From patchwork Fri Nov 1 10:19:01 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 13859130 Received: from mail-lj1-f172.google.com (mail-lj1-f172.google.com [209.85.208.172]) (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 ED13119AD93 for ; Fri, 1 Nov 2024 10:19:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730456352; cv=none; b=WPaxBpSqn7BrE1N/gt/l+jYkdl9Siglxx3SUzxpb97u5lah5+wHEKNmtJtE0L74R+Y1k6YCOQ8IZ8GkB/P/X6vk/h/gmRYHBq+OI1YF9YX2BBMtfQ9NO7YM0dtRGDNzwCUEDY8Om9VuHzSbK2Vx/gOacxo3Hp7SDqroQjMb9E9Y= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730456352; c=relaxed/simple; bh=QgZZzJg9ZFJE02xI1Hrtot2oVYSJiceonkhnIgQN/h0=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=qstbvSfqhh5sIUC3udgi0hiAEH1gZvzp9XQKcujXvz5Lzw2iHJCQtEs5gD7LPMKZjpZ/iGbVzcoT7HCPNIudEGyAwW6lCmMD1EVqx1e9khMCwmu5AC+Gs5YPQX4s2H2NivNtphP1wao5/r+UqJWfvnoZbAhQ6qPb/ucV1nEIZDc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org; spf=pass smtp.mailfrom=linaro.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b=UVlwytOd; arc=none smtp.client-ip=209.85.208.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="UVlwytOd" Received: by mail-lj1-f172.google.com with SMTP id 38308e7fff4ca-2fc96f9c41fso19426621fa.0 for ; Fri, 01 Nov 2024 03:19:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1730456348; x=1731061148; darn=vger.kernel.org; h=cc:to:content-transfer-encoding:mime-version:message-id:date :subject:from:from:to:cc:subject:date:message-id:reply-to; bh=le/PASSZxeUtTWMl/wNKSD8ec0kDdmO9btc+axn7CcM=; b=UVlwytOd4wnrRNU85aB4M5RO1Mb7Rp0e0Jo4V/ZPhePtBbrqLFgrwhutcitcSWQ7aL 6JMwDMBiMfuMfnSwvUdQgpYjMdIwgUrPHuNX8z2CYNrIbjTVQxogs00hdfwFflLfvn01 D1yy2zBVr+uXZrXmCaKVtPHgXJWhOr4N03vmPJxcA4YEBPX8ZIGxf5s5m7HKzr+fKblv WvyiDzb8vOTNFVP2d3AvrhiUBKYzgFWKixV1NJY/Sn4gQGvCHhabqT6GGHCfoY8txQli 2ME7P6B20li8FFUBZK5HCIC2I8j2BpQSXwfkvOccGRgSrs1qvEYMMRG3RdDwF96EK8RW Y/iQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1730456348; x=1731061148; h=cc:to:content-transfer-encoding:mime-version:message-id:date :subject:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=le/PASSZxeUtTWMl/wNKSD8ec0kDdmO9btc+axn7CcM=; b=E05oEO2YvgbhUoYlGhScJmqMf5LDDrJBsZUsL6hXoNhh43mERu8ZSHaNe17XmfLuIv 3avPxmRERHQXQvZkP0uPel6XU7lmxTkTR56lSUpiLTfOr8TD7p5lyM92Un1xKb/492Fi uS0/LqDf/6fCk5V/1ZjSAviTGkyZTJHa+ceUwBFJ5oRiv5hozcu/du0GrdzA0wkpSS5u oxEiU5g8UiCdkhONeqmrvEMhJnk4SukXKi+nom7pHKXCsjOLvOyw4XTcQ7vlskUcS3Iv DbhbNtvJJBIBJX/yftPMl3Kvv61AXDDda7oyeXI0frKxZgYOx187Htyh3LruZKEnEiHw Iqpw== X-Forwarded-Encrypted: i=1; AJvYcCVCzn/7wP2lvgvV4wLY3yn9jW1vbZEOQ74psuvrwsHVYk46YFm23gK7wgNEAu1v4BNgXAosoAnuoVzWMbPgaJzT2A==@vger.kernel.org X-Gm-Message-State: AOJu0Yy9xjzsSnDInBuKg2H2VY+R3ETEqRy0u+dKl6HOpImRbzlr9bZg 1TG1eX4f9SRnI4bMy9hbR3Ts7lTnyuzPebNqG6PJ0rc7Xn4T0lJKzXok7k5bo8M= X-Google-Smtp-Source: AGHT+IHY7ovUMeRzJsMU5xMtc2Dvgev8mxKT+oIlhDInundzFyWvx582oufvDDooCRwUY9gtgQ/5NA== X-Received: by 2002:a05:651c:985:b0:2fb:569a:5543 with SMTP id 38308e7fff4ca-2fedb488babmr9537901fa.19.1730456347942; Fri, 01 Nov 2024 03:19:07 -0700 (PDT) Received: from umbar.lan ([192.130.178.90]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-2fdef5d6ef4sm5197031fa.48.2024.11.01.03.19.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 Nov 2024 03:19:06 -0700 (PDT) From: Dmitry Baryshkov Subject: [PATCH RFC v2 0/7] drm: add DRM HDMI Codec framework Date: Fri, 01 Nov 2024 12:19:01 +0200 Message-Id: <20241101-drm-bridge-hdmi-connector-v2-0-739ef9addf9e@linaro.org> Precedence: bulk X-Mailing-List: linux-samsung-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIABWrJGcC/32NTQ6CMBCFr2JmbU0pFsSViYkHcGtYQDvAJNKaq SEawt2d9AAu39/3VkjIhAnOuxUYF0oUgwiz34GbujCiIi8ajDZHbUutPM+qZ/KSTH4m5WII6N6 RVdProaqNbeoSQfYvxoE+mf2A++0KrZgTJel+899S5Cijq8L+QS+FkmfbDK4+VbbrzeVJoeN4i DxCu23bD0dTIXXIAAAA X-Change-ID: 20240530-drm-bridge-hdmi-connector-9b0f6725973e To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Jaroslav Kysela , Takashi Iwai , Liam Girdwood , Mark Brown , Phong LE , Inki Dae , Seung-Woo Kim , Kyungmin Park , Krzysztof Kozlowski , Alim Akhtar , Russell King , Chun-Kuang Hu , Philipp Zabel , Matthias Brugger , AngeloGioacchino Del Regno , Sandy Huang , =?utf-8?q?Heiko_St=C3=BCbner?= , Andy Yan , Alain Volmat Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-sound@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-rockchip@lists.infradead.org X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=4653; i=dmitry.baryshkov@linaro.org; h=from:subject:message-id; bh=QgZZzJg9ZFJE02xI1Hrtot2oVYSJiceonkhnIgQN/h0=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBnJKsY88bZNto8DqlmNoOzOCbmLPcIj7Q20qCAJ JjoQmszobCJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCZySrGAAKCRCLPIo+Aiko 1ZMxB/9PlgUbk1D7PhNPxChE5hultBBglq08GH0Umkd+Za2/2Io/+TRzSawGpJdQvyxkjlgfR0V 0y4x1NxVaNkUE0lL9SCdxQENW6FuWm204EDKSf12UssCKVaaxSBhb18R8Y5pevOS+ZxuJiSRann virCc8/G78fIZmOcG+fMTmaAK3JSG29OlKMAzDUMON9dZj7DQVBpShmW5IkenDcOz9Rw7tBwDRl 7MZevUXEUJa6Q458HDM/jZM4XSAiLfaB+vJISqffjuKFlvfRC99iOSplpF6789oJDrsBwunWAe6 n/wG5kc77eAVv8XoWMc/5iYXHHRut+GnvvCeHuKnPEFbapd6 X-Developer-Key: i=dmitry.baryshkov@linaro.org; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A While porting lt9611 DSI-to-HDMI bridge driver to use HDMI Connector framework, I stumbled upon an issue while handling the Audio InfoFrames. The HDMI codec callbacks weren't receiving the drm_atomic_state, so there was no simple way to get the drm_connector that stayed at the end of the bridge chain. At the same point the drm_hdmi_connector functions expected to get drm_connector instance. While looking for a way to solve the issue, I stumbled upon several deficiencies in existing hdmi_codec_ops implementations. Only few of the implementations were able to handle codec's 'plugged' callback. One third of the drivers didn't implement the get_eld() callback. Most of the issues can be solved if drm_connector handles hdmi-audio-codec on its own, delegating functionality to the actual implementation, be it a driver that implements drm_connector or drm_bridge. Implement such high-level framework, adding proper support for Audio InfoFrame generation to the LT9611 driver. Several design decisions to be kept in mind: - drm_connector_hdmi_codec is kept as simple as possible. It implements generic functionality (ELD, hotplug, registration). - drm_hdmi_connector sets up HDMI codec device if the connector is setup correspondingly (either I2S or S/PDIF is marked as supported). - drm_bridge_connector provides a way to link HDMI audio codec funcionality in the drm_bridge with the drm_connector_hdmi_codec framework. - It might be worth reverting the no_i2s_capture / no_spdif_capture bits. Only TDA889x driver sets them, while it's safe to assume that most of HDMI / DP devices do not support ARC / capture. I think the drivers should opt-in capture support rather than having to opt-out of it. This series is in the RFC stage, so some bits are underdocumented. Signed-off-by: Dmitry Baryshkov --- Changes in v2: - Use drm_atomic_get_old_connector_for_encoder in atomic_disable() to prevent it from crashing - Reworked HDMI codec init/exit, removing drmm_ calls (Maxime) - Drafted the helper to be called from .detect_ctx() that performs HDMI Connector maintenance duties (Maxime) - Moved no_capture_mute to struct hdmi_codec_pdata - Link to v1: https://lore.kernel.org/r/20240615-drm-bridge-hdmi-connector-v1-0-d59fc7865ab2@linaro.org --- Dmitry Baryshkov (7): ASoC: hdmi-codec: pass data to get_dai_id too ASoC: hdmi-codec: move no_capture_mute to struct hdmi_codec_pdata drm/connector: implement generic HDMI codec helpers drm/bridge: connector: add support for HDMI codec framework drm/bridge: lt9611: switch to using the DRM HDMI codec framework drm/display/hdmi: implement connector update functions drm/bridge_connector: hook __drm_atomic_helper_connector_hdmi_update_edid() drivers/gpu/drm/Makefile | 1 + drivers/gpu/drm/bridge/adv7511/adv7511_audio.c | 3 +- drivers/gpu/drm/bridge/analogix/anx7625.c | 3 +- drivers/gpu/drm/bridge/ite-it66121.c | 2 +- drivers/gpu/drm/bridge/lontium-lt9611.c | 170 ++++++++----------- drivers/gpu/drm/bridge/lontium-lt9611uxc.c | 3 +- drivers/gpu/drm/bridge/sii902x.c | 5 +- .../gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c | 3 +- drivers/gpu/drm/display/drm_bridge_connector.c | 160 ++++++++++++++++-- drivers/gpu/drm/display/drm_hdmi_state_helper.c | 56 +++++++ drivers/gpu/drm/drm_connector.c | 10 ++ drivers/gpu/drm/drm_connector_hdmi_codec.c | 186 +++++++++++++++++++++ drivers/gpu/drm/drm_internal.h | 5 + drivers/gpu/drm/exynos/exynos_hdmi.c | 2 +- drivers/gpu/drm/i2c/tda998x_drv.c | 2 +- drivers/gpu/drm/mediatek/mtk_dp.c | 2 +- drivers/gpu/drm/mediatek/mtk_hdmi.c | 2 +- drivers/gpu/drm/rockchip/cdn-dp-core.c | 2 +- drivers/gpu/drm/sti/sti_hdmi.c | 2 +- include/drm/display/drm_hdmi_state_helper.h | 4 + include/drm/drm_bridge.h | 23 +++ include/drm/drm_connector.h | 80 +++++++++ include/sound/hdmi-codec.h | 7 +- sound/soc/codecs/hdmi-codec.c | 4 +- 24 files changed, 601 insertions(+), 136 deletions(-) --- base-commit: f9f24ca362a4d84dd8aeb4b8f3ec28cb6c43dd06 change-id: 20240530-drm-bridge-hdmi-connector-9b0f6725973e Best regards,