From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
On GMCH plaforms we are now getting the following spew on aux
interrupts:
[drm:intel_get_hpd_pins] hotplug event received, stat 0x00000000, dig 0x00000000, pins 0x00000000
[drm:intel_get_hpd_pins] hotplug event received, stat 0x00000000, dig 0x00000000, pins 0x00000000
[drm:intel_get_hpd_pins] hotplug event received, stat 0x00000000, dig 0x00000000, pins 0x00000000
[drm:intel_get_hpd_pins] hotplug event received, stat 0x00000000, dig 0x00000000, pins 0x00000000
[drm:intel_get_hpd_pins] hotplug event received, stat 0x00000000, dig 0x00000000, pins 0x00000000
[drm:intel_dp_aux_ch] dp_aux_ch timeout status 0x71450064
Prevent it by not calling intel_get_hpd_pins() unless one of the HPD
interrupt bits are actually set.
I already fixed similar annoyance once with
4bca26d0a6518d51a9abe64fbde4b12f04c74053 drm/i915: Use HOTPLUG_INT_STATUS_G4X on VLV/CHV
but another source for it got added in
fd63e2a972c670887e5e8a08440111d3812c0996 drm/i915: combine i9xx_get_hpd_pins and pch_get_hpd_pins
due to pch_get_hpd_pins() being chosen over i9xx_get_hpd_pins() to
serve as the new unified piece of code. pch_get_hpd_pins() had the debug
print, and i9xx_get_hpd_pins() didn't.
Cc: Imre Deak <imre.deak@xxxxxxxxx>
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_irq.c | 22 ++++++++++++++--------
1 file changed, 14 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 610d301..07e539d 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -1639,20 +1639,26 @@ static void i9xx_hpd_irq_handler(struct drm_device *dev)
if (IS_G4X(dev) || IS_VALLEYVIEW(dev)) {
u32 hotplug_trigger = hotplug_status & HOTPLUG_INT_STATUS_G4X;
- intel_get_hpd_pins(&pin_mask, &long_mask, hotplug_trigger,
- hotplug_trigger, hpd_status_g4x,
- i9xx_port_hotplug_long_detect);
- intel_hpd_irq_handler(dev, pin_mask, long_mask);
+ if (hotplug_trigger) {
+ intel_get_hpd_pins(&pin_mask, &long_mask, hotplug_trigger,
+ hotplug_trigger, hpd_status_g4x,
+ i9xx_port_hotplug_long_detect);
+
+ intel_hpd_irq_handler(dev, pin_mask, long_mask);
+ }
if (hotplug_status & DP_AUX_CHANNEL_MASK_INT_STATUS_G4X)
dp_aux_irq_handler(dev);
} else {
u32 hotplug_trigger = hotplug_status & HOTPLUG_INT_STATUS_I915;
- intel_get_hpd_pins(&pin_mask, &long_mask, hotplug_trigger,
- hotplug_trigger, hpd_status_i915,
- i9xx_port_hotplug_long_detect);
- intel_hpd_irq_handler(dev, pin_mask, long_mask);
+ if (hotplug_trigger) {
+ intel_get_hpd_pins(&pin_mask, &long_mask, hotplug_trigger,
+ hotplug_trigger, hpd_status_i915,
+ i9xx_port_hotplug_long_detect);
+
+ intel_hpd_irq_handler(dev, pin_mask, long_mask);
+ }
}
}
--
2.4.6
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