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99 lines
2.8 KiB
99 lines
2.8 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Intel PCH/PCU SPI flash PCI driver. |
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* |
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* Copyright (C) 2016, Intel Corporation |
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* Author: Mika Westerberg <[email protected]> |
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*/ |
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#include <linux/ioport.h> |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/pci.h> |
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#include "intel-spi.h" |
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#define BCR 0xdc |
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#define BCR_WPD BIT(0) |
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static const struct intel_spi_boardinfo bxt_info = { |
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.type = INTEL_SPI_BXT, |
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}; |
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static const struct intel_spi_boardinfo cnl_info = { |
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.type = INTEL_SPI_CNL, |
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}; |
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static int intel_spi_pci_probe(struct pci_dev *pdev, |
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const struct pci_device_id *id) |
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{ |
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struct intel_spi_boardinfo *info; |
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struct intel_spi *ispi; |
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u32 bcr; |
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int ret; |
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ret = pcim_enable_device(pdev); |
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if (ret) |
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return ret; |
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info = devm_kmemdup(&pdev->dev, (void *)id->driver_data, sizeof(*info), |
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GFP_KERNEL); |
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if (!info) |
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return -ENOMEM; |
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/* Try to make the chip read/write */ |
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pci_read_config_dword(pdev, BCR, &bcr); |
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if (!(bcr & BCR_WPD)) { |
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bcr |= BCR_WPD; |
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pci_write_config_dword(pdev, BCR, bcr); |
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pci_read_config_dword(pdev, BCR, &bcr); |
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} |
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info->writeable = !!(bcr & BCR_WPD); |
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ispi = intel_spi_probe(&pdev->dev, &pdev->resource[0], info); |
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if (IS_ERR(ispi)) |
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return PTR_ERR(ispi); |
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pci_set_drvdata(pdev, ispi); |
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return 0; |
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} |
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static void intel_spi_pci_remove(struct pci_dev *pdev) |
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{ |
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intel_spi_remove(pci_get_drvdata(pdev)); |
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} |
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static const struct pci_device_id intel_spi_pci_ids[] = { |
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{ PCI_VDEVICE(INTEL, 0x02a4), (unsigned long)&bxt_info }, |
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{ PCI_VDEVICE(INTEL, 0x06a4), (unsigned long)&bxt_info }, |
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{ PCI_VDEVICE(INTEL, 0x18e0), (unsigned long)&bxt_info }, |
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{ PCI_VDEVICE(INTEL, 0x19e0), (unsigned long)&bxt_info }, |
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{ PCI_VDEVICE(INTEL, 0x1bca), (unsigned long)&bxt_info }, |
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{ PCI_VDEVICE(INTEL, 0x34a4), (unsigned long)&bxt_info }, |
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{ PCI_VDEVICE(INTEL, 0x43a4), (unsigned long)&cnl_info }, |
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{ PCI_VDEVICE(INTEL, 0x4b24), (unsigned long)&bxt_info }, |
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{ PCI_VDEVICE(INTEL, 0x4da4), (unsigned long)&bxt_info }, |
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{ PCI_VDEVICE(INTEL, 0x51a4), (unsigned long)&cnl_info }, |
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{ PCI_VDEVICE(INTEL, 0x54a4), (unsigned long)&cnl_info }, |
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{ PCI_VDEVICE(INTEL, 0x7aa4), (unsigned long)&cnl_info }, |
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{ PCI_VDEVICE(INTEL, 0xa0a4), (unsigned long)&bxt_info }, |
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{ PCI_VDEVICE(INTEL, 0xa1a4), (unsigned long)&bxt_info }, |
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{ PCI_VDEVICE(INTEL, 0xa224), (unsigned long)&bxt_info }, |
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{ PCI_VDEVICE(INTEL, 0xa324), (unsigned long)&cnl_info }, |
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{ PCI_VDEVICE(INTEL, 0xa3a4), (unsigned long)&bxt_info }, |
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{ }, |
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}; |
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MODULE_DEVICE_TABLE(pci, intel_spi_pci_ids); |
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static struct pci_driver intel_spi_pci_driver = { |
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.name = "intel-spi", |
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.id_table = intel_spi_pci_ids, |
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.probe = intel_spi_pci_probe, |
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.remove = intel_spi_pci_remove, |
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}; |
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module_pci_driver(intel_spi_pci_driver); |
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MODULE_DESCRIPTION("Intel PCH/PCU SPI flash PCI driver"); |
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MODULE_AUTHOR("Mika Westerberg <[email protected]>"); |
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MODULE_LICENSE("GPL v2");
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