1// SPDX-License-Identifier: MIT
  2/*
  3 * Copyright © 2018 Intel Corporation
  4 */
  5
  6#include <linux/dmi.h>
  7
  8#include "i915_drv.h"
  9#include "intel_display_types.h"
 10#include "intel_quirks.h"
 11
 12static void intel_set_quirk(struct intel_display *display, enum intel_quirk_id quirk)
 13{
 14	display->quirks.mask |= BIT(quirk);
 15}
 16
 17static void intel_set_dpcd_quirk(struct intel_dp *intel_dp, enum intel_quirk_id quirk)
 18{
 19	intel_dp->quirks.mask |= BIT(quirk);
 20}
 21
 22/*
 23 * Some machines (Lenovo U160) do not work with SSC on LVDS for some reason
 24 */
 25static void quirk_ssc_force_disable(struct intel_display *display)
 26{
 27	intel_set_quirk(display, QUIRK_LVDS_SSC_DISABLE);
 28	drm_info(display->drm, "applying lvds SSC disable quirk\n");
 29}
 30
 31/*
 32 * A machine (e.g. Acer Aspire 5734Z) may need to invert the panel backlight
 33 * brightness value
 34 */
 35static void quirk_invert_brightness(struct intel_display *display)
 36{
 37	intel_set_quirk(display, QUIRK_INVERT_BRIGHTNESS);
 38	drm_info(display->drm, "applying inverted panel brightness quirk\n");
 39}
 40
 41/* Some VBT's incorrectly indicate no backlight is present */
 42static void quirk_backlight_present(struct intel_display *display)
 43{
 44	intel_set_quirk(display, QUIRK_BACKLIGHT_PRESENT);
 45	drm_info(display->drm, "applying backlight present quirk\n");
 46}
 47
 48/* Toshiba Satellite P50-C-18C requires T12 delay to be min 800ms
 49 * which is 300 ms greater than eDP spec T12 min.
 50 */
 51static void quirk_increase_t12_delay(struct intel_display *display)
 52{
 53	intel_set_quirk(display, QUIRK_INCREASE_T12_DELAY);
 54	drm_info(display->drm, "Applying T12 delay quirk\n");
 55}
 56
 57/*
 58 * GeminiLake NUC HDMI outputs require additional off time
 59 * this allows the onboard retimer to correctly sync to signal
 60 */
 61static void quirk_increase_ddi_disabled_time(struct intel_display *display)
 62{
 63	intel_set_quirk(display, QUIRK_INCREASE_DDI_DISABLED_TIME);
 64	drm_info(display->drm, "Applying Increase DDI Disabled quirk\n");
 65}
 66
 67static void quirk_no_pps_backlight_power_hook(struct intel_display *display)
 68{
 69	intel_set_quirk(display, QUIRK_NO_PPS_BACKLIGHT_POWER_HOOK);
 70	drm_info(display->drm, "Applying no pps backlight power quirk\n");
 71}
 72
 73static void quirk_fw_sync_len(struct intel_dp *intel_dp)
 74{
 75	struct intel_display *display = to_intel_display(intel_dp);
 76
 77	intel_set_dpcd_quirk(intel_dp, QUIRK_FW_SYNC_LEN);
 78	drm_info(display->drm, "Applying Fast Wake sync pulse count quirk\n");
 79}
 80
 81struct intel_quirk {
 82	int device;
 83	int subsystem_vendor;
 84	int subsystem_device;
 85	void (*hook)(struct intel_display *display);
 86};
 87
 88struct intel_dpcd_quirk {
 89	int device;
 90	int subsystem_vendor;
 91	int subsystem_device;
 92	u8 sink_oui[3];
 93	u8 sink_device_id[6];
 94	void (*hook)(struct intel_dp *intel_dp);
 95};
 96
 97#define SINK_OUI(first, second, third) { (first), (second), (third) }
 98#define SINK_DEVICE_ID(first, second, third, fourth, fifth, sixth) \
 99	{ (first), (second), (third), (fourth), (fifth), (sixth) }
100
101#define SINK_DEVICE_ID_ANY	SINK_DEVICE_ID(0, 0, 0, 0, 0, 0)
102
103/* For systems that don't have a meaningful PCI subdevice/subvendor ID */
104struct intel_dmi_quirk {
105	void (*hook)(struct intel_display *display);
106	const struct dmi_system_id (*dmi_id_list)[];
107};
108
109static int intel_dmi_reverse_brightness(const struct dmi_system_id *id)
110{
111	DRM_INFO("Backlight polarity reversed on %s\n", id->ident);
112	return 1;
113}
114
115static int intel_dmi_no_pps_backlight(const struct dmi_system_id *id)
116{
117	DRM_INFO("No pps backlight support on %s\n", id->ident);
118	return 1;
119}
120
121static const struct intel_dmi_quirk intel_dmi_quirks[] = {
122	{
123		.dmi_id_list = &(const struct dmi_system_id[]) {
124			{
125				.callback = intel_dmi_reverse_brightness,
126				.ident = "NCR Corporation",
127				.matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR Corporation"),
128					    DMI_MATCH(DMI_PRODUCT_NAME, ""),
129				},
130			},
131			{
132				.callback = intel_dmi_reverse_brightness,
133				.ident = "Thundersoft TST178 tablet",
134				/* DMI strings are too generic, also match on BIOS date */
135				.matches = {DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
136					    DMI_EXACT_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
137					    DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "To be filled by O.E.M."),
138					    DMI_EXACT_MATCH(DMI_BIOS_DATE, "04/15/2014"),
139				},
140			},
141			{ }  /* terminating entry */
142		},
143		.hook = quirk_invert_brightness,
144	},
145	{
146		.dmi_id_list = &(const struct dmi_system_id[]) {
147			{
148				.callback = intel_dmi_no_pps_backlight,
149				.ident = "Google Lillipup sku524294",
150				.matches = {DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Google"),
151					    DMI_EXACT_MATCH(DMI_BOARD_NAME, "Lindar"),
152					    DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "sku524294"),
153				},
154			},
155			{
156				.callback = intel_dmi_no_pps_backlight,
157				.ident = "Google Lillipup sku524295",
158				.matches = {DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Google"),
159					    DMI_EXACT_MATCH(DMI_BOARD_NAME, "Lindar"),
160					    DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "sku524295"),
161				},
162			},
163			{ }
164		},
165		.hook = quirk_no_pps_backlight_power_hook,
166	},
167};
168
169static struct intel_quirk intel_quirks[] = {
170	/* Lenovo U160 cannot use SSC on LVDS */
171	{ 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable },
172
173	/* Sony Vaio Y cannot use SSC on LVDS */
174	{ 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable },
175
176	/* Acer Aspire 5734Z must invert backlight brightness */
177	{ 0x2a42, 0x1025, 0x0459, quirk_invert_brightness },
178
179	/* Acer/eMachines G725 */
180	{ 0x2a42, 0x1025, 0x0210, quirk_invert_brightness },
181
182	/* Acer/eMachines e725 */
183	{ 0x2a42, 0x1025, 0x0212, quirk_invert_brightness },
184
185	/* Acer/Packard Bell NCL20 */
186	{ 0x2a42, 0x1025, 0x034b, quirk_invert_brightness },
187
188	/* Acer Aspire 4736Z */
189	{ 0x2a42, 0x1025, 0x0260, quirk_invert_brightness },
190
191	/* Acer Aspire 5336 */
192	{ 0x2a42, 0x1025, 0x048a, quirk_invert_brightness },
193
194	/* Acer C720 and C720P Chromebooks (Celeron 2955U) have backlights */
195	{ 0x0a06, 0x1025, 0x0a11, quirk_backlight_present },
196
197	/* Acer C720 Chromebook (Core i3 4005U) */
198	{ 0x0a16, 0x1025, 0x0a11, quirk_backlight_present },
199
200	/* Apple Macbook 2,1 (Core 2 T7400) */
201	{ 0x27a2, 0x8086, 0x7270, quirk_backlight_present },
202
203	/* Apple Macbook 4,1 */
204	{ 0x2a02, 0x106b, 0x00a1, quirk_backlight_present },
205
206	/* Toshiba CB35 Chromebook (Celeron 2955U) */
207	{ 0x0a06, 0x1179, 0x0a88, quirk_backlight_present },
208
209	/* HP Chromebook 14 (Celeron 2955U) */
210	{ 0x0a06, 0x103c, 0x21ed, quirk_backlight_present },
211
212	/* Dell Chromebook 11 */
213	{ 0x0a06, 0x1028, 0x0a35, quirk_backlight_present },
214
215	/* Dell Chromebook 11 (2015 version) */
216	{ 0x0a16, 0x1028, 0x0a35, quirk_backlight_present },
217
218	/* Toshiba Satellite P50-C-18C */
219	{ 0x191B, 0x1179, 0xF840, quirk_increase_t12_delay },
220
221	/* GeminiLake NUC */
222	{ 0x3185, 0x8086, 0x2072, quirk_increase_ddi_disabled_time },
223	{ 0x3184, 0x8086, 0x2072, quirk_increase_ddi_disabled_time },
224	/* ASRock ITX*/
225	{ 0x3185, 0x1849, 0x2212, quirk_increase_ddi_disabled_time },
226	{ 0x3184, 0x1849, 0x2212, quirk_increase_ddi_disabled_time },
227	/* ECS Liva Q2 */
228	{ 0x3185, 0x1019, 0xa94d, quirk_increase_ddi_disabled_time },
229	{ 0x3184, 0x1019, 0xa94d, quirk_increase_ddi_disabled_time },
230	/* HP Notebook - 14-r206nv */
231	{ 0x0f31, 0x103c, 0x220f, quirk_invert_brightness },
232};
233
234static const struct intel_dpcd_quirk intel_dpcd_quirks[] = {
235	/* Dell Precision 5490 */
236	{
237		.device = 0x7d55,
238		.subsystem_vendor = 0x1028,
239		.subsystem_device = 0x0cc7,
240		.sink_oui = SINK_OUI(0x38, 0xec, 0x11),
241		.hook = quirk_fw_sync_len,
242	},
243
244};
245
246void intel_init_quirks(struct intel_display *display)
247{
248	struct pci_dev *d = to_pci_dev(display->drm->dev);
249	int i;
250
251	for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
252		struct intel_quirk *q = &intel_quirks[i];
253
254		if (d->device == q->device &&
255		    (d->subsystem_vendor == q->subsystem_vendor ||
256		     q->subsystem_vendor == PCI_ANY_ID) &&
257		    (d->subsystem_device == q->subsystem_device ||
258		     q->subsystem_device == PCI_ANY_ID))
259			q->hook(display);
260	}
261	for (i = 0; i < ARRAY_SIZE(intel_dmi_quirks); i++) {
262		if (dmi_check_system(*intel_dmi_quirks[i].dmi_id_list) != 0)
263			intel_dmi_quirks[i].hook(display);
264	}
265}
266
267void intel_init_dpcd_quirks(struct intel_dp *intel_dp,
268			    const struct drm_dp_dpcd_ident *ident)
269{
270	struct intel_display *display = to_intel_display(intel_dp);
271	struct pci_dev *d = to_pci_dev(display->drm->dev);
272	int i;
273
274	for (i = 0; i < ARRAY_SIZE(intel_dpcd_quirks); i++) {
275		const struct intel_dpcd_quirk *q = &intel_dpcd_quirks[i];
276
277		if (d->device == q->device &&
278		    (d->subsystem_vendor == q->subsystem_vendor ||
279		     q->subsystem_vendor == PCI_ANY_ID) &&
280		    (d->subsystem_device == q->subsystem_device ||
281		     q->subsystem_device == PCI_ANY_ID) &&
282		    !memcmp(q->sink_oui, ident->oui, sizeof(ident->oui)) &&
283		    (!memcmp(q->sink_device_id, ident->device_id,
284			    sizeof(ident->device_id)) ||
285		     mem_is_zero(q->sink_device_id, sizeof(q->sink_device_id))))
286			q->hook(intel_dp);
287	}
288}
289
290bool intel_has_quirk(struct intel_display *display, enum intel_quirk_id quirk)
291{
292	return display->quirks.mask & BIT(quirk);
293}
294
295bool intel_has_dpcd_quirk(struct intel_dp *intel_dp, enum intel_quirk_id quirk)
296{
297	return intel_dp->quirks.mask & BIT(quirk);
298}