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Commit 121df681 authored by Charles Keepax's avatar Charles Keepax Committed by Mark Brown
Browse files

ASoC: mfld_machine: Update locking around use of DAPM pin API 



The pin updates in this driver look like they are intended to be done
atomically, update to do so.

Signed-off-by: default avatarCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent 02afc6a2

sound/soc/intel/mfld_machine.c

+41 −24
Original line number Diff line number Diff line
@@ -101,20 +101,27 @@ static int headset_set_switch(struct snd_kcontrol *kcontrol, 
	struct snd_ctl_elem_value *ucontrol)

{

	struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);

	struct snd_soc_dapm_context *dapm = &codec->dapm;



	if (ucontrol->value.integer.value[0] == hs_switch)

		return 0;



	snd_soc_dapm_mutex_lock(dapm);



	if (ucontrol->value.integer.value[0]) {

		pr_debug("hs_set HS path\n");

		snd_soc_dapm_enable_pin(&codec->dapm, "Headphones");

		snd_soc_dapm_disable_pin(&codec->dapm, "EPOUT");

		snd_soc_dapm_enable_pin_unlocked(dapm, "Headphones");

		snd_soc_dapm_disable_pin_unlocked(dapm, "EPOUT");

	} else {

		pr_debug("hs_set EP path\n");

		snd_soc_dapm_disable_pin(&codec->dapm, "Headphones");

		snd_soc_dapm_enable_pin(&codec->dapm, "EPOUT");

		snd_soc_dapm_disable_pin_unlocked(dapm, "Headphones");

		snd_soc_dapm_enable_pin_unlocked(dapm, "EPOUT");

	}

	snd_soc_dapm_sync(&codec->dapm);



	snd_soc_dapm_sync_unlocked(dapm);



	snd_soc_dapm_mutex_unlock(dapm);



	hs_switch = ucontrol->value.integer.value[0];



	return 0;
@@ -122,18 +129,20 @@ static int headset_set_switch(struct snd_kcontrol *kcontrol, 


static void lo_enable_out_pins(struct snd_soc_codec *codec)

{

	snd_soc_dapm_enable_pin(&codec->dapm, "IHFOUTL");

	snd_soc_dapm_enable_pin(&codec->dapm, "IHFOUTR");

	snd_soc_dapm_enable_pin(&codec->dapm, "LINEOUTL");

	snd_soc_dapm_enable_pin(&codec->dapm, "LINEOUTR");

	snd_soc_dapm_enable_pin(&codec->dapm, "VIB1OUT");

	snd_soc_dapm_enable_pin(&codec->dapm, "VIB2OUT");

	struct snd_soc_dapm_context *dapm = &codec->dapm;



	snd_soc_dapm_enable_pin_unlocked(dapm, "IHFOUTL");

	snd_soc_dapm_enable_pin_unlocked(dapm, "IHFOUTR");

	snd_soc_dapm_enable_pin_unlocked(dapm, "LINEOUTL");

	snd_soc_dapm_enable_pin_unlocked(dapm, "LINEOUTR");

	snd_soc_dapm_enable_pin_unlocked(dapm, "VIB1OUT");

	snd_soc_dapm_enable_pin_unlocked(dapm, "VIB2OUT");

	if (hs_switch) {

		snd_soc_dapm_enable_pin(&codec->dapm, "Headphones");

		snd_soc_dapm_disable_pin(&codec->dapm, "EPOUT");

		snd_soc_dapm_enable_pin_unlocked(dapm, "Headphones");

		snd_soc_dapm_disable_pin_unlocked(dapm, "EPOUT");

	} else {

		snd_soc_dapm_disable_pin(&codec->dapm, "Headphones");

		snd_soc_dapm_enable_pin(&codec->dapm, "EPOUT");

		snd_soc_dapm_disable_pin_unlocked(dapm, "Headphones");

		snd_soc_dapm_enable_pin_unlocked(dapm, "EPOUT");

	}

}
@@ -148,44 +157,52 @@ static int lo_set_switch(struct snd_kcontrol *kcontrol, 
	struct snd_ctl_elem_value *ucontrol)

{

	struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);

	struct snd_soc_dapm_context *dapm = &codec->dapm;



	if (ucontrol->value.integer.value[0] == lo_dac)

		return 0;



	snd_soc_dapm_mutex_lock(dapm);



	/* we dont want to work with last state of lineout so just enable all

	 * pins and then disable pins not required

	 */

	lo_enable_out_pins(codec);



	switch (ucontrol->value.integer.value[0]) {

	case 0:

		pr_debug("set vibra path\n");

		snd_soc_dapm_disable_pin(&codec->dapm, "VIB1OUT");

		snd_soc_dapm_disable_pin(&codec->dapm, "VIB2OUT");

		snd_soc_dapm_disable_pin_unlocked(dapm, "VIB1OUT");

		snd_soc_dapm_disable_pin_unlocked(dapm, "VIB2OUT");

		snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0);

		break;



	case 1:

		pr_debug("set hs  path\n");

		snd_soc_dapm_disable_pin(&codec->dapm, "Headphones");

		snd_soc_dapm_disable_pin(&codec->dapm, "EPOUT");

		snd_soc_dapm_disable_pin_unlocked(dapm, "Headphones");

		snd_soc_dapm_disable_pin_unlocked(dapm, "EPOUT");

		snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0x22);

		break;



	case 2:

		pr_debug("set spkr path\n");

		snd_soc_dapm_disable_pin(&codec->dapm, "IHFOUTL");

		snd_soc_dapm_disable_pin(&codec->dapm, "IHFOUTR");

		snd_soc_dapm_disable_pin_unlocked(dapm, "IHFOUTL");

		snd_soc_dapm_disable_pin_unlocked(dapm, "IHFOUTR");

		snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0x44);

		break;



	case 3:

		pr_debug("set null path\n");

		snd_soc_dapm_disable_pin(&codec->dapm, "LINEOUTL");

		snd_soc_dapm_disable_pin(&codec->dapm, "LINEOUTR");

		snd_soc_dapm_disable_pin_unlocked(dapm, "LINEOUTL");

		snd_soc_dapm_disable_pin_unlocked(dapm, "LINEOUTR");

		snd_soc_update_bits(codec, SN95031_LOCTL, 0x66, 0x66);

		break;

	}

	snd_soc_dapm_sync(&codec->dapm);



	snd_soc_dapm_sync_unlocked(dapm);



	snd_soc_dapm_mutex_unlock(dapm);



	lo_dac = ucontrol->value.integer.value[0];

	return 0;

}