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
21static const struct intel_th_drvdata intel_th_acpi_pch = {
22	.host_mode_only	= 1,
23};
24
25static const struct intel_th_drvdata intel_th_acpi_uncore = {
26	.host_mode_only	= 1,
27};
28
29static 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
35MODULE_DEVICE_TABLE(acpi, intel_th_acpi_ids);
36
37static int intel_th_acpi_probe(struct platform_device *pdev)
38{
39	struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);
40	struct resource resource[TH_MMIO_END];
41	const struct acpi_device_id *id;
42	struct intel_th *th;
43	int i, r;
44
45	id = acpi_match_device(intel_th_acpi_ids, &pdev->dev);
46	if (!id)
47		return -ENODEV;
48
49	for (i = 0, r = 0; i < pdev->num_resources && r < TH_MMIO_END; i++)
50		if (pdev->resource[i].flags &
51		    (IORESOURCE_IRQ | IORESOURCE_MEM))
52			resource[r++] = pdev->resource[i];
53
54	th = intel_th_alloc(&pdev->dev, (void *)id->driver_data, resource, r);
55	if (IS_ERR(th))
56		return PTR_ERR(th);
57
58	adev->driver_data = th;
59
60	return 0;
61}
62
63static int intel_th_acpi_remove(struct platform_device *pdev)
64{
65	struct intel_th *th = platform_get_drvdata(pdev);
66
67	intel_th_free(th);
68
69	return 0;
70}
71
72static struct platform_driver intel_th_acpi_driver = {
73	.probe		= intel_th_acpi_probe,
74	.remove		= intel_th_acpi_remove,
75	.driver		= {
76		.name			= DRIVER_NAME,
77		.acpi_match_table	= intel_th_acpi_ids,
78	},
79};
80
81module_platform_driver(intel_th_acpi_driver);
82
83MODULE_LICENSE("GPL v2");
84MODULE_DESCRIPTION("Intel(R) Trace Hub ACPI controller driver");
85MODULE_AUTHOR("Alexander Shishkin <alexander.shishkin@intel.com>");
86