drm/i915/dsc: add basic hardware state readout support

Browse source

Add basic hardware state readout for DSC, and check the most relevant
details in the state checker.

v2:
- check for DSC power before reading its state
- check if source supports DSC at all

As a side effect, this should also get the power domains for the enabled
DSC on takeover, and subsequently disable DSC if it's not needed.

Cc: Manasi Navare <manasi.d.navare@intel.com>
Cc: Vandita Kulkarni <vandita.kulkarni@intel.com>
Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/3fb018cf9bd9a4c275aab389b6ec0f2a4e938bb9.1575974743.git.jani.nikula@intel.com

...

This commit is contained in:

Jani Nikula 2019-12-10 12:50:52 +02:00

parent deaaff4919

commit fbacb15ea8

4 changed files with 57 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

2

drivers/gpu/drm/i915/display/intel_ddi.c

View file

4

drivers/gpu/drm/i915/display/intel_display.c

View file

49

drivers/gpu/drm/i915/display/intel_vdsc.c

View file

2

drivers/gpu/drm/i915/display/intel_vdsc.h

View file