diff options
| author | Maxime Ripard <maxime@cerno.tech> | 2021-10-25 16:11:07 +0200 |
|---|---|---|
| committer | Maxime Ripard <maxime@cerno.tech> | 2021-11-05 12:53:22 +0100 |
| commit | eeb6ab4639590130d25670204ab7b6011333d685 (patch) | |
| tree | f6b00a61c476632c513a4b92840ba7bafadb46c4 /drivers/gpu/drm/vc4/vc4_crtc.c | |
| parent | 0c250c150c74a90db298bf2a8bcd0a1dabed2e2f (diff) | |
drm/vc4: crtc: Copy assigned channel to the CRTC
Accessing the crtc->state pointer from outside the modesetting context
is not allowed. We thus need to copy whatever we need from the KMS state
to our structure in order to access it.
In VC4, a number of users of that pointers have crept in over the years,
and the previous commits removed them all but the HVS channel a CRTC has
been assigned.
Let's move this channel in struct vc4_crtc at atomic_begin() time, drop
it from our private state structure, and remove our use of crtc->state
from our vblank handler entirely.
Link: https://lore.kernel.org/all/YWgteNaNeaS9uWDe@phenom.ffwll.local/
Link: https://lore.kernel.org/r/20211025141113.702757-4-maxime@cerno.tech
Fixes: 87ebcd42fb7b ("drm/vc4: crtc: Assign output to channel automatically")
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Diffstat (limited to 'drivers/gpu/drm/vc4/vc4_crtc.c')
| -rw-r--r-- | drivers/gpu/drm/vc4/vc4_crtc.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c index 63143a1333fd..287dbc89ad64 100644 --- a/drivers/gpu/drm/vc4/vc4_crtc.c +++ b/drivers/gpu/drm/vc4/vc4_crtc.c @@ -716,8 +716,7 @@ static void vc4_crtc_handle_page_flip(struct vc4_crtc *vc4_crtc) struct drm_crtc *crtc = &vc4_crtc->base; struct drm_device *dev = crtc->dev; struct vc4_dev *vc4 = to_vc4_dev(dev); - struct vc4_crtc_state *vc4_state = to_vc4_crtc_state(crtc->state); - u32 chan = vc4_state->assigned_channel; + u32 chan = vc4_crtc->current_hvs_channel; unsigned long flags; spin_lock_irqsave(&dev->event_lock, flags); @@ -963,6 +962,7 @@ static const struct drm_crtc_funcs vc4_crtc_funcs = { static const struct drm_crtc_helper_funcs vc4_crtc_helper_funcs = { .mode_valid = vc4_crtc_mode_valid, .atomic_check = vc4_crtc_atomic_check, + .atomic_begin = vc4_hvs_atomic_begin, .atomic_flush = vc4_hvs_atomic_flush, .atomic_enable = vc4_crtc_atomic_enable, .atomic_disable = vc4_crtc_atomic_disable, |