1 // SPDX-License-Identifier: MIT
3 * Copyright © 2018 Intel Corporation
11 * Some machines (Lenovo U160) do not work with SSC on LVDS for some reason
13 static void quirk_ssc_force_disable(struct drm_i915_private *i915)
15 i915->quirks |= QUIRK_LVDS_SSC_DISABLE;
16 DRM_INFO("applying lvds SSC disable quirk\n");
20 * A machine (e.g. Acer Aspire 5734Z) may need to invert the panel backlight
23 static void quirk_invert_brightness(struct drm_i915_private *i915)
25 i915->quirks |= QUIRK_INVERT_BRIGHTNESS;
26 DRM_INFO("applying inverted panel brightness quirk\n");
29 /* Some VBT's incorrectly indicate no backlight is present */
30 static void quirk_backlight_present(struct drm_i915_private *i915)
32 i915->quirks |= QUIRK_BACKLIGHT_PRESENT;
33 DRM_INFO("applying backlight present quirk\n");
36 /* Toshiba Satellite P50-C-18C requires T12 delay to be min 800ms
37 * which is 300 ms greater than eDP spec T12 min.
39 static void quirk_increase_t12_delay(struct drm_i915_private *i915)
41 i915->quirks |= QUIRK_INCREASE_T12_DELAY;
42 DRM_INFO("Applying T12 delay quirk\n");
46 * GeminiLake NUC HDMI outputs require additional off time
47 * this allows the onboard retimer to correctly sync to signal
49 static void quirk_increase_ddi_disabled_time(struct drm_i915_private *i915)
51 i915->quirks |= QUIRK_INCREASE_DDI_DISABLED_TIME;
52 DRM_INFO("Applying Increase DDI Disabled quirk\n");
59 void (*hook)(struct drm_i915_private *i915);
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)[];
68 static int intel_dmi_reverse_brightness(const struct dmi_system_id *id)
70 DRM_INFO("Backlight polarity reversed on %s\n", id->ident);
74 static const struct intel_dmi_quirk intel_dmi_quirks[] = {
76 .dmi_id_list = &(const struct dmi_system_id[]) {
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, ""),
84 { } /* terminating entry */
86 .hook = quirk_invert_brightness,
90 static struct intel_quirk intel_quirks[] = {
91 /* Lenovo U160 cannot use SSC on LVDS */
92 { 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable },
94 /* Sony Vaio Y cannot use SSC on LVDS */
95 { 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable },
97 /* Acer Aspire 5734Z must invert backlight brightness */
98 { 0x2a42, 0x1025, 0x0459, quirk_invert_brightness },
100 /* Acer/eMachines G725 */
101 { 0x2a42, 0x1025, 0x0210, quirk_invert_brightness },
103 /* Acer/eMachines e725 */
104 { 0x2a42, 0x1025, 0x0212, quirk_invert_brightness },
106 /* Acer/Packard Bell NCL20 */
107 { 0x2a42, 0x1025, 0x034b, quirk_invert_brightness },
109 /* Acer Aspire 4736Z */
110 { 0x2a42, 0x1025, 0x0260, quirk_invert_brightness },
112 /* Acer Aspire 5336 */
113 { 0x2a42, 0x1025, 0x048a, quirk_invert_brightness },
115 /* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */
116 { 0x0a06, 0x1025, 0x0a11, quirk_backlight_present },
118 /* Acer C720 Chromebook (Core i3 4005U) */
119 { 0x0a16, 0x1025, 0x0a11, quirk_backlight_present },
121 /* Apple Macbook 2,1 (Core 2 T7400) */
122 { 0x27a2, 0x8086, 0x7270, quirk_backlight_present },
124 /* Apple Macbook 4,1 */
125 { 0x2a02, 0x106b, 0x00a1, quirk_backlight_present },
127 /* Toshiba CB35 Chromebook (Celeron 2955U) */
128 { 0x0a06, 0x1179, 0x0a88, quirk_backlight_present },
130 /* HP Chromebook 14 (Celeron 2955U) */
131 { 0x0a06, 0x103c, 0x21ed, quirk_backlight_present },
133 /* Dell Chromebook 11 */
134 { 0x0a06, 0x1028, 0x0a35, quirk_backlight_present },
136 /* Dell Chromebook 11 (2015 version) */
137 { 0x0a16, 0x1028, 0x0a35, quirk_backlight_present },
139 /* Toshiba Satellite P50-C-18C */
140 { 0x191B, 0x1179, 0xF840, quirk_increase_t12_delay },
143 { 0x3185, 0x8086, 0x2072, quirk_increase_ddi_disabled_time },
144 { 0x3184, 0x8086, 0x2072, quirk_increase_ddi_disabled_time },
146 { 0x3185, 0x1849, 0x2212, quirk_increase_ddi_disabled_time },
147 { 0x3184, 0x1849, 0x2212, quirk_increase_ddi_disabled_time },
150 void intel_init_quirks(struct drm_i915_private *i915)
152 struct pci_dev *d = i915->drm.pdev;
155 for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
156 struct intel_quirk *q = &intel_quirks[i];
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))
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);