Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751498AbbEZSyj (ORCPT ); Tue, 26 May 2015 14:54:39 -0400 Received: from mail-out.m-online.net ([212.18.0.10]:43965 "EHLO mail-out.m-online.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751106AbbEZSyi (ORCPT ); Tue, 26 May 2015 14:54:38 -0400 Date: Tue, 26 May 2015 20:54:25 +0200 From: Andreas Werner To: linux-kernel@vger.kernel.org Subject: regmap different register size Message-ID: <20150526185425.GA26217@wernerandy.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 838 Lines: 21 Hi, i have a question regarding regmap usage. I have a i2c multifunction device which does have a register and value width of 8bits except the revision register. The revision can only be read by a i2c block transfer. Does it makes sense to read the Revision once by the i2c API and let the rest of the device read/write by regmap? Regmap should reduce code but in this case i had to check the i2c block functionality first then read the revisoin and then init the regmap stuff. May be in this case it would be better to use the i2c only instead of mixing i2c API and regmap. Regards Andy -- 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/