From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.forwardemail.net (smtp.forwardemail.net [121.127.44.66]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 19CB13815F9 for ; Sun, 10 May 2026 12:42:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=121.127.44.66 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778416950; cv=none; b=V0h93XikszoPTPRPoVpwTAUGRaXwlu1mxvXBeanvxhfGQOHpSSmVNJIetuidViiT95Jb/4cuMt93779l8Xr7tds9U78dYowsHZ5qEDBjuaU4P6UqLX3wr5RdvFkYzpncFuiuiTq3wvy/agTPszelMH6cfr7QjMHrz2gSB9X7MrY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778416950; c=relaxed/simple; bh=FztXmQwh4mC2uUynEVy1WETtgAdo0g/8/Kg04K4ya5w=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=NBQAOgAlzhVZTkFAuZMz78EEJumaOSYnsfluxB9YXboU+6b6k40AfXzPGTu7hXxQgcOLKM9gc+qltbvIs/vqF8Angjm94hJbApYaFiwFdPMhHzi1H0KfYilMiMmUVLg/kVsquskRfwOfx90HnOlppIQsCBsk11yrH9kKswKqzws= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=kwiboo.se; spf=pass smtp.mailfrom=fe-bounces.kwiboo.se; dkim=pass (2048-bit key) header.d=kwiboo.se header.i=@kwiboo.se header.b=UADs/IYw; arc=none smtp.client-ip=121.127.44.66 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=kwiboo.se Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=fe-bounces.kwiboo.se Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kwiboo.se header.i=@kwiboo.se header.b="UADs/IYw" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kwiboo.se; h=Content-Transfer-Encoding: MIME-Version: Message-ID: Date: Subject: Cc: To: From; q=dns/txt; s=fe-e1b5cab7be; t=1778416939; bh=yEOZPrtRdh/oOouvJfNcSgNf3uIjNq/ESjKn1J+802Q=; b=UADs/IYwfOchHpXteRQeIiRPdEr/YMEI3SIWW/8Jf7wEFAy3STnbWUcqmtOh7/LsMvFnSSk93 Y4/TnU4iSGgz1KjnowTZEHtfPHK0ICI4FR9fy9CamSeycZsiC87JFRTUks1WrKEsSNGOEpZ3lwl ZFXEmf47HvhOUdLPRcr3ZhpxGi8zo5O0N4SR63V7khmxCRPpnByC6WazS7daUp2MKlzevPFmReD PGmcdZ2rMzxdAI5V0NJa/vbriiXm9LrWvsHU6h7zW//LUz2G4eGplxYO7gkmZkbQti/5eRxCiTN 7xkKbOM6Vj1xEjRXO5iB8B3yTmcyrYy4tXRBf1glwP5g== X-Forward-Email-ID: 6a007cee0d91f03a31a0bae7 X-Forward-Email-Sender: rfc822; jonas@kwiboo.se, smtp.forwardemail.net, 121.127.44.66 X-Forward-Email-Version: 2.8.0 X-Forward-Email-Website: https://forwardemail.net X-Complaints-To: abuse@forwardemail.net X-Report-Abuse: abuse@forwardemail.net X-Report-Abuse-To: abuse@forwardemail.net From: Jonas Karlman To: Andrzej Hajda , Neil Armstrong , Robert Foss , Heiko Stuebner Cc: Laurent Pinchart , Jernej Skrabec , Luca Ceresoli , Liu Ying , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Sandy Huang , Andy Yan , Chen-Yu Tsai , Christian Hewitt , Diederik de Haas , Nicolas Frattaroli , Dmitry Baryshkov , dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-sunxi@lists.linux.dev, imx@lists.linux.dev, linux-kernel@vger.kernel.org, Jonas Karlman Subject: [PATCH v5 00/21] drm: bridge: dw_hdmi: Misc enable/disable, CEC and EDID cleanup Date: Sun, 10 May 2026 12:40:44 +0000 Message-ID: <20260510124111.1226584-1-jonas@kwiboo.se> X-Mailer: git-send-email 2.54.0 Precedence: bulk X-Mailing-List: imx@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This is a revival of an old dw-hdmi series and is the first series part of a new effort to upstream old LibreELEC HDMI 2.0 patches for Rockchip RK33xx devices. This series ensure poweron/poweroff and CEC phys addr invalidation is happening under drm mode_config mutex lock, and also ensure EDID is updated after a HPD low voltage pulse by changing to debounce hotplug processing. These changes have mainly been tested on Rockchip RK3328, RK3399 and RK3568 devices using both the dw-hdmi connector and also using a basic convert to use a bridge connector. Testing with a Rock Pi 4 (RK3399) using a Reaspberry Pi Monitor with Linux kms client console using drm.debug=0xe should log something like following: Power cycle monitor using the power button: [CONNECTOR:68:HDMI-A-1] CEA VCDB 0x4a [CONNECTOR:68:HDMI-A-1] HDMI: DVI dual 0, max TMDS clock 0 kHz [CONNECTOR:68:HDMI-A-1] ELD monitor RPI MON156 [CONNECTOR:68:HDMI-A-1] HDMI: latency present 0 0, video latency 0 0, audio latency 0 0 [CONNECTOR:68:HDMI-A-1] ELD size 36, SAD count 1 [CONNECTOR:68:HDMI-A-1] Same epoch counter 10 Cable unplugged: [CONNECTOR:68:HDMI-A-1] EDID changed, epoch counter 11 [CONNECTOR:68:HDMI-A-1] status updated from connected to disconnected [CONNECTOR:68:HDMI-A-1] Changed epoch counter 10 => 12 [CONNECTOR:68:HDMI-A-1] generating connector hotplug event [CONNECTOR:68:HDMI-A-1] Sent hotplug event Cable connected: [CONNECTOR:68:HDMI-A-1] CEA VCDB 0x4a [CONNECTOR:68:HDMI-A-1] HDMI: DVI dual 0, max TMDS clock 0 kHz [CONNECTOR:68:HDMI-A-1] ELD monitor RPI MON156 [CONNECTOR:68:HDMI-A-1] HDMI: latency present 0 0, video latency 0 0, audio latency 0 0 [CONNECTOR:68:HDMI-A-1] ELD size 36, SAD count 1 [CONNECTOR:68:HDMI-A-1] status updated from disconnected to connected [CONNECTOR:68:HDMI-A-1] Changed epoch counter 12 => 13 [CONNECTOR:68:HDMI-A-1] generating connector hotplug event [CONNECTOR:68:HDMI-A-1] Sent hotplug event This series has evolved into an initial part of a larger multi series effort to: - drm: bridge: dw_hdmi: Misc enable/disable, CEC and EDID cleanup [v5] - drm/bridge: dw-hdmi: Improve input/output bus format handling - drm/bridge: dw-hdmi: Convert to a HDMI bridge and use of bridge connector - drm/bridge: dw-hdmi: Add and use tmds_char_rate_valid() plat data ops - drm/meson: hdmi: Misc cleanup and use CEC notifier helpers - phy: rockchip: inno-hdmi: Change TMDS rate handling to configure() ops [v2] - drm/rockchip: dw_hdmi: Misc cleanup and propagate bus format - drm/rockchip: dw_hdmi: Enable YCbCr and Deep Color modes Link to snapshot: https://github.com/Kwiboo/linux-rockchip/commits/next-20260508-rk-hdmi-v3/ Changes in v5: - Add patch that holds a bridge ref until connector cleanup, to fix a use-after-free issue during connector cleanup - Add patch that unregister CEC notifier during connector cleanup - Add patch that adds a common suspend helper - Add patch that drops call to drm_bridge_hpd_notify() - Collect r-b tag - Rebased on next-20260508 Link to v4: https://lore.kernel.org/dri-devel/20260504191059.275928-1-jonas@kwiboo.se/ Changes in v4: - Change to use generic CEC notifier helpers - Disable/mask hpd_work until enable_hpd()/hpd_enable() - Read connector status directly from HW regs in hpd_work - Continued rework of HDP and RXSENSE interrupt handling - Collect r-b tags - Rebased on next-20260430 Link to v3: https://lore.kernel.org/dri-devel/20260403185303.80748-1-jonas@kwiboo.se/ Changes in v3: - Rework EDID refresh handling to closer match bridge connector - Use delayed work to debounce HPD processing - Update commit messages - Collect r-b tags - Rebased on next-20260401 Link to v2: https://lore.kernel.org/dri-devel/20240908132823.3308029-1-jonas@kwiboo.se/ Changes in v2: - Add patch to disable scrambler feature when not supported - Add patch to only notify connected status on HPD interrupt - Update commit messages - Collect r-b tags - Rebased on next-20240906 Link to v1: https://lore.kernel.org/dri-devel/20240611155108.1436502-1-jonas@kwiboo.se/ Jonas Karlman (21): drm: bridge: dw_hdmi: Disable scrambler feature when not supported drm: bridge: dw_hdmi: Only notify connected status on HPD interrupt drm: bridge: dw_hdmi: Call poweron/poweroff from atomic enable/disable drm: bridge: dw_hdmi: Use passed mode instead of stored previous_mode drm: bridge: dw_hdmi: Fold poweron and setup functions drm: bridge: dw_hdmi: Remove previous_mode and mode_set drm: bridge: dw_hdmi: Hold bridge ref until connector cleanup drm: bridge: dw_hdmi: Unregister CEC notifier during connector cleanup drm: bridge: dw_hdmi: Invalidate CEC phys addr from connector detect drm: bridge: dw_hdmi: Remove cec_notifier_mutex drm: bridge: dw_hdmi: Extract dw_hdmi_connector_status_update() drm: bridge: dw_hdmi: Use dw_hdmi_connector_status_update() drm: bridge: dw_hdmi: Use display_info is_hdmi and has_audio drm: bridge: dw_hdmi: Use generic CEC notifier helpers drm: bridge: dw_hdmi: Add common suspend helper drm: bridge: dw_hdmi: Use delayed_work to debounce hotplug event drm: bridge: dw_hdmi: Rework HDP and RXSENSE interrupt handling drm: bridge: dw_hdmi: Remove the empty dw_hdmi_setup_rx_sense() drm: bridge: dw_hdmi: Remove the empty dw_hdmi_phy_update_hpd() drm: bridge: dw_hdmi: Merge top and bottom half IRQ handlers drm: bridge: dw_hdmi: Drop call to drm_bridge_hpd_notify() drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c | 5 +- drivers/gpu/drm/bridge/synopsys/Kconfig | 1 + drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 483 +++++++------------- drivers/gpu/drm/meson/meson_dw_hdmi.c | 5 +- drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 13 +- drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c | 2 - include/drm/bridge/dw_hdmi.h | 7 +- 7 files changed, 194 insertions(+), 322 deletions(-) -- 2.54.0