Hi all,
The main goal is to have the SLES12 SP3 kernel version 4.4.140-94.42.1 the fix
it needed for Kabylake graphics issue and also enable the dp aux character
device CONFIG_DRM_DP_AUX_CHARDEV=y.
I like to inquiry if there's a way or how to proceed with this correctly.
My question is I have a I
Hi Jani,
The end goal was already achieve by the advice you gave the
DRM_DP_AUX_CHARDEV.I just like to extend my knowledge into DRM such as a
scenario having a kernel version that doesn't have the DRM_DP_AUX_CHARDEV yet.
Would it possible to implement specific DRM_DP_AUX_CHARDEV to it.
Thanks,J
On Wed, 13 Jun 2018, John Sledge wrote:
> I like to understand how the DRM_DP_AUX_CHARDEV=y kick off.
Try 'git grep DRM_DP_AUX_CHARDEV' in your kernel git repo, and see how
it affects conditional compilation.
This list isn't kernel development 101.
You still didn't say what your end goal is. Fo
Hi Jani,
I like to understand how the DRM_DP_AUX_CHARDEV=y kick off.
Regards,John
On Monday, June 11, 2018, 7:36:51 PM GMT+8, Jani Nikula
wrote:
On Mon, 11 Jun 2018, John Sledge wrote:
> Thanks for the help. I was able to manage your advice on the
> drm_dp_aux_chardev. Though I still
On Mon, 11 Jun 2018, John Sledge wrote:
> Thanks for the help. I was able to manage your advice on the
> drm_dp_aux_chardev. Though I still need to learn more about the DRM vs
> kernel process flow. Like for example, upon changing/adding
> DRM_DP_AUX_CHARDEV in kernel .config, How did DRM_DP_AUX_C
Hi Jani,
Thanks for the help. I was able to manage your advice on the
drm_dp_aux_chardev. Though I still need to learn more about the DRM vs kernel
process flow. Like for example, upon changing/adding DRM_DP_AUX_CHARDEV in
kernel .config, How did DRM_DP_AUX_CHARDEV was being invoke here? From t
On Fri, 25 May 2018, "Taylor, Clinton A" wrote:
> Looks like the seek=%d in the sprintf is not working.
Yeah. Try skip=%d instead.
BR,
Jani.
--
Jani Nikula, Intel Open Source Graphics Center
___
dri-devel mailing list
dri-devel@lists.freedesktop.org
: Friday, May 25, 2018 1:11 AM
To: dri-devel@lists.freedesktop.org; Jani Nikula
Cc: intel-...@lists.freedesktop.org
Subject: Re: [Intel-gfx] DRM Inquiry
Hi Jani,
I seek 0-800 and here's what I get, all 11 0A in hex. Not sure if this is the
brightness value of the display. I also did a test, w
On Fri, 25 May 2018, John Sledge wrote:
> Hi Jani,
> I seek 0-800 and here's what I get, all 11 0A in hex. Not sure if this is the
> brightness value of the display. I also did a test, when I disconnect the DP
> to the display and execute the dd commands, it would say error reading
> 'dev/drm_
Hi Jani,
I seek 0-800 and here's what I get, all 11 0A in hex. Not sure if this is the
brightness value of the display. I also did a test, when I disconnect the DP to
the display and execute the dd commands, it would say error reading
'dev/drm_dp_aux1': Connection timed out. So I think my displ
On Fri, 25 May 2018, John Sledge wrote:
> Hi Jani,
> I can now see /dev/drm_dp_aux*.
> I'm not familiar with dd command.Correct me if I'm wrong.
> Possible commands i tried and nothing happen:dd if=/dev/drm_dp_aux1 seek=723
> ibs=2dd of=/dev/drm_dp_aux1 seek=723 ibs=2
> dd if=/dev/drm_dp_aux2 se
Hi Jani,
I can now see /dev/drm_dp_aux*.
I'm not familiar with dd command.Correct me if I'm wrong.
Possible commands i tried and nothing happen:dd if=/dev/drm_dp_aux1 seek=723
ibs=2dd of=/dev/drm_dp_aux1 seek=723 ibs=2
dd if=/dev/drm_dp_aux2 seek=723 ibs=2dd of=/dev/drm_dp_aux2 seek=723 ibs=2
I a
On Thu, 24 May 2018, John Sledge wrote:
> I was able to update my kernel to 4.6 which has the DRM_DP_AUX_CHARDEV
> in the Kconfig file linux-4.6\drivers\gpu\drm. Though I also
> add DRM_DP_AUX_CHARDEV=y in kernel config. When invoke uname -r, I
> could see that the kernel is now 4.6.
If you're u
Hi Jani,
I was able to update my kernel to 4.6 which has the DRM_DP_AUX_CHARDEV in the
Kconfig file linux-4.6\drivers\gpu\drm. Though I also add DRM_DP_AUX_CHARDEV=y
in kernel config. When invoke uname -r, I could see that the kernel is now 4.6.
How can I verify the DRM_DP_AUX_CHARDEV takes eff
Hi Jani,
Good day!
Thank you for taking the time to point out those information. It’s a great help
to me.
Also apologies for the late reply, your first reply went to my spam inbox, not
sure what happen and I was waiting for replies for days.
I'm still new to Linux and to DRM. I also need to inve
On Wed, 23 May 2018, John Sledge wrote:
> Do you have any suggestions or advice how to use the kernel driver in
> DRM in regards to how to implement the method drm_dp_dpcd_readb for
> example?
Sincerely, my suggestion is to respond and be active when people take
the time to look into your problem
Hi ,
I’ve been doing some PTN3460 programming under Linux and I have some questions
regarding on setting the brightness level via DisplayPort Native Aux.
The display device with PTN3460 is connected in DP (display port) to my
computer. I’m currently looking into the DRM (Direct Rendering Manager
On Thu, 17 May 2018, John Sledge wrote:
> I’ve been doing some PTN3460 programming under Linux using C/C++ and I
> have some questions regarding on setting the brightness level to my
> display device.
>
> The display device with PTN3460 is connected in DP (display port) to
> my computer. Only need
Hi All,
Good day!
I’ve been doing some PTN3460 programming under Linux using C/C++ and I have
some questions regarding on setting the brightness level to my display device.
The display device with PTN3460 is connected in DP (display port) to my
computer. Only needs a DisplayPort native AUX comman
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