0eef5381b7
Setting a field in a static struct to NULL has no effect so don't bother (and don't generate false positives for grep). Signed-off-by: Mark Brown <broonie@linaro.org> Acked-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Stephen Warren <swarren@nvidia.com>
79 lines
2.3 KiB
C
79 lines
2.3 KiB
C
/*
|
|
* tegra_pcm.c - Tegra PCM driver
|
|
*
|
|
* Author: Stephen Warren <swarren@nvidia.com>
|
|
* Copyright (C) 2010,2012 - NVIDIA, Inc.
|
|
*
|
|
* Based on code copyright/by:
|
|
*
|
|
* Copyright (c) 2009-2010, NVIDIA Corporation.
|
|
* Scott Peterson <speterson@nvidia.com>
|
|
* Vijay Mali <vmali@nvidia.com>
|
|
*
|
|
* Copyright (C) 2010 Google, Inc.
|
|
* Iliyan Malchev <malchev@google.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* version 2 as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that 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, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
|
|
* 02110-1301 USA
|
|
*
|
|
*/
|
|
|
|
#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 "tegra_pcm.h"
|
|
|
|
static const struct snd_pcm_hardware tegra_pcm_hardware = {
|
|
.info = SNDRV_PCM_INFO_MMAP |
|
|
SNDRV_PCM_INFO_MMAP_VALID |
|
|
SNDRV_PCM_INFO_INTERLEAVED,
|
|
.formats = SNDRV_PCM_FMTBIT_S16_LE,
|
|
.channels_min = 2,
|
|
.channels_max = 2,
|
|
.period_bytes_min = 1024,
|
|
.period_bytes_max = PAGE_SIZE,
|
|
.periods_min = 2,
|
|
.periods_max = 8,
|
|
.buffer_bytes_max = PAGE_SIZE * 8,
|
|
.fifo_size = 4,
|
|
};
|
|
|
|
static const struct snd_dmaengine_pcm_config tegra_dmaengine_pcm_config = {
|
|
.pcm_hardware = &tegra_pcm_hardware,
|
|
.prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config,
|
|
.prealloc_buffer_size = PAGE_SIZE * 8,
|
|
};
|
|
|
|
int tegra_pcm_platform_register(struct device *dev)
|
|
{
|
|
return snd_dmaengine_pcm_register(dev, &tegra_dmaengine_pcm_config,
|
|
SND_DMAENGINE_PCM_FLAG_NO_DT |
|
|
SND_DMAENGINE_PCM_FLAG_COMPAT);
|
|
}
|
|
EXPORT_SYMBOL_GPL(tegra_pcm_platform_register);
|
|
|
|
void tegra_pcm_platform_unregister(struct device *dev)
|
|
{
|
|
return snd_dmaengine_pcm_unregister(dev);
|
|
}
|
|
EXPORT_SYMBOL_GPL(tegra_pcm_platform_unregister);
|
|
|
|
MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
|
|
MODULE_DESCRIPTION("Tegra PCM ASoC driver");
|
|
MODULE_LICENSE("GPL");
|