hdlc_append(9)

💖 hdlc_append(9) 💖

okay bestie, welcome to the Kernel API Manual entry for hdlc_append(9) — manual name folded in right here like a lil name tag, because we’re doing this cute and correct. 🫶

🌸 NAME 🌸

hdlc_append — Queue a single HDLC byte for sending. 💌

✨ SYNOPSIS ✨

void hdlc_append (struct gb_beagleplay *bg , u8 value );

🎀 ARGUMENTS 🎀

• bg — beagleplay greybus driver. Like, that’s the driver bestie. 🐝
• value — hdlc byte to transmit. One byte, zero mystery. ✨

🔥 DESCRIPTION 🔥

Okay so big rule: the caller must hold tx_producer_lock and must have ensured sufficient space in the circular buffer before calling (see hdlc_tx_frames). No skipping the vibe check, fr fr. 🧚

👑 SEE ALSO 👑

Kernel file ./drivers/greybus/gb-beagleplay.c, plus the whole iconic cross-reference friend group:

• struct gb_beagleplay(9)
• struct hdlc_payload(9)
• struct hdlc_greybus_frame(9)
• enum cc1352_bootloader_cmd(9)
• enum cc1352_bootloader_status(9)
• struct cc1352_bootloader_packet(9)
• struct cc1352_bootloader_download_cmd_data(9)
• struct cc1352_bootloader_crc32_cmd_data(9)
• hdlc_write(9)
• hdlc_encoded_length(9)
• hdlc_tx_frames(9)
• csum8(9)
• cc1352_bootloader_pkt_rx(9)
• gb_message_send(9)
• cc1352_bootloader_empty_pkt(9)

💖 that’s the page, bestie — from the ./drivers/greybus source, October 2026, for hdlc_append(9), no cap. 🎀