From patchwork Tue May 12 17:42:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bhaumik Bhatt X-Patchwork-Id: 11543667 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 BB4DD139F for ; Tue, 12 May 2020 17:42:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A1DFF206B8 for ; Tue, 12 May 2020 17:42:36 +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="LrFCXyj8" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726465AbgELRm2 (ORCPT ); Tue, 12 May 2020 13:42:28 -0400 Received: from mail26.static.mailgun.info ([104.130.122.26]:13457 "EHLO mail26.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730238AbgELRm1 (ORCPT ); Tue, 12 May 2020 13:42:27 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1589305347; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=mnWGuuIZg71oek6vJFSBqS0FGbEd8YQLoUbrM1p6Dsg=; b=LrFCXyj813/wOdWT05daL/9xLJR7ytXlyqCFNKqRsTxOkHj5PsPrMqTHkENG+4qpRa1Ay9iQ 9VyRWuxyhzWyn4IzARLsFVtja0DoUAtp6g4Yw/VC+iUZh6RhVGNfQYWFo4sodDWR/Yhr2tKi 4h2xUEZP6rT0WwYxbLJVAboGxuw= X-Mailgun-Sending-Ip: 104.130.122.26 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by mxa.mailgun.org with ESMTP id 5ebadffe.7f38d41c83e8-smtp-out-n01; Tue, 12 May 2020 17:42:22 -0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 6FE52C43637; Tue, 12 May 2020 17:42:21 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.0 Received: from bbhatt-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 268A1C433F2; Tue, 12 May 2020 17:42:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 268A1C433F2 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, linux-kernel@vger.kernel.org, hemantk@codeaurora.org, jhugo@codeaurora.org, Bhaumik Bhatt Subject: [PATCH v2 0/6] Introduce features and debugfs/sysfs entries for MHI Date: Tue, 12 May 2020 10:42:08 -0700 Message-Id: <1589305334-19466-1-git-send-email-bbhatt@codeaurora.org> X-Mailer: git-send-email 1.9.1 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@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 information 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. v2: -Please note: an upcoming ath11k driver patch will depend on the following patch: "bus: mhi: core: Introduce independent voting mechanism" -Fixed typo in one of the patches -Updated MAINTAINERS for the sysfs ABI documentation Bhaumik Bhatt (6): bus: mhi: core: Introduce independent voting mechanism 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 | 431 +++++++++++++++++++++++++++++++++ drivers/bus/mhi/core/init.c | 80 +++++- drivers/bus/mhi/core/internal.h | 29 +++ drivers/bus/mhi/core/main.c | 6 +- drivers/bus/mhi/core/pm.c | 79 ++++-- include/linux/mhi.h | 39 ++- 11 files changed, 673 insertions(+), 47 deletions(-) create mode 100644 Documentation/ABI/stable/sysfs-bus-mhi create mode 100644 drivers/bus/mhi/core/debugfs.c