History log of /linux-master/sound/soc/codecs/wm2000.c
Revision Date Author Comments
# 9abcd240 25-Apr-2023 Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

ASoC: Switch i2c drivers back to use .probe()

After commit b8a1a4cd5a98 ("i2c: Provide a temporary .probe_new()
call-back type"), all drivers being converted to .probe_new() and then
03c835f498b5 ("i2c: Switch .probe() to not take an id parameter") convert
back to (the new) .probe() to be able to eventually drop .probe_new() from
struct i2c_driver.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de
Link: https://lore.kernel.org/r/20230425095716.331419-1-u.kleine-koenig@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org


# 02004449 23-Jun-2022 Charles Keepax <ckeepax@opensource.cirrus.com>

ASoC: wm*: Remove now redundant non_legacy_dai_naming flag

The ASoC core has now been changed to default to the non-legacy DAI
naming, as such drivers using the new scheme no longer need to specify
the non_legacy_dai_naming flag.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220623125250.2355471-66-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>


# be2af740 14-May-2022 Yang Yingliang <yangyingliang@huawei.com>

ASoC: wm2000: fix missing clk_disable_unprepare() on error in wm2000_anc_transition()

Fix the missing clk_disable_unprepare() before return
from wm2000_anc_transition() in the error handling case.

Fixes: 514cfd6dd725 ("ASoC: wm2000: Integrate with clock API")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220514091053.686416-1-yangyingliang@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>


# 69b53a09 10-May-2022 Charles Keepax <ckeepax@opensource.cirrus.com>

ASoC: wm2000: Remove redundant endianness flag

The endianness flag is used on the CODEC side to specify an
ambivalence to endian, typically because it is lost over the hardware
link. This device has no DAI links and as such the flag would have
no effect, remove the redundant flag.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220510153843.1029540-1-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>


# 97b0b6e3 05-Apr-2022 Stephen Kitt <steve@sk2.org>

ASoC: wm*: use simple i2c probe function

The i2c probe functions here don't use the id information provided in
their second argument, so the single-parameter i2c probe function
("probe_new") can be used instead.

wm8731.c is excluded and will be submitted separately.

This avoids scanning the identifier tables during probes.

Signed-off-by: Stephen Kitt <steve@sk2.org>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220405122411.2096387-1-steve@sk2.org
Signed-off-by: Mark Brown <broonie@kernel.org>


# d2912cb1 04-Jun-2019 Thomas Gleixner <tglx@linutronix.de>

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

Based on 2 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>


# c5d09485 19-Oct-2018 Lucas Tanure <tanureal@opensource.cirrus.com>

ASoC: wm2000: Remove wm2000_read helper function

The return type "unsigned int" was used by the wm2000_read()
function despite of the aspect that it will eventually return
a negative error code.
The resulting function doesn't add much to the code, so replace
wm2000_read with regmap_read.

Signed-off-by: Lucas Tanure <tanureal@opensource.cirrus.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>


# e5449aff 28-Jan-2018 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

ASoC: wm2000: replace codec to component

Now we can replace Codec to Component. Let's do it.

Note:
xxx_codec_xxx() -> xxx_component_xxx()
.idle_bias_off = 0 -> .idle_bias_on = 1
.ignore_pmdown_time = 0 -> .use_pmdown_time = 1
- -> .endianness = 1
- -> .non_legacy_dai_naming = 1

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>


# bf0842ba 24-Nov-2017 Markus Elfring <elfring@users.sourceforge.net>

ASoC: wm2000: Improve a size determination in wm2000_i2c_probe()

Replace the specification of a data structure by a pointer dereference
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>


# cdbd9b0c 24-Nov-2017 Markus Elfring <elfring@users.sourceforge.net>

ASoC: wm2000: Fix a typo in a comment line

Delete a duplicate character in a word of this description.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>


# e866d87a 23-Nov-2017 Markus Elfring <elfring@users.sourceforge.net>

ASoC: wm2000: Delete an error message for a failed memory allocation in wm2000_i2c_probe()

Omit an extra message for a memory allocation failure in this function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>


# f802d6c0 31-Aug-2016 Julia Lawall <Julia.Lawall@lip6.fr>

ASoC: constify snd_soc_codec_driver structures

Check for snd_soc_codec_driver structures that are only passed to
snd_soc_register_codec or memcpy (2nd arg), for which the corresponding
parameters are declared const. Declare as const snd_soc_codec_driver
structures that have these properties.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r disable optional_qualifier@
identifier i;
position p;
@@
static struct snd_soc_codec_driver i@p = { ... };

@ok@
identifier r.i;
expression e1,e2,e3;
position p;
@@
(
snd_soc_register_codec(e1,&i@p,e2,e3)
|
memcpy(e1,&i@p,e2)
)

@bad@
position p != {r.p,ok.p};
identifier r.i;
@@
i@p

@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
struct snd_soc_codec_driver i = { ... };
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>


# fa54aade 11-Aug-2016 Charles Keepax <ckeepax@opensource.wolfsonmicro.com>

ASoC: wm2000: Fix return of uninitialised varible

Anything that sets ret in wm2000_anc_transition will have immediately
returned anyway as such we will always return an uninitialised ret at the
bottom of the function. Simply replace the return with a return 0;

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>


# bd22e11e 08-Aug-2016 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

ASoC: codec duplicated callback function goes to component on wm2000

codec driver and component driver has duplicated callback functions,
and codec side functions are just copied to component side when
register timing. This was quick-hack, but no longer needed.
This patch moves these functions from codec driver to component driver.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>


# 8444f59f 13-Oct-2015 Dan Carpenter <dan.carpenter@oracle.com>

ASoC: wm2000: a couple harmless underflows

We want these to be zero or one, but by mistake we also accept negative
values. It's harmless but we should still clean it up.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>


# 1c07a4de 14-Jul-2015 Krzysztof Kozlowski <krzk@kernel.org>

ASoC: drivers: Drop owner assignment from i2c_driver

i2c_driver does not need to set an owner because i2c_register_driver()
will set it.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>


# 00a14c29 09-Mar-2015 Takashi Iwai <tiwai@suse.de>

ASoC: wm2000: Fix wrong value references for boolean kctl

The correct values referred by a boolean control are
value.integer.value[], not value.enumerated.item[].
The former is long while the latter is int, so it's even incompatible
on 64bit architectures.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: <stable@vger.kernel.org>


# b96aef71 13-Jan-2015 Lars-Peter Clausen <lars@metafoo.de>

ASoC: wm2000: Replace w->codec snd_soc_dapm_to_codec(w->dapm)

The codec field of the snd_soc_widget struct is eventually going to be
removed, use snd_soc_dapm_to_codec(w->dapm) instead.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>


# a0f62118 20-Jun-2014 Sachin Kamat <sachin.kamat@samsung.com>

ASoC: wm2000: Remove redundant OOM message

Let memory subsystem handle the error logging.

Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@linaro.org>


# ea53bf77 18-Mar-2014 Lars-Peter Clausen <lars@metafoo.de>

ASoC: Add snd_soc_kcontrol_codec() helper function

For CODEC controls snd_kcontrol_chip() currently returns a pointer to the
CODEC that registered the control. With the upcoming consolidation of
platform and CODEC controls this will change. Prepare for this by introducing
the snd_soc_kcontrol_codec() helper function that will hide the implementation
details of how the CODEC for a control can be obtained. This will allow us to
change this easily in the future.

The patch also updates all CODEC drivers to use the new helper function.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@linaro.org>


# 5d6be5aa 10-Mar-2014 Xiubo Li <Li.Xiubo@freescale.com>

ASoC: codec: Simplify ASoC probe code.

For some CODEC drivers like who act as the MFDs children are ignored
by this patch.

Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com>
Signed-off-by: Mark Brown <broonie@linaro.org>


# bf90e895 05-Nov-2013 Takashi Iwai <tiwai@suse.de>

ASoC: wm2000: Use WARN_ON() instead of BUG_ON()

Use WARN_ON() and handle the error cases accordingly.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@linaro.org>


# 939dc51b 28-Mar-2013 Mark Brown <broonie@opensource.wolfsonmicro.com>

ASoC: wm2000: Expose some more registers for diagnostics

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>


# 3f3af6ee 30-Jan-2013 Mark Brown <broonie@opensource.wolfsonmicro.com>

ASoC: wm2000: Expose ANC gain adjustment

No TLV information since it's not actually a direct gain control.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>


# 8e9bb423 23-Jan-2013 Mark Brown <broonie@opensource.wolfsonmicro.com>

ASoC: wm2000: Lock state machine updates

Need to ensure we don't get confused by simultaneous updates.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>


# 33e7546e 21-Jan-2013 Mark Brown <broonie@opensource.wolfsonmicro.com>

ASoC: wm2000: Expose some additional registers

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>


# 267f8fa2 04-Jan-2013 Mark Brown <broonie@opensource.wolfsonmicro.com>

ASoC: wm2000: Fix sense of speech clarity enable

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: stable@vger.kernel.org


# d61100bb 13-Dec-2012 Mark Brown <broonie@opensource.wolfsonmicro.com>

ASoC: wm2000: Use clock API integration to configure MCLK divisor

Since we are now using the clock API integration to manage MCLK we can now
use clk_get_rate() to determine if we need to divide MCLK without relying
on platform data.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>


# 514cfd6d 13-Dec-2012 Mark Brown <broonie@opensource.wolfsonmicro.com>

ASoC: wm2000: Integrate with clock API

Request MCLK as a clock and then enable it when carrying out a state
transtion and while ANC is active, minimising system power consumption
in idle modes.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>


# 7a79e94e 07-Dec-2012 Bill Pemberton <wfp5p@virginia.edu>

ASoC: codecs: remove __dev* attributes

CONFIG_HOTPLUG is going away as an option. As result the __dev*
markings will be going away.

Remove use of __devinit, __devexit_p, __devinitdata, __devinitconst,
and __devexit.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>


# a5ccea22 26-Nov-2012 Mark Brown <broonie@opensource.wolfsonmicro.com>

ASoC: wm2000: Get the CODEC pointer from the widget

Don't rely on the kcontrol for robustness reasons, the widget mechanism
is what the framework uses.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>


# d0e12f3f 26-Sep-2012 Mark Brown <broonie@opensource.wolfsonmicro.com>

ASoC: wm2000: Correct register size

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: stable@vger.kernel.org


# a89be93c 22-Sep-2012 Mark Brown <broonie@opensource.wolfsonmicro.com>

ASoC: wm2000: Add regulator support

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>


# 8fed54ae 22-Sep-2012 Mark Brown <broonie@opensource.wolfsonmicro.com>

ASoC: wm2000: Convert to devm_regmap_init_i2c()

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>


# 3a4bfd88 06-Aug-2012 Sachin Kamat <sachin.kamat@linaro.org>

ASoC: wm2000: Use module_i2c_driver

module_i2c_driver makes the code simpler by eliminating module_init
and module_exit calls.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>


# 3ff1ec27 07-Jun-2012 Mark Brown <broonie@opensource.wolfsonmicro.com>

ASoC: wm2000: Always use a 4s timeout for the firmware

Rather than having varying timeouts depending on the transition always
use a 4s timeout. This provides better diagnostics for clocking errors
and ensures compatibility with current calibration firmwares.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>


# 51cc7ed3 31-May-2012 Mark Brown <broonie@opensource.wolfsonmicro.com>

ASoC: wm2000: Add register readability information

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>


# 656baaeb 22-May-2012 Mark Brown <broonie@opensource.wolfsonmicro.com>

ASoC: codecs: Refresh copyrights for Wolfson drivers

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>


# c83f1d7e 23-Jan-2012 Jesper Juhl <jj@chaosbits.net>

ASoC: wm2000: Fix use-after-free - don't release_firmware() twice on error

In wm2000_i2c_probe(), if we take the true branch in

"
ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_wm2000,
NULL, 0);
if (ret != 0)
goto err_fw;
"

then we'll release_firmware(fw) at the 'err_fw' label. But we've already
done that just a few lines above. That's a use-after-free bug.

This patch restructures the code so that we always call
release_firmware(fw) before leaving the function, but only ever call
it once.
This means that we have to initialize 'fw' to NULL since some paths
may now end up calling it without having called request_firmware(),
but since request_firmware() deals gracefully with NULL pointers, we
are fine if we just NULL initialize it.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>


# 4911ccdb 02-Dec-2011 Mark Brown <broonie@opensource.wolfsonmicro.com>

ASoC: Convert WM2000 into a standard CODEC driver

We've been able to handle external amps for a while now.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>


# 8aa1fe81 02-Dec-2011 Mark Brown <broonie@opensource.wolfsonmicro.com>

ASoC: Convert wm2000 to use regmap API

The driver wasn't even using the ASoC common code.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>


# b03e96e4 02-Dec-2011 Mark Brown <broonie@opensource.wolfsonmicro.com>

ASoC: Convert WM2000 to devm_kzalloc()

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>


# 997c2ea9 26-Nov-2011 Mark Brown <broonie@opensource.wolfsonmicro.com>

ASoC: Remove unneeded platform_device.h inclusions from CODECs

They've not been needed for a long time if they were ever required.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>


# b3111a9a 24-Feb-2011 Mark Brown <broonie@opensource.wolfsonmicro.com>

ASoC: Move WM2000 to dev_pm_ops

There's a general move to use dev_pm_ops rather than bus specific functions
in order to facilitate work on the PM core. Do this conversion to WM2000.
The driver ought to be updated to work better in a multi-component model
but the mechanical conversion ensures that we avoid blocking PM core work
until that happens.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>


# 505fb824 21-Nov-2010 Jarkko Nikula <jhnikula@gmail.com>

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>


# ce6120cc 05-Nov-2010 Liam Girdwood <lrg@slimlogic.co.uk>

ASoC: Decouple DAPM from CODECs

Decoupling Dynamic Audio Power Management (DAPM) from codec devices is
required when developing ASoC further. Such as for other ASoC components to
have DAPM widgets or when extending DAPM to handle cross-device paths.

This patch decouples DAPM related variables from struct snd_soc_codec and
moves them to new struct snd_soc_dapm_context that is used to encapsulate
DAPM context of a device. ASoC core and API of DAPM functions are modified
to use DAPM context instead of codec.

This patch does not change current functionality and a large part of changes
come because of structure and internal API changes.

Core implementation is from Liam Girdwood <lrg@slimlogic.co.uk> with some
minor core changes, codecs and machine driver conversions from
Jarkko Nikula <jhnikula@gmail.com>.

Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Manuel Lauss <manuel.lauss@googlemail.com>
Cc: Mike Frysinger <vapier.adi@gmail.com>
Cc: Cliff Cai <cliff.cai@analog.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Ryan Mallon <ryan@bluewatersys.com>
Cc: Timur Tabi <timur@freescale.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Arnaud Patard (Rtp) <arnaud.patard@rtp-net.org>
Cc: Wan ZongShun <mcuos.com@gmail.com>
Cc: Eric Miao <eric.y.miao@gmail.com>
Cc: Jassi Brar <jassi.brar@samsung.com>
Cc: Daniel Gloeckner <dg@emlix.com>
Cc: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>


# e71fa370 15-Jun-2010 Mark Brown <broonie@opensource.wolfsonmicro.com>

ASoC: Default WM2000 ANC and speaker to enabled

The most useful configuration for the WM2000 is to enable the ANC so turn
that on by default, and since we're not reflecting chip default state also
enable the speaker output by default.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>


# 78e4fd26 08-Apr-2010 Huang Weiyi <weiyi.huang@gmail.com>

ASoC: wm2000: remove unused #include <linux/version.h>

Remove unused #include <linux/version.h>('s) in
sound/soc/codecs/wm2000.c

Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>


# 5a0e3ad6 24-Mar-2010 Tejun Heo <tj@kernel.org>

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.

2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).

* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>


# 3a66d387 11-Feb-2010 Mark Brown <broonie@opensource.wolfsonmicro.com>

ASoC: Add WM2000 driver

The WM2000 is a low power, high quality handset receiver speaker
driver with Wolfson myZone™ Ambient Noise Cancellation (ANC). It
provides enhanced voice communication quality in a noisy environment
if the handset acoustics are designed appropriately.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>