Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752934Ab0HZUvh (ORCPT ); Thu, 26 Aug 2010 16:51:37 -0400 Received: from earthlight.etchedpixels.co.uk ([81.2.110.250]:33779 "EHLO www.etchedpixels.co.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752207Ab0HZUvf (ORCPT ); Thu, 26 Aug 2010 16:51:35 -0400 Date: Thu, 26 Aug 2010 22:07:47 +0100 From: Alan Cox To: David Brownell Cc: Anton Vorontsov , Andrew Morton , Samuel Ortiz , Mark Brown , David Brownell , linux-kernel@vger.kernel.org Subject: Re: [PATCH] gpio: Add generic driver for simple memory mapped controllers Message-ID: <20100826220747.6da28e97@lxorguk.ukuu.org.uk> In-Reply-To: <216397.86259.qm@web180306.mail.gq1.yahoo.com> References: <20100826174822.75094415@lxorguk.ukuu.org.uk> <216397.86259.qm@web180306.mail.gq1.yahoo.com> X-Mailer: Claws Mail 3.7.6 (GTK+ 2.18.9; x86_64-redhat-linux-gnu) Face: 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 Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1322 Lines: 29 O> If there are "zillions" that suggests the HW > engineers have version/naming issues just like > certain software engineers. Only goes to show > how close Verilog and VHDL are to software! :) Verilog ? Its far far more primitive than that. You'll find exactly that arrangement in prehistoric 8bit micro support chips - eg the 6522. In fact the only reason I can see for not using it on primitive 8bit micro devices is that they *already* had more features. > are not reusing a named module; they are at best > just copying/pasting some Verilog/VHDL and adding > ASIC/SoC/.../FPGA-specific hacks. (Which calls into > question just how much assurance there can be that > one driver will work reliably for all instances... No they are implementing trivial common sense logic. It's a bit like complaining we have multiple drivers that use addition. I think you need a reality check. Its a VLSI undergraduate project level device, or was back when they taught undergraduates a sampling of chip design by drawing the transistors. This is "my first logic design" stuff. Alan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/