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author | Maarten Lankhorst <maarten.lankhorst@linux.intel.com> | 2018-10-22 15:51:52 +0200 |
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committer | Maarten Lankhorst <maarten.lankhorst@linux.intel.com> | 2018-10-24 10:29:28 +0200 |
commit | 1ab554b0099b655141c47ec5cd05d126eaed4868 (patch) | |
tree | ab6deb29f264d11b77cbb0ff0c30b7112d39d339 /drivers/gpu/drm/i915/intel_display.c | |
parent | 6711bd730b38cf19cd8e4156a761f4d9d57d8c43 (diff) | |
download | linux-1ab554b0099b655141c47ec5cd05d126eaed4868.tar.bz2 |
drm/i915/gen11: Link nv12 Y and UV planes in the atomic state, v5.
To make NV12 working on icl, we need to update 2 planes simultaneously.
I've chosen to do this in the CRTC step after plane validation is done,
so we know what planes are (in)visible. The linked Y plane will get
updated in intel_plane_update_planes_on_crtc(), by the call to
update_slave, which gets the master's plane_state as argument.
The link requires both planes for atomic_update to work,
so make sure skl_ddb_add_affected_planes() adds both states.
Changes since v1:
- Introduce icl_is_nv12_y_plane(), instead of hardcoding sprite numbers.
- Put all the state updating login in intel_plane_atomic_check_with_state().
- Clean up changes in intel_plane_atomic_check().
Changes since v2:
- Fix intel_atomic_get_old_plane_state() to actually return old state.
- Move visibility changes to preparation patch.
- Only try to find a Y plane on gen11, earlier platforms only require
a single plane.
Changes since v3:
- Fix checkpatch warning about to_intel_crtc() usage.
- Add affected planes from icl_add_linked_planes() before check_planes(),
it's a cleaner way to do this. (Ville)
Changes since v4:
- Clear plane links in icl_check_nv12_planes() for clarity.
- Only pass crtc_state to icl_check_nv12_planes().
- Use for_each_new_intel_plane_in_state() in icl_check_nv12_planes.
- Rename aux to linked. (Ville)
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181022135152.15324-1-maarten.lankhorst@linux.intel.com
[mlankhorst: Change bool slave to u32, to satisfy checkpatch]
[mlankhorst: Add WARN_ON's based on Ville's suggestion]
Diffstat (limited to 'drivers/gpu/drm/i915/intel_display.c')
-rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 969d22ca8dcd..0224221ee214 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -10713,6 +10713,98 @@ static bool check_single_encoder_cloning(struct drm_atomic_state *state, return true; } +static int icl_add_linked_planes(struct intel_atomic_state *state) +{ + struct intel_plane *plane, *linked; + struct intel_plane_state *plane_state, *linked_plane_state; + int i; + + for_each_new_intel_plane_in_state(state, plane, plane_state, i) { + linked = plane_state->linked_plane; + + if (!linked) + continue; + + linked_plane_state = intel_atomic_get_plane_state(state, linked); + if (IS_ERR(linked_plane_state)) + return PTR_ERR(linked_plane_state); + + WARN_ON(linked_plane_state->linked_plane != plane); + WARN_ON(linked_plane_state->slave == plane_state->slave); + } + + return 0; +} + +static int icl_check_nv12_planes(struct intel_crtc_state *crtc_state) +{ + struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc); + struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); + struct intel_atomic_state *state = to_intel_atomic_state(crtc_state->base.state); + struct intel_plane *plane, *linked; + struct intel_plane_state *plane_state; + int i; + + if (INTEL_GEN(dev_priv) < 11) + return 0; + + /* + * Destroy all old plane links and make the slave plane invisible + * in the crtc_state->active_planes mask. + */ + for_each_new_intel_plane_in_state(state, plane, plane_state, i) { + if (plane->pipe != crtc->pipe || !plane_state->linked_plane) + continue; + + plane_state->linked_plane = NULL; + if (plane_state->slave && !plane_state->base.visible) + crtc_state->active_planes &= ~BIT(plane->id); + + plane_state->slave = false; + } + + if (!crtc_state->nv12_planes) + return 0; + + for_each_new_intel_plane_in_state(state, plane, plane_state, i) { + struct intel_plane_state *linked_state = NULL; + + if (plane->pipe != crtc->pipe || + !(crtc_state->nv12_planes & BIT(plane->id))) + continue; + + for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, linked) { + if (!icl_is_nv12_y_plane(linked->id)) + continue; + + if (crtc_state->active_planes & BIT(linked->id)) + continue; + + linked_state = intel_atomic_get_plane_state(state, linked); + if (IS_ERR(linked_state)) + return PTR_ERR(linked_state); + + break; + } + + if (!linked_state) { + DRM_DEBUG_KMS("Need %d free Y planes for NV12\n", + hweight8(crtc_state->nv12_planes)); + + return -EINVAL; + } + + plane_state->linked_plane = linked; + + linked_state->slave = true; + linked_state->linked_plane = plane; + crtc_state->active_planes |= BIT(linked->id); + DRM_DEBUG_KMS("Using %s as Y plane for %s\n", linked->base.name, plane->base.name); + } + + return 0; +} + static int intel_crtc_atomic_check(struct drm_crtc *crtc, struct drm_crtc_state *crtc_state) { @@ -10785,6 +10877,8 @@ static int intel_crtc_atomic_check(struct drm_crtc *crtc, ret = skl_update_scaler_crtc(pipe_config); if (!ret) + ret = icl_check_nv12_planes(pipe_config); + if (!ret) ret = skl_check_pipe_max_pixel_rate(intel_crtc, pipe_config); if (!ret) @@ -12450,6 +12544,10 @@ static int intel_atomic_check(struct drm_device *dev, intel_state->cdclk.logical = dev_priv->cdclk.logical; } + ret = icl_add_linked_planes(intel_state); + if (ret) + return ret; + ret = drm_atomic_helper_check_planes(dev, state); if (ret) return ret; |