Unverified Commit 2619e037 authored by Peter Ujfalusi's avatar Peter Ujfalusi Committed by Mark Brown
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ASoC: ti: Add udma-pcm platform driver for UDMA 



Platform driver glue for platforms using UDMA (am654 and j721e).

Signed-off-by: default avatarPeter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20200210140950.11090-2-peter.ujfalusi@ti.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent ea00d952

sound/soc/ti/Kconfig

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@@ -10,6 +10,10 @@ config SND_SOC_TI_SDMA_PCM 
	tristate

	tristate

	select SND_SOC_GENERIC_DMAENGINE_PCM

	select SND_SOC_GENERIC_DMAENGINE_PCM





config SND_SOC_TI_UDMA_PCM

	tristate

	select SND_SOC_GENERIC_DMAENGINE_PCM



comment "Texas Instruments DAI support for:"

comment "Texas Instruments DAI support for:"

config SND_SOC_DAVINCI_ASP

config SND_SOC_DAVINCI_ASP

	tristate "daVinci Audio Serial Port (ASP) or McBSP support"

	tristate "daVinci Audio Serial Port (ASP) or McBSP support"

sound/soc/ti/Makefile

+2 −0
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@@ -3,9 +3,11 @@ 
# Platform drivers

# Platform drivers

snd-soc-ti-edma-objs := edma-pcm.o

snd-soc-ti-edma-objs := edma-pcm.o

snd-soc-ti-sdma-objs := sdma-pcm.o

snd-soc-ti-sdma-objs := sdma-pcm.o

snd-soc-ti-udma-objs := udma-pcm.o





obj-$(CONFIG_SND_SOC_TI_EDMA_PCM) += snd-soc-ti-edma.o

obj-$(CONFIG_SND_SOC_TI_EDMA_PCM) += snd-soc-ti-edma.o

obj-$(CONFIG_SND_SOC_TI_SDMA_PCM) += snd-soc-ti-sdma.o

obj-$(CONFIG_SND_SOC_TI_SDMA_PCM) += snd-soc-ti-sdma.o

obj-$(CONFIG_SND_SOC_TI_UDMA_PCM) += snd-soc-ti-udma.o





# CPU DAI drivers

# CPU DAI drivers

snd-soc-davinci-asp-objs := davinci-i2s.o

snd-soc-davinci-asp-objs := davinci-i2s.o

sound/soc/ti/udma-pcm.c

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// SPDX-License-Identifier: GPL-2.0

/*

 *  Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com

 *  Author: Peter Ujfalusi <peter.ujfalusi@ti.com>

 */



#include <linux/module.h>

#include <sound/core.h>

#include <sound/pcm.h>

#include <sound/pcm_params.h>

#include <sound/soc.h>

#include <sound/dmaengine_pcm.h>



#include "udma-pcm.h"



static const struct snd_pcm_hardware udma_pcm_hardware = {

	.info			= SNDRV_PCM_INFO_MMAP |

				  SNDRV_PCM_INFO_MMAP_VALID |

				  SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME |

				  SNDRV_PCM_INFO_NO_PERIOD_WAKEUP |

				  SNDRV_PCM_INFO_INTERLEAVED,

	.buffer_bytes_max	= SIZE_MAX,

	.period_bytes_min	= 32,

	.period_bytes_max	= SZ_64K,

	.periods_min		= 2,

	.periods_max		= UINT_MAX,

};



static const struct snd_dmaengine_pcm_config udma_dmaengine_pcm_config = {

	.pcm_hardware = &udma_pcm_hardware,

	.prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config,

};



int udma_pcm_platform_register(struct device *dev)

{

	return devm_snd_dmaengine_pcm_register(dev, &udma_dmaengine_pcm_config,

					       0);

}

EXPORT_SYMBOL_GPL(udma_pcm_platform_register);



MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");

MODULE_DESCRIPTION("UDMA PCM ASoC platform driver");

MODULE_LICENSE("GPL v2");

sound/soc/ti/udma-pcm.h

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/* SPDX-License-Identifier: GPL-2.0 */

/*

 *  Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com

 */



#ifndef __UDMA_PCM_H__

#define __UDMA_PCM_H__



#if IS_ENABLED(CONFIG_SND_SOC_TI_UDMA_PCM)

int udma_pcm_platform_register(struct device *dev);

#else

static inline int udma_pcm_platform_register(struct device *dev)

{

	return 0;

}

#endif /* CONFIG_SND_SOC_TI_UDMA_PCM */



#endif /* __UDMA_PCM_H__ */