LXR linux/drivers/gpu/drm/i915/display/intel

   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 */
  14static 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 */
  24static 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 */
  31static 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 */
  40static 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 */
  50static 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
  56struct 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 */
  64struct intel_dmi_quirk {
  65        void (*hook)(struct drm_i915_private *i915);
  66        const struct dmi_system_id (*dmi_id_list)[];
  67};
  68
  69static 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
  75static 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
 101static 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
 161void 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