From patchwork Thu Oct 5 02:58:41 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: AKASHI Takahiro X-Patchwork-Id: 730578 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3E3D5E7AD44 for ; Thu, 5 Oct 2023 16:34:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230440AbjJEQdl (ORCPT ); Thu, 5 Oct 2023 12:33:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46362 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232540AbjJEQck (ORCPT ); Thu, 5 Oct 2023 12:32:40 -0400 Received: from mail-ot1-x336.google.com (mail-ot1-x336.google.com [IPv6:2607:f8b0:4864:20::336]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 48B6B197 for ; Wed, 4 Oct 2023 19:59:31 -0700 (PDT) Received: by mail-ot1-x336.google.com with SMTP id 46e09a7af769-6c7a4735a30so92744a34.1 for ; Wed, 04 Oct 2023 19:59:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1696474770; x=1697079570; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=10JswCDtKjfsgUgjTt05ZkVWjMO4ZebDQWE8d7lo6tc=; b=VKUQsTLhCArnRioaPv2u3UlcoY7e8nqdOs9Fb8algbw+e/Qb7F1MxBH78hSGbgQeN1 TwlbgeZPvk3tZQ7Lq8E6ic5XwdO/8VtzCHs1nfuxFf+Sw7/p8277olzuPDWtgoIFuGNn qHw0a1+iIxDAu2HGCyUgI4HJ8wQkn8ADY4recjFsosL/9dYBfb14a2x3Gk115QhSo2z7 DE9EzsnfoW6uLCk6ubnPJ4tilrCnrOPxFYiD6zYXGZ+kF/Y1eX2AAHjoaQhsnxF0bg3i Sazzd3ecdU00wp6MoWT9BsqGzcmwqGrT+wb5AO1OPrrQPxBu8AyFISFRW2OzSSoc25yl vUuA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1696474770; x=1697079570; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=10JswCDtKjfsgUgjTt05ZkVWjMO4ZebDQWE8d7lo6tc=; b=vVIy/CF4Dl9gXo23g7gel5F3JhbAYWTh5uCP2hG6KS9itWpKU4A/09t2x55miBS7rw 9YHWNUr09wVYYwRVqXjfjcXibDRNEQPg3dbbHIdy09DYPLIIXTNXrxLl4P6lYOzkMFNE 90Euh6kcCFOU72pYo2FVKqii73iu4wY6M4ZeCGdTstgXjjroXM0oVhQq1hEhkAirHJZP /YOWp93+tFY4/bt7bPK+tpRxZgJysCm5COBhPtUiw/JxiQNJQ+k7e4VEhQSF3dZ/WG16 +8aQiQlbNhlbJk2lFTV/Q6F1MrZBth44XRefA6h1z31s29MPH7186YyJv/gd07hS4E1X Ay6Q== X-Gm-Message-State: AOJu0Yy/U0/D1rDJCqanZwJJSFPOkMAB3QE7AGWc638wHkZqRc9TUoVz 1PvAPMl3K5CvUcVDdjhmEp0ABw== X-Google-Smtp-Source: AGHT+IFVHEUYGWZTaKBOTIg0Zt8j6bgzzj5zfngX59+MW1xuz8QaG4UOkQ4Qt1xPSuv/ln7C4yvMeg== X-Received: by 2002:a05:6808:15a8:b0:3ad:f3c0:5da3 with SMTP id t40-20020a05680815a800b003adf3c05da3mr4643158oiw.3.1696474770489; Wed, 04 Oct 2023 19:59:30 -0700 (PDT) Received: from octopus.. ([2400:4050:c3e1:100:a16d:fce2:497:afb7]) by smtp.gmail.com with ESMTPSA id b18-20020a637152000000b005782ad723casm269265pgn.27.2023.10.04.19.59.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Oct 2023 19:59:30 -0700 (PDT) From: AKASHI Takahiro To: sudeep.holla@arm.com, cristian.marussi@arm.com, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, linus.walleij@linaro.org Cc: Oleksii_Moisieiev@epam.com, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, AKASHI Takahiro Subject: [RFC v2 3/5] pinctrl: add pinctrl_gpio_get_config() Date: Thu, 5 Oct 2023 11:58:41 +0900 Message-Id: <20231005025843.508689-4-takahiro.akashi@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231005025843.508689-1-takahiro.akashi@linaro.org> References: <20231005025843.508689-1-takahiro.akashi@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org This is a counterpart of pinctrl_gpio_set_config() which will be used, at least initially, to implement gpio_get interface in pin controller based generic gpio driver. Signed-off-by: AKASHI Takahiro Reviewed-by: Linus Walleij --- RFC (Oct 2, 2023) --- drivers/pinctrl/core.c | 19 +++++++++++++++++++ include/linux/pinctrl/consumer.h | 8 ++++++++ 2 files changed, 27 insertions(+) diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c index e9dc9638120a..2f9c2efdfe0e 100644 --- a/drivers/pinctrl/core.c +++ b/drivers/pinctrl/core.c @@ -926,6 +926,25 @@ int pinctrl_gpio_set_config(unsigned gpio, unsigned long config) } EXPORT_SYMBOL_GPL(pinctrl_gpio_set_config); +int pinctrl_gpio_get_config(unsigned int gpio, unsigned long *config) +{ + struct pinctrl_gpio_range *range; + struct pinctrl_dev *pctldev; + int ret, pin; + + ret = pinctrl_get_device_gpio_range(gpio, &pctldev, &range); + if (ret) + return ret; + + mutex_lock(&pctldev->mutex); + pin = gpio_to_pin(range, gpio); + ret = pin_config_get_for_pin(pctldev, pin, config); + mutex_unlock(&pctldev->mutex); + + return ret; +} +EXPORT_SYMBOL_GPL(pinctrl_gpio_get_config); + static struct pinctrl_state *find_state(struct pinctrl *p, const char *name) { diff --git a/include/linux/pinctrl/consumer.h b/include/linux/pinctrl/consumer.h index 4729d54e8995..852fac97a79b 100644 --- a/include/linux/pinctrl/consumer.h +++ b/include/linux/pinctrl/consumer.h @@ -31,6 +31,8 @@ extern void pinctrl_gpio_free(unsigned gpio); extern int pinctrl_gpio_direction_input(unsigned gpio); extern int pinctrl_gpio_direction_output(unsigned gpio); extern int pinctrl_gpio_set_config(unsigned gpio, unsigned long config); +extern int pinctrl_gpio_get_config(unsigned int gpio, + unsigned long *config); extern struct pinctrl * __must_check pinctrl_get(struct device *dev); extern void pinctrl_put(struct pinctrl *p); @@ -92,6 +94,12 @@ static inline int pinctrl_gpio_set_config(unsigned gpio, unsigned long config) return 0; } +static inline int pinctrl_gpio_get_config(unsigned int gpio, + unsigned long *config) +{ + return 0; +} + static inline struct pinctrl * __must_check pinctrl_get(struct device *dev) { return NULL;