On 02/08/2016 11:56 AM, Stephen Warren wrote:
On 02/04/2016 12:17 PM, Dylan Reid wrote:
On Thu, Feb 4, 2016 at 11:05 AM, Jonathan Tinkham
<sctincman@xxxxxxxxx> wrote:
On 02/04/2016 09:36 AM, Stephen Warren wrote:
On 02/03/2016 10:30 PM, Jonathan Tinkham wrote:
The headphone jack should not be inverted
Have you tested this on Venice2 as well as Nyan? I'm pretty sure
Venice2
was tested when this driver was written, and whoever added Nyan
support to
the kernel simply assumed it would work. As such, my suspicion is
that this
series will break Venice2 even as it fixes Nyan.
I have not tested this on Venice2, only on Nyan. That seems like a
plausible
cause and reasonable suspicion.
Why doesn't user-space expect what the kernel actually implements? The
kernel should be defining the control naming.
Which user-space are you using specifically, and which part of it
expects
particular naming?
Perhaps this series needs to be parametrized based on a flag in DT,
rather
than switching the hard-coded values, so that only Venice2 can be
affected?
Specifically pulse-audio and alsa under Arch Linux.
I was referencing 'Documentation/sound/alsa/soc/dapm.txt' with
regards to
control names. While it is possible to add another entry into the
user-space
configuration, I took this documentation as a definition of kernel
control
naming schemes, and thought the driver had used a non-standard
naming scheme
(or at least, not a consistent one).
On 02/03/2016 10:31 PM, Jonathan Tinkham wrote:
Update device-tree bindings to reflect the rename of the board's
headphone jack.
This looks like an incompatible change to the DT. While you've
fixed the
DT, which will fix new installations, old DTs now won't work. This
breaks DT
ABI. Any DT change needs to be backwards compatible, i.e. the old name
should still work and be documented as a legacy value.
I see that now. If the inversion behavior differs between venice2
and nyan,
then another compatible string would need to be added anyways,
correct? As
you mentioned above, this might need to be done anyways for the rename.
Venice2 and both nyan platforms do have different polarity of HP detect.
For some boards we have an hd-invert property in DT.
Would setting hp-det-gpio to active low in the pinmux achieve the
same thing?
I don't believe we have a pinmux setting for this.
However, there's a GPIO_ACTIVE_HIGH/LOW flag that could be used in DT
property nvidia,hp-det-gpios's flags field to indicate the polarity.
That should work, but indeed you could use a separate hp-dt-invert
property if not.
Yeah, I could find other things that have an "invert" property, but none
for headphone/mic detect pins.
I'm not sure setting the GPIO_ACTIVE_HIGH/LOW flag would work. Doesn't
it depend on how the pin is physically wired?
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