1 /* $NetBSD: intel_quirks.c,v 1.2 2021/12/18 23:45:30 riastradh Exp $ */
2
3 // SPDX-License-Identifier: MIT
4 /*
5 * Copyright © 2018 Intel Corporation
6 */
7
8 #include <sys/cdefs.h>
9 __KERNEL_RCSID(0, "$NetBSD: intel_quirks.c,v 1.2 2021/12/18 23:45:30 riastradh Exp $");
10
11 #include <linux/dmi.h>
12
13 #include "intel_display_types.h"
14 #include "intel_quirks.h"
15
16 /*
17 * Some machines (Lenovo U160) do not work with SSC on LVDS for some reason
18 */
quirk_ssc_force_disable(struct drm_i915_private * i915)19 static void quirk_ssc_force_disable(struct drm_i915_private *i915)
20 {
21 i915->quirks |= QUIRK_LVDS_SSC_DISABLE;
22 DRM_INFO("applying lvds SSC disable quirk\n");
23 }
24
25 /*
26 * A machine (e.g. Acer Aspire 5734Z) may need to invert the panel backlight
27 * brightness value
28 */
quirk_invert_brightness(struct drm_i915_private * i915)29 static void quirk_invert_brightness(struct drm_i915_private *i915)
30 {
31 i915->quirks |= QUIRK_INVERT_BRIGHTNESS;
32 DRM_INFO("applying inverted panel brightness quirk\n");
33 }
34
35 /* Some VBT's incorrectly indicate no backlight is present */
quirk_backlight_present(struct drm_i915_private * i915)36 static void quirk_backlight_present(struct drm_i915_private *i915)
37 {
38 i915->quirks |= QUIRK_BACKLIGHT_PRESENT;
39 DRM_INFO("applying backlight present quirk\n");
40 }
41
42 /* Toshiba Satellite P50-C-18C requires T12 delay to be min 800ms
43 * which is 300 ms greater than eDP spec T12 min.
44 */
quirk_increase_t12_delay(struct drm_i915_private * i915)45 static void quirk_increase_t12_delay(struct drm_i915_private *i915)
46 {
47 i915->quirks |= QUIRK_INCREASE_T12_DELAY;
48 DRM_INFO("Applying T12 delay quirk\n");
49 }
50
51 /*
52 * GeminiLake NUC HDMI outputs require additional off time
53 * this allows the onboard retimer to correctly sync to signal
54 */
quirk_increase_ddi_disabled_time(struct drm_i915_private * i915)55 static void quirk_increase_ddi_disabled_time(struct drm_i915_private *i915)
56 {
57 i915->quirks |= QUIRK_INCREASE_DDI_DISABLED_TIME;
58 DRM_INFO("Applying Increase DDI Disabled quirk\n");
59 }
60
61 struct intel_quirk {
62 int device;
63 int subsystem_vendor;
64 int subsystem_device;
65 void (*hook)(struct drm_i915_private *i915);
66 };
67
68 /* For systems that don't have a meaningful PCI subdevice/subvendor ID */
69 struct intel_dmi_quirk {
70 void (*hook)(struct drm_i915_private *i915);
71 const struct dmi_system_id (*dmi_id_list)[];
72 };
73
intel_dmi_reverse_brightness(const struct dmi_system_id * id)74 static int intel_dmi_reverse_brightness(const struct dmi_system_id *id)
75 {
76 DRM_INFO("Backlight polarity reversed on %s\n", id->ident);
77 return 1;
78 }
79
80 static const struct intel_dmi_quirk intel_dmi_quirks[] = {
81 {
82 .dmi_id_list = &(const struct dmi_system_id[]) {
83 {
84 .callback = intel_dmi_reverse_brightness,
85 .ident = "NCR Corporation",
86 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR Corporation"),
87 DMI_MATCH(DMI_PRODUCT_NAME, ""),
88 },
89 },
90 { } /* terminating entry */
91 },
92 .hook = quirk_invert_brightness,
93 },
94 };
95
96 static struct intel_quirk intel_quirks[] = {
97 /* Lenovo U160 cannot use SSC on LVDS */
98 { 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable },
99
100 /* Sony Vaio Y cannot use SSC on LVDS */
101 { 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable },
102
103 /* Acer Aspire 5734Z must invert backlight brightness */
104 { 0x2a42, 0x1025, 0x0459, quirk_invert_brightness },
105
106 /* Acer/eMachines G725 */
107 { 0x2a42, 0x1025, 0x0210, quirk_invert_brightness },
108
109 /* Acer/eMachines e725 */
110 { 0x2a42, 0x1025, 0x0212, quirk_invert_brightness },
111
112 /* Acer/Packard Bell NCL20 */
113 { 0x2a42, 0x1025, 0x034b, quirk_invert_brightness },
114
115 /* Acer Aspire 4736Z */
116 { 0x2a42, 0x1025, 0x0260, quirk_invert_brightness },
117
118 /* Acer Aspire 5336 */
119 { 0x2a42, 0x1025, 0x048a, quirk_invert_brightness },
120
121 /* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */
122 { 0x0a06, 0x1025, 0x0a11, quirk_backlight_present },
123
124 /* Acer C720 Chromebook (Core i3 4005U) */
125 { 0x0a16, 0x1025, 0x0a11, quirk_backlight_present },
126
127 /* Apple Macbook 2,1 (Core 2 T7400) */
128 { 0x27a2, 0x8086, 0x7270, quirk_backlight_present },
129
130 /* Apple Macbook 4,1 */
131 { 0x2a02, 0x106b, 0x00a1, quirk_backlight_present },
132
133 /* Toshiba CB35 Chromebook (Celeron 2955U) */
134 { 0x0a06, 0x1179, 0x0a88, quirk_backlight_present },
135
136 /* HP Chromebook 14 (Celeron 2955U) */
137 { 0x0a06, 0x103c, 0x21ed, quirk_backlight_present },
138
139 /* Dell Chromebook 11 */
140 { 0x0a06, 0x1028, 0x0a35, quirk_backlight_present },
141
142 /* Dell Chromebook 11 (2015 version) */
143 { 0x0a16, 0x1028, 0x0a35, quirk_backlight_present },
144
145 /* Toshiba Satellite P50-C-18C */
146 { 0x191B, 0x1179, 0xF840, quirk_increase_t12_delay },
147
148 /* GeminiLake NUC */
149 { 0x3185, 0x8086, 0x2072, quirk_increase_ddi_disabled_time },
150 { 0x3184, 0x8086, 0x2072, quirk_increase_ddi_disabled_time },
151 /* ASRock ITX*/
152 { 0x3185, 0x1849, 0x2212, quirk_increase_ddi_disabled_time },
153 { 0x3184, 0x1849, 0x2212, quirk_increase_ddi_disabled_time },
154 };
155
intel_init_quirks(struct drm_i915_private * i915)156 void intel_init_quirks(struct drm_i915_private *i915)
157 {
158 struct pci_dev *d = i915->drm.pdev;
159 int i;
160
161 for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
162 struct intel_quirk *q = &intel_quirks[i];
163
164 if (d->device == q->device &&
165 (d->subsystem_vendor == q->subsystem_vendor ||
166 q->subsystem_vendor == PCI_ANY_ID) &&
167 (d->subsystem_device == q->subsystem_device ||
168 q->subsystem_device == PCI_ANY_ID))
169 q->hook(i915);
170 }
171 for (i = 0; i < ARRAY_SIZE(intel_dmi_quirks); i++) {
172 if (dmi_check_system(*intel_dmi_quirks[i].dmi_id_list) != 0)
173 intel_dmi_quirks[i].hook(i915);
174 }
175 }
176