From patchwork Thu Oct 17 10:38:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: AngeloGioacchino Del Regno X-Patchwork-Id: 13839839 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 260D9D21272 for ; Thu, 17 Oct 2024 11:01:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=R0E62asaG7stN6SOIYcuqQYHD4lc96SulFoTGcnCvCI=; b=l+zei+HwdPHdKeKvyJoiCFSizR 1q3zd05uHhq5tlw1waKgqx1wIhfHWQTLpG/CPV5Hpvkgy2Cescwg8hJ/i3Sg0OjwQ1mVKCrt9luxO oGW0zVlVZgTyDfdVigVMCNyvNbl1Q1Ft41CtP4SWBnFdE4xSIrqf0NT0iBwPEIq633yGnQjbxy6hB +YqYcI4Hmqo55OH+hYVtpT3piVF95rbwNgYg53XoSDfkwIoKFrmbP/0PNlyVTO2RArSSgAGg4U0ZG CYANLA7s9k8jfcBjZ5wIvCWweSdskST5ZX+ddP0N5JD0bRQ9GG2xhpSFsZtA0rqu4Nuzucf4MJf5O v4rBSJzA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1t1OFh-0000000EZJw-31qI; Thu, 17 Oct 2024 11:01:09 +0000 Received: from bali.collaboradmins.com ([148.251.105.195]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t1NtY-0000000EX6z-0SRk; Thu, 17 Oct 2024 10:38:21 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1729161493; bh=jXiDkFoZYCjQNU0227vK4uN8/5Y4t0+E87GfULGImjI=; h=From:To:Cc:Subject:Date:From; b=kID0Kicp7MkG1YqnMnQstNhlL2WgIpma4aOl1TEzxkF9mthFzjzhmGrU76DXUdsKa 6X4n+X9LHWZIcUs84HoSr5BhZPenYbcuuZc4TWPQKZwLRPPl0QuEg0eeGOH4ymJS6f 4cLvMlaV2fGI5JIr1/tqqo9mOy4k7z0s/5Hjygm3GxguSD3Jy+TYGOQsmSTa4fh3ZV +ZjWiQUNJC5yJ8ShA2dwGHV1xd9PKEdX/rkLxu/99wedlenDnzwzSojYV/zdBhsoW2 p50K1KujDYOPqwNEWlDmH7lBZWkyLF/dApGcU3KjD0jmAUizIUTa81Xm57WdTPfsxn X2Z5pjHSIYVsw== Received: from IcarusMOD.eternityproject.eu (2-237-20-237.ip236.fastwebnet.it [2.237.20.237]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by bali.collaboradmins.com (Postfix) with ESMTPSA id C31CA17E13A2; Thu, 17 Oct 2024 12:38:12 +0200 (CEST) From: AngeloGioacchino Del Regno To: chunkuang.hu@kernel.org Cc: robh@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, p.zabel@pengutronix.de, airlied@gmail.com, daniel@ffwll.ch, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, shawn.sung@mediatek.com, yu-chang.lee@mediatek.com, ck.hu@mediatek.com, jitao.shi@mediatek.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, wenst@chromium.org, kernel@collabora.com, sui.jingfeng@linux.dev, michael@walle.cc, sjoerd@collabora.com Subject: [PATCH v13 0/3] drm/mediatek: Add support for OF graphs Date: Thu, 17 Oct 2024 12:38:06 +0200 Message-ID: <20241017103809.156056-1-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.46.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241017_033816_352438_79285DE3 X-CRM114-Status: GOOD ( 21.11 ) X-BeenThere: linux-mediatek@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-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Changes in v13: - Added comment in commit description of patch [1/3] to warn about new port scheme. - The series is now fully reviewed, tested, hence *ready*. Changes in v12: - Added comment to describe graph for OVL_ADAPTOR in patch [3/3] as suggested by CK Hu. Changes in v11: - Added OVL_ADAPTOR_MDP_RDMA to OVL Adaptor exclusive components list to avoid failures in graphs with MDP_RDMA inside - Rebased on next-20241004 Changes in v10: - Removed erroneously added *.orig/*.rej files Changes in v9: - Rebased on next-20240910 - Removed redundant assignment and changed a print to dev_err() - Dropped if branch to switch conversion as requested; this will be sent as a separate commit out of this series. Changes in v8: - Rebased on next-20240617 - Changed to allow probing a VDO with no available display outputs Changes in v7: - Fix typo in patch 3/3 Changes in v6: - Added EPROBE_DEFER check to fix dsi/dpi false positive DT fallback case - Dropped refcount of ep_out in mtk_drm_of_get_ddp_ep_cid() - Fixed double refcount drop during path building - Removed failure upon finding a DT-disabled path as requested - Tested again on MT8195, MT8395 boards Changes in v5: - Fixed commit [2/3], changed allOf -> anyOf to get the intended allowance in the binding Changes in v4: - Fixed a typo that caused pure OF graphs pipelines multiple concurrent outputs to not get correctly parsed (port->id); - Added OVL_ADAPTOR support for OF graph specified pipelines; - Now tested with fully OF Graph specified pipelines on MT8195 Chromebooks and MT8395 boards; - Rebased on next-20240516 Changes in v3: - Rebased on next-20240502 because of renames in mediatek-drm Changes in v2: - Fixed wrong `required` block indentation in commit [2/3] The display IPs in MediaTek SoCs are *VERY* flexible and those support being interconnected with different instances of DDP IPs (for example, merge0 or merge1) and/or with different DDP IPs (for example, rdma can be connected with either color, dpi, dsi, merge, etc), forming a full Display Data Path that ends with an actual display. This series was born because of an issue that I've found while enabling support for MT8195/MT8395 boards with DSI output as main display: the current mtk_drm_route variations would not work as currently, the driver hardcodes a display path for Chromebooks, which have a DisplayPort panel with DSC support, instead of a DSI panel without DSC support. There are other reasons for which I wrote this series, and I find that hardcoding those paths - when a HW path is clearly board-specific - is highly suboptimal. Also, let's not forget about keeping this driver from becoming a huge list of paths for each combination of SoC->board->disp and... this and that. For more information, please look at the commit description for each of the commits included in this series. This series is essential to enable support for the MT8195/MT8395 EVK, Kontron i1200, Radxa NIO-12L and, mainly, for non-Chromebook boards and Chromebooks to co-exist without conflicts. Besides, this is also a valid option for MT8188 Chromebooks which might have different DSI-or-eDP displays depending on the model (as far as I can see from the mtk_drm_route attempt for this SoC that is already present in this driver). This series was tested on MT8195 Cherry Tomato and on MT8395 Radxa NIO-12L with both hardcoded paths, OF graph support and partially hardcoded paths, and pure OF graph support including pipelines that require OVL_ADAPTOR support. AngeloGioacchino Del Regno (3): dt-bindings: display: mediatek: Add OF graph support for board path dt-bindings: arm: mediatek: mmsys: Add OF graph support for board path drm/mediatek: Implement OF graphs support for display paths .../bindings/arm/mediatek/mediatek,mmsys.yaml | 28 ++ .../display/mediatek/mediatek,aal.yaml | 40 +++ .../display/mediatek/mediatek,ccorr.yaml | 21 ++ .../display/mediatek/mediatek,color.yaml | 22 ++ .../display/mediatek/mediatek,dither.yaml | 22 ++ .../display/mediatek/mediatek,dpi.yaml | 25 +- .../display/mediatek/mediatek,dsc.yaml | 24 ++ .../display/mediatek/mediatek,dsi.yaml | 27 +- .../display/mediatek/mediatek,ethdr.yaml | 22 ++ .../display/mediatek/mediatek,gamma.yaml | 19 ++ .../display/mediatek/mediatek,merge.yaml | 23 ++ .../display/mediatek/mediatek,od.yaml | 22 ++ .../display/mediatek/mediatek,ovl-2l.yaml | 22 ++ .../display/mediatek/mediatek,ovl.yaml | 22 ++ .../display/mediatek/mediatek,postmask.yaml | 21 ++ .../display/mediatek/mediatek,rdma.yaml | 22 ++ .../display/mediatek/mediatek,ufoe.yaml | 21 ++ drivers/gpu/drm/mediatek/mtk_disp_drv.h | 1 + .../gpu/drm/mediatek/mtk_disp_ovl_adaptor.c | 43 ++- drivers/gpu/drm/mediatek/mtk_dpi.c | 21 +- drivers/gpu/drm/mediatek/mtk_drm_drv.c | 253 +++++++++++++++++- drivers/gpu/drm/mediatek/mtk_drm_drv.h | 2 +- drivers/gpu/drm/mediatek/mtk_dsi.c | 14 +- 23 files changed, 712 insertions(+), 25 deletions(-)