Re: [Intel-gfx] [PATCH 3/3] drm/i915: Support DDI lane reversal for DP

2015-08-26 Thread Sivakumar Thulasimani
On 8/26/2015 7:59 PM, Benjamin Tissoires wrote: On Aug 26 2015 or thereabouts, Sivakumar Thulasimani wrote: On 8/18/2015 1:36 AM, Benjamin Tissoires wrote: On Aug 14 2015 or thereabouts, Stéphane Marchesin wrote: On Wed, Aug 5, 2015 at 12:34 PM, Benjamin Tissoires wrote: On Jul 30 2015 or

Re: [Intel-gfx] [PATCH 3/3] drm/i915: Support DDI lane reversal for DP

2015-08-26 Thread Benjamin Tissoires
On Aug 26 2015 or thereabouts, Sivakumar Thulasimani wrote: > > > On 8/18/2015 1:36 AM, Benjamin Tissoires wrote: > >On Aug 14 2015 or thereabouts, Stéphane Marchesin wrote: > >>On Wed, Aug 5, 2015 at 12:34 PM, Benjamin Tissoires > >> wrote: > >>>On Jul 30 2015 or thereabouts, Sivakumar Thulasima

Re: [Intel-gfx] [PATCH 3/3] drm/i915: Support DDI lane reversal for DP

2015-08-26 Thread Sivakumar Thulasimani
On 8/18/2015 1:36 AM, Benjamin Tissoires wrote: On Aug 14 2015 or thereabouts, Stéphane Marchesin wrote: On Wed, Aug 5, 2015 at 12:34 PM, Benjamin Tissoires wrote: On Jul 30 2015 or thereabouts, Sivakumar Thulasimani wrote: On 7/29/2015 8:52 PM, Benjamin Tissoires wrote: On Jul 29 2015 or

Re: [Intel-gfx] [PATCH 3/3] drm/i915: Support DDI lane reversal for DP

2015-08-17 Thread Benjamin Tissoires
On Aug 14 2015 or thereabouts, Stéphane Marchesin wrote: > On Wed, Aug 5, 2015 at 12:34 PM, Benjamin Tissoires > wrote: > > On Jul 30 2015 or thereabouts, Sivakumar Thulasimani wrote: > >> > >> > >> On 7/29/2015 8:52 PM, Benjamin Tissoires wrote: > >> >On Jul 29 2015 or thereabouts, Sivakumar Thul

Re: [Intel-gfx] [PATCH 3/3] drm/i915: Support DDI lane reversal for DP

2015-08-14 Thread Stéphane Marchesin
On Wed, Aug 5, 2015 at 12:34 PM, Benjamin Tissoires wrote: > On Jul 30 2015 or thereabouts, Sivakumar Thulasimani wrote: >> >> >> On 7/29/2015 8:52 PM, Benjamin Tissoires wrote: >> >On Jul 29 2015 or thereabouts, Sivakumar Thulasimani wrote: >> >>why not detect reverse in intel_dp_detect/intel_hpd

Re: [Intel-gfx] [PATCH 3/3] drm/i915: Support DDI lane reversal for DP

2015-08-06 Thread Sivakumar Thulasimani
On 8/6/2015 1:04 AM, Benjamin Tissoires wrote: On Jul 30 2015 or thereabouts, Sivakumar Thulasimani wrote: On 7/29/2015 8:52 PM, Benjamin Tissoires wrote: On Jul 29 2015 or thereabouts, Sivakumar Thulasimani wrote: why not detect reverse in intel_dp_detect/intel_hpd_pulse ? that way you can

Re: [Intel-gfx] [PATCH 3/3] drm/i915: Support DDI lane reversal for DP

2015-08-05 Thread Benjamin Tissoires
On Jul 30 2015 or thereabouts, Sivakumar Thulasimani wrote: > > > On 7/29/2015 8:52 PM, Benjamin Tissoires wrote: > >On Jul 29 2015 or thereabouts, Sivakumar Thulasimani wrote: > >>why not detect reverse in intel_dp_detect/intel_hpd_pulse ? that way you can > >>identify both lane count and revers

Re: [Intel-gfx] [PATCH 3/3] drm/i915: Support DDI lane reversal for DP

2015-07-30 Thread Benjamin Tissoires
On Jul 30 2015 or thereabouts, Sivakumar Thulasimani wrote: > > > On 7/29/2015 8:52 PM, Benjamin Tissoires wrote: > >On Jul 29 2015 or thereabouts, Sivakumar Thulasimani wrote: > >>why not detect reverse in intel_dp_detect/intel_hpd_pulse ? that way you can > >>identify both lane count and revers

Re: [Intel-gfx] [PATCH 3/3] drm/i915: Support DDI lane reversal for DP

2015-07-29 Thread Sivakumar Thulasimani
On 7/29/2015 8:52 PM, Benjamin Tissoires wrote: On Jul 29 2015 or thereabouts, Sivakumar Thulasimani wrote: why not detect reverse in intel_dp_detect/intel_hpd_pulse ? that way you can identify both lane count and reversal state without touching anything in the link training code. i am yet to

Re: [Intel-gfx] [PATCH 3/3] drm/i915: Support DDI lane reversal for DP

2015-07-29 Thread Benjamin Tissoires
On Jul 29 2015 or thereabouts, Sivakumar Thulasimani wrote: > why not detect reverse in intel_dp_detect/intel_hpd_pulse ? that way you can > identify both lane count and reversal state without touching anything in the > link training code. i am yet to upstream my changes for CHT that i can share >

Re: [Intel-gfx] [PATCH 3/3] drm/i915: Support DDI lane reversal for DP

2015-07-29 Thread Sivakumar Thulasimani
why not detect reverse in intel_dp_detect/intel_hpd_pulse ? that way you can identify both lane count and reversal state without touching anything in the link training code. i am yet to upstream my changes for CHT that i can share if required that does the same in intel_dp_detect without touchi

[Intel-gfx] [PATCH 3/3] drm/i915: Support DDI lane reversal for DP

2015-07-28 Thread Benjamin Tissoires
The DP outputs connected through a USB Type-C port can have inverted lanes. To detect that case, we implement autodetection by training only the first lane if it doesn't work, we assume that we need to invert the lanes. Tested on a Chromebook Pixel 2015 (samus) with a USB Type-C to HDMI adapter an