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2013-02-11Merge remote-tracking branch 'asoc/fix/wm2000' into asoc-nextMark Brown1-3/+28
2013-02-11Merge remote-tracking branch 'asoc/fix/ux500' into asoc-nextMark Brown1-1/+1
2013-02-11Merge remote-tracking branch 'asoc/fix/tlv320aic3x' into asoc-nextMark Brown1-2/+2
2013-02-11Merge remote-tracking branch 'asoc/fix/samsung' into asoc-nextMark Brown1-1/+1
2013-02-11Merge remote-tracking branch 'asoc/fix/dwc' into asoc-nextMark Brown1-0/+4
2013-02-11Merge remote-tracking branch 'asoc/fix/davinci' into asoc-nextMark Brown1-1/+1
2013-02-11Merge remote-tracking branch 'asoc/fix/arizona' into asoc-nextMark Brown1-3/+12
2013-02-11Merge remote-tracking branch 'asoc/fix/adsp' into asoc-nextMark Brown1-3/+11
2013-02-11ASoC: wm_adsp: round to 4-byte boundary for coeff file blocksChris Rattray1-1/+7
Signed-off-by: Chris Rattray <crattray@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-02-10Merge tag 'v3.8-rc6' into next/cleanupOlof Johansson9-24/+25
Linux 3.8-rc6
2013-02-08ASoC: core: Allow digital mute for captureMark Brown4-18/+26
Help avoid noise from the power up of the capture path propagating through into the start of the recording (especially noise caused by the ramp of microphone biases) by keeping the capture muted until after we've finished powering things up with DAPM in the same manner we do for playback. This allows us to take advantage of soft mute support in the hardware more effectively and is more consistent. The core code using the existing digital mute operation is updated to take advantage of this. Some additional cases in the soc-pcm code and suspend will need separate handling but these are less practically relevant than the main runtime stream start/stop case. Rather than refactor the digital mute function in every single driver a new operation is added for drivers taking advantage of this functionality, the old operation should be phased out over time. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by Vinod Koul <vinod.koul@intel.com> Acked-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
2013-02-07ASoC: compress: Only mute playback streamsMark Brown1-6/+11
Otherwise capture activity on a compressed DAI would mute any playback on the same DAI. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Vinod Koul <vinod.koul@intel.com> Acked-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
2013-02-07ALSA: add missing HAS_IOPORT and GENERIC_HARDIRQS dependenciesHeiko Carstens1-1/+1
Fix these two compile errors on s390 which does not have HAS_IOPORT nor GENERIC_HARDIRQS: sound/pci/lx6464es/lx6464es.c: In function ‘snd_lx6464es_free’: sound/pci/lx6464es/lx6464es.c:565:2: error: implicit declaration of function ‘ioport_unmap’ sound/soc/codecs/wm8903.c: In function ‘wm8903_set_pdata_irq_trigger’: sound/soc/codecs/wm8903.c:1954:9: error: implicit declaration of function ‘irq_get_irq_data’ Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-02-07ASoC: Replace max98090 Device DriverJerry Wong4-0/+3953
This patch completes the replacement of the existing max98090 driver, by installing a more complete driver. Signed-off-by: Jerry Wong <jerry.wong@maximintegrated.com> Tested-by: Matthew Mowdy <matthew.mowdy@maximintegrated.com> Reviewed-by: Ralph Birt <ralph.birt@maximintegrated.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-02-07ASoC: Replace max98090 Device DriverJerry Wong3-583/+0
This patch removes the existing max98090 driver prior to installing a more complete one. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-02-07ASoC: arizona: Fix debug logging level for FLLs and AIFsMark Brown1-2/+2
Use _dbg for debug messages. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-02-06Merge branch 'fix/fsl' of ↵Takashi Iwai6-47/+63
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus-uncursed We need this for fixing build error regressions in soc/fsl.
2013-02-06Merge tag 'tegra-for-3.9-soc-ccf' of ↵Olof Johansson1-13/+3
git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/soc From Stephen Warren: ARM: tegra: Common Clock Framework rework Tegra already supports the common clock framework, but had issues: 1) The clock driver was located in arch/arm/mach-tegra/ rather than drivers/clk/. 2) A single "Tegra clock" type was implemented, rather than separate clock types for PLL, mux, divider, ... type in HW. 3) Clock lookups by device drivers were still driven by device name and connection ID, rather than through device tree. This pull request solves all three issues. This required some DT changes to add clocks properties, and driver changes to request clocks more "correctly". Finally, this rework allows all AUXDATA to be removed from Tegra board files, and various duplicate clock lookup entries to be removed from the driver. This pull request is based on the previous pull request, with tag tegra-for-3.9-cleanup. * tag 'tegra-for-3.9-soc-ccf' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra: (31 commits) clk: tegra30: remove unused TEGRA_CLK_DUPLICATE()s clk: tegra20: remove unused TEGRA_CLK_DUPLICATE()s ARM: tegra30: remove auxdata ARM: tegra20: remove auxdata ASoC: tegra: remove auxdata staging: nvec: remove use of clk_get_sys ARM: tegra: paz00: add clock information to DT ARM: tegra: add clock properties to Tegra30 DT ARM: tegra: add clock properties to Tegra20 DT spi: tegra: do not use clock name to get clock ARM: tegra: remove legacy clock code ARM: tegra: migrate to new clock code clk: tegra: add clock support for Tegra30 clk: tegra: add clock support for Tegra20 clk: tegra: add Tegra specific clocks ARM: tegra: define Tegra30 CAR binding ARM: tegra: define Tegra20 CAR binding ARM: tegra: move tegra_cpu_car.h to linux/clk/tegra.h ARM: tegra: add function to read chipid ARM: tegra: fix compile error when disable CPU_IDLE ... Signed-off-by: Olof Johansson <olof@lixom.net> Conflicts: arch/arm/mach-tegra/board-dt-tegra20.c arch/arm/mach-tegra/board-dt-tegra30.c arch/arm/mach-tegra/common.c arch/arm/mach-tegra/platsmp.c drivers/clocksource/Makefile
2013-02-05ASoC: wm2200: Provide platform data for MICBIAS configurationChris Rattray1-0/+31
Signed-off-by: Chris Rattray <crattray@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-02-05ASoC: soc-compress: Add support for not memory mapped DSPsCharles Keepax1-3/+35
The ASoC compressed API did not implement the copy callback in its compressed ops which is required for DSPs that are not memory mapped. This patch creates a local copy of the compress ops for each runtime and modifies them with a copy callback as appropriate. Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-02-05ASoC: omap-pcm: No need to set constraint at open timePeter Ujfalusi1-11/+3
The same constraint is going to be set in the snd_dmaengine_pcm_open() function, so there is no need to set it here as well. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Reviewed-by: Jarkko Nikula <jarkko.nikula@bitmer.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-02-05Merge branch 'next/cleanup-header' of ↵Olof Johansson2-11/+10
git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/cleanup From Kukjin Kim: AS I commented, this makes <mach/*.h> local so that they could be removed. * 'next/cleanup-header' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: (26 commits) ARM: S3C64XX: Fix missing header error with CONFIG_CPU_IDLE enabled ARM: S3C64XX: make regs-syscon-power.h local ARM: S3C64XX: make regs-sys.h local ARM: S3C64XX: make regs-srom.h local ARM: S3C64XX: make regs-modem.h local ARM: S3C64XX: make regs-gpio-memport.h local ARM: S3C64XX: make crag6410.h local ARM: S3C24XX: remove dsc.c and make regs-dsc.h local ARM: S3C24XX: remove idle.h ARM: S3C2412: cleanup regs-s3c2412.h ARM: S3C2416: remove regs-s3c2416-mem.h and regs-s3c2416.h ARM: S3C24XX: make vr1000-cpld.h, vr1000-irq.h and vr1000-map.h local ARM: S3C24XX: make otom-map.h local ARM: S3C24XX: make osiris-cpld.h and osiris-map.h local ARM: S3C24XX: make h1940.h and h1940-latch.h local ARM: S3C24XX: make gta02.h local ARM: S3C24XX: make bast-cpld.h, bast-irq.h and bast-map.h local ARM: S3C24XX: make anubis-cpld, anubis-irq and anubis-map local ARM: SAMSUNG: cleanup mach/gpio-fns.h gpio-track.h and gpio-nrs.h ARM: SAMSUNG: cleanup mach/regs-audss.h file ... Signed-off-by: Olof Johansson <olof@lixom.net>
2013-02-04ASoC: wm_adsp: Use asynchronous I/O to write firmware and coefficientsMark Brown1-16/+66
Allow the regmap API to use asynchronous I/O where supported to minimise the delay between transfers, reducing firmware download times. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-02-04ASoC: wm2200: correct IN2L and IN3L digital muteChris Rattray1-2/+2
Signed-off-by: Chris Rattray <crattray@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: stable@vger.kernel.org
2013-02-04ASoC: tlv320aic3x: Convert mic bias to a supply widgetHebbar Gururaja5-15/+90
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>
2013-02-04ASoC: sam9g20_wm8731: disable clock and correct sequence when unloadBo Shen1-3/+3
disable clock and correct sequence when unload Signed-off-by: Bo Shen <voice.shen@atmel.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-02-04ASoC: atmel_ssc_dai: correct sequence when unloadBo Shen1-1/+1
correct the sequence when unload this module Signed-off-by: Bo Shen <voice.shen@atmel.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-02-04ASoC: atmel_ssc_dai: remove error set private dataBo Shen1-10/+0
ssc private data has been set in ssc driver, this cause the error private data set to ssc, remove it Signed-off-by: Bo Shen <voice.shen@atmel.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-02-04ASoC: atmel_pcm: make it buildable as moduleBo Shen1-2/+4
When build as module, it reports following error, using this patch fix it sound/soc/atmel/atmel-pcm-pdc.c:387: error: redefinition of 'atmel_pcm_pdc_platform_register' sound/soc/atmel/atmel-pcm.h:95: note: previous definition of 'atmel_pcm_pdc_platform_register' was here sound/soc/atmel/atmel-pcm-pdc.c:393: error: redefinition of 'atmel_pcm_pdc_platform_unregister' sound/soc/atmel/atmel-pcm.h:99: note: previous definition of 'atmel_pcm_pdc_platform_unregister' was here Signed-off-by: Bo Shen <voice.shen@atmel.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-02-04ASoC: arizona: Fixed a bug in FLL fractional calculationRyo Tsutsui1-1/+10
Previously arizona_calc_fll() was checking if the target frequency is exactly divisible by reference frequency, but should have been product of the ratio and the reference frequency. Also scale down the Lamba and Theta coefficients be under 16-bits in order to match the registers. Signed-off-by: Ryo Tsutsui <ryo.tsutsui@wolfsonmicro.com> Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: stable@vger.kernel.org
2013-02-04ASoC: wm2200: Add Rx ANC input select controlChris Rattray1-0/+11
Signed-off-by: Chris Rattray <crattray@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-01-31ASoC: Ux500: Fix build error pertaining to missing include fileLee Jones1-1/+1
Some compilers complain when building sound for MOP500: sound/soc/ux500/mop500.c:27:27: fatal error: mop500_ab8500.h: No such file or directory That file is actually in the local directory rather than include. Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-01-31ASoC: Samsung: I2S: Add support for runtime S2RR. Chandrasekar1-0/+26
This patch adds runtime suspend to resume support for I2S. I2S clk is disabled at suspend and enabled at resume. Signed-off-by: R. Chandrasekar <rcsekar@samsung.com> Signed-off-by: Padmavathi Venna <padma.v@samsung.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-01-31ASoC: samsung: Fix compilation error on S3C2440Alexey Galakhov1-1/+1
The commit a08485d8 ("ASoC: Samsung: Do not register samsung audio dma device as pdev") introduced compilation error. Combination of CONFIG_CPU_S3C2440 and CONFIG_SND_S3C24XX_I2S caused undefined symbols 's3c_i2sv2_register_dai' and 's3c2412_i2s_dai' in sound/soc/samsung/s3c24xx-i2s.c. This patch fixes the problem and makes S3C2440 I2S usable again. It does not affect S3C2412 (aka I2S-v2). Signed-off-by: Alexey Galakhov <agalakhov@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-01-31ASoC: wm2000: Expose ANC gain adjustmentMark Brown1-0/+3
No TLV information since it's not actually a direct gain control. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-01-31ASoC: wm2000: Lock state machine updatesMark Brown1-3/+28
Need to ensure we don't get confused by simultaneous updates. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-01-30ASoC: wm_adsp: Fix support for firmware switching on DSP2 and higherMark Brown1-1/+1
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-01-30ASoC: clock gating is decided by bool on snd_soc_of_parse_daifmt()Kuninori Morimoto1-14/+6
ASoC clock gate settings are continuous/gated only. This patch decides it as bool, then, gated clock will be default. Special thanks to Stephen Cc: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-01-30ASoC: tlv320aic3x: Remove mono supportBenoît Thébaudeau1-2/+2
Playing a mono stream on the TLV320AIC3x results in too fast playback rate. Remove mono support so that mono streams can be played correctly on this codec. Tested with imx-ssi (i.MX25) and TLV320AIC3104. Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-01-29Merge branch 'master' into for-nextJiri Kosina289-3285/+7638
Conflicts: drivers/devfreq/exynos4_bus.c Sync with Linus' tree to be able to apply patches that are against newer code (mvneta).
2013-01-29ASoC: Samsung: Update Kconfig for I2S,SPDIF and PCM audioPadmavathi Venna1-3/+3
Update Kconfig file to enable I2S,PCM audio for wm8994 and spdif on all samsung platforms. Signed-off-by: Sangsu Park <sangsu4u.park@samsung.com> Signed-off-by: Sangbeom Kim <sbkim73@samsung.com> Signed-off-by: Padmavathi Venna <padma.v@samsung.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-01-29ASoC: SMDK: WM8994: Add device tree support for machine filePadmavathi Venna1-0/+26
Add the basic device tree based lookup. Signed-off-by: Padmavathi Venna <padma.v@samsung.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-01-29ASoC: samsung: Add DT support for i2sPadmavathi Venna3-46/+167
Add support for device based discovery. Signed-off-by: Padmavathi Venna <padma.v@samsung.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-01-28ASoC: tegra: remove auxdataPrashant Gaikwad1-12/+2
Configlink clock information is added to device tree. Get the clocks using device node. Remove AUXDATA. Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-01-28ARM: tegra: migrate to new clock codePrashant Gaikwad1-1/+1
Migrate Tegra clock support to drivers/clk/tegra, this involves moving: 1. definition of tegra_cpu_car_ops to clk.c 2. definition of reset functions to clk-peripheral.c 3. change parent of cpu clock. 4. Remove legacy clock initialization. 5. Initialize clocks using DT. 6. Remove all instance of mach/clk.h Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com> [swarren: use to_clk_periph_gate().] Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-01-28Merge remote-tracking branch 'asoc/fix/adsp' into asoc-adspMark Brown1-4/+12
Conflicts: sound/soc/codecs/wm_adsp.c
2013-01-28ASoC: wm_adsp: Ensure ADSP2 DMAs are quiesced when DSP is haltedMark Brown1-3/+11
Maximise robustness for the widest range of firmwares by ensuring the DSP is in a consistent state when halted. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-01-28ASoC: fsl: fix snd-soc-imx-pcm module buildShawn Guo4-41/+52
When building modules with CONFIG_SND_IMX_SOC=m in imx_v6_v7_defconfig, we will see the following link error. LD [M] sound/soc/fsl/snd-soc-fsl-ssi.o LD [M] sound/soc/fsl/snd-soc-fsl-utils.o LD [M] sound/soc/fsl/snd-soc-imx-ssi.o LD [M] sound/soc/fsl/snd-soc-imx-audmux.o LD [M] sound/soc/fsl/snd-soc-imx-pcm.o sound/soc/fsl/imx-pcm-dma.o: In function `init_module': imx-pcm-dma.c:(.init.text+0x0): multiple definition of `init_module' sound/soc/fsl/imx-pcm-fiq.o:imx-pcm-fiq.c:(.init.text+0x0): first defined here sound/soc/fsl/imx-pcm-dma.o: In function `cleanup_module': imx-pcm-dma.c:(.exit.text+0x0): multiple definition of `cleanup_module' sound/soc/fsl/imx-pcm-fiq.o:imx-pcm-fiq.c:(.exit.text+0x0): first defined here make[4]: *** [sound/soc/fsl/snd-soc-imx-pcm.o] Error 1 The module snd-soc-imx-pcm is designed to link imx-pcm.o with imx-pcm-dma.o or imx-pcm-fiq.o depending on if option SND_SOC_IMX_PCM_DMA or SND_SOC_IMX_PCM_FIQ is enabled. Both imx-pcm-dma and imx-pcm-fiq register their own module_platform_driver. However, these two options are not mutually exclusive and can be enabled together. And that's why we see above multiple init_module definition error. Instead of having both imx-pcm-dma and imx-pcm-fiq register their own platform_driver, we should do only once in imx-pcm.c. Using platform_device_id to distinguish between imx-pcm-dma and imx-pcm-fiq, we can run-time call imx-pcm-dma/fiq specific initialization in .probe hook to have module snd-soc-imx-pcm work for both cases. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-01-28Revert "ASoC: fsl: fix multiple definition of init_module"Shawn Guo3-6/+11
This reverts commit 25b8d31488a3fb3611651991969526b2ea475764. While the commit fixes multiple init_module definition error with module build, it breaks build when both imx-pcm-fiq and imx-pcm-dma are built in as below. LD sound/soc/fsl/snd-soc-fsl-ssi.o LD sound/soc/fsl/snd-soc-fsl-utils.o LD sound/soc/fsl/snd-soc-imx-ssi.o LD sound/soc/fsl/snd-soc-imx-audmux.o LD sound/soc/fsl/snd-soc-imx-pcm-fiq.o LD sound/soc/fsl/snd-soc-imx-pcm-dma.o LD sound/soc/fsl/snd-soc-eukrea-tlv320.o LD sound/soc/fsl/snd-soc-imx-sgtl5000.o LD sound/soc/fsl/snd-soc-imx-mc13783.o LD sound/soc/fsl/built-in.o sound/soc/fsl/snd-soc-imx-pcm-dma.o: In function `imx_pcm_free': imx-pcm.c:(.text+0x464): multiple definition of `imx_pcm_free' sound/soc/fsl/snd-soc-imx-pcm-fiq.o:imx-pcm-fiq.c:(.text+0x1a8): first defined here sound/soc/fsl/snd-soc-imx-pcm-dma.o: In function `snd_imx_pcm_mmap': imx-pcm.c:(.text+0x35c): multiple definition of `snd_imx_pcm_mmap' sound/soc/fsl/snd-soc-imx-pcm-fiq.o:imx-pcm-fiq.c:(.text+0xa0): first defined here sound/soc/fsl/snd-soc-imx-pcm-dma.o: In function `imx_pcm_new': imx-pcm.c:(.text+0x3dc): multiple definition of `imx_pcm_new' sound/soc/fsl/snd-soc-imx-pcm-fiq.o:imx-pcm-fiq.c:(.text+0x120): first defined here make[4]: *** [sound/soc/fsl/built-in.o] Error 1 Let's revert the commit and find a proper fix for multiple init_module definition error later. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> 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>
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