[PATCH V2 3/8] soundwire: amd: register soundwire manager dai ops

Vijendar Mukunda
2023-02-13T09:40:04Z

Register dai ops for soundwire manager instances.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
---
drivers/soundwire/amd_manager.c | 182 ++++++++++++++++++++++++++++++
drivers/soundwire/amd_manager.h | 18 +++
include/linux/soundwire/sdw_amd.h | 18 +++
3 files changed, 218 insertions(+)

diff --git a/drivers/soundwire/amd_manager.c b/drivers/soundwire/amd_manager.c
index cd1e5a3d5995..14c88b80ab6d 100644
--- a/drivers/soundwire/amd_manager.c
+++ b/drivers/soundwire/amd_manager.c
@@ -641,6 +641,182 @@ static const struct sdw_master_ops amd_sdw_ops = {
.read_ping_status = amd_sdw_read_ping_status,
};

+static int amd_sdw_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct amd_sdw_manager *amd_manager = snd_soc_dai_get_drvdata(dai);
+ struct sdw_amd_dai_runtime *dai_runtime;
+ struct sdw_stream_config sconfig;
+ struct sdw_port_config *pconfig;
+ int ch, dir;
+ int ret;
+
+ dai_runtime = amd_manager->dai_runtime_array[dai->id];
+ if (!dai_runtime)
+ return -EIO;
+
+ ch = params_channels(params);
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+ dir = SDW_DATA_DIR_RX;
+ else
+ dir = SDW_DATA_DIR_TX;
+ dev_dbg(amd_manager->dev, "%s: dir:%d dai->id:0x%x\n", __func__, dir, dai->id);
+
+ sconfig.direction = dir;
+ sconfig.ch_count = ch;
+ sconfig.frame_rate = params_rate(params);
+ sconfig.type = dai_runtime->stream_type;
+
+ sconfig.bps = snd_pcm_format_width(params_format(params));
+
+ /* Port configuration */
+ pconfig = kzalloc(sizeof(*pconfig), GFP_KERNEL);
+ if (!pconfig) {
+ ret = -ENOMEM;
+ goto error;
+ }
+
+ pconfig->num = dai->id;
+ pconfig->ch_mask = (1 << ch) - 1;
+ ret = sdw_stream_add_master(&amd_manager->bus, &sconfig,
+ pconfig, 1, dai_runtime->stream);
+ if (ret)
+ dev_err(amd_manager->dev, "add manager to stream failed:%d\n", ret);
+
+ kfree(pconfig);
+error:
+ return ret;
+}
+
+static int amd_sdw_hw_free(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
+{
+ struct amd_sdw_manager *amd_manager = snd_soc_dai_get_drvdata(dai);
+ struct sdw_amd_dai_runtime *dai_runtime;
+ int ret;
+
+ dai_runtime = amd_manager->dai_runtime_array[dai->id];
+ if (!dai_runtime)
+ return -EIO;
+
+ ret = sdw_stream_remove_master(&amd_manager->bus, dai_runtime->stream);
+ if (ret < 0)
+ dev_err(dai->dev, "remove manager from stream %s failed: %d\n",
+ dai_runtime->stream->name, ret);
+ return ret;
+}
+
+static int amd_set_sdw_stream(struct snd_soc_dai *dai, void *stream, int direction)
+{
+ struct amd_sdw_manager *amd_manager = snd_soc_dai_get_drvdata(dai);
+ struct sdw_amd_dai_runtime *dai_runtime;
+
+ dai_runtime = amd_manager->dai_runtime_array[dai->id];
+ if (stream) {
+ /* first paranoia check */
+ if (dai_runtime) {
+ dev_err(dai->dev,
+ "dai_runtime already allocated for dai %s\n",
+ dai->name);
+ return -EINVAL;
+ }
+
+ /* allocate and set dai_runtime info */
+ dai_runtime = kzalloc(sizeof(*dai_runtime), GFP_KERNEL);
+ if (!dai_runtime)
+ return -ENOMEM;
+
+ dai_runtime->stream_type = SDW_STREAM_PCM;
+ dai_runtime->bus = &amd_manager->bus;
+ dai_runtime->stream = stream;
+ amd_manager->dai_runtime_array[dai->id] = dai_runtime;
+ } else {
+ /* second paranoia check */
+ if (!dai_runtime) {
+ dev_err(dai->dev,
+ "dai_runtime not allocated for dai %s\n",
+ dai->name);
+ return -EINVAL;
+ }
+
+ /* for NULL stream we release allocated dai_runtime */
+ kfree(dai_runtime);
+ amd_manager->dai_runtime_array[dai->id] = NULL;
+ }
+ return 0;
+}
+
+static int amd_pcm_set_sdw_stream(struct snd_soc_dai *dai, void *stream, int direction)
+{
+ return amd_set_sdw_stream(dai, stream, direction);
+}
+
+static void *amd_get_sdw_stream(struct snd_soc_dai *dai, int direction)
+{
+ struct amd_sdw_manager *amd_manager = snd_soc_dai_get_drvdata(dai);
+ struct sdw_amd_dai_runtime *dai_runtime;
+
+ dai_runtime = amd_manager->dai_runtime_array[dai->id];
+ if (!dai_runtime)
+ return ERR_PTR(-EINVAL);
+
+ return dai_runtime->stream;
+}
+
+static const struct snd_soc_dai_ops amd_sdw_dai_ops = {
+ .hw_params = amd_sdw_hw_params,
+ .hw_free = amd_sdw_hw_free,
+ .set_stream = amd_pcm_set_sdw_stream,
+ .get_stream = amd_get_sdw_stream,
+};
+
+static const struct snd_soc_component_driver amd_sdw_dai_component = {
+ .name = "soundwire",
+};
+
+static int amd_sdw_register_dais(struct amd_sdw_manager *amd_manager)
+{
+ struct sdw_amd_dai_runtime **dai_runtime_array;
+ struct snd_soc_dai_driver *dais;
+ struct snd_soc_pcm_stream *stream;
+ struct device *dev;
+ int i, num_dais;
+
+ dev = amd_manager->dev;
+ num_dais = amd_manager->num_dout_ports + amd_manager->num_din_ports;
+ dais = devm_kcalloc(dev, num_dais, sizeof(*dais), GFP_KERNEL);
+ if (!dais)
+ return -ENOMEM;
+
+ dai_runtime_array = devm_kcalloc(dev, num_dais,
+ sizeof(struct sdw_amd_dai_runtime *),
+ GFP_KERNEL);
+ if (!dai_runtime_array)
+ return -ENOMEM;
+ amd_manager->dai_runtime_array = dai_runtime_array;
+ for (i = 0; i < num_dais; i++) {
+ dais[i].name = devm_kasprintf(dev, GFP_KERNEL, "SDW%d Pin%d", amd_manager->instance,
+ i);
+ if (!dais[i].name)
+ return -ENOMEM;
+ if (i < amd_manager->num_dout_ports)
+ stream = &dais[i].playback;
+ else
+ stream = &dais[i].capture;
+
+ stream->channels_min = 2;
+ stream->channels_max = 2;
+ stream->rates = SNDRV_PCM_RATE_48000;
+ stream->formats = SNDRV_PCM_FMTBIT_S16_LE;
+
+ dais[i].ops = &amd_sdw_dai_ops;
+ dais[i].id = i;
+ }
+
+ return devm_snd_soc_register_component(dev, &amd_sdw_dai_component,
+ dais, num_dais);
+}
+
static void amd_sdw_probe_work(struct work_struct *work)
{
struct amd_sdw_manager *amd_manager = container_of(work, struct amd_sdw_manager,
@@ -726,6 +902,12 @@ static int amd_sdw_manager_probe(struct platform_device *pdev)
dev_err(dev, "Failed to register Soundwire manager(%d)\n", ret);
return ret;
}
+ ret = amd_sdw_register_dais(amd_manager);
+ if (ret) {
+ dev_err(dev, "CPU DAI registration failed\n");
+ sdw_bus_master_delete(&amd_manager->bus);
+ return ret;
+ }
dev_set_drvdata(dev, amd_manager);
INIT_WORK(&amd_manager->probe_work, amd_sdw_probe_work);
schedule_work(&amd_manager->probe_work);
diff --git a/drivers/soundwire/amd_manager.h b/drivers/soundwire/amd_manager.h
index 811ed9ee3d86..3e1bded1e769 100644
--- a/drivers/soundwire/amd_manager.h
+++ b/drivers/soundwire/amd_manager.h
@@ -205,6 +205,24 @@ struct sdw_manager_dp_reg {
u32 lane_ctrl_ch_en_reg;
};

+/*
+ * SDW0 Manager instance registers 6 CPU DAI (3 TX & 3 RX Ports)
+ * whereas SDW1 Manager Instance registers 2 CPU DAI (one TX & one RX port)
+ * Below is the CPU DAI <->Manager port number mapping
+ * i.e SDW0 Pin0 -> port number 0 -> AUDIO0 TX
+ * SDW0 Pin1 -> Port number 1 -> AUDIO1 TX
+ * SDW0 Pin2 -> Port number 2 -> AUDIO2 TX
+ * SDW0 Pin3 -> port number 3 -> AUDIO0 RX
+ * SDW0 Pin4 -> Port number 4 -> AUDIO1 RX
+ * SDW0 Pin5 -> Port number 5 -> AUDIO2 RX
+ * Whereas for SDW1 instance
+ * SDW1 Pin0 -> port number 0 -> AUDIO1 TX
+ * SDW1 Pin1 -> Port number 1 -> AUDIO1 RX
+ * Same mapping should be used for programming DMA controller registers in Soundwire DMA driver.
+ * i.e if AUDIO0 TX channel is selected then we need to use AUDIO0 TX registers for DMA programming
+ * in Soundwire DMA driver.
+ */
+
static struct sdw_manager_dp_reg sdw0_manager_dp_reg[AMD_SDW0_MAX_DAI] = {
{ACP_SW_AUDIO0_TX_FRAME_FORMAT, ACP_SW_AUDIO0_TX_SAMPLEINTERVAL, ACP_SW_AUDIO0_TX_HCTRL_DP0,
ACP_SW_AUDIO0_TX_OFFSET_DP0, ACP_SW_AUDIO0_TX_CHANNEL_ENABLE_DP0},
diff --git a/include/linux/soundwire/sdw_amd.h b/include/linux/soundwire/sdw_amd.h
index 922d30a540fd..c978cfbc0207 100644
--- a/include/linux/soundwire/sdw_amd.h
+++ b/include/linux/soundwire/sdw_amd.h
@@ -23,6 +23,21 @@ struct sdw_manager_reg_mask {
u32 acp_sdw_intr_mask;
};

+/**
+ * struct sdw_amd_dai_runtime: AMD sdw dai runtime data
+ *
+ * @name: SoundWire stream name
+ * @stream: stream runtime
+ * @bus: Bus handle
+ * @stream_type: Stream type
+ */
+struct sdw_amd_dai_runtime {
+ char *name;
+ struct sdw_stream_runtime *stream;
+ struct sdw_bus *bus;
+ enum sdw_stream_type stream_type;
+};
+
/**
* struct amd_sdw_manager - amd manager driver context
* @bus: bus handle
@@ -40,6 +55,7 @@ struct sdw_manager_reg_mask {
* @quirks: soundwire manager quirks
* @wake_en_mask: wake enable mask per soundwire manager
* @power_mode_mask: flag interprets amd soundwire manager power mode
+ * @dai_runtime_array: dai runtime array
*/
struct amd_sdw_manager {
struct sdw_bus bus;
@@ -63,5 +79,7 @@ struct amd_sdw_manager {
u32 quirks;
u32 wake_en_mask;
u32 power_mode_mask;
+
+ struct sdw_amd_dai_runtime **dai_runtime_array;
};
#endif
--
2.34.1