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authorRodrigo Vivi <rodrigo.vivi@intel.com>2014-06-13 05:10:03 -0700
committerDaniel Vetter <daniel.vetter@ffwll.ch>2014-06-13 21:21:36 +0200
commit7c8f8a7007cf0069488e0b4e3db5f89d715f297e (patch)
tree2270ba757de4371bb52af827b2569b0c2ba5bb74 /drivers/gpu/drm/i915/intel_drv.h
parent62942ed7279d3e06dc15ae3d47665eff3b373327 (diff)
downloadlinux-stericsson-7c8f8a7007cf0069488e0b4e3db5f89d715f297e.tar.gz
drm/i915: Force PSR exit by inactivating it.
The perfect solution for psr_exit is the hardware tracking the changes and doing the psr exit by itself. This scenario works for HSW and BDW with some environments like Gnome and Wayland. However there are many other scenarios that this isn't true. Mainly one right now is KDE users on HSW and BDW with PSR on. User would miss many screen updates. For instances any key typed could be seen only when mouse cursor is moved. So this patch introduces the ability of trigger PSR exit on kernel side on some common cases that. Most of the cases are coverred by psr_exit at set_domain. The remaining cases are coverred by triggering it at set_domain, busy_ioctl, sw_finish and mark_busy. The downside here might be reducing the residency time on the cases this already work very wall like Gnome environment. But so far let's get focused on fixinge issues sio PSR couild be used for everybody and we could even get it enabled by default. Later we can add some alternatives to choose the level of PSR efficiency over boot flag of even over crtc property. v2: remove exit from connector_dpms. Daniel pointed this is the wrong way and also this isn't needed for BDW and HSW anyway. Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Vijay Purushothaman <vijay.a.purushothaman@intel.com> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_drv.h')
-rw-r--r--drivers/gpu/drm/i915/intel_drv.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 57a36aba2b2f..9aa95f01b160 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -830,6 +830,9 @@ void intel_edp_psr_enable(struct intel_dp *intel_dp);
void intel_edp_psr_disable(struct intel_dp *intel_dp);
void intel_edp_psr_update(struct drm_device *dev);
void intel_dp_set_drrs_state(struct drm_device *dev, int refresh_rate);
+void intel_edp_psr_exit(struct drm_device *dev, bool schedule_back);
+void intel_edp_psr_init(struct drm_device *dev);
+
/* intel_dsi.c */
void intel_dsi_init(struct drm_device *dev);