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[86.58.6.171]) by smtp.gmail.com with ESMTPSA id l20-20020a1709067d5400b00a3e85909a1csm4520555ejp.182.2024.02.22.12.02.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 22 Feb 2024 12:02:54 -0800 (PST) From: Jernej =?utf-8?B?xaBrcmFiZWM=?= To: =?utf-8?B?T25kxZllag==?= Jirman , Maxime Ripard Cc: Chen-Yu Tsai , Maarten Lankhorst , Thomas Zimmermann , David Airlie , Daniel Vetter , Samuel Holland , dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [PATCH 3/3] drm/sun4i: Fix layer zpos change/atomic modesetting Date: Thu, 22 Feb 2024 21:02:53 +0100 Message-ID: <2448947.jE0xQCEvom@jernej-laptop> In-Reply-To: References: <20240216190430.1374132-1-megi@xff.cz> <20240216190430.1374132-4-megi@xff.cz> Precedence: bulk X-Mailing-List: linux-sunxi@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" Dne sreda, 21. februar 2024 ob 14:45:20 CET je Maxime Ripard napisal(a): > Hi, >=20 > On Fri, Feb 16, 2024 at 08:04:26PM +0100, Ond=C5=99ej Jirman wrote: > > From: Ondrej Jirman > >=20 > > Identical configurations of planes can lead to different (and wrong) > > layer -> pipe routing at HW level, depending on the order of atomic > > plane changes. > >=20 > > For example: > >=20 > > - Layer 1 is configured to zpos 0 and thus uses pipe 0. No other layer > > is enabled. This is a typical situation at boot. > >=20 > > - When a compositor takes over and layer 3 is enabled, > > sun8i_ui_layer_enable() will get called with old_zpos=3D0 zpos=3D1, w= hich > > will lead to incorrect disabling of pipe 0 and enabling of pipe 1. > >=20 > > What happens is that sun8i_ui_layer_enable() function may disable > > blender pipes even if it is no longer assigned to its layer. > >=20 > > To correct this, move the routing setup out of individual plane's > > atomic_update into crtc's atomic_update, where it can be calculated > > and updated all at once. > >=20 > > Remove the atomic_disable callback because it is no longer needed. > >=20 > > Signed-off-by: Ondrej Jirman >=20 > I don't have enough knowledge about the mixers code to comment on your > patch, so I'll let Jernej review it. However, this feels to me like the > pipe assignment is typically the sort of things that should be dealt > with device-wide, and in atomic_check. In DE2 and DE3.0, you cannot move planes between mixers (crtcs), because ea= ch one is hardwired to specific mixer. Movable planes are the feature of DE3.3 and one of the pain points for upstreaming the code. Anyway, this commit on= ly addresses current issue of enabling and disabling planes and handling zpos. In atomic check you can only precalculate final register values, but I don't see any benefit doing that. I think that this code elegantly solves current issue of enabling or disabling wrong plane in certain situations, so: Reviewed-by: Jernej Skrabec Note, if there is new revision, please rewrite blender regmap_update_bits() to regmap_write(). Since there is HW issue with reads, I would like to get rid of regmap_update_bits() calls eventually. Best regards, Jernej >=20 > If I'm talking non-sense, it would be great to mention at least why that > can't be an option in the commit log. >=20 > Maxime >=20 From mboxrd@z Thu Jan 1 00:00:00 1970 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 69DEDC48BF8 for ; Thu, 22 Feb 2024 20:03:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=QJPM4ijnKcJtTf156yLVN3J8r288US4f6oLtumeZkmA=; b=tiZ41cgpS0HQJW Kil9+qfmo9k4wCS3kX7ovyF10eETUvRaRSbRm390SCZfkRwrjZzL/WEYawchp5CN9gSQ78t0lvGor z7oENHpjRqrxR737pgWTLSLFQTRsraypdh3w7jBHzqSfGfn+8q/ZRuNkdg7Ez/0C/pG+jDy6lz6X7 dW+0VMeCJGBkGcOENn8fXLRUpuMf1hrIlvqrlJSIreR4eINYTNBsPFbRyBEPm7g2UQBYzs+SmA+ZD 3vphZYadtPhYqkxi+++yUOWvHM5hCS6M8C+Gtx1YBRSTbfTo6pNg+CJCnJ2pftdataVsPnF5Af6tv u/8cE1f93/E0pQN3nBkg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rdFHY-00000006QpS-2pgd; Thu, 22 Feb 2024 20:03:00 +0000 Received: from mail-ej1-x632.google.com ([2a00:1450:4864:20::632]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rdFHV-00000006Qoh-0ZMf for linux-arm-kernel@lists.infradead.org; Thu, 22 Feb 2024 20:02:58 +0000 Received: by mail-ej1-x632.google.com with SMTP id a640c23a62f3a-a3f5808b0dfso15349866b.1 for ; Thu, 22 Feb 2024 12:02:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1708632175; x=1709236975; darn=lists.infradead.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=D91+NNYRuFeok9CBgQ7kElLom/IZjF4ZNUVGAGFMcWc=; b=TXqiR8jZARWT+uLVde0gRb1y7f1iJRLMP6flh34wm8KyUUDFJP4h/K153SoHRUJAZp 7CT26MWpueFsF3QDq8iAp4Jb9lVRBhDKwn2xN6Jo2AhD4t33wyVkv4JNp6NFDr0H3+6I LDrZV3BdwoyYcFWnxFUoaR09I89yJiDO0W9PEVKMSDblMtROS97rD+XOLPSon0BK9Gsn Lkf9tDUu68n+l7wwJfVLAZAzmhgcnRAO5BGvMiyqfQpI9IbHg3P9iO66cq5uDyti0dU7 UP+D4GIIbXXr7uR9pBFu9efqNO5rWVOqGxVqmiZeAZ3Z2mgoF7AwHfmybbTzw1KmJNR0 C1Qg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1708632175; x=1709236975; 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=D91+NNYRuFeok9CBgQ7kElLom/IZjF4ZNUVGAGFMcWc=; b=ZanntRIZnjkkRIwlEdIOCkoz542rK7BxKmlOwx3GfTKeW710YsolQAmEat98DP2zmR ZEuSx1lJJJDCo9TGBOH1YBX96zhIwsZOZ+DG+hiMwv0jMzgxd3yMIluPj9UYcKof+lAl B75FKcDY83L+MMqP1VB1ySndBy5P+cktiuv4Qu9N3EIf955CGAoxO9DA+BDsUVTyMmrf rJAvo646iSLKjRGAX+Ey6p7tCoMqJT6StAGFho87xI6mbr/+Is5vCrG0DuBqHUPql/Wo /aEB4i1Kbptt8g3YzW3l6dDCK3C7HEs0CSxHe7PAp3Q92zH75ziPiGwsINOQr9y3/UEF nE8g== X-Forwarded-Encrypted: i=1; AJvYcCVKbh6UPBwgAoB/vc3wmoE7Vvgc0i83kS+B724a/1/ldjborm34R9DzxIwbSCtFBM37OzIUHKTyVWtb1CfJXv6wgUGuugRkgwUUOP5FnmbRQVXUR4A= X-Gm-Message-State: AOJu0YwRMoBcvLw0ccqBPnEcgo2CsnSF+Q3Pc7mD9JeA/JCTYRxUxnom wD6X91QJzUa6/7v8EmwUjcGVn9g6RwtABy3q631D92prayr8eX0P X-Google-Smtp-Source: AGHT+IEgvTKQkasQRFEm9qA5fvN8XNPWdx6hB/jSsMaHVhviWIDzjakARe/kyNDcFAl7qhoDmu/LtA== X-Received: by 2002:a17:906:b106:b0:a3e:e869:a151 with SMTP id u6-20020a170906b10600b00a3ee869a151mr5856787ejy.45.1708632174997; Thu, 22 Feb 2024 12:02:54 -0800 (PST) Received: from jernej-laptop.localnet (86-58-6-171.dynamic.telemach.net. [86.58.6.171]) by smtp.gmail.com with ESMTPSA id l20-20020a1709067d5400b00a3e85909a1csm4520555ejp.182.2024.02.22.12.02.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 22 Feb 2024 12:02:54 -0800 (PST) From: Jernej =?utf-8?B?xaBrcmFiZWM=?= To: =?utf-8?B?T25kxZllag==?= Jirman , Maxime Ripard Cc: Chen-Yu Tsai , Maarten Lankhorst , Thomas Zimmermann , David Airlie , Daniel Vetter , Samuel Holland , dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [PATCH 3/3] drm/sun4i: Fix layer zpos change/atomic modesetting Date: Thu, 22 Feb 2024 21:02:53 +0100 Message-ID: <2448947.jE0xQCEvom@jernej-laptop> In-Reply-To: References: <20240216190430.1374132-1-megi@xff.cz> <20240216190430.1374132-4-megi@xff.cz> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240222_120257_197137_1F7D625A X-CRM114-Status: GOOD ( 25.80 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org RG5lIHNyZWRhLCAyMS4gZmVicnVhciAyMDI0IG9iIDE0OjQ1OjIwIENFVCBqZSBNYXhpbWUgUmlw YXJkIG5hcGlzYWwoYSk6Cj4gSGksCj4gCj4gT24gRnJpLCBGZWIgMTYsIDIwMjQgYXQgMDg6MDQ6 MjZQTSArMDEwMCwgT25kxZllaiBKaXJtYW4gd3JvdGU6Cj4gPiBGcm9tOiBPbmRyZWogSmlybWFu IDxtZWdpQHhmZi5jej4KPiA+IAo+ID4gSWRlbnRpY2FsIGNvbmZpZ3VyYXRpb25zIG9mIHBsYW5l cyBjYW4gbGVhZCB0byBkaWZmZXJlbnQgKGFuZCB3cm9uZykKPiA+IGxheWVyIC0+IHBpcGUgcm91 dGluZyBhdCBIVyBsZXZlbCwgZGVwZW5kaW5nIG9uIHRoZSBvcmRlciBvZiBhdG9taWMKPiA+IHBs YW5lIGNoYW5nZXMuCj4gPiAKPiA+IEZvciBleGFtcGxlOgo+ID4gCj4gPiAtIExheWVyIDEgaXMg Y29uZmlndXJlZCB0byB6cG9zIDAgYW5kIHRodXMgdXNlcyBwaXBlIDAuIE5vIG90aGVyIGxheWVy Cj4gPiAgIGlzIGVuYWJsZWQuIFRoaXMgaXMgYSB0eXBpY2FsIHNpdHVhdGlvbiBhdCBib290Lgo+ ID4gCj4gPiAtIFdoZW4gYSBjb21wb3NpdG9yIHRha2VzIG92ZXIgYW5kIGxheWVyIDMgaXMgZW5h YmxlZCwKPiA+ICAgc3VuOGlfdWlfbGF5ZXJfZW5hYmxlKCkgd2lsbCBnZXQgY2FsbGVkIHdpdGgg b2xkX3pwb3M9MCB6cG9zPTEsIHdoaWNoCj4gPiAgIHdpbGwgbGVhZCB0byBpbmNvcnJlY3QgZGlz YWJsaW5nIG9mIHBpcGUgMCBhbmQgZW5hYmxpbmcgb2YgcGlwZSAxLgo+ID4gCj4gPiBXaGF0IGhh cHBlbnMgaXMgdGhhdCBzdW44aV91aV9sYXllcl9lbmFibGUoKSBmdW5jdGlvbiBtYXkgZGlzYWJs ZQo+ID4gYmxlbmRlciBwaXBlcyBldmVuIGlmIGl0IGlzIG5vIGxvbmdlciBhc3NpZ25lZCB0byBp dHMgbGF5ZXIuCj4gPiAKPiA+IFRvIGNvcnJlY3QgdGhpcywgbW92ZSB0aGUgcm91dGluZyBzZXR1 cCBvdXQgb2YgaW5kaXZpZHVhbCBwbGFuZSdzCj4gPiBhdG9taWNfdXBkYXRlIGludG8gY3J0Yydz IGF0b21pY191cGRhdGUsIHdoZXJlIGl0IGNhbiBiZSBjYWxjdWxhdGVkCj4gPiBhbmQgdXBkYXRl ZCBhbGwgYXQgb25jZS4KPiA+IAo+ID4gUmVtb3ZlIHRoZSBhdG9taWNfZGlzYWJsZSBjYWxsYmFj ayBiZWNhdXNlIGl0IGlzIG5vIGxvbmdlciBuZWVkZWQuCj4gPiAKPiA+IFNpZ25lZC1vZmYtYnk6 IE9uZHJlaiBKaXJtYW4gPG1lZ2lAeGZmLmN6Pgo+IAo+IEkgZG9uJ3QgaGF2ZSBlbm91Z2gga25v d2xlZGdlIGFib3V0IHRoZSBtaXhlcnMgY29kZSB0byBjb21tZW50IG9uIHlvdXIKPiBwYXRjaCwg c28gSSdsbCBsZXQgSmVybmVqIHJldmlldyBpdC4gSG93ZXZlciwgdGhpcyBmZWVscyB0byBtZSBs aWtlIHRoZQo+IHBpcGUgYXNzaWdubWVudCBpcyB0eXBpY2FsbHkgdGhlIHNvcnQgb2YgdGhpbmdz IHRoYXQgc2hvdWxkIGJlIGRlYWx0Cj4gd2l0aCBkZXZpY2Utd2lkZSwgYW5kIGluIGF0b21pY19j aGVjay4KCkluIERFMiBhbmQgREUzLjAsIHlvdSBjYW5ub3QgbW92ZSBwbGFuZXMgYmV0d2VlbiBt aXhlcnMgKGNydGNzKSwgYmVjYXVzZSBlYWNoCm9uZSBpcyBoYXJkd2lyZWQgdG8gc3BlY2lmaWMg bWl4ZXIuIE1vdmFibGUgcGxhbmVzIGFyZSB0aGUgZmVhdHVyZSBvZiBERTMuMwphbmQgb25lIG9m IHRoZSBwYWluIHBvaW50cyBmb3IgdXBzdHJlYW1pbmcgdGhlIGNvZGUuIEFueXdheSwgdGhpcyBj b21taXQgb25seQphZGRyZXNzZXMgY3VycmVudCBpc3N1ZSBvZiBlbmFibGluZyBhbmQgZGlzYWJs aW5nIHBsYW5lcyBhbmQgaGFuZGxpbmcgenBvcy4KCkluIGF0b21pYyBjaGVjayB5b3UgY2FuIG9u bHkgcHJlY2FsY3VsYXRlIGZpbmFsIHJlZ2lzdGVyIHZhbHVlcywgYnV0IEkgZG9uJ3QKc2VlIGFu eSBiZW5lZml0IGRvaW5nIHRoYXQuIEkgdGhpbmsgdGhhdCB0aGlzIGNvZGUgZWxlZ2FudGx5IHNv bHZlcyBjdXJyZW50Cmlzc3VlIG9mIGVuYWJsaW5nIG9yIGRpc2FibGluZyB3cm9uZyBwbGFuZSBp biBjZXJ0YWluIHNpdHVhdGlvbnMsIHNvOgoKUmV2aWV3ZWQtYnk6IEplcm5laiBTa3JhYmVjIDxq ZXJuZWouc2tyYWJlY0BnbWFpbC5jb20+CgpOb3RlLCBpZiB0aGVyZSBpcyBuZXcgcmV2aXNpb24s IHBsZWFzZSByZXdyaXRlIGJsZW5kZXIgcmVnbWFwX3VwZGF0ZV9iaXRzKCkKdG8gcmVnbWFwX3dy aXRlKCkuIFNpbmNlIHRoZXJlIGlzIEhXIGlzc3VlIHdpdGggcmVhZHMsIEkgd291bGQgbGlrZSB0 bwpnZXQgcmlkIG9mIHJlZ21hcF91cGRhdGVfYml0cygpIGNhbGxzIGV2ZW50dWFsbHkuCgpCZXN0 IHJlZ2FyZHMsCkplcm5lagoKPiAKPiBJZiBJJ20gdGFsa2luZyBub24tc2Vuc2UsIGl0IHdvdWxk IGJlIGdyZWF0IHRvIG1lbnRpb24gYXQgbGVhc3Qgd2h5IHRoYXQKPiBjYW4ndCBiZSBhbiBvcHRp b24gaW4gdGhlIGNvbW1pdCBsb2cuCj4gCj4gTWF4aW1lCj4gCgoKCgoKX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGludXgtYXJtLWtlcm5lbCBtYWlsaW5n IGxpc3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5p bmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtYXJtLWtlcm5lbAo=