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Jared Sanchez b7fe01393a usb-drv-arc: defer SET_ADDRESS until status completion 
The generic USB core calls usb_drv_set_address() after starting the
zero-length status stage for SET_ADDRESS. On an iPod Video 5.5G connected
to a V-MODA VAMP VERZA, applying the address at that point causes the
accessory to reset the USB bus and enumeration does not continue.

Keep the generic USB core unchanged. In the ARC driver, capture a standard
device SET_ADDRESS request when its setup packet arrives and defer writing
REG_DEVICEADDR until the successful zero-length EP0 IN status transfer
completes. Clear any pending address on a new setup packet or USB bus reset.

With this driver-specific change the VAMP completes enumeration, iAP
authentication, 44.1 kHz digital-audio negotiation, and audio playback.

Tested on real hardware:
- Apple iPod Video 5.5G
- V-MODA VAMP VERZA over 30-pin USB
- 44.1 kHz digital audio playback

Development provenance:
The debugging process and patch preparation were performed with assistance
from OpenAI ChatGPT (GPT-5.6 Sol). I built and tested the firmware on the
hardware and verified the final behavior.

Change-Id: Ic9392d211dccda568fd42b06cb2b8853d4b8e893
2026-09-13 08:16:04 -04:00
..
asm asm: ARMv7-M: replace unity-gain write_samples() asm with memcpy 2026-07-15 22:56:05 -04:00
common dircache: use alloca to avoid VLA in struct extension 2026-08-18 16:55:09 +01:00
drivers ingenic: move the drivers the X1000 shares with other SoCs 2026-09-01 11:37:21 -04:00
export ipod6g: add hardware H.264 video playback 2026-09-13 08:07:59 -04:00
include 3ds: Port refactor. 2026-09-01 08:39:07 -04:00
kernel 3ds: Port refactor. 2026-09-01 08:39:07 -04:00
libc chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
reggen stm32h743: implement timer API 2026-07-11 17:23:36 -04:00
target usb-drv-arc: defer SET_ADDRESS until status completion 2026-09-13 08:16:04 -04:00
usbstack pcm_sink: allow per-sink swvol/hwvol selection 2026-08-14 22:39:13 +09:00
arabjoin.c
arabjoin.h unicode: Support characters beyond the first unicode plane 2025-09-12 09:24:30 -04:00
ata_idle_notify.c chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
backlight-sw-fading.c chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
backlight.c chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
bidi.c bidi: do not pass non-ASCII codepoints to ispunct() 2026-07-01 21:03:38 -04:00
buflib_malloc.c chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
buflib_mempool.c chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
chunk_alloc.c chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
COPYING
core_alloc.c Fix building Warble when configured as the iPod Video 2026-08-25 08:01:09 -04:00
debug.c chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
eeprom_settings.c chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
elf_loader.c chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
enc_base.c chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
events.c chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
firmware.make chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
font.c FS#13944 - FONT_UI loads the last loaded font not global_status.font_id 2026-06-30 13:29:23 -04:00
font_cache.c unicode: Support characters beyond the first unicode plane 2025-09-12 09:24:30 -04:00
general.c chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
hangul.c unicode: Support characters beyond the first unicode plane 2025-09-12 09:24:30 -04:00
lc-rock.c chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
linuxboot.c chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
logf.c chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
lru.c
panic.c chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
pcm.c pcm_sink: allow per-sink swvol/hwvol selection 2026-08-14 22:39:13 +09:00
pcm_mixer.c pcm_mixer: fix active_channels handling in mixer_handle_sampr_change 2026-07-23 21:17:13 -04:00
pcm_sampr.c chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
pcm_sw_volume.c swvol: Switch to using WANT_SWVOL_32 in pcm_sw_volume.c 2026-08-14 22:45:14 -04:00
powermgmt.c chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
profile.c chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
README
rolo.c chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
rom.lds h300: add support for ROM image generation 2020-10-26 01:37:42 +00:00
screendump.c chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
scroll_engine.c chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
sdmmc.c chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
sound.c audiohw: remove unused BALANCE_CAP and CLIPPING_CAP 2026-07-20 12:47:12 -04:00
SOURCES ipod6g: add hardware H.264 video playback 2026-09-13 08:07:59 -04:00
storage.c chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
system.c chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
timer.c chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
tuner.c chore: Get rid of *all* vestigal CVS '$Id:$' tags 2026-06-01 16:01:18 -04:00
usb.c ap80max: New hosted port 2026-08-13 17:55:06 -07:00

README 

See docs/README