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Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/basics/dc_common.c')
-rw-r--r--drivers/gpu/drm/amd/display/dc/basics/dc_common.c101
1 files changed, 101 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/basics/dc_common.c b/drivers/gpu/drm/amd/display/dc/basics/dc_common.c
new file mode 100644
index 000000000000..b2fc4f8e6482
--- /dev/null
+++ b/drivers/gpu/drm/amd/display/dc/basics/dc_common.c
@@ -0,0 +1,101 @@
+/*
+ * Copyright 2012-15 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+#include "core_types.h"
+#include "dc_common.h"
+#include "basics/conversion.h"
+
+bool is_rgb_cspace(enum dc_color_space output_color_space)
+{
+ switch (output_color_space) {
+ case COLOR_SPACE_SRGB:
+ case COLOR_SPACE_SRGB_LIMITED:
+ case COLOR_SPACE_2020_RGB_FULLRANGE:
+ case COLOR_SPACE_2020_RGB_LIMITEDRANGE:
+ case COLOR_SPACE_ADOBERGB:
+ return true;
+ case COLOR_SPACE_YCBCR601:
+ case COLOR_SPACE_YCBCR709:
+ case COLOR_SPACE_YCBCR601_LIMITED:
+ case COLOR_SPACE_YCBCR709_LIMITED:
+ case COLOR_SPACE_2020_YCBCR:
+ return false;
+ default:
+ /* Add a case to switch */
+ BREAK_TO_DEBUGGER();
+ return false;
+ }
+}
+
+bool is_lower_pipe_tree_visible(struct pipe_ctx *pipe_ctx)
+{
+ if (pipe_ctx->plane_state && pipe_ctx->plane_state->visible)
+ return true;
+ if (pipe_ctx->bottom_pipe && is_lower_pipe_tree_visible(pipe_ctx->bottom_pipe))
+ return true;
+ return false;
+}
+
+bool is_upper_pipe_tree_visible(struct pipe_ctx *pipe_ctx)
+{
+ if (pipe_ctx->plane_state && pipe_ctx->plane_state->visible)
+ return true;
+ if (pipe_ctx->top_pipe && is_upper_pipe_tree_visible(pipe_ctx->top_pipe))
+ return true;
+ return false;
+}
+
+bool is_pipe_tree_visible(struct pipe_ctx *pipe_ctx)
+{
+ if (pipe_ctx->plane_state && pipe_ctx->plane_state->visible)
+ return true;
+ if (pipe_ctx->top_pipe && is_upper_pipe_tree_visible(pipe_ctx->top_pipe))
+ return true;
+ if (pipe_ctx->bottom_pipe && is_lower_pipe_tree_visible(pipe_ctx->bottom_pipe))
+ return true;
+ return false;
+}
+
+void build_prescale_params(struct dc_bias_and_scale *bias_and_scale,
+ const struct dc_plane_state *plane_state)
+{
+ if (plane_state->format >= SURFACE_PIXEL_FORMAT_VIDEO_BEGIN
+ && plane_state->format != SURFACE_PIXEL_FORMAT_INVALID
+ && plane_state->input_csc_color_matrix.enable_adjustment
+ && plane_state->coeff_reduction_factor.value != 0) {
+ bias_and_scale->scale_blue = fixed_point_to_int_frac(
+ dc_fixpt_mul(plane_state->coeff_reduction_factor,
+ dc_fixpt_from_fraction(256, 255)),
+ 2,
+ 13);
+ bias_and_scale->scale_red = bias_and_scale->scale_blue;
+ bias_and_scale->scale_green = bias_and_scale->scale_blue;
+ } else {
+ bias_and_scale->scale_blue = 0x2000;
+ bias_and_scale->scale_red = 0x2000;
+ bias_and_scale->scale_green = 0x2000;
+ }
+}
+