diff options
| author | Michel Dänzer <michel.daenzer@amd.com> | 2016-08-08 09:23:03 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2016-08-10 20:27:51 +0200 |
| commit | c229bfbbd04ac112bd15331d3a06d12e4e86a45c (patch) | |
| tree | 8ef5a3166d786dfe6df0a08f4087817279532fba /drivers/gpu/drm/drm_crtc.c | |
| parent | gpu: drm: radeon: radeon_i2c: don't print error when adding adapter fails (diff) | |
| download | linux-c229bfbbd04ac112bd15331d3a06d12e4e86a45c.tar.xz linux-c229bfbbd04ac112bd15331d3a06d12e4e86a45c.zip | |
drm: Add page_flip_target CRTC hook v2
Mostly the same as the existing page_flip hook, but takes an additional
parameter specifying the target vertical blank period when the flip
should take effect.
v2:
* Add curly braces around else statement corresponding to an if block
with curly braces (Alex Deucher)
* Call drm_crtc_vblank_put in the error case (Daniel Vetter)
* Clarify entry point documentation comment (Daniel Vetter)
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/drm_crtc.c')
| -rw-r--r-- | drivers/gpu/drm/drm_crtc.c | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index b1dbb60af99f..a316f7336aeb 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -5402,6 +5402,7 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev, struct drm_crtc *crtc; struct drm_framebuffer *fb = NULL; struct drm_pending_vblank_event *e = NULL; + u32 target_vblank = 0; int ret = -EINVAL; if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS || @@ -5415,6 +5416,19 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev, if (!crtc) return -ENOENT; + if (crtc->funcs->page_flip_target) { + int r; + + r = drm_crtc_vblank_get(crtc); + if (r) + return r; + + target_vblank = drm_crtc_vblank_count(crtc) + + !(page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC); + } else if (crtc->funcs->page_flip == NULL) { + return -EINVAL; + } + drm_modeset_lock_crtc(crtc, crtc->primary); if (crtc->primary->fb == NULL) { /* The framebuffer is currently unbound, presumably @@ -5425,9 +5439,6 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev, goto out; } - if (crtc->funcs->page_flip == NULL) - goto out; - fb = drm_framebuffer_lookup(dev, page_flip->fb_id); if (!fb) { ret = -ENOENT; @@ -5468,7 +5479,12 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev, } crtc->primary->old_fb = crtc->primary->fb; - ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags); + if (crtc->funcs->page_flip_target) + ret = crtc->funcs->page_flip_target(crtc, fb, e, + page_flip->flags, + target_vblank); + else + ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags); if (ret) { if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) drm_event_cancel_free(dev, &e->base); @@ -5481,6 +5497,8 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev, } out: + if (ret) + drm_crtc_vblank_put(crtc); if (fb) drm_framebuffer_unreference(fb); if (crtc->primary->old_fb) |