On 2019-09-03 3:06 p.m., Daniel Vetter wrote:
> It's the only flag anyone actually cares about. Plus if we're unlucky,
> the atomic ioctl might need a different flag for async flips. So
> better to abstract this away from the uapi a bit.
>
> Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
> Cc: Michel Dänzer <michel@xxxxxxxxxxx>
> Cc: Alex Deucher <alexdeucher@xxxxxxxxx>
> Cc: Adam Jackson <ajax@xxxxxxxxxx>
> Cc: Sean Paul <sean@xxxxxxxxxx>
> Cc: David Airlie <airlied@xxxxxxxx>
> Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
> Cc: Maxime Ripard <maxime.ripard@xxxxxxxxxxx>
> Cc: Daniel Vetter <daniel@xxxxxxxx>
> Cc: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>
> Cc: Leo Li <sunpeng.li@xxxxxxx>
> Cc: Harry Wentland <harry.wentland@xxxxxxx>
> Cc: David Francis <David.Francis@xxxxxxx>
> Cc: Mario Kleiner <mario.kleiner.de@xxxxxxxxx>
> Cc: Bhawanpreet Lakha <Bhawanpreet.Lakha@xxxxxxx>
> Cc: Ben Skeggs <bskeggs@xxxxxxxxxx>
> Cc: "Christian König" <christian.koenig@xxxxxxx>
> Cc: Ilia Mirkin <imirkin@xxxxxxxxxxxx>
> Cc: Sam Ravnborg <sam@xxxxxxxxxxxx>
> Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> ---
Series is:
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>
I would like to see a new flag eventually show up for atomic as well,
but the existing one is effectively broken at this point and I would
hope that no userspace is setting it expecting that it actually does
something.
At this point we don't really gain anything from enabling atomic in DDX
I think, most drivers already make use of DRM helpers to map these
legacy IOCTLs to atomic anyway.
Nicholas Kazlauskas
> drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 5 ++---
> drivers/gpu/drm/drm_atomic_helper.c | 2 +-
> drivers/gpu/drm/drm_atomic_state_helper.c | 2 +-
> drivers/gpu/drm/nouveau/dispnv50/wndw.c | 4 ++--
> include/drm/drm_crtc.h | 8 ++++----
> 5 files changed, 10 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> index 0a71ed1e7762..2f0ef0820f00 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> @@ -5756,8 +5756,7 @@ static void amdgpu_dm_commit_planes(struct drm_atomic_state *state,
> * change FB pitch, DCC state, rotation or mirroing.
> */
> bundle->flip_addrs[planes_count].flip_immediate =
> - (crtc->state->pageflip_flags &
> - DRM_MODE_PAGE_FLIP_ASYNC) != 0 &&
> + crtc->state->async_flip &&
> acrtc_state->update_type == UPDATE_TYPE_FAST;
>
> timestamp_ns = ktime_get_ns();
> @@ -6334,7 +6333,7 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state)
> amdgpu_dm_enable_crtc_interrupts(dev, state, true);
>
> for_each_new_crtc_in_state(state, crtc, new_crtc_state, j)
> - if (new_crtc_state->pageflip_flags & DRM_MODE_PAGE_FLIP_ASYNC)
> + if (new_crtc_state->async_flip)
> wait_for_vblank = false;
>
> /* update planes when needed per crtc*/
> diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
> index e9c6112e7f73..1e5293eb66e3 100644
> --- a/drivers/gpu/drm/drm_atomic_helper.c
> +++ b/drivers/gpu/drm/drm_atomic_helper.c
> @@ -3263,7 +3263,7 @@ static int page_flip_common(struct drm_atomic_state *state,
> return PTR_ERR(crtc_state);
>
> crtc_state->event = event;
> - crtc_state->pageflip_flags = flags;
> + crtc_state->async_flip = flags & DRM_MODE_PAGE_FLIP_ASYNC;
>
> plane_state = drm_atomic_get_plane_state(state, plane);
> if (IS_ERR(plane_state))
> diff --git a/drivers/gpu/drm/drm_atomic_state_helper.c b/drivers/gpu/drm/drm_atomic_state_helper.c
> index 46dc264a248b..d0a937fb0c56 100644
> --- a/drivers/gpu/drm/drm_atomic_state_helper.c
> +++ b/drivers/gpu/drm/drm_atomic_state_helper.c
> @@ -128,7 +128,7 @@ void __drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc,
> state->zpos_changed = false;
> state->commit = NULL;
> state->event = NULL;
> - state->pageflip_flags = 0;
> + state->async_flip = false;
>
> /* Self refresh should be canceled when a new update is available */
> state->active = drm_atomic_crtc_effectively_active(state);
> diff --git a/drivers/gpu/drm/nouveau/dispnv50/wndw.c b/drivers/gpu/drm/nouveau/dispnv50/wndw.c
> index 2db029371c91..5193b6257061 100644
> --- a/drivers/gpu/drm/nouveau/dispnv50/wndw.c
> +++ b/drivers/gpu/drm/nouveau/dispnv50/wndw.c
> @@ -267,7 +267,7 @@ nv50_wndw_atomic_check_acquire(struct nv50_wndw *wndw, bool modeset,
> asyw->image.pitch[0] = fb->base.pitches[0];
> }
>
> - if (!(asyh->state.pageflip_flags & DRM_MODE_PAGE_FLIP_ASYNC))
> + if (!asyh->state.async_flip)
> asyw->image.interval = 1;
> else
> asyw->image.interval = 0;
> @@ -383,7 +383,7 @@ nv50_wndw_atomic_check_lut(struct nv50_wndw *wndw,
> }
>
> /* Can't do an immediate flip while changing the LUT. */
> - asyh->state.pageflip_flags &= ~DRM_MODE_PAGE_FLIP_ASYNC;
> + asyh->state.async_flip = false;
> }
>
> static int
> diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
> index 7e2963cad543..900ae8d452b8 100644
> --- a/include/drm/drm_crtc.h
> +++ b/include/drm/drm_crtc.h
> @@ -284,12 +284,12 @@ struct drm_crtc_state {
> u32 target_vblank;
>
> /**
> - * @pageflip_flags:
> + * @async_flip:
> *
> - * DRM_MODE_PAGE_FLIP_* flags, as passed to the page flip ioctl.
> - * Zero in any other case.
> + * This is set when DRM_MODE_PAGE_FLIP_ASYNC is set in the legacy
> + * PAGE_FLIP IOCTL. It's not wired up for the atomic IOCTL itself yet.
> */
> - u32 pageflip_flags;
> + bool async_flip;
>
> /**
> * @vrr_enabled:
>
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