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author | Dave Airlie <airlied@redhat.com> | 2014-10-28 01:03:34 +0100 |
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committer | Dave Airlie <airlied@redhat.com> | 2014-10-28 01:03:34 +0100 |
commit | 30aad89ad0697028b9aa0867b3e95cc0ccca064d (patch) | |
tree | 8f5917318dfd6590edd94be332ca6a9a834e3431 /drivers | |
parent | Merge tag 'media/v3.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/... (diff) | |
parent | drm/armada: convert to use vblank_on/off calls (diff) | |
download | linux-30aad89ad0697028b9aa0867b3e95cc0ccca064d.tar.xz linux-30aad89ad0697028b9aa0867b3e95cc0ccca064d.zip |
Merge branch 'drm-armada-fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm into drm-fixes
Three changes for the Armada DRM driver:
1. Add back the flags which tell the DRM core that we can do vblank. This
was removed in error during the recent restructuring, and came to light
while trying textured Xv rendering.
2. Fixing a refcount leak with Xv overlay.
3. As per recent discussion, the drm_vblank_pre_modeset() calls can cause
deadlock with other changes to generic code. This change prevents those
deadlocks by switching to the drm_crtc_vblank_*() calls instead.
* 'drm-armada-fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
drm/armada: convert to use vblank_on/off calls
drm/armada: fix page_flip refcounting leak
drm/armada: add IRQ support back
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/gpu/drm/armada/armada_crtc.c | 21 | ||||
-rw-r--r-- | drivers/gpu/drm/armada/armada_drv.c | 3 |
2 files changed, 12 insertions, 12 deletions
diff --git a/drivers/gpu/drm/armada/armada_crtc.c b/drivers/gpu/drm/armada/armada_crtc.c index 9a0cc09e6653..e4a1490b42c2 100644 --- a/drivers/gpu/drm/armada/armada_crtc.c +++ b/drivers/gpu/drm/armada/armada_crtc.c @@ -260,7 +260,7 @@ static void armada_drm_vblank_off(struct armada_crtc *dcrtc) * Tell the DRM core that vblank IRQs aren't going to happen for * a while. This cleans up any pending vblank events for us. */ - drm_vblank_off(dev, dcrtc->num); + drm_crtc_vblank_off(&dcrtc->crtc); /* Handle any pending flip event. */ spin_lock_irq(&dev->event_lock); @@ -289,6 +289,8 @@ static void armada_drm_crtc_dpms(struct drm_crtc *crtc, int dpms) armada_drm_crtc_update(dcrtc); if (dpms_blanked(dpms)) armada_drm_vblank_off(dcrtc); + else + drm_crtc_vblank_on(&dcrtc->crtc); } } @@ -526,7 +528,7 @@ static int armada_drm_crtc_mode_set(struct drm_crtc *crtc, /* Wait for pending flips to complete */ wait_event(dcrtc->frame_wait, !dcrtc->frame_work); - drm_vblank_pre_modeset(crtc->dev, dcrtc->num); + drm_crtc_vblank_off(crtc); crtc->mode = *adj; @@ -617,7 +619,7 @@ static int armada_drm_crtc_mode_set(struct drm_crtc *crtc, armada_drm_crtc_update(dcrtc); - drm_vblank_post_modeset(crtc->dev, dcrtc->num); + drm_crtc_vblank_on(crtc); armada_drm_crtc_finish_fb(dcrtc, old_fb, dpms_blanked(dcrtc->dpms)); return 0; @@ -945,18 +947,15 @@ static int armada_drm_crtc_page_flip(struct drm_crtc *crtc, armada_reg_queue_end(work->regs, i); /* - * Hold the old framebuffer for the work - DRM appears to drop our - * reference to the old framebuffer in drm_mode_page_flip_ioctl(). + * Ensure that we hold a reference on the new framebuffer. + * This has to match the behaviour in mode_set. */ - drm_framebuffer_reference(work->old_fb); + drm_framebuffer_reference(fb); ret = armada_drm_crtc_queue_frame_work(dcrtc, work); if (ret) { - /* - * Undo our reference above; DRM does not drop the reference - * to this object on error, so that's okay. - */ - drm_framebuffer_unreference(work->old_fb); + /* Undo our reference above */ + drm_framebuffer_unreference(fb); kfree(work); return ret; } diff --git a/drivers/gpu/drm/armada/armada_drv.c b/drivers/gpu/drm/armada/armada_drv.c index f672e6ad8afa..908e5316eac4 100644 --- a/drivers/gpu/drm/armada/armada_drv.c +++ b/drivers/gpu/drm/armada/armada_drv.c @@ -190,6 +190,7 @@ static int armada_drm_load(struct drm_device *dev, unsigned long flags) if (ret) goto err_comp; + dev->irq_enabled = true; dev->vblank_disable_allowed = 1; ret = armada_fbdev_init(dev); @@ -331,7 +332,7 @@ static struct drm_driver armada_drm_driver = { .desc = "Armada SoC DRM", .date = "20120730", .driver_features = DRIVER_GEM | DRIVER_MODESET | - DRIVER_PRIME, + DRIVER_HAVE_IRQ | DRIVER_PRIME, .ioctls = armada_ioctls, .fops = &armada_drm_fops, }; |