From patchwork Fri Apr 23 05:58:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eizan Miyamoto X-Patchwork-Id: 427025 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=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, 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 B7672C43461 for ; Fri, 23 Apr 2021 05:59:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8CE23613BD for ; Fri, 23 Apr 2021 05:59:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240661AbhDWF7n (ORCPT ); Fri, 23 Apr 2021 01:59:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42864 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240610AbhDWF7l (ORCPT ); Fri, 23 Apr 2021 01:59:41 -0400 Received: from mail-pj1-x102b.google.com (mail-pj1-x102b.google.com [IPv6:2607:f8b0:4864:20::102b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 65C3DC06174A for ; Thu, 22 Apr 2021 22:59:04 -0700 (PDT) Received: by mail-pj1-x102b.google.com with SMTP id cu16so20546507pjb.4 for ; Thu, 22 Apr 2021 22:59:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=yiAcF7/EwGsVTnm/KaKw4OR9M6sL1Co2VCdZKQI4p/0=; b=Zjglmk7B7C3da6aWjzL2ebSM1WB1jlSPt927qLqbJ+/9q+L9IsbnMK/Pz/6SW7LxHE GQL5wmlG0bzs7Ooesq0mHdrODpUF65y7dVPLpRrni1O9xPc7qCB17nz9nLb6iYZRv2Ln dAtE+qwiCn4d1gTK4co7+mESQy5U6dBG6dksI= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=yiAcF7/EwGsVTnm/KaKw4OR9M6sL1Co2VCdZKQI4p/0=; b=lP/SpqbkRejFQFM6PgqVFvK5cXL9atDFXDwiv/rPewBzJGCxoPOk5Iv9d/1mQn02yi uzxqc3HB8fjEMs1dlt4jqlaEoPFK1jjNq+wtf8GQXRaKvWCkv/B9kM84YnkElj4AHUYh 4KwipUe3hKXMaO7qVX/op5s1XLLhMAjGeTYat08tXSWsa5BLOmqnbKw+7xxRmAPLJS7/ mzZe6KPyhqpwRYMruf+pmxON3SrNARVimOJLo+m9dbNxWRz5r9lx+WvEkvktMFxdZ/A3 PxfAn3wpU8ZdhiSwS2mgFoDIWov6ki83tPrTtrh/6AYekEBnVZvxk9zWYFyTBg44SglI zh9A== X-Gm-Message-State: AOAM530FIRhzg+yejHmiQXHtMWFAApgh3+EGEDJMElxp5FoI1jgyJnxt jFOL7YSb1AH3NLNsLBGZODnL4A== X-Google-Smtp-Source: ABdhPJyZDeeqBMLrYrovs9jwIPtJnn0qpnzmHzSKWb84On4ThfdJXfv1HZfAPSSnZ2F0GYiCc4r0mA== X-Received: by 2002:a17:90a:de17:: with SMTP id m23mr2698590pjv.16.1619157543910; Thu, 22 Apr 2021 22:59:03 -0700 (PDT) Received: from localhost ([2401:fa00:9:14:308c:235d:f7a2:53a1]) by smtp.gmail.com with UTF8SMTPSA id a1sm3681575pfi.161.2021.04.22.22.58.59 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 22 Apr 2021 22:59:03 -0700 (PDT) From: Eizan Miyamoto To: linux-kernel@vger.kernel.org Cc: enric.balletbo@collabora.com, chunkuang.hu@kernel.org, yong.wu@mediatek.com, Eizan Miyamoto , Andrew-CT Chen , Houlong Wei , Matthias Brugger , Mauro Carvalho Chehab , Minghsiu Tsai , linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org, linux-mediatek@lists.infradead.org Subject: [PATCH v1 2/4] mtk-mdp: use pm_runtime in MDP component driver Date: Fri, 23 Apr 2021 15:58:39 +1000 Message-Id: <20210423155824.v1.2.I909f5375d930f5d0cc877128e30e2a67078b674c@changeid> X-Mailer: git-send-email 2.31.1.498.g6c1eba8ee3d-goog In-Reply-To: <20210423055842.2490679-1-eizan@chromium.org> References: <20210423055842.2490679-1-eizan@chromium.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Without this change, the MDP components are not fully integrated into the runtime power management subsystem, and the MDP driver does not work. For each of the component device drivers to be able to call pm_runtime_get/put_sync() a pointer to the component's device struct had to be added to struct mtk_mdp_comp, set by mtk_mdp_comp_init(). Note that the dev argument to mtk_mdp_comp_clock_on/off() has been removed. Those functions used to be called from the "master" mdp driver in mtk_mdp_core.c, but the component's device pointer no longer corresponds to the mdp master device pointer, which is not the right device to pass to pm_runtime_put/get_sync() which we had to add to get the driver to work properly. Signed-off-by: Eizan Miyamoto --- drivers/media/platform/mtk-mdp/mtk_mdp_comp.c | 19 ++++++++++++++++--- drivers/media/platform/mtk-mdp/mtk_mdp_comp.h | 6 ++++-- drivers/media/platform/mtk-mdp/mtk_mdp_core.c | 6 ++---- 3 files changed, 22 insertions(+), 9 deletions(-) diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_comp.c b/drivers/media/platform/mtk-mdp/mtk_mdp_comp.c index 3fbbcf05440a..84f9c529d74a 100644 --- a/drivers/media/platform/mtk-mdp/mtk_mdp_comp.c +++ b/drivers/media/platform/mtk-mdp/mtk_mdp_comp.c @@ -13,6 +13,8 @@ #include #include #include +#include +#include #include "mtk_mdp_comp.h" #include "mtk_mdp_core.h" @@ -51,22 +53,28 @@ static const struct of_device_id mtk_mdp_comp_driver_dt_match[] = { }; MODULE_DEVICE_TABLE(of, mtk_mdp_comp_driver_dt_match); -void mtk_mdp_comp_clock_on(struct device *dev, struct mtk_mdp_comp *comp) +void mtk_mdp_comp_clock_on(struct mtk_mdp_comp *comp) { int i, err; + err = pm_runtime_get_sync(comp->dev); + if (err < 0) + dev_err(comp->dev, + "failed to runtime get, err %d.\n", + err); + for (i = 0; i < ARRAY_SIZE(comp->clk); i++) { if (IS_ERR(comp->clk[i])) continue; err = clk_prepare_enable(comp->clk[i]); if (err) - dev_err(dev, + dev_err(comp->dev, "failed to enable clock, err %d. i:%d\n", err, i); } } -void mtk_mdp_comp_clock_off(struct device *dev, struct mtk_mdp_comp *comp) +void mtk_mdp_comp_clock_off(struct mtk_mdp_comp *comp) { int i; @@ -75,6 +83,8 @@ void mtk_mdp_comp_clock_off(struct device *dev, struct mtk_mdp_comp *comp) continue; clk_disable_unprepare(comp->clk[i]); } + + pm_runtime_put_sync(comp->dev); } static int mtk_mdp_comp_bind(struct device *dev, struct device *master, @@ -84,6 +94,7 @@ static int mtk_mdp_comp_bind(struct device *dev, struct device *master, struct mtk_mdp_dev *mdp = data; mtk_mdp_register_component(mdp, comp); + pm_runtime_enable(dev); return 0; } @@ -94,6 +105,7 @@ static void mtk_mdp_comp_unbind(struct device *dev, struct device *master, struct mtk_mdp_dev *mdp = data; struct mtk_mdp_comp *comp = dev_get_drvdata(dev); + pm_runtime_disable(dev); mtk_mdp_unregister_component(mdp, comp); } @@ -111,6 +123,7 @@ int mtk_mdp_comp_init(struct mtk_mdp_comp *comp, struct device *dev) (enum mtk_mdp_comp_type)of_device_get_match_data(dev); INIT_LIST_HEAD(&comp->node); + comp->dev = dev; for (i = 0; i < ARRAY_SIZE(comp->clk); i++) { comp->clk[i] = of_clk_get(node, i); diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_comp.h b/drivers/media/platform/mtk-mdp/mtk_mdp_comp.h index 956d20c01e34..355e226d74fe 100644 --- a/drivers/media/platform/mtk-mdp/mtk_mdp_comp.h +++ b/drivers/media/platform/mtk-mdp/mtk_mdp_comp.h @@ -11,16 +11,18 @@ * struct mtk_mdp_comp - the MDP's function component data * @node: list node to track sibing MDP components * @clk: clocks required for component + * @dev: component's device */ struct mtk_mdp_comp { struct list_head node; struct clk *clk[2]; + struct device *dev; }; int mtk_mdp_comp_init(struct mtk_mdp_comp *comp, struct device *dev); -void mtk_mdp_comp_clock_on(struct device *dev, struct mtk_mdp_comp *comp); -void mtk_mdp_comp_clock_off(struct device *dev, struct mtk_mdp_comp *comp); +void mtk_mdp_comp_clock_on(struct mtk_mdp_comp *comp); +void mtk_mdp_comp_clock_off(struct mtk_mdp_comp *comp); extern struct platform_driver mtk_mdp_component_driver; diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_core.c b/drivers/media/platform/mtk-mdp/mtk_mdp_core.c index d79bf7f0031a..c55bcfe4cbb7 100644 --- a/drivers/media/platform/mtk-mdp/mtk_mdp_core.c +++ b/drivers/media/platform/mtk-mdp/mtk_mdp_core.c @@ -51,20 +51,18 @@ MODULE_DEVICE_TABLE(of, mtk_mdp_of_ids); static void mtk_mdp_clock_on(struct mtk_mdp_dev *mdp) { - struct device *dev = &mdp->pdev->dev; struct mtk_mdp_comp *comp_node; list_for_each_entry(comp_node, &mdp->comp_list, node) - mtk_mdp_comp_clock_on(dev, comp_node); + mtk_mdp_comp_clock_on(comp_node); } static void mtk_mdp_clock_off(struct mtk_mdp_dev *mdp) { - struct device *dev = &mdp->pdev->dev; struct mtk_mdp_comp *comp_node; list_for_each_entry(comp_node, &mdp->comp_list, node) - mtk_mdp_comp_clock_off(dev, comp_node); + mtk_mdp_comp_clock_off(comp_node); } static void mtk_mdp_wdt_worker(struct work_struct *work)