1 // SPDX-License-Identifier: MIT
2 /*
3  * Copyright © 2018 Intel Corporation
4  */
5 
6 #include <linux/dmi.h>
7 
8 #include <drm/drm_print.h>
9 
10 #include "intel_display_core.h"
11 #include "intel_display_types.h"
12 #include "intel_quirks.h"
13 
intel_set_quirk(struct intel_display * display,enum intel_quirk_id quirk)14 static void intel_set_quirk(struct intel_display *display, enum intel_quirk_id quirk)
15 {
16 	display->quirks.mask |= BIT(quirk);
17 }
18 
intel_set_dpcd_quirk(struct intel_dp * intel_dp,enum intel_quirk_id quirk)19 static void intel_set_dpcd_quirk(struct intel_dp *intel_dp, enum intel_quirk_id quirk)
20 {
21 	intel_dp->quirks.mask |= BIT(quirk);
22 }
23 
24 /*
25  * Some machines (Lenovo U160) do not work with SSC on LVDS for some reason
26  */
quirk_ssc_force_disable(struct intel_display * display)27 static void quirk_ssc_force_disable(struct intel_display *display)
28 {
29 	intel_set_quirk(display, QUIRK_LVDS_SSC_DISABLE);
30 	drm_info(display->drm, "applying lvds SSC disable quirk\n");
31 }
32 
33 /*
34  * A machine (e.g. Acer Aspire 5734Z) may need to invert the panel backlight
35  * brightness value
36  */
quirk_invert_brightness(struct intel_display * display)37 static void quirk_invert_brightness(struct intel_display *display)
38 {
39 	intel_set_quirk(display, QUIRK_INVERT_BRIGHTNESS);
40 	drm_info(display->drm, "applying inverted panel brightness quirk\n");
41 }
42 
43 /* Some VBT's incorrectly indicate no backlight is present */
quirk_backlight_present(struct intel_display * display)44 static void quirk_backlight_present(struct intel_display *display)
45 {
46 	intel_set_quirk(display, QUIRK_BACKLIGHT_PRESENT);
47 	drm_info(display->drm, "applying backlight present quirk\n");
48 }
49 
50 /* Toshiba Satellite P50-C-18C requires T12 delay to be min 800ms
51  * which is 300 ms greater than eDP spec T12 min.
52  */
quirk_increase_t12_delay(struct intel_display * display)53 static void quirk_increase_t12_delay(struct intel_display *display)
54 {
55 	intel_set_quirk(display, QUIRK_INCREASE_T12_DELAY);
56 	drm_info(display->drm, "Applying T12 delay quirk\n");
57 }
58 
59 /*
60  * GeminiLake NUC HDMI outputs require additional off time
61  * this allows the onboard retimer to correctly sync to signal
62  */
quirk_increase_ddi_disabled_time(struct intel_display * display)63 static void quirk_increase_ddi_disabled_time(struct intel_display *display)
64 {
65 	intel_set_quirk(display, QUIRK_INCREASE_DDI_DISABLED_TIME);
66 	drm_info(display->drm, "Applying Increase DDI Disabled quirk\n");
67 }
68 
quirk_no_pps_backlight_power_hook(struct intel_display * display)69 static void quirk_no_pps_backlight_power_hook(struct intel_display *display)
70 {
71 	intel_set_quirk(display, QUIRK_NO_PPS_BACKLIGHT_POWER_HOOK);
72 	drm_info(display->drm, "Applying no pps backlight power quirk\n");
73 }
74 
quirk_fw_sync_len(struct intel_dp * intel_dp)75 static void quirk_fw_sync_len(struct intel_dp *intel_dp)
76 {
77 	struct intel_display *display = to_intel_display(intel_dp);
78 
79 	intel_set_dpcd_quirk(intel_dp, QUIRK_FW_SYNC_LEN);
80 	drm_info(display->drm, "Applying Fast Wake sync pulse count quirk\n");
81 }
82 
83 struct intel_quirk {
84 	int device;
85 	int subsystem_vendor;
86 	int subsystem_device;
87 	void (*hook)(struct intel_display *display);
88 };
89 
90 struct intel_dpcd_quirk {
91 	int device;
92 	int subsystem_vendor;
93 	int subsystem_device;
94 	u8 sink_oui[3];
95 	u8 sink_device_id[6];
96 	void (*hook)(struct intel_dp *intel_dp);
97 };
98 
99 #define SINK_OUI(first, second, third) { (first), (second), (third) }
100 #define SINK_DEVICE_ID(first, second, third, fourth, fifth, sixth) \
101 	{ (first), (second), (third), (fourth), (fifth), (sixth) }
102 
103 #define SINK_DEVICE_ID_ANY	SINK_DEVICE_ID(0, 0, 0, 0, 0, 0)
104 
105 /* For systems that don't have a meaningful PCI subdevice/subvendor ID */
106 struct intel_dmi_quirk {
107 	void (*hook)(struct intel_display *display);
108 	const struct dmi_system_id (*dmi_id_list)[];
109 };
110 
intel_dmi_reverse_brightness(const struct dmi_system_id * id)111 static int intel_dmi_reverse_brightness(const struct dmi_system_id *id)
112 {
113 	DRM_INFO("Backlight polarity reversed on %s\n", id->ident);
114 	return 1;
115 }
116 
intel_dmi_no_pps_backlight(const struct dmi_system_id * id)117 static int intel_dmi_no_pps_backlight(const struct dmi_system_id *id)
118 {
119 	DRM_INFO("No pps backlight support on %s\n", id->ident);
120 	return 1;
121 }
122 
123 static const struct intel_dmi_quirk intel_dmi_quirks[] = {
124 	{
125 		.dmi_id_list = &(const struct dmi_system_id[]) {
126 			{
127 				.callback = intel_dmi_reverse_brightness,
128 				.ident = "NCR Corporation",
129 				.matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR Corporation"),
130 					    DMI_MATCH(DMI_PRODUCT_NAME, ""),
131 				},
132 			},
133 			{
134 				.callback = intel_dmi_reverse_brightness,
135 				.ident = "Thundersoft TST178 tablet",
136 				/* DMI strings are too generic, also match on BIOS date */
137 				.matches = {DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
138 					    DMI_EXACT_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
139 					    DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "To be filled by O.E.M."),
140 					    DMI_EXACT_MATCH(DMI_BIOS_DATE, "04/15/2014"),
141 				},
142 			},
143 			{ }  /* terminating entry */
144 		},
145 		.hook = quirk_invert_brightness,
146 	},
147 	{
148 		.dmi_id_list = &(const struct dmi_system_id[]) {
149 			{
150 				.callback = intel_dmi_no_pps_backlight,
151 				.ident = "Google Lillipup sku524294",
152 				.matches = {DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Google"),
153 					    DMI_EXACT_MATCH(DMI_BOARD_NAME, "Lindar"),
154 					    DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "sku524294"),
155 				},
156 			},
157 			{
158 				.callback = intel_dmi_no_pps_backlight,
159 				.ident = "Google Lillipup sku524295",
160 				.matches = {DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Google"),
161 					    DMI_EXACT_MATCH(DMI_BOARD_NAME, "Lindar"),
162 					    DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "sku524295"),
163 				},
164 			},
165 			{ }
166 		},
167 		.hook = quirk_no_pps_backlight_power_hook,
168 	},
169 };
170 
171 static struct intel_quirk intel_quirks[] = {
172 	/* Lenovo U160 cannot use SSC on LVDS */
173 	{ 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable },
174 
175 	/* Sony Vaio Y cannot use SSC on LVDS */
176 	{ 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable },
177 
178 	/* Acer Aspire 5734Z must invert backlight brightness */
179 	{ 0x2a42, 0x1025, 0x0459, quirk_invert_brightness },
180 
181 	/* Acer/eMachines G725 */
182 	{ 0x2a42, 0x1025, 0x0210, quirk_invert_brightness },
183 
184 	/* Acer/eMachines e725 */
185 	{ 0x2a42, 0x1025, 0x0212, quirk_invert_brightness },
186 
187 	/* Acer/Packard Bell NCL20 */
188 	{ 0x2a42, 0x1025, 0x034b, quirk_invert_brightness },
189 
190 	/* Acer Aspire 4736Z */
191 	{ 0x2a42, 0x1025, 0x0260, quirk_invert_brightness },
192 
193 	/* Acer Aspire 5336 */
194 	{ 0x2a42, 0x1025, 0x048a, quirk_invert_brightness },
195 
196 	/* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */
197 	{ 0x0a06, 0x1025, 0x0a11, quirk_backlight_present },
198 
199 	/* Acer C720 Chromebook (Core i3 4005U) */
200 	{ 0x0a16, 0x1025, 0x0a11, quirk_backlight_present },
201 
202 	/* Apple Macbook 2,1 (Core 2 T7400) */
203 	{ 0x27a2, 0x8086, 0x7270, quirk_backlight_present },
204 
205 	/* Apple Macbook 4,1 */
206 	{ 0x2a02, 0x106b, 0x00a1, quirk_backlight_present },
207 
208 	/* Toshiba CB35 Chromebook (Celeron 2955U) */
209 	{ 0x0a06, 0x1179, 0x0a88, quirk_backlight_present },
210 
211 	/* HP Chromebook 14 (Celeron 2955U) */
212 	{ 0x0a06, 0x103c, 0x21ed, quirk_backlight_present },
213 
214 	/* Dell Chromebook 11 */
215 	{ 0x0a06, 0x1028, 0x0a35, quirk_backlight_present },
216 
217 	/* Dell Chromebook 11 (2015 version) */
218 	{ 0x0a16, 0x1028, 0x0a35, quirk_backlight_present },
219 
220 	/* Toshiba Satellite P50-C-18C */
221 	{ 0x191B, 0x1179, 0xF840, quirk_increase_t12_delay },
222 
223 	/* GeminiLake NUC */
224 	{ 0x3185, 0x8086, 0x2072, quirk_increase_ddi_disabled_time },
225 	{ 0x3184, 0x8086, 0x2072, quirk_increase_ddi_disabled_time },
226 	/* ASRock ITX*/
227 	{ 0x3185, 0x1849, 0x2212, quirk_increase_ddi_disabled_time },
228 	{ 0x3184, 0x1849, 0x2212, quirk_increase_ddi_disabled_time },
229 	/* ECS Liva Q2 */
230 	{ 0x3185, 0x1019, 0xa94d, quirk_increase_ddi_disabled_time },
231 	{ 0x3184, 0x1019, 0xa94d, quirk_increase_ddi_disabled_time },
232 	/* HP Notebook - 14-r206nv */
233 	{ 0x0f31, 0x103c, 0x220f, quirk_invert_brightness },
234 };
235 
236 static const struct intel_dpcd_quirk intel_dpcd_quirks[] = {
237 	/* Dell Precision 5490 */
238 	{
239 		.device = 0x7d55,
240 		.subsystem_vendor = 0x1028,
241 		.subsystem_device = 0x0cc7,
242 		.sink_oui = SINK_OUI(0x38, 0xec, 0x11),
243 		.hook = quirk_fw_sync_len,
244 	},
245 
246 };
247 
intel_init_quirks(struct intel_display * display)248 void intel_init_quirks(struct intel_display *display)
249 {
250 	struct pci_dev *d = to_pci_dev(display->drm->dev);
251 	int i;
252 
253 	for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
254 		struct intel_quirk *q = &intel_quirks[i];
255 
256 		if (d->device == q->device &&
257 		    (d->subsystem_vendor == q->subsystem_vendor ||
258 		     q->subsystem_vendor == PCI_ANY_ID) &&
259 		    (d->subsystem_device == q->subsystem_device ||
260 		     q->subsystem_device == PCI_ANY_ID))
261 			q->hook(display);
262 	}
263 	for (i = 0; i < ARRAY_SIZE(intel_dmi_quirks); i++) {
264 		if (dmi_check_system(*intel_dmi_quirks[i].dmi_id_list) != 0)
265 			intel_dmi_quirks[i].hook(display);
266 	}
267 }
268 
intel_init_dpcd_quirks(struct intel_dp * intel_dp,const struct drm_dp_dpcd_ident * ident)269 void intel_init_dpcd_quirks(struct intel_dp *intel_dp,
270 			    const struct drm_dp_dpcd_ident *ident)
271 {
272 	struct intel_display *display = to_intel_display(intel_dp);
273 	struct pci_dev *d = to_pci_dev(display->drm->dev);
274 	int i;
275 
276 	for (i = 0; i < ARRAY_SIZE(intel_dpcd_quirks); i++) {
277 		const struct intel_dpcd_quirk *q = &intel_dpcd_quirks[i];
278 
279 		if (d->device == q->device &&
280 		    (d->subsystem_vendor == q->subsystem_vendor ||
281 		     q->subsystem_vendor == PCI_ANY_ID) &&
282 		    (d->subsystem_device == q->subsystem_device ||
283 		     q->subsystem_device == PCI_ANY_ID) &&
284 		    !memcmp(q->sink_oui, ident->oui, sizeof(ident->oui)) &&
285 		    (!memcmp(q->sink_device_id, ident->device_id,
286 			    sizeof(ident->device_id)) ||
287 		     mem_is_zero(q->sink_device_id, sizeof(q->sink_device_id))))
288 			q->hook(intel_dp);
289 	}
290 }
291 
intel_has_quirk(struct intel_display * display,enum intel_quirk_id quirk)292 bool intel_has_quirk(struct intel_display *display, enum intel_quirk_id quirk)
293 {
294 	return display->quirks.mask & BIT(quirk);
295 }
296 
intel_has_dpcd_quirk(struct intel_dp * intel_dp,enum intel_quirk_id quirk)297 bool intel_has_dpcd_quirk(struct intel_dp *intel_dp, enum intel_quirk_id quirk)
298 {
299 	return intel_dp->quirks.mask & BIT(quirk);
300 }
301