/*
* Copyright 2016 - 2023 Advanced Micro Devices , Inc .
*
* Permission is hereby granted , free of charge , to any person obtaining a
* copy of this software and associated documentation files ( the " Software " ) ,
* to deal in the Software without restriction , including without limitation
* the rights to use , copy , modify , merge , publish , distribute , sublicense ,
* and / or sell copies of the Software , and to permit persons to whom the
* Software is furnished to do so , subject to the following conditions :
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software .
*
* THE SOFTWARE IS PROVIDED " AS IS " , WITHOUT WARRANTY OF ANY KIND , EXPRESS OR
* IMPLIED , INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY ,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT . IN NO EVENT SHALL
* THE COPYRIGHT HOLDER ( S ) OR AUTHOR ( S ) BE LIABLE FOR ANY CLAIM , DAMAGES OR
* OTHER LIABILITY , WHETHER IN AN ACTION OF CONTRACT , TORT OR OTHERWISE ,
* ARISING FROM , OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE .
*
* Authors : AMD
*
*/
#include "dm_services.h"
#include "dc.h"
#include "mod_freesync.h"
#include "core_types.h"
#define MOD_FREESYNC_MAX_CONCURRENT_STREAMS 32
#define MIN_REFRESH_RANGE 10
/* Refresh rate ramp at a fixed rate of 65 Hz/second */
#define STATIC_SCREEN_RAMP_DELTA_REFRESH_RATE_PER_FRAME ((1000 / 60 ) * 65 )
/* Number of elements in the render times cache array */
#define RENDER_TIMES_MAX_COUNT 10
/* Threshold to exit/exit BTR (to avoid frequent enter-exits at the lower limit) */
#define BTR_MAX_MARGIN 2500
/* Threshold to change BTR multiplier (to avoid frequent changes) */
#define BTR_DRIFT_MARGIN 2000
/* Threshold to exit fixed refresh rate */
#define FIXED_REFRESH_EXIT_MARGIN_IN_HZ 1
/* Number of consecutive frames to check before entering/exiting fixed refresh */
#define FIXED_REFRESH_ENTER_FRAME_COUNT 5
#define FIXED_REFRESH_EXIT_FRAME_COUNT 10
/* Flip interval workaround constants */
#define VSYNCS_BETWEEN_FLIP_THRESHOLD 2
#define FREESYNC_CONSEC_FLIP_AFTER_VSYNC 5
#define FREESYNC_VSYNC_TO_FLIP_DELTA_IN_US 500
#define MICRO_HZ_TO_HZ(x) (x / 1000000 )
struct core_freesync {
struct mod_freesync public ;
struct dc *dc;
};
#define MOD_FREESYNC_TO_CORE(mod_freesync)\
container_of(mod_freesync, struct core_freesync, public )
struct mod_freesync *mod_freesync_create(struct dc *dc)
{
struct core_freesync *core_freesync =
kzalloc(sizeof (struct core_freesync), GFP_KERNEL);
if (core_freesync == NULL)
goto fail_alloc_context;
if (dc == NULL)
goto fail_construct;
core_freesync->dc = dc;
return &core_freesync->public ;
fail_construct:
kfree(core_freesync);
fail_alloc_context:
return NULL;
}
void mod_freesync_destroy(struct mod_freesync *mod_freesync)
{
struct core_freesync *core_freesync = NULL;
if (mod_freesync == NULL)
return ;
core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
kfree(core_freesync);
}
#if 0 /* Unused currently */
static unsigned int calc_refresh_in_uhz_from_duration(
unsigned int duration_in_ns)
{
unsigned int refresh_in_uhz =
((unsigned int )(div64_u64((1000000000 ULL * 1000000 ),
duration_in_ns)));
return refresh_in_uhz;
}
#endif
static unsigned int calc_duration_in_us_from_refresh_in_uhz(
unsigned int refresh_in_uhz)
{
unsigned int duration_in_us =
((unsigned int )(div64_u64((1000000000 ULL * 1000 ),
refresh_in_uhz)));
return duration_in_us;
}
static unsigned int calc_duration_in_us_from_v_total(
const struct dc_stream_state *stream,
const struct mod_vrr_params *in_vrr,
unsigned int v_total)
{
unsigned int duration_in_us =
(unsigned int )(div64_u64(((unsigned long long )(v_total)
* 10000 ) * stream->timing.h_total,
stream->timing.pix_clk_100hz));
return duration_in_us;
}
static unsigned int calc_max_hardware_v_total(const struct dc_stream_state *stream)
{
unsigned int max_hw_v_total = stream->ctx->dc->caps.max_v_total;
if (stream->ctx->dc->caps.vtotal_limited_by_fp2) {
max_hw_v_total -= stream->timing.v_front_porch + 1 ;
}
return max_hw_v_total;
}
unsigned int mod_freesync_calc_v_total_from_refresh(
const struct dc_stream_state *stream,
unsigned int refresh_in_uhz)
{
unsigned int v_total;
unsigned int frame_duration_in_ns;
if (refresh_in_uhz == 0 )
return stream->timing.v_total;
frame_duration_in_ns =
((unsigned int )(div64_u64((1000000000 ULL * 1000000 ),
refresh_in_uhz)));
if (refresh_in_uhz <= stream->timing.min_refresh_in_uhz) {
/* When the target refresh rate is the minimum panel refresh rate,
* round down the vtotal value to avoid stretching vblank over
* panel ' s vtotal boundary .
*/
v_total = div64_u64(div64_u64(((unsigned long long )(
frame_duration_in_ns) * (stream->timing.pix_clk_100hz / 10 )),
stream->timing.h_total), 1000000 );
} else if (refresh_in_uhz >= stream->timing.max_refresh_in_uhz) {
/* When the target refresh rate is the maximum panel refresh rate
* round up the vtotal value to prevent off - by - one error causing
* v_total_min to be below the panel ' s lower bound
*/
v_total = div64_u64(div64_u64(((unsigned long long )(
frame_duration_in_ns) * (stream->timing.pix_clk_100hz / 10 )),
stream->timing.h_total) + (1000000 - 1 ), 1000000 );
} else {
v_total = div64_u64(div64_u64(((unsigned long long )(
frame_duration_in_ns) * (stream->timing.pix_clk_100hz / 10 )),
stream->timing.h_total) + 500000 , 1000000 );
}
/* v_total cannot be less than nominal */
if (v_total < stream->timing.v_total) {
ASSERT(v_total < stream->timing.v_total);
v_total = stream->timing.v_total;
}
return v_total;
}
static unsigned int calc_v_total_from_duration(
const struct dc_stream_state *stream,
const struct mod_vrr_params *vrr,
unsigned int duration_in_us)
{
unsigned int v_total = 0 ;
if (duration_in_us < vrr->min_duration_in_us)
duration_in_us = vrr->min_duration_in_us;
if (duration_in_us > vrr->max_duration_in_us)
duration_in_us = vrr->max_duration_in_us;
if (dc_is_hdmi_signal(stream->signal)) { // change for HDMI to comply with spec
uint32_t h_total_up_scaled;
h_total_up_scaled = stream->timing.h_total * 10000 ;
v_total = div_u64((unsigned long long )duration_in_us
* stream->timing.pix_clk_100hz + (h_total_up_scaled - 1 ),
h_total_up_scaled); //ceiling for MMax and MMin for MVRR
} else {
v_total = div64_u64(div64_u64(((unsigned long long )(
duration_in_us) * (stream->timing.pix_clk_100hz / 10 )),
stream->timing.h_total), 1000 );
}
/* v_total cannot be less than nominal */
if (v_total < stream->timing.v_total) {
ASSERT(v_total < stream->timing.v_total);
v_total = stream->timing.v_total;
}
return v_total;
}
static void update_v_total_for_static_ramp(
struct core_freesync *core_freesync,
const struct dc_stream_state *stream,
struct mod_vrr_params *in_out_vrr)
{
unsigned int v_total = 0 ;
unsigned int current_duration_in_us =
calc_duration_in_us_from_v_total(
stream, in_out_vrr,
in_out_vrr->adjust.v_total_max);
unsigned int target_duration_in_us =
calc_duration_in_us_from_refresh_in_uhz(
in_out_vrr->fixed.target_refresh_in_uhz);
bool ramp_direction_is_up = (current_duration_in_us >
target_duration_in_us) ? true : false ;
/* Calculate ratio between new and current frame duration with 3 digit */
unsigned int frame_duration_ratio = div64_u64(1000000 ,
(1000 + div64_u64(((unsigned long long )(
STATIC_SCREEN_RAMP_DELTA_REFRESH_RATE_PER_FRAME) *
current_duration_in_us),
1000000 )));
/* Calculate delta between new and current frame duration in us */
unsigned int frame_duration_delta = div64_u64(((unsigned long long )(
current_duration_in_us) *
(1000 - frame_duration_ratio)), 1000 );
/* Adjust frame duration delta based on ratio between current and
* standard frame duration ( frame duration at 60 Hz refresh rate ) .
*/
unsigned int ramp_rate_interpolated = div64_u64(((unsigned long long )(
frame_duration_delta) * current_duration_in_us), 16666 );
/* Going to a higher refresh rate (lower frame duration) */
if (ramp_direction_is_up) {
/* Reduce frame duration */
current_duration_in_us -= ramp_rate_interpolated;
/* Adjust for frame duration below min */
if (current_duration_in_us <= target_duration_in_us) {
in_out_vrr->fixed.ramping_active = false ;
in_out_vrr->fixed.ramping_done = true ;
current_duration_in_us =
calc_duration_in_us_from_refresh_in_uhz(
in_out_vrr->fixed.target_refresh_in_uhz);
}
/* Going to a lower refresh rate (larger frame duration) */
} else {
/* Increase frame duration */
current_duration_in_us += ramp_rate_interpolated;
/* Adjust for frame duration above max */
if (current_duration_in_us >= target_duration_in_us) {
in_out_vrr->fixed.ramping_active = false ;
in_out_vrr->fixed.ramping_done = true ;
current_duration_in_us =
calc_duration_in_us_from_refresh_in_uhz(
in_out_vrr->fixed.target_refresh_in_uhz);
}
}
v_total = div64_u64(div64_u64(((unsigned long long )(
current_duration_in_us) * (stream->timing.pix_clk_100hz / 10 )),
stream->timing.h_total), 1000 );
/* v_total cannot be less than nominal */
if (v_total < stream->timing.v_total)
v_total = stream->timing.v_total;
in_out_vrr->adjust.v_total_min = v_total;
in_out_vrr->adjust.v_total_max = v_total;
}
static void apply_below_the_range(struct core_freesync *core_freesync,
const struct dc_stream_state *stream,
unsigned int last_render_time_in_us,
struct mod_vrr_params *in_out_vrr)
{
unsigned int inserted_frame_duration_in_us = 0 ;
unsigned int mid_point_frames_ceil = 0 ;
unsigned int mid_point_frames_floor = 0 ;
unsigned int frame_time_in_us = 0 ;
unsigned int delta_from_mid_point_in_us_1 = 0 xFFFFFFFF;
unsigned int delta_from_mid_point_in_us_2 = 0 xFFFFFFFF;
unsigned int frames_to_insert = 0 ;
unsigned int delta_from_mid_point_delta_in_us;
unsigned int max_render_time_in_us =
in_out_vrr->max_duration_in_us - in_out_vrr->btr.margin_in_us;
/* Program BTR */
if ((last_render_time_in_us + in_out_vrr->btr.margin_in_us / 2 ) < max_render_time_in_us) {
/* Exit Below the Range */
if (in_out_vrr->btr.btr_active) {
in_out_vrr->btr.frame_counter = 0 ;
in_out_vrr->btr.btr_active = false ;
}
} else if (last_render_time_in_us > (max_render_time_in_us + in_out_vrr->btr.margin_in_us / 2 )) {
/* Enter Below the Range */
if (!in_out_vrr->btr.btr_active)
in_out_vrr->btr.btr_active = true ;
}
/* BTR set to "not active" so disengage */
if (!in_out_vrr->btr.btr_active) {
in_out_vrr->btr.inserted_duration_in_us = 0 ;
in_out_vrr->btr.frames_to_insert = 0 ;
in_out_vrr->btr.frame_counter = 0 ;
/* Restore FreeSync */
in_out_vrr->adjust.v_total_min =
mod_freesync_calc_v_total_from_refresh(stream,
in_out_vrr->max_refresh_in_uhz);
in_out_vrr->adjust.v_total_max =
mod_freesync_calc_v_total_from_refresh(stream,
in_out_vrr->min_refresh_in_uhz);
/* BTR set to "active" so engage */
} else {
/* Calculate number of midPoint frames that could fit within
* the render time interval - take ceil of this value
*/
mid_point_frames_ceil = (last_render_time_in_us +
in_out_vrr->btr.mid_point_in_us - 1 ) /
in_out_vrr->btr.mid_point_in_us;
if (mid_point_frames_ceil > 0 ) {
frame_time_in_us = last_render_time_in_us /
mid_point_frames_ceil;
delta_from_mid_point_in_us_1 =
(in_out_vrr->btr.mid_point_in_us >
frame_time_in_us) ?
(in_out_vrr->btr.mid_point_in_us - frame_time_in_us) :
(frame_time_in_us - in_out_vrr->btr.mid_point_in_us);
}
/* Calculate number of midPoint frames that could fit within
* the render time interval - take floor of this value
*/
mid_point_frames_floor = last_render_time_in_us /
in_out_vrr->btr.mid_point_in_us;
if (mid_point_frames_floor > 0 ) {
frame_time_in_us = last_render_time_in_us /
mid_point_frames_floor;
delta_from_mid_point_in_us_2 =
(in_out_vrr->btr.mid_point_in_us >
frame_time_in_us) ?
(in_out_vrr->btr.mid_point_in_us - frame_time_in_us) :
(frame_time_in_us - in_out_vrr->btr.mid_point_in_us);
}
/* Choose number of frames to insert based on how close it
* can get to the mid point of the variable range .
* - Delta for CEIL : delta_from_mid_point_in_us_1
* - Delta for FLOOR : delta_from_mid_point_in_us_2
*/
if (mid_point_frames_ceil &&
(last_render_time_in_us / mid_point_frames_ceil) <
in_out_vrr->min_duration_in_us) {
/* Check for out of range.
* If using CEIL produces a value that is out of range ,
* then we are forced to use FLOOR .
*/
frames_to_insert = mid_point_frames_floor;
} else if (mid_point_frames_floor < 2 ) {
/* Check if FLOOR would result in non-LFC. In this case
* choose to use CEIL
*/
frames_to_insert = mid_point_frames_ceil;
} else if (delta_from_mid_point_in_us_1 < delta_from_mid_point_in_us_2) {
/* If choosing CEIL results in a frame duration that is
* closer to the mid point of the range .
* Choose CEIL
*/
frames_to_insert = mid_point_frames_ceil;
} else {
/* If choosing FLOOR results in a frame duration that is
* closer to the mid point of the range .
* Choose FLOOR
*/
frames_to_insert = mid_point_frames_floor;
}
/* Prefer current frame multiplier when BTR is enabled unless it drifts
* too far from the midpoint
*/
if (delta_from_mid_point_in_us_1 < delta_from_mid_point_in_us_2) {
delta_from_mid_point_delta_in_us = delta_from_mid_point_in_us_2 -
delta_from_mid_point_in_us_1;
} else {
delta_from_mid_point_delta_in_us = delta_from_mid_point_in_us_1 -
delta_from_mid_point_in_us_2;
}
if (in_out_vrr->btr.frames_to_insert != 0 &&
delta_from_mid_point_delta_in_us < BTR_DRIFT_MARGIN) {
if (((last_render_time_in_us / in_out_vrr->btr.frames_to_insert) <
max_render_time_in_us) &&
((last_render_time_in_us / in_out_vrr->btr.frames_to_insert) >
in_out_vrr->min_duration_in_us))
frames_to_insert = in_out_vrr->btr.frames_to_insert;
}
/* Either we've calculated the number of frames to insert,
* or we need to insert min duration frames
*/
if (frames_to_insert &&
(last_render_time_in_us / frames_to_insert) <
in_out_vrr->min_duration_in_us){
frames_to_insert -= (frames_to_insert > 1 ) ?
1 : 0 ;
}
if (frames_to_insert > 0 )
inserted_frame_duration_in_us = last_render_time_in_us /
frames_to_insert;
if (inserted_frame_duration_in_us < in_out_vrr->min_duration_in_us)
inserted_frame_duration_in_us = in_out_vrr->min_duration_in_us;
/* Cache the calculated variables */
in_out_vrr->btr.inserted_duration_in_us =
inserted_frame_duration_in_us;
in_out_vrr->btr.frames_to_insert = frames_to_insert;
in_out_vrr->btr.frame_counter = frames_to_insert;
}
}
static void apply_fixed_refresh(struct core_freesync *core_freesync,
const struct dc_stream_state *stream,
unsigned int last_render_time_in_us,
struct mod_vrr_params *in_out_vrr)
{
bool update = false ;
unsigned int max_render_time_in_us = in_out_vrr->max_duration_in_us;
/* Compute the exit refresh rate and exit frame duration */
unsigned int exit_refresh_rate_in_milli_hz = ((1000000000 /max_render_time_in_us)
+ (1000 *FIXED_REFRESH_EXIT_MARGIN_IN_HZ));
unsigned int exit_frame_duration_in_us = 1000000000 /exit_refresh_rate_in_milli_hz;
if (last_render_time_in_us < exit_frame_duration_in_us) {
/* Exit Fixed Refresh mode */
if (in_out_vrr->fixed.fixed_active) {
in_out_vrr->fixed.frame_counter++;
if (in_out_vrr->fixed.frame_counter >
FIXED_REFRESH_EXIT_FRAME_COUNT) {
in_out_vrr->fixed.frame_counter = 0 ;
in_out_vrr->fixed.fixed_active = false ;
in_out_vrr->fixed.target_refresh_in_uhz = 0 ;
update = true ;
}
} else
in_out_vrr->fixed.frame_counter = 0 ;
} else if (last_render_time_in_us > max_render_time_in_us) {
/* Enter Fixed Refresh mode */
if (!in_out_vrr->fixed.fixed_active) {
in_out_vrr->fixed.frame_counter++;
if (in_out_vrr->fixed.frame_counter >
FIXED_REFRESH_ENTER_FRAME_COUNT) {
in_out_vrr->fixed.frame_counter = 0 ;
in_out_vrr->fixed.fixed_active = true ;
in_out_vrr->fixed.target_refresh_in_uhz =
in_out_vrr->max_refresh_in_uhz;
update = true ;
}
} else
in_out_vrr->fixed.frame_counter = 0 ;
}
if (update) {
if (in_out_vrr->fixed.fixed_active) {
in_out_vrr->adjust.v_total_min =
mod_freesync_calc_v_total_from_refresh(
stream, in_out_vrr->max_refresh_in_uhz);
in_out_vrr->adjust.v_total_max =
in_out_vrr->adjust.v_total_min;
} else {
in_out_vrr->adjust.v_total_min =
mod_freesync_calc_v_total_from_refresh(stream,
in_out_vrr->max_refresh_in_uhz);
in_out_vrr->adjust.v_total_max =
mod_freesync_calc_v_total_from_refresh(stream,
in_out_vrr->min_refresh_in_uhz);
}
}
}
static void determine_flip_interval_workaround_req(struct mod_vrr_params *in_vrr,
unsigned int curr_time_stamp_in_us)
{
in_vrr->flip_interval.vsync_to_flip_in_us = curr_time_stamp_in_us -
in_vrr->flip_interval.v_update_timestamp_in_us;
/* Determine conditions for stopping workaround */
if (in_vrr->flip_interval.flip_interval_workaround_active &&
in_vrr->flip_interval.vsyncs_between_flip < VSYNCS_BETWEEN_FLIP_THRESHOLD &&
in_vrr->flip_interval.vsync_to_flip_in_us > FREESYNC_VSYNC_TO_FLIP_DELTA_IN_US) {
in_vrr->flip_interval.flip_interval_detect_counter = 0 ;
in_vrr->flip_interval.program_flip_interval_workaround = true ;
in_vrr->flip_interval.flip_interval_workaround_active = false ;
} else {
/* Determine conditions for starting workaround */
if (in_vrr->flip_interval.vsyncs_between_flip >= VSYNCS_BETWEEN_FLIP_THRESHOLD &&
in_vrr->flip_interval.vsync_to_flip_in_us < FREESYNC_VSYNC_TO_FLIP_DELTA_IN_US) {
/* Increase flip interval counter we have 2 vsyncs between flips and
* vsync to flip interval is less than 500 us
*/
in_vrr->flip_interval.flip_interval_detect_counter++;
if (in_vrr->flip_interval.flip_interval_detect_counter > FREESYNC_CONSEC_FLIP_AFTER_VSYNC) {
/* Start workaround if we detect 5 consecutive instances of the above case */
in_vrr->flip_interval.program_flip_interval_workaround = true ;
in_vrr->flip_interval.flip_interval_workaround_active = true ;
}
} else {
/* Reset the flip interval counter if we condition is no longer met */
in_vrr->flip_interval.flip_interval_detect_counter = 0 ;
}
}
in_vrr->flip_interval.vsyncs_between_flip = 0 ;
}
static bool vrr_settings_require_update(struct core_freesync *core_freesync,
struct mod_freesync_config *in_config,
unsigned int min_refresh_in_uhz,
unsigned int max_refresh_in_uhz,
struct mod_vrr_params *in_vrr)
{
if (in_vrr->state != in_config->state) {
return true ;
} else if (in_vrr->state == VRR_STATE_ACTIVE_FIXED &&
in_vrr->fixed.target_refresh_in_uhz !=
in_config->fixed_refresh_in_uhz) {
return true ;
} else if (in_vrr->min_refresh_in_uhz != min_refresh_in_uhz) {
return true ;
} else if (in_vrr->max_refresh_in_uhz != max_refresh_in_uhz) {
return true ;
}
return false ;
}
static void build_vrr_infopacket_data_v1(const struct mod_vrr_params *vrr,
struct dc_info_packet *infopacket,
bool freesync_on_desktop)
{
/* PB1 = 0x1A (24bit AMD IEEE OUI (0x00001A) - Byte 0) */
infopacket->sb[1 ] = 0 x1A;
/* PB2 = 0x00 (24bit AMD IEEE OUI (0x00001A) - Byte 1) */
infopacket->sb[2 ] = 0 x00;
/* PB3 = 0x00 (24bit AMD IEEE OUI (0x00001A) - Byte 2) */
infopacket->sb[3 ] = 0 x00;
/* PB4 = Reserved */
/* PB5 = Reserved */
/* PB6 = [Bits 7:3 = Reserved] */
/* PB6 = [Bit 0 = FreeSync Supported] */
if (vrr->state != VRR_STATE_UNSUPPORTED)
infopacket->sb[6 ] |= 0 x01;
/* PB6 = [Bit 1 = FreeSync Enabled] */
if (vrr->state != VRR_STATE_DISABLED &&
vrr->state != VRR_STATE_UNSUPPORTED)
infopacket->sb[6 ] |= 0 x02;
if (freesync_on_desktop) {
/* PB6 = [Bit 2 = FreeSync Active] */
if (vrr->state != VRR_STATE_DISABLED &&
vrr->state != VRR_STATE_UNSUPPORTED)
infopacket->sb[6 ] |= 0 x04;
} else {
if (vrr->state == VRR_STATE_ACTIVE_VARIABLE ||
vrr->state == VRR_STATE_ACTIVE_FIXED)
infopacket->sb[6 ] |= 0 x04;
}
// For v1 & 2 infoframes program nominal if non-fs mode, otherwise full range
/* PB7 = FreeSync Minimum refresh rate (Hz) */
if (vrr->state == VRR_STATE_ACTIVE_VARIABLE ||
vrr->state == VRR_STATE_ACTIVE_FIXED) {
infopacket->sb[7 ] = (unsigned char )((vrr->min_refresh_in_uhz + 500000 ) / 1000000 );
} else {
infopacket->sb[7 ] = (unsigned char )((vrr->max_refresh_in_uhz + 500000 ) / 1000000 );
}
/* PB8 = FreeSync Maximum refresh rate (Hz)
* Note : We should never go above the field rate of the mode timing set .
*/
infopacket->sb[8 ] = (unsigned char )((vrr->max_refresh_in_uhz + 500000 ) / 1000000 );
}
static void build_vrr_infopacket_data_v3(const struct mod_vrr_params *vrr,
struct dc_info_packet *infopacket,
bool freesync_on_desktop)
{
unsigned int min_refresh;
unsigned int max_refresh;
unsigned int fixed_refresh;
unsigned int min_programmed;
/* PB1 = 0x1A (24bit AMD IEEE OUI (0x00001A) - Byte 0) */
infopacket->sb[1 ] = 0 x1A;
/* PB2 = 0x00 (24bit AMD IEEE OUI (0x00001A) - Byte 1) */
infopacket->sb[2 ] = 0 x00;
/* PB3 = 0x00 (24bit AMD IEEE OUI (0x00001A) - Byte 2) */
infopacket->sb[3 ] = 0 x00;
/* PB4 = Reserved */
/* PB5 = Reserved */
/* PB6 = [Bits 7:3 = Reserved] */
/* PB6 = [Bit 0 = FreeSync Supported] */
if (vrr->state != VRR_STATE_UNSUPPORTED)
infopacket->sb[6 ] |= 0 x01;
/* PB6 = [Bit 1 = FreeSync Enabled] */
if (vrr->state != VRR_STATE_DISABLED &&
vrr->state != VRR_STATE_UNSUPPORTED)
infopacket->sb[6 ] |= 0 x02;
/* PB6 = [Bit 2 = FreeSync Active] */
if (freesync_on_desktop) {
if (vrr->state != VRR_STATE_DISABLED &&
vrr->state != VRR_STATE_UNSUPPORTED)
infopacket->sb[6 ] |= 0 x04;
} else {
if (vrr->state == VRR_STATE_ACTIVE_VARIABLE ||
vrr->state == VRR_STATE_ACTIVE_FIXED)
infopacket->sb[6 ] |= 0 x04;
}
min_refresh = (vrr->min_refresh_in_uhz + 500000 ) / 1000000 ;
max_refresh = (vrr->max_refresh_in_uhz + 500000 ) / 1000000 ;
fixed_refresh = (vrr->fixed_refresh_in_uhz + 500000 ) / 1000000 ;
min_programmed = (vrr->state == VRR_STATE_ACTIVE_FIXED) ? fixed_refresh :
(vrr->state == VRR_STATE_ACTIVE_VARIABLE) ? min_refresh :
(vrr->state == VRR_STATE_INACTIVE) ? min_refresh :
max_refresh; // Non-fs case, program nominal range
/* PB7 = FreeSync Minimum refresh rate (Hz) */
infopacket->sb[7 ] = min_programmed & 0 xFF;
/* PB8 = FreeSync Maximum refresh rate (Hz) */
infopacket->sb[8 ] = max_refresh & 0 xFF;
/* PB11 : MSB FreeSync Minimum refresh rate [Hz] - bits 9:8 */
infopacket->sb[11 ] = (min_programmed >> 8 ) & 0 x03;
/* PB12 : MSB FreeSync Maximum refresh rate [Hz] - bits 9:8 */
infopacket->sb[12 ] = (max_refresh >> 8 ) & 0 x03;
/* PB16 : Reserved bits 7:1, FixedRate bit 0 */
infopacket->sb[16 ] = (vrr->state == VRR_STATE_ACTIVE_FIXED) ? 1 : 0 ;
}
static void build_vrr_infopacket_fs2_data(enum color_transfer_func app_tf,
struct dc_info_packet *infopacket)
{
if (app_tf != TRANSFER_FUNC_UNKNOWN) {
infopacket->valid = true ;
if (app_tf == TRANSFER_FUNC_PQ2084)
infopacket->sb[9 ] |= 0 x20; // PB9 = [Bit 5 = PQ EOTF Active]
else {
infopacket->sb[6 ] |= 0 x08; // PB6 = [Bit 3 = Native Color Active]
if (app_tf == TRANSFER_FUNC_GAMMA_22)
infopacket->sb[9 ] |= 0 x04; // PB9 = [Bit 2 = Gamma 2.2 EOTF Active]
}
}
}
static void build_vrr_infopacket_header_v1(enum signal_type signal,
struct dc_info_packet *infopacket,
unsigned int *payload_size)
{
if (dc_is_hdmi_signal(signal)) {
/* HEADER */
/* HB0 = Packet Type = 0x83 (Source Product
* Descriptor InfoFrame )
*/
infopacket->hb0 = DC_HDMI_INFOFRAME_TYPE_SPD;
/* HB1 = Version = 0x01 */
infopacket->hb1 = 0 x01;
/* HB2 = [Bits 7:5 = 0] [Bits 4:0 = Length = 0x08] */
infopacket->hb2 = 0 x08;
*payload_size = 0 x08;
} else if (dc_is_dp_signal(signal)) {
/* HEADER */
/* HB0 = Secondary-data Packet ID = 0 - Only non-zero
* when used to associate audio related info packets
*/
infopacket->hb0 = 0 x00;
/* HB1 = Packet Type = 0x83 (Source Product
* Descriptor InfoFrame )
*/
infopacket->hb1 = DC_HDMI_INFOFRAME_TYPE_SPD;
/* HB2 = [Bits 7:0 = Least significant eight bits -
* For INFOFRAME , the value must be 1 Bh ]
*/
infopacket->hb2 = 0 x1B;
/* HB3 = [Bits 7:2 = INFOFRAME SDP Version Number = 0x1]
* [ Bits 1 : 0 = Most significant two bits = 0 x00 ]
*/
infopacket->hb3 = 0 x04;
*payload_size = 0 x1B;
}
}
static void build_vrr_infopacket_header_v2(enum signal_type signal,
struct dc_info_packet *infopacket,
unsigned int *payload_size)
{
if (dc_is_hdmi_signal(signal)) {
/* HEADER */
/* HB0 = Packet Type = 0x83 (Source Product
* Descriptor InfoFrame )
*/
infopacket->hb0 = DC_HDMI_INFOFRAME_TYPE_SPD;
/* HB1 = Version = 0x02 */
infopacket->hb1 = 0 x02;
/* HB2 = [Bits 7:5 = 0] [Bits 4:0 = Length = 0x09] */
infopacket->hb2 = 0 x09;
*payload_size = 0 x09;
} else if (dc_is_dp_signal(signal)) {
/* HEADER */
/* HB0 = Secondary-data Packet ID = 0 - Only non-zero
* when used to associate audio related info packets
*/
infopacket->hb0 = 0 x00;
/* HB1 = Packet Type = 0x83 (Source Product
* Descriptor InfoFrame )
*/
infopacket->hb1 = DC_HDMI_INFOFRAME_TYPE_SPD;
/* HB2 = [Bits 7:0 = Least significant eight bits -
* For INFOFRAME , the value must be 1 Bh ]
*/
infopacket->hb2 = 0 x1B;
/* HB3 = [Bits 7:2 = INFOFRAME SDP Version Number = 0x2]
* [ Bits 1 : 0 = Most significant two bits = 0 x00 ]
*/
infopacket->hb3 = 0 x08;
*payload_size = 0 x1B;
}
}
static void build_vrr_infopacket_header_v3(enum signal_type signal,
struct dc_info_packet *infopacket,
unsigned int *payload_size)
{
unsigned char version;
version = 3 ;
if (dc_is_hdmi_signal(signal)) {
/* HEADER */
/* HB0 = Packet Type = 0x83 (Source Product
* Descriptor InfoFrame )
*/
infopacket->hb0 = DC_HDMI_INFOFRAME_TYPE_SPD;
/* HB1 = Version = 0x03 */
infopacket->hb1 = version;
/* HB2 = [Bits 7:5 = 0] [Bits 4:0 = Length] */
infopacket->hb2 = 0 x10;
*payload_size = 0 x10;
} else if (dc_is_dp_signal(signal)) {
/* HEADER */
/* HB0 = Secondary-data Packet ID = 0 - Only non-zero
* when used to associate audio related info packets
*/
infopacket->hb0 = 0 x00;
/* HB1 = Packet Type = 0x83 (Source Product
* Descriptor InfoFrame )
*/
infopacket->hb1 = DC_HDMI_INFOFRAME_TYPE_SPD;
/* HB2 = [Bits 7:0 = Least significant eight bits -
* For INFOFRAME , the value must be 1 Bh ]
*/
infopacket->hb2 = 0 x1B;
/* HB3 = [Bits 7:2 = INFOFRAME SDP Version Number = 0x2]
* [ Bits 1 : 0 = Most significant two bits = 0 x00 ]
*/
infopacket->hb3 = (version & 0 x3F) << 2 ;
*payload_size = 0 x1B;
}
}
static void build_vrr_infopacket_checksum(unsigned int *payload_size,
struct dc_info_packet *infopacket)
{
/* Calculate checksum */
unsigned int idx = 0 ;
unsigned char checksum = 0 ;
checksum += infopacket->hb0;
checksum += infopacket->hb1;
checksum += infopacket->hb2;
checksum += infopacket->hb3;
for (idx = 1 ; idx <= *payload_size; idx++)
checksum += infopacket->sb[idx];
/* PB0 = Checksum (one byte complement) */
infopacket->sb[0 ] = (unsigned char )(0 x100 - checksum);
infopacket->valid = true ;
}
static void build_vrr_infopacket_v1(enum signal_type signal,
const struct mod_vrr_params *vrr,
struct dc_info_packet *infopacket,
bool freesync_on_desktop)
{
/* SPD info packet for FreeSync */
unsigned int payload_size = 0 ;
build_vrr_infopacket_header_v1(signal, infopacket, &payload_size);
build_vrr_infopacket_data_v1(vrr, infopacket, freesync_on_desktop);
build_vrr_infopacket_checksum(&payload_size, infopacket);
infopacket->valid = true ;
}
static void build_vrr_infopacket_v2(enum signal_type signal,
const struct mod_vrr_params *vrr,
enum color_transfer_func app_tf,
struct dc_info_packet *infopacket,
bool freesync_on_desktop)
{
unsigned int payload_size = 0 ;
build_vrr_infopacket_header_v2(signal, infopacket, &payload_size);
build_vrr_infopacket_data_v1(vrr, infopacket, freesync_on_desktop);
build_vrr_infopacket_fs2_data(app_tf, infopacket);
build_vrr_infopacket_checksum(&payload_size, infopacket);
infopacket->valid = true ;
}
static void build_vrr_infopacket_v3(enum signal_type signal,
const struct mod_vrr_params *vrr,
enum color_transfer_func app_tf,
struct dc_info_packet *infopacket,
bool freesync_on_desktop)
{
unsigned int payload_size = 0 ;
build_vrr_infopacket_header_v3(signal, infopacket, &payload_size);
build_vrr_infopacket_data_v3(vrr, infopacket, freesync_on_desktop);
build_vrr_infopacket_fs2_data(app_tf, infopacket);
build_vrr_infopacket_checksum(&payload_size, infopacket);
infopacket->valid = true ;
}
static void build_vrr_infopacket_sdp_v1_3(enum vrr_packet_type packet_type,
struct dc_info_packet *infopacket)
{
uint8_t idx = 0 , size = 0 ;
size = ((packet_type == PACKET_TYPE_FS_V1) ? 0 x08 :
(packet_type == PACKET_TYPE_FS_V3) ? 0 x10 :
0 x09);
for (idx = infopacket->hb2; idx > 1 ; idx--) // Data Byte Count: 0x1B
infopacket->sb[idx] = infopacket->sb[idx-1 ];
infopacket->sb[1 ] = size; // Length
infopacket->sb[0 ] = (infopacket->hb3 >> 2 ) & 0 x3F;//Version
infopacket->hb3 = (0 x13 << 2 ); // Header,SDP 1.3
infopacket->hb2 = 0 x1D;
}
void mod_freesync_build_vrr_infopacket(struct mod_freesync *mod_freesync,
const struct dc_stream_state *stream,
const struct mod_vrr_params *vrr,
enum vrr_packet_type packet_type,
enum color_transfer_func app_tf,
struct dc_info_packet *infopacket,
bool pack_sdp_v1_3)
{
/* SPD info packet for FreeSync
* VTEM info packet for HdmiVRR
* Check if Freesync is supported . Return if false . If true ,
* set the corresponding bit in the info packet
*/
if (!vrr->send_info_frame)
return ;
switch (packet_type) {
case PACKET_TYPE_FS_V3:
build_vrr_infopacket_v3(stream->signal, vrr, app_tf, infopacket, stream->freesync_on_desktop);
break ;
case PACKET_TYPE_FS_V2:
build_vrr_infopacket_v2(stream->signal, vrr, app_tf, infopacket, stream->freesync_on_desktop);
break ;
case PACKET_TYPE_VRR:
case PACKET_TYPE_FS_V1:
default :
build_vrr_infopacket_v1(stream->signal, vrr, infopacket, stream->freesync_on_desktop);
}
if (true == pack_sdp_v1_3 &&
true == dc_is_dp_signal(stream->signal) &&
packet_type != PACKET_TYPE_VRR &&
packet_type != PACKET_TYPE_VTEM)
build_vrr_infopacket_sdp_v1_3(packet_type, infopacket);
}
void mod_freesync_build_vrr_params(struct mod_freesync *mod_freesync,
const struct dc_stream_state *stream,
struct mod_freesync_config *in_config,
struct mod_vrr_params *in_out_vrr)
{
struct core_freesync *core_freesync = NULL;
unsigned long long nominal_field_rate_in_uhz = 0 ;
unsigned long long rounded_nominal_in_uhz = 0 ;
unsigned int refresh_range = 0 ;
unsigned long long min_refresh_in_uhz = 0 ;
unsigned long long max_refresh_in_uhz = 0 ;
unsigned long long min_hardware_refresh_in_uhz = 0 ;
if (mod_freesync == NULL)
return ;
core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
/* Calculate nominal field rate for stream */
nominal_field_rate_in_uhz =
mod_freesync_calc_nominal_field_rate(stream);
if (stream->ctx->dc->caps.max_v_total != 0 && stream->timing.h_total != 0 ) {
min_hardware_refresh_in_uhz = div64_u64((stream->timing.pix_clk_100hz * 100000000 ULL),
(stream->timing.h_total * (long long )calc_max_hardware_v_total(stream)));
}
/* Limit minimum refresh rate to what can be supported by hardware */
min_refresh_in_uhz = min_hardware_refresh_in_uhz > in_config->min_refresh_in_uhz ?
min_hardware_refresh_in_uhz : in_config->min_refresh_in_uhz;
max_refresh_in_uhz = in_config->max_refresh_in_uhz;
/* Full range may be larger than current video timing, so cap at nominal */
if (max_refresh_in_uhz > nominal_field_rate_in_uhz)
max_refresh_in_uhz = nominal_field_rate_in_uhz;
/* Full range may be larger than current video timing, so cap at nominal */
if (min_refresh_in_uhz > max_refresh_in_uhz)
min_refresh_in_uhz = max_refresh_in_uhz;
/* If a monitor reports exactly max refresh of 2x of min, enforce it on nominal */
rounded_nominal_in_uhz =
div_u64(nominal_field_rate_in_uhz + 50000 , 100000 ) * 100000 ;
if (in_config->max_refresh_in_uhz == (2 * in_config->min_refresh_in_uhz) &&
in_config->max_refresh_in_uhz == rounded_nominal_in_uhz)
min_refresh_in_uhz = div_u64(nominal_field_rate_in_uhz, 2 );
if (!vrr_settings_require_update(core_freesync,
in_config, (unsigned int )min_refresh_in_uhz, (unsigned int )max_refresh_in_uhz,
in_out_vrr))
return ;
in_out_vrr->state = in_config->state;
in_out_vrr->send_info_frame = in_config->vsif_supported;
if (in_config->state == VRR_STATE_UNSUPPORTED) {
in_out_vrr->state = VRR_STATE_UNSUPPORTED;
in_out_vrr->supported = false ;
in_out_vrr->adjust.v_total_min = stream->timing.v_total;
in_out_vrr->adjust.v_total_max = stream->timing.v_total;
return ;
} else {
in_out_vrr->min_refresh_in_uhz = (unsigned int )min_refresh_in_uhz;
in_out_vrr->max_duration_in_us =
calc_duration_in_us_from_refresh_in_uhz(
(unsigned int )min_refresh_in_uhz);
in_out_vrr->max_refresh_in_uhz = (unsigned int )max_refresh_in_uhz;
in_out_vrr->min_duration_in_us =
calc_duration_in_us_from_refresh_in_uhz(
(unsigned int )max_refresh_in_uhz);
if (in_config->state == VRR_STATE_ACTIVE_FIXED)
in_out_vrr->fixed_refresh_in_uhz = in_config->fixed_refresh_in_uhz;
else
in_out_vrr->fixed_refresh_in_uhz = 0 ;
refresh_range = div_u64(in_out_vrr->max_refresh_in_uhz + 500000 , 1000000 ) -
div_u64(in_out_vrr->min_refresh_in_uhz + 500000 , 1000000 );
in_out_vrr->supported = true ;
}
in_out_vrr->fixed.ramping_active = in_config->ramping;
in_out_vrr->btr.btr_enabled = in_config->btr;
if (in_out_vrr->max_refresh_in_uhz < (2 * in_out_vrr->min_refresh_in_uhz))
in_out_vrr->btr.btr_enabled = false ;
else {
in_out_vrr->btr.margin_in_us = in_out_vrr->max_duration_in_us -
2 * in_out_vrr->min_duration_in_us;
if (in_out_vrr->btr.margin_in_us > BTR_MAX_MARGIN)
in_out_vrr->btr.margin_in_us = BTR_MAX_MARGIN;
}
in_out_vrr->btr.btr_active = false ;
in_out_vrr->btr.inserted_duration_in_us = 0 ;
in_out_vrr->btr.frames_to_insert = 0 ;
in_out_vrr->btr.frame_counter = 0 ;
in_out_vrr->fixed.fixed_active = false ;
in_out_vrr->fixed.target_refresh_in_uhz = 0 ;
in_out_vrr->btr.mid_point_in_us =
(in_out_vrr->min_duration_in_us +
in_out_vrr->max_duration_in_us) / 2 ;
if (in_out_vrr->state == VRR_STATE_UNSUPPORTED) {
in_out_vrr->adjust.v_total_min = stream->timing.v_total;
in_out_vrr->adjust.v_total_max = stream->timing.v_total;
} else if (in_out_vrr->state == VRR_STATE_DISABLED) {
in_out_vrr->adjust.v_total_min = stream->timing.v_total;
in_out_vrr->adjust.v_total_max = stream->timing.v_total;
} else if (in_out_vrr->state == VRR_STATE_INACTIVE) {
in_out_vrr->adjust.v_total_min = stream->timing.v_total;
in_out_vrr->adjust.v_total_max = stream->timing.v_total;
} else if (in_out_vrr->state == VRR_STATE_ACTIVE_VARIABLE &&
refresh_range >= MIN_REFRESH_RANGE) {
in_out_vrr->adjust.v_total_min =
mod_freesync_calc_v_total_from_refresh(stream,
in_out_vrr->max_refresh_in_uhz);
in_out_vrr->adjust.v_total_max =
mod_freesync_calc_v_total_from_refresh(stream,
in_out_vrr->min_refresh_in_uhz);
} else if (in_out_vrr->state == VRR_STATE_ACTIVE_FIXED) {
in_out_vrr->fixed.target_refresh_in_uhz =
in_out_vrr->fixed_refresh_in_uhz;
if (in_out_vrr->fixed.ramping_active &&
in_out_vrr->fixed.fixed_active) {
/* Do not update vtotals if ramping is already active
* in order to continue ramp from current refresh .
*/
in_out_vrr->fixed.fixed_active = true ;
} else {
in_out_vrr->fixed.fixed_active = true ;
in_out_vrr->adjust.v_total_min =
mod_freesync_calc_v_total_from_refresh(stream,
in_out_vrr->fixed.target_refresh_in_uhz);
in_out_vrr->adjust.v_total_max =
in_out_vrr->adjust.v_total_min;
}
} else {
in_out_vrr->state = VRR_STATE_INACTIVE;
in_out_vrr->adjust.v_total_min = stream->timing.v_total;
in_out_vrr->adjust.v_total_max = stream->timing.v_total;
}
in_out_vrr->adjust.allow_otg_v_count_halt = (in_config->state == VRR_STATE_ACTIVE_FIXED) ? true : false ;
}
void mod_freesync_handle_preflip(struct mod_freesync *mod_freesync,
const struct dc_plane_state *plane,
const struct dc_stream_state *stream,
unsigned int curr_time_stamp_in_us,
struct mod_vrr_params *in_out_vrr)
{
struct core_freesync *core_freesync = NULL;
unsigned int last_render_time_in_us = 0 ;
if (mod_freesync == NULL)
return ;
core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
if (in_out_vrr->supported &&
in_out_vrr->state == VRR_STATE_ACTIVE_VARIABLE) {
last_render_time_in_us = curr_time_stamp_in_us -
plane->time.prev_update_time_in_us;
if (in_out_vrr->btr.btr_enabled) {
apply_below_the_range(core_freesync,
stream,
last_render_time_in_us,
in_out_vrr);
} else {
apply_fixed_refresh(core_freesync,
stream,
last_render_time_in_us,
in_out_vrr);
}
determine_flip_interval_workaround_req(in_out_vrr,
curr_time_stamp_in_us);
}
}
void mod_freesync_handle_v_update(struct mod_freesync *mod_freesync,
const struct dc_stream_state *stream,
struct mod_vrr_params *in_out_vrr)
{
struct core_freesync *core_freesync = NULL;
unsigned int cur_timestamp_in_us;
unsigned long long cur_tick;
if ((mod_freesync == NULL) || (stream == NULL) || (in_out_vrr == NULL))
return ;
core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
if (in_out_vrr->supported == false )
return ;
cur_tick = dm_get_timestamp(core_freesync->dc->ctx);
cur_timestamp_in_us = (unsigned int )
div_u64(dm_get_elapse_time_in_ns(core_freesync->dc->ctx, cur_tick, 0 ), 1000 );
in_out_vrr->flip_interval.vsyncs_between_flip++;
in_out_vrr->flip_interval.v_update_timestamp_in_us = cur_timestamp_in_us;
if (in_out_vrr->state == VRR_STATE_ACTIVE_VARIABLE &&
(in_out_vrr->flip_interval.flip_interval_workaround_active ||
(!in_out_vrr->flip_interval.flip_interval_workaround_active &&
in_out_vrr->flip_interval.program_flip_interval_workaround))) {
// set freesync vmin vmax to nominal for workaround
in_out_vrr->adjust.v_total_min =
mod_freesync_calc_v_total_from_refresh(
stream, in_out_vrr->max_refresh_in_uhz);
in_out_vrr->adjust.v_total_max =
in_out_vrr->adjust.v_total_min;
in_out_vrr->flip_interval.program_flip_interval_workaround = false ;
in_out_vrr->flip_interval.do_flip_interval_workaround_cleanup = true ;
return ;
}
if (in_out_vrr->state != VRR_STATE_ACTIVE_VARIABLE &&
in_out_vrr->flip_interval.do_flip_interval_workaround_cleanup) {
in_out_vrr->flip_interval.do_flip_interval_workaround_cleanup = false ;
in_out_vrr->flip_interval.flip_interval_detect_counter = 0 ;
in_out_vrr->flip_interval.vsyncs_between_flip = 0 ;
in_out_vrr->flip_interval.vsync_to_flip_in_us = 0 ;
}
/* Below the Range Logic */
/* Only execute if in fullscreen mode */
if (in_out_vrr->state == VRR_STATE_ACTIVE_VARIABLE &&
in_out_vrr->btr.btr_active) {
/* TODO: pass in flag for Pre-DCE12 ASIC
* in order for frame variable duration to take affect ,
* it needs to be done one VSYNC early , which is at
* frameCounter = = 1 .
* For DCE12 and newer updates to V_TOTAL_MIN / MAX
* will take affect on current frame
*/
if (in_out_vrr->btr.frames_to_insert ==
in_out_vrr->btr.frame_counter) {
in_out_vrr->adjust.v_total_min =
calc_v_total_from_duration(stream,
in_out_vrr,
in_out_vrr->btr.inserted_duration_in_us);
in_out_vrr->adjust.v_total_max =
in_out_vrr->adjust.v_total_min;
}
if (in_out_vrr->btr.frame_counter > 0 )
in_out_vrr->btr.frame_counter--;
/* Restore FreeSync */
if (in_out_vrr->btr.frame_counter == 0 ) {
in_out_vrr->adjust.v_total_min =
mod_freesync_calc_v_total_from_refresh(stream,
in_out_vrr->max_refresh_in_uhz);
in_out_vrr->adjust.v_total_max =
mod_freesync_calc_v_total_from_refresh(stream,
in_out_vrr->min_refresh_in_uhz);
}
}
/* If in fullscreen freesync mode or in video, do not program
* static screen ramp values
*/
if (in_out_vrr->state == VRR_STATE_ACTIVE_VARIABLE)
in_out_vrr->fixed.ramping_active = false ;
/* Gradual Static Screen Ramping Logic
* Execute if ramp is active and user enabled freesync static screen
*/
if (in_out_vrr->state == VRR_STATE_ACTIVE_FIXED &&
in_out_vrr->fixed.ramping_active) {
update_v_total_for_static_ramp(
core_freesync, stream, in_out_vrr);
}
}
unsigned long long mod_freesync_calc_nominal_field_rate(
const struct dc_stream_state *stream)
{
unsigned long long nominal_field_rate_in_uhz = 0 ;
unsigned int total = stream->timing.h_total * stream->timing.v_total;
/* Calculate nominal field rate for stream, rounded up to nearest integer */
nominal_field_rate_in_uhz = stream->timing.pix_clk_100hz;
nominal_field_rate_in_uhz *= 100000000 ULL;
nominal_field_rate_in_uhz = div_u64(nominal_field_rate_in_uhz, total);
return nominal_field_rate_in_uhz;
}
bool mod_freesync_get_freesync_enabled(struct mod_vrr_params *pVrr)
{
return (pVrr->state != VRR_STATE_UNSUPPORTED) && (pVrr->state != VRR_STATE_DISABLED);
}
Messung V0.5 in Prozent C=92 H=95 G=93
¤ Dauer der Verarbeitung: 0.21 Sekunden
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