1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Intel(R) Trace Hub ACPI driver
4 *
5 * Copyright (C) 2017 Intel Corporation.
6 */
7
8 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
9
10 #include <linux/types.h>
11 #include <linux/module.h>
12 #include <linux/device.h>
13 #include <linux/sysfs.h>
14 #include <linux/platform_device.h>
15 #include <linux/acpi.h>
16
17 #include "intel_th.h"
18
19 #define DRIVER_NAME "intel_th_acpi"
20
21 static const struct intel_th_drvdata intel_th_acpi_pch = {
22 .host_mode_only = 1,
23 };
24
25 static const struct intel_th_drvdata intel_th_acpi_uncore = {
26 .host_mode_only = 1,
27 };
28
29 static const struct acpi_device_id intel_th_acpi_ids[] = {
30 { "INTC1000", (kernel_ulong_t)&intel_th_acpi_uncore },
31 { "INTC1001", (kernel_ulong_t)&intel_th_acpi_pch },
32 { "", 0 },
33 };
34
35 MODULE_DEVICE_TABLE(acpi, intel_th_acpi_ids);
36
intel_th_acpi_probe(struct platform_device * pdev)37 static int intel_th_acpi_probe(struct platform_device *pdev)
38 {
39 struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);
40 const struct acpi_device_id *id;
41 struct intel_th *th;
42
43 id = acpi_match_device(intel_th_acpi_ids, &pdev->dev);
44 if (!id)
45 return -ENODEV;
46
47 th = intel_th_alloc(&pdev->dev, (void *)id->driver_data,
48 pdev->resource, pdev->num_resources, -1);
49 if (IS_ERR(th))
50 return PTR_ERR(th);
51
52 adev->driver_data = th;
53
54 return 0;
55 }
56
intel_th_acpi_remove(struct platform_device * pdev)57 static int intel_th_acpi_remove(struct platform_device *pdev)
58 {
59 struct intel_th *th = platform_get_drvdata(pdev);
60
61 intel_th_free(th);
62
63 return 0;
64 }
65
66 static struct platform_driver intel_th_acpi_driver = {
67 .probe = intel_th_acpi_probe,
68 .remove = intel_th_acpi_remove,
69 .driver = {
70 .name = DRIVER_NAME,
71 .acpi_match_table = intel_th_acpi_ids,
72 },
73 };
74
75 module_platform_driver(intel_th_acpi_driver);
76
77 MODULE_LICENSE("GPL v2");
78 MODULE_DESCRIPTION("Intel(R) Trace Hub ACPI controller driver");
79 MODULE_AUTHOR("Alexander Shishkin <alexander.shishkin@intel.com>");
80
