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Diffstat (limited to 'sound/soc/codecs/cs42l43-sdw.c')
-rw-r--r--sound/soc/codecs/cs42l43-sdw.c74
1 files changed, 74 insertions, 0 deletions
diff --git a/sound/soc/codecs/cs42l43-sdw.c b/sound/soc/codecs/cs42l43-sdw.c
new file mode 100644
index 000000000000..55ac5fe8c3db
--- /dev/null
+++ b/sound/soc/codecs/cs42l43-sdw.c
@@ -0,0 +1,74 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// CS42L43 CODEC driver SoundWire handling
+//
+// Copyright (C) 2022-2023 Cirrus Logic, Inc. and
+// Cirrus Logic International Semiconductor Ltd.
+
+#include <linux/errno.h>
+#include <linux/mfd/cs42l43.h>
+#include <linux/mfd/cs42l43-regs.h>
+#include <linux/module.h>
+#include <sound/pcm.h>
+#include <sound/sdw.h>
+#include <sound/soc-component.h>
+#include <sound/soc-dai.h>
+#include <sound/soc.h>
+
+#include "cs42l43.h"
+
+int cs42l43_sdw_add_peripheral(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
+{
+ struct cs42l43_codec *priv = snd_soc_component_get_drvdata(dai->component);
+ struct sdw_stream_runtime *sdw_stream = snd_soc_dai_get_dma_data(dai, substream);
+ struct sdw_slave *sdw = dev_to_sdw_dev(priv->dev->parent);
+ struct sdw_stream_config sconfig = {0};
+ struct sdw_port_config pconfig = {0};
+ int ret;
+
+ if (!sdw_stream)
+ return -EINVAL;
+
+ snd_sdw_params_to_config(substream, params, &sconfig, &pconfig);
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ pconfig.num = dai->id;
+ else
+ pconfig.num = dai->id;
+
+ ret = sdw_stream_add_slave(sdw, &sconfig, &pconfig, 1, sdw_stream);
+ if (ret) {
+ dev_err(priv->dev, "Failed to add sdw stream: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_NS_GPL(cs42l43_sdw_add_peripheral, SND_SOC_CS42L43);
+
+int cs42l43_sdw_remove_peripheral(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct cs42l43_codec *priv = snd_soc_component_get_drvdata(dai->component);
+ struct sdw_stream_runtime *sdw_stream = snd_soc_dai_get_dma_data(dai, substream);
+ struct sdw_slave *sdw = dev_to_sdw_dev(priv->dev->parent);
+
+ if (!sdw_stream)
+ return -EINVAL;
+
+ return sdw_stream_remove_slave(sdw, sdw_stream);
+}
+EXPORT_SYMBOL_NS_GPL(cs42l43_sdw_remove_peripheral, SND_SOC_CS42L43);
+
+int cs42l43_sdw_set_stream(struct snd_soc_dai *dai, void *sdw_stream, int direction)
+{
+ snd_soc_dai_dma_data_set(dai, direction, sdw_stream);
+
+ return 0;
+}
+EXPORT_SYMBOL_NS_GPL(cs42l43_sdw_set_stream, SND_SOC_CS42L43);
+
+MODULE_DESCRIPTION("CS42L43 CODEC SoundWire Driver");
+MODULE_AUTHOR("Charles Keepax <ckeepax@opensource.cirrus.com>");
+MODULE_LICENSE("GPL");