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Author SHA1 Message Date
Dana Conrad
7c4293af64 usbaudio: convert to asynchronous operation 
Add feedback not based on samples used, but on buffers filled - idea
being we can do "PID" (someone who has actually implemented Real PID
could probably rewrite the calculation) based on how many buffers
we have filled versus the ideal buffer filled level (16).

Feedback is based on a historical average of the last two feedback
intervals.

This feedback math is done as fixed-point math to keep floats out of core. Note that a couple division operations needed to be strategically staged to avoid overflow or truncation.

Floats are still used for debug screen printout.

Also fixed a typo in the definition of usb_audio_control_request()

Host:
Linux: works
MacOS: works
Windows: Feedback does not work! It appears that Windows may not
         support asynchronous devices at all. Playback may "work",
         but results will vary as the number of buffers filled will
         drift over time.

Change-Id: I027feb16705e6e46c1144b1d08920b53de42cb26
 2025-11-15 07:32:05 -05:00
Dana Conrad
9ce66e088e Add USB Audio 1.0 support 
Original commit credit to Amaury Pouly, Moshe Piekarski
Pushed across the finish line by Dana Conrad

To enable, see setting under General Settings --> System --> USB-DAC.
On devices with few endpoints, this may not work while HID and/or
mass storage is enabled.

Adds new dedicated mixer channel.

setting usb-dac can have values:
- never (0)
- always (1)
- while_charge_only (2)
- while_mass_storage (3)

Relevant devices are DWC2 and ARC usb controller devices. That being:
x1000 Native targets (m3k, erosqnative, q1, others...?),
sansac200, creativezenxfi2, vibe500, ipodmini2g,
ipod4g, creativezenxfi, creativezenxfi3, sansaview, ipodcolor,
creativezenxfistyle, samsungypz5, sansafuzeplus, iriverh10_5gb,
tatungtpj1022, gigabeats, faketarget, samsungyh820, gogearhdd1630, samsungyh925, ipodmini1g, ipodvideo, creativezenmozaic, sonynwze370, creativezen, gogearsa9200, gogearhdd6330, sonynwze360, sansae200, mrobe100, iriverh10, creativezenv, ipodnano1g, samsungyh920

USB Driver-wise, it should be noted that this patch requires some
slight changes:
- proper blocking on control OUT transfers, to make sure the data is
  received *before* using it, the usb_core should probably use that too
- drivers can now support interface alternate settings
- drivers can be notified of completion by a new fast handler, which
  is called directly from the driver; this is is necessary for
  isochronous transfers because going through the usb queue is way too
  slow

Designware changes:

- enable for USBOTG_DESIGNWARE
- set maxpacketsize to 1023 for ISO endpoints

Change-Id: I570871884a4e4820b4312b203b07701f06ecacc6
 2025-11-15 07:30:15 -05:00
Solomon Peachy
94d6265df0 gcc9: Move structure packing to the struct definition 
Silences GCC9 warnings about possible casting misalignments.

Change-Id: I2120638d4d143e9e539b7f240c31653ad55ae4e0
 2024-10-12 09:23:37 -04:00
Tomasz Moń
f3f9d1fb95 USB Serial: Implement Abstract Control Management 
On devices that can assign interrupt IN, bulk IN and bulk OUT endpoints
this change results in the serial interface working out of the box on
Linux and Windows. On Linux it is registered as ttyACM device and on
Windows it is assigned a COM port number.

On devices that cannot assign the interrupt IN this change won't have
any effect.

Implement minimum required interface control requests. Respond with
whatever line coding was set to make terminal programs happy.

Change-Id: Id7d3899d8546e45d7cb4ecc3fe464908cb59e810
 2021-06-12 14:47:15 +00:00
Andree Buschmann
64fb3e8df3 Fix more tabs 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24154 a1c6a512-1295-4272-9138-f99709370657
 2010-01-03 10:27:43 +00:00
Frank Gevaerts
08b04cc587 reorganise usb_core.c a bit, to make the code more readable and more maintainable (FS#10150 by Tomer Shalev)) 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20748 a1c6a512-1295-4272-9138-f99709370657
 2009-04-19 19:53:32 +00:00
Frank Gevaerts
14a510aff2 Sync from recent linux source (FS#10142, by Tomer Shalev) 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20729 a1c6a512-1295-4272-9138-f99709370657
 2009-04-18 16:52:12 +00:00
Daniel Stenberg
2acc0ac542 Updated our source code header to explicitly mention that we are GPL v2 or 
later. We still need to hunt down snippets used that are not. 1324 modified
files...
http://www.rockbox.org/mail/archive/rockbox-dev-archive-2008-06/0060.shtml


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17847 a1c6a512-1295-4272-9138-f99709370657
 2008-06-28 18:10:04 +00:00
Michael Sevakis
3dcb4ff97f Add keywords and fix more headers. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17157 a1c6a512-1295-4272-9138-f99709370657
 2008-04-18 17:24:19 +00:00
Frank Gevaerts
f712c7ff36 fix alignment and packed-ness of USB structs 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16455 a1c6a512-1295-4272-9138-f99709370657
 2008-02-29 18:33:54 +00:00
Frank Gevaerts
9dbe7f2a8c Improve usb descriptor handling. This should fix any cache and/or alignment related problem. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16371 a1c6a512-1295-4272-9138-f99709370657
 2008-02-22 20:38:31 +00:00
Frank Gevaerts
07427592a9 Major USB stack improvements. It now works at nearly the maximum speed for a full speed connection, and does seem stable. 
Still not enabled by default, #define USE_ROCKBOX_USB is still required to enable it.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16360 a1c6a512-1295-4272-9138-f99709370657
 2008-02-20 22:54:26 +00:00
Björn Stenberg
2f7cffa204 Major USB fixes by Frank Gevaerts. Still disabled in builds, #define USE_ROCKBOX_USB to test. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16279 a1c6a512-1295-4272-9138-f99709370657
 2008-02-11 14:26:25 +00:00
Christian Gmeiner
fec406c7a2 add some informations about this file 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15344 a1c6a512-1295-4272-9138-f99709370657
 2007-10-28 14:02:51 +00:00
Christian Gmeiner
f286bdec63 fix red and yellow - i hope and double content in some files.. dont ask how this could happen 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14473 a1c6a512-1295-4272-9138-f99709370657
 2007-08-27 16:26:56 +00:00
Christian Gmeiner
8181a0c905 Usb Stack: only setup packet handling, and not enabled by default as there is a lot to do. 
* settings code is not fully ready -> changing device driver has no effect
* clean ups
* check copyriths
* find a way to detect IN transfers
* support for full and highspeed
* ...




git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14470 a1c6a512-1295-4272-9138-f99709370657
 2007-08-27 16:04:32 +00:00