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* ALSA: snd-usb: fix some typos in endpoint.c documentationDaniel Mack2012-04-241-25/+33
| | | | | | | Also be more specific about some details while at it. Signed-off-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: usb-audio: sound/usb/endpoint.c: suppress warningAndrew Morton2012-04-241-1/+1
| | | | | | | | | sound/usb/endpoint.c: In function 'queue_pending_output_urbs': sound/usb/endpoint.c:298: warning: 'packet' may be used uninitialized in this function Cc: Daniel Mack <zonque@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: usb: Fix fill_max flag setTakashi Iwai2012-04-131-1/+1
| | | | | | | | ep->fill_max is a 1 bit flag, thus it has to be boolean. sound/usb/endpoint.c: In function 'snd_usb_endpoint_set_params': sound/usb/endpoint.c:785: warning: overflow in implicit constant conversion Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: usb: Remove unused variableTakashi Iwai2012-04-131-1/+0
| | | | | | | sound/usb/endpoint.c: In function ‘deactivate_urbs’: sound/usb/endpoint.c:520:16: warning: unused variable ‘flags’ [-Wunused-variable] Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: snd-usb: add some documentationDaniel Mack2012-04-131-11/+171
| | | | | | | | Document the new streaming code and some of the functions so that contributers can catch up easier. Signed-off-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: snd-usb: remove old streaming logicDaniel Mack2012-04-131-844/+6
| | | | | Signed-off-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: snd-usb: switch over to new endpoint streaming logicDaniel Mack2012-04-131-40/+0
| | | | | | | | | With the previous commit that added the new streaming model, all endpoint and streaming related code is now in endpoint.c, and pcm.c only acts as a wrapper for handling the packet's payload. Signed-off-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: snd-usb: implement new endpoint streaming modelDaniel Mack2012-04-131-11/+917
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a new generic streaming logic for audio over USB. It defines a model (snd_usb_endpoint) that handles everything that is related to an USB endpoint and its streaming. There are functions to activate and deactivate an endpoint (which call usb_set_interface()), and to start and stop its URBs. It also has function pointers to be called when data was received or is about to be sent, and pointer to a sync slave (another snd_usb_endpoint) that is informed when data has been received. A snd_usb_endpoint knows about its state and implements a refcounting, so only the first user will actually start the URBs and only the last one to stop it will tear them down again. With this sort of abstraction, the actual streaming is decoupled from the pcm handling, which makes the "implicit feedback" mechanisms easy to implement. In order to split changes properly, this patch only adds the new implementation but leaves the old one around, so the the driver doesn't change its behaviour. The switch to actually use the new code is submitted separately. Signed-off-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: usb-audio - Avoid flood of frame-active debug messagesTakashi Iwai2012-01-091-2/+3
| | | | | | | | | | | With some buggy devices, the usb-audio driver may give "frame xxx active" kernel messages too often. Better to keep it as debug-only using snd_printdd(), and also add the rate-limit for avoiding floods. Bugzilla: https://bugzilla.novell.com/show_bug.cgi?id=738681 Cc: <stable@kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: snd-usb: move code from urb.c to endpoint.cDaniel Mack2011-09-141-0/+948
| | | | | | | | | No code altered at this point, simply preparing for upcoming refactorizations. Signed-off-by: Daniel Mack <zonque@gmail.com> Acked-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: snd-usb: re-order codeDaniel Mack2011-09-141-433/+0
| | | | | | | | | | | | Move code from endpoint.c into a new file called stream.c and rename functions so that their names actually reflect what they're doing. This way, endpoint.c will be available to functions that hold all the endpoint logic. Signed-off-by: Daniel Mack <zonque@gmail.com> Acked-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: snd-usb: Accept UAC2 FORMAT_TYPE descriptors with bLength > 6Clemens Ladisch2011-08-041-1/+1
| | | | | | | | | | | The Focusrite Scarlett 18i6 USB has them that way, which is probably a bug. Anyway, the driver should simply ignore this fact. Signed-off-by: Daniel Mack <zonque@gmail.com> Reported-by: Nicolai Krakowiak <nicolai.krakowiak@gmail.com> Cc: stable@kernel.org Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: usb-audio - Add quirks for M-Audio Fast Track Pro and QuattroGuillaume Pellerin2011-07-121-0/+2
| | | | | | | | | | | | | | | | | | | This patch gives M-Audio Fast Track Pro and M-Audio Quattro quirks and endpoints to boot and setup those devices with special options (digital inputs and outputs, 24 bits mode, etc...). M-Audio Audiophile quirks are just adapted to match the new global M-Audio parameters. Special configurations can be then loaded through a modprobe conf file. For example, to set the 24 bits mode on the Fast Track Pro add /etc/modprobe.d/fast_track_pro.conf : options snd_usb_audio vid=0x763 pid=0x2012 device_setup=0x08 Here is a list of the possibilities in this example : http://files.parisson.com/debian/fast-track-pro.conf Signed-off-by: Guillaume Pellerin <yomguy@parisson.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* Merge branch 'fix/misc' into topic/miscTakashi Iwai2010-09-031-5/+6
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| * ALSA: usb-audio: fix detection of vendor-specific device protocol settingsClemens Ladisch2010-09-031-5/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Audio Class v2 support code in 2.6.35 added checks for the bInterfaceProtocol field. However, there are devices (usually those detected by vendor-specific quirks) that do not have one of the predefined values in this field, which made the driver reject them. To fix this regression, restore the old behaviour, i.e., assume that a device with an unknown bInterfaceProtocol field (other than UAC_VERSION_2) has more or less UAC-v1-compatible descriptors. [compile warning fixes by tiwai] Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Cc: Daniel Mack <daniel@caiaq.de> Cc: <stable@kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* | ALSA: usb-audio: fix Fast Track Ultra (8R) 44.1 sample ratesClemens Ladisch2010-09-021-2/+0
|/ | | | | | | | | | The M-Audio Fast Track Ultra series devices did not play sound correctly at 44.1/88.2 kHz. Changing the output endpoint attribute to adaptive fixes this. Signed-off-by: Felix Homann <fexpop@web.de> Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: usb-audio: simplify control interface accessDaniel Mack2010-06-231-0/+1
| | | | | | | | | | | As the control interface is now carried in struct snd_usb_audio, we can simplify the API a little and also drop the private ctrlif field from struct usb_mixer_interface. Also remove a left-over function prototype in pcm.h. Signed-off-by: Daniel Mack <daniel@caiaq.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: usb-audio: unify UAC macros and struct namesDaniel Mack2010-06-231-2/+2
| | | | | | | | | | Get rid of the last occurances of _v1 suffixes, and move the version number right after the "uac" string. Now things are consitent again. Sorry for the forth and back, but it just looks much nicer this way. Signed-off-by: Daniel Mack <daniel@caiaq.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: usb/endpoint, fix dangling pointer useJiri Slaby2010-06-211-0/+1
| | | | | | | | | | | | | | Stanse found that in snd_usb_parse_audio_endpoints, there is a dangling pointer dereference. When snd_usb_parse_audio_format fails, fp is freed, and continue invoked. On the next loop, there is "fp && fp->altsetting == 1 && fp->channels == 1" test, but fp is set from the last iteration (but is bogus) and thus ilegally dereferenced. Set fp to NULL before "continue". Signed-off-by: Jiri Slaby <jslaby@suse.cz> Acked-by: Daniel Mack <daniel@caiaq.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: usb-audio: parse clock topology of UAC2 devicesDaniel Mack2010-05-311-2/+55
| | | | | | | | | | | | | | | | | | | | | | | | | Audio devices which comply to the UAC2 standard can export complex clock topologies in its descriptors and set up links between them. The entities that are defined are - clock sources, which define the end-leafs. - clock selectors, which act as switch to select one out of many possible clocks sources. - clock multipliers, which have an input clock source, and act as clock source again. They can be used to derive one clock from another. All sample rate changes, clock validity queries and the like must go to clock source elements, while clock selectors and multipliers can be used as terminal clock source. The following patch adds a parser for these elements and functions to iterate over the tree and find the leaf nodes (clock sources). The samplerate set functions were moved to the new clock.c file. Signed-off-by: Daniel Mack <daniel@caiaq.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: usb-audio: parse UAC2 endpoint descriptors correctlyDaniel Mack2010-05-271-13/+42
| | | | | | | | | | | UAC2 devices have their information about pitch control stored in a different field. Parse it, and emulate the bits for a v1 device. A new struct uac2_iso_endpoint_descriptor is added. Signed-off-by: Daniel Mack <daniel@caiaq.de> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: usb-audio: parse more format descriptors with structsDaniel Mack2010-05-271-4/+7
| | | | | Signed-off-by: Daniel Mack <daniel@caiaq.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: usb - use of kmalloc/kfree requires the include of slab.hStephen Rothwell2010-03-291-0/+1
| | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: usbaudio: Add basic support for M-Audio Fast Track Ultra seriesFelix Homann2010-03-251-0/+2
| | | | | | | | | | | | This adds basic support for M-Audio's Fast Track Ultra series of USB audio interfaces. It is a refactored version of the patch Clemens Ladisch posted some time ago. Neither playback nor capturing work properly at 44100 Hz (don't know why). The other sampling rates work properly. There's no support for the DSP mixer, yet. Signed-off-by: Felix Homann <fexpop@web.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* linux/usb/audio.h: split headerDaniel Mack2010-03-121-0/+1
| | | | | | | | | | | | | - Split the audio.h file in two to clearly denote the differences between the standards. - Add many more defines to audio-v2.h. Most of them are not currently used. - Replaced a magic value with a proper define Signed-off-by: Daniel Mack <daniel@caiaq.de> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Cc: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: usb-audio: add support for samplerate setting on v2 devicesDaniel Mack2010-03-051-2/+2
| | | | | | | | | Sample rate setting is done with a 4-byte long class request that addresses the interface. Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: usb-audio: use a format bitmask per alternate settingClemens Ladisch2010-03-051-2/+2
| | | | | | | | In preparation for USB audio 2.0 support, change the audioformat structure so that it uses a bitmask to specify possible formats. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: usb-audio: refactor codeDaniel Mack2010-03-051-0/+358
Clean up the usb audio driver by factoring out a lot of functions to separate files. Code for procfs, quirks, urbs, format parsers etc all got a new home now. Moved almost all special quirk handling to quirks.c and introduced new generic functions to handle them, so the exceptions do not pollute the whole driver. Renamed usbaudio.c to card.c because this is what it actually does now. Renamed usbmidi.c to midi.c for namespace clarity. Removed more things from usbaudio.h. The non-standard drivers were adopted accordingly. Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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