Commit 6879db76 authored by Bard Liao's avatar Bard Liao Committed by Mark Brown
Browse files

ASoC: rt286: reduce power consumption 



This patch will optimize the power consumption of rt286.

Signed-off-by: default avatarBard Liao <bardliao@realtek.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent f114040e

sound/soc/codecs/rt286.c

+155 −56
Original line number Diff line number Diff line
@@ -36,11 +36,13 @@ 


struct rt286_priv {

	struct regmap *regmap;

	struct snd_soc_codec *codec;

	struct rt286_platform_data pdata;

	struct i2c_client *i2c;

	struct snd_soc_jack *jack;

	struct delayed_work jack_detect_work;

	int sys_clk;

	int clk_id;

	struct reg_default *index_cache;

};
@@ -298,7 +300,6 @@ static int rt286_support_power_controls[] = { 
static int rt286_jack_detect(struct rt286_priv *rt286, bool *hp, bool *mic)

{

	unsigned int val, buf;

	int i;



	*hp = false;

	*mic = false;
@@ -309,67 +310,44 @@ static int rt286_jack_detect(struct rt286_priv *rt286, bool *hp, bool *mic) 
		if (*hp) {

			/* power on HV,VERF */

			regmap_update_bits(rt286->regmap,

				RT286_POWER_CTRL1, 0x1001, 0x0);

				RT286_DC_GAIN, 0x200, 0x200);



			snd_soc_dapm_force_enable_pin(&rt286->codec->dapm,

							"HV");

			snd_soc_dapm_force_enable_pin(&rt286->codec->dapm,

							"VREF");

			/* power LDO1 */

			regmap_update_bits(rt286->regmap,

				RT286_POWER_CTRL2, 0x4, 0x4);

			snd_soc_dapm_force_enable_pin(&rt286->codec->dapm,

							"LDO1");

			snd_soc_dapm_sync(&rt286->codec->dapm);



			regmap_write(rt286->regmap, RT286_SET_MIC1, 0x24);

			msleep(50);



			regmap_update_bits(rt286->regmap,

				RT286_CBJ_CTRL1, 0xfcc0, 0xd400);

			msleep(300);

			regmap_read(rt286->regmap, RT286_CBJ_CTRL2, &val);



			msleep(200);

			i = 40;

			while (((val & 0x0800) == 0) && (i > 0)) {

			if (0x0070 == (val & 0x0070)) {

				*mic = true;

			} else {

				regmap_update_bits(rt286->regmap,

					RT286_CBJ_CTRL1, 0xfcc0, 0xe400);

				msleep(300);

				regmap_read(rt286->regmap,

					RT286_CBJ_CTRL2, &val);

				i--;

				msleep(20);

			}



			if (0x0400 == (val & 0x0700)) {

				*mic = false;



				regmap_write(rt286->regmap,

					RT286_SET_MIC1, 0x20);

				/* power off HV,VERF */

				regmap_update_bits(rt286->regmap,

					RT286_POWER_CTRL1, 0x1001, 0x1001);

				regmap_update_bits(rt286->regmap,

					RT286_A_BIAS_CTRL3, 0xc000, 0x0000);

				regmap_update_bits(rt286->regmap,

					RT286_CBJ_CTRL1, 0x0030, 0x0000);

				regmap_update_bits(rt286->regmap,

					RT286_A_BIAS_CTRL2, 0xc000, 0x0000);

			} else if ((0x0200 == (val & 0x0700)) ||

				(0x0100 == (val & 0x0700))) {

				if (0x0070 == (val & 0x0070))

					*mic = true;

				regmap_update_bits(rt286->regmap,

					RT286_A_BIAS_CTRL3, 0xc000, 0x8000);

				regmap_update_bits(rt286->regmap,

					RT286_CBJ_CTRL1, 0x0030, 0x0020);

				regmap_update_bits(rt286->regmap,

					RT286_A_BIAS_CTRL2, 0xc000, 0x8000);

			} else {

				else

					*mic = false;

			}



			regmap_update_bits(rt286->regmap,

						RT286_MISC_CTRL1,

						0x0060, 0x0000);

		} else {

			regmap_update_bits(rt286->regmap,

						RT286_MISC_CTRL1,

						0x0060, 0x0020);

			regmap_update_bits(rt286->regmap,

						RT286_A_BIAS_CTRL3,

						0xc000, 0x8000);

			regmap_update_bits(rt286->regmap,

						RT286_CBJ_CTRL1,

						0x0030, 0x0020);

			regmap_update_bits(rt286->regmap,

						RT286_A_BIAS_CTRL2,

						0xc000, 0x8000);

				RT286_DC_GAIN, 0x200, 0x0);



		} else {

			*mic = false;

			regmap_write(rt286->regmap, RT286_SET_MIC1, 0x20);

		}

	} else {

		regmap_read(rt286->regmap, RT286_GET_HP_SENSE, &buf);
@@ -378,6 +356,12 @@ static int rt286_jack_detect(struct rt286_priv *rt286, bool *hp, bool *mic) 
		*mic = buf & 0x80000000;

	}



	snd_soc_dapm_disable_pin(&rt286->codec->dapm, "HV");

	snd_soc_dapm_disable_pin(&rt286->codec->dapm, "VREF");

	if (!*hp)

		snd_soc_dapm_disable_pin(&rt286->codec->dapm, "LDO1");

	snd_soc_dapm_sync(&rt286->codec->dapm);



	return 0;

}
@@ -415,6 +399,17 @@ int rt286_mic_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack) 
}

EXPORT_SYMBOL_GPL(rt286_mic_detect);



static int is_mclk_mode(struct snd_soc_dapm_widget *source,

			 struct snd_soc_dapm_widget *sink)

{

	struct rt286_priv *rt286 = snd_soc_codec_get_drvdata(source->codec);



	if (rt286->clk_id == RT286_SCLK_S_MCLK)

		return 1;

	else

		return 0;

}



static const DECLARE_TLV_DB_SCALE(out_vol_tlv, -6350, 50, 0);

static const DECLARE_TLV_DB_SCALE(mic_vol_tlv, 0, 1000, 0);
@@ -568,7 +563,84 @@ static int rt286_adc_event(struct snd_soc_dapm_widget *w, 
	return 0;

}



static int rt286_vref_event(struct snd_soc_dapm_widget *w,

			     struct snd_kcontrol *kcontrol, int event)

{

	struct snd_soc_codec *codec = w->codec;



	switch (event) {

	case SND_SOC_DAPM_PRE_PMU:

		snd_soc_update_bits(codec,

			RT286_CBJ_CTRL1, 0x0400, 0x0000);

		mdelay(50);

		break;

	default:

		return 0;

	}



	return 0;

}



static int rt286_ldo2_event(struct snd_soc_dapm_widget *w,

			     struct snd_kcontrol *kcontrol, int event)

{

	struct snd_soc_codec *codec = w->codec;



	switch (event) {

	case SND_SOC_DAPM_POST_PMU:

		snd_soc_update_bits(codec, RT286_POWER_CTRL2, 0x38, 0x08);

		break;

	case SND_SOC_DAPM_PRE_PMD:

		snd_soc_update_bits(codec, RT286_POWER_CTRL2, 0x38, 0x30);

		break;

	default:

		return 0;

	}



	return 0;

}



static int rt286_mic1_event(struct snd_soc_dapm_widget *w,

			     struct snd_kcontrol *kcontrol, int event)

{

	struct snd_soc_codec *codec = w->codec;



	switch (event) {

	case SND_SOC_DAPM_PRE_PMU:

		snd_soc_update_bits(codec,

			RT286_A_BIAS_CTRL3, 0xc000, 0x8000);

		snd_soc_update_bits(codec,

			RT286_A_BIAS_CTRL2, 0xc000, 0x8000);

		break;

	case SND_SOC_DAPM_POST_PMD:

		snd_soc_update_bits(codec,

			RT286_A_BIAS_CTRL3, 0xc000, 0x0000);

		snd_soc_update_bits(codec,

			RT286_A_BIAS_CTRL2, 0xc000, 0x0000);

		break;

	default:

		return 0;

	}



	return 0;

}



static const struct snd_soc_dapm_widget rt286_dapm_widgets[] = {

	SND_SOC_DAPM_SUPPLY_S("HV", 1, RT286_POWER_CTRL1,

		12, 1, NULL, 0),

	SND_SOC_DAPM_SUPPLY("VREF", RT286_POWER_CTRL1,

		0, 1, rt286_vref_event, SND_SOC_DAPM_PRE_PMU),

	SND_SOC_DAPM_SUPPLY_S("LDO1", 1, RT286_POWER_CTRL2,

		2, 0, NULL, 0),

	SND_SOC_DAPM_SUPPLY_S("LDO2", 2, RT286_POWER_CTRL1,

		13, 1, rt286_ldo2_event, SND_SOC_DAPM_PRE_PMD |

		SND_SOC_DAPM_POST_PMU),

	SND_SOC_DAPM_SUPPLY("MCLK MODE", RT286_PLL_CTRL1,

		5, 0, NULL, 0),

	SND_SOC_DAPM_SUPPLY("MIC1 Input Buffer", SND_SOC_NOPM,

		0, 0, rt286_mic1_event, SND_SOC_DAPM_PRE_PMU |

		SND_SOC_DAPM_POST_PMD),



	/* Input Lines */

	SND_SOC_DAPM_INPUT("DMIC1 Pin"),

	SND_SOC_DAPM_INPUT("DMIC2 Pin"),
@@ -642,6 +714,25 @@ static const struct snd_soc_dapm_widget rt286_dapm_widgets[] = { 
};



static const struct snd_soc_dapm_route rt286_dapm_routes[] = {

	{"ADC 0", NULL, "MCLK MODE", is_mclk_mode},

	{"ADC 1", NULL, "MCLK MODE", is_mclk_mode},

	{"Front", NULL, "MCLK MODE", is_mclk_mode},

	{"Surround", NULL, "MCLK MODE", is_mclk_mode},



	{"HP Power", NULL, "LDO1"},

	{"HP Power", NULL, "LDO2"},



	{"MIC1", NULL, "LDO1"},

	{"MIC1", NULL, "LDO2"},

	{"MIC1", NULL, "HV"},

	{"MIC1", NULL, "VREF"},

	{"MIC1", NULL, "MIC1 Input Buffer"},



	{"SPO", NULL, "LDO1"},

	{"SPO", NULL, "LDO2"},

	{"SPO", NULL, "HV"},

	{"SPO", NULL, "VREF"},



	{"DMIC1", NULL, "DMIC1 Pin"},

	{"DMIC2", NULL, "DMIC2 Pin"},

	{"DMIC1", NULL, "DMIC Receiver"},
@@ -880,6 +971,7 @@ static int rt286_set_dai_sysclk(struct snd_soc_dai *dai, 
	}



	rt286->sys_clk = freq;

	rt286->clk_id = clk_id;



	return 0;

}
@@ -915,13 +1007,18 @@ static int rt286_set_bias_level(struct snd_soc_codec *codec, 


	case SND_SOC_BIAS_ON:

		mdelay(10);

		snd_soc_update_bits(codec,

			RT286_CBJ_CTRL1, 0x0400, 0x0400);

		snd_soc_update_bits(codec,

			RT286_DC_GAIN, 0x200, 0x0);



		break;



	case SND_SOC_BIAS_STANDBY:

		snd_soc_write(codec,

			RT286_SET_AUDIO_POWER, AC_PWRST_D3);

		snd_soc_update_bits(codec,

			RT286_DC_GAIN, 0x200, 0x0);

			RT286_CBJ_CTRL1, 0x0400, 0x0000);

		break;



	default:
@@ -962,6 +1059,7 @@ static int rt286_probe(struct snd_soc_codec *codec) 
{

	struct rt286_priv *rt286 = snd_soc_codec_get_drvdata(codec);



	rt286->codec = codec;

	codec->dapm.bias_level = SND_SOC_BIAS_OFF;



	if (rt286->i2c->irq) {
@@ -1152,7 +1250,6 @@ static int rt286_i2c_probe(struct i2c_client *i2c, 
	if (!rt286->pdata.cbj_en) {

		regmap_write(rt286->regmap, RT286_CBJ_CTRL2, 0x0000);

		regmap_write(rt286->regmap, RT286_MIC1_DET_CTRL, 0x0816);

		regmap_write(rt286->regmap, RT286_MISC_CTRL1, 0x0000);

		regmap_update_bits(rt286->regmap,

					RT286_CBJ_CTRL1, 0xf000, 0xb000);

	} else {
@@ -1169,8 +1266,10 @@ static int rt286_i2c_probe(struct i2c_client *i2c, 


	mdelay(10);



	/*Power down LDO2*/

	regmap_update_bits(rt286->regmap, RT286_POWER_CTRL2, 0x8, 0x0);

	regmap_write(rt286->regmap, RT286_MISC_CTRL1, 0x0000);

	/*Power down LDO, VREF*/

	regmap_update_bits(rt286->regmap, RT286_POWER_CTRL2, 0xc, 0x0);

	regmap_update_bits(rt286->regmap, RT286_POWER_CTRL1, 0x1001, 0x1001);



	/*Set depop parameter*/

	regmap_update_bits(rt286->regmap, RT286_DEPOP_CTRL2, 0x403a, 0x401a);