bcm63xx_ep_dma_select(9)

✨ NAME ✨

bcm63xx_ep_dma_select(9) is the helper-function bestie from the Kernel API Manual for setting up the init_sel signal. That’s the whole assignment, and it ate. 💅

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✨ SYNOPSIS ✨

Exact signature, no cap:

void bcm63xx_ep_dma_select (struct bcm63xx_udc *udc , int idx );

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✨ ARGUMENTS ✨

• udc — reference to the device controller. Your main-character controller handle. 🫶
• idx — desired init_sel value. The value you want it to be, periodt. ✨

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✨ DESCRIPTION ✨

Okay so the "init_sel" signal is used as a selection index for both endpoints and IUDMA channels. But here’s the plot twist: they do not map 1:1, so how this signal gets used depends on the context. It’s context-dependent by design, iykyk. 🦋

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🌈 SEE ALSO 🌈

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

All the cross-refs, every single one, in their full iconic lineup:

• struct iudma_ch_cfg(9)
• struct iudma_ch(9)
• struct bcm63xx_ep(9)
• struct bcm63xx_req(9)
• struct bcm63xx_udc(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_cfg_iface(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)

That’s the whole friend group, no cap. 💖

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Sign-off: this page is from the source/version ./drivers/usb/gadget/udc, dated October 2026, and it’s bcm63xx_ep_dma_select(9). Slay, bye bestie. 💖✨🎀