The patch
ASoC: samsung: Specify DMA channels through struct snd_dmaengine_pcm_config
has been applied to the asoc tree at
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying to this mail.
Thanks, Mark
From 42a74e77471ea42e6ab44e5be16723ede72b9901 Mon Sep 17 00:00:00 2001
From: Sylwester Nawrocki s.nawrocki@samsung.com Date: Thu, 21 Jul 2016 20:03:50 +0200 Subject: [PATCH] ASoC: samsung: Specify DMA channels through struct snd_dmaengine_pcm_config
The DMA channel names are specified through struct snd_dmaengine_pcm_config rather than using SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME flag when booting with devicetree in order to properly support deferred probing. Without this change the sound machine driver initialization can complete successfully with unavailable DMA resources.
Signed-off-by: Sylwester Nawrocki s.nawrocki@samsung.com Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/samsung/ac97.c | 3 ++- sound/soc/samsung/dma.h | 9 ++++++--- sound/soc/samsung/dmaengine.c | 31 ++++++++++++++++++++----------- sound/soc/samsung/i2s.c | 5 +++-- sound/soc/samsung/pcm.c | 3 ++- sound/soc/samsung/s3c2412-i2s.c | 3 ++- sound/soc/samsung/s3c24xx-i2s.c | 3 ++- sound/soc/samsung/spdif.c | 3 ++- 8 files changed, 39 insertions(+), 21 deletions(-)
diff --git a/sound/soc/samsung/ac97.c b/sound/soc/samsung/ac97.c index 4a7a503fe13c..547d31032088 100644 --- a/sound/soc/samsung/ac97.c +++ b/sound/soc/samsung/ac97.c @@ -389,7 +389,8 @@ static int s3c_ac97_probe(struct platform_device *pdev) goto err5;
ret = samsung_asoc_dma_platform_register(&pdev->dev, - ac97_pdata->dma_filter); + ac97_pdata->dma_filter, + NULL, NULL); if (ret) { dev_err(&pdev->dev, "failed to get register DMA: %d\n", ret); goto err5; diff --git a/sound/soc/samsung/dma.h b/sound/soc/samsung/dma.h index a7616cc9b39e..3830f297e0b6 100644 --- a/sound/soc/samsung/dma.h +++ b/sound/soc/samsung/dma.h @@ -26,7 +26,10 @@ struct s3c_dma_params { 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, - dma_filter_fn fn); - +/* + * @tx, @rx arguments can be NULL if the DMA channel names are "tx", "rx", + * otherwise actual DMA channel names must be passed to this function. + */ +int samsung_asoc_dma_platform_register(struct device *dev, dma_filter_fn filter, + const char *tx, const char *rx); #endif diff --git a/sound/soc/samsung/dmaengine.c b/sound/soc/samsung/dmaengine.c index 063125937311..2c87f380bfc4 100644 --- a/sound/soc/samsung/dmaengine.c +++ b/sound/soc/samsung/dmaengine.c @@ -28,10 +28,6 @@
#include "dma.h"
-static struct snd_dmaengine_pcm_config samsung_dmaengine_pcm_config = { - .prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config, -}; - void samsung_asoc_init_dma_data(struct snd_soc_dai *dai, struct s3c_dma_params *playback, struct s3c_dma_params *capture) @@ -58,15 +54,28 @@ void samsung_asoc_init_dma_data(struct snd_soc_dai *dai, } EXPORT_SYMBOL_GPL(samsung_asoc_init_dma_data);
-int samsung_asoc_dma_platform_register(struct device *dev, - dma_filter_fn filter) +int samsung_asoc_dma_platform_register(struct device *dev, dma_filter_fn filter, + const char *tx, const char *rx) { - samsung_dmaengine_pcm_config.compat_filter_fn = filter; + unsigned int flags = SND_DMAENGINE_PCM_FLAG_COMPAT; + + struct snd_dmaengine_pcm_config *pcm_conf; + + pcm_conf = devm_kzalloc(dev, sizeof(*pcm_conf), GFP_KERNEL); + if (!pcm_conf) + return -ENOMEM; + + pcm_conf->prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config; + pcm_conf->compat_filter_fn = filter; + + if (dev->of_node) { + pcm_conf->chan_names[SNDRV_PCM_STREAM_PLAYBACK] = tx; + pcm_conf->chan_names[SNDRV_PCM_STREAM_CAPTURE] = rx; + } else { + flags |= SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME; + }
- return devm_snd_dmaengine_pcm_register(dev, - &samsung_dmaengine_pcm_config, - SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME | - SND_DMAENGINE_PCM_FLAG_COMPAT); + return devm_snd_dmaengine_pcm_register(dev, pcm_conf, flags); } EXPORT_SYMBOL_GPL(samsung_asoc_dma_platform_register);
diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c index 2bb35502b070..50635ee8ff20 100644 --- a/sound/soc/samsung/i2s.c +++ b/sound/soc/samsung/i2s.c @@ -1244,7 +1244,7 @@ static int samsung_i2s_probe(struct platform_device *pdev) return ret;
return samsung_asoc_dma_platform_register(&pdev->dev, - sec_dai->filter); + sec_dai->filter, "tx-sec", NULL); }
pri_dai = i2s_alloc_dai(pdev, false); @@ -1351,7 +1351,8 @@ static int samsung_i2s_probe(struct platform_device *pdev) if (ret < 0) goto err_free_dai;
- ret = samsung_asoc_dma_platform_register(&pdev->dev, pri_dai->filter); + ret = samsung_asoc_dma_platform_register(&pdev->dev, pri_dai->filter, + NULL, NULL); if (ret < 0) goto err_free_dai;
diff --git a/sound/soc/samsung/pcm.c b/sound/soc/samsung/pcm.c index 498f563a4c9c..490c1a87fd66 100644 --- a/sound/soc/samsung/pcm.c +++ b/sound/soc/samsung/pcm.c @@ -576,7 +576,8 @@ static int s3c_pcm_dev_probe(struct platform_device *pdev) goto err5; }
- ret = samsung_asoc_dma_platform_register(&pdev->dev, filter); + ret = samsung_asoc_dma_platform_register(&pdev->dev, filter, + NULL, NULL); if (ret) { dev_err(&pdev->dev, "failed to get register DMA: %d\n", ret); goto err5; diff --git a/sound/soc/samsung/s3c2412-i2s.c b/sound/soc/samsung/s3c2412-i2s.c index 204029d12f5b..d45dffb297d8 100644 --- a/sound/soc/samsung/s3c2412-i2s.c +++ b/sound/soc/samsung/s3c2412-i2s.c @@ -177,7 +177,8 @@ static int s3c2412_iis_dev_probe(struct platform_device *pdev) }
ret = samsung_asoc_dma_platform_register(&pdev->dev, - pdata->dma_filter); + pdata->dma_filter, + NULL, NULL); if (ret) pr_err("failed to register the DMA: %d\n", ret);
diff --git a/sound/soc/samsung/s3c24xx-i2s.c b/sound/soc/samsung/s3c24xx-i2s.c index b3a475d73ba7..3e76f2a75a24 100644 --- a/sound/soc/samsung/s3c24xx-i2s.c +++ b/sound/soc/samsung/s3c24xx-i2s.c @@ -482,7 +482,8 @@ static int s3c24xx_iis_dev_probe(struct platform_device *pdev) }
ret = samsung_asoc_dma_platform_register(&pdev->dev, - pdata->dma_filter); + pdata->dma_filter, + NULL, NULL); if (ret) pr_err("failed to register the dma: %d\n", ret);
diff --git a/sound/soc/samsung/spdif.c b/sound/soc/samsung/spdif.c index 4687f521197c..0cb9c8567546 100644 --- a/sound/soc/samsung/spdif.c +++ b/sound/soc/samsung/spdif.c @@ -435,7 +435,8 @@ static int spdif_probe(struct platform_device *pdev)
spdif->dma_playback = &spdif_stereo_out;
- ret = samsung_asoc_dma_platform_register(&pdev->dev, filter); + ret = samsung_asoc_dma_platform_register(&pdev->dev, filter, + NULL, NULL); if (ret) { dev_err(&pdev->dev, "failed to register DMA: %d\n", ret); goto err4;