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Commit 0002d3ac authored by Dmytro Laktyushkin's avatar Dmytro Laktyushkin Committed by Alex Deucher
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drm/amd/display: truncate scaling ratios and inits to 19 bit precision 



Signed-off-by: default avatarDmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: default avatarTony Cheng <Tony.Cheng@amd.com>
Acked-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent ab9c2062

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

+17 −8
Original line number Original line Diff line number Diff line
@@ -652,6 +652,14 @@ static void calculate_scaling_ratios(struct pipe_ctx *pipe_ctx) 
		pipe_ctx->plane_res.scl_data.ratios.horz_c.value /= 2;

		pipe_ctx->plane_res.scl_data.ratios.horz_c.value /= 2;

		pipe_ctx->plane_res.scl_data.ratios.vert_c.value /= 2;

		pipe_ctx->plane_res.scl_data.ratios.vert_c.value /= 2;

	}

	}

	pipe_ctx->plane_res.scl_data.ratios.horz = dc_fixpt_truncate(

			pipe_ctx->plane_res.scl_data.ratios.horz, 19);

	pipe_ctx->plane_res.scl_data.ratios.vert = dc_fixpt_truncate(

			pipe_ctx->plane_res.scl_data.ratios.vert, 19);

	pipe_ctx->plane_res.scl_data.ratios.horz_c = dc_fixpt_truncate(

			pipe_ctx->plane_res.scl_data.ratios.horz_c, 19);

	pipe_ctx->plane_res.scl_data.ratios.vert_c = dc_fixpt_truncate(

			pipe_ctx->plane_res.scl_data.ratios.vert_c, 19);

}

}





static void calculate_inits_and_adj_vp(struct pipe_ctx *pipe_ctx, struct view *recout_skip)

static void calculate_inits_and_adj_vp(struct pipe_ctx *pipe_ctx, struct view *recout_skip)
@@ -688,17 +696,18 @@ static void calculate_inits_and_adj_vp(struct pipe_ctx *pipe_ctx, struct view *r 
	 * 	init_bot = init + scaling_ratio

	 * 	init_bot = init + scaling_ratio

	 * 	init_c = init + truncated_vp_c_offset(from calculate viewport)

	 * 	init_c = init + truncated_vp_c_offset(from calculate viewport)

	 */

	 */

	data->inits.h = dc_fixpt_div_int(

	data->inits.h = dc_fixpt_truncate(dc_fixpt_div_int(

			dc_fixpt_add_int(data->ratios.horz, data->taps.h_taps + 1), 2);

			dc_fixpt_add_int(data->ratios.horz, data->taps.h_taps + 1), 2), 19);





	data->inits.h_c = dc_fixpt_add(data->inits.h_c, dc_fixpt_div_int(

	data->inits.h_c = dc_fixpt_truncate(dc_fixpt_add(data->inits.h_c, dc_fixpt_div_int(

			dc_fixpt_add_int(data->ratios.horz_c, data->taps.h_taps_c + 1), 2));

			dc_fixpt_add_int(data->ratios.horz_c, data->taps.h_taps_c + 1), 2)), 19);





	data->inits.v = dc_fixpt_div_int(

	data->inits.v = dc_fixpt_truncate(dc_fixpt_div_int(

			dc_fixpt_add_int(data->ratios.vert, data->taps.v_taps + 1), 2);

			dc_fixpt_add_int(data->ratios.vert, data->taps.v_taps + 1), 2), 19);



	data->inits.v_c = dc_fixpt_truncate(dc_fixpt_add(data->inits.v_c, dc_fixpt_div_int(

			dc_fixpt_add_int(data->ratios.vert_c, data->taps.v_taps_c + 1), 2)), 19);





	data->inits.v_c = dc_fixpt_add(data->inits.v_c, dc_fixpt_div_int(

			dc_fixpt_add_int(data->ratios.vert_c, data->taps.v_taps_c + 1), 2));









	/* Adjust for viewport end clip-off */

	/* Adjust for viewport end clip-off */