diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index a7174ac7c5e6b409d4ea555b6de7372cfb549a59..26753b6ac0a150c9989bf7f1f289f7d94a6c5c23 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -518,6 +518,12 @@ i915_pipe_enabled(struct drm_device *dev, int pipe) } } +static u32 i8xx_get_vblank_counter(struct drm_device *dev, int pipe) +{ + /* Gen2 doesn't have a hardware frame counter */ + return 0; +} + /* Called from drm generic code, passed a 'crtc', which * we use as a pipe index */ @@ -3245,7 +3251,10 @@ void intel_irq_init(struct drm_device *dev) pm_qos_add_request(&dev_priv->pm_qos, PM_QOS_CPU_DMA_LATENCY, PM_QOS_DEFAULT_VALUE); - if (IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5) { + if (IS_GEN2(dev)) { + dev->max_vblank_count = 0; + dev->driver->get_vblank_counter = i8xx_get_vblank_counter; + } else if (IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5) { dev->max_vblank_count = 0xffffffff; /* full 32 bit counter */ dev->driver->get_vblank_counter = gm45_get_vblank_counter; } else {