ASoC: rsnd: add common interrupt handler for SSI/SRC/DMA

Each Renesas sound mod (= SSI/SRC/DVC) might be called from many paths
if it supports MIXer. In such case, mod <-> io is no longer 1:1
relationship. Then, interrupt handler can't use rsnd_mod_to_io().
This patch adds SSI/SRC/DMA common interrupt handler frame
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Keita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sh/rcar/core.c

@@ -172,6 +172,29 @@ void rsnd_mod_quit(struct rsnd_mod *mod)
 		clk_unprepare(mod->clk);
 }
 
+void rsnd_mod_interrupt(struct rsnd_mod *mod,
+			void (*callback)(struct rsnd_mod *mod,
+					 struct rsnd_dai_stream *io))
+{
+	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+	struct rsnd_dai_stream *io;
+	struct rsnd_dai *rdai;
+	int i, j;
+
+	for_each_rsnd_dai(rdai, priv, j) {
+
+		for (i = 0; i < RSND_MOD_MAX; i++) {
+			io = &rdai->playback;
+			if (mod == io->mod[i])
+				callback(mod, io);
+
+			io = &rdai->capture;
+			if (mod == io->mod[i])
+				callback(mod, io);
+		}
+	}
+}
+
 int rsnd_mod_is_working(struct rsnd_mod *mod)
 {
 	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);

sound/soc/sh/rcar/rsnd.h

@@ -327,6 +327,9 @@ void rsnd_mod_quit(struct rsnd_mod *mod);
 char *rsnd_mod_name(struct rsnd_mod *mod);
 int rsnd_mod_is_working(struct rsnd_mod *mod);
 struct dma_chan *rsnd_mod_dma_req(struct rsnd_mod *mod);
+void rsnd_mod_interrupt(struct rsnd_mod *mod,
+			void (*callback)(struct rsnd_mod *mod,
+					 struct rsnd_dai_stream *io));
 
 /*
  *	R-Car sound DAI