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drm/i915: Restore vblank interrupts earlier

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commit 7cada4d0b7 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: b1e01595a6 ("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.syrjala@linux.intel.com
(cherry picked from commit 68bc30deac)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ville Syrjälä 2018-10-03 17:49:51 +03:00 committed by Greg Kroah-Hartman
parent b1fd8f5996
commit b24df93f18
1 changed files with 13 additions and 10 deletions
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23
drivers/gpu/drm/i915/intel_display.c
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@ -14829,13 +14829,9 @@ static void intel_sanitize_crtc(struct intel_crtc *crtc,
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 =
@ -15148,7 +15144,6 @@ intel_modeset_setup_hw_state(struct drm_device *dev,
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;
@ -15167,15 +15162,23 @@ intel_modeset_setup_hw_state(struct drm_device *dev,
/* 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]");