From: Joshua Ashton <jos...@froggi.es>

Need to funnel the color caps through to these functions so it can check
that the hardware is capable.

Signed-off-by: Joshua Ashton <jos...@froggi.es>
---
 .../amd/display/amdgpu_dm/amdgpu_dm_color.c   | 34 ++++++++++++-------
 1 file changed, 21 insertions(+), 13 deletions(-)

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 a034c0c0d383..f0b5f09b9146 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
@@ -336,6 +336,7 @@ static int amdgpu_dm_set_atomic_regamma(struct 
dc_stream_state *stream,
 /**
  * __set_input_tf - calculates the input transfer function based on expected
  * input space.
+ * @caps: dc color capabilities
  * @func: transfer function
  * @lut: lookup table that defines the color space
  * @lut_size: size of respective lut.
@@ -343,7 +344,7 @@ static int amdgpu_dm_set_atomic_regamma(struct 
dc_stream_state *stream,
  * Returns:
  * 0 in case of success. -ENOMEM if fails.
  */
-static int __set_input_tf(struct dc_transfer_func *func,
+static int __set_input_tf(struct dc_color_caps *caps, struct dc_transfer_func 
*func,
                          const struct drm_color_lut *lut, uint32_t lut_size)
 {
        struct dc_gamma *gamma = NULL;
@@ -360,7 +361,7 @@ static int __set_input_tf(struct dc_transfer_func *func,
                __drm_lut_to_dc_gamma(lut, gamma, false);
        }
 
-       res = mod_color_calculate_degamma_params(NULL, func, gamma, gamma != 
NULL);
+       res = mod_color_calculate_degamma_params(caps, func, gamma, gamma != 
NULL);
 
        if (gamma)
                dc_gamma_release(&gamma);
@@ -512,7 +513,7 @@ static int amdgpu_dm_atomic_blend_lut(const struct 
drm_color_lut *blend_lut,
                func_blend->tf = tf;
                func_blend->sdr_ref_white_level = 80; /* hardcoded for now */
 
-               ret = __set_input_tf(func_blend, blend_lut, blend_size);
+               ret = __set_input_tf(NULL, func_blend, blend_lut, blend_size);
        } else {
                func_blend->type = TF_TYPE_BYPASS;
                func_blend->tf = TRANSFER_FUNCTION_LINEAR;
@@ -819,7 +820,8 @@ int amdgpu_dm_update_crtc_color_mgmt(struct dm_crtc_state 
*crtc,
 }
 
 static int map_crtc_degamma_to_dc_plane(struct dm_crtc_state *crtc,
-                                       struct dc_plane_state *dc_plane_state)
+                                       struct dc_plane_state *dc_plane_state,
+                                       struct dc_color_caps *caps)
 {
        const struct drm_color_lut *degamma_lut;
        enum dc_transfer_func_predefined tf = TRANSFER_FUNCTION_SRGB;
@@ -874,7 +876,7 @@ static int map_crtc_degamma_to_dc_plane(struct 
dm_crtc_state *crtc,
                        dc_plane_state->in_transfer_func->tf =
                                TRANSFER_FUNCTION_LINEAR;
 
-               r = __set_input_tf(dc_plane_state->in_transfer_func,
+               r = __set_input_tf(caps, dc_plane_state->in_transfer_func,
                                   degamma_lut, degamma_size);
                if (r)
                        return r;
@@ -887,7 +889,7 @@ static int map_crtc_degamma_to_dc_plane(struct 
dm_crtc_state *crtc,
                dc_plane_state->in_transfer_func->tf = tf;
 
                if (tf != TRANSFER_FUNCTION_SRGB &&
-                   !mod_color_calculate_degamma_params(NULL,
+                   !mod_color_calculate_degamma_params(caps,
                            dc_plane_state->in_transfer_func, NULL, false))
                        return -ENOMEM;
        }
@@ -898,7 +900,8 @@ static int map_crtc_degamma_to_dc_plane(struct 
dm_crtc_state *crtc,
 #ifdef CONFIG_STEAM_DECK
 static int
 __set_dm_plane_degamma(struct drm_plane_state *plane_state,
-                      struct dc_plane_state *dc_plane_state)
+                      struct dc_plane_state *dc_plane_state,
+                      struct dc_color_caps *color_caps)
 {
        struct dm_plane_state *dm_plane_state = to_dm_plane_state(plane_state);
        const struct drm_color_lut *degamma_lut;
@@ -907,6 +910,9 @@ __set_dm_plane_degamma(struct drm_plane_state *plane_state,
        bool has_degamma_lut;
        int ret;
 
+       if (dc_plane_state->ctx && dc_plane_state->ctx->dc)
+               color_caps = &dc_plane_state->ctx->dc->caps.color;
+
        degamma_lut = __extract_blob_lut(dm_plane_state->degamma_lut, 
&degamma_size);
 
        has_degamma_lut = degamma_lut &&
@@ -928,8 +934,8 @@ __set_dm_plane_degamma(struct drm_plane_state *plane_state,
                dc_plane_state->in_transfer_func->type =
                        TF_TYPE_DISTRIBUTED_POINTS;
 
-               ret = __set_input_tf(dc_plane_state->in_transfer_func,
-                                  degamma_lut, degamma_size);
+               ret = __set_input_tf(color_caps, 
dc_plane_state->in_transfer_func,
+                                    degamma_lut, degamma_size);
                if (ret)
                        return ret;
        } else {
@@ -945,7 +951,8 @@ __set_dm_plane_degamma(struct drm_plane_state *plane_state,
 
 static int
 amdgpu_dm_plane_set_color_properties(struct drm_plane_state *plane_state,
-                                    struct dc_plane_state *dc_plane_state)
+                                    struct dc_plane_state *dc_plane_state,
+                                    struct dc_color_caps *color_caps)
 {
        struct dm_plane_state *dm_plane_state = to_dm_plane_state(plane_state);
        enum drm_transfer_function shaper_tf = DRM_TRANSFER_FUNCTION_DEFAULT;
@@ -1014,6 +1021,7 @@ int amdgpu_dm_update_plane_color_mgmt(struct 
dm_crtc_state *crtc,
                                      struct drm_plane_state *plane_state,
                                      struct dc_plane_state *dc_plane_state)
 {
+       struct dc_color_caps *color_caps = NULL;
        bool has_crtc_cm_degamma;
        int ret;
 
@@ -1025,11 +1033,11 @@ int amdgpu_dm_update_plane_color_mgmt(struct 
dm_crtc_state *crtc,
        has_crtc_cm_degamma = (crtc->cm_has_degamma || 
crtc->cm_is_degamma_srgb);
 
 #ifdef CONFIG_STEAM_DECK
-       ret = amdgpu_dm_plane_set_color_properties(plane_state, dc_plane_state);
+       ret = amdgpu_dm_plane_set_color_properties(plane_state, dc_plane_state, 
color_caps);
        if(ret)
                return ret;
 
-       ret = __set_dm_plane_degamma(plane_state, dc_plane_state);
+       ret = __set_dm_plane_degamma(plane_state, dc_plane_state, color_caps);
        if (ret != -EINVAL)
                return ret;
 
@@ -1054,7 +1062,7 @@ int amdgpu_dm_update_plane_color_mgmt(struct 
dm_crtc_state *crtc,
                 * linearize (implicit degamma) from sRGB/BT709 according to
                 * the input space.
                 */
-               ret = map_crtc_degamma_to_dc_plane(crtc, dc_plane_state);
+               ret = map_crtc_degamma_to_dc_plane(crtc, dc_plane_state, 
color_caps);
                if (ret)
                        return ret;
        }
-- 
2.39.2

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