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 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 A6320C4332F for ; Thu, 2 Nov 2023 07:03:28 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C388F10E818; Thu, 2 Nov 2023 07:03:27 +0000 (UTC) Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4D8B410E818 for ; Thu, 2 Nov 2023 07:03:25 +0000 (UTC) Received: from [192.168.88.20] (91-158-149-209.elisa-laajakaista.fi [91.158.149.209]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 3B35D667; Thu, 2 Nov 2023 08:03:06 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1698908586; bh=HZ8msN1BvaFhEALTqjIIw5jqjAWnZJH+1ZNrUHXHoY4=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=h5/2w5z8uNVNhClSWl6Zbj5n8asTQwuKVkvtj2NVFXUABi3W/mwurNqjOwqiHh9t3 ml9eDTTRBdlR+Qxn1UVe6VqpmE5hAZrq6YDV42xSFFLr8nQxwgnw7vzp1FlUtHljt/ U8mXhlZmEWfg9nEN4VW5ey6Wu5FzJwRSbLM65MPw= Message-ID: Date: Thu, 2 Nov 2023 09:03:20 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 08/10] drm/tidss: Add dispc_is_idle() Content-Language: en-US To: Laurent Pinchart References: <20231101-tidss-probe-v1-0-45149e0f9415@ideasonboard.com> <20231101-tidss-probe-v1-8-45149e0f9415@ideasonboard.com> <20231101143231.GX12764@pendragon.ideasonboard.com> From: Tomi Valkeinen Autocrypt: addr=tomi.valkeinen@ideasonboard.com; keydata= xsFNBE6ms0cBEACyizowecZqXfMZtnBniOieTuFdErHAUyxVgtmr0f5ZfIi9Z4l+uUN4Zdw2 wCEZjx3o0Z34diXBaMRJ3rAk9yB90UJAnLtb8A97Oq64DskLF81GCYB2P1i0qrG7UjpASgCA Ru0lVvxsWyIwSfoYoLrazbT1wkWRs8YBkkXQFfL7Mn3ZMoGPcpfwYH9O7bV1NslbmyJzRCMO eYV258gjCcwYlrkyIratlHCek4GrwV8Z9NQcjD5iLzrONjfafrWPwj6yn2RlL0mQEwt1lOvn LnI7QRtB3zxA3yB+FLsT1hx0va6xCHpX3QO2gBsyHCyVafFMrg3c/7IIWkDLngJxFgz6DLiA G4ld1QK/jsYqfP2GIMH1mFdjY+iagG4DqOsjip479HCWAptpNxSOCL6z3qxCU8MCz8iNOtZk DYXQWVscM5qgYSn+fmMM2qN+eoWlnCGVURZZLDjg387S2E1jT/dNTOsM/IqQj+ZROUZuRcF7 0RTtuU5q1HnbRNwy+23xeoSGuwmLQ2UsUk7Q5CnrjYfiPo3wHze8avK95JBoSd+WIRmV3uoO rXCoYOIRlDhg9XJTrbnQ3Ot5zOa0Y9c4IpyAlut6mDtxtKXr4+8OzjSVFww7tIwadTK3wDQv Bus4jxHjS6dz1g2ypT65qnHen6mUUH63lhzewqO9peAHJ0SLrQARAQABzTBUb21pIFZhbGtl aW5lbiA8dG9taS52YWxrZWluZW5AaWRlYXNvbmJvYXJkLmNvbT7CwY4EEwEIADgWIQTEOAw+ ll79gQef86f6PaqMvJYe9QUCX/HruAIbAwULCQgHAgYVCgkICwIEFgIDAQIeAQIXgAAKCRD6 PaqMvJYe9WmFD/99NGoD5lBJhlFDHMZvO+Op8vCwnIRZdTsyrtGl72rVh9xRfcSgYPZUvBuT VDxE53mY9HaZyu1eGMccYRBaTLJSfCXl/g317CrMNdY0k40b9YeIX10feiRYEWoDIPQ3tMmA 0nHDygzcnuPiPT68JYZ6tUOvAt7r6OX/litM+m2/E9mtp8xCoWOo/kYO4mOAIoMNvLB8vufi uBB4e/AvAjtny4ScuNV5c5q8MkfNIiOyag9QCiQ/JfoAqzXRjVb4VZG72AKaElwipiKCWEcU R4+Bu5Qbaxj7Cd36M/bI54OrbWWETJkVVSV1i0tghCd6HHyquTdFl7wYcz6cL1hn/6byVnD+ sR3BLvSBHYp8WSwv0TCuf6tLiNgHAO1hWiQ1pOoXyMEsxZlgPXT+wb4dbNVunckwqFjGxRbl Rz7apFT/ZRwbazEzEzNyrBOfB55xdipG/2+SmFn0oMFqFOBEszXLQVslh64lI0CMJm2OYYe3 PxHqYaztyeXsx13Bfnq9+bUynAQ4uW1P5DJ3OIRZWKmbQd/Me3Fq6TU57LsvwRgE0Le9PFQs dcP2071rMTpqTUteEgODJS4VDf4lXJfY91u32BJkiqM7/62Cqatcz5UWWHq5xeF03MIUTqdE qHWk3RJEoWHWQRzQfcx6Fn2fDAUKhAddvoopfcjAHfpAWJ+ENc7BTQROprNHARAAx0aat8GU hsusCLc4MIxOQwidecCTRc9Dz/7U2goUwhw2O5j9TPqLtp57VITmHILnvZf6q3QAho2QMQyE DDvHubrdtEoqaaSKxKkFie1uhWNNvXPhwkKLYieyL9m2JdU+b88HaDnpzdyTTR4uH7wk0bBa KbTSgIFDDe5lXInypewPO30TmYNkFSexnnM3n1PBCqiJXsJahE4ZQ+WnV5FbPUj8T2zXS2xk 0LZ0+DwKmZ0ZDovvdEWRWrz3UzJ8DLHb7blPpGhmqj3ANXQXC7mb9qJ6J/VSl61GbxIO2Dwb xPNkHk8fwnxlUBCOyBti/uD2uSTgKHNdabhVm2dgFNVuS1y3bBHbI/qjC3J7rWE0WiaHWEqy UVPk8rsph4rqITsj2RiY70vEW0SKePrChvET7D8P1UPqmveBNNtSS7In+DdZ5kUqLV7rJnM9 /4cwy+uZUt8cuCZlcA5u8IsBCNJudxEqBG10GHg1B6h1RZIz9Q9XfiBdaqa5+CjyFs8ua01c 9HmyfkuhXG2OLjfQuK+Ygd56mV3lq0aFdwbaX16DG22c6flkkBSjyWXYepFtHz9KsBS0DaZb 4IkLmZwEXpZcIOQjQ71fqlpiXkXSIaQ6YMEs8WjBbpP81h7QxWIfWtp+VnwNGc6nq5IQDESH mvQcsFS7d3eGVI6eyjCFdcAO8eMAEQEAAcLBXwQYAQIACQUCTqazRwIbDAAKCRD6PaqMvJYe 9fA7EACS6exUedsBKmt4pT7nqXBcRsqm6YzT6DeCM8PWMTeaVGHiR4TnNFiT3otD5UpYQI7S suYxoTdHrrrBzdlKe5rUWpzoZkVK6p0s9OIvGzLT0lrb0HC9iNDWT3JgpYDnk4Z2mFi6tTbq xKMtpVFRA6FjviGDRsfkfoURZI51nf2RSAk/A8BEDDZ7lgJHskYoklSpwyrXhkp9FHGMaYII m9EKuUTX9JPDG2FTthCBrdsgWYPdJQvM+zscq09vFMQ9Fykbx5N8z/oFEUy3ACyPqW2oyfvU CH5WDpWBG0s5BALp1gBJPytIAd/pY/5ZdNoi0Cx3+Z7jaBFEyYJdWy1hGddpkgnMjyOfLI7B CFrdecTZbR5upjNSDvQ7RG85SnpYJTIin+SAUazAeA2nS6gTZzumgtdw8XmVXZwdBfF+ICof 92UkbYcYNbzWO/GHgsNT1WnM4sa9lwCSWH8Fw1o/3bX1VVPEsnESOfxkNdu+gAF5S6+I6n3a ueeIlwJl5CpT5l8RpoZXEOVtXYn8zzOJ7oGZYINRV9Pf8qKGLf3Dft7zKBP832I3PQjeok7F yjt+9S+KgSFSHP3Pa4E7lsSdWhSlHYNdG/czhoUkSCN09C0rEK93wxACx3vtxPLjXu6RptBw 3dRq7n+mQChEB1am0BueV1JZaBboIL0AGlSJkm23kw== In-Reply-To: <20231101143231.GX12764@pendragon.ideasonboard.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit 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: , Cc: Aradhya Bhatia , Devarsh Thakkar , linux-kernel@vger.kernel.org, Maxime Ripard , dri-devel@lists.freedesktop.org, Thomas Zimmermann , Jyri Sarha Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On 01/11/2023 16:32, Laurent Pinchart wrote: > Hi Tomi, > > Thank you for the patch. > > On Wed, Nov 01, 2023 at 11:17:45AM +0200, Tomi Valkeinen wrote: >> Add a helper function, dispc_is_idle(), which returns whether the DSS is >> idle (i.e. is any video port enabled). >> >> For now we add a call to it in the suspend and resume callbacks, and >> print a warning if in either place the DSS is not idle. > > Could you please explain here why these checks are needed/useful ? Why > would the dispc not be idle ? I'll drop this. This was mostly a debugging aid for myself when testing runtime PM. Tomi 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 793C1C4332F for ; Thu, 2 Nov 2023 07:03:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233576AbjKBHDe (ORCPT ); Thu, 2 Nov 2023 03:03:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47674 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231876AbjKBHDb (ORCPT ); Thu, 2 Nov 2023 03:03:31 -0400 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [IPv6:2001:4b98:dc2:55:216:3eff:fef7:d647]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9746A12F for ; Thu, 2 Nov 2023 00:03:25 -0700 (PDT) Received: from [192.168.88.20] (91-158-149-209.elisa-laajakaista.fi [91.158.149.209]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 3B35D667; Thu, 2 Nov 2023 08:03:06 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1698908586; bh=HZ8msN1BvaFhEALTqjIIw5jqjAWnZJH+1ZNrUHXHoY4=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=h5/2w5z8uNVNhClSWl6Zbj5n8asTQwuKVkvtj2NVFXUABi3W/mwurNqjOwqiHh9t3 ml9eDTTRBdlR+Qxn1UVe6VqpmE5hAZrq6YDV42xSFFLr8nQxwgnw7vzp1FlUtHljt/ U8mXhlZmEWfg9nEN4VW5ey6Wu5FzJwRSbLM65MPw= Message-ID: Date: Thu, 2 Nov 2023 09:03:20 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 08/10] drm/tidss: Add dispc_is_idle() Content-Language: en-US To: Laurent Pinchart Cc: Aradhya Bhatia , Devarsh Thakkar , Jyri Sarha , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org References: <20231101-tidss-probe-v1-0-45149e0f9415@ideasonboard.com> <20231101-tidss-probe-v1-8-45149e0f9415@ideasonboard.com> <20231101143231.GX12764@pendragon.ideasonboard.com> From: Tomi Valkeinen Autocrypt: addr=tomi.valkeinen@ideasonboard.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/11/2023 16:32, Laurent Pinchart wrote: > Hi Tomi, > > Thank you for the patch. > > On Wed, Nov 01, 2023 at 11:17:45AM +0200, Tomi Valkeinen wrote: >> Add a helper function, dispc_is_idle(), which returns whether the DSS is >> idle (i.e. is any video port enabled). >> >> For now we add a call to it in the suspend and resume callbacks, and >> print a warning if in either place the DSS is not idle. > > Could you please explain here why these checks are needed/useful ? Why > would the dispc not be idle ? I'll drop this. This was mostly a debugging aid for myself when testing runtime PM. Tomi