r600/uvd: stop advertising MPEG4 on UVD 2.x chips v2

That is just not supported by the hardware.

v2: fix compare

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>

src/gallium/drivers/r600/r600_pipe.c

@@ -1291,7 +1291,7 @@ struct pipe_screen *r600_screen_create(struct radeon_winsys *ws)
 	rscreen->screen.get_driver_query_info = r600_get_driver_query_info;
 
 	if (rscreen->info.has_uvd) {
-		rscreen->screen.get_video_param = ruvd_get_video_param;
+		rscreen->screen.get_video_param = r600_uvd_get_video_param;
 		rscreen->screen.is_video_format_supported = ruvd_is_format_supported;
 	} else {
 		rscreen->screen.get_video_param = r600_get_video_param;

src/gallium/drivers/r600/r600_pipe.h

@@ -902,6 +902,9 @@ struct pipe_video_decoder *r600_uvd_create_decoder(struct pipe_context *context,
 struct pipe_video_buffer *r600_video_buffer_create(struct pipe_context *pipe,
 						   const struct pipe_video_buffer *tmpl);
 
+int r600_uvd_get_video_param(struct pipe_screen *screen,
+			     enum pipe_video_profile profile,
+			     enum pipe_video_cap param);
 
 /*
  * Helpers for building command buffers

src/gallium/drivers/r600/r600_uvd.c

@@ -177,3 +177,17 @@ struct pipe_video_decoder *r600_uvd_create_decoder(struct pipe_context *context,
 			 	   width, height, max_references, expect_chunked_decode,
 				   ctx->ws, r600_uvd_set_dtb);
 }
+
+int r600_uvd_get_video_param(struct pipe_screen *screen,
+			     enum pipe_video_profile profile,
+			     enum pipe_video_cap param)
+{
+	struct r600_screen *rscreen = (struct r600_screen *)screen;
+
+	/* No support for MPEG4 on UVD 2.x */
+	if (param == PIPE_VIDEO_CAP_SUPPORTED && rscreen->family < CHIP_CEDAR &&
+	    u_reduce_video_profile(profile) == PIPE_VIDEO_CODEC_MPEG4)
+		return false;
+
+	return ruvd_get_video_param(screen, profile, param);
+}

src/gallium/drivers/radeon/radeon_uvd.c

@@ -1076,7 +1076,6 @@ int ruvd_get_video_param(struct pipe_screen *screen,
 		switch (u_reduce_video_profile(profile)) {
 		case PIPE_VIDEO_CODEC_MPEG12:
 		case PIPE_VIDEO_CODEC_MPEG4:
-			/* TODO not all hw families support MPEG4 */
 		case PIPE_VIDEO_CODEC_MPEG4_AVC:
 		case PIPE_VIDEO_CODEC_VC1:
 			return true;