From patchwork Fri May 3 21:33:12 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Doug Anderson X-Patchwork-Id: 13653475 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 058CCC4345F for ; Fri, 3 May 2024 21:37:42 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2D15A112A0B; Fri, 3 May 2024 21:37:41 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (1024-bit key; unprotected) header.d=chromium.org header.i=@chromium.org header.b="bfGi0nrd"; dkim-atps=neutral Received: from mail-pl1-f171.google.com (mail-pl1-f171.google.com [209.85.214.171]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2C95F112A0B for ; Fri, 3 May 2024 21:37:40 +0000 (UTC) Received: by mail-pl1-f171.google.com with SMTP id d9443c01a7336-1ecc23e6c9dso730405ad.2 for ; Fri, 03 May 2024 14:37:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1714772258; x=1715377058; 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=/OkjbvX0C1irAjMh4DggDyOVbw/aLDxkOK/5mqNSwoE=; b=bfGi0nrd79gvKM2yHEVQX5lF2C+C5bgI1jFjZqd84MQytRuU9iLKrVYLTNK7Rt5tCO 9uY2fq4Es2MOHmGi+ijioiHiwDrwQC0HdHZlC9om11nCbQaa/u2pPCjjCCs2xOPUmQsF 18tVTI95AF5JAMYlRlpAsTfklJ8yhmn70+fNw= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1714772258; x=1715377058; 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=/OkjbvX0C1irAjMh4DggDyOVbw/aLDxkOK/5mqNSwoE=; b=QjRcPflmGOojgocuYeHdneY8a85Js38kGPm3JtJ2a782kU5sCJKtx55k2oSk8uZ6Di OqepGsrytuozMhnabXQ4i7YJLM9/4lUN8GRp12AVIaDhvDhrzscJhtp5i54/2KrOP6uH PQd78kAeVsToIB8y69pT9gW8ae6QiDVvUhBSuIe/z4Om7w8OP+qxX0fX04vnf1cPQgud vyRLK4oIxPEY3EPwX5HBsPm7OfyMF4J7HxO+r22DIM5NggkgsmztWhQjhtNe+nUpJelF cWH4AUJeUbeY4YC9Kz5NC2PJIX2GmO98T4nu3afT512sNSlmU6AHqpFxvDes1nSV2aoP 69xQ== X-Gm-Message-State: AOJu0YzDmxqJDgqRJcg5pc39NVvyB6DQdr4i+lKfeDbV5LiLziRJrQin Sr5L4SElLE22DxLxThw2TTmhXtJcIkZmKJ7naFSfhYR4bPU6qqcchEV6SNj480Y8g8wBX72F97K 6Lg== X-Google-Smtp-Source: AGHT+IGYHi4nDiwk/CzlytVTK20zaPGarGSgcOiG/MYrHHmtbd3gAzexe8vp7KqG0wrEiuiufOiKDQ== X-Received: by 2002:a17:903:1108:b0:1e5:5bd7:e2b7 with SMTP id n8-20020a170903110800b001e55bd7e2b7mr3948148plh.34.1714772258578; Fri, 03 May 2024 14:37:38 -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.43.2024.05.03.14.37.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 May 2024 14:37:38 -0700 (PDT) From: Douglas Anderson To: dri-devel@lists.freedesktop.org, Maxime Ripard Cc: Linus Walleij , Chris Morgan , Yuran Pereira , Neil Armstrong , Douglas Anderson , =?utf-8?q?Heiko_St=C3=BCbner?= , Daniel Vetter , David Airlie , Jessica Zhang , Maarten Lankhorst , Sam Ravnborg , Thomas Zimmermann , linux-kernel@vger.kernel.org Subject: [RFT PATCH v2 31/48] drm/panel: xinpeng-xpp055c272: Don't call unprepare+disable at shutdown/remove Date: Fri, 3 May 2024 14:33:12 -0700 Message-ID: <20240503143327.RFT.v2.31.Ib97e67a9877070698afbec4f8ede091b2bf89a1f@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 Rockchip boards. The Rockchip 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 Cc: "Heiko Stübner" Signed-off-by: Douglas Anderson Reviewed-by: Heiko Stuebner --- Changes in v2: - Only handle 1 panel per patch. - Split removal of prepared/enabled from handling of remove/shutdown. .../gpu/drm/panel/panel-xinpeng-xpp055c272.c | 17 ----------------- 1 file changed, 17 deletions(-) diff --git a/drivers/gpu/drm/panel/panel-xinpeng-xpp055c272.c b/drivers/gpu/drm/panel/panel-xinpeng-xpp055c272.c index 8262c00670cf..22a14006765e 100644 --- a/drivers/gpu/drm/panel/panel-xinpeng-xpp055c272.c +++ b/drivers/gpu/drm/panel/panel-xinpeng-xpp055c272.c @@ -306,27 +306,11 @@ static int xpp055c272_probe(struct mipi_dsi_device *dsi) return 0; } -static void xpp055c272_shutdown(struct mipi_dsi_device *dsi) -{ - struct xpp055c272 *ctx = mipi_dsi_get_drvdata(dsi); - int ret; - - ret = drm_panel_unprepare(&ctx->panel); - if (ret < 0) - dev_err(&dsi->dev, "Failed to unprepare panel: %d\n", ret); - - ret = drm_panel_disable(&ctx->panel); - if (ret < 0) - dev_err(&dsi->dev, "Failed to disable panel: %d\n", ret); -} - static void xpp055c272_remove(struct mipi_dsi_device *dsi) { struct xpp055c272 *ctx = mipi_dsi_get_drvdata(dsi); int ret; - xpp055c272_shutdown(dsi); - ret = mipi_dsi_detach(dsi); if (ret < 0) dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret); @@ -347,7 +331,6 @@ static struct mipi_dsi_driver xpp055c272_driver = { }, .probe = xpp055c272_probe, .remove = xpp055c272_remove, - .shutdown = xpp055c272_shutdown, }; module_mipi_dsi_driver(xpp055c272_driver);