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Commit d5fd3ccc authored by Daniel Mack's avatar Daniel Mack Committed by Mark Brown
Browse files

ASoC: tas5086: move initialization code to own functions 



We'll need to call code to initialize and reset the codec again at
resume time, so factor it out first.

Signed-off-by: default avatarDaniel Mack <zonque@gmail.com>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent 648c5382

sound/soc/codecs/tas5086.c

+72 −56
Original line number Diff line number Diff line
@@ -458,6 +458,75 @@ static int tas5086_mute_stream(struct snd_soc_dai *dai, int mute, int stream) 
	return regmap_write(priv->regmap, TAS5086_SOFT_MUTE, val);

}



static void tas5086_reset(struct tas5086_private *priv)

{

	if (gpio_is_valid(priv->gpio_nreset)) {

		/* Reset codec - minimum assertion time is 400ns */

		gpio_direction_output(priv->gpio_nreset, 0);

		udelay(1);

		gpio_set_value(priv->gpio_nreset, 1);



		/* Codec needs ~15ms to wake up */

		msleep(15);

	}

}



/* charge period values in microseconds */

static const int tas5086_charge_period[] = {

	  13000,  16900,   23400,   31200,   41600,   54600,   72800,   96200,

	 130000, 156000,  234000,  312000,  416000,  546000,  728000,  962000,

	1300000, 169000, 2340000, 3120000, 4160000, 5460000, 7280000, 9620000,

};



static int tas5086_init(struct device *dev, struct tas5086_private *priv)

{

	int ret, i;



	/*

	 * If any of the channels is configured to start in Mid-Z mode,

	 * configure 'part 1' of the PWM starts to use Mid-Z, and tell

	 * all configured mid-z channels to start start under 'part 1'.

	 */

	if (priv->pwm_start_mid_z)

		regmap_write(priv->regmap, TAS5086_PWM_START,

			     TAS5086_PWM_START_MIDZ_FOR_START_1 |

				priv->pwm_start_mid_z);



	/* lookup and set split-capacitor charge period */

	if (priv->charge_period == 0) {

		regmap_write(priv->regmap, TAS5086_SPLIT_CAP_CHARGE, 0);

	} else {

		i = index_in_array(tas5086_charge_period,

				   ARRAY_SIZE(tas5086_charge_period),

				   priv->charge_period);

		if (i >= 0)

			regmap_write(priv->regmap, TAS5086_SPLIT_CAP_CHARGE,

				     i + 0x08);

		else

			dev_warn(dev,

				 "Invalid split-cap charge period of %d ns.\n",

				 priv->charge_period);

	}



	/* enable factory trim */

	ret = regmap_write(priv->regmap, TAS5086_OSC_TRIM, 0x00);

	if (ret < 0)

		return ret;



	/* start all channels */

	ret = regmap_write(priv->regmap, TAS5086_SYS_CONTROL_2, 0x20);

	if (ret < 0)

		return ret;



	/* mute all channels for now */

	ret = regmap_write(priv->regmap, TAS5086_SOFT_MUTE,

			   TAS5086_SOFT_MUTE_ALL);

	if (ret < 0)

		return ret;



	return 0;

}



/* TAS5086 controls */

static const DECLARE_TLV_DB_SCALE(tas5086_dac_tlv, -10350, 50, 1);
@@ -712,13 +781,6 @@ static const struct of_device_id tas5086_dt_ids[] = { 
MODULE_DEVICE_TABLE(of, tas5086_dt_ids);

#endif



/* charge period values in microseconds */

static const int tas5086_charge_period[] = {

	  13000,  16900,   23400,   31200,   41600,   54600,   72800,   96200,

	 130000, 156000,  234000,  312000,  416000,  546000,  728000,  962000,

	1300000, 169000, 2340000, 3120000, 4160000, 5460000, 7280000, 9620000,

};



static int tas5086_probe(struct snd_soc_codec *codec)

{

	struct tas5086_private *priv = snd_soc_codec_get_drvdata(codec);
@@ -729,6 +791,7 @@ static int tas5086_probe(struct snd_soc_codec *codec) 


	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);
@@ -743,39 +806,7 @@ static int tas5086_probe(struct snd_soc_codec *codec) 
		}

	}



	/*

	 * If any of the channels is configured to start in Mid-Z mode,

	 * configure 'part 1' of the PWM starts to use Mid-Z, and tell

	 * all configured mid-z channels to start start under 'part 1'.

	 */

	if (priv->pwm_start_mid_z)

		regmap_write(priv->regmap, TAS5086_PWM_START,

			     TAS5086_PWM_START_MIDZ_FOR_START_1 |

				priv->pwm_start_mid_z);



	/* lookup and set split-capacitor charge period */

	if (priv->charge_period == 0) {

		regmap_write(priv->regmap, TAS5086_SPLIT_CAP_CHARGE, 0);

	} else {

		i = index_in_array(tas5086_charge_period,

				   ARRAY_SIZE(tas5086_charge_period),

				   priv->charge_period);

		if (i >= 0)

			regmap_write(priv->regmap, TAS5086_SPLIT_CAP_CHARGE,

				     i + 0x08);

		else

			dev_warn(codec->dev,

				 "Invalid split-cap charge period of %d ns.\n",

				 priv->charge_period);

	}



	/* enable factory trim */

	ret = regmap_write(priv->regmap, TAS5086_OSC_TRIM, 0x00);

	if (ret < 0)

		return ret;



	/* start all channels */

	ret = regmap_write(priv->regmap, TAS5086_SYS_CONTROL_2, 0x20);

	ret = tas5086_init(codec->dev, priv);

	if (ret < 0)

		return ret;
@@ -784,12 +815,6 @@ static int tas5086_probe(struct snd_soc_codec *codec) 
	if (ret < 0)

		return ret;



	/* mute all channels for now */

	ret = regmap_write(priv->regmap, TAS5086_SOFT_MUTE,

			   TAS5086_SOFT_MUTE_ALL);

	if (ret < 0)

		return ret;



	return 0;

}
@@ -866,17 +891,8 @@ static int tas5086_i2c_probe(struct i2c_client *i2c, 
		if (devm_gpio_request(dev, gpio_nreset, "TAS5086 Reset"))

			gpio_nreset = -EINVAL;



	if (gpio_is_valid(gpio_nreset)) {

		/* Reset codec - minimum assertion time is 400ns */

		gpio_direction_output(gpio_nreset, 0);

		udelay(1);

		gpio_set_value(gpio_nreset, 1);



		/* Codec needs ~15ms to wake up */

		msleep(15);

	}



	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);