1 /* SPDX-License-Identifier: GPL-2.0-only */ 1
2 /*
3 * Copyright(c) 2023-2024 Intel Corporation
4 *
5 * Authors: Cezary Rojewski <cezary.rojewski@i
6 * Amadeusz Slawinski <amadeuszx.slaw
7 */
8
9 #ifndef __ACPI_NHLT_H__
10 #define __ACPI_NHLT_H__
11
12 #include <linux/acpi.h>
13 #include <linux/kconfig.h>
14 #include <linux/overflow.h>
15 #include <linux/types.h>
16
17 #define __acpi_nhlt_endpoint_config(ep)
18 #define __acpi_nhlt_config_caps(cfg)
19
20 /**
21 * acpi_nhlt_endpoint_fmtscfg - Get the format
22 * @ep: the endpoint to retrieve the s
23 *
24 * Return: A pointer to the formats configurat
25 */
26 static inline struct acpi_nhlt_formats_config
27 acpi_nhlt_endpoint_fmtscfg(const struct acpi_n
28 {
29 struct acpi_nhlt_config *cfg = __acpi_
30
31 return (struct acpi_nhlt_formats_confi
32 }
33
34 #define __acpi_nhlt_first_endpoint(tb) \
35 ((void *)(tb + 1))
36
37 #define __acpi_nhlt_next_endpoint(ep) \
38 ((void *)((u8 *)(ep) + (ep)->length))
39
40 #define __acpi_nhlt_get_endpoint(tb, ep, i) \
41 ((i) ? __acpi_nhlt_next_endpoint(ep) :
42
43 #define __acpi_nhlt_first_fmtcfg(fmts) \
44 ((void *)(fmts + 1))
45
46 #define __acpi_nhlt_next_fmtcfg(fmt) \
47 ((void *)((u8 *)((fmt) + 1) + (fmt)->c
48
49 #define __acpi_nhlt_get_fmtcfg(fmts, fmt, i) \
50 ((i) ? __acpi_nhlt_next_fmtcfg(fmt) :
51
52 /*
53 * The for_each_nhlt_*() macros rely on an ite
54 * variable length of each endpoint structure
55 * of an OED-Config used by Windows only.
56 */
57
58 /**
59 * for_each_nhlt_endpoint - Iterate over endpo
60 * @tb: the pointer to a NHLT table.
61 * @ep: the pointer to endpoint to use
62 */
63 #define for_each_nhlt_endpoint(tb, ep)
64 for (unsigned int __i = 0;
65 __i < (tb)->endpoints_count &&
66 (ep = __acpi_nhlt_get_endpoint
67 __i++)
68
69 /**
70 * for_each_nhlt_fmtcfg - Iterate over format
71 * @fmts: the pointer to formats configu
72 * @fmt: the pointer to format to use a
73 */
74 #define for_each_nhlt_fmtcfg(fmts, fmt)
75 for (unsigned int __i = 0;
76 __i < (fmts)->formats_count &&
77 (fmt = __acpi_nhlt_get_fmtcfg(
78 __i++)
79
80 /**
81 * for_each_nhlt_endpoint_fmtcfg - Iterate ove
82 * @ep: the pointer to an endpoint.
83 * @fmt: the pointer to format to use a
84 */
85 #define for_each_nhlt_endpoint_fmtcfg(ep, fmt)
86 for_each_nhlt_fmtcfg(acpi_nhlt_endpoin
87
88 #if IS_ENABLED(CONFIG_ACPI_NHLT)
89
90 /*
91 * System-wide pointer to the first NHLT table
92 *
93 * A sound driver may utilize acpi_nhlt_get/pu
94 * initialization and removal respectively to
95 * and unmapping of the memory occupied by the
96 * operations.
97 */
98
99 acpi_status acpi_nhlt_get_gbl_table(void);
100 void acpi_nhlt_put_gbl_table(void);
101
102 bool acpi_nhlt_endpoint_match(const struct acp
103 int link_type, i
104 struct acpi_nhlt_endpoint *
105 acpi_nhlt_tb_find_endpoint(const struct acpi_t
106 int link_type, int
107 struct acpi_nhlt_endpoint *
108 acpi_nhlt_find_endpoint(int link_type, int dev
109 struct acpi_nhlt_format_config *
110 acpi_nhlt_endpoint_find_fmtcfg(const struct ac
111 u16 ch, u32 rat
112 struct acpi_nhlt_format_config *
113 acpi_nhlt_tb_find_fmtcfg(const struct acpi_tab
114 int link_type, int de
115 u16 ch, u32 rate, u16
116 struct acpi_nhlt_format_config *
117 acpi_nhlt_find_fmtcfg(int link_type, int dev_t
118 u16 ch, u32 rate, u16 vp
119 int acpi_nhlt_endpoint_mic_count(const struct
120
121 #else /* !CONFIG_ACPI_NHLT */
122
123 static inline acpi_status acpi_nhlt_get_gbl_ta
124 {
125 return AE_NOT_FOUND;
126 }
127
128 static inline void acpi_nhlt_put_gbl_table(voi
129 {
130 }
131
132 static inline bool
133 acpi_nhlt_endpoint_match(const struct acpi_nhl
134 int link_type, int de
135 {
136 return false;
137 }
138
139 static inline struct acpi_nhlt_endpoint *
140 acpi_nhlt_tb_find_endpoint(const struct acpi_t
141 int link_type, int
142 {
143 return NULL;
144 }
145
146 static inline struct acpi_nhlt_format_config *
147 acpi_nhlt_endpoint_find_fmtcfg(const struct ac
148 u16 ch, u32 rat
149 {
150 return NULL;
151 }
152
153 static inline struct acpi_nhlt_format_config *
154 acpi_nhlt_tb_find_fmtcfg(const struct acpi_tab
155 int link_type, int de
156 u16 ch, u32 rate, u16
157 {
158 return NULL;
159 }
160
161 static inline int acpi_nhlt_endpoint_mic_count
162 {
163 return 0;
164 }
165
166 static inline struct acpi_nhlt_endpoint *
167 acpi_nhlt_find_endpoint(int link_type, int dev
168 {
169 return NULL;
170 }
171
172 static inline struct acpi_nhlt_format_config *
173 acpi_nhlt_find_fmtcfg(int link_type, int dev_t
174 u16 ch, u32 rate, u16 vp
175 {
176 return NULL;
177 }
178
179 #endif /* CONFIG_ACPI_NHLT */
180
181 #endif /* __ACPI_NHLT_H__ */
182
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