From patchwork Mon Nov 3 19:05:26 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Soren Brinkmann X-Patchwork-Id: 5219291 Return-Path: X-Original-To: patchwork-linux-sh@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id B1FBE9F349 for ; Mon, 3 Nov 2014 19:08:03 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id CBBD42012F for ; Mon, 3 Nov 2014 19:08:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EE18320127 for ; Mon, 3 Nov 2014 19:08:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753482AbaKCTGG (ORCPT ); Mon, 3 Nov 2014 14:06:06 -0500 Received: from mail-qc0-f177.google.com ([209.85.216.177]:41965 "EHLO mail-qc0-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753400AbaKCTGD (ORCPT ); Mon, 3 Nov 2014 14:06:03 -0500 Received: by mail-qc0-f177.google.com with SMTP id l6so9524029qcy.22 for ; Mon, 03 Nov 2014 11:06:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references; bh=NhH0iIGyBkR/oRoaZmY3NFo3NRx53rPGyUGeeWR9Ct4=; b=zbqO7kQ5rRVy/QD6w7CrWu0Aifgqa87XTIPJErMQ4uj20fAxX6Xp/FhcBFUTmY9YBy 8NG+ojDJYWbTcVGC9hsiYWI+fWSLiUh2rG7qrfv6JLUbxnNo9pDVS+F37w3y3kx/cbG8 3rZtlDz0Jg8gzyDLwtyDsZbF2r9EiwvXpP0iTIfPmXgbAAU/6JQ7kFnVefKMubSfEKo+ Q8KFav/rBO0AIDs7njPqVFSCnRBZp1CBMA0j9l9HPQJYdzVQz76bxWMDz+HzPIw6dhbW Tr6/D1HKWaTcvK+cZHR/4MVv+if5WLLo7rVvXluDUw5vqOWPBzx1Vrw7WeUp8EyK0Euy mpCw== X-Received: by 10.224.11.6 with SMTP id r6mr68305641qar.42.1415041562322; Mon, 03 Nov 2014 11:06:02 -0800 (PST) Received: from localhost ([149.199.62.254]) by mx.google.com with ESMTPSA id k4sm17600273qaf.0.2014.11.03.11.06.00 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Mon, 03 Nov 2014 11:06:01 -0800 (PST) From: Soren Brinkmann To: Linus Walleij Cc: =?UTF-8?q?S=C3=B6ren=20Brinkmann?= , Michal Simek , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Alessandro Rubini , Heiko Stuebner , Laurent Pinchart , linux-rockchip@lists.infradead.org, linux-sh@vger.kernel.org Subject: [PATCH 2/7] pinctrl: pinconf-generic: Infer map type from DT property Date: Mon, 3 Nov 2014 11:05:26 -0800 Message-Id: <1415041531-15520-3-git-send-email-soren.brinkmann@xilinx.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1415041531-15520-1-git-send-email-soren.brinkmann@xilinx.com> References: <1415041531-15520-1-git-send-email-soren.brinkmann@xilinx.com> Sender: linux-sh-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org X-Spam-Status: No, score=-7.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,RP_MATCHES_RCVD,T_DKIM_INVALID,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 With the new 'groups' property, the DT parser can infer the map type from the fact whether 'pins' or 'groups' is used to specify the pin group to work on. To maintain backwards compatibitliy with current usage of the DT binding, this is only done when an invalid map type is passed to the parsing function. Signed-off-by: Soren Brinkmann --- Changes since RFC v2: - none --- drivers/pinctrl/pinconf-generic.c | 17 ++++++++++++++--- include/linux/pinctrl/pinconf-generic.h | 7 +++++++ 2 files changed, 21 insertions(+), 3 deletions(-) diff --git a/drivers/pinctrl/pinconf-generic.c b/drivers/pinctrl/pinconf-generic.c index f78b416d7984..1e782a0d6e48 100644 --- a/drivers/pinctrl/pinconf-generic.c +++ b/drivers/pinctrl/pinconf-generic.c @@ -264,6 +264,7 @@ int pinconf_generic_dt_subnode_to_map(struct pinctrl_dev *pctldev, unsigned reserve; struct property *prop; const char *group; + const char *dt_pin_specifier = "pins"; ret = of_property_read_string(np, "function", &function); if (ret < 0) { @@ -284,10 +285,20 @@ int pinconf_generic_dt_subnode_to_map(struct pinctrl_dev *pctldev, reserve++; if (num_configs) reserve++; + ret = of_property_count_strings(np, "pins"); if (ret < 0) { - dev_err(dev, "could not parse property pins\n"); - goto exit; + ret = of_property_count_strings(np, "groups"); + if (ret < 0) { + dev_err(dev, "could not parse property pins/groups\n"); + goto exit; + } + if (type == PIN_MAP_TYPE_INVALID) + type = PIN_MAP_TYPE_CONFIGS_GROUP; + dt_pin_specifier = "groups"; + } else { + if (type == PIN_MAP_TYPE_INVALID) + type = PIN_MAP_TYPE_CONFIGS_PIN; } reserve *= ret; @@ -296,7 +307,7 @@ int pinconf_generic_dt_subnode_to_map(struct pinctrl_dev *pctldev, if (ret < 0) goto exit; - of_property_for_each_string(np, "pins", prop, group) { + of_property_for_each_string(np, dt_pin_specifier, prop, group) { if (function) { ret = pinctrl_utils_add_map_mux(pctldev, map, reserved_maps, num_maps, group, diff --git a/include/linux/pinctrl/pinconf-generic.h b/include/linux/pinctrl/pinconf-generic.h index d578a60eff23..b6dedfbfce69 100644 --- a/include/linux/pinctrl/pinconf-generic.h +++ b/include/linux/pinctrl/pinconf-generic.h @@ -174,6 +174,13 @@ static inline int pinconf_generic_dt_node_to_map_pin( PIN_MAP_TYPE_CONFIGS_PIN); } +static inline int pinconf_generic_dt_node_to_map_all( + struct pinctrl_dev *pctldev, struct device_node *np_config, + struct pinctrl_map **map, unsigned *num_maps) +{ + return pinconf_generic_dt_node_to_map(pctldev, np_config, map, num_maps, + PIN_MAP_TYPE_INVALID); +} #endif #endif /* CONFIG_GENERIC_PINCONF */