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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2B97FC433EF for ; Mon, 1 Nov 2021 10:11:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 10B7160EBC for ; Mon, 1 Nov 2021 10:11:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232237AbhKAKOR (ORCPT ); Mon, 1 Nov 2021 06:14:17 -0400 Received: from outbound5g.eu.mailhop.org ([18.156.67.42]:30238 "EHLO outbound5g.eu.mailhop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232342AbhKAKOG (ORCPT ); Mon, 1 Nov 2021 06:14:06 -0400 X-Greylist: delayed 51395 seconds by postgrey-1.27 at vger.kernel.org; Mon, 01 Nov 2021 06:14:06 EDT ARC-Seal: i=1; a=rsa-sha256; t=1635761490; cv=none; d=outbound.mailhop.org; s=arc-outbound20181012; b=klmD5MAIFeOxUWaub7V7oGxwF9IdhdYny/kwMAogcXvPSdnhP1wIF4p2D8hjEC6ZjVX8Edq28rt2v uzFxB03jJbS5hTFh0+wFT2jS8vaUi3JetfOONCBcQQtnvdIJe81DzH0xnCmayWc1CB9WPLHqZ32Ads m+UnmQIGH7cGQYrauYGpkY1OqJ45ZdJCSUOEvKYnu5vOXxxOiOsNvi1r7Zb0C+hqdgkWiJxuEuXTig y742L28NYFYZXOzjU7G0lcmT/ZSMjz1JzjNaEDD3YpvIIN5QYyEP+GaM7R16k8Uj7pXmIQGQARo0K+ R23krZOD4DtXSfYymaUpuUw9ks434hQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=outbound.mailhop.org; s=arc-outbound20181012; h=content-type:mime-version:message-id:in-reply-to:date:references:subject:cc: to:from:dkim-signature:dkim-signature:from; bh=qo6OKJzPQ3GHXEjx4uWdACygWPEVR6iwuI1csc2XXxY=; b=qcDMnfNaONS+lPowMVqlVo0xk9q9e3lBr9n38nO2gHojeu/+t3e+1yqZ5D5RlIrWsAOs+tc0sTLXz QXpHBoUhHNocqihB35jUaq36kWpEju8ms9dN5KaJaX+rQhZSRZCGjyYR474dbP/5/fs6vqHhAwtJIb LVCo/z1yAKKB4I6ZHJ4LtrYh1xLvhRQdmNTntBGF6jY98s6EqCmvIEvffBEzGOMcPJJ/SuMsOihJSK k0ogFHxcL8FTlqSXUSjF89iFc8itK2td0S/qw+hVAEx5T1+6UJ9S1y1gvtrD4TIGG1idEKcpzJ8DJm buhBC9jlvWk6/UlUwY9ZaVHQTWVCtUg== ARC-Authentication-Results: i=1; outbound2.eu.mailhop.org; spf=pass smtp.mailfrom=stackframe.org smtp.remote-ip=91.207.61.48; dmarc=none header.from=stackframe.org; arc=none header.oldest-pass=0; DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=stackframe.org; s=duo-1634547266507-560c42ae; h=content-type:mime-version:message-id:in-reply-to:date:references:subject:cc: to:from:from; bh=qo6OKJzPQ3GHXEjx4uWdACygWPEVR6iwuI1csc2XXxY=; b=FUvOI540IO8bFt9BR0u1hp24YJbSAx2d9o+YtyF0cu35AXOK855TQD7s5+HC0WABD9XnimaRAa3WV IMv0OnHfpAuOu2rqfVlMVfiL29NdJ9jBgLmsINjn/8oN1NvjzSZp7GWbSpSVvWrP3+CiB5HOFQ2OP3 XU2F83hAD7zhQ4xA= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=outbound.mailhop.org; s=dkim-high; h=content-type:mime-version:message-id:in-reply-to:date:references:subject:cc: to:from:from; bh=qo6OKJzPQ3GHXEjx4uWdACygWPEVR6iwuI1csc2XXxY=; b=ckGeLFW1SVOpGcu9I7un5bAOotVzuRwBmkSJQ/RMHZVtJYGWVO4jXsGA62KduNdIz4Z2hZGDeanyb Pigml/UUhH5x2FAVkWmONRvymDzOzrxoFOt1iVVEfBMX4oiHNw8OGj55CcYtrsOWZc16Cbc0YSavnS waOMwirjrBxqeebtfIAWL5orV67p7fYEcuaHpOZoO315gd0HjBj5u/puJpCgjQTUwfcH2rdZdw8X0I Kw9k8PJf/vTdVhssySNtqZnDCUEV4GlH2cBFMS8a0Pp4Uz1b72o54CppuGdsGUIL5eeCMI/xuF9RIK HjPMxE1n+S/0q1YZj5OKo3tOzYH4BJg== X-Originating-IP: 91.207.61.48 X-MHO-RoutePath: dG9ta2lzdG5lcm51 X-MHO-User: 12a54a57-3afc-11ec-a070-973b52397bcb X-Report-Abuse-To: https://support.duocircle.com/support/solutions/articles/5000540958-duocircle-standard-smtp-abuse-information X-Mail-Handler: DuoCircle Outbound SMTP Received: from mail.duncanthrax.net (propper.duncanthrax.net [91.207.61.48]) by outbound2.eu.mailhop.org (Halon) with ESMTPSA id 12a54a57-3afc-11ec-a070-973b52397bcb; Mon, 01 Nov 2021 10:11:26 +0000 (UTC) Received: from hsi-kbw-109-193-149-228.hsi7.kabel-badenwuerttemberg.de ([109.193.149.228] helo=x1.stackframe.org.stackframe.org) by mail.duncanthrax.net with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1mhUHl-00DInm-DH; Mon, 01 Nov 2021 12:11:25 +0200 From: Sven Schnelle To: Thomas Zimmermann Cc: linux-parisc@vger.kernel.org, linux-fbdev@vger.kernel.org, dri-devel , Helge Deller Subject: Re: [PATCH/RFT] fbdev driver for HP Visualize FX cards References: <20211031195347.13754-1-svens@stackframe.org> <87r1c0s1bt.fsf@x1.stackframe.org> Date: Mon, 01 Nov 2021 11:11:23 +0100 In-Reply-To: (Thomas Zimmermann's message of "Mon, 1 Nov 2021 10:33:12 +0100") Message-ID: <87lf28rxro.fsf@x1.stackframe.org> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org Hi Thomas, Thomas Zimmermann writes: > Am 01.11.21 um 09:54 schrieb Sven Schnelle: >> Thomas Zimmermann writes: >> Thanks, i wasn't aware as i normally don't do any graphics related >> development. I take a look at dri and port the driver, which is >> hopefully not too hard. > > Sounds good. > > The one big difference when converting is that DRM really wants > drivers to support 32-bit XRGB colors. It's not a DRM limitation per > se, but a requirement of today's userspace programs. AFAICS your fbdev > driver uses a 256-color palette format. So the DRM driver would have > to convert > XRGB8888 to 8-bit RGB332 and install a corresponding palette. Right now the driver only supports 8 bit pseudocolor, because i wanted to start with something easy to get the kernel fbcon running. I have no idea (yet) how to switch the card into other color formats. And neither how to do pseudo color with drm. But i'll figure it out i guess. > Don't worry, it's easy. Take a look at the cirrus driver for a simple DRM > driver. [1] Great, i also picked that driver as a template. :-) Thanks for your help and pointers, much appreciated! Sven