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ASoC: tpa6130a2: Error handling for broken chip 

Correct/Implement handling of broken chip.
Fail the i2c_prope if the communication with the chip
fails.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
This commit is contained in:
Peter Ujfalusi 2010-10-21 15:03:03 +03:00 committed by Liam Girdwood
parent cf4bb69884
commit 872a64d7e7
1 changed files with 22 additions and 6 deletions
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28
sound/soc/codecs/tpa6130a2.c
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@ -98,16 +98,21 @@ static u8 tpa6130a2_read(int reg)
return data->regs[reg];
}
static void tpa6130a2_initialize(void)
static int tpa6130a2_initialize(void)
{
struct tpa6130a2_data *data;
int i;
int i, ret = 0;
BUG_ON(tpa6130a2_client == NULL);
data = i2c_get_clientdata(tpa6130a2_client);
for (i = 1; i < TPA6130A2_REG_VERSION; i++)
tpa6130a2_i2c_write(i, data->regs[i]);
for (i = 1; i < TPA6130A2_REG_VERSION; i++) {
ret = tpa6130a2_i2c_write(i, data->regs[i]);
if (ret < 0)
break;
}
return ret;
}
static int tpa6130a2_power(int power)
@ -133,7 +138,16 @@ static int tpa6130a2_power(int power)
}
data->power_state = 1;
tpa6130a2_initialize();
ret = tpa6130a2_initialize();
if (ret < 0) {
dev_err(&tpa6130a2_client->dev,
"Failed to initialize chip\n");
if (data->power_gpio >= 0)
gpio_set_value(data->power_gpio, 0);
regulator_disable(data->supply);
data->power_state = 0;
goto exit;
}
/* Clear SWS */
val = tpa6130a2_read(TPA6130A2_REG_CONTROL);
@ -375,7 +389,9 @@ int tpa6130a2_add_controls(struct snd_soc_codec *codec)
{
struct tpa6130a2_data *data;
BUG_ON(tpa6130a2_client == NULL);
if (tpa6130a2_client == NULL)
return -ENODEV;
data = i2c_get_clientdata(tpa6130a2_client);
snd_soc_dapm_new_controls(codec, tpa6130a2_dapm_widgets,