67 lines
1.3 KiB
C
67 lines
1.3 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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* HP Spectre 360 Convertible devices do not expose the correct _ADR
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* 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 hp_spectre_360[] = {
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{
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0x000010025D070100,
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0x000020025D071100
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},
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{
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0x000110025d070100,
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0x000120025D130800
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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 Convertible"),
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},
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.driver_data = (void *)hp_spectre_360,
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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 = dmi_id->driver_data;
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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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