From patchwork Wed Feb 14 16:24:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Th=C3=A9o_Lebrun?= X-Patchwork-Id: 13556851 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 74A63C48BEE for ; Wed, 14 Feb 2024 17:31:05 +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=mnrfoiGttWmo8Hfq+K0AwlR/WSPPdht2dSOobyEFMrE=; b=IhSJevYsSqrWNL J9Nfz9FGHjMCRQDnp54NxmUxttHbe2cw/WZhm/REHxL6UedvueIBRzFZv9N86tkKxNPFXD3JElf20 nsQTJbZENLJVqydn5hTKiMIA4DQtnSTn7uFoqJtox2N2tmUCUIdNInWydELCGaJfcE1ITxy3yjE9P rDitT9tfpy8VBFiZ+2wDDbXhoNUayLANdhoTsK8NEjduJDDIFqfp2R278dnUEmEr74SUcXG/02+hm 3KQnPUBQthHNaorm0YKncpg4qNnhU2KXGU7VqlCnyeJ4yyxCtMfdOJ/Wq6RGeyNrwI8n17KnfACqH WZC96k1WC8wwjHDVoVfw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1raJ5u-0000000DjxZ-2yu7; Wed, 14 Feb 2024 17:30:50 +0000 Received: from relay3-d.mail.gandi.net ([217.70.183.195]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1raI4A-0000000DU14-3Neh for linux-arm-kernel@lists.infradead.org; Wed, 14 Feb 2024 16:25:00 +0000 Received: by mail.gandi.net (Postfix) with ESMTPSA id A1E0A6000A; Wed, 14 Feb 2024 16:24:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1707927897; 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=fLUHnKwkOTd/IZBZWn2NU/F1aOSU/MFfTb5Afq/ZxpU=; b=KDUEmIGKKiQDc+J8thUyJZBerQLKaPdgsNZr7DehO3Rhy5toF0HOTW1YOrn6nNzpcrwGN/ oj9RuY99yzMjMvxcyvxgwWqUSoMKptuu7bduNmiuGAKVM3Re4ZOny3YU5b7NB7W9gzzeuw k33u0eePU0RATJdE7JonqNNPXucIs6ejOm2U5fUcEKFFyXpmn2mkZ7pFCrSMmvW9idAeWz Y2T2Yi72fUlewtLa4z06hJwGuJawSbt7RnZ6Gy41wxK5FFHsjRHDzjBJgWivUbu/U3FBz7 x4txLn3YXqhc6ep62U95osgQi7VjQ9VItfL/Y0bpXCrB4T0eMFp3RSWp5dOnZQ== From: =?utf-8?q?Th=C3=A9o_Lebrun?= Date: Wed, 14 Feb 2024 17:24:10 +0100 Subject: [PATCH 17/23] gpio: nomadik: handle variadic GPIO count MIME-Version: 1.0 Message-Id: <20240214-mbly-gpio-v1-17-f88c0ccf372b@bootlin.com> References: <20240214-mbly-gpio-v1-0-f88c0ccf372b@bootlin.com> In-Reply-To: <20240214-mbly-gpio-v1-0-f88c0ccf372b@bootlin.com> To: Linus Walleij , Bartosz Golaszewski , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Philipp Zabel , Thomas Bogendoerfer Cc: linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, Gregory CLEMENT , Vladimir Kondratiev , Thomas Petazzoni , Tawfik Bayouk , =?utf-8?q?Th=C3=A9o_Lebrun?= X-Mailer: b4 0.12.4 X-GND-Sasl: theo.lebrun@bootlin.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240214_082459_073872_B2D9989D X-CRM114-Status: GOOD ( 10.30 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Read the "ngpios" device-tree property to determine the number of GPIOs for a bank. If not available, fallback to NMK_GPIO_PER_CHIP ie 32 ie the current behavior. The IP block always supports 32 GPIOs, but platforms can expose a lesser amount. The Mobileye EyeQ5 is in this case; one bank is 29 GPIOs and the other is 23. Signed-off-by: Théo Lebrun Reviewed-by: Linus Walleij --- drivers/gpio/gpio-nomadik.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/gpio/gpio-nomadik.c b/drivers/gpio/gpio-nomadik.c index 5b1e3b3efcff..02b53c58adf7 100644 --- a/drivers/gpio/gpio-nomadik.c +++ b/drivers/gpio/gpio-nomadik.c @@ -490,7 +490,7 @@ struct nmk_gpio_chip *nmk_gpio_populate_chip(struct device_node *np, struct resource *res; struct clk *clk; void __iomem *base; - u32 id; + u32 id, ngpio; gpio_pdev = of_find_device_by_node(np); if (!gpio_pdev) { @@ -518,10 +518,15 @@ struct nmk_gpio_chip *nmk_gpio_populate_chip(struct device_node *np, return ERR_PTR(-ENOMEM); } + if (of_property_read_u32(np, "ngpios", &ngpio)) { + ngpio = NMK_GPIO_PER_CHIP; + dev_dbg(&pdev->dev, "populate: using default ngpio (%d)\n", ngpio); + } + nmk_chip->bank = id; chip = &nmk_chip->chip; chip->base = -1; - chip->ngpio = NMK_GPIO_PER_CHIP; + chip->ngpio = ngpio; chip->label = dev_name(&gpio_pdev->dev); chip->parent = &gpio_pdev->dev;