Unverified Commit a1aee7f7 authored by Shuming Fan's avatar Shuming Fan Committed by Mark Brown
Browse files

ASoC: rt711-sdca: add the notification when volume changed 



This patch adds the return value when the volume settings were changed.
The userspace application might monitor the kcontrols to check which control changed.

Signed-off-by: default avatarShuming Fan <shumingf@realtek.com>
Link: https://lore.kernel.org/r/20210422103235.22048-1-shumingf@realtek.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent ca5118c0

sound/soc/codecs/rt711-sdca.c

+11 −2
Original line number Diff line number Diff line
@@ -509,12 +509,16 @@ static int rt711_sdca_set_gain_put(struct snd_kcontrol *kcontrol, 
		(struct soc_mixer_control *)kcontrol->private_value;

	struct rt711_sdca_priv *rt711 = snd_soc_component_get_drvdata(component);

	unsigned int read_l, read_r, gain_l_val, gain_r_val;

	unsigned int i, adc_vol_flag = 0;

	unsigned int i, adc_vol_flag = 0, changed = 0;

	unsigned int lvalue, rvalue;



	if (strstr(ucontrol->id.name, "FU1E Capture Volume") ||

		strstr(ucontrol->id.name, "FU0F Capture Volume"))

		adc_vol_flag = 1;



	regmap_read(rt711->mbq_regmap, mc->reg, &lvalue);

	regmap_read(rt711->mbq_regmap, mc->rreg, &rvalue);



	/* control value to 2's complement value */

	/* L Channel */

	gain_l_val = ucontrol->value.integer.value[0];
@@ -560,6 +564,11 @@ static int rt711_sdca_set_gain_put(struct snd_kcontrol *kcontrol, 
		gain_r_val &= 0xffff;

	}



	if (lvalue != gain_l_val || rvalue != gain_r_val)

		changed = 1;

	else

		return 0;



	for (i = 0; i < 3; i++) { /* retry 3 times at most */

		/* Lch*/

		regmap_write(rt711->mbq_regmap, mc->reg, gain_l_val);
@@ -573,7 +582,7 @@ static int rt711_sdca_set_gain_put(struct snd_kcontrol *kcontrol, 
			break;

	}



	return i == 3 ? -EIO : 0;

	return i == 3 ? -EIO : changed;

}



static int rt711_sdca_set_gain_get(struct snd_kcontrol *kcontrol,