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 X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED, USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 49F48C282CB for ; Tue, 5 Feb 2019 09:02:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 139EC2083B for ; Tue, 5 Feb 2019 09:02:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=ffwll.ch header.i=@ffwll.ch header.b="eL5a6aTi" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728350AbfBEJCw (ORCPT ); Tue, 5 Feb 2019 04:02:52 -0500 Received: from mail-ed1-f65.google.com ([209.85.208.65]:46669 "EHLO mail-ed1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725898AbfBEJCv (ORCPT ); Tue, 5 Feb 2019 04:02:51 -0500 Received: by mail-ed1-f65.google.com with SMTP id o10so2147550edt.13 for ; Tue, 05 Feb 2019 01:02:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ffwll.ch; s=google; h=sender:date:from:to:cc:subject:message-id:mail-followup-to :references:mime-version:content-disposition:in-reply-to:user-agent; bh=7fk8V1TihraTHKCkkhXhixPSKwKwuDovNLxVglaKNAM=; b=eL5a6aTiC71IJXJqB5j/Ywpf4j0SvSkblWAAHFVG6TQO5X7Gs6mr5RO7tqQM8Z8RBB W2HCVVVJ30gg/oobA2fe24ZBelpW0wa8jqCD95/Zzg/bX7bJEFhBYaAYp1N1IsPWkZHg 8UgZ43kXmf/kuOtPuLxVJ9KcldBIi3rpNWsx4= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :mail-followup-to:references:mime-version:content-disposition :in-reply-to:user-agent; bh=7fk8V1TihraTHKCkkhXhixPSKwKwuDovNLxVglaKNAM=; b=qKRo5dxwzYNLiMES5sMlkItt2KGe2a7ny9U051wePOwzauQk+jSQF2UlXmOUzTBwOp DH5txtMJFtCCSFEiQxugUM9e1DOMtlNebB/CyivD4jAOO3VCAOY4VMW2PlF9jm9ckKCU D8eGyrQQgy1xKTPBEkvEqby3yQkKVYK6K0GyfuO79hMz6S+V+4gld1hWsuFaZHKqvvko LVY+VbVW4H2Rf34TaaGE7TOS01Z6a7NHmN5I0Yruz+SUdpUzfXU5hjBAI/MXXrE8VxaW rQoEifg/zB7Rn7nEqrTM75ABVl694jed8iNNu3fnhD8Ebl+YFh7Pos7BUca8IhbCDF9x juQw== X-Gm-Message-State: AHQUAubS4qpR38BapRBB6fsOMGUKr2Z1iLTq6lxVAq/FLKp7qaXvoRoX SYhoeMKUCD/48zn5xq0a1+s9EA== X-Google-Smtp-Source: AHgI3IYBoiuLxK9Jf5klA3L+D4rJPoyIFIrhjlBdVObUSjiq5Q8sjtoA/6bPHDAFjdQEC5ymqsAoMw== X-Received: by 2002:a17:906:1350:: with SMTP id x16mr2750156ejb.85.1549357369740; Tue, 05 Feb 2019 01:02:49 -0800 (PST) Received: from phenom.ffwll.local ([2a02:168:569e:0:3106:d637:d723:e855]) by smtp.gmail.com with ESMTPSA id k12sm2898634ejz.4.2019.02.05.01.02.48 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 05 Feb 2019 01:02:48 -0800 (PST) Date: Tue, 5 Feb 2019 10:02:46 +0100 From: Daniel Vetter To: Tom Li Cc: Daniel Vetter , linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Bartlomiej Zolnierkiewicz , Sudip Mukherjee , Teddy Wang Subject: Re: [PATCH 0/8] fbdev: sm712fb: implement 2D acceleration w/ cleanups. Message-ID: <20190205090246.GB3271@phenom.ffwll.local> Mail-Followup-To: Tom Li , linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Bartlomiej Zolnierkiewicz , Sudip Mukherjee , Teddy Wang References: <20190202061648.30374-1-tomli@tomli.me> <20190204092618.GM3271@phenom.ffwll.local> <20190204220650.GA24673@localhost.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190204220650.GA24673@localhost.localdomain> X-Operating-System: Linux phenom 4.19.0-1-amd64 User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Feb 05, 2019 at 06:06:50AM +0800, Tom Li wrote: > > Since you care about this driver, considered converting it to a drm > > display driver? You can still have all the acceleration and stuff, the > > fbdev compat mode in drm is rather flexible. > > -Daniel > > Yes, I know fbdev is now in maintenance-only mode, reimplementing it > on top of DRM is on my roadmap, including rewriting a saner version > of the modesetting code. The current version is beyond repair. I'll > start working on it once I managed to purchase the hardware for testing. > > But currently my objectively is to have something usable during the > transitional period. The major user of the chipset was Yeeloong 8089D > laptop - a choice for many non-x86 and MIPS hobbyists for experimentation. > Getting the current version of the patch merged would solve the immediate > usability issues, and then trying to get some platform drivers merged. > And after completing the preliminary upstreaming process, since then, > can start working on a DRM version of the driver, and possibly eventually > remove the fbdev version of sm712fb entirely. > > The 2D acceleration implementation is strictly no more than 200 lines, > the vast majority of the code insertions are comments and documentation > changes ranting about the known issues of the driver/hardware, nothing > non-trivial is added and I think the changeset is manageable and would > not be a burden for the fbdev maintainers, and I can grarantee that I will > not add any other new features to this driver. Awesome, and I think as a gradual plan this makes tons of sense. Cheers, Daniel -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch