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| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-09-10 17:36:10 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-09-11 13:38:48 +0200 |
| commit | fb446a1acdb981921de06bfde3a2178da7174481 (patch) | |
| tree | 7ad2ab06442121ff46e4590437e1a3c69bff0181 /drivers/gpu/drm/drm_irq.c | |
| parent | drm: Only update final vblank count when precise ts is available (diff) | |
| download | linux-fb446a1acdb981921de06bfde3a2178da7174481.tar.xz linux-fb446a1acdb981921de06bfde3a2178da7174481.zip | |
drm: Simplify return value of drm_get_last_vbltimestamp
Imo u32 hints at a register value, but in reality all callers only
care whether the sampled timestamp is precise or not. So give them
just a bool.
Also move the declaration out of drmP.h, it's only used in drm_irq.c.
v2: Also drop the EXPORT_SYMBOL, spotted by Mario.
Cc: Mario Kleiner <mario.kleiner.de@gmail.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Diffstat (limited to 'drivers/gpu/drm/drm_irq.c')
| -rw-r--r-- | drivers/gpu/drm/drm_irq.c | 25 |
1 files changed, 15 insertions, 10 deletions
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c index ad699b729278..15f748c7fa7e 100644 --- a/drivers/gpu/drm/drm_irq.c +++ b/drivers/gpu/drm/drm_irq.c @@ -55,6 +55,10 @@ */ #define DRM_REDUNDANT_VBLIRQ_THRESH_NS 1000000 +static bool +drm_get_last_vbltimestamp(struct drm_device *dev, int crtc, + struct timeval *tvblank, unsigned flags); + /** * drm_update_vblank_count - update the master vblank counter * @dev: DRM device @@ -74,7 +78,8 @@ static void drm_update_vblank_count(struct drm_device *dev, int crtc) { struct drm_vblank_crtc *vblank = &dev->vblank[crtc]; - u32 cur_vblank, diff, tslot, rc; + u32 cur_vblank, diff, tslot; + bool rc; struct timeval t_vblank; /* @@ -132,7 +137,7 @@ static void vblank_disable_and_save(struct drm_device *dev, int crtc) unsigned long irqflags; u32 vblcount; s64 diff_ns; - int vblrc; + bool vblrc; struct timeval tvblank; int count = DRM_TIMESTAMP_MAXRETRIES; @@ -156,7 +161,7 @@ static void vblank_disable_and_save(struct drm_device *dev, int crtc) * vblank interrupt is disabled. */ if (!vblank->enabled && - drm_get_last_vbltimestamp(dev, crtc, &tvblank, 0) > 0) { + drm_get_last_vbltimestamp(dev, crtc, &tvblank, 0)) { drm_update_vblank_count(dev, crtc); spin_unlock_irqrestore(&dev->vblank_time_lock, irqflags); return; @@ -204,7 +209,7 @@ static void vblank_disable_and_save(struct drm_device *dev, int crtc) * available. In that case we can't account for this and just * hope for the best. */ - if ((vblrc > 0) && (abs64(diff_ns) > 1000000)) { + if (vblrc && (abs64(diff_ns) > 1000000)) { /* Store new timestamp in ringbuffer. */ vblanktimestamp(dev, crtc, vblcount + 1) = tvblank; @@ -781,10 +786,11 @@ static struct timeval get_drm_timestamp(void) * call, i.e., it isn't very precisely locked to the true vblank. * * Returns: - * Non-zero if timestamp is considered to be very precise, zero otherwise. + * True if timestamp is considered to be very precise, false otherwise. */ -u32 drm_get_last_vbltimestamp(struct drm_device *dev, int crtc, - struct timeval *tvblank, unsigned flags) +static bool +drm_get_last_vbltimestamp(struct drm_device *dev, int crtc, + struct timeval *tvblank, unsigned flags) { int ret; @@ -796,7 +802,7 @@ u32 drm_get_last_vbltimestamp(struct drm_device *dev, int crtc, ret = dev->driver->get_vblank_timestamp(dev, crtc, &max_error, tvblank, flags); if (ret > 0) - return (u32) ret; + return true; } /* GPU high precision timestamp query unsupported or failed. @@ -804,9 +810,8 @@ u32 drm_get_last_vbltimestamp(struct drm_device *dev, int crtc, */ *tvblank = get_drm_timestamp(); - return 0; + return false; } -EXPORT_SYMBOL(drm_get_last_vbltimestamp); /** * drm_vblank_count - retrieve "cooked" vblank counter value |