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[2001:14ba:a0c3:3a00:264b:feff:fe8b:be8a]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-55f676dc52esm1019907e87.8.2025.08.29.17.23.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 29 Aug 2025 17:23:01 -0700 (PDT) From: Dmitry Baryshkov Subject: [PATCH v3 00/11] drm/connector: hdmi: limit infoframes per driver capabilities Date: Sat, 30 Aug 2025 03:22:56 +0300 Message-Id: <20250830-drm-limit-infoframes-v3-0-32fcbec4634e@oss.qualcomm.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAGBEsmgC/3XQwW7DIAwG4FeJOM8dISM0Oe09ph1oMK2lElZMo 1RR372kVaUd2gvyj+wPi0UwJkIWfbWIhBMxxbGE5qMSw8GOewRyJQsllZbbWoNLAY4UKAONPvp kAzKg2SpvjW+aVooy+pfQ03xnf35LPhDnmC73V6Z6vX2C7WtwqkFC64baOO2lwe47Mm9OZ3scY gibcojVndR/q3tjqWIZ3WnnrPryO/fCuj6WTng6ly/Ij83FzjLC2kS5r1Y7EA+fzwJGnHMZvd4 ASbw2h0UBAAA= X-Change-ID: 20250815-drm-limit-infoframes-e782fa7f3360 To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Sandy Huang , =?utf-8?q?Heiko_St=C3=BCbner?= , Andy Yan , Chen-Yu Tsai , Samuel Holland , Dave Stevenson , =?utf-8?q?Ma=C3=ADra_Canal?= , Raspberry Pi Kernel Maintenance , Liu Ying , Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=3718; i=dmitry.baryshkov@oss.qualcomm.com; h=from:subject:message-id; bh=j2WFIoiYZY4mvy1n1cE7iNg5twCtSflR486EGLADOXY=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBoskRjU90bIF/CWwFMn6YjwNwwP4vc6O+nHPJdM peW29wEpNmJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCaLJEYwAKCRCLPIo+Aiko 1bynCACiJto6tHqy6NRaMI9XSFtJjDhGG9NxaK8XYGS50rbbkRizcc6WRtsCcNv0x4E8tURgw5d xD/LGzTuMjBl03KdrIc1pxIl9YB6IabYmi8V1oapcB9mFf6Z9cA6B/nRxe1rZEppabTUE5N3/Ln AQC0I6KKebn5PuPQtJLUovBxSXnu1nIugsl8CK4KZ7Fp+0IPpKcpLvGQgm/eGjdw8scPgD/i8tm FDGJHbs8XR1rv3RDvp4P5QgCynMvltkRCGGPQCspMHPNY+A8PoH05xLW86JnIQ4B6Rrb8wy9Yrk jKR550siSDIxvPLD7lP43sT32WfeM+BVoBY2Ceq2X/kh56h6 X-Developer-Key: i=dmitry.baryshkov@oss.qualcomm.com; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODIzMDAzMyBTYWx0ZWRfX/2qPMxw90uxG mdQEJpAXlozMBhGFvRwcZSmb46UFnLAUrTB775VWLTjqyL4wXqNm53ZyBd30B7FdNeCvE95fxE+ qgrgb3agVErtsTSFvPDKkpHC6zi+scSEc2UOd0PFN9WXAz3aHT1B1N3sItIAZSA6LGqqB0WbAz2 IpF6rFXdauasqxnJvb7V6ehS48z83YwNfkSE/1eRh6+XEcDd8G09N9ZYUQ4KhChDsLaZOpGGzKu bkQUT1mUTsS1fwKwOUhG9EtF9nIVeKYFZn2unN99xTiP77ry6HDTt24/3tcWfD5olIbarSBBllO wTAZZ9ehHz4tsWQCIE1PXbtrZm9oF8RmfTokAjgDdwm+jk+3iQztqROGJtpM4lPcRZ0eLrKG1YA k9ohEvI6 X-Authority-Analysis: v=2.4 cv=Lco86ifi c=1 sm=1 tr=0 ts=68b24468 cx=c_pps a=EVbN6Ke/fEF3bsl7X48z0g==:117 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=2OwXVqhp2XgA:10 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=9umpI5-D6xKxpy0QfyMA:9 a=QEXdDO2ut3YA:10 a=a_PwQJl-kcHnX1M80qC6:22 X-Proofpoint-GUID: zCGxmVOtAGoqVdjLh4tBrJDabj8bjPb0 X-Proofpoint-ORIG-GUID: zCGxmVOtAGoqVdjLh4tBrJDabj8bjPb0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-08-29_07,2025-08-28_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 adultscore=0 clxscore=1015 malwarescore=0 spamscore=0 suspectscore=0 phishscore=0 priorityscore=1501 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2508230033 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250829_172305_782452_54E2A016 X-CRM114-Status: GOOD ( 19.36 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org It's not uncommon for the particular device to support only a subset of HDMI InfoFrames. It's not a big problem for the kernel, since we adopted a model of ignoring the unsupported Infoframes, but it's a bigger problem for the userspace: we end up having files in debugfs which do mot match what is being sent on the wire. Sort that out, making sure that all interfaces are consistent. Signed-off-by: Dmitry Baryshkov --- Changes in v3: - Fixed supported infoframes initialization (Liu Ying) - Implemented separate flags for DRM-generated InfoFrames and hardware-generated ones - Warn if required InfoFrames are not supported by the driver (Maxime) - Changed drivers to error out if the DRM framework requires the unsupported InfoFrame (Maxime) - Implemented DRM_BRIDGE_OP_HDMI and DRM_BRIDGE_OP_HDMI_AUDIO for Lontium lt9611uxc bridge. - Link to v2: https://lore.kernel.org/r/20250819-drm-limit-infoframes-v2-0-7595dda24fbd@oss.qualcomm.com Changes in v2: - Corrected whitespace / newline issues & other small syntax fixes (Liu Ying) - Added audio to the list of InfoFrames supported by the VC4 driver (Liu Ying) - Changed drm_dbg_kms() to drm_warn_once() in the Audio InfoFrame update code (Liu Ying) - Corrected subject for ITE IT6263 patch (Liu Ying) - Added patch, dropping default list of InfoFrames in drm_bridge_connector. - Link to v1: https://lore.kernel.org/r/20250816-drm-limit-infoframes-v1-0-6dc17d5f07e9@oss.qualcomm.com --- Dmitry Baryshkov (11): drm/connector: let drivers declare infoframes as unsupported drm/bridge: adv7511: declare supported infoframes drm/bridge: ite-it6263: declare supported infoframes drm/bridge: lontium-lt9611: declare supported infoframes drm/bridge: synopsys/dw-hdmi-qp: declare supported infoframes drm/msm: hdmi: declare supported infoframes drm/rockchip: rk3066: declare supported infoframes drm/display: bridge_connector: drop default list for HDMI Infoframes drm/connector: verify that HDMI connectors support necessary InfoFrames drm/display: hdmi-audio: warn if HDMI connector doesn't support Audio IF drm/bridge: lontium-lt9611uxc: switch to HDMI audio helpers drivers/gpu/drm/bridge/adv7511/adv7511_drv.c | 10 +- drivers/gpu/drm/bridge/ite-it6263.c | 11 +- drivers/gpu/drm/bridge/lontium-lt9611.c | 11 +- drivers/gpu/drm/bridge/lontium-lt9611uxc.c | 130 +++++++++------------ drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c | 7 +- drivers/gpu/drm/display/drm_bridge_connector.c | 2 + drivers/gpu/drm/display/drm_hdmi_audio_helper.c | 12 ++ drivers/gpu/drm/display/drm_hdmi_state_helper.c | 53 ++++++++- drivers/gpu/drm/drm_connector.c | 17 +++ drivers/gpu/drm/drm_debugfs.c | 16 ++- drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 8 +- drivers/gpu/drm/rockchip/inno_hdmi.c | 6 +- drivers/gpu/drm/rockchip/rk3066_hdmi.c | 5 +- drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c | 4 +- drivers/gpu/drm/tests/drm_connector_test.c | 49 ++++++++ drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c | 9 ++ drivers/gpu/drm/vc4/vc4_hdmi.c | 6 + include/drm/drm_bridge.h | 14 +++ include/drm/drm_connector.h | 39 +++++++ 19 files changed, 306 insertions(+), 103 deletions(-) --- base-commit: f4028ef65dc4fe9010bcc017597fe0fea6479097 change-id: 20250815-drm-limit-infoframes-e782fa7f3360 Best regards, -- With best wishes Dmitry