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}