utils.c (1a68b346a2c9969c05e80a3b99a9ab160b5655c0) utils.c (ba46e42e925b5d09b4e441f8de3db119cc7df58f)
1// SPDX-License-Identifier: GPL-2.0-only
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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33 * avoid potentially causing trouble on other models and because some HIDs
34 * are re-used on different SoCs for completely different devices.
35 */
36struct override_status_id {
37 struct acpi_device_id hid[2];
38 struct x86_cpu_id cpu_ids[2];
39 struct dmi_system_id dmi_ids[2]; /* Optional */
40 const char *uid;
1// SPDX-License-Identifier: GPL-2.0-only
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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33 * avoid potentially causing trouble on other models and because some HIDs
34 * are re-used on different SoCs for completely different devices.
35 */
36struct override_status_id {
37 struct acpi_device_id hid[2];
38 struct x86_cpu_id cpu_ids[2];
39 struct dmi_system_id dmi_ids[2]; /* Optional */
40 const char *uid;
41 const char *path;
41 unsigned long long status;
42};
43
42 unsigned long long status;
43};
44
44#define ENTRY(status, hid, uid, cpu_model, dmi...) { \
45#define ENTRY(status, hid, uid, path, cpu_model, dmi...) { \
45 { { hid, }, {} }, \
46 { X86_MATCH_INTEL_FAM6_MODEL(cpu_model, NULL), {} }, \
47 { { .matches = dmi }, {} }, \
48 uid, \
46 { { hid, }, {} }, \
47 { X86_MATCH_INTEL_FAM6_MODEL(cpu_model, NULL), {} }, \
48 { { .matches = dmi }, {} }, \
49 uid, \
50 path, \
49 status, \
50}
51
52#define PRESENT_ENTRY_HID(hid, uid, cpu_model, dmi...) \
51 status, \
52}
53
54#define PRESENT_ENTRY_HID(hid, uid, cpu_model, dmi...) \
53 ENTRY(ACPI_STA_DEFAULT, hid, uid, cpu_model, dmi)
55 ENTRY(ACPI_STA_DEFAULT, hid, uid, NULL, cpu_model, dmi)
54
55#define NOT_PRESENT_ENTRY_HID(hid, uid, cpu_model, dmi...) \
56
57#define NOT_PRESENT_ENTRY_HID(hid, uid, cpu_model, dmi...) \
56 ENTRY(0, hid, uid, cpu_model, dmi)
58 ENTRY(0, hid, uid, NULL, cpu_model, dmi)
57
59
60#define PRESENT_ENTRY_PATH(path, cpu_model, dmi...) \
61 ENTRY(ACPI_STA_DEFAULT, "", NULL, path, cpu_model, dmi)
62
63#define NOT_PRESENT_ENTRY_PATH(path, cpu_model, dmi...) \
64 ENTRY(0, "", NULL, path, cpu_model, dmi)
65
58static const struct override_status_id override_status_ids[] = {
59 /*
60 * Bay / Cherry Trail PWM directly poked by GPU driver in win10,
61 * but Linux uses a separate PWM driver, harmless if not used.
62 */
63 PRESENT_ENTRY_HID("80860F09", "1", ATOM_SILVERMONT, {}),
64 PRESENT_ENTRY_HID("80862288", "1", ATOM_AIRMONT, {}),
65

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115};
116
117bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *status)
118{
119 bool ret = false;
120 unsigned int i;
121
122 for (i = 0; i < ARRAY_SIZE(override_status_ids); i++) {
66static const struct override_status_id override_status_ids[] = {
67 /*
68 * Bay / Cherry Trail PWM directly poked by GPU driver in win10,
69 * but Linux uses a separate PWM driver, harmless if not used.
70 */
71 PRESENT_ENTRY_HID("80860F09", "1", ATOM_SILVERMONT, {}),
72 PRESENT_ENTRY_HID("80862288", "1", ATOM_AIRMONT, {}),
73

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123};
124
125bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *status)
126{
127 bool ret = false;
128 unsigned int i;
129
130 for (i = 0; i < ARRAY_SIZE(override_status_ids); i++) {
123 if (acpi_match_device_ids(adev, override_status_ids[i].hid))
124 continue;
125
126 if (!adev->pnp.unique_id ||
127 strcmp(adev->pnp.unique_id, override_status_ids[i].uid))
128 continue;
129
130 if (!x86_match_cpu(override_status_ids[i].cpu_ids))
131 continue;
132
133 if (override_status_ids[i].dmi_ids[0].matches[0].slot &&
134 !dmi_check_system(override_status_ids[i].dmi_ids))
135 continue;
136
131 if (!x86_match_cpu(override_status_ids[i].cpu_ids))
132 continue;
133
134 if (override_status_ids[i].dmi_ids[0].matches[0].slot &&
135 !dmi_check_system(override_status_ids[i].dmi_ids))
136 continue;
137
138 if (override_status_ids[i].path) {
139 struct acpi_buffer path = { ACPI_ALLOCATE_BUFFER, NULL };
140 bool match;
141
142 if (acpi_get_name(adev->handle, ACPI_FULL_PATHNAME, &path))
143 continue;
144
145 match = strcmp((char *)path.pointer, override_status_ids[i].path) == 0;
146 kfree(path.pointer);
147
148 if (!match)
149 continue;
150 } else {
151 if (acpi_match_device_ids(adev, override_status_ids[i].hid))
152 continue;
153
154 if (!adev->pnp.unique_id ||
155 strcmp(adev->pnp.unique_id, override_status_ids[i].uid))
156 continue;
157 }
158
137 *status = override_status_ids[i].status;
138 ret = true;
139 break;
140 }
141
142 return ret;
143}
144

--- 24 unchanged lines hidden --- 		159 *status = override_status_ids[i].status;
160 ret = true;
161 break;
162 }
163
164 return ret;
165}
166

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