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ASoC: Improve WM8994 digital power sequencing 

On WM8994 revision D and earlier ensure optimal sequencing with
simultaneous usage of AIF1 and AIF2 by tying the signals together
so if paths through both are connected the streams are started
simultaneously.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Cc: stable@kernel.org
This commit is contained in:
Mark Brown 2011-02-03 16:27:35 +00:00
parent 7f94de483f
commit 6ed8f1485f
1 changed files with 12 additions and 0 deletions
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12
sound/soc/codecs/wm8994.c
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@ -1584,6 +1584,13 @@ static const struct snd_soc_dapm_route intercon[] = {
{ "Right Headphone Mux", "DAC", "DAC1R" },
};
static const struct snd_soc_dapm_route wm8994_revd_intercon[] = {
{ "AIF1DACDAT", NULL, "AIF2DACDAT" },
{ "AIF2DACDAT", NULL, "AIF1DACDAT" },
{ "AIF1ADCDAT", NULL, "AIF2ADCDAT" },
{ "AIF2ADCDAT", NULL, "AIF1ADCDAT" },
};
static const struct snd_soc_dapm_route wm8994_intercon[] = {
{ "AIF2DACL", NULL, "AIF2DAC Mux" },
{ "AIF2DACR", NULL, "AIF2DAC Mux" },
@ -3135,6 +3142,11 @@ static int wm8994_codec_probe(struct snd_soc_codec *codec)
case WM8994:
snd_soc_dapm_add_routes(dapm, wm8994_intercon,
ARRAY_SIZE(wm8994_intercon));
if (wm8994->revision < 4)
snd_soc_dapm_add_routes(dapm, wm8994_revd_intercon,
ARRAY_SIZE(wm8994_revd_intercon));
break;
case WM8958:
snd_soc_dapm_add_routes(dapm, wm8958_intercon,