drm/i915/crt: explicitly set up HOTPLUG_BITS on resume

... instead of relying on the register save/restore madness to do this.

To extract a bit of code call drm_mode_config_reset both on resume
and boot-up and move the hw state frobbing from the crt_init to the
->reset callback. The crt connector is the only one with a ->reset
callback, hence we can easily do this.

Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index a7837e5..2aabce7 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -547,7 +547,6 @@ static int i915_drm_thaw(struct drm_device *dev)
 
                intel_modeset_init_hw(dev);
                intel_modeset_setup_hw_state(dev);
-               drm_mode_config_reset(dev);
                drm_irq_install(dev);
        }
 

diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c
index 46c90f5..53f3e87 100644 (file)
--- a/drivers/gpu/drm/i915/intel_crt.c
+++ b/drivers/gpu/drm/i915/intel_crt.c
@@ -662,10 +662,22 @@ static int intel_crt_set_property(struct drm_connector *connector,
 static void intel_crt_reset(struct drm_connector *connector)
 {
        struct drm_device *dev = connector->dev;
+       struct drm_i915_private *dev_priv = dev->dev_private;
        struct intel_crt *crt = intel_attached_crt(connector);
 
-       if (HAS_PCH_SPLIT(dev))
+       if (HAS_PCH_SPLIT(dev)) {
+               u32 adpa;
+
+               adpa = I915_READ(PCH_ADPA);
+               adpa &= ~ADPA_CRT_HOTPLUG_MASK;
+               adpa |= ADPA_HOTPLUG_BITS;
+               I915_WRITE(PCH_ADPA, adpa);
+               POSTING_READ(PCH_ADPA);
+
+               DRM_DEBUG_KMS("pch crt adpa set to 0x%x\n", adpa);
                crt->force_hotplug_required = 1;
+       }
+
 }
 
 /*
@@ -784,18 +796,6 @@ void intel_crt_init(struct drm_device *dev)
         * Configure the automatic hotplug detection stuff
         */
        crt->force_hotplug_required = 0;
-       if (HAS_PCH_SPLIT(dev)) {
-               u32 adpa;
-
-               adpa = I915_READ(PCH_ADPA);
-               adpa &= ~ADPA_CRT_HOTPLUG_MASK;
-               adpa |= ADPA_HOTPLUG_BITS;
-               I915_WRITE(PCH_ADPA, adpa);
-               POSTING_READ(PCH_ADPA);
-
-               DRM_DEBUG_KMS("pch crt adpa set to 0x%x\n", adpa);
-               crt->force_hotplug_required = 1;
-       }
 
        dev_priv->hotplug_supported_mask |= CRT_HOTPLUG_INT_STATUS;
 }

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index f48986b..fe366a1 100644 (file)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -8598,6 +8598,8 @@ void intel_modeset_setup_hw_state(struct drm_device *dev)
        intel_modeset_update_staged_output_state(dev);
 
        intel_modeset_check_state(dev);
+
+       drm_mode_config_reset(dev);
 }
 
 void intel_modeset_gem_init(struct drm_device *dev)