1 // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
2 // Copyright(c) 2021 Intel Corporation.
3 
4 /*
5  * Soundwire DMI quirks
6  */
7 
8 #include <linux/device.h>
9 #include <linux/dmi.h>
10 #include <linux/soundwire/sdw.h>
11 #include "bus.h"
12 
13 struct adr_remap {
14 	u64 adr;
15 	u64 remapped_adr;
16 };
17 
18 /*
19  * Some TigerLake devices based on an initial Intel BIOS do not expose
20  * the correct _ADR in the DSDT.
21  * Remap the bad _ADR values to the ones reported by hardware
22  */
23 static const struct adr_remap intel_tgl_bios[] = {
24 	{
25 		0x000010025D070100ull,
26 		0x000020025D071100ull
27 	},
28 	{
29 		0x000110025d070100ull,
30 		0x000120025D130800ull
31 	},
32 	{}
33 };
34 
35 /*
36  * The initial version of the Dell SKU 0A3E did not expose the devices
37  * on the correct links.
38  */
39 static const struct adr_remap dell_sku_0A3E[] = {
40 	/* rt715 on link0 */
41 	{
42 		0x00020025d071100ull,
43 		0x00021025d071500ull
44 	},
45 	/* rt711 on link1 */
46 	{
47 		0x000120025d130800ull,
48 		0x000120025d071100ull,
49 	},
50 	/* rt1308 on link2 */
51 	{
52 		0x000220025d071500ull,
53 		0x000220025d130800ull
54 	},
55 	{}
56 };
57 
58 /*
59  * The HP Omen 16-k0005TX does not expose the correct version of RT711 on link0
60  * and does not expose a RT1316 on link3
61  */
62 static const struct adr_remap hp_omen_16[] = {
63 	/* rt711-sdca on link0 */
64 	{
65 		0x000020025d071100ull,
66 		0x000030025d071101ull
67 	},
68 	/* rt1316-sdca on link3 */
69 	{
70 		0x000120025d071100ull,
71 		0x000330025d131601ull
72 	},
73 	{}
74 };
75 
76 static const struct dmi_system_id adr_remap_quirk_table[] = {
77 	/* TGL devices */
78 	{
79 		.matches = {
80 			DMI_MATCH(DMI_SYS_VENDOR, "HP"),
81 			DMI_MATCH(DMI_PRODUCT_NAME, "HP Spectre x360 Conv"),
82 		},
83 		.driver_data = (void *)intel_tgl_bios,
84 	},
85 	{
86 		/* quirk used for NUC15 'Bishop County' LAPBC510 and LAPBC710 skews */
87 		.matches = {
88 			DMI_MATCH(DMI_SYS_VENDOR, "Intel(R) Client Systems"),
89 			DMI_MATCH(DMI_PRODUCT_NAME, "LAPBC"),
90 		},
91 		.driver_data = (void *)intel_tgl_bios,
92 	},
93 	{
94 		.matches = {
95 			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc"),
96 			DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "0A3E")
97 		},
98 		.driver_data = (void *)dell_sku_0A3E,
99 	},
100 	/* ADL devices */
101 	{
102 		.matches = {
103 			DMI_MATCH(DMI_SYS_VENDOR, "HP"),
104 			DMI_MATCH(DMI_PRODUCT_NAME, "OMEN by HP Gaming Laptop 16-k0xxx"),
105 		},
106 		.driver_data = (void *)hp_omen_16,
107 	},
108 	{}
109 };
110 
111 u64 sdw_dmi_override_adr(struct sdw_bus *bus, u64 addr)
112 {
113 	const struct dmi_system_id *dmi_id;
114 
115 	/* check if any address remap quirk applies */
116 	dmi_id = dmi_first_match(adr_remap_quirk_table);
117 	if (dmi_id) {
118 		struct adr_remap *map;
119 
120 		for (map = dmi_id->driver_data; map->adr; map++) {
121 			if (map->adr == addr) {
122 				dev_dbg(bus->dev, "remapped _ADR 0x%llx as 0x%llx\n",
123 					addr, map->remapped_adr);
124 				addr = map->remapped_adr;
125 				break;
126 			}
127 		}
128 	}
129 
130 	return addr;
131 }
132