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a864e8f159
Multiple bug reports report issues with the SOF and SST drivers when
dealing with single microphone cases.
We currently read the DMIC array information unconditionally but we
don't check that the configuration type is actually a mic array.
When the DMIC link does not rely on a mic array configuration, the
recommendation is to check the format information to infer the maximum
number of channels, and map this to the number of microphones.
This leaves a potential for a mismatch between actual microphones
available in hardware and what the ACPI table contains, but we have no
other source of information.
Note that single microphone configurations can alternatively be
handled with a 'mic array' configuration along with a 'vendor-defined'
geometry.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=201251
BugLink: https://github.com/thesofproject/linux/issues/2725
Fixes: 7a33ea70e1 ('ALSA: hda: intel-nhlt: handle NHLT VENDOR_DEFINED DMIC geometry')
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20210302000146.1177770-1-pierre-louis.bossart@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
156 lines
2.8 KiB
C
156 lines
2.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* intel-nhlt.h - Intel HDA Platform NHLT header
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*
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* Copyright (c) 2015-2019 Intel Corporation
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*/
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#ifndef __INTEL_NHLT_H__
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#define __INTEL_NHLT_H__
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#include <linux/acpi.h>
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#if IS_ENABLED(CONFIG_ACPI) && IS_ENABLED(CONFIG_SND_INTEL_NHLT)
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struct wav_fmt {
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u16 fmt_tag;
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u16 channels;
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u32 samples_per_sec;
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u32 avg_bytes_per_sec;
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u16 block_align;
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u16 bits_per_sample;
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u16 cb_size;
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} __packed;
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struct wav_fmt_ext {
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struct wav_fmt fmt;
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union samples {
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u16 valid_bits_per_sample;
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u16 samples_per_block;
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u16 reserved;
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} sample;
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u32 channel_mask;
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u8 sub_fmt[16];
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} __packed;
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enum nhlt_link_type {
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NHLT_LINK_HDA = 0,
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NHLT_LINK_DSP = 1,
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NHLT_LINK_DMIC = 2,
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NHLT_LINK_SSP = 3,
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NHLT_LINK_INVALID
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};
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enum nhlt_device_type {
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NHLT_DEVICE_BT = 0,
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NHLT_DEVICE_DMIC = 1,
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NHLT_DEVICE_I2S = 4,
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NHLT_DEVICE_INVALID
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};
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struct nhlt_specific_cfg {
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u32 size;
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u8 caps[];
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} __packed;
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struct nhlt_fmt_cfg {
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struct wav_fmt_ext fmt_ext;
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struct nhlt_specific_cfg config;
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} __packed;
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struct nhlt_fmt {
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u8 fmt_count;
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struct nhlt_fmt_cfg fmt_config[];
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} __packed;
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struct nhlt_endpoint {
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u32 length;
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u8 linktype;
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u8 instance_id;
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u16 vendor_id;
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u16 device_id;
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u16 revision_id;
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u32 subsystem_id;
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u8 device_type;
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u8 direction;
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u8 virtual_bus_id;
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struct nhlt_specific_cfg config;
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} __packed;
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struct nhlt_acpi_table {
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struct acpi_table_header header;
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u8 endpoint_count;
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struct nhlt_endpoint desc[];
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} __packed;
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struct nhlt_resource_desc {
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u32 extra;
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u16 flags;
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u64 addr_spc_gra;
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u64 min_addr;
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u64 max_addr;
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u64 addr_trans_offset;
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u64 length;
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} __packed;
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#define MIC_ARRAY_2CH 2
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#define MIC_ARRAY_4CH 4
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struct nhlt_device_specific_config {
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u8 virtual_slot;
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u8 config_type;
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} __packed;
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struct nhlt_dmic_array_config {
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struct nhlt_device_specific_config device_config;
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u8 array_type;
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} __packed;
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struct nhlt_vendor_dmic_array_config {
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struct nhlt_dmic_array_config dmic_config;
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u8 nb_mics;
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/* TODO add vendor mic config */
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} __packed;
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enum {
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NHLT_CONFIG_TYPE_GENERIC = 0,
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NHLT_CONFIG_TYPE_MIC_ARRAY = 1
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};
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enum {
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NHLT_MIC_ARRAY_2CH_SMALL = 0xa,
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NHLT_MIC_ARRAY_2CH_BIG = 0xb,
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NHLT_MIC_ARRAY_4CH_1ST_GEOM = 0xc,
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NHLT_MIC_ARRAY_4CH_L_SHAPED = 0xd,
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NHLT_MIC_ARRAY_4CH_2ND_GEOM = 0xe,
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NHLT_MIC_ARRAY_VENDOR_DEFINED = 0xf,
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};
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struct nhlt_acpi_table *intel_nhlt_init(struct device *dev);
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void intel_nhlt_free(struct nhlt_acpi_table *addr);
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int intel_nhlt_get_dmic_geo(struct device *dev, struct nhlt_acpi_table *nhlt);
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#else
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struct nhlt_acpi_table;
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static inline struct nhlt_acpi_table *intel_nhlt_init(struct device *dev)
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{
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return NULL;
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}
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static inline void intel_nhlt_free(struct nhlt_acpi_table *addr)
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{
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}
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static inline int intel_nhlt_get_dmic_geo(struct device *dev,
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struct nhlt_acpi_table *nhlt)
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{
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return 0;
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}
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#endif
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#endif
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