1/*
2 * Intel LPSS ACPI support.
3 *
4 * Copyright (C) 2015, Intel Corporation
5 *
6 * Authors: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
7 *          Mika Westerberg <mika.westerberg@linux.intel.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
14#include <linux/acpi.h>
15#include <linux/ioport.h>
16#include <linux/kernel.h>
17#include <linux/module.h>
18#include <linux/pm.h>
19#include <linux/pm_runtime.h>
20#include <linux/platform_device.h>
21
22#include "intel-lpss.h"
23
24static const struct intel_lpss_platform_info spt_info = {
25	.clk_rate = 120000000,
26};
27
28static const struct intel_lpss_platform_info bxt_info = {
29	.clk_rate = 100000000,
30};
31
32static const struct intel_lpss_platform_info bxt_i2c_info = {
33	.clk_rate = 133000000,
34};
35
36static const struct acpi_device_id intel_lpss_acpi_ids[] = {
37	/* SPT */
38	{ "INT3446", (kernel_ulong_t)&spt_info },
39	{ "INT3447", (kernel_ulong_t)&spt_info },
40	/* BXT */
41	{ "80860AAC", (kernel_ulong_t)&bxt_i2c_info },
42	{ "80860ABC", (kernel_ulong_t)&bxt_info },
43	{ "80860AC2", (kernel_ulong_t)&bxt_info },
44	/* APL */
45	{ "80865AAC", (kernel_ulong_t)&bxt_i2c_info },
46	{ "80865ABC", (kernel_ulong_t)&bxt_info },
47	{ "80865AC2", (kernel_ulong_t)&bxt_info },
48	{ }
49};
50MODULE_DEVICE_TABLE(acpi, intel_lpss_acpi_ids);
51
52static int intel_lpss_acpi_probe(struct platform_device *pdev)
53{
54	struct intel_lpss_platform_info *info;
55	const struct acpi_device_id *id;
56
57	id = acpi_match_device(intel_lpss_acpi_ids, &pdev->dev);
58	if (!id)
59		return -ENODEV;
60
61	info = devm_kmemdup(&pdev->dev, (void *)id->driver_data, sizeof(*info),
62			    GFP_KERNEL);
63	if (!info)
64		return -ENOMEM;
65
66	info->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
67	info->irq = platform_get_irq(pdev, 0);
68
69	pm_runtime_set_active(&pdev->dev);
70	pm_runtime_enable(&pdev->dev);
71
72	return intel_lpss_probe(&pdev->dev, info);
73}
74
75static int intel_lpss_acpi_remove(struct platform_device *pdev)
76{
77	intel_lpss_remove(&pdev->dev);
78	pm_runtime_disable(&pdev->dev);
79
80	return 0;
81}
82
83static INTEL_LPSS_PM_OPS(intel_lpss_acpi_pm_ops);
84
85static struct platform_driver intel_lpss_acpi_driver = {
86	.probe = intel_lpss_acpi_probe,
87	.remove = intel_lpss_acpi_remove,
88	.driver = {
89		.name = "intel-lpss",
90		.acpi_match_table = intel_lpss_acpi_ids,
91		.pm = &intel_lpss_acpi_pm_ops,
92	},
93};
94
95module_platform_driver(intel_lpss_acpi_driver);
96
97MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
98MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>");
99MODULE_DESCRIPTION("Intel LPSS ACPI driver");
100MODULE_LICENSE("GPL v2");
101