Commit Graph

51 Commits

Author SHA1 Message Date
Daniel Mack 7629ad24f2 ASoC: add SOC_DOUBLE_EXT macro
Add a macro for double controls with special callback functions.

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2009-04-24 17:39:31 +01:00
Mark Brown 06f409d76f ASoC: Provide core support for symmetric sample rates
Many devices require symmetric configurations of capture and playback
data formats, often due to shared clocking but sometimes also due to
other shared playback and record configuration in the device. Start
providing core support for this by allowing the DAIs or the machine
to specify that the sample rates used should be kept symmetric.

A flag symmetric_rates is provided in the snd_soc_dai and
snd_soc_dai_link structures. If this is set in either of the DAIs or in
the machine then a constraint will be applied when a stream is already
open preventing any changes in sample rate.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2009-04-07 18:51:22 +01:00
Lopez Cruz, Misael ec67624d33 ASoC: Add GPIO support for jack reporting interface
Add GPIO support to jack reporting framework in ASoC using gpiolib calls.
The gpio support exports two new functions: snd_soc_jack_add_gpios and
snd_soc_jack_free_gpios.

Client drivers using gpio feature must pass an array of jack_gpio pins
belonging to a specific jack to the snd_soc_jack_add_gpios function. The
framework will request the gpios, set the data direction and request irq.
The framework will update power status of related jack_pins when an event on
the gpio pins comes according to the reporting bits defined for each gpio.

All gpio resources allocated when adding jack_gpio pins can be released
using snd_soc_jack_free_gpios function.

Signed-off-by: Misael Lopez Cruz <x0052729@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2009-03-04 14:47:38 +00:00
Mark Brown 6627a653bc ASoC: Push the codec runtime storage into the card structure
This is a further stage on the road to refactoring away the ASoC
platform device.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2009-01-27 10:30:54 +00:00
Mark Brown 5852973c12 Merge branch 'for-2.6.29' into for-2.6.30 2009-01-09 11:03:55 +00:00
Ian Molton 3e8e1952e3 ASoC: cleanup duplicated code.
Many codec drivers were implementing cookie-cutter copies of the function
that adds kcontrols to the codec.

This patch moves this code to a common function snd_soc_add_controls() in
soc-core.c and updates all drivers using copies of this function to use the
new common version.

[Edited to raise priority of error log message and document parameters.
 -- broonie]

Signed-off-by: Ian Molton <ian@mnementh.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2009-01-09 10:39:49 +00:00
Mark Brown 8a2cd6180f ASoC: Add jack reporting interface
This patch adds a jack reporting interface to ASoC.  This wraps the ALSA
core jack detection functionality and provides integration with DAPM to
automatically update the power state of pins based on the jack state.

Since embedded platforms can have multiple detecton methods used for a
single jack (eg, separate microphone and headphone detection) the report
function allows specification of which bits are being updated on a given
report.

The expected usage is that machine drivers will create jack objects and
then configure jack detection methods to update that jack.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2009-01-09 10:31:31 +00:00
Peter Ujfalusi 741555568f ASoC: Merge the soc_value_enum to soc_enum struct
Merge the recently introduced soc_value_enum structure to the soc_enum.
The value based enums are still handled separately from the normal enum types,
but with the merge some of the newly introduced functions can be removed.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2009-01-08 13:09:52 +00:00
Peter Ujfalusi 2e72f8e371 ASoC: New enum type: value_enum
This patch introduces a new enum type.
In this enum type each enumerated items referred with a value.

This new enum type can handle enums encoded in bitfield, or any other
weird ways. twl4030 codec has several mux selection register, where the
input/output mux is coded in a bitfield. With the normal enum type this type
of mux can not be handled in a clean way.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2009-01-05 17:47:17 +00:00
Mark Brown 0d0cf00a7f ASoC: Add codec registration API
Another part of the backporting of Liam's ASoC v2 work. Using this is
more complicated than the other registration types since currently the
codec is instantiated during the probe of the ASoC device so we can't
currently readily wait for the codec to register.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-10 15:40:02 +00:00
Mark Brown 12a48a8c00 ASoC: Add platform registration API
ASoC v2 allows platform drivers to instantiate independantly of the
overall ASoC card. This API allows drivers to notify the core when
they are registered.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-09 10:49:27 +00:00
Mark Brown c5af3a2e19 ASoC: Add card registration API
ASoC v2 allows cards, codecs and platforms to instantiate separately,
with the overall ASoC device only being instantiated once all the
required components have registered. As part of backporting Liam's work
introduce an initial version of the card registration functions. At
present these do nothing active and are internal only, they will be
exposed to machine drivers after further backporting.  Adding this now
allows the datastructures used for dynamic card instantiation to be
built up gradually.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-09 10:49:26 +00:00
Mark Brown 32c8dabc97 ASoC: Remove obsolete declaration of struct snd_soc_clock_info
The struct is never defined.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-04 11:17:02 +00:00
Mark Brown 07c84d0409 ASoC: Remove device from platform suspend and resume operations
None of the platforms are actually using the SoC device so remove it
(only atmel actually has a suspend method).

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-03 18:27:10 +00:00
Mark Brown 384c89e2e4 ASoC: Push debugfs files out of the snd_soc_device structure
This is in preparation for the removal of struct snd_soc_device.

The pop time configuration should really be a property of the card not
the codec but since DAPM currently uses the codec rather than the card
using the codec is fine for now.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-03 18:27:04 +00:00
Mark Brown 87689d567a ASoC: Push platform registration down into the card
As part of the deprecation of snd_soc_device push the registration of
the platform down into the card structure.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-02 16:03:40 +00:00
Mark Brown 6308419a19 ASoC: Push workqueue data into snd_soc_card
ASoC v2 does not use the struct snd_soc_device at runtime, using struct
snd_soc_card as the root of the card.  Begin removing data from
snd_soc_device by pushing the workqueue data into snd_soc_card, using a
backpointer to the snd_soc_device to keep things going for the time
being.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-02 15:16:23 +00:00
Mark Brown 968a6025aa ASoC: Rename snd_soc_register_card() to snd_soc_init_card()
Currently ASoC card initialisation is completed by a function called
snd_soc_register_card().  As part of the work to allow independant
registration of cards, codecs and machines in ASoC v2 a new function of
the same name has been added so rename the existing function to
facilitate the merge of v2.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-12-01 19:58:50 +00:00
Mark Brown 3ba9e10a6d ASoC: Remove DAI type information
DAI type information is only ever used within ASoC in order to special
case AC97 and for diagnostic purposes. Since modern CPUs and codecs
support multi function DAIs which can be configured for several modes
it is more trouble than it's worth to maintain anything other than a
flag identifying AC97 DAIs so remove the type field and replace it with
an ac97_control flag.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-11-24 18:01:31 +00:00
Mark Brown a47cbe7263 ASoC: Move DAI structure definitions into new soc-dai.h
ASoC v2 factors most of the contents of soc.h out into separate headers,
including soc-dai.h for the DAI. Factor the existing DAI API out into
this file in order to prepare for backporting of the ASoC v2 DAI API.
Also backport some of Liam's improvements to the documentation.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-11-21 14:02:08 +00:00
Mark Brown 875065491f ASoC: Rename snd_soc_card to snd_soc_machine
One of the issues with the ASoC v1 API which has been addressed in the
ASoC v2 work that Liam Girdwood has done is that the ALSA card provided
by ASoC is distributed around the ASoC structures. For example, machine
wide data such as the struct snd_card are maintained as part of the
CODEC data structure, preventing the use of multiple codecs. This has
been addressed by refactoring the data structures so that all the data
for the ALSA card is contained in a single structure snd_soc_card which
replaces the existing snd_soc_machine and snd_soc_device.

Begin the process of backporting this by renaming struct snd_soc_machine
to struct snd_soc_card, better reflecting its function and bringing it
closer to standard ALSA terminology.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-11-21 14:02:01 +00:00
Mark Brown ca3ea02e90 ASoC: Remove unused snd_soc_machine_config declaration
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-11-18 20:40:36 +00:00
Mark Brown ea913940c3 ASoC: Remove core version number
Rather than try to remember to keep the core version number updated
(which hasn't been happening) just remove it.  It was much more useful
when ASoC was out of tree.

Signed-off-by: Mark brown <broonie@opensource.wolfsonmicro.com>
2008-11-05 22:11:29 +00:00
Takashi Iwai 04172c0b9e Merge branch 'topic/fix/asoc' into topic/asoc 2008-10-31 14:39:49 +01:00
Troy Kisky 12ef193d58 ASoC: Allow setting codec register with debugfs filesystem
i.e. echo 6 59 >/sys/kernel/debug/soc-audio.0/codec_reg
will set register 0x06 to a value of 0x59.
Also, pop_time debugfs interface setup is moved so that it
is setup in the same function as codec_reg

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2008-10-30 14:34:02 +00:00
Mark Brown 762b8df748 ALSA: ASoC: Fix mono controls after conversion to support full int masks
When ASoC was converted to support full int width masks SOC_SINGLE_VALUE()
omitted the assignment of rshift, causing the control operatins to report
some mono controls as stereo. This happened to work some of the time due
to a confusion between shift and min in snd_soc_info_volsw().

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-10-30 14:24:41 +01:00
Jon Smirl 815ecf8dec ALSA: ASoC: convert use of uint to unsigned int
ASOC: convert use of uint to unsigned int

Signed-off-by: Jon Smirl <jonsmirl@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-07-29 21:32:29 +02:00
Jon Smirl f8ba0b7bfd ALSA: ASoC: Rename mask to max to reflect usage
Most of the ASoC controls refer to the maximum value that can be set for
a control as mask but there is no actual requirement for all bits to be
set at the highest possible value making the name mask misleading.
Change the code to use max instead.

Signed-off-by: Jon Smirl <jonsmirl@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-07-29 21:32:18 +02:00
Jon Smirl 4eaa9819dc ALSA: ASoC: Convert bitfields in ASoC into full int width
Convert bitfields in ASoC into full int width. This is a
simple mechanical conversion. Two places in the DAPM code
were fixed to properly use mask.

Signed-off-by: Jon Smirl <jonsmirl@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-07-29 21:32:16 +02:00
Mark Brown 58cd33c0f3 ALSA: ASoC: Allow codecs to override register display
Some codecs have unusual features in their register maps such as very
large registers representing arrays of coefficients. Support these
codecs in the register cache sysfs file by allowing them to provide a
function register_display() overriding the default output for register
contents.

Also ensure that we don't overflow PAGE_SIZE while writing out the
register dump.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-07-29 21:32:15 +02:00
Liam Girdwood 8c6529dbf8 ALSA: asoc: core - add Digital Audio Interface (DAI) control functions.
This patch adds several functions for DAI control and config
and replaces the current method of calling function pointers within
the DAI struct.

Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-07-10 09:32:50 +02:00
Liam Girdwood 3c4b266fe6 ALSA: asoc: core - merge structs snd_soc_codec_dai and snd_soc_cpu_dai.
This patch series merges struct snd_soc_codec_dai and struct
snd_soc_cpu_dai into struct snd_soc_dai in preparation for further
ASoC v2 patches.

This merger removes duplication in both DAI structures and simplifies
the API for other users.

Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-07-10 09:32:32 +02:00
Andy Green 6ed2597883 ALSA: ASoC: Don't block system resume
On OpenMoko soc-audio resume is taking 700ms of the whole resume time of
1.3s, dominated by writes to the codec over I2C.  This patch shunts the
resume guts into a workqueue which then is done asynchronously.

The "card" is locked using the ALSA power state APIs as suggested by
Mark Brown.

[Added fix for race with resume to suspend and fixed a couple of nits
from checkpatch -- broonie.]

Signed-off-by: Andy Green <andy@openmoko.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-06-16 09:32:31 +02:00
Mike Montour 10144c09a0 ALSA: ASoC: Add SOC_SINGLE_EXT_TLV control type
Signed-off-by: Mike Montour <mail@mmontour.net>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-06-13 16:48:13 +02:00
Mark Brown bdb92876f0 ALSA: ASoC: Pass the DAI being configured into CPU DAI probe and remove
This allows per-DAI initialisation to be done by the CPU DAI drivers.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-06-13 16:48:01 +02:00
Mark Brown e13ac2e9b1 [ALSA] ASoC: Add SOC_DOUBLE_S8_TLV control type
The SOC_DOUBLE_S8_TLV control type was originally implemented in the
UDA1380 driver by Philipp Zabel and was moved into the core by me.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-05-29 08:10:49 +02:00
Mark Brown 0be9898adb [ALSA] ASoC: Clarify API for bias configuration
Currently the ASoC core configures the bias levels in the system using
a callback on codecs and machines called 'dapm_event', passing it PCI
style power levels as SNDRV_CTL_POWER_ constants. This is more obscure
than it needs to be and has caused confusion to driver authors,
especially given that DAPM is also performing power management.

Address this by renaming the callback function to 'set_bias_level' and
using constants explicitly representing the off, standby, pre-on and on
states which DAPM transitions through.

Also unexport the API for setting bias level: there are currently no
in-tree users of this API other than the core itself and it is likely
that the core would need to be extended to cater for any users.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Jarkko Nikula <jarkko.nikula@nokia.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-05-19 17:28:43 +02:00
Mark Brown 1ef6ab75c7 [ALSA] ASoC: Make CPU and codec DAI operations have same type
The CPU and codec DAI operations differ only in the presence of the
digital mute operation for the codec so they may as well be the same
type.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-05-19 13:19:20 +02:00
Philipp Zabel 392abe9cb3 [ALSA] ASoC: build fix for snd_soc_info_bool_ext
I suspect that snd_ctl_boolean_mono should have been
snd_ctl_boolean_mono_info instead. This fixes the build for magician.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-05-13 14:47:44 +02:00
Mark Brown 0a22b87de0 [ALSA] Bump ASoC core version number
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:29:51 +01:00
Liam Girdwood 4ccab3e72e [ALSA] soc - Ensure PCMs are suspended
This fixes a bug whereby PCMs were not being suspended when the rest of the
audio subsystem was suspended.

Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:29:50 +01:00
Philipp Zabel a7a4ac86b4 [ALSA] ASoC TLV support
Add TLV support to ASoC.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:29:50 +01:00
Liam Girdwood 0b4d221b8d [ALSA] soc - Add device level DAPM event
Added a device level dapm event so that both the machine and codec are informed
when dapm events occur.

Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:29:50 +01:00
Takashi Iwai 9004acc70e [ALSA] Remove sound/driver.h
This header file exists only for some hacks to adapt alsa-driver
tree.  It's useless for building in the kernel.  Let's move a few
lines in it to sound/core.h and remove it.
With this patch, sound/driver.h isn't removed but has just a single
compile warning to include it.  This should be really killed in
future.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:29:48 +01:00
Takashi Iwai a5ce88909d [ALSA] Clean up with common snd_ctl_boolean_*_info callbacks
Clean up codes using the new common snd_ctl_boolean_*_info() callbacks.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-10-16 15:57:45 +02:00
Liam Girdwood a68660e0c6 [ALSA] ASoC AC97 device reg bugfix
This patch fixes a bug whereby AC97 bus device data was being clobbered
when AC97 codecs using the generic ac97_codec.c driver were being
registered. Codecs that didn't use the generic driver were unaffected
(e.g. WM9712, WM9713).
Changes:-
 o Add new AC97 codec class for custom (or need bus dev registration)
AC97 codecs.
 o Only register/deregister this custom codec device with the AC97 bus.
The generic AC97 driver already does this for generic codec devices.
This may be related to bug #3038 :-
https://bugtrack.alsa-project.org/alsa-bug/view.php?id=3038

Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-05-16 11:45:28 +02:00
Graeme Gregory 1c433fbda4 [ALSA] soc - 0.13 ASoC headers
This patch updates the API's to include the new DAI configuration and
clocking architecture.
Changes:-
 o Removed DAI automatic matching and capabilities structure (struct
snd_soc_dai_mode) and macros.
 o Added DAI operations for codec and CPU interfaces.
 o Removed config_sysclk() function and struct snd_soc_clock_info. No
longer needed as clocking is now configured manually in the machine
drivers. Also removed other clocking data from structures.
 o Updated version to 0.13
 o Added shift to SOC_SINGLE_EXT kcontrol macro.

Signed-off-by: Graeme Gregory <gg@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-02-09 09:03:35 +01:00
Takashi Iwai 1321b160fa [ALSA] soc - Fix delayed_work related changes on 2.6.20 kernel
Fix the changes realted to delayed_work in soc/codecs/wm8750.c.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-02-09 09:02:44 +01:00
Andrew Morton 4484bb2e93 [ALSA] Fix the soc code after dhowells workqueue changes.
From: Andrew Morton <akpm@osdl.org>
I converted the workqueues to per-device while I was there.  It seems
strange to create a new kernel thread (on each CPU!) and to then only
have a single global work to ever be queued upon it.
Plus without this, I'd have to use the _NAR stuff, gawd help me.
Does that workqueue really need to be per-cpu?
Does that workqueue really need to exist?  Why not use keventd?
Cc: Takashi Iwai <tiwai@suse.de>
Cc: David Howells <dhowells@redhat.com>

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-02-09 09:02:26 +01:00
Liam Girdwood a71a468a50 [ALSA] ASoC: Add support for BCLK based on (Rate * Chn * Word Size)
This patch adds support for the DAI BCLK to be generated by multiplying
Rate * Channels * Word Size (RCW).
This now gives 3 options for BCLK clocking and synchronisation :-
 1. BCLK = Rate * x
 2. BCLK = MCLK / x
 3. BCLK = Rate * Chn * Word Size.  (New)
Changes:-
 o Add support for RCW generation of BCLK
 o Update Documentation to include RCW.
 o Update DAI documentation for label = value DAI modes.
 o Add RCW support to wm8731, wm8750 and pxa2xx-i2s drivers.

Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-02-09 09:01:07 +01:00