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Subject[PATCH v1 1/3] ASoC: rsnd: Support hw_free() callback at DAI level
Date
From: Timo Wischer <twischer@de.adit-jv.com>

This patch provides the needed infrastructure to support calling hw_free()
at the DAI level. This is for example required to free resources allocated
in hw_params() callback.

The modification of __rsnd_mod_add_hw_params does not have any side
effects because rsnd_mod_ops::hw_params callback is not used by anyone
until now.

Signed-off-by: Timo Wischer <twischer@de.adit-jv.com>
Signed-off-by: Jiada Wang <jiada_wang@mentor.com>
---
sound/soc/sh/rcar/core.c | 16 +++++++++++++++-
sound/soc/sh/rcar/rsnd.h | 12 +++++++++---
2 files changed, 24 insertions(+), 4 deletions(-)

diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
index 56e8dae9a15c..bda5b958d0dc 100644
--- a/sound/soc/sh/rcar/core.c
+++ b/sound/soc/sh/rcar/core.c
@@ -1421,6 +1421,20 @@ static int rsnd_hw_params(struct snd_pcm_substream *substream,
params_buffer_bytes(hw_params));
}

+static int rsnd_hw_free(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
+ struct rsnd_dai *rdai = rsnd_dai_to_rdai(dai);
+ struct rsnd_dai_stream *io = rsnd_rdai_to_io(rdai, substream);
+ int ret;
+
+ ret = rsnd_dai_call(hw_free, io, substream);
+ if (ret)
+ return ret;
+
+ return snd_pcm_lib_free_pages(substream);
+}
+
static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
{
struct snd_soc_dai *dai = rsnd_substream_to_dai(substream);
@@ -1436,7 +1450,7 @@ static snd_pcm_uframes_t rsnd_pointer(struct snd_pcm_substream *substream)
static const struct snd_pcm_ops rsnd_pcm_ops = {
.ioctl = snd_pcm_lib_ioctl,
.hw_params = rsnd_hw_params,
- .hw_free = snd_pcm_lib_free_pages,
+ .hw_free = rsnd_hw_free,
.pointer = rsnd_pointer,
};

diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h
index 7727add3eb1a..ea6cbaa9743e 100644
--- a/sound/soc/sh/rcar/rsnd.h
+++ b/sound/soc/sh/rcar/rsnd.h
@@ -327,6 +327,9 @@ struct rsnd_mod_ops {
int (*cleanup)(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv);
+ int (*hw_free)(struct rsnd_mod *mod,
+ struct rsnd_dai_stream *io,
+ struct snd_pcm_substream *substream);
u32 *(*get_status)(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
enum rsnd_mod_type type);
@@ -351,12 +354,12 @@ struct rsnd_mod {
*
* B 0: init 1: quit
* C 0: start 1: stop
+ * D 0: hw_params 1: hw_free
*
* H is always called (see __rsnd_mod_call)
* H 0: probe 1: remove
* H 0: pcm_new
* H 0: fallback
- * H 0: hw_params
* H 0: pointer
* H 0: prepare
* H 0: cleanup
@@ -365,12 +368,13 @@ struct rsnd_mod {
#define __rsnd_mod_shift_quit 4
#define __rsnd_mod_shift_start 8
#define __rsnd_mod_shift_stop 8
+#define __rsnd_mod_shift_hw_params 12
+#define __rsnd_mod_shift_hw_free 12
#define __rsnd_mod_shift_probe 28 /* always called */
#define __rsnd_mod_shift_remove 28 /* always called */
#define __rsnd_mod_shift_irq 28 /* always called */
#define __rsnd_mod_shift_pcm_new 28 /* always called */
#define __rsnd_mod_shift_fallback 28 /* always called */
-#define __rsnd_mod_shift_hw_params 28 /* always called */
#define __rsnd_mod_shift_pointer 28 /* always called */
#define __rsnd_mod_shift_prepare 28 /* always called */
#define __rsnd_mod_shift_cleanup 28 /* always called */
@@ -383,10 +387,11 @@ struct rsnd_mod {
#define __rsnd_mod_add_quit -1
#define __rsnd_mod_add_start 1
#define __rsnd_mod_add_stop -1
+#define __rsnd_mod_add_hw_params 1
+#define __rsnd_mod_add_hw_free -1
#define __rsnd_mod_add_irq 0
#define __rsnd_mod_add_pcm_new 0
#define __rsnd_mod_add_fallback 0
-#define __rsnd_mod_add_hw_params 0
#define __rsnd_mod_add_pointer 0

#define __rsnd_mod_call_probe 0
@@ -402,6 +407,7 @@ struct rsnd_mod {
#define __rsnd_mod_call_fallback 0
#define __rsnd_mod_call_hw_params 0
#define __rsnd_mod_call_pointer 0
+#define __rsnd_mod_call_hw_free 1

#define rsnd_mod_to_priv(mod) ((mod)->priv)
#define rsnd_mod_power_on(mod) clk_enable((mod)->clk)
--
2.19.2
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