linux/drivers/staging/line6/capture.c, branch master

ALSA: move line6 usb driver into sound/usb

2015-01-12T21:29:57Z

Promote line6 driver from staging to sound/usb/line6 directory, and maintain through sound subsystem tree. This commit just moves the code and adapts Makefile / Kconfig. The further renames and misc cleanups will follow. Signed-off-by: Takashi Iwai

staging: line6: Move audio endpoints to properties

2015-01-12T21:24:08Z

The device type can now be used to determine the addresses of the audio endpoints for the interface. Drop the conditional logic and make these values properties. Signed-off-by: Chris Rorvick Reviewed-by: Stefan Hajnoczi Signed-off-by: Greg Kroah-Hartman Signed-off-by: Takashi Iwai

staging/line6: blank line after declaration cleanup

2014-05-15T20:54:29Z

Fix coding style warnings reported by checkpath. Signed-off-by: Jerry Snitselaar Signed-off-by: Greg Kroah-Hartman

staging: line6: Fix coding style problem

2014-03-18T23:11:15Z

Fix style issue for eudyptula challenge Signed-off-by: Mikhail Boiko Signed-off-by: Greg Kroah-Hartman

staging: line6: drop CONFIG_LINE6_USB_DUMP_PCM

2013-01-20T23:56:59Z

The CONFIG_LINE6_USB_DUMP_PCM config option prints a hexdump of PCM audio data as URBs are sent and received. The usbmon feature should be used instead of manually dumping PCM URBs. There are a few advantages to using usbmon: * Can be turned on/off at runtime * Provides full USB-level traffic * tcpdump and wireshark support for powerful analysis * No driver-specific code is required This is the last user of line6_write_hexdump() so we drop it too. Signed-off-by: Stefan Hajnoczi Signed-off-by: Greg Kroah-Hartman

staging: line6: wrap >80 char lines in capture.c

2012-11-13T21:17:40Z

Signed-off-by: Stefan Hajnoczi Signed-off-by: Greg Kroah-Hartman

staging: line6: separate handling of buffer allocation and stream startup

2012-02-09T17:14:35Z

There are several features of the Line6 USB driver which require PCM data to be exchanged with the device: *) PCM playback and capture via ALSA *) software monitoring (for devices without hardware monitoring) *) optional impulse response measurement However, from the device's point of view, there is just a single capture and playback stream, which must be shared between these subsystems. It is therefore necessary to maintain the state of the subsystems with respect to PCM usage. We define several constants of the form LINE6_BIT_PCM___ with the following meanings: *) is one of -) ALSA: PCM playback and capture via ALSA -) MONITOR: software monitoring -) IMPULSE: optional impulse response measurement *) is one of -) PLAYBACK: audio output (from host to device) -) CAPTURE: audio input (from device to host) *) is one of -) BUFFER: buffer required by PCM data stream -) STREAM: actual PCM data stream The subsystems call line6_pcm_acquire() to acquire the (shared) resources needed for a particular operation (e.g., allocate the buffer for ALSA playback or start the capture stream for software monitoring). When a resource is no longer needed, it is released by calling line6_pcm_release(). Buffer allocation and stream startup are handled separately to allow the ALSA kernel driver to perform them at appropriate places (since the callback which starts a PCM stream is not allowed to sleep). Signed-off-by: Markus Grabner Signed-off-by: Greg Kroah-Hartman

staging: line6: fixed ALSA/PCM interaction

2011-12-10T03:26:09Z

The PCM subsystem in the Line6 driver is mainly used for PCM playback and capture by ALSA, but also has other tasks, most notably providing a low-latency software monitor for devices which don't support hardware monitoring (e.g., the TonePort series). This patch makes ALSA "play nicely" with the other components, i.e., prevents it from resetting the isochronous USB transfer while other PCM tasks (software monitoring) are running. Signed-off-by: Markus Grabner Signed-off-by: Greg Kroah-Hartman

staging: line6: fix memory leak in .hw_params()

2011-12-10T03:26:09Z

The .hw_params() pcm callback can be invoked multiple times in a row. Ensure that the URB data buffer is only allocated once. Signed-off-by: Stefan Hajnoczi Signed-off-by: Markus Grabner Signed-off-by: Greg Kroah-Hartman

staging/line6: Remove obsolete code

2011-12-08T20:33:48Z

This patch removes experimental code which is no longer used. Signed-off-by: Markus Grabner Signed-off-by: Greg Kroah-Hartman