4.19-stable review patch. If anyone has any objections, please let me know.
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From: Ville Syrjälä ville.syrjala@linux.intel.com
commit 7cada4d0b7a0fb813dbc9777fec092e9ed0546e9 upstream.
Plane sanitation needs vblank interrupts (on account of CxSR disable). So let's restore vblank interrupts earlier.
v2: Make it actually build v3: Add comment to explain why we need this (Daniel)
Cc: stable@vger.kernel.org Cc: Dennis dennis.nezic@utoronto.ca Tested-by: Dennis dennis.nezic@utoronto.ca Tested-by: Peter Nowee peter.nowee@gmail.com Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105637 Fixes: b1e01595a66d ("drm/i915: Redo plane sanitation during readout") Signed-off-by: Ville Syrjälä ville.syrjala@linux.intel.com Reviewed-by: Daniel Vetter daniel.vetter@ffwll.ch Link: https://patchwork.freedesktop.org/patch/msgid/20181003144951.4397-1-ville.sy... (cherry picked from commit 68bc30deac625b8be8d3950b30dc93d09a3645f5) Signed-off-by: Rodrigo Vivi rodrigo.vivi@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/gpu/drm/i915/intel_display.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-)
--- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -15446,13 +15446,9 @@ static void intel_sanitize_crtc(struct i I915_READ(reg) & ~PIPECONF_FRAME_START_DELAY_MASK); }
- /* restore vblank interrupts to correct state */ - drm_crtc_vblank_reset(&crtc->base); if (crtc->active) { struct intel_plane *plane;
- drm_crtc_vblank_on(&crtc->base); - /* Disable everything but the primary plane */ for_each_intel_plane_on_crtc(dev, crtc, plane) { const struct intel_plane_state *plane_state = @@ -15803,7 +15799,6 @@ intel_modeset_setup_hw_state(struct drm_ struct drm_modeset_acquire_ctx *ctx) { struct drm_i915_private *dev_priv = to_i915(dev); - enum pipe pipe; struct intel_crtc *crtc; struct intel_encoder *encoder; int i; @@ -15814,15 +15809,23 @@ intel_modeset_setup_hw_state(struct drm_ /* HW state is read out, now we need to sanitize this mess. */ get_encoder_power_domains(dev_priv);
- intel_sanitize_plane_mapping(dev_priv); + /* + * intel_sanitize_plane_mapping() may need to do vblank + * waits, so we need vblank interrupts restored beforehand. + */ + for_each_intel_crtc(&dev_priv->drm, crtc) { + drm_crtc_vblank_reset(&crtc->base);
- for_each_intel_encoder(dev, encoder) { - intel_sanitize_encoder(encoder); + if (crtc->active) + drm_crtc_vblank_on(&crtc->base); }
- for_each_pipe(dev_priv, pipe) { - crtc = intel_get_crtc_for_pipe(dev_priv, pipe); + intel_sanitize_plane_mapping(dev_priv);
+ for_each_intel_encoder(dev, encoder) + intel_sanitize_encoder(encoder); + + for_each_intel_crtc(&dev_priv->drm, crtc) { intel_sanitize_crtc(crtc, ctx); intel_dump_pipe_config(crtc, crtc->config, "[setup_hw_state]");