[PATCH 0/19] ASoC: rsnd: move 2nd DMAC from DMAEngine to rsnd driver

[PATCH 0/19] ASoC: rsnd: move 2nd DMAC from DMAEngine to rsnd driver

[Kuninori Morimoto]

Hi Mark, Arnd, Vinod
Cc: Laurent, SH-ML

Renesas R-Car sound (= rsnd) needs 2 DMAC which are called as
Audio DMAC (= 1st DMAC) and Audio DMAC peri peri (2nd DMAC).
And rsnd had assumed that 1st / 2nd DMACs are implemented as DMAEngine.
But, in result of DMA ML long term discussion, 2nd DMAC was concluded
that it is not a general purpose DMAC (2nd DMAC is for Device to Device
inside sound system). Additionally, current DMAEngine can't support Device
to Device, and we don't have correct DT bindings for it at this point.
So the easiest solution for it is that move it from DMAEngine to rsnd
driver.
http://thread.gmane.org/gmane.linux.ports.sh.devel/41063/focusC829

These patches add Audio DMAC peri peri implementation in rsnd driver.
I will remove current DMAEngine side Audio DMAC peri peri implement
if these are accepted.

Arnd, Vinod

I'm happy if you can send Ack for these patches


  1) -  5) are cleanup / tidyup rsnd driver
  6) - 11) adds Audio DMAC peri peri implementation in rsnd driver
 12)       change dma-names for 1st DMAC on DT
 13) - 14) cleanup. these are no longer needed now
 15) - 19) DT bindings text update

12) changes dma-names for 1st DMAC. It was assumed that 1st / 2nd
DMAC are used as DMAEngine. dma-names had same naming rule for
both DMAC to avoid complex DT mapping issue,
But now, 2nd DMAC is no longer DMAEngine, we don't need to use
this naming rule anymore.
Now, no SoC/platform is using DMA for rsnd driver yet in upstream.
I believe 12) is no problem for DT.

Kuninori Morimoto (19):
       1) ASoC: rsnd: remove SH-DMA-BASE specific implementation
       2) ASoC: rsnd: remove un-needed parameter from rsnd_dma_init()
       3) ASoC: rsnd: remove unused rsnd_dma_available()
       4) ASoC: rsnd: remove un-needed parameter from rsnd_dma_quit()
       5) ASoC: rsnd: tidyup rsnd_dma_to_mod() macro declaration position
       6) ASoC: rsnd: enable to get resource by name
       7) ASoC: rsnd: add rsnd_gen_get_phy_addr() to get physical address
       8) ASoC: rsnd: add dma.c for Audio DMAC / Audio DMAC peri peri
       9) ASoC: rsnd: move rsnd_gen_dma_addr() from gen.c to dma.c
      10) ASoC: rsnd: enable to care 1st / 2nd DMAC on rsnd_dma_xxx()
      11) ASoC: rsnd: add Audio DMAC peri peri support rework
      12) ASoC: rsnd: dma-names cares 1st DMAC only
      13) ASoC: rsnd: remove rsnd_dma::addr
      14) ASoC: rsnd: remove rsnd_dma::dir
      15) ASoC: rsnd: tidyup rcar_sound,ssi sample code
      16) ASoC: rsnd: add sample code of rcar_sound,src irq
      17) ASoC: rsnd: add sample code of reg-names
      18) ASoC: rsnd: add sample code of missing clocks
      19) ASoC: rsnd: add sample code of dma entry

 .../devicetree/bindings/sound/renesas,rsnd.txt     |  131 +++--
 sound/soc/sh/rcar/Makefile                         |    2 +-
 sound/soc/sh/rcar/core.c                           |  224 +-------
 sound/soc/sh/rcar/dma.c                            |  583 ++++++++++++++++++++
 sound/soc/sh/rcar/gen.c                            |  145 +----
 sound/soc/sh/rcar/rsnd.h                           |   50 +-
 sound/soc/sh/rcar/src.c                            |    5 +-
 sound/soc/sh/rcar/ssi.c                            |    5 +-
 8 files changed, 725 insertions(+), 420 deletions(-)



Best regards
---
Kuninori Morimoto

[PATCH 0/19] ASoC: rsnd: move 2nd DMAC from DMAEngine to rsnd driver

[Kuninori Morimoto]

Hi Mark, Arnd, Vinod
Cc: Laurent, SH-ML

Renesas R-Car sound (= rsnd) needs 2 DMAC which are called as
Audio DMAC (= 1st DMAC) and Audio DMAC peri peri (2nd DMAC).
And rsnd had assumed that 1st / 2nd DMACs are implemented as DMAEngine.
But, in result of DMA ML long term discussion, 2nd DMAC was concluded
that it is not a general purpose DMAC (2nd DMAC is for Device to Device
inside sound system). Additionally, current DMAEngine can't support Device
to Device, and we don't have correct DT bindings for it at this point.
So the easiest solution for it is that move it from DMAEngine to rsnd
driver.
http://thread.gmane.org/gmane.linux.ports.sh.devel/41063/focus=43829

These patches add Audio DMAC peri peri implementation in rsnd driver.
I will remove current DMAEngine side Audio DMAC peri peri implement
if these are accepted.

Arnd, Vinod

I'm happy if you can send Ack for these patches


  1) -  5) are cleanup / tidyup rsnd driver
  6) - 11) adds Audio DMAC peri peri implementation in rsnd driver
 12)       change dma-names for 1st DMAC on DT
 13) - 14) cleanup. these are no longer needed now
 15) - 19) DT bindings text update

12) changes dma-names for 1st DMAC. It was assumed that 1st / 2nd
DMAC are used as DMAEngine. dma-names had same naming rule for
both DMAC to avoid complex DT mapping issue,
But now, 2nd DMAC is no longer DMAEngine, we don't need to use
this naming rule anymore.
Now, no SoC/platform is using DMA for rsnd driver yet in upstream.
I believe 12) is no problem for DT.

Kuninori Morimoto (19):
       1) ASoC: rsnd: remove SH-DMA-BASE specific implementation
       2) ASoC: rsnd: remove un-needed parameter from rsnd_dma_init()
       3) ASoC: rsnd: remove unused rsnd_dma_available()
       4) ASoC: rsnd: remove un-needed parameter from rsnd_dma_quit()
       5) ASoC: rsnd: tidyup rsnd_dma_to_mod() macro declaration position
       6) ASoC: rsnd: enable to get resource by name
       7) ASoC: rsnd: add rsnd_gen_get_phy_addr() to get physical address
       8) ASoC: rsnd: add dma.c for Audio DMAC / Audio DMAC peri peri
       9) ASoC: rsnd: move rsnd_gen_dma_addr() from gen.c to dma.c
      10) ASoC: rsnd: enable to care 1st / 2nd DMAC on rsnd_dma_xxx()
      11) ASoC: rsnd: add Audio DMAC peri peri support rework
      12) ASoC: rsnd: dma-names cares 1st DMAC only
      13) ASoC: rsnd: remove rsnd_dma::addr
      14) ASoC: rsnd: remove rsnd_dma::dir
      15) ASoC: rsnd: tidyup rcar_sound,ssi sample code
      16) ASoC: rsnd: add sample code of rcar_sound,src irq
      17) ASoC: rsnd: add sample code of reg-names
      18) ASoC: rsnd: add sample code of missing clocks
      19) ASoC: rsnd: add sample code of dma entry

 .../devicetree/bindings/sound/renesas,rsnd.txt     |  131 +++--
 sound/soc/sh/rcar/Makefile                         |    2 +-
 sound/soc/sh/rcar/core.c                           |  224 +-------
 sound/soc/sh/rcar/dma.c                            |  583 ++++++++++++++++++++
 sound/soc/sh/rcar/gen.c                            |  145 +----
 sound/soc/sh/rcar/rsnd.h                           |   50 +-
 sound/soc/sh/rcar/src.c                            |    5 +-
 sound/soc/sh/rcar/ssi.c                            |    5 +-
 8 files changed, 725 insertions(+), 420 deletions(-)



Best regards
---
Kuninori Morimoto

[PATCH 01/19] ASoC: rsnd: remove SH-DMA-BASE specific implementation

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

Renesas R-Car sound had SH-DMA-BASE specific implementation before,
but, now, it is no longer needed. Let's remove it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 sound/soc/sh/rcar/core.c |    1 -
 sound/soc/sh/rcar/rsnd.h |    1 -
 2 files changed, 2 deletions(-)

diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
index 1b53605..0b14d37 100644
--- a/sound/soc/sh/rcar/core.c
+++ b/sound/soc/sh/rcar/core.c
@@ -94,7 +94,6 @@
  *
  */
 #include <linux/pm_runtime.h>
-#include <linux/shdma-base.h>
 #include "rsnd.h"
 
 #define RSND_RATES SNDRV_PCM_RATE_8000_96000
diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h
index e7914bd..5ffde9b 100644
--- a/sound/soc/sh/rcar/rsnd.h
+++ b/sound/soc/sh/rcar/rsnd.h
@@ -171,7 +171,6 @@ u32 rsnd_get_adinr(struct rsnd_mod *mod);
  *	R-Car DMA
  */
 struct rsnd_dma {
-	struct sh_dmae_slave	slave;
 	struct dma_chan		*chan;
 	enum dma_transfer_direction dir;
 	dma_addr_t		addr;
-- 
1.7.9.5

[PATCH 02/19] ASoC: rsnd: remove un-needed parameter from rsnd_dma_init()

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

It can get DMA direction via rsnd_dai_stream.
Remove un-needed is_play from rsnd_dma_init().

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 sound/soc/sh/rcar/core.c |    6 ++++--
 sound/soc/sh/rcar/rsnd.h |   16 +---------------
 sound/soc/sh/rcar/src.c  |    1 -
 sound/soc/sh/rcar/ssi.c  |    1 -
 4 files changed, 5 insertions(+), 19 deletions(-)

diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
index 0b14d37..1edf4dc 100644
--- a/sound/soc/sh/rcar/core.c
+++ b/sound/soc/sh/rcar/core.c
@@ -311,13 +311,15 @@ static void rsnd_dma_of_path(struct rsnd_dma *dma,
 	}
 }
 
-int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma,
-		  int is_play, int id)
+int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id)
 {
 	struct device *dev = rsnd_priv_to_dev(priv);
 	struct dma_slave_config cfg;
+	struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
 	struct rsnd_mod *mod_from;
 	struct rsnd_mod *mod_to;
+	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+	int is_play = rsnd_io_is_play(io);
 	char dma_name[DMA_NAME_SIZE];
 	dma_cap_mask_t mask;
 	int ret;
diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h
index 5ffde9b..93a1a25 100644
--- a/sound/soc/sh/rcar/rsnd.h
+++ b/sound/soc/sh/rcar/rsnd.h
@@ -179,8 +179,7 @@ struct rsnd_dma {
 void rsnd_dma_start(struct rsnd_dma *dma);
 void rsnd_dma_stop(struct rsnd_dma *dma);
 int rsnd_dma_available(struct rsnd_dma *dma);
-int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma,
-	int is_play, int id);
+int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id);
 void  rsnd_dma_quit(struct rsnd_priv *priv,
 		    struct rsnd_dma *dma);
 
@@ -413,19 +412,6 @@ struct rsnd_priv {
 #define rsnd_lock(priv, flags) spin_lock_irqsave(&priv->lock, flags)
 #define rsnd_unlock(priv, flags) spin_unlock_irqrestore(&priv->lock, flags)
 
-#define rsnd_info_is_playback(priv, type)				\
-({									\
-	struct rcar_snd_info *info = rsnd_priv_to_info(priv);		\
-	int i, is_play = 0;						\
-	for (i = 0; i < info->dai_info_nr; i++) {			\
-		if (info->dai_info[i].playback.type = (type)->info) {	\
-			is_play = 1;					\
-			break;						\
-		}							\
-	}								\
-	is_play;							\
-})
-
 /*
  *	rsnd_kctrl
  */
diff --git a/sound/soc/sh/rcar/src.c b/sound/soc/sh/rcar/src.c
index 81c182b..7fb8798 100644
--- a/sound/soc/sh/rcar/src.c
+++ b/sound/soc/sh/rcar/src.c
@@ -713,7 +713,6 @@ static int rsnd_src_probe_gen2(struct rsnd_mod *mod,
 
 	ret = rsnd_dma_init(priv,
 			    rsnd_mod_to_dma(mod),
-			    rsnd_info_is_playback(priv, src),
 			    src->info->dma_id);
 	if (ret)
 		goto rsnd_src_probe_gen2_fail;
diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index 9e7b627..57e737c 100644
--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -478,7 +478,6 @@ static int rsnd_ssi_dma_probe(struct rsnd_mod *mod,
 
 	ret = rsnd_dma_init(
 		priv, rsnd_mod_to_dma(mod),
-		rsnd_info_is_playback(priv, ssi),
 		dma_id);
 	if (ret)
 		goto rsnd_ssi_dma_probe_fail;
-- 
1.7.9.5

[PATCH 02/19] ASoC: rsnd: remove un-needed parameter from rsnd_dma_init()

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

It can get DMA direction via rsnd_dai_stream.
Remove un-needed is_play from rsnd_dma_init().

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 sound/soc/sh/rcar/core.c |    6 ++++--
 sound/soc/sh/rcar/rsnd.h |   16 +---------------
 sound/soc/sh/rcar/src.c  |    1 -
 sound/soc/sh/rcar/ssi.c  |    1 -
 4 files changed, 5 insertions(+), 19 deletions(-)

diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
index 0b14d37..1edf4dc 100644
--- a/sound/soc/sh/rcar/core.c
+++ b/sound/soc/sh/rcar/core.c
@@ -311,13 +311,15 @@ static void rsnd_dma_of_path(struct rsnd_dma *dma,
 	}
 }
 
-int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma,
-		  int is_play, int id)
+int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id)
 {
 	struct device *dev = rsnd_priv_to_dev(priv);
 	struct dma_slave_config cfg;
+	struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
 	struct rsnd_mod *mod_from;
 	struct rsnd_mod *mod_to;
+	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+	int is_play = rsnd_io_is_play(io);
 	char dma_name[DMA_NAME_SIZE];
 	dma_cap_mask_t mask;
 	int ret;
diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h
index 5ffde9b..93a1a25 100644
--- a/sound/soc/sh/rcar/rsnd.h
+++ b/sound/soc/sh/rcar/rsnd.h
@@ -179,8 +179,7 @@ struct rsnd_dma {
 void rsnd_dma_start(struct rsnd_dma *dma);
 void rsnd_dma_stop(struct rsnd_dma *dma);
 int rsnd_dma_available(struct rsnd_dma *dma);
-int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma,
-	int is_play, int id);
+int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id);
 void  rsnd_dma_quit(struct rsnd_priv *priv,
 		    struct rsnd_dma *dma);
 
@@ -413,19 +412,6 @@ struct rsnd_priv {
 #define rsnd_lock(priv, flags) spin_lock_irqsave(&priv->lock, flags)
 #define rsnd_unlock(priv, flags) spin_unlock_irqrestore(&priv->lock, flags)
 
-#define rsnd_info_is_playback(priv, type)				\
-({									\
-	struct rcar_snd_info *info = rsnd_priv_to_info(priv);		\
-	int i, is_play = 0;						\
-	for (i = 0; i < info->dai_info_nr; i++) {			\
-		if (info->dai_info[i].playback.type == (type)->info) {	\
-			is_play = 1;					\
-			break;						\
-		}							\
-	}								\
-	is_play;							\
-})
-
 /*
  *	rsnd_kctrl
  */
diff --git a/sound/soc/sh/rcar/src.c b/sound/soc/sh/rcar/src.c
index 81c182b..7fb8798 100644
--- a/sound/soc/sh/rcar/src.c
+++ b/sound/soc/sh/rcar/src.c
@@ -713,7 +713,6 @@ static int rsnd_src_probe_gen2(struct rsnd_mod *mod,
 
 	ret = rsnd_dma_init(priv,
 			    rsnd_mod_to_dma(mod),
-			    rsnd_info_is_playback(priv, src),
 			    src->info->dma_id);
 	if (ret)
 		goto rsnd_src_probe_gen2_fail;
diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index 9e7b627..57e737c 100644
--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -478,7 +478,6 @@ static int rsnd_ssi_dma_probe(struct rsnd_mod *mod,
 
 	ret = rsnd_dma_init(
 		priv, rsnd_mod_to_dma(mod),
-		rsnd_info_is_playback(priv, ssi),
 		dma_id);
 	if (ret)
 		goto rsnd_ssi_dma_probe_fail;
-- 
1.7.9.5

[PATCH 03/19] ASoC: rsnd: remove unused rsnd_dma_available()

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

rsnd_dma_available() is not used. Let's remove it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 sound/soc/sh/rcar/core.c |    5 -----
 sound/soc/sh/rcar/rsnd.h |    1 -
 sound/soc/sh/rcar/src.c  |    2 --
 sound/soc/sh/rcar/ssi.c  |    2 --
 4 files changed, 10 deletions(-)

diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
index 1edf4dc..1da94bf 100644
--- a/sound/soc/sh/rcar/core.c
+++ b/sound/soc/sh/rcar/core.c
@@ -222,11 +222,6 @@ void rsnd_dma_start(struct rsnd_dma *dma)
 	dma_async_issue_pending(dma->chan);
 }
 
-int rsnd_dma_available(struct rsnd_dma *dma)
-{
-	return !!dma->chan;
-}
-
 #define DMA_NAME_SIZE 16
 #define MOD_MAX 4 /* MEM/SSI/SRC/DVC */
 static int _rsnd_dma_of_name(char *dma_name, struct rsnd_mod *mod)
diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h
index 93a1a25..cb12861a 100644
--- a/sound/soc/sh/rcar/rsnd.h
+++ b/sound/soc/sh/rcar/rsnd.h
@@ -178,7 +178,6 @@ struct rsnd_dma {
 
 void rsnd_dma_start(struct rsnd_dma *dma);
 void rsnd_dma_stop(struct rsnd_dma *dma);
-int rsnd_dma_available(struct rsnd_dma *dma);
 int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id);
 void  rsnd_dma_quit(struct rsnd_priv *priv,
 		    struct rsnd_dma *dma);
diff --git a/sound/soc/sh/rcar/src.c b/sound/soc/sh/rcar/src.c
index 7fb8798..f12c8b3 100644
--- a/sound/soc/sh/rcar/src.c
+++ b/sound/soc/sh/rcar/src.c
@@ -30,8 +30,6 @@ struct rsnd_src {
 #define rsnd_src_convert_rate(p) ((p)->info->convert_rate)
 #define rsnd_mod_to_src(_mod)				\
 	container_of((_mod), struct rsnd_src, mod)
-#define rsnd_src_dma_available(src) \
-	rsnd_dma_available(rsnd_mod_to_dma(&(src)->mod))
 
 #define for_each_rsnd_src(pos, priv, i)				\
 	for ((i) = 0;						\
diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index 57e737c..fcc77ea 100644
--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -80,8 +80,6 @@ struct rsnd_ssi {
 #define rsnd_mod_to_ssi(_mod) container_of((_mod), struct rsnd_ssi, mod)
 #define rsnd_dma_to_ssi(dma)  rsnd_mod_to_ssi(rsnd_dma_to_mod(dma))
 #define rsnd_ssi_pio_available(ssi) ((ssi)->info->irq > 0)
-#define rsnd_ssi_dma_available(ssi) \
-	rsnd_dma_available(rsnd_mod_to_dma(&(ssi)->mod))
 #define rsnd_ssi_clk_from_parent(ssi) ((ssi)->parent)
 #define rsnd_ssi_mode_flags(p) ((p)->info->flags)
 #define rsnd_ssi_dai_id(ssi) ((ssi)->info->dai_id)
-- 
1.7.9.5

[PATCH 04/19] ASoC: rsnd: remove un-needed parameter from rsnd_dma_quit()

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

priv is not used on rsnd_dma_quit()

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 sound/soc/sh/rcar/core.c |    5 ++---
 sound/soc/sh/rcar/rsnd.h |    3 +--
 sound/soc/sh/rcar/src.c  |    2 +-
 sound/soc/sh/rcar/ssi.c  |    2 +-
 4 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
index 1da94bf..7db686d 100644
--- a/sound/soc/sh/rcar/core.c
+++ b/sound/soc/sh/rcar/core.c
@@ -358,7 +358,7 @@ int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id)
 	return 0;
 
 rsnd_dma_init_err:
-	rsnd_dma_quit(priv, dma);
+	rsnd_dma_quit(dma);
 rsnd_dma_channel_err:
 
 	/*
@@ -370,8 +370,7 @@ rsnd_dma_channel_err:
 	return -EAGAIN;
 }
 
-void  rsnd_dma_quit(struct rsnd_priv *priv,
-		    struct rsnd_dma *dma)
+void  rsnd_dma_quit(struct rsnd_dma *dma)
 {
 	if (dma->chan)
 		dma_release_channel(dma->chan);
diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h
index cb12861a..6ee97e7 100644
--- a/sound/soc/sh/rcar/rsnd.h
+++ b/sound/soc/sh/rcar/rsnd.h
@@ -179,8 +179,7 @@ struct rsnd_dma {
 void rsnd_dma_start(struct rsnd_dma *dma);
 void rsnd_dma_stop(struct rsnd_dma *dma);
 int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id);
-void  rsnd_dma_quit(struct rsnd_priv *priv,
-		    struct rsnd_dma *dma);
+void  rsnd_dma_quit(struct rsnd_dma *dma);
 
 
 /*
diff --git a/sound/soc/sh/rcar/src.c b/sound/soc/sh/rcar/src.c
index f12c8b3..e279205 100644
--- a/sound/soc/sh/rcar/src.c
+++ b/sound/soc/sh/rcar/src.c
@@ -730,7 +730,7 @@ rsnd_src_probe_gen2_fail:
 static int rsnd_src_remove_gen2(struct rsnd_mod *mod,
 				struct rsnd_priv *priv)
 {
-	rsnd_dma_quit(priv, rsnd_mod_to_dma(mod));
+	rsnd_dma_quit(rsnd_mod_to_dma(mod));
 
 	return 0;
 }
diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index fcc77ea..a0d902a 100644
--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -499,7 +499,7 @@ 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(priv, rsnd_mod_to_dma(mod));
+	rsnd_dma_quit(rsnd_mod_to_dma(mod));
 
 	/* PIO will request IRQ again */
 	devm_free_irq(dev, irq, ssi);
-- 
1.7.9.5

[PATCH 05/19] ASoC: rsnd: tidyup rsnd_dma_to_mod() macro declaration position

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 sound/soc/sh/rcar/rsnd.h |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h
index 6ee97e7..ec77c9f 100644
--- a/sound/soc/sh/rcar/rsnd.h
+++ b/sound/soc/sh/rcar/rsnd.h
@@ -182,6 +182,8 @@ int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id);
 void  rsnd_dma_quit(struct rsnd_dma *dma);
 
 
+#define rsnd_dma_to_mod(_dma) container_of((_dma), struct rsnd_mod, dma)
+
 /*
  *	R-Car sound mod
  */
@@ -253,7 +255,6 @@ struct rsnd_mod {
 
 #define rsnd_mod_to_priv(mod) (rsnd_io_to_priv(rsnd_mod_to_io(mod)))
 #define rsnd_mod_to_dma(mod) (&(mod)->dma)
-#define rsnd_dma_to_mod(_dma) container_of((_dma), struct rsnd_mod, dma)
 #define rsnd_mod_to_io(mod) ((mod)->io)
 #define rsnd_mod_id(mod) ((mod)->id)
 #define rsnd_mod_hw_start(mod)	clk_prepare_enable((mod)->clk)
-- 
1.7.9.5

[PATCH 06/19] ASoC: rsnd: enable to get resource by name

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

rsnd driver needs to support Audio DMAC peri peri inside sound driver.
getting resource by name is useful for it

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 sound/soc/sh/rcar/gen.c |   23 +++++++++++++----------
 1 file changed, 13 insertions(+), 10 deletions(-)

diff --git a/sound/soc/sh/rcar/gen.c b/sound/soc/sh/rcar/gen.c
index de0685f..d08bcd3 100644
--- a/sound/soc/sh/rcar/gen.c
+++ b/sound/soc/sh/rcar/gen.c
@@ -118,11 +118,12 @@ void rsnd_bset(struct rsnd_priv *priv, struct rsnd_mod *mod,
 				  mask, data);
 }
 
-#define rsnd_gen_regmap_init(priv, id_size, reg_id, conf)		\
-	_rsnd_gen_regmap_init(priv, id_size, reg_id, conf, ARRAY_SIZE(conf))
+#define rsnd_gen_regmap_init(priv, id_size, reg_id, name, conf)		\
+	_rsnd_gen_regmap_init(priv, id_size, reg_id, name, conf, ARRAY_SIZE(conf))
 static int _rsnd_gen_regmap_init(struct rsnd_priv *priv,
 				 int id_size,
 				 int reg_id,
+				 const char *name,
 				 struct rsnd_regmap_field_conf *conf,
 				 int conf_size)
 {
@@ -142,7 +143,9 @@ static int _rsnd_gen_regmap_init(struct rsnd_priv *priv,
 	regc.val_bits = 32;
 	regc.reg_stride = 4;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, reg_id);
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
+	if (!res)
+		res = platform_get_resource(pdev, IORESOURCE_MEM, reg_id);
 	if (!res)
 		return -ENODEV;
 
@@ -368,10 +371,10 @@ static int rsnd_gen2_probe(struct platform_device *pdev,
 	int ret_adg;
 	int ret_ssi;
 
-	ret_ssiu = rsnd_gen_regmap_init(priv, 10, RSND_GEN2_SSIU, conf_ssiu);
-	ret_scu  = rsnd_gen_regmap_init(priv, 10, RSND_GEN2_SCU,  conf_scu);
-	ret_adg  = rsnd_gen_regmap_init(priv, 10, RSND_GEN2_ADG,  conf_adg);
-	ret_ssi  = rsnd_gen_regmap_init(priv, 10, RSND_GEN2_SSI,  conf_ssi);
+	ret_ssiu = rsnd_gen_regmap_init(priv, 10, RSND_GEN2_SSIU, "ssiu", conf_ssiu);
+	ret_scu  = rsnd_gen_regmap_init(priv, 10, RSND_GEN2_SCU,  "scu",  conf_scu);
+	ret_adg  = rsnd_gen_regmap_init(priv, 10, RSND_GEN2_ADG,  "adg",  conf_adg);
+	ret_ssi  = rsnd_gen_regmap_init(priv, 10, RSND_GEN2_SSI,  "ssi",  conf_ssi);
 	if (ret_ssiu < 0 ||
 	    ret_scu  < 0 ||
 	    ret_adg  < 0 ||
@@ -440,9 +443,9 @@ static int rsnd_gen1_probe(struct platform_device *pdev,
 	int ret_adg;
 	int ret_ssi;
 
-	ret_sru  = rsnd_gen_regmap_init(priv, 9, RSND_GEN1_SRU,  conf_sru);
-	ret_adg  = rsnd_gen_regmap_init(priv, 9, RSND_GEN1_ADG,  conf_adg);
-	ret_ssi  = rsnd_gen_regmap_init(priv, 9, RSND_GEN1_SSI,  conf_ssi);
+	ret_sru  = rsnd_gen_regmap_init(priv, 9, RSND_GEN1_SRU, "sru", conf_sru);
+	ret_adg  = rsnd_gen_regmap_init(priv, 9, RSND_GEN1_ADG, "adg", conf_adg);
+	ret_ssi  = rsnd_gen_regmap_init(priv, 9, RSND_GEN1_SSI, "ssi", conf_ssi);
 	if (ret_sru  < 0 ||
 	    ret_adg  < 0 ||
 	    ret_ssi  < 0)
-- 
1.7.9.5

[PATCH 07/19] ASoC: rsnd: add rsnd_gen_get_phy_addr() to get physical address

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

physical address is required from Audio DMAC peri peri.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 sound/soc/sh/rcar/gen.c  |   16 +++++++++++-----
 sound/soc/sh/rcar/rsnd.h |    1 +
 2 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/sound/soc/sh/rcar/gen.c b/sound/soc/sh/rcar/gen.c
index d08bcd3..789de4c 100644
--- a/sound/soc/sh/rcar/gen.c
+++ b/sound/soc/sh/rcar/gen.c
@@ -28,6 +28,7 @@ struct rsnd_gen {
 
 	struct regmap *regmap[RSND_BASE_MAX];
 	struct regmap_field *regs[RSND_REG_MAX];
+	phys_addr_t res[RSND_REG_MAX];
 };
 
 #define rsnd_priv_to_gen(p)	((struct rsnd_gen *)(p)->gen)
@@ -118,6 +119,13 @@ void rsnd_bset(struct rsnd_priv *priv, struct rsnd_mod *mod,
 				  mask, data);
 }
 
+phys_addr_t rsnd_gen_get_phy_addr(struct rsnd_priv *priv, int reg_id)
+{
+	struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
+
+	return 	gen->res[reg_id];
+}
+
 #define rsnd_gen_regmap_init(priv, id_size, reg_id, name, conf)		\
 	_rsnd_gen_regmap_init(priv, id_size, reg_id, name, conf, ARRAY_SIZE(conf))
 static int _rsnd_gen_regmap_init(struct rsnd_priv *priv,
@@ -159,6 +167,7 @@ static int _rsnd_gen_regmap_init(struct rsnd_priv *priv,
 
 	gen->base[reg_id] = base;
 	gen->regmap[reg_id] = regmap;
+	gen->res[reg_id] = res->start;
 
 	for (i = 0; i < conf_size; i++) {
 
@@ -216,13 +225,10 @@ rsnd_gen2_dma_addr(struct rsnd_priv *priv,
 		   struct rsnd_mod *mod,
 		   int is_play, int is_from)
 {
-	struct platform_device *pdev = rsnd_priv_to_pdev(priv);
 	struct device *dev = rsnd_priv_to_dev(priv);
 	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
-	dma_addr_t ssi_reg = platform_get_resource(pdev,
-				IORESOURCE_MEM, RSND_GEN2_SSI)->start;
-	dma_addr_t src_reg = platform_get_resource(pdev,
-				IORESOURCE_MEM, RSND_GEN2_SCU)->start;
+	phys_addr_t ssi_reg = rsnd_gen_get_phy_addr(priv, RSND_GEN2_SSI);
+	phys_addr_t src_reg = rsnd_gen_get_phy_addr(priv, RSND_GEN2_SCU);
 	int is_ssi = !!(rsnd_io_to_mod_ssi(io) = mod);
 	int use_src = !!rsnd_io_to_mod_src(io);
 	int use_dvc = !!rsnd_io_to_mod_dvc(io);
diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h
index ec77c9f..8a8a4d5 100644
--- a/sound/soc/sh/rcar/rsnd.h
+++ b/sound/soc/sh/rcar/rsnd.h
@@ -331,6 +331,7 @@ void __iomem *rsnd_gen_reg_get(struct rsnd_priv *priv,
 dma_addr_t rsnd_gen_dma_addr(struct rsnd_priv *priv,
 		       struct rsnd_mod *mod,
 		       int is_play,  int is_from);
+phys_addr_t rsnd_gen_get_phy_addr(struct rsnd_priv *priv, int reg_id);
 
 #define rsnd_is_gen1(s)		(((s)->info->flags & RSND_GEN_MASK) = RSND_GEN1)
 #define rsnd_is_gen2(s)		(((s)->info->flags & RSND_GEN_MASK) = RSND_GEN2)
-- 
1.7.9.5

[PATCH 07/19] ASoC: rsnd: add rsnd_gen_get_phy_addr() to get physical address

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

physical address is required from Audio DMAC peri peri.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 sound/soc/sh/rcar/gen.c  |   16 +++++++++++-----
 sound/soc/sh/rcar/rsnd.h |    1 +
 2 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/sound/soc/sh/rcar/gen.c b/sound/soc/sh/rcar/gen.c
index d08bcd3..789de4c 100644
--- a/sound/soc/sh/rcar/gen.c
+++ b/sound/soc/sh/rcar/gen.c
@@ -28,6 +28,7 @@ struct rsnd_gen {
 
 	struct regmap *regmap[RSND_BASE_MAX];
 	struct regmap_field *regs[RSND_REG_MAX];
+	phys_addr_t res[RSND_REG_MAX];
 };
 
 #define rsnd_priv_to_gen(p)	((struct rsnd_gen *)(p)->gen)
@@ -118,6 +119,13 @@ void rsnd_bset(struct rsnd_priv *priv, struct rsnd_mod *mod,
 				  mask, data);
 }
 
+phys_addr_t rsnd_gen_get_phy_addr(struct rsnd_priv *priv, int reg_id)
+{
+	struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
+
+	return 	gen->res[reg_id];
+}
+
 #define rsnd_gen_regmap_init(priv, id_size, reg_id, name, conf)		\
 	_rsnd_gen_regmap_init(priv, id_size, reg_id, name, conf, ARRAY_SIZE(conf))
 static int _rsnd_gen_regmap_init(struct rsnd_priv *priv,
@@ -159,6 +167,7 @@ static int _rsnd_gen_regmap_init(struct rsnd_priv *priv,
 
 	gen->base[reg_id] = base;
 	gen->regmap[reg_id] = regmap;
+	gen->res[reg_id] = res->start;
 
 	for (i = 0; i < conf_size; i++) {
 
@@ -216,13 +225,10 @@ rsnd_gen2_dma_addr(struct rsnd_priv *priv,
 		   struct rsnd_mod *mod,
 		   int is_play, int is_from)
 {
-	struct platform_device *pdev = rsnd_priv_to_pdev(priv);
 	struct device *dev = rsnd_priv_to_dev(priv);
 	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
-	dma_addr_t ssi_reg = platform_get_resource(pdev,
-				IORESOURCE_MEM, RSND_GEN2_SSI)->start;
-	dma_addr_t src_reg = platform_get_resource(pdev,
-				IORESOURCE_MEM, RSND_GEN2_SCU)->start;
+	phys_addr_t ssi_reg = rsnd_gen_get_phy_addr(priv, RSND_GEN2_SSI);
+	phys_addr_t src_reg = rsnd_gen_get_phy_addr(priv, RSND_GEN2_SCU);
 	int is_ssi = !!(rsnd_io_to_mod_ssi(io) == mod);
 	int use_src = !!rsnd_io_to_mod_src(io);
 	int use_dvc = !!rsnd_io_to_mod_dvc(io);
diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h
index ec77c9f..8a8a4d5 100644
--- a/sound/soc/sh/rcar/rsnd.h
+++ b/sound/soc/sh/rcar/rsnd.h
@@ -331,6 +331,7 @@ void __iomem *rsnd_gen_reg_get(struct rsnd_priv *priv,
 dma_addr_t rsnd_gen_dma_addr(struct rsnd_priv *priv,
 		       struct rsnd_mod *mod,
 		       int is_play,  int is_from);
+phys_addr_t rsnd_gen_get_phy_addr(struct rsnd_priv *priv, int reg_id);
 
 #define rsnd_is_gen1(s)		(((s)->info->flags & RSND_GEN_MASK) == RSND_GEN1)
 #define rsnd_is_gen2(s)		(((s)->info->flags & RSND_GEN_MASK) == RSND_GEN2)
-- 
1.7.9.5

[PATCH 08/19] ASoC: rsnd: add dma.c for Audio DMAC / Audio DMAC peri peri

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

Renesas sound driver had been assumed that Audio DMAC /
Audio DMAC peri peri are implemented by DMAEngine. But, result of DMA
ML discussion, it was concluded that it is not a general purpose DMAC.
And it should be moved from current DMAEngine to rsnd driver.
So, Audio DMAC peri peri become non DMAEngine.

OTOH, ALSA SoC has soc-generic-dmaengine-pcm implementation. but it
seems difficult to use this generic implementation on rsnd driver at
this point, since it needs to fallback to PIO mode if DMA can't use.
and additionally it needs 2 DMAC (= Audio DMAC / Audio DMAC peri peri).
These are not "generic" feature.

Of course I will try to use this generic dmaengine in the future somehow,
but just use current style at this point until it can formally use 2 DMACs.
This patch adds new dma.c and moves current dma code to dma.c from core.c.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 sound/soc/sh/rcar/Makefile |    2 +-
 sound/soc/sh/rcar/core.c   |  218 -----------------------------------------
 sound/soc/sh/rcar/dma.c    |  231 ++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 232 insertions(+), 219 deletions(-)
 create mode 100644 sound/soc/sh/rcar/dma.c

diff --git a/sound/soc/sh/rcar/Makefile b/sound/soc/sh/rcar/Makefile
index 9ac5364..7b20492 100644
--- a/sound/soc/sh/rcar/Makefile
+++ b/sound/soc/sh/rcar/Makefile
@@ -1,2 +1,2 @@
-snd-soc-rcar-objs	:= core.o gen.o src.o adg.o ssi.o dvc.o
+snd-soc-rcar-objs	:= core.o gen.o dma.o src.o adg.o ssi.o dvc.o
 obj-$(CONFIG_SND_SOC_RCAR)	+= snd-soc-rcar.o
\ No newline at end of file
diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
index 7db686d..9beea9b 100644
--- a/sound/soc/sh/rcar/core.c
+++ b/sound/soc/sh/rcar/core.c
@@ -161,224 +161,6 @@ void rsnd_mod_init(struct rsnd_mod *mod,
 }
 
 /*
- *	rsnd_dma functions
- */
-void rsnd_dma_stop(struct rsnd_dma *dma)
-{
-	dmaengine_terminate_all(dma->chan);
-}
-
-static void rsnd_dma_complete(void *data)
-{
-	struct rsnd_dma *dma = (struct rsnd_dma *)data;
-	struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
-	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
-
-	/*
-	 * Renesas sound Gen1 needs 1 DMAC,
-	 * Gen2 needs 2 DMAC.
-	 * In Gen2 case, it are Audio-DMAC, and Audio-DMAC-peri-peri.
-	 * But, Audio-DMAC-peri-peri doesn't have interrupt,
-	 * and this driver is assuming that here.
-	 *
-	 * If Audio-DMAC-peri-peri has interrpt,
-	 * rsnd_dai_pointer_update() will be called twice,
-	 * ant it will breaks io->byte_pos
-	 */
-
-	rsnd_dai_pointer_update(io, io->byte_per_period);
-}
-
-void rsnd_dma_start(struct rsnd_dma *dma)
-{
-	struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
-	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
-	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
-	struct snd_pcm_substream *substream = io->substream;
-	struct device *dev = rsnd_priv_to_dev(priv);
-	struct dma_async_tx_descriptor *desc;
-
-	desc = dmaengine_prep_dma_cyclic(dma->chan,
-					 (dma->addr) ? dma->addr :
-					 substream->runtime->dma_addr,
-					 snd_pcm_lib_buffer_bytes(substream),
-					 snd_pcm_lib_period_bytes(substream),
-					 dma->dir,
-					 DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
-
-	if (!desc) {
-		dev_err(dev, "dmaengine_prep_slave_sg() fail\n");
-		return;
-	}
-
-	desc->callback		= rsnd_dma_complete;
-	desc->callback_param	= dma;
-
-	if (dmaengine_submit(desc) < 0) {
-		dev_err(dev, "dmaengine_submit() fail\n");
-		return;
-	}
-
-	dma_async_issue_pending(dma->chan);
-}
-
-#define DMA_NAME_SIZE 16
-#define MOD_MAX 4 /* MEM/SSI/SRC/DVC */
-static int _rsnd_dma_of_name(char *dma_name, struct rsnd_mod *mod)
-{
-	if (mod)
-		return snprintf(dma_name, DMA_NAME_SIZE / 2, "%s%d",
-			 rsnd_mod_dma_name(mod), rsnd_mod_id(mod));
-	else
-		return snprintf(dma_name, DMA_NAME_SIZE / 2, "mem");
-
-}
-
-static void rsnd_dma_of_name(struct rsnd_mod *mod_from,
-			     struct rsnd_mod *mod_to,
-			     char *dma_name)
-{
-	int index = 0;
-
-	index = _rsnd_dma_of_name(dma_name + index, mod_from);
-	*(dma_name + index++) = '_';
-	index = _rsnd_dma_of_name(dma_name + index, mod_to);
-}
-
-static void rsnd_dma_of_path(struct rsnd_dma *dma,
-			     int is_play,
-			     struct rsnd_mod **mod_from,
-			     struct rsnd_mod **mod_to)
-{
-	struct rsnd_mod *this = rsnd_dma_to_mod(dma);
-	struct rsnd_dai_stream *io = rsnd_mod_to_io(this);
-	struct rsnd_mod *ssi = rsnd_io_to_mod_ssi(io);
-	struct rsnd_mod *src = rsnd_io_to_mod_src(io);
-	struct rsnd_mod *dvc = rsnd_io_to_mod_dvc(io);
-	struct rsnd_mod *mod[MOD_MAX];
-	int i, index;
-
-
-	for (i = 0; i < MOD_MAX; i++)
-		mod[i] = NULL;
-
-	/*
-	 * in play case...
-	 *
-	 * src -> dst
-	 *
-	 * mem -> SSI
-	 * mem -> SRC -> SSI
-	 * mem -> SRC -> DVC -> SSI
-	 */
-	mod[0] = NULL; /* for "mem" */
-	index = 1;
-	for (i = 1; i < MOD_MAX; i++) {
-		if (!src) {
-			mod[i] = ssi;
-		} else if (!dvc) {
-			mod[i] = src;
-			src = NULL;
-		} else {
-			if ((!is_play) && (this = src))
-				this = dvc;
-
-			mod[i] = (is_play) ? src : dvc;
-			i++;
-			mod[i] = (is_play) ? dvc : src;
-			src = NULL;
-			dvc = NULL;
-		}
-
-		if (mod[i] = this)
-			index = i;
-
-		if (mod[i] = ssi)
-			break;
-	}
-
-	if (is_play) {
-		*mod_from = mod[index - 1];
-		*mod_to   = mod[index];
-	} else {
-		*mod_from = mod[index];
-		*mod_to   = mod[index - 1];
-	}
-}
-
-int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id)
-{
-	struct device *dev = rsnd_priv_to_dev(priv);
-	struct dma_slave_config cfg;
-	struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
-	struct rsnd_mod *mod_from;
-	struct rsnd_mod *mod_to;
-	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
-	int is_play = rsnd_io_is_play(io);
-	char dma_name[DMA_NAME_SIZE];
-	dma_cap_mask_t mask;
-	int ret;
-
-	if (dma->chan) {
-		dev_err(dev, "it already has dma channel\n");
-		return -EIO;
-	}
-
-	dma_cap_zero(mask);
-	dma_cap_set(DMA_SLAVE, mask);
-
-	rsnd_dma_of_path(dma, is_play, &mod_from, &mod_to);
-	rsnd_dma_of_name(mod_from, mod_to, dma_name);
-
-	cfg.slave_id	= id;
-	cfg.direction	= is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM;
-	cfg.src_addr	= rsnd_gen_dma_addr(priv, mod_from, is_play, 1);
-	cfg.dst_addr	= rsnd_gen_dma_addr(priv, mod_to,   is_play, 0);
-	cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
-	cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
-
-	dev_dbg(dev, "dma : %s %pad -> %pad\n",
-		dma_name, &cfg.src_addr, &cfg.dst_addr);
-
-	dma->chan = dma_request_slave_channel_compat(mask, shdma_chan_filter,
-						     (void *)id, dev,
-						     dma_name);
-	if (!dma->chan) {
-		dev_err(dev, "can't get dma channel\n");
-		goto rsnd_dma_channel_err;
-	}
-
-	ret = dmaengine_slave_config(dma->chan, &cfg);
-	if (ret < 0)
-		goto rsnd_dma_init_err;
-
-	dma->addr = is_play ? cfg.src_addr : cfg.dst_addr;
-	dma->dir = is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM;
-
-	return 0;
-
-rsnd_dma_init_err:
-	rsnd_dma_quit(dma);
-rsnd_dma_channel_err:
-
-	/*
-	 * DMA failed. try to PIO mode
-	 * see
-	 *	rsnd_ssi_fallback()
-	 *	rsnd_rdai_continuance_probe()
-	 */
-	return -EAGAIN;
-}
-
-void  rsnd_dma_quit(struct rsnd_dma *dma)
-{
-	if (dma->chan)
-		dma_release_channel(dma->chan);
-
-	dma->chan = NULL;
-}
-
-/*
  *	settting function
  */
 u32 rsnd_get_adinr(struct rsnd_mod *mod)
diff --git a/sound/soc/sh/rcar/dma.c b/sound/soc/sh/rcar/dma.c
new file mode 100644
index 0000000..37acd40
--- /dev/null
+++ b/sound/soc/sh/rcar/dma.c
@@ -0,0 +1,231 @@
+/*
+ * Renesas R-Car Audio DMAC support
+ *
+ * Copyright (C) 2015 Renesas Electronics Corp.
+ * Copyright (c) 2015 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include "rsnd.h"
+
+static void rsnd_dma_complete(void *data)
+{
+	struct rsnd_dma *dma = (struct rsnd_dma *)data;
+	struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
+	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+
+	/*
+	 * Renesas sound Gen1 needs 1 DMAC,
+	 * Gen2 needs 2 DMAC.
+	 * In Gen2 case, it are Audio-DMAC, and Audio-DMAC-peri-peri.
+	 * But, Audio-DMAC-peri-peri doesn't have interrupt,
+	 * and this driver is assuming that here.
+	 *
+	 * If Audio-DMAC-peri-peri has interrpt,
+	 * rsnd_dai_pointer_update() will be called twice,
+	 * ant it will breaks io->byte_pos
+	 */
+
+	rsnd_dai_pointer_update(io, io->byte_per_period);
+}
+
+#define DMA_NAME_SIZE 16
+#define MOD_MAX 4 /* MEM/SSI/SRC/DVC */
+static int _rsnd_dma_of_name(char *dma_name, struct rsnd_mod *mod)
+{
+	if (mod)
+		return snprintf(dma_name, DMA_NAME_SIZE / 2, "%s%d",
+				rsnd_mod_dma_name(mod), rsnd_mod_id(mod));
+	else
+		return snprintf(dma_name, DMA_NAME_SIZE / 2, "mem");
+
+}
+
+static void rsnd_dma_of_name(struct rsnd_mod *mod_from,
+			     struct rsnd_mod *mod_to,
+			     char *dma_name)
+{
+	int index = 0;
+
+	index = _rsnd_dma_of_name(dma_name + index, mod_from);
+	*(dma_name + index++) = '_';
+	index = _rsnd_dma_of_name(dma_name + index, mod_to);
+}
+
+void rsnd_dma_stop(struct rsnd_dma *dma)
+{
+	dmaengine_terminate_all(dma->chan);
+}
+
+void rsnd_dma_start(struct rsnd_dma *dma)
+{
+	struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
+	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+	struct snd_pcm_substream *substream = io->substream;
+	struct device *dev = rsnd_priv_to_dev(priv);
+	struct dma_async_tx_descriptor *desc;
+
+	desc = dmaengine_prep_dma_cyclic(dma->chan,
+					 (dma->addr) ? dma->addr :
+					 substream->runtime->dma_addr,
+					 snd_pcm_lib_buffer_bytes(substream),
+					 snd_pcm_lib_period_bytes(substream),
+					 dma->dir,
+					 DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+
+	if (!desc) {
+		dev_err(dev, "dmaengine_prep_slave_sg() fail\n");
+		return;
+	}
+
+	desc->callback		= rsnd_dma_complete;
+	desc->callback_param	= dma;
+
+	if (dmaengine_submit(desc) < 0) {
+		dev_err(dev, "dmaengine_submit() fail\n");
+		return;
+	}
+
+	dma_async_issue_pending(dma->chan);
+}
+
+static void rsnd_dma_of_path(struct rsnd_dma *dma,
+			     int is_play,
+			     struct rsnd_mod **mod_from,
+			     struct rsnd_mod **mod_to);
+
+int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id)
+{
+	struct device *dev = rsnd_priv_to_dev(priv);
+	struct dma_slave_config cfg = {};
+	struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
+	struct rsnd_mod *mod_from;
+	struct rsnd_mod *mod_to;
+	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+	int is_play = rsnd_io_is_play(io);
+	char dma_name[DMA_NAME_SIZE];
+	dma_cap_mask_t mask;
+	int ret;
+
+	if (dma->chan) {
+		dev_err(dev, "it already has dma channel\n");
+		return -EIO;
+	}
+
+	dma_cap_zero(mask);
+	dma_cap_set(DMA_SLAVE, mask);
+
+	rsnd_dma_of_path(dma, is_play, &mod_from, &mod_to);
+	rsnd_dma_of_name(mod_from, mod_to, dma_name);
+
+	cfg.direction	= is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM;
+	cfg.src_addr	= rsnd_gen_dma_addr(priv, mod_from, is_play, 1);
+	cfg.dst_addr	= rsnd_gen_dma_addr(priv, mod_to,   is_play, 0);
+	cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+	cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+
+	dev_dbg(dev, "dma : %s %pad -> %pad\n",
+		dma_name, &cfg.src_addr, &cfg.dst_addr);
+
+	dma->chan = dma_request_slave_channel_compat(mask, shdma_chan_filter,
+						     (void *)id, dev,
+						     dma_name);
+	if (!dma->chan) {
+		dev_err(dev, "can't get dma channel\n");
+		goto rsnd_dma_channel_err;
+	}
+
+	ret = dmaengine_slave_config(dma->chan, &cfg);
+	if (ret < 0)
+		goto rsnd_dma_init_err;
+
+	dma->addr = is_play ? cfg.src_addr : cfg.dst_addr;
+	dma->dir = is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM;
+
+	return 0;
+
+rsnd_dma_init_err:
+	rsnd_dma_quit(dma);
+rsnd_dma_channel_err:
+
+	/*
+	 * DMA failed. try to PIO mode
+	 * see
+	 *	rsnd_ssi_fallback()
+	 *	rsnd_rdai_continuance_probe()
+	 */
+	return -EAGAIN;
+}
+
+void rsnd_dma_quit(struct rsnd_dma *dma)
+{
+	if (dma->chan)
+		dma_release_channel(dma->chan);
+
+	dma->chan = NULL;
+}
+
+static void rsnd_dma_of_path(struct rsnd_dma *dma,
+			     int is_play,
+			     struct rsnd_mod **mod_from,
+			     struct rsnd_mod **mod_to)
+{
+	struct rsnd_mod *this = rsnd_dma_to_mod(dma);
+	struct rsnd_dai_stream *io = rsnd_mod_to_io(this);
+	struct rsnd_mod *ssi = rsnd_io_to_mod_ssi(io);
+	struct rsnd_mod *src = rsnd_io_to_mod_src(io);
+	struct rsnd_mod *dvc = rsnd_io_to_mod_dvc(io);
+	struct rsnd_mod *mod[MOD_MAX];
+	int i, index;
+
+
+	for (i = 0; i < MOD_MAX; i++)
+		mod[i] = NULL;
+
+	/*
+	 * in play case...
+	 *
+	 * src -> dst
+	 *
+	 * mem -> SSI
+	 * mem -> SRC -> SSI
+	 * mem -> SRC -> DVC -> SSI
+	 */
+	mod[0] = NULL; /* for "mem" */
+	index = 1;
+	for (i = 1; i < MOD_MAX; i++) {
+		if (!src) {
+			mod[i] = ssi;
+		} else if (!dvc) {
+			mod[i] = src;
+			src = NULL;
+		} else {
+			if ((!is_play) && (this = src))
+				this = dvc;
+
+			mod[i] = (is_play) ? src : dvc;
+			i++;
+			mod[i] = (is_play) ? dvc : src;
+			src = NULL;
+			dvc = NULL;
+		}
+
+		if (mod[i] = this)
+			index = i;
+
+		if (mod[i] = ssi)
+			break;
+	}
+
+	if (is_play) {
+		*mod_from = mod[index - 1];
+		*mod_to   = mod[index];
+	} else {
+		*mod_from = mod[index];
+		*mod_to   = mod[index - 1];
+	}
+}
+
-- 
1.7.9.5

[PATCH 08/19] ASoC: rsnd: add dma.c for Audio DMAC / Audio DMAC peri peri

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

Renesas sound driver had been assumed that Audio DMAC /
Audio DMAC peri peri are implemented by DMAEngine. But, result of DMA
ML discussion, it was concluded that it is not a general purpose DMAC.
And it should be moved from current DMAEngine to rsnd driver.
So, Audio DMAC peri peri become non DMAEngine.

OTOH, ALSA SoC has soc-generic-dmaengine-pcm implementation. but it
seems difficult to use this generic implementation on rsnd driver at
this point, since it needs to fallback to PIO mode if DMA can't use.
and additionally it needs 2 DMAC (= Audio DMAC / Audio DMAC peri peri).
These are not "generic" feature.

Of course I will try to use this generic dmaengine in the future somehow,
but just use current style at this point until it can formally use 2 DMACs.
This patch adds new dma.c and moves current dma code to dma.c from core.c.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 sound/soc/sh/rcar/Makefile |    2 +-
 sound/soc/sh/rcar/core.c   |  218 -----------------------------------------
 sound/soc/sh/rcar/dma.c    |  231 ++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 232 insertions(+), 219 deletions(-)
 create mode 100644 sound/soc/sh/rcar/dma.c

diff --git a/sound/soc/sh/rcar/Makefile b/sound/soc/sh/rcar/Makefile
index 9ac5364..7b20492 100644
--- a/sound/soc/sh/rcar/Makefile
+++ b/sound/soc/sh/rcar/Makefile
@@ -1,2 +1,2 @@
-snd-soc-rcar-objs	:= core.o gen.o src.o adg.o ssi.o dvc.o
+snd-soc-rcar-objs	:= core.o gen.o dma.o src.o adg.o ssi.o dvc.o
 obj-$(CONFIG_SND_SOC_RCAR)	+= snd-soc-rcar.o
\ No newline at end of file
diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
index 7db686d..9beea9b 100644
--- a/sound/soc/sh/rcar/core.c
+++ b/sound/soc/sh/rcar/core.c
@@ -161,224 +161,6 @@ void rsnd_mod_init(struct rsnd_mod *mod,
 }
 
 /*
- *	rsnd_dma functions
- */
-void rsnd_dma_stop(struct rsnd_dma *dma)
-{
-	dmaengine_terminate_all(dma->chan);
-}
-
-static void rsnd_dma_complete(void *data)
-{
-	struct rsnd_dma *dma = (struct rsnd_dma *)data;
-	struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
-	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
-
-	/*
-	 * Renesas sound Gen1 needs 1 DMAC,
-	 * Gen2 needs 2 DMAC.
-	 * In Gen2 case, it are Audio-DMAC, and Audio-DMAC-peri-peri.
-	 * But, Audio-DMAC-peri-peri doesn't have interrupt,
-	 * and this driver is assuming that here.
-	 *
-	 * If Audio-DMAC-peri-peri has interrpt,
-	 * rsnd_dai_pointer_update() will be called twice,
-	 * ant it will breaks io->byte_pos
-	 */
-
-	rsnd_dai_pointer_update(io, io->byte_per_period);
-}
-
-void rsnd_dma_start(struct rsnd_dma *dma)
-{
-	struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
-	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
-	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
-	struct snd_pcm_substream *substream = io->substream;
-	struct device *dev = rsnd_priv_to_dev(priv);
-	struct dma_async_tx_descriptor *desc;
-
-	desc = dmaengine_prep_dma_cyclic(dma->chan,
-					 (dma->addr) ? dma->addr :
-					 substream->runtime->dma_addr,
-					 snd_pcm_lib_buffer_bytes(substream),
-					 snd_pcm_lib_period_bytes(substream),
-					 dma->dir,
-					 DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
-
-	if (!desc) {
-		dev_err(dev, "dmaengine_prep_slave_sg() fail\n");
-		return;
-	}
-
-	desc->callback		= rsnd_dma_complete;
-	desc->callback_param	= dma;
-
-	if (dmaengine_submit(desc) < 0) {
-		dev_err(dev, "dmaengine_submit() fail\n");
-		return;
-	}
-
-	dma_async_issue_pending(dma->chan);
-}
-
-#define DMA_NAME_SIZE 16
-#define MOD_MAX 4 /* MEM/SSI/SRC/DVC */
-static int _rsnd_dma_of_name(char *dma_name, struct rsnd_mod *mod)
-{
-	if (mod)
-		return snprintf(dma_name, DMA_NAME_SIZE / 2, "%s%d",
-			 rsnd_mod_dma_name(mod), rsnd_mod_id(mod));
-	else
-		return snprintf(dma_name, DMA_NAME_SIZE / 2, "mem");
-
-}
-
-static void rsnd_dma_of_name(struct rsnd_mod *mod_from,
-			     struct rsnd_mod *mod_to,
-			     char *dma_name)
-{
-	int index = 0;
-
-	index = _rsnd_dma_of_name(dma_name + index, mod_from);
-	*(dma_name + index++) = '_';
-	index = _rsnd_dma_of_name(dma_name + index, mod_to);
-}
-
-static void rsnd_dma_of_path(struct rsnd_dma *dma,
-			     int is_play,
-			     struct rsnd_mod **mod_from,
-			     struct rsnd_mod **mod_to)
-{
-	struct rsnd_mod *this = rsnd_dma_to_mod(dma);
-	struct rsnd_dai_stream *io = rsnd_mod_to_io(this);
-	struct rsnd_mod *ssi = rsnd_io_to_mod_ssi(io);
-	struct rsnd_mod *src = rsnd_io_to_mod_src(io);
-	struct rsnd_mod *dvc = rsnd_io_to_mod_dvc(io);
-	struct rsnd_mod *mod[MOD_MAX];
-	int i, index;
-
-
-	for (i = 0; i < MOD_MAX; i++)
-		mod[i] = NULL;
-
-	/*
-	 * in play case...
-	 *
-	 * src -> dst
-	 *
-	 * mem -> SSI
-	 * mem -> SRC -> SSI
-	 * mem -> SRC -> DVC -> SSI
-	 */
-	mod[0] = NULL; /* for "mem" */
-	index = 1;
-	for (i = 1; i < MOD_MAX; i++) {
-		if (!src) {
-			mod[i] = ssi;
-		} else if (!dvc) {
-			mod[i] = src;
-			src = NULL;
-		} else {
-			if ((!is_play) && (this == src))
-				this = dvc;
-
-			mod[i] = (is_play) ? src : dvc;
-			i++;
-			mod[i] = (is_play) ? dvc : src;
-			src = NULL;
-			dvc = NULL;
-		}
-
-		if (mod[i] == this)
-			index = i;
-
-		if (mod[i] == ssi)
-			break;
-	}
-
-	if (is_play) {
-		*mod_from = mod[index - 1];
-		*mod_to   = mod[index];
-	} else {
-		*mod_from = mod[index];
-		*mod_to   = mod[index - 1];
-	}
-}
-
-int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id)
-{
-	struct device *dev = rsnd_priv_to_dev(priv);
-	struct dma_slave_config cfg;
-	struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
-	struct rsnd_mod *mod_from;
-	struct rsnd_mod *mod_to;
-	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
-	int is_play = rsnd_io_is_play(io);
-	char dma_name[DMA_NAME_SIZE];
-	dma_cap_mask_t mask;
-	int ret;
-
-	if (dma->chan) {
-		dev_err(dev, "it already has dma channel\n");
-		return -EIO;
-	}
-
-	dma_cap_zero(mask);
-	dma_cap_set(DMA_SLAVE, mask);
-
-	rsnd_dma_of_path(dma, is_play, &mod_from, &mod_to);
-	rsnd_dma_of_name(mod_from, mod_to, dma_name);
-
-	cfg.slave_id	= id;
-	cfg.direction	= is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM;
-	cfg.src_addr	= rsnd_gen_dma_addr(priv, mod_from, is_play, 1);
-	cfg.dst_addr	= rsnd_gen_dma_addr(priv, mod_to,   is_play, 0);
-	cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
-	cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
-
-	dev_dbg(dev, "dma : %s %pad -> %pad\n",
-		dma_name, &cfg.src_addr, &cfg.dst_addr);
-
-	dma->chan = dma_request_slave_channel_compat(mask, shdma_chan_filter,
-						     (void *)id, dev,
-						     dma_name);
-	if (!dma->chan) {
-		dev_err(dev, "can't get dma channel\n");
-		goto rsnd_dma_channel_err;
-	}
-
-	ret = dmaengine_slave_config(dma->chan, &cfg);
-	if (ret < 0)
-		goto rsnd_dma_init_err;
-
-	dma->addr = is_play ? cfg.src_addr : cfg.dst_addr;
-	dma->dir = is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM;
-
-	return 0;
-
-rsnd_dma_init_err:
-	rsnd_dma_quit(dma);
-rsnd_dma_channel_err:
-
-	/*
-	 * DMA failed. try to PIO mode
-	 * see
-	 *	rsnd_ssi_fallback()
-	 *	rsnd_rdai_continuance_probe()
-	 */
-	return -EAGAIN;
-}
-
-void  rsnd_dma_quit(struct rsnd_dma *dma)
-{
-	if (dma->chan)
-		dma_release_channel(dma->chan);
-
-	dma->chan = NULL;
-}
-
-/*
  *	settting function
  */
 u32 rsnd_get_adinr(struct rsnd_mod *mod)
diff --git a/sound/soc/sh/rcar/dma.c b/sound/soc/sh/rcar/dma.c
new file mode 100644
index 0000000..37acd40
--- /dev/null
+++ b/sound/soc/sh/rcar/dma.c
@@ -0,0 +1,231 @@
+/*
+ * Renesas R-Car Audio DMAC support
+ *
+ * Copyright (C) 2015 Renesas Electronics Corp.
+ * Copyright (c) 2015 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include "rsnd.h"
+
+static void rsnd_dma_complete(void *data)
+{
+	struct rsnd_dma *dma = (struct rsnd_dma *)data;
+	struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
+	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+
+	/*
+	 * Renesas sound Gen1 needs 1 DMAC,
+	 * Gen2 needs 2 DMAC.
+	 * In Gen2 case, it are Audio-DMAC, and Audio-DMAC-peri-peri.
+	 * But, Audio-DMAC-peri-peri doesn't have interrupt,
+	 * and this driver is assuming that here.
+	 *
+	 * If Audio-DMAC-peri-peri has interrpt,
+	 * rsnd_dai_pointer_update() will be called twice,
+	 * ant it will breaks io->byte_pos
+	 */
+
+	rsnd_dai_pointer_update(io, io->byte_per_period);
+}
+
+#define DMA_NAME_SIZE 16
+#define MOD_MAX 4 /* MEM/SSI/SRC/DVC */
+static int _rsnd_dma_of_name(char *dma_name, struct rsnd_mod *mod)
+{
+	if (mod)
+		return snprintf(dma_name, DMA_NAME_SIZE / 2, "%s%d",
+				rsnd_mod_dma_name(mod), rsnd_mod_id(mod));
+	else
+		return snprintf(dma_name, DMA_NAME_SIZE / 2, "mem");
+
+}
+
+static void rsnd_dma_of_name(struct rsnd_mod *mod_from,
+			     struct rsnd_mod *mod_to,
+			     char *dma_name)
+{
+	int index = 0;
+
+	index = _rsnd_dma_of_name(dma_name + index, mod_from);
+	*(dma_name + index++) = '_';
+	index = _rsnd_dma_of_name(dma_name + index, mod_to);
+}
+
+void rsnd_dma_stop(struct rsnd_dma *dma)
+{
+	dmaengine_terminate_all(dma->chan);
+}
+
+void rsnd_dma_start(struct rsnd_dma *dma)
+{
+	struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
+	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+	struct snd_pcm_substream *substream = io->substream;
+	struct device *dev = rsnd_priv_to_dev(priv);
+	struct dma_async_tx_descriptor *desc;
+
+	desc = dmaengine_prep_dma_cyclic(dma->chan,
+					 (dma->addr) ? dma->addr :
+					 substream->runtime->dma_addr,
+					 snd_pcm_lib_buffer_bytes(substream),
+					 snd_pcm_lib_period_bytes(substream),
+					 dma->dir,
+					 DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+
+	if (!desc) {
+		dev_err(dev, "dmaengine_prep_slave_sg() fail\n");
+		return;
+	}
+
+	desc->callback		= rsnd_dma_complete;
+	desc->callback_param	= dma;
+
+	if (dmaengine_submit(desc) < 0) {
+		dev_err(dev, "dmaengine_submit() fail\n");
+		return;
+	}
+
+	dma_async_issue_pending(dma->chan);
+}
+
+static void rsnd_dma_of_path(struct rsnd_dma *dma,
+			     int is_play,
+			     struct rsnd_mod **mod_from,
+			     struct rsnd_mod **mod_to);
+
+int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id)
+{
+	struct device *dev = rsnd_priv_to_dev(priv);
+	struct dma_slave_config cfg = {};
+	struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
+	struct rsnd_mod *mod_from;
+	struct rsnd_mod *mod_to;
+	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+	int is_play = rsnd_io_is_play(io);
+	char dma_name[DMA_NAME_SIZE];
+	dma_cap_mask_t mask;
+	int ret;
+
+	if (dma->chan) {
+		dev_err(dev, "it already has dma channel\n");
+		return -EIO;
+	}
+
+	dma_cap_zero(mask);
+	dma_cap_set(DMA_SLAVE, mask);
+
+	rsnd_dma_of_path(dma, is_play, &mod_from, &mod_to);
+	rsnd_dma_of_name(mod_from, mod_to, dma_name);
+
+	cfg.direction	= is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM;
+	cfg.src_addr	= rsnd_gen_dma_addr(priv, mod_from, is_play, 1);
+	cfg.dst_addr	= rsnd_gen_dma_addr(priv, mod_to,   is_play, 0);
+	cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+	cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+
+	dev_dbg(dev, "dma : %s %pad -> %pad\n",
+		dma_name, &cfg.src_addr, &cfg.dst_addr);
+
+	dma->chan = dma_request_slave_channel_compat(mask, shdma_chan_filter,
+						     (void *)id, dev,
+						     dma_name);
+	if (!dma->chan) {
+		dev_err(dev, "can't get dma channel\n");
+		goto rsnd_dma_channel_err;
+	}
+
+	ret = dmaengine_slave_config(dma->chan, &cfg);
+	if (ret < 0)
+		goto rsnd_dma_init_err;
+
+	dma->addr = is_play ? cfg.src_addr : cfg.dst_addr;
+	dma->dir = is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM;
+
+	return 0;
+
+rsnd_dma_init_err:
+	rsnd_dma_quit(dma);
+rsnd_dma_channel_err:
+
+	/*
+	 * DMA failed. try to PIO mode
+	 * see
+	 *	rsnd_ssi_fallback()
+	 *	rsnd_rdai_continuance_probe()
+	 */
+	return -EAGAIN;
+}
+
+void rsnd_dma_quit(struct rsnd_dma *dma)
+{
+	if (dma->chan)
+		dma_release_channel(dma->chan);
+
+	dma->chan = NULL;
+}
+
+static void rsnd_dma_of_path(struct rsnd_dma *dma,
+			     int is_play,
+			     struct rsnd_mod **mod_from,
+			     struct rsnd_mod **mod_to)
+{
+	struct rsnd_mod *this = rsnd_dma_to_mod(dma);
+	struct rsnd_dai_stream *io = rsnd_mod_to_io(this);
+	struct rsnd_mod *ssi = rsnd_io_to_mod_ssi(io);
+	struct rsnd_mod *src = rsnd_io_to_mod_src(io);
+	struct rsnd_mod *dvc = rsnd_io_to_mod_dvc(io);
+	struct rsnd_mod *mod[MOD_MAX];
+	int i, index;
+
+
+	for (i = 0; i < MOD_MAX; i++)
+		mod[i] = NULL;
+
+	/*
+	 * in play case...
+	 *
+	 * src -> dst
+	 *
+	 * mem -> SSI
+	 * mem -> SRC -> SSI
+	 * mem -> SRC -> DVC -> SSI
+	 */
+	mod[0] = NULL; /* for "mem" */
+	index = 1;
+	for (i = 1; i < MOD_MAX; i++) {
+		if (!src) {
+			mod[i] = ssi;
+		} else if (!dvc) {
+			mod[i] = src;
+			src = NULL;
+		} else {
+			if ((!is_play) && (this == src))
+				this = dvc;
+
+			mod[i] = (is_play) ? src : dvc;
+			i++;
+			mod[i] = (is_play) ? dvc : src;
+			src = NULL;
+			dvc = NULL;
+		}
+
+		if (mod[i] == this)
+			index = i;
+
+		if (mod[i] == ssi)
+			break;
+	}
+
+	if (is_play) {
+		*mod_from = mod[index - 1];
+		*mod_to   = mod[index];
+	} else {
+		*mod_from = mod[index];
+		*mod_to   = mod[index - 1];
+	}
+}
+
-- 
1.7.9.5

[PATCH 09/19] ASoC: rsnd: move rsnd_gen_dma_addr() from gen.c to dma.c

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

Now, we have dma.c for Audio DMAC / Audio DMAC peri peri.
rsnd_gen_dma_addr() should go there.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 sound/soc/sh/rcar/dma.c  |  118 +++++++++++++++++++++++++++++++++++++++++++++-
 sound/soc/sh/rcar/gen.c  |  110 ------------------------------------------
 sound/soc/sh/rcar/rsnd.h |    3 --
 3 files changed, 116 insertions(+), 115 deletions(-)

diff --git a/sound/soc/sh/rcar/dma.c b/sound/soc/sh/rcar/dma.c
index 37acd40..9f909f1 100644
--- a/sound/soc/sh/rcar/dma.c
+++ b/sound/soc/sh/rcar/dma.c
@@ -97,6 +97,10 @@ static void rsnd_dma_of_path(struct rsnd_dma *dma,
 			     struct rsnd_mod **mod_from,
 			     struct rsnd_mod **mod_to);
 
+static dma_addr_t rsnd_dma_addr(struct rsnd_priv *priv,
+				struct rsnd_mod *mod,
+				int is_play, int is_from);
+
 int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id)
 {
 	struct device *dev = rsnd_priv_to_dev(priv);
@@ -122,8 +126,8 @@ int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id)
 	rsnd_dma_of_name(mod_from, mod_to, dma_name);
 
 	cfg.direction	= is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM;
-	cfg.src_addr	= rsnd_gen_dma_addr(priv, mod_from, is_play, 1);
-	cfg.dst_addr	= rsnd_gen_dma_addr(priv, mod_to,   is_play, 0);
+	cfg.src_addr	= rsnd_dma_addr(priv, mod_from, is_play, 1);
+	cfg.dst_addr	= rsnd_dma_addr(priv, mod_to,   is_play, 0);
 	cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
 	cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
 
@@ -168,6 +172,116 @@ void rsnd_dma_quit(struct rsnd_dma *dma)
 	dma->chan = NULL;
 }
 
+/*
+ *	DMA read/write register offset
+ *
+ *	RSND_xxx_I_N	for Audio DMAC input
+ *	RSND_xxx_O_N	for Audio DMAC output
+ *	RSND_xxx_I_P	for Audio DMAC peri peri input
+ *	RSND_xxx_O_P	for Audio DMAC peri peri output
+ *
+ *	ex) R-Car H2 case
+ *	      mod        / DMAC in    / DMAC out   / DMAC PP in / DMAC pp out
+ *	SSI : 0xec541000 / 0xec241008 / 0xec24100c
+ *	SSIU: 0xec541000 / 0xec100000 / 0xec100000 / 0xec400000 / 0xec400000
+ *	SCU : 0xec500000 / 0xec000000 / 0xec004000 / 0xec300000 / 0xec304000
+ *	CMD : 0xec500000 /            / 0xec008000                0xec308000
+ */
+#define RDMA_SSI_I_N(addr, i)	(addr ##_reg - 0x00300000 + (0x40 * i) + 0x8)
+#define RDMA_SSI_O_N(addr, i)	(addr ##_reg - 0x00300000 + (0x40 * i) + 0xc)
+
+#define RDMA_SSIU_I_N(addr, i)	(addr ##_reg - 0x00441000 + (0x1000 * i))
+#define RDMA_SSIU_O_N(addr, i)	(addr ##_reg - 0x00441000 + (0x1000 * i))
+
+#define RDMA_SSIU_I_P(addr, i)	(addr ##_reg - 0x00141000 + (0x1000 * i))
+#define RDMA_SSIU_O_P(addr, i)	(addr ##_reg - 0x00141000 + (0x1000 * i))
+
+#define RDMA_SRC_I_N(addr, i)	(addr ##_reg - 0x00500000 + (0x400 * i))
+#define RDMA_SRC_O_N(addr, i)	(addr ##_reg - 0x004fc000 + (0x400 * i))
+
+#define RDMA_SRC_I_P(addr, i)	(addr ##_reg - 0x00200000 + (0x400 * i))
+#define RDMA_SRC_O_P(addr, i)	(addr ##_reg - 0x001fc000 + (0x400 * i))
+
+#define RDMA_CMD_O_N(addr, i)	(addr ##_reg - 0x004f8000 + (0x400 * i))
+#define RDMA_CMD_O_P(addr, i)	(addr ##_reg - 0x001f8000 + (0x400 * i))
+
+static dma_addr_t
+rsnd_gen2_dma_addr(struct rsnd_priv *priv,
+		   struct rsnd_mod *mod,
+		   int is_play, int is_from)
+{
+	struct device *dev = rsnd_priv_to_dev(priv);
+	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+	phys_addr_t ssi_reg = rsnd_gen_get_phy_addr(priv, RSND_GEN2_SSI);
+	phys_addr_t src_reg = rsnd_gen_get_phy_addr(priv, RSND_GEN2_SCU);
+	int is_ssi = !!(rsnd_io_to_mod_ssi(io) = mod);
+	int use_src = !!rsnd_io_to_mod_src(io);
+	int use_dvc = !!rsnd_io_to_mod_dvc(io);
+	int id = rsnd_mod_id(mod);
+	struct dma_addr {
+		dma_addr_t out_addr;
+		dma_addr_t in_addr;
+	} dma_addrs[3][2][3] = {
+		/* SRC */
+		{{{ 0,				0 },
+		  /* Capture */
+		  { RDMA_SRC_O_N(src, id),	RDMA_SRC_I_P(src, id) },
+		  { RDMA_CMD_O_N(src, id),	RDMA_SRC_I_P(src, id) } },
+		 /* Playback */
+		 {{ 0,				0, },
+		  { RDMA_SRC_O_P(src, id),	RDMA_SRC_I_N(src, id) },
+		  { RDMA_CMD_O_P(src, id),	RDMA_SRC_I_N(src, id) } }
+		},
+		/* SSI */
+		/* Capture */
+		{{{ RDMA_SSI_O_N(ssi, id),	0 },
+		  { RDMA_SSIU_O_P(ssi, id),	0 },
+		  { RDMA_SSIU_O_P(ssi, id),	0 } },
+		 /* Playback */
+		 {{ 0,				RDMA_SSI_I_N(ssi, id) },
+		  { 0,				RDMA_SSIU_I_P(ssi, id) },
+		  { 0,				RDMA_SSIU_I_P(ssi, id) } }
+		},
+		/* SSIU */
+		/* Capture */
+		{{{ RDMA_SSIU_O_N(ssi, id),	0 },
+		  { RDMA_SSIU_O_P(ssi, id),	0 },
+		  { RDMA_SSIU_O_P(ssi, id),	0 } },
+		 /* Playback */
+		 {{ 0,				RDMA_SSIU_I_N(ssi, id) },
+		  { 0,				RDMA_SSIU_I_P(ssi, id) },
+		  { 0,				RDMA_SSIU_I_P(ssi, id) } } },
+	};
+
+	/* it shouldn't happen */
+	if (use_dvc && !use_src)
+		dev_err(dev, "DVC is selected without SRC\n");
+
+	/* use SSIU or SSI ? */
+	if (is_ssi && (0 = strcmp(rsnd_mod_dma_name(mod), "ssiu")))
+		is_ssi++;
+
+	return (is_from) ?
+		dma_addrs[is_ssi][is_play][use_src + use_dvc].out_addr :
+		dma_addrs[is_ssi][is_play][use_src + use_dvc].in_addr;
+}
+
+static dma_addr_t rsnd_dma_addr(struct rsnd_priv *priv,
+				struct rsnd_mod *mod,
+				int is_play, int is_from)
+{
+	/*
+	 * gen1 uses default DMA addr
+	 */
+	if (rsnd_is_gen1(priv))
+		return 0;
+
+	if (!mod)
+		return 0;
+
+	return rsnd_gen2_dma_addr(priv, mod, is_play, is_from);
+}
+
 static void rsnd_dma_of_path(struct rsnd_dma *dma,
 			     int is_play,
 			     struct rsnd_mod **mod_from,
diff --git a/sound/soc/sh/rcar/gen.c b/sound/soc/sh/rcar/gen.c
index 789de4c..5863a61 100644
--- a/sound/soc/sh/rcar/gen.c
+++ b/sound/soc/sh/rcar/gen.c
@@ -188,116 +188,6 @@ static int _rsnd_gen_regmap_init(struct rsnd_priv *priv,
 }
 
 /*
- *	DMA read/write register offset
- *
- *	RSND_xxx_I_N	for Audio DMAC input
- *	RSND_xxx_O_N	for Audio DMAC output
- *	RSND_xxx_I_P	for Audio DMAC peri peri input
- *	RSND_xxx_O_P	for Audio DMAC peri peri output
- *
- *	ex) R-Car H2 case
- *	      mod        / DMAC in    / DMAC out   / DMAC PP in / DMAC pp out
- *	SSI : 0xec541000 / 0xec241008 / 0xec24100c
- *	SSIU: 0xec541000 / 0xec100000 / 0xec100000 / 0xec400000 / 0xec400000
- *	SCU : 0xec500000 / 0xec000000 / 0xec004000 / 0xec300000 / 0xec304000
- *	CMD : 0xec500000 /            / 0xec008000                0xec308000
- */
-#define RDMA_SSI_I_N(addr, i)	(addr ##_reg - 0x00300000 + (0x40 * i) + 0x8)
-#define RDMA_SSI_O_N(addr, i)	(addr ##_reg - 0x00300000 + (0x40 * i) + 0xc)
-
-#define RDMA_SSIU_I_N(addr, i)	(addr ##_reg - 0x00441000 + (0x1000 * i))
-#define RDMA_SSIU_O_N(addr, i)	(addr ##_reg - 0x00441000 + (0x1000 * i))
-
-#define RDMA_SSIU_I_P(addr, i)	(addr ##_reg - 0x00141000 + (0x1000 * i))
-#define RDMA_SSIU_O_P(addr, i)	(addr ##_reg - 0x00141000 + (0x1000 * i))
-
-#define RDMA_SRC_I_N(addr, i)	(addr ##_reg - 0x00500000 + (0x400 * i))
-#define RDMA_SRC_O_N(addr, i)	(addr ##_reg - 0x004fc000 + (0x400 * i))
-
-#define RDMA_SRC_I_P(addr, i)	(addr ##_reg - 0x00200000 + (0x400 * i))
-#define RDMA_SRC_O_P(addr, i)	(addr ##_reg - 0x001fc000 + (0x400 * i))
-
-#define RDMA_CMD_O_N(addr, i)	(addr ##_reg - 0x004f8000 + (0x400 * i))
-#define RDMA_CMD_O_P(addr, i)	(addr ##_reg - 0x001f8000 + (0x400 * i))
-
-static dma_addr_t
-rsnd_gen2_dma_addr(struct rsnd_priv *priv,
-		   struct rsnd_mod *mod,
-		   int is_play, int is_from)
-{
-	struct device *dev = rsnd_priv_to_dev(priv);
-	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
-	phys_addr_t ssi_reg = rsnd_gen_get_phy_addr(priv, RSND_GEN2_SSI);
-	phys_addr_t src_reg = rsnd_gen_get_phy_addr(priv, RSND_GEN2_SCU);
-	int is_ssi = !!(rsnd_io_to_mod_ssi(io) = mod);
-	int use_src = !!rsnd_io_to_mod_src(io);
-	int use_dvc = !!rsnd_io_to_mod_dvc(io);
-	int id = rsnd_mod_id(mod);
-	struct dma_addr {
-		dma_addr_t out_addr;
-		dma_addr_t in_addr;
-	} dma_addrs[3][2][3] = {
-		/* SRC */
-		{{{ 0,				0 },
-		/* Capture */
-		  { RDMA_SRC_O_N(src, id),	RDMA_SRC_I_P(src, id) },
-		  { RDMA_CMD_O_N(src, id),	RDMA_SRC_I_P(src, id) } },
-		 /* Playback */
-		 {{ 0,				0, },
-		  { RDMA_SRC_O_P(src, id),	RDMA_SRC_I_N(src, id) },
-		  { RDMA_CMD_O_P(src, id),	RDMA_SRC_I_N(src, id) } }
-		},
-		/* SSI */
-		/* Capture */
-		{{{ RDMA_SSI_O_N(ssi, id),	0 },
-		  { RDMA_SSIU_O_P(ssi, id),	0 },
-		  { RDMA_SSIU_O_P(ssi, id),	0 } },
-		 /* Playback */
-		 {{ 0,				RDMA_SSI_I_N(ssi, id) },
-		  { 0,				RDMA_SSIU_I_P(ssi, id) },
-		  { 0,				RDMA_SSIU_I_P(ssi, id) } }
-		},
-		/* SSIU */
-		/* Capture */
-		{{{ RDMA_SSIU_O_N(ssi, id),	0 },
-		  { RDMA_SSIU_O_P(ssi, id),	0 },
-		  { RDMA_SSIU_O_P(ssi, id),	0 } },
-		 /* Playback */
-		 {{ 0,				RDMA_SSIU_I_N(ssi, id) },
-		  { 0,				RDMA_SSIU_I_P(ssi, id) },
-		  { 0,				RDMA_SSIU_I_P(ssi, id) } } },
-	};
-
-	/* it shouldn't happen */
-	if (use_dvc && !use_src)
-		dev_err(dev, "DVC is selected without SRC\n");
-
-	/* use SSIU or SSI ? */
-	if (is_ssi && (0 = strcmp(rsnd_mod_dma_name(mod), "ssiu")))
-		is_ssi++;
-
-	return (is_from) ?
-		dma_addrs[is_ssi][is_play][use_src + use_dvc].out_addr :
-		dma_addrs[is_ssi][is_play][use_src + use_dvc].in_addr;
-}
-
-dma_addr_t rsnd_gen_dma_addr(struct rsnd_priv *priv,
-			     struct rsnd_mod *mod,
-			     int is_play, int is_from)
-{
-	/*
-	 * gen1 uses default DMA addr
-	 */
-	if (rsnd_is_gen1(priv))
-		return 0;
-
-	if (!mod)
-		return 0;
-
-	return rsnd_gen2_dma_addr(priv, mod, is_play, is_from);
-}
-
-/*
  *		Gen2
  */
 static int rsnd_gen2_probe(struct platform_device *pdev,
diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h
index 8a8a4d5..a73e94c 100644
--- a/sound/soc/sh/rcar/rsnd.h
+++ b/sound/soc/sh/rcar/rsnd.h
@@ -328,9 +328,6 @@ int rsnd_gen_probe(struct platform_device *pdev,
 void __iomem *rsnd_gen_reg_get(struct rsnd_priv *priv,
 			       struct rsnd_mod *mod,
 			       enum rsnd_reg reg);
-dma_addr_t rsnd_gen_dma_addr(struct rsnd_priv *priv,
-		       struct rsnd_mod *mod,
-		       int is_play,  int is_from);
 phys_addr_t rsnd_gen_get_phy_addr(struct rsnd_priv *priv, int reg_id);
 
 #define rsnd_is_gen1(s)		(((s)->info->flags & RSND_GEN_MASK) = RSND_GEN1)
-- 
1.7.9.5

[PATCH 09/19] ASoC: rsnd: move rsnd_gen_dma_addr() from gen.c to dma.c

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

Now, we have dma.c for Audio DMAC / Audio DMAC peri peri.
rsnd_gen_dma_addr() should go there.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 sound/soc/sh/rcar/dma.c  |  118 +++++++++++++++++++++++++++++++++++++++++++++-
 sound/soc/sh/rcar/gen.c  |  110 ------------------------------------------
 sound/soc/sh/rcar/rsnd.h |    3 --
 3 files changed, 116 insertions(+), 115 deletions(-)

diff --git a/sound/soc/sh/rcar/dma.c b/sound/soc/sh/rcar/dma.c
index 37acd40..9f909f1 100644
--- a/sound/soc/sh/rcar/dma.c
+++ b/sound/soc/sh/rcar/dma.c
@@ -97,6 +97,10 @@ static void rsnd_dma_of_path(struct rsnd_dma *dma,
 			     struct rsnd_mod **mod_from,
 			     struct rsnd_mod **mod_to);
 
+static dma_addr_t rsnd_dma_addr(struct rsnd_priv *priv,
+				struct rsnd_mod *mod,
+				int is_play, int is_from);
+
 int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id)
 {
 	struct device *dev = rsnd_priv_to_dev(priv);
@@ -122,8 +126,8 @@ int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id)
 	rsnd_dma_of_name(mod_from, mod_to, dma_name);
 
 	cfg.direction	= is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM;
-	cfg.src_addr	= rsnd_gen_dma_addr(priv, mod_from, is_play, 1);
-	cfg.dst_addr	= rsnd_gen_dma_addr(priv, mod_to,   is_play, 0);
+	cfg.src_addr	= rsnd_dma_addr(priv, mod_from, is_play, 1);
+	cfg.dst_addr	= rsnd_dma_addr(priv, mod_to,   is_play, 0);
 	cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
 	cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
 
@@ -168,6 +172,116 @@ void rsnd_dma_quit(struct rsnd_dma *dma)
 	dma->chan = NULL;
 }
 
+/*
+ *	DMA read/write register offset
+ *
+ *	RSND_xxx_I_N	for Audio DMAC input
+ *	RSND_xxx_O_N	for Audio DMAC output
+ *	RSND_xxx_I_P	for Audio DMAC peri peri input
+ *	RSND_xxx_O_P	for Audio DMAC peri peri output
+ *
+ *	ex) R-Car H2 case
+ *	      mod        / DMAC in    / DMAC out   / DMAC PP in / DMAC pp out
+ *	SSI : 0xec541000 / 0xec241008 / 0xec24100c
+ *	SSIU: 0xec541000 / 0xec100000 / 0xec100000 / 0xec400000 / 0xec400000
+ *	SCU : 0xec500000 / 0xec000000 / 0xec004000 / 0xec300000 / 0xec304000
+ *	CMD : 0xec500000 /            / 0xec008000                0xec308000
+ */
+#define RDMA_SSI_I_N(addr, i)	(addr ##_reg - 0x00300000 + (0x40 * i) + 0x8)
+#define RDMA_SSI_O_N(addr, i)	(addr ##_reg - 0x00300000 + (0x40 * i) + 0xc)
+
+#define RDMA_SSIU_I_N(addr, i)	(addr ##_reg - 0x00441000 + (0x1000 * i))
+#define RDMA_SSIU_O_N(addr, i)	(addr ##_reg - 0x00441000 + (0x1000 * i))
+
+#define RDMA_SSIU_I_P(addr, i)	(addr ##_reg - 0x00141000 + (0x1000 * i))
+#define RDMA_SSIU_O_P(addr, i)	(addr ##_reg - 0x00141000 + (0x1000 * i))
+
+#define RDMA_SRC_I_N(addr, i)	(addr ##_reg - 0x00500000 + (0x400 * i))
+#define RDMA_SRC_O_N(addr, i)	(addr ##_reg - 0x004fc000 + (0x400 * i))
+
+#define RDMA_SRC_I_P(addr, i)	(addr ##_reg - 0x00200000 + (0x400 * i))
+#define RDMA_SRC_O_P(addr, i)	(addr ##_reg - 0x001fc000 + (0x400 * i))
+
+#define RDMA_CMD_O_N(addr, i)	(addr ##_reg - 0x004f8000 + (0x400 * i))
+#define RDMA_CMD_O_P(addr, i)	(addr ##_reg - 0x001f8000 + (0x400 * i))
+
+static dma_addr_t
+rsnd_gen2_dma_addr(struct rsnd_priv *priv,
+		   struct rsnd_mod *mod,
+		   int is_play, int is_from)
+{
+	struct device *dev = rsnd_priv_to_dev(priv);
+	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+	phys_addr_t ssi_reg = rsnd_gen_get_phy_addr(priv, RSND_GEN2_SSI);
+	phys_addr_t src_reg = rsnd_gen_get_phy_addr(priv, RSND_GEN2_SCU);
+	int is_ssi = !!(rsnd_io_to_mod_ssi(io) == mod);
+	int use_src = !!rsnd_io_to_mod_src(io);
+	int use_dvc = !!rsnd_io_to_mod_dvc(io);
+	int id = rsnd_mod_id(mod);
+	struct dma_addr {
+		dma_addr_t out_addr;
+		dma_addr_t in_addr;
+	} dma_addrs[3][2][3] = {
+		/* SRC */
+		{{{ 0,				0 },
+		  /* Capture */
+		  { RDMA_SRC_O_N(src, id),	RDMA_SRC_I_P(src, id) },
+		  { RDMA_CMD_O_N(src, id),	RDMA_SRC_I_P(src, id) } },
+		 /* Playback */
+		 {{ 0,				0, },
+		  { RDMA_SRC_O_P(src, id),	RDMA_SRC_I_N(src, id) },
+		  { RDMA_CMD_O_P(src, id),	RDMA_SRC_I_N(src, id) } }
+		},
+		/* SSI */
+		/* Capture */
+		{{{ RDMA_SSI_O_N(ssi, id),	0 },
+		  { RDMA_SSIU_O_P(ssi, id),	0 },
+		  { RDMA_SSIU_O_P(ssi, id),	0 } },
+		 /* Playback */
+		 {{ 0,				RDMA_SSI_I_N(ssi, id) },
+		  { 0,				RDMA_SSIU_I_P(ssi, id) },
+		  { 0,				RDMA_SSIU_I_P(ssi, id) } }
+		},
+		/* SSIU */
+		/* Capture */
+		{{{ RDMA_SSIU_O_N(ssi, id),	0 },
+		  { RDMA_SSIU_O_P(ssi, id),	0 },
+		  { RDMA_SSIU_O_P(ssi, id),	0 } },
+		 /* Playback */
+		 {{ 0,				RDMA_SSIU_I_N(ssi, id) },
+		  { 0,				RDMA_SSIU_I_P(ssi, id) },
+		  { 0,				RDMA_SSIU_I_P(ssi, id) } } },
+	};
+
+	/* it shouldn't happen */
+	if (use_dvc && !use_src)
+		dev_err(dev, "DVC is selected without SRC\n");
+
+	/* use SSIU or SSI ? */
+	if (is_ssi && (0 == strcmp(rsnd_mod_dma_name(mod), "ssiu")))
+		is_ssi++;
+
+	return (is_from) ?
+		dma_addrs[is_ssi][is_play][use_src + use_dvc].out_addr :
+		dma_addrs[is_ssi][is_play][use_src + use_dvc].in_addr;
+}
+
+static dma_addr_t rsnd_dma_addr(struct rsnd_priv *priv,
+				struct rsnd_mod *mod,
+				int is_play, int is_from)
+{
+	/*
+	 * gen1 uses default DMA addr
+	 */
+	if (rsnd_is_gen1(priv))
+		return 0;
+
+	if (!mod)
+		return 0;
+
+	return rsnd_gen2_dma_addr(priv, mod, is_play, is_from);
+}
+
 static void rsnd_dma_of_path(struct rsnd_dma *dma,
 			     int is_play,
 			     struct rsnd_mod **mod_from,
diff --git a/sound/soc/sh/rcar/gen.c b/sound/soc/sh/rcar/gen.c
index 789de4c..5863a61 100644
--- a/sound/soc/sh/rcar/gen.c
+++ b/sound/soc/sh/rcar/gen.c
@@ -188,116 +188,6 @@ static int _rsnd_gen_regmap_init(struct rsnd_priv *priv,
 }
 
 /*
- *	DMA read/write register offset
- *
- *	RSND_xxx_I_N	for Audio DMAC input
- *	RSND_xxx_O_N	for Audio DMAC output
- *	RSND_xxx_I_P	for Audio DMAC peri peri input
- *	RSND_xxx_O_P	for Audio DMAC peri peri output
- *
- *	ex) R-Car H2 case
- *	      mod        / DMAC in    / DMAC out   / DMAC PP in / DMAC pp out
- *	SSI : 0xec541000 / 0xec241008 / 0xec24100c
- *	SSIU: 0xec541000 / 0xec100000 / 0xec100000 / 0xec400000 / 0xec400000
- *	SCU : 0xec500000 / 0xec000000 / 0xec004000 / 0xec300000 / 0xec304000
- *	CMD : 0xec500000 /            / 0xec008000                0xec308000
- */
-#define RDMA_SSI_I_N(addr, i)	(addr ##_reg - 0x00300000 + (0x40 * i) + 0x8)
-#define RDMA_SSI_O_N(addr, i)	(addr ##_reg - 0x00300000 + (0x40 * i) + 0xc)
-
-#define RDMA_SSIU_I_N(addr, i)	(addr ##_reg - 0x00441000 + (0x1000 * i))
-#define RDMA_SSIU_O_N(addr, i)	(addr ##_reg - 0x00441000 + (0x1000 * i))
-
-#define RDMA_SSIU_I_P(addr, i)	(addr ##_reg - 0x00141000 + (0x1000 * i))
-#define RDMA_SSIU_O_P(addr, i)	(addr ##_reg - 0x00141000 + (0x1000 * i))
-
-#define RDMA_SRC_I_N(addr, i)	(addr ##_reg - 0x00500000 + (0x400 * i))
-#define RDMA_SRC_O_N(addr, i)	(addr ##_reg - 0x004fc000 + (0x400 * i))
-
-#define RDMA_SRC_I_P(addr, i)	(addr ##_reg - 0x00200000 + (0x400 * i))
-#define RDMA_SRC_O_P(addr, i)	(addr ##_reg - 0x001fc000 + (0x400 * i))
-
-#define RDMA_CMD_O_N(addr, i)	(addr ##_reg - 0x004f8000 + (0x400 * i))
-#define RDMA_CMD_O_P(addr, i)	(addr ##_reg - 0x001f8000 + (0x400 * i))
-
-static dma_addr_t
-rsnd_gen2_dma_addr(struct rsnd_priv *priv,
-		   struct rsnd_mod *mod,
-		   int is_play, int is_from)
-{
-	struct device *dev = rsnd_priv_to_dev(priv);
-	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
-	phys_addr_t ssi_reg = rsnd_gen_get_phy_addr(priv, RSND_GEN2_SSI);
-	phys_addr_t src_reg = rsnd_gen_get_phy_addr(priv, RSND_GEN2_SCU);
-	int is_ssi = !!(rsnd_io_to_mod_ssi(io) == mod);
-	int use_src = !!rsnd_io_to_mod_src(io);
-	int use_dvc = !!rsnd_io_to_mod_dvc(io);
-	int id = rsnd_mod_id(mod);
-	struct dma_addr {
-		dma_addr_t out_addr;
-		dma_addr_t in_addr;
-	} dma_addrs[3][2][3] = {
-		/* SRC */
-		{{{ 0,				0 },
-		/* Capture */
-		  { RDMA_SRC_O_N(src, id),	RDMA_SRC_I_P(src, id) },
-		  { RDMA_CMD_O_N(src, id),	RDMA_SRC_I_P(src, id) } },
-		 /* Playback */
-		 {{ 0,				0, },
-		  { RDMA_SRC_O_P(src, id),	RDMA_SRC_I_N(src, id) },
-		  { RDMA_CMD_O_P(src, id),	RDMA_SRC_I_N(src, id) } }
-		},
-		/* SSI */
-		/* Capture */
-		{{{ RDMA_SSI_O_N(ssi, id),	0 },
-		  { RDMA_SSIU_O_P(ssi, id),	0 },
-		  { RDMA_SSIU_O_P(ssi, id),	0 } },
-		 /* Playback */
-		 {{ 0,				RDMA_SSI_I_N(ssi, id) },
-		  { 0,				RDMA_SSIU_I_P(ssi, id) },
-		  { 0,				RDMA_SSIU_I_P(ssi, id) } }
-		},
-		/* SSIU */
-		/* Capture */
-		{{{ RDMA_SSIU_O_N(ssi, id),	0 },
-		  { RDMA_SSIU_O_P(ssi, id),	0 },
-		  { RDMA_SSIU_O_P(ssi, id),	0 } },
-		 /* Playback */
-		 {{ 0,				RDMA_SSIU_I_N(ssi, id) },
-		  { 0,				RDMA_SSIU_I_P(ssi, id) },
-		  { 0,				RDMA_SSIU_I_P(ssi, id) } } },
-	};
-
-	/* it shouldn't happen */
-	if (use_dvc && !use_src)
-		dev_err(dev, "DVC is selected without SRC\n");
-
-	/* use SSIU or SSI ? */
-	if (is_ssi && (0 == strcmp(rsnd_mod_dma_name(mod), "ssiu")))
-		is_ssi++;
-
-	return (is_from) ?
-		dma_addrs[is_ssi][is_play][use_src + use_dvc].out_addr :
-		dma_addrs[is_ssi][is_play][use_src + use_dvc].in_addr;
-}
-
-dma_addr_t rsnd_gen_dma_addr(struct rsnd_priv *priv,
-			     struct rsnd_mod *mod,
-			     int is_play, int is_from)
-{
-	/*
-	 * gen1 uses default DMA addr
-	 */
-	if (rsnd_is_gen1(priv))
-		return 0;
-
-	if (!mod)
-		return 0;
-
-	return rsnd_gen2_dma_addr(priv, mod, is_play, is_from);
-}
-
-/*
  *		Gen2
  */
 static int rsnd_gen2_probe(struct platform_device *pdev,
diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h
index 8a8a4d5..a73e94c 100644
--- a/sound/soc/sh/rcar/rsnd.h
+++ b/sound/soc/sh/rcar/rsnd.h
@@ -328,9 +328,6 @@ int rsnd_gen_probe(struct platform_device *pdev,
 void __iomem *rsnd_gen_reg_get(struct rsnd_priv *priv,
 			       struct rsnd_mod *mod,
 			       enum rsnd_reg reg);
-dma_addr_t rsnd_gen_dma_addr(struct rsnd_priv *priv,
-		       struct rsnd_mod *mod,
-		       int is_play,  int is_from);
 phys_addr_t rsnd_gen_get_phy_addr(struct rsnd_priv *priv, int reg_id);
 
 #define rsnd_is_gen1(s)		(((s)->info->flags & RSND_GEN_MASK) == RSND_GEN1)
-- 
1.7.9.5

[PATCH 10/19] ASoC: rsnd: enable to care 1st / 2nd DMAC on rsnd_dma_xxx()

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

rsnd driver needs to care about Audio DAMC (via DMAEngine),
Audio DMAC peri peri (via local method) on rsnd driver.
This patch adds new rsnd_dma_ops and care it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 sound/soc/sh/rcar/dma.c  |   78 +++++++++++++++++++++++++++++++---------------
 sound/soc/sh/rcar/rsnd.h |   12 +++++++
 2 files changed, 65 insertions(+), 25 deletions(-)

diff --git a/sound/soc/sh/rcar/dma.c b/sound/soc/sh/rcar/dma.c
index 9f909f1..61fba17 100644
--- a/sound/soc/sh/rcar/dma.c
+++ b/sound/soc/sh/rcar/dma.c
@@ -10,7 +10,7 @@
  */
 #include "rsnd.h"
 
-static void rsnd_dma_complete(void *data)
+static void rsnd_dmaen_complete(void *data)
 {
 	struct rsnd_dma *dma = (struct rsnd_dma *)data;
 	struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
@@ -33,7 +33,7 @@ static void rsnd_dma_complete(void *data)
 
 #define DMA_NAME_SIZE 16
 #define MOD_MAX 4 /* MEM/SSI/SRC/DVC */
-static int _rsnd_dma_of_name(char *dma_name, struct rsnd_mod *mod)
+static int _rsnd_dmaen_of_name(char *dma_name, struct rsnd_mod *mod)
 {
 	if (mod)
 		return snprintf(dma_name, DMA_NAME_SIZE / 2, "%s%d",
@@ -43,23 +43,23 @@ static int _rsnd_dma_of_name(char *dma_name, struct rsnd_mod *mod)
 
 }
 
-static void rsnd_dma_of_name(struct rsnd_mod *mod_from,
+static void rsnd_dmaen_of_name(struct rsnd_mod *mod_from,
 			     struct rsnd_mod *mod_to,
 			     char *dma_name)
 {
 	int index = 0;
 
-	index = _rsnd_dma_of_name(dma_name + index, mod_from);
+	index = _rsnd_dmaen_of_name(dma_name + index, mod_from);
 	*(dma_name + index++) = '_';
-	index = _rsnd_dma_of_name(dma_name + index, mod_to);
+	index = _rsnd_dmaen_of_name(dma_name + index, mod_to);
 }
 
-void rsnd_dma_stop(struct rsnd_dma *dma)
+static void rsnd_dmaen_stop(struct rsnd_dma *dma)
 {
 	dmaengine_terminate_all(dma->chan);
 }
 
-void rsnd_dma_start(struct rsnd_dma *dma)
+static void rsnd_dmaen_start(struct rsnd_dma *dma)
 {
 	struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
 	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
@@ -81,7 +81,7 @@ void rsnd_dma_start(struct rsnd_dma *dma)
 		return;
 	}
 
-	desc->callback		= rsnd_dma_complete;
+	desc->callback		= rsnd_dmaen_complete;
 	desc->callback_param	= dma;
 
 	if (dmaengine_submit(desc) < 0) {
@@ -92,22 +92,12 @@ void rsnd_dma_start(struct rsnd_dma *dma)
 	dma_async_issue_pending(dma->chan);
 }
 
-static void rsnd_dma_of_path(struct rsnd_dma *dma,
-			     int is_play,
-			     struct rsnd_mod **mod_from,
-			     struct rsnd_mod **mod_to);
-
-static dma_addr_t rsnd_dma_addr(struct rsnd_priv *priv,
-				struct rsnd_mod *mod,
-				int is_play, int is_from);
-
-int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id)
+static int rsnd_dmaen_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id,
+			   struct rsnd_mod *mod_from, struct rsnd_mod *mod_to)
 {
 	struct device *dev = rsnd_priv_to_dev(priv);
 	struct dma_slave_config cfg = {};
 	struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
-	struct rsnd_mod *mod_from;
-	struct rsnd_mod *mod_to;
 	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
 	int is_play = rsnd_io_is_play(io);
 	char dma_name[DMA_NAME_SIZE];
@@ -122,12 +112,11 @@ int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id)
 	dma_cap_zero(mask);
 	dma_cap_set(DMA_SLAVE, mask);
 
-	rsnd_dma_of_path(dma, is_play, &mod_from, &mod_to);
-	rsnd_dma_of_name(mod_from, mod_to, dma_name);
+	rsnd_dmaen_of_name(mod_from, mod_to, dma_name);
 
 	cfg.direction	= is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM;
-	cfg.src_addr	= rsnd_dma_addr(priv, mod_from, is_play, 1);
-	cfg.dst_addr	= rsnd_dma_addr(priv, mod_to,   is_play, 0);
+	cfg.src_addr	= dma->src_addr;
+	cfg.dst_addr	= dma->dst_addr;
 	cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
 	cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
 
@@ -164,7 +153,7 @@ rsnd_dma_channel_err:
 	return -EAGAIN;
 }
 
-void rsnd_dma_quit(struct rsnd_dma *dma)
+static void rsnd_dmaen_quit(struct rsnd_dma *dma)
 {
 	if (dma->chan)
 		dma_release_channel(dma->chan);
@@ -172,6 +161,13 @@ void rsnd_dma_quit(struct rsnd_dma *dma)
 	dma->chan = NULL;
 }
 
+static struct rsnd_dma_ops rsnd_dmaen_ops = {
+	.start	= rsnd_dmaen_start,
+	.stop	= rsnd_dmaen_stop,
+	.init	= rsnd_dmaen_init,
+	.quit	= rsnd_dmaen_quit,
+};
+
 /*
  *	DMA read/write register offset
  *
@@ -343,3 +339,35 @@ static void rsnd_dma_of_path(struct rsnd_dma *dma,
 	}
 }
 
+void rsnd_dma_stop(struct rsnd_dma *dma)
+{
+	dma->ops->stop(dma);
+}
+
+void rsnd_dma_start(struct rsnd_dma *dma)
+{
+	dma->ops->start(dma);
+}
+
+void rsnd_dma_quit(struct rsnd_dma *dma)
+{
+	dma->ops->quit(dma);
+}
+
+int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id)
+{
+	struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
+	struct rsnd_mod *mod_from;
+	struct rsnd_mod *mod_to;
+	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+	int is_play = rsnd_io_is_play(io);
+
+	rsnd_dma_of_path(dma, is_play, &mod_from, &mod_to);
+
+	dma->src_addr = rsnd_dma_addr(priv, mod_from, is_play, 1);
+	dma->dst_addr = rsnd_dma_addr(priv, mod_to,   is_play, 0);
+
+	dma->ops = &rsnd_dmaen_ops;
+
+	return dma->ops->init(priv, dma, id, mod_from, mod_to);
+}
diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h
index a73e94c..c7299f7 100644
--- a/sound/soc/sh/rcar/rsnd.h
+++ b/sound/soc/sh/rcar/rsnd.h
@@ -170,10 +170,22 @@ u32 rsnd_get_adinr(struct rsnd_mod *mod);
 /*
  *	R-Car DMA
  */
+struct rsnd_dma;
+struct rsnd_dma_ops {
+	void (*start)(struct rsnd_dma *dma);
+	void (*stop)(struct rsnd_dma *dma);
+	int (*init)(struct rsnd_priv *priv, struct rsnd_dma *dma, int id,
+		    struct rsnd_mod *mod_from, struct rsnd_mod *mod_to);
+	void  (*quit)(struct rsnd_dma *dma);
+};
+
 struct rsnd_dma {
 	struct dma_chan		*chan;
+	struct rsnd_dma_ops	*ops;
 	enum dma_transfer_direction dir;
 	dma_addr_t		addr;
+	dma_addr_t		src_addr;
+	dma_addr_t		dst_addr;
 };
 
 void rsnd_dma_start(struct rsnd_dma *dma);
-- 
1.7.9.5

[PATCH 11/19] ASoC: rsnd: add Audio DMAC peri peri support rework

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

Renesas R-Car sound (= rsnd) needs 2 DMAC which are called as
Audio DMAC (= 1st DMAC) and Audio DMAC peri peri (2nd DMAC).
And rsnd had assumed that 1st / 2nd DMACs are implemented as DMAEngine.
But, in result of DMA ML discussion, 2nd DMAC was concluded that it is
not a general purpose DMAC (2nd DMAC is for Device to Device inside
sound system). Additionally, current DMAEngine can't support Device to
Device, and we don't have correct DT bindings for it at this point.
So the easiest solution for it is that move it from DMAEngine to rsnd
driver.
Audio DMAC peri peri is controlled from sound driver without DMAEngine
by this patch.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 sound/soc/sh/rcar/core.c |    1 +
 sound/soc/sh/rcar/dma.c  |  212 +++++++++++++++++++++++++++++++++++++++++++++-
 sound/soc/sh/rcar/rsnd.h |   11 ++-
 3 files changed, 222 insertions(+), 2 deletions(-)

diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
index 9beea9b..3b6e219 100644
--- a/sound/soc/sh/rcar/core.c
+++ b/sound/soc/sh/rcar/core.c
@@ -974,6 +974,7 @@ static int rsnd_probe(struct platform_device *pdev)
 			    const struct rsnd_of_data *of_data,
 			    struct rsnd_priv *priv) = {
 		rsnd_gen_probe,
+		rsnd_dma_probe,
 		rsnd_ssi_probe,
 		rsnd_src_probe,
 		rsnd_dvc_probe,
diff --git a/sound/soc/sh/rcar/dma.c b/sound/soc/sh/rcar/dma.c
index 61fba17..9cb5785 100644
--- a/sound/soc/sh/rcar/dma.c
+++ b/sound/soc/sh/rcar/dma.c
@@ -8,8 +8,29 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
+#include <linux/delay.h>
 #include "rsnd.h"
 
+/*
+ * Audio DMAC peri peri register
+ */
+#define PDMASAR		0x00
+#define PDMADAR		0x04
+#define PDMACHCR	0x0c
+
+/* PDMACHCR */
+#define PDMACHCR_DE		(1 << 0)
+
+struct rsnd_dma_ctrl {
+	void __iomem *base;
+	int dmapp_num;
+};
+
+#define rsnd_priv_to_dmac(p)	((struct rsnd_dma_ctrl *)(p)->dma)
+
+/*
+ *		Audio DMAC
+ */
 static void rsnd_dmaen_complete(void *data)
 {
 	struct rsnd_dma *dma = (struct rsnd_dma *)data;
@@ -109,6 +130,8 @@ static int rsnd_dmaen_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id,
 		return -EIO;
 	}
 
+	dev_dbg(dev, "Audio DMAC init\n");
+
 	dma_cap_zero(mask);
 	dma_cap_set(DMA_SLAVE, mask);
 
@@ -169,6 +192,151 @@ static struct rsnd_dma_ops rsnd_dmaen_ops = {
 };
 
 /*
+ *		Audio DMAC peri peri
+ */
+static const u8 gen2_id_table_ssiu[] = {
+	0x00, /* SSI00 */
+	0x04, /* SSI10 */
+	0x08, /* SSI20 */
+	0x0c, /* SSI3  */
+	0x0d, /* SSI4  */
+	0x0e, /* SSI5  */
+	0x0f, /* SSI6  */
+	0x10, /* SSI7  */
+	0x11, /* SSI8  */
+	0x12, /* SSI90 */
+};
+static const u8 gen2_id_table_scu[] = {
+	0x2d, /* SCU_SRCI0 */
+	0x2e, /* SCU_SRCI1 */
+	0x2f, /* SCU_SRCI2 */
+	0x30, /* SCU_SRCI3 */
+	0x31, /* SCU_SRCI4 */
+	0x32, /* SCU_SRCI5 */
+	0x33, /* SCU_SRCI6 */
+	0x34, /* SCU_SRCI7 */
+	0x35, /* SCU_SRCI8 */
+	0x36, /* SCU_SRCI9 */
+};
+static const u8 gen2_id_table_cmd[] = {
+	0x37, /* SCU_CMD0 */
+	0x38, /* SCU_CMD1 */
+};
+
+static u32 rsnd_dmapp_get_id(struct rsnd_mod *mod)
+{
+	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+	struct rsnd_mod *ssi = rsnd_io_to_mod_ssi(io);
+	struct rsnd_mod *src = rsnd_io_to_mod_src(io);
+	struct rsnd_mod *dvc = rsnd_io_to_mod_dvc(io);
+	const u8 *entry = NULL;
+	int id = rsnd_mod_id(mod);
+	int size = 0;
+
+	if (mod = ssi) {
+		entry = gen2_id_table_ssiu;
+		size = ARRAY_SIZE(gen2_id_table_ssiu);
+	}
+	else if (mod = src) {
+		entry = gen2_id_table_scu;
+		size = ARRAY_SIZE(gen2_id_table_scu);
+	}
+	else if (mod = dvc) {
+		entry = gen2_id_table_cmd;
+		size = ARRAY_SIZE(gen2_id_table_cmd);
+	}
+
+	if (!entry)
+		return 0xFF;
+
+	if (size <= id)
+		return 0xFF;
+
+	return entry[id];
+}
+
+static u32 rsnd_dmapp_get_chcr(struct rsnd_mod *mod_from,
+			       struct rsnd_mod *mod_to)
+{
+	return	(rsnd_dmapp_get_id(mod_from) << 24) +
+		(rsnd_dmapp_get_id(mod_to) << 16);
+}
+
+#define rsnd_dmapp_addr(dmac, dma, reg) dmac->base + 0x20 + (0x10 * dma->dmapp_id) + reg
+static void rsnd_dmapp_write(struct rsnd_dma *dma, u32 data, u32 reg)
+{
+	struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
+	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+	struct rsnd_dma_ctrl *dmac = rsnd_priv_to_dmac(priv);
+	struct device *dev = rsnd_priv_to_dev(priv);
+
+	dev_dbg(dev, "w %p : %08x\n", rsnd_dmapp_addr(dmac, dma, reg), data);
+
+	iowrite32(data, rsnd_dmapp_addr(dmac, dma, reg));
+}
+
+static u32 rsnd_dmapp_read(struct rsnd_dma *dma, u32 reg)
+{
+	struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
+	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+	struct rsnd_dma_ctrl *dmac = rsnd_priv_to_dmac(priv);
+
+	return ioread32(rsnd_dmapp_addr(dmac, dma, reg));
+}
+
+static void rsnd_dmapp_stop(struct rsnd_dma *dma)
+{
+	int i;
+
+	rsnd_dmapp_write(dma, 0, PDMACHCR);
+
+	for (i = 0; i < 1024; i++) {
+		if (0 = rsnd_dmapp_read(dma, PDMACHCR))
+			return;
+		udelay(1);
+	}
+}
+
+static void rsnd_dmapp_start(struct rsnd_dma *dma)
+{
+	rsnd_dmapp_write(dma, dma->src_addr,	PDMASAR);
+	rsnd_dmapp_write(dma, dma->dst_addr,	PDMADAR);
+	rsnd_dmapp_write(dma, dma->chcr,	PDMACHCR);
+}
+
+static int rsnd_dmapp_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id,
+			   struct rsnd_mod *mod_from, struct rsnd_mod *mod_to)
+{
+	struct rsnd_dma_ctrl *dmac = rsnd_priv_to_dmac(priv);
+	struct device *dev = rsnd_priv_to_dev(priv);
+
+	dev_dbg(dev, "Audio DMAC peri peri init\n");
+
+	dma->dmapp_id = dmac->dmapp_num;
+	dma->chcr = rsnd_dmapp_get_chcr(mod_from, mod_to) | PDMACHCR_DE;
+
+	dmac->dmapp_num++;
+
+	rsnd_dmapp_stop(dma);
+
+	dev_dbg(dev, "id/src/dst/chcr = %d/%x/%x/%08x\n",
+		dma->dmapp_id, dma->src_addr, dma->dst_addr, dma->chcr);
+
+	return 0;
+}
+
+static struct rsnd_dma_ops rsnd_dmapp_ops = {
+	.start	= rsnd_dmapp_start,
+	.stop	= rsnd_dmapp_stop,
+	.init	= rsnd_dmapp_init,
+	.quit	= rsnd_dmapp_stop,
+};
+
+/*
+ *		Common DMAC Interface
+ */
+
+/*
  *	DMA read/write register offset
  *
  *	RSND_xxx_I_N	for Audio DMAC input
@@ -367,7 +535,49 @@ int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id)
 	dma->src_addr = rsnd_dma_addr(priv, mod_from, is_play, 1);
 	dma->dst_addr = rsnd_dma_addr(priv, mod_to,   is_play, 0);
 
-	dma->ops = &rsnd_dmaen_ops;
+	/* for Gen2 */
+	if (mod_from && mod_to)
+		dma->ops = &rsnd_dmapp_ops;
+	else
+		dma->ops = &rsnd_dmaen_ops;
+
+	/* for Gen1, overwrite */
+	if (rsnd_is_gen1(priv))
+		dma->ops = &rsnd_dmaen_ops;
 
 	return dma->ops->init(priv, dma, id, mod_from, mod_to);
 }
+
+int rsnd_dma_probe(struct platform_device *pdev,
+		   const struct rsnd_of_data *of_data,
+		   struct rsnd_priv *priv)
+{
+	struct device *dev = rsnd_priv_to_dev(priv);
+	struct rsnd_dma_ctrl *dmac;
+	struct resource *res;
+
+	/*
+	 * for Gen1
+	 */
+	if (rsnd_is_gen1(priv))
+		return 0;
+
+	/*
+	 * for Gen2
+	 */
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "audmapp");
+	dmac = devm_kzalloc(dev, sizeof(*dmac), GFP_KERNEL);
+	if (!dmac || !res) {
+		dev_err(dev, "dma allocate failed\n");
+		return -ENOMEM;
+	}
+
+	dmac->dmapp_num = 0;
+	dmac->base = devm_ioremap_resource(dev, res);
+	if (IS_ERR(dmac->base))
+		return PTR_ERR(dmac->base);
+
+	priv->dma = dmac;
+
+	return 0;
+}
diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h
index c7299f7..9e67142 100644
--- a/sound/soc/sh/rcar/rsnd.h
+++ b/sound/soc/sh/rcar/rsnd.h
@@ -184,6 +184,8 @@ struct rsnd_dma {
 	struct rsnd_dma_ops	*ops;
 	enum dma_transfer_direction dir;
 	dma_addr_t		addr;
+	int			dmapp_id;
+	u32			chcr;
 	dma_addr_t		src_addr;
 	dma_addr_t		dst_addr;
 };
@@ -192,7 +194,9 @@ void rsnd_dma_start(struct rsnd_dma *dma);
 void rsnd_dma_stop(struct rsnd_dma *dma);
 int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id);
 void  rsnd_dma_quit(struct rsnd_dma *dma);
-
+int rsnd_dma_probe(struct platform_device *pdev,
+		   const struct rsnd_of_data *of_data,
+		   struct rsnd_priv *priv);
 
 #define rsnd_dma_to_mod(_dma) container_of((_dma), struct rsnd_mod, dma)
 
@@ -396,6 +400,11 @@ struct rsnd_priv {
 	void *adg;
 
 	/*
+	 * below value will be filled on rsnd_dma_probe()
+	 */
+	void *dma;
+
+	/*
 	 * below value will be filled on rsnd_ssi_probe()
 	 */
 	void *ssi;
-- 
1.7.9.5

[PATCH 11/19] ASoC: rsnd: add Audio DMAC peri peri support rework

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

Renesas R-Car sound (= rsnd) needs 2 DMAC which are called as
Audio DMAC (= 1st DMAC) and Audio DMAC peri peri (2nd DMAC).
And rsnd had assumed that 1st / 2nd DMACs are implemented as DMAEngine.
But, in result of DMA ML discussion, 2nd DMAC was concluded that it is
not a general purpose DMAC (2nd DMAC is for Device to Device inside
sound system). Additionally, current DMAEngine can't support Device to
Device, and we don't have correct DT bindings for it at this point.
So the easiest solution for it is that move it from DMAEngine to rsnd
driver.
Audio DMAC peri peri is controlled from sound driver without DMAEngine
by this patch.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 sound/soc/sh/rcar/core.c |    1 +
 sound/soc/sh/rcar/dma.c  |  212 +++++++++++++++++++++++++++++++++++++++++++++-
 sound/soc/sh/rcar/rsnd.h |   11 ++-
 3 files changed, 222 insertions(+), 2 deletions(-)

diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
index 9beea9b..3b6e219 100644
--- a/sound/soc/sh/rcar/core.c
+++ b/sound/soc/sh/rcar/core.c
@@ -974,6 +974,7 @@ static int rsnd_probe(struct platform_device *pdev)
 			    const struct rsnd_of_data *of_data,
 			    struct rsnd_priv *priv) = {
 		rsnd_gen_probe,
+		rsnd_dma_probe,
 		rsnd_ssi_probe,
 		rsnd_src_probe,
 		rsnd_dvc_probe,
diff --git a/sound/soc/sh/rcar/dma.c b/sound/soc/sh/rcar/dma.c
index 61fba17..9cb5785 100644
--- a/sound/soc/sh/rcar/dma.c
+++ b/sound/soc/sh/rcar/dma.c
@@ -8,8 +8,29 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
+#include <linux/delay.h>
 #include "rsnd.h"
 
+/*
+ * Audio DMAC peri peri register
+ */
+#define PDMASAR		0x00
+#define PDMADAR		0x04
+#define PDMACHCR	0x0c
+
+/* PDMACHCR */
+#define PDMACHCR_DE		(1 << 0)
+
+struct rsnd_dma_ctrl {
+	void __iomem *base;
+	int dmapp_num;
+};
+
+#define rsnd_priv_to_dmac(p)	((struct rsnd_dma_ctrl *)(p)->dma)
+
+/*
+ *		Audio DMAC
+ */
 static void rsnd_dmaen_complete(void *data)
 {
 	struct rsnd_dma *dma = (struct rsnd_dma *)data;
@@ -109,6 +130,8 @@ static int rsnd_dmaen_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id,
 		return -EIO;
 	}
 
+	dev_dbg(dev, "Audio DMAC init\n");
+
 	dma_cap_zero(mask);
 	dma_cap_set(DMA_SLAVE, mask);
 
@@ -169,6 +192,151 @@ static struct rsnd_dma_ops rsnd_dmaen_ops = {
 };
 
 /*
+ *		Audio DMAC peri peri
+ */
+static const u8 gen2_id_table_ssiu[] = {
+	0x00, /* SSI00 */
+	0x04, /* SSI10 */
+	0x08, /* SSI20 */
+	0x0c, /* SSI3  */
+	0x0d, /* SSI4  */
+	0x0e, /* SSI5  */
+	0x0f, /* SSI6  */
+	0x10, /* SSI7  */
+	0x11, /* SSI8  */
+	0x12, /* SSI90 */
+};
+static const u8 gen2_id_table_scu[] = {
+	0x2d, /* SCU_SRCI0 */
+	0x2e, /* SCU_SRCI1 */
+	0x2f, /* SCU_SRCI2 */
+	0x30, /* SCU_SRCI3 */
+	0x31, /* SCU_SRCI4 */
+	0x32, /* SCU_SRCI5 */
+	0x33, /* SCU_SRCI6 */
+	0x34, /* SCU_SRCI7 */
+	0x35, /* SCU_SRCI8 */
+	0x36, /* SCU_SRCI9 */
+};
+static const u8 gen2_id_table_cmd[] = {
+	0x37, /* SCU_CMD0 */
+	0x38, /* SCU_CMD1 */
+};
+
+static u32 rsnd_dmapp_get_id(struct rsnd_mod *mod)
+{
+	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+	struct rsnd_mod *ssi = rsnd_io_to_mod_ssi(io);
+	struct rsnd_mod *src = rsnd_io_to_mod_src(io);
+	struct rsnd_mod *dvc = rsnd_io_to_mod_dvc(io);
+	const u8 *entry = NULL;
+	int id = rsnd_mod_id(mod);
+	int size = 0;
+
+	if (mod == ssi) {
+		entry = gen2_id_table_ssiu;
+		size = ARRAY_SIZE(gen2_id_table_ssiu);
+	}
+	else if (mod == src) {
+		entry = gen2_id_table_scu;
+		size = ARRAY_SIZE(gen2_id_table_scu);
+	}
+	else if (mod == dvc) {
+		entry = gen2_id_table_cmd;
+		size = ARRAY_SIZE(gen2_id_table_cmd);
+	}
+
+	if (!entry)
+		return 0xFF;
+
+	if (size <= id)
+		return 0xFF;
+
+	return entry[id];
+}
+
+static u32 rsnd_dmapp_get_chcr(struct rsnd_mod *mod_from,
+			       struct rsnd_mod *mod_to)
+{
+	return	(rsnd_dmapp_get_id(mod_from) << 24) +
+		(rsnd_dmapp_get_id(mod_to) << 16);
+}
+
+#define rsnd_dmapp_addr(dmac, dma, reg) dmac->base + 0x20 + (0x10 * dma->dmapp_id) + reg
+static void rsnd_dmapp_write(struct rsnd_dma *dma, u32 data, u32 reg)
+{
+	struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
+	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+	struct rsnd_dma_ctrl *dmac = rsnd_priv_to_dmac(priv);
+	struct device *dev = rsnd_priv_to_dev(priv);
+
+	dev_dbg(dev, "w %p : %08x\n", rsnd_dmapp_addr(dmac, dma, reg), data);
+
+	iowrite32(data, rsnd_dmapp_addr(dmac, dma, reg));
+}
+
+static u32 rsnd_dmapp_read(struct rsnd_dma *dma, u32 reg)
+{
+	struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
+	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+	struct rsnd_dma_ctrl *dmac = rsnd_priv_to_dmac(priv);
+
+	return ioread32(rsnd_dmapp_addr(dmac, dma, reg));
+}
+
+static void rsnd_dmapp_stop(struct rsnd_dma *dma)
+{
+	int i;
+
+	rsnd_dmapp_write(dma, 0, PDMACHCR);
+
+	for (i = 0; i < 1024; i++) {
+		if (0 == rsnd_dmapp_read(dma, PDMACHCR))
+			return;
+		udelay(1);
+	}
+}
+
+static void rsnd_dmapp_start(struct rsnd_dma *dma)
+{
+	rsnd_dmapp_write(dma, dma->src_addr,	PDMASAR);
+	rsnd_dmapp_write(dma, dma->dst_addr,	PDMADAR);
+	rsnd_dmapp_write(dma, dma->chcr,	PDMACHCR);
+}
+
+static int rsnd_dmapp_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id,
+			   struct rsnd_mod *mod_from, struct rsnd_mod *mod_to)
+{
+	struct rsnd_dma_ctrl *dmac = rsnd_priv_to_dmac(priv);
+	struct device *dev = rsnd_priv_to_dev(priv);
+
+	dev_dbg(dev, "Audio DMAC peri peri init\n");
+
+	dma->dmapp_id = dmac->dmapp_num;
+	dma->chcr = rsnd_dmapp_get_chcr(mod_from, mod_to) | PDMACHCR_DE;
+
+	dmac->dmapp_num++;
+
+	rsnd_dmapp_stop(dma);
+
+	dev_dbg(dev, "id/src/dst/chcr = %d/%x/%x/%08x\n",
+		dma->dmapp_id, dma->src_addr, dma->dst_addr, dma->chcr);
+
+	return 0;
+}
+
+static struct rsnd_dma_ops rsnd_dmapp_ops = {
+	.start	= rsnd_dmapp_start,
+	.stop	= rsnd_dmapp_stop,
+	.init	= rsnd_dmapp_init,
+	.quit	= rsnd_dmapp_stop,
+};
+
+/*
+ *		Common DMAC Interface
+ */
+
+/*
  *	DMA read/write register offset
  *
  *	RSND_xxx_I_N	for Audio DMAC input
@@ -367,7 +535,49 @@ int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id)
 	dma->src_addr = rsnd_dma_addr(priv, mod_from, is_play, 1);
 	dma->dst_addr = rsnd_dma_addr(priv, mod_to,   is_play, 0);
 
-	dma->ops = &rsnd_dmaen_ops;
+	/* for Gen2 */
+	if (mod_from && mod_to)
+		dma->ops = &rsnd_dmapp_ops;
+	else
+		dma->ops = &rsnd_dmaen_ops;
+
+	/* for Gen1, overwrite */
+	if (rsnd_is_gen1(priv))
+		dma->ops = &rsnd_dmaen_ops;
 
 	return dma->ops->init(priv, dma, id, mod_from, mod_to);
 }
+
+int rsnd_dma_probe(struct platform_device *pdev,
+		   const struct rsnd_of_data *of_data,
+		   struct rsnd_priv *priv)
+{
+	struct device *dev = rsnd_priv_to_dev(priv);
+	struct rsnd_dma_ctrl *dmac;
+	struct resource *res;
+
+	/*
+	 * for Gen1
+	 */
+	if (rsnd_is_gen1(priv))
+		return 0;
+
+	/*
+	 * for Gen2
+	 */
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "audmapp");
+	dmac = devm_kzalloc(dev, sizeof(*dmac), GFP_KERNEL);
+	if (!dmac || !res) {
+		dev_err(dev, "dma allocate failed\n");
+		return -ENOMEM;
+	}
+
+	dmac->dmapp_num = 0;
+	dmac->base = devm_ioremap_resource(dev, res);
+	if (IS_ERR(dmac->base))
+		return PTR_ERR(dmac->base);
+
+	priv->dma = dmac;
+
+	return 0;
+}
diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h
index c7299f7..9e67142 100644
--- a/sound/soc/sh/rcar/rsnd.h
+++ b/sound/soc/sh/rcar/rsnd.h
@@ -184,6 +184,8 @@ struct rsnd_dma {
 	struct rsnd_dma_ops	*ops;
 	enum dma_transfer_direction dir;
 	dma_addr_t		addr;
+	int			dmapp_id;
+	u32			chcr;
 	dma_addr_t		src_addr;
 	dma_addr_t		dst_addr;
 };
@@ -192,7 +194,9 @@ void rsnd_dma_start(struct rsnd_dma *dma);
 void rsnd_dma_stop(struct rsnd_dma *dma);
 int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id);
 void  rsnd_dma_quit(struct rsnd_dma *dma);
-
+int rsnd_dma_probe(struct platform_device *pdev,
+		   const struct rsnd_of_data *of_data,
+		   struct rsnd_priv *priv);
 
 #define rsnd_dma_to_mod(_dma) container_of((_dma), struct rsnd_mod, dma)
 
@@ -396,6 +400,11 @@ struct rsnd_priv {
 	void *adg;
 
 	/*
+	 * below value will be filled on rsnd_dma_probe()
+	 */
+	void *dma;
+
+	/*
 	 * below value will be filled on rsnd_ssi_probe()
 	 */
 	void *ssi;
-- 
1.7.9.5

[PATCH 12/19] ASoC: rsnd: dma-names cares 1st DMAC only

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

Renesas R-Car sound (= rsnd) needs 2 DMAC which are called as
Audio DMAC (= 1st DMAC) and Audio DMAC peri peri (2nd DMAC).
And rsnd had assumed that 1st / 2nd DMACs are implemented as DMAEngine.
But, in result of DMA ML discussion, 2nd DMAC was concluded that it is
not a general purpose DMAC (2nd DMAC is for Device to Device inside
sound system). Additionally, current DMAEngine can't support Device to
Device, and we don't have correct DT bindings for it at this point.
So the easiest solution for it is that move it from DMAEngine to rsnd
driver.

dma-names on DT was implemented as no difference between 1st / 2nd
DMAC's, since rsnd had assumed that both DMACs are implemented as
DMAEngine. That style was "src_dst". But now, 2nd DMAC was implemented
as non DMAEngine, and it doesn't need dma-names anymore. So, this
dma-names rule is no longer needed.

In upstream code, no SoC/platform is supporting DMA for rsnd driver yet.
This means there is no compatible issue if this patch changes
dma-names's naming rule of DT.
This patch assumes dma-names are tx/rx base for 1st DMAC on DT.
ex)
	"mem_ssi0" -> "ssi0-rx"
	"ssi0_mem" -> "ssi0-tx"

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 sound/soc/sh/rcar/dma.c |   29 ++++++++++++++++-------------
 1 file changed, 16 insertions(+), 13 deletions(-)

diff --git a/sound/soc/sh/rcar/dma.c b/sound/soc/sh/rcar/dma.c
index 9cb5785..5b0c344 100644
--- a/sound/soc/sh/rcar/dma.c
+++ b/sound/soc/sh/rcar/dma.c
@@ -54,25 +54,28 @@ static void rsnd_dmaen_complete(void *data)
 
 #define DMA_NAME_SIZE 16
 #define MOD_MAX 4 /* MEM/SSI/SRC/DVC */
-static int _rsnd_dmaen_of_name(char *dma_name, struct rsnd_mod *mod)
-{
-	if (mod)
-		return snprintf(dma_name, DMA_NAME_SIZE / 2, "%s%d",
-				rsnd_mod_dma_name(mod), rsnd_mod_id(mod));
-	else
-		return snprintf(dma_name, DMA_NAME_SIZE / 2, "mem");
-
-}
 
 static void rsnd_dmaen_of_name(struct rsnd_mod *mod_from,
 			     struct rsnd_mod *mod_to,
 			     char *dma_name)
 {
-	int index = 0;
+	char *fmt;
+	struct rsnd_mod *mod;
+
+	if ((!mod_from && !mod_to) ||
+	    (mod_from && mod_to))
+		return;
+
+	if (mod_from) {
+		fmt = "%s%d-tx";
+		mod = mod_from;
+	} else {
+		fmt = "%s%d-rx";
+		mod = mod_to;
+	}
 
-	index = _rsnd_dmaen_of_name(dma_name + index, mod_from);
-	*(dma_name + index++) = '_';
-	index = _rsnd_dmaen_of_name(dma_name + index, mod_to);
+	snprintf(dma_name, DMA_NAME_SIZE, fmt,
+		 rsnd_mod_dma_name(mod), rsnd_mod_id(mod));
 }
 
 static void rsnd_dmaen_stop(struct rsnd_dma *dma)
-- 
1.7.9.5

[PATCH 13/19] ASoC: rsnd: remove rsnd_dma::addr

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

DMAEngine for Renesas R-Car driver is used only for Audio DMAC now.
rsnd_dma::addr was added to support Audio DMAC peri peri,
but it is no longer needed. Let's remove it

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 sound/soc/sh/rcar/dma.c |    2 --
 1 file changed, 2 deletions(-)

diff --git a/sound/soc/sh/rcar/dma.c b/sound/soc/sh/rcar/dma.c
index 5b0c344..2ab00e8 100644
--- a/sound/soc/sh/rcar/dma.c
+++ b/sound/soc/sh/rcar/dma.c
@@ -93,7 +93,6 @@ static void rsnd_dmaen_start(struct rsnd_dma *dma)
 	struct dma_async_tx_descriptor *desc;
 
 	desc = dmaengine_prep_dma_cyclic(dma->chan,
-					 (dma->addr) ? dma->addr :
 					 substream->runtime->dma_addr,
 					 snd_pcm_lib_buffer_bytes(substream),
 					 snd_pcm_lib_period_bytes(substream),
@@ -161,7 +160,6 @@ static int rsnd_dmaen_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id,
 	if (ret < 0)
 		goto rsnd_dma_init_err;
 
-	dma->addr = is_play ? cfg.src_addr : cfg.dst_addr;
 	dma->dir = is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM;
 
 	return 0;
-- 
1.7.9.5

[PATCH 14/19] ASoC: rsnd: remove rsnd_dma::dir

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

DMAEngine direction can be calculated from rsnd_dai_stream,
So, rsnd_dma::dir does not make sense now.
Let's remove it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 sound/soc/sh/rcar/dma.c  |    5 ++---
 sound/soc/sh/rcar/rsnd.h |    1 -
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/sound/soc/sh/rcar/dma.c b/sound/soc/sh/rcar/dma.c
index 2ab00e8..c03e769 100644
--- a/sound/soc/sh/rcar/dma.c
+++ b/sound/soc/sh/rcar/dma.c
@@ -91,12 +91,13 @@ static void rsnd_dmaen_start(struct rsnd_dma *dma)
 	struct snd_pcm_substream *substream = io->substream;
 	struct device *dev = rsnd_priv_to_dev(priv);
 	struct dma_async_tx_descriptor *desc;
+	int is_play = rsnd_io_is_play(io);
 
 	desc = dmaengine_prep_dma_cyclic(dma->chan,
 					 substream->runtime->dma_addr,
 					 snd_pcm_lib_buffer_bytes(substream),
 					 snd_pcm_lib_period_bytes(substream),
-					 dma->dir,
+					 is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM,
 					 DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
 
 	if (!desc) {
@@ -160,8 +161,6 @@ static int rsnd_dmaen_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id,
 	if (ret < 0)
 		goto rsnd_dma_init_err;
 
-	dma->dir = is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM;
-
 	return 0;
 
 rsnd_dma_init_err:
diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h
index 9e67142..dccf2ef 100644
--- a/sound/soc/sh/rcar/rsnd.h
+++ b/sound/soc/sh/rcar/rsnd.h
@@ -182,7 +182,6 @@ struct rsnd_dma_ops {
 struct rsnd_dma {
 	struct dma_chan		*chan;
 	struct rsnd_dma_ops	*ops;
-	enum dma_transfer_direction dir;
 	dma_addr_t		addr;
 	int			dmapp_id;
 	u32			chcr;
-- 
1.7.9.5

[PATCH 15/19] ASoC: rsnd: tidyup rcar_sound,ssi sample code

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

It was un-readable

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 .../devicetree/bindings/sound/renesas,rsnd.txt     |   40 +++++---------------
 1 file changed, 10 insertions(+), 30 deletions(-)

diff --git a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
index 2dd690b..5d9a52d 100644
--- a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
+++ b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
@@ -66,36 +66,16 @@ rcar_sound: rcar_sound@ec500000 {
 	};
 
 	rcar_sound,ssi {
-		ssi0: ssi@0 {
-			interrupts = <0 370 IRQ_TYPE_LEVEL_HIGH>;
-		};
-		ssi1: ssi@1 {
-			interrupts = <0 371 IRQ_TYPE_LEVEL_HIGH>;
-		};
-		ssi2: ssi@2 {
-			interrupts = <0 372 IRQ_TYPE_LEVEL_HIGH>;
-		};
-		ssi3: ssi@3 {
-			interrupts = <0 373 IRQ_TYPE_LEVEL_HIGH>;
-		};
-		ssi4: ssi@4 {
-			interrupts = <0 374 IRQ_TYPE_LEVEL_HIGH>;
-		};
-		ssi5: ssi@5 {
-			interrupts = <0 375 IRQ_TYPE_LEVEL_HIGH>;
-		};
-		ssi6: ssi@6 {
-			interrupts = <0 376 IRQ_TYPE_LEVEL_HIGH>;
-		};
-		ssi7: ssi@7 {
-			interrupts = <0 377 IRQ_TYPE_LEVEL_HIGH>;
-		};
-		ssi8: ssi@8 {
-			interrupts = <0 378 IRQ_TYPE_LEVEL_HIGH>;
-		};
-		ssi9: ssi@9 {
-			interrupts = <0 379 IRQ_TYPE_LEVEL_HIGH>;
-		};
+		ssi0: ssi@0 { interrupts = <0 370 IRQ_TYPE_LEVEL_HIGH>; };
+		ssi1: ssi@1 { interrupts = <0 371 IRQ_TYPE_LEVEL_HIGH>; };
+		ssi2: ssi@2 { interrupts = <0 372 IRQ_TYPE_LEVEL_HIGH>; };
+		ssi3: ssi@3 { interrupts = <0 373 IRQ_TYPE_LEVEL_HIGH>; };
+		ssi4: ssi@4 { interrupts = <0 374 IRQ_TYPE_LEVEL_HIGH>; };
+		ssi5: ssi@5 { interrupts = <0 375 IRQ_TYPE_LEVEL_HIGH>; };
+		ssi6: ssi@6 { interrupts = <0 376 IRQ_TYPE_LEVEL_HIGH>; };
+		ssi7: ssi@7 { interrupts = <0 377 IRQ_TYPE_LEVEL_HIGH>; };
+		ssi8: ssi@8 { interrupts = <0 378 IRQ_TYPE_LEVEL_HIGH>; };
+		ssi9: ssi@9 { interrupts = <0 379 IRQ_TYPE_LEVEL_HIGH>; };
 	};
 
 	rcar_sound,dai {
-- 
1.7.9.5

[PATCH 16/19] ASoC: rsnd: add sample code of rcar_sound,src irq

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

cfcefe01265cbaf5ca7209226d043b07bfa8b587
(ASoC: rsnd: add recovery support for under/over flow error on SRC)
added SRC recovery support which needs IRQ.
This patch adds SRC irq sample code on DT bingdings text

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 .../devicetree/bindings/sound/renesas,rsnd.txt     |   20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
index 5d9a52d..a5388cb 100644
--- a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
+++ b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
@@ -53,16 +53,16 @@ rcar_sound: rcar_sound@ec500000 {
 	};
 
 	rcar_sound,src {
-		src0: src@0 { };
-		src1: src@1 { };
-		src2: src@2 { };
-		src3: src@3 { };
-		src4: src@4 { };
-		src5: src@5 { };
-		src6: src@6 { };
-		src7: src@7 { };
-		src8: src@8 { };
-		src9: src@9 { };
+		src0: src@0 { interrupts = <0 352 IRQ_TYPE_LEVEL_HIGH>; };
+		src1: src@1 { interrupts = <0 353 IRQ_TYPE_LEVEL_HIGH>; };
+		src2: src@2 { interrupts = <0 354 IRQ_TYPE_LEVEL_HIGH>; };
+		src3: src@3 { interrupts = <0 355 IRQ_TYPE_LEVEL_HIGH>; };
+		src4: src@4 { interrupts = <0 356 IRQ_TYPE_LEVEL_HIGH>; };
+		src5: src@5 { interrupts = <0 357 IRQ_TYPE_LEVEL_HIGH>; };
+		src6: src@6 { interrupts = <0 358 IRQ_TYPE_LEVEL_HIGH>; };
+		src7: src@7 { interrupts = <0 359 IRQ_TYPE_LEVEL_HIGH>; };
+		src8: src@8 { interrupts = <0 360 IRQ_TYPE_LEVEL_HIGH>; };
+		src9: src@9 { interrupts = <0 361 IRQ_TYPE_LEVEL_HIGH>; };
 	};
 
 	rcar_sound,ssi {
-- 
1.7.9.5

[PATCH 17/19] ASoC: rsnd: add sample code of reg-names

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

Current rsnd driver supports reg-names, and Audio DMAC peri peri.
This patch adds sample code for it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 .../devicetree/bindings/sound/renesas,rsnd.txt     |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
index a5388cb..5e0e107 100644
--- a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
+++ b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
@@ -45,7 +45,9 @@ rcar_sound: rcar_sound@ec500000 {
 	reg =	<0 0xec500000 0 0x1000>, /* SCU */
 		<0 0xec5a0000 0 0x100>,  /* ADG */
 		<0 0xec540000 0 0x1000>, /* SSIU */
-		<0 0xec541000 0 0x1280>; /* SSI */
+		<0 0xec541000 0 0x1280>, /* SSI */
+		<0 0xec740000 0 0x200>;  /* Audio DMAC peri peri*/
+	reg-names = "scu", "adg", "ssiu", "ssi", "audmapp";
 
 	rcar_sound,dvc {
 		dvc0: dvc@0 { };
-- 
1.7.9.5

[PATCH 18/19] ASoC: rsnd: add sample code of missing clocks

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 .../devicetree/bindings/sound/renesas,rsnd.txt     |   21 ++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
index 5e0e107..3502d22 100644
--- a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
+++ b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
@@ -49,6 +49,27 @@ rcar_sound: rcar_sound@ec500000 {
 		<0 0xec740000 0 0x200>;  /* Audio DMAC peri peri*/
 	reg-names = "scu", "adg", "ssiu", "ssi", "audmapp";
 
+	clocks = <&mstp10_clks R8A7790_CLK_SSI_ALL>,
+		<&mstp10_clks R8A7790_CLK_SSI9>, <&mstp10_clks R8A7790_CLK_SSI8>,
+		<&mstp10_clks R8A7790_CLK_SSI7>, <&mstp10_clks R8A7790_CLK_SSI6>,
+		<&mstp10_clks R8A7790_CLK_SSI5>, <&mstp10_clks R8A7790_CLK_SSI4>,
+		<&mstp10_clks R8A7790_CLK_SSI3>, <&mstp10_clks R8A7790_CLK_SSI2>,
+		<&mstp10_clks R8A7790_CLK_SSI1>, <&mstp10_clks R8A7790_CLK_SSI0>,
+		<&mstp10_clks R8A7790_CLK_SCU_SRC9>, <&mstp10_clks R8A7790_CLK_SCU_SRC8>,
+		<&mstp10_clks R8A7790_CLK_SCU_SRC7>, <&mstp10_clks R8A7790_CLK_SCU_SRC6>,
+		<&mstp10_clks R8A7790_CLK_SCU_SRC5>, <&mstp10_clks R8A7790_CLK_SCU_SRC4>,
+		<&mstp10_clks R8A7790_CLK_SCU_SRC3>, <&mstp10_clks R8A7790_CLK_SCU_SRC2>,
+		<&mstp10_clks R8A7790_CLK_SCU_SRC1>, <&mstp10_clks R8A7790_CLK_SCU_SRC0>,
+		<&mstp10_clks R8A7790_CLK_SCU_DVC0>, <&mstp10_clks R8A7790_CLK_SCU_DVC1>,
+		<&audio_clk_a>, <&audio_clk_b>, <&audio_clk_c>, <&m2_clk>;
+	clock-names = "ssi-all",
+			"ssi.9", "ssi.8", "ssi.7", "ssi.6", "ssi.5",
+			"ssi.4", "ssi.3", "ssi.2", "ssi.1", "ssi.0",
+			"src.9", "src.8", "src.7", "src.6", "src.5",
+			"src.4", "src.3", "src.2", "src.1", "src.0",
+			"dvc.0", "dvc.1",
+			"clk_a", "clk_b", "clk_c", "clk_i";
+
 	rcar_sound,dvc {
 		dvc0: dvc@0 { };
 		dvc1: dvc@1 { };
-- 
1.7.9.5

[PATCH 19/19] ASoC: rsnd: add sample code of dma entry

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

rsnd driver supports Audio DMAC (via DMAEngine) /
Audio DMAC peri peri (via rsnd driver) now.
This patch adds DT binding sample code on DT binging text

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 .../devicetree/bindings/sound/renesas,rsnd.txt     |   46 ++++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
index 3502d22..2414e7e 100644
--- a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
+++ b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
@@ -11,6 +11,8 @@ Required properties:
 				  required register is
 				   SRU/ADG/SSI      if generation1
 				   SRU/ADG/SSIU/SSI if generation2
+- dma				: Should contain Audio DMAC entry
+				  (Audio DMAC peri peri entry is not needed)
 - rcar_sound,ssi		: Should contain SSI feature.
 				  The number of SSI subnode should be same as HW.
 				  see below for detail.
@@ -70,6 +72,50 @@ rcar_sound: rcar_sound@ec500000 {
 			"dvc.0", "dvc.1",
 			"clk_a", "clk_b", "clk_c", "clk_i";
 
+	dmas =		<&audma0 0x01>,	<&audma1 0x02>,	<&audma0 0x15>,	<&audma1 0x16>,
+			<&audma0 0x03>,	<&audma1 0x04>,	<&audma0 0x49>,	<&audma1 0x4a>,
+			<&audma0 0x05>,	<&audma1 0x06>,	<&audma0 0x63>,	<&audma1 0x64>,
+			<&audma0 0x07>,	<&audma1 0x08>,	<&audma0 0x6f>,	<&audma1 0x70>,
+			<&audma0 0x09>,	<&audma1 0x0a>,	<&audma0 0x71>,	<&audma1 0x72>,
+			<&audma0 0x0b>,	<&audma1 0x0c>,	<&audma0 0x73>,	<&audma1 0x74>,
+			<&audma0 0x0d>,	<&audma1 0x0e>,	<&audma0 0x75>,	<&audma1 0x76>,
+			<&audma0 0x0f>,	<&audma1 0x10>,	<&audma0 0x79>,	<&audma1 0x7a>,
+			<&audma0 0x11>,	<&audma1 0x12>,	<&audma0 0x7b>,	<&audma1 0x7c>,
+			<&audma0 0x13>,	<&audma1 0x14>,	<&audma0 0x7d>,	<&audma1 0x7e>,
+
+			<&audma0 0x85>,	<&audma1 0x9a>,	<&audma0 0xbc>,
+			<&audma0 0x87>,	<&audma1 0x9c>,	<&audma0 0xbe>,
+			<&audma0 0x89>,	<&audma1 0x9e>,
+			<&audma0 0x8b>,	<&audma1 0xa0>,
+			<&audma0 0x8d>,	<&audma1 0xb0>,
+			<&audma0 0x8f>,	<&audma1 0xb2>,
+			<&audma0 0x91>,	<&audma1 0xb4>,
+			<&audma0 0x93>,	<&audma1 0xb6>,
+			<&audma0 0x95>,	<&audma1 0xb8>,
+			<&audma0 0x97>,	<&audma1 0xba>;
+
+	dma-names =	"ssi0-rx",	"ssi0-tx",	"ssiu0-rx",	"ssiu0-tx",
+			"ssi1-rx",	"ssi1-tx",	"ssiu1-rx",	"ssiu1-tx",
+			"ssi2-rx",	"ssi2-tx",	"ssiu2-rx",	"ssiu2-tx",
+			"ssi3-rx",	"ssi3-tx",	"ssiu3-rx",	"ssiu3-tx",
+			"ssi4-rx",	"ssi4-tx",	"ssiu4-rx",	"ssiu4-tx",
+			"ssi5-rx",	"ssi5-tx",	"ssiu5-rx",	"ssiu5-tx",
+			"ssi6-rx",	"ssi6-tx",	"ssiu6-rx",	"ssiu6-tx",
+			"ssi7-rx",	"ssi7-tx",	"ssiu7-rx",	"ssiu7-tx",
+			"ssi8-rx",	"ssi8-tx",	"ssiu8-rx",	"ssiu8-tx",
+			"ssi9-rx",	"ssi9-tx",	"ssiu9-rx",	"ssiu9-tx",
+
+			"src0-rx",	"src0-tx",	"dvc0-tx",
+			"src1-rx",	"src1-tx",	"dvc1-tx",
+			"src2-rx",	"src2-tx",
+			"src3-rx",	"src3-tx",
+			"src4-rx",	"src4-tx",
+			"src5-rx",	"src5-tx",
+			"src6-rx",	"src6-tx",
+			"src7-rx",	"src7-tx",
+			"src8-rx",	"src8-tx",
+			"src9-rx",	"src9-tx";
+
 	rcar_sound,dvc {
 		dvc0: dvc@0 { };
 		dvc1: dvc@1 { };
-- 
1.7.9.5

Re: [PATCH 0/19] ASoC: rsnd: move 2nd DMAC from DMAEngine to rsnd driver

[Arnd Bergmann]

On Thursday 19 February 2015 03:50:14 Kuninori Morimoto wrote:
> Hi Mark, Arnd, Vinod
> Cc: Laurent, SH-ML
> 
> Renesas R-Car sound (= rsnd) needs 2 DMAC which are called as
> Audio DMAC (= 1st DMAC) and Audio DMAC peri peri (2nd DMAC).
> And rsnd had assumed that 1st / 2nd DMACs are implemented as DMAEngine.
> But, in result of DMA ML long term discussion, 2nd DMAC was concluded
> that it is not a general purpose DMAC (2nd DMAC is for Device to Device
> inside sound system). Additionally, current DMAEngine can't support Device
> to Device, and we don't have correct DT bindings for it at this point.
> So the easiest solution for it is that move it from DMAEngine to rsnd
> driver.
> http://thread.gmane.org/gmane.linux.ports.sh.devel/41063/focusC829
> 
> These patches add Audio DMAC peri peri implementation in rsnd driver.
> I will remove current DMAEngine side Audio DMAC peri peri implement
> if these are accepted.
> 
> Arnd, Vinod
> 
> I'm happy if you can send Ack for these patches

Looks very good overall, I just have one more idea for simplifying
the binding, please see if that can work or not:

I see that there are already subnodes for the individual ssi, src, dvc
and dai nodes, which contain among other things the interrupt lines
like

                ssi3: ssi@3 {
                        interrupts = <0 373 IRQ_TYPE_LEVEL_HIGH>;
                };


It seems that you are adding for the same set of devices a dma
line per subdevice, but have chosen to have them all in the parent
node:

       dma-names =     "ssi0-rx",      "ssi0-tx",      "ssiu0-rx",     "ssiu0-tx",
		...


Have you considered moving the channels into the slave nodes to avoid
having to construct the names? I think it can just look like

                ssi3: ssi@3 {
                       interrupts = <0 373 IRQ_TYPE_LEVEL_HIGH>;
			dmas = <&audma0 0x07>, <&audma1 0x08>,
				<&audma0 0x6f>, <&audma1 0x70>;
			dma-names = "rx", "tx", "rxu", "txu";
                };

which would be a more logical structure.

	Arnd

Re: [PATCH 0/19] ASoC: rsnd: move 2nd DMAC from DMAEngine to rsnd driver

[Arnd Bergmann]

On Thursday 19 February 2015 03:50:14 Kuninori Morimoto wrote:
> Hi Mark, Arnd, Vinod
> Cc: Laurent, SH-ML
> 
> Renesas R-Car sound (= rsnd) needs 2 DMAC which are called as
> Audio DMAC (= 1st DMAC) and Audio DMAC peri peri (2nd DMAC).
> And rsnd had assumed that 1st / 2nd DMACs are implemented as DMAEngine.
> But, in result of DMA ML long term discussion, 2nd DMAC was concluded
> that it is not a general purpose DMAC (2nd DMAC is for Device to Device
> inside sound system). Additionally, current DMAEngine can't support Device
> to Device, and we don't have correct DT bindings for it at this point.
> So the easiest solution for it is that move it from DMAEngine to rsnd
> driver.
> http://thread.gmane.org/gmane.linux.ports.sh.devel/41063/focus=43829
> 
> These patches add Audio DMAC peri peri implementation in rsnd driver.
> I will remove current DMAEngine side Audio DMAC peri peri implement
> if these are accepted.
> 
> Arnd, Vinod
> 
> I'm happy if you can send Ack for these patches

Looks very good overall, I just have one more idea for simplifying
the binding, please see if that can work or not:

I see that there are already subnodes for the individual ssi, src, dvc
and dai nodes, which contain among other things the interrupt lines
like

                ssi3: ssi@3 {
                        interrupts = <0 373 IRQ_TYPE_LEVEL_HIGH>;
                };


It seems that you are adding for the same set of devices a dma
line per subdevice, but have chosen to have them all in the parent
node:

       dma-names =     "ssi0-rx",      "ssi0-tx",      "ssiu0-rx",     "ssiu0-tx",
		...


Have you considered moving the channels into the slave nodes to avoid
having to construct the names? I think it can just look like

                ssi3: ssi@3 {
                       interrupts = <0 373 IRQ_TYPE_LEVEL_HIGH>;
			dmas = <&audma0 0x07>, <&audma1 0x08>,
				<&audma0 0x6f>, <&audma1 0x70>;
			dma-names = "rx", "tx", "rxu", "txu";
                };

which would be a more logical structure.

	Arnd

Re: [PATCH 0/19] ASoC: rsnd: move 2nd DMAC from DMAEngine to rsnd driver

[Kuninori Morimoto]

Hi Arnd

> Looks very good overall, I just have one more idea for simplifying
> the binding, please see if that can work or not:
(snip)
>                 ssi3: ssi@3 {
>                        interrupts = <0 373 IRQ_TYPE_LEVEL_HIGH>;
> 			dmas = <&audma0 0x07>, <&audma1 0x08>,
> 				<&audma0 0x6f>, <&audma1 0x70>;
> 			dma-names = "rx", "tx", "rxu", "txu";
>                 };

I tried this idea before, but I got issues on DT.
I forgot detail, but if my memory was correct, it was
dev->of_node.

	sound {
		...
		ssi3: ssi@3 {
			interrupts = <0 373 IRQ_TYPE_LEVEL_HIGH>;
			dmas = <&audma0 0x07>, <&audma1 0x08>, <&audma0 0x6f>, <&audma1 0x70>;
			dma-names = "rx", "tx", "rxu", "txu";
		};
	}

dma_request_slave_channel_compat() requests "dev",
and this dev means sound here.

This "dev" will be used in dma_request_slave_channel_reason()
and, it uses "dev->of_node".
But, here, "dev->of_node" means "sound" here.

If I use your style, I need to do like below,
or I need new compat function which can select of_node.

	tmp_node = dev->of_node;
	dev->of_node = subnode;
	dma_request_slave_channel_compat(... dev ...);
	dev->of_node = tmp_node;


Best regards
---
Kuninori Morimoto

Re: [PATCH 0/19] ASoC: rsnd: move 2nd DMAC from DMAEngine to rsnd driver

[Arnd Bergmann]

On Thursday 19 February 2015 08:44:30 Kuninori Morimoto wrote:
> I tried this idea before, but I got issues on DT.
> I forgot detail, but if my memory was correct, it was
> dev->of_node.
> 
>         sound {
>                 ...
>                 ssi3: ssi@3 {
>                         interrupts = <0 373 IRQ_TYPE_LEVEL_HIGH>;
>                         dmas = <&audma0 0x07>, <&audma1 0x08>, <&audma0 0x6f>, <&audma1 0x70>;
>                         dma-names = "rx", "tx", "rxu", "txu";
>                 };
>         }
> 
> dma_request_slave_channel_compat() requests "dev",
> and this dev means sound here.
> 
> This "dev" will be used in dma_request_slave_channel_reason()
> and, it uses "dev->of_node".
> But, here, "dev->of_node" means "sound" here.
> 
> If I use your style, I need to do like below,
> or I need new compat function which can select of_node.
> 
>         tmp_node = dev->of_node;
>         dev->of_node = subnode;
>         dma_request_slave_channel_compat(... dev ...);
>         dev->of_node = tmp_node;

Ah, I see. I think the best way around this then would be to use
of_dma_request_slave_channel(), which takes a device node pointer
and a name argument as you need here.

Doing this will require marking that function as EXPORT_SYMBOL_GPL(),
but I see no problem with that.

I see you use dma_request_slave_channel_compat here. Does that mean
you have to support boards with this sound device that do not use DT?
If so, you will also have to split the request function like

	if (of_node)
		chan = of_dma_request_slave_channel(of_node, "rx");
	else
		chan = dma_request_channel(mask, filter, arg);

	Arnd

Re: [PATCH 0/19] ASoC: rsnd: move 2nd DMAC from DMAEngine to rsnd driver

[Arnd Bergmann]

On Thursday 19 February 2015 08:44:30 Kuninori Morimoto wrote:
> I tried this idea before, but I got issues on DT.
> I forgot detail, but if my memory was correct, it was
> dev->of_node.
> 
>         sound {
>                 ...
>                 ssi3: ssi@3 {
>                         interrupts = <0 373 IRQ_TYPE_LEVEL_HIGH>;
>                         dmas = <&audma0 0x07>, <&audma1 0x08>, <&audma0 0x6f>, <&audma1 0x70>;
>                         dma-names = "rx", "tx", "rxu", "txu";
>                 };
>         }
> 
> dma_request_slave_channel_compat() requests "dev",
> and this dev means sound here.
> 
> This "dev" will be used in dma_request_slave_channel_reason()
> and, it uses "dev->of_node".
> But, here, "dev->of_node" means "sound" here.
> 
> If I use your style, I need to do like below,
> or I need new compat function which can select of_node.
> 
>         tmp_node = dev->of_node;
>         dev->of_node = subnode;
>         dma_request_slave_channel_compat(... dev ...);
>         dev->of_node = tmp_node;

Ah, I see. I think the best way around this then would be to use
of_dma_request_slave_channel(), which takes a device node pointer
and a name argument as you need here.

Doing this will require marking that function as EXPORT_SYMBOL_GPL(),
but I see no problem with that.

I see you use dma_request_slave_channel_compat here. Does that mean
you have to support boards with this sound device that do not use DT?
If so, you will also have to split the request function like

	if (of_node)
		chan = of_dma_request_slave_channel(of_node, "rx");
	else
		chan = dma_request_channel(mask, filter, arg);

	Arnd

Re: [PATCH 0/19] ASoC: rsnd: move 2nd DMAC from DMAEngine to rsnd driver

[Kuninori Morimoto]

Hi Arnd
Cc Magnus, Simon

> Doing this will require marking that function as EXPORT_SYMBOL_GPL(),
> but I see no problem with that.
> 
> I see you use dma_request_slave_channel_compat here. Does that mean
> you have to support boards with this sound device that do not use DT?
> If so, you will also have to split the request function like
> 
> 	if (of_node)
> 		chan = of_dma_request_slave_channel(of_node, "rx");
> 	else
> 		chan = dma_request_channel(mask, filter, arg);

Hmm... I can do this.
Current sound driver is used for Gen1 / Gen2 board.
Today, all Gen2 boards are boot from DT.
My last concern is Gen1 which boot from non-DT. But today,
Gen1 board (= bockw) can boot from DT (?)

Simon, Magnus

I think bockw can boot from DT today, and legacy bockw
(= non-DT) code will be removed from upstream ?
If so, sound driver can care only DT.
anyway, sound driver doesn't need
dma_request_slave_channel_compat() anymore ?