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2020-01-14ASoC: fsl_asrc: Add support for imx8qm & imx8qxpShengjiu Wang
There are two asrc module in imx8qm & imx8qxp, each module has different clock configuration, and the DMA type is EDMA. So in this patch, we define the new clocks, refine the clock map, and include struct fsl_asrc_soc_data for different soc usage. The EDMA channel is fixed with each dma request, one dma request corresponding to one dma channel. So we need to request dma channel with dma request of asrc module. Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com> Acked-by: Nicolin Chen <nicoleotsuka@gmail.com> Link: https://lore.kernel.org/r/f33dfe3157b5ab200e09ccbf9ab73d31fac6664b.1575452454.git.shengjiu.wang@nxp.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-10-28ASoC: fsl_asrc: refine the setting of internal clock dividerShengjiu Wang
The output divider should align with the output sample rate, if use ideal sample rate, there will be a lot of overload, which would cause underrun. The maximum divider of asrc clock is 1024, but there is no judgement for this limitation in driver, which may cause the divider setting not correct. For non-ideal ratio mode, the clock rate should divide the sample rate with no remainder, and the quotient should be less than 1024. Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com> Acked-by: Nicolin Chen <nicoleotsuka@gmail.com> Link: https://lore.kernel.org/r/23c634e4bf58afce5b3ae67f5f42e8d1cae2639a.1572252307.git.shengjiu.wang@nxp.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-10-01ASoC: fsl_asrc: Fix error with S24_3LE format bitstream in i.MX8Shengjiu Wang
There is error "aplay: pcm_write:2023: write error: Input/output error" on i.MX8QM/i.MX8QXP platform for S24_3LE format. In i.MX8QM/i.MX8QXP, the DMA is EDMA, which don't support 24bit sample, but we didn't add any constraint, that cause issues. So we need to query the caps of dma, then update the hw parameters according to the caps. Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com> Acked-by: Nicolin Chen <nicoleotsuka@gmail.com> Link: https://lore.kernel.org/r/b6a4de2bbf960ef291ee902afe4388bd0fc1d347.1569493933.git.shengjiu.wang@nxp.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-10-01ASoC: fsl_asrc: update supported sample formatShengjiu Wang
The ASRC support 24bit/16bit/8bit input width, which is data width, not slot width. For the S20_3LE format, the data with is 20bit, slot width is 24bit, if we set ASRMCR1n.IWD to be 24bits, the result is the volume is lower than expected, it likes 24bit data right shift 4 bits So replace S20_3LE with S24_3LE in supported list and add S8 format in TX supported list Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com> Acked-by: Nicolin Chen <nicoleotsuka@gmail.com> Link: https://lore.kernel.org/r/45a7c383f43cc1dd9d0934846447aee653278c03.1569493933.git.shengjiu.wang@nxp.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-10-01ASoC: fsl_asrc: Use in(out)put_format instead of in(out)put_word_widthShengjiu Wang
snd_pcm_format_t is more formal than enum asrc_word_width, which has two property, width and physical width, which is more accurate than enum asrc_word_width. So it is better to use in(out)put_format instead of in(out)put_word_width. Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com> Acked-by: Nicolin Chen <nicoleotsuka@gmail.com> Link: https://lore.kernel.org/r/7937c1404ee327ce141cb03b3575b02ea01a740c.1569493933.git.shengjiu.wang@nxp.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-02ASoC: Remove dev_err() usage after platform_get_irq()Stephen Boyd
We don't need dev_err() messages when platform_get_irq() fails now that platform_get_irq() prints an error message itself when something goes wrong. Let's remove these prints with a simple semantic patch. // <smpl> @@ expression ret; struct platform_device *E; @@ ret = ( platform_get_irq(E, ...) | platform_get_irq_byname(E, ...) ); if ( \( ret < 0 \| ret <= 0 \) ) { ( -if (ret != -EPROBE_DEFER) -{ ... -dev_err(...); -... } | ... -dev_err(...); ) ... } // </smpl> While we're here, remove braces on if statements that only have one statement (manually). Cc: Liam Girdwood <lgirdwood@gmail.com> Cc: Mark Brown <broonie@kernel.org> Cc: Jaroslav Kysela <perex@perex.cz> Cc: Takashi Iwai <tiwai@suse.com> Cc: alsa-devel@alsa-project.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Stephen Boyd <swboyd@chromium.org> Link: https://lore.kernel.org/r/20190730181557.90391-50-swboyd@chromium.org Signed-off-by: Mark Brown <broonie@kernel.org>
2019-05-21ASoC: fsl_asrc: Unify the supported input and output rateS.j. Wang
Unify the supported input and output rate, add the 12kHz/24kHz/128kHz to the support list Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com> Acked-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-05-21Merge branch 'for-5.2' of ↵Mark Brown
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-5.3
2019-05-16ASoC: fsl_asrc: replace the process_option table with functionS.j. Wang
When we want to support more sample rate, for example 12kHz/24kHz we need update the process_option table, if we want to support more sample rate next time, the table need to be updated again. which is not flexible. We got a function fsl_asrc_sel_proc to replace the table, which can give the pre-processing and post-processing options according to the sample rate. Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com> Acked-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-05-16ASoC: fsl_asrc: Fix the issue about unsupported rateS.j. Wang
When the output sample rate is [8kHz, 30kHz], the limitation of the supported ratio range is [1/24, 8]. In the driver we use (8kHz, 30kHz) instead of [8kHz, 30kHz]. So this patch is to fix this issue and the potential rounding issue with divider. Fixes: fff6e03c7b65 ("ASoC: fsl_asrc: add support for 8-30kHz output sample rate") Cc: <stable@vger.kernel.org> Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com> Acked-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2019-03-21ASoC: fsl_asrc: add constraint for the asrc of older versionS.j. Wang
There is a constraint for the channel number setting on the asrc of older version (e.g. imx35), the channel number should be even, odd number isn't valid. So add this constraint when the asrc of older version is used. Acked-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-07-24ASoC: fsl_asrc: Switch to SPDX identifierFabio Estevam
Adopt the SPDX license identifier headers to ease license compliance management. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-02-12ASoC: fsl: asrc: replace platform to componentKuninori Morimoto
Now platform can be replaced to component, let's do it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Tested-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-07-17ASoC: fsl_asrc: constify snd_soc_dai_ops structureGustavo A. R. Silva
This structure is only stored in the ops field of a snd_soc_dai_driver structure. That field is declared const, so snd_soc_dai_ops structures that have this property can be declared as const also. Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-02-27scripts/spelling.txt: add "followings" pattern and fix typo instancesMasahiro Yamada
Fix typos and add the following to the scripts/spelling.txt: followings||following While we are here, add a missing colon in the boilerplate in DT binding documents. The "you SoC" in allwinner,sunxi-pinctrl.txt was fixed as well. I reworded "as the followings:" to "as follows:" for drivers/usb/gadget/udc/renesas_usb3.c. Link: http://lkml.kernel.org/r/1481573103-11329-32-git-send-email-yamada.masahiro@socionext.com Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-09-20ASoC: fsl_asrc: use flat regmap cacheMarek Vasut
Same as commit ce492b3b8f99cf9d2f807ec22d8805c996a09503 Subject: drm/fsl-dcu: use flat regmap cache Using flat regmap cache instead of RB-tree to avoid the following lockdep warning on driver load: WARNING: CPU: 0 PID: 1 at kernel/locking/lockdep.c:2871 lockdep_trace_alloc+0x104/0x128 DEBUG_LOCKS_WARN_ON(irqs_disabled_flags(flags)) The RB-tree regmap cache needs to allocate new space on first writes. However, allocations in an atomic context (e.g. when a spinlock is held) are not allowed. The function regmap_write calls map->lock, which acquires a spinlock in the fast_io case. Since the driver uses MMIO, the regmap bus of type regmap_mmio is being used which has fast_io set to true. Signed-off-by: Marek Vasut <marex@denx.de> Acked-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2016-08-19ASoC: fsl_asrc: Use np variableFabio Estevam
The 'np' variable is already assigned to 'pdev->dev.of_node', so use it to improve readability. No functional change. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2016-08-19ASoC: fsl_asrc: Remove unneeded driver registration messageFabio Estevam
There is no need to announce that the driver has been successfully probed, so remove the unneeded message. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2016-08-19ASoC: fsl_asrc: Propagate the real error codeFabio Estevam
Instead of returning -EINVAL on error, return the real error code. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2016-01-11Merge remote-tracking branches 'asoc/topic/fsl-asrc' and ↵Mark Brown
'asoc/topic/fsl-ssi' into asoc-next
2016-01-05ASoC: fsl_asrc: sound is wrong after suspend/resumeZidan Wang
The register ASRCFG is volatile, but some bits need to be recovered after suspend/resume. Signed-off-by: Zidan Wang <zidan.wang@freescale.com> Acked-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-12-23Merge remote-tracking branches 'asoc/topic/dpcm', 'asoc/topic/dwc', ↵Mark Brown
'asoc/topic/fsl', 'asoc/topic/fsl-asrc' and 'asoc/topic/fsl-esai' into asoc-next
2015-12-23ASoC: fsl_asrc: add support for 8-30kHz output sample rateZidan Wang
Add 8kHz, 11.025kHz, 16kHz, 22.05kHz output sample rate support. According referance menual, "Limited support for the case when output sampling rates is between 8kHz and 30kHz. The limitation is the supported ratio (Fsin/Fsout) range as between 1/24 to 8." Signed-off-by: Zidan Wang <zidan.wang@freescale.com> Acked-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-11-25ASoC: fsl_asrc: spba clock is needed by asrc deviceShengjiu Wang
ASRC need to enable the spba clock, when sdma is using share peripheral script. In this case, there is two spba master port is used, if don't enable the clock, the spba bus will have arbitration issue, which may cause read/write wrong data from/to ASRC registers Signed-off-by: Shengjiu Wang <shengjiu.wang@freescale.com> Acked-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-11-25ASoC: fsl: using params_width function to simplify codeZidan Wang
using params_width function to simplify code. Signed-off-by: Zidan Wang <zidan.wang@freescale.com> Acked-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-07ASoC: fsl: fsl_asrc: Check for clk_prepare_enable() errorFabio Estevam
clk_prepare_enable() may fail, so we should better check its return value and propagate it in the case of error. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-02-04Merge remote-tracking branches 'asoc/topic/doc', 'asoc/topic/dwc', ↵Mark Brown
'asoc/topic/fsi', 'asoc/topic/fsl' and 'asoc/topic/fsl-asrc' into asoc-next
2015-01-08ASoC: fsl_asrc: Make error message conciseFabio Estevam
Currently the error message uses 'np->full_name' which leads to a very verbose log that contains the full path of the node. We can have a concise log by using pdev->name instead. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-12-30ASoC: fsl_asrc: Use dev_name() for registering the irqFabio Estevam
The 'name' array is currently stored inside the fsl_asrc private structure only for registering the interrupt name. This can be simplified by registering it with dev_name() instead. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-12-13sound / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PMRafael J. Wysocki
After commit b2b49ccbdd54 (PM: Kconfig: Set PM_RUNTIME if PM_SLEEP is selected) PM_RUNTIME is always set if PM is set, so #ifdef blocks depending on CONFIG_PM_RUNTIME may now be changed to depend on CONFIG_PM. Replace CONFIG_PM_RUNTIME with CONFIG_PM everywhere under sound/. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Takashi Iwai <tiwai@suse.de> Acked-by: Nicolin Chen <nicoleotsuka@gmail.com> Acked-by: Brian Austin <brian.austin@cirrus.com> Acked-by: Mark Brown <broonie@kernel.org>
2014-11-17Merge remote-tracking branches 'asoc/fix/adsp', 'asoc/fix/cs41l51', ↵Mark Brown
'asoc/fix/dpcm', 'asoc/fix/es8328', 'asoc/fix/fsl-asrc', 'asoc/fix/max98090', 'asoc/fix/rcar', 'asoc/fix/rockchip' and 'asoc/fix/rt5645' into asoc-linus
2014-10-28ASoC: fsl_asrc: Add reg_defaults for regmap to fix kernel dumpNicolin Chen
Kernel dump (WARN_ON) ocurred during system boot-up inside regmap_write(): ------------[ cut here ]------------ WARNING: CPU: 0 PID: 47 at kernel/locking/lockdep.c:2744 lockdep_trace_alloc+0xe8/0x108() DEBUG_LOCKS_WARN_ON(irqs_disabled_flags(flags)) Modules linked in: CPU: 0 PID: 47 Comm: kworker/u2:2 Not tainted 3.18.0-rc1-10245-gb75d289-dirty #56 Workqueue: deferwq deferred_probe_work_func Backtrace: [<80012294>] (dump_backtrace) from [<80012578>] (show_stack+0x18/0x1c) r6:8097c73c r5:8097c73c r4:00000000 r3:be33ba80 [<80012560>] (show_stack) from [<806aac48>] (dump_stack+0x8c/0xa4) [<806aabbc>] (dump_stack) from [<8002a694>] (warn_slowpath_common+0x70/0x94) r6:80062838 r5:00000009 r4:bd827b30 r3:be33ba80 [<8002a624>] (warn_slowpath_common) from [<8002a6f0>] (warn_slowpath_fmt+0x38/0x40) r8:00000004 r7:00000001 r6:000080d0 r5:60000193 r4:bd826010 [<8002a6bc>] (warn_slowpath_fmt) from [<80062838>] (lockdep_trace_alloc+0xe8/0x108) r3:80831590 r2:8082e160 [<80062750>] (lockdep_trace_alloc) from [<800ea5dc>] (kmem_cache_alloc+0x28/0x134) r5:000080d0 r4:be001f00 [<800ea5b4>] (kmem_cache_alloc) from [<8038d72c>] (regcache_rbtree_write+0x15c/0x648) r10:00000000 r9:0000001c r8:00000004 r7:00000001 r6:00000000 r5:bd819a00 r4:00000000 r3:811aea88 [<8038d5d0>] (regcache_rbtree_write) from [<8038c4d8>] (regcache_write+0x5c/0x64) r10:be3f9f88 r9:00000000 r8:00000004 r7:00000001 r6:00000000 r5:00000001 r4:bd819a00 [<8038c47c>] (regcache_write) from [<8038b0dc>] (_regmap_raw_write+0x134/0x5f4) r6:be3f9f84 r5:00000001 r4:bd819a00 r3:00000001 [<8038afa8>] (_regmap_raw_write) from [<8038b610>] (_regmap_bus_raw_write+0x74/0x94) r10:00000000 r9:00000001 r8:be3fb080 r7:bd819a00 r6:00000001 r5:00000000 r4:bd819a00 [<8038b59c>] (_regmap_bus_raw_write) from [<8038a8b4>] (_regmap_write+0x60/0x9c) r6:00000001 r5:00000000 r4:bd819a00 r3:8038b59c [<8038a854>] (_regmap_write) from [<8038ba24>] (regmap_write+0x48/0x68) r7:bd81ad80 r6:00000001 r5:00000000 r4:bd819a00 [<8038b9dc>] (regmap_write) from [<80528f30>] (fsl_asrc_dai_probe+0x34/0x104) r6:bd888628 r5:be3fb080 r4:be3b4410 r3:be3b442c ------------[ dump end ]------------ ============================================================================= 2741 /* 2742 * Oi! Can't be having __GFP_FS allocations with IRQs disabled. 2743 */ 2744 if (DEBUG_LOCKS_WARN_ON(irqs_disabled_flags(flags))) 2745 return; ============================================================================= By looking at 2744 line, we can get that it's because regcache_rbtree_write() would call kmalloc() with GFP flag if it couldn't find an existing block to insert nodes while this kmalloc() call is inside a spin_lock_irq_save pair, i.e. IRQs disabled. Even though this may be a bug that should be fixed, I still try to send this patch as a quick fix (work around) since it does no harm to assign default values of every registers when using regcache. Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-10-22ASoC: fsl: use strncpy() to prevent copying of over-long namesDaniel Mack
Use strncpy() instead of strcpy(). That's not a security issue, as the source buffer is taken from DT nodes, but we should still enforce bound checks. Spotted by Coverity. Signed-off-by: Daniel Mack <daniel@zonque.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-08-27ASoC: fsl-asrc: Convert to use regmap framework's endianness method.Xiubo Li
Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com> Acked-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-08-04ASoC: fsl_asrc: Don't access members of config before checking itNicolin Chen
sound/soc/fsl/fsl_asrc.c:250 fsl_asrc_config_pair() warn: variable dereferenced before check 'config' (see line 243) git remote add next git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git remote update next git checkout 3117bb3109dc223e186302f5dc8ce9ed04adca90 vim +/config +250 sound/soc/fsl/fsl_asrc.c 237 */ 238 static int fsl_asrc_config_pair(struct fsl_asrc_pair *pair) 239 { 240 struct asrc_config *config = pair->config; 241 struct fsl_asrc *asrc_priv = pair->asrc_priv; 242 enum asrc_pair_index index = pair->index; @243 u32 inrate = config->input_sample_rate, indiv; 244 u32 outrate = config->output_sample_rate, outdiv; 245 bool ideal = config->inclk == INCLK_NONE; 246 u32 clk_index[2], div[2]; 247 int in, out, channels; 248 struct clk *clk; 249 @250 if (!config) { 251 pair_err("invalid pair config\n"); 252 return -EINVAL; 253 } Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-07-31ASoC: fsl_asrc: fix an error code in fsl_asrc_probe()Dan Carpenter
There is a cut and paste bug so it returns success instead of the error code. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-07-31ASoC: fsl_asrc: Fix sparse warnings in FSL_ASRC_FORMATS due to typoNicolin Chen
reproduce: make C=1 CF=-D__CHECK_ENDIAN__ sparse warnings: (new ones prefixed by >>) >> sound/soc/fsl/fsl_asrc.c:563:28: sparse: restricted snd_pcm_format_t degrades to integer >> sound/soc/fsl/fsl_asrc.c:570:28: sparse: restricted snd_pcm_format_t degrades to integer vim +563 sound/soc/fsl/fsl_asrc.c 557 .probe = fsl_asrc_dai_probe, 558 .playback = { 559 .stream_name = "ASRC-Playback", 560 .channels_min = 1, 561 .channels_max = 10, 562 .rates = FSL_ASRC_RATES, > 563 .formats = FSL_ASRC_FORMATS, 564 }, 565 .capture = { 566 .stream_name = "ASRC-Capture", 567 .channels_min = 1, 568 .channels_max = 10, 569 .rates = FSL_ASRC_RATES, > 570 .formats = FSL_ASRC_FORMATS, 571 }, 572 .ops = &fsl_asrc_dai_ops, 573 }; Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-07-29ASoC: fsl_asrc: Use 'ifdef' for config optionsFabio Estevam
Fix the following build errors that were observed by building with make ARCH=microblaze allyesconfig: >> sound/soc/fsl/fsl_asrc.c:906:5: warning: "CONFIG_PM_RUNTIME" is not defined [-Wundef] #if CONFIG_PM_RUNTIME ^ >> sound/soc/fsl/fsl_asrc.c:934:5: warning: "CONFIG_PM_SLEEP" is not defined [-Wundef] #if CONFIG_PM_SLEEP ^ >> sound/soc/fsl/fsl_asrc.c:906:5: warning: "CONFIG_PM_RUNTIME" is not defined [-Wundef] #if CONFIG_PM_RUNTIME ^ >> sound/soc/fsl/fsl_asrc.c:934:5: warning: "CONFIG_PM_SLEEP" is not defined [-Wundef] #if CONFIG_PM_SLEEP Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-07-29ASoC: fsl_asrc: Add ASRC ASoC CPU DAI and platform driversNicolin Chen
The Asynchronous Sample Rate Converter (ASRC) converts the sampling rate of a signal associated with an input clock into a signal associated with a different output clock. The driver currently works as a Front End of DPCM with other Back Ends DAI links such as ESAI<->CS42888 and SSI<->WM8962 and SAI. It converts the original sample rate to a common rate supported by Back Ends for playback while converts the common rate of Back Ends to a desired rate for capture. It has 3 pairs to support three different substreams within totally 10 channels. Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com> Reviewed-by: Varka Bhadram <varkabhadram@gmail.com> Signed-off-by: Mark Brown <broonie@linaro.org>
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