| Message ID | 20240118165811.13672-3-johan+linaro@kernel.org (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | ASoC: qcom: volume fixes and codec cleanups | expand |
On Thu, Jan 18, 2024 at 05:58:08PM +0100, Johan Hovold wrote: > The default PA gain is set to a pretty high level of 15 dB. Initialise > the register to the minimum -3 dB level instead. > > This is specifically needed to allow machine drivers to use the lowest > level as a volume limit. > @@ -722,7 +722,7 @@ static struct reg_default wsa883x_defaults[] = { > { WSA883X_WAVG_PER_6_7, 0x88 }, > { WSA883X_WAVG_STA, 0x00 }, > { WSA883X_DRE_CTL_0, 0x70 }, > - { WSA883X_DRE_CTL_1, 0x08 }, > + { WSA883X_DRE_CTL_1, 0x1e }, This is broken, the register defaults provided to regmap need to correspond to whatever the hardware default is since for example a register cache sync will not write back any default values (as they should already be there in the hardware). Anything like this would need to be done by writes during init.
On 18/01/2024 16:58, Johan Hovold wrote: > The default PA gain is set to a pretty high level of 15 dB. Initialise > the register to the minimum -3 dB level instead. > > This is specifically needed to allow machine drivers to use the lowest > level as a volume limit. > > Cc: stable@vger.kernel.org # 6.5 > Signed-off-by: Johan Hovold <johan+linaro@kernel.org> > --- > sound/soc/codecs/wsa883x.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/sound/soc/codecs/wsa883x.c b/sound/soc/codecs/wsa883x.c > index 32983ca9afba..8942c88dee09 100644 > --- a/sound/soc/codecs/wsa883x.c > +++ b/sound/soc/codecs/wsa883x.c > @@ -722,7 +722,7 @@ static struct reg_default wsa883x_defaults[] = { > { WSA883X_WAVG_PER_6_7, 0x88 }, > { WSA883X_WAVG_STA, 0x00 }, > { WSA883X_DRE_CTL_0, 0x70 }, > - { WSA883X_DRE_CTL_1, 0x08 }, this is hw default value. > + { WSA883X_DRE_CTL_1, 0x1e }, > { WSA883X_DRE_IDLE_DET_CTL, 0x1F }, > { WSA883X_CLSH_CTL_0, 0x37 }, > { WSA883X_CLSH_CTL_1, 0x81 },
On Thu, Jan 18, 2024 at 05:21:48PM +0000, Mark Brown wrote: > On Thu, Jan 18, 2024 at 05:58:08PM +0100, Johan Hovold wrote: > > The default PA gain is set to a pretty high level of 15 dB. Initialise > > the register to the minimum -3 dB level instead. > > > > This is specifically needed to allow machine drivers to use the lowest > > level as a volume limit. > > > @@ -722,7 +722,7 @@ static struct reg_default wsa883x_defaults[] = { > > { WSA883X_WAVG_PER_6_7, 0x88 }, > > { WSA883X_WAVG_STA, 0x00 }, > > { WSA883X_DRE_CTL_0, 0x70 }, > > - { WSA883X_DRE_CTL_1, 0x08 }, > > + { WSA883X_DRE_CTL_1, 0x1e }, > > This is broken, the register defaults provided to regmap need to > correspond to whatever the hardware default is since for example a > register cache sync will not write back any default values (as they > should already be there in the hardware). Anything like this would need > to be done by writes during init. Bah, thanks for catching that. For some reason this was enough to have the driver initialise the register at boot at least. I'll set it explicitly at probe instead. Johan
On Fri, Jan 19, 2024 at 07:15:33AM +0000, Srinivas Kandagatla wrote: > > > On 18/01/2024 16:58, Johan Hovold wrote: > > The default PA gain is set to a pretty high level of 15 dB. Initialise > > the register to the minimum -3 dB level instead. > > > > This is specifically needed to allow machine drivers to use the lowest > > level as a volume limit. > > > > Cc: stable@vger.kernel.org # 6.5 > > Signed-off-by: Johan Hovold <johan+linaro@kernel.org> > > --- > > sound/soc/codecs/wsa883x.c | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/sound/soc/codecs/wsa883x.c b/sound/soc/codecs/wsa883x.c > > index 32983ca9afba..8942c88dee09 100644 > > --- a/sound/soc/codecs/wsa883x.c > > +++ b/sound/soc/codecs/wsa883x.c > > @@ -722,7 +722,7 @@ static struct reg_default wsa883x_defaults[] = { > > { WSA883X_WAVG_PER_6_7, 0x88 }, > > { WSA883X_WAVG_STA, 0x00 }, > > { WSA883X_DRE_CTL_0, 0x70 }, > > - { WSA883X_DRE_CTL_1, 0x08 }, > > this is hw default value. Indeed. This was a last minute change when I noticed I could actually set the lowest limit in the machine driver after I offset it, but then the reset value was never updated. Didn't think this through. > > + { WSA883X_DRE_CTL_1, 0x1e }, > > { WSA883X_DRE_IDLE_DET_CTL, 0x1F }, > > { WSA883X_CLSH_CTL_0, 0x37 }, > > { WSA883X_CLSH_CTL_1, 0x81 }, Johan
diff --git a/sound/soc/codecs/wsa883x.c b/sound/soc/codecs/wsa883x.c index 32983ca9afba..8942c88dee09 100644 --- a/sound/soc/codecs/wsa883x.c +++ b/sound/soc/codecs/wsa883x.c @@ -722,7 +722,7 @@ static struct reg_default wsa883x_defaults[] = { { WSA883X_WAVG_PER_6_7, 0x88 }, { WSA883X_WAVG_STA, 0x00 }, { WSA883X_DRE_CTL_0, 0x70 }, - { WSA883X_DRE_CTL_1, 0x08 }, + { WSA883X_DRE_CTL_1, 0x1e }, { WSA883X_DRE_IDLE_DET_CTL, 0x1F }, { WSA883X_CLSH_CTL_0, 0x37 }, { WSA883X_CLSH_CTL_1, 0x81 },
The default PA gain is set to a pretty high level of 15 dB. Initialise the register to the minimum -3 dB level instead. This is specifically needed to allow machine drivers to use the lowest level as a volume limit. Cc: stable@vger.kernel.org # 6.5 Signed-off-by: Johan Hovold <johan+linaro@kernel.org> --- sound/soc/codecs/wsa883x.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)