mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-13 22:25:03 +00:00
Code Issues Releases Wiki Activity

drm/amd/display: Allow option to use worst-case watermark

Browse source 
use worse case watermark (consider both DCC and VM)
to keep golden consistent regardless of DCC

Signed-off-by: Tony Cheng <tony.cheng@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Tony Cheng 2018-06-08 17:36:26 -04:00 committed by Alex Deucher
parent 1eeedbcc20
commit f3efec54ed
2 changed files with 23 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

23
drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c
View file

@ -31,6 +31,8 @@
#include "resource.h"
#include "dcn10/dcn10_resource.h"
#include "dcn10/dcn10_hubbub.h"
#include "dcn_calc_math.h"
#define DC_LOGGER \
@ -889,7 +891,26 @@ bool dcn_validate_bandwidth(
ASSERT(pipe->plane_res.scl_data.ratios.vert.value != dc_fixpt_one.value
|| v->scaler_rec_out_width[input_idx] == v->viewport_height[input_idx]);
}
v->dcc_enable[input_idx] = pipe->plane_state->dcc.enable ? dcn_bw_yes : dcn_bw_no;
if (dc->debug.optimized_watermark) {
/*
* this method requires us to always re-calculate watermark when dcc change
* between flip.
*/
v->dcc_enable[input_idx] = pipe->plane_state->dcc.enable ? dcn_bw_yes : dcn_bw_no;
} else {
/*
* allow us to disable dcc on the fly without re-calculating WM
*
* extra overhead for DCC is quite small. for 1080p WM without
* DCC is only 0.417us lower (urgent goes from 6.979us to 6.562us)
*/
unsigned int bpe;
v->dcc_enable[input_idx] = dc->res_pool->hubbub->funcs->dcc_support_pixel_format(
pipe->plane_state->format, &bpe) ? dcn_bw_yes : dcn_bw_no;
}
v->source_pixel_format[input_idx] = tl_pixel_format_to_bw_defs(
pipe->plane_state->format);
v->source_surface_mode[input_idx] = tl_sw_mode_to_bw_defs(

1
drivers/gpu/drm/amd/display/dc/dc.h
View file

@ -233,6 +233,7 @@ struct dc_debug {
int urgent_latency_ns;
int percent_of_ideal_drambw;
int dram_clock_change_latency_ns;
bool optimized_watermark;
int always_scale;
bool disable_pplib_clock_request;
bool disable_clock_gate;