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| author | =?utf-8?q?Michel_D=C3=A4nzer?= <michel@tungstengraphics.com> | 2006-10-24 22:28:51 +1000 |
|---|---|---|
| committer | airlied <airlied@linux.ie> | 2006-12-07 15:53:28 +1100 |
| commit | 68815bad7239989d92f315c10d9ef65a11945a75 (patch) | |
| tree | 148ae38036feb708147022a8ecc57daa1b61d9c6 /drivers/char/drm/i915_irq.c | |
| parent | 776c9443e28dddbde9b513db6cb8221c45b3a269 (diff) | |
| download | linux-3.10-68815bad7239989d92f315c10d9ef65a11945a75.tar.gz linux-3.10-68815bad7239989d92f315c10d9ef65a11945a75.tar.bz2 linux-3.10-68815bad7239989d92f315c10d9ef65a11945a75.zip | |
drm: add support for secondary vertical blank interrupt to i915
When the vertical blank interrupt is enabled for both pipes, pipe A is
considered primary and pipe B secondary. When it's only enabled for one pipe,
it's always considered primary for backwards compatibility.
Signed-off-by: Dave Airlie <airlied@linux.ie>
Diffstat (limited to 'drivers/char/drm/i915_irq.c')
| -rw-r--r-- | drivers/char/drm/i915_irq.c | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/drivers/char/drm/i915_irq.c b/drivers/char/drm/i915_irq.c index 0d4a162aa38..33d40187696 100644 --- a/drivers/char/drm/i915_irq.c +++ b/drivers/char/drm/i915_irq.c @@ -60,7 +60,16 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS) DRM_WAKEUP(&dev_priv->irq_queue); if (temp & (VSYNC_PIPEA_FLAG | VSYNC_PIPEB_FLAG)) { - atomic_inc(&dev->vbl_received); + if ((dev_priv->vblank_pipe & + (DRM_I915_VBLANK_PIPE_A | DRM_I915_VBLANK_PIPE_B)) + == (DRM_I915_VBLANK_PIPE_A | DRM_I915_VBLANK_PIPE_B)) { + if (temp & VSYNC_PIPEA_FLAG) + atomic_inc(&dev->vbl_received); + if (temp & VSYNC_PIPEB_FLAG) + atomic_inc(&dev->vbl_received2); + } else + atomic_inc(&dev->vbl_received); + DRM_WAKEUP(&dev->vbl_queue); drm_vbl_send_signals(dev); } @@ -120,7 +129,8 @@ static int i915_wait_irq(drm_device_t * dev, int irq_nr) return ret; } -int i915_driver_vblank_wait(drm_device_t *dev, unsigned int *sequence) +static int i915_driver_vblank_do_wait(drm_device_t *dev, unsigned int *sequence, + atomic_t *counter) { drm_i915_private_t *dev_priv = dev->dev_private; unsigned int cur_vblank; @@ -132,7 +142,7 @@ int i915_driver_vblank_wait(drm_device_t *dev, unsigned int *sequence) } DRM_WAIT_ON(ret, dev->vbl_queue, 3 * DRM_HZ, - (((cur_vblank = atomic_read(&dev->vbl_received)) + (((cur_vblank = atomic_read(counter)) - *sequence) <= (1<<23))); *sequence = cur_vblank; @@ -141,6 +151,16 @@ int i915_driver_vblank_wait(drm_device_t *dev, unsigned int *sequence) } +int i915_driver_vblank_wait(drm_device_t *dev, unsigned int *sequence) +{ + return i915_driver_vblank_do_wait(dev, sequence, &dev->vbl_received); +} + +int i915_driver_vblank_wait2(drm_device_t *dev, unsigned int *sequence) +{ + return i915_driver_vblank_do_wait(dev, sequence, &dev->vbl_received2); +} + /* Needs the lock as it touches the ring. */ int i915_irq_emit(DRM_IOCTL_ARGS) |