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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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f2055e145f
Create new directory to contain all Texas Instruments specific DAI,
platform and machine drivers instead of scattering them under davinci and
omap directories.
There is already inter dependency between the two directories becasue of
McASP (on dra7x it is serviced by sDMA, not EDMA).
With the upcoming AM654 we will need to introduce new platform driver for
UDMA and it does not fit under davinci, nor under omap.
With the move I have restructured the Kconfig to be more usable in the era
of simple-sound-card:
CPU DAIs can be selected individually and they will select the platform
driver they can be served with.
To avoid breakage, I have moved over deprecated Kconfig options so
defconfig builds will work without regression.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
For sound/soc/{omap => ti}:
Tested-by: Jarkko Nikula <jarkko.nikula@bitmer.com>
Acked-by: Jarkko Nikula <jarkko.nikula@bitmer.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
60 lines
1.8 KiB
C
60 lines
1.8 KiB
C
/*
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* edma-pcm.c - eDMA PCM driver using dmaengine for AM3xxx, AM4xxx
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*
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* Copyright (C) 2014 Texas Instruments, Inc.
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*
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* Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
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*
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* Based on: sound/soc/tegra/tegra_pcm.c
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*/
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#include <linux/module.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/dmaengine_pcm.h>
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#include <linux/edma.h>
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#include "edma-pcm.h"
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static const struct snd_pcm_hardware edma_pcm_hardware = {
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.info = SNDRV_PCM_INFO_MMAP |
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SNDRV_PCM_INFO_MMAP_VALID |
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SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME |
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SNDRV_PCM_INFO_NO_PERIOD_WAKEUP |
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SNDRV_PCM_INFO_INTERLEAVED,
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.buffer_bytes_max = 128 * 1024,
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.period_bytes_min = 32,
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.period_bytes_max = 64 * 1024,
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.periods_min = 2,
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.periods_max = 19, /* Limit by edma dmaengine driver */
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};
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static const struct snd_dmaengine_pcm_config edma_dmaengine_pcm_config = {
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.pcm_hardware = &edma_pcm_hardware,
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.prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config,
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.compat_filter_fn = edma_filter_fn,
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.prealloc_buffer_size = 128 * 1024,
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};
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int edma_pcm_platform_register(struct device *dev)
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{
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return devm_snd_dmaengine_pcm_register(dev, &edma_dmaengine_pcm_config,
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SND_DMAENGINE_PCM_FLAG_COMPAT);
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}
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EXPORT_SYMBOL_GPL(edma_pcm_platform_register);
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MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
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MODULE_DESCRIPTION("eDMA PCM ASoC platform driver");
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MODULE_LICENSE("GPL");
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