drm/i915: Use crtc_state->active instead of crtc_state->enable

crtc_state->enable means a crtc is configured, but it may be turned
off for dpms. Until the commit "use intel_crtc_control everywhere"
crtc_state->active was not updated on crtc off, but now
crtc_state->active should be used for tracking whether a crtc is
scanning out or not.

A few commits from now dpms will be handled by calling
intel_set_mode with a different value for crtc_state->active,
which causes a crtc to turn on or off.

At this point crtc->active should mirror crtc_state->active,
so some paranoia from the crtc_disable functions can be removed.

intel_set_mode_setup_plls still checks for ->enable, because all
resources that are needed have to be calculated, else
dpms changes may not succeed.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

1 files changed, 22 insertions, 22 deletions

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index eb40f9fc9b44..4648fa5ab55a 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4629,7 +4629,7 @@ static void intel_crtc_load_lut(struct drm_crtc *crtc)
         bool reenable_ips = false;
 
         /* The clocks have to be on to load the palette. */
-        if (!crtc->state->enable || !intel_crtc->active)
+        if (!crtc->state->active)
                 return;
 
         if (HAS_GMCH_DISPLAY(dev_priv->dev)) {
@@ -4845,9 +4845,7 @@ static void ironlake_crtc_enable(struct drm_crtc *crtc)
         struct intel_encoder *encoder;
         int pipe = intel_crtc->pipe;
 
-        WARN_ON(!crtc->state->enable);
-
-        if (intel_crtc->active)
+        if (WARN_ON(intel_crtc->active))
                 return;
 
         if (intel_crtc->config->has_pch_encoder)
@@ -4951,9 +4949,7 @@ static void haswell_crtc_enable(struct drm_crtc *crtc)
         struct intel_encoder *encoder;
         int pipe = intel_crtc->pipe;
 
-        WARN_ON(!crtc->state->enable);
-
-        if (intel_crtc->active)
+        if (WARN_ON(intel_crtc->active))
                 return;
 
         if (intel_crtc_to_shared_dpll(intel_crtc))
@@ -5055,7 +5051,7 @@ static void ironlake_crtc_disable(struct drm_crtc *crtc)
         int pipe = intel_crtc->pipe;
         u32 reg, temp;
 
-        if (!intel_crtc->active)
+        if (WARN_ON(!intel_crtc->active))
                 return;
 
         for_each_encoder_on_crtc(dev, crtc, encoder)
@@ -5118,7 +5114,7 @@ static void haswell_crtc_disable(struct drm_crtc *crtc)
         struct intel_encoder *encoder;
         enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
 
-        if (!intel_crtc->active)
+        if (WARN_ON(!intel_crtc->active))
                 return;
 
         for_each_encoder_on_crtc(dev, crtc, encoder) {
@@ -5978,7 +5974,7 @@ static int valleyview_modeset_global_pipes(struct drm_atomic_state *state)
 
         /* add all active pipes to the state */
         for_each_crtc(state->dev, crtc) {
-                if (!crtc->state->enable)
+                if (!crtc->state->active)
                         continue;
 
                 crtc_state = drm_atomic_get_crtc_state(state, crtc);
@@ -5988,7 +5984,7 @@ static int valleyview_modeset_global_pipes(struct drm_atomic_state *state)
 
         /* disable/enable all currently active pipes while we change cdclk */
         for_each_crtc_in_state(state, crtc, crtc_state, i)
-                if (crtc_state->enable)
+                if (crtc_state->active)
                         crtc_state->mode_changed = true;
 
         return 0;
@@ -6076,9 +6072,7 @@ static void valleyview_crtc_enable(struct drm_crtc *crtc)
         int pipe = intel_crtc->pipe;
         bool is_dsi;
 
-        WARN_ON(!crtc->state->enable);
-
-        if (intel_crtc->active)
+        if (WARN_ON(intel_crtc->active))
                 return;
 
         is_dsi = intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DSI);
@@ -6154,9 +6148,7 @@ static void i9xx_crtc_enable(struct drm_crtc *crtc)
         struct intel_encoder *encoder;
         int pipe = intel_crtc->pipe;
 
-        WARN_ON(!crtc->state->enable);
-
-        if (intel_crtc->active)
+        if (WARN_ON(intel_crtc->active))
                 return;
 
         i9xx_set_pll_dividers(intel_crtc);
@@ -6216,7 +6208,7 @@ static void i9xx_crtc_disable(struct drm_crtc *crtc)
         struct intel_encoder *encoder;
         int pipe = intel_crtc->pipe;
 
-        if (!intel_crtc->active)
+        if (WARN_ON(!intel_crtc->active))
                 return;
 
         /*
@@ -12264,7 +12256,7 @@ intel_modeset_update_state(struct drm_atomic_state *state)
                 if (!crtc_state || !needs_modeset(crtc->state))
                         continue;
 
-                if (crtc->state->enable) {
+                if (crtc->state->active) {
                         struct drm_property *dpms_property =
                                 dev->mode_config.dpms_property;
 
@@ -12679,6 +12671,10 @@ check_crtc_state(struct drm_device *dev)
                      "crtc active state doesn't match with hw state "
                      "(expected %i, found %i)\n", crtc->active, active);
 
+                I915_STATE_WARN(crtc->active != crtc->base.state->active,
+                     "transitional active state does not match atomic hw state "
+                     "(expected %i, found %i)\n", crtc->base.state->active, crtc->active);
+
                 if (active &&
                     !intel_pipe_config_compare(dev, crtc->config, &pipe_config)) {
                         I915_STATE_WARN(1, "pipe state doesn't match!\n");
@@ -12820,6 +12816,10 @@ intel_modeset_compute_config(struct drm_crtc *crtc,
         if (IS_ERR(pipe_config))
                 return pipe_config;
 
+        if (!pipe_config->base.enable &&
+            WARN_ON(pipe_config->base.active))
+                pipe_config->base.active = false;
+
         if (!pipe_config->base.enable)
                 return pipe_config;
 
@@ -12932,7 +12932,7 @@ static int __intel_set_mode(struct drm_atomic_state *state)
                 return ret;
 
         for_each_crtc_in_state(state, crtc, crtc_state, i) {
-                if (!needs_modeset(crtc_state))
+                if (!needs_modeset(crtc_state) || !crtc->state->active)
                         continue;
 
                 intel_crtc_disable_planes(crtc);
@@ -12954,7 +12954,7 @@ static int __intel_set_mode(struct drm_atomic_state *state)
 
         /* Now enable the clocks, plane, pipe, and connectors that we set up. */
         for_each_crtc_in_state(state, crtc, crtc_state, i) {
-                if (!needs_modeset(crtc->state) || !crtc->state->enable)
+                if (!needs_modeset(crtc->state) || !crtc->state->active)
                         continue;
 
                 update_scanline_offset(to_intel_crtc(crtc));
@@ -15215,7 +15215,7 @@ static void intel_sanitize_crtc(struct intel_crtc *crtc)
          * have active connectors/encoders. */
         intel_crtc_update_dpms(&crtc->base);
 
-        if (crtc->active != crtc->base.state->enable) {
+        if (crtc->active != crtc->base.state->active) {
                 struct intel_encoder *encoder;
 
                 /* This can happen either due to bugs in the get_hw_state