linux-kernel - [RFC PATCH 2/6] ALSA: pcm: Export constraints initialization functions

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Date:   Wed, 19 May 2021 13:48:38 +0300
From:   Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>
To:     <alsa-devel@...a-project.org>, <linux-kernel@...r.kernel.org>
CC:     <perex@...ex.cz>, <tiwai@...e.com>,
        <pierre-louis.bossart@...ux.intel.com>, <broonie@...nel.org>,
        <joe@...ches.com>, <lgirdwood@...il.com>, <lars@...afoo.de>,
        <kuninori.morimoto.gx@...esas.com>, <nicolas.ferre@...rochip.com>,
        <Cristian.Birsan@...rochip.com>,
        Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>
Subject: [RFC PATCH 2/6] ALSA: pcm: Export constraints initialization functions

Export the functions needed to initialize the constraints. These functions
will be used in soc-pcm to initialize the BE constraints.

Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@...rochip.com>
---
 include/sound/pcm.h     | 3 +++
 sound/core/pcm_native.c | 6 ++++--
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/include/sound/pcm.h b/include/sound/pcm.h
index 025b4d2ba0fe..2907ed2b937f 100644
--- a/include/sound/pcm.h
+++ b/include/sound/pcm.h
@@ -1021,6 +1021,9 @@ int snd_pcm_hw_rule_add(struct snd_pcm_runtime *runtime,
 			snd_pcm_hw_rule_func_t func, void *private,
 			int dep, ...);
 
+int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream);
+int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream);
+
 /**
  * snd_pcm_hw_constraint_single() - Constrain parameter to a single value
  * @runtime: PCM runtime instance
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 8dbe86cf2e4f..54e0eab2a57e 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -2400,7 +2400,7 @@ static int snd_pcm_hw_rule_buffer_bytes_max(struct snd_pcm_hw_params *params,
 	return snd_interval_refine(hw_param_interval(params, rule->var), &t);
 }		
 
-static int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream)
+int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream)
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	struct snd_pcm_hw_constraints *constrs = &runtime->hw_constraints;
@@ -2523,8 +2523,9 @@ static int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream)
 		return err;
 	return 0;
 }
+EXPORT_SYMBOL(snd_pcm_hw_constraints_init);
 
-static int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream)
+int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream)
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	struct snd_pcm_hardware *hw = &runtime->hw;
@@ -2607,6 +2608,7 @@ static int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream)
 
 	return 0;
 }
+EXPORT_SYMBOL(snd_pcm_hw_constraints_complete);
 
 static void pcm_release_private(struct snd_pcm_substream *substream)
 {
-- 
2.27.0