STRUCT EC_PARAMS_CEC_WRITE_V1(9)

✨ NAME ✨

okay so welcome to the Kernel API Manual page for struct ec_params_cec_write_v1, bestie 💅. The NAME situation is literally:

struct ec_params_cec_write_v1 - Message to write to the CEC bus

That’s the whole main-character job: it’s the message struct for writing to the CEC bus. No cap.

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🎀 SYNOPSIS 🎀

Here’s her exact shape, character for character, because we do not play with code 🫶:

struct ec_params_cec_write_v1 {
    uint8_t port;
    uint8_t msg_len;
    uint8_t msg[MAX_CEC_MSG_LEN];
};

It’s giving tiny struct, big CEC energy 🦋.

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💅 Members 💅

Inside this struct you get three members, and they are literally:

• port — CEC port to write the message on. In the struct it’s declared as uint8_t port; 👑
• msg_len — length of msg in bytes. In the struct it’s declared as uint8_t msg_len; fr fr.
• msg — message content to write to the CEC bus. In the struct it’s declared as uint8_t msg[MAX_CEC_MSG_LEN]; 🎀

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🦋 SEE ALSO 🦋

Go peek at these too, bestie — here’s the whole roster, and yes, we are listing every single one:

• Kernel file: ./include/linux/platform_data/cros_ec_commands.h
• struct ec_lpc_host_args(9)
• struct ec_host_request(9)
• struct ec_host_response(9)
• struct ec_response_proto_version(9)
• struct ec_params_hello(9)
• struct ec_response_hello(9)
• struct ec_response_get_version(9)
• struct ec_params_read_test(9)
• struct ec_response_read_test(9)
• struct ec_response_get_chip_info(9)
• struct ec_response_board_version(9)
• struct ec_params_read_memmap(9)
• struct ec_params_get_cmd_versions(9)
• struct ec_params_get_cmd_versions_v1(9)
• struct ec_response_get_cmd_versions(9)
• struct ec_response_get_comms_status(9)
• struct ec_response_get_protocol_info(9)
• struct ec_response_flash_info(9)
• struct ec_response_flash_info_1(9)
• struct ec_params_flash_read(9)
• struct ec_params_flash_write(9)
• struct ec_params_flash_erase(9)
• struct ec_params_flash_erase_v1(9)
• struct ec_params_flash_protect(9)
• struct ec_response_flash_protect(9)
• struct ec_params_flash_region_info(9)
• struct ec_params_flash_select(9)
• struct ec_params_cec_write(9)
• struct ec_params_cec_read(9)
• struct ec_response_cec_read(9)
• struct ec_params_cec_set(9)
• struct ec_params_cec_get(9)
• struct ec_response_cec_get(9)
• struct ec_response_cec_port_count(9)
• struct ec_params_battery_static_info(9)
• struct ec_response_battery_static_info(9)
• struct ec_params_battery_dynamic_info(9)
• struct ec_response_battery_dynamic_info(9)
• struct ec_params_charger_control(9)

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source/version: ./include/linux/platform_data · date: October 2026 — bye bestie, go write that CEC message 💖🫶