blob: 5e2344768d53c10bdac74abc94d5b3798848cab3 [file] [log] [blame]
Thomas Gleixnerd2912cb2019-06-04 10:11:33 +02001// SPDX-License-Identifier: GPL-2.0-only
Mika Westerbergfe602832017-06-29 14:45:42 +03002/*
3 * Intel PCH/PCU SPI flash PCI driver.
4 *
5 * Copyright (C) 2016, Intel Corporation
6 * Author: Mika Westerberg <mika.westerberg@linux.intel.com>
Mika Westerbergfe602832017-06-29 14:45:42 +03007 */
8
9#include <linux/ioport.h>
10#include <linux/kernel.h>
11#include <linux/module.h>
12#include <linux/pci.h>
13
14#include "intel-spi.h"
15
16#define BCR 0xdc
17#define BCR_WPD BIT(0)
18
19static const struct intel_spi_boardinfo bxt_info = {
20 .type = INTEL_SPI_BXT,
21};
22
23static int intel_spi_pci_probe(struct pci_dev *pdev,
24 const struct pci_device_id *id)
25{
26 struct intel_spi_boardinfo *info;
27 struct intel_spi *ispi;
28 u32 bcr;
29 int ret;
30
31 ret = pcim_enable_device(pdev);
32 if (ret)
33 return ret;
34
35 info = devm_kmemdup(&pdev->dev, (void *)id->driver_data, sizeof(*info),
36 GFP_KERNEL);
37 if (!info)
38 return -ENOMEM;
39
40 /* Try to make the chip read/write */
41 pci_read_config_dword(pdev, BCR, &bcr);
42 if (!(bcr & BCR_WPD)) {
43 bcr |= BCR_WPD;
44 pci_write_config_dword(pdev, BCR, bcr);
45 pci_read_config_dword(pdev, BCR, &bcr);
46 }
47 info->writeable = !!(bcr & BCR_WPD);
48
49 ispi = intel_spi_probe(&pdev->dev, &pdev->resource[0], info);
50 if (IS_ERR(ispi))
51 return PTR_ERR(ispi);
52
53 pci_set_drvdata(pdev, ispi);
54 return 0;
55}
56
57static void intel_spi_pci_remove(struct pci_dev *pdev)
58{
59 intel_spi_remove(pci_get_drvdata(pdev));
60}
61
62static const struct pci_device_id intel_spi_pci_ids[] = {
Mika Westerberge43f53c2019-04-16 12:11:10 +030063 { PCI_VDEVICE(INTEL, 0x02a4), (unsigned long)&bxt_info },
Mika Westerberg824af372017-09-21 16:19:46 +030064 { PCI_VDEVICE(INTEL, 0x18e0), (unsigned long)&bxt_info },
Mika Westerbergfe602832017-06-29 14:45:42 +030065 { PCI_VDEVICE(INTEL, 0x19e0), (unsigned long)&bxt_info },
Mika Westerberg42460c32018-08-30 11:42:57 +030066 { PCI_VDEVICE(INTEL, 0x34a4), (unsigned long)&bxt_info },
Mika Westerbergd92b0f12017-09-21 16:19:45 +030067 { PCI_VDEVICE(INTEL, 0xa1a4), (unsigned long)&bxt_info },
Kuppuswamy Sathyanarayananec0a9f62017-10-29 15:17:35 -070068 { PCI_VDEVICE(INTEL, 0xa224), (unsigned long)&bxt_info },
Mika Westerbergfe602832017-06-29 14:45:42 +030069 { },
70};
71MODULE_DEVICE_TABLE(pci, intel_spi_pci_ids);
72
73static struct pci_driver intel_spi_pci_driver = {
74 .name = "intel-spi",
75 .id_table = intel_spi_pci_ids,
76 .probe = intel_spi_pci_probe,
77 .remove = intel_spi_pci_remove,
78};
79
80module_pci_driver(intel_spi_pci_driver);
81
82MODULE_DESCRIPTION("Intel PCH/PCU SPI flash PCI driver");
83MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>");
84MODULE_LICENSE("GPL v2");