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drm/i915/display: Add hook to check optimization support for Intel platforms

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Add a hook that uses the drm core tunneling function to check
whether panel replay bandwidth optimization support is present.

v2: Move DISPLAY_VER() check to
intel_dp_tunnel_pr_optimization_supported(). [Jouni]

Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patch.msgid.link/20260330133620.3750559-3-animesh.manna@intel.com
This commit is contained in:
Animesh Manna 2026-03-30 19:06:19 +05:30
parent 3d353d6c53
commit aa46f5470c
2 changed files with 24 additions and 0 deletions
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18
drivers/gpu/drm/i915/display/intel_dp_tunnel.c
View File

@ -296,6 +296,24 @@ bool intel_dp_tunnel_bw_alloc_is_enabled(struct intel_dp *intel_dp)
return drm_dp_tunnel_bw_alloc_is_enabled(intel_dp->tunnel);
}
/**
* intel_dp_tunnel_pr_optimization_supported - Query the PR BW optimization support
* @intel_dp: DP port object
*
* Query whether a DP tunnel supports the PR BW optimization.
*
* Returns %true if the BW allocation mode is supported on @intel_dp.
*/
bool intel_dp_tunnel_pr_optimization_supported(struct intel_dp *intel_dp)
{
struct intel_display *display = to_intel_display(intel_dp);
if (DISPLAY_VER(display) < 35)
return false;
return drm_dp_tunnel_pr_optimization_supported(intel_dp->tunnel);
}
/**
* intel_dp_tunnel_suspend - Suspend a DP tunnel connected on a port
* @intel_dp: DP port object

6
drivers/gpu/drm/i915/display/intel_dp_tunnel.h
View File

@ -32,6 +32,7 @@ void intel_dp_tunnel_resume(struct intel_dp *intel_dp,
void intel_dp_tunnel_suspend(struct intel_dp *intel_dp);
bool intel_dp_tunnel_bw_alloc_is_enabled(struct intel_dp *intel_dp);
bool intel_dp_tunnel_pr_optimization_supported(struct intel_dp *intel_dp);
void
intel_dp_tunnel_atomic_cleanup_inherited_state(struct intel_atomic_state *state);
@ -76,6 +77,11 @@ static inline bool intel_dp_tunnel_bw_alloc_is_enabled(struct intel_dp *intel_dp
return false;
}
static inline bool intel_dp_tunnel_pr_optimization_supported(struct intel_dp *intel_dp)
{
return false;
}
static inline void
intel_dp_tunnel_atomic_cleanup_inherited_state(struct intel_atomic_state *state) {}