From patchwork Mon Jun 3 03:45:05 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: 10972141 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3F90B14C0 for ; Mon, 3 Jun 2019 03:46:06 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 30E5428800 for ; Mon, 3 Jun 2019 03:46:06 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 22606288BF; Mon, 3 Jun 2019 03:46:06 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4A89D28800 for ; Mon, 3 Jun 2019 03:46:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725872AbfFCDp7 (ORCPT ); Sun, 2 Jun 2019 23:45:59 -0400 Received: from mail-pg1-f193.google.com ([209.85.215.193]:40892 "EHLO mail-pg1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726535AbfFCDp6 (ORCPT ); Sun, 2 Jun 2019 23:45:58 -0400 Received: by mail-pg1-f193.google.com with SMTP id d30so7448690pgm.7 for ; Sun, 02 Jun 2019 20:45:58 -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=g6Lf+23HSQechU41mGLG7xpgsFb3R/Z2h8CM3X+DSWc=; b=IfRJyLDzuRgF3Dvz3X71zFx0BsGX0g52sg0974YDCjYXiDosnudeBm1Ceh3AE4zbMB P7UK3/EvxHVDMBWFSGz58c3E4vCBLX36bNqoDXPcos1426lhucd4jIjNZKQzb3WKLy0H PPocpEVF4cqjd6nJbL6ZrhC3tp1UCb+AD2PgM= 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=g6Lf+23HSQechU41mGLG7xpgsFb3R/Z2h8CM3X+DSWc=; b=N+I2e/yeHbjiE7iprTEe84XaAwxwrmS3u+zrfUgVmh/1zquptTqzWuGUQO9ZgzzV+U djBv65oazX+S/GhGl7kp6zZX3PZeaMqK8YyeqFaaR7vBwJRTg1+UldLfFKOxmam3n7VZ uQdIIVKi+YOpfW9FTo4/8xTPaYQHzgM9kkn5TyC0sBK0YLPyocU+SUdB9zPpzOueIvV7 pYTrUxse4reMWBIa3zqJudvrjfzh7FtTStfW1unFmPoBZHyP0sgDs1gxBCNiUwIlRcfw cE7w8qYuPsBruXdIgP2uMHQ4qf95WeUqY2oESyaxOastkFzjIaGnQdq+h9Xeel2RNsZ5 rIgQ== X-Gm-Message-State: APjAAAUgI/u3H5q33HSxDeizThP3FKtXUxtMV0F0v1SS/4yKyUjhFn/T 3WrNzgbHJMmOL7Ti/O4oZsW91w== X-Google-Smtp-Source: APXvYqwkRDz1voj0iLa2MF5FNoxioGq4wQYWBXcnOZWcUwRP+zV5EhmCNC4Wpc8cOydVhQKYmRlG/Q== X-Received: by 2002:a17:90a:a102:: with SMTP id s2mr27300178pjp.53.1559533557550; Sun, 02 Jun 2019 20:45:57 -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 i73sm11878960pje.9.2019.06.02.20.45.55 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 02 Jun 2019 20:45:56 -0700 (PDT) From: Pi-Hsun Shih Cc: Pi-Hsun Shih , devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS), Erin Lo , Guenter Roeck , linux-arm-kernel@lists.infradead.org (moderated list:ARM/Mediatek SoC support), linux-kernel@vger.kernel.org (open list), linux-mediatek@lists.infradead.org (moderated list:ARM/Mediatek SoC support), linux-remoteproc@vger.kernel.org (open list:REMOTE PROCESSOR (REMOTEPROC) SUBSYSTEM), Nicolas Boichat Subject: [PATCH v10 0/7] Add support for mt8183 SCP. Date: Mon, 3 Jun 2019 11:45:05 +0800 Message-Id: <20190603034529.154969-1-pihsun@chromium.org> X-Mailer: git-send-email 2.22.0.rc1.257.g3120a18244-goog MIME-Version: 1.0 To: unlisted-recipients:; (no To-header on input) Sender: linux-remoteproc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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). * platform/chrome/cros_ec_rpmsg.c: Communicates with the SCP over the rpmsg framework (like what platform/chrome/cros_ec_{i2c,spi}.c does) (Patch 5, 6). * add scp dts node to mt8183 platform (Patch 7). This series (In particular, Patch 7) is based on https://patchwork.kernel.org/cover/10962385/. 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 (3): rpmsg: add rpmsg support for mt8183 SCP. dt-bindings: Add binding for cros-ec-rpmsg. mfd: cros_ec: differentiate SCP from EC by feature bit. .../devicetree/bindings/mfd/cros-ec.txt | 5 +- .../bindings/remoteproc/mtk,scp.txt | 36 + arch/arm64/boot/dts/mediatek/mt8183-evb.dts | 11 + arch/arm64/boot/dts/mediatek/mt8183.dtsi | 12 + drivers/mfd/cros_ec_dev.c | 10 + drivers/remoteproc/Kconfig | 10 + drivers/remoteproc/Makefile | 1 + drivers/remoteproc/mtk_common.h | 77 ++ drivers/remoteproc/mtk_scp.c | 678 ++++++++++++++++++ drivers/remoteproc/mtk_scp_ipi.c | 163 +++++ drivers/rpmsg/Kconfig | 9 + drivers/rpmsg/Makefile | 1 + drivers/rpmsg/mtk_rpmsg.c | 396 ++++++++++ include/linux/mfd/cros_ec.h | 1 + include/linux/platform_data/mtk_scp.h | 167 +++++ include/linux/rpmsg/mtk_rpmsg.h | 30 + 16 files changed, 1606 insertions(+), 1 deletion(-) 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/platform_data/mtk_scp.h create mode 100644 include/linux/rpmsg/mtk_rpmsg.h