Angel Pons | 32859fc | 2020-04-02 23:48:27 +0200 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 2 | /* This file is part of the coreboot project. */ |
Robbie Zhang | ed84002 | 2016-12-23 11:43:07 -0800 | [diff] [blame] | 3 | #ifndef _SAR_H_ |
| 4 | #define _SAR_H_ |
| 5 | |
| 6 | #include <stdint.h> |
| 7 | |
| 8 | #define NUM_SAR_LIMITS 4 |
| 9 | #define BYTES_PER_SAR_LIMIT 10 |
Pratik Prajapati | 7fd1e4b | 2017-08-11 14:06:57 -0700 | [diff] [blame] | 10 | enum { |
| 11 | SAR_FCC, |
| 12 | SAR_EUROPE_JAPAN, |
| 13 | SAR_REST_OF_WORLD, |
| 14 | SAR_NUM_WGDS_GROUPS |
| 15 | }; |
| 16 | |
| 17 | struct wifi_sar_delta_table { |
| 18 | uint8_t version; |
| 19 | struct { |
| 20 | uint8_t power_max_2400mhz; |
| 21 | uint8_t power_chain_a_2400mhz; |
| 22 | uint8_t power_chain_b_2400mhz; |
| 23 | uint8_t power_max_5200mhz; |
| 24 | uint8_t power_chain_a_5200mhz; |
| 25 | uint8_t power_chain_b_5200mhz; |
| 26 | } __packed group[SAR_NUM_WGDS_GROUPS]; |
| 27 | } __packed; |
Robbie Zhang | ed84002 | 2016-12-23 11:43:07 -0800 | [diff] [blame] | 28 | |
| 29 | /* Wifi SAR limit table structure */ |
| 30 | struct wifi_sar_limits { |
| 31 | /* Total 4 SAR limit sets, each has 10 bytes */ |
| 32 | uint8_t sar_limit[NUM_SAR_LIMITS][BYTES_PER_SAR_LIMIT]; |
Pratik Prajapati | 7fd1e4b | 2017-08-11 14:06:57 -0700 | [diff] [blame] | 33 | struct wifi_sar_delta_table wgds; |
| 34 | } __packed; |
Robbie Zhang | ed84002 | 2016-12-23 11:43:07 -0800 | [diff] [blame] | 35 | |
| 36 | /* |
| 37 | * Retrieve the SAR limits data from VPD and decode it. |
| 38 | * sar_limits: Pointer to wifi_sar_limits where the resulted data is stored |
| 39 | * |
Pratik Prajapati | 7fd1e4b | 2017-08-11 14:06:57 -0700 | [diff] [blame] | 40 | * Returns: 0 on success, -1 on errors (The VPD entry doesn't exist, or the |
Robbie Zhang | ed84002 | 2016-12-23 11:43:07 -0800 | [diff] [blame] | 41 | * VPD entry contains non-heximal value.) |
| 42 | */ |
| 43 | int get_wifi_sar_limits(struct wifi_sar_limits *sar_limits); |
| 44 | |
Justin TerAvest | c650d6c | 2018-12-14 11:05:03 -0700 | [diff] [blame] | 45 | const char *get_wifi_sar_cbfs_filename(void); |
| 46 | |
Robbie Zhang | ed84002 | 2016-12-23 11:43:07 -0800 | [diff] [blame] | 47 | #endif /* _SAR_H_ */ |