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soundwire: dmi-quirks: add a global ghost list #5826

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soundwire: dmi-quirks: add a global ghost list #5826

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21 changes: 20 additions & 1 deletion drivers/soundwire/dmi-quirks.c
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,14 @@ struct adr_remap {
u64 remapped_adr;
};

static const struct adr_remap global_ghost_adr[] = {
{
0x000000D010010500ull,
0x0000000000000000ull
},
{}
};

/*
* Some TigerLake devices based on an initial Intel BIOS do not expose
* the correct _ADR in the DSDT.
Expand Down Expand Up @@ -170,6 +178,7 @@ static const struct dmi_system_id adr_remap_quirk_table[] = {
u64 sdw_dmi_override_adr(struct sdw_bus *bus, u64 addr)
{
const struct dmi_system_id *dmi_id;
int i;

/* check if any address remap quirk applies */
dmi_id = dmi_first_match(adr_remap_quirk_table);
Expand All @@ -181,10 +190,20 @@ u64 sdw_dmi_override_adr(struct sdw_bus *bus, u64 addr)
dev_dbg(bus->dev, "remapped _ADR 0x%llx as 0x%llx\n",
addr, map->remapped_adr);
addr = map->remapped_adr;
break;
goto out;
}
}
}

/* remap the ghost ADRs */
for (i = 0; i < ARRAY_SIZE(global_ghost_adr); i++) {
if (global_ghost_adr[i].adr == addr) {
dev_dbg(bus->dev, "remapped _ADR 0x%llx as 0x%llx\n",
addr, global_ghost_adr[i].remapped_adr);
addr = global_ghost_adr[i].remapped_adr;
break;
}
}
out:
return addr;
}
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