From patchwork Fri Jun 11 04:01:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eizan Miyamoto X-Patchwork-Id: 458790 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=-18.9 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, 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 2D411C4743D for ; Fri, 11 Jun 2021 04:03:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 041FF6135C for ; Fri, 11 Jun 2021 04:03:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231615AbhFKEF1 (ORCPT ); Fri, 11 Jun 2021 00:05:27 -0400 Received: from mail-pf1-f179.google.com ([209.85.210.179]:36650 "EHLO mail-pf1-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231600AbhFKEF1 (ORCPT ); Fri, 11 Jun 2021 00:05:27 -0400 Received: by mail-pf1-f179.google.com with SMTP id c12so3379932pfl.3 for ; Thu, 10 Jun 2021 21:03:19 -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=14tRWP95MvRyDR2xGdaAtK3vhQBCp92E5g6fXW2EjCA=; b=eHXwoJ79HlOWrMmfhR2c8lRCNXtkCS9V+2WwC0vqpEIfXtRTuVXFPPdnjAoNT29msY zX6RtQ8XuDbLRmMpRPG8Lckc0ASi6H+2I+Yc3Ktk32fZJ+7ftzfDrWeORRptrAdPKNt7 NCnYnceOYCNidgxXN5a7UWuTFwmGyKo/5X1v0= 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=14tRWP95MvRyDR2xGdaAtK3vhQBCp92E5g6fXW2EjCA=; b=RFimF9aQqZkHf1Z+/PwR3j5NR6kZ3ghAbrKv7KNUEm9Mt9elVA0lzB3o4FXsgYNBx4 z1D+EkFHzyYJsHkm1CGZ+9bIju8WuO+Oomw0JLq6U9u5t+wen/LiZ/4OP31GRvBUREfC UVbD7bjWWiXnzQHEBpb7nJVzVXW4u2sTUWGzfOuoZiKiIZ+uTk2RiEyByXWc49ygZz4E yZBn/DGFwZvkx0DTcSSiklmcigO+/32kvIrKzviI408bjGq9pmygvLQ3GcvFvqDze/a5 MUk0g/+8IFuEgSw9eQ0XrO3Wtt1QYVrVD+PU23splO5/kukUtXmINqHnLU2SDrRhng/n 2bXw== X-Gm-Message-State: AOAM530CRZWJPrrtFkDGK6ubjCufobvJyqb5QH6sGd4Dw+fL/UYkg2Kd BDvbL3r6oCV6Ngf+v37m/hy+ug== X-Google-Smtp-Source: ABdhPJyUr7z/1J+gcl1i6CL2nNrUDRA0ntBY6Rioo+/Lrl1/dgFUbmH5RIiSh5uZcPcD9FfTJFSsMw== X-Received: by 2002:a63:dd48:: with SMTP id g8mr1618116pgj.102.1623384139015; Thu, 10 Jun 2021 21:02:19 -0700 (PDT) Received: from localhost ([2401:fa00:9:14:db52:e918:e5f9:9e14]) by smtp.gmail.com with UTF8SMTPSA id u9sm3867172pgp.90.2021.06.10.21.02.14 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 10 Jun 2021 21:02:18 -0700 (PDT) From: Eizan Miyamoto To: linux-kernel@vger.kernel.org Cc: houlong.wei@mediatek.com, enric.balletbo@collabora.com, yong.wu@mediatek.com, chunkuang.hu@kernel.org, Eizan Miyamoto , Andrew-CT Chen , 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 v2 2/8] mtk-mdp: use pm_runtime in MDP component driver Date: Fri, 11 Jun 2021 14:01:39 +1000 Message-Id: <20210611140124.v2.2.I909f5375d930f5d0cc877128e30e2a67078b674c@changeid> X-Mailer: git-send-email 2.32.0.272.g935e593368-goog In-Reply-To: <20210611040145.2085329-1-eizan@chromium.org> References: <20210611040145.2085329-1-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 --- (no changes since v1) drivers/media/platform/mtk-mdp/mtk_mdp_comp.c | 21 ++++++++++++++----- 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(+), 11 deletions(-) diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_comp.c b/drivers/media/platform/mtk-mdp/mtk_mdp_comp.c index aced0029b7cd..8cebc3565826 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 +53,26 @@ 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, - "failed to enable clock, err %d. i:%d\n", - err, i); + 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 +81,8 @@ 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 +92,7 @@ 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 +103,7 @@ 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 +121,7 @@ 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)