From: Pradeep Bhat Date: Sat, 5 Apr 2014 06:43:28 +0000 (+0530) Subject: drm/i915: Add support for DRRS to switch RR X-Git-Tag: omap-for-v3.16/fixes-against-rc1~44^2~63^2~8 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=439d7ac0879f9fd4c56f212e03477f358133c56c;p=pandora-kernel.git drm/i915: Add support for DRRS to switch RR This patch computes and stored 2nd M/N/TU for switching to different refresh rate dynamically. PIPECONF_EDP_RR_MODE_SWITCH bit helps toggle between alternate refresh rates programmed in 2nd M/N/TU registers. v2: Daniel's review comments Computing M2/N2 in compute_config and storing it in crtc_config v3: Modified reference to edp_downclock and edp_downclock_avail based on the changes made to move them from dev_private to intel_panel. v4: Modified references to is_drrs_supported based on the changes made to rename it to drrs_support. v5: Jani's review comments Removed superfluous return statements. Changed support for Gen 7 and above. Corrected indentation. Re-structured the code which finds crtc and connector from encoder. Changed some logs to be less verbose. v6: Modifying i915_drrs to include only intel connector as intel_dp can be derived from intel connector when required. v7: As per internal review comments, acquiring mutex just before accessing drrs RR. As per Chris's review comments, added documentation about the use of locking in the function. v8: Incorporated Jani's review comments. Removed reference to edp_downclock. v9: Jani's review comments. Modified comment in set_drrs. Changed index to type edp_drrs_refresh_rate_type. Check if PSR is enabled before setting registers fo DRRS. Signed-off-by: Pradeep Bhat Signed-off-by: Vandana Kannan Cc: Jani Nikula Signed-off-by: Daniel Vetter --- Reading git-diff-tree failed