diff options
Diffstat (limited to 'board/aurash/fw_config.c')
-rw-r--r-- | board/aurash/fw_config.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/board/aurash/fw_config.c b/board/aurash/fw_config.c new file mode 100644 index 0000000000..957a5c8c50 --- /dev/null +++ b/board/aurash/fw_config.c @@ -0,0 +1,65 @@ +/* Copyright 2023 The ChromiumOS Authors + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include "cbi.h" +#include "common.h" +#include "compile_time_macros.h" +#include "console.h" +#include "cros_board_info.h" +#include "fw_config.h" + +#define CPRINTS(format, args...) cprints(CC_SYSTEM, format, ##args) + +static union brask_cbi_fw_config fw_config; +BUILD_ASSERT(sizeof(fw_config) == sizeof(uint32_t)); + +/* + * FW_CONFIG defaults for brask if the CBI.FW_CONFIG data is not + * initialized. + */ +static const union brask_cbi_fw_config fw_config_defaults = { + .audio = DB_NAU88L25B_I2S, + .bj_power = BJ_135W, +}; + +/* + * Barrel-jack power adapter ratings. + */ +static const struct { + int voltage; + int current; +} bj_power[] = { + [BJ_135W] = { /* 0 - 135W (also default) */ + .voltage = 19500, + .current = 6920 + }, + [BJ_230W] = { /* 1 - 230W */ + .voltage = 19500, + .current = 11800 + } +}; + +/**************************************************************************** + * Brask FW_CONFIG access + */ +void board_init_fw_config(void) +{ + if (cbi_get_fw_config(&fw_config.raw_value)) { + CPRINTS("CBI: Read FW_CONFIG failed, using board defaults"); + fw_config = fw_config_defaults; + } +} + +void ec_bj_power(uint32_t *voltage, uint32_t *current) +{ + unsigned int bj; + + bj = fw_config.bj_power; + /* Out of range value defaults to 0 */ + if (bj >= ARRAY_SIZE(bj_power)) + bj = 0; + *voltage = bj_power[bj].voltage; + *current = bj_power[bj].current; +} |