From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0D91E606A32C for ; Mon, 2 Nov 2026 10:55:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=RrM4Xekn Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2CE1E10ECE7; Mon, 2 Nov 2026 10:55:02 +0000 (UTC) Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4901010E609 for ; Mon, 2 Nov 2026 10:54:55 +0000 (UTC) Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id E3FAF436A2; Mon, 2 Nov 2026 10:54:54 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E99121F00A16; Mon, 2 Nov 2026 10:54:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793616894; bh=NWG1AS4n4YHpmMswdTb4afagBqt4yYiwr2aDKkk+O1U=; h=From:To:Cc:Subject:Date; b=RrM4Xekn2NJGdxHe6m+N5fvRteB9VeYF7rGQMsBEJcrTgvFVhQ3aMVbbbmOmAGYiz ZSPG7JOeE79UjKX0p8OZXyiFdMti/fXVL3vIUqHrhO5l1nXppUN9DUaG+0a7dWx80W Xdtq4dhk2BGLhuP8LWEjoLwkHY2lHjEvlG6dQEos8Zy+LgOqydZPAJAoXSZvcP9ayh Lbt2vAkvlWEGWlW9ROv3H3vqbJ0OechanzH8utisJFBadnO0FhEYe5GXrovHgMP3fg 4KuneJaXLlk9q1tMA1kvysq/gj7pXP42iT7zSrbcitcxAyx6JMEp0fz7Pbh/WpMPE0 vTYphnlyLItYw== From: Hans Verkuil To: linux-media@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Subject: [PATCH 00/13] media/drm: cec: add EDID_PRESENT Date: Mon, 2 Nov 2026 11:36:51 +0100 Message-ID: X-Mailer: git-send-email 2.53.0 X-Archived-By: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "dri-devel" X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 Using the media CEC framework the application receives events when the Physical and/or Logical Addresses change. However, if the Physical Address changes to f.f.f.f (Invalid), it does not know whether that is because the HDMI link is disconnected, or because the EDID does not provide a valid Physical Address. That can happen because the display does not support CEC, as is the case for DisplayPort inputs or PC monitors. This is important information to have but this is currently missing. This series adds support for that. Currently drivers set the physical address either with cec_s_phys_addr() or with cec_phys_addr_invalidate(), where the second is just a helper function that calls cec_s_phys_addr with CEC_PHYS_ADDR_INVALID. There are also cec_notifier_ counterparts. Change the behavior so that cec_s_phys_addr() is called whenever there is an EDID. In that case CEC_PHYS_ADDR_INVALID means that the EDID is present but does not contain a valid PA. And cec_phys_addr_invalidate() is only called when the video link is disconnected. Most CEC drivers already did that, except for the few that are fixed in the first 6 patches. The remaining patches implement the new functionality where the CEC framework actually reports whether or not the EDID was present, based on whether cec_s_phys_addr or cec_phys_addr_invalidate was called. The drm patches can either be queued up in the drm subsystem independently of the remaining patches, or I can take them through the media subsytem as part of the series, but then I need an Acked/Reviewed-by. Regards, Hans Hans Verkuil (13): gpu: drm: sti: call cec_notifier_phys_addr_invalidate if no EDID gpu: drm: exynos: call cec_notifier_phys_addr_invalidate if no EDID gpu: drm: omapdrm: call cec_s_phys_addr only if EDID is present media: i2c: adv7511-v4l2: call cec_s_phys_addr only if EDID is present media: cec: extron-da-hd-4k-plus: call cec_s_phys_addr only if EDID is present media: cec: core: improve cec_notifier_phys_addr_invalidate media: uapi: cec.h: add CEC_CAP_HAS_EDID_PRESENT/CEC_LOG_ADDRS_FL_EDID_PRESENT Documentation: media: document EDID_PRESENT cap and flag. media: cec: core: add support for EDID_PRESENT media: uapi: cec.h: add CEC_EVENT_FL_STATE_EDID_PRESENT flag Documentation: media: cec-ioc-dqevent.rst: document STATE_EDID_PRESENT flag media: cec: core: implement CEC_EVENT_FL_STATE_EDID_PRESENT Documentation: media: document cec_phys_addr_invalidate Documentation/driver-api/media/cec-core.rst | 10 +++- .../media/cec/cec-ioc-adap-g-caps.rst | 10 ++++ .../media/cec/cec-ioc-adap-g-log-addrs.rst | 9 ++++ .../media/cec/cec-ioc-dqevent.rst | 10 ++++ drivers/gpu/drm/exynos/exynos_hdmi.c | 2 +- drivers/gpu/drm/omapdrm/dss/hdmi4.c | 7 ++- drivers/gpu/drm/omapdrm/dss/hdmi4_cec.c | 5 ++ drivers/gpu/drm/omapdrm/dss/hdmi4_cec.h | 5 ++ drivers/gpu/drm/sti/sti_hdmi.c | 2 +- drivers/media/cec/core/cec-adap.c | 49 ++++++++++++++++--- drivers/media/cec/core/cec-api.c | 3 +- drivers/media/cec/core/cec-core.c | 4 +- drivers/media/cec/core/cec-notifier.c | 13 +++++ drivers/media/cec/core/cec-priv.h | 3 +- .../extron-da-hd-4k-plus.c | 8 ++- drivers/media/i2c/adv7511-v4l2.c | 2 +- include/media/cec-notifier.h | 33 +++++++------ include/media/cec.h | 27 +++++----- include/uapi/linux/cec.h | 29 ++++++----- 19 files changed, 171 insertions(+), 60 deletions(-) -- 2.53.0