Gets the detect code (which may take awhile) out of the resume path,
speeding things up a bit.
v2: use a delayed work queue instead (Daniel)
Signed-off-by: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_dma.c | 10 ++++++++++
drivers/gpu/drm/i915/i915_drv.c | 8 ++++++--
drivers/gpu/drm/i915/i915_drv.h | 1 +
3 files changed, 17 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 85d14e1..633095d 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1303,6 +1303,15 @@ static const struct vga_switcheroo_client_ops i915_switcheroo_ops = {
.can_switch = i915_switcheroo_can_switch,
};
+static void intel_resume_hotplug(struct work_struct *work)
+{
+ struct drm_i915_private *dev_priv =
+ container_of(work, struct drm_i915_private,
+ hotplug_resume_work.work);
+
+ drm_helper_hpd_irq_event(dev_priv->dev);
+}
+
static int i915_load_modeset_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
@@ -1364,6 +1373,7 @@ static int i915_load_modeset_init(struct drm_device *dev)
/* Only enable hotplug handling once the fbdev is fully set up. */
intel_hpd_init(dev_priv);
+ INIT_DELAYED_WORK(&dev_priv->hotplug_resume_work, intel_resume_hotplug);
/*
* Some ports require correctly set-up hpd registers for detection to
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index a05a1d0..83075f9 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -726,8 +726,12 @@ static int __i915_drm_thaw(struct drm_device *dev, bool restore_gtt_mappings)
* notifications.
* */
intel_hpd_init(dev_priv);
- /* Config may have changed between suspend and resume */
- drm_helper_hpd_irq_event(dev);
+ /* Config may have changed between suspend and resume. Just
+ * try to make sure the rest of driver resume is finished
+ * before we start probing for config changes.
+ */
+ schedule_delayed_work(&dev_priv->hotplug_resume_work,
+ msecs_to_jiffies(50));
}
intel_opregion_init(dev);
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 1e476b5..6273ad6 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1521,6 +1521,7 @@ struct drm_i915_private {
} hpd_stats[HPD_NUM_PINS];
u32 hpd_event_bits;
struct delayed_work hotplug_reenable_work;
+ struct delayed_work hotplug_resume_work;
struct i915_fbc fbc;
struct i915_drrs drrs;
--
1.9.1
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