drivers/gpu/drm/i915/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_drv.h"
   9
  10 /*
  11  * Some machines (Lenovo U160) do not work with SSC on LVDS for some reason
  12  */
  13 static void quirk_ssc_force_disable(struct drm_i915_private *i915)
  14 {
  15         i915->quirks |= QUIRK_LVDS_SSC_DISABLE;
  16         DRM_INFO("applying lvds SSC disable quirk\n");
  17 }
  18
  19 /*
  20  * A machine (e.g. Acer Aspire 5734Z) may need to invert the panel backlight
  21  * brightness value
  22  */
  23 static void quirk_invert_brightness(struct drm_i915_private *i915)
  24 {
  25         i915->quirks |= QUIRK_INVERT_BRIGHTNESS;
  26         DRM_INFO("applying inverted panel brightness quirk\n");
  27 }
  28
  29 /* Some VBT's incorrectly indicate no backlight is present */
  30 static void quirk_backlight_present(struct drm_i915_private *i915)
  31 {
  32         i915->quirks |= QUIRK_BACKLIGHT_PRESENT;
  33         DRM_INFO("applying backlight present quirk\n");
  34 }
  35
  36 /* Toshiba Satellite P50-C-18C requires T12 delay to be min 800ms
  37  * which is 300 ms greater than eDP spec T12 min.
  38  */
  39 static void quirk_increase_t12_delay(struct drm_i915_private *i915)
  40 {
  41         i915->quirks |= QUIRK_INCREASE_T12_DELAY;
  42         DRM_INFO("Applying T12 delay quirk\n");
  43 }
  44
  45 /*
  46  * GeminiLake NUC HDMI outputs require additional off time
  47  * this allows the onboard retimer to correctly sync to signal
  48  */
  49 static void quirk_increase_ddi_disabled_time(struct drm_i915_private *i915)
  50 {
  51         i915->quirks |= QUIRK_INCREASE_DDI_DISABLED_TIME;
  52         DRM_INFO("Applying Increase DDI Disabled quirk\n");
  53 }
  54
  55 struct intel_quirk {
  56         int device;
  57         int subsystem_vendor;
  58         int subsystem_device;
  59         void (*hook)(struct drm_i915_private *i915);
  60 };
  61
  62 /* For systems that don't have a meaningful PCI subdevice/subvendor ID */
  63 struct intel_dmi_quirk {
  64         void (*hook)(struct drm_i915_private *i915);
  65         const struct dmi_system_id (*dmi_id_list)[];
  66 };
  67
  68 static int intel_dmi_reverse_brightness(const struct dmi_system_id *id)
  69 {
  70         DRM_INFO("Backlight polarity reversed on %s\n", id->ident);
  71         return 1;
  72 }
  73
  74 static const struct intel_dmi_quirk intel_dmi_quirks[] = {
  75         {
  76                 .dmi_id_list = &(const struct dmi_system_id[]) {
  77                         {
  78                                 .callback = intel_dmi_reverse_brightness,
  79                                 .ident = "NCR Corporation",
  80                                 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR Corporation"),
  81                                             DMI_MATCH(DMI_PRODUCT_NAME, ""),
  82                                 },
  83                         },
  84                         { }  /* terminating entry */
  85                 },
  86                 .hook = quirk_invert_brightness,
  87         },
  88 };
  89
  90 static struct intel_quirk intel_quirks[] = {
  91         /* Lenovo U160 cannot use SSC on LVDS */
  92         { 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable },
  93
  94         /* Sony Vaio Y cannot use SSC on LVDS */
  95         { 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable },
  96
  97         /* Acer Aspire 5734Z must invert backlight brightness */
  98         { 0x2a42, 0x1025, 0x0459, quirk_invert_brightness },
  99
 100         /* Acer/eMachines G725 */
 101         { 0x2a42, 0x1025, 0x0210, quirk_invert_brightness },
 102
 103         /* Acer/eMachines e725 */
 104         { 0x2a42, 0x1025, 0x0212, quirk_invert_brightness },
 105
 106         /* Acer/Packard Bell NCL20 */
 107         { 0x2a42, 0x1025, 0x034b, quirk_invert_brightness },
 108
 109         /* Acer Aspire 4736Z */
 110         { 0x2a42, 0x1025, 0x0260, quirk_invert_brightness },
 111
 112         /* Acer Aspire 5336 */
 113         { 0x2a42, 0x1025, 0x048a, quirk_invert_brightness },
 114
 115         /* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */
 116         { 0x0a06, 0x1025, 0x0a11, quirk_backlight_present },
 117
 118         /* Acer C720 Chromebook (Core i3 4005U) */
 119         { 0x0a16, 0x1025, 0x0a11, quirk_backlight_present },
 120
 121         /* Apple Macbook 2,1 (Core 2 T7400) */
 122         { 0x27a2, 0x8086, 0x7270, quirk_backlight_present },
 123
 124         /* Apple Macbook 4,1 */
 125         { 0x2a02, 0x106b, 0x00a1, quirk_backlight_present },
 126
 127         /* Toshiba CB35 Chromebook (Celeron 2955U) */
 128         { 0x0a06, 0x1179, 0x0a88, quirk_backlight_present },
 129
 130         /* HP Chromebook 14 (Celeron 2955U) */
 131         { 0x0a06, 0x103c, 0x21ed, quirk_backlight_present },
 132
 133         /* Dell Chromebook 11 */
 134         { 0x0a06, 0x1028, 0x0a35, quirk_backlight_present },
 135
 136         /* Dell Chromebook 11 (2015 version) */
 137         { 0x0a16, 0x1028, 0x0a35, quirk_backlight_present },
 138
 139         /* Toshiba Satellite P50-C-18C */
 140         { 0x191B, 0x1179, 0xF840, quirk_increase_t12_delay },
 141
 142         /* GeminiLake NUC */
 143         { 0x3185, 0x8086, 0x2072, quirk_increase_ddi_disabled_time },
 144         { 0x3184, 0x8086, 0x2072, quirk_increase_ddi_disabled_time },
 145         /* ASRock ITX*/
 146         { 0x3185, 0x1849, 0x2212, quirk_increase_ddi_disabled_time },
 147         { 0x3184, 0x1849, 0x2212, quirk_increase_ddi_disabled_time },
 148 };
 149
 150 void intel_init_quirks(struct drm_i915_private *i915)
 151 {
 152         struct pci_dev *d = i915->drm.pdev;
 153         int i;
 154
 155         for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
 156                 struct intel_quirk *q = &intel_quirks[i];
 157
 158                 if (d->device == q->device &&
 159                     (d->subsystem_vendor == q->subsystem_vendor ||
 160                      q->subsystem_vendor == PCI_ANY_ID) &&
 161                     (d->subsystem_device == q->subsystem_device ||
 162                      q->subsystem_device == PCI_ANY_ID))
 163                         q->hook(i915);
 164         }
 165         for (i = 0; i < ARRAY_SIZE(intel_dmi_quirks); i++) {
 166                 if (dmi_check_system(*intel_dmi_quirks[i].dmi_id_list) != 0)
 167                         intel_dmi_quirks[i].hook(i915);
 168         }
 169 }