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4b45efe8 AS |
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 | ||
24 | static const struct intel_lpss_platform_info spt_info = { | |
25 | .clk_rate = 120000000, | |
26 | }; | |
27 | ||
28 | static const struct acpi_device_id intel_lpss_acpi_ids[] = { | |
29 | /* SPT */ | |
30 | { "INT3446", (kernel_ulong_t)&spt_info }, | |
31 | { "INT3447", (kernel_ulong_t)&spt_info }, | |
32 | { } | |
33 | }; | |
34 | MODULE_DEVICE_TABLE(acpi, intel_lpss_acpi_ids); | |
35 | ||
36 | static int intel_lpss_acpi_probe(struct platform_device *pdev) | |
37 | { | |
38 | struct intel_lpss_platform_info *info; | |
39 | const struct acpi_device_id *id; | |
40 | ||
41 | id = acpi_match_device(intel_lpss_acpi_ids, &pdev->dev); | |
42 | if (!id) | |
43 | return -ENODEV; | |
44 | ||
45 | info = devm_kmemdup(&pdev->dev, (void *)id->driver_data, sizeof(*info), | |
46 | GFP_KERNEL); | |
47 | if (!info) | |
48 | return -ENOMEM; | |
49 | ||
50 | info->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
51 | info->irq = platform_get_irq(pdev, 0); | |
52 | ||
53 | pm_runtime_set_active(&pdev->dev); | |
54 | pm_runtime_enable(&pdev->dev); | |
55 | ||
56 | return intel_lpss_probe(&pdev->dev, info); | |
57 | } | |
58 | ||
59 | static int intel_lpss_acpi_remove(struct platform_device *pdev) | |
60 | { | |
61 | intel_lpss_remove(&pdev->dev); | |
62 | pm_runtime_disable(&pdev->dev); | |
63 | ||
64 | return 0; | |
65 | } | |
66 | ||
67 | static INTEL_LPSS_PM_OPS(intel_lpss_acpi_pm_ops); | |
68 | ||
69 | static struct platform_driver intel_lpss_acpi_driver = { | |
70 | .probe = intel_lpss_acpi_probe, | |
71 | .remove = intel_lpss_acpi_remove, | |
72 | .driver = { | |
73 | .name = "intel-lpss", | |
74 | .acpi_match_table = intel_lpss_acpi_ids, | |
75 | .pm = &intel_lpss_acpi_pm_ops, | |
76 | }, | |
77 | }; | |
78 | ||
79 | module_platform_driver(intel_lpss_acpi_driver); | |
80 | ||
81 | MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>"); | |
82 | MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>"); | |
83 | MODULE_DESCRIPTION("Intel LPSS ACPI driver"); | |
84 | MODULE_LICENSE("GPL v2"); |