drm/i915: rip out intel_dp->dpms_mode

We now track the connector state in encoder->connectors_active, and
because the DP output can't be cloned, that is sufficient to track the
link state. Hence use this instead of adding yet another modeset state
variable with dubious semantics at driver load and resume time.

Also, connectors_active should only ever be set when the encoder is
linked to a crtc, hence convert that crtc test into a WARN.

v2: Rebase on top of struct intel_dp moving.

v3: The rebase accidentally killed the newly-introduced intel_dp->port
Noticed by Paulo Zanoni.

Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 2 insertions, 9 deletions

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 96fd1e7ff02e..b07d4b4fca6e 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1309,8 +1309,6 @@ static void intel_disable_dp(struct intel_encoder *encoder)
         intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON);
         ironlake_edp_panel_off(intel_dp);
         intel_dp_link_down(intel_dp);
-
-        intel_dp->dpms_mode = DRM_MODE_DPMS_OFF;
 }
 
 static void intel_enable_dp(struct intel_encoder *encoder)
@@ -1330,8 +1328,6 @@ static void intel_enable_dp(struct intel_encoder *encoder)
         } else
                 ironlake_edp_panel_vdd_off(intel_dp, false);
         ironlake_edp_backlight_on(intel_dp);
-
-        intel_dp->dpms_mode = DRM_MODE_DPMS_ON;
 }
 
 static void
@@ -1356,7 +1352,6 @@ intel_dp_dpms(struct drm_connector *connector, int mode)
 
         if (mode != DRM_MODE_DPMS_ON) {
                 intel_encoder_dpms(&intel_dp->base, mode);
-                WARN_ON(intel_dp->dpms_mode != DRM_MODE_DPMS_OFF);
 
                 if (is_cpu_edp(intel_dp))
                         ironlake_edp_pll_off(&intel_dp->base.base);
@@ -1365,7 +1360,6 @@ intel_dp_dpms(struct drm_connector *connector, int mode)
                         ironlake_edp_pll_on(&intel_dp->base.base);
 
                 intel_encoder_dpms(&intel_dp->base, mode);
-                WARN_ON(intel_dp->dpms_mode != DRM_MODE_DPMS_ON);
         }
 
         intel_connector_check_state(to_intel_connector(connector));
@@ -2069,10 +2063,10 @@ intel_dp_check_link_status(struct intel_dp *intel_dp)
         u8 sink_irq_vector;
         u8 link_status[DP_LINK_STATUS_SIZE];
 
-        if (intel_dp->dpms_mode != DRM_MODE_DPMS_ON)
+        if (!intel_dp->base.connectors_active)
                 return;
 
-        if (!intel_dp->base.base.crtc)
+        if (WARN_ON(!intel_dp->base.base.crtc))
                 return;
 
         /* Try to read receiver status if the link appears to be up */
@@ -2490,7 +2484,6 @@ intel_dp_init(struct drm_device *dev, int output_reg, enum port port)
 
         intel_dp->output_reg = output_reg;
         intel_dp->port = port;
-        intel_dp->dpms_mode = -1;
 
         intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL);
         if (!intel_connector) {