From patchwork Tue Nov 3 03:19:00 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Lew X-Patchwork-Id: 11877473 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 5D91715E6 for ; Tue, 3 Nov 2020 13:28:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 37BFE2080C for ; Tue, 3 Nov 2020 13:28:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="XJ7jSZ95" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729260AbgKCN2k (ORCPT ); Tue, 3 Nov 2020 08:28:40 -0500 Received: from z5.mailgun.us ([104.130.96.5]:60760 "EHLO z5.mailgun.us" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729261AbgKCN2k (ORCPT ); Tue, 3 Nov 2020 08:28:40 -0500 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1604410119; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=K4iZAu2xf6QxnytkUeBgpFt/AIpNvbWWhVJYqgyCMSs=; b=XJ7jSZ95EYmHix1/kxFCVEncDu6ss57QyA77YDISteRiYmJ8ZrluuhQkQzgy9FWmWiq0VKkV mAASt28zyQe5mwM0rh18zMcq1qEEVeGGNr0Bh2rmk+vkcGXOtlwC0z3qn/+rkLieZiBstXWa gxSt01/xM50WqE2DxSaB9U6We0c= X-Mailgun-Sending-Ip: 104.130.96.5 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 smtp-out-n02.prod.us-west-2.postgun.com with SMTP id 5fa15af723306fb6028ce0fc (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Tue, 03 Nov 2020 13:28:23 GMT Sender: clew=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 5DA15C43450; Tue, 3 Nov 2020 03:19:21 +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=-2.9 required=2.0 tests=ALL_TRUSTED,BAYES_00,SPF_FAIL, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from swarchsd3-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: clew) by smtp.codeaurora.org (Postfix) with ESMTPSA id 17B2AC433B1; Tue, 3 Nov 2020 03:19:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 17B2AC433B1 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=clew@codeaurora.org From: Chris Lew To: bjorn.andersson@linaro.org, agross@kernel.org Cc: sibis@codeaurora.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, clew@codeaurora.org Subject: [PATCH 1/2] soc: qcom: aoss: Expose send for generic usecase Date: Mon, 2 Nov 2020 19:19:00 -0800 Message-Id: <1604373541-12641-1-git-send-email-clew@codeaurora.org> X-Mailer: git-send-email 2.7.4 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Not all upcoming usecases will have an interface to allow the aoss driver to hook onto. Expose the send api and create a get function to enable drivers to send their own messages to aoss. Signed-off-by: Chris Lew --- drivers/soc/qcom/qcom_aoss.c | 28 +++++++++++++++++++++++++++- include/linux/soc/qcom/qcom_aoss.h | 33 +++++++++++++++++++++++++++++++++ 2 files changed, 60 insertions(+), 1 deletion(-) create mode 100644 include/linux/soc/qcom/qcom_aoss.h diff --git a/drivers/soc/qcom/qcom_aoss.c b/drivers/soc/qcom/qcom_aoss.c index ed2c687c16b3..8f052db1880a 100644 --- a/drivers/soc/qcom/qcom_aoss.c +++ b/drivers/soc/qcom/qcom_aoss.c @@ -8,10 +8,12 @@ #include #include #include +#include #include #include #include #include +#include #define QMP_DESC_MAGIC 0x0 #define QMP_DESC_VERSION 0x4 @@ -222,12 +224,15 @@ static bool qmp_message_empty(struct qmp *qmp) * * Return: 0 on success, negative errno on failure */ -static int qmp_send(struct qmp *qmp, const void *data, size_t len) +int qmp_send(struct qmp *qmp, const void *data, size_t len) { long time_left; size_t tlen; int ret; + if (!qmp || !data) + return -EINVAL; + if (WARN_ON(len + sizeof(u32) > qmp->size)) return -EINVAL; @@ -261,6 +266,7 @@ static int qmp_send(struct qmp *qmp, const void *data, size_t len) return ret; } +EXPORT_SYMBOL_GPL(qmp_send); static int qmp_qdss_clk_prepare(struct clk_hw *hw) { @@ -515,6 +521,26 @@ static void qmp_cooling_devices_remove(struct qmp *qmp) thermal_cooling_device_unregister(qmp->cooling_devs[i].cdev); } +/** + * qmp_get() - get a qmp handle from device tree node + * @np: of node of qmp device + * + * Return: handle to qmp device on success, ERR_PTR() on failure + */ +struct qmp_device *qmp_get(struct device_node *np) +{ + struct platform_device *pdev; + struct qmp *qmp; + + pdev = of_find_device_by_node(np); + if (!pdev) + return ERR_PTR(-EINVAL); + + qmp = platform_get_drvdata(pdev); + return qmp ? qmp : ERR_PTR(-EPROBE_DEFER); +} +EXPORT_SYMBOL_GPL(qmp_get); + static int qmp_probe(struct platform_device *pdev) { struct resource *res; diff --git a/include/linux/soc/qcom/qcom_aoss.h b/include/linux/soc/qcom/qcom_aoss.h new file mode 100644 index 000000000000..05fc0ed3a10d --- /dev/null +++ b/include/linux/soc/qcom/qcom_aoss.h @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2020, The Linux Foundation. All rights reserved. + */ + +#ifndef __QCOM_AOSS_H__ +#define __QCOM_AOSS_H__ + +#include +#include + +struct qmp; + +#if IS_ENABLED(CONFIG_QCOM_AOSS_QMP) + +int qmp_send(struct qmp *qmp, const void *data, size_t len); +struct qmp_device *qmp_get(struct device_node *np); + +#else + +int qmp_send(struct qmp *qmp, const void *data, size_t len) +{ + return -ENODEV; +} + +struct qmp *qmp_get(struct device_node *np) +{ + return ERR_PTR(-ENODEV); +} + +#endif + +#endif