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2013-07-03Merge tag 'sound-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/soundLinus Torvalds4-195/+2
Pull sound updates from Takashi Iwai: "A relative calm release at this time with a flat diffstat. The only significant change in the ALSA core side is the support for more than 32 card instances, configurable via kconfig. Other than that, in both ASoC and other parts, mostly some improvements and fixes on the driver side. - hda: More quirks for ALC269-variants on Dell & co, VIA codec fixes - hda: Haswell HDMI audio fixes, runtime PM improvements - hda: Intel BayTrail support, ALC5505 DSP support - es1968: MediaForte M56VAP support - usb-audio: Improved support for Yamaha/Roland devices - usb-audio: M2Tech hiFace, Audio Advantage Micro II support - hdspm: wordclock fixes - ASoC: Pending fixes for WM8962 - ASoC: Cleanups and fixes for Blackfin, SGTL5000 and UX500 - ASoC: Generalisation of the Bluetooth and HDMI stub drivers - ASoC: SSM2518 and RT5640 codec drivers. - ASoC: Tegra CPUs with RT5640 machine driver - ASoC: AC'97 refactoring bug fixes - ASoC: ADAU1701 driver fixes - Clean up of *_set_drvdata() in a wide range of drivers" * tag 'sound-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (284 commits) ALSA: vmaster: Fix the regression of missing vmaster hook call ALSA: hda - Add Dell SSID to support Headset Mic recording ASoC: adau1701: remove control_data assignment ASoC: adau1701: more direct regmap usage ASoC: ac97: fixup multi-platform AC'97 module build failure ASoC: pxa2xx: fixup multi-platform AC'97 build failures ASoC: tegra20-ac97: Remove unused variable ASoC: tegra20-ac97: Remove duplicate error message ALSA: usb-audio: Add Audio Advantage Micro II ASoC: tas5086: fix Mid-Z implementation ASoC: tas5086: fix TAS5086_CLOCK_CONTROL register size ALSA: Replace the magic number 44 with const ALSA: hda - Fix the max length of control name in generic parser ALSA: hda - Guess what, it's two more Dell headset mic quirks ALSA: hda - Yet another Dell headset mic quirk ALSA: hda - Add support for ALC5505 DSP power-save mode ASoC: mfld: Remove unused variable ALSA: usb-audio: add quirks for Roland QUAD/OCTO-CAPTURE ALSA: usb-audio: claim autodetected PCM interfaces all at once ALSA: usb-audio: remove superfluous Roland quirks ...
2013-06-18ARM: davinci: move private EDMA API to arm/commonMatt Porter3-1/+3
Move mach-davinci/dma.c to common/edma.c so it can be used by OMAP (specifically AM33xx) as well. Signed-off-by: Matt Porter <mporter@ti.com> Acked-by: Chris Ball <cjb@laptop.org> # davinci_mmc.c Acked-by: Mark Brown <broonie@linaro.org> Acked-by: Olof Johansson <olof@lixom.net> [nsekhar@ti.com: dropped davinci sffsdr changes] Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2013-06-17Merge remote-tracking branch 'asoc/topic/davinci' into asoc-nextMark Brown4-195/+2
2013-06-17ASoC: davinci: remove sffsdr machine supportSekhar Nori3-193/+0
sffsdr machine support does not build since at least v2.6.36 (~3 years). There is little hope of it being fixed, so remove the support. Signed-off-by: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-06-03ASoC: davinci: Remove redundant use of of_match_ptr macroSachin Kamat1-2/+2
'mcasp_dt_ids' is always compiled in. Hence of_match_ptr is not necessary. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-05-21ASoC: davinci: fix sample rotationDaniel Mack1-3/+4
McASP serial audio engine needs different rotation values on TX and RX channels. Commit dde109fb462 ("ASoC: McASP: Fix data rotation for playback. Enables 24bit audio playback") changed the calculation to fix the playback format, but broke the capture stream by doing it for both TXFMT and RXFMT. Signed-off-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: stable@vger.kernel.org [3.9 only]
2013-05-15ASoC: davinci-sffsdr: Staticize non exported structLars-Peter Clausen1-1/+1
The pcm3008_codec struct is not used outside of davinci-sffsdr.c, so make it static. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-05-03Merge tag 'asoc-v3.10-4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-nextTakashi Iwai1-2/+5
ASoC: Updates for v3.10 A few more bug fixes, the DAPM clock fix is actually a driver specific one since currently there's only one user of the clock support due to the problems relying on the clock API.
2013-05-03ASoC: McASP: Fix receive clock polarity in DAIFMT_NB_NF mode.Marek Belisko1-1/+1
According documentation bit ACLKRPOL is set to 0 (receiver samples data on falling edge) and when set to 1 (receiver samples data on rising edge). I2S data are always sampled on falling edge and valid during rising edge of bit clock. So in case of capture data transmitter sample data on falling edge and macsp must read then on rising edge. Signed-off-by: Marek Belisko <marek.belisko@streamunlimited.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-30ASoC: McASP: Add pins output direction for rx clocks when configured in CBS_CFS formatMarek Belisko1-1/+4
When McASP is bit clock and frame clock master enable pin output for rx clocks. Signed-off-by: Marek Belisko <marek.belisko@streamunlimited.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-23ASoC: davinci-mcasp: Add Support BCLK-to-LRCLK ratio for TDM modesMichal Bachraty2-4/+5
For TDM mode, BCLK-to-LCLK ratio is computed as (tdm_slots) x (word_length). I2S mode is only subset of TDM mode with specific tdm_slots = 2 channels. Also bclk_lrclk_ratio can be greater than 255, therefore u16 need to be used. Signed-off-by: Michal Bachraty <michal.bachraty@streamunlimited.com> Acked-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-23ASoC: davinci-pcm, davinci-mcasp: Clean up active_serializersMichal Bachraty3-10/+10
As pointed of by Vaibhav, commit message: "ASoC: davinci-mcasp: Add support for multichannel playback" number of active serializers can be hidden into fifo_level variable, which is set in davimci-mcasp. Signed-off-by: Michal Bachraty <michal.bachraty@streamunlimited.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-12Merge remote-tracking branch 'asoc/topic/davinci' into asoc-nextMark Brown3-30/+69
2013-04-05ASoC: davinci-mcasp: don't overwrite DIT settingsYegor Yefremov1-12/+13
Channel size settings will be made at the end of davinci_mcasp_hw_params() routine and thus overwrite frame format settings made for DIT mode. This patch fixes this issue by taking op_mode into account. Tested with official PSP 3.2 kernel and sii9022a HDMI transmitter. Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com> Tested-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-05ASoC: davinci-mcasp: don't configure AFSX direction in DIT modeYegor Yefremov1-3/+0
AFSX won't be used in DIT mode. The related pins are AHCLKX and the data pins. Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com> Acked-by: Vaibhav Bedia <vaibhav.bedia@ti.com> Tested-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-03-26ASoC: switch over to use snd_soc_register_component() on davinci mcaspKuninori Morimoto1-5/+10
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-03-26ASoC: switch over to use snd_soc_register_component() on davinci vcifKuninori Morimoto1-3/+8
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-03-26ASoC: switch over to use snd_soc_register_component() on davinci i2sKuninori Morimoto1-5/+10
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-03-12ASoC: davinci-mcasp: clean up davinci_hw_common_param()Daniel Mack1-23/+11
As pointed of by Vaibhav, commit 2952b27e2 ("ASoC: davinci-mcasp: Add support for multichannel playback") duplicated the logic of counting the active serializers. That can be avoided by shifting the code around a bit. Also, drop two unused defines introduced by the same commit. Signed-off-by: Daniel Mack <zonque@gmail.com> Acked-by: Vaibhav Bedia <vaibhav.bedia@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-03-04ASoC: davinci-mcasp: Add support for multichannel playbackMichal Bachraty3-15/+68
Davinci McASP has support for I2S multichannel playback. For I2S playback/receive, each serializer is capable to play 2 channels (L/R) audio data.Serializer function (Playback-receive-none) is configured in DT, depending on hardware specification. It is possible to play less channels than configured in DT. For that purpose,only specific number of active serializers are enabled. McASP FIFO need to have DMA transfer Bcnt set to number of enabled serializers, otherwise no data are transfered to McASP and Alsa generates "DMA/IRQ playback write error (DMA or IRQ trouble?)" error. For TDM mode, McASP is capable to play or receive 32 channels for one serializer. McAsp has support for max 16 serializer, therefore max channels is 32 * 8. Signed-off-by: Michal Bachraty <michal.bachraty@streamunlimited.com> Tested-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-02-11Merge remote-tracking branch 'asoc/topic/tlv320aic3x' into asoc-nextMark Brown1-3/+3
2013-02-04ASoC: tlv320aic3x: Convert mic bias to a supply widgetHebbar Gururaja1-3/+3
Convert MicBias widgets to supply widget. On tlv320aic3x, Mic bias power on/off shares the same register bits with output mic bias voltage. So, when power on mic bias, we need reclaim it to voltage value. Provide a new platform data so that the micbias voltage can be sent according to board requirement. Now since tlv320aic3x codec driver is DT aware, update dt files and functions to handle this new "micbias-vg" platform data. Because of sharing of bits, when enabling the micbias, voltage also needs to be updated. So use SND_SOC_DAPM_POST_PMU & SND_SOC_DAPM_PRE_PMD macro to create an event to handle this. Since micbias is converted to supply widget, updated machine drivers as well. This change is runtime tested on da850-evm with audio loopback (arecord|aplay) for confirmation. Signed-off-by: Hebbar Gururaja <gururaja.hebbar@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-01-27ASoC: McASP: Fix data rotation for playback. Enables 24bit audio playbackMichal Bachraty1-1/+1
u32 rotate = (32 - word_length) / 4; This implementation is wrong, but it works only for 16, or 32 bit audio data. (rotation for 16 or 32 bit is same as in code I present) Mcasp rotated data in 4 bits (max value 0x7)and then masks them . That data are sended to i2s bus. For 24 bit or 20 bit or other data formats, this code rotates data badly and you hear somethink like noise. You need to use u32 rotate = (word_length / 4) & 0x7; to proper data rotation. Signed-off-by: Michal Bachraty <michal.bachraty@streamunlimited.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-12-07ASoC: McASP: implement a way to force BCLK/LRCLK ratiosDaniel Mack2-0/+16
Depending on the Codec, the the BCLK/LRCLK ratio might not be freely chosen by the CPU DAI. For example, some Codec might want to be supplied with 32-bit samples for both its channels regardless of the actual audio word size the CPU sends. In such cases, the rest of the bits on the data lines must be padded with zeros: _______________________________ LRCLK / \ --' `---------- ..... BCLK ||||||||||||||||||||||||||||||||||||||||||||||| ..... DATA ____||||||||||||||||_________________|||||||||| ..... |<-- data -->|<-- pads --> | This patch adds a new clock divider to configure the BCLK/LRCLK ratio. If the machine code uses that divider, the driver uses the specified value, instead of deriving that information from the audio word size. Otherwise, the original behaviour is retained. Signed-off-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-12-07ASoC: McASP: calculate values for channel sizeDaniel Mack2-63/+10
Change davinci_config_channel_size() to derive the values for XSSZ and XROT in DAVINCI_MCASP_[RT]XFMT_REG from the configured word length rather than hard-coding them in a switch/case block. Also, by directly passing the word length to davinci_config_channel_size(), we can get rid of the DAVINCI_AUDIO_WORD_* enum. Signed-off-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-12-07ASoC: McASP: remove unused variablesDaniel Mack2-3/+0
codec_fmt and sample_rate variables are unused in both snd_platform_data and davinci_audio_dev, so drop them. Signed-off-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-10-22ASoC: davinci: replace private sram api with genallocMatt Porter3-6/+35
Removes the DaVinci private SRAM API and replaces it with the genalloc API. The SRAM gen_pool is passed in pdata since DaVinci is in the early stages of DT conversion. [zonque@gmail.com: stub out gen_pool functions for !CONFIG_GENERIC_ALLOCATOR] Signed-off-by: Matt Porter <mporter@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-10-15ASoC: McASP: treat SNDRV_PCM_FORMAT_U24_* as 32 bit wordsDaniel Mack1-2/+2
Signed-off-by: Daniel Mack <zonque@gmail.com> Reported-by: Mike Looijmans <mike.looijmans@topic.nl> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-10-15ASoC: McASP: add support for 24 bit samplesDaniel Mack1-0/+12
Signed-off-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-10-15ASoC: McASP: set format parameters in dependence of the DAI formatDaniel Mack1-4/+17
The FSDUR flag configures whether the frame clock uses a high phase of only one bit or a full word. This has to be set depending on the DAI format. For other modes than DSP_B, the FSXDLY/FSRDLY fields have to be set to 1. Signed-off-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-10-15ASoC: McASP: make AHCLK direction configurableDaniel Mack2-6/+25
Add a .set_sysclk function to pass the direction of the clock down to the driver. Only enable AHCLKX in the PDIR register when the CPU is driving the clock. This also removes the modification of the AHCLKXE/AHCLKRE bits in the hw_params callback, and users must set the desired configuration using snd_soc_dai_set_sysclk(), which this patch also does for the only user in mainline (davinci-evm). Signed-off-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-10-15ASoC: McASP: add support for clock dividersDaniel Mack1-1/+31
Add support for the internal clock dividers of the McASP driver. Signed-off-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-10-15ASoC: enable 192KHz support for McASPDaniel Mack2-13/+5
Signed-off-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-09-06ASoC: Davinci: McASP: add support new McASP IP VariantHebbar, Gururaja1-13/+73
The OMAP2+ variant of McASP is different from Davinci variant w.r.to some register offset. Changes - Add new MCASP_VERSION_3 to identify new variant. New DT compatible "ti,omap2-mcasp-audio" to identify version 3 controller. - The register offsets are handled depending on the version. Note: DMA parameters (dma fifo offset) are not updated and will be done later. Signed-off-by: Hebbar, Gururaja <gururaja.hebbar@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-09-05Merge branch 'asoc-omap' into for-3.7Mark Brown1-2/+8
2012-08-31ASoC: Davinci: evm: Fix typo in cpu dai nameHebbar, Gururaja1-1/+1
Fix typo caused by recent commit (cf53756 - ASoC: davinci: davinci-pcm does not need to be a plaform_driver) Signed-off-by: Hebbar, Gururaja <gururaja.hebbar@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-08-27ASoC: Davinci: McASP: add device tree support for McASPHebbar, Gururaja1-1/+123
Add device tree probe for McASP driver. Note: DMA parameters are not populated from DT and will be done later. Signed-off-by: Hebbar, Gururaja <gururaja.hebbar@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-08-27ASoC/ARM: Davinci: McASP: split asp header into platform and audio specificHebbar, Gururaja5-9/+4
Davinci McASP header & driver are shared by few OMAP platforms (like TI81xx, AM335x). Splitting asp header into Davinci platform specific header and Audio specific header helps to share them across platforms. Audio specific defines is moved to to common <linux/platform_data/davinci_asp.h> so that the header can be accessed by all related platforms. While here, correct the header usage (remove multiple header re-definitions and unused headers) and remove platform names from structures comments and enum. Also some some coding style errors. Signed-off-by: Hebbar, Gururaja <gururaja.hebbar@ti.com> Acked-by: Vaibhav Bedia <vaibhav.bedia@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-08-27ASoC: davinci: davinci-pcm does not need to be a plaform_driverHebbar, Gururaja7-25/+46
Same as the commit 518de86 (ASoC: tegra: register 'platform' from DAIs, get rid of pdev). It makes davinci-pcm not a platform_driver but helper to register "platform", so that the platform_device for davinci-pcm can be saved completely. Signed-off-by: Hebbar, Gururaja <gururaja.hebbar@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-08-09ASoC: McASP: Convert driver to use Runtime PM APIHebbar, Gururaja2-23/+20
* Add Runtime PM support to McASP host controller. * Use Runtime PM API to enable/disable McASP clock. This was tested on AM18x Board using suspend/resume Signed-off-by: Hebbar, Gururaja <gururaja.hebbar@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-08-09ASoC: Davinci: McASP: remove unused header includeHebbar, Gururaja1-1/+0
Defines or parameters from <mach/mux.h> isn't used anywhere. Hence remove the header include. Signed-off-by: Hebbar, Gururaja <gururaja.hebbar@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-08-09ASoC: Davinci: McASP: Flush the FIFO before enablingVaibhav Bedia1-2/+8
FIFO should be flushed before it is enabled for the first time. This fixes the I/O errors reported by the ASoC core on a fresh boot Signed-off-by: Vaibhav Bedia <vaibhav.bedia@ti.com> Signed-off-by: Hebbar, Gururaja <gururaja.hebbar@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-01-20ASoC: replace 0xffffffff with DMA_BIT_MASK macroJoachim Eastwood1-2/+2
Signed-off-by: Joachim Eastwood <joachim.eastwood@jotron.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-01-07ASoC: check for substream not channels_min in pcm enginesJoachim Eastwood1-3/+2
This is a follow up on 53dea36c70c1857 which fixes the other affected pcm engines. Description from 53dea36c70c1857: Don't rely on the codec's channels_min information to decide wheter or not allocate a substream's DMA buffer. Rather check if the substream itself was allocated previously. Without this patch I was seeing null-pointer dereferenc in atmel-pcm. Signed-off-by: Joachim Eastwood <joachim.eastwood@jotron.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-01-02ASoC: davinci-i2s.c: use devm_ functionsJulia Lawall1-26/+13
The various devm_ functions allocate memory that is released when a driver detaches. This patch uses devm_kzalloc, devm_request_mem_region and devm_ioremap for data that is allocated in the probe function of a platform device and is only freed in the remove function. In this case, the original code did not contain a call to iounmap, nor does one appear anywhere else in the file. I have assumed that it is safe to use devm_ioremap for the allocation in any case. Signed-off-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-01-02ASoC: davinci-mcasp.c: use devm_ functionsJulia Lawall1-28/+12
The various devm_ functions allocate memory that is released when a driver detaches. This patch uses devm_kzalloc, devm_request_mem_region and devm_ioremap for data that is allocated in the probe function of a platform device and is only freed in the remove function. In this case, the original code did not contain a call to iounmap, nor does one appear anywhere else in the file. I have assumed that it is safe to use devm_ioremap for the allocation in any case. Signed-off-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-01-02ASoC: davinci-vcif.c: use devm_ functionsJulia Lawall1-10/+4
The various devm_ functions allocate memory that is released when a driver detaches. This patch uses devm_kzalloc, devm_request_mem_region and devm_ioremap for data that is allocated in the probe function of a platform device and is only freed in the remove function. Signed-off-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-12-22ASoC: davinci: Add .owner to struct snd_soc_cardAxel Lin2-0/+7
Missed .owner of struct snd_soc_card will prevent the module from being removed from underneath its users. Reported-by: Lothar Waßmann <LW@KARO-electronics.de> Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-11-25ASoC: Convert davinci directory to module_platform_driverAxel Lin4-44/+4
Factor out some boilerplate code. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-11-23ASoC: Constify snd_soc_dai_ops structsLars-Peter Clausen3-3/+3
Commit 1ee46ebd("ASoC: Make the DAI ops constant in the DAI structure") introduced the possibility to have constant DAI ops structures, yet this is barley used in both existing drivers and also new drivers being submitted, although none of them modifies its DAI ops structure. The later is not surprising since existing drivers are often used as templates for new drivers. So this patch just constifies all existing snd_soc_dai_ops structs to eliminate the issue altogether. The patch was generated with the following coccinelle semantic patch: // <smpl> @@ identifier ops; @@ -struct snd_soc_dai_ops ops = +const struct snd_soc_dai_ops ops = { ... }; // </smpl> Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>