tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: MIT
2/*
3 * Copyright © 2018 Intel Corporation
4 */
5
6#include <linux/dmi.h>
7
8#include "i915_drv.h"
9#include "intel_display_types.h"
10#include "intel_quirks.h"
11
12/*
13 * Some machines (Lenovo U160) do not work with SSC on LVDS for some reason
14 */
15static void quirk_ssc_force_disable(struct drm_i915_private *i915)
16{
17 i915->quirks |= QUIRK_LVDS_SSC_DISABLE;
18 drm_info(&i915->drm, "applying lvds SSC disable quirk\n");
19}
20
21/*
22 * A machine (e.g. Acer Aspire 5734Z) may need to invert the panel backlight
23 * brightness value
24 */
25static void quirk_invert_brightness(struct drm_i915_private *i915)
26{
27 i915->quirks |= QUIRK_INVERT_BRIGHTNESS;
28 drm_info(&i915->drm, "applying inverted panel brightness quirk\n");
29}
30
31/* Some VBT's incorrectly indicate no backlight is present */
32static void quirk_backlight_present(struct drm_i915_private *i915)
33{
34 i915->quirks |= QUIRK_BACKLIGHT_PRESENT;
35 drm_info(&i915->drm, "applying backlight present quirk\n");
36}
37
38/* Toshiba Satellite P50-C-18C requires T12 delay to be min 800ms
39 * which is 300 ms greater than eDP spec T12 min.
40 */
41static void quirk_increase_t12_delay(struct drm_i915_private *i915)
42{
43 i915->quirks |= QUIRK_INCREASE_T12_DELAY;
44 drm_info(&i915->drm, "Applying T12 delay quirk\n");
45}
46
47/*
48 * GeminiLake NUC HDMI outputs require additional off time
49 * this allows the onboard retimer to correctly sync to signal
50 */
51static void quirk_increase_ddi_disabled_time(struct drm_i915_private *i915)
52{
53 i915->quirks |= QUIRK_INCREASE_DDI_DISABLED_TIME;
54 drm_info(&i915->drm, "Applying Increase DDI Disabled quirk\n");
55}
56
57static void quirk_no_pps_backlight_power_hook(struct drm_i915_private *i915)
58{
59 i915->quirks |= QUIRK_NO_PPS_BACKLIGHT_POWER_HOOK;
60 drm_info(&i915->drm, "Applying no pps backlight power quirk\n");
61}
62
63struct intel_quirk {
64 int device;
65 int subsystem_vendor;
66 int subsystem_device;
67 void (*hook)(struct drm_i915_private *i915);
68};
69
70/* For systems that don't have a meaningful PCI subdevice/subvendor ID */
71struct intel_dmi_quirk {
72 void (*hook)(struct drm_i915_private *i915);
73 const struct dmi_system_id (*dmi_id_list)[];
74};
75
76static int intel_dmi_reverse_brightness(const struct dmi_system_id *id)
77{
78 DRM_INFO("Backlight polarity reversed on %s\n", id->ident);
79 return 1;
80}
81
82static int intel_dmi_no_pps_backlight(const struct dmi_system_id *id)
83{
84 DRM_INFO("No pps backlight support on %s\n", id->ident);
85 return 1;
86}
87
88static const struct intel_dmi_quirk intel_dmi_quirks[] = {
89 {
90 .dmi_id_list = &(const struct dmi_system_id[]) {
91 {
92 .callback = intel_dmi_reverse_brightness,
93 .ident = "NCR Corporation",
94 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR Corporation"),
95 DMI_MATCH(DMI_PRODUCT_NAME, ""),
96 },
97 },
98 {
99 .callback = intel_dmi_reverse_brightness,
100 .ident = "Thundersoft TST178 tablet",
101 /* DMI strings are too generic, also match on BIOS date */
102 .matches = {DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
103 DMI_EXACT_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
104 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "To be filled by O.E.M."),
105 DMI_EXACT_MATCH(DMI_BIOS_DATE, "04/15/2014"),
106 },
107 },
108 { } /* terminating entry */
109 },
110 .hook = quirk_invert_brightness,
111 },
112 {
113 .dmi_id_list = &(const struct dmi_system_id[]) {
114 {
115 .callback = intel_dmi_no_pps_backlight,
116 .ident = "Google Lillipup sku524294",
117 .matches = {DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Google"),
118 DMI_EXACT_MATCH(DMI_BOARD_NAME, "Lindar"),
119 DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "sku524294"),
120 },
121 },
122 {
123 .callback = intel_dmi_no_pps_backlight,
124 .ident = "Google Lillipup sku524295",
125 .matches = {DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Google"),
126 DMI_EXACT_MATCH(DMI_BOARD_NAME, "Lindar"),
127 DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "sku524295"),
128 },
129 },
130 { }
131 },
132 .hook = quirk_no_pps_backlight_power_hook,
133 },
134};
135
136static struct intel_quirk intel_quirks[] = {
137 /* Lenovo U160 cannot use SSC on LVDS */
138 { 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable },
139
140 /* Sony Vaio Y cannot use SSC on LVDS */
141 { 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable },
142
143 /* Acer Aspire 5734Z must invert backlight brightness */
144 { 0x2a42, 0x1025, 0x0459, quirk_invert_brightness },
145
146 /* Acer/eMachines G725 */
147 { 0x2a42, 0x1025, 0x0210, quirk_invert_brightness },
148
149 /* Acer/eMachines e725 */
150 { 0x2a42, 0x1025, 0x0212, quirk_invert_brightness },
151
152 /* Acer/Packard Bell NCL20 */
153 { 0x2a42, 0x1025, 0x034b, quirk_invert_brightness },
154
155 /* Acer Aspire 4736Z */
156 { 0x2a42, 0x1025, 0x0260, quirk_invert_brightness },
157
158 /* Acer Aspire 5336 */
159 { 0x2a42, 0x1025, 0x048a, quirk_invert_brightness },
160
161 /* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */
162 { 0x0a06, 0x1025, 0x0a11, quirk_backlight_present },
163
164 /* Acer C720 Chromebook (Core i3 4005U) */
165 { 0x0a16, 0x1025, 0x0a11, quirk_backlight_present },
166
167 /* Apple Macbook 2,1 (Core 2 T7400) */
168 { 0x27a2, 0x8086, 0x7270, quirk_backlight_present },
169
170 /* Apple Macbook 4,1 */
171 { 0x2a02, 0x106b, 0x00a1, quirk_backlight_present },
172
173 /* Toshiba CB35 Chromebook (Celeron 2955U) */
174 { 0x0a06, 0x1179, 0x0a88, quirk_backlight_present },
175
176 /* HP Chromebook 14 (Celeron 2955U) */
177 { 0x0a06, 0x103c, 0x21ed, quirk_backlight_present },
178
179 /* Dell Chromebook 11 */
180 { 0x0a06, 0x1028, 0x0a35, quirk_backlight_present },
181
182 /* Dell Chromebook 11 (2015 version) */
183 { 0x0a16, 0x1028, 0x0a35, quirk_backlight_present },
184
185 /* Toshiba Satellite P50-C-18C */
186 { 0x191B, 0x1179, 0xF840, quirk_increase_t12_delay },
187
188 /* GeminiLake NUC */
189 { 0x3185, 0x8086, 0x2072, quirk_increase_ddi_disabled_time },
190 { 0x3184, 0x8086, 0x2072, quirk_increase_ddi_disabled_time },
191 /* ASRock ITX*/
192 { 0x3185, 0x1849, 0x2212, quirk_increase_ddi_disabled_time },
193 { 0x3184, 0x1849, 0x2212, quirk_increase_ddi_disabled_time },
194};
195
196void intel_init_quirks(struct drm_i915_private *i915)
197{
198 struct pci_dev *d = to_pci_dev(i915->drm.dev);
199 int i;
200
201 for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
202 struct intel_quirk *q = &intel_quirks[i];
203
204 if (d->device == q->device &&
205 (d->subsystem_vendor == q->subsystem_vendor ||
206 q->subsystem_vendor == PCI_ANY_ID) &&
207 (d->subsystem_device == q->subsystem_device ||
208 q->subsystem_device == PCI_ANY_ID))
209 q->hook(i915);
210 }
211 for (i = 0; i < ARRAY_SIZE(intel_dmi_quirks); i++) {
212 if (dmi_check_system(*intel_dmi_quirks[i].dmi_id_list) != 0)
213 intel_dmi_quirks[i].hook(i915);
214 }
215}