From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B356EC433E4 for ; Mon, 29 Jun 2020 19:01:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8FE502053B for ; Mon, 29 Jun 2020 19:01:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="oTcfFWKe" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729359AbgF2TBE (ORCPT ); Mon, 29 Jun 2020 15:01:04 -0400 Received: from m43-7.mailgun.net ([69.72.43.7]:32667 "EHLO m43-7.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730346AbgF2TAY (ORCPT ); Mon, 29 Jun 2020 15:00:24 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1593457223; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=MGpgHTPanseMUSP/5lHDa6o1Mxq+oOakQ9xuKUP30WY=; b=oTcfFWKeY+TcNxeQMFBvU5xW/rxPfn4d9Xncxw4QCJhKroeqpxZQK1mzt6kZvkYAPHbK8AmM Jn/h+oOFvZ67uQ9kf3RjZA6yBKPepUNYVMNF0xfq0vb3jWx9qULEZ2aLxu12BkEr6m8hWxKA 5HEOwXVLm8L6W6cr9tDJak8hTOs= X-Mailgun-Sending-Ip: 69.72.43.7 X-Mailgun-Sid: WyI0MWYwYSIsICJsaW51eC1rZXJuZWxAdmdlci5rZXJuZWwub3JnIiwgImJlOWU0YSJd Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n03.prod.us-west-2.postgun.com with SMTP id 5efa1958fe1db4db892338cd (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Mon, 29 Jun 2020 16:39:52 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 621F0C433C6; Mon, 29 Jun 2020 16:39:52 +0000 (UTC) Received: from malabar-linux.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: bbhatt) by smtp.codeaurora.org (Postfix) with ESMTPSA id C6CBEC433C8; Mon, 29 Jun 2020 16:39:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org C6CBEC433C8 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=bbhatt@codeaurora.org From: Bhaumik Bhatt To: manivannan.sadhasivam@linaro.org Cc: linux-arm-msm@vger.kernel.org, hemantk@codeaurora.org, jhugo@codeaurora.org, linux-kernel@vger.kernel.org, Bhaumik Bhatt Subject: [PATCH v4 0/9] Introduce features and debugfs/sysfs entries for MHI Date: Mon, 29 Jun 2020 09:39:33 -0700 Message-Id: <1593448782-8385-1-git-send-email-bbhatt@codeaurora.org> X-Mailer: git-send-email 2.7.4 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Introduce independent bus and device voting mechanism for clients and save hardware information from BHI. Allow reading and modifying some MHI variables for debug, test, and informational purposes using debugfs. Read values for device specific hardware information to be used by OEMs in factory testing such as serial number and PK hash using sysfs. This set of patches was tested on arm64 and x86. v4: -Removed bus: mhi: core: Introduce independent voting mechanism patch -Removed bus vote function from debugfs due to independent voting removal -Added helper resume APIs to aid consolidation of spread out code -Added a clean-up patch and a missing host resume in voting API v3: -Add patch to check for pending packets in suspend as a dependency for the independent voting mechanism introduction -Include register dump entry for debugfs to dump MHI, BHI, and BHIe registers -Update commit message for the debugfs patch -Updated Documentation/ABI with the required info for sysfs -Updated debugfs patch to include a new KConfig entry and dependencies -Updated reviewed-by for some patches v2: -Added a new debugfs.c file for specific debugfs entries and code -Updated commit text and addressed some comments for voting change -Made sure sysfs is only used for serial number and OEM PK hash usage Bhaumik Bhatt (9): bus: mhi: core: Remove double occurrence for mhi_ctrl_ev_task() declaration bus: mhi: core: Abort suspends due to outgoing pending packets bus: mhi: core: Use helper API to trigger a non-blocking host resume bus: mhi: core: Trigger a host resume when device vote is requested bus: mhi: core: Use generic name field for an MHI device bus: mhi: core: Introduce helper function to check device state bus: mhi: core: Introduce debugfs entries and counters for MHI bus: mhi: core: Read and save device hardware information from BHI bus: mhi: core: Introduce sysfs entries for MHI Documentation/ABI/stable/sysfs-bus-mhi | 25 ++ MAINTAINERS | 1 + drivers/bus/mhi/Kconfig | 8 + drivers/bus/mhi/core/Makefile | 5 +- drivers/bus/mhi/core/boot.c | 17 +- drivers/bus/mhi/core/debugfs.c | 444 +++++++++++++++++++++++++++++++++ drivers/bus/mhi/core/init.c | 65 ++++- drivers/bus/mhi/core/internal.h | 38 ++- drivers/bus/mhi/core/main.c | 27 +- drivers/bus/mhi/core/pm.c | 19 +- include/linux/mhi.h | 18 +- 11 files changed, 633 insertions(+), 34 deletions(-) create mode 100644 Documentation/ABI/stable/sysfs-bus-mhi create mode 100644 drivers/bus/mhi/core/debugfs.c -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project