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authorMark Brown <broonie@opensource.wolfsonmicro.com>2010-08-13 12:58:20 +0100
committerMark Brown <broonie@opensource.wolfsonmicro.com>2010-08-13 14:55:13 +0100
commitb6b056911af54b40a996fdb751d441158d8078b6 (patch)
tree102beb002e9b59f6dfac88765bfe5731698490ed /sound
parent0c17b393942e4363061b61ca58f4d35a01b41ab3 (diff)
downloadlinux-linaro-android-b6b056911af54b40a996fdb751d441158d8078b6.tar.gz
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.c20
1 files changed, 13 insertions, 7 deletions
diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c
index 2dc9daa95be..522249d5c2b 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;