linux/sound/hda/intel-nhlt.c
Takashi Iwai 7318234c8d ASoC: Updates for v5.8
This has been another very active release with a bunch of new drivers,
 lots of fixes everywhere and continued core improvements from
 Morimoto-san:
 
  - Lots of core cleanups and refactorings from Morimoto-san, factoring
    out common operations and making the card abstraction more solid.
  - Continued work on cleaning up and improving the Intel drivers, along
    with some new platform support for them.
  - Fixes to make the Marvell SSPA driver work upstream.
  - Support for AMD Renoir ACP, Dialog DA7212, Freescale EASRC and
    i.MX8M, Intel Elkhard Lake, Maxim MAX98390, Nuvoton NAU8812 and
    NAU8814 and Realtek RT1016.
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Merge tag 'asoc-v5.8' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Updates for v5.8

This has been another very active release with a bunch of new drivers,
lots of fixes everywhere and continued core improvements from
Morimoto-san:

 - Lots of core cleanups and refactorings from Morimoto-san, factoring
   out common operations and making the card abstraction more solid.
 - Continued work on cleaning up and improving the Intel drivers, along
   with some new platform support for them.
 - Fixes to make the Marvell SSPA driver work upstream.
 - Support for AMD Renoir ACP, Dialog DA7212, Freescale EASRC and
   i.MX8M, Intel Elkhard Lake, Maxim MAX98390, Nuvoton NAU8812 and
   NAU8814 and Realtek RT1016.
2020-06-01 20:26:07 +02:00

72 lines
1.7 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
// Copyright (c) 2015-2019 Intel Corporation
#include <linux/acpi.h>
#include <sound/intel-nhlt.h>
struct nhlt_acpi_table *intel_nhlt_init(struct device *dev)
{
struct nhlt_acpi_table *nhlt;
acpi_status status;
status = acpi_get_table(ACPI_SIG_NHLT, 0,
(struct acpi_table_header **)&nhlt);
if (ACPI_FAILURE(status)) {
dev_warn(dev, "NHLT table not found\n");
return NULL;
}
return nhlt;
}
EXPORT_SYMBOL_GPL(intel_nhlt_init);
void intel_nhlt_free(struct nhlt_acpi_table *nhlt)
{
acpi_put_table((struct acpi_table_header *)nhlt);
}
EXPORT_SYMBOL_GPL(intel_nhlt_free);
int intel_nhlt_get_dmic_geo(struct device *dev, struct nhlt_acpi_table *nhlt)
{
struct nhlt_endpoint *epnt;
struct nhlt_dmic_array_config *cfg;
struct nhlt_vendor_dmic_array_config *cfg_vendor;
unsigned int dmic_geo = 0;
u8 j;
if (!nhlt)
return 0;
epnt = (struct nhlt_endpoint *)nhlt->desc;
for (j = 0; j < nhlt->endpoint_count; j++) {
if (epnt->linktype == NHLT_LINK_DMIC) {
cfg = (struct nhlt_dmic_array_config *)
(epnt->config.caps);
switch (cfg->array_type) {
case NHLT_MIC_ARRAY_2CH_SMALL:
case NHLT_MIC_ARRAY_2CH_BIG:
dmic_geo = MIC_ARRAY_2CH;
break;
case NHLT_MIC_ARRAY_4CH_1ST_GEOM:
case NHLT_MIC_ARRAY_4CH_L_SHAPED:
case NHLT_MIC_ARRAY_4CH_2ND_GEOM:
dmic_geo = MIC_ARRAY_4CH;
break;
case NHLT_MIC_ARRAY_VENDOR_DEFINED:
cfg_vendor = (struct nhlt_vendor_dmic_array_config *)cfg;
dmic_geo = cfg_vendor->nb_mics;
break;
default:
dev_warn(dev, "undefined DMIC array_type 0x%0x\n",
cfg->array_type);
}
}
epnt = (struct nhlt_endpoint *)((u8 *)epnt + epnt->length);
}
return dmic_geo;
}
EXPORT_SYMBOL_GPL(intel_nhlt_get_dmic_geo);