From patchwork Thu Feb 27 11:24:59 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yixun Lan X-Patchwork-Id: 13994275 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7D8D2C021BE for ; Thu, 27 Feb 2025 11:59:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References:Message-Id :MIME-Version:Subject:Date:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Uhs3f/Ts5QwP1dFvrv1UCNe9u1IOL/9rKaYjB8ty7Sk=; b=Tq47ZRHTzC4FGr BXOPGDgVG/IwzKMmJWlIDXKfvc/mSgBwCG1MNvWSZwJNwJh2U2NeLCrPfla7uzv/CmEX7yWmVJwjj U9tyIe2Q7bj8Y6uGcCsaA5A6YrY9xNLBcZiOpr6SDdkV7XvCy321yyJkuoDjH5Q8AjGkP9oW3oEhz 8/7TxDmlw3UBZpIy7zFbPs4wMTqrFLXZySU9PzKdaFwe7SgnhlKix4sYUzHekZAW6QHzKaJhf3jKX JQiMl+I43j/jBoevw1eXbOhXXZFuouy1blVPN6luIKllckh4sdU8DBRnuzrWH9t1uesIQFgFj31YZ u76mmBoIvVaQQOCpmbsQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tncYC-00000007GVy-28NN; Thu, 27 Feb 2025 11:59:36 +0000 Received: from woodpecker.gentoo.org ([140.211.166.183] helo=smtp.gentoo.org) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tnc15-00000007AhC-3Heu for linux-riscv@lists.infradead.org; Thu, 27 Feb 2025 11:25:24 +0000 Received: from [127.0.0.1] (unknown [116.232.55.252]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: dlan) by smtp.gentoo.org (Postfix) with ESMTPSA id 6A629340DE6; Thu, 27 Feb 2025 11:25:20 +0000 (UTC) From: Yixun Lan Date: Thu, 27 Feb 2025 19:24:59 +0800 Subject: [PATCH 1/2] irqdomain: support three-cell scheme interrupts MIME-Version: 1.0 Message-Id: <20250227-04-gpio-irq-threecell-v1-1-4ae4d91baadc@gentoo.org> References: <20250227-04-gpio-irq-threecell-v1-0-4ae4d91baadc@gentoo.org> In-Reply-To: <20250227-04-gpio-irq-threecell-v1-0-4ae4d91baadc@gentoo.org> To: Linus Walleij , Bartosz Golaszewski , Thomas Gleixner Cc: Alex Elder , Inochi Amaoto , linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, Yixun Lan X-Mailer: b4 0.15-dev X-Developer-Signature: v=1; a=openpgp-sha256; l=1139; i=dlan@gentoo.org; h=from:subject:message-id; bh=UZeskF50AAVW4VIGzve81+WsAxXVC9xLTtHgwD9uLs8=; b=owEBzQIy/ZANAwAKATGq6kdZTbvtAcsmYgBnwEuV0jaUFEhkEP6ug87op1aJ2zrrksR0O4/U8 RKhyaKWORWJApMEAAEKAH0WIQS1urjJwxtxFWcCI9wxqupHWU277QUCZ8BLlV8UgAAAAAAuAChp c3N1ZXItZnByQG5vdGF0aW9ucy5vcGVucGdwLmZpZnRoaG9yc2VtYW4ubmV0QjVCQUI4QzlDMzF CNzExNTY3MDIyM0RDMzFBQUVBNDc1OTREQkJFRAAKCRAxqupHWU277UX0EACSHmw0dzvqhyKnH9 rMgv7118nywDJl0Y6Gk4xDkHfe2vMbGXesc+/1KJydfcUdp0VoWk27zqB1h8PibvL1D67EiztH8 lH8sRPHJO+OxcLX2B+xrAmVNIRcpvGrQ/gc5NLrpN1NFiurr/Y3NJXk3egkqaWc4fq0m262vBuH FelcyQvaGmKVxBwa6iiQmbpUht5FtW2dUKGdjVyQ9TxclBag2YTBP1Gju5KvbY9Dv01PD9h0xl2 cJF4jSde2/L+7IEzRGVqhk6jLR48EwLl9fFXOfUC8l2CfnfH6XSmYtC4T5UtcB4P3e1EKmYMWzw Ne1shUaasajMhePQOXx2v0xeGAfpDMvF3i3oTiibBHkbufWtlNFzYaGIOPNOL3fNeJvTS0AYz3N wK2fd4517J5RoUfYfXiN42a/hz2fLT/uKku+QwUOwIRWffEAV8NgmQMsAunat661FUMszCiJRfb 9SITGMdlzp8e/QkyAk15Qb/abS2ClSqBvRkEwi3Jt8TjBoeIl2YEfMb8rvMXVdrjDfRXHxDCn/2 Xi/qed2jBPi8rnXzaSSozsWctOQH/aRoUXieECzwjq2vb4BtPkK22SNFKkUEQjwFqVHyh58TXE7 A6Il0VonnwBEt7ykP0OYKrHobSM485ZWplM/UliXEIlrqYs0ZOYB0IhVCTqFRFqOZT3Q== X-Developer-Key: i=dlan@gentoo.org; a=openpgp; fpr=50B03A1A5CBCD33576EF8CD7920C0DBCAABEFD55 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250227_032523_849337_9773600F X-CRM114-Status: UNSURE ( 9.58 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org The is a prerequisite patch to support parsing three-cell interrupts which encoded as , the translate function will always retrieve irq number and flag from last two cells. Signed-off-by: Yixun Lan --- kernel/irq/irqdomain.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c index ec6d8e72d980f604ded2bfa2143420e0e0095920..cb874ab5e54a4763d601122becd63b6d759e55d2 100644 --- a/kernel/irq/irqdomain.c +++ b/kernel/irq/irqdomain.c @@ -1208,10 +1208,17 @@ int irq_domain_translate_twocell(struct irq_domain *d, unsigned long *out_hwirq, unsigned int *out_type) { + u32 irq, type; + if (WARN_ON(fwspec->param_count < 2)) return -EINVAL; - *out_hwirq = fwspec->param[0]; - *out_type = fwspec->param[1] & IRQ_TYPE_SENSE_MASK; + + irq = fwspec->param_count - 2; + type = fwspec->param_count - 1; + + *out_hwirq = fwspec->param[irq]; + *out_type = fwspec->param[type] & IRQ_TYPE_SENSE_MASK; + return 0; } EXPORT_SYMBOL_GPL(irq_domain_translate_twocell);