diff options
| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2010-08-13 13:58:20 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2010-08-13 15:55:13 +0200 |
| commit | b6b056911af54b40a996fdb751d441158d8078b6 (patch) | |
| tree | 102beb002e9b59f6dfac88765bfe5731698490ed /sound | |
| parent | ASoC: Optimise DSP performance for WM8994 (diff) | |
| download | linux-b6b056911af54b40a996fdb751d441158d8078b6.tar.xz linux-b6b056911af54b40a996fdb751d441158d8078b6.zip | |
ASoC: Only tweak WM8994 chip configuration on devices up to rev D
Any subsequent revisions will have these configuration changes applied
by default.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/codecs/wm8994.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c index 2dc9daa95bed..522249d5c2b4 100644 --- a/sound/soc/codecs/wm8994.c +++ b/sound/soc/codecs/wm8994.c @@ -95,6 +95,7 @@ struct wm8994_priv { struct wm8994_micdet micdet[2]; + int revision; struct wm8994_pdata *pdata; }; @@ -3070,6 +3071,8 @@ static int wm8994_set_dai_sysclk(struct snd_soc_dai *dai, static int wm8994_set_bias_level(struct snd_soc_codec *codec, enum snd_soc_bias_level level) { + struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec); + switch (level) { case SND_SOC_BIAS_ON: break; @@ -3084,10 +3087,14 @@ static int wm8994_set_bias_level(struct snd_soc_codec *codec, if (codec->bias_level == SND_SOC_BIAS_OFF) { /* Tweak DC servo and DSP configuration for * improved performance. */ - snd_soc_write(codec, 0x102, 0x3); - snd_soc_write(codec, 0x56, 0x3); - snd_soc_write(codec, 0x817, 0); - snd_soc_write(codec, 0x102, 0); + if (wm8994->revision < 4) { + /* Tweak DC servo and DSP configuration for + * improved performance. */ + snd_soc_write(codec, 0x102, 0x3); + snd_soc_write(codec, 0x56, 0x3); + snd_soc_write(codec, 0x817, 0); + snd_soc_write(codec, 0x102, 0); + } /* Discharge LINEOUT1 & 2 */ snd_soc_update_bits(codec, WM8994_ANTIPOP_1, @@ -3920,7 +3927,6 @@ static int wm8994_codec_probe(struct platform_device *pdev) struct wm8994_priv *wm8994; struct snd_soc_codec *codec; int i; - u16 rev; if (wm8994_codec) { dev_err(&pdev->dev, "Another WM8994 is registered\n"); @@ -3974,8 +3980,8 @@ static int wm8994_codec_probe(struct platform_device *pdev) wm8994->reg_cache[i] = 0; /* Set revision-specific configuration */ - rev = snd_soc_read(codec, WM8994_CHIP_REVISION); - switch (rev) { + wm8994->revision = snd_soc_read(codec, WM8994_CHIP_REVISION); + switch (wm8994->revision) { case 2: case 3: wm8994->hubs.dcs_codes = -5; |