From nobody Tue Feb 10 00:57:43 2026 Received: from relay2-d.mail.gandi.net (relay2-d.mail.gandi.net [217.70.183.194]) (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 B7CA12D3A6A; Tue, 29 Apr 2025 14:08:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.194 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745935718; cv=none; b=ki+kHQnpTvpaQ1xsZesw8/1CLAwULrboC2LUXEPlUE4tz6FUIycZKM/M+jOedWG63YAVXzSQKchRhwrtj/POksLVD+pVA0qpemosjygCizLNnptitSZnblNmct4156SBp7Ecn638sRTyUTQuach9XQ9qRN4uzJ13ZOLc94ExP3Q= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745935718; c=relaxed/simple; bh=CLXN8WvFddWSjPsluPuK8XqiYPk1UR31J74404mnddM=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=GwNlfKv1blwX52J1007v0jVj+SC0npiEFN1Th0sKZj5jx4jihYjuxjOeui0Thapq8XD03ZxrJcCPrGqXVjnmDFqeCSaVbUCuXiqQ9mrP/LUJCvm4ZOTNzymZCVbGiAUhmNe3ty3pk5SsAFJXNz4YkmxcTknYb644hN/Ncas1CHg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=gzNwQmmO; arc=none smtp.client-ip=217.70.183.194 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="gzNwQmmO" Received: by mail.gandi.net (Postfix) with ESMTPSA id B83ED438AD; Tue, 29 Apr 2025 14:08:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1745935714; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=7XtTmzoo2Mnt3fPlCoSOQdnvYtOkdpYsj02VuG46fnw=; b=gzNwQmmOXrLZ/6gQgIdP5hgoTZksQwE871CJaOwE9IJolWamrlhj3w/9byoAH6n+cgNexc CNUHYI9V/0OuG7OZuo6bpoDWt3/zaG5MKImSM3S4aqJ9IYiCtIkH0UZpyLPiFR2tP3zDfy zf2gs2UR5r6re6213hyN4hYRQvEPlT9NQcoOYT+nrDk6PUtr/E1JV0d81CaOuiaHoTMbWO 6pnGJYlmIOt+sKLntaL09Qazt7MpMxW/IXwC6CY4kv+/KT/AvZmsWOz8z8f9DOwMaSHm2M JjHGATo+deCzy2yiyBULUpJZ5GgTnDr+VuykLUwxhJBJjV6rOBNEWHSqZhF4UQ== From: Thomas Richard Date: Tue, 29 Apr 2025 16:08:24 +0200 Subject: [PATCH v4 10/12] gpio: aggregator: add possibility to attach data to the forwarder Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250429-aaeon-up-board-pinctrl-support-v4-10-b3fffc11417d@bootlin.com> References: <20250429-aaeon-up-board-pinctrl-support-v4-0-b3fffc11417d@bootlin.com> In-Reply-To: <20250429-aaeon-up-board-pinctrl-support-v4-0-b3fffc11417d@bootlin.com> To: Linus Walleij , Andy Shevchenko , Bartosz Golaszewski , Geert Uytterhoeven , Kees Cook , Andy Shevchenko Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, thomas.petazzoni@bootlin.com, DanieleCleri@aaeon.eu, GaryWang@aaeon.com.tw, linux-hardening@vger.kernel.org, Thomas Richard X-Mailer: b4 0.14.1 X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeefvddrtddtgddvieegtddvucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuifetpfffkfdpucggtfgfnhhsuhgsshgtrhhisggvnecuuegrihhlohhuthemuceftddunecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhfffugggtgffkfhgjvfevofesthejredtredtjeenucfhrhhomhepvfhhohhmrghsucftihgthhgrrhguuceothhhohhmrghsrdhrihgthhgrrhgusegsohhothhlihhnrdgtohhmqeenucggtffrrghtthgvrhhnpeektdehvdeiteehtdelteffheduveelgeelvdetgedvueejgefhhfekgefgfeduveenucfkphepvdgrtddumegtsgdugeemheehieemjegrtddtmegutgekudemrggrugdtmehfuggtrgemtggtudgrnecuvehluhhsthgvrhfuihiivgepleenucfrrghrrghmpehinhgvthepvdgrtddumegtsgdugeemheehieemjegrtddtmegutgekudemrggrugdtmehfuggtrgemtggtudgrpdhhvghloheplgduvdejrddtrddurddungdpmhgrihhlfhhrohhmpehthhhomhgrshdrrhhitghhrghrugessghoohhtlhhinhdrtghomhdpnhgspghrtghpthhtohepudefpdhrtghpthhtoheplhhinhhugidqhhgrrhguvghnihhnghesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehlihhnuhhsrdifrghllhgvihhjsehlihhnrghrohdrohhrghdprhgtphhtthhopegrnhguhieskhgvrhhnvghlrdhorhhgp dhrtghpthhtohepkhgvvghssehkvghrnhgvlhdrohhrghdprhgtphhtthhopehgvggvrhhtodhrvghnvghsrghssehglhhiuggvrhdrsggvpdhrtghpthhtohepffgrnhhivghlvgevlhgvrhhisegrrggvohhnrdgvuhdprhgtphhtthhopegrnhgurhhihidrshhhvghvtghhvghnkhhosehlihhnuhigrdhinhhtvghlrdgtohhmpdhrtghpthhtohepthhhohhmrghsrdhpvghtrgiiiihonhhisegsohhothhlihhnrdgtohhm X-GND-Sasl: thomas.richard@bootlin.com Add a data pointer to store private data in the forwarder. Signed-off-by: Thomas Richard Reviewed-by: Andy Shevchenko --- drivers/gpio/gpio-aggregator.c | 20 ++++++++++++++++++-- include/linux/gpio/forwarder.h | 4 +++- 2 files changed, 21 insertions(+), 3 deletions(-) diff --git a/drivers/gpio/gpio-aggregator.c b/drivers/gpio/gpio-aggregator.c index 230bd8398119..1a6483fc817c 100644 --- a/drivers/gpio/gpio-aggregator.c +++ b/drivers/gpio/gpio-aggregator.c @@ -268,6 +268,7 @@ struct gpiochip_fwd { spinlock_t slock; /* protects tmp[] if !can_sleep */ }; struct gpiochip_fwd_timing *delay_timings; + void *data; unsigned long *valid_mask; unsigned long tmp[]; /* values and descs for multiple ops */ }; @@ -289,6 +290,18 @@ struct gpio_chip *gpio_fwd_get_gpiochip(struct gpiochi= p_fwd *fwd) } EXPORT_SYMBOL_NS_GPL(gpio_fwd_get_gpiochip, "GPIO_FORWARDER"); =20 +/** + * gpio_fwd_get_data - Get data for the GPIO forwarder + * @fwd: GPIO forwarder + * + * Returns: The data for the GPIO forwarder + */ +void *gpio_fwd_get_data(struct gpiochip_fwd *fwd) +{ + return fwd->data; +} +EXPORT_SYMBOL_NS_GPL(gpio_fwd_get_data, "GPIO_FORWARDER"); + /** * gpio_fwd_request - Request a line of the GPIO forwarder * @chip: GPIO chip in the forwarder @@ -716,10 +729,11 @@ EXPORT_SYMBOL_NS_GPL(gpio_fwd_gpio_free, "GPIO_FORWAR= DER"); /** * gpio_fwd_register - Register a GPIO forwarder * @fwd: GPIO forwarder + * @data: driver-private data associated with this forwarder * * Returns: 0 on success, or negative errno on failure. */ -int gpio_fwd_register(struct gpiochip_fwd *fwd) +int gpio_fwd_register(struct gpiochip_fwd *fwd, void *data) { struct gpio_chip *chip =3D &fwd->chip; =20 @@ -735,6 +749,8 @@ int gpio_fwd_register(struct gpiochip_fwd *fwd) else spin_lock_init(&fwd->slock); =20 + fwd->data =3D data; + return devm_gpiochip_add_data(chip->parent, chip, fwd); } EXPORT_SYMBOL_NS_GPL(gpio_fwd_register, "GPIO_FORWARDER"); @@ -779,7 +795,7 @@ static struct gpiochip_fwd *gpio_fwd_create(struct devi= ce *dev, return ERR_PTR(error); } =20 - error =3D gpio_fwd_register(fwd); + error =3D gpio_fwd_register(fwd, NULL); if (error) return ERR_PTR(error); =20 diff --git a/include/linux/gpio/forwarder.h b/include/linux/gpio/forwarder.h index f0deb7573f36..9bb62a1a6224 100644 --- a/include/linux/gpio/forwarder.h +++ b/include/linux/gpio/forwarder.h @@ -12,6 +12,8 @@ struct gpiochip_fwd; =20 struct gpio_chip *gpio_fwd_get_gpiochip(struct gpiochip_fwd *fwd); =20 +void *gpio_fwd_get_data(struct gpiochip_fwd *fwd); + int gpio_fwd_request(struct gpio_chip *chip, unsigned int offset); =20 int gpio_fwd_get_direction(struct gpio_chip *chip, unsigned int offset); @@ -44,6 +46,6 @@ int gpio_fwd_gpio_add(struct gpiochip_fwd *fwd, =20 void gpio_fwd_gpio_free(struct gpiochip_fwd *fwd, unsigned int offset); =20 -int gpio_fwd_register(struct gpiochip_fwd *fwd); +int gpio_fwd_register(struct gpiochip_fwd *fwd, void *data); =20 #endif --=20 2.39.5