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drm/amd/display: add hyst frames for fixed refresh

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Signed-off-by: Anthony Koo <anthony.koo@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Anthony Koo 2017-06-27 13:27:00 -04:00 committed by Alex Deucher
parent dc0ea00816
commit d09fec0f94
1 changed files with 36 additions and 20 deletions
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56
drivers/gpu/drm/amd/display/modules/freesync/freesync.c
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@ -37,6 +37,9 @@
#define RENDER_TIMES_MAX_COUNT 20
/* Threshold to exit BTR (to avoid frequent enter-exits at the lower limit) */
#define BTR_EXIT_MARGIN 2000
/* Number of consecutive frames to check before entering/exiting fixed refresh*/
#define FIXED_REFRESH_ENTER_FRAME_COUNT 5
#define FIXED_REFRESH_EXIT_FRAME_COUNT 5
#define FREESYNC_REGISTRY_NAME "freesync_v1"
@ -72,8 +75,9 @@ struct below_the_range {
};
struct fixed_refresh {
bool fixed_refresh_active;
bool program_fixed_refresh;
bool fixed_active;
bool program_fixed;
unsigned int frame_counter;
};
struct freesync_range {
@ -168,8 +172,8 @@ struct mod_freesync *mod_freesync_create(struct dc *dc)
/* Create initial module folder in registry for freesync enable data */
flag.save_per_edid = true;
flag.save_per_link = false;
dm_write_persistent_data(core_dc->ctx, NULL, FREESYNC_REGISTRY_NAME, NULL, NULL,
0, &flag);
dm_write_persistent_data(core_dc->ctx, NULL, FREESYNC_REGISTRY_NAME,
NULL, NULL, 0, &flag);
flag.save_per_edid = false;
flag.save_per_link = false;
if (dm_read_persistent_data(core_dc->ctx, NULL, NULL,
@ -422,7 +426,7 @@ static void calc_freesync_range(struct core_freesync *core_freesync,
min_frame_duration_in_ns) * stream->timing.pix_clk_khz),
stream->timing.h_total), 1000000);
/* In case of 4k free sync monitor, vmin or vmax cannot be less than vtotal */
/* vmin/vmax cannot be less than vtotal */
if (state->freesync_range.vmin < vtotal) {
/* Error of 1 is permissible */
ASSERT((state->freesync_range.vmin + 1) >= vtotal);
@ -553,8 +557,8 @@ static void reset_freesync_state_variables(struct freesync_state* state)
state->btr.inserted_frame_duration_in_us = 0;
state->btr.program_btr = false;
state->fixed_refresh.fixed_refresh_active = false;
state->fixed_refresh.program_fixed_refresh = false;
state->fixed_refresh.fixed_active = false;
state->fixed_refresh.program_fixed = false;
}
/*
* Sets freesync mode on a stream depending on current freesync state.
@ -594,7 +598,7 @@ static bool set_freesync_on_streams(struct core_freesync *core_freesync,
if (core_freesync->map[map_index].user_enable.
enable_for_gaming == true &&
state->fullscreen == true &&
state->fixed_refresh.fixed_refresh_active == false) {
state->fixed_refresh.fixed_active == false) {
/* Enable freesync */
v_total_min = state->freesync_range.vmin;
@ -1240,29 +1244,39 @@ static void update_timestamps(struct core_freesync *core_freesync,
state->btr.frame_counter = 0;
/* Exit Fixed Refresh mode */
} else if (state->fixed_refresh.fixed_refresh_active) {
} else if (state->fixed_refresh.fixed_active) {
state->fixed_refresh.program_fixed_refresh = true;
state->fixed_refresh.fixed_refresh_active = false;
state->fixed_refresh.frame_counter++;
if (state->fixed_refresh.frame_counter >
FIXED_REFRESH_EXIT_FRAME_COUNT) {
state->fixed_refresh.frame_counter = 0;
state->fixed_refresh.program_fixed = true;
state->fixed_refresh.fixed_active = false;
}
}
} else if (last_render_time_in_us > state->time.max_render_time_in_us) {
/* Enter Below the Range */
if (!state->btr.btr_active &&
core_freesync->map[map_index].caps->btr_supported) {
core_freesync->map[map_index].caps->btr_supported) {
state->btr.program_btr = true;
state->btr.btr_active = true;
/* Enter Fixed Refresh mode */
} else if (!state->fixed_refresh.fixed_refresh_active &&
} else if (!state->fixed_refresh.fixed_active &&
!core_freesync->map[map_index].caps->btr_supported) {
state->fixed_refresh.program_fixed_refresh = true;
state->fixed_refresh.fixed_refresh_active = true;
state->fixed_refresh.frame_counter++;
if (state->fixed_refresh.frame_counter >
FIXED_REFRESH_ENTER_FRAME_COUNT) {
state->fixed_refresh.frame_counter = 0;
state->fixed_refresh.program_fixed = true;
state->fixed_refresh.fixed_active = true;
}
}
}
@ -1316,7 +1330,8 @@ static void apply_below_the_range(struct core_freesync *core_freesync,
frame_time_in_us = last_render_time_in_us /
mid_point_frames_ceil;
delta_from_mid_point_in_us_1 = (state->btr.mid_point_in_us >
delta_from_mid_point_in_us_1 =
(state->btr.mid_point_in_us >
frame_time_in_us) ?
(state->btr.mid_point_in_us - frame_time_in_us):
(frame_time_in_us - state->btr.mid_point_in_us);
@ -1332,7 +1347,8 @@ static void apply_below_the_range(struct core_freesync *core_freesync,
frame_time_in_us = last_render_time_in_us /
mid_point_frames_floor;
delta_from_mid_point_in_us_2 = (state->btr.mid_point_in_us >
delta_from_mid_point_in_us_2 =
(state->btr.mid_point_in_us >
frame_time_in_us) ?
(state->btr.mid_point_in_us - frame_time_in_us):
(frame_time_in_us - state->btr.mid_point_in_us);
@ -1374,15 +1390,15 @@ static void apply_fixed_refresh(struct core_freesync *core_freesync,
unsigned int vmin = 0, vmax = 0;
struct freesync_state *state = &core_freesync->map[map_index].state;
if (!state->fixed_refresh.program_fixed_refresh)
if (!state->fixed_refresh.program_fixed)
return;
state->fixed_refresh.program_fixed_refresh = false;
state->fixed_refresh.program_fixed = false;
/* Program Fixed Refresh */
/* Fixed Refresh set to "not active" so disengage */
if (!state->fixed_refresh.fixed_refresh_active) {
if (!state->fixed_refresh.fixed_active) {
set_freesync_on_streams(core_freesync, &stream, 1);
/* Fixed Refresh set to "active" so engage (fix to max) */