From patchwork Wed Sep 4 06:16:38 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pi-Hsun Shih X-Patchwork-Id: 11129399 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 33EAF1920 for ; Wed, 4 Sep 2019 06:17:15 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 0C9F82341D for ; Wed, 4 Sep 2019 06:17:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ge00HDQ4"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="kyjKVGP7" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0C9F82341D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=chromium.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=eiMEi1U32idCGaow/p8wUWyXWDj2Pj9CBzuP5C7lSPE=; b=ge00HDQ4tirx1/ N6G8pW8mJnBOPsDpmgcoRdQ7qfrn3lIy8OZgxhDpDbAGcFSpZVxHG7b/GL6HYKKPv1cNewbsOdF5p DCnrr6gkrRrC7qYJ2qz5pnqA0Oor7bf6l+azbg0SjuT+q5YPK6gnm7LL/YNRTb3r1t1cDnRmqgHz0 DmXO98DaiWGHu6AA8btKQMC3LMfhWhik9WTqWbM9LcDomBUPep2q445qRFKM988pkGhA2+ZN6l4o5 Hp+bK5V4s/JUhWW91OGjdmV8oDnEknibAkgXNhgzyrzRSQOdQ3MK8bczjakk9xOkqyY/H8d1Vpbl3 WlMPhfliMN3ftVKb3Thw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1i5ObS-0001Op-8m; Wed, 04 Sep 2019 06:17:14 +0000 Received: from mail-pf1-x444.google.com ([2607:f8b0:4864:20::444]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1i5ObB-0001AE-HZ for linux-mediatek@lists.infradead.org; Wed, 04 Sep 2019 06:16:59 +0000 Received: by mail-pf1-x444.google.com with SMTP id w16so12551055pfn.7 for ; Tue, 03 Sep 2019 23:16:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=22d0ech3kjG22vN+UlaTDlFS/jgnfmWtSpKw520rd3E=; b=kyjKVGP71Jpbv+TAY+PCOO30yjWz4TMYIpQLWOpCIL6qVbMdNNo7WNTNzPU6vs3xNb fFrGm4tjkoX+C5X3uRaApb9xU4TgcPDbJY6cYVJsYTjyWZZGZDiuK5y8omoUdf5DqF7o a0mNW3jzeJChzAlRUSehwWzxETo+ekHJsx0I4= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=22d0ech3kjG22vN+UlaTDlFS/jgnfmWtSpKw520rd3E=; b=CvapPYvUUiKKG26cFZmtJLIlxxjfyAiEydGnvtzOPMokzpd7wsezocSjdrbqc5pfzV n97H5i0sIXLI78tsZcjtvdnyfE8pfZmYQE99AacT1rlw1DfxFdNEW8iC5lKOoDcy3Kt4 Zw45q0JzcBsdyFj+ZoOq9ygTdUKSYYerwnpyNK0YaE+lTxkULf6QQ8zEg3xl1DoVXDXM OAdUAYSTCWhqKqLdDufeBJ94EsEU0fxnToTdBxg1qaGSpo7PMjqkwpjL/erLu96dgf9z DA1zif2Gnm9uW11uGPwjUueSfA7KwDouKlEI24oJGjE/YtmBFzH30VzR6Sg0xH9si23i bUmA== X-Gm-Message-State: APjAAAVQMb9i1Xy+oow8ncT0h/TD+Vd71lTzuMziWms4ZQ/jUadjtyj/ uPsdhs63wMqS3EKqA4HxR3wDQQ== X-Google-Smtp-Source: APXvYqyUXwDyTzZBWgNVX7W5eukO5i2fWeSorNnvGkVrkWVRFqJJW1jdLVwzYzRX6r6wxch8v8i/Kg== X-Received: by 2002:a17:90a:ac14:: with SMTP id o20mr3293490pjq.143.1567577816416; Tue, 03 Sep 2019 23:16:56 -0700 (PDT) Received: from pihsun-z840.tpe.corp.google.com ([2401:fa00:1:10:7889:7a43:f899:134c]) by smtp.googlemail.com with ESMTPSA id r2sm27248750pfq.60.2019.09.03.23.16.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Sep 2019 23:16:55 -0700 (PDT) From: Pi-Hsun Shih To: Subject: [PATCH v17 0/5] Add support for mt8183 SCP. Date: Wed, 4 Sep 2019 14:16:38 +0800 Message-Id: <20190904061649.69099-1-pihsun@chromium.org> X-Mailer: git-send-email 2.23.0.187.g17f5b7556c-goog MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190903_231657_606666_1A6BDB02 X-CRM114-Status: GOOD ( 16.54 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2607:f8b0:4864:20:0:0:0:444 listed in] [list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , "open list:REMOTE PROCESSOR REMOTEPROC SUBSYSTEM" , open list , "moderated list:ARM/Mediatek SoC support" , Pi-Hsun Shih , "moderated list:ARM/Mediatek SoC support" Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org Add support for controlling and communicating with mt8183's system control processor (SCP), using the remoteproc & rpmsg framework. And also add a cros_ec driver for CrOS EC host command over rpmsg. The overall structure of the series is: * remoteproc/mtk_scp.c: Control the start / stop of SCP (Patch 2, 3). * remoteproc/mtk_scp_ipi.c: Communicates to SCP using inter-processor interrupt (IPI) and shared memory (Patch 2, 3). * rpmsg/mtk_rpmsg.c: Wrapper to wrap the IPI communication into a rpmsg device. Supports name service for SCP firmware to announce channels (Patch 4). * add scp dts node to mt8183 platform (Patch 5). Changes from v16: - Change the desc_lock mutex to be a per-id lock. - Put the execution of handler inside the per-id lock, to prevent race between scp_ipi_unregister and handler being run. - Move the initialization of mutex to before scp_ipi_register. Changes from v15: - Fix a bug on incorrect usage of wait_event_timeout return value. Changes from v14: - Fix a typo on variable in DEBUG section. Changes from v13: - Move include/linux/platform_data/mtk_scp.h to include/linux/remoteproc/mtk_scp.h. - Rename scp_get_reserve_* to scp_get_reserved_*. - Add lock for access of scp->ipi_desc. - Lock the whole ipi_send function. - Move more setting of cache size from SCP firmware to kernel driver, to prevent problem while loading firmware onto DRAM. - Minor fixes addressing comment. Changes from v12: - Initialize cache before firmware load, to avoid problem while loading large firmware. - Disable watchdog before stopping SCP, to avoid extra warning message. - Fix new warnings by checkpatch. Changes from v11: - Fixed a bug that mtk_rpmsg_endpoint is not properly cleaned up if rproc_boot fails. - Add missing documentation in comment. Changes from v10: - Drop applied cros_ec_rpmsg patches. - Add clock reset before loading SCP firmware. - Fix some type mismatch warnings when printing debug messages. Changes from v9: - Remove reserve-memory-vpu_share node. - Remove change to cros_ec_commands.h (That is already in https://lore.kernel.org/lkml/20190518063949.GY4319@dell/T/) Changes from v8: - Rebased onto https://patchwork.kernel.org/cover/10962385/. - Drop merged cros_ec_rpmsg patch, and add scp dts node patch. - Add more reserved memory region. Changes from v7: - Rebase onto https://lore.kernel.org/patchwork/patch/1059196/. - Fix clock enable/disable timing for SCP driver. - Add more SCP IPI ID. Changes from v6: - Decouple mtk_rpmsg from mtk_scp. - Change data of EC response to be aligned to 4 bytes. Changes from v5: - Add device tree binding document for cros_ec_rpmsg. - Better document in comments for cros_ec_rpmsg. - Remove dependency on CONFIG_ in binding tree document. Changes from v4: - Merge patch 6 (Load ELF firmware) into patch 2, so the driver loads ELF firmware by default, and no longer accept plain binary. - rpmsg_device listed in device tree (as a child of the SCP node) would have it's device tree node mapped to the rpmsg_device, so the rpmsg driver can use the properties on device tree. Changes from v3: - Make writing to SCP SRAM aligned. - Add a new patch (Patch 6) to load ELF instead of bin firmware. - Add host event support for EC driver. - Fix some bugs found in testing (missing spin_lock_init, rproc_subdev_unprepare to rproc_subdev_stop). - Fix some coding style issue found by checkpatch.pl. Changes from v2: - Fold patch 3 into patch 2 in v2. - Move IPI id around to support cross-testing for old and new firmware. - Finish more TODO items. Changes from v1: - Extract functions and rename variables in mtk_scp.c. - Do cleanup properly in mtk_rpmsg.c, which also removes the problem of short-lived work items. - Code format fix based on feedback for cros_ec_rpmsg.c. - Extract feature detection for SCP into separate patch (Patch 6). Eddie Huang (1): arm64: dts: mt8183: add scp node Erin Lo (3): dt-bindings: Add a binding for Mediatek SCP remoteproc/mediatek: add SCP support for mt8183 remoteproc: mt8183: add reserved memory manager API Pi-Hsun Shih (1): rpmsg: add rpmsg support for mt8183 SCP. .../bindings/remoteproc/mtk,scp.txt | 36 + arch/arm64/boot/dts/mediatek/mt8183-evb.dts | 11 + arch/arm64/boot/dts/mediatek/mt8183.dtsi | 12 + drivers/remoteproc/Kconfig | 10 + drivers/remoteproc/Makefile | 1 + drivers/remoteproc/mtk_common.h | 94 +++ drivers/remoteproc/mtk_scp.c | 722 ++++++++++++++++++ drivers/remoteproc/mtk_scp_ipi.c | 177 +++++ drivers/rpmsg/Kconfig | 9 + drivers/rpmsg/Makefile | 1 + drivers/rpmsg/mtk_rpmsg.c | 414 ++++++++++ include/linux/remoteproc/mtk_scp.h | 168 ++++ include/linux/rpmsg/mtk_rpmsg.h | 38 + 13 files changed, 1693 insertions(+) create mode 100644 Documentation/devicetree/bindings/remoteproc/mtk,scp.txt create mode 100644 drivers/remoteproc/mtk_common.h create mode 100644 drivers/remoteproc/mtk_scp.c create mode 100644 drivers/remoteproc/mtk_scp_ipi.c create mode 100644 drivers/rpmsg/mtk_rpmsg.c create mode 100644 include/linux/remoteproc/mtk_scp.h create mode 100644 include/linux/rpmsg/mtk_rpmsg.h