[Intel-gfx] [PATCH 2/2] amd/amdgpu_dm: Verify Gamma and Degamma LUT sizes using DRM Core check

[Mark Yacoub]

From: Mark Yacoub <markyac...@google.com>

[Why]
drm_atomic_helper_check_crtc now verifies both legacy and non-legacy LUT
sizes. There is no need to check it within amdgpu_dm_atomic_check.

[How]
Remove the local call to verify LUT sizes and use DRM Core function
instead.

Tested on ChromeOS Zork.

v1:
Remove amdgpu_dm_verify_lut_sizes everywhere.

Signed-off-by: Mark Yacoub <markyac...@chromium.org>
---
 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c |  8 ++---
 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h |  1 -
 .../amd/display/amdgpu_dm/amdgpu_dm_color.c   | 35 -------------------
 3 files changed, 4 insertions(+), 40 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 f74663b6b046e..47f8de1cfc3a5 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -10244,6 +10244,10 @@ static int amdgpu_dm_atomic_check(struct drm_device 
*dev,
                }
        }
 #endif
+       ret = drm_atomic_helper_check_crtcs(state);
+       if (ret)
+               return ret;
+
        for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, 
new_crtc_state, i) {
                dm_old_crtc_state = to_dm_crtc_state(old_crtc_state);
 
@@ -10253,10 +10257,6 @@ static int amdgpu_dm_atomic_check(struct drm_device 
*dev,
                        dm_old_crtc_state->dsc_force_changed == false)
                        continue;
 
-               ret = amdgpu_dm_verify_lut_sizes(new_crtc_state);
-               if (ret)
-                       goto fail;
-
                if (!new_crtc_state->enable)
                        continue;
 
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h 
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
index fcb9c4a629c32..22730e5542092 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
@@ -617,7 +617,6 @@ void amdgpu_dm_trigger_timing_sync(struct drm_device *dev);
 #define MAX_COLOR_LEGACY_LUT_ENTRIES 256
 
 void amdgpu_dm_init_color_mod(void);
-int amdgpu_dm_verify_lut_sizes(const struct drm_crtc_state *crtc_state);
 int amdgpu_dm_update_crtc_color_mgmt(struct dm_crtc_state *crtc);
 int amdgpu_dm_update_plane_color_mgmt(struct dm_crtc_state *crtc,
                                      struct dc_plane_state *dc_plane_state);
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c 
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c
index a022e5bb30a5c..319f8a8a89835 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c
@@ -284,37 +284,6 @@ static int __set_input_tf(struct dc_transfer_func *func,
        return res ? 0 : -ENOMEM;
 }
 
-/**
- * Verifies that the Degamma and Gamma LUTs attached to the |crtc_state| are of
- * the expected size.
- * Returns 0 on success.
- */
-int amdgpu_dm_verify_lut_sizes(const struct drm_crtc_state *crtc_state)
-{
-       const struct drm_color_lut *lut = NULL;
-       uint32_t size = 0;
-
-       lut = __extract_blob_lut(crtc_state->degamma_lut, &size);
-       if (lut && size != MAX_COLOR_LUT_ENTRIES) {
-               DRM_DEBUG_DRIVER(
-                       "Invalid Degamma LUT size. Should be %u but got %u.\n",
-                       MAX_COLOR_LUT_ENTRIES, size);
-               return -EINVAL;
-       }
-
-       lut = __extract_blob_lut(crtc_state->gamma_lut, &size);
-       if (lut && size != MAX_COLOR_LUT_ENTRIES &&
-           size != MAX_COLOR_LEGACY_LUT_ENTRIES) {
-               DRM_DEBUG_DRIVER(
-                       "Invalid Gamma LUT size. Should be %u (or %u for 
legacy) but got %u.\n",
-                       MAX_COLOR_LUT_ENTRIES, MAX_COLOR_LEGACY_LUT_ENTRIES,
-                       size);
-               return -EINVAL;
-       }
-
-       return 0;
-}
-
 /**
  * amdgpu_dm_update_crtc_color_mgmt: Maps DRM color management to DC stream.
  * @crtc: amdgpu_dm crtc state
@@ -348,10 +317,6 @@ int amdgpu_dm_update_crtc_color_mgmt(struct dm_crtc_state 
*crtc)
        bool is_legacy;
        int r;
 
-       r = amdgpu_dm_verify_lut_sizes(&crtc->base);
-       if (r)
-               return r;
-
        degamma_lut = __extract_blob_lut(crtc->base.degamma_lut, &degamma_size);
        regamma_lut = __extract_blob_lut(crtc->base.gamma_lut, &regamma_size);
 
-- 
2.33.0.882.g93a45727a2-goog