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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" X-Spam-Status: No, score=-16.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_EF,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=ham 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 Both DisplayPort and HDMI standards define a way for the Sink / display to notify the Source / host about some kinds of events. In case of HDMI it's as simple as singnalling changes to the EDID. In case of DisplayPort it's more complicated and requires actual checking of the DPCD registers. Currently USB-C drivers don't have a way to deliver the IRQ_HPD notifications, leading to missing MST notifications. Provide necessary plumbing to let IRQ_HPD events be passed to the DisplayPort drivers. Note: the Yoga C630 UCSI driver and Acer Aspire1 EC driver are not yet enabled to send the IRQ_HPD events. Both of them would need some more reverse engineering to find out how the event is being reported by the EC. Signed-off-by: Dmitry Baryshkov --- Changes in v6: - Corrected indentation of args after the function rename (Chaoyi Chen) - Reordered / rehashed patches to be more logical (Chaoyi Chen) - Fixed build error in the OMAPDSS HDMI driver (Sashiko) - Fixed IRQ_HPD vs PLUG interaction in drm/msm/dp (Sashiko) - Link to v5: https://patch.msgid.link/20260920-hpd-irq-events-v5-0-ff1de0090c72@oss.qualcomm.com Changes in v5: - Renamed drm_connector_status_extra to drm_connector_dp_event (Maxime) - Link to v4: https://patch.msgid.link/20260608-hpd-irq-events-v4-0-30b62b335487@oss.qualcomm.com Changes in v4: - Renamed drm_connector_oob_hotplug_event() to drm_connector_dp_oob_status() (Maxime) - Reworked commit messages, explaining what it is about (Bjorn) - Rearranged commits, making them a bit more logical. - Link to v3: https://patch.msgid.link/20260421-hpd-irq-events-v3-0-44d2bf40dfc2@oss.qualcomm.com Changes in v3: - Fixed build error if aux bridges are disabled (Intel GFX CI) - Link to v2: https://patch.msgid.link/20260420-hpd-irq-events-v2-0-402ffe27e9e9@oss.qualcomm.com Changes in v2: - Change irq_hpd arg to be an enum, possibly desribing other uses (Toni) - Account for that, chaning the API accordingly (with_irq -> extra, etc.) - Wire up AUX bridge notifications - Link to v1: https://patch.msgid.link/20260416-hpd-irq-events-v1-0-1ab1f1cfb2b2@oss.qualcomm.com To: Maarten Lankhorst To: Maxime Ripard To: Thomas Zimmermann To: David Airlie To: Simona Vetter To: Heikki Krogerus To: Greg Kroah-Hartman To: Andrzej Hajda To: Neil Armstrong To: Robert Foss To: Laurent Pinchart To: Jonas Karlman To: Jernej Skrabec To: Luca Ceresoli To: Jani Nikula To: Rodrigo Vivi To: Joonas Lahtinen To: Tvrtko Ursulin To: Francesco Dolcini To: Kevin Hilman To: Jerome Brunet To: Martin Blumenstingl To: Rob Clark To: Dmitry Baryshkov To: Abhinav Kumar To: Jessica Zhang To: Sean Paul To: Marijn Suijten To: Tomi Valkeinen To: Bjorn Andersson To: Konrad Dybcio To: Pengyu Luo To: Chaoyi Chen Cc: dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org Cc: linux-usb@vger.kernel.org Cc: intel-gfx@lists.freedesktop.org Cc: intel-xe@lists.freedesktop.org Cc: linux-amlogic@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-arm-msm@vger.kernel.org Cc: freedreno@lists.freedesktop.org --- Dmitry Baryshkov (9): drm/connector: report out-of-band IRQ_HPD events drm/connector: pass down IRQ_HPD to the drivers drm/bridge: pass down IRQ_HPD to the drivers drm/bridge: pass extra events to the HPD callback drm/bridge: aux-hpd: let drivers pass IRQ_HPD events drm/msm/dp: don't take extra references on multiple plug events drm/msm: dp: handle the IRQ_HPD events reported by USB-C soc: qcom: pmic-glink-altmode: pass down HPD_IRQ events usb: typec: ucsi: huawei-gaokun: pass down HPD_IRQ events drivers/gpu/drm/bridge/aux-hpd-bridge.c | 11 +++++---- drivers/gpu/drm/bridge/chrontel-ch7033.c | 3 ++- drivers/gpu/drm/bridge/lontium-lt8912b.c | 3 ++- drivers/gpu/drm/bridge/lontium-lt9611uxc.c | 3 ++- drivers/gpu/drm/bridge/ti-tfp410.c | 3 ++- drivers/gpu/drm/display/drm_bridge_connector.c | 22 ++++++++++-------- drivers/gpu/drm/drm_bridge.c | 20 ++++++++++------- drivers/gpu/drm/drm_connector.c | 22 ++++++++++-------- drivers/gpu/drm/i915/display/intel_dp.c | 3 ++- drivers/gpu/drm/meson/meson_encoder_hdmi.c | 3 ++- drivers/gpu/drm/msm/dp/dp_display.c | 12 +++++++--- drivers/gpu/drm/msm/dp/dp_drm.h | 3 ++- drivers/gpu/drm/omapdrm/dss/hdmi4.c | 3 ++- drivers/gpu/drm/omapdrm/dss/hdmi5.c | 3 ++- drivers/soc/qcom/pmic_glink_altmode.c | 6 ++++- drivers/usb/typec/altmodes/displayport.c | 25 +++++++++++++-------- drivers/usb/typec/ucsi/ucsi_huawei_gaokun.c | 11 +++++---- include/drm/bridge/aux-bridge.h | 13 +++++++++-- include/drm/drm_bridge.h | 31 +++++++++++++++++++++----- include/drm/drm_connector.h | 24 +++++++++++++++++--- 20 files changed, 158 insertions(+), 66 deletions(-) --- base-commit: 725953d4da85cfb97a4c309fad6346b72f8529e7 change-id: 20260414-hpd-irq-events-e72bc076a5f1 Best regards, -- With best wishes Dmitry _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic