src/include/sar.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 #ifndef _SAR_H_
   3 #define _SAR_H_
   4
   5 #include <stdint.h>
   6
   7 #define NUM_SAR_LIMITS 4
   8 #define BYTES_PER_SAR_LIMIT 10
   9 enum {
  10         SAR_FCC,
  11         SAR_EUROPE_JAPAN,
  12         SAR_REST_OF_WORLD,
  13         SAR_NUM_WGDS_GROUPS
  14 };
  15
  16 struct wifi_sar_delta_table {
  17         uint8_t version;
  18         struct {
  19                 uint8_t power_max_2400mhz;
  20                 uint8_t power_chain_a_2400mhz;
  21                 uint8_t power_chain_b_2400mhz;
  22                 uint8_t power_max_5200mhz;
  23                 uint8_t power_chain_a_5200mhz;
  24                 uint8_t power_chain_b_5200mhz;
  25         } __packed group[SAR_NUM_WGDS_GROUPS];
  26 } __packed;
  27
  28 /* Wifi SAR limit table structure */
  29 struct wifi_sar_limits {
  30         /* Total 4 SAR limit sets, each has 10 bytes */
  31         uint8_t sar_limit[NUM_SAR_LIMITS][BYTES_PER_SAR_LIMIT];
  32         struct wifi_sar_delta_table wgds;
  33 } __packed;
  34
  35 /*
  36  * Retrieve the SAR limits data from VPD and decode it.
  37  * sar_limits:  Pointer to wifi_sar_limits where the resulted data is stored
  38  *
  39  * Returns: 0 on success, -1 on errors (The VPD entry doesn't exist, or the
  40  * VPD entry contains non-heximal value.)
  41  */
  42 int get_wifi_sar_limits(struct wifi_sar_limits *sar_limits);
  43
  44 #define WIFI_SAR_CBFS_DEFAULT_FILENAME  "wifi_sar_defaults.hex"
  45
  46 const char *get_wifi_sar_cbfs_filename(void);
  47
  48 #endif /* _SAR_H_ */