include/sound/intel-nhlt.h

   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
  15 struct 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
  25 struct 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
  36 enum 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
  44 enum nhlt_device_type {
  45         NHLT_DEVICE_BT = 0,
  46         NHLT_DEVICE_DMIC = 1,
  47         NHLT_DEVICE_I2S = 4,
  48         NHLT_DEVICE_INVALID
  49 };
  50
  51 struct nhlt_specific_cfg {
  52         u32 size;
  53         u8 caps[0];
  54 } __packed;
  55
  56 struct nhlt_fmt_cfg {
  57         struct wav_fmt_ext fmt_ext;
  58         struct nhlt_specific_cfg config;
  59 } __packed;
  60
  61 struct nhlt_fmt {
  62         u8 fmt_count;
  63         struct nhlt_fmt_cfg fmt_config[0];
  64 } __packed;
  65
  66 struct 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
  80 struct nhlt_acpi_table {
  81         struct acpi_table_header header;
  82         u8 endpoint_count;
  83         struct nhlt_endpoint desc[0];
  84 } __packed;
  85
  86 struct 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
  99 struct nhlt_tdm_config {
 100         u8 virtual_slot;
 101         u8 config_type;
 102 } __packed;
 103
 104 struct nhlt_dmic_array_config {
 105         struct nhlt_tdm_config tdm_config;
 106         u8 array_type;
 107 } __packed;
 108
 109 enum {
 110         NHLT_MIC_ARRAY_2CH_SMALL = 0xa,
 111         NHLT_MIC_ARRAY_2CH_BIG = 0xb,
 112         NHLT_MIC_ARRAY_4CH_1ST_GEOM = 0xc,
 113         NHLT_MIC_ARRAY_4CH_L_SHAPED = 0xd,
 114         NHLT_MIC_ARRAY_4CH_2ND_GEOM = 0xe,
 115         NHLT_MIC_ARRAY_VENDOR_DEFINED = 0xf,
 116 };
 117
 118 struct nhlt_acpi_table *intel_nhlt_init(struct device *dev);
 119
 120 void intel_nhlt_free(struct nhlt_acpi_table *addr);
 121
 122 int intel_nhlt_get_dmic_geo(struct device *dev, struct nhlt_acpi_table *nhlt);
 123
 124 #else
 125
 126 struct nhlt_acpi_table;
 127
 128 static inline struct nhlt_acpi_table *intel_nhlt_init(struct device *dev)
 129 {
 130         return NULL;
 131 }
 132
 133 static inline void intel_nhlt_free(struct nhlt_acpi_table *addr)
 134 {
 135 }
 136
 137 static inline int intel_nhlt_get_dmic_geo(struct device *dev,
 138                                           struct nhlt_acpi_table *nhlt)
 139 {
 140         return 0;
 141 }
 142 #endif
 143
 144 #endif