drivers/gpu/drm/i915/display/intel_quirks.c

   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 }