[alsa-devel] [PATCH V2 1/2] ASoC: ep93xx: get rid of ep93xx-pcm-audio struct device
From: Stephen Warren swarren@nvidia.com
Modify the ep93xx PCM driver so that it's a utility library that can be registered on each DAI, rather than a separate struct device. This is more in line with how many recent DT-converted platforms operate, and avoids the need for yet another struct device.
Cc: H Hartley Sweeten hsweeten@visionengravers.com Cc: Ryan Mallon rmallon@gmail.com Signed-off-by: Stephen Warren swarren@nvidia.com --- v2: Rebased on a merge of topic/ep93xx and topic/dma --- sound/soc/cirrus/edb93xx.c | 2 +- sound/soc/cirrus/ep93xx-ac97.c | 8 ++++++++ sound/soc/cirrus/ep93xx-i2s.c | 8 ++++++++ sound/soc/cirrus/ep93xx-pcm.c | 19 +++++-------------- sound/soc/cirrus/ep93xx-pcm.h | 22 ++++++++++++++++++++++ sound/soc/cirrus/simone.c | 2 +- sound/soc/cirrus/snappercl15.c | 2 +- 7 files changed, 46 insertions(+), 17 deletions(-) create mode 100644 sound/soc/cirrus/ep93xx-pcm.h
diff --git a/sound/soc/cirrus/edb93xx.c b/sound/soc/cirrus/edb93xx.c index c43fb214558a..4f900efc437c 100644 --- a/sound/soc/cirrus/edb93xx.c +++ b/sound/soc/cirrus/edb93xx.c @@ -63,7 +63,7 @@ static struct snd_soc_ops edb93xx_ops = { static struct snd_soc_dai_link edb93xx_dai = { .name = "CS4271", .stream_name = "CS4271 HiFi", - .platform_name = "ep93xx-pcm-audio", + .platform_name = "ep93xx-i2s", .cpu_dai_name = "ep93xx-i2s", .codec_name = "spi0.0", .codec_dai_name = "cs4271-hifi", diff --git a/sound/soc/cirrus/ep93xx-ac97.c b/sound/soc/cirrus/ep93xx-ac97.c index efa75b5086a4..cc5583da5380 100644 --- a/sound/soc/cirrus/ep93xx-ac97.c +++ b/sound/soc/cirrus/ep93xx-ac97.c @@ -24,6 +24,8 @@
#include <linux/platform_data/dma-ep93xx.h>
+#include "ep93xx-pcm.h" + /* * Per channel (1-4) registers. */ @@ -394,8 +396,14 @@ static int ep93xx_ac97_probe(struct platform_device *pdev) if (ret) goto fail;
+ ret = devm_ep93xx_pcm_platform_register(&pdev->dev); + if (ret) + goto fail_unregister; + return 0;
+fail_unregister: + snd_soc_unregister_component(&pdev->dev); fail: ep93xx_ac97_info = NULL; snd_soc_set_ac97_ops(NULL); diff --git a/sound/soc/cirrus/ep93xx-i2s.c b/sound/soc/cirrus/ep93xx-i2s.c index a57643d6402f..167728a73da2 100644 --- a/sound/soc/cirrus/ep93xx-i2s.c +++ b/sound/soc/cirrus/ep93xx-i2s.c @@ -30,6 +30,8 @@ #include <mach/ep93xx-regs.h> #include <linux/platform_data/dma-ep93xx.h>
+#include "ep93xx-pcm.h" + #define EP93XX_I2S_TXCLKCFG 0x00 #define EP93XX_I2S_RXCLKCFG 0x04 #define EP93XX_I2S_GLCTRL 0x0C @@ -405,8 +407,14 @@ static int ep93xx_i2s_probe(struct platform_device *pdev) if (err) goto fail_put_lrclk;
+ err = devm_ep93xx_pcm_platform_register(&pdev->dev); + if (err) + goto fail_unregister; + return 0;
+fail_unregister: + snd_soc_unregister_component(&pdev->dev); fail_put_lrclk: clk_put(info->lrclk); fail_put_sclk: diff --git a/sound/soc/cirrus/ep93xx-pcm.c b/sound/soc/cirrus/ep93xx-pcm.c index fdb8b8feb4ed..198c5405f2ce 100644 --- a/sound/soc/cirrus/ep93xx-pcm.c +++ b/sound/soc/cirrus/ep93xx-pcm.c @@ -23,6 +23,8 @@
#include <linux/platform_data/dma-ep93xx.h>
+#include "ep93xx-pcm.h" + static const struct snd_pcm_hardware ep93xx_pcm_hardware = { .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID | @@ -76,27 +78,16 @@ static const struct snd_dmaengine_pcm_config ep93xx_dmaengine_pcm_config = { .prealloc_buffer_size = 131072, };
-static int ep93xx_soc_platform_probe(struct platform_device *pdev) +int devm_ep93xx_pcm_platform_register(struct device *dev) { - return devm_snd_dmaengine_pcm_register(&pdev->dev, + return devm_snd_dmaengine_pcm_register(dev, &ep93xx_dmaengine_pcm_config, SND_DMAENGINE_PCM_FLAG_NO_RESIDUE | SND_DMAENGINE_PCM_FLAG_NO_DT | SND_DMAENGINE_PCM_FLAG_COMPAT); } - -static struct platform_driver ep93xx_pcm_driver = { - .driver = { - .name = "ep93xx-pcm-audio", - .owner = THIS_MODULE, - }, - - .probe = ep93xx_soc_platform_probe, -}; - -module_platform_driver(ep93xx_pcm_driver); +EXPORT_SYMBOL_GPL(devm_ep93xx_pcm_platform_register);
MODULE_AUTHOR("Ryan Mallon"); MODULE_DESCRIPTION("EP93xx ALSA PCM interface"); MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:ep93xx-pcm-audio"); diff --git a/sound/soc/cirrus/ep93xx-pcm.h b/sound/soc/cirrus/ep93xx-pcm.h new file mode 100644 index 000000000000..b7a12a2fae9c --- /dev/null +++ b/sound/soc/cirrus/ep93xx-pcm.h @@ -0,0 +1,22 @@ +/* + * Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see http://www.gnu.org/licenses/. + */ + +#ifndef __EP93XX_PCM_H__ +#define __EP93XX_PCM_H__ + +int devm_ep93xx_pcm_platform_register(struct device *dev); + +#endif diff --git a/sound/soc/cirrus/simone.c b/sound/soc/cirrus/simone.c index 4d094d00c34a..822a19a89e74 100644 --- a/sound/soc/cirrus/simone.c +++ b/sound/soc/cirrus/simone.c @@ -27,7 +27,7 @@ static struct snd_soc_dai_link simone_dai = { .cpu_dai_name = "ep93xx-ac97", .codec_dai_name = "ac97-hifi", .codec_name = "ac97-codec", - .platform_name = "ep93xx-pcm-audio", + .platform_name = "ep93xx-ac97", };
static struct snd_soc_card snd_soc_simone = { diff --git a/sound/soc/cirrus/snappercl15.c b/sound/soc/cirrus/snappercl15.c index 69041074f2c1..29238a7476dd 100644 --- a/sound/soc/cirrus/snappercl15.c +++ b/sound/soc/cirrus/snappercl15.c @@ -83,7 +83,7 @@ static struct snd_soc_dai_link snappercl15_dai = { .cpu_dai_name = "ep93xx-i2s", .codec_dai_name = "tlv320aic23-hifi", .codec_name = "tlv320aic23-codec.0-001a", - .platform_name = "ep93xx-pcm-audio", + .platform_name = "ep93xx-i2s", .init = snappercl15_tlv320aic23_init, .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_IF | SND_SOC_DAIFMT_CBS_CFS,
From: Stephen Warren swarren@nvidia.com
ep93xx_compat_request_channel() is almost identical to dmaengine_pcm_compat_request_channel(), with the exception that the latter:
a) Assumes that the DAI DMA data is a struct snd_dmaengine_dai_dma_data pointer rather than some custom type.
b) dma_data->filter_data rather than dma_data should be passed to snd_dmaengine_pcm_request_channel() as the filter data.
Make minor changes to the ep93xx DAI drivers so that those two conditions are met. This allows removal of the custom .compat_request_channel().
Cc: H Hartley Sweeten hsweeten@visionengravers.com Cc: Ryan Mallon rmallon@gmail.com Signed-off-by: Stephen Warren swarren@nvidia.com --- v2: Rebased on a merge of topic/ep93xx and topic/dma --- sound/soc/cirrus/ep93xx-ac97.c | 12 ++++++++++-- sound/soc/cirrus/ep93xx-i2s.c | 14 ++++++++++++-- sound/soc/cirrus/ep93xx-pcm.c | 13 ------------- 3 files changed, 22 insertions(+), 17 deletions(-)
diff --git a/sound/soc/cirrus/ep93xx-ac97.c b/sound/soc/cirrus/ep93xx-ac97.c index cc5583da5380..f30dadf85b99 100644 --- a/sound/soc/cirrus/ep93xx-ac97.c +++ b/sound/soc/cirrus/ep93xx-ac97.c @@ -19,6 +19,7 @@ #include <linux/slab.h>
#include <sound/core.h> +#include <sound/dmaengine_pcm.h> #include <sound/ac97_codec.h> #include <sound/soc.h>
@@ -97,6 +98,8 @@ struct ep93xx_ac97_info { struct device *dev; void __iomem *regs; struct completion done; + struct snd_dmaengine_dai_dma_data dma_params_rx; + struct snd_dmaengine_dai_dma_data dma_params_tx; };
/* currently ALSA only supports a single AC97 device */ @@ -317,8 +320,13 @@ static int ep93xx_ac97_trigger(struct snd_pcm_substream *substream,
static int ep93xx_ac97_dai_probe(struct snd_soc_dai *dai) { - dai->playback_dma_data = &ep93xx_ac97_pcm_out; - dai->capture_dma_data = &ep93xx_ac97_pcm_in; + struct ep93xx_ac97_info *info = snd_soc_dai_get_drvdata(dai); + + info->dma_params_tx.filter_data = &ep93xx_ac97_pcm_out; + info->dma_params_rx.filter_data = &ep93xx_ac97_pcm_in; + + dai->playback_dma_data = &info->dma_params_tx; + dai->capture_dma_data = &info->dma_params_rx;
return 0; } diff --git a/sound/soc/cirrus/ep93xx-i2s.c b/sound/soc/cirrus/ep93xx-i2s.c index 167728a73da2..943145f9d1b6 100644 --- a/sound/soc/cirrus/ep93xx-i2s.c +++ b/sound/soc/cirrus/ep93xx-i2s.c @@ -21,6 +21,7 @@ #include <linux/io.h>
#include <sound/core.h> +#include <sound/dmaengine_pcm.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/initval.h> @@ -63,6 +64,8 @@ struct ep93xx_i2s_info { struct clk *sclk; struct clk *lrclk; void __iomem *regs; + struct snd_dmaengine_dai_dma_data dma_params_rx; + struct snd_dmaengine_dai_dma_data dma_params_tx; };
static struct ep93xx_dma_data ep93xx_i2s_dma_data[] = { @@ -142,8 +145,15 @@ static void ep93xx_i2s_disable(struct ep93xx_i2s_info *info, int stream)
static int ep93xx_i2s_dai_probe(struct snd_soc_dai *dai) { - dai->playback_dma_data = &ep93xx_i2s_dma_data[SNDRV_PCM_STREAM_PLAYBACK]; - dai->capture_dma_data = &ep93xx_i2s_dma_data[SNDRV_PCM_STREAM_CAPTURE]; + struct ep93xx_i2s_info *info = snd_soc_dai_get_drvdata(dai); + + info->dma_params_tx.filter_data = + &ep93xx_i2s_dma_data[SNDRV_PCM_STREAM_PLAYBACK]; + info->dma_params_rx.filter_data = + &ep93xx_i2s_dma_data[SNDRV_PCM_STREAM_CAPTURE]; + + dai->playback_dma_data = &info->dma_params_tx; + dai->capture_dma_data = &info->dma_params_rx;
return 0; } diff --git a/sound/soc/cirrus/ep93xx-pcm.c b/sound/soc/cirrus/ep93xx-pcm.c index 198c5405f2ce..ca6698d75736 100644 --- a/sound/soc/cirrus/ep93xx-pcm.c +++ b/sound/soc/cirrus/ep93xx-pcm.c @@ -59,22 +59,9 @@ static bool ep93xx_pcm_dma_filter(struct dma_chan *chan, void *filter_param) return false; }
-static struct dma_chan *ep93xx_compat_request_channel( - struct snd_soc_pcm_runtime *rtd, - struct snd_pcm_substream *substream) -{ - struct snd_dmaengine_dai_dma_data *dma_data; - - dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream); - - return snd_dmaengine_pcm_request_channel(ep93xx_pcm_dma_filter, - dma_data); -} - static const struct snd_dmaengine_pcm_config ep93xx_dmaengine_pcm_config = { .pcm_hardware = &ep93xx_pcm_hardware, .compat_filter_fn = ep93xx_pcm_dma_filter, - .compat_request_channel = ep93xx_compat_request_channel, .prealloc_buffer_size = 131072, };
On Tue, Dec 10, 2013 at 12:34:45PM -0700, Stephen Warren wrote:
From: Stephen Warren swarren@nvidia.com
Modify the ep93xx PCM driver so that it's a utility library that can be registered on each DAI, rather than a separate struct device. This is more in line with how many recent DT-converted platforms operate, and avoids the need for yet another struct device.
Applied both, thanks.
participants (2)
-
Mark Brown -
Stephen Warren