diff options
Diffstat (limited to 'zephyr/program/nissa/craask/src/kb_backlight.c')
-rw-r--r-- | zephyr/program/nissa/craask/src/kb_backlight.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/zephyr/program/nissa/craask/src/kb_backlight.c b/zephyr/program/nissa/craask/src/kb_backlight.c new file mode 100644 index 0000000000..108cbb3abd --- /dev/null +++ b/zephyr/program/nissa/craask/src/kb_backlight.c @@ -0,0 +1,34 @@ +/* Copyright 2022 The ChromiumOS Authors + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include "board_config.h" +#include "common.h" +#include "cros_board_info.h" +#include "cros_cbi.h" + +#include <zephyr/devicetree.h> +#include <zephyr/logging/log.h> + +LOG_MODULE_DECLARE(nissa, CONFIG_NISSA_LOG_LEVEL); + +__override uint32_t board_override_feature_flags0(uint32_t flags0) +{ + int ret; + uint32_t val; + + /* + * Remove keyboard backlight feature for devices that don't support it. + */ + ret = cros_cbi_get_fw_config(FW_KB_BL, &val); + if (ret != 0) { + LOG_ERR("Error retrieving CBI FW_CONFIG field %d", FW_KB_BL); + return flags0; + } + + if (val == FW_KB_BL_NOT_PRESENT) + return (flags0 & ~EC_FEATURE_MASK_0(EC_FEATURE_PWM_KEYB)); + else + return flags0; +} |