lkml.org 
[lkml]   [2014]   [Feb]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 08/17 v2] ASoC: wm8994: Update locking around use of DAPM pin API
Date
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@opensource.wolfsonmicro.com>
---
sound/soc/codecs/wm8994.c | 45 +++++++++++++++++++++++++++------------------
1 files changed, 27 insertions(+), 18 deletions(-)

diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c
index b9be9cb..e8daf55 100644
--- a/sound/soc/codecs/wm8994.c
+++ b/sound/soc/codecs/wm8994.c
@@ -2549,43 +2549,52 @@ static int wm8994_set_bias_level(struct snd_soc_codec *codec,
int wm8994_vmid_mode(struct snd_soc_codec *codec, enum wm8994_vmid_mode mode)
{
struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);
+ struct snd_soc_dapm_context *dapm = &codec->dapm;

switch (mode) {
case WM8994_VMID_NORMAL:
+ snd_soc_dapm_mutex_lock(dapm);
+
if (wm8994->hubs.lineout1_se) {
- snd_soc_dapm_disable_pin(&codec->dapm,
- "LINEOUT1N Driver");
- snd_soc_dapm_disable_pin(&codec->dapm,
- "LINEOUT1P Driver");
+ snd_soc_dapm_disable_pin_unlocked(dapm,
+ "LINEOUT1N Driver");
+ snd_soc_dapm_disable_pin_unlocked(dapm,
+ "LINEOUT1P Driver");
}
if (wm8994->hubs.lineout2_se) {
- snd_soc_dapm_disable_pin(&codec->dapm,
- "LINEOUT2N Driver");
- snd_soc_dapm_disable_pin(&codec->dapm,
- "LINEOUT2P Driver");
+ snd_soc_dapm_disable_pin_unlocked(dapm,
+ "LINEOUT2N Driver");
+ snd_soc_dapm_disable_pin_unlocked(dapm,
+ "LINEOUT2P Driver");
}

/* Do the sync with the old mode to allow it to clean up */
- snd_soc_dapm_sync(&codec->dapm);
+ snd_soc_dapm_sync_unlocked(dapm);
wm8994->vmid_mode = mode;
+
+ snd_soc_dapm_mutex_unlock(dapm);
break;

case WM8994_VMID_FORCE:
+ snd_soc_dapm_mutex_lock(dapm);
+
if (wm8994->hubs.lineout1_se) {
- snd_soc_dapm_force_enable_pin(&codec->dapm,
- "LINEOUT1N Driver");
- snd_soc_dapm_force_enable_pin(&codec->dapm,
- "LINEOUT1P Driver");
+ snd_soc_dapm_force_enable_pin_unlocked(dapm,
+ "LINEOUT1N Driver");
+ snd_soc_dapm_force_enable_pin_unlocked(dapm,
+ "LINEOUT1P Driver");
}
if (wm8994->hubs.lineout2_se) {
- snd_soc_dapm_force_enable_pin(&codec->dapm,
- "LINEOUT2N Driver");
- snd_soc_dapm_force_enable_pin(&codec->dapm,
- "LINEOUT2P Driver");
+ snd_soc_dapm_force_enable_pin_unlocked(dapm,
+ "LINEOUT2N Driver");
+ snd_soc_dapm_force_enable_pin_unlocked(dapm,
+ "LINEOUT2P Driver");
}

wm8994->vmid_mode = mode;
- snd_soc_dapm_sync(&codec->dapm);
+ snd_soc_dapm_sync_unlocked(dapm);
+
+ snd_soc_dapm_mutex_unlock(dapm);
break;

default:
--
1.7.2.5


\
 
 \ /
  Last update: 2014-02-18 17:21    [W:0.171 / U:0.540 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site