[PATCH v7 1/5] drm: Read DP branch device HW revision

2016-08-11 Thread Ville Syrjälä
On Thu, Aug 11, 2016 at 10:21:36AM -0700, Jim Bride wrote: > On Thu, Aug 11, 2016 at 11:22:15AM +0300, Ville Syrjälä wrote: > > On Thu, Aug 11, 2016 at 11:14:43AM +0300, Mika Kahola wrote: > > > On Thu, 2016-08-11 at 10:10 +0300, Ville Syrjälä wrote: > > > > On Mon, Aug 08, 2016 at 04:00:26PM

[PATCH v7 1/5] drm: Read DP branch device HW revision

2016-08-11 Thread Ville Syrjälä
On Thu, Aug 11, 2016 at 11:14:43AM +0300, Mika Kahola wrote: > On Thu, 2016-08-11 at 10:10 +0300, Ville Syrjälä wrote: > > On Mon, Aug 08, 2016 at 04:00:26PM +0300, Mika Kahola wrote: > > > HW revision is mandatory field for DisplayPort branch > > > devices. This is defined in DPCD register

[PATCH v7 1/5] drm: Read DP branch device HW revision

2016-08-11 Thread Mika Kahola
On Thu, 2016-08-11 at 10:10 +0300, Ville Syrjälä wrote: > On Mon, Aug 08, 2016 at 04:00:26PM +0300, Mika Kahola wrote: > > HW revision is mandatory field for DisplayPort branch > > devices. This is defined in DPCD register field 0x509. > > But what do we want to do with it? Me, I don't see a

[PATCH v7 1/5] drm: Read DP branch device HW revision

2016-08-11 Thread Jim Bride
On Thu, Aug 11, 2016 at 11:22:15AM +0300, Ville Syrjälä wrote: > On Thu, Aug 11, 2016 at 11:14:43AM +0300, Mika Kahola wrote: > > On Thu, 2016-08-11 at 10:10 +0300, Ville Syrjälä wrote: > > > On Mon, Aug 08, 2016 at 04:00:26PM +0300, Mika Kahola wrote: > > > > HW revision is mandatory field

[PATCH v7 1/5] drm: Read DP branch device HW revision

2016-08-11 Thread Ville Syrjälä
On Mon, Aug 08, 2016 at 04:00:26PM +0300, Mika Kahola wrote: > HW revision is mandatory field for DisplayPort branch > devices. This is defined in DPCD register field 0x509. But what do we want to do with it? Me, I don't see a point in parsing a bunch of stuff from the DPCD unless there's a real

[PATCH v7 1/5] drm: Read DP branch device HW revision

2016-08-08 Thread Mika Kahola
HW revision is mandatory field for DisplayPort branch devices. This is defined in DPCD register field 0x509. v2: move drm_dp_ds_revision structure to be part of drm_dp_link structure (Daniel) Signed-off-by: Mika Kahola --- drivers/gpu/drm/drm_dp_helper.c | 27 +++