From patchwork Wed Jun 11 09:00:13 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Richard X-Patchwork-Id: 896354 Received: from relay1-d.mail.gandi.net (relay1-d.mail.gandi.net [217.70.183.193]) (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 00A2A260569; Wed, 11 Jun 2025 09:00:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.193 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749632425; cv=none; b=SsAIBYWcCqlqebKLddYFsNvicSFGjEvpuenU3qy7qHSPpPoA/xtIKG4ETNRMN2028ris4NFSMTt7TEBEF39J8kDxsWrdo54kOn6uWn80NwhShr+hxae50HLl2Hnfk9OWPcRGfyCRM3STtlYfYRLO6bxXO3uUFdow0PSvGoVv4bI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749632425; c=relaxed/simple; bh=OBNeBiI8bRPO9EXjZInloACtWTfqR448bfRYAWFLdNE=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=Qn24tfqggOXX4lAWHecpkO3x6+yVcmtkQSgMbhnCc2UheaeEZAh32wNXFZJUHeoiSttQqYWe7DAMMWXy5935Af/qgKEgLfy8WAyeOMvTd/DiGGcrwzjc9EpCFsfAfADF0Bw6V3JaZYeAyaYn1bt0KP1WZTBZYYE6iCMp/Htn6GY= 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=LeCCPbar; arc=none smtp.client-ip=217.70.183.193 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="LeCCPbar" Received: by mail.gandi.net (Postfix) with ESMTPSA id CCC21439F5; Wed, 11 Jun 2025 09:00:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1749632421; 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=e9j9oK2ljdnWfPxqsLtF6zcelvKnibzsu3HImSSZFt0=; b=LeCCPbarnaiiwbvPlQ6cUyv7hqW2h5JawU96lZlLRCnSfUHpWuc8WV1h0MBeXtZBqKB+Uz +Kpm843ND1Utb69OD8kyYrXnc9GCq2FGqgIS0VRfGxaO6JBw+7+HwfynRqlUNIA2gD0GE9 NFmVlfgZWTL4WEUF7iKmVo3xiYz9yaLavPVB98GYCrCcIOmp3y8oHGTiJW8lXDEU+gPAIu s2CFFKAKqCvmeLWG1JYG2Y3J7gGeMtpU/RF879ZrwkGTMljM6+xhCtS4jEXJF0iia8iCd1 1zqFg6PmrgrKonGeJ26K+geqRIY7o45x56o7T308L0OJ7sxTk4I0VUXg0lMlQQ== From: Thomas Richard Date: Wed, 11 Jun 2025 11:00:13 +0200 Subject: [PATCH v8 08/10] gpio: aggregator: add possibility to attach data to the forwarder Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250611-aaeon-up-board-pinctrl-support-v8-8-3693115599fe@bootlin.com> References: <20250611-aaeon-up-board-pinctrl-support-v8-0-3693115599fe@bootlin.com> In-Reply-To: <20250611-aaeon-up-board-pinctrl-support-v8-0-3693115599fe@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: gggruggvucftvghtrhhoucdtuddrgeeffedrtddugdduudeljecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfitefpfffkpdcuggftfghnshhusghstghrihgsvgenuceurghilhhouhhtmecufedtudenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephfffufggtgfgkfhfjgfvvefosehtjeertdertdejnecuhfhrohhmpefvhhhomhgrshcutfhitghhrghrugcuoehthhhomhgrshdrrhhitghhrghrugessghoohhtlhhinhdrtghomheqnecuggftrfgrthhtvghrnhepkedthedvieethedtleetffehudevleegledvteegvdeujeeghffhkeeggfefudevnecukfhppedvrgdtudemtggsudegmehfgedtmegsfhdttdemfhdtheegmegtlegtvdemvddutgefmeduheeiieenucevlhhushhtvghrufhiiigvpeehnecurfgrrhgrmhepihhnvghtpedvrgdtudemtggsudegmehfgedtmegsfhdttdemfhdtheegmegtlegtvdemvddutgefmeduheeiiedphhgvlhhopegluddvjedrtddruddrudgnpdhmrghilhhfrhhomhepthhhohhmrghsrdhrihgthhgrrhgusegsohhothhlihhnrdgtohhmpdhnsggprhgtphhtthhopedufedprhgtphhtthhopegrnhgurhhihidrshhhvghvtghhvghnkhhosehlihhnuhigrdhinhhtvghlrdgtohhmpdhrtghpthhtoheprghnugihsehkvghrnhgvlhdrohhrghdprhgtphhtthhopehthhhomhgrshdrrhhitghhrghrugessghoohhtlhhinhdrt ghomhdprhgtphhtthhopehlihhnuhigqdhkvghrnhgvlhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehkvggvsheskhgvrhhnvghlrdhorhhgpdhrtghpthhtohepsghrghhlsegsghguvghvrdhplhdprhgtphhtthhopehgvggvrhhtodhrvghnvghsrghssehglhhiuggvrhdrsggvpdhrtghpthhtoheplhhinhhugidqhhgrrhguvghnihhnghesvhhgvghrrdhkvghrnhgvlhdrohhrgh X-GND-Sasl: thomas.richard@bootlin.com Add a data pointer to store private data in the forwarder. Reviewed-by: Andy Shevchenko Reviewed-by: Geert Uytterhoeven Signed-off-by: Thomas Richard --- 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 8bdde022f292..c70912d4b39b 100644 --- a/drivers/gpio/gpio-aggregator.c +++ b/drivers/gpio/gpio-aggregator.c @@ -246,6 +246,7 @@ 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 */ }; @@ -504,6 +505,18 @@ struct gpio_chip *gpiochip_fwd_get_gpiochip(struct gpiochip_fwd *fwd) } EXPORT_SYMBOL_NS_GPL(gpiochip_fwd_get_gpiochip, "GPIO_FORWARDER"); +/** + * gpiochip_fwd_get_data - Get driver-private data for the GPIO forwarder + * @fwd: GPIO forwarder + * + * Returns: The driver-private data for the GPIO forwarder + */ +void *gpiochip_fwd_get_data(struct gpiochip_fwd *fwd) +{ + return fwd->data; +} +EXPORT_SYMBOL_NS_GPL(gpiochip_fwd_get_data, "GPIO_FORWARDER"); + /** * gpiochip_fwd_gpio_request - Request a line of the GPIO forwarder * @fwd: GPIO forwarder @@ -768,10 +781,11 @@ EXPORT_SYMBOL_NS_GPL(gpiochip_fwd_desc_free, "GPIO_FORWARDER"); /** * gpiochip_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 gpiochip_fwd_register(struct gpiochip_fwd *fwd) +int gpiochip_fwd_register(struct gpiochip_fwd *fwd, void *data) { struct gpio_chip *chip = &fwd->chip; @@ -787,6 +801,8 @@ int gpiochip_fwd_register(struct gpiochip_fwd *fwd) else spin_lock_init(&fwd->slock); + fwd->data = data; + return devm_gpiochip_add_data(chip->parent, chip, fwd); } EXPORT_SYMBOL_NS_GPL(gpiochip_fwd_register, "GPIO_FORWARDER"); @@ -831,7 +847,7 @@ static struct gpiochip_fwd *gpiochip_fwd_create(struct device *dev, return ERR_PTR(error); } - error = gpiochip_fwd_register(fwd); + error = gpiochip_fwd_register(fwd, NULL); if (error) return ERR_PTR(error); diff --git a/include/linux/gpio/forwarder.h b/include/linux/gpio/forwarder.h index 45e0190308f0..ee5d8355f735 100644 --- a/include/linux/gpio/forwarder.h +++ b/include/linux/gpio/forwarder.h @@ -11,10 +11,12 @@ struct gpiochip_fwd *devm_gpiochip_fwd_alloc(struct device *dev, int gpiochip_fwd_desc_add(struct gpiochip_fwd *fwd, struct gpio_desc *desc, unsigned int offset); void gpiochip_fwd_desc_free(struct gpiochip_fwd *fwd, unsigned int offset); -int gpiochip_fwd_register(struct gpiochip_fwd *fwd); +int gpiochip_fwd_register(struct gpiochip_fwd *fwd, void *data); struct gpio_chip *gpiochip_fwd_get_gpiochip(struct gpiochip_fwd *fwd); +void *gpiochip_fwd_get_data(struct gpiochip_fwd *fwd); + int gpiochip_fwd_gpio_request(struct gpiochip_fwd *fwd, unsigned int offset); int gpiochip_fwd_gpio_get_direction(struct gpiochip_fwd *fwd, unsigned int offset);