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Message-Id: <1392736948-26623-11-git-send-email-ckeepax@opensource.wolfsonmicro.com>
Date: Tue, 18 Feb 2014 15:22:21 +0000
From: Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>
To: broonie@...nel.org
Cc: myungjoo.ham@...sung.com, cw00.choi@...sung.com,
dmitry.torokhov@...il.com, lgirdwood@...il.com, lars@...afoo.de,
peter.ujfalusi@...com, jarkko.nikula@...mer.com,
eric.y.miao@...il.com, haojian.zhuang@...il.com,
linux-kernel@...r.kernel.org, patches@...nsource.wolfsonmicro.com,
alsa-devel@...a-project.org, linux@....linux.org.uk
Subject: [PATCH 10/17 v2] 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: Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>
---
sound/soc/intel/mfld_machine.c | 65 +++++++++++++++++++++++++---------------
1 files changed, 41 insertions(+), 24 deletions(-)
diff --git a/sound/soc/intel/mfld_machine.c b/sound/soc/intel/mfld_machine.c
index d3d4c32..0cef32e 100644
--- a/sound/soc/intel/mfld_machine.c
+++ b/sound/soc/intel/mfld_machine.c
@@ -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;
}
--
1.7.2.5
--
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