From patchwork Fri May 3 21:33:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Douglas Anderson X-Patchwork-Id: 13653467 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 6FAC2C10F16 for ; Fri, 3 May 2024 21:37:21 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7DECB11329B; Fri, 3 May 2024 21:37:20 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (1024-bit key; unprotected) header.d=chromium.org header.i=@chromium.org header.b="MC9Fs8W2"; dkim-atps=neutral Received: from mail-pl1-f178.google.com (mail-pl1-f178.google.com [209.85.214.178]) by gabe.freedesktop.org (Postfix) with ESMTPS id 6123511329B for ; Fri, 3 May 2024 21:37:19 +0000 (UTC) Received: by mail-pl1-f178.google.com with SMTP id d9443c01a7336-1e834159f40so687075ad.2 for ; Fri, 03 May 2024 14:37:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1714772238; x=1715377038; 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=YjHl+DB7wvFQ0erRTiSGp5Vkb60hgkc17VF3W8JYnEQ=; b=MC9Fs8W2cmSAdbwD+K9rNrtvdOVKoBaHusOUIiU+wieqpbdGMwGbhRUi0ftxhVCRKV ibv+z1OjDq7XtjUA1l/jL+mvowxHC2fv0CB7//bCCtoMcZWUTO0SR/yAA15owm9Z2OJC YUk7eaoqEXfzTj54Jp+dm3lSX/yKJNjYjsjeQ= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1714772238; x=1715377038; 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=YjHl+DB7wvFQ0erRTiSGp5Vkb60hgkc17VF3W8JYnEQ=; b=wlqys++/Bd7duXh0jeJ+j0gSzLIvffvcn5RF0REECJEr9fvZnETt69xvq+t1K73X/b lwqzQa+bbBRrA8HMxdxfCZDcOuhPobL+5eDOkpDcfcId0TP1AC/FGk0e+WH7jVEEU9Qw F4SIAHqMnzesjr8g599K/YNgxCT0xSZRWmyz2MqtyNforZWAZp5QlrgFmaDA9Vod4sa6 w4aWCJgs3EzKJw7Q/LfEVsyjDIGGEYARxuxnD7iKtsLPv0+ZC5ZbelWLQFESvSRmmCua qh9ftsGjbNlJeLd1LdsfEqzHVyMWiPMid+77hxpGAsrgxOVrVnjeSKppcOg8GzRrPvud DcUQ== X-Gm-Message-State: AOJu0YxMKXR/3FC8ZdnBpJ1eHrxlL7aFjxrXwaQpZZwvtM9msTRxYI4q MmggLoUhwQ9wpLOKrTV1v9JWg8xLoeVIDP8f1ef+2QuYsxzT92uFPQJgmntgaJRp0QBy4zwboV+ P7Q== X-Google-Smtp-Source: AGHT+IHGkmJTrA+QEdoj0aZR/Y9uwm9CMi5KsoludQGf1jksEPkLR67IdZOHw27LEYo4LBKbqkaXGw== X-Received: by 2002:a17:902:e807:b0:1e5:556:60e2 with SMTP id u7-20020a170902e80700b001e5055660e2mr4570462plg.5.1714772238405; Fri, 03 May 2024 14:37:18 -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.43.2024.05.03.14.37.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 May 2024 14:37:17 -0700 (PDT) From: Douglas Anderson To: dri-devel@lists.freedesktop.org, Maxime Ripard Cc: Linus Walleij , Chris Morgan , Yuran Pereira , Neil Armstrong , Douglas Anderson , Peter Ujfalusi , Daniel Vetter , David Airlie , Jessica Zhang , Maarten Lankhorst , Sam Ravnborg , Thomas Zimmermann , linux-kernel@vger.kernel.org Subject: [RFT PATCH v2 23/48] drm/panel: osd-osd101t2587-53ts: Don't call unprepare+disable at shutdown/remove Date: Fri, 3 May 2024 14:33:04 -0700 Message-ID: <20240503143327.RFT.v2.23.Ic533ce1323b94230d4155f9364c2b7c1bc47e798@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 TI OMAP boards. The OMAP 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: Peter Ujfalusi 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-osd-osd101t2587-53ts.c | 14 -------------- 1 file changed, 14 deletions(-) diff --git a/drivers/gpu/drm/panel/panel-osd-osd101t2587-53ts.c b/drivers/gpu/drm/panel/panel-osd-osd101t2587-53ts.c index c0da7d9512e8..dbea84f51514 100644 --- a/drivers/gpu/drm/panel/panel-osd-osd101t2587-53ts.c +++ b/drivers/gpu/drm/panel/panel-osd-osd101t2587-53ts.c @@ -186,11 +186,6 @@ static void osd101t2587_panel_remove(struct mipi_dsi_device *dsi) struct osd101t2587_panel *osd101t2587 = mipi_dsi_get_drvdata(dsi); int ret; - ret = drm_panel_disable(&osd101t2587->base); - if (ret < 0) - dev_warn(&dsi->dev, "failed to disable panel: %d\n", ret); - - drm_panel_unprepare(&osd101t2587->base); drm_panel_remove(&osd101t2587->base); ret = mipi_dsi_detach(dsi); @@ -198,14 +193,6 @@ static void osd101t2587_panel_remove(struct mipi_dsi_device *dsi) dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret); } -static void osd101t2587_panel_shutdown(struct mipi_dsi_device *dsi) -{ - struct osd101t2587_panel *osd101t2587 = mipi_dsi_get_drvdata(dsi); - - drm_panel_disable(&osd101t2587->base); - drm_panel_unprepare(&osd101t2587->base); -} - static struct mipi_dsi_driver osd101t2587_panel_driver = { .driver = { .name = "panel-osd-osd101t2587-53ts", @@ -213,7 +200,6 @@ static struct mipi_dsi_driver osd101t2587_panel_driver = { }, .probe = osd101t2587_panel_probe, .remove = osd101t2587_panel_remove, - .shutdown = osd101t2587_panel_shutdown, }; module_mipi_dsi_driver(osd101t2587_panel_driver);