ASoC: rsnd: DMA become SSI/SRC member

Renesas sound needs many devices
(SSI/SSIU/SRC/CTU/MIX/DVC/CMD/AudioDMAC/AudioDMACpp).
SSI/SRC/CTU/MIX/DVC are implemented as module.
SSI parent, SSIU are implemented as part of SSI
CMD is implemented as part of CTU/MIX/DVC
AudioDMAC/AudioDMACpp are implemented as part of SSI/SRC
It is nice sense that these all devices are implemented as mod.

Current rsnd_mod is member of rsnd_mod. But the DMA user is only
SSI/SRC. This DMA will be implemented as module. As 1st step, DMA
become SSI/SRC member by this patch.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sh/rcar/dma.c

@@ -606,14 +606,17 @@ void rsnd_dma_quit(struct rsnd_dai_stream *io, struct rsnd_dma *dma)
 	dma->ops->quit(io, dma);
 }
 
-int rsnd_dma_init(struct rsnd_dai_stream *io, struct rsnd_dma *dma, int id)
+struct rsnd_dma *rsnd_dma_init(struct rsnd_dai_stream *io,
+			       struct rsnd_mod *mod, int id)
 {
 	struct rsnd_mod *mod_from = NULL;
 	struct rsnd_mod *mod_to = NULL;
 	struct rsnd_priv *priv = rsnd_io_to_priv(io);
 	struct rsnd_dma_ctrl *dmac = rsnd_priv_to_dmac(priv);
+	struct rsnd_dma *dma;
 	struct device *dev = rsnd_priv_to_dev(priv);
 	int is_play = rsnd_io_is_play(io);
+	int ret;
 
 	/*
 	 * DMA failed. try to PIO mode
@@ -622,7 +625,13 @@ int rsnd_dma_init(struct rsnd_dai_stream *io, struct rsnd_dma *dma, int id)
 	 *	rsnd_rdai_continuance_probe()
 	 */
 	if (!dmac)
-		return -EAGAIN;
+		return ERR_PTR(-EAGAIN);
+
+	dma = devm_kzalloc(dev, sizeof(*dma), GFP_KERNEL);
+	if (!dma)
+		return ERR_PTR(-ENOMEM);
+
+	dma->mod = mod;
 
 	rsnd_dma_of_path(dma, io, is_play, &mod_from, &mod_to);
 
@@ -644,7 +653,11 @@ int rsnd_dma_init(struct rsnd_dai_stream *io, struct rsnd_dma *dma, int id)
 		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);
+	ret = dma->ops->init(io, dma, id, mod_from, mod_to);
+	if (ret < 0)
+		return ERR_PTR(ret);
+
+	return dma;
 }
 
 int rsnd_dma_probe(struct platform_device *pdev,

sound/soc/sh/rcar/rsnd.h

@@ -206,6 +206,7 @@ struct rsnd_dmapp {
 
 struct rsnd_dma {
 	struct rsnd_dma_ops	*ops;
+	struct rsnd_mod		*mod;
 	dma_addr_t		src_addr;
 	dma_addr_t		dst_addr;
 	union {
@@ -215,11 +216,12 @@ struct rsnd_dma {
 };
 #define rsnd_dma_to_dmaen(dma)	(&(dma)->dma.en)
 #define rsnd_dma_to_dmapp(dma)	(&(dma)->dma.pp)
-#define rsnd_dma_to_mod(_dma) container_of((_dma), struct rsnd_mod, dma)
+#define rsnd_dma_to_mod(_dma) ((dma)->mod)
 
 void rsnd_dma_start(struct rsnd_dai_stream *io, struct rsnd_dma *dma);
 void rsnd_dma_stop(struct rsnd_dai_stream *io, struct rsnd_dma *dma);
-int rsnd_dma_init(struct rsnd_dai_stream *io, struct rsnd_dma *dma, int id);
+struct rsnd_dma *rsnd_dma_init(struct rsnd_dai_stream *io,
+			       struct rsnd_mod *mod, int id);
 void rsnd_dma_quit(struct rsnd_dai_stream *io, struct rsnd_dma *dma);
 int rsnd_dma_probe(struct platform_device *pdev,
 		   const struct rsnd_of_data *of_data,
@@ -278,7 +280,6 @@ struct rsnd_mod {
 	int id;
 	enum rsnd_mod_type type;
 	struct rsnd_mod_ops *ops;
-	struct rsnd_dma dma;
 	struct rsnd_priv *priv;
 	struct clk *clk;
 	u32 status;
@@ -328,7 +329,6 @@ struct rsnd_mod {
 #define __rsnd_mod_call_hw_params	0
 
 #define rsnd_mod_to_priv(mod) ((mod)->priv)
-#define rsnd_mod_to_dma(mod) (&(mod)->dma)
 #define rsnd_mod_id(mod) ((mod) ? (mod)->id : -1)
 #define rsnd_mod_power_on(mod)	clk_enable((mod)->clk)
 #define rsnd_mod_power_off(mod)	clk_disable((mod)->clk)

sound/soc/sh/rcar/src.c

@@ -22,6 +22,7 @@
 struct rsnd_src {
 	struct rsnd_src_platform_info *info; /* rcar_snd.h */
 	struct rsnd_mod mod;
+	struct rsnd_dma *dma;
 	struct rsnd_kctrl_cfg_s sen;  /* sync convert enable */
 	struct rsnd_kctrl_cfg_s sync; /* sync convert */
 	u32 convert_rate; /* sampling rate convert */
@@ -30,6 +31,7 @@ struct rsnd_src {
 
 #define RSND_SRC_NAME_SIZE 16
 
+#define rsnd_src_to_dma(src) ((src)->dma)
 #define rsnd_src_nr(priv) ((priv)->src_nr)
 #define rsnd_enable_sync_convert(src) ((src)->sen.val)
 #define rsnd_src_of_node(priv) \
@@ -839,9 +841,9 @@ static int rsnd_src_probe_gen2(struct rsnd_mod *mod,
 			return ret;
 	}
 
-	ret = rsnd_dma_init(io,
-			    rsnd_mod_to_dma(mod),
-			    src->info->dma_id);
+	src->dma = rsnd_dma_init(io, mod, src->info->dma_id);
+	if (IS_ERR(src->dma))
+		return PTR_ERR(src->dma);
 
 	return ret;
 }
@@ -850,7 +852,9 @@ static int rsnd_src_remove_gen2(struct rsnd_mod *mod,
 				struct rsnd_dai_stream *io,
 				struct rsnd_priv *priv)
 {
-	rsnd_dma_quit(io, rsnd_mod_to_dma(mod));
+	struct rsnd_src *src = rsnd_mod_to_src(mod);
+
+	rsnd_dma_quit(io, rsnd_src_to_dma(src));
 
 	return 0;
 }
@@ -880,7 +884,9 @@ static int rsnd_src_start_gen2(struct rsnd_mod *mod,
 			       struct rsnd_dai_stream *io,
 			       struct rsnd_priv *priv)
 {
-	rsnd_dma_start(io, rsnd_mod_to_dma(mod));
+	struct rsnd_src *src = rsnd_mod_to_src(mod);
+
+	rsnd_dma_start(io, rsnd_src_to_dma(src));
 
 	return _rsnd_src_start_gen2(mod, io);
 }
@@ -889,11 +895,12 @@ static int rsnd_src_stop_gen2(struct rsnd_mod *mod,
 			      struct rsnd_dai_stream *io,
 			      struct rsnd_priv *priv)
 {
+	struct rsnd_src *src = rsnd_mod_to_src(mod);
 	int ret;
 
 	ret = _rsnd_src_stop_gen2(mod);
 
-	rsnd_dma_stop(io, rsnd_mod_to_dma(mod));
+	rsnd_dma_stop(io, rsnd_src_to_dma(src));
 
 	return ret;
 }

sound/soc/sh/rcar/ssi.c

@@ -63,6 +63,7 @@ struct rsnd_ssi {
 	struct rsnd_ssi_platform_info *info; /* rcar_snd.h */
 	struct rsnd_ssi *parent;
 	struct rsnd_mod mod;
+	struct rsnd_dma *dma;
 
 	u32 cr_own;
 	u32 cr_clk;
@@ -77,6 +78,7 @@ struct rsnd_ssi {
 		((pos) = ((struct rsnd_ssi *)(priv)->ssi + i));		\
 	     i++)
 
+#define rsnd_ssi_to_dma(mod) ((ssi)->dma)
 #define rsnd_ssi_nr(priv) ((priv)->ssi_nr)
 #define rsnd_mod_to_ssi(_mod) container_of((_mod), struct rsnd_ssi, mod)
 #define rsnd_ssi_pio_available(ssi) ((ssi)->info->irq > 0)
@@ -537,9 +539,9 @@ static int rsnd_ssi_dma_probe(struct rsnd_mod *mod,
 	if (ret)
 		return ret;
 
-	ret = rsnd_dma_init(
-		io, rsnd_mod_to_dma(mod),
-		dma_id);
+	ssi->dma = rsnd_dma_init(io, mod, dma_id);
+	if (IS_ERR(ssi->dma))
+		return PTR_ERR(ssi->dma);
 
 	return ret;
 }
@@ -552,7 +554,7 @@ static int rsnd_ssi_dma_remove(struct rsnd_mod *mod,
 	struct device *dev = rsnd_priv_to_dev(priv);
 	int irq = ssi->info->irq;
 
-	rsnd_dma_quit(io, rsnd_mod_to_dma(mod));
+	rsnd_dma_quit(io, rsnd_ssi_to_dma(ssi));
 
 	/* PIO will request IRQ again */
 	devm_free_irq(dev, irq, mod);
@@ -585,7 +587,8 @@ static int rsnd_ssi_dma_start(struct rsnd_mod *mod,
 			      struct rsnd_dai_stream *io,
 			      struct rsnd_priv *priv)
 {
-	struct rsnd_dma *dma = rsnd_mod_to_dma(mod);
+	struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
+	struct rsnd_dma *dma = rsnd_ssi_to_dma(ssi);
 
 	rsnd_dma_start(io, dma);
 
@@ -598,7 +601,8 @@ static int rsnd_ssi_dma_stop(struct rsnd_mod *mod,
 			     struct rsnd_dai_stream *io,
 			     struct rsnd_priv *priv)
 {
-	struct rsnd_dma *dma = rsnd_mod_to_dma(mod);
+	struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
+	struct rsnd_dma *dma = rsnd_ssi_to_dma(ssi);
 
 	rsnd_ssi_stop(mod, io, priv);