STRUCT BCM_DEVICE_DATA(9)

💖 struct bcm_device_data(9) — the kernel API manual, but make it cute 🎀

okay so bestie, this is the manual page for struct bcm_device_data(9) — yes, the man page itself is literally called struct bcm_device_data, and it's all about device specific data. that's the whole vibe. it's a little struct that holds the per-device quirks for the Bluetooth HCI BCM driver, and honestly? she's small but she's doing a LOT. 💅

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✨ NAME ✨

struct bcm_device_data — device specific data 🦋

like, literally just the device-specific bits. no cap. 🫶

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🌸 SYNOPSIS 🌸

here's the whole struct, copied exactly because we do not mess with code in this house:

struct bcm_device_data {
    bool no_early_set_baudrate;
    bool drive_rts_on_open;
    bool no_uart_clock_set;
    u32 max_autobaud_speed;
    u32 max_speed;
 };

look at her. five members. iconic. 👑

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⭐ Members ⭐

okay so let's meet the cast, one member at a time 💖

• no_early_set_baudrate — this one means disallow set baudrate before driver setup. so like, no touching the baudrate early, bestie, the driver isn't ready yet. 🙈
• drive_rts_on_open — drive RTS signal on ->open when platform requires it. so on open, the RTS signal gets driven, but only when the platform requires it. platform said jump, we jump. 💅
• no_uart_clock_set — the UART clock set command for >3Mbps mode is unavailable. that command just isn't there for that mode, and this flag is how you know. 😭
• max_autobaud_speed — the max baudrate supported by device in autobaud mode. the ceiling for autobaud. ⭐
• max_speed — literally just the max baudrate supported. the max. the limit. periodt. 🔥

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🦋 SEE ALSO 🦋

• Kernel file ./drivers/bluetooth/hci_bcm.c — go read the source, iykyk 📖
• struct bcm_device(9) — her sibling struct, also slaying 🌈

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ngl, if you're poking at these flags without reading hci_bcm.c first, that's giving chaos main character energy. 💀 read the source first, bestie. 🧚

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and that's the page!! 🌸 this little gem lives in ./drivers/bluetooth and it's dated October 2026 — so mark your calendar, she's from the future ✨💜