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Linux/include/acpi/nhlt.h

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Diff markup

Differences between /include/acpi/nhlt.h (Version linux-6.12-rc7) and /include/acpi/nhlt.h (Version linux-4.19.323)


  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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