[PATCH 2/3] ASoC: SOF: Intel: HDA: add hw params callback for SSP DAIs

[Kai Vehmanen]

From: Jaska Uimonen <jaska.uimonen at linux.intel.com>

Currently SSP DAIs don't have hw params callback function as there
wasn't anything to setup after initial topology loading. After enabling
multiple DAI configs the current config can be sent in the callback.

This patch changes the way SSP config ipc is sent to the dsp. Before it
was only sent once in topology loading, but now it will be additionally
sent always when stream is opened. Mechanism is similar as with HDA
DAIs.

Signed-off-by: Jaska Uimonen <jaska.uimonen at linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski at linux.intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen at linux.intel.com>
---
 sound/soc/sof/intel/hda-dai.c | 44 +++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/sound/soc/sof/intel/hda-dai.c b/sound/soc/sof/intel/hda-dai.c
index c6cb8c212eca..8d7bab433fb3 100644
--- a/sound/soc/sof/intel/hda-dai.c
+++ b/sound/soc/sof/intel/hda-dai.c
@@ -414,6 +414,44 @@ static struct snd_soc_cdai_ops sof_probe_compr_ops = {
 #endif
 #endif
 
+static int ssp_dai_hw_params(struct snd_pcm_substream *substream,
+			     struct snd_pcm_hw_params *params,
+			     struct snd_soc_dai *dai)
+{
+	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+	struct snd_soc_component *component = snd_soc_rtdcom_lookup(rtd, SOF_AUDIO_PCM_DRV_NAME);
+	struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(component);
+	struct sof_ipc_dai_config *config;
+	struct snd_sof_dai *sof_dai;
+	struct sof_ipc_reply reply;
+	int ret;
+
+	list_for_each_entry(sof_dai, &sdev->dai_list, list) {
+		if (!sof_dai->cpu_dai_name || !sof_dai->dai_config)
+			continue;
+
+		if (!strcmp(dai->name, sof_dai->cpu_dai_name) &&
+		    substream->stream == sof_dai->comp_dai.direction) {
+			config = &sof_dai->dai_config[sof_dai->current_config];
+
+			/* send IPC */
+			ret = sof_ipc_tx_message(sdev->ipc, config->hdr.cmd, config,
+						 config->hdr.size, &reply, sizeof(reply));
+
+			if (ret < 0)
+				dev_err(sdev->dev, "error: failed to set DAI config for %s\n",
+					sof_dai->name);
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static const struct snd_soc_dai_ops ssp_dai_ops = {
+	.hw_params = ssp_dai_hw_params,
+};
+
 /*
  * common dai driver for skl+ platforms.
  * some products who use this DAI array only physically have a subset of
@@ -422,6 +460,7 @@ static struct snd_soc_cdai_ops sof_probe_compr_ops = {
 struct snd_soc_dai_driver skl_dai[] = {
 {
 	.name = "SSP0 Pin",
+	.ops = &ssp_dai_ops,
 	.playback = {
 		.channels_min = 1,
 		.channels_max = 8,
@@ -433,6 +472,7 @@ struct snd_soc_dai_driver skl_dai[] = {
 },
 {
 	.name = "SSP1 Pin",
+	.ops = &ssp_dai_ops,
 	.playback = {
 		.channels_min = 1,
 		.channels_max = 8,
@@ -444,6 +484,7 @@ struct snd_soc_dai_driver skl_dai[] = {
 },
 {
 	.name = "SSP2 Pin",
+	.ops = &ssp_dai_ops,
 	.playback = {
 		.channels_min = 1,
 		.channels_max = 8,
@@ -455,6 +496,7 @@ struct snd_soc_dai_driver skl_dai[] = {
 },
 {
 	.name = "SSP3 Pin",
+	.ops = &ssp_dai_ops,
 	.playback = {
 		.channels_min = 1,
 		.channels_max = 8,
@@ -466,6 +508,7 @@ struct snd_soc_dai_driver skl_dai[] = {
 },
 {
 	.name = "SSP4 Pin",
+	.ops = &ssp_dai_ops,
 	.playback = {
 		.channels_min = 1,
 		.channels_max = 8,
@@ -477,6 +520,7 @@ struct snd_soc_dai_driver skl_dai[] = {
 },
 {
 	.name = "SSP5 Pin",
+	.ops = &ssp_dai_ops,
 	.playback = {
 		.channels_min = 1,
 		.channels_max = 8,
-- 
2.31.0