ASoC: rsnd: dma: add DMA name on .ops

Current rsnd driver is using Audio DMAC (via DMAEngine) and
Audio DMAC peri peri (via original method), and usage of these DMAC
are different. Indicates its naming is useful for debugging.
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/dma.c

@@ -28,6 +28,7 @@ struct rsnd_dma_ctrl {
 };
 
 struct rsnd_dma_ops {
+	char *name;
 	void (*start)(struct rsnd_dai_stream *io, struct rsnd_dma *dma);
 	void (*stop)(struct rsnd_dai_stream *io, struct rsnd_dma *dma);
 	int (*init)(struct rsnd_dai_stream *io, struct rsnd_dma *dma, int id,
@@ -190,7 +191,8 @@ static int rsnd_dmaen_init(struct rsnd_dai_stream *io,
 	cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
 	cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
 
-	dev_dbg(dev, "dma : %pad -> %pad\n",
+	dev_dbg(dev, "%s %pad -> %pad\n",
+		dma->ops->name,
 		&cfg.src_addr, &cfg.dst_addr);
 
 	ret = dmaengine_slave_config(dmaen->chan, &cfg);
@@ -223,6 +225,7 @@ static void rsnd_dmaen_quit(struct rsnd_dai_stream *io, struct rsnd_dma *dma)
 }
 
 static struct rsnd_dma_ops rsnd_dmaen_ops = {
+	.name	= "audmac",
 	.start	= rsnd_dmaen_start,
 	.stop	= rsnd_dmaen_stop,
 	.init	= rsnd_dmaen_init,
@@ -368,6 +371,7 @@ static int rsnd_dmapp_init(struct rsnd_dai_stream *io,
 }
 
 static struct rsnd_dma_ops rsnd_dmapp_ops = {
+	.name	= "audmac-pp",
 	.start	= rsnd_dmapp_start,
 	.stop	= rsnd_dmapp_stop,
 	.init	= rsnd_dmapp_init,
@@ -580,6 +584,7 @@ int rsnd_dma_init(struct rsnd_dai_stream *io, struct rsnd_dma *dma, int id)
 	struct rsnd_mod *mod_to;
 	struct rsnd_priv *priv = rsnd_io_to_priv(io);
 	struct rsnd_dma_ctrl *dmac = rsnd_priv_to_dmac(priv);
+	struct device *dev = rsnd_priv_to_dev(priv);
 	int is_play = rsnd_io_is_play(io);
 
 	/*
@@ -606,6 +611,11 @@ int rsnd_dma_init(struct rsnd_dai_stream *io, struct rsnd_dma *dma, int id)
 	if (rsnd_is_gen1(priv))
 		dma->ops = &rsnd_dmaen_ops;
 
+	dev_dbg(dev, "%s %s[%d] -> %s[%d]\n",
+		dma->ops->name,
+		rsnd_mod_name(mod_from), rsnd_mod_id(mod_from),
+		rsnd_mod_name(mod_to),   rsnd_mod_id(mod_to));
+
 	return dma->ops->init(io, dma, id, mod_from, mod_to);
 }