forked from Minki/linux
68f357cb73
There is some conflation related to sink rates, making this change more complicated than it would otherwise have to be. There are three changes here that are rather difficult to split up: 1) Use the intel_dp->sink_rates array for all DP, not just eDP 1.4. We initialize it from DPCD on eDP 1.4 like before, but generate it based on DP_MAX_LINK_RATE on others. This reduces code complexity when we need to use the sink rates; they are all always in the sink_rates array. 2) Update the sink rate array whenever we read DPCD, and use the information from there. This increases code readability when we need the sink rates. 3) Disentangle fallback rate limiting from sink rates. In the code, the max rate is a dynamic property of the *link*, not of the *sink*. Do the limiting after intersecting the source and sink rates, which are static properties of the devices. This paves the way for follow-up refactoring that I've refrained from doing here to keep this change as simple as it possibly can. v2: introduce use_rate_select and handle non-confirming eDP (Ville) v3: don't clobber cached eDP rates on short pulse (Ville) Cc: Manasi Navare <manasi.d.navare@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Manasi Navare <manasi.d.navare@intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/071bad76467f8ab2e73f3f61ad52d5a468004c71.1490712890.git.jani.nikula@intel.com |
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