linux/include/sound/intel-nhlt.h
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   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 *  intel-nhlt.h - Intel HDA Platform NHLT header
   4 *
   5 *  Copyright (c) 2015-2019 Intel Corporation
   6 */
   7
   8#ifndef __INTEL_NHLT_H__
   9#define __INTEL_NHLT_H__
  10
  11#include <linux/acpi.h>
  12
  13#if IS_ENABLED(CONFIG_ACPI) && IS_ENABLED(CONFIG_SND_INTEL_NHLT)
  14
  15struct wav_fmt {
  16        u16 fmt_tag;
  17        u16 channels;
  18        u32 samples_per_sec;
  19        u32 avg_bytes_per_sec;
  20        u16 block_align;
  21        u16 bits_per_sample;
  22        u16 cb_size;
  23} __packed;
  24
  25struct wav_fmt_ext {
  26        struct wav_fmt fmt;
  27        union samples {
  28                u16 valid_bits_per_sample;
  29                u16 samples_per_block;
  30                u16 reserved;
  31        } sample;
  32        u32 channel_mask;
  33        u8 sub_fmt[16];
  34} __packed;
  35
  36enum nhlt_link_type {
  37        NHLT_LINK_HDA = 0,
  38        NHLT_LINK_DSP = 1,
  39        NHLT_LINK_DMIC = 2,
  40        NHLT_LINK_SSP = 3,
  41        NHLT_LINK_INVALID
  42};
  43
  44enum nhlt_device_type {
  45        NHLT_DEVICE_BT = 0,
  46        NHLT_DEVICE_DMIC = 1,
  47        NHLT_DEVICE_I2S = 4,
  48        NHLT_DEVICE_INVALID
  49};
  50
  51struct nhlt_specific_cfg {
  52        u32 size;
  53        u8 caps[0];
  54} __packed;
  55
  56struct nhlt_fmt_cfg {
  57        struct wav_fmt_ext fmt_ext;
  58        struct nhlt_specific_cfg config;
  59} __packed;
  60
  61struct nhlt_fmt {
  62        u8 fmt_count;
  63        struct nhlt_fmt_cfg fmt_config[0];
  64} __packed;
  65
  66struct nhlt_endpoint {
  67        u32  length;
  68        u8   linktype;
  69        u8   instance_id;
  70        u16  vendor_id;
  71        u16  device_id;
  72        u16  revision_id;
  73        u32  subsystem_id;
  74        u8   device_type;
  75        u8   direction;
  76        u8   virtual_bus_id;
  77        struct nhlt_specific_cfg config;
  78} __packed;
  79
  80struct nhlt_acpi_table {
  81        struct acpi_table_header header;
  82        u8 endpoint_count;
  83        struct nhlt_endpoint desc[0];
  84} __packed;
  85
  86struct nhlt_resource_desc  {
  87        u32 extra;
  88        u16 flags;
  89        u64 addr_spc_gra;
  90        u64 min_addr;
  91        u64 max_addr;
  92        u64 addr_trans_offset;
  93        u64 length;
  94} __packed;
  95
  96#define MIC_ARRAY_2CH 2
  97#define MIC_ARRAY_4CH 4
  98
  99struct nhlt_device_specific_config {
 100        u8 virtual_slot;
 101        u8 config_type;
 102} __packed;
 103
 104struct nhlt_dmic_array_config {
 105        struct nhlt_device_specific_config device_config;
 106        u8 array_type;
 107} __packed;
 108
 109struct nhlt_vendor_dmic_array_config {
 110        struct nhlt_dmic_array_config dmic_config;
 111        u8 nb_mics;
 112        /* TODO add vendor mic config */
 113} __packed;
 114
 115enum {
 116        NHLT_MIC_ARRAY_2CH_SMALL = 0xa,
 117        NHLT_MIC_ARRAY_2CH_BIG = 0xb,
 118        NHLT_MIC_ARRAY_4CH_1ST_GEOM = 0xc,
 119        NHLT_MIC_ARRAY_4CH_L_SHAPED = 0xd,
 120        NHLT_MIC_ARRAY_4CH_2ND_GEOM = 0xe,
 121        NHLT_MIC_ARRAY_VENDOR_DEFINED = 0xf,
 122};
 123
 124struct nhlt_acpi_table *intel_nhlt_init(struct device *dev);
 125
 126void intel_nhlt_free(struct nhlt_acpi_table *addr);
 127
 128int intel_nhlt_get_dmic_geo(struct device *dev, struct nhlt_acpi_table *nhlt);
 129
 130#else
 131
 132struct nhlt_acpi_table;
 133
 134static inline struct nhlt_acpi_table *intel_nhlt_init(struct device *dev)
 135{
 136        return NULL;
 137}
 138
 139static inline void intel_nhlt_free(struct nhlt_acpi_table *addr)
 140{
 141}
 142
 143static inline int intel_nhlt_get_dmic_geo(struct device *dev,
 144                                          struct nhlt_acpi_table *nhlt)
 145{
 146        return 0;
 147}
 148#endif
 149
 150#endif
 151