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/*
* This file is part of the coreboot project.
*
* Copyright 2015 Google, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <cbmem.h>
#include <soc/acpi.h>
#include <soc/nhlt.h>
#define NHLT_VID 0x8086
#define NHLT_DID_DMIC 0xae20
#define NHLT_DID_BT 0xae30
#define NHLT_DID_SSP 0xae34
struct nhlt_endpoint *nhlt_soc_add_endpoint(struct nhlt *nhlt, int soc_hwintf,
int soc_devtype, int dir)
{
int nhlt_link_type;
int nhlt_dev_type;
uint16_t did;
struct nhlt_endpoint *endp;
/* Check link type and device type. */
switch (soc_hwintf) {
case AUDIO_LINK_SSP0:
case AUDIO_LINK_SSP1:
/* Only I2S devices on SSP0 and SSP1. */
if (soc_devtype != AUDIO_DEV_I2S)
return NULL;
nhlt_link_type = NHLT_LINK_SSP;
break;
case AUDIO_LINK_SSP2:
/* Only Bluetooth devices on SSP2. */
if (soc_devtype != AUDIO_DEV_BT)
return NULL;
nhlt_link_type = NHLT_LINK_SSP;
break;
case AUDIO_LINK_DMIC:
/* Only DMIC devices on DMIC links. */
if (soc_devtype != AUDIO_DEV_DMIC)
return NULL;
nhlt_link_type = NHLT_LINK_PDM;
break;
default:
return NULL;
}
switch (soc_devtype) {
case AUDIO_DEV_I2S:
nhlt_dev_type = NHLT_SSP_DEV_I2S;
did = NHLT_DID_SSP;
break;
case AUDIO_DEV_DMIC:
nhlt_dev_type = NHLT_PDM_DEV;
did = NHLT_DID_DMIC;
break;
case AUDIO_DEV_BT:
nhlt_dev_type = NHLT_SSP_DEV_BT;
did = NHLT_DID_BT;
break;
default:
return NULL;
}
endp = nhlt_add_endpoint(nhlt, nhlt_link_type, nhlt_dev_type, dir,
NHLT_VID, did);
if (endp == NULL)
return NULL;
/* Virtual bus id of SSP links are the hardware port ids proper. */
if (nhlt_link_type == NHLT_LINK_SSP)
endp->virtual_bus_id = soc_hwintf;
return endp;
}
uintptr_t nhlt_soc_serialize(struct nhlt *nhlt, uintptr_t acpi_addr)
{
return nhlt_soc_serialize_oem_overrides(nhlt, acpi_addr, NULL, NULL);
}
uintptr_t nhlt_soc_serialize_oem_overrides(struct nhlt *nhlt,
uintptr_t acpi_addr, const char *oem_id, const char *oem_table_id)
{
global_nvs_t *gnvs;
gnvs = cbmem_find(CBMEM_ID_ACPI_GNVS);
if (gnvs == NULL)
return acpi_addr;
/* Update NHLT GNVS Data */
gnvs->nhla = (uintptr_t)acpi_addr;
gnvs->nhll = nhlt_current_size(nhlt);
return nhlt_serialize_oem_overrides(nhlt, acpi_addr,
oem_id, oem_table_id);
}
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