[PATCH v8 4/4] drm/i915: Put "cooked" vlank counters in frame CRC lines

Tomeu Vizoso
2016-09-09T09:57:32Z

Use drm_accurate_vblank_count so we have the full 32 bit to represent
the frame counter and userspace has a simpler way of knowing when the
counter wraps around.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
---

drivers/gpu/drm/i915/i915_irq.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index e56c7f627093..6d3d4ad62498 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -1489,7 +1489,6 @@ static void display_pipe_crc_irq_handler(struct drm_i915_private *dev_priv,
struct drm_driver *driver = dev_priv->drm.driver;
uint32_t crcs[5];
int head, tail, ret;
- u32 frame;

spin_lock(&pipe_crc->lock);
if (pipe_crc->source) {
@@ -1545,8 +1544,9 @@ static void display_pipe_crc_irq_handler(struct drm_i915_private *dev_priv,
crcs[2] = crc2;
crcs[3] = crc3;
crcs[4] = crc4;
- frame = driver->get_vblank_counter(&dev_priv->drm, pipe);
- ret = drm_crtc_add_crc_entry(crtc, true, frame, crcs);
+ ret = drm_crtc_add_crc_entry(crtc, true,
+ drm_accurate_vblank_count(crtc),
+ crcs);
spin_unlock(&crtc->crc.lock);
if (!ret)
wake_up_interruptible(&crtc->crc.wq);
--
2.7.4