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 = i915->drm.pdev;
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}