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 static const struct dmi_system_id adr_remap_quirk_table[] = { 59 { 60 .matches = { 61 DMI_MATCH(DMI_SYS_VENDOR, "HP"), 62 DMI_MATCH(DMI_PRODUCT_NAME, "HP Spectre x360 Convertible"), 63 }, 64 .driver_data = (void *)intel_tgl_bios, 65 }, 66 { 67 /* quirk used for NUC15 'Bishop County' LAPBC510 and LAPBC710 skews */ 68 .matches = { 69 DMI_MATCH(DMI_SYS_VENDOR, "Intel(R) Client Systems"), 70 DMI_MATCH(DMI_PRODUCT_NAME, "LAPBC"), 71 }, 72 .driver_data = (void *)intel_tgl_bios, 73 }, 74 { 75 .matches = { 76 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc"), 77 DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "0A3E") 78 }, 79 .driver_data = (void *)dell_sku_0A3E, 80 }, 81 {} 82 }; 83 84 u64 sdw_dmi_override_adr(struct sdw_bus *bus, u64 addr) 85 { 86 const struct dmi_system_id *dmi_id; 87 88 /* check if any address remap quirk applies */ 89 dmi_id = dmi_first_match(adr_remap_quirk_table); 90 if (dmi_id) { 91 struct adr_remap *map; 92 93 for (map = dmi_id->driver_data; map->adr; map++) { 94 if (map->adr == addr) { 95 dev_dbg(bus->dev, "remapped _ADR 0x%llx as 0x%llx\n", 96 addr, map->remapped_adr); 97 addr = map->remapped_adr; 98 break; 99 } 100 } 101 } 102 103 return addr; 104 } 105