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authorMark Brown <broonie@opensource.wolfsonmicro.com>2011-03-11 18:13:12 +0000
committerMark Brown <broonie@opensource.wolfsonmicro.com>2011-03-18 10:52:50 +0000
commitc6b7b57012c8307b936025ad41fcbef6b1b6b52f (patch)
tree5c92f52155ef595fc0dded01101122de6bdafcc1 /sound/soc/codecs/wm8958-dsp2.c
parentf701a2e594e62b35d895ad5ec1db8d2d0714c158 (diff)
downloadtalos-op-linux-c6b7b57012c8307b936025ad41fcbef6b1b6b52f.tar.gz
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ASoC: Handle startup sequencing of WM8958 DSP2 with deferred clocking
The DSP2 startup requires that the clock be enable so if we've deferred clock startup we need to defer DSP2 startup Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Diffstat (limited to 'sound/soc/codecs/wm8958-dsp2.c')
-rw-r--r--sound/soc/codecs/wm8958-dsp2.c35
1 files changed, 14 insertions, 21 deletions
diff --git a/sound/soc/codecs/wm8958-dsp2.c b/sound/soc/codecs/wm8958-dsp2.c
index 4b4c93c20331..f07775ebec04 100644
--- a/sound/soc/codecs/wm8958-dsp2.c
+++ b/sound/soc/codecs/wm8958-dsp2.c
@@ -69,6 +69,13 @@ static void wm8958_mbc_apply(struct snd_soc_codec *codec, int mbc, int start)
if (reg & WM8958_DSP2_ENA)
return;
+ /* If neither AIFnCLK is not yet enabled postpone */
+ if (!(snd_soc_read(codec, WM8994_AIF1_CLOCKING_1)
+ & WM8994_AIF1CLK_ENA_MASK) &&
+ !(snd_soc_read(codec, WM8994_AIF2_CLOCKING_1)
+ & WM8994_AIF2CLK_ENA_MASK))
+ return;
+
/* Switch the clock over to the appropriate AIF */
snd_soc_update_bits(codec, WM8994_CLOCKING_1,
WM8958_DSP2CLK_SRC | WM8958_DSP2CLK_ENA,
@@ -120,32 +127,18 @@ int wm8958_aif_ev(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_codec *codec = w->codec;
- int mbc;
-
- switch (w->shift) {
- case 13:
- case 12:
- mbc = 2;
- break;
- case 11:
- case 10:
- mbc = 1;
- break;
- case 9:
- case 8:
- mbc = 0;
- break;
- default:
- BUG();
- return -EINVAL;
- }
+ int i;
switch (event) {
case SND_SOC_DAPM_POST_PMU:
- wm8958_mbc_apply(codec, mbc, 1);
+ case SND_SOC_DAPM_PRE_PMU:
+ for (i = 0; i < 3; i++)
+ wm8958_mbc_apply(codec, i, 1);
break;
case SND_SOC_DAPM_POST_PMD:
- wm8958_mbc_apply(codec, mbc, 0);
+ case SND_SOC_DAPM_PRE_PMD:
+ for (i = 0; i < 3; i++)
+ wm8958_mbc_apply(codec, i, 0);
break;
}
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