From patchwork Fri May 3 21:32:56 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Doug Anderson X-Patchwork-Id: 13653459 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 5D0B4C4345F for ; Fri, 3 May 2024 21:37:04 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 991A3113292; Fri, 3 May 2024 21:37:03 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (1024-bit key; unprotected) header.d=chromium.org header.i=@chromium.org header.b="mPl40IRE"; dkim-atps=neutral Received: from mail-pl1-f173.google.com (mail-pl1-f173.google.com [209.85.214.173]) by gabe.freedesktop.org (Postfix) with ESMTPS id 67108113291 for ; Fri, 3 May 2024 21:37:02 +0000 (UTC) Received: by mail-pl1-f173.google.com with SMTP id d9443c01a7336-1e3c3aa8938so872975ad.1 for ; Fri, 03 May 2024 14:37:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1714772221; x=1715377021; 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=8Y9nTdENQ7Wsy544i8JrWRgyMyQ3M74fjSP7BIF4QEI=; b=mPl40IREgw212F0pttDsQ7pppB7txT2UhAAU3OgGWP8SGzrlJeDvSUQ3Jtc48rVtaX PJVQO4ZFJK2oMH80y0TjMIuq3FGH3mfeJeMaGWgDAvQAedrjQa4v/6F3GtNxzy/pQvFV SWM4HAqV+Kv6GxSQyOjB9p0AUVGu4LS/+7eJ0= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1714772221; x=1715377021; 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=8Y9nTdENQ7Wsy544i8JrWRgyMyQ3M74fjSP7BIF4QEI=; b=XlM2rqwzhYFWfbO6CxvIPz2qWKKjEMZNpUt3EQqx2e3q30cGJP5iVK1Ufs6fSfurKS /kFU6Jiwk4CiTN8amP/80oshTGP4gXkfw+FkjkolbGeG8hD8BlayQWqvYx/r4hkZMJOB qkrfzboaDxHdHqappaSFDtF96STya7B9NeJ7My7Z9T+5uL2PcpLt3rTVf83xw7B2+iS+ OxMJkMK1z4+mbZ2zwK5zDAwQ9bq83vSutZAca7VXss4Mv/UXIkvUOC4S8yaxwF7CGCR2 1XCdtOeGArmFBDEIkK/+1Jc177ChpRPIHP29Z+goNUbk5WTPSeA/usjULLAladV8D+JM sXlA== X-Gm-Message-State: AOJu0Yw1icwmKTU/omARrsyd3fBwit8P915IHDiifVk1/ZTi/nlSL2LQ Nlx3RrCxDVxd0rE18nDvEZCfBKBqGcjoFzgQeWNpl/LL2CkyzquVO7bPd5hsKHmrraE2+cDA0a+ 5Ag== X-Google-Smtp-Source: AGHT+IG9ldtVTieXA1Mk9918TqXU0GmNr1vS54kcAamhylLrurY6wy29CnNThSUyMLFqb7DbECdGsQ== X-Received: by 2002:a17:902:a60c:b0:1e4:6938:6fe3 with SMTP id u12-20020a170902a60c00b001e469386fe3mr3701239plq.58.1714772220922; Fri, 03 May 2024 14:37:00 -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.43.2024.05.03.14.36.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 May 2024 14:37:00 -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?= , Quentin Schulz , Daniel Vetter , David Airlie , Jessica Zhang , Maarten Lankhorst , Sam Ravnborg , Thomas Zimmermann , linux-kernel@vger.kernel.org Subject: [RFT PATCH v2 15/48] drm/panel: ltk050h3146w: Don't call unprepare+disable at shutdown/remove Date: Fri, 3 May 2024 14:32:56 -0700 Message-ID: <20240503143327.RFT.v2.15.Ibeb2e5692e34b136afe4cf55532f0696ab3f5eed@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. Unfortunately, grepping mainline for this panel's compatible string shows no hits, so we can't be 100% sure if the DRM modeset driver used with this panel has been fixed. If it is found that the DRM modeset driver hasn't been fixed then this patch could be temporarily reverted until it is. [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" Cc: Quentin Schulz Signed-off-by: Douglas Anderson Reviewed-by: Quentin Schulz Tested-by: Quentin Schulz # RK3399 Puma with Tested-by: Quentin Schulz # PX30 Ringneck Tested-by: Heiko Stuebner 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-leadtek-ltk050h3146w.c | 17 ----------------- 1 file changed, 17 deletions(-) diff --git a/drivers/gpu/drm/panel/panel-leadtek-ltk050h3146w.c b/drivers/gpu/drm/panel/panel-leadtek-ltk050h3146w.c index 5894bf30524a..292aa26a456d 100644 --- a/drivers/gpu/drm/panel/panel-leadtek-ltk050h3146w.c +++ b/drivers/gpu/drm/panel/panel-leadtek-ltk050h3146w.c @@ -673,27 +673,11 @@ static int ltk050h3146w_probe(struct mipi_dsi_device *dsi) return 0; } -static void ltk050h3146w_shutdown(struct mipi_dsi_device *dsi) -{ - struct ltk050h3146w *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 ltk050h3146w_remove(struct mipi_dsi_device *dsi) { struct ltk050h3146w *ctx = mipi_dsi_get_drvdata(dsi); int ret; - ltk050h3146w_shutdown(dsi); - ret = mipi_dsi_detach(dsi); if (ret < 0) dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret); @@ -725,7 +709,6 @@ static struct mipi_dsi_driver ltk050h3146w_driver = { }, .probe = ltk050h3146w_probe, .remove = ltk050h3146w_remove, - .shutdown = ltk050h3146w_shutdown, }; module_mipi_dsi_driver(ltk050h3146w_driver);