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authorDimitris Papastamos <dp@opensource.wolfsonmicro.com>2011-02-28 20:24:11 +0300
committerMark Brown <broonie@opensource.wolfsonmicro.com>2011-03-02 02:27:00 +0300
commita3cff81ac19ace1ce5ba3fc88e46aea2cb4ebe1a (patch)
tree3ecbfaf382e1b5e1bee999fe3536b974f3b9b2bd /sound
parent3ee845acba58549578d03a46ed307c0a56c7f777 (diff)
downloadlinux-a3cff81ac19ace1ce5ba3fc88e46aea2cb4ebe1a.tar.xz
ASoC: WM8994: Don't disable the AIF[1|2]CLK_ENA unconditionaly
Since we began using the late clock disable functionality, ensure that we don't disable the clock if any of the ADC or DAC paths are still enabled. This happens when we have simultaneous playback and recording. Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: stable@kernel.org
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/codecs/wm8994.c25
1 files changed, 19 insertions, 6 deletions
diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c
index ebaee5ca7434..9e91525eddaa 100644
--- a/sound/soc/codecs/wm8994.c
+++ b/sound/soc/codecs/wm8994.c
@@ -110,6 +110,9 @@ struct wm8994_priv {
unsigned int aif1clk_enable:1;
unsigned int aif2clk_enable:1;
+
+ unsigned int aif1clk_disable:1;
+ unsigned int aif2clk_disable:1;
};
static int wm8994_readable(unsigned int reg)
@@ -1015,14 +1018,18 @@ static int late_enable_ev(struct snd_soc_dapm_widget *w,
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
- if (wm8994->aif1clk_enable)
+ if (wm8994->aif1clk_enable) {
snd_soc_update_bits(codec, WM8994_AIF1_CLOCKING_1,
WM8994_AIF1CLK_ENA_MASK,
WM8994_AIF1CLK_ENA);
- if (wm8994->aif2clk_enable)
+ wm8994->aif1clk_enable = 0;
+ }
+ if (wm8994->aif2clk_enable) {
snd_soc_update_bits(codec, WM8994_AIF2_CLOCKING_1,
WM8994_AIF2CLK_ENA_MASK,
WM8994_AIF2CLK_ENA);
+ wm8994->aif2clk_enable = 0;
+ }
break;
}
@@ -1037,15 +1044,15 @@ static int late_disable_ev(struct snd_soc_dapm_widget *w,
switch (event) {
case SND_SOC_DAPM_POST_PMD:
- if (wm8994->aif1clk_enable) {
+ if (wm8994->aif1clk_disable) {
snd_soc_update_bits(codec, WM8994_AIF1_CLOCKING_1,
WM8994_AIF1CLK_ENA_MASK, 0);
- wm8994->aif1clk_enable = 0;
+ wm8994->aif1clk_disable = 0;
}
- if (wm8994->aif2clk_enable) {
+ if (wm8994->aif2clk_disable) {
snd_soc_update_bits(codec, WM8994_AIF2_CLOCKING_1,
WM8994_AIF2CLK_ENA_MASK, 0);
- wm8994->aif2clk_enable = 0;
+ wm8994->aif2clk_disable = 0;
}
break;
}
@@ -1063,6 +1070,9 @@ static int aif1clk_ev(struct snd_soc_dapm_widget *w,
case SND_SOC_DAPM_PRE_PMU:
wm8994->aif1clk_enable = 1;
break;
+ case SND_SOC_DAPM_POST_PMD:
+ wm8994->aif1clk_disable = 1;
+ break;
}
return 0;
@@ -1078,6 +1088,9 @@ static int aif2clk_ev(struct snd_soc_dapm_widget *w,
case SND_SOC_DAPM_PRE_PMU:
wm8994->aif2clk_enable = 1;
break;
+ case SND_SOC_DAPM_POST_PMD:
+ wm8994->aif2clk_disable = 1;
+ break;
}
return 0;