Angel Pons | 60ec365 | 2020-04-03 01:22:13 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Aamir Bohra | 6fed468 | 2016-11-08 14:06:17 +0530 | [diff] [blame] | 2 | #include "board_id.h" |
| 3 | #include <ec/acpi/ec.h> |
| 4 | #include <stdint.h> |
| 5 | |
| 6 | /* |
Praveen hodagatta pranesh | cd26f08 | 2018-12-19 19:28:21 +0800 | [diff] [blame] | 7 | * Get Board info via EC I/O port write/read |
Aamir Bohra | 6fed468 | 2016-11-08 14:06:17 +0530 | [diff] [blame] | 8 | */ |
Praveen hodagatta pranesh | cd26f08 | 2018-12-19 19:28:21 +0800 | [diff] [blame] | 9 | int get_ec_boardinfo(void) |
| 10 | { |
Jeremy Compostella | f65ae74 | 2023-09-06 10:57:56 -0700 | [diff] [blame] | 11 | static int ec_info = -1; |
Praveen hodagatta pranesh | cd26f08 | 2018-12-19 19:28:21 +0800 | [diff] [blame] | 12 | if (ec_info < 0) { |
| 13 | uint8_t buffer[2]; |
| 14 | uint8_t index; |
| 15 | if (send_ec_command(EC_FAB_ID_CMD) == 0) { |
| 16 | for (index = 0; index < sizeof(buffer); index++) |
| 17 | buffer[index] = recv_ec_data(); |
| 18 | ec_info = (buffer[1] << 8) | buffer[0]; |
| 19 | } |
| 20 | } |
| 21 | return ec_info; |
| 22 | } |
| 23 | |
| 24 | /* Get spd index */ |
Praveen hodagatta pranesh | 0dbce40 | 2019-01-10 18:23:58 +0800 | [diff] [blame] | 25 | int get_spd_index(u8 *spd_index) |
Praveen hodagatta pranesh | cd26f08 | 2018-12-19 19:28:21 +0800 | [diff] [blame] | 26 | { |
| 27 | int ec_info = get_ec_boardinfo(); |
Praveen hodagatta pranesh | 0dbce40 | 2019-01-10 18:23:58 +0800 | [diff] [blame] | 28 | if (ec_info >= 0) { |
| 29 | *spd_index = ((uint16_t)ec_info >> 5) & 0x7; |
| 30 | return 0; |
| 31 | } |
Praveen hodagatta pranesh | cd26f08 | 2018-12-19 19:28:21 +0800 | [diff] [blame] | 32 | return -1; |
| 33 | } |
| 34 | |
| 35 | /* Get Board Id */ |
Aamir Bohra | 6fed468 | 2016-11-08 14:06:17 +0530 | [diff] [blame] | 36 | int get_board_id(void) |
| 37 | { |
Praveen hodagatta pranesh | cd26f08 | 2018-12-19 19:28:21 +0800 | [diff] [blame] | 38 | int ec_info = get_ec_boardinfo(); |
| 39 | if (ec_info >= 0) |
| 40 | return ((uint16_t)ec_info >> 8) & 0xff; |
| 41 | |
Aamir Bohra | 6fed468 | 2016-11-08 14:06:17 +0530 | [diff] [blame] | 42 | return -1; |
| 43 | } |