[alsa-devel] [PATCH 1/2] ASoC: samsung: Provide helper for DMA init
From: Mark Brown broonie@linaro.org
In preparation for using the dmaengine helpers in ASoC rather than the dmaengine wrappers for the Samsung API wrap the configuration of dma_data. The dmaengine code expects different data to that used by the legacy API.
Signed-off-by: Mark Brown broonie@linaro.org ---
This will need merging with the fix patch I sent earlier, I'l do that assuming this is OK.
sound/soc/samsung/ac97.c | 51 +++++++++++++++--------------------------------- sound/soc/samsung/dma.c | 8 ++++++++ sound/soc/samsung/dma.h | 3 +++ sound/soc/samsung/i2s.c | 7 +++++-- sound/soc/samsung/pcm.c | 18 +++++++++-------- 5 files changed, 42 insertions(+), 45 deletions(-)
diff --git a/sound/soc/samsung/ac97.c b/sound/soc/samsung/ac97.c index 350ba23a9893..4a88e36c82ec 100644 --- a/sound/soc/samsung/ac97.c +++ b/sound/soc/samsung/ac97.c @@ -221,24 +221,6 @@ static struct snd_ac97_bus_ops s3c_ac97_ops = { .reset = s3c_ac97_cold_reset, };
-static int s3c_ac97_hw_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *params, - struct snd_soc_dai *dai) -{ - struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; - struct s3c_dma_params *dma_data; - - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - dma_data = &s3c_ac97_pcm_out; - else - dma_data = &s3c_ac97_pcm_in; - - snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data); - - return 0; -} - static int s3c_ac97_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) { @@ -279,21 +261,6 @@ static int s3c_ac97_trigger(struct snd_pcm_substream *substream, int cmd, return 0; }
-static int s3c_ac97_hw_mic_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *params, - struct snd_soc_dai *dai) -{ - struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct snd_soc_dai *cpu_dai = rtd->cpu_dai; - - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - return -ENODEV; - else - snd_soc_dai_set_dma_data(cpu_dai, substream, &s3c_ac97_mic_in); - - return 0; -} - static int s3c_ac97_mic_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) { @@ -329,15 +296,27 @@ static int s3c_ac97_mic_trigger(struct snd_pcm_substream *substream, }
static const struct snd_soc_dai_ops s3c_ac97_dai_ops = { - .hw_params = s3c_ac97_hw_params, .trigger = s3c_ac97_trigger, };
static const struct snd_soc_dai_ops s3c_ac97_mic_dai_ops = { - .hw_params = s3c_ac97_hw_mic_params, .trigger = s3c_ac97_mic_trigger, };
+static int s3c_ac97_dai_probe(struct snd_soc_dai *dai) +{ + samsung_asoc_init_dma_data(dai, &s3c_ac97_pcm_out, &s3c_ac97_pcm_in); + + return 0; +} + +static int s3c_ac97_mic_dai_probe(struct snd_soc_dai *dai) +{ + samsung_asoc_init_dma_data(dai, NULL, &s3c_ac97_mic_in); + + return 0; +} + static struct snd_soc_dai_driver s3c_ac97_dai[] = { [S3C_AC97_DAI_PCM] = { .name = "samsung-ac97", @@ -354,6 +333,7 @@ static struct snd_soc_dai_driver s3c_ac97_dai[] = { .channels_max = 2, .rates = SNDRV_PCM_RATE_8000_48000, .formats = SNDRV_PCM_FMTBIT_S16_LE,}, + .probe = s3c_ac97_dai_probe, .ops = &s3c_ac97_dai_ops, }, [S3C_AC97_DAI_MIC] = { @@ -365,6 +345,7 @@ static struct snd_soc_dai_driver s3c_ac97_dai[] = { .channels_max = 1, .rates = SNDRV_PCM_RATE_8000_48000, .formats = SNDRV_PCM_FMTBIT_S16_LE,}, + .probe = s3c_ac97_mic_dai_probe, .ops = &s3c_ac97_mic_dai_ops, }, }; diff --git a/sound/soc/samsung/dma.c b/sound/soc/samsung/dma.c index fe2748b494d4..ee23194f7ab8 100644 --- a/sound/soc/samsung/dma.c +++ b/sound/soc/samsung/dma.c @@ -441,6 +441,14 @@ static struct snd_soc_platform_driver samsung_asoc_platform = { .pcm_free = dma_free_dma_buffers, };
+void samsung_asoc_init_dma_data(struct snd_soc_dai *dai, + struct s3c_dma_params *playback, + struct s3c_dma_params *capture) +{ + snd_soc_dai_init_dma_data(dai, playback, capture); +} +EXPORT_SYMBOL_GPL(samsung_asoc_init_dma_data); + int samsung_asoc_dma_platform_register(struct device *dev) { return snd_soc_register_platform(dev, &samsung_asoc_platform); diff --git a/sound/soc/samsung/dma.h b/sound/soc/samsung/dma.h index 0e86315a3eaf..fb09a1c5f75b 100644 --- a/sound/soc/samsung/dma.h +++ b/sound/soc/samsung/dma.h @@ -22,6 +22,9 @@ struct s3c_dma_params { char *ch_name; };
+void samsung_asoc_init_dma_data(struct snd_soc_dai *dai, + struct s3c_dma_params *playback, + struct s3c_dma_params *capture); int samsung_asoc_dma_platform_register(struct device *dev); void samsung_asoc_dma_platform_unregister(struct device *dev);
diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c index a5cbdb4f1655..eab0050d4579 100644 --- a/sound/soc/samsung/i2s.c +++ b/sound/soc/samsung/i2s.c @@ -946,8 +946,11 @@ static int samsung_i2s_dai_probe(struct snd_soc_dai *dai) struct i2s_dai *i2s = to_info(dai); struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai;
- if (other && other->clk) /* If this is probe on secondary */ + if (other && other->clk) { /* If this is probe on secondary */ + samsung_asoc_init_dma_data(dai, &other->sec_dai->dma_playback, + NULL); goto probe_exit; + }
i2s->addr = ioremap(i2s->base, 0x100); if (i2s->addr == NULL) { @@ -963,7 +966,7 @@ static int samsung_i2s_dai_probe(struct snd_soc_dai *dai) } clk_prepare_enable(i2s->clk);
- snd_soc_dai_init_dma_data(dai, &i2s->dma_playback, &i2s->dma_capture); + samsung_asoc_init_dma_data(dai, &i2s->dma_playback, &i2s->dma_capture);
if (other) { other->addr = i2s->addr; diff --git a/sound/soc/samsung/pcm.c b/sound/soc/samsung/pcm.c index e54256fc4b2c..6a5e4bf6ac96 100644 --- a/sound/soc/samsung/pcm.c +++ b/sound/soc/samsung/pcm.c @@ -275,7 +275,6 @@ static int s3c_pcm_hw_params(struct snd_pcm_substream *substream, { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct s3c_pcm_info *pcm = snd_soc_dai_get_drvdata(rtd->cpu_dai); - struct s3c_dma_params *dma_data; void __iomem *regs = pcm->regs; struct clk *clk; int sclk_div, sync_div; @@ -284,13 +283,6 @@ static int s3c_pcm_hw_params(struct snd_pcm_substream *substream,
dev_dbg(pcm->dev, "Entered %s\n", __func__);
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - dma_data = pcm->dma_playback; - else - dma_data = pcm->dma_capture; - - snd_soc_dai_set_dma_data(rtd->cpu_dai, substream, dma_data); - /* Strictly check for sample size */ switch (params_format(params)) { case SNDRV_PCM_FORMAT_S16_LE: @@ -461,10 +453,20 @@ static const struct snd_soc_dai_ops s3c_pcm_dai_ops = { .set_fmt = s3c_pcm_set_fmt, };
+static int s3c_pcm_dai_probe(struct snd_soc_dai *dai) +{ + struct s3c_pcm_info *pcm = snd_soc_dai_get_drvdata(dai); + + snd_soc_dai_init_dma_data(dai, pcm->dma_playback, pcm->dma_capture); + + return 0; +} + #define S3C_PCM_RATES SNDRV_PCM_RATE_8000_96000
#define S3C_PCM_DAI_DECLARE \ .symmetric_rates = 1, \ + .probe = s3c_pcm_dai_probe, \ .ops = &s3c_pcm_dai_ops, \ .playback = { \ .channels_min = 2, \
From: Mark Brown broonie@linaro.org
Since all Exynos platforms have been converted to dmaengine and many of the older platforms are in the process of conversion they do not need to use the legacy s3c-dma APIs for DMA but can instead use the standard ASoC dmaengine helpers. This both allows them to benefit from improvements implemented in the generic code and supports multiplatform.
This patch includes some fixes from Padma for Exynos SoCs.
Signed-off-by: Mark Brown broonie@linaro.org Tested By: Padmavathi Venna padma.v@samsung.com ---
I think this should reflect all your testing but a recheck would be good.
sound/soc/samsung/Kconfig | 13 +++++-- sound/soc/samsung/Makefile | 6 ++-- sound/soc/samsung/dma.h | 3 ++ sound/soc/samsung/dmaengine.c | 84 +++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 102 insertions(+), 4 deletions(-) create mode 100644 sound/soc/samsung/dmaengine.c
diff --git a/sound/soc/samsung/Kconfig b/sound/soc/samsung/Kconfig index 37459dfd168d..27930fc432dc 100644 --- a/sound/soc/samsung/Kconfig +++ b/sound/soc/samsung/Kconfig @@ -1,13 +1,22 @@ config SND_SOC_SAMSUNG tristate "ASoC support for Samsung" depends on PLAT_SAMSUNG - select S3C64XX_DMA if ARCH_S3C64XX - select S3C24XX_DMA if ARCH_S3C24XX + select S3C2410_DMA if ARCH_S3C24XX + select S3C64XX_PL080 if ARCH_S3C64XX + select SND_S3C_DMA if !ARCH_S3C24XX + select SND_S3C_DMA_LEGACY if ARCH_S3C24XX + select SND_SOC_GENERIC_DMAENGINE_PCM if !ARCH_S3C24XX help Say Y or M if you want to add support for codecs attached to the Samsung SoCs' Audio interfaces. You will also need to select the audio interfaces to support below.
+config SND_S3C_DMA + tristate + +config SND_S3C_DMA_LEGACY + tristate + config SND_S3C24XX_I2S tristate select S3C2410_DMA diff --git a/sound/soc/samsung/Makefile b/sound/soc/samsung/Makefile index 709f6059ad67..86715d8efee6 100644 --- a/sound/soc/samsung/Makefile +++ b/sound/soc/samsung/Makefile @@ -1,5 +1,6 @@ # S3c24XX Platform Support -snd-soc-s3c24xx-objs := dma.o +snd-soc-s3c-dma-objs := dmaengine.o +snd-soc-s3c-dma-legacy-objs := dma.o snd-soc-idma-objs := idma.o snd-soc-s3c24xx-i2s-objs := s3c24xx-i2s.o snd-soc-s3c2412-i2s-objs := s3c2412-i2s.o @@ -9,7 +10,8 @@ snd-soc-samsung-spdif-objs := spdif.o snd-soc-pcm-objs := pcm.o snd-soc-i2s-objs := i2s.o
-obj-$(CONFIG_SND_SOC_SAMSUNG) += snd-soc-s3c24xx.o +obj-$(CONFIG_SND_S3C_DMA) += snd-soc-s3c-dma.o +obj-$(CONFIG_SND_S3C_DMA_LEGACY) += snd-soc-s3c-dma-legacy.o obj-$(CONFIG_SND_S3C24XX_I2S) += snd-soc-s3c24xx-i2s.o obj-$(CONFIG_SND_SAMSUNG_AC97) += snd-soc-ac97.o obj-$(CONFIG_SND_S3C2412_SOC_I2S) += snd-soc-s3c2412-i2s.o diff --git a/sound/soc/samsung/dma.h b/sound/soc/samsung/dma.h index fb09a1c5f75b..225e5378014e 100644 --- a/sound/soc/samsung/dma.h +++ b/sound/soc/samsung/dma.h @@ -12,6 +12,8 @@ #ifndef _S3C_AUDIO_H #define _S3C_AUDIO_H
+#include <sound/dmaengine_pcm.h> + struct s3c_dma_params { struct s3c2410_dma_client *client; /* stream identifier */ int channel; /* Channel ID */ @@ -20,6 +22,7 @@ struct s3c_dma_params { unsigned ch; struct samsung_dma_ops *ops; char *ch_name; + struct snd_dmaengine_dai_dma_data dma_data; };
void samsung_asoc_init_dma_data(struct snd_soc_dai *dai, diff --git a/sound/soc/samsung/dmaengine.c b/sound/soc/samsung/dmaengine.c new file mode 100644 index 000000000000..896500fedca1 --- /dev/null +++ b/sound/soc/samsung/dmaengine.c @@ -0,0 +1,84 @@ +/* + * dmaengine.c - Samsung dmaengine wrapper + * + * Author: Mark Brown broonie@linaro.org + * Copyright 2013 Linaro + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + */ + +#include <linux/module.h> +#include <linux/amba/pl08x.h> + +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/dmaengine_pcm.h> +#include <sound/soc.h> +#include <sound/soc-dai.h> + +#include "dma.h" + +#ifdef CONFIG_ARCH_S3C64XX +#define filter_fn pl08x_filter_id +#else +#define filter_fn NULL +#endif + +static const struct snd_dmaengine_pcm_config samsung_dmaengine_pcm_config = { + .prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config, + .compat_filter_fn = filter_fn, +}; + +void samsung_asoc_init_dma_data(struct snd_soc_dai *dai, + struct s3c_dma_params *playback, + struct s3c_dma_params *capture) +{ + struct snd_dmaengine_dai_dma_data *playback_data = NULL; + struct snd_dmaengine_dai_dma_data *capture_data = NULL; + + if (playback) { + playback_data = &playback->dma_data; + playback_data->filter_data = (void *)playback->channel; + playback_data->chan_name = playback->ch_name; + playback_data->addr = playback->dma_addr; + playback_data->addr_width = playback->dma_size; + } + if (capture) { + capture_data = &capture->dma_data; + capture_data->filter_data = (void *)capture->channel; + capture_data->chan_name = capture->ch_name; + capture_data->addr = capture->dma_addr; + capture_data->addr_width = capture->dma_size; + } + + snd_soc_dai_init_dma_data(dai, playback_data, capture_data); +} +EXPORT_SYMBOL_GPL(samsung_asoc_init_dma_data); + +int samsung_asoc_dma_platform_register(struct device *dev) +{ + return snd_dmaengine_pcm_register(dev, &samsung_dmaengine_pcm_config, + SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME | + SND_DMAENGINE_PCM_NO_RESIDUE | + SND_DMAENGINE_PCM_FLAG_COMPAT); +} +EXPORT_SYMBOL_GPL(samsung_asoc_dma_platform_register); + +void samsung_asoc_dma_platform_unregister(struct device *dev) +{ + return snd_dmaengine_pcm_unregister(dev); +} +EXPORT_SYMBOL_GPL(samsung_asoc_dma_platform_unregister); + +MODULE_AUTHOR("Mark Brown broonie@linaro.org"); +MODULE_DESCRIPTION("Samsung dmaengine ASoC driver"); +MODULE_LICENSE("GPL");
Hi Mark,
On Thu, Dec 5, 2013 at 7:55 PM, Mark Brown broonie@kernel.org wrote:
From: Mark Brown broonie@linaro.org
Since all Exynos platforms have been converted to dmaengine and many of the older platforms are in the process of conversion they do not need to use the legacy s3c-dma APIs for DMA but can instead use the standard ASoC dmaengine helpers. This both allows them to benefit from improvements implemented in the generic code and supports multiplatform.
This patch includes some fixes from Padma for Exynos SoCs.
Signed-off-by: Mark Brown broonie@linaro.org Tested By: Padmavathi Venna padma.v@samsung.com
I think this should reflect all your testing but a recheck would be good.
I couldn't test this patch set due to some crash in recent kernel in dmaengine_unmap_put. I think this unmap support is not yet implemented for pl330 driver. It is mentioned in the commit "dmaengine: prepare for generic 'unmap' data", [bzolnier: prepare pl330 driver for adding missing unmap while at it].
[snip]
+int samsung_asoc_dma_platform_register(struct device *dev) +{
return snd_dmaengine_pcm_register(dev, &samsung_dmaengine_pcm_config,SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME |SND_DMAENGINE_PCM_NO_RESIDUE |
This flag should be SND_DMAENGINE_PCM_FLAG_NO_RESIDUE.
SND_DMAENGINE_PCM_FLAG_COMPAT);+} +EXPORT_SYMBOL_GPL(samsung_asoc_dma_platform_register);
Thanks Padma
On Fri, Dec 06, 2013 at 10:44:19AM +0530, Padma Venkat wrote:
I couldn't test this patch set due to some crash in recent kernel in dmaengine_unmap_put. I think this unmap support is not yet implemented for pl330 driver. It is mentioned in the commit "dmaengine: prepare for generic 'unmap' data", [bzolnier: prepare pl330 driver for adding missing unmap while at it].
This is unfortunate... I'd suggest trying mainline but I see it's broken in Linus' tree too and no fixes in -next. :(
I'm tempted to push up with your Tested-by a note saying you did your testing on an earlier version but weren't able to test due to other bugs.
Hi Mark,
On Mon, Dec 9, 2013 at 11:00 PM, Mark Brown broonie@kernel.org wrote:
On Fri, Dec 06, 2013 at 10:44:19AM +0530, Padma Venkat wrote:
I couldn't test this patch set due to some crash in recent kernel in dmaengine_unmap_put. I think this unmap support is not yet implemented for pl330 driver. It is mentioned in the commit "dmaengine: prepare for generic 'unmap' data", [bzolnier: prepare pl330 driver for adding missing unmap while at it].
This is unfortunate... I'd suggest trying mainline but I see it's broken in Linus' tree too and no fixes in -next. :(
I'm tempted to push up with your Tested-by a note saying you did your testing on an earlier version but weren't able to test due to other bugs.
I managed to test your latest version of these patches(posted on Dec6th) on earlier version of linux-samsung tree. May be you can push up these patches with my Tested-by.
Thanks Padma
On Tue, Dec 10, 2013 at 10:09:05PM +0530, Padma Venkat wrote:
On Mon, Dec 9, 2013 at 11:00 PM, Mark Brown broonie@kernel.org wrote:
This is unfortunate... I'd suggest trying mainline but I see it's broken in Linus' tree too and no fixes in -next. :(
I'm tempted to push up with your Tested-by a note saying you did your testing on an earlier version but weren't able to test due to other bugs.
I managed to test your latest version of these patches(posted on Dec6th) on earlier version of linux-samsung tree. May be you can push up these patches with my Tested-by.
Yeah, that was what I was planning - I was just going to add a note saying you'd not been able to test this version due to the other breakage so if it turns out to have problems people know it was something I introduced after your testing.
Hi Mark,
On Thu, Dec 5, 2013 at 7:55 PM, Mark Brown broonie@kernel.org wrote:
From: Mark Brown broonie@linaro.org
In preparation for using the dmaengine helpers in ASoC rather than the dmaengine wrappers for the Samsung API wrap the configuration of dma_data. The dmaengine code expects different data to that used by the legacy API.
Signed-off-by: Mark Brown broonie@linaro.org
This will need merging with the fix patch I sent earlier, I'l do that assuming this is OK.
[snip]
diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c index a5cbdb4f1655..eab0050d4579 100644 --- a/sound/soc/samsung/i2s.c +++ b/sound/soc/samsung/i2s.c @@ -946,8 +946,11 @@ static int samsung_i2s_dai_probe(struct snd_soc_dai *dai) struct i2s_dai *i2s = to_info(dai); struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai;
if (other && other->clk) /* If this is probe on secondary */
if (other && other->clk) { /* If this is probe on secondary */samsung_asoc_init_dma_data(dai, &other->sec_dai->dma_playback,NULL); goto probe_exit;}
This is done in your earlier patch " ASoC: samsung: Ensure DMA data is initialised for secondary DAI ". Was it done on purpose or by mistake in this patch?
I think you also told to include a patch for reinitialization of the dma_data in i2s_hw_params. If you are in the process of debugging some bug as you mentioned earlier you can ignore this comment. Otherwise it is just a reminder.
Thanks Padma
On Fri, Dec 06, 2013 at 10:44:33AM +0530, Padma Venkat wrote:
This is done in your earlier patch " ASoC: samsung: Ensure DMA data is initialised for secondary DAI ". Was it done on purpose or by mistake in this patch?
It's intentional - notice that the function has changed, this is why I kept asking you about mainline. Mainline doesn't have the wrapper function that abstracts the difference between s3c-dma and dmaengine, this is why I'm saying these two will need to be rebased on top of the mainline fix.
I think you also told to include a patch for reinitialization of the dma_data in i2s_hw_params. If you are in the process of debugging some bug as you mentioned earlier you can ignore this comment. Otherwise it is just a reminder.
Hrm, forgot to commit that bit.
Hi Mark,
On Fri, Dec 6, 2013 at 4:57 PM, Mark Brown broonie@kernel.org wrote:
On Fri, Dec 06, 2013 at 10:44:33AM +0530, Padma Venkat wrote:
This is done in your earlier patch " ASoC: samsung: Ensure DMA data is initialised for secondary DAI ". Was it done on purpose or by mistake in this patch?
It's intentional - notice that the function has changed, this is why I kept asking you about mainline. Mainline doesn't have the wrapper function that abstracts the difference between s3c-dma and dmaengine, this is why I'm saying these two will need to be rebased on top of the mainline fix.
Ok. I didn't notice the function name. Then this commit is not required in the mainline. This is required only after your changes because in dmaengine we are requesting the dma channel statically but in mainline(with samsung proprietary ops) we are requesting the dma channel at run time during playback or capture.
I think you also told to include a patch for reinitialization of the dma_data in i2s_hw_params. If you are in the process of debugging some bug as you mentioned earlier you can ignore this comment. Otherwise it is just a reminder.
Hrm, forgot to commit that bit.
Thanks Padma
Hi Mark,
On Mon, Dec 9, 2013 at 5:30 PM, Padma Venkat padma.kvr@gmail.com wrote:
Hi Mark,
On Fri, Dec 6, 2013 at 4:57 PM, Mark Brown broonie@kernel.org wrote:
On Fri, Dec 06, 2013 at 10:44:33AM +0530, Padma Venkat wrote:
This is done in your earlier patch " ASoC: samsung: Ensure DMA data is initialised for secondary DAI ". Was it done on purpose or by mistake in this patch?
It's intentional - notice that the function has changed, this is why I kept asking you about mainline. Mainline doesn't have the wrapper function that abstracts the difference between s3c-dma and dmaengine, this is why I'm saying these two will need to be rebased on top of the mainline fix.
Ok. I didn't notice the function name. Then this commit is not required in the mainline. This is required only after your changes because in dmaengine we are requesting the dma channel statically but in mainline(with samsung proprietary ops) we are requesting the dma channel at run time during playback or capture.
sorry for the mix-up. I think we need to set the dma data for the secondary dai even in mainline.
I think you also told to include a patch for reinitialization of the dma_data in i2s_hw_params. If you are in the process of debugging some bug as you mentioned earlier you can ignore this comment. Otherwise it is just a reminder.
Hrm, forgot to commit that bit.
Thanks Padma
On Mon, Dec 09, 2013 at 05:30:47PM +0530, Padma Venkat wrote:
This is required only after your changes because in dmaengine we are requesting the dma channel statically but in mainline(with samsung proprietary ops) we are requesting the dma channel at run time during playback or capture.
OK, so it does get set somewhere but not here?
participants (2)
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Mark Brown -
Padma Venkat