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 struct intel_quirk { 57 int device; 58 int subsystem_vendor; 59 int subsystem_device; 60 void (*hook)(struct drm_i915_private *i915); 61 }; 62 63 /* For systems that don't have a meaningful PCI subdevice/subvendor ID */ 64 struct intel_dmi_quirk { 65 void (*hook)(struct drm_i915_private *i915); 66 const struct dmi_system_id (*dmi_id_list)[]; 67 }; 68 69 static int intel_dmi_reverse_brightness(const struct dmi_system_id *id) 70 { 71 DRM_INFO("Backlight polarity reversed on %s\n", id->ident); 72 return 1; 73 } 74 75 static const struct intel_dmi_quirk intel_dmi_quirks[] = { 76 { 77 .dmi_id_list = &(const struct dmi_system_id[]) { 78 { 79 .callback = intel_dmi_reverse_brightness, 80 .ident = "NCR Corporation", 81 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR Corporation"), 82 DMI_MATCH(DMI_PRODUCT_NAME, ""), 83 }, 84 }, 85 { 86 .callback = intel_dmi_reverse_brightness, 87 .ident = "Thundersoft TST178 tablet", 88 /* DMI strings are too generic, also match on BIOS date */ 89 .matches = {DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"), 90 DMI_EXACT_MATCH(DMI_BOARD_NAME, "Aptio CRB"), 91 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "To be filled by O.E.M."), 92 DMI_EXACT_MATCH(DMI_BIOS_DATE, "04/15/2014"), 93 }, 94 }, 95 { } /* terminating entry */ 96 }, 97 .hook = quirk_invert_brightness, 98 }, 99 }; 100 101 static struct intel_quirk intel_quirks[] = { 102 /* Lenovo U160 cannot use SSC on LVDS */ 103 { 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable }, 104 105 /* Sony Vaio Y cannot use SSC on LVDS */ 106 { 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable }, 107 108 /* Acer Aspire 5734Z must invert backlight brightness */ 109 { 0x2a42, 0x1025, 0x0459, quirk_invert_brightness }, 110 111 /* Acer/eMachines G725 */ 112 { 0x2a42, 0x1025, 0x0210, quirk_invert_brightness }, 113 114 /* Acer/eMachines e725 */ 115 { 0x2a42, 0x1025, 0x0212, quirk_invert_brightness }, 116 117 /* Acer/Packard Bell NCL20 */ 118 { 0x2a42, 0x1025, 0x034b, quirk_invert_brightness }, 119 120 /* Acer Aspire 4736Z */ 121 { 0x2a42, 0x1025, 0x0260, quirk_invert_brightness }, 122 123 /* Acer Aspire 5336 */ 124 { 0x2a42, 0x1025, 0x048a, quirk_invert_brightness }, 125 126 /* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */ 127 { 0x0a06, 0x1025, 0x0a11, quirk_backlight_present }, 128 129 /* Acer C720 Chromebook (Core i3 4005U) */ 130 { 0x0a16, 0x1025, 0x0a11, quirk_backlight_present }, 131 132 /* Apple Macbook 2,1 (Core 2 T7400) */ 133 { 0x27a2, 0x8086, 0x7270, quirk_backlight_present }, 134 135 /* Apple Macbook 4,1 */ 136 { 0x2a02, 0x106b, 0x00a1, quirk_backlight_present }, 137 138 /* Toshiba CB35 Chromebook (Celeron 2955U) */ 139 { 0x0a06, 0x1179, 0x0a88, quirk_backlight_present }, 140 141 /* HP Chromebook 14 (Celeron 2955U) */ 142 { 0x0a06, 0x103c, 0x21ed, quirk_backlight_present }, 143 144 /* Dell Chromebook 11 */ 145 { 0x0a06, 0x1028, 0x0a35, quirk_backlight_present }, 146 147 /* Dell Chromebook 11 (2015 version) */ 148 { 0x0a16, 0x1028, 0x0a35, quirk_backlight_present }, 149 150 /* Toshiba Satellite P50-C-18C */ 151 { 0x191B, 0x1179, 0xF840, quirk_increase_t12_delay }, 152 153 /* GeminiLake NUC */ 154 { 0x3185, 0x8086, 0x2072, quirk_increase_ddi_disabled_time }, 155 { 0x3184, 0x8086, 0x2072, quirk_increase_ddi_disabled_time }, 156 /* ASRock ITX*/ 157 { 0x3185, 0x1849, 0x2212, quirk_increase_ddi_disabled_time }, 158 { 0x3184, 0x1849, 0x2212, quirk_increase_ddi_disabled_time }, 159 }; 160 161 void intel_init_quirks(struct drm_i915_private *i915) 162 { 163 struct pci_dev *d = to_pci_dev(i915->drm.dev); 164 int i; 165 166 for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) { 167 struct intel_quirk *q = &intel_quirks[i]; 168 169 if (d->device == q->device && 170 (d->subsystem_vendor == q->subsystem_vendor || 171 q->subsystem_vendor == PCI_ANY_ID) && 172 (d->subsystem_device == q->subsystem_device || 173 q->subsystem_device == PCI_ANY_ID)) 174 q->hook(i915); 175 } 176 for (i = 0; i < ARRAY_SIZE(intel_dmi_quirks); i++) { 177 if (dmi_check_system(*intel_dmi_quirks[i].dmi_id_list) != 0) 178 intel_dmi_quirks[i].hook(i915); 179 } 180 } 181