From patchwork Wed Jan 6 23:17:28 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chun-Kuang Hu X-Patchwork-Id: 12002455 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_INVALID, DKIM_SIGNED,INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 8DE95C433DB for ; Wed, 6 Jan 2021 23:17:52 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4BDA32333D for ; Wed, 6 Jan 2021 23:17:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4BDA32333D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id DEE176E39B; Wed, 6 Jan 2021 23:17:49 +0000 (UTC) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1504B6E364 for ; Wed, 6 Jan 2021 23:17:48 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id 00D422333C; Wed, 6 Jan 2021 23:17:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1609975067; bh=r27Vj/voz22uOFt6pt8tkfK5I1iQpalF/T3j5c4SrVA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JYytbgxzXqernG57j5f4LYEqFJCsYllR3munrVz5WuKuZdGqEAHfc7KuwDLpI48Rh CVVU+VjMIOyTlxux6KOhEtNz46hx2e3Dmhmh+zSlTTsF/iRKHuyotYAWdY4r9oUBpx Rv7GomhhJnqBubtaGw1u/0Gf4RaRhh9ul1awcXbjoNHjDQurIOLRUVqKRgo1oPNSto wxOOaIcb4w9k5dYvyglwvzY7pORCqryMmH/rsiIRqLaZJUCY40IyVGhAihoUV9kbNo yjTtYFZ11PaG7LuVR2Mk/BJ5bJyGIEjOrL+8dyT13V85nL7YCppW2SZ7FTBdSJ4TeZ FMiNZFo3iVDuA== From: Chun-Kuang Hu To: Matthias Brugger , Philipp Zabel , David Airlie , Daniel Vetter Subject: [PATCH v2 4/5] drm/mediatek: Automatically search unclaimed mtk mutex in mtk_mutex_get() Date: Thu, 7 Jan 2021 07:17:28 +0800 Message-Id: <20210106231729.17173-5-chunkuang.hu@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210106231729.17173-1-chunkuang.hu@kernel.org> References: <20210106231729.17173-1-chunkuang.hu@kernel.org> X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Chun-Kuang Hu , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: CK Hu Moving mutex resource management from client driver to mutex driver could prevent client drivers negotiating for resource management. Signed-off-by: CK Hu Signed-off-by: Chun-Kuang Hu --- drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 2 +- drivers/gpu/drm/mediatek/mtk_mutex.c | 16 ++++++++-------- drivers/gpu/drm/mediatek/mtk_mutex.h | 2 +- 3 files changed, 10 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c index bba87a036fa8..1e3a9450680b 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c @@ -773,7 +773,7 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev, if (!mtk_crtc->ddp_comp) return -ENOMEM; - mtk_crtc->mutex = mtk_mutex_get(priv->mutex_dev, pipe); + mtk_crtc->mutex = mtk_mutex_get(priv->mutex_dev); if (IS_ERR(mtk_crtc->mutex)) { ret = PTR_ERR(mtk_crtc->mutex); dev_err(dev, "Failed to get mutex: %d\n", ret); diff --git a/drivers/gpu/drm/mediatek/mtk_mutex.c b/drivers/gpu/drm/mediatek/mtk_mutex.c index 98a060bf225d..66344759e622 100644 --- a/drivers/gpu/drm/mediatek/mtk_mutex.c +++ b/drivers/gpu/drm/mediatek/mtk_mutex.c @@ -228,18 +228,18 @@ static const struct mtk_mutex_data mt8173_mutex_driver_data = { .mutex_sof_reg = MT2701_MUTEX0_SOF0, }; -struct mtk_mutex *mtk_mutex_get(struct device *dev, unsigned int id) +struct mtk_mutex *mtk_mutex_get(struct device *dev) { struct mtk_mutex_ctx *mtx = dev_get_drvdata(dev); + int i; - if (id >= 10) - return ERR_PTR(-EINVAL); - if (mtx->mutex[id].claimed) - return ERR_PTR(-EBUSY); - - mtx->mutex[id].claimed = true; + for (i = 0; i < 10; i++) + if (!mtx->mutex[i].claimed) { + mtx->mutex[i].claimed = true; + return &mtx->mutex[i]; + } - return &mtx->mutex[id]; + return ERR_PTR(-EBUSY); } void mtk_mutex_put(struct mtk_mutex *mutex) diff --git a/drivers/gpu/drm/mediatek/mtk_mutex.h b/drivers/gpu/drm/mediatek/mtk_mutex.h index b678e0988a37..6fe4ffbde290 100644 --- a/drivers/gpu/drm/mediatek/mtk_mutex.h +++ b/drivers/gpu/drm/mediatek/mtk_mutex.h @@ -10,7 +10,7 @@ struct regmap; struct device; struct mtk_mutex; -struct mtk_mutex *mtk_mutex_get(struct device *dev, unsigned int id); +struct mtk_mutex *mtk_mutex_get(struct device *dev); int mtk_mutex_prepare(struct mtk_mutex *mutex); void mtk_mutex_add_comp(struct mtk_mutex *mutex, enum mtk_ddp_comp_id id);