drm/amd/display: Move fixpt_from_s3132 to amdgpu_dm

Other environments don't like the unary minus operator on
an unsigned value.

Signed-off-by: Harry Wentland <[e-mail]>
Acked-by: Alex Deucher <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c

···
 	setup_x_points_distribution();
 }
 
+static inline struct fixed31_32 amdgpu_dm_fixpt_from_s3132(__u64 x)
+{
+	struct fixed31_32 val;
+
+	/* If negative, convert to 2's complement. */
+	if (x & (1ULL << 63))
+		x = -(x & ~(1ULL << 63));
+
+	val.value = x;
+	return val;
+}
+
 #ifdef AMD_PRIVATE_COLOR
 /* Pre-defined Transfer Functions (TF)
  *
···
 		}
 
 		/* gamut_remap_matrix[i] = ctm[i - floor(i/4)] */
-		matrix[i] = dc_fixpt_from_s3132(ctm->matrix[i - (i / 4)]);
+		matrix[i] = amdgpu_dm_fixpt_from_s3132(ctm->matrix[i - (i / 4)]);
 	}
 }
 
···
 	 */
 	for (i = 0; i < 12; i++) {
 		/* gamut_remap_matrix[i] = ctm[i - floor(i/4)] */
-		matrix[i] = dc_fixpt_from_s3132(ctm->matrix[i]);
+		matrix[i] = amdgpu_dm_fixpt_from_s3132(ctm->matrix[i]);
 	}
 }
 
···
 	uint32_t shaper_size, lut3d_size, blend_size;
 	int ret;
 
-	dc_plane_state->hdr_mult = dc_fixpt_from_s3132(dm_plane_state->hdr_mult);
+	dc_plane_state->hdr_mult = amdgpu_dm_fixpt_from_s3132(dm_plane_state->hdr_mult);
 
 	shaper_lut = __extract_blob_lut(dm_plane_state->shaper_lut, &shaper_size);
 	shaper_size = shaper_lut != NULL ? shaper_size : 0;

drivers/gpu/drm/amd/display/include/fixed31_32.h

···
 static const struct fixed31_32 dc_fixpt_half = { 0x80000000LL };
 static const struct fixed31_32 dc_fixpt_one = { 0x100000000LL };
 
-static inline struct fixed31_32 dc_fixpt_from_s3132(__u64 x)
-{
-	struct fixed31_32 val;
-
-	/* If negative, convert to 2's complement. */
-	if (x & (1ULL << 63))
-		x = -(x & ~(1ULL << 63));
-
-	val.value = x;
-	return val;
-}
-
 /*
  * @brief
  * Initialization routines