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authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>2020-06-16 08:19:41 +0300
committerMark Brown <broonie@kernel.org>2020-06-22 17:13:36 +0300
commitcf6e26c71bfdff823fd40945b07666d75f1e1412 (patch)
tree442165e2d0a1605c68d5b3522772790e95afaa3c /sound/soc/soc-component.c
parent3bd057c8219d4006f2b436cea2ae5ac723067a51 (diff)
downloadlinux-cf6e26c71bfdff823fd40945b07666d75f1e1412.tar.xz
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>
Diffstat (limited to 'sound/soc/soc-component.c')
-rw-r--r--sound/soc/soc-component.c40
1 files changed, 12 insertions, 28 deletions
diff --git a/sound/soc/soc-component.c b/sound/soc/soc-component.c
index d121f5f7633c..428f88decfdb 100644
--- a/sound/soc/soc-component.c
+++ b/sound/soc/soc-component.c
@@ -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;
}