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 14 static void intel_set_quirk(struct intel_display *display, enum intel_quirk_id quirk) 15 { 16 display->quirks.mask |= BIT(quirk); 17 } 18 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 */ 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 */ 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 */ 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 */ 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 */ 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 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 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 static void quirk_edp_limit_rate_hbr2(struct intel_display *display) 84 { 85 intel_set_quirk(display, QUIRK_EDP_LIMIT_RATE_HBR2); 86 drm_info(display->drm, "Applying eDP Limit rate to HBR2 quirk\n"); 87 } 88 89 struct intel_quirk { 90 int device; 91 int subsystem_vendor; 92 int subsystem_device; 93 void (*hook)(struct intel_display *display); 94 }; 95 96 struct intel_dpcd_quirk { 97 int device; 98 int subsystem_vendor; 99 int subsystem_device; 100 u8 sink_oui[3]; 101 u8 sink_device_id[6]; 102 void (*hook)(struct intel_dp *intel_dp); 103 }; 104 105 #define SINK_OUI(first, second, third) { (first), (second), (third) } 106 #define SINK_DEVICE_ID(first, second, third, fourth, fifth, sixth) \ 107 { (first), (second), (third), (fourth), (fifth), (sixth) } 108 109 #define SINK_DEVICE_ID_ANY SINK_DEVICE_ID(0, 0, 0, 0, 0, 0) 110 111 /* For systems that don't have a meaningful PCI subdevice/subvendor ID */ 112 struct intel_dmi_quirk { 113 void (*hook)(struct intel_display *display); 114 const struct dmi_system_id (*dmi_id_list)[]; 115 }; 116 117 static int intel_dmi_reverse_brightness(const struct dmi_system_id *id) 118 { 119 DRM_INFO("Backlight polarity reversed on %s\n", id->ident); 120 return 1; 121 } 122 123 static int intel_dmi_no_pps_backlight(const struct dmi_system_id *id) 124 { 125 DRM_INFO("No pps backlight support on %s\n", id->ident); 126 return 1; 127 } 128 129 static const struct intel_dmi_quirk intel_dmi_quirks[] = { 130 { 131 .dmi_id_list = &(const struct dmi_system_id[]) { 132 { 133 .callback = intel_dmi_reverse_brightness, 134 .ident = "NCR Corporation", 135 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR Corporation"), 136 DMI_MATCH(DMI_PRODUCT_NAME, ""), 137 }, 138 }, 139 { 140 .callback = intel_dmi_reverse_brightness, 141 .ident = "Thundersoft TST178 tablet", 142 /* DMI strings are too generic, also match on BIOS date */ 143 .matches = {DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"), 144 DMI_EXACT_MATCH(DMI_BOARD_NAME, "Aptio CRB"), 145 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "To be filled by O.E.M."), 146 DMI_EXACT_MATCH(DMI_BIOS_DATE, "04/15/2014"), 147 }, 148 }, 149 { } /* terminating entry */ 150 }, 151 .hook = quirk_invert_brightness, 152 }, 153 { 154 .dmi_id_list = &(const struct dmi_system_id[]) { 155 { 156 .callback = intel_dmi_no_pps_backlight, 157 .ident = "Google Lillipup sku524294", 158 .matches = {DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Google"), 159 DMI_EXACT_MATCH(DMI_BOARD_NAME, "Lindar"), 160 DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "sku524294"), 161 }, 162 }, 163 { 164 .callback = intel_dmi_no_pps_backlight, 165 .ident = "Google Lillipup sku524295", 166 .matches = {DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Google"), 167 DMI_EXACT_MATCH(DMI_BOARD_NAME, "Lindar"), 168 DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "sku524295"), 169 }, 170 }, 171 { } 172 }, 173 .hook = quirk_no_pps_backlight_power_hook, 174 }, 175 }; 176 177 static struct intel_quirk intel_quirks[] = { 178 /* Lenovo U160 cannot use SSC on LVDS */ 179 { 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable }, 180 181 /* Sony Vaio Y cannot use SSC on LVDS */ 182 { 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable }, 183 184 /* Acer Aspire 5734Z must invert backlight brightness */ 185 { 0x2a42, 0x1025, 0x0459, quirk_invert_brightness }, 186 187 /* Acer/eMachines G725 */ 188 { 0x2a42, 0x1025, 0x0210, quirk_invert_brightness }, 189 190 /* Acer/eMachines e725 */ 191 { 0x2a42, 0x1025, 0x0212, quirk_invert_brightness }, 192 193 /* Acer/Packard Bell NCL20 */ 194 { 0x2a42, 0x1025, 0x034b, quirk_invert_brightness }, 195 196 /* Acer Aspire 4736Z */ 197 { 0x2a42, 0x1025, 0x0260, quirk_invert_brightness }, 198 199 /* Acer Aspire 5336 */ 200 { 0x2a42, 0x1025, 0x048a, quirk_invert_brightness }, 201 202 /* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */ 203 { 0x0a06, 0x1025, 0x0a11, quirk_backlight_present }, 204 205 /* Acer C720 Chromebook (Core i3 4005U) */ 206 { 0x0a16, 0x1025, 0x0a11, quirk_backlight_present }, 207 208 /* Apple Macbook 2,1 (Core 2 T7400) */ 209 { 0x27a2, 0x8086, 0x7270, quirk_backlight_present }, 210 211 /* Apple Macbook 4,1 */ 212 { 0x2a02, 0x106b, 0x00a1, quirk_backlight_present }, 213 214 /* Toshiba CB35 Chromebook (Celeron 2955U) */ 215 { 0x0a06, 0x1179, 0x0a88, quirk_backlight_present }, 216 217 /* HP Chromebook 14 (Celeron 2955U) */ 218 { 0x0a06, 0x103c, 0x21ed, quirk_backlight_present }, 219 220 /* Dell Chromebook 11 */ 221 { 0x0a06, 0x1028, 0x0a35, quirk_backlight_present }, 222 223 /* Dell Chromebook 11 (2015 version) */ 224 { 0x0a16, 0x1028, 0x0a35, quirk_backlight_present }, 225 226 /* Toshiba Satellite P50-C-18C */ 227 { 0x191B, 0x1179, 0xF840, quirk_increase_t12_delay }, 228 229 /* GeminiLake NUC */ 230 { 0x3185, 0x8086, 0x2072, quirk_increase_ddi_disabled_time }, 231 { 0x3184, 0x8086, 0x2072, quirk_increase_ddi_disabled_time }, 232 /* ASRock ITX*/ 233 { 0x3185, 0x1849, 0x2212, quirk_increase_ddi_disabled_time }, 234 { 0x3184, 0x1849, 0x2212, quirk_increase_ddi_disabled_time }, 235 /* ECS Liva Q2 */ 236 { 0x3185, 0x1019, 0xa94d, quirk_increase_ddi_disabled_time }, 237 { 0x3184, 0x1019, 0xa94d, quirk_increase_ddi_disabled_time }, 238 /* HP Notebook - 14-r206nv */ 239 { 0x0f31, 0x103c, 0x220f, quirk_invert_brightness }, 240 241 /* Dell XPS 13 7390 2-in-1 */ 242 { 0x8a12, 0x1028, 0x08b0, quirk_edp_limit_rate_hbr2 }, 243 }; 244 245 static const struct intel_dpcd_quirk intel_dpcd_quirks[] = { 246 /* Dell Precision 5490 */ 247 { 248 .device = 0x7d55, 249 .subsystem_vendor = 0x1028, 250 .subsystem_device = 0x0cc7, 251 .sink_oui = SINK_OUI(0x38, 0xec, 0x11), 252 .hook = quirk_fw_sync_len, 253 }, 254 255 }; 256 257 void intel_init_quirks(struct intel_display *display) 258 { 259 struct pci_dev *d = to_pci_dev(display->drm->dev); 260 int i; 261 262 for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) { 263 struct intel_quirk *q = &intel_quirks[i]; 264 265 if (d->device == q->device && 266 (d->subsystem_vendor == q->subsystem_vendor || 267 q->subsystem_vendor == PCI_ANY_ID) && 268 (d->subsystem_device == q->subsystem_device || 269 q->subsystem_device == PCI_ANY_ID)) 270 q->hook(display); 271 } 272 for (i = 0; i < ARRAY_SIZE(intel_dmi_quirks); i++) { 273 if (dmi_check_system(*intel_dmi_quirks[i].dmi_id_list) != 0) 274 intel_dmi_quirks[i].hook(display); 275 } 276 } 277 278 void intel_init_dpcd_quirks(struct intel_dp *intel_dp, 279 const struct drm_dp_dpcd_ident *ident) 280 { 281 struct intel_display *display = to_intel_display(intel_dp); 282 struct pci_dev *d = to_pci_dev(display->drm->dev); 283 int i; 284 285 for (i = 0; i < ARRAY_SIZE(intel_dpcd_quirks); i++) { 286 const struct intel_dpcd_quirk *q = &intel_dpcd_quirks[i]; 287 288 if (d->device == q->device && 289 (d->subsystem_vendor == q->subsystem_vendor || 290 q->subsystem_vendor == PCI_ANY_ID) && 291 (d->subsystem_device == q->subsystem_device || 292 q->subsystem_device == PCI_ANY_ID) && 293 !memcmp(q->sink_oui, ident->oui, sizeof(ident->oui)) && 294 (!memcmp(q->sink_device_id, ident->device_id, 295 sizeof(ident->device_id)) || 296 mem_is_zero(q->sink_device_id, sizeof(q->sink_device_id)))) 297 q->hook(intel_dp); 298 } 299 } 300 301 bool intel_has_quirk(struct intel_display *display, enum intel_quirk_id quirk) 302 { 303 return display->quirks.mask & BIT(quirk); 304 } 305 306 bool intel_has_dpcd_quirk(struct intel_dp *intel_dp, enum intel_quirk_id quirk) 307 { 308 return intel_dp->quirks.mask & BIT(quirk); 309 } 310