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ASoC: max98088 codec: Catch driver bugs for eq channel name

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Move the EQ channel names to a separate array and iterate over it in
max98088_get_channel rather than duplicating the hardcoded channel
names. Add an error message if an invalid channel is passed and check
the error in the callers.

Also added a BUILD_BUG_ON to ensure that the eq_mode_name and controls
arrays are the same size.

Signed-off-by: Ryan Mallon <rmallon@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Ryan Mallon 2011-10-04 09:55:40 +11:00 committed by Mark Brown
parent 81204c84ca
commit 8754f2263f
1 changed files with 23 additions and 11 deletions
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34
sound/soc/codecs/max98088.c
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@ -1696,13 +1696,19 @@ static struct snd_soc_dai_driver max98088_dai[] = {
}
};
static int max98088_get_channel(const char *name)
static const char *eq_mode_name[] = {"EQ1 Mode", "EQ2 Mode"};
static int max98088_get_channel(struct snd_soc_codec *codec, const char *name)
{
if (strcmp(name, "EQ1 Mode") == 0)
return 0;
if (strcmp(name, "EQ2 Mode") == 0)
return 1;
return -EINVAL;
int i;
for (i = 0; i < ARRAY_SIZE(eq_mode_name); i++)
if (strcmp(name, eq_mode_name[i]) == 0)
return i;
/* Shouldn't happen */
dev_err(codec->dev, "Bad EQ channel name '%s'\n", name);
return -EINVAL;
}
static void max98088_setup_eq1(struct snd_soc_codec *codec)
@ -1806,10 +1812,13 @@ static int max98088_put_eq_enum(struct snd_kcontrol *kcontrol,
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct max98088_priv *max98088 = snd_soc_codec_get_drvdata(codec);
struct max98088_pdata *pdata = max98088->pdata;
int channel = max98088_get_channel(kcontrol->id.name);
int channel = max98088_get_channel(codec, kcontrol->id.name);
struct max98088_cdata *cdata;
int sel = ucontrol->value.integer.value[0];
if (channel < 0)
return channel;
cdata = &max98088->dai[channel];
if (sel >= pdata->eq_cfgcnt)
@ -1834,9 +1843,12 @@ static int max98088_get_eq_enum(struct snd_kcontrol *kcontrol,
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct max98088_priv *max98088 = snd_soc_codec_get_drvdata(codec);
int channel = max98088_get_channel(kcontrol->id.name);
int channel = max98088_get_channel(codec, kcontrol->id.name);
struct max98088_cdata *cdata;
if (channel < 0)
return channel;
cdata = &max98088->dai[channel];
ucontrol->value.enumerated.item[0] = cdata->eq_sel;
return 0;
@ -1851,17 +1863,17 @@ static void max98088_handle_eq_pdata(struct snd_soc_codec *codec)
int i, j;
const char **t;
int ret;
struct snd_kcontrol_new controls[] = {
SOC_ENUM_EXT("EQ1 Mode",
SOC_ENUM_EXT((char *)eq_mode_name[0],
max98088->eq_enum,
max98088_get_eq_enum,
max98088_put_eq_enum),
SOC_ENUM_EXT("EQ2 Mode",
SOC_ENUM_EXT((char *)eq_mode_name[1],
max98088->eq_enum,
max98088_get_eq_enum,
max98088_put_eq_enum),
};
BUILD_BUG_ON(ARRAY_SIZE(controls) != ARRAY_SIZE(eq_mode_name));
cfg = pdata->eq_cfg;
cfgcnt = pdata->eq_cfgcnt;