From patchwork Wed Jun 5 00:23:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Doug Anderson X-Patchwork-Id: 13686048 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 A6584C25B78 for ; Wed, 5 Jun 2024 00:25:11 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2FD9210E644; Wed, 5 Jun 2024 00:25:10 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (1024-bit key; unprotected) header.d=chromium.org header.i=@chromium.org header.b="MpA8hVG3"; dkim-atps=neutral Received: from mail-pl1-f182.google.com (mail-pl1-f182.google.com [209.85.214.182]) by gabe.freedesktop.org (Postfix) with ESMTPS id 106ED10E650 for ; Wed, 5 Jun 2024 00:24:59 +0000 (UTC) Received: by mail-pl1-f182.google.com with SMTP id d9443c01a7336-1f480624d0fso46314695ad.1 for ; Tue, 04 Jun 2024 17:24:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1717547098; x=1718151898; 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=HPVmtOP7OzClmuYgtUVqnYcO82gUWMj5hZYUvdlHA1M=; b=MpA8hVG3WZOkxrv0X2hsNapX2yydmn5zzjtR9Uglr6MiRZ3sMpPmJFdu99N+ephgXR Nd4wGX94/dAylH9rnwK055YRRTe3HQ4EJInzpIyJhDBdeajkUe8ZhVX8K6GY1KvfwgDG ABevY3SM+axX+N+i2G7YJqbWkXeaKPrRwoMsQ= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1717547098; x=1718151898; 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=HPVmtOP7OzClmuYgtUVqnYcO82gUWMj5hZYUvdlHA1M=; b=jCX8J3mhB6IZEAEWBzGgrF5mV9J5B9M3A29Pn2mt4Plr2cGuexsOzO4+qsELdddDzL dRHqYzEW9/ky9+Dfz6DQn1r5LaKtw5r6KQzGGl+wr0I6W3omvE3JGW+3eN8BbaH/oXAR nJWRbhx3ObVaKq/l0PFH5zp1rmUWWEYOdGOQCASA4Z1r7LDR3VX3PewA9QHUnGt373mj BjKOSzOu08X8q/W6FzNmfSKw/1yeSfB0X4wBKKEkuKlMqktZvfFzmi6nUtu0avOfZUvo dMqgdKeUjweLB5narhhDTfhgmmxzewMzWFYb+ezMD0irnm8qnlrzAwpbPNKMROfnCQ66 2utQ== X-Gm-Message-State: AOJu0YxYPy5H3hPT9XJ8o9R30HZ1RmGyf2X5uakKbWnm6pvDdK+g6F3p UoIkhJBRTHJwluve5MqSBNaceqoEuDJZCtg4iwFMK/5DdBdCH8z2EUdF4ZVjk8HBOgtI/l96L78 = X-Google-Smtp-Source: AGHT+IH67K070V0V8KqyhBHJzGDM8yQfGPIOd6KDxeebE42qN9cRh+u2DvVgSXDxiouyJBsaN27tUw== X-Received: by 2002:a17:902:d2ce:b0:1f6:6939:ad23 with SMTP id d9443c01a7336-1f6a5a1976emr12033745ad.37.1717547097993; Tue, 04 Jun 2024 17:24:57 -0700 (PDT) Received: from dianders.sjc.corp.google.com ([2620:15c:9d:2:3609:ff79:4625:8a71]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1f6323dd862sm89032025ad.147.2024.06.04.17.24.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 04 Jun 2024 17:24:57 -0700 (PDT) From: Douglas Anderson To: dri-devel@lists.freedesktop.org, Maxime Ripard Cc: Linus Walleij , Chris Morgan , Neil Armstrong , Yuran Pereira , Douglas Anderson , Werner Johansson , Dmitry Baryshkov , Daniel Vetter , David Airlie , Jessica Zhang , Maarten Lankhorst , Thomas Zimmermann , linux-kernel@vger.kernel.org Subject: [PATCH v3 20/24] drm/panel: sharp-ls043t1le01: Don't call disable at shutdown/remove Date: Tue, 4 Jun 2024 17:23:06 -0700 Message-ID: <20240604172305.v3.20.I89ee53f7fc2f0806cab318128e5fa927990d830f@changeid> X-Mailer: git-send-email 2.45.1.288.g0e0cd299f1-goog In-Reply-To: <20240605002401.2848541-1-dianders@chromium.org> References: <20240605002401.2848541-1-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 Cc: Werner Johansson Cc: Dmitry Baryshkov Acked-by: Linus Walleij Acked-by: Maxime Ripard Signed-off-by: Douglas Anderson --- (no changes since v2) Changes in v2: - Only handle 1 panel per patch. - Split removal of prepared/enabled from handling of remove/shutdown. drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c | 12 ------------ 1 file changed, 12 deletions(-) diff --git a/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c b/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c index c86337954ad7..729cbb0d8403 100644 --- a/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c +++ b/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c @@ -267,10 +267,6 @@ static void sharp_nt_panel_remove(struct mipi_dsi_device *dsi) struct sharp_nt_panel *sharp_nt = mipi_dsi_get_drvdata(dsi); int ret; - ret = drm_panel_disable(&sharp_nt->base); - if (ret < 0) - dev_err(&dsi->dev, "failed to disable panel: %d\n", ret); - ret = mipi_dsi_detach(dsi); if (ret < 0) dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret); @@ -278,13 +274,6 @@ static void sharp_nt_panel_remove(struct mipi_dsi_device *dsi) sharp_nt_panel_del(sharp_nt); } -static void sharp_nt_panel_shutdown(struct mipi_dsi_device *dsi) -{ - struct sharp_nt_panel *sharp_nt = mipi_dsi_get_drvdata(dsi); - - drm_panel_disable(&sharp_nt->base); -} - static const struct of_device_id sharp_nt_of_match[] = { { .compatible = "sharp,ls043t1le01-qhd", }, { } @@ -298,7 +287,6 @@ static struct mipi_dsi_driver sharp_nt_panel_driver = { }, .probe = sharp_nt_panel_probe, .remove = sharp_nt_panel_remove, - .shutdown = sharp_nt_panel_shutdown, }; module_mipi_dsi_driver(sharp_nt_panel_driver);