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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
b7ecf663 HG |
2 | /* |
3 | * X86 ACPI Utility Functions | |
4 | * | |
5 | * Copyright (C) 2017 Hans de Goede <hdegoede@redhat.com> | |
6 | * | |
7 | * Based on various non upstream patches to support the CHT Whiskey Cove PMIC: | |
8 | * Copyright (C) 2013-2015 Intel Corporation. All rights reserved. | |
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9 | */ |
10 | ||
11 | #include <linux/acpi.h> | |
3b6a70be | 12 | #include <linux/dmi.h> |
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13 | #include <asm/cpu_device_id.h> |
14 | #include <asm/intel-family.h> | |
15 | #include "../internal.h" | |
16 | ||
17 | /* | |
18 | * Some ACPI devices are hidden (status == 0x0) in recent BIOS-es because | |
19 | * some recent Windows drivers bind to one device but poke at multiple | |
20 | * devices at the same time, so the others get hidden. | |
3b6a70be HG |
21 | * |
22 | * Some BIOS-es (temporarily) hide specific APCI devices to work around Windows | |
23 | * driver bugs. We use DMI matching to match known cases of this. | |
24 | * | |
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25 | * We work around this by always reporting ACPI_STA_DEFAULT for these |
26 | * devices. Note this MUST only be done for devices where this is safe. | |
27 | * | |
28 | * This forcing of devices to be present is limited to specific CPU (SoC) | |
29 | * models both to avoid potentially causing trouble on other models and | |
30 | * because some HIDs are re-used on different SoCs for completely | |
31 | * different devices. | |
32 | */ | |
33 | struct always_present_id { | |
34 | struct acpi_device_id hid[2]; | |
35 | struct x86_cpu_id cpu_ids[2]; | |
3b6a70be | 36 | struct dmi_system_id dmi_ids[2]; /* Optional */ |
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37 | const char *uid; |
38 | }; | |
39 | ||
40 | #define ICPU(model) { X86_VENDOR_INTEL, 6, model, X86_FEATURE_ANY, } | |
41 | ||
3b6a70be | 42 | #define ENTRY(hid, uid, cpu_models, dmi...) { \ |
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43 | { { hid, }, {} }, \ |
44 | { cpu_models, {} }, \ | |
3b6a70be | 45 | { { .matches = dmi }, {} }, \ |
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46 | uid, \ |
47 | } | |
48 | ||
49 | static const struct always_present_id always_present_ids[] = { | |
50 | /* | |
51 | * Bay / Cherry Trail PWM directly poked by GPU driver in win10, | |
52 | * but Linux uses a separate PWM driver, harmless if not used. | |
53 | */ | |
f2c4db1b | 54 | ENTRY("80860F09", "1", ICPU(INTEL_FAM6_ATOM_SILVERMONT), {}), |
3b6a70be | 55 | ENTRY("80862288", "1", ICPU(INTEL_FAM6_ATOM_AIRMONT), {}), |
ff6cdfd7 YK |
56 | |
57 | /* Lenovo Yoga Book uses PWM2 for keyboard backlight control */ | |
58 | ENTRY("80862289", "2", ICPU(INTEL_FAM6_ATOM_AIRMONT), { | |
59 | DMI_MATCH(DMI_PRODUCT_NAME, "Lenovo YB1-X9"), | |
60 | }), | |
753a448c HG |
61 | /* |
62 | * The INT0002 device is necessary to clear wakeup interrupt sources | |
63 | * on Cherry Trail devices, without it we get nobody cared IRQ msgs. | |
64 | */ | |
3b6a70be | 65 | ENTRY("INT0002", "1", ICPU(INTEL_FAM6_ATOM_AIRMONT), {}), |
b5cc1699 | 66 | /* |
72a361a5 TC |
67 | * On the Dell Venue 11 Pro 7130 and 7139, the DSDT hides |
68 | * the touchscreen ACPI device until a certain time | |
69 | * after _SB.PCI0.GFX0.LCD.LCD1._ON gets called has passed | |
70 | * *and* _STA has been called at least 3 times since. | |
b5cc1699 HG |
71 | */ |
72 | ENTRY("SYNA7500", "1", ICPU(INTEL_FAM6_HASWELL_ULT), { | |
73 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
74 | DMI_MATCH(DMI_PRODUCT_NAME, "Venue 11 Pro 7130"), | |
75 | }), | |
72a361a5 TC |
76 | ENTRY("SYNA7500", "1", ICPU(INTEL_FAM6_HASWELL_ULT), { |
77 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), | |
78 | DMI_MATCH(DMI_PRODUCT_NAME, "Venue 11 Pro 7139"), | |
79 | }), | |
80 | ||
906dc284 | 81 | /* |
1c3b44c0 | 82 | * The GPD win BIOS dated 20170221 has disabled the accelerometer, the |
906dc284 HG |
83 | * drivers sometimes cause crashes under Windows and this is how the |
84 | * manufacturer has solved this :| Note that the the DMI data is less | |
85 | * generic then it seems, a board_vendor of "AMI Corporation" is quite | |
86 | * rare and a board_name of "Default String" also is rare. | |
1c3b44c0 HG |
87 | * |
88 | * Unfortunately the GPD pocket also uses these strings and its BIOS | |
89 | * was copy-pasted from the GPD win, so it has a disabled KIOX000A | |
90 | * node which we should not enable, thus we also check the BIOS date. | |
906dc284 | 91 | */ |
1c3b44c0 HG |
92 | ENTRY("KIOX000A", "1", ICPU(INTEL_FAM6_ATOM_AIRMONT), { |
93 | DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"), | |
94 | DMI_MATCH(DMI_BOARD_NAME, "Default string"), | |
95 | DMI_MATCH(DMI_PRODUCT_NAME, "Default string"), | |
96 | DMI_MATCH(DMI_BIOS_DATE, "02/21/2017") | |
97 | }), | |
906dc284 HG |
98 | ENTRY("KIOX000A", "1", ICPU(INTEL_FAM6_ATOM_AIRMONT), { |
99 | DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"), | |
100 | DMI_MATCH(DMI_BOARD_NAME, "Default string"), | |
101 | DMI_MATCH(DMI_PRODUCT_NAME, "Default string"), | |
102 | DMI_MATCH(DMI_BIOS_DATE, "03/20/2017") | |
103 | }), | |
1c3b44c0 HG |
104 | ENTRY("KIOX000A", "1", ICPU(INTEL_FAM6_ATOM_AIRMONT), { |
105 | DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"), | |
106 | DMI_MATCH(DMI_BOARD_NAME, "Default string"), | |
107 | DMI_MATCH(DMI_PRODUCT_NAME, "Default string"), | |
108 | DMI_MATCH(DMI_BIOS_DATE, "05/25/2017") | |
109 | }), | |
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110 | }; |
111 | ||
112 | bool acpi_device_always_present(struct acpi_device *adev) | |
113 | { | |
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114 | bool ret = false; |
115 | unsigned int i; | |
116 | ||
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117 | for (i = 0; i < ARRAY_SIZE(always_present_ids); i++) { |
118 | if (acpi_match_device_ids(adev, always_present_ids[i].hid)) | |
119 | continue; | |
120 | ||
121 | if (!adev->pnp.unique_id || | |
122 | strcmp(adev->pnp.unique_id, always_present_ids[i].uid)) | |
123 | continue; | |
124 | ||
125 | if (!x86_match_cpu(always_present_ids[i].cpu_ids)) | |
126 | continue; | |
127 | ||
3b6a70be HG |
128 | if (always_present_ids[i].dmi_ids[0].matches[0].slot && |
129 | !dmi_check_system(always_present_ids[i].dmi_ids)) | |
130 | continue; | |
131 | ||
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132 | ret = true; |
133 | break; | |
134 | } | |
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135 | |
136 | return ret; | |
137 | } |