From patchwork Fri Apr 2 06:17:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Deepak Kumar Singh X-Patchwork-Id: 12180325 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 251EEC433ED for ; Fri, 2 Apr 2021 06:18:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EB6B860FEF for ; Fri, 2 Apr 2021 06:18:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233965AbhDBGS1 (ORCPT ); Fri, 2 Apr 2021 02:18:27 -0400 Received: from m43-7.mailgun.net ([69.72.43.7]:43798 "EHLO m43-7.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233863AbhDBGSZ (ORCPT ); Fri, 2 Apr 2021 02:18:25 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1617344305; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=+fGTIpJoMrZer2FW4wtM/kmw4106dhSKX2a1plXyCSI=; b=XMOiStNdxhDwXP+W8X2PvCCNseCG9HQSozMQS8Kgk8vViWyAZYSNxslxrJovo9Ngu3RiEdlQ 96Syp8T1SbcU7+RfmeASKJvoth0TZR6vSD/cVJrNvIvaKgevLL4Mu9jkvheWaZgWBID+QIgs xGLhONgVhXOo+rp4fOyDDj/g1yQ= X-Mailgun-Sending-Ip: 69.72.43.7 X-Mailgun-Sid: WyI4ZWZiZiIsICJsaW51eC1yZW1vdGVwcm9jQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n02.prod.us-west-2.postgun.com with SMTP id 6066b7308807bcde1d04b500 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Fri, 02 Apr 2021 06:18:24 GMT Sender: deesin=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id D88C6C43463; Fri, 2 Apr 2021 06:18:23 +0000 (UTC) Received: from deesin-linux.qualcomm.com (unknown [202.46.22.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: deesin) by smtp.codeaurora.org (Postfix) with ESMTPSA id 7CF98C43462; Fri, 2 Apr 2021 06:18:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 7CF98C43462 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=fail smtp.mailfrom=deesin@codeaurora.org From: Deepak Kumar Singh To: bjorn.andersson@linaro.org, clew@codeaurora.org Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-remoteproc@vger.kernel.org, Deepak Kumar Singh , Andy Gross Subject: [PATCH V1 2/2] soc: qcom: aoss: Add debugfs entry Date: Fri, 2 Apr 2021 11:47:18 +0530 Message-Id: <1617344238-12137-3-git-send-email-deesin@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1617344238-12137-1-git-send-email-deesin@codeaurora.org> References: <1617344238-12137-1-git-send-email-deesin@codeaurora.org> Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org It can be useful to control the different power states of various parts of hardware for device testing. Add a debugfs node for qmp so messages can be sent to aoss for debugging and testing purposes. Signed-off-by: Chris Lew Signed-off-by: Deepak Kumar Singh --- drivers/soc/qcom/qcom_aoss.c | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) diff --git a/drivers/soc/qcom/qcom_aoss.c b/drivers/soc/qcom/qcom_aoss.c index 5c643f0..1789880 100644 --- a/drivers/soc/qcom/qcom_aoss.c +++ b/drivers/soc/qcom/qcom_aoss.c @@ -4,6 +4,7 @@ */ #include #include +#include #include #include #include @@ -86,6 +87,9 @@ struct qmp { struct clk_hw qdss_clk; struct genpd_onecell_data pd_data; struct qmp_cooling_device *cooling_devs; +#if IS_ENABLED(CONFIG_DEBUG_FS) + struct dentry *debugfs_file; +#endif /* CONFIG_DEBUG_FS */ }; struct qmp_pd { @@ -549,6 +553,34 @@ struct qmp *qmp_get(struct device *dev) } EXPORT_SYMBOL(qmp_get); +#if IS_ENABLED(CONFIG_DEBUG_FS) +static ssize_t aoss_dbg_write(struct file *file, const char __user *userstr, + size_t len, loff_t *pos) +{ + struct qmp *qmp = file->private_data; + char buf[QMP_MSG_LEN] = {}; + int ret; + + if (!len || len >= QMP_MSG_LEN) + return len; + + ret = copy_from_user(buf, userstr, len); + if (ret) { + dev_err(qmp->dev, "copy from user failed, ret:%d\n", ret); + return len; + } + + ret = qmp_send(qmp, buf, QMP_MSG_LEN); + + return ret ? ret : len; +} + +static const struct file_operations aoss_dbg_fops = { + .open = simple_open, + .write = aoss_dbg_write, +}; +#endif /* CONFIG_DEBUG_FS */ + static int qmp_probe(struct platform_device *pdev) { struct resource *res; @@ -603,6 +635,11 @@ static int qmp_probe(struct platform_device *pdev) platform_set_drvdata(pdev, qmp); +#if IS_ENABLED(CONFIG_DEBUG_FS) + qmp->debugfs_file = debugfs_create_file("aoss_send_message", 0220, NULL, + qmp, &aoss_dbg_fops); +#endif /* CONFIG_DEBUG_FS */ + return 0; err_remove_qdss_clk: @@ -619,6 +656,10 @@ static int qmp_remove(struct platform_device *pdev) { struct qmp *qmp = platform_get_drvdata(pdev); +#if IS_ENABLED(CONFIG_DEBUG_FS) + debugfs_remove(qmp->debugfs_file); +#endif /* CONFIG_DEBUG_FS */ + qmp_qdss_clk_remove(qmp); qmp_pd_remove(qmp); qmp_cooling_devices_remove(qmp);