summaryrefslogtreecommitdiffstats
path: root/sound/soc/codecs/wm8990.c
diff options
context:
space:
mode:
Diffstat (limited to 'sound/soc/codecs/wm8990.c')
-rw-r--r--sound/soc/codecs/wm8990.c43
1 files changed, 34 insertions, 9 deletions
diff --git a/sound/soc/codecs/wm8990.c b/sound/soc/codecs/wm8990.c
index 572d22b0880b..5b5afc144478 100644
--- a/sound/soc/codecs/wm8990.c
+++ b/sound/soc/codecs/wm8990.c
@@ -106,6 +106,7 @@ static const u16 wm8990_reg[] = {
0x0008, /* R60 - PLL1 */
0x0031, /* R61 - PLL2 */
0x0026, /* R62 - PLL3 */
+ 0x0000, /* R63 - Driver internal */
};
/*
@@ -126,10 +127,9 @@ static inline void wm8990_write_reg_cache(struct snd_soc_codec *codec,
unsigned int reg, unsigned int value)
{
u16 *cache = codec->reg_cache;
- BUG_ON(reg > (ARRAY_SIZE(wm8990_reg)) - 1);
- /* Reset register is uncached */
- if (reg == 0)
+ /* Reset register and reserved registers are uncached */
+ if (reg == 0 || reg > ARRAY_SIZE(wm8990_reg) - 1)
return;
cache[reg] = value;
@@ -1172,7 +1172,8 @@ static int wm8990_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
* Set PCM DAI bit size and sample rate.
*/
static int wm8990_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params)
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_device *socdev = rtd->socdev;
@@ -1222,8 +1223,14 @@ static int wm8990_set_bias_level(struct snd_soc_codec *codec,
switch (level) {
case SND_SOC_BIAS_ON:
break;
+
case SND_SOC_BIAS_PREPARE:
+ /* VMID=2*50k */
+ val = wm8990_read_reg_cache(codec, WM8990_POWER_MANAGEMENT_1) &
+ ~WM8990_VMID_MODE_MASK;
+ wm8990_write(codec, WM8990_POWER_MANAGEMENT_1, val | 0x2);
break;
+
case SND_SOC_BIAS_STANDBY:
if (codec->bias_level == SND_SOC_BIAS_OFF) {
/* Enable all output discharge bits */
@@ -1272,10 +1279,17 @@ static int wm8990_set_bias_level(struct snd_soc_codec *codec,
/* disable POBCTRL, SOFT_ST and BUFDCOPEN */
wm8990_write(codec, WM8990_ANTIPOP2, WM8990_BUFIOEN);
- } else {
- /* ON -> standby */
+ /* Enable workaround for ADC clocking issue. */
+ wm8990_write(codec, WM8990_EXT_ACCESS_ENA, 0x2);
+ wm8990_write(codec, WM8990_EXT_CTL1, 0xa003);
+ wm8990_write(codec, WM8990_EXT_ACCESS_ENA, 0);
}
+
+ /* VMID=2*250k */
+ val = wm8990_read_reg_cache(codec, WM8990_POWER_MANAGEMENT_1) &
+ ~WM8990_VMID_MODE_MASK;
+ wm8990_write(codec, WM8990_POWER_MANAGEMENT_1, val | 0x4);
break;
case SND_SOC_BIAS_OFF:
@@ -1349,8 +1363,7 @@ struct snd_soc_dai wm8990_dai = {
.rates = WM8990_RATES,
.formats = WM8990_FORMATS,},
.ops = {
- .hw_params = wm8990_hw_params,},
- .dai_ops = {
+ .hw_params = wm8990_hw_params,
.digital_mute = wm8990_mute,
.set_fmt = wm8990_set_dai_fmt,
.set_clkdiv = wm8990_set_dai_clkdiv,
@@ -1449,7 +1462,7 @@ static int wm8990_init(struct snd_soc_device *socdev)
wm8990_add_controls(codec);
wm8990_add_widgets(codec);
- ret = snd_soc_register_card(socdev);
+ ret = snd_soc_init_card(socdev);
if (ret < 0) {
printk(KERN_ERR "wm8990: failed to register card\n");
goto card_err;
@@ -1630,6 +1643,18 @@ struct snd_soc_codec_device soc_codec_dev_wm8990 = {
};
EXPORT_SYMBOL_GPL(soc_codec_dev_wm8990);
+static int __init wm8990_modinit(void)
+{
+ return snd_soc_register_dai(&wm8990_dai);
+}
+module_init(wm8990_modinit);
+
+static void __exit wm8990_exit(void)
+{
+ snd_soc_unregister_dai(&wm8990_dai);
+}
+module_exit(wm8990_exit);
+
MODULE_DESCRIPTION("ASoC WM8990 driver");
MODULE_AUTHOR("Liam Girdwood");
MODULE_LICENSE("GPL");