示例#1
0
文件: tas5086.c 项目: 19Dan01/linux
static int tas5086_probe(struct snd_soc_codec *codec)
{
	struct tas5086_private *priv = snd_soc_codec_get_drvdata(codec);
	int i, ret;

	ret = regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
	if (ret < 0) {
		dev_err(codec->dev, "Failed to enable regulators: %d\n", ret);
		return ret;
	}

	priv->pwm_start_mid_z = 0;
	priv->charge_period = 1300000; /* hardware default is 1300 ms */

	if (of_match_device(of_match_ptr(tas5086_dt_ids), codec->dev)) {
		struct device_node *of_node = codec->dev->of_node;

		of_property_read_u32(of_node, "ti,charge-period",
				     &priv->charge_period);

		for (i = 0; i < 6; i++) {
			char name[25];

			snprintf(name, sizeof(name),
				 "ti,mid-z-channel-%d", i + 1);

			if (of_get_property(of_node, name, NULL) != NULL)
				priv->pwm_start_mid_z |= 1 << i;
		}
	}

	tas5086_reset(priv);
	ret = tas5086_init(codec->dev, priv);
	if (ret < 0)
		goto exit_disable_regulators;

	/* set master volume to 0 dB */
	ret = regmap_write(priv->regmap, TAS5086_MASTER_VOL, 0x30);
	if (ret < 0)
		goto exit_disable_regulators;

	return 0;

exit_disable_regulators:
	regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies);

	return ret;
}
示例#2
0
文件: tas5086.c 项目: 908626950/linux
static int tas5086_i2c_probe(struct i2c_client *i2c,
			     const struct i2c_device_id *id)
{
	struct tas5086_private *priv;
	struct device *dev = &i2c->dev;
	int gpio_nreset = -EINVAL;
	int i, ret;

	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	priv->regmap = devm_regmap_init(dev, NULL, i2c, &tas5086_regmap);
	if (IS_ERR(priv->regmap)) {
		ret = PTR_ERR(priv->regmap);
		dev_err(&i2c->dev, "Failed to create regmap: %d\n", ret);
		return ret;
	}

	i2c_set_clientdata(i2c, priv);

	if (of_match_device(of_match_ptr(tas5086_dt_ids), dev)) {
		struct device_node *of_node = dev->of_node;
		gpio_nreset = of_get_named_gpio(of_node, "reset-gpio", 0);
	}

	if (gpio_is_valid(gpio_nreset))
		if (devm_gpio_request(dev, gpio_nreset, "TAS5086 Reset"))
			gpio_nreset = -EINVAL;

	priv->gpio_nreset = gpio_nreset;
	tas5086_reset(priv);

	/* The TAS5086 always returns 0x03 in its TAS5086_DEV_ID register */
	ret = regmap_read(priv->regmap, TAS5086_DEV_ID, &i);
	if (ret < 0)
		return ret;

	if (i != 0x3) {
		dev_err(dev,
			"Failed to identify TAS5086 codec (got %02x)\n", i);
		return -ENODEV;
	}

	return snd_soc_register_codec(&i2c->dev, &soc_codec_dev_tas5086,
		&tas5086_dai, 1);
}
示例#3
0
文件: tas5086.c 项目: 908626950/linux
static int tas5086_soc_resume(struct snd_soc_codec *codec)
{
	struct tas5086_private *priv = snd_soc_codec_get_drvdata(codec);
	int ret;

	tas5086_reset(priv);
	regcache_mark_dirty(priv->regmap);

	ret = tas5086_init(codec->dev, priv);
	if (ret < 0)
		return ret;

	ret = regcache_sync(priv->regmap);
	if (ret < 0)
		return ret;

	return 0;
}
示例#4
0
文件: tas5086.c 项目: 19Dan01/linux
static int tas5086_soc_resume(struct snd_soc_codec *codec)
{
	struct tas5086_private *priv = snd_soc_codec_get_drvdata(codec);
	int ret;

	ret = regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
	if (ret < 0)
		return ret;

	tas5086_reset(priv);
	regcache_mark_dirty(priv->regmap);

	ret = tas5086_init(codec->dev, priv);
	if (ret < 0)
		return ret;

	ret = regcache_sync(priv->regmap);
	if (ret < 0)
		return ret;

	return 0;
}
示例#5
0
文件: tas5086.c 项目: 19Dan01/linux
static int tas5086_i2c_probe(struct i2c_client *i2c,
			     const struct i2c_device_id *id)
{
	struct tas5086_private *priv;
	struct device *dev = &i2c->dev;
	int gpio_nreset = -EINVAL;
	int i, ret;

	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	for (i = 0; i < ARRAY_SIZE(supply_names); i++)
		priv->supplies[i].supply = supply_names[i];

	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(priv->supplies),
				      priv->supplies);
	if (ret < 0) {
		dev_err(dev, "Failed to get regulators: %d\n", ret);
		return ret;
	}

	priv->regmap = devm_regmap_init(dev, NULL, i2c, &tas5086_regmap);
	if (IS_ERR(priv->regmap)) {
		ret = PTR_ERR(priv->regmap);
		dev_err(&i2c->dev, "Failed to create regmap: %d\n", ret);
		return ret;
	}

	i2c_set_clientdata(i2c, priv);

	if (of_match_device(of_match_ptr(tas5086_dt_ids), dev)) {
		struct device_node *of_node = dev->of_node;
		gpio_nreset = of_get_named_gpio(of_node, "reset-gpio", 0);
	}

	if (gpio_is_valid(gpio_nreset))
		if (devm_gpio_request(dev, gpio_nreset, "TAS5086 Reset"))
			gpio_nreset = -EINVAL;

	priv->gpio_nreset = gpio_nreset;

	ret = regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
	if (ret < 0) {
		dev_err(dev, "Failed to enable regulators: %d\n", ret);
		return ret;
	}

	tas5086_reset(priv);

	/* The TAS5086 always returns 0x03 in its TAS5086_DEV_ID register */
	ret = regmap_read(priv->regmap, TAS5086_DEV_ID, &i);
	if (ret == 0 && i != 0x3) {
		dev_err(dev,
			"Failed to identify TAS5086 codec (got %02x)\n", i);
		ret = -ENODEV;
	}

	/*
	 * The chip has been identified, so we can turn off the power
	 * again until the dai link is set up.
	 */
	regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies);

	if (ret == 0)
		ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_tas5086,
					     &tas5086_dai, 1);

	return ret;
}