ASoC: stm32: sai: Add support of S/PDIF playback

Add support of S/PDIF iec60958 playback on STM32 SAI.
Signed-off-by: olivier moysan <olivier.moysan@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/stm/stm32_sai.c

@@ -30,10 +30,12 @@
 
 static const struct stm32_sai_conf stm32_sai_conf_f4 = {
 	.version = SAI_STM32F4,
+	.has_spdif = false,
 };
 
 static const struct stm32_sai_conf stm32_sai_conf_h7 = {
 	.version = SAI_STM32H7,
+	.has_spdif = true,
 };
 
 static const struct of_device_id stm32_sai_ids[] = {

sound/soc/stm/stm32_sai.h

@@ -248,9 +248,11 @@ enum stm32_sai_version {
 /**
  * struct stm32_sai_conf - SAI configuration
  * @version: SAI version
+ * @has_spdif: SAI S/PDIF support flag
  */
 struct stm32_sai_conf {
 	int version;
+	bool has_spdif;
 };
 
 /**