lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

ASoC: WM8994: Don't disable the AIF[1|2]CLK_ENA unconditionaly

Browse Source 
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
This commit is contained in:
Dimitris Papastamos 2011-02-28 17:24:11 +00:00 committed by Mark Brown
parent 3ee845acba
commit a3cff81ac1
1 changed files with 19 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
sound/soc/codecs/wm8994.c
View File

@ -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;