From patchwork Fri Nov 7 13:00:02 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Javier Martinez Canillas X-Patchwork-Id: 5252251 Return-Path: X-Original-To: patchwork-linux-samsung-soc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 39F2AC11AC for ; Fri, 7 Nov 2014 13:01:56 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 58CA620138 for ; Fri, 7 Nov 2014 13:01:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 83D1420131 for ; Fri, 7 Nov 2014 13:01:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752261AbaKGNAa (ORCPT ); Fri, 7 Nov 2014 08:00:30 -0500 Received: from bhuna.collabora.co.uk ([93.93.135.160]:44222 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752244AbaKGNA2 (ORCPT ); Fri, 7 Nov 2014 08:00:28 -0500 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: javier) with ESMTPSA id 4027A600E55 From: Javier Martinez Canillas To: Mark Brown Cc: Kukjin Kim , Chanwoo Choi , Olof Johansson , Chris Zhong , Krzysztof Kozlowski , Abhilash Kesavan , linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Javier Martinez Canillas Subject: [PATCH v5 2/5] regulator: Add function to map modes to struct regulator_desc Date: Fri, 7 Nov 2014 14:00:02 +0100 Message-Id: <1415365205-27630-3-git-send-email-javier.martinez@collabora.co.uk> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1415365205-27630-1-git-send-email-javier.martinez@collabora.co.uk> References: <1415365205-27630-1-git-send-email-javier.martinez@collabora.co.uk> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The "regulator-initial-mode" and "regulator-mode" DT properties allows to configure the regulator operating modes at startup or when a system enters into a susend state. But these properties use as valid values the operating modes supported by each device while the core deals with the standard operating modes. So a mapping function is needed to translate from the hardware specific modes to the standard ones. This mapping is a non-varying configuration for each regulator, so add a function pointer to struct regulator_desc that will allow drivers to define their callback to do the modes translation. Signed-off-by: Javier Martinez Canillas --- Changes in v5: - Add a better explanation of what mode is passed as an argument and what mode is returned. Suggested by Krzysztof Kozlowski. - Explain that this callback is needed to be able to parse the regulator initial and suspend state modes. Suggested by Krzysztof Kozlowski. include/linux/regulator/driver.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index 28da08e..7966650 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -243,6 +243,12 @@ enum regulator_type { * * @enable_time: Time taken for initial enable of regulator (in uS). * @off_on_delay: guard time (in uS), before re-enabling a regulator + * + * @map_modes: Callback invoked to translate from hardware to standard modes. + * The function returns the standard REGULATOR_MODE that maps to + * the hardware specific mode passed as an argument. + * If the callback is not defined, the "regulator-initial-mode" + * and suspend states "regulator-mode" properties won't be parsed. */ struct regulator_desc { const char *name; @@ -285,6 +291,8 @@ struct regulator_desc { unsigned int enable_time; unsigned int off_on_delay; + + unsigned int (*map_modes)(unsigned int mode); }; /**