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

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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 738b49efe6 ("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>
This commit is contained in:
Kuninori Morimoto
2020-06-16 14:19:41 +09:00
committed by Mark Brown
parent 3bd057c821
commit cf6e26c71b
21 changed files with 69 additions and 204 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
sound/soc/soc-component.c
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@@ -407,41 +407,30 @@ EXPORT_SYMBOL_GPL(snd_soc_component_exit_regmap);
* snd_soc_component_read() - Read register value
* @component: Component to read from
* @reg: Register to read
* @val: Pointer to where the read value is stored
*
* Return: 0 on success, a negative error code otherwise.
* Return: read value
*/
int snd_soc_component_read(struct snd_soc_component *component,
unsigned int reg, unsigned int *val)
unsigned int snd_soc_component_read(struct snd_soc_component *component,
unsigned int reg)
{
int ret;
unsigned int val = 0;
if (component->regmap)
ret = regmap_read(component->regmap, reg, val);
ret = regmap_read(component->regmap, reg, &val);
else if (component->driver->read) {
*val = component->driver->read(component, reg);
ret = 0;
val = component->driver->read(component, reg);
}
else
ret = -EIO;
return soc_component_ret(component, ret);
}
EXPORT_SYMBOL_GPL(snd_soc_component_read);
unsigned int snd_soc_component_read32(struct snd_soc_component *component,
unsigned int reg)
{
unsigned int val;
int ret;
ret = snd_soc_component_read(component, reg, &val);
if (ret < 0)
return soc_component_ret(component, -1);
soc_component_ret(component, ret);
return val;
}
EXPORT_SYMBOL_GPL(snd_soc_component_read32);
EXPORT_SYMBOL_GPL(snd_soc_component_read);
/**
* snd_soc_component_write() - Write register value
@@ -470,19 +459,17 @@ static int snd_soc_component_update_bits_legacy(
unsigned int mask, unsigned int val, bool *change)
{
unsigned int old, new;
int ret;
int ret = 0;
mutex_lock(&component->io_mutex);
ret = snd_soc_component_read(component, reg, &old);
if (ret < 0)
goto out_unlock;
old = snd_soc_component_read(component, reg);
new = (old & ~mask) | (val & mask);
*change = old != new;
if (*change)
ret = snd_soc_component_write(component, reg, new);
out_unlock:
mutex_unlock(&component->io_mutex);
return soc_component_ret(component, ret);
@@ -584,11 +571,8 @@ int snd_soc_component_test_bits(struct snd_soc_component *component,
unsigned int reg, unsigned int mask, unsigned int value)
{
unsigned int old, new;
int ret;
ret = snd_soc_component_read(component, reg, &old);
if (ret < 0)
return soc_component_ret(component, ret);
old = snd_soc_component_read(component, reg);
new = (old & ~mask) | value;
return old != new;
}