Commit 3d632cc8 authored by Eric Nelson's avatar Eric Nelson Committed by Mark Brown
Browse files

ASoC: sgtl5000: Initialize CHIP_ANA_POWER to power-on defaults 



Initialize CHIP_ANA_POWER to match power on defaults, which disables
ADC, DAC, and charge pumps.

In the process, remove references to the following register/bitfields
from the sgtl5000_set_power_regs routine:
	CHIP_ANA_POWER/LINREG_SIMPLE_POWERUP and
	CHIP_LINREG_CTRL/LINREG_VDD_MASK

And remove CHIP_ANA_POWER and CHIP_LINREG_CTRL from the set of default
registers so they don't get clobbered by sgtl5000_fill_defaults().

Signed-off-by: default avatarEric Nelson <eric@nelint.com>
Signed-off-by: default avatarClemens Gruber <clemens.gruber@pqgruber.com>
Tested-by: default avatarFabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent f219b169

sound/soc/codecs/sgtl5000.c

+21 −35
Original line number Diff line number Diff line
@@ -47,12 +47,10 @@ static const struct reg_default sgtl5000_reg_defaults[] = { 
	{ SGTL5000_CHIP_ANA_ADC_CTRL,		0x0000 },

	{ SGTL5000_CHIP_ANA_HP_CTRL,		0x1818 },

	{ SGTL5000_CHIP_ANA_CTRL,		0x0111 },

	{ SGTL5000_CHIP_LINREG_CTRL,		0x0000 },

	{ SGTL5000_CHIP_REF_CTRL,		0x0000 },

	{ SGTL5000_CHIP_MIC_CTRL,		0x0000 },

	{ SGTL5000_CHIP_LINE_OUT_CTRL,		0x0000 },

	{ SGTL5000_CHIP_LINE_OUT_VOL,		0x0404 },

	{ SGTL5000_CHIP_ANA_POWER,		0x7060 },

	{ SGTL5000_CHIP_PLL_CTRL,		0x5000 },

	{ SGTL5000_CHIP_CLK_TOP_CTRL,		0x0000 },

	{ SGTL5000_CHIP_ANA_STATUS,		0x0000 },
@@ -93,6 +91,7 @@ static const char *supply_names[SGTL5000_SUPPLY_NUM] = { 
};



#define LDO_VOLTAGE		1200000

#define LINREG_VDDD	((1600 - LDO_VOLTAGE / 1000) / 50)



enum sgtl5000_micbias_resistor {

	SGTL5000_MICBIAS_OFF = 0,
@@ -1002,25 +1001,6 @@ static int sgtl5000_set_power_regs(struct snd_soc_codec *codec) 


	snd_soc_write(codec, SGTL5000_CHIP_ANA_POWER, ana_pwr);



	/* set voltage to register */

	snd_soc_update_bits(codec, SGTL5000_CHIP_LINREG_CTRL,

				SGTL5000_LINREG_VDDD_MASK, 0x8);



	/*

	 * if vddd linear reg has been enabled,

	 * simple digital supply should be clear to get

	 * proper VDDD voltage.

	 */

	if (ana_pwr & SGTL5000_LINEREG_D_POWERUP)

		snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,

				SGTL5000_LINREG_SIMPLE_POWERUP,

				0);

	else

		snd_soc_update_bits(codec, SGTL5000_CHIP_ANA_POWER,

				SGTL5000_LINREG_SIMPLE_POWERUP |

				SGTL5000_STARTUP_POWERUP,

				0);



	/*

	 * set ADC/DAC VAG to vdda / 2,

	 * should stay in range (0.8v, 1.575v)
@@ -1242,6 +1222,7 @@ static int sgtl5000_i2c_probe(struct i2c_client *client, 
	int ret, reg, rev;

	struct device_node *np = client->dev.of_node;

	u32 value;

	u16 ana_pwr;



	sgtl5000 = devm_kzalloc(&client->dev, sizeof(*sgtl5000), GFP_KERNEL);

	if (!sgtl5000)
@@ -1299,29 +1280,34 @@ static int sgtl5000_i2c_probe(struct i2c_client *client, 
	sgtl5000->revision = rev;



	/* Follow section 2.2.1.1 of AN3663 */

	ana_pwr = SGTL5000_ANA_POWER_DEFAULT;

	if (sgtl5000->num_supplies <= VDDD) {

		/* internal VDDD at 1.2V */

		regmap_update_bits(sgtl5000->regmap,

		ret = regmap_update_bits(sgtl5000->regmap,

					 SGTL5000_CHIP_LINREG_CTRL,

				   SGTL5000_LINREG_VDDD_MASK, 8);

		regmap_update_bits(sgtl5000->regmap,

				   SGTL5000_CHIP_ANA_POWER,

				   SGTL5000_LINEREG_D_POWERUP

				   | SGTL5000_LINREG_SIMPLE_POWERUP,

				   SGTL5000_LINEREG_D_POWERUP);

		dev_info(&client->dev, "Using internal LDO instead of VDDD: check ER1\n");

					 SGTL5000_LINREG_VDDD_MASK,

					 LINREG_VDDD);

		if (ret)

			dev_err(&client->dev,

				"Error %d setting LINREG_VDDD\n", ret);



		ana_pwr |= SGTL5000_LINEREG_D_POWERUP;

		dev_info(&client->dev,

			 "Using internal LDO instead of VDDD: check ER1\n");

	} else {

		/* using external LDO for VDDD

		 * Clear startup powerup and simple powerup

		 * bits to save power

		 */

		regmap_update_bits(sgtl5000->regmap,

				   SGTL5000_CHIP_ANA_POWER,

				   SGTL5000_STARTUP_POWERUP

				   | SGTL5000_LINREG_SIMPLE_POWERUP,

				   0);

		ana_pwr &= ~(SGTL5000_STARTUP_POWERUP

			     | SGTL5000_LINREG_SIMPLE_POWERUP);

		dev_dbg(&client->dev, "Using external VDDD\n");

	}

	ret = regmap_write(sgtl5000->regmap, SGTL5000_CHIP_ANA_POWER, ana_pwr);

	if (ret)

		dev_err(&client->dev,

			"Error %d setting CHIP_ANA_POWER to %04x\n",

			ret, ana_pwr);



	if (np) {

		if (!of_property_read_u32(np,

sound/soc/codecs/sgtl5000.h

+1 −0
Original line number Diff line number Diff line
@@ -325,6 +325,7 @@ 
/*

 * SGTL5000_CHIP_ANA_POWER

 */

#define SGTL5000_ANA_POWER_DEFAULT		0x7060

#define SGTL5000_DAC_STEREO			0x4000

#define SGTL5000_LINREG_SIMPLE_POWERUP		0x2000

#define SGTL5000_STARTUP_POWERUP		0x1000

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