[alsa-devel] [EXT] Re: [PATCH] ASoC: sgtl5000: Revert "ASoC: sgtl5000: Fix of unmute outputs on probe"

[Alison Wang]

Hi, Oleksandr,

In your patch, outputs and ADC are muted on driver probing. I don't know when and
where they can be unmuted in the kernel before playing in the application.

Could you please give me some ideas?


Best Regards,
Alison Wang

> -----Original Message-----
> From: Alison Wang
> Sent: Thursday, December 12, 2019 5:25 PM
> To: Oleksandr Suvorov <oleksandr.suvorov at toradex.com>
> Cc: Marcel Ziswiler <marcel.ziswiler at toradex.com>; Igor Opaniuk
> <igor.opaniuk at toradex.com>; festevam at gmail.com; broonie at kernel.org;
> lgirdwood at gmail.com; alsa-devel at alsa-project.org;
> linux-kernel at vger.kernel.org
> Subject: RE: [EXT] Re: [PATCH] ASoC: sgtl5000: Revert "ASoC: sgtl5000: Fix of
> unmute outputs on probe"
> 
> Hi, Oleksandr,
> 
> I think I have explained the reason in my email which sent to you yesterday. I
> attached it too.
> According to my test on the boards, MUTE_LO, MUTE_HP and MUTE_ADC are
> all muted when playing the sound.
> 
> Could you give me some ideas about this issue?
> 
> 
> Best Regards,I
> Alison Wang
> 
> 
> > -----Original Message-----
> > From: Oleksandr Suvorov <oleksandr.suvorov at toradex.com>
> > Sent: Thursday, December 12, 2019 5:11 PM
> > To: Alison Wang <alison.wang at nxp.com>
> > Cc: Marcel Ziswiler <marcel.ziswiler at toradex.com>; Igor Opaniuk
> > <igor.opaniuk at toradex.com>; festevam at gmail.com; broonie at kernel.org;
> > lgirdwood at gmail.com; Oleksandr Suvorov
> <oleksandr.suvorov at toradex.com>;
> > alsa-devel at alsa-project.org; linux-kernel at vger.kernel.org
> > Subject: [EXT] Re: [PATCH] ASoC: sgtl5000: Revert "ASoC: sgtl5000: Fix of
> > unmute outputs on probe"
> >
> > Caution: EXT Email
> >
> > Alison, could you please explain, what reason to revert this fix? All these
> blocks
> > have their own control and unmute on demand.
> > Why do you stand on unconditional unmuting of outputs and ADC on driver
> > probing?
> >
> > On Thu, Dec 12, 2019 at 9:20 AM Alison Wang <alison.wang at nxp.com>
> > wrote:
> > >
> > > This reverts commit 631bc8f0134ae9620d86a96b8c5f9445d91a2dca.
> > >
> > > In commit 631bc8f0134a, snd_soc_component_update_bits is used instead
> > > of snd_soc_component_write. Although EN_HP_ZCD and EN_ADC_ZCD are
> > > enabled in ANA_CTRL register, MUTE_LO, MUTE_HP and MUTE_ADC bits
> are
> > > remained as the default value. It causes LO, HP and ADC are all muted
> > > after driver probe.
> > >
> > > The patch is to revert this commit, snd_soc_component_write is still
> > > used and MUTE_LO, MUTE_HP and MUTE_ADC are set as zero (unmuted).
> > >
> > > Signed-off-by: Alison Wang <alison.wang at nxp.com>
> > > ---
> > >  sound/soc/codecs/sgtl5000.c | 6 +++---
> > >  1 file changed, 3 insertions(+), 3 deletions(-)
> > >
> > > diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c
> > > index aa1f963..0b35fca 100644
> > > --- a/sound/soc/codecs/sgtl5000.c
> > > +++ b/sound/soc/codecs/sgtl5000.c
> > > @@ -1458,7 +1458,6 @@ static int sgtl5000_probe(struct
> > snd_soc_component *component)
> > >         int ret;
> > >         u16 reg;
> > >         struct sgtl5000_priv *sgtl5000 =
> > snd_soc_component_get_drvdata(component);
> > > -       unsigned int zcd_mask = SGTL5000_HP_ZCD_EN |
> > SGTL5000_ADC_ZCD_EN;
> > >
> > >         /* power up sgtl5000 */
> > >         ret = sgtl5000_set_power_regs(component);
> > > @@ -1486,8 +1485,9 @@ static int sgtl5000_probe(struct
> > snd_soc_component *component)
> > >                0x1f);
> > >         snd_soc_component_write(component,
> > SGTL5000_CHIP_PAD_STRENGTH,
> > > reg);
> > >
> > > -       snd_soc_component_update_bits(component,
> > SGTL5000_CHIP_ANA_CTRL,
> > > -               zcd_mask, zcd_mask);
> > > +       snd_soc_component_write(component,
> > SGTL5000_CHIP_ANA_CTRL,
> > > +                       SGTL5000_HP_ZCD_EN |
> > > +                       SGTL5000_ADC_ZCD_EN);
> > >
> > >         snd_soc_component_update_bits(component,
> > SGTL5000_CHIP_MIC_CTRL,
> > >                         SGTL5000_BIAS_R_MASK,
> > > --
> > > 2.9.5
> > >
> >
> >
> > --
> > Best regards
> > Oleksandr Suvorov
> >
> > Toradex AG
> > Altsagenstrasse 5 | 6048 Horw/Luzern | Switzerland | T: +41 41 500
> > 4800 (main line)