From patchwork Fri May 3 21:33:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Douglas Anderson X-Patchwork-Id: 13653469 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id BAB28C25B5C for ; Fri, 3 May 2024 21:37:25 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9C8AB11329E; Fri, 3 May 2024 21:37:24 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (1024-bit key; unprotected) header.d=chromium.org header.i=@chromium.org header.b="hH8S4p13"; dkim-atps=neutral Received: from mail-pl1-f172.google.com (mail-pl1-f172.google.com [209.85.214.172]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1C53D11329E for ; Fri, 3 May 2024 21:37:24 +0000 (UTC) Received: by mail-pl1-f172.google.com with SMTP id d9443c01a7336-1ec69e3dbe5so1226175ad.0 for ; Fri, 03 May 2024 14:37:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1714772242; x=1715377042; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=HRQb/I07011T3t9lbY5bJjPOFJ2fx1sx6agjLTdJWzE=; b=hH8S4p13+Dn4V9sfyMDsVrglGLUJQPwcrHqpseImtf/83hQxNVDtrZ1JhmL658m3kc UDgEcVz1QTHTV7/s0vxl0o1ny3g9Xx0ih+NKC4fQZYtcgBT8EsXSvzE+rxx09TubIQgb LViGg5ApkJWu5jd6WbnOSX/Fgsc8BjGzJJ644= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1714772242; x=1715377042; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=HRQb/I07011T3t9lbY5bJjPOFJ2fx1sx6agjLTdJWzE=; b=Owpgg3aDHtyl1RiwWRxYUWA8CmJLnd93gbY1QBLK2rJk3kmUdVT9C48tT86+g/VMbV OA6tzHOiPE2J/AhV+k+zkTNPz1sliAFGujtNmhN1f3YAEFW2BTKpyO0I1XPoV5jd/e9c Gfs52VfHllVGrVQOqq+5buTsAIxsU5vsRmQdnwnaaxcgYd7aNN8qtE1ucnY5OIbmU1sb 8PL9gKPN6F6zyyEyoZl4u2if8B4pBDRi9YsCruM/KFSLnN+kGCJrh+7yE2bSS976Q5Uq hIs8p+UK5+aHM033lVD+Ku+dbH3NbFOfSQVZSzqvNuE5GO/itNFgBCWHHocEEHvPeI2j fe7Q== X-Gm-Message-State: AOJu0Yz9zqEjbRyVLgBrJPf71fhfGbYRFU4Mprsu2poUQq6elJGmcLWc MxKuZYtsv9U0e3tVO8TuRehpmITQawic96+5SaeauFBBKvX9CacbQlfLpbt6eqvGCun7pnmGdMQ 3hw== X-Google-Smtp-Source: AGHT+IF6CDvqfSrYxn7iKNnjnE2VAXasLzRdp4BnWV2DoDu3VKywSCP3Ny+zWphkbKiYpV8TR9pS2g== X-Received: by 2002:a17:902:cec7:b0:1e2:817b:460a with SMTP id d7-20020a170902cec700b001e2817b460amr4432991plg.34.1714772242613; Fri, 03 May 2024 14:37:22 -0700 (PDT) Received: from dianders.sjc.corp.google.com ([2620:15c:9d:2:fb6a:b54b:7580:64f3]) by smtp.gmail.com with ESMTPSA id j12-20020a170903024c00b001eb51a46f5bsm3729134plh.43.2024.05.03.14.37.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 May 2024 14:37:21 -0700 (PDT) From: Douglas Anderson To: dri-devel@lists.freedesktop.org, Maxime Ripard Cc: Linus Walleij , Chris Morgan , Yuran Pereira , Neil Armstrong , Douglas Anderson , Daniel Vetter , David Airlie , Jessica Zhang , Maarten Lankhorst , Sam Ravnborg , Thomas Zimmermann , linux-kernel@vger.kernel.org Subject: [RFT PATCH v2 25/48] drm/panel: samsung-atna33xc20: Don't call unprepare+disable at shutdown/remove Date: Fri, 3 May 2024 14:33:06 -0700 Message-ID: <20240503143327.RFT.v2.25.Iaeacccf98e6cb729b8fc3a782725769cd66812ad@changeid> X-Mailer: git-send-email 2.45.0.rc1.225.g2a3ae87e7f-goog In-Reply-To: <20240503213441.177109-1-dianders@chromium.org> References: <20240503213441.177109-1-dianders@chromium.org> MIME-Version: 1.0 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: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" It's the responsibility of a correctly written DRM modeset driver to call drm_atomic_helper_shutdown() at shutdown time and that should be disabling / unpreparing the panel if needed. Panel drivers shouldn't be calling these functions themselves. A recent effort was made to fix as many DRM modeset drivers as possible [1] [2] [3] and most drivers are fixed now. A grep through mainline for compatible strings used by this driver indicates that it is used by Qualcomm boards. The Qualcomm driver appears to be correctly calling drm_atomic_helper_shutdown() so we can remove the calls. [1] https://lore.kernel.org/r/20230901234015.566018-1-dianders@chromium.org [2] https://lore.kernel.org/r/20230901234202.566951-1-dianders@chromium.org [3] https://lore.kernel.org/r/20230921192749.1542462-1-dianders@chromium.org Signed-off-by: Douglas Anderson --- Changes in v2: - Only handle 1 panel per patch. - Split removal of prepared/enabled from handling of remove/shutdown. drivers/gpu/drm/panel/panel-samsung-atna33xc20.c | 12 ------------ 1 file changed, 12 deletions(-) diff --git a/drivers/gpu/drm/panel/panel-samsung-atna33xc20.c b/drivers/gpu/drm/panel/panel-samsung-atna33xc20.c index a322dd0a532f..9a482a744b8c 100644 --- a/drivers/gpu/drm/panel/panel-samsung-atna33xc20.c +++ b/drivers/gpu/drm/panel/panel-samsung-atna33xc20.c @@ -327,21 +327,10 @@ static void atana33xc20_remove(struct dp_aux_ep_device *aux_ep) struct atana33xc20_panel *panel = dev_get_drvdata(dev); drm_panel_remove(&panel->base); - drm_panel_disable(&panel->base); - drm_panel_unprepare(&panel->base); drm_edid_free(panel->drm_edid); } -static void atana33xc20_shutdown(struct dp_aux_ep_device *aux_ep) -{ - struct device *dev = &aux_ep->dev; - struct atana33xc20_panel *panel = dev_get_drvdata(dev); - - drm_panel_disable(&panel->base); - drm_panel_unprepare(&panel->base); -} - static const struct of_device_id atana33xc20_dt_match[] = { { .compatible = "samsung,atna33xc20", }, { /* sentinal */ } @@ -362,7 +351,6 @@ static struct dp_aux_ep_driver atana33xc20_driver = { }, .probe = atana33xc20_probe, .remove = atana33xc20_remove, - .shutdown = atana33xc20_shutdown, }; static int __init atana33xc20_init(void)