From patchwork Wed Sep 27 14:29:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 727154 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E3759C8D2 for ; Wed, 27 Sep 2023 14:29:39 +0000 (UTC) Received: from mail-wm1-x32f.google.com (mail-wm1-x32f.google.com [IPv6:2a00:1450:4864:20::32f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E82C3191 for ; Wed, 27 Sep 2023 07:29:37 -0700 (PDT) Received: by mail-wm1-x32f.google.com with SMTP id 5b1f17b1804b1-40572aeb73cso81078645e9.3 for ; Wed, 27 Sep 2023 07:29:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20230601.gappssmtp.com; s=20230601; t=1695824976; x=1696429776; 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=nxu4Stw3TnchTs3E1ZMW4avWovvpHjhxTZTeZz76j+U=; b=2Be4sSYl7+rX2U8AdvQGMmIAmC4om8V069XxAlmXPmjXEBCtwzueVqzfoXra3zy6aj ci08IPZfzwTPTzvqd812mI+67Cde8gIVCAenB5rnD6Zv9we4kfFdpxgwwQ09rSem1sOt gLhE8kku/5CW0g8lzysNmOJqwLujgTFOOOf1TXIgLPbFtl7+TCAjRe1Uy/kzI9pf630p su7eBb+LeqiDJ/GOCPXZTdWmJSGlXFaHcy/UiUOkNGpd8NmhyQIiYYI5zMVIPZRxnpoL fAqfo19tSzlvtxV9qdOgJOIqyY03Ljdp9w0Y0NF+eJDVY+CcwbzGXsgTRxohY1peCrn+ q+xg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1695824976; x=1696429776; 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=nxu4Stw3TnchTs3E1ZMW4avWovvpHjhxTZTeZz76j+U=; b=ZxZqIgX5y8rlVuuvKWwMza+CDOQqgY++eVFoXXCyn5FcSeSNf1rT5KhG9Mi5xVQ0Nf Czb8rsClozcyjTxvk48yX73f2oJ0MJb+8+Wb5A4N7ICqJJ8c9tJWbqAgF4QtnVLsUU8D m0D9RokmYLFL6Lb/iDXY1nJ+FbIMNijKuFY8YRyrfEWf4WQuf43e5eLYFqOdkG2uieK4 ULffk0ru1PtvoZ6qLkAsVLzBZ5qTv5xjsUlOaP1fX1c15pNDRBtw01PUhdvtzS6nw4iM Vup39yoGHFz+CBZ9/o0850p6LL3QjqSM5JPnxaXAwnk/hGGkkfYhsM/2vmFzveX4Fqqb VRcA== X-Gm-Message-State: AOJu0YwAB3bw3OceglHRAJdIdrWi91F3+WSBFhDmRRqHXOpdnnJy4zoO ekDFl8g50As68gLbsC84Or4ICA== X-Google-Smtp-Source: AGHT+IGx1rA0IPvHwPKy+CU4d/O60W9kXir7QNg57WQfvTZGdtZM/kmFP+1VwE6jdeJBKXjUcuY8yw== X-Received: by 2002:a7b:c415:0:b0:405:377f:5417 with SMTP id k21-20020a7bc415000000b00405377f5417mr2073680wmi.39.1695824976201; Wed, 27 Sep 2023 07:29:36 -0700 (PDT) Received: from brgl-uxlite.home ([2a01:cb1d:334:ac00:4bb6:1525:9e22:4a15]) by smtp.gmail.com with ESMTPSA id v2-20020a1cf702000000b003feae747ff2sm20448303wmh.35.2023.09.27.07.29.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 Sep 2023 07:29:35 -0700 (PDT) From: Bartosz Golaszewski To: Linus Walleij , Andy Shevchenko , Mika Westerberg Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH v4 01/11] gpiolib: make gpio_device_get() and gpio_device_put() public Date: Wed, 27 Sep 2023 16:29:21 +0200 Message-Id: <20230927142931.19798-2-brgl@bgdev.pl> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230927142931.19798-1-brgl@bgdev.pl> References: <20230927142931.19798-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net From: Bartosz Golaszewski In order to start migrating away from accessing struct gpio_chip by users other than their owners, let's first make the reference management functions for the opaque struct gpio_device public in the driver.h header. Signed-off-by: Bartosz Golaszewski Reviewed-by: Linus Walleij Reviewed-by: Andy Shevchenko --- drivers/gpio/gpiolib.c | 24 ++++++++++++++++++++++++ drivers/gpio/gpiolib.h | 10 ---------- include/linux/gpio/driver.h | 3 +++ 3 files changed, 27 insertions(+), 10 deletions(-) diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index edffa0d2acaa..f84ad54d8dbd 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -1058,6 +1058,30 @@ static struct gpio_chip *find_chip_by_name(const char *name) return gpiochip_find((void *)name, gpiochip_match_name); } +/** + * gpio_device_get() - Increase the reference count of this GPIO device + * @gdev: GPIO device to increase the refcount for + * + * Returns: + * Pointer to @gdev. + */ +struct gpio_device *gpio_device_get(struct gpio_device *gdev) +{ + return to_gpio_device(get_device(&gdev->dev)); +} +EXPORT_SYMBOL_GPL(gpio_device_get); + +/** + * gpio_device_put() - Decrease the reference count of this GPIO device and + * possibly free all resources associated with it. + * @gdev: GPIO device to decrease the reference count for + */ +void gpio_device_put(struct gpio_device *gdev) +{ + put_device(&gdev->dev); +} +EXPORT_SYMBOL_GPL(gpio_device_put); + #ifdef CONFIG_GPIOLIB_IRQCHIP /* diff --git a/drivers/gpio/gpiolib.h b/drivers/gpio/gpiolib.h index 9bff5c2cf720..3ccacf3c1288 100644 --- a/drivers/gpio/gpiolib.h +++ b/drivers/gpio/gpiolib.h @@ -86,16 +86,6 @@ static inline struct gpio_device *to_gpio_device(struct device *dev) return container_of(dev, struct gpio_device, dev); } -static inline struct gpio_device *gpio_device_get(struct gpio_device *gdev) -{ - return to_gpio_device(get_device(&gdev->dev)); -} - -static inline void gpio_device_put(struct gpio_device *gdev) -{ - put_device(&gdev->dev); -} - /* gpio suffixes used for ACPI and device tree lookup */ static __maybe_unused const char * const gpio_suffixes[] = { "gpios", "gpio" }; diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index 8f0859ba7065..a2060dc3344b 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -606,6 +606,9 @@ int devm_gpiochip_add_data_with_key(struct device *dev, struct gpio_chip *gc, struct gpio_chip *gpiochip_find(void *data, int (*match)(struct gpio_chip *gc, void *data)); +struct gpio_device *gpio_device_get(struct gpio_device *gdev); +void gpio_device_put(struct gpio_device *gdev); + bool gpiochip_line_is_irq(struct gpio_chip *gc, unsigned int offset); int gpiochip_reqres_irq(struct gpio_chip *gc, unsigned int offset); void gpiochip_relres_irq(struct gpio_chip *gc, unsigned int offset);