bcm63xx_update_cfg_iface(9)

💅 bcm63xx_update_cfg_iface(9) — like, the whole page

okay so bestie, we're in the Kernel API Manual today and the star of the show is bcm63xx_update_cfg_iface ✨ pull up a chair, this one's short but it matters.

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🌸 NAME 🌸

bcm63xx_update_cfg_iface — read the current configuration/interface settings, no big deal, just keeping us all in sync 💖

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🎀 SYNOPSIS 🎀

void bcm63xx_update_cfg_iface (struct bcm63xx_udc *udc );

that's it. that's the whole call. one argument, zero return, absolute icon behavior 👑

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🦋 ARGUMENTS 🦋

• udc — a reference to the device controller 🫶 hand it over and we're good.

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🔥 DESCRIPTION 🔥

so here's the vibe: this controller intercepts SET_CONFIGURATION and SET_INTERFACE messages. like, it just snatches them up before anyone else can even look at them 💅

the driver never sees the raw control packets coming in on the ep0 IUDMA channel — nope, not happening, not even a peek 🙈 but!! at least we get an interrupt event to tell us that new values are waiting in the USBD_STATUS register. so we're not completely in the dark, we just get the group-chat notification instead of the full message. slay for small mercies honestly ✨

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🧚 SEE ALSO 🧚

lowkey a whole friend group here, let's do the roll call 📋 — starting with the kernel file itself:

Kernel file ./drivers/usb/gadget/udc/bcm63xx_udc.c

• struct iudma_ch_cfg(9)
• struct iudma_ch(9)
• struct bcm63xx_ep(9)
• struct bcm63xx_req(9)
• struct bcm63xx_udc(9)
• bcm63xx_ep_dma_select(9)
• bcm63xx_set_stall(9)
• bcm63xx_fifo_setup(9)
• bcm63xx_fifo_reset_ep(9)
• bcm63xx_fifo_reset(9)
• bcm63xx_ep_init(9)
• bcm63xx_ep_setup(9)
• iudma_write(9)
• iudma_read(9)
• iudma_reset_channel(9)
• iudma_init_channel(9)
• iudma_init(9)
• iudma_uninit(9)
• bcm63xx_set_ctrl_irqs(9)
• bcm63xx_select_phy_mode(9)
• bcm63xx_select_pullup(9)
• bcm63xx_uninit_udc_hw(9)
• bcm63xx_init_udc_hw(9)
• bcm63xx_ep_enable(9)
• bcm63xx_ep_disable(9)
• bcm63xx_udc_alloc_request(9)
• bcm63xx_udc_free_request(9)
• bcm63xx_udc_queue(9)
• bcm63xx_udc_dequeue(9)
• bcm63xx_udc_set_halt(9)
• bcm63xx_udc_set_wedge(9)
• bcm63xx_ep0_setup_callback(9)
• bcm63xx_ep0_spoof_set_cfg(9)
• bcm63xx_ep0_spoof_set_iface(9)
• bcm63xx_ep0_map_write(9)
• bcm63xx_ep0_complete(9)
• bcm63xx_ep0_nuke_reply(9)
• bcm63xx_ep0_read_complete(9)
• bcm63xx_ep0_internal_request(9)
• bcm63xx_ep0_do_setup(9)
• bcm63xx_ep0_do_idle(9)
• bcm63xx_ep0_one_round(9)
• bcm63xx_ep0_process(9)
• bcm63xx_udc_get_frame(9)
• bcm63xx_udc_pullup(9)
• bcm63xx_udc_start(9)
• bcm63xx_udc_stop(9)
• bcm63xx_update_link_speed(9)
• bcm63xx_update_wedge(9)
• bcm63xx_udc_ctrl_isr(9)
• bcm63xx_udc_data_isr(9)
• bcm63xx_udc_init_debugfs(9)
• bcm63xx_udc_cleanup_debugfs(9)
• bcm63xx_udc_probe(9)
• bcm63xx_udc_remove(9)

yeah. that's the whole crew. read them, love them, iykyk 💜

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ngl there's no OPTIONS section here, no exit statuses, no env vars — this page is a snack-sized one and we respect that 🍓

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and that's the page!! brought to you from ./drivers/usb/gadget/udc, dated October 2026 — mwah, go read a driver, ily 💋