Re: [Intel-gfx] [PATCH 1/5] drm/i915: add and enable DP AUX CH mutex

2018-02-14 Thread Jani Nikula
On Wed, 14 Feb 2018, Rodrigo Vivi wrote: > On Wed, Feb 14, 2018 at 09:47:00AM +, Jani Nikula wrote: >> On Tue, 13 Feb 2018, José Roberto de Souza wrote: >> > When PSR/PSR2 is enabled hardware can do AUX transactions by it self, so >> > lets use the mutex register that is available in gen9+ to

Re: [Intel-gfx] [PATCH 1/5] drm/i915: add and enable DP AUX CH mutex

2018-02-14 Thread Rodrigo Vivi
On Wed, Feb 14, 2018 at 09:47:00AM +, Jani Nikula wrote: > On Tue, 13 Feb 2018, José Roberto de Souza wrote: > > When PSR/PSR2 is enabled hardware can do AUX transactions by it self, so > > lets use the mutex register that is available in gen9+ to avoid concurrent > > access by hardware and dr

Re: [Intel-gfx] [PATCH 1/5] drm/i915: add and enable DP AUX CH mutex

2018-02-14 Thread Ville Syrjälä
On Tue, Feb 13, 2018 at 05:30:29PM -0800, Rodrigo Vivi wrote: > José Roberto de Souza writes: > > > When PSR/PSR2 is enabled hardware can do AUX transactions by it self, so > > lets use the mutex register that is available in gen9+ to avoid concurrent > > access by hardware and driver. > > > > Re

Re: [Intel-gfx] [PATCH 1/5] drm/i915: add and enable DP AUX CH mutex

2018-02-14 Thread Jani Nikula
On Tue, 13 Feb 2018, José Roberto de Souza wrote: > When PSR/PSR2 is enabled hardware can do AUX transactions by it self, so > lets use the mutex register that is available in gen9+ to avoid concurrent > access by hardware and driver. > > Reference: > https://01.org/sites/default/files/documentat

Re: [Intel-gfx] [PATCH 1/5] drm/i915: add and enable DP AUX CH mutex

2018-02-13 Thread Jani Nikula
On Tue, 13 Feb 2018, José Roberto de Souza wrote: > When PSR/PSR2 is enabled hardware can do AUX transactions by it self, so > lets use the mutex register that is available in gen9+ to avoid concurrent > access by hardware and driver. > > Reference: > https://01.org/sites/default/files/documentat

Re: [Intel-gfx] [PATCH 1/5] drm/i915: add and enable DP AUX CH mutex

2018-02-13 Thread Souza, Jose
On Tue, 2018-02-13 at 17:30 -0800, Rodrigo Vivi wrote: > José Roberto de Souza writes: > > > When PSR/PSR2 is enabled hardware can do AUX transactions by it > > self, so > > lets use the mutex register that is available in gen9+ to avoid > > concurrent > > access by hardware and driver. > > > >

Re: [Intel-gfx] [PATCH 1/5] drm/i915: add and enable DP AUX CH mutex

2018-02-13 Thread Rodrigo Vivi
José Roberto de Souza writes: > When PSR/PSR2 is enabled hardware can do AUX transactions by it self, so > lets use the mutex register that is available in gen9+ to avoid concurrent > access by hardware and driver. > > Reference: > https://01.org/sites/default/files/documentation/intel-gfx-prm-o

[Intel-gfx] [PATCH 1/5] drm/i915: add and enable DP AUX CH mutex

2018-02-13 Thread José Roberto de Souza
When PSR/PSR2 is enabled hardware can do AUX transactions by it self, so lets use the mutex register that is available in gen9+ to avoid concurrent access by hardware and driver. Reference: https://01.org/sites/default/files/documentation/intel-gfx-prm-osrc-skl-vol12-display.pdf Page 198 - AUX pr