From 89251b177b588adf5e62df42d51017d24047f44b Mon Sep 17 00:00:00 2001 From: Rodrigo Vivi Date: Fri, 10 Apr 2015 11:15:09 -0700 Subject: [PATCH] drm/i915: PSR: deprecate link_standby support for core platforms. On Haswell and Broadwell with link in standby when exit event happens between vblank and VSC packet, PSR exit on panel but DPA transmitter still sends black pixel. When this condition hits, panel will intermittently display black frame. The known W/A for this case involve the of single_frame update that isn't supported on Haswell and to be supported on Broadwell 3 other workarounds would be required. So it is better and safe to just deprecate link_standby for now. Also, link fully off saves more power than link_standby and afwk no OEM is requesting link standby on VBT. There is no reason for that. For Skylake let's just consider it behaves like Broadwell until we prove otherwise. v2: Fix commit message (Durga). v3: Fix conflict with PSR2. Reference: HSD: bdwgfx/1912559 Signed-off-by: Rodrigo Vivi Reviewed-by: Durgadoss R Signed-off-by: Rodrigo Vivi Signed-off-by: Daniel Vetter --- Reading git-format-patch failed