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drm/i915/color: Add framework to program CSC

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Add framework to program CSC. It enables copying of matrix from UAPI
to intel plane state. Also add helper functions which will eventually
program values to hardware.

Add a crtc state variable to track plane color change.

v2:
- Add crtc_state->plane_color_changed
- Improve comments (Suraj)
- s/intel_plane_*_color/intel_plane_color_* (Suraj)

v3:
- align parameters with open braces (Suraj)
- Improve commit message (Suraj)

v4:
- Re-arrange variable declaration (Suraj)

Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patch.msgid.link/20251203085211.3663374-6-uma.shankar@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Chaitanya Kumar Borah
2025-12-03 14:22:01 +05:30
committed by Jani Nikula
parent ef10531681
commit a78f1b6baf
4 changed files with 77 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

49
drivers/gpu/drm/i915/display/intel_plane.c
View File

@@ -49,6 +49,7 @@
#include "i9xx_plane_regs.h"
#include "intel_cdclk.h"
#include "intel_cursor.h"
#include "intel_colorop.h"
#include "intel_display_rps.h"
#include "intel_display_trace.h"
#include "intel_display_types.h"
@@ -336,6 +337,52 @@ intel_plane_copy_uapi_plane_damage(struct intel_plane_state *new_plane_state,
*damage = drm_plane_state_src(&new_uapi_plane_state->uapi);
}
static bool
intel_plane_colorop_replace_blob(struct intel_plane_state *plane_state,
struct intel_colorop *intel_colorop,
struct drm_property_blob *blob)
{
if (intel_colorop->id == INTEL_PLANE_CB_CSC)
return drm_property_replace_blob(&plane_state->hw.ctm, blob);
return false;
}
static void
intel_plane_color_copy_uapi_to_hw_state(struct intel_plane_state *plane_state,
const struct intel_plane_state *from_plane_state,
struct intel_crtc *crtc)
{
struct drm_colorop *iter_colorop, *colorop;
struct drm_colorop_state *new_colorop_state;
struct drm_atomic_state *state = plane_state->uapi.state;
struct intel_colorop *intel_colorop;
struct drm_property_blob *blob;
struct intel_atomic_state *intel_atomic_state = to_intel_atomic_state(state);
struct intel_crtc_state *new_crtc_state = intel_atomic_state ?
intel_atomic_get_new_crtc_state(intel_atomic_state, crtc) : NULL;
bool changed = false;
int i = 0;
iter_colorop = plane_state->uapi.color_pipeline;
while (iter_colorop) {
for_each_new_colorop_in_state(state, colorop, new_colorop_state, i) {
if (new_colorop_state->colorop == iter_colorop) {
blob = new_colorop_state->bypass ? NULL : new_colorop_state->data;
intel_colorop = to_intel_colorop(colorop);
changed |= intel_plane_colorop_replace_blob(plane_state,
intel_colorop,
blob);
}
}
iter_colorop = iter_colorop->next;
}
if (new_crtc_state && changed)
new_crtc_state->plane_color_changed = true;
}
void intel_plane_copy_uapi_to_hw_state(struct intel_plane_state *plane_state,
const struct intel_plane_state *from_plane_state,
struct intel_crtc *crtc)
@@ -364,6 +411,8 @@ void intel_plane_copy_uapi_to_hw_state(struct intel_plane_state *plane_state,
plane_state->uapi.src = drm_plane_state_src(&from_plane_state->uapi);
plane_state->uapi.dst = drm_plane_state_dest(&from_plane_state->uapi);
intel_plane_color_copy_uapi_to_hw_state(plane_state, from_plane_state, crtc);
}
void intel_plane_copy_hw_state(struct intel_plane_state *plane_state,