Re: [Intel-gfx] [PATCH v3 36/40] drm/i915: Implement gmbus burst read

2018-04-05 Thread Ramalingam C
On Thursday 05 April 2018 02:42 PM, Jani Nikula wrote: On Tue, 03 Apr 2018, Daniel Vetter wrote: On Tue, Apr 03, 2018 at 07:27:49PM +0530, Ramalingam C wrote: Implements a interface for single burst read of data that is larger than 512 Bytes through gmbus. Where does 512

Re: [Intel-gfx] [PATCH v3 36/40] drm/i915: Implement gmbus burst read

2018-04-05 Thread Jani Nikula
On Tue, 03 Apr 2018, Daniel Vetter wrote: > On Tue, Apr 03, 2018 at 07:27:49PM +0530, Ramalingam C wrote: >> Implements a interface for single burst read of data that is larger >> than 512 Bytes through gmbus. Where does 512 come from? Current code chunks at GMBUS_BYTE_COUNT_MAX

Re: [Intel-gfx] [PATCH v3 36/40] drm/i915: Implement gmbus burst read

2018-04-03 Thread Daniel Vetter
On Tue, Apr 03, 2018 at 07:27:49PM +0530, Ramalingam C wrote: > Implements a interface for single burst read of data that is larger > than 512 Bytes through gmbus. > > HDCP2.2 spec expects HDCP2.2 transmitter to read 522Bytes of HDCP > receiver certificates in single burst read. On gmbus, to read