- 15 11月, 2010 1 次提交
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由 Jarkko Nikula 提交于
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: NJarkko Nikula <jhnikula@gmail.com> Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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- 11 11月, 2010 3 次提交
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由 Dimitris Papastamos 提交于
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: NDimitris Papastamos <dp@opensource.wolfsonmicro.com> Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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由 Dimitris Papastamos 提交于
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: NDimitris Papastamos <dp@opensource.wolfsonmicro.com> Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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由 Dimitris Papastamos 提交于
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: NDimitris Papastamos <dp@opensource.wolfsonmicro.com> Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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- 06 11月, 2010 3 次提交
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由 Jarkko Nikula 提交于
Based on discussion the dapm_pop_time in debugsfs should be per card rather than per device. Single pop time value for entire card is cleaner when the DAPM sequencing is extended to cross-device paths. debugfs/asoc/{card->name}/{codec dir}/dapm_pop_time -> debugfs/asoc/{card->name}/dapm_pop_time Signed-off-by: NJarkko Nikula <jhnikula@gmail.com> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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由 Jarkko Nikula 提交于
There will be need to have sound card specific debugfs entries. This patch introduces a new debugfs/asoc/{card->name}/ directory but does not add yet any entries there. Signed-off-by: NJarkko Nikula <jhnikula@gmail.com> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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由 Liam Girdwood 提交于
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: NLiam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: NJarkko 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: NMark Brown <broonie@opensource.wolfsonmicro.com>
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- 04 11月, 2010 1 次提交
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由 Mark Brown 提交于
Facilitating adding trace type stuff. For a first pass add some dev_dbg() statements into them. Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk>
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- 23 10月, 2010 1 次提交
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由 Kay Sievers 提交于
This patch removes the old CONFIG_SYSFS_DEPRECATED_V2 config option, but it keeps the logic around to handle block devices in the old manner as some people like to run new kernel versions on old (pre 2007/2008) distros. Signed-off-by: NKay Sievers <kay.sievers@vrfy.org> Cc: Jens Axboe <axboe@kernel.dk> Cc: Stephen Hemminger <shemminger@vyatta.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: "James E.J. Bottomley" <James.Bottomley@suse.de> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Tejun Heo <tj@kernel.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jaroslav Kysela <perex@perex.cz> Cc: Takashi Iwai <tiwai@suse.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: David Howells <dhowells@redhat.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 22 10月, 2010 1 次提交
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由 Arnaud Patard (Rtp) 提交于
This patch is adding support for alc562[123] codecs. It's based on the source code available in HP source code and other places. Signed-off-by: NArnaud Patard <arnaud.patard@rtp-net.org> Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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- 19 10月, 2010 1 次提交
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由 Mark Brown 提交于
This reverts commit f6765502 and adds the missing include file. Signed-off-by: NPeter Hsiang <Peter.Hsiang@maxim-ic.com> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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- 18 10月, 2010 1 次提交
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由 Nobuhiro Iwamatsu 提交于
CCR is defined in emu10k1, but SuperH is defined too. If user use this driver with SuperH, it becomes a double definition. Signed-off-by: NNobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Cc: Paul Mundt <lethal@linux-sh.org> Signed-off-by: NTakashi Iwai <tiwai@suse.de>
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- 17 10月, 2010 2 次提交
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由 Takashi Iwai 提交于
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
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由 Mike Frysinger 提交于
If we compile the ASoC code with PM disabled, we hit stuff like: sound/soc/soc-dapm.c: In function 'snd_soc_dapm_suspend_check': sound/soc/soc-dapm.c:440: warning: unused variable 'codec' So tweak the stub macro to avoid these issues. Signed-off-by: NMike Frysinger <vapier@gentoo.org> Signed-off-by: NTakashi Iwai <tiwai@suse.de>
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- 13 10月, 2010 1 次提交
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由 Mika Westerberg 提交于
With generic AC97 ASoC glue driver (codec/ac97.c), we get following warning when the device is registered (slightly stripped the backtrace): kobject (c5a863e8): tried to init an initialized object, something is seriously wrong. [<c00254fc>] (unwind_backtrace+0x0/0xec) [<c014fad0>] (kobject_init+0x38/0x70) [<c0171e94>] (device_initialize+0x20/0x70) [<c017267c>] (device_register+0xc/0x18) [<bf20db70>] (snd_soc_instantiate_cards+0x924/0xacc [snd_soc_core]) [<bf20e0d0>] (snd_soc_register_platform+0x16c/0x198 [snd_soc_core]) [<c0175304>] (platform_drv_probe+0x18/0x1c) [<c0174454>] (driver_probe_device+0xb0/0x16c) [<c017456c>] (__driver_attach+0x5c/0x7c) [<c0173cec>] (bus_for_each_dev+0x48/0x78) [<c0173600>] (bus_add_driver+0x98/0x214) [<c0174834>] (driver_register+0xa4/0x130) [<c001f410>] (do_one_initcall+0xd0/0x1a4) [<c0062ddc>] (sys_init_module+0x12b0/0x1454) This happens because the generic AC97 glue driver creates its codec->ac97 via calling snd_ac97_mixer(). snd_ac97_mixer() provides own version of snd_device.register which handles the device registration when snd_card_register() is called. To avoid registering the AC97 device twice, we add a new flag to the snd_soc_codec: ac97_created which tells whether the AC97 device was created by SoC subsystem. Signed-off-by: NMika Westerberg <mika.westerberg@iki.fi> Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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- 08 10月, 2010 1 次提交
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由 Mark Brown 提交于
Rather than block the workqueue by sleeping to do the debounce use delayed work to implement the debounce time. This should also means that we extend the debounce time on each new bounce, potentially allowing shorter debounce times for clean insertions. Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: NJarkko Nikula <jhnikula@gmail.com> Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk>
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- 03 10月, 2010 1 次提交
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由 Mark Brown 提交于
The WM8962 features five GPIOs, add support for controlling their output state via gpiolib. Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk>
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- 01 10月, 2010 1 次提交
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由 Mark Brown 提交于
Add the widget for MICBIAS power control and allow configuration of the microphone bias setup via the platform data for the WM8962. When microphone status signals are brought out to GPIO this should be sufficient to enable microphone detection. Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk>
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- 29 9月, 2010 1 次提交
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由 Mark Brown 提交于
Provide an initial hookup for interrupts on the WM8962. Currently we simply report error status via log messages if an IRQ is provided for the device. Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk>
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- 07 9月, 2010 1 次提交
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由 Mark Brown 提交于
Some devices have more flexible microphone detection and can detect a wider range of buttons. Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: NTakashi Iwai <tiwai@suse.de>
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- 06 9月, 2010 1 次提交
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由 Mark Brown 提交于
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk>
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- 31 8月, 2010 2 次提交
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由 Kuninori Morimoto 提交于
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com> Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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由 Jarkko Nikula 提交于
Swapping the bias level enumeration is only meant to help debugging. It is easier if number 0 means bias off and bigger number means bigger bias level. Signed-off-by: NJarkko Nikula <jhnikula@gmail.com> Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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- 19 8月, 2010 1 次提交
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由 Jaroslav Kysela 提交于
The current code in pcm_lib.c do all checks using only the position in the ring buffer. Unfortunately, where the interrupts gets delayed or merged into one, we need another timing source to check when the buffer size boundary overlaps to avoid the wrong updating of the ring buffer pointers. This code uses jiffies to check the right time window without any performance impact. Signed-off-by: NJaroslav Kysela <perex@perex.cz>
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- 18 8月, 2010 2 次提交
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由 Jaroslav Kysela 提交于
The current code in pcm_lib.c do all checks using only the position in the ring buffer. Unfortunately, where the interrupts gets delayed or merged into one, we need another timing source to check when the buffer size boundary overlaps to avoid the wrong updating of the ring buffer pointers. This code uses jiffies to check the right time window without any performance impact. Signed-off-by: NJaroslav Kysela <perex@perex.cz> Signed-off-by: NTakashi Iwai <tiwai@suse.de>
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由 Jaroslav Kysela 提交于
With some hardware combinations, the PCM interrupts are acknowledged before the period boundary from the emu10k1 chip. The midlevel PCM code gets confused and the playback stream is interrupted. It seems that the interrupt processing shift by 2 samples is enough to fix this issue. This default value does not harm other, non-affected hardware. More information: Kernel bugzilla bug#16300 [A copmile warning fixed by tiwai] Signed-off-by: NJaroslav Kysela <perex@perex.cz> Cc: <stable@kernel.org> Signed-off-by: NTakashi Iwai <tiwai@suse.de>
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- 15 8月, 2010 1 次提交
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由 Sam Ravnborg 提交于
unifdef-y and header-y has same semantic. So there is no need to have both. Drop the unifdef-y variant and sort all lines again Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
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- 12 8月, 2010 1 次提交
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由 Liam Girdwood 提交于
This patch extends the ASoC API to allow sound cards to have more than one CODEC and more than one platform DMA controller. This is achieved by dividing some current ASoC structures that contain both driver data and device data into structures that only either contain device data or driver data. i.e. struct snd_soc_codec ---> struct snd_soc_codec (device data) +-> struct snd_soc_codec_driver (driver data) struct snd_soc_platform ---> struct snd_soc_platform (device data) +-> struct snd_soc_platform_driver (driver data) struct snd_soc_dai ---> struct snd_soc_dai (device data) +-> struct snd_soc_dai_driver (driver data) struct snd_soc_device ---> deleted This now allows ASoC to be more tightly aligned with the Linux driver model and also means that every ASoC codec, platform and (platform) DAI is a kernel device. ASoC component private data is now stored as device private data. The ASoC sound card struct snd_soc_card has also been updated to store lists of it's components rather than a pointer to a codec and platform. The PCM runtime struct soc_pcm_runtime now has pointers to all its components. This patch adds DAPM support for ASoC multi-component and removes struct snd_soc_socdev from DAPM core. All DAPM calls are now made on a card, codec or runtime PCM level basis rather than using snd_soc_socdev. Other notable multi-component changes:- * Stream operations now de-reference less structures. * close_delayed work() now runs on a DAI basis rather than looping all DAIs in a card. * PM suspend()/resume() operations can now handle N CODECs and Platforms per sound card. * Added soc_bind_dai_link() to bind the component devices to the sound card. * Added soc_dai_link_probe() and soc_dai_link_remove() to probe and remove DAI link components. * sysfs entries can now be registered per component per card. * snd_soc_new_pcms() functionailty rolled into dai_link_probe(). * snd_soc_register_codec() now does all the codec list and mutex init. This patch changes the probe() and remove() of the CODEC drivers as follows:- o Make CODEC driver a platform driver o Moved all struct snd_soc_codec list, mutex, etc initialiasation to core. o Removed all static codec pointers (drivers now support > 1 codec dev) o snd_soc_register_pcms() now done by core. o snd_soc_register_dai() folded into snd_soc_register_codec(). CS4270 portions: Acked-by: NTimur Tabi <timur@freescale.com> Some TLV320aic23 and Cirrus platform fixes. Signed-off-by: NRyan Mallon <ryan@bluewatersys.com> TI CODEC and OMAP fixes Signed-off-by: NPeter Ujfalusi <peter.ujfalusi@nokia.com> Signed-off-by: NJanusz Krzysztofik <jkrzyszt@tis.icnet.pl> Signed-off-by: NJarkko Nikula <jhnikula@gmail.com> Samsung platform and misc fixes :- Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com> Signed-off-by: NJoonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com> Reviewed-by: NJassi Brar <jassi.brar@samsung.com> Signed-off-by: NSeungwhan Youn <sw.youn@samsung.com> MPC8610 and PPC fixes. Signed-off-by: NTimur Tabi <timur@freescale.com> i.MX fixes and some core fixes. Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de> J4740 platform fixes:- Signed-off-by: NLars-Peter Clausen <lars@metafoo.de> CC: Tony Lindgren <tony@atomide.com> CC: Nicolas Ferre <nicolas.ferre@atmel.com> CC: Kevin Hilman <khilman@deeprootsystems.com> CC: Sascha Hauer <s.hauer@pengutronix.de> CC: Atsushi Nemoto <anemo@mba.ocn.ne.jp> CC: Kuninori Morimoto <morimoto.kuninori@renesas.com> CC: Daniel Gloeckner <dg@emlix.com> CC: Manuel Lauss <mano@roarinelk.homelinux.net> CC: Mike Frysinger <vapier.adi@gmail.com> CC: Arnaud Patard <apatard@mandriva.com> CC: Wan ZongShun <mcuos.com@gmail.com> Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: NLiam Girdwood <lrg@slimlogic.co.uk>
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- 05 8月, 2010 1 次提交
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由 Mark Brown 提交于
The WM8962 is a low power, high performance stereo CODEC designed for portable digital audio applications. This initial driver release supports the key audio paths of the WM8962. Extended functionality, such as microphone detection, digital microphones and the advanced DSP signal enhancements provided by the device are not yet supported. Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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- 30 7月, 2010 1 次提交
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由 Kuninori Morimoto 提交于
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com> Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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- 29 7月, 2010 2 次提交
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由 Peter Ujfalusi 提交于
Platform parameter to enable automatic FIFO configuration when the codec is in Mode1 or Mode7 FIFO mode. When this mode is selected, the controls for changing nSample (in Mode1), and UTHR (in Mode7) are not added. The driver configures the FIFO configuration based on the stream's period size in a way, that every burst will read period size of data from the host. In Mode7 we need to use a formula, which gives close enough aproximation for the burst length from the host point of view. Signed-off-by: NPeter Ujfalusi <peter.ujfalusi@nokia.com> Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: NLiam Girdwood <lrg@slimlogic.co.uk>
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由 Peter Ujfalusi 提交于
Replace the hardwired latency definition with platform data parameter, and simplify the nSample parameter calculation. Signed-off-by: NPeter Ujfalusi <peter.ujfalusi@nokia.com> Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: NLiam Girdwood <lrg@slimlogic.co.uk>
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- 19 7月, 2010 1 次提交
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由 James Bottomley 提交于
All current users of pm_qos_add_request() have the ability to supply the memory required by the pm_qos routines, so make them do this and eliminate the kmalloc() with pm_qos_add_request(). This has the double benefit of making the call never fail and allowing it to be called from atomic context. Signed-off-by: NJames Bottomley <James.Bottomley@suse.de> Signed-off-by: Nmark gross <markgross@thegnar.org> Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
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- 18 7月, 2010 1 次提交
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由 Kuninori Morimoto 提交于
Specified ID is necessary, when some codecs are used with FSI. Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com> Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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- 13 7月, 2010 2 次提交
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由 Kuninori Morimoto 提交于
This patch add hw_params to snd_soc_dai_ops, because board specific set_rate is needed when FSI was used as master mode. This patch remove fsi_clk_ctrl from fsi_dai_startup, because clock should be disabled before set_rate. Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com> Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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由 Kuninori Morimoto 提交于
There is no necessity that each bit in this area has the meaning. This patch modify it to sequence number Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com> Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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- 28 6月, 2010 1 次提交
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由 David Dillow 提交于
When using poll() to wait for the next period -- or avail_min samples -- one gets a consistent delay for each system call that is usually just a little short of the selected period time. However, When using snd_pcm_read/write(), one gets a jittery delay that alternates between less than a millisecond and approximately two period times. This is caused by snd_pcm_lib_{read,write}1() transferring any available samples to the user's buffer and adjusting the application pointer prior to sleeping to the end of the current period. When the next period interrupt occurs, there is then less than avail_min samples remaining to be transferred in the period, so we end up sleeping until a second period occurs. This is solved by using runtime->twake as the number of samples needed for a wakeup in addition to selecting the proper wait queue to wake in snd_pcm_update_state(). This requires twake to be non-zero when used by snd_pcm_lib_{read,write}1() even if avail_min is zero. Signed-off-by: NDave Dillow <dave@thedillows.org> Signed-off-by: NJaroslav Kysela <perex@perex.cz>
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- 25 6月, 2010 1 次提交
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由 Vladimir Zapolskiy 提交于
This change wipes out a hardcoded macro, which enables codec bias level control. Now is_powered_on_standby value shall be used instead. Signed-off-by: NVladimir Zapolskiy <vzapolskiy@gmail.com> Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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- 31 5月, 2010 2 次提交
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由 apatard@mandriva.com 提交于
Some systems codecs need to configure some registers before and after powering down some of their part. As a convenience add a macro for that. Signed-off-by: NArnaud Patard <apatard@mandriva.com> Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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由 Ben Collins 提交于
This defines the 24bps and 40bps (8khz sample rate) G.723 codec formats. They are going to be used once I submit the driver for an mpeg4/g723 compression card. I've updated the signed value to -1 as per Takashi's comments since these are non-linear formats. Signed-off-by: NBen Collins <bcollins@bluecherry.net> Signed-off-by: NTakashi Iwai <tiwai@suse.de>
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