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 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 }; 110 111 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 } 116 117 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 }; 247 248 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 } 268 269 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 } 291 292 bool intel_has_quirk(struct intel_display *display, enum intel_quirk_id quirk) 293 { 294 return display->quirks.mask & BIT(quirk); 295 } 296 297 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