From nobody Tue Apr 7 23:43:59 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 690023C945D; Wed, 11 Mar 2026 10:18:12 +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=1773224292; cv=none; b=oLNxq8gk46bFTIFKQ4aCt6qWyxG2A42qagS94cCmgCm8iB8ffG/PvzvkgQNSak92Ga3W3/CiebByyV5DY3nRFOMHLwGWXYp+XdLUxyJydyZpvs5isbrTHUBeusyfSgJTJdmfNON6ZT08XbrCesvlloCf/CepVywQLm+8Fpl3UNc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773224292; c=relaxed/simple; bh=KLueA/c6Dz81/C8ynUU6RVHQqxMTLTUtghgfet0J2Ow=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=jGNhWESRnfZK7Ytu9tmLYf1CI4QYDOOCg1RVOfkArOFIDOfS21SxAU6jodUHaz/BEhe/X0DrfiE2rCumtnJEcNxn44XfgE9iAi9My7bLYRiJcHBcfmX/QTIsHlKjts1W60iFaiCMxz9IoWQWeiOhCsxpB3MxpIGw3Hvl8san1yQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=mTEosz+p; 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="mTEosz+p" Received: by smtp.kernel.org (Postfix) with ESMTPS id 36134C2BCB0; Wed, 11 Mar 2026 10:18:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773224292; bh=KLueA/c6Dz81/C8ynUU6RVHQqxMTLTUtghgfet0J2Ow=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=mTEosz+porOROi16F15hqrBFVAoMVHypgQ2OATZOFvrYnrW1r8vvqO/jqyt3kjRgn AIq+KhWUTCwu1jw6S1/z+QqLz0pA38LPPAmjAKHbfd2Xww1NH5XA38rHFcRg6TnKkJ u0D7bO+uOvSTXcUzWJ0dIef+FQLCPm8w7EEz25tKRujR+RluMab4IV7t+liEqa60j8 5950+NvpVaGxzTVejsH8oAXZ9yhJ202L/Cmx9IU+z4w2e4SQrAnzOu5P29kTsE5w9I NSxQSMmH/FUDs5Hc5raKm6zMHspBPO0UMy022Ai74hvNkm7kSe5/QnvLiibvj0NQA6 08Ch1D352MrYw== 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 281271049527; Wed, 11 Mar 2026 10:18:12 +0000 (UTC) From: Jan Petrous via B4 Relay Date: Wed, 11 Mar 2026 11:17:59 +0100 Subject: [PATCH v10 2/5] 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: <20260311-dwmac_multi_irq-v10-2-7ab1669759b5@oss.nxp.com> References: <20260311-dwmac_multi_irq-v10-0-7ab1669759b5@oss.nxp.com> In-Reply-To: <20260311-dwmac_multi_irq-v10-0-7ab1669759b5@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=1773224290; l=2726; i=jan.petrous@oss.nxp.com; s=20240922; h=from:subject:message-id; bh=/ncF81mYqriMzIkXDHCjmpdMkczIZjJbkswTEDIvT3Y=; b=bm5gtvhweXyuMN7zIx3xAqcxJZj6Ixg3v6ty41EZIAlSzdOUny2h+SMlwnULvokzSuV17til/ CFDKd5xFoz1D2CGNgGGAuQ+LwKs62AnUhVTnLZI2FF4M/OYyg8quuEb 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) --- .../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 5c9fd91a1db9..7c299e47ff14 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c @@ -697,9 +697,47 @@ 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; + + STMMAC_FOREACH_MTL_QUEUE(i, num) { + 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 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 @@ -735,7 +773,24 @@ 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