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-rw-r--r--sound/soc/codecs/wm8510.c32
1 files changed, 24 insertions, 8 deletions
diff --git a/sound/soc/codecs/wm8510.c b/sound/soc/codecs/wm8510.c
index 142c49bf18e6..94cab495d5f3 100644
--- a/sound/soc/codecs/wm8510.c
+++ b/sound/soc/codecs/wm8510.c
@@ -55,6 +55,9 @@ static const u16 wm8510_reg[WM8510_CACHEREGNUM] = {
55 0x0001, 55 0x0001,
56}; 56};
57 57
58#define WM8510_POWER1_BIASEN 0x08
59#define WM8510_POWER1_BUFIOEN 0x10
60
58/* 61/*
59 * read wm8510 register cache 62 * read wm8510 register cache
60 */ 63 */
@@ -526,23 +529,35 @@ static int wm8510_mute(struct snd_soc_dai *dai, int mute)
526static int wm8510_set_bias_level(struct snd_soc_codec *codec, 529static int wm8510_set_bias_level(struct snd_soc_codec *codec,
527 enum snd_soc_bias_level level) 530 enum snd_soc_bias_level level)
528{ 531{
532 u16 power1 = wm8510_read_reg_cache(codec, WM8510_POWER1) & ~0x3;
529 533
530 switch (level) { 534 switch (level) {
531 case SND_SOC_BIAS_ON: 535 case SND_SOC_BIAS_ON:
532 wm8510_write(codec, WM8510_POWER1, 0x1ff);
533 wm8510_write(codec, WM8510_POWER2, 0x1ff);
534 wm8510_write(codec, WM8510_POWER3, 0x1ff);
535 break;
536 case SND_SOC_BIAS_PREPARE: 536 case SND_SOC_BIAS_PREPARE:
537 power1 |= 0x1; /* VMID 50k */
538 wm8510_write(codec, WM8510_POWER1, power1);
539 break;
540
537 case SND_SOC_BIAS_STANDBY: 541 case SND_SOC_BIAS_STANDBY:
542 power1 |= WM8510_POWER1_BIASEN | WM8510_POWER1_BUFIOEN;
543
544 if (codec->bias_level == SND_SOC_BIAS_OFF) {
545 /* Initial cap charge at VMID 5k */
546 wm8510_write(codec, WM8510_POWER1, power1 | 0x3);
547 mdelay(100);
548 }
549
550 power1 |= 0x2; /* VMID 500k */
551 wm8510_write(codec, WM8510_POWER1, power1);
538 break; 552 break;
553
539 case SND_SOC_BIAS_OFF: 554 case SND_SOC_BIAS_OFF:
540 /* everything off, dac mute, inactive */ 555 wm8510_write(codec, WM8510_POWER1, 0);
541 wm8510_write(codec, WM8510_POWER1, 0x0); 556 wm8510_write(codec, WM8510_POWER2, 0);
542 wm8510_write(codec, WM8510_POWER2, 0x0); 557 wm8510_write(codec, WM8510_POWER3, 0);
543 wm8510_write(codec, WM8510_POWER3, 0x0);
544 break; 558 break;
545 } 559 }
560
546 codec->bias_level = level; 561 codec->bias_level = level;
547 return 0; 562 return 0;
548} 563}
@@ -640,6 +655,7 @@ static int wm8510_init(struct snd_soc_device *socdev)
640 } 655 }
641 656
642 /* power on device */ 657 /* power on device */
658 codec->bias_level = SND_SOC_BIAS_OFF;
643 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 659 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
644 wm8510_add_controls(codec); 660 wm8510_add_controls(codec);
645 wm8510_add_widgets(codec); 661 wm8510_add_widgets(codec);