From nobody Thu Feb 12 20:29:26 2026 Received: from mx0b-0016f401.pphosted.com (mx0a-0016f401.pphosted.com [67.231.148.174]) (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 2AA33193085; Fri, 7 Jun 2024 15:18:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=67.231.148.174 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717773524; cv=none; b=ePJtyT60sogDPMd6bs2+/8ZB7uFyD57HHW3zfRBHMtQNV4f2uxiN0X4JKaP8Xrfjfx7P8xdOcnMku4nWPUCzB+BwHf7ejxCSkSm2/xIEwlkYA2v+8/Qtk+t3JzBB5SaXdSPjZTzI/UMIBZzZogvLoHQ1PcDA+vWt9bT80plERwM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717773524; c=relaxed/simple; bh=49ap8auEwhAy8YC5iel7wkH+yagEEYaGwYDSaBUvF/0=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=T1BXeR1NSBKF95JKmKqhFSzrW275uvg9GBoKD5UiN1scmZrZjTDeNa7ZA6QTS2j1VaBK/cAVjqFRE1DzcKvI6ZAymf0uZW5Q32MFHcX3EpxeaqIaiyX8iIhINaj6UxGa2hUYQN8liLUAF8FVexsxn7Q28nGjTEjlESpFnInqGLY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=marvell.com; spf=pass smtp.mailfrom=marvell.com; dkim=pass (2048-bit key) header.d=marvell.com header.i=@marvell.com header.b=dtOWbkSv; arc=none smtp.client-ip=67.231.148.174 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=marvell.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=marvell.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=marvell.com header.i=@marvell.com header.b="dtOWbkSv" Received: from pps.filterd (m0045849.ppops.net [127.0.0.1]) by mx0a-0016f401.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 457AEqoO014883; Fri, 7 Jun 2024 08:18:38 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=pfpt0220; bh=i NnlHkouANuXkahlzLTYfy0TMPKB88xp5uumsU34qh8=; b=dtOWbkSvWq3HUizfX 2XZ+fJmyUHy+Jo3Vbw+21Ej8yWMBVw8fVduBwUW1b/kOe5uw9q+no8wmKKSAUzBf nUV8oxo8AGdb8T/I9n/SHhuwkLcSgMJxk2m+Ucr3My5Fw3n7rOyXdkLMZpCkwwPI wkqT+0uHn7Uh+riwcVB621Wm6ihQ+oo1xCDxnvzUEEU1K+QV+ErLqXDBcYkhWcnz uZ1BvPdFdhrzziGDbiBw8kb2Hd5mnzzeX/tgR9jFwKCUpI/qmUruZTSrtgUu+YGJ sEoZ+ahfNbTzM7sidkccAQinTW4WZmMlkcxe/jfm8UskQoVRvEpTOgPe7JRfy5GU cBv4Q== Received: from dc6wp-exch02.marvell.com ([4.21.29.225]) by mx0a-0016f401.pphosted.com (PPS) with ESMTPS id 3ym09ngx2u-3 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 07 Jun 2024 08:18:37 -0700 (PDT) Received: from DC6WP-EXCH02.marvell.com (10.76.176.209) by DC6WP-EXCH02.marvell.com (10.76.176.209) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.4; Fri, 7 Jun 2024 08:18:36 -0700 Received: from maili.marvell.com (10.69.176.80) by DC6WP-EXCH02.marvell.com (10.76.176.209) with Microsoft SMTP Server id 15.2.1544.4 via Frontend Transport; Fri, 7 Jun 2024 08:18:36 -0700 Received: from Dell2s-9.sclab.marvell.com (unknown [10.110.150.250]) by maili.marvell.com (Postfix) with ESMTP id D40C15B6922; Fri, 7 Jun 2024 08:18:35 -0700 (PDT) From: Witold Sadowski To: , , CC: , , , , , Piyush Malgujar , "Witold Sadowski" Subject: [PATCH v8 3/4] spi: cadence: Allow to read basic xSPI configuration from ACPI Date: Fri, 7 Jun 2024 08:18:30 -0700 Message-ID: <20240607151831.3858304-4-wsadowski@marvell.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240607151831.3858304-1-wsadowski@marvell.com> References: <20240607151831.3858304-1-wsadowski@marvell.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Proofpoint-GUID: 6aFLE_k-ji1nUXWLcBt69zoLBX982Kgj X-Proofpoint-ORIG-GUID: 6aFLE_k-ji1nUXWLcBt69zoLBX982Kgj X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-06-07_09,2024-06-06_02,2024-05-17_01 Content-Type: text/plain; charset="utf-8" From: Piyush Malgujar These changes enable reading the configurations from ACPI tables as required for successful probing in an ACPI UEFI environment. In the case of an ACPI-disabled or DTS-based environment, it will continue to read configurations from DTS as before. Signed-off-by: Piyush Malgujar Signed-off-by: Witold Sadowski --- drivers/spi/spi-cadence-xspi.c | 88 +++++++++++++++++++++++++++++++--- 1 file changed, 82 insertions(+), 6 deletions(-) diff --git a/drivers/spi/spi-cadence-xspi.c b/drivers/spi/spi-cadence-xspi.c index 566db2591d34..36c6c25aaea0 100644 --- a/drivers/spi/spi-cadence-xspi.c +++ b/drivers/spi/spi-cadence-xspi.c @@ -2,6 +2,7 @@ // Cadence XSPI flash controller driver // Copyright (C) 2020-21 Cadence =20 +#include #include #include #include @@ -14,6 +15,7 @@ #include #include #include +#include #include #include #include @@ -652,6 +654,67 @@ static int cdns_xspi_mem_op(struct cdns_xspi_dev *cdns= _xspi, (dir !=3D SPI_MEM_NO_DATA)); } =20 +#ifdef CONFIG_ACPI +static bool cdns_xspi_supports_op(struct spi_mem *mem, + const struct spi_mem_op *op) +{ + struct spi_device *spi =3D mem->spi; + const union acpi_object *obj; + struct acpi_device *adev; + + adev =3D ACPI_COMPANION(&spi->dev); + + if (!acpi_dev_get_property(adev, "spi-tx-bus-width", ACPI_TYPE_INTEGER, + &obj)) { + switch (obj->integer.value) { + case 1: + break; + case 2: + spi->mode |=3D SPI_TX_DUAL; + break; + case 4: + spi->mode |=3D SPI_TX_QUAD; + break; + case 8: + spi->mode |=3D SPI_TX_OCTAL; + break; + default: + dev_warn(&spi->dev, + "spi-tx-bus-width %lld not supported\n", + obj->integer.value); + break; + } + } + + if (!acpi_dev_get_property(adev, "spi-rx-bus-width", ACPI_TYPE_INTEGER, + &obj)) { + switch (obj->integer.value) { + case 1: + break; + case 2: + spi->mode |=3D SPI_RX_DUAL; + break; + case 4: + spi->mode |=3D SPI_RX_QUAD; + break; + case 8: + spi->mode |=3D SPI_RX_OCTAL; + break; + default: + dev_warn(&spi->dev, + "spi-rx-bus-width %lld not supported\n", + obj->integer.value); + break; + } + } + + if (!spi_mem_default_supports_op(mem, op)) + return false; + + return true; +} +#endif + static int cdns_xspi_mem_op_execute(struct spi_mem *mem, const struct spi_mem_op *op) { @@ -675,6 +738,9 @@ static int cdns_xspi_adjust_mem_op_size(struct spi_mem = *mem, struct spi_mem_op * } =20 static const struct spi_controller_mem_ops cadence_xspi_mem_ops =3D { +#ifdef CONFIG_ACPI + .supports_op =3D cdns_xspi_supports_op, +#endif .exec_op =3D cdns_xspi_mem_op_execute, .adjust_op_size =3D cdns_xspi_adjust_mem_op_size, }; @@ -726,15 +792,20 @@ static irqreturn_t cdns_xspi_irq_handler(int this_irq= , void *dev) =20 static int cdns_xspi_of_get_plat_data(struct platform_device *pdev) { - struct device_node *node_prop =3D pdev->dev.of_node; + struct fwnode_handle *fwnode_child; unsigned int cs; =20 - for_each_available_child_of_node_scoped(node_prop, node_child) { - if (of_property_read_u32(node_child, "reg", &cs)) { + device_for_each_child_node(&pdev->dev, fwnode_child) { + if (!fwnode_device_is_available(fwnode_child)) + continue; + + if (fwnode_property_read_u32(fwnode_child, "reg", &cs)) { dev_err(&pdev->dev, "Couldn't get memory chip select\n"); + fwnode_handle_put(fwnode_child); return -ENXIO; } else if (cs >=3D CDNS_XSPI_MAX_BANKS) { dev_err(&pdev->dev, "reg (cs) parameter value too large\n"); + fwnode_handle_put(fwnode_child); return -ENXIO; } } @@ -788,6 +859,11 @@ static int cdns_xspi_probe(struct platform_device *pde= v) SPI_MODE_0 | SPI_MODE_3; =20 drv_data =3D of_device_get_match_data(dev); + if (!drv_data) { + drv_data =3D acpi_device_get_match_data(dev); + if (!drv_data) + return -ENODEV; + } =20 host->mem_ops =3D &cadence_xspi_mem_ops; host->dev.of_node =3D pdev->dev.of_node; @@ -814,19 +890,19 @@ static int cdns_xspi_probe(struct platform_device *pd= ev) if (ret) return -ENODEV; =20 - cdns_xspi->iobase =3D devm_platform_ioremap_resource_byname(pdev, "io"); + cdns_xspi->iobase =3D devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(cdns_xspi->iobase)) { dev_err(dev, "Failed to remap controller base address\n"); return PTR_ERR(cdns_xspi->iobase); } =20 - res =3D platform_get_resource_byname(pdev, IORESOURCE_MEM, "sdma"); + res =3D platform_get_resource(pdev, IORESOURCE_MEM, 1); cdns_xspi->sdmabase =3D devm_ioremap_resource(dev, res); if (IS_ERR(cdns_xspi->sdmabase)) return PTR_ERR(cdns_xspi->sdmabase); cdns_xspi->sdmasize =3D resource_size(res); =20 - cdns_xspi->auxbase =3D devm_platform_ioremap_resource_byname(pdev, "aux"); + cdns_xspi->auxbase =3D devm_platform_ioremap_resource(pdev, 2); if (IS_ERR(cdns_xspi->auxbase)) { dev_err(dev, "Failed to remap AUX address\n"); return PTR_ERR(cdns_xspi->auxbase); --=20 2.43.0