fc918cbe87
The CS42L43 is an audio CODEC with integrated MIPI SoundWire interface (Version 1.2.1 compliant), I2C, SPI, and I2S/TDM interfaces designed for portable applications. It provides a high dynamic range, stereo DAC for headphone output, two integrated Class D amplifiers for loudspeakers, and two ADCs for wired headset microphone input or stereo line input. PDM inputs are provided for digital microphones. The ASoC component provides the majority of the functionality of the device, all the audio functions. Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> Link: https://lore.kernel.org/r/20230804104602.395892-7-ckeepax@opensource.cirrus.com Signed-off-by: Mark Brown <broonie@kernel.org>
75 lines
2.2 KiB
C
75 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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//
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// CS42L43 CODEC driver SoundWire handling
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//
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// Copyright (C) 2022-2023 Cirrus Logic, Inc. and
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// Cirrus Logic International Semiconductor Ltd.
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#include <linux/errno.h>
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#include <linux/mfd/cs42l43.h>
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#include <linux/mfd/cs42l43-regs.h>
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#include <linux/module.h>
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#include <sound/pcm.h>
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#include <sound/sdw.h>
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#include <sound/soc-component.h>
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#include <sound/soc-dai.h>
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#include <sound/soc.h>
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#include "cs42l43.h"
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int cs42l43_sdw_add_peripheral(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
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{
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struct cs42l43_codec *priv = snd_soc_component_get_drvdata(dai->component);
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struct sdw_stream_runtime *sdw_stream = snd_soc_dai_get_dma_data(dai, substream);
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struct sdw_slave *sdw = dev_to_sdw_dev(priv->dev->parent);
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struct sdw_stream_config sconfig = {0};
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struct sdw_port_config pconfig = {0};
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int ret;
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if (!sdw_stream)
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return -EINVAL;
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snd_sdw_params_to_config(substream, params, &sconfig, &pconfig);
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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pconfig.num = dai->id;
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else
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pconfig.num = dai->id;
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ret = sdw_stream_add_slave(sdw, &sconfig, &pconfig, 1, sdw_stream);
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if (ret) {
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dev_err(priv->dev, "Failed to add sdw stream: %d\n", ret);
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return ret;
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}
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return 0;
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}
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EXPORT_SYMBOL_NS_GPL(cs42l43_sdw_add_peripheral, SND_SOC_CS42L43);
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int cs42l43_sdw_remove_peripheral(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct cs42l43_codec *priv = snd_soc_component_get_drvdata(dai->component);
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struct sdw_stream_runtime *sdw_stream = snd_soc_dai_get_dma_data(dai, substream);
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struct sdw_slave *sdw = dev_to_sdw_dev(priv->dev->parent);
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if (!sdw_stream)
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return -EINVAL;
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return sdw_stream_remove_slave(sdw, sdw_stream);
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}
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EXPORT_SYMBOL_NS_GPL(cs42l43_sdw_remove_peripheral, SND_SOC_CS42L43);
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int cs42l43_sdw_set_stream(struct snd_soc_dai *dai, void *sdw_stream, int direction)
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{
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snd_soc_dai_dma_data_set(dai, direction, sdw_stream);
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return 0;
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}
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EXPORT_SYMBOL_NS_GPL(cs42l43_sdw_set_stream, SND_SOC_CS42L43);
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MODULE_DESCRIPTION("CS42L43 CODEC SoundWire Driver");
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MODULE_AUTHOR("Charles Keepax <ckeepax@opensource.cirrus.com>");
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MODULE_LICENSE("GPL");
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