Re: [Intel-gfx] [PATCH] drm/i915: Improve DP downstream HPD handling

2017-10-27 Thread Ville Syrjälä
On Fri, Oct 27, 2017 at 12:48:39AM +, Pandiyan, Dhinakaran wrote: > > On Thu, 2017-10-26 at 22:41 +0300, Ville Syrjala wrote: > > From: Ville Syrjälä > > > > DP dongles may signal downstream HPD via short HPD pulses. Setting the > > sink to DPMS off apparently kills the downstream HPD (at le

Re: [Intel-gfx] [PATCH] drm/i915: Improve DP downstream HPD handling

2017-10-26 Thread Pandiyan, Dhinakaran
On Thu, 2017-10-26 at 22:41 +0300, Ville Syrjala wrote: > From: Ville Syrjälä > > DP dongles may signal downstream HPD via short HPD pulses. Setting the > sink to DPMS off apparently kills the downstream HPD (at least on my > DP->VGA dongle), so skip the DPMS off for such dongles when we turn >

[Intel-gfx] [PATCH] drm/i915: Improve DP downstream HPD handling

2017-10-26 Thread Ville Syrjala
From: Ville Syrjälä DP dongles may signal downstream HPD via short HPD pulses. Setting the sink to DPMS off apparently kills the downstream HPD (at least on my DP->VGA dongle), so skip the DPMS off for such dongles when we turn off the port. Cc: David Woodhouse Cc: Imre Deak Cc: Pablo Bugzill

Re: [Intel-gfx] [PATCH] drm/i915: Improve DP downstream HPD handling

2015-07-08 Thread Ville Syrjälä
On Wed, Jul 08, 2015 at 05:50:05PM +0530, Sivakumar Thulasimani wrote: > > > On 7/7/2015 5:50 PM, Sivakumar Thulasimani wrote: > > > > > > On 7/7/2015 5:24 PM, Ville Syrjälä wrote: > >> On Tue, Jul 07, 2015 at 02:37:46PM +0300, Ville Syrjälä wrote: > >>> On Tue, Jul 07, 2015 at 04:45:11PM +0530,

Re: [Intel-gfx] [PATCH] drm/i915: Improve DP downstream HPD handling

2015-07-08 Thread Sivakumar Thulasimani
On 7/7/2015 5:50 PM, Sivakumar Thulasimani wrote: On 7/7/2015 5:24 PM, Ville Syrjälä wrote: On Tue, Jul 07, 2015 at 02:37:46PM +0300, Ville Syrjälä wrote: On Tue, Jul 07, 2015 at 04:45:11PM +0530, Sivakumar Thulasimani wrote: On 7/7/2015 4:40 PM, Ville Syrjälä wrote: On Tue, Jul 07, 2015

Re: [Intel-gfx] [PATCH] drm/i915: Improve DP downstream HPD handling

2015-07-07 Thread Sivakumar Thulasimani
On 7/7/2015 5:24 PM, Ville Syrjälä wrote: On Tue, Jul 07, 2015 at 02:37:46PM +0300, Ville Syrjälä wrote: On Tue, Jul 07, 2015 at 04:45:11PM +0530, Sivakumar Thulasimani wrote: On 7/7/2015 4:40 PM, Ville Syrjälä wrote: On Tue, Jul 07, 2015 at 03:26:36PM +0530, Sivakumar Thulasimani wrote: O

Re: [Intel-gfx] [PATCH] drm/i915: Improve DP downstream HPD handling

2015-07-07 Thread Ville Syrjälä
On Tue, Jul 07, 2015 at 02:37:46PM +0300, Ville Syrjälä wrote: > On Tue, Jul 07, 2015 at 04:45:11PM +0530, Sivakumar Thulasimani wrote: > > > > > > On 7/7/2015 4:40 PM, Ville Syrjälä wrote: > > > On Tue, Jul 07, 2015 at 03:26:36PM +0530, Sivakumar Thulasimani wrote: > > >> > > >> On 7/6/2015 5:42

Re: [Intel-gfx] [PATCH] drm/i915: Improve DP downstream HPD handling

2015-07-07 Thread Ville Syrjälä
On Tue, Jul 07, 2015 at 04:45:11PM +0530, Sivakumar Thulasimani wrote: > > > On 7/7/2015 4:40 PM, Ville Syrjälä wrote: > > On Tue, Jul 07, 2015 at 03:26:36PM +0530, Sivakumar Thulasimani wrote: > >> > >> On 7/6/2015 5:42 PM, ville.syrj...@linux.intel.com wrote: > >>> From: Ville Syrjälä > >>> >

Re: [Intel-gfx] [PATCH] drm/i915: Improve DP downstream HPD handling

2015-07-07 Thread shuang . he
Tested-By: Intel Graphics QA PRTS (Patch Regression Test System Contact: shuang...@intel.com) Task id: 6728 -Summary- Platform Delta drm-intel-nightly Series Applied ILK -1

Re: [Intel-gfx] [PATCH] drm/i915: Improve DP downstream HPD handling

2015-07-07 Thread Sivakumar Thulasimani
On 7/7/2015 4:40 PM, Ville Syrjälä wrote: On Tue, Jul 07, 2015 at 03:26:36PM +0530, Sivakumar Thulasimani wrote: On 7/6/2015 5:42 PM, ville.syrj...@linux.intel.com wrote: From: Ville Syrjälä DP dongles may signal downstream HPD via short HPD pulses. If we know the device has a HPD capable

Re: [Intel-gfx] [PATCH] drm/i915: Improve DP downstream HPD handling

2015-07-07 Thread Ville Syrjälä
On Tue, Jul 07, 2015 at 03:26:36PM +0530, Sivakumar Thulasimani wrote: > > > On 7/6/2015 5:42 PM, ville.syrj...@linux.intel.com wrote: > > From: Ville Syrjälä > > > > DP dongles may signal downstream HPD via short HPD pulses. If we know > > the device has a HPD capable downstream port, make sure

Re: [Intel-gfx] [PATCH] drm/i915: Improve DP downstream HPD handling

2015-07-07 Thread Sivakumar Thulasimani
On 7/6/2015 5:42 PM, ville.syrj...@linux.intel.com wrote: From: Ville Syrjälä DP dongles may signal downstream HPD via short HPD pulses. If we know the device has a HPD capable downstream port, make sure we kick off the full hotplug processing even for short HPDs. Additonally setting the sin

[Intel-gfx] [PATCH] drm/i915: Improve DP downstream HPD handling

2015-07-06 Thread ville . syrjala
From: Ville Syrjälä DP dongles may signal downstream HPD via short HPD pulses. If we know the device has a HPD capable downstream port, make sure we kick off the full hotplug processing even for short HPDs. Additonally setting the sink to DPMS off kills the downstream HPD (at least on my DP->VGA