From patchwork Thu Jan 27 20:01:37 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephen Boyd X-Patchwork-Id: 12727325 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 347F4C433F5 for ; Thu, 27 Jan 2022 20:03:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343807AbiA0UDl (ORCPT ); Thu, 27 Jan 2022 15:03:41 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43438 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343886AbiA0UCm (ORCPT ); Thu, 27 Jan 2022 15:02:42 -0500 Received: from mail-pg1-x531.google.com (mail-pg1-x531.google.com [IPv6:2607:f8b0:4864:20::531]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 12B84C061760 for ; Thu, 27 Jan 2022 12:02:37 -0800 (PST) Received: by mail-pg1-x531.google.com with SMTP id f8so3223897pgf.8 for ; Thu, 27 Jan 2022 12:02:37 -0800 (PST) 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=ZPdM2UZRVqO2e0C8ICFRT9vqGkS5bJAyu59fLH+Uvcs=; b=Gl4OTjqsqgynBhjQVr0J0vK/Y4lnurULqWtCsHyQOkEHqf7pCYHQI81VfLe0ELPBsG 0SYrju/lR6J6HE43y4rKJGyo6/G5xD8lVQyH6+Ijf/swy2beLa8NcG5FgN9KTJwKHXGo bQsVmN6a58G5hTr/ZwYaIyIU2zcLLGHUCcPIM= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ZPdM2UZRVqO2e0C8ICFRT9vqGkS5bJAyu59fLH+Uvcs=; b=YYIObeUQrjisOOCeFn2h2rVx4NtDhLI/nGxeTBFJ3+WYc6xzinmJ/rs7Sj9CnbcNyb nhz12Dg27911WghB1ZVKMps3QfCyXMz+wD0P8UA0Avw7vIHNJzgXwYFMw5X442UFSQi+ KHlYNd6Hzj/0XvB2AYl5z2YKVZndi23r82wLcqwSKBkaVt3ul4KVVXRbmxiW0ffNRhj/ CGIKjbBsFqBjG2pr4HVBCfEhsJhApSvNmKzNMSYcxVEgCGC8JjwJY4xPqxEtHnZmWr4l 9YIikCMF/ci8bK2TGA/2BNTYEw5dVgaUSKpNtlfZNyyoDARbO1MMSgzoeV1AyzL6qwM1 TBmw== X-Gm-Message-State: AOAM5313KLL2QzBYJdbONhqX+ya6mTTyZ2ouM8tMn6Dp9gGIMMsw12Gx S5sqkTa/MhnQ+04dwhL5unnEwQ== X-Google-Smtp-Source: ABdhPJwB8j2u/cujHRi6C9hFkNiVFW4PLGhDjL/+Uzw5oKliGwBjASBtEEumzc2+wCCT+0M/ofqccg== X-Received: by 2002:a05:6a00:14d1:: with SMTP id w17mr4787164pfu.46.1643313756502; Thu, 27 Jan 2022 12:02:36 -0800 (PST) Received: from smtp.gmail.com ([2620:15c:202:201:9246:1838:3243:3071]) by smtp.gmail.com with ESMTPSA id k21sm6561190pff.33.2022.01.27.12.02.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Jan 2022 12:02:36 -0800 (PST) From: Stephen Boyd To: Greg Kroah-Hartman , Douglas Anderson Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, Orson Zhai , Baolin Wang , Chunyan Zhang , Maarten Lankhorst , Kevin Tang , Daniel Vetter , "Rafael J. Wysocki" , Rob Clark , Russell King , Saravana Kannan Subject: [PATCH v6 31/35] drm/sprd: Migrate to aggregate driver Date: Thu, 27 Jan 2022 12:01:37 -0800 Message-Id: <20220127200141.1295328-32-swboyd@chromium.org> X-Mailer: git-send-email 2.35.0.rc0.227.g00780c9af4-goog In-Reply-To: <20220127200141.1295328-1-swboyd@chromium.org> References: <20220127200141.1295328-1-swboyd@chromium.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Use an aggregate driver instead of component ops so that we can get proper driver probe ordering of the aggregate device with respect to all the component devices that make up the aggregate device. Cc: Orson Zhai Cc: Baolin Wang Cc: Chunyan Zhang Cc: Maarten Lankhorst Cc: Kevin Tang Cc: Daniel Vetter Cc: "Rafael J. Wysocki" Cc: Rob Clark Cc: Russell King Cc: Saravana Kannan Signed-off-by: Stephen Boyd --- drivers/gpu/drm/sprd/sprd_drm.c | 48 +++++++++++++++++++-------------- 1 file changed, 28 insertions(+), 20 deletions(-) diff --git a/drivers/gpu/drm/sprd/sprd_drm.c b/drivers/gpu/drm/sprd/sprd_drm.c index a077e2d4d721..ff39b32b20c0 100644 --- a/drivers/gpu/drm/sprd/sprd_drm.c +++ b/drivers/gpu/drm/sprd/sprd_drm.c @@ -65,8 +65,9 @@ static struct drm_driver sprd_drm_drv = { .minor = DRIVER_MINOR, }; -static int sprd_drm_bind(struct device *dev) +static int sprd_drm_aggregate_probe(struct aggregate_device *adev) { + struct device *dev = aggregate_device_parent(adev); struct platform_device *pdev = to_platform_device(dev); struct drm_device *drm; struct sprd_drm *sprd; @@ -118,8 +119,9 @@ static int sprd_drm_bind(struct device *dev) return ret; } -static void sprd_drm_unbind(struct device *dev) +static void sprd_drm_aggregate_remove(struct aggregate_device *adev) { + struct device *dev = aggregate_device_parent(adev); struct drm_device *drm = dev_get_drvdata(dev); drm_dev_unregister(drm); @@ -129,9 +131,28 @@ static void sprd_drm_unbind(struct device *dev) component_unbind_all(drm->dev, drm); } -static const struct component_master_ops drm_component_ops = { - .bind = sprd_drm_bind, - .unbind = sprd_drm_unbind, +static void sprd_drm_aggregate_shutdown(struct aggregate_device *adev) +{ + struct device *dev = aggregate_device_parent(adev); + struct platform_device *pdev = to_platform_device(dev); + struct drm_device *drm = platform_get_drvdata(pdev); + + if (!drm) { + drm_warn(drm, "drm device is not available, no shutdown\n"); + return; + } + + drm_atomic_helper_shutdown(drm); +} + +static struct aggregate_driver sprd_drm_aggregate_driver = { + .probe = sprd_drm_aggregate_probe, + .remove = sprd_drm_aggregate_remove, + .shutdown = sprd_drm_aggregate_shutdown, + .driver = { + .name = "sprd_drm", + .owner = THIS_MODULE, + }, }; static int compare_of(struct device *dev, void *data) @@ -141,27 +162,15 @@ static int compare_of(struct device *dev, void *data) static int sprd_drm_probe(struct platform_device *pdev) { - return drm_of_component_probe(&pdev->dev, compare_of, &drm_component_ops); + return drm_of_aggregate_probe(&pdev->dev, compare_of, &sprd_drm_aggregate_driver); } static int sprd_drm_remove(struct platform_device *pdev) { - component_master_del(&pdev->dev, &drm_component_ops); + component_aggregate_unregister(&pdev->dev, &sprd_drm_aggregate_driver); return 0; } -static void sprd_drm_shutdown(struct platform_device *pdev) -{ - struct drm_device *drm = platform_get_drvdata(pdev); - - if (!drm) { - drm_warn(drm, "drm device is not available, no shutdown\n"); - return; - } - - drm_atomic_helper_shutdown(drm); -} - static const struct of_device_id drm_match_table[] = { { .compatible = "sprd,display-subsystem", }, { /* sentinel */ }, @@ -171,7 +180,6 @@ MODULE_DEVICE_TABLE(of, drm_match_table); static struct platform_driver sprd_drm_driver = { .probe = sprd_drm_probe, .remove = sprd_drm_remove, - .shutdown = sprd_drm_shutdown, .driver = { .name = "sprd-drm-drv", .of_match_table = drm_match_table,