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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> | |
028af594 | 21 | #include <linux/property.h> |
4b45efe8 AS |
22 | |
23 | #include "intel-lpss.h" | |
24 | ||
25 | static const struct intel_lpss_platform_info spt_info = { | |
26 | .clk_rate = 120000000, | |
27 | }; | |
28 | ||
028af594 MW |
29 | static struct property_entry spt_i2c_properties[] = { |
30 | PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 230), | |
31 | { }, | |
32 | }; | |
33 | ||
34 | static struct property_set spt_i2c_pset = { | |
35 | .properties = spt_i2c_properties, | |
36 | }; | |
37 | ||
38 | static const struct intel_lpss_platform_info spt_i2c_info = { | |
39 | .clk_rate = 120000000, | |
40 | .pset = &spt_i2c_pset, | |
41 | }; | |
42 | ||
6a636ec0 MW |
43 | static const struct intel_lpss_platform_info bxt_info = { |
44 | .clk_rate = 100000000, | |
45 | }; | |
46 | ||
47 | static const struct intel_lpss_platform_info bxt_i2c_info = { | |
48 | .clk_rate = 133000000, | |
49 | }; | |
50 | ||
4b45efe8 AS |
51 | static const struct acpi_device_id intel_lpss_acpi_ids[] = { |
52 | /* SPT */ | |
028af594 MW |
53 | { "INT3446", (kernel_ulong_t)&spt_i2c_info }, |
54 | { "INT3447", (kernel_ulong_t)&spt_i2c_info }, | |
6a636ec0 MW |
55 | /* BXT */ |
56 | { "80860AAC", (kernel_ulong_t)&bxt_i2c_info }, | |
57 | { "80860ABC", (kernel_ulong_t)&bxt_info }, | |
58 | { "80860AC2", (kernel_ulong_t)&bxt_info }, | |
59 | /* APL */ | |
60 | { "80865AAC", (kernel_ulong_t)&bxt_i2c_info }, | |
61 | { "80865ABC", (kernel_ulong_t)&bxt_info }, | |
62 | { "80865AC2", (kernel_ulong_t)&bxt_info }, | |
4b45efe8 AS |
63 | { } |
64 | }; | |
65 | MODULE_DEVICE_TABLE(acpi, intel_lpss_acpi_ids); | |
66 | ||
67 | static int intel_lpss_acpi_probe(struct platform_device *pdev) | |
68 | { | |
69 | struct intel_lpss_platform_info *info; | |
70 | const struct acpi_device_id *id; | |
71 | ||
72 | id = acpi_match_device(intel_lpss_acpi_ids, &pdev->dev); | |
73 | if (!id) | |
74 | return -ENODEV; | |
75 | ||
76 | info = devm_kmemdup(&pdev->dev, (void *)id->driver_data, sizeof(*info), | |
77 | GFP_KERNEL); | |
78 | if (!info) | |
79 | return -ENOMEM; | |
80 | ||
81 | info->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
82 | info->irq = platform_get_irq(pdev, 0); | |
83 | ||
84 | pm_runtime_set_active(&pdev->dev); | |
85 | pm_runtime_enable(&pdev->dev); | |
86 | ||
87 | return intel_lpss_probe(&pdev->dev, info); | |
88 | } | |
89 | ||
90 | static int intel_lpss_acpi_remove(struct platform_device *pdev) | |
91 | { | |
92 | intel_lpss_remove(&pdev->dev); | |
93 | pm_runtime_disable(&pdev->dev); | |
94 | ||
95 | return 0; | |
96 | } | |
97 | ||
98 | static INTEL_LPSS_PM_OPS(intel_lpss_acpi_pm_ops); | |
99 | ||
100 | static struct platform_driver intel_lpss_acpi_driver = { | |
101 | .probe = intel_lpss_acpi_probe, | |
102 | .remove = intel_lpss_acpi_remove, | |
103 | .driver = { | |
104 | .name = "intel-lpss", | |
105 | .acpi_match_table = intel_lpss_acpi_ids, | |
106 | .pm = &intel_lpss_acpi_pm_ops, | |
107 | }, | |
108 | }; | |
109 | ||
110 | module_platform_driver(intel_lpss_acpi_driver); | |
111 | ||
112 | MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>"); | |
113 | MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>"); | |
114 | MODULE_DESCRIPTION("Intel LPSS ACPI driver"); | |
115 | MODULE_LICENSE("GPL v2"); |