| 1 | // SPDX-License-Identifier: GPL-2.0 |
|---|
| 2 | // |
|---|
| 3 | // CS42L43 CODEC driver SoundWire handling |
|---|
| 4 | // |
|---|
| 5 | // Copyright (C) 2022-2023 Cirrus Logic, Inc. and |
|---|
| 6 | // Cirrus Logic International Semiconductor Ltd. |
|---|
| 7 | |
|---|
| 8 | #include <linux/errno.h> |
|---|
| 9 | #include <linux/mfd/cs42l43.h> |
|---|
| 10 | #include <linux/mfd/cs42l43-regs.h> |
|---|
| 11 | #include <linux/module.h> |
|---|
| 12 | #include <linux/soundwire/sdw.h> |
|---|
| 13 | #include <sound/pcm.h> |
|---|
| 14 | #include <sound/sdw.h> |
|---|
| 15 | #include <sound/soc-component.h> |
|---|
| 16 | #include <sound/soc-dai.h> |
|---|
| 17 | #include <sound/soc.h> |
|---|
| 18 | |
|---|
| 19 | #include "cs42l43.h" |
|---|
| 20 | |
|---|
| 21 | int cs42l43_sdw_add_peripheral(struct snd_pcm_substream *substream, |
|---|
| 22 | struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) |
|---|
| 23 | { |
|---|
| 24 | struct cs42l43_codec *priv = snd_soc_component_get_drvdata(c: dai->component); |
|---|
| 25 | struct sdw_stream_runtime *sdw_stream = snd_soc_dai_get_dma_data(dai, substream); |
|---|
| 26 | struct sdw_slave *sdw = dev_to_sdw_dev(priv->dev->parent); |
|---|
| 27 | struct sdw_stream_config sconfig = {0}; |
|---|
| 28 | struct sdw_port_config pconfig = {0}; |
|---|
| 29 | int ret; |
|---|
| 30 | |
|---|
| 31 | if (!sdw_stream) |
|---|
| 32 | return -EINVAL; |
|---|
| 33 | |
|---|
| 34 | snd_sdw_params_to_config(substream, params, stream_config: &sconfig, port_config: &pconfig); |
|---|
| 35 | pconfig.num = dai->id; |
|---|
| 36 | |
|---|
| 37 | ret = sdw_stream_add_slave(slave: sdw, stream_config: &sconfig, port_config: &pconfig, num_ports: 1, stream: sdw_stream); |
|---|
| 38 | if (ret) { |
|---|
| 39 | dev_err(priv->dev, "Failed to add sdw stream: %d\n" , ret); |
|---|
| 40 | return ret; |
|---|
| 41 | } |
|---|
| 42 | |
|---|
| 43 | return 0; |
|---|
| 44 | } |
|---|
| 45 | EXPORT_SYMBOL_NS_GPL(cs42l43_sdw_add_peripheral, SND_SOC_CS42L43); |
|---|
| 46 | |
|---|
| 47 | int cs42l43_sdw_remove_peripheral(struct snd_pcm_substream *substream, |
|---|
| 48 | struct snd_soc_dai *dai) |
|---|
| 49 | { |
|---|
| 50 | struct cs42l43_codec *priv = snd_soc_component_get_drvdata(c: dai->component); |
|---|
| 51 | struct sdw_stream_runtime *sdw_stream = snd_soc_dai_get_dma_data(dai, substream); |
|---|
| 52 | struct sdw_slave *sdw = dev_to_sdw_dev(priv->dev->parent); |
|---|
| 53 | |
|---|
| 54 | if (!sdw_stream) |
|---|
| 55 | return -EINVAL; |
|---|
| 56 | |
|---|
| 57 | return sdw_stream_remove_slave(slave: sdw, stream: sdw_stream); |
|---|
| 58 | } |
|---|
| 59 | EXPORT_SYMBOL_NS_GPL(cs42l43_sdw_remove_peripheral, SND_SOC_CS42L43); |
|---|
| 60 | |
|---|
| 61 | int cs42l43_sdw_set_stream(struct snd_soc_dai *dai, void *sdw_stream, int direction) |
|---|
| 62 | { |
|---|
| 63 | snd_soc_dai_dma_data_set(dai, stream: direction, data: sdw_stream); |
|---|
| 64 | |
|---|
| 65 | return 0; |
|---|
| 66 | } |
|---|
| 67 | EXPORT_SYMBOL_NS_GPL(cs42l43_sdw_set_stream, SND_SOC_CS42L43); |
|---|
| 68 | |
|---|
| 69 | MODULE_DESCRIPTION("CS42L43 CODEC SoundWire Driver" ); |
|---|
| 70 | MODULE_AUTHOR("Charles Keepax <ckeepax@opensource.cirrus.com>" ); |
|---|
| 71 | MODULE_LICENSE("GPL" ); |
|---|
| 72 | |
|---|
