drm/fbdev: rework output polling to be back in the core. (v4)

After thinking it over a lot it made more sense for the core to deal with
the output polling especially so it can notify X.

v2: drop plans for fake connector - per Michel's comments - fix X patch sent to xorg-devel, add intel polled/hpd setting, add initial nouveau polled/hpd settings.

v3: add config lock take inside polling, add intel/nouveau poll init/fini calls

v4: config lock was a bit agressive, only needed around connector list reading.
otherwise it could re-enter.

glisse: discard drm_helper_hpd_irq_event

v3: Reviewed-by: Michel Dänzer <michel@daenzer.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 7 insertions, 7 deletions

diff --git a/drivers/gpu/drm/i915/intel_fb.c b/drivers/gpu/drm/i915/intel_fb.c
index 7f1eabbaa2bb..6f53cf7fbc50 100644
--- a/drivers/gpu/drm/i915/intel_fb.c
+++ b/drivers/gpu/drm/i915/intel_fb.c
@@ -207,12 +207,6 @@ static int intel_fb_find_or_create_single(struct drm_fb_helper *helper,
         return new_fb;
 }
 
-void intelfb_hotplug(struct drm_device *dev, bool polled)
-{
-        drm_i915_private_t *dev_priv = dev->dev_private;
-        drm_helper_fb_hpd_irq_event(&dev_priv->fbdev->helper);
-}
-
 static struct drm_fb_helper_funcs intel_fb_helper_funcs = {
         .gamma_set = intel_crtc_fb_gamma_set,
         .gamma_get = intel_crtc_fb_gamma_get,
@@ -256,7 +250,7 @@ int intel_fbdev_init(struct drm_device *dev)
         ifbdev->helper.funcs = &intel_fb_helper_funcs;
 
         drm_fb_helper_init(dev, &ifbdev->helper, 2,
-                           INTELFB_CONN_LIMIT, false);
+                           INTELFB_CONN_LIMIT);
 
         drm_fb_helper_single_add_all_connectors(&ifbdev->helper);
         drm_fb_helper_initial_config(&ifbdev->helper, 32);
@@ -274,3 +268,9 @@ void intel_fbdev_fini(struct drm_device *dev)
         dev_priv->fbdev = NULL;
 }
 MODULE_LICENSE("GPL and additional rights");
+
+void intel_fb_output_poll_changed(struct drm_device *dev)
+{
+        drm_i915_private_t *dev_priv = dev->dev_private;
+        drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper);
+}