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("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("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("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("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("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                        { }  /* terminating entry */
  86                },
  87                .hook = quirk_invert_brightness,
  88        },
  89};
  90
  91static struct intel_quirk intel_quirks[] = {
  92        /* Lenovo U160 cannot use SSC on LVDS */
  93        { 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable },
  94
  95        /* Sony Vaio Y cannot use SSC on LVDS */
  96        { 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable },
  97
  98        /* Acer Aspire 5734Z must invert backlight brightness */
  99        { 0x2a42, 0x1025, 0x0459, quirk_invert_brightness },
 100
 101        /* Acer/eMachines G725 */
 102        { 0x2a42, 0x1025, 0x0210, quirk_invert_brightness },
 103
 104        /* Acer/eMachines e725 */
 105        { 0x2a42, 0x1025, 0x0212, quirk_invert_brightness },
 106
 107        /* Acer/Packard Bell NCL20 */
 108        { 0x2a42, 0x1025, 0x034b, quirk_invert_brightness },
 109
 110        /* Acer Aspire 4736Z */
 111        { 0x2a42, 0x1025, 0x0260, quirk_invert_brightness },
 112
 113        /* Acer Aspire 5336 */
 114        { 0x2a42, 0x1025, 0x048a, quirk_invert_brightness },
 115
 116        /* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */
 117        { 0x0a06, 0x1025, 0x0a11, quirk_backlight_present },
 118
 119        /* Acer C720 Chromebook (Core i3 4005U) */
 120        { 0x0a16, 0x1025, 0x0a11, quirk_backlight_present },
 121
 122        /* Apple Macbook 2,1 (Core 2 T7400) */
 123        { 0x27a2, 0x8086, 0x7270, quirk_backlight_present },
 124
 125        /* Apple Macbook 4,1 */
 126        { 0x2a02, 0x106b, 0x00a1, quirk_backlight_present },
 127
 128        /* Toshiba CB35 Chromebook (Celeron 2955U) */
 129        { 0x0a06, 0x1179, 0x0a88, quirk_backlight_present },
 130
 131        /* HP Chromebook 14 (Celeron 2955U) */
 132        { 0x0a06, 0x103c, 0x21ed, quirk_backlight_present },
 133
 134        /* Dell Chromebook 11 */
 135        { 0x0a06, 0x1028, 0x0a35, quirk_backlight_present },
 136
 137        /* Dell Chromebook 11 (2015 version) */
 138        { 0x0a16, 0x1028, 0x0a35, quirk_backlight_present },
 139
 140        /* Toshiba Satellite P50-C-18C */
 141        { 0x191B, 0x1179, 0xF840, quirk_increase_t12_delay },
 142
 143        /* GeminiLake NUC */
 144        { 0x3185, 0x8086, 0x2072, quirk_increase_ddi_disabled_time },
 145        { 0x3184, 0x8086, 0x2072, quirk_increase_ddi_disabled_time },
 146        /* ASRock ITX*/
 147        { 0x3185, 0x1849, 0x2212, quirk_increase_ddi_disabled_time },
 148        { 0x3184, 0x1849, 0x2212, quirk_increase_ddi_disabled_time },
 149};
 150
 151void intel_init_quirks(struct drm_i915_private *i915)
 152{
 153        struct pci_dev *d = i915->drm.pdev;
 154        int i;
 155
 156        for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
 157                struct intel_quirk *q = &intel_quirks[i];
 158
 159                if (d->device == q->device &&
 160                    (d->subsystem_vendor == q->subsystem_vendor ||
 161                     q->subsystem_vendor == PCI_ANY_ID) &&
 162                    (d->subsystem_device == q->subsystem_device ||
 163                     q->subsystem_device == PCI_ANY_ID))
 164                        q->hook(i915);
 165        }
 166        for (i = 0; i < ARRAY_SIZE(intel_dmi_quirks); i++) {
 167                if (dmi_check_system(*intel_dmi_quirks[i].dmi_id_list) != 0)
 168                        intel_dmi_quirks[i].hook(i915);
 169        }
 170}
 171