ASoC: soc-pcm: unpack dpcm_set_fe_runtime()

dpcm_fe_dai_startup() (= A) calls dpcm_set_fe_runtime() (= B) to setup
DPCM runtime. From *naming point of view*, it sounds like setup function
for FE.

(A)	static int dpcm_fe_dai_startup(...)
	{
		...
(B)		dpcm_set_fe_runtime(...);
		...
	}

But in dpcm_set_fe_runtime() (= B),
It  setups FE by dpcm_runtime_setup_fe() (= X),
and setups BE by dpcm_runtime_merge_xxx() (= Y).

(B)	static void dpcm_set_fe_runtime(...)
	{
		...
(X)		dpcm_runtime_setup_fe(...);

 ^		dpcm_runtime_setup_be_format(...);
(Y)		dpcm_runtime_setup_be_chan(...);
 v		dpcm_runtime_setup_be_rate(...);
	}

These means that the function which is called as xxx_fe_xxx()
is setups both FE and BE. This is confusable and can be hot bed for bug.

Now dpcm_set_fe_runtime() (= B) is simple enough and confusable naming,
let's unpack it at dpcm_fe_dai_startup().
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87mtvxvsgn.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/soc-pcm.c

@@ -1678,15 +1678,6 @@ static void dpcm_runtime_setup_be_rate(struct snd_pcm_substream *substream)
 	}
 }
 
-static void dpcm_set_fe_runtime(struct snd_pcm_substream *substream)
-{
-	dpcm_runtime_setup_fe(substream);
-
-	dpcm_runtime_setup_be_format(substream);
-	dpcm_runtime_setup_be_chan(substream);
-	dpcm_runtime_setup_be_rate(substream);
-}
-
 static int dpcm_apply_symmetry(struct snd_pcm_substream *fe_substream,
 			       int stream)
 {
@@ -1766,7 +1757,11 @@ static int dpcm_fe_dai_startup(struct snd_pcm_substream *fe_substream)
 
 	fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
 
-	dpcm_set_fe_runtime(fe_substream);
+	dpcm_runtime_setup_fe(fe_substream);
+
+	dpcm_runtime_setup_be_format(fe_substream);
+	dpcm_runtime_setup_be_chan(fe_substream);
+	dpcm_runtime_setup_be_rate(fe_substream);
 
 	ret = dpcm_apply_symmetry(fe_substream, stream);
 	if (ret < 0)