1 // SPDX-License-Identifier: MIT 2 /* 3 * Copyright © 2018 Intel Corporation 4 */ 5 6 #include <linux/dmi.h> 7 8 #include "intel_display_types.h" 9 #include "intel_quirks.h" 10 11 /* 12 * Some machines (Lenovo U160) do not work with SSC on LVDS for some reason 13 */ 14 static void quirk_ssc_force_disable(struct drm_i915_private *i915) 15 { 16 i915->quirks |= QUIRK_LVDS_SSC_DISABLE; 17 drm_info(&i915->drm, "applying lvds SSC disable quirk\n"); 18 } 19 20 /* 21 * A machine (e.g. Acer Aspire 5734Z) may need to invert the panel backlight 22 * brightness value 23 */ 24 static void quirk_invert_brightness(struct drm_i915_private *i915) 25 { 26 i915->quirks |= QUIRK_INVERT_BRIGHTNESS; 27 drm_info(&i915->drm, "applying inverted panel brightness quirk\n"); 28 } 29 30 /* Some VBT's incorrectly indicate no backlight is present */ 31 static void quirk_backlight_present(struct drm_i915_private *i915) 32 { 33 i915->quirks |= QUIRK_BACKLIGHT_PRESENT; 34 drm_info(&i915->drm, "applying backlight present quirk\n"); 35 } 36 37 /* Toshiba Satellite P50-C-18C requires T12 delay to be min 800ms 38 * which is 300 ms greater than eDP spec T12 min. 39 */ 40 static void quirk_increase_t12_delay(struct drm_i915_private *i915) 41 { 42 i915->quirks |= QUIRK_INCREASE_T12_DELAY; 43 drm_info(&i915->drm, "Applying T12 delay quirk\n"); 44 } 45 46 /* 47 * GeminiLake NUC HDMI outputs require additional off time 48 * this allows the onboard retimer to correctly sync to signal 49 */ 50 static void quirk_increase_ddi_disabled_time(struct drm_i915_private *i915) 51 { 52 i915->quirks |= QUIRK_INCREASE_DDI_DISABLED_TIME; 53 drm_info(&i915->drm, "Applying Increase DDI Disabled quirk\n"); 54 } 55 56 static void quirk_no_pps_backlight_power_hook(struct drm_i915_private *i915) 57 { 58 i915->quirks |= QUIRK_NO_PPS_BACKLIGHT_POWER_HOOK; 59 drm_info(&i915->drm, "Applying no pps backlight power quirk\n"); 60 } 61 62 struct intel_quirk { 63 int device; 64 int subsystem_vendor; 65 int subsystem_device; 66 void (*hook)(struct drm_i915_private *i915); 67 }; 68 69 /* For systems that don't have a meaningful PCI subdevice/subvendor ID */ 70 struct intel_dmi_quirk { 71 void (*hook)(struct drm_i915_private *i915); 72 const struct dmi_system_id (*dmi_id_list)[]; 73 }; 74 75 static int intel_dmi_reverse_brightness(const struct dmi_system_id *id) 76 { 77 DRM_INFO("Backlight polarity reversed on %s\n", id->ident); 78 return 1; 79 } 80 81 static int intel_dmi_no_pps_backlight(const struct dmi_system_id *id) 82 { 83 DRM_INFO("No pps backlight support on %s\n", id->ident); 84 return 1; 85 } 86 87 static const struct intel_dmi_quirk intel_dmi_quirks[] = { 88 { 89 .dmi_id_list = &(const struct dmi_system_id[]) { 90 { 91 .callback = intel_dmi_reverse_brightness, 92 .ident = "NCR Corporation", 93 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR Corporation"), 94 DMI_MATCH(DMI_PRODUCT_NAME, ""), 95 }, 96 }, 97 { 98 .callback = intel_dmi_reverse_brightness, 99 .ident = "Thundersoft TST178 tablet", 100 /* DMI strings are too generic, also match on BIOS date */ 101 .matches = {DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"), 102 DMI_EXACT_MATCH(DMI_BOARD_NAME, "Aptio CRB"), 103 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "To be filled by O.E.M."), 104 DMI_EXACT_MATCH(DMI_BIOS_DATE, "04/15/2014"), 105 }, 106 }, 107 { } /* terminating entry */ 108 }, 109 .hook = quirk_invert_brightness, 110 }, 111 { 112 .dmi_id_list = &(const struct dmi_system_id[]) { 113 { 114 .callback = intel_dmi_no_pps_backlight, 115 .ident = "Google Lillipup sku524294", 116 .matches = {DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Google"), 117 DMI_EXACT_MATCH(DMI_BOARD_NAME, "Lindar"), 118 DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "sku524294"), 119 }, 120 }, 121 { 122 .callback = intel_dmi_no_pps_backlight, 123 .ident = "Google Lillipup sku524295", 124 .matches = {DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Google"), 125 DMI_EXACT_MATCH(DMI_BOARD_NAME, "Lindar"), 126 DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "sku524295"), 127 }, 128 }, 129 { } 130 }, 131 .hook = quirk_no_pps_backlight_power_hook, 132 }, 133 }; 134 135 static struct intel_quirk intel_quirks[] = { 136 /* Lenovo U160 cannot use SSC on LVDS */ 137 { 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable }, 138 139 /* Sony Vaio Y cannot use SSC on LVDS */ 140 { 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable }, 141 142 /* Acer Aspire 5734Z must invert backlight brightness */ 143 { 0x2a42, 0x1025, 0x0459, quirk_invert_brightness }, 144 145 /* Acer/eMachines G725 */ 146 { 0x2a42, 0x1025, 0x0210, quirk_invert_brightness }, 147 148 /* Acer/eMachines e725 */ 149 { 0x2a42, 0x1025, 0x0212, quirk_invert_brightness }, 150 151 /* Acer/Packard Bell NCL20 */ 152 { 0x2a42, 0x1025, 0x034b, quirk_invert_brightness }, 153 154 /* Acer Aspire 4736Z */ 155 { 0x2a42, 0x1025, 0x0260, quirk_invert_brightness }, 156 157 /* Acer Aspire 5336 */ 158 { 0x2a42, 0x1025, 0x048a, quirk_invert_brightness }, 159 160 /* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */ 161 { 0x0a06, 0x1025, 0x0a11, quirk_backlight_present }, 162 163 /* Acer C720 Chromebook (Core i3 4005U) */ 164 { 0x0a16, 0x1025, 0x0a11, quirk_backlight_present }, 165 166 /* Apple Macbook 2,1 (Core 2 T7400) */ 167 { 0x27a2, 0x8086, 0x7270, quirk_backlight_present }, 168 169 /* Apple Macbook 4,1 */ 170 { 0x2a02, 0x106b, 0x00a1, quirk_backlight_present }, 171 172 /* Toshiba CB35 Chromebook (Celeron 2955U) */ 173 { 0x0a06, 0x1179, 0x0a88, quirk_backlight_present }, 174 175 /* HP Chromebook 14 (Celeron 2955U) */ 176 { 0x0a06, 0x103c, 0x21ed, quirk_backlight_present }, 177 178 /* Dell Chromebook 11 */ 179 { 0x0a06, 0x1028, 0x0a35, quirk_backlight_present }, 180 181 /* Dell Chromebook 11 (2015 version) */ 182 { 0x0a16, 0x1028, 0x0a35, quirk_backlight_present }, 183 184 /* Toshiba Satellite P50-C-18C */ 185 { 0x191B, 0x1179, 0xF840, quirk_increase_t12_delay }, 186 187 /* GeminiLake NUC */ 188 { 0x3185, 0x8086, 0x2072, quirk_increase_ddi_disabled_time }, 189 { 0x3184, 0x8086, 0x2072, quirk_increase_ddi_disabled_time }, 190 /* ASRock ITX*/ 191 { 0x3185, 0x1849, 0x2212, quirk_increase_ddi_disabled_time }, 192 { 0x3184, 0x1849, 0x2212, quirk_increase_ddi_disabled_time }, 193 }; 194 195 void intel_init_quirks(struct drm_i915_private *i915) 196 { 197 struct pci_dev *d = to_pci_dev(i915->drm.dev); 198 int i; 199 200 for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) { 201 struct intel_quirk *q = &intel_quirks[i]; 202 203 if (d->device == q->device && 204 (d->subsystem_vendor == q->subsystem_vendor || 205 q->subsystem_vendor == PCI_ANY_ID) && 206 (d->subsystem_device == q->subsystem_device || 207 q->subsystem_device == PCI_ANY_ID)) 208 q->hook(i915); 209 } 210 for (i = 0; i < ARRAY_SIZE(intel_dmi_quirks); i++) { 211 if (dmi_check_system(*intel_dmi_quirks[i].dmi_id_list) != 0) 212 intel_dmi_quirks[i].hook(i915); 213 } 214 } 215