From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=74.125.82.169 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792768344; b=cjDDgiCwab4cSjt2eW8P6lIi143u5BqE4Xy2dFrrpdUtj91qYsMxce2BHE1bwXgVkaFl 72T0PZapP7Bj7orNstaKzBNBALVENrLjT9Qz/6ahVP9aeagSuf93ftfYJnKqTU9LejSSJ 4/T2ywcsWj1b0SKW8coutnM+f659x62ZFOq85GZ5StK/eszaTvzNUInfJRG/mbk2aWza7 22pnQOz7/cFDaX16k3MlEy//TiZGKEieitNTv+Tw4BrowrIcYc6vya5FOjvWVa/DVycgk ZTkZWdCjdMoR1v71UNXSLEKaj4e9DwEOYvRvlB/aYRPKzi0SJCO3zGp9d5wuhfNJLDA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792768344; h=DMARC-Filter:Received:DKIM-Signature:X-Google-DKIM-Signature: X-Gm-Message-State:X-Gm-Gg:X-Received:Received:From:To:Cc:Subject: Date:Message-ID:X-Mailer:MIME-Version:Content-Type: Content-Transfer-Encoding; bh=i2DdF1NogOAu0rP4dvG0xeOHjMzgZXCJsumVsORls2c=; b=m9dplvUQIOVxvMJVl0Zek45zrAwQ/NDt2jtsFbGPDLRHxG8v70bmfP2vbgl8LKI/mfqq Ccv2tlRSvXHsC1Y7OVmHovESZ6k0jCeNcg0moxDlLhG6q1fyOCSrIbu4YEpfhR7RxCbn6 7GoDJ0pxY1zeuVffm1PyYOgZAO/jeOF8NcTjRlCTM7l0axf5xyTwlG76EaxYcgR2PTZo9 HrJagVXCEjf0S0IEhNWpGjyBFJ1CYtvpLFhIs/+PpgL4u42dWDV/Hvwrjc3BMYWIVz7tG 5dg659MU5VEWRj9TUzIhsQg3mnX5V/wGuPFWCVOhigJEh3YsRZ14ib3PkNTJRMlp7vg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20251104 header.b=nepXCm5S; arc=none smtp.remote-ip=74.125.82.169 Received: from mail-dy1-f169.google.com (mail-dy1-f169.google.com [74.125.82.169]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DFDFD606A5D5 for ; Fri, 23 Oct 2026 15:12:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org DFDFD606A5D5 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20251104 header.b=nepXCm5S Received: by mail-dy1-f169.google.com with SMTP id 5a478bee46e88-354ba08cfd1so1725312eec.1 for ; Fri, 23 Oct 2026 08:12:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1792768343; x=1793373143; darn=vger.kernel.org; h=content-transfer-encoding:content-type:mime-version:message-id:date :subject:cc:to:from:from:to:cc:subject:date:message-id:reply-to :content-type; bh=i2DdF1NogOAu0rP4dvG0xeOHjMzgZXCJsumVsORls2c=; b=nepXCm5Swo/3Ms1WrVitqAVhv3oJ0sb/g8QnGtg/02BKuKTwTUer6qjjmQVa3bPs1k /jkLm+EF/zOJLoUDfPjkO6NEVV+0sQIBCW4JFP4bYDwVj8ouVGC0VOBF8j6JvibRO9tO sn2BpN/POY62N4zf/JFZItb8l9UFSRZXVGEDY2/pPNamj2UI7NyAkfHbYxBIbTiDv9V9 c7szMB7veCAnOxZeMtJu8lobCPi2wh0eN2tniRUa8Q/XWSLzw+ZFyFRNeFyV2EmwOF1R MH9tIhTk/YLB6jFRFz9hTqvzDqpsQXmDRJM5NmmQsYC6kMJ1cWsKfBo/ZsJxdZJZAyCs U/UQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1792768343; x=1793373143; h=content-transfer-encoding:content-type:mime-version:message-id:date :subject:cc:to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject :date:message-id:reply-to:content-type; bh=i2DdF1NogOAu0rP4dvG0xeOHjMzgZXCJsumVsORls2c=; b=PMnmbmSKedfWBxDJo+tMYJDgJtEZCB0X3NY0FuKVwtNyguhXwWXfh9GQmFayFZTqSb UCeUwJ/jENHqsZgz9PJ599wKtyPEeZcNfln8UkskomirV9STjMvmKZzUniCKEiWEW/W3 LSc1vohZjcr179vD/KHQkzwlAnX9iudVa/sfTGDfsj7RW83CD9cGL/xLOaunLSwh9vgd joxD5jHOHJ/4zElWmJt0hYzW7kwZUm2o25UTPZ7SjgP+EMrW5PraRSKn0GYSzdxmo5wv WDBFUEvZREVanTKqELphPkdlSpacV/72IB2/i4SRAcKkdICr3OtBY6XVvTd95dYCUfb8 T+BA== X-Gm-Message-State: AFq9FYJb2m6igsHagy+3S6flwC8Q8AzRMQ2T+XFJspLvvKmUr3qN1oiV w62dK5DmNXyGuM5ew2jmoi/sFKK4EYOsNBFhiZ7gbjXddJawnjI95bwgfucJXQ== X-Gm-Gg: AYBFou2eakdkdE31P2moMd0rZero446XJfBE6tpVzyHXCO8ko/x2HJkr5kv0VOmnwo7 uTq5Nicxl/ECyhKBjcqGtuzIQ6HYVnuFfvtlYMLpHEWkTTE6/zC1jWbHClaHF86detSAtm6KEfI +e/kifoCA7q/W5BOGq0M0eM5k4xUfth8j0+rIxmlI1L42eCBx+nZ/wXE+xQ2SNvo5jx0+wYs/Qr uPR7w1OdZSEc2/fIwoyjycsYBBEJWpHDkgd1zDjqLjoUCATgnThR/r8kTbwcbsDbH3HRsSQDtYf yKwtRy3k9wTrKaqopu9x2+fj7TKLvOMQ7FAwN0ZsGZjUPaFzVCwf2FTMPyiUGnaf8gTFyNDq5je Q3uUCn2das/GhXcOtX/8OP6qSRAyNAvcz1CfBopXO7uRol3Wy8i89eispo8PeYRMIfSWrXk8Zd8 Cf0iro5lMfw6VGK1MLjcqsdt56ZS67pIy9Z6n93F6AcN6194151HNMT6F3IiA0kAvgNGQ/rwoLn umdqpvvyr5Yi+8daO8KeorNqdHod2YfhTWFnoNeiTaeTuc9YO/jmils3eHr0YT3MEAbO7Z1aNvp bZ8vG2Z+G9UBPHN0rIw38Z3KMUKFx7DnEp2nLA== X-Received: by 2002:a05:7022:2511:b0:151:7f08:5961 with SMTP id a92af1059eb24-195c0180fc9mr3997851c88.4.1792768342629; Fri, 23 Oct 2026 08:12:22 -0700 (PDT) Received: from localhost ([220.196.228.78]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-197ea7d28ebsm721053c88.6.2026.10.23.08.12.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 23 Oct 2026 08:12:21 -0700 (PDT) From: Liang Hao To: linux-gpio@vger.kernel.org Cc: Liang Hao Subject: [PATCH 0/2] gpiolib: GPIO line irq_set_affinity helper Date: Fri, 23 Oct 2026 23:11:03 +0800 Message-ID: <20261023151209.58772-1-haohlliang@gmail.com> X-Mailer: git-send-email 2.54.0 X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Hi, Several GPIO irqchips omit irq_chip->irq_set_affinity on line IRQs, so user writes to /proc/irq//smp_affinity* fail. The helper covers hierarchical domains with parent_data and chained gpio_irq_chips that use parent_handler and parent virqs without parent_data on the line. This series adds a shared helper so drivers can expose affinity on GPIO line IRQs: the mask is applied on the parent interrupt, and the line IRQ reflects the result for proc and validation. Product init or resume scripts that restore per-line affinity depend on a line-level callback; without it those writes never reach the parent. Patch 1 adds gpiochip_irq_set_affinity() and GPIOCHIP_IRQ_AFFINITY_HELPERS: hierarchical lines use irq_chip_set_affinity_parent(); chained lines resolve the parent virq from gpio_irq_chip and call the parent irq_chip->irq_set_affinity() directly. Unknown parent: -EINVAL. Patch 2 enables the macro on gpio-dwapb (snps,dw-apb-gpio, DT chained). Tested on arm64: sysfs GPIO export + edge, write child gpiolib virq smp_affinity_list/smp_affinity — fails without the series, succeeds and reads back with it. Thanks, Liang Hao Liang Hao (2): gpiolib: Add irq_set_affinity helper for GPIO line IRQs gpio: dwapb: Use gpiolib irq_set_affinity helper drivers/gpio/gpio-dwapb.c | 1 + drivers/gpio/gpiolib.c | 79 +++++++++++++++++++++++++++++++++++++ include/linux/gpio/driver.h | 5 +++ 3 files changed, 85 insertions(+) -- 2.54.0 (Apple Git-157)