From nobody Fri Apr 3 01:25:55 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 F2D93366DCF; Fri, 13 Mar 2026 07:13:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773386023; cv=none; b=b20pF5iJVdTc8A/O6EQZu8d37J6sXbrLJDqLu5JU9i6Eq27IA9LXO2nmn4il4sXvlFEq+0rTIWu7dj0OXECdNsq0dtQLRC9w9QWWgvGNjoowxoJE5fdvfV0uwo3FIZrNfSj0GQxNZ8nhd1ix/wc9gfAoMaH0yw8moIL2N3lp/I8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773386023; c=relaxed/simple; bh=40Cz4hesa3A7f6nuxyb4PMpfao9zv7QlEkjCMHd2dk0=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=LHLMdDy6rrfzHm0Jyt5NpnHtUTMPfkmo9+mSIGosLY2agMxKaqCf3gnh0aP+eOkdCBeO79dlsnKnKIAnp5h0H46KchtiwgK39d1IjLDUbP72R1U7lqxx6LHtyZ1NSoVGOi0z5CgYG9btCOCjdkbzCLe0MAto+meL0DllG+vJKgw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=bkLIe6u7; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="bkLIe6u7" Received: by smtp.kernel.org (Postfix) with ESMTPS id B1D72C19421; Fri, 13 Mar 2026 07:13:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773386022; bh=40Cz4hesa3A7f6nuxyb4PMpfao9zv7QlEkjCMHd2dk0=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=bkLIe6u77B371GN9hRTU8YONJd+tsnZCkXYvDvBudpkraH1ZKEyz7W+7XzGEN6DP2 4zqoZ1PrQnBPw6+lZCynlqRCHuNGXwbW/TTA+6bKNJPtbPoTwzMQzrkv9c9kv9KuI9 owyu5KYQSELf7mYCxORWaBp2RlJG5E7vZlp2kw2SuqmLYzf+Kd6P+Onhau1cscaNhj NP0hJQWVC1qL2mrKOiuBaPIVesfAKpP2KmB2dPjvIjdSVXwS0S2jxsyI3aAjJ21/d6 S8XfJ1KPKsL9NREaCpa4HCtLykbes8bzraaGrPOfZZx+jq1fgLTLjaj/kdTqFBzzHG xBV/zVfi0oDmg== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id A4776106FD91; Fri, 13 Mar 2026 07:13:42 +0000 (UTC) From: Jan Petrous via B4 Relay Date: Fri, 13 Mar 2026 08:13:32 +0100 Subject: [PATCH net-next v12 1/4] net: stmmac: platform: read channels irq 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: <20260313-dwmac_multi_irq-v12-1-b5c9d0aa13d6@oss.nxp.com> References: <20260313-dwmac_multi_irq-v12-0-b5c9d0aa13d6@oss.nxp.com> In-Reply-To: <20260313-dwmac_multi_irq-v12-0-b5c9d0aa13d6@oss.nxp.com> To: Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Maxime Coquelin , Alexandre Torgue , Chester Lin , Matthias Brugger , Ghennadi Procopciuc , NXP S32 Linux Team , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Frank Li Cc: netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, imx@lists.linux.dev, devicetree@vger.kernel.org, rmk+kernel@armlinux.org.uk, vladimir.oltean@nxp.com, boon.khai.ng@altera.com, "Jan Petrous (OSS)" X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=ed25519-sha256; t=1773386021; l=2728; i=jan.petrous@oss.nxp.com; s=20240922; h=from:subject:message-id; bh=U5+X0LRT0aJVW/rwNRk17jxj0WPmT49gK8hZ1ZKJZvk=; b=+qvu9tbUVfssBr/Kelwmaz/57s0Cx+ZtNQ8YrnxuIKlBytk+lLO00OmH8ueH3m6xfHNOEaw// 8RGGjOUYwH/DmJQRw1nqfddvC7Bb5DXoOdCy3OBiI9Ne3TC6UIw9yqb X-Developer-Key: i=jan.petrous@oss.nxp.com; a=ed25519; pk=Ke3wwK7rb2Me9UQRf6vR8AsfJZfhTyoDaxkUCqmSWYY= X-Endpoint-Received: by B4 Relay for jan.petrous@oss.nxp.com/20240922 with auth_id=217 X-Original-From: "Jan Petrous (OSS)" Reply-To: jan.petrous@oss.nxp.com From: "Jan Petrous (OSS)" Read IRQ resources for all rx/tx channels, to allow Multi-IRQ mode for platform glue drivers. Reviewed-by: Matthias Brugger Signed-off-by: Jan Petrous (OSS) Reviewed-by: Russell King (Oracle) --- .../net/ethernet/stmicro/stmmac/stmmac_platform.c | 57 ++++++++++++++++++= +++- 1 file changed, 56 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/driver= s/net/ethernet/stmicro/stmmac/stmmac_platform.c index 3b514a702612..59aac0afc609 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c @@ -695,9 +695,47 @@ struct clk *stmmac_pltfr_find_clk(struct plat_stmmacen= et_data *plat_dat, } EXPORT_SYMBOL_GPL(stmmac_pltfr_find_clk); =20 +/** + * stmmac_pltfr_get_irq_array - Read per-channel IRQs from platform device + * @pdev: platform device + * @fmt: IRQ name format string (e.g., "tx-queue-%d") + * @irqs: array to store IRQ numbers + * @num: maximum number of IRQs to read + * + * Return: 0 on success, -EPROBE_DEFER if IRQ is deferred, -EINVAL on erro= r. + * Missing IRQs are set to 0 and iteration stops at first missing IRQ. + */ +static int stmmac_pltfr_get_irq_array(struct platform_device *pdev, + const char *fmt, int *irqs, size_t num) +{ + char name[16]; + int i; + + for (i =3D 0; i < num; i++) { + if (snprintf(name, sizeof(name), fmt, i) >=3D sizeof(name)) + return -EINVAL; + + irqs[i] =3D platform_get_irq_byname_optional(pdev, name); + if (irqs[i] =3D=3D -EPROBE_DEFER) + return -EPROBE_DEFER; + + if (irqs[i] <=3D 0) { + dev_dbg(&pdev->dev, "IRQ %s not found\n", name); + + /* Stop silently on first unset irq */ + irqs[i] =3D 0; + break; + } + } + + return 0; +} + int stmmac_get_platform_resources(struct platform_device *pdev, struct stmmac_resources *stmmac_res) { + int ret; + memset(stmmac_res, 0, sizeof(*stmmac_res)); =20 /* Get IRQ information early to have an ability to ask for deferred @@ -733,7 +771,24 @@ int stmmac_get_platform_resources(struct platform_devi= ce *pdev, =20 stmmac_res->addr =3D devm_platform_ioremap_resource(pdev, 0); =20 - return PTR_ERR_OR_ZERO(stmmac_res->addr); + if (IS_ERR(stmmac_res->addr)) + return PTR_ERR(stmmac_res->addr); + + /* TX channels irq */ + ret =3D stmmac_pltfr_get_irq_array(pdev, "tx-queue-%d", + stmmac_res->tx_irq, + MTL_MAX_TX_QUEUES); + if (ret) + return ret; + + /* RX channels irq */ + ret =3D stmmac_pltfr_get_irq_array(pdev, "rx-queue-%d", + stmmac_res->rx_irq, + MTL_MAX_RX_QUEUES); + if (ret) + return ret; + + return 0; } EXPORT_SYMBOL_GPL(stmmac_get_platform_resources); =20 --=20 2.47.0