ASoC: rsnd: tidyup SSI interrupt enable/disable method

Current SSI doesn't care interrupt "disable" method. And, it is used
when PIO mode only at this point. SSI interrupt will be used for
sound R/L issue workaround when DMA mode too.
This patch tidyup SSI interrupt enable/disable method.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sh/rcar/rsnd.h

@@ -432,7 +432,9 @@ int rsnd_src_ssiu_start(struct rsnd_mod *ssi_mod,
 			int use_busif);
 int rsnd_src_ssiu_stop(struct rsnd_mod *ssi_mod,
 		       struct rsnd_dai *rdai);
-int rsnd_src_enable_ssi_irq(struct rsnd_mod *ssi_mod,
+int rsnd_src_ssi_irq_enable(struct rsnd_mod *ssi_mod,
+			    struct rsnd_dai *rdai);
+int rsnd_src_ssi_irq_disable(struct rsnd_mod *ssi_mod,
 			     struct rsnd_dai *rdai);
 
 #define rsnd_src_nr(priv) ((priv)->src_nr)

sound/soc/sh/rcar/src.c

@@ -185,18 +185,37 @@ int rsnd_src_ssiu_stop(struct rsnd_mod *ssi_mod,
 	return 0;
 }
 
-int rsnd_src_enable_ssi_irq(struct rsnd_mod *ssi_mod,
+int rsnd_src_ssi_irq_enable(struct rsnd_mod *ssi_mod,
 			    struct rsnd_dai *rdai)
 {
 	struct rsnd_priv *priv = rsnd_mod_to_priv(ssi_mod);
 
-	/* enable PIO interrupt if Gen2 */
-	if (rsnd_is_gen2(priv))
+	if (rsnd_is_gen1(priv))
+		return 0;
+
+	/* enable SSI interrupt if Gen2 */
+	if (rsnd_ssi_is_dma_mode(ssi_mod))
+		rsnd_mod_write(ssi_mod, INT_ENABLE, 0x0e000000);
+	else
 		rsnd_mod_write(ssi_mod, INT_ENABLE, 0x0f000000);
 
 	return 0;
 }
 
+int rsnd_src_ssi_irq_disable(struct rsnd_mod *ssi_mod,
+			    struct rsnd_dai *rdai)
+{
+	struct rsnd_priv *priv = rsnd_mod_to_priv(ssi_mod);
+
+	if (rsnd_is_gen1(priv))
+		return 0;
+
+	/* disable SSI interrupt if Gen2 */
+	rsnd_mod_write(ssi_mod, INT_ENABLE, 0x00000000);
+
+	return 0;
+}
+
 unsigned int rsnd_src_get_ssi_rate(struct rsnd_priv *priv,
 				   struct rsnd_dai_stream *io,
 				   struct snd_pcm_runtime *runtime)

sound/soc/sh/rcar/ssi.c

@@ -410,10 +410,10 @@ static int rsnd_ssi_pio_start(struct rsnd_mod *mod,
 
 	rsnd_src_ssiu_start(mod, rdai, 0);
 
-	rsnd_src_enable_ssi_irq(mod, rdai);
-
 	rsnd_ssi_hw_start(ssi, rdai, io);
 
+	rsnd_src_ssi_irq_enable(mod, rdai);
+
 	return 0;
 }
 
@@ -422,6 +422,8 @@ static int rsnd_ssi_pio_stop(struct rsnd_mod *mod,
 {
 	struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
 
+	rsnd_src_ssi_irq_disable(mod, rdai);
+
 	rsnd_ssi_hw_stop(ssi, rdai);
 
 	rsnd_src_ssiu_stop(mod, rdai);