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ASoC: dapm: Change prototype of soc_widget_read 

soc_widget_read API returns the register data and it is possible
that a register can contain 0xffffffff. Thus, change the prototype
of soc_widget_read to return only the error code and pass the reg
data through pointer argument.

Signed-off-by: Arun Shamanna Lakshmi <aruns@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Arun Shamanna Lakshmi 2014-01-14 15:31:54 -08:00 committed by Mark Brown
parent b893ea5f1c
commit f7d3c17096
1 changed files with 15 additions and 11 deletions
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26
sound/soc/soc-dapm.c
View File

@ -371,12 +371,16 @@ static void dapm_reset(struct snd_soc_card *card)
}
}
static int soc_widget_read(struct snd_soc_dapm_widget *w, int reg)
static int soc_widget_read(struct snd_soc_dapm_widget *w, int reg,
unsigned int *value)
{
if (w->codec)
return snd_soc_read(w->codec, reg);
else if (w->platform)
return snd_soc_platform_read(w->platform, reg);
if (w->codec) {
*value = snd_soc_read(w->codec, reg);
return 0;
} else if (w->platform) {
*value = snd_soc_platform_read(w->platform, reg);
return 0;
}
dev_err(w->dapm->dev, "ASoC: no valid widget read method\n");
return -1;
@ -430,13 +434,12 @@ static int soc_widget_update_bits_locked(struct snd_soc_dapm_widget *w,
return ret;
} else {
soc_widget_lock(w);
ret = soc_widget_read(w, reg);
ret = soc_widget_read(w, reg, &old);
if (ret < 0) {
soc_widget_unlock(w);
return ret;
}
old = ret;
new = (old & ~mask) | (value & mask);
change = old != new;
if (change) {
@ -513,7 +516,7 @@ static void dapm_set_path_status(struct snd_soc_dapm_widget *w,
unsigned int invert = mc->invert;
if (reg != SND_SOC_NOPM) {
val = soc_widget_read(w, reg);
soc_widget_read(w, reg, &val);
val = (val >> shift) & mask;
if (invert)
val = max - val;
@ -529,7 +532,7 @@ static void dapm_set_path_status(struct snd_soc_dapm_widget *w,
w->kcontrol_news[i].private_value;
int val, item;
val = soc_widget_read(w, e->reg);
soc_widget_read(w, e->reg, &val);
item = (val >> e->shift_l) & e->mask;
if (item < e->max && !strcmp(p->name, e->texts[item]))
@ -558,7 +561,7 @@ static void dapm_set_path_status(struct snd_soc_dapm_widget *w,
w->kcontrol_news[i].private_value;
int val, item;
val = soc_widget_read(w, e->reg);
soc_widget_read(w, e->reg, &val);
val = (val >> e->shift_l) & e->mask;
for (item = 0; item < e->max; item++) {
if (val == e->values[item])
@ -2782,7 +2785,8 @@ int snd_soc_dapm_new_widgets(struct snd_soc_card *card)
/* Read the initial power state from the device */
if (w->reg >= 0) {
val = soc_widget_read(w, w->reg) >> w->shift;
soc_widget_read(w, w->reg, &val);
val = val >> w->shift;
val &= w->mask;
if (val == w->on_val)
w->power = 1;