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drm/i915/dp: Add DP tunnel atomic state and check BW limit

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Add the atomic state during a modeset required to enable the DP tunnel
BW allocation mode on links where such a tunnel was detected. This state
applies to an already enabled output, the state added for a newly
enabled output will be computed and added/cleared to/from the atomic
state in a follow-up patch.

v2:
- s/old_crtc_state/crtc_state in intel_crtc_duplicate_state().
- Move intel_dp_tunnel_atomic_cleanup_inherited_state() to a follow-up
  patch adding the corresponding state. (Ville)
- Move intel_dp_tunnel_atomic_clear_stream_bw() to a follow-up
  patch adding the corresponding state.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240220211841.448846-14-imre.deak@intel.com
This commit is contained in:
Imre Deak
2024-02-20 23:18:33 +02:00
parent 91888b5b1a
commit 39818c06c8
3 changed files with 23 additions and 0 deletions
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6
drivers/gpu/drm/i915/display/intel_atomic.c
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@@ -260,6 +260,10 @@ intel_crtc_duplicate_state(struct drm_crtc *crtc)
if (crtc_state->post_csc_lut)
drm_property_blob_get(crtc_state->post_csc_lut);
if (crtc_state->dp_tunnel_ref.tunnel)
drm_dp_tunnel_ref_get(crtc_state->dp_tunnel_ref.tunnel,
&crtc_state->dp_tunnel_ref);
crtc_state->update_pipe = false;
crtc_state->update_m_n = false;
crtc_state->update_lrr = false;
@@ -311,6 +315,8 @@ intel_crtc_destroy_state(struct drm_crtc *crtc,
__drm_atomic_helper_crtc_destroy_state(&crtc_state->uapi);
intel_crtc_free_hw_state(crtc_state);
if (crtc_state->dp_tunnel_ref.tunnel)
drm_dp_tunnel_ref_put(&crtc_state->dp_tunnel_ref);
kfree(crtc_state);
}