105 lines
2.1 KiB
C
105 lines
2.1 KiB
C
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// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
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// Copyright(c) 2021 Intel Corporation.
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/*
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* Soundwire DMI quirks
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*/
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#include <linux/device.h>
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#include <linux/dmi.h>
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#include <linux/soundwire/sdw.h>
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#include "bus.h"
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struct adr_remap {
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u64 adr;
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u64 remapped_adr;
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};
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/*
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* Some TigerLake devices based on an initial Intel BIOS do not expose
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* the correct _ADR in the DSDT.
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* Remap the bad _ADR values to the ones reported by hardware
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*/
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static const struct adr_remap intel_tgl_bios[] = {
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{
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0x000010025D070100ull,
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0x000020025D071100ull
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},
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{
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0x000110025d070100ull,
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0x000120025D130800ull
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},
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{}
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};
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/*
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* The initial version of the Dell SKU 0A3E did not expose the devices
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* on the correct links.
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*/
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static const struct adr_remap dell_sku_0A3E[] = {
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/* rt715 on link0 */
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{
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0x00020025d071100ull,
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0x00021025d071500ull
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},
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/* rt711 on link1 */
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{
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0x000120025d130800ull,
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0x000120025d071100ull,
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},
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/* rt1308 on link2 */
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{
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0x000220025d071500ull,
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0x000220025d130800ull
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},
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{}
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};
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static const struct dmi_system_id adr_remap_quirk_table[] = {
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{
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "HP"),
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DMI_MATCH(DMI_PRODUCT_NAME, "HP Spectre x360 Conv"),
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},
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.driver_data = (void *)intel_tgl_bios,
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},
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{
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/* quirk used for NUC15 'Bishop County' LAPBC510 and LAPBC710 skews */
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Intel(R) Client Systems"),
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DMI_MATCH(DMI_PRODUCT_NAME, "LAPBC"),
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},
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.driver_data = (void *)intel_tgl_bios,
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},
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{
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc"),
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DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "0A3E")
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},
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.driver_data = (void *)dell_sku_0A3E,
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},
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{}
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};
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u64 sdw_dmi_override_adr(struct sdw_bus *bus, u64 addr)
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{
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const struct dmi_system_id *dmi_id;
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/* check if any address remap quirk applies */
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dmi_id = dmi_first_match(adr_remap_quirk_table);
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if (dmi_id) {
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struct adr_remap *map;
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for (map = dmi_id->driver_data; map->adr; map++) {
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if (map->adr == addr) {
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dev_dbg(bus->dev, "remapped _ADR 0x%llx as 0x%llx\n",
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addr, map->remapped_adr);
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addr = map->remapped_adr;
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break;
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}
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}
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}
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return addr;
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}
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