[PATCH 02/12] ASoC: Intel: avs: Assign I2S gateway when parsing topology

[Cezary Rojewski]

For formatted port - ssp%d - descriptions to have an effect, copier
module templates need to be updated with specified port value. This
value is later propagated to the firmware when module instances are
being instantiated.

Signed-off-by: Cezary Rojewski <cezary.rojewski at intel.com>
---
 sound/soc/intel/avs/topology.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/sound/soc/intel/avs/topology.c b/sound/soc/intel/avs/topology.c
index 6a06fe387d13..8a9f9fc48938 100644
--- a/sound/soc/intel/avs/topology.c
+++ b/sound/soc/intel/avs/topology.c
@@ -808,6 +808,30 @@ static const struct avs_tplg_token_parser pin_format_parsers[] = {
 	},
 };
 
+static void
+assign_copier_gtw_instance(struct snd_soc_component *comp, struct avs_tplg_modcfg_ext *cfg)
+{
+	struct snd_soc_acpi_mach *mach;
+
+	if (!guid_equal(&cfg->type, &AVS_COPIER_MOD_UUID))
+		return;
+
+	/* Only I2S boards assign port instance in ->i2s_link_mask. */
+	switch (cfg->copier.dma_type) {
+	case AVS_DMA_I2S_LINK_OUTPUT:
+	case AVS_DMA_I2S_LINK_INPUT:
+		break;
+	default:
+		return;
+	}
+
+	mach = dev_get_platdata(comp->card->dev);
+
+	/* Automatic assignment only when board describes single SSP. */
+	if (hweight_long(mach->mach_params.i2s_link_mask) == 1 && !cfg->copier.vindex.i2s.instance)
+		cfg->copier.vindex.i2s.instance = __ffs(mach->mach_params.i2s_link_mask);
+}
+
 static int avs_tplg_parse_modcfg_ext(struct snd_soc_component *comp,
 				     struct avs_tplg_modcfg_ext *cfg,
 				     struct snd_soc_tplg_vendor_array *tuples,
@@ -827,6 +851,9 @@ static int avs_tplg_parse_modcfg_ext(struct snd_soc_component *comp,
 	if (ret)
 		return ret;
 
+	/* Update copier gateway based on board's i2s_link_mask. */
+	assign_copier_gtw_instance(comp, cfg);
+
 	block_size -= esize;
 	/* Parse trailing in/out pin formats if any. */
 	if (block_size) {
-- 
2.25.1