b382f8c4asm14067659f8f.37.2026.10.03.09.15.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 03 Oct 2026 09:15:52 -0700 (PDT) From: =?UTF-8?q?Johannes=20W=C3=BCller?= To: Harry Wentland , Leo Li , Alex Deucher , =?UTF-8?q?Christian=20K=C3=B6nig?= , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann Cc: =?UTF-8?q?Johannes=20W=C3=BCller?= , Rodrigo Siqueira , David Airlie , Simona Vetter , Jani Nikula , amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [RESEND PATCH v2 1/2] drm: add edid_overridden flag to drm_connector Date: Sat, 3 Oct 2026 18:15:07 +0200 Message-ID: <20261003161525.23600-2-johanneswueller@gmail.com> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261003161525.23600-1-johanneswueller@gmail.com> References: <20261003161525.23600-1-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 --- v2: rebased, no functional change. 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 42f4e41c459f..9ea6f5f19131 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -2424,6 +2424,7 @@ 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; @@ -2431,6 +2432,7 @@ 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 899643586bb3..d242fb922741 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -2394,6 +2394,14 @@ 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 -- 2.56.0