ASoC: soc-component: merge snd_soc_component_read() and snd_soc_component_read32()

We had read/write function for Codec, Platform, etc,
but these has been merged into snd_soc_component_read/write().

Internally, it is using regmap or driver function.
In read case, each styles are like below

regmap
	ret = regmap_read(..., reg, &val);

driver function
	val = xxx->read(..., reg);

Because of this kind of different style, to keep same read style,
when we merged each read function into snd_soc_component_read(),
we created snd_soc_component_read32(), like below.
commit 738b49efe6c6 ("ASoC: add snd_soc_component_read32")

(1)	val = snd_soc_component_read32(component, reg);

(2)	ret = snd_soc_component_read(component, reg, &val);

Many drivers are using snd_soc_component_read32(), and
some drivers are using snd_soc_component_read() today.

In generally, we don't check read function successes,
because, we will have many other issues at initial timing
if read function didn't work.

Now we can use soc_component_err() when error case.
This means, it is easy to notice if error occurred.

This patch aggressively merge snd_soc_component_read() and _read32(),
and makes snd_soc_component_read/write() as generally style.

This patch do
	1) merge snd_soc_component_read() and snd_soc_component_read32()
	2) it uses soc_component_err() when error case (easy to notice)
	3) keeps read32 for now by #define
	4) update snd_soc_component_read() for all drivers

Because _read() user drivers are not too many, this patch changes
all user drivers.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/87sgev4mfl.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>

2 files changed, 3 insertions, 12 deletions

diff --git a/sound/soc/fsl/fsl_audmix.c b/sound/soc/fsl/fsl_audmix.c
index 8b9027f76d8a..a447bafa00d2 100644
--- a/sound/soc/fsl/fsl_audmix.c
+++ b/sound/soc/fsl/fsl_audmix.c
@@ -116,13 +116,9 @@ static int fsl_audmix_put_mix_clk_src(struct snd_kcontrol *kcontrol,
 	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
 	unsigned int *item = ucontrol->value.enumerated.item;
 	unsigned int reg_val, val, mix_clk;
-	int ret;
 
 	/* Get current state */
-	ret = snd_soc_component_read(comp, FSL_AUDMIX_CTR, &reg_val);
-	if (ret)
-		return ret;
-
+	reg_val = snd_soc_component_read(comp, FSL_AUDMIX_CTR);
 	mix_clk = ((reg_val & FSL_AUDMIX_CTR_MIXCLK_MASK)
 			>> FSL_AUDMIX_CTR_MIXCLK_SHIFT);
 	val = snd_soc_enum_item_to_val(e, item[0]);
@@ -162,9 +158,7 @@ static int fsl_audmix_put_out_src(struct snd_kcontrol *kcontrol,
 	int ret;
 
 	/* Get current state */
-	ret = snd_soc_component_read(comp, FSL_AUDMIX_CTR, &reg_val);
-	if (ret)
-		return ret;
+	reg_val = snd_soc_component_read(comp, FSL_AUDMIX_CTR);
 
 	/* "From" state */
 	out_src = ((reg_val & FSL_AUDMIX_CTR_OUTSRC_MASK)
diff --git a/sound/soc/fsl/fsl_easrc.c b/sound/soc/fsl/fsl_easrc.c
index 2f6b3d8bfcfc..58cc093ad741 100644
--- a/sound/soc/fsl/fsl_easrc.c
+++ b/sound/soc/fsl/fsl_easrc.c
@@ -79,11 +79,8 @@ static int fsl_easrc_get_reg(struct snd_kcontrol *kcontrol,
 	struct soc_mreg_control *mc =
 		(struct soc_mreg_control *)kcontrol->private_value;
 	unsigned int regval;
-	int ret;
 
-	ret = snd_soc_component_read(component, mc->regbase, &regval);
-	if (ret < 0)
-		return ret;
+	regval = snd_soc_component_read(component, mc->regbase);
 
 	ucontrol->value.integer.value[0] = regval;