1
linux/sound
Liam Girdwood b8c0dab9bf ASoC: core - PCM mutex per rtd
In preparation for the new ASoC Dynamic PCM support (AKA DSP support).

The new ASoC Dynamic PCM core allows DAIs to be dynamically re-routed
at runtime between the PCM device end (or Frontend - FE) and the physical DAI
(Backend - BE) using regular kcontrols (just like a hardware CODEC routes
audio in the analog domain). The Dynamic PCM core therefore must be
able to call PCM operations for both the Frontend and Backend(s) DAIs at
the same time.

Currently we have a global pcm_mutex that is used to serialise
the ASoC PCM operations. This patch removes the global mutex
and adds a mutex per RTD allowing the PCM operations to be reentrant and
allow control of more than one DAI at at time. e.g. a frontend PCM hw_params()
could configure multiple backend DAI hw_params() with similar or different
hw parameters at the same time.

Signed-off-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-06-09 19:29:29 +01:00
..
aoa Revert wrong fixes for common misspellings 2011-04-26 23:31:11 -07:00
arm Merge branch 'for-2.6.39' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound-2.6 into for-2.6.39 2011-04-03 19:28:29 +09:00
atmel ALSA: fix invalid hardware.h include in ac97c for AVR32 architecture 2011-01-25 18:07:10 +01:00
core ALSA: core: remove unused variables. 2011-05-26 08:19:04 +02:00
drivers Fix common misspellings 2011-03-31 11:26:23 -03:00
firewire Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 2011-05-23 08:52:38 -07:00
i2c ALSA: tea575x: use better card and bus names 2011-05-13 19:43:24 +02:00
isa Fix common misspellings 2011-03-31 11:26:23 -03:00
mips sound: Add missing spin_unlock 2010-05-27 09:47:02 +02:00
oss SOUND: OSS: Remove Au1550 driver. 2011-05-20 11:33:39 +02:00
parisc
pci ALSA: fix hda AZX_DCAPS_NO_TCSEL quirk check in driver_caps 2011-05-27 19:45:28 -07:00
pcmcia pcmcia: Make struct pcmcia_device_id const, sound drivers edition 2011-05-11 10:48:57 +02:00
ppc Merge branch 'topic/misc' into for-linus 2011-05-22 10:01:29 +02:00
sh sound: sh: ctrl_in/outX to __raw_read/writeX conversion. 2010-10-27 15:53:50 +09:00
soc ASoC: core - PCM mutex per rtd 2011-06-09 19:29:29 +01:00
sparc dt/sound: Eliminate users of of_platform_{,un}register_driver 2011-02-28 13:22:44 -07:00
spi ALSA: AT73C213: Rectify misleading comment. 2010-11-11 02:03:29 +01:00
synth ALSA: emux: Add trivial compat ioctl handler 2010-09-14 16:18:11 +02:00
usb ALSA: usb-audio: more control quirks for M-Audio FastTrack devices 2011-05-25 09:37:08 +02:00
ac97_bus.c sound: Fixed line limit issue in sound/ac97_bus.c 2010-12-06 16:09:49 +01:00
Kconfig ALSA: add LaCie FireWire Speakers/Griffin FireWave Surround driver 2011-03-15 08:42:22 +01:00
last.c
Makefile ALSA: add LaCie FireWire Speakers/Griffin FireWave Surround driver 2011-03-15 08:42:22 +01:00
sound_core.c sound: Use sound_register_*() for additional OSS minor devices 2011-03-09 20:10:37 +01:00
sound_firmware.c sound: read i_size with i_size_read() 2011-03-18 15:14:57 +01:00