diff options
Diffstat (limited to 'sound/soc/codecs/vt1603.c')
| -rwxr-xr-x | sound/soc/codecs/vt1603.c | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/sound/soc/codecs/vt1603.c b/sound/soc/codecs/vt1603.c index 3df20e54..f9345686 100755 --- a/sound/soc/codecs/vt1603.c +++ b/sound/soc/codecs/vt1603.c @@ -71,10 +71,16 @@ struct vt1603_boardinfo { int timer_del; //2014-1-20 tvbox int out_on; //2014-4-29 av out on for tvbox noisy. hw not good! + unsigned char in_record; + unsigned char trigger_stat; }; static struct vt1603_boardinfo vt1603_boardinfo; extern int wmt_getsyspara(char *varname, unsigned char *varval, int *varlen); +static struct work_struct vt1603_hw_mute_work; + +/* codec hw configuration */ +static int hw_mute_flag = 0; static const u16 vt1603_regs[] = { 0x0020, 0x00D7, 0x00D7, 0x0004, /* 0-3 */ @@ -810,8 +816,107 @@ static int vt1603_set_bias_level(struct snd_soc_codec *codec, return 0; } +static int vt1603_mute(struct snd_soc_dai *dai, int mute) +{ + struct snd_soc_codec *codec = dai->codec; + u16 reg = snd_soc_read(codec, VT1603_R0b); + + if (mute) + reg |= BIT0; + else + reg &= ~BIT0; + + snd_soc_write(codec, VT1603_R0b, reg); + + return 0; +} + +/* + * The defferent between vt1603_hw_mute and vt1603_mute is that + * vt1603_mute only do software mute, while vt1603_hw_mute + * let L/R channel power down. + */ +static int vt1603_hw_mute(struct snd_soc_codec *codec, int mute) +{ + u16 reg; + + /* If current output mixer connect to AA, means that it's in incall mode, + * don't power down class-d channels. + */ + /*reg = snd_soc_read(codec, VT1603_R71); + if (reg & BIT3 || reg & BIT2) + return 0;*/ + + reg = snd_soc_read(codec, VT1603_R82); + if (mute) + reg |= BIT4+BIT3; + else + reg &= ~(BIT4+BIT3); + + snd_soc_write(codec, VT1603_R82, reg); + + return 0; +} + +static void vt1603_do_hw_mute_work(struct work_struct *work ) +{ + struct snd_soc_codec *codec = gvt1603_codec; + u16 reg; + + vt1603_hw_mute(codec, hw_mute_flag); + + if (vt1603_boardinfo.in_record) + if (vt1603_boardinfo.trigger_stat == SNDRV_PCM_TRIGGER_START) { + reg = snd_soc_read(codec, VT1603_R63); + reg |= (BIT6 | BIT7); + snd_soc_write(codec, VT1603_R63, reg); + } + else if (vt1603_boardinfo.trigger_stat == SNDRV_PCM_TRIGGER_STOP) { + reg = snd_soc_read(codec, VT1603_R63); + reg &= ~(BIT6 | BIT7); + snd_soc_write(codec, VT1603_R63, reg); + + vt1603_boardinfo.in_record = 0; + } +} + +/* + * vt1603_trigger to disable/enable channels output while pcm stream is + * pause/playing. Avoid sharp noise while pcm stream is not playing. + * Note that don't add printk that will cause a loud POP. + */ +static int vt1603_trigger(struct snd_pcm_substream *substream, + int cmd, struct snd_soc_dai *codec_dai) +{ + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + hw_mute_flag = 0; + if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { + vt1603_boardinfo.in_record = 1; + vt1603_boardinfo.trigger_stat = SNDRV_PCM_TRIGGER_START; + } + break; + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + hw_mute_flag = 1; + if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) + vt1603_boardinfo.trigger_stat = SNDRV_PCM_TRIGGER_STOP; + break; + } + + schedule_work(&vt1603_hw_mute_work); + return 0; +} + static struct snd_soc_dai_ops vt1603_dai_ops = { .hw_params = vt1603_pcm_hw_params, + .digital_mute = vt1603_mute, + .trigger = vt1603_trigger, .set_fmt = vt1603_set_dai_fmt, .set_sysclk = vt1603_set_dai_sysclk, }; @@ -1210,6 +1315,7 @@ static int vt1603_codec_probe(struct snd_soc_codec *codec) vt1603_codec_init(codec); vt1603_set_bias_level(codec, SND_SOC_BIAS_PREPARE); + INIT_WORK(&vt1603_hw_mute_work, vt1603_do_hw_mute_work); INIT_WORK(&vt1603->work, vt1603_codec_irq_handle); if (!vt1603_boardinfo.timer_del) { //add 2014-1-20 tvbox init_timer(&vt1603->timer); |