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149 lines
3.7 KiB
149 lines
3.7 KiB
// SPDX-License-Identifier: GPL-2.0 |
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// |
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// Copyright (c) 2019 BayLibre, SAS. |
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// Author: Jerome Brunet <[email protected]> |
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#include <linux/module.h> |
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#include <sound/pcm_params.h> |
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#include <sound/soc.h> |
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#include <sound/soc-dai.h> |
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#include "meson-codec-glue.h" |
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static struct snd_soc_dapm_widget * |
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meson_codec_glue_get_input(struct snd_soc_dapm_widget *w) |
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{ |
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struct snd_soc_dapm_path *p = NULL; |
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struct snd_soc_dapm_widget *in; |
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snd_soc_dapm_widget_for_each_source_path(w, p) { |
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if (!p->connect) |
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continue; |
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/* Check that we still are in the same component */ |
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if (snd_soc_dapm_to_component(w->dapm) != |
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snd_soc_dapm_to_component(p->source->dapm)) |
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continue; |
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if (p->source->id == snd_soc_dapm_dai_in) |
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return p->source; |
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in = meson_codec_glue_get_input(p->source); |
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if (in) |
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return in; |
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} |
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return NULL; |
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} |
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static void meson_codec_glue_input_set_data(struct snd_soc_dai *dai, |
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struct meson_codec_glue_input *data) |
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{ |
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dai->playback_dma_data = data; |
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} |
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struct meson_codec_glue_input * |
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meson_codec_glue_input_get_data(struct snd_soc_dai *dai) |
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{ |
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return dai->playback_dma_data; |
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} |
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EXPORT_SYMBOL_GPL(meson_codec_glue_input_get_data); |
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static struct meson_codec_glue_input * |
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meson_codec_glue_output_get_input_data(struct snd_soc_dapm_widget *w) |
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{ |
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struct snd_soc_dapm_widget *in = |
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meson_codec_glue_get_input(w); |
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struct snd_soc_dai *dai; |
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if (WARN_ON(!in)) |
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return NULL; |
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dai = in->priv; |
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return meson_codec_glue_input_get_data(dai); |
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} |
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int meson_codec_glue_input_hw_params(struct snd_pcm_substream *substream, |
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struct snd_pcm_hw_params *params, |
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struct snd_soc_dai *dai) |
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{ |
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struct meson_codec_glue_input *data = |
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meson_codec_glue_input_get_data(dai); |
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data->params.rates = snd_pcm_rate_to_rate_bit(params_rate(params)); |
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data->params.rate_min = params_rate(params); |
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data->params.rate_max = params_rate(params); |
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data->params.formats = 1ULL << (__force int) params_format(params); |
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data->params.channels_min = params_channels(params); |
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data->params.channels_max = params_channels(params); |
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data->params.sig_bits = dai->driver->playback.sig_bits; |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(meson_codec_glue_input_hw_params); |
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int meson_codec_glue_input_set_fmt(struct snd_soc_dai *dai, |
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unsigned int fmt) |
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{ |
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struct meson_codec_glue_input *data = |
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meson_codec_glue_input_get_data(dai); |
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/* Save the source stream format for the downstream link */ |
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data->fmt = fmt; |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(meson_codec_glue_input_set_fmt); |
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int meson_codec_glue_output_startup(struct snd_pcm_substream *substream, |
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struct snd_soc_dai *dai) |
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{ |
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struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); |
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struct meson_codec_glue_input *in_data = |
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meson_codec_glue_output_get_input_data(dai->capture_widget); |
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if (!in_data) |
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return -ENODEV; |
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if (WARN_ON(!rtd->dai_link->params)) { |
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dev_warn(dai->dev, "codec2codec link expected\n"); |
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return -EINVAL; |
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} |
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/* Replace link params with the input params */ |
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rtd->dai_link->params = &in_data->params; |
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if (!in_data->fmt) |
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return 0; |
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return snd_soc_runtime_set_dai_fmt(rtd, in_data->fmt); |
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} |
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EXPORT_SYMBOL_GPL(meson_codec_glue_output_startup); |
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int meson_codec_glue_input_dai_probe(struct snd_soc_dai *dai) |
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{ |
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struct meson_codec_glue_input *data; |
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data = kzalloc(sizeof(*data), GFP_KERNEL); |
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if (!data) |
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return -ENOMEM; |
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meson_codec_glue_input_set_data(dai, data); |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(meson_codec_glue_input_dai_probe); |
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int meson_codec_glue_input_dai_remove(struct snd_soc_dai *dai) |
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{ |
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struct meson_codec_glue_input *data = |
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meson_codec_glue_input_get_data(dai); |
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kfree(data); |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(meson_codec_glue_input_dai_remove); |
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MODULE_AUTHOR("Jerome Brunet <[email protected]>"); |
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MODULE_DESCRIPTION("Amlogic Codec Glue Helpers"); |
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MODULE_LICENSE("GPL v2"); |
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