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 static void intel_set_quirk(struct drm_i915_private *i915, enum intel_quirk_id quirk)
13 {
14 	i915->display.quirks.mask |= BIT(quirk);
15 }
16 
17 /*
18  * Some machines (Lenovo U160) do not work with SSC on LVDS for some reason
19  */
20 static void quirk_ssc_force_disable(struct drm_i915_private *i915)
21 {
22 	intel_set_quirk(i915, QUIRK_LVDS_SSC_DISABLE);
23 	drm_info(&i915->drm, "applying lvds SSC disable quirk\n");
24 }
25 
26 /*
27  * A machine (e.g. Acer Aspire 5734Z) may need to invert the panel backlight
28  * brightness value
29  */
30 static void quirk_invert_brightness(struct drm_i915_private *i915)
31 {
32 	intel_set_quirk(i915, QUIRK_INVERT_BRIGHTNESS);
33 	drm_info(&i915->drm, "applying inverted panel brightness quirk\n");
34 }
35 
36 /* Some VBT's incorrectly indicate no backlight is present */
37 static void quirk_backlight_present(struct drm_i915_private *i915)
38 {
39 	intel_set_quirk(i915, QUIRK_BACKLIGHT_PRESENT);
40 	drm_info(&i915->drm, "applying backlight present quirk\n");
41 }
42 
43 /* Toshiba Satellite P50-C-18C requires T12 delay to be min 800ms
44  * which is 300 ms greater than eDP spec T12 min.
45  */
46 static void quirk_increase_t12_delay(struct drm_i915_private *i915)
47 {
48 	intel_set_quirk(i915, QUIRK_INCREASE_T12_DELAY);
49 	drm_info(&i915->drm, "Applying T12 delay quirk\n");
50 }
51 
52 /*
53  * GeminiLake NUC HDMI outputs require additional off time
54  * this allows the onboard retimer to correctly sync to signal
55  */
56 static void quirk_increase_ddi_disabled_time(struct drm_i915_private *i915)
57 {
58 	intel_set_quirk(i915, QUIRK_INCREASE_DDI_DISABLED_TIME);
59 	drm_info(&i915->drm, "Applying Increase DDI Disabled quirk\n");
60 }
61 
62 static void quirk_no_pps_backlight_power_hook(struct drm_i915_private *i915)
63 {
64 	intel_set_quirk(i915, QUIRK_NO_PPS_BACKLIGHT_POWER_HOOK);
65 	drm_info(&i915->drm, "Applying no pps backlight power quirk\n");
66 }
67 
68 struct intel_quirk {
69 	int device;
70 	int subsystem_vendor;
71 	int subsystem_device;
72 	void (*hook)(struct drm_i915_private *i915);
73 };
74 
75 /* For systems that don't have a meaningful PCI subdevice/subvendor ID */
76 struct intel_dmi_quirk {
77 	void (*hook)(struct drm_i915_private *i915);
78 	const struct dmi_system_id (*dmi_id_list)[];
79 };
80 
81 static int intel_dmi_reverse_brightness(const struct dmi_system_id *id)
82 {
83 	DRM_INFO("Backlight polarity reversed on %s\n", id->ident);
84 	return 1;
85 }
86 
87 static int intel_dmi_no_pps_backlight(const struct dmi_system_id *id)
88 {
89 	DRM_INFO("No pps backlight support on %s\n", id->ident);
90 	return 1;
91 }
92 
93 static const struct intel_dmi_quirk intel_dmi_quirks[] = {
94 	{
95 		.dmi_id_list = &(const struct dmi_system_id[]) {
96 			{
97 				.callback = intel_dmi_reverse_brightness,
98 				.ident = "NCR Corporation",
99 				.matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR Corporation"),
100 					    DMI_MATCH(DMI_PRODUCT_NAME, ""),
101 				},
102 			},
103 			{
104 				.callback = intel_dmi_reverse_brightness,
105 				.ident = "Thundersoft TST178 tablet",
106 				/* DMI strings are too generic, also match on BIOS date */
107 				.matches = {DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
108 					    DMI_EXACT_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
109 					    DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "To be filled by O.E.M."),
110 					    DMI_EXACT_MATCH(DMI_BIOS_DATE, "04/15/2014"),
111 				},
112 			},
113 			{ }  /* terminating entry */
114 		},
115 		.hook = quirk_invert_brightness,
116 	},
117 	{
118 		.dmi_id_list = &(const struct dmi_system_id[]) {
119 			{
120 				.callback = intel_dmi_no_pps_backlight,
121 				.ident = "Google Lillipup sku524294",
122 				.matches = {DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Google"),
123 					    DMI_EXACT_MATCH(DMI_BOARD_NAME, "Lindar"),
124 					    DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "sku524294"),
125 				},
126 			},
127 			{
128 				.callback = intel_dmi_no_pps_backlight,
129 				.ident = "Google Lillipup sku524295",
130 				.matches = {DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Google"),
131 					    DMI_EXACT_MATCH(DMI_BOARD_NAME, "Lindar"),
132 					    DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "sku524295"),
133 				},
134 			},
135 			{ }
136 		},
137 		.hook = quirk_no_pps_backlight_power_hook,
138 	},
139 };
140 
141 static struct intel_quirk intel_quirks[] = {
142 	/* Lenovo U160 cannot use SSC on LVDS */
143 	{ 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable },
144 
145 	/* Sony Vaio Y cannot use SSC on LVDS */
146 	{ 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable },
147 
148 	/* Acer Aspire 5734Z must invert backlight brightness */
149 	{ 0x2a42, 0x1025, 0x0459, quirk_invert_brightness },
150 
151 	/* Acer/eMachines G725 */
152 	{ 0x2a42, 0x1025, 0x0210, quirk_invert_brightness },
153 
154 	/* Acer/eMachines e725 */
155 	{ 0x2a42, 0x1025, 0x0212, quirk_invert_brightness },
156 
157 	/* Acer/Packard Bell NCL20 */
158 	{ 0x2a42, 0x1025, 0x034b, quirk_invert_brightness },
159 
160 	/* Acer Aspire 4736Z */
161 	{ 0x2a42, 0x1025, 0x0260, quirk_invert_brightness },
162 
163 	/* Acer Aspire 5336 */
164 	{ 0x2a42, 0x1025, 0x048a, quirk_invert_brightness },
165 
166 	/* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */
167 	{ 0x0a06, 0x1025, 0x0a11, quirk_backlight_present },
168 
169 	/* Acer C720 Chromebook (Core i3 4005U) */
170 	{ 0x0a16, 0x1025, 0x0a11, quirk_backlight_present },
171 
172 	/* Apple Macbook 2,1 (Core 2 T7400) */
173 	{ 0x27a2, 0x8086, 0x7270, quirk_backlight_present },
174 
175 	/* Apple Macbook 4,1 */
176 	{ 0x2a02, 0x106b, 0x00a1, quirk_backlight_present },
177 
178 	/* Toshiba CB35 Chromebook (Celeron 2955U) */
179 	{ 0x0a06, 0x1179, 0x0a88, quirk_backlight_present },
180 
181 	/* HP Chromebook 14 (Celeron 2955U) */
182 	{ 0x0a06, 0x103c, 0x21ed, quirk_backlight_present },
183 
184 	/* Dell Chromebook 11 */
185 	{ 0x0a06, 0x1028, 0x0a35, quirk_backlight_present },
186 
187 	/* Dell Chromebook 11 (2015 version) */
188 	{ 0x0a16, 0x1028, 0x0a35, quirk_backlight_present },
189 
190 	/* Toshiba Satellite P50-C-18C */
191 	{ 0x191B, 0x1179, 0xF840, quirk_increase_t12_delay },
192 
193 	/* GeminiLake NUC */
194 	{ 0x3185, 0x8086, 0x2072, quirk_increase_ddi_disabled_time },
195 	{ 0x3184, 0x8086, 0x2072, quirk_increase_ddi_disabled_time },
196 	/* ASRock ITX*/
197 	{ 0x3185, 0x1849, 0x2212, quirk_increase_ddi_disabled_time },
198 	{ 0x3184, 0x1849, 0x2212, quirk_increase_ddi_disabled_time },
199 	/* ECS Liva Q2 */
200 	{ 0x3185, 0x1019, 0xa94d, quirk_increase_ddi_disabled_time },
201 	{ 0x3184, 0x1019, 0xa94d, quirk_increase_ddi_disabled_time },
202 };
203 
204 void intel_init_quirks(struct drm_i915_private *i915)
205 {
206 	struct pci_dev *d = to_pci_dev(i915->drm.dev);
207 	int i;
208 
209 	for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
210 		struct intel_quirk *q = &intel_quirks[i];
211 
212 		if (d->device == q->device &&
213 		    (d->subsystem_vendor == q->subsystem_vendor ||
214 		     q->subsystem_vendor == PCI_ANY_ID) &&
215 		    (d->subsystem_device == q->subsystem_device ||
216 		     q->subsystem_device == PCI_ANY_ID))
217 			q->hook(i915);
218 	}
219 	for (i = 0; i < ARRAY_SIZE(intel_dmi_quirks); i++) {
220 		if (dmi_check_system(*intel_dmi_quirks[i].dmi_id_list) != 0)
221 			intel_dmi_quirks[i].hook(i915);
222 	}
223 }
224 
225 bool intel_has_quirk(struct drm_i915_private *i915, enum intel_quirk_id quirk)
226 {
227 	return i915->display.quirks.mask & BIT(quirk);
228 }
229