Optimize the way how tlv320dac33 is powered uppon module and soc initialization. Also read the DAC33 ID registers, and update the reg_cache to reflect it.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@nokia.com --- sound/soc/codecs/tlv320dac33.c | 37 ++++++++++++++++++------------------- 1 files changed, 18 insertions(+), 19 deletions(-)
diff --git a/sound/soc/codecs/tlv320dac33.c b/sound/soc/codecs/tlv320dac33.c index 329a97f..9944721 100644 --- a/sound/soc/codecs/tlv320dac33.c +++ b/sound/soc/codecs/tlv320dac33.c @@ -329,6 +329,15 @@ static void dac33_init_chip(struct snd_soc_codec *codec) dac33_read_reg_cache(codec, DAC33_LINER_TO_RLO_VOL)); }
+static inline void dac33_read_id(struct snd_soc_codec *codec) +{ + u8 reg; + + dac33_read(codec, DAC33_DEVICE_ID_MSB, ®); + dac33_read(codec, DAC33_DEVICE_ID_LSB, ®); + dac33_read(codec, DAC33_DEVICE_REV_ID, ®); +} + static inline void dac33_soft_power(struct snd_soc_codec *codec, int power) { u8 reg; @@ -1285,9 +1294,6 @@ static int dac33_soc_probe(struct platform_device *pdev) socdev->card->codec = codec; dac33 = snd_soc_codec_get_drvdata(codec);
- /* Power up the codec */ - dac33_hard_power(codec, 1); - /* register pcms */ ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); if (ret < 0) { @@ -1307,9 +1313,6 @@ static int dac33_soc_probe(struct platform_device *pdev) /* power on device */ dac33_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
- /* Bias level configuration has enabled regulator an extra time */ - regulator_bulk_disable(ARRAY_SIZE(dac33->supplies), dac33->supplies); - return 0;
pcm_err: @@ -1459,8 +1462,6 @@ static int __devinit dac33_i2c_probe(struct i2c_client *client, goto error_gpio; } gpio_direction_output(dac33->power_gpio, 0); - } else { - dac33->chip_power = 1; }
/* Check if the IRQ number is valid and request it */ @@ -1498,12 +1499,14 @@ static int __devinit dac33_i2c_probe(struct i2c_client *client, goto err_get; }
- ret = regulator_bulk_enable(ARRAY_SIZE(dac33->supplies), - dac33->supplies); + /* Read the tlv320dac33 ID registers */ + ret = dac33_hard_power(codec, 1); if (ret != 0) { - dev_err(codec->dev, "Failed to enable supplies: %d\n", ret); - goto err_enable; + dev_err(codec->dev, "Failed to power up codec: %d\n", ret); + goto error_codec; } + dac33_read_id(codec); + dac33_hard_power(codec, 0);
ret = snd_soc_register_codec(codec); if (ret != 0) { @@ -1518,14 +1521,9 @@ static int __devinit dac33_i2c_probe(struct i2c_client *client, goto error_codec; }
- /* Shut down the codec for now */ - dac33_hard_power(codec, 0); - return ret;
error_codec: - regulator_bulk_disable(ARRAY_SIZE(dac33->supplies), dac33->supplies); -err_enable: regulator_bulk_free(ARRAY_SIZE(dac33->supplies), dac33->supplies); err_get: if (dac33->irq >= 0) { @@ -1549,14 +1547,15 @@ static int __devexit dac33_i2c_remove(struct i2c_client *client) struct tlv320dac33_priv *dac33;
dac33 = i2c_get_clientdata(client); - dac33_hard_power(&dac33->codec, 0); + + if (unlikely(dac33->chip_power)) + dac33_hard_power(&dac33->codec, 0);
if (dac33->power_gpio >= 0) gpio_free(dac33->power_gpio); if (dac33->irq >= 0) free_irq(dac33->irq, &dac33->codec);
- regulator_bulk_disable(ARRAY_SIZE(dac33->supplies), dac33->supplies); regulator_bulk_free(ARRAY_SIZE(dac33->supplies), dac33->supplies);
destroy_workqueue(dac33->dac33_wq);