Commit graph

8443 commits

Author SHA1 Message Date
Jassi Brar
b9493d6c33 ASoC: SMARTQ: Move to use new I2S driver
Modify the smartq_wm8987.c to use new i2s controller driver.

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-23 14:07:13 +00:00
Jassi Brar
1c7ac01807 ASoC: Samsung: Add common I2S driver
The I2S controllers since S3C64XX are incremental revisions, with
a new feature added to the last one. The programming i/f doesn't
conflict between these revisions, so it is possible to have one
common driver that could manage various versions of I2S (v3, 4 & 5)

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-23 14:06:58 +00:00
Jassi Brar
0068402c58 ASoC: Samsung: Rename s3c64xx I2S device
Since the I2S of S3C64XX and newer SoCs are incremental
versions of each other with changes managable in a single
driver, rename the 's3c64xx-iis' -> 'samsung-i2s'

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-23 14:06:47 +00:00
Jassi Brar
c3f2028b5b ASoC: Samsung: Generalize DMA driver namespace
Remove S3C,s3c from static defines.
	s3c_dma_ -> dma_
	s3c24xx_runtime_ -> runtime_
	s3c24xx_audio_ -> audio_
	s3c_preallocate_ -> preallocate_
	s3c24xx_soc_platform -> samsung_asoc_platform
	s3c24xx_pcm_driver -> asoc_dma_driver
	snd_s3c24xx_pcm_ -> samsung_asoc_

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-23 14:06:38 +00:00
Jassi Brar
158a782843 ASoC: Samsung: Rename PCM driver
Rename Samsung PCM Controller driver
	s3c-pcm.[c/h] -> pcm.[c/h]

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-23 14:06:27 +00:00
Jassi Brar
99ce3a3f37 ASoC: Samsung: Rename AC97 driver
Rename Samsung AC97 driver
	s3c-ac97.[c/h] -> ac97.[c/h]

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-23 14:05:42 +00:00
Jassi Brar
e6104673d2 ASoC: Samsung: Rename AC97 platform device
Call the AC97 controller devices found in S3C, S5P and newer
SoCs as 'samsung-ac97' rather than 's3c-ac97'.

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-23 14:05:29 +00:00
Jassi Brar
4b640cf309 ASoC: Samsung: Rename ASoC DMA driver
Rename Samsung ASoC DMA driver
	s3c-dma.[c/h] -> dma.[c/h]

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-23 14:05:08 +00:00
Jassi Brar
58bb407213 ASoC: Samsung: Rename DMA device
Some Samsung SoCs have a PCM(DSP) controller. So the name
s3c24xx-pcm-audio for DMA driver is not very appropraite.
This patch moves :-
	s3c24xx-pcm-audio -> samsung-audio

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-23 14:04:19 +00:00
Jassi Brar
3a56d0ca72 ASoC: Samsung: Remove redundant AQUILA driver
AQUILA and GONI are essentially the same h/w w.r.t ASoC.
They only differ by the fact that GONI has stereo speaker-out
whereas AQUILA has mono.

The difference can easily be handled in the same MACHINE driver
by making machine-specific runtime changes.

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-23 14:02:11 +00:00
Mark Brown
cbe80def41 Merge branch 'for-2.6.37' into for-2.6.38 2010-11-22 20:33:12 +00:00
Axel Lin
c7b642911e ASoC: Fix a memory leak in alc5623_i2c_probe error path
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-22 20:31:14 +00:00
Mark Brown
eba19fdd81 ASoC: Restore WM8994 volatile and readable register operations
They went AWOL during the multi-component merge.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-11-22 20:30:04 +00:00
Mark Brown
f71a4734b1 ASoC: Fix multi-component mismerge in WM8523
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-11-22 20:27:49 +00:00
Vasiliy Kulikov
b3915d1fb6 ASoC: atmel: test wrong variable
After clk_get() mclk is checked second time instead of pllb check.
In patch v1 Jarkko Nikula noticed that PTR_ERR() is also has wrong argument.

Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-22 20:26:44 +00:00
Jarkko Nikula
0d911baebf ASoC: Do not include soc-dai.h
There is no need to include soc-dai.h since soc.h includes it. Convert
drivers to include only soc.h.

Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-22 14:04:53 +00:00
Jarkko Nikula
505fb824e7 ASoC: Do not include soc-dapm.h
There is no need to include soc-dapm.h since soc.h includes it.

Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-22 14:04:41 +00:00
Jarkko Nikula
1c8f2c4287 ASoC: Fix compile breakage in jz4740.c and smartq_wm8987.c
Commit ce6120c require that soc-dapm.h cannot be included before soc.h but
these two drivers were not checked. Fix them by including only soc.h as it
includes soc-dapm.h.

Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-22 14:04:05 +00:00
Axel Lin
13a2e06c58 ASoC: stac9766 - set reg_cache_default to stac9766_reg
Looks like this is missing during multi-component conversion.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-22 14:03:35 +00:00
Vasiliy Kulikov
8575d93386 ASoC: s3c24xx: test wrong variable
After clk_get() mclk is checked three times instead of mout_epll
and sclk_spdif checks.

Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-22 14:03:22 +00:00
Mark Brown
9e18e1869f Merge branch 'next-samsung-asoc' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into for-2.6.38 2010-11-19 11:49:35 +00:00
Mark Brown
04af964f9c Merge branch 'for-2.6.37' into for-2.6.38 2010-11-19 11:45:05 +00:00
Mark Brown
7b306dae22 ASoC: Move WM8994 read/write access data into separate file
Makes the WM8994 driver file itself substantially smaller.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-11-19 11:44:41 +00:00
Axel Lin
2811fe2beb ASoC: uda134x - set reg_cache_default to uda134x_reg
After checking the code in 2.6.36,
I found this is missing during multi-component conversion.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-19 11:19:38 +00:00
Mark Brown
96b101efae ASoC: Provide ADC left/right channel source selection on WM8994
Allow the application to choose if the ADC data presented on the left
and right channels is sourced from the internal left or right channel.
This allows a mono recording to be presented as stereo on the external
bus.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-11-19 11:17:27 +00:00
Jesse Marroquin
fb762a5b37 ASoC: Add support for MAX98089 CODEC
This patch adds initial support for the MAX98089 CODEC.

Signed-off-by: Jesse Marroquin <jesse.marroquin@maxim-ic.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-18 10:56:04 +00:00
Mark Brown
3df94756fe Merge branch 'for-2.6.37' into for-2.6.38 2010-11-17 18:59:19 +00:00
Chris Paulson-Ellis
bedad0ca3f ASoC: davinci: fixes for multi-component
Multi-component commit f0fba2ad broke a few things which this patch should
fix. Tested on the DM355 EVM. I've been as careful as I can, but it would be
good if those with access to other Davinci boards could test.

--

The multi-component commit put the initialisation of
snd_soc_dai.[capture|playback]_dma_data into snd_soc_dai_ops.hw_params of the
McBSP, McASP & VCIF drivers (davinci-i2s.c, davinci-mcasp.c & davinci-vcif.c).
The initialisation had to be moved from the probe function in these drivers
because davinci_*_dai changed from snd_soc_dai to snd_soc_dai_driver.

Unfortunately, the DMA params pointer is needed by davinci_pcm_open (in
davinci-pcm.c) before hw_params is called. I have moved the initialisation to
a new snd_soc_dai_ops.startup function in each of these drivers. This fix
indicates that all platforms that use davinci-pcm must have been broken and
need to test with this fix.

--

The multi-component commit also changed the McBSP driver name from
"davinci-asp" to "davinci-i2s" in davinci-i2s.c without updating the board
level references to the driver name. This change is understandable, as there
is a similarly named "davinci-mcasp" driver in davinci-mcasp.c.

There is probably no 'correct' name for this driver. The DM6446 datasheet
calls it the "ASP" and describes it as a "specialised McBSP". The DM355
datasheet calls it the "ASP" and describes it as a "specialised ASP". The
DM365 datasheet calls it the "McBSP". Rather than fix this problem by
reverting to "davinci-asp", I've elected to avoid future confusion with the
"davinci-mcasp" driver by changing it to "davinci-mcbsp", which is also
consistent with the names of the functions in the driver. There are other
fixes required, so it was never going to be as simple as a revert anyway.

--

The DM365 only has one McBSP port (of the McBSP platforms, only the DM355 has
2 ports), so I've changed the the id of the platform_device from 0 to -1.

--

In davinci-evm.c, the DM6446 EVM can no longer share a snd_soc_dai_link
structure with the DM355 EVM as they use different cpu DAI names (the DM355
has 2 ports and the EVM uses the second port, but the DM6446 only has 1 port).
This also means that the 2 boards need different snd_soc_card structures.

--

The codec_name entries in davinci-evm.c didn't match the i2c ids in the board
files. I have only checked and fixed the details of the names used for the
McBSP based platforms. Someone with a McASP based platform (eg DA8xx) should
check the others.

Signed-off-by: Chris Paulson-Ellis <chris@edesix.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-17 18:36:40 +00:00
Mark Brown
11e713a07e ASoC: Fix register cache setup WM8994 for multi-component
During the multi-component conversion the WM8994 register cache init
got lost.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-11-17 18:32:51 +00:00
Mark Brown
84dab5671b ASoC: Use DAPM context rather than CODEC when constructing sequences
DAPM widgets may be associated with non-CODEC devices so compare based
on the DAPM context rather than the CODEC pointer.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Jarkko Nikula <jhnikula@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-11-16 11:40:14 +00:00
Axel Lin
ce0df3d79a ASoC: Fix incorrect kfree in wm8962_probe error path
We allocated memory for wm8962 in wm8962_i2c_probe,
and will free the memory in either wm8962_i2c_probe error path
or wm8962_i2c_remove.

Thus we should not call kfree(wm8962) in wm8962_probe, otherwise
we have double free of wm8962.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-16 11:24:16 +00:00
Axel Lin
01cbea3293 ASoC: Fix incorrect kfree in wm8731_probe error path
We allocated memory for wm8731 in wm8731_spi_probe / wm8731_i2c_probe,
and will free the memory in either wm8731_spi_probe / wm8731_i2c_probe
error path or wm8731_spi_remove / wm8731_i2c_remove.

Thus we should not call kfree(wm8731) in wm8731_probe, otherwise
we have double free of wm8731.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-16 11:24:04 +00:00
Axel Lin
4ab867d276 ASoC: Fix incorrect kfree in aic3x_probe error path
We allocated memory for aic3x in aic3x_i2c_probe,
and will free the memory in either aic3x_i2c_probe error path or
aic3x_i2c_remove.

Thus we should not call kfree(aic3x) in aic3x_probe, otherwise
we have double free of aic3x.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-16 11:23:50 +00:00
Axel Lin
50d0ac2e1e ASoC: Fix incorrect kfree in ad193x_probe error path
We allocated memory for ad193x in ad193x_spi_probe,
and will free the memory in either ad193x_spi_probe error path or
ad193x_spi_remove.

Thus we should not call kfree(ad193x) in ad193x_probe, otherwise
we have double free of ad193x.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-16 11:23:39 +00:00
Axel Lin
af353d8a13 ASoC: Fix incorrect kfree in ad1836_probe error path
We allocated memory for ad1836 in ad1836_spi_probe,
and will free the memory in either ad1836_spi_probe error path or
ad1836_spi_remove.

Thus we should not call kfree(ad1836) in ad1836_probe, otherwise
we have double free of ad1836.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-16 11:23:24 +00:00
Joe Perches
ef995e3a91 ASoC: Remove unnecessary semicolons
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-15 17:20:34 +00:00
Jarkko Nikula
ead9b9199c ASoC: Add optional name_prefix for codec kcontrol, widget and route names
There is a need to prefix codec kcontrol, widget and internal route names in
an ASoC machine that has multiple codecs with conflicting names. The name
collision would occur when codec drivers try to registering kcontrols with
the same name or when building audio paths.

This patch introduces optional prefix_map into struct snd_soc_card. With it
machine drivers can specify a unique name prefix to each codec that have
conflicting names with anothers. Prefix to codec is matched with codec
name.

Following example illustrates a machine that has two same codec instances.
Name collision from kcontrol registration is avoided by specifying a name
prefix "foo" for the second codec. As the codec widget names are prefixed
then second audio map for that codec shows a prefixed widget name.

static const struct snd_soc_dapm_route map0[] = {
	{"Spk", NULL, "MONO"},
};

static const struct snd_soc_dapm_route map1[] = {
	{"Vibra", NULL, "foo MONO"},
};

static struct snd_soc_prefix_map codec_prefix[] = {
	{
		.dev_name = "codec.2",
		.name_prefix = "foo",
	},
};

static struct snd_soc_card card = {
	...
	.prefix_map = codec_prefix,
	.num_prefixes = ARRAY_SIZE(codec_prefix),
};

Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-15 15:24:58 +00:00
Mark Brown
6ccd744123 Merge branch 'for-2.6.37' into for-2.6.38 2010-11-15 13:20:12 +00:00
Mark Brown
bcbb243396 ASoC: Fix dapm_seq_compare() for multi-component
Ensure that we keep all widget powerups in DAPM sequence by making
the CODEC the last thing we compare on rather than the first thing.
Also fix the fact that we're currently comparing the widget pointers
rather than the CODEC pointers when we do the substraction so we
won't get stable results.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-15 13:19:32 +00:00
Arnaud Patard (Rtp)
3c9e28e751 ASoC: Add support for OpenRD Ultimate
OpenRD Ultimate & Client are similar machines so enable OpenRD client sound
support on Ultimate too

Tested-by: Robas Teodor <teodor.robas@gmail.com>
Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-15 12:27:57 +00:00
Vasily Khoruzhick
ccb3b84fa0 ASoC: RX1950: Fix hw_params function
Unfortunatelly, I misunderstood datasheet, and on s3c244x-iis
when MPLLin source for master clock is selected, prescaler has
no effect. Remove dividor calculation for 44100 rate; remove 88200
rate at all, rx1950 can't do it.

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-15 12:27:08 +00:00
Mark Brown
f9a67059d4 ASoC: Prevent system suspend while debouncing wakeup capable GPIO jacks
If the device associated with a GPIO jack is wakeup capable then disable
suspend while we're debouncing the jack so that we skip suspends that race
with the jack.

Note that currently the GPIO based jack has a CODEC associated with it
which we're using right now. These jacks should be reparented against the
card itself and this code adjusted.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-11-15 11:44:43 +00:00
Mark Brown
cb2b3cf1fe ASoC: Reset WM8962 with default ID value
The value makes no odds and it makes life easier with caches.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-11-12 15:33:44 +00:00
Mark Brown
5cdc5c3e6e Merge branch 'for-2.6.37' into for-2.6.38 2010-11-11 16:00:49 +00:00
Dimitris Papastamos
a7f387d5af ASoC: soc-cache: Add support for rbtree based register caching
This patch adds support for rbtree compression when storing the
register cache.  It does this by not adding any uninitialized registers
(those whose value is 0).  If any of those registers is written
with a nonzero value they get added into the rbtree.

Consider a sample device with a large sparse register map.  The
register indices are between [0, 0x31ff].  An array of 12800 registers
is thus created each of which is 2 bytes.  This results in a 25kB
region.  This array normally lives outside soc-core, normally in the
driver itself.  The original soc-core code would kmemdup this region
resulting in 50kB total memory.  When using the rbtree compression
technique and __devinitconst on the original array the figures are
as follows.  For this typical device, you might have 100 initialized
registers, that is registers that are nonzero by default.  We build
an rbtree with 100 nodes, each of which is 24 bytes.  This results
in ~2kB of memory.  Assuming that the target arch can freeup the
memory used by the initial __devinitconst array, we end up using
about ~2kB bytes of actual memory.  The memory footprint will increase
as uninitialized registers get written and thus new nodes created in
the rbtree.  In practice, most of those registers are never changed.
If the target arch can't freeup the __devinitconst array, we end up
using a total of ~27kB.  The difference between the rbtree and the LZO
caching techniques, is that if using the LZO technique the size of
the cache will increase slower as more uninitialized registers get
changed.

Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-11 15:59:22 +00:00
Dimitris Papastamos
cc28fb8e7d ASoC: soc-cache: Add support for LZO register caching
This patch adds support for LZO compression when storing the register
cache.  The initial register defaults cache is marked as __devinitconst
and the only change required for a driver to use LZO compression is
to set the compress_type member in codec->driver to SND_SOC_LZO_COMPRESSION.

For a typical device whose register map would normally occupy 25kB or 50kB
by using the LZO compression technique, one can get down to ~5-7kB.  There
might be a performance penalty associated with each individual read/write
due to decompressing/compressing the underlying cache, however that should not
be noticeable.  These memory benefits depend on whether the target architecture
can get rid of the memory occupied by the original register defaults cache
which is marked as __devinitconst.  Nevertheless there will be some memory
gain even if the target architecture can't get rid of the original register
map, this should be around ~30-32kB instead of 50kB.

Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-11 15:59:01 +00:00
Dimitris Papastamos
7a30a3db34 ASoC: soc-cache: Add support for flat register caching
This patch introduces the new caching API and migrates the
old caching interface into the new one.  The flat register caching
technique does not use compression at all and it is equivalent to
the old caching technique.  One can still access codec->reg_cache
directly but this is not advised as that will not be portable
across different caching strategies.

None of the existing drivers need to be changed to adapt to this
caching technique.  There should be no noticeable overhead associated
with using the new caching API.

Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2010-11-11 15:58:41 +00:00
Mark Brown
84e909303d ASoC: Add DAPM trace events
Trace events for DAPM allow us to monitor the performance and behaviour
of DAPM with logging which can be built into the kernel permanantly, is
more suited to automated analysis and display and less likely to suffer
interference from other logging activity.

Currently trace events are generated for:

- Start and stop of DAPM processing
- Start and stop of bias level changes
- Power decisions for widgets
- Widget event execution start and stop

giving some view as to what is happening and where latencies occur.

Actual changes in widget power can be seen via the register write trace in
soc-core.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-11-11 14:54:31 +00:00
Mark Brown
a8b1d34f3e ASoC: Add trace events for ASoC register read/write
The trace subsystem provides a convenient way of instrumenting the kernel
which can be left on all the time with extremely low impact on the system
unlike prints to the kernel log which can be very spammy. Begin adding
support for instrumenting ASoC via this interface by adding trace for the
register access primitives.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-11-11 14:54:26 +00:00
Mark Brown
68f89ad8c2 ASoC: Factor out boiler plate for DAPM event generation
Make the DAPM sequence execution look a bit nicer by factoring out the
code to invoke an event into a single function since it's all the same
pretty much.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-11-11 14:54:15 +00:00