diff options
| author | Jesse Barnes <jbarnes@nietzche.virtuousgeek.org> | 2008-05-12 15:47:19 -0700 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@nietzche.virtuousgeek.org> | 2008-05-12 15:47:19 -0700 |
| commit | d32ce7f621c0d8e42cdf88ce6f1d15638a3d34b7 (patch) | |
| tree | d670f833f4bcedb57815567cf0459bf553d7adf2 /shared-core | |
| parent | a51e38548cfdece2978e9b5f0d6f0467ba7a7272 (diff) | |
i915: TV hotplug fixes
In order to avoid recursive ->detect->interrupt->detect->interrupt->...
we need to disable TV hotplug interrupts in
intel_tv.c:intel_tv_detect_type. We also need to enable the TV interrupt
detection and hotplug sequence properly in i915_irq.c.
Diffstat (limited to 'shared-core')
| -rw-r--r-- | shared-core/i915_irq.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/shared-core/i915_irq.c b/shared-core/i915_irq.c index 0ee0c444..4aef568e 100644 --- a/shared-core/i915_irq.c +++ b/shared-core/i915_irq.c @@ -471,7 +471,6 @@ static void i915_hotplug_tv(struct drm_device *dev) if (iout == 0) goto unlock; - /* may need to I915_WRITE(TVDAC, 1<<31) to ack the interrupt */ status = output->funcs->detect(output); drm_hotplug_stage_two(dev, output, status == output_status_connected ? 1 : 0); @@ -631,7 +630,7 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS) struct drm_i915_master_private *master_priv; struct drm_i915_private *dev_priv = (struct drm_i915_private *) dev->dev_private; u32 iir; - u32 pipea_stats, pipeb_stats; + u32 pipea_stats = 0, pipeb_stats, tvdac; int hotplug = 0; int vblank = 0; @@ -672,10 +671,17 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS) } /* This is a global event, and not a pipe A event */ - if ((pipea_stats & I915_HOTPLUG_INTERRUPT_STATUS) || - (pipea_stats & I915_HOTPLUG_TV_INTERRUPT_STATUS)) + if (pipea_stats & I915_HOTPLUG_INTERRUPT_STATUS) hotplug = 1; + if (pipea_stats & I915_HOTPLUG_TV_INTERRUPT_STATUS) { + hotplug = 1; + /* Toggle hotplug detection to clear hotplug status */ + tvdac = I915_READ(TV_DAC); + I915_WRITE(TV_DAC, tvdac & ~TVDAC_STATE_CHG_EN); + I915_WRITE(TV_DAC, tvdac | TVDAC_STATE_CHG_EN); + } + I915_WRITE(I915REG_PIPEASTAT, pipea_stats); } @@ -1001,6 +1007,9 @@ void i915_enable_interrupt (struct drm_device *dev) I915_WRITE(SDVOB, I915_READ(SDVOB) | SDVO_INTERRUPT_ENABLE); I915_WRITE(SDVOC, I915_READ(SDVOC) | SDVO_INTERRUPT_ENABLE); + + /* TV */ + I915_WRITE(TV_DAC, I915_READ(TV_DAC) | TVDAC_STATE_CHG_EN); } else { /* DVO ???? */ } |