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改善codec mic 串音问题

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This commit is contained in:
陈金泉
2011-07-07 11:06:11 +08:00
parent c235b1c629
commit c6f61fe1bf
1 changed files with 49 additions and 10 deletions
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59
sound/soc/codecs/wm8900.c
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@@ -152,11 +152,16 @@
#define WM8900_IS_SHUTDOWN 0
#define WM8900_IS_STARTUP 1
#define WM8900_WORK_NULL 0
#define WM8900_WORK_POWERDOWN_PLAYBACK 1
#define WM8900_WORK_POWERDOWN_CAPTURE 2
#define WM8900_WORK_POWERDOWN_PLAYBACK_CAPTURE 3
static void wm8900_work(struct work_struct *work);
static struct workqueue_struct *wm8900_workq;
static DECLARE_DELAYED_WORK(delayed_work, wm8900_work);
static int wm8900_current_status = WM8900_IS_SHUTDOWN;
static int wm8900_current_status = WM8900_IS_SHUTDOWN, wm8900_work_type = WM8900_WORK_NULL;
struct snd_soc_codec_device soc_codec_dev_wm8900;
static struct snd_soc_codec *wm8900_codec;
@@ -248,6 +253,8 @@ static void wm8900_powerdown(void)
{
printk("Power down wm8900\n");
snd_soc_write(wm8900_codec, WM8900_REG_POWER1, 0x210D);
if (wm8900_current_status != WM8900_IS_SHUTDOWN) {
#ifdef SPK_CON
gpio_set_value(SPK_CON, GPIO_LOW);
@@ -260,9 +267,22 @@ static void wm8900_powerdown(void)
static void wm8900_work(struct work_struct *work)
{
WM8900_DBG("Enter::wm8900_work\n");
WM8900_DBG("Enter::wm8900_work : wm8900_work_type = %d\n", wm8900_work_type);
wm8900_powerdown();
switch (wm8900_work_type) {
case WM8900_WORK_POWERDOWN_PLAYBACK :
break;
case WM8900_WORK_POWERDOWN_CAPTURE:
snd_soc_write(wm8900_codec, WM8900_REG_POWER1, 0x210D);
break;
case WM8900_WORK_POWERDOWN_PLAYBACK_CAPTURE:
wm8900_powerdown();
break;
default:
break;
}
wm8900_work_type = WM8900_WORK_NULL;
}
static void wm8900_set_hw(struct snd_soc_codec *codec)
@@ -292,7 +312,7 @@ static void wm8900_set_hw(struct snd_soc_codec *codec)
snd_soc_write(codec, WM8900_REG_HPCTL1, 0xC0);
//for recorder
snd_soc_write(codec, WM8900_REG_POWER1, 0x211D);
snd_soc_write(codec, WM8900_REG_POWER1, 0x210D);
snd_soc_write(codec, WM8900_REG_POWER2, 0xC1AF);
snd_soc_write(codec, WM8900_REG_LADC_DV, 0x01C0);
@@ -710,14 +730,24 @@ static int wm8900_startup(struct snd_pcm_substream *substream,
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_device *socdev = rtd->socdev;
struct snd_soc_codec *codec = socdev->card->codec;
struct snd_soc_dai_link *machine = rtd->dai;
struct snd_soc_dai *codec_dai = machine->codec_dai;
WM8900_DBG("Enter::%s----%d substream->stream:%s \n",__FUNCTION__,__LINE__,
substream->stream == SNDRV_PCM_STREAM_PLAYBACK ? "PLAYBACK":"CAPTURE");
cancel_delayed_work_sync(&delayed_work);
wm8900_work_type = WM8900_WORK_NULL;
wm8900_set_hw(codec);
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE ||
codec_dai->capture.active) {
snd_soc_write(codec, WM8900_REG_POWER1, 0x211D);
} else if (!codec_dai->capture.active) {
snd_soc_write(codec, WM8900_REG_POWER1, 0x210D);
}
return 0;
}
@@ -728,16 +758,24 @@ static void wm8900_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai_link *machine = rtd->dai;
struct snd_soc_dai *codec_dai = machine->codec_dai;
WM8900_DBG("Enter::%s----%d substream->stream:%s \n",__FUNCTION__,__LINE__,
substream->stream == SNDRV_PCM_STREAM_PLAYBACK ? "PLAYBACK":"CAPTURE");
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE &&
wm8900_work_type == WM8900_WORK_NULL) {
cancel_delayed_work_sync(&delayed_work);
wm8900_work_type = WM8900_WORK_POWERDOWN_CAPTURE;
queue_delayed_work(wm8900_workq, &delayed_work,
msecs_to_jiffies(3000));
}
#ifdef WM8900_NO_POWEROFF
return; /* Let codec not going to power off for pop noise */
#endif
WM8900_DBG("Enter::%s----%d substream->stream:%s \n",__FUNCTION__,__LINE__,
substream->stream == SNDRV_PCM_STREAM_PLAYBACK ? "PLAYBACK":"CAPTURE");
if (!codec_dai->capture.active && !codec_dai->playback.active) {
cancel_delayed_work_sync(&delayed_work);
wm8900_work_type = WM8900_WORK_NULL;
/* If codec is already shutdown, return */
if (wm8900_current_status == WM8900_IS_SHUTDOWN)
@@ -745,6 +783,8 @@ static void wm8900_shutdown(struct snd_pcm_substream *substream,
WM8900_DBG("Is going to power down wm8900\n");
wm8900_work_type = WM8900_WORK_POWERDOWN_PLAYBACK_CAPTURE;
/* If codec is useless, queue work to close it */
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
queue_delayed_work(wm8900_workq, &delayed_work,
@@ -778,9 +818,7 @@ static int wm8900_trigger(struct snd_pcm_substream *substream,
return 0;
}
#define WM8900_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
#define WM8900_RATES SNDRV_PCM_RATE_44100
#define WM8900_PCM_FORMATS \
(SNDRV_PCM_FORMAT_S16_LE | SNDRV_PCM_FORMAT_S20_3LE | \
@@ -929,6 +967,7 @@ static int wm8900_suspend(struct platform_device *pdev, pm_message_t state)
WM8900_DBG("Enter:%s, %d \n", __FUNCTION__, __LINE__);
cancel_delayed_work_sync(&delayed_work);
wm8900_work_type = WM8900_WORK_NULL;
#ifdef WM8900_NO_POWEROFF
wm8900_powerdown();