// SPDX-License-Identifier: MIT/* * Copyright 2025 Advanced Micro Devices, Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Authors: AMD * */ #include <linux/dmi.h> #include "amdgpu.h"#include "amdgpu_dm.h"#include "dm_helpers.h" struct amdgpu_dm_quirks {	bool aux_hpd_discon;	bool support_edp0_on_dp1;}; static struct amdgpu_dm_quirks quirk_entries = {	.aux_hpd_discon = false,	.support_edp0_on_dp1 = false}; static int edp0_on_dp1_callback(const struct dmi_system_id *id){	quirk_entries.support_edp0_on_dp1 = true;	return 0;} static int aux_hpd_discon_callback(const struct dmi_system_id *id){	quirk_entries.aux_hpd_discon = true;	return 0;} static const struct dmi_system_id dmi_quirk_table[] = {	{		.callback = aux_hpd_discon_callback,		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "Precision 3660"),		},	},	{		.callback = aux_hpd_discon_callback,		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "Precision 3260"),		},	},	{		.callback = aux_hpd_discon_callback,		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "Precision 3460"),		},	},	{		.callback = aux_hpd_discon_callback,		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex Tower Plus 7010"),		},	},	{		.callback = aux_hpd_discon_callback,		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex Tower 7010"),		},	},	{		.callback = aux_hpd_discon_callback,		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex SFF Plus 7010"),		},	},	{		.callback = aux_hpd_discon_callback,		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex SFF 7010"),		},	},	{		.callback = aux_hpd_discon_callback,		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex Micro Plus 7010"),		},	},	{		.callback = aux_hpd_discon_callback,		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex Micro 7010"),		},	},	{		.callback = edp0_on_dp1_callback,		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "HP"),			DMI_MATCH(DMI_PRODUCT_NAME, "HP Elite mt645 G8 Mobile Thin Client"),		},	},	{		.callback = edp0_on_dp1_callback,		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "HP"),			DMI_MATCH(DMI_PRODUCT_NAME, "HP EliteBook 645 14 inch G11 Notebook PC"),		},	},	{		.callback = edp0_on_dp1_callback,		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "HP"),			DMI_MATCH(DMI_PRODUCT_NAME, "HP EliteBook 665 16 inch G11 Notebook PC"),		},	},	{		.callback = edp0_on_dp1_callback,		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "HP"),			DMI_MATCH(DMI_PRODUCT_NAME, "HP ProBook 445 14 inch G11 Notebook PC"),		},	},	{		.callback = edp0_on_dp1_callback,		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "HP"),			DMI_MATCH(DMI_PRODUCT_NAME, "HP ProBook 465 16 inch G11 Notebook PC"),		},	},	{}	/* TODO: refactor this from a fixed table to a dynamic option */}; void retrieve_dmi_info(struct amdgpu_display_manager *dm){	struct drm_device *dev = dm->ddev;	int dmi_id; 	dm->aux_hpd_discon_quirk = false;	dm->edp0_on_dp1_quirk = false; 	dmi_id = dmi_check_system(dmi_quirk_table); 	if (!dmi_id)		return; 	if (quirk_entries.aux_hpd_discon) {		dm->aux_hpd_discon_quirk = true;		drm_info(dev, "aux_hpd_discon_quirk attached\n");	}	if (quirk_entries.support_edp0_on_dp1) {		dm->edp0_on_dp1_quirk = true;		drm_info(dev, "support_edp0_on_dp1 attached\n");	}}EXPORT_IF_KUNIT(retrieve_dmi_info); struct amdgpu_stutter_quirk {	u16 chip_vendor;	u16 chip_device;	u16 subsys_vendor;	u16 subsys_device;	u8 revision;}; static const struct amdgpu_stutter_quirk amdgpu_stutter_quirk_list[] = {	/* https://bugzilla.kernel.org/show_bug.cgi?id=214417 */	{ 0x1002, 0x15dd, 0x1002, 0x15dd, 0xc8 },	{ 0, 0, 0, 0, 0 },}; bool dm_should_disable_stutter(struct pci_dev *pdev){	const struct amdgpu_stutter_quirk *p = amdgpu_stutter_quirk_list; 	while (p && p->chip_device != 0) {		if (pdev->vendor == p->chip_vendor &&		    pdev->device == p->chip_device &&		    pdev->subsystem_vendor == p->subsys_vendor &&		    pdev->subsystem_device == p->subsys_device &&		    pdev->revision == p->revision) {			return true;		}		++p;	}	return false;}EXPORT_IF_KUNIT(dm_should_disable_stutter);