Use for_each_crtc_state to only touch affected crtc's.
In order to make sure that the initial power is still set
correctly we make sure modeset_update_crtc_power_domains is called
during the initial modeset.

Signed-off-by: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
---
 drivers/gpu/drm/i915/i915_drv.c      |  3 ---
 drivers/gpu/drm/i915/intel_display.c | 41 +++++++++++++++++++++++-------------
 2 files changed, 26 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index d3632c56fdf7..78ef0bb53c36 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -634,9 +634,6 @@ static int i915_drm_suspend(struct drm_device *dev)
        intel_display_suspend(dev);
        drm_modeset_unlock_all(dev);
 
-       /* suspending displays will unsets init power */
-       intel_display_set_init_power(dev_priv, true);
-
        intel_dp_mst_suspend(dev);
 
        intel_runtime_pm_disable_interrupts(dev_priv);
diff --git a/drivers/gpu/drm/i915/intel_display.c 
b/drivers/gpu/drm/i915/intel_display.c
index 8e9afc55c284..4dc07602248b 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5188,42 +5188,49 @@ static unsigned long get_crtc_power_domains(struct 
drm_crtc *crtc)
        return mask;
 }
 
-static void modeset_update_crtc_power_domains(struct drm_atomic_state *state)
+static void modeset_update_crtc_power_domains(struct drm_atomic_state *state, 
bool gr)
 {
        struct drm_device *dev = state->dev;
        struct drm_i915_private *dev_priv = dev->dev_private;
-       unsigned long pipe_domains[I915_MAX_PIPES] = { 0, };
-       struct intel_crtc *crtc;
+       unsigned long pipe_domains[I915_MAX_PIPES] = { 0, }, domains;
+       struct drm_crtc_state *crtc_state;
+       struct drm_crtc *crtc;
+       int i;
 
        /*
         * First get all needed power domains, then put all unneeded, to avoid
         * any unnecessary toggling of the power wells.
         */
-       for_each_intel_crtc(dev, crtc) {
+       for_each_crtc_in_state(state, crtc, crtc_state, i) {
                enum intel_display_power_domain domain;
+               enum pipe pipe = to_intel_crtc(crtc)->pipe;
 
-               if (!crtc->base.state->enable)
+               if (!crtc->state->active)
                        continue;
 
-               pipe_domains[crtc->pipe] = get_crtc_power_domains(&crtc->base);
+               domains = pipe_domains[pipe] = get_crtc_power_domains(crtc);
+               domains &= ~to_intel_crtc(crtc)->enabled_power_domains;
 
-               for_each_power_domain(domain, pipe_domains[crtc->pipe])
+               for_each_power_domain(domain, domains)
                        intel_display_power_get(dev_priv, domain);
        }
 
-       if (dev_priv->display.modeset_global_resources)
+       if (gr && dev_priv->display.modeset_global_resources)
                dev_priv->display.modeset_global_resources(state);
 
-       for_each_intel_crtc(dev, crtc) {
+       for_each_crtc_in_state(state, crtc, crtc_state, i) {
+               struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+               enum pipe pipe = intel_crtc->pipe;
                enum intel_display_power_domain domain;
 
-               for_each_power_domain(domain, crtc->enabled_power_domains)
-                       intel_display_power_put(dev_priv, domain);
+               domains = intel_crtc->enabled_power_domains;
+               domains &= ~pipe_domains[pipe];
 
-               crtc->enabled_power_domains = pipe_domains[crtc->pipe];
-       }
+               intel_crtc->enabled_power_domains = pipe_domains[pipe];
 
-       intel_display_set_init_power(dev_priv, false);
+               for_each_power_domain(domain, domains)
+                       intel_display_power_put(dev_priv, domain);
+       }
 }
 
 void broxton_set_cdclk(struct drm_device *dev, int frequency)
@@ -12698,7 +12705,7 @@ static int __intel_set_mode(struct drm_atomic_state 
*state)
        /* The state has been swaped above, so state actually contains the
         * old state now. */
 
-       modeset_update_crtc_power_domains(state);
+       modeset_update_crtc_power_domains(state, true);
 
        /* Now enable the clocks, plane, pipe, and connectors that we set up. */
        for_each_crtc_in_state(state, crtc, crtc_state, i) {
@@ -15280,12 +15287,16 @@ void intel_modeset_setup_hw_state(struct drm_device 
*dev,
                ret = intel_set_mode(state);
                if (ret) {
                        DRM_ERROR("Failed to restore previous mode\n");
+                       modeset_update_crtc_power_domains(state, false);
                        drm_atomic_state_free(state);
                }
        } else {
+               modeset_update_crtc_power_domains(state, false);
                drm_atomic_state_free(state);
        }
 
+       intel_display_set_init_power(dev_priv, false);
+
        intel_modeset_check_state(dev);
 }
 
-- 
2.1.0

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