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