drm/amd/display: Calculate CRC on specific frame region

[why]
Currently, we only support calculating CRC on whole frame.
We want to extend the capability to calculate CRC on
specific frame area.

[how]
Calculate CRC on specific area once it's specified from the
input parameter.
Signed-off-by: Wayne Lin <Wayne.Lin@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -115,7 +115,7 @@ int amdgpu_dm_crtc_configure_crc_source(struct drm_crtc *crtc,
 	/* Enable CRTC CRC generation if necessary. */
 	if (dm_is_crc_source_crtc(source)) {
 		if (!dc_stream_configure_crc(stream_state->ctx->dc,
-					     stream_state, enable, enable)) {
+					     stream_state, NULL, enable, enable)) {
 			ret = -EINVAL;
 			goto unlock;
 		}

drivers/gpu/drm/amd/display/dc/core/dc.c

@@ -346,7 +346,7 @@ bool dc_stream_get_crtc_position(struct dc *dc,
  * calculate the crc.
  */
 bool dc_stream_configure_crc(struct dc *dc, struct dc_stream_state *stream,
-			     bool enable, bool continuous)
+			     struct crc_params *crc_window, bool enable, bool continuous)
 {
 	int i;
 	struct pipe_ctx *pipe;
@@ -362,7 +362,7 @@ bool dc_stream_configure_crc(struct dc *dc, struct dc_stream_state *stream,
 	if (i == MAX_PIPES)
 		return false;
 
-	/* Always capture the full frame */
+	/* By default, capture the full frame */
 	param.windowa_x_start = 0;
 	param.windowa_y_start = 0;
 	param.windowa_x_end = pipe->stream->timing.h_addressable;
@@ -372,6 +372,17 @@ bool dc_stream_configure_crc(struct dc *dc, struct dc_stream_state *stream,
 	param.windowb_x_end = pipe->stream->timing.h_addressable;
 	param.windowb_y_end = pipe->stream->timing.v_addressable;
 
+	if (crc_window) {
+		param.windowa_x_start = crc_window->windowa_x_start;
+		param.windowa_y_start = crc_window->windowa_y_start;
+		param.windowa_x_end = crc_window->windowa_x_end;
+		param.windowa_y_end = crc_window->windowa_y_end;
+		param.windowb_x_start = crc_window->windowb_x_start;
+		param.windowb_y_start = crc_window->windowb_y_start;
+		param.windowb_x_end = crc_window->windowb_x_end;
+		param.windowb_y_end = crc_window->windowb_y_end;
+	}
+
 	param.dsc_mode = pipe->stream->timing.flags.DSC ? 1:0;
 	param.odm_mode = pipe->next_odm_pipe ? 1:0;
 

drivers/gpu/drm/amd/display/dc/dc_stream.h

@@ -457,6 +457,7 @@ bool dc_stream_get_crtc_position(struct dc *dc,
 
 bool dc_stream_configure_crc(struct dc *dc,
 			     struct dc_stream_state *stream,
+			     struct crc_params *crc_window,
 			     bool enable,
 			     bool continuous);