7188b28f66
cppcheck complains about invalid NULL dereferences but there's indeed no need to initialize a loop variable. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com> Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com> Link: https://lore.kernel.org/r/20220520211719.607543-17-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
147 lines
3.7 KiB
C
147 lines
3.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
//
|
|
// Copyright (c) 2019 BayLibre, SAS.
|
|
// Author: Jerome Brunet <jbrunet@baylibre.com>
|
|
|
|
#include <linux/module.h>
|
|
#include <sound/pcm_params.h>
|
|
#include <sound/soc.h>
|
|
#include <sound/soc-dai.h>
|
|
|
|
#include "meson-codec-glue.h"
|
|
|
|
static struct snd_soc_dapm_widget *
|
|
meson_codec_glue_get_input(struct snd_soc_dapm_widget *w)
|
|
{
|
|
struct snd_soc_dapm_path *p;
|
|
struct snd_soc_dapm_widget *in;
|
|
|
|
snd_soc_dapm_widget_for_each_source_path(w, p) {
|
|
if (!p->connect)
|
|
continue;
|
|
|
|
/* Check that we still are in the same component */
|
|
if (snd_soc_dapm_to_component(w->dapm) !=
|
|
snd_soc_dapm_to_component(p->source->dapm))
|
|
continue;
|
|
|
|
if (p->source->id == snd_soc_dapm_dai_in)
|
|
return p->source;
|
|
|
|
in = meson_codec_glue_get_input(p->source);
|
|
if (in)
|
|
return in;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void meson_codec_glue_input_set_data(struct snd_soc_dai *dai,
|
|
struct meson_codec_glue_input *data)
|
|
{
|
|
dai->playback_dma_data = data;
|
|
}
|
|
|
|
struct meson_codec_glue_input *
|
|
meson_codec_glue_input_get_data(struct snd_soc_dai *dai)
|
|
{
|
|
return dai->playback_dma_data;
|
|
}
|
|
EXPORT_SYMBOL_GPL(meson_codec_glue_input_get_data);
|
|
|
|
static struct meson_codec_glue_input *
|
|
meson_codec_glue_output_get_input_data(struct snd_soc_dapm_widget *w)
|
|
{
|
|
struct snd_soc_dapm_widget *in =
|
|
meson_codec_glue_get_input(w);
|
|
struct snd_soc_dai *dai;
|
|
|
|
if (WARN_ON(!in))
|
|
return NULL;
|
|
|
|
dai = in->priv;
|
|
|
|
return meson_codec_glue_input_get_data(dai);
|
|
}
|
|
|
|
int meson_codec_glue_input_hw_params(struct snd_pcm_substream *substream,
|
|
struct snd_pcm_hw_params *params,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct meson_codec_glue_input *data =
|
|
meson_codec_glue_input_get_data(dai);
|
|
|
|
data->params.rates = snd_pcm_rate_to_rate_bit(params_rate(params));
|
|
data->params.rate_min = params_rate(params);
|
|
data->params.rate_max = params_rate(params);
|
|
data->params.formats = 1ULL << (__force int) params_format(params);
|
|
data->params.channels_min = params_channels(params);
|
|
data->params.channels_max = params_channels(params);
|
|
data->params.sig_bits = dai->driver->playback.sig_bits;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(meson_codec_glue_input_hw_params);
|
|
|
|
int meson_codec_glue_input_set_fmt(struct snd_soc_dai *dai,
|
|
unsigned int fmt)
|
|
{
|
|
struct meson_codec_glue_input *data =
|
|
meson_codec_glue_input_get_data(dai);
|
|
|
|
/* Save the source stream format for the downstream link */
|
|
data->fmt = fmt;
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(meson_codec_glue_input_set_fmt);
|
|
|
|
int meson_codec_glue_output_startup(struct snd_pcm_substream *substream,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
|
|
struct meson_codec_glue_input *in_data =
|
|
meson_codec_glue_output_get_input_data(dai->capture_widget);
|
|
|
|
if (!in_data)
|
|
return -ENODEV;
|
|
|
|
if (WARN_ON(!rtd->dai_link->params)) {
|
|
dev_warn(dai->dev, "codec2codec link expected\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Replace link params with the input params */
|
|
rtd->dai_link->params = &in_data->params;
|
|
|
|
return snd_soc_runtime_set_dai_fmt(rtd, in_data->fmt);
|
|
}
|
|
EXPORT_SYMBOL_GPL(meson_codec_glue_output_startup);
|
|
|
|
int meson_codec_glue_input_dai_probe(struct snd_soc_dai *dai)
|
|
{
|
|
struct meson_codec_glue_input *data;
|
|
|
|
data = kzalloc(sizeof(*data), GFP_KERNEL);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
|
|
meson_codec_glue_input_set_data(dai, data);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(meson_codec_glue_input_dai_probe);
|
|
|
|
int meson_codec_glue_input_dai_remove(struct snd_soc_dai *dai)
|
|
{
|
|
struct meson_codec_glue_input *data =
|
|
meson_codec_glue_input_get_data(dai);
|
|
|
|
kfree(data);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(meson_codec_glue_input_dai_remove);
|
|
|
|
MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
|
|
MODULE_DESCRIPTION("Amlogic Codec Glue Helpers");
|
|
MODULE_LICENSE("GPL v2");
|
|
|