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 enum nhlt_link_type {
14 	NHLT_LINK_HDA = 0,
15 	NHLT_LINK_DSP = 1,
16 	NHLT_LINK_DMIC = 2,
17 	NHLT_LINK_SSP = 3,
18 	NHLT_LINK_INVALID
19 };
20 
21 enum nhlt_device_type {
22 	NHLT_DEVICE_BT = 0,
23 	NHLT_DEVICE_DMIC = 1,
24 	NHLT_DEVICE_I2S = 4,
25 	NHLT_DEVICE_INVALID
26 };
27 
28 struct wav_fmt {
29 	u16 fmt_tag;
30 	u16 channels;
31 	u32 samples_per_sec;
32 	u32 avg_bytes_per_sec;
33 	u16 block_align;
34 	u16 bits_per_sample;
35 	u16 cb_size;
36 } __packed;
37 
38 struct wav_fmt_ext {
39 	struct wav_fmt fmt;
40 	union samples {
41 		u16 valid_bits_per_sample;
42 		u16 samples_per_block;
43 		u16 reserved;
44 	} sample;
45 	u32 channel_mask;
46 	u8 sub_fmt[16];
47 } __packed;
48 
49 struct nhlt_specific_cfg {
50 	u32 size;
51 	u8 caps[];
52 } __packed;
53 
54 struct nhlt_fmt_cfg {
55 	struct wav_fmt_ext fmt_ext;
56 	struct nhlt_specific_cfg config;
57 } __packed;
58 
59 struct nhlt_fmt {
60 	u8 fmt_count;
61 	struct nhlt_fmt_cfg fmt_config[];
62 } __packed;
63 
64 struct nhlt_endpoint {
65 	u32  length;
66 	u8   linktype;
67 	u8   instance_id;
68 	u16  vendor_id;
69 	u16  device_id;
70 	u16  revision_id;
71 	u32  subsystem_id;
72 	u8   device_type;
73 	u8   direction;
74 	u8   virtual_bus_id;
75 	struct nhlt_specific_cfg config;
76 } __packed;
77 
78 struct nhlt_acpi_table {
79 	struct acpi_table_header header;
80 	u8 endpoint_count;
81 	struct nhlt_endpoint desc[];
82 } __packed;
83 
84 struct nhlt_resource_desc  {
85 	u32 extra;
86 	u16 flags;
87 	u64 addr_spc_gra;
88 	u64 min_addr;
89 	u64 max_addr;
90 	u64 addr_trans_offset;
91 	u64 length;
92 } __packed;
93 
94 #define MIC_ARRAY_2CH 2
95 #define MIC_ARRAY_4CH 4
96 
97 struct nhlt_device_specific_config {
98 	u8 virtual_slot;
99 	u8 config_type;
100 } __packed;
101 
102 struct nhlt_dmic_array_config {
103 	struct nhlt_device_specific_config device_config;
104 	u8 array_type;
105 } __packed;
106 
107 struct nhlt_vendor_dmic_array_config {
108 	struct nhlt_dmic_array_config dmic_config;
109 	u8 nb_mics;
110 	/* TODO add vendor mic config */
111 } __packed;
112 
113 enum {
114 	NHLT_CONFIG_TYPE_GENERIC = 0,
115 	NHLT_CONFIG_TYPE_MIC_ARRAY = 1
116 };
117 
118 enum {
119 	NHLT_MIC_ARRAY_2CH_SMALL = 0xa,
120 	NHLT_MIC_ARRAY_2CH_BIG = 0xb,
121 	NHLT_MIC_ARRAY_4CH_1ST_GEOM = 0xc,
122 	NHLT_MIC_ARRAY_4CH_L_SHAPED = 0xd,
123 	NHLT_MIC_ARRAY_4CH_2ND_GEOM = 0xe,
124 	NHLT_MIC_ARRAY_VENDOR_DEFINED = 0xf,
125 };
126 
127 #if IS_ENABLED(CONFIG_ACPI) && IS_ENABLED(CONFIG_SND_INTEL_NHLT)
128 
129 struct nhlt_acpi_table *intel_nhlt_init(struct device *dev);
130 
131 void intel_nhlt_free(struct nhlt_acpi_table *addr);
132 
133 int intel_nhlt_get_dmic_geo(struct device *dev, struct nhlt_acpi_table *nhlt);
134 
135 bool intel_nhlt_has_endpoint_type(struct nhlt_acpi_table *nhlt, u8 link_type);
136 
137 int intel_nhlt_ssp_endpoint_mask(struct nhlt_acpi_table *nhlt, u8 device_type);
138 
139 struct nhlt_specific_cfg *
140 intel_nhlt_get_endpoint_blob(struct device *dev, struct nhlt_acpi_table *nhlt,
141 			     u32 bus_id, u8 link_type, u8 vbps, u8 bps,
142 			     u8 num_ch, u32 rate, u8 dir, u8 dev_type);
143 
144 #else
145 
intel_nhlt_init(struct device * dev)146 static inline struct nhlt_acpi_table *intel_nhlt_init(struct device *dev)
147 {
148 	return NULL;
149 }
150 
intel_nhlt_free(struct nhlt_acpi_table * addr)151 static inline void intel_nhlt_free(struct nhlt_acpi_table *addr)
152 {
153 }
154 
intel_nhlt_get_dmic_geo(struct device * dev,struct nhlt_acpi_table * nhlt)155 static inline int intel_nhlt_get_dmic_geo(struct device *dev,
156 					  struct nhlt_acpi_table *nhlt)
157 {
158 	return 0;
159 }
160 
intel_nhlt_has_endpoint_type(struct nhlt_acpi_table * nhlt,u8 link_type)161 static inline bool intel_nhlt_has_endpoint_type(struct nhlt_acpi_table *nhlt,
162 						u8 link_type)
163 {
164 	return false;
165 }
166 
intel_nhlt_ssp_endpoint_mask(struct nhlt_acpi_table * nhlt,u8 device_type)167 static inline int intel_nhlt_ssp_endpoint_mask(struct nhlt_acpi_table *nhlt, u8 device_type)
168 {
169 	return 0;
170 }
171 
172 static inline struct nhlt_specific_cfg *
intel_nhlt_get_endpoint_blob(struct device * dev,struct nhlt_acpi_table * nhlt,u32 bus_id,u8 link_type,u8 vbps,u8 bps,u8 num_ch,u32 rate,u8 dir,u8 dev_type)173 intel_nhlt_get_endpoint_blob(struct device *dev, struct nhlt_acpi_table *nhlt,
174 			     u32 bus_id, u8 link_type, u8 vbps, u8 bps,
175 			     u8 num_ch, u32 rate, u8 dir, u8 dev_type)
176 {
177 	return NULL;
178 }
179 
180 #endif
181 
182 #endif
183