uclogic_probe_interface(9)

💅 uclogic_probe_interface — the Kernel API Manual, but make it make sense

okay bestie, so this is a page straight out of the Kernel API Manual and it's about uclogic_probe_interface. lowkey niche, highkey important. let's get into it 🫶

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✨ NAME ✨

uclogic_probe_interface — some tablets, like the Parblo A610 PLUS V2 or the XP-PEN Deco Mini 7, need to be initialized by sending them magic data.

like, literally magic. no cap. some tablets just won't wake up until you hit them with the ✨special bytes✨. it's giving "main character needs a little ritual to start the day" energy 💅

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🌸 SYNOPSIS 🌸

int uclogic_probe_interface (struct hid_device *hdev , const u8
*magic_arr , size_t magic_size , int endpoint );

that's the whole vibe check right there. four args, one int back. simple. iconic. periodt.

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🎀 ARGUMENTS 🎀

• hdev — The HID device of the tablet interface to initialize and get parameters from. Cannot be NULL. like genuinely do not do that, bestie, it's not a vibe 🙈
• magic_arr — The magic data that should be sent to probe the interface. Cannot be NULL. this is the actual magic, the whole point, the main character of the function 🪄
• magic_size — Size of the magic data. gotta tell it how much magic to send, obviously 💫
• endpoint — Endpoint where the magic data should be sent. yes, the magic has a destination. it's very "delivery address but for bytes" 📦

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🔥 RETURN 🔥

• Zero, if successful. slay 🎉
• A negative errno code on error. not slay 😭 but it's fine, at least it's honest about it.

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🦋 SEE ALSO 🦋

so there's a whole friend group of related stuff, and honestly the roster is long, so buckle up:

The source file itself, fr fr:

• Kernel file ./drivers/hid/hid-uclogic-params.c

And then the whole squad (all of them, in this exact order, no crumbs left behind):

• uclogic_params_pen_inrange_to_str(9)
• uclogic_params_pen_hid_dbg(9)
• uclogic_params_frame_hid_dbg(9)
• uclogic_params_hid_dbg(9)
• uclogic_params_get_str_desc(9)
• uclogic_params_pen_cleanup(9)
• uclogic_params_pen_init_v1(9)
• uclogic_params_get_le24(9)
• uclogic_params_pen_init_v2(9)
• uclogic_params_frame_cleanup(9)
• uclogic_params_frame_init_with_desc(9)
• uclogic_params_frame_init_v1(9)
• uclogic_params_cleanup_event_hooks(9)
• uclogic_params_cleanup(9)
• uclogic_params_get_desc(9)
• uclogic_params_init_invalid(9)
• uclogic_params_init_with_opt_desc(9)
• uclogic_params_huion_init(9)
• uclogic_params_parse_ugee_v2_desc(9)
• uclogic_params_ugee_v2_init_frame_buttons(9)
• uclogic_params_ugee_v2_init_frame_dial(9)
• uclogic_params_ugee_v2_init_frame_mouse(9)
• uclogic_params_ugee_v2_has_battery(9)
• uclogic_params_ugee_v2_init_battery(9)
• uclogic_params_ugee_v2_reconnect_work(9)
• uclogic_params_ugee_v2_init_event_hooks(9)
• uclogic_params_ugee_v2_init(9)
• uclogic_params_init(9)

like I said. whole squad. go say hi 💜

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heads up bestie: hdev and magic_arr both cannot be NULL, and if it goes wrong you get a negative errno code back, not a zero. check your returns, iykyk 💅

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that's the page!! 🎀 brought to you by ./drivers/hid, dated October 2026, living under the Kernel API Manual umbrella — mwah, go probe some tablets, you got this 💖✨