ASoC: ti: Add udma-pcm platform driver for UDMA (2619e037) · Commits · 戴 / test

sound/soc/ti/Kconfig

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		@@ -10,6 +10,10 @@ config SND_SOC_TI_SDMA_PCM
		tristate
		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:"
		config SND_SOC_DAVINCI_ASP
		tristate "daVinci Audio Serial Port (ASP) or McBSP support"

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		@@ -3,9 +3,11 @@
		# Platform drivers
		snd-soc-ti-edma-objs := edma-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_SDMA_PCM) += snd-soc-ti-sdma.o
		obj-$(CONFIG_SND_SOC_TI_UDMA_PCM) += snd-soc-ti-udma.o

		# CPU DAI drivers
		snd-soc-davinci-asp-objs := davinci-i2s.o

0 → 100644

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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");

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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__ */