1 /*
2 * Copyright 2016 Advanced Micro Devices, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: AMD
23 *
24 */
25
26 #include "dm_services.h"
27 #include "dc.h"
28 #include "mod_freesync.h"
29 #include "core_types.h"
30
31 #define MOD_FREESYNC_MAX_CONCURRENT_STREAMS 32
32
33 /* Refresh rate ramp at a fixed rate of 65 Hz/second */
34 #define STATIC_SCREEN_RAMP_DELTA_REFRESH_RATE_PER_FRAME ((1000 / 60) * 65)
35 /* Number of elements in the render times cache array */
36 #define RENDER_TIMES_MAX_COUNT 10
37 /* Threshold to exit BTR (to avoid frequent enter-exits at the lower limit) */
38 #define BTR_EXIT_MARGIN 2000
39 /* Number of consecutive frames to check before entering/exiting fixed refresh*/
40 #define FIXED_REFRESH_ENTER_FRAME_COUNT 5
41 #define FIXED_REFRESH_EXIT_FRAME_COUNT 5
42
43 #define FREESYNC_REGISTRY_NAME "freesync_v1"
44
45 #define FREESYNC_NO_STATIC_FOR_EXTERNAL_DP_REGKEY "DalFreeSyncNoStaticForExternalDp"
46
47 #define FREESYNC_NO_STATIC_FOR_INTERNAL_REGKEY "DalFreeSyncNoStaticForInternal"
48
49 #define FREESYNC_DEFAULT_REGKEY "LCDFreeSyncDefault"
50
51 struct gradual_static_ramp {
52 bool ramp_is_active;
53 bool ramp_direction_is_up;
54 unsigned int ramp_current_frame_duration_in_ns;
55 };
56
57 struct freesync_time {
58 /* video (48Hz feature) related */
59 unsigned int update_duration_in_ns;
60
61 /* BTR/fixed refresh related */
62 unsigned int prev_time_stamp_in_us;
63
64 unsigned int min_render_time_in_us;
65 unsigned int max_render_time_in_us;
66
67 unsigned int render_times_index;
68 unsigned int render_times[RENDER_TIMES_MAX_COUNT];
69
70 unsigned int min_window;
71 unsigned int max_window;
72 };
73
74 struct below_the_range {
75 bool btr_active;
76 bool program_btr;
77
78 unsigned int mid_point_in_us;
79
80 unsigned int inserted_frame_duration_in_us;
81 unsigned int frames_to_insert;
82 unsigned int frame_counter;
83 };
84
85 struct fixed_refresh {
86 bool fixed_active;
87 bool program_fixed;
88 unsigned int frame_counter;
89 };
90
91 struct freesync_range {
92 unsigned int min_refresh;
93 unsigned int max_frame_duration;
94 unsigned int vmax;
95
96 unsigned int max_refresh;
97 unsigned int min_frame_duration;
98 unsigned int vmin;
99 };
100
101 struct freesync_state {
102 bool fullscreen;
103 bool static_screen;
104 bool video;
105
106 unsigned int vmin;
107 unsigned int vmax;
108
109 struct freesync_time time;
110
111 unsigned int nominal_refresh_rate_in_micro_hz;
112 bool windowed_fullscreen;
113
114 struct gradual_static_ramp static_ramp;
115 struct below_the_range btr;
116 struct fixed_refresh fixed_refresh;
117 struct freesync_range freesync_range;
118 };
119
120 struct freesync_entity {
121 struct dc_stream_state *stream;
122 struct mod_freesync_caps *caps;
123 struct freesync_state state;
124 struct mod_freesync_user_enable user_enable;
125 };
126
127 struct freesync_registry_options {
128 bool drr_external_supported;
129 bool drr_internal_supported;
130 bool lcd_freesync_default_set;
131 int lcd_freesync_default_value;
132 };
133
134 struct core_freesync {
135 struct mod_freesync public;
136 struct dc *dc;
137 struct freesync_registry_options opts;
138 struct freesync_entity *map;
139 int num_entities;
140 };
141
142 #define MOD_FREESYNC_TO_CORE(mod_freesync)\
143 container_of(mod_freesync, struct core_freesync, public)
144
mod_freesync_create(struct dc * dc)145 struct mod_freesync *mod_freesync_create(struct dc *dc)
146 {
147 struct core_freesync *core_freesync =
148 kzalloc(sizeof(struct core_freesync), GFP_KERNEL);
149
150
151 struct persistent_data_flag flag;
152
153 int i, data = 0;
154
155 if (core_freesync == NULL)
156 goto fail_alloc_context;
157
158 core_freesync->map = kcalloc(MOD_FREESYNC_MAX_CONCURRENT_STREAMS,
159 sizeof(struct freesync_entity),
160 GFP_KERNEL);
161
162 if (core_freesync->map == NULL)
163 goto fail_alloc_map;
164
165 for (i = 0; i < MOD_FREESYNC_MAX_CONCURRENT_STREAMS; i++)
166 core_freesync->map[i].stream = NULL;
167
168 core_freesync->num_entities = 0;
169
170 if (dc == NULL)
171 goto fail_construct;
172
173 core_freesync->dc = dc;
174
175 /* Create initial module folder in registry for freesync enable data */
176 flag.save_per_edid = true;
177 flag.save_per_link = false;
178 dm_write_persistent_data(dc->ctx, NULL, FREESYNC_REGISTRY_NAME,
179 NULL, NULL, 0, &flag);
180 flag.save_per_edid = false;
181 flag.save_per_link = false;
182
183 if (dm_read_persistent_data(dc->ctx, NULL, NULL,
184 FREESYNC_NO_STATIC_FOR_INTERNAL_REGKEY,
185 &data, sizeof(data), &flag)) {
186 core_freesync->opts.drr_internal_supported =
187 (data & 1) ? false : true;
188 }
189
190 if (dm_read_persistent_data(dc->ctx, NULL, NULL,
191 FREESYNC_NO_STATIC_FOR_EXTERNAL_DP_REGKEY,
192 &data, sizeof(data), &flag)) {
193 core_freesync->opts.drr_external_supported =
194 (data & 1) ? false : true;
195 }
196
197 if (dm_read_persistent_data(dc->ctx, NULL, NULL,
198 FREESYNC_DEFAULT_REGKEY,
199 &data, sizeof(data), &flag)) {
200 core_freesync->opts.lcd_freesync_default_set = true;
201 core_freesync->opts.lcd_freesync_default_value = data;
202 } else {
203 core_freesync->opts.lcd_freesync_default_set = false;
204 core_freesync->opts.lcd_freesync_default_value = 0;
205 }
206
207 return &core_freesync->public;
208
209 fail_construct:
210 kfree(core_freesync->map);
211
212 fail_alloc_map:
213 kfree(core_freesync);
214
215 fail_alloc_context:
216 return NULL;
217 }
218
mod_freesync_destroy(struct mod_freesync * mod_freesync)219 void mod_freesync_destroy(struct mod_freesync *mod_freesync)
220 {
221 if (mod_freesync != NULL) {
222 int i;
223 struct core_freesync *core_freesync =
224 MOD_FREESYNC_TO_CORE(mod_freesync);
225
226 for (i = 0; i < core_freesync->num_entities; i++)
227 if (core_freesync->map[i].stream)
228 dc_stream_release(core_freesync->map[i].stream);
229
230 kfree(core_freesync->map);
231
232 kfree(core_freesync);
233 }
234 }
235
236 /* Given a specific dc_stream* this function finds its equivalent
237 * on the core_freesync->map and returns the corresponding index
238 */
map_index_from_stream(struct core_freesync * core_freesync,struct dc_stream_state * stream)239 static unsigned int map_index_from_stream(struct core_freesync *core_freesync,
240 struct dc_stream_state *stream)
241 {
242 unsigned int index = 0;
243
244 for (index = 0; index < core_freesync->num_entities; index++) {
245 if (core_freesync->map[index].stream == stream) {
246 return index;
247 }
248 }
249 /* Could not find stream requested */
250 ASSERT(false);
251 return index;
252 }
253
mod_freesync_add_stream(struct mod_freesync * mod_freesync,struct dc_stream_state * stream,struct mod_freesync_caps * caps)254 bool mod_freesync_add_stream(struct mod_freesync *mod_freesync,
255 struct dc_stream_state *stream, struct mod_freesync_caps *caps)
256 {
257 struct dc *dc = NULL;
258 struct core_freesync *core_freesync = NULL;
259 int persistent_freesync_enable = 0;
260 struct persistent_data_flag flag;
261 unsigned int nom_refresh_rate_uhz;
262 unsigned long long temp;
263
264 if (mod_freesync == NULL)
265 return false;
266
267 core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
268 dc = core_freesync->dc;
269
270 flag.save_per_edid = true;
271 flag.save_per_link = false;
272
273 if (core_freesync->num_entities < MOD_FREESYNC_MAX_CONCURRENT_STREAMS) {
274
275 dc_stream_retain(stream);
276
277 temp = stream->timing.pix_clk_khz;
278 temp *= 1000ULL * 1000ULL * 1000ULL;
279 temp = div_u64(temp, stream->timing.h_total);
280 temp = div_u64(temp, stream->timing.v_total);
281
282 nom_refresh_rate_uhz = (unsigned int) temp;
283
284 core_freesync->map[core_freesync->num_entities].stream = stream;
285 core_freesync->map[core_freesync->num_entities].caps = caps;
286
287 core_freesync->map[core_freesync->num_entities].state.
288 fullscreen = false;
289 core_freesync->map[core_freesync->num_entities].state.
290 static_screen = false;
291 core_freesync->map[core_freesync->num_entities].state.
292 video = false;
293 core_freesync->map[core_freesync->num_entities].state.time.
294 update_duration_in_ns = 0;
295 core_freesync->map[core_freesync->num_entities].state.
296 static_ramp.ramp_is_active = false;
297
298 /* get persistent data from registry */
299 if (dm_read_persistent_data(dc->ctx, stream->sink,
300 FREESYNC_REGISTRY_NAME,
301 "userenable", &persistent_freesync_enable,
302 sizeof(int), &flag)) {
303 core_freesync->map[core_freesync->num_entities].user_enable.
304 enable_for_gaming =
305 (persistent_freesync_enable & 1) ? true : false;
306 core_freesync->map[core_freesync->num_entities].user_enable.
307 enable_for_static =
308 (persistent_freesync_enable & 2) ? true : false;
309 core_freesync->map[core_freesync->num_entities].user_enable.
310 enable_for_video =
311 (persistent_freesync_enable & 4) ? true : false;
312 /* If FreeSync display and LCDFreeSyncDefault is set, use as default values write back to userenable */
313 } else if (caps->supported && (core_freesync->opts.lcd_freesync_default_set)) {
314 core_freesync->map[core_freesync->num_entities].user_enable.enable_for_gaming =
315 (core_freesync->opts.lcd_freesync_default_value & 1) ? true : false;
316 core_freesync->map[core_freesync->num_entities].user_enable.enable_for_static =
317 (core_freesync->opts.lcd_freesync_default_value & 2) ? true : false;
318 core_freesync->map[core_freesync->num_entities].user_enable.enable_for_video =
319 (core_freesync->opts.lcd_freesync_default_value & 4) ? true : false;
320 dm_write_persistent_data(dc->ctx, stream->sink,
321 FREESYNC_REGISTRY_NAME,
322 "userenable", &core_freesync->opts.lcd_freesync_default_value,
323 sizeof(int), &flag);
324 } else {
325 core_freesync->map[core_freesync->num_entities].user_enable.
326 enable_for_gaming = false;
327 core_freesync->map[core_freesync->num_entities].user_enable.
328 enable_for_static = false;
329 core_freesync->map[core_freesync->num_entities].user_enable.
330 enable_for_video = false;
331 }
332
333 if (caps->supported &&
334 nom_refresh_rate_uhz >= caps->min_refresh_in_micro_hz &&
335 nom_refresh_rate_uhz <= caps->max_refresh_in_micro_hz)
336 stream->ignore_msa_timing_param = 1;
337
338 core_freesync->num_entities++;
339 return true;
340 }
341 return false;
342 }
343
mod_freesync_remove_stream(struct mod_freesync * mod_freesync,struct dc_stream_state * stream)344 bool mod_freesync_remove_stream(struct mod_freesync *mod_freesync,
345 struct dc_stream_state *stream)
346 {
347 int i = 0;
348 struct core_freesync *core_freesync = NULL;
349 unsigned int index = 0;
350
351 if (mod_freesync == NULL)
352 return false;
353
354 core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
355 index = map_index_from_stream(core_freesync, stream);
356
357 dc_stream_release(core_freesync->map[index].stream);
358 core_freesync->map[index].stream = NULL;
359 /* To remove this entity, shift everything after down */
360 for (i = index; i < core_freesync->num_entities - 1; i++)
361 core_freesync->map[i] = core_freesync->map[i + 1];
362 core_freesync->num_entities--;
363 return true;
364 }
365
adjust_vmin_vmax(struct core_freesync * core_freesync,struct dc_stream_state ** streams,int num_streams,int map_index,unsigned int v_total_min,unsigned int v_total_max)366 static void adjust_vmin_vmax(struct core_freesync *core_freesync,
367 struct dc_stream_state **streams,
368 int num_streams,
369 int map_index,
370 unsigned int v_total_min,
371 unsigned int v_total_max)
372 {
373 if (num_streams == 0 || streams == NULL || num_streams > 1)
374 return;
375
376 core_freesync->map[map_index].state.vmin = v_total_min;
377 core_freesync->map[map_index].state.vmax = v_total_max;
378
379 dc_stream_adjust_vmin_vmax(core_freesync->dc, streams,
380 num_streams, v_total_min,
381 v_total_max);
382 }
383
384
update_stream_freesync_context(struct core_freesync * core_freesync,struct dc_stream_state * stream)385 static void update_stream_freesync_context(struct core_freesync *core_freesync,
386 struct dc_stream_state *stream)
387 {
388 unsigned int index;
389 struct freesync_context *ctx;
390
391 ctx = &stream->freesync_ctx;
392
393 index = map_index_from_stream(core_freesync, stream);
394
395 ctx->supported = core_freesync->map[index].caps->supported;
396 ctx->enabled = (core_freesync->map[index].user_enable.enable_for_gaming ||
397 core_freesync->map[index].user_enable.enable_for_video ||
398 core_freesync->map[index].user_enable.enable_for_static);
399 ctx->active = (core_freesync->map[index].state.fullscreen ||
400 core_freesync->map[index].state.video ||
401 core_freesync->map[index].state.static_ramp.ramp_is_active);
402 ctx->min_refresh_in_micro_hz =
403 core_freesync->map[index].caps->min_refresh_in_micro_hz;
404 ctx->nominal_refresh_in_micro_hz = core_freesync->
405 map[index].state.nominal_refresh_rate_in_micro_hz;
406
407 }
408
update_stream(struct core_freesync * core_freesync,struct dc_stream_state * stream)409 static void update_stream(struct core_freesync *core_freesync,
410 struct dc_stream_state *stream)
411 {
412 unsigned int index = map_index_from_stream(core_freesync, stream);
413 if (core_freesync->map[index].caps->supported) {
414 stream->ignore_msa_timing_param = 1;
415 update_stream_freesync_context(core_freesync, stream);
416 }
417 }
418
calc_freesync_range(struct core_freesync * core_freesync,struct dc_stream_state * stream,struct freesync_state * state,unsigned int min_refresh_in_uhz,unsigned int max_refresh_in_uhz)419 static void calc_freesync_range(struct core_freesync *core_freesync,
420 struct dc_stream_state *stream,
421 struct freesync_state *state,
422 unsigned int min_refresh_in_uhz,
423 unsigned int max_refresh_in_uhz)
424 {
425 unsigned int min_frame_duration_in_ns = 0, max_frame_duration_in_ns = 0;
426 unsigned int index = map_index_from_stream(core_freesync, stream);
427 uint32_t vtotal = stream->timing.v_total;
428
429 if ((min_refresh_in_uhz == 0) || (max_refresh_in_uhz == 0)) {
430 state->freesync_range.min_refresh =
431 state->nominal_refresh_rate_in_micro_hz;
432 state->freesync_range.max_refresh =
433 state->nominal_refresh_rate_in_micro_hz;
434
435 state->freesync_range.max_frame_duration = 0;
436 state->freesync_range.min_frame_duration = 0;
437
438 state->freesync_range.vmax = vtotal;
439 state->freesync_range.vmin = vtotal;
440
441 return;
442 }
443
444 min_frame_duration_in_ns = ((unsigned int) (div64_u64(
445 (1000000000ULL * 1000000),
446 max_refresh_in_uhz)));
447 max_frame_duration_in_ns = ((unsigned int) (div64_u64(
448 (1000000000ULL * 1000000),
449 min_refresh_in_uhz)));
450
451 state->freesync_range.min_refresh = min_refresh_in_uhz;
452 state->freesync_range.max_refresh = max_refresh_in_uhz;
453
454 state->freesync_range.max_frame_duration = max_frame_duration_in_ns;
455 state->freesync_range.min_frame_duration = min_frame_duration_in_ns;
456
457 state->freesync_range.vmax = div64_u64(div64_u64(((unsigned long long)(
458 max_frame_duration_in_ns) * stream->timing.pix_clk_khz),
459 stream->timing.h_total), 1000000);
460 state->freesync_range.vmin = div64_u64(div64_u64(((unsigned long long)(
461 min_frame_duration_in_ns) * stream->timing.pix_clk_khz),
462 stream->timing.h_total), 1000000);
463
464 /* vmin/vmax cannot be less than vtotal */
465 if (state->freesync_range.vmin < vtotal) {
466 /* Error of 1 is permissible */
467 ASSERT((state->freesync_range.vmin + 1) >= vtotal);
468 state->freesync_range.vmin = vtotal;
469 }
470
471 if (state->freesync_range.vmax < vtotal) {
472 /* Error of 1 is permissible */
473 ASSERT((state->freesync_range.vmax + 1) >= vtotal);
474 state->freesync_range.vmax = vtotal;
475 }
476
477 /* Determine whether BTR can be supported */
478 if (max_frame_duration_in_ns >=
479 2 * min_frame_duration_in_ns)
480 core_freesync->map[index].caps->btr_supported = true;
481 else
482 core_freesync->map[index].caps->btr_supported = false;
483
484 /* Cache the time variables */
485 state->time.max_render_time_in_us =
486 max_frame_duration_in_ns / 1000;
487 state->time.min_render_time_in_us =
488 min_frame_duration_in_ns / 1000;
489 state->btr.mid_point_in_us =
490 (max_frame_duration_in_ns +
491 min_frame_duration_in_ns) / 2000;
492 }
493
calc_v_total_from_duration(struct dc_stream_state * stream,unsigned int duration_in_ns,int * v_total_nominal)494 static void calc_v_total_from_duration(struct dc_stream_state *stream,
495 unsigned int duration_in_ns, int *v_total_nominal)
496 {
497 *v_total_nominal = div64_u64(div64_u64(((unsigned long long)(
498 duration_in_ns) * stream->timing.pix_clk_khz),
499 stream->timing.h_total), 1000000);
500 }
501
calc_v_total_for_static_ramp(struct core_freesync * core_freesync,struct dc_stream_state * stream,unsigned int index,int * v_total)502 static void calc_v_total_for_static_ramp(struct core_freesync *core_freesync,
503 struct dc_stream_state *stream,
504 unsigned int index, int *v_total)
505 {
506 unsigned int frame_duration = 0;
507
508 struct gradual_static_ramp *static_ramp_variables =
509 &core_freesync->map[index].state.static_ramp;
510
511 /* Calc ratio between new and current frame duration with 3 digit */
512 unsigned int frame_duration_ratio = div64_u64(1000000,
513 (1000 + div64_u64(((unsigned long long)(
514 STATIC_SCREEN_RAMP_DELTA_REFRESH_RATE_PER_FRAME) *
515 static_ramp_variables->ramp_current_frame_duration_in_ns),
516 1000000000)));
517
518 /* Calculate delta between new and current frame duration in ns */
519 unsigned int frame_duration_delta = div64_u64(((unsigned long long)(
520 static_ramp_variables->ramp_current_frame_duration_in_ns) *
521 (1000 - frame_duration_ratio)), 1000);
522
523 /* Adjust frame duration delta based on ratio between current and
524 * standard frame duration (frame duration at 60 Hz refresh rate).
525 */
526 unsigned int ramp_rate_interpolated = div64_u64(((unsigned long long)(
527 frame_duration_delta) * static_ramp_variables->
528 ramp_current_frame_duration_in_ns), 16666666);
529
530 /* Going to a higher refresh rate (lower frame duration) */
531 if (static_ramp_variables->ramp_direction_is_up) {
532 /* reduce frame duration */
533 static_ramp_variables->ramp_current_frame_duration_in_ns -=
534 ramp_rate_interpolated;
535
536 /* min frame duration */
537 frame_duration = ((unsigned int) (div64_u64(
538 (1000000000ULL * 1000000),
539 core_freesync->map[index].state.
540 nominal_refresh_rate_in_micro_hz)));
541
542 /* adjust for frame duration below min */
543 if (static_ramp_variables->ramp_current_frame_duration_in_ns <=
544 frame_duration) {
545
546 static_ramp_variables->ramp_is_active = false;
547 static_ramp_variables->
548 ramp_current_frame_duration_in_ns =
549 frame_duration;
550 }
551 /* Going to a lower refresh rate (larger frame duration) */
552 } else {
553 /* increase frame duration */
554 static_ramp_variables->ramp_current_frame_duration_in_ns +=
555 ramp_rate_interpolated;
556
557 /* max frame duration */
558 frame_duration = ((unsigned int) (div64_u64(
559 (1000000000ULL * 1000000),
560 core_freesync->map[index].caps->min_refresh_in_micro_hz)));
561
562 /* adjust for frame duration above max */
563 if (static_ramp_variables->ramp_current_frame_duration_in_ns >=
564 frame_duration) {
565
566 static_ramp_variables->ramp_is_active = false;
567 static_ramp_variables->
568 ramp_current_frame_duration_in_ns =
569 frame_duration;
570 }
571 }
572
573 calc_v_total_from_duration(stream, static_ramp_variables->
574 ramp_current_frame_duration_in_ns, v_total);
575 }
576
reset_freesync_state_variables(struct freesync_state * state)577 static void reset_freesync_state_variables(struct freesync_state* state)
578 {
579 state->static_ramp.ramp_is_active = false;
580 if (state->nominal_refresh_rate_in_micro_hz)
581 state->static_ramp.ramp_current_frame_duration_in_ns =
582 ((unsigned int) (div64_u64(
583 (1000000000ULL * 1000000),
584 state->nominal_refresh_rate_in_micro_hz)));
585
586 state->btr.btr_active = false;
587 state->btr.frame_counter = 0;
588 state->btr.frames_to_insert = 0;
589 state->btr.inserted_frame_duration_in_us = 0;
590 state->btr.program_btr = false;
591
592 state->fixed_refresh.fixed_active = false;
593 state->fixed_refresh.program_fixed = false;
594 }
595 /*
596 * Sets freesync mode on a stream depending on current freesync state.
597 */
set_freesync_on_streams(struct core_freesync * core_freesync,struct dc_stream_state ** streams,int num_streams)598 static bool set_freesync_on_streams(struct core_freesync *core_freesync,
599 struct dc_stream_state **streams, int num_streams)
600 {
601 int v_total_nominal = 0, v_total_min = 0, v_total_max = 0;
602 unsigned int stream_idx, map_index = 0;
603 struct freesync_state *state;
604
605 if (num_streams == 0 || streams == NULL || num_streams > 1)
606 return false;
607
608 for (stream_idx = 0; stream_idx < num_streams; stream_idx++) {
609
610 map_index = map_index_from_stream(core_freesync,
611 streams[stream_idx]);
612
613 state = &core_freesync->map[map_index].state;
614
615 if (core_freesync->map[map_index].caps->supported) {
616
617 /* Fullscreen has the topmost priority. If the
618 * fullscreen bit is set, we are in a fullscreen
619 * application where it should not matter if it is
620 * static screen. We should not check the static_screen
621 * or video bit.
622 *
623 * Special cases of fullscreen include btr and fixed
624 * refresh. We program btr on every flip and involves
625 * programming full range right before the last inserted frame.
626 * However, we do not want to program the full freesync range
627 * when fixed refresh is active, because we only program
628 * that logic once and this will override it.
629 */
630 if (core_freesync->map[map_index].user_enable.
631 enable_for_gaming == true &&
632 state->fullscreen == true &&
633 state->fixed_refresh.fixed_active == false) {
634 /* Enable freesync */
635
636 v_total_min = state->freesync_range.vmin;
637 v_total_max = state->freesync_range.vmax;
638
639 /* Update the freesync context for the stream */
640 update_stream_freesync_context(core_freesync,
641 streams[stream_idx]);
642
643 adjust_vmin_vmax(core_freesync, streams,
644 num_streams, map_index,
645 v_total_min,
646 v_total_max);
647
648 return true;
649
650 } else if (core_freesync->map[map_index].user_enable.
651 enable_for_video && state->video == true) {
652 /* Enable 48Hz feature */
653
654 calc_v_total_from_duration(streams[stream_idx],
655 state->time.update_duration_in_ns,
656 &v_total_nominal);
657
658 /* Program only if v_total_nominal is in range*/
659 if (v_total_nominal >=
660 streams[stream_idx]->timing.v_total) {
661
662 /* Update the freesync context for
663 * the stream
664 */
665 update_stream_freesync_context(
666 core_freesync,
667 streams[stream_idx]);
668
669 adjust_vmin_vmax(
670 core_freesync, streams,
671 num_streams, map_index,
672 v_total_nominal,
673 v_total_nominal);
674 }
675 return true;
676
677 } else {
678 /* Disable freesync */
679 v_total_nominal = streams[stream_idx]->
680 timing.v_total;
681
682 /* Update the freesync context for
683 * the stream
684 */
685 update_stream_freesync_context(
686 core_freesync,
687 streams[stream_idx]);
688
689 adjust_vmin_vmax(core_freesync, streams,
690 num_streams, map_index,
691 v_total_nominal,
692 v_total_nominal);
693
694 /* Reset the cached variables */
695 reset_freesync_state_variables(state);
696
697 return true;
698 }
699 } else {
700 /* Disable freesync */
701 v_total_nominal = streams[stream_idx]->
702 timing.v_total;
703 /*
704 * we have to reset drr always even sink does
705 * not support freesync because a former stream has
706 * be programmed
707 */
708 adjust_vmin_vmax(core_freesync, streams,
709 num_streams, map_index,
710 v_total_nominal,
711 v_total_nominal);
712 /* Reset the cached variables */
713 reset_freesync_state_variables(state);
714 }
715
716 }
717
718 return false;
719 }
720
set_static_ramp_variables(struct core_freesync * core_freesync,unsigned int index,bool enable_static_screen)721 static void set_static_ramp_variables(struct core_freesync *core_freesync,
722 unsigned int index, bool enable_static_screen)
723 {
724 unsigned int frame_duration = 0;
725 unsigned int nominal_refresh_rate = core_freesync->map[index].state.
726 nominal_refresh_rate_in_micro_hz;
727 unsigned int min_refresh_rate= core_freesync->map[index].caps->
728 min_refresh_in_micro_hz;
729 struct gradual_static_ramp *static_ramp_variables =
730 &core_freesync->map[index].state.static_ramp;
731
732 /* If we are ENABLING static screen, refresh rate should go DOWN.
733 * If we are DISABLING static screen, refresh rate should go UP.
734 */
735 if (enable_static_screen)
736 static_ramp_variables->ramp_direction_is_up = false;
737 else
738 static_ramp_variables->ramp_direction_is_up = true;
739
740 /* If ramp is not active, set initial frame duration depending on
741 * whether we are enabling/disabling static screen mode. If the ramp is
742 * already active, ramp should continue in the opposite direction
743 * starting with the current frame duration
744 */
745 if (!static_ramp_variables->ramp_is_active) {
746 if (enable_static_screen == true) {
747 /* Going to lower refresh rate, so start from max
748 * refresh rate (min frame duration)
749 */
750 frame_duration = ((unsigned int) (div64_u64(
751 (1000000000ULL * 1000000),
752 nominal_refresh_rate)));
753 } else {
754 /* Going to higher refresh rate, so start from min
755 * refresh rate (max frame duration)
756 */
757 frame_duration = ((unsigned int) (div64_u64(
758 (1000000000ULL * 1000000),
759 min_refresh_rate)));
760 }
761 static_ramp_variables->
762 ramp_current_frame_duration_in_ns = frame_duration;
763
764 static_ramp_variables->ramp_is_active = true;
765 }
766 }
767
mod_freesync_handle_v_update(struct mod_freesync * mod_freesync,struct dc_stream_state ** streams,int num_streams)768 void mod_freesync_handle_v_update(struct mod_freesync *mod_freesync,
769 struct dc_stream_state **streams, int num_streams)
770 {
771 unsigned int index, v_total, inserted_frame_v_total = 0;
772 unsigned int min_frame_duration_in_ns, vmax, vmin = 0;
773 struct freesync_state *state;
774 struct core_freesync *core_freesync = NULL;
775 struct dc_static_screen_events triggers = {0};
776
777 if (mod_freesync == NULL)
778 return;
779
780 core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
781
782 if (core_freesync->num_entities == 0)
783 return;
784
785 index = map_index_from_stream(core_freesync,
786 streams[0]);
787
788 if (core_freesync->map[index].caps->supported == false)
789 return;
790
791 state = &core_freesync->map[index].state;
792
793 /* Below the Range Logic */
794
795 /* Only execute if in fullscreen mode */
796 if (state->fullscreen == true &&
797 core_freesync->map[index].user_enable.enable_for_gaming &&
798 core_freesync->map[index].caps->btr_supported &&
799 state->btr.btr_active) {
800
801 /* TODO: pass in flag for Pre-DCE12 ASIC
802 * in order for frame variable duration to take affect,
803 * it needs to be done one VSYNC early, which is at
804 * frameCounter == 1.
805 * For DCE12 and newer updates to V_TOTAL_MIN/MAX
806 * will take affect on current frame
807 */
808 if (state->btr.frames_to_insert == state->btr.frame_counter) {
809
810 min_frame_duration_in_ns = ((unsigned int) (div64_u64(
811 (1000000000ULL * 1000000),
812 state->nominal_refresh_rate_in_micro_hz)));
813
814 vmin = state->freesync_range.vmin;
815
816 inserted_frame_v_total = vmin;
817
818 if (min_frame_duration_in_ns / 1000)
819 inserted_frame_v_total =
820 state->btr.inserted_frame_duration_in_us *
821 vmin / (min_frame_duration_in_ns / 1000);
822
823 /* Set length of inserted frames as v_total_max*/
824 vmax = inserted_frame_v_total;
825 vmin = inserted_frame_v_total;
826
827 /* Program V_TOTAL */
828 adjust_vmin_vmax(core_freesync, streams,
829 num_streams, index,
830 vmin, vmax);
831 }
832
833 if (state->btr.frame_counter > 0)
834 state->btr.frame_counter--;
835
836 /* Restore FreeSync */
837 if (state->btr.frame_counter == 0)
838 set_freesync_on_streams(core_freesync, streams, num_streams);
839 }
840
841 /* If in fullscreen freesync mode or in video, do not program
842 * static screen ramp values
843 */
844 if (state->fullscreen == true || state->video == true) {
845
846 state->static_ramp.ramp_is_active = false;
847
848 return;
849 }
850
851 /* Gradual Static Screen Ramping Logic */
852
853 /* Execute if ramp is active and user enabled freesync static screen*/
854 if (state->static_ramp.ramp_is_active &&
855 core_freesync->map[index].user_enable.enable_for_static) {
856
857 calc_v_total_for_static_ramp(core_freesync, streams[0],
858 index, &v_total);
859
860 /* Update the freesync context for the stream */
861 update_stream_freesync_context(core_freesync, streams[0]);
862
863 /* Program static screen ramp values */
864 adjust_vmin_vmax(core_freesync, streams,
865 num_streams, index,
866 v_total,
867 v_total);
868
869 triggers.overlay_update = true;
870 triggers.surface_update = true;
871
872 dc_stream_set_static_screen_events(core_freesync->dc, streams,
873 num_streams, &triggers);
874 }
875 }
876
mod_freesync_update_state(struct mod_freesync * mod_freesync,struct dc_stream_state ** streams,int num_streams,struct mod_freesync_params * freesync_params)877 void mod_freesync_update_state(struct mod_freesync *mod_freesync,
878 struct dc_stream_state **streams, int num_streams,
879 struct mod_freesync_params *freesync_params)
880 {
881 bool freesync_program_required = false;
882 unsigned int stream_index;
883 struct freesync_state *state;
884 struct core_freesync *core_freesync = NULL;
885 struct dc_static_screen_events triggers = {0};
886
887 if (mod_freesync == NULL)
888 return;
889
890 core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
891
892 if (core_freesync->num_entities == 0)
893 return;
894
895 for(stream_index = 0; stream_index < num_streams; stream_index++) {
896
897 unsigned int map_index = map_index_from_stream(core_freesync,
898 streams[stream_index]);
899
900 bool is_embedded = dc_is_embedded_signal(
901 streams[stream_index]->sink->sink_signal);
902
903 struct freesync_registry_options *opts = &core_freesync->opts;
904
905 state = &core_freesync->map[map_index].state;
906
907 switch (freesync_params->state){
908 case FREESYNC_STATE_FULLSCREEN:
909 state->fullscreen = freesync_params->enable;
910 freesync_program_required = true;
911 state->windowed_fullscreen =
912 freesync_params->windowed_fullscreen;
913 break;
914 case FREESYNC_STATE_STATIC_SCREEN:
915 /* Static screen ramp is disabled by default, but can
916 * be enabled through regkey.
917 */
918 if ((is_embedded && opts->drr_internal_supported) ||
919 (!is_embedded && opts->drr_external_supported))
920
921 if (state->static_screen !=
922 freesync_params->enable) {
923
924 /* Change the state flag */
925 state->static_screen =
926 freesync_params->enable;
927
928 /* Update static screen ramp */
929 set_static_ramp_variables(core_freesync,
930 map_index,
931 freesync_params->enable);
932 }
933 /* We program the ramp starting next VUpdate */
934 break;
935 case FREESYNC_STATE_VIDEO:
936 /* Change core variables only if there is a change*/
937 if(freesync_params->update_duration_in_ns !=
938 state->time.update_duration_in_ns) {
939
940 state->video = freesync_params->enable;
941 state->time.update_duration_in_ns =
942 freesync_params->update_duration_in_ns;
943
944 freesync_program_required = true;
945 }
946 break;
947 case FREESYNC_STATE_NONE:
948 /* handle here to avoid warning */
949 break;
950 }
951 }
952
953 /* Update mask */
954 triggers.overlay_update = true;
955 triggers.surface_update = true;
956
957 dc_stream_set_static_screen_events(core_freesync->dc, streams,
958 num_streams, &triggers);
959
960 if (freesync_program_required)
961 /* Program freesync according to current state*/
962 set_freesync_on_streams(core_freesync, streams, num_streams);
963 }
964
965
mod_freesync_get_state(struct mod_freesync * mod_freesync,struct dc_stream_state * stream,struct mod_freesync_params * freesync_params)966 bool mod_freesync_get_state(struct mod_freesync *mod_freesync,
967 struct dc_stream_state *stream,
968 struct mod_freesync_params *freesync_params)
969 {
970 unsigned int index = 0;
971 struct core_freesync *core_freesync = NULL;
972
973 if (mod_freesync == NULL)
974 return false;
975
976 core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
977 index = map_index_from_stream(core_freesync, stream);
978
979 if (core_freesync->map[index].state.fullscreen) {
980 freesync_params->state = FREESYNC_STATE_FULLSCREEN;
981 freesync_params->enable = true;
982 } else if (core_freesync->map[index].state.static_screen) {
983 freesync_params->state = FREESYNC_STATE_STATIC_SCREEN;
984 freesync_params->enable = true;
985 } else if (core_freesync->map[index].state.video) {
986 freesync_params->state = FREESYNC_STATE_VIDEO;
987 freesync_params->enable = true;
988 } else {
989 freesync_params->state = FREESYNC_STATE_NONE;
990 freesync_params->enable = false;
991 }
992
993 freesync_params->update_duration_in_ns =
994 core_freesync->map[index].state.time.update_duration_in_ns;
995
996 freesync_params->windowed_fullscreen =
997 core_freesync->map[index].state.windowed_fullscreen;
998
999 return true;
1000 }
1001
mod_freesync_set_user_enable(struct mod_freesync * mod_freesync,struct dc_stream_state ** streams,int num_streams,struct mod_freesync_user_enable * user_enable)1002 bool mod_freesync_set_user_enable(struct mod_freesync *mod_freesync,
1003 struct dc_stream_state **streams, int num_streams,
1004 struct mod_freesync_user_enable *user_enable)
1005 {
1006 unsigned int stream_index, map_index;
1007 int persistent_data = 0;
1008 struct persistent_data_flag flag;
1009 struct dc *dc = NULL;
1010 struct core_freesync *core_freesync = NULL;
1011
1012 if (mod_freesync == NULL)
1013 return false;
1014
1015 core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
1016 dc = core_freesync->dc;
1017
1018 flag.save_per_edid = true;
1019 flag.save_per_link = false;
1020
1021 for(stream_index = 0; stream_index < num_streams;
1022 stream_index++){
1023
1024 map_index = map_index_from_stream(core_freesync,
1025 streams[stream_index]);
1026
1027 core_freesync->map[map_index].user_enable = *user_enable;
1028
1029 /* Write persistent data in registry*/
1030 if (core_freesync->map[map_index].user_enable.
1031 enable_for_gaming)
1032 persistent_data = persistent_data | 1;
1033 if (core_freesync->map[map_index].user_enable.
1034 enable_for_static)
1035 persistent_data = persistent_data | 2;
1036 if (core_freesync->map[map_index].user_enable.
1037 enable_for_video)
1038 persistent_data = persistent_data | 4;
1039
1040 dm_write_persistent_data(dc->ctx,
1041 streams[stream_index]->sink,
1042 FREESYNC_REGISTRY_NAME,
1043 "userenable",
1044 &persistent_data,
1045 sizeof(int),
1046 &flag);
1047 }
1048
1049 set_freesync_on_streams(core_freesync, streams, num_streams);
1050
1051 return true;
1052 }
1053
mod_freesync_get_user_enable(struct mod_freesync * mod_freesync,struct dc_stream_state * stream,struct mod_freesync_user_enable * user_enable)1054 bool mod_freesync_get_user_enable(struct mod_freesync *mod_freesync,
1055 struct dc_stream_state *stream,
1056 struct mod_freesync_user_enable *user_enable)
1057 {
1058 unsigned int index = 0;
1059 struct core_freesync *core_freesync = NULL;
1060
1061 if (mod_freesync == NULL)
1062 return false;
1063
1064 core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
1065 index = map_index_from_stream(core_freesync, stream);
1066
1067 *user_enable = core_freesync->map[index].user_enable;
1068
1069 return true;
1070 }
1071
mod_freesync_get_static_ramp_active(struct mod_freesync * mod_freesync,struct dc_stream_state * stream,bool * is_ramp_active)1072 bool mod_freesync_get_static_ramp_active(struct mod_freesync *mod_freesync,
1073 struct dc_stream_state *stream,
1074 bool *is_ramp_active)
1075 {
1076 unsigned int index = 0;
1077 struct core_freesync *core_freesync = NULL;
1078
1079 if (mod_freesync == NULL)
1080 return false;
1081
1082 core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
1083 index = map_index_from_stream(core_freesync, stream);
1084
1085 *is_ramp_active =
1086 core_freesync->map[index].state.static_ramp.ramp_is_active;
1087
1088 return true;
1089 }
1090
mod_freesync_override_min_max(struct mod_freesync * mod_freesync,struct dc_stream_state * streams,unsigned int min_refresh,unsigned int max_refresh,struct mod_freesync_caps * caps)1091 bool mod_freesync_override_min_max(struct mod_freesync *mod_freesync,
1092 struct dc_stream_state *streams,
1093 unsigned int min_refresh,
1094 unsigned int max_refresh,
1095 struct mod_freesync_caps *caps)
1096 {
1097 unsigned int index = 0;
1098 struct core_freesync *core_freesync;
1099 struct freesync_state *state;
1100
1101 if (mod_freesync == NULL)
1102 return false;
1103
1104 core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
1105 index = map_index_from_stream(core_freesync, streams);
1106 state = &core_freesync->map[index].state;
1107
1108 if (max_refresh == 0)
1109 max_refresh = state->nominal_refresh_rate_in_micro_hz;
1110
1111 if (min_refresh == 0) {
1112 /* Restore defaults */
1113 calc_freesync_range(core_freesync, streams, state,
1114 core_freesync->map[index].caps->
1115 min_refresh_in_micro_hz,
1116 state->nominal_refresh_rate_in_micro_hz);
1117 } else {
1118 calc_freesync_range(core_freesync, streams,
1119 state,
1120 min_refresh,
1121 max_refresh);
1122
1123 /* Program vtotal min/max */
1124 adjust_vmin_vmax(core_freesync, &streams, 1, index,
1125 state->freesync_range.vmin,
1126 state->freesync_range.vmax);
1127 }
1128
1129 if (min_refresh != 0 &&
1130 dc_is_embedded_signal(streams->sink->sink_signal) &&
1131 (max_refresh - min_refresh >= 10000000)) {
1132 caps->supported = true;
1133 caps->min_refresh_in_micro_hz = min_refresh;
1134 caps->max_refresh_in_micro_hz = max_refresh;
1135 }
1136
1137 /* Update the stream */
1138 update_stream(core_freesync, streams);
1139
1140 return true;
1141 }
1142
mod_freesync_get_min_max(struct mod_freesync * mod_freesync,struct dc_stream_state * stream,unsigned int * min_refresh,unsigned int * max_refresh)1143 bool mod_freesync_get_min_max(struct mod_freesync *mod_freesync,
1144 struct dc_stream_state *stream,
1145 unsigned int *min_refresh,
1146 unsigned int *max_refresh)
1147 {
1148 unsigned int index = 0;
1149 struct core_freesync *core_freesync = NULL;
1150
1151 if (mod_freesync == NULL)
1152 return false;
1153
1154 core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
1155 index = map_index_from_stream(core_freesync, stream);
1156
1157 *min_refresh =
1158 core_freesync->map[index].state.freesync_range.min_refresh;
1159 *max_refresh =
1160 core_freesync->map[index].state.freesync_range.max_refresh;
1161
1162 return true;
1163 }
1164
mod_freesync_get_vmin_vmax(struct mod_freesync * mod_freesync,struct dc_stream_state * stream,unsigned int * vmin,unsigned int * vmax)1165 bool mod_freesync_get_vmin_vmax(struct mod_freesync *mod_freesync,
1166 struct dc_stream_state *stream,
1167 unsigned int *vmin,
1168 unsigned int *vmax)
1169 {
1170 unsigned int index = 0;
1171 struct core_freesync *core_freesync = NULL;
1172
1173 if (mod_freesync == NULL)
1174 return false;
1175
1176 core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
1177 index = map_index_from_stream(core_freesync, stream);
1178
1179 *vmin =
1180 core_freesync->map[index].state.freesync_range.vmin;
1181 *vmax =
1182 core_freesync->map[index].state.freesync_range.vmax;
1183
1184 return true;
1185 }
1186
mod_freesync_get_v_position(struct mod_freesync * mod_freesync,struct dc_stream_state * stream,unsigned int * nom_v_pos,unsigned int * v_pos)1187 bool mod_freesync_get_v_position(struct mod_freesync *mod_freesync,
1188 struct dc_stream_state *stream,
1189 unsigned int *nom_v_pos,
1190 unsigned int *v_pos)
1191 {
1192 unsigned int index = 0;
1193 struct core_freesync *core_freesync = NULL;
1194 struct crtc_position position;
1195
1196 if (mod_freesync == NULL)
1197 return false;
1198
1199 core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
1200 index = map_index_from_stream(core_freesync, stream);
1201
1202 if (dc_stream_get_crtc_position(core_freesync->dc, &stream, 1,
1203 &position.vertical_count,
1204 &position.nominal_vcount)) {
1205
1206 *nom_v_pos = position.nominal_vcount;
1207 *v_pos = position.vertical_count;
1208
1209 return true;
1210 }
1211
1212 return false;
1213 }
1214
mod_freesync_notify_mode_change(struct mod_freesync * mod_freesync,struct dc_stream_state ** streams,int num_streams)1215 void mod_freesync_notify_mode_change(struct mod_freesync *mod_freesync,
1216 struct dc_stream_state **streams, int num_streams)
1217 {
1218 unsigned int stream_index, map_index;
1219 struct freesync_state *state;
1220 struct core_freesync *core_freesync = NULL;
1221 struct dc_static_screen_events triggers = {0};
1222 unsigned long long temp = 0;
1223
1224 if (mod_freesync == NULL)
1225 return;
1226
1227 core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
1228
1229 for (stream_index = 0; stream_index < num_streams; stream_index++) {
1230 map_index = map_index_from_stream(core_freesync,
1231 streams[stream_index]);
1232
1233 state = &core_freesync->map[map_index].state;
1234
1235 /* Update the field rate for new timing */
1236 temp = streams[stream_index]->timing.pix_clk_khz;
1237 temp *= 1000ULL * 1000ULL * 1000ULL;
1238 temp = div_u64(temp,
1239 streams[stream_index]->timing.h_total);
1240 temp = div_u64(temp,
1241 streams[stream_index]->timing.v_total);
1242 state->nominal_refresh_rate_in_micro_hz =
1243 (unsigned int) temp;
1244
1245 if (core_freesync->map[map_index].caps->supported) {
1246
1247 /* Update the stream */
1248 update_stream(core_freesync, streams[stream_index]);
1249
1250 /* Calculate vmin/vmax and refresh rate for
1251 * current mode
1252 */
1253 calc_freesync_range(core_freesync, *streams, state,
1254 core_freesync->map[map_index].caps->
1255 min_refresh_in_micro_hz,
1256 state->nominal_refresh_rate_in_micro_hz);
1257
1258 /* Update mask */
1259 triggers.overlay_update = true;
1260 triggers.surface_update = true;
1261
1262 dc_stream_set_static_screen_events(core_freesync->dc,
1263 streams, num_streams,
1264 &triggers);
1265 }
1266 }
1267
1268 /* Program freesync according to current state*/
1269 set_freesync_on_streams(core_freesync, streams, num_streams);
1270 }
1271
1272 /* Add the timestamps to the cache and determine whether BTR programming
1273 * is required, depending on the times calculated
1274 */
update_timestamps(struct core_freesync * core_freesync,const struct dc_stream_state * stream,unsigned int map_index,unsigned int last_render_time_in_us)1275 static void update_timestamps(struct core_freesync *core_freesync,
1276 const struct dc_stream_state *stream, unsigned int map_index,
1277 unsigned int last_render_time_in_us)
1278 {
1279 struct freesync_state *state = &core_freesync->map[map_index].state;
1280
1281 state->time.render_times[state->time.render_times_index] =
1282 last_render_time_in_us;
1283 state->time.render_times_index++;
1284
1285 if (state->time.render_times_index >= RENDER_TIMES_MAX_COUNT)
1286 state->time.render_times_index = 0;
1287
1288 if (last_render_time_in_us + BTR_EXIT_MARGIN <
1289 state->time.max_render_time_in_us) {
1290
1291 /* Exit Below the Range */
1292 if (state->btr.btr_active) {
1293
1294 state->btr.program_btr = true;
1295 state->btr.btr_active = false;
1296 state->btr.frame_counter = 0;
1297
1298 /* Exit Fixed Refresh mode */
1299 } else if (state->fixed_refresh.fixed_active) {
1300
1301 state->fixed_refresh.frame_counter++;
1302
1303 if (state->fixed_refresh.frame_counter >
1304 FIXED_REFRESH_EXIT_FRAME_COUNT) {
1305 state->fixed_refresh.frame_counter = 0;
1306 state->fixed_refresh.program_fixed = true;
1307 state->fixed_refresh.fixed_active = false;
1308 }
1309 }
1310
1311 } else if (last_render_time_in_us > state->time.max_render_time_in_us) {
1312
1313 /* Enter Below the Range */
1314 if (!state->btr.btr_active &&
1315 core_freesync->map[map_index].caps->btr_supported) {
1316
1317 state->btr.program_btr = true;
1318 state->btr.btr_active = true;
1319
1320 /* Enter Fixed Refresh mode */
1321 } else if (!state->fixed_refresh.fixed_active &&
1322 !core_freesync->map[map_index].caps->btr_supported) {
1323
1324 state->fixed_refresh.frame_counter++;
1325
1326 if (state->fixed_refresh.frame_counter >
1327 FIXED_REFRESH_ENTER_FRAME_COUNT) {
1328 state->fixed_refresh.frame_counter = 0;
1329 state->fixed_refresh.program_fixed = true;
1330 state->fixed_refresh.fixed_active = true;
1331 }
1332 }
1333 }
1334
1335 /* When Below the Range is active, must react on every frame */
1336 if (state->btr.btr_active)
1337 state->btr.program_btr = true;
1338 }
1339
apply_below_the_range(struct core_freesync * core_freesync,struct dc_stream_state * stream,unsigned int map_index,unsigned int last_render_time_in_us)1340 static void apply_below_the_range(struct core_freesync *core_freesync,
1341 struct dc_stream_state *stream, unsigned int map_index,
1342 unsigned int last_render_time_in_us)
1343 {
1344 unsigned int inserted_frame_duration_in_us = 0;
1345 unsigned int mid_point_frames_ceil = 0;
1346 unsigned int mid_point_frames_floor = 0;
1347 unsigned int frame_time_in_us = 0;
1348 unsigned int delta_from_mid_point_in_us_1 = 0xFFFFFFFF;
1349 unsigned int delta_from_mid_point_in_us_2 = 0xFFFFFFFF;
1350 unsigned int frames_to_insert = 0;
1351 unsigned int min_frame_duration_in_ns = 0;
1352 struct freesync_state *state = &core_freesync->map[map_index].state;
1353
1354 if (!state->btr.program_btr)
1355 return;
1356
1357 state->btr.program_btr = false;
1358
1359 min_frame_duration_in_ns = ((unsigned int) (div64_u64(
1360 (1000000000ULL * 1000000),
1361 state->nominal_refresh_rate_in_micro_hz)));
1362
1363 /* Program BTR */
1364
1365 /* BTR set to "not active" so disengage */
1366 if (!state->btr.btr_active)
1367
1368 /* Restore FreeSync */
1369 set_freesync_on_streams(core_freesync, &stream, 1);
1370
1371 /* BTR set to "active" so engage */
1372 else {
1373
1374 /* Calculate number of midPoint frames that could fit within
1375 * the render time interval- take ceil of this value
1376 */
1377 mid_point_frames_ceil = (last_render_time_in_us +
1378 state->btr.mid_point_in_us- 1) /
1379 state->btr.mid_point_in_us;
1380
1381 if (mid_point_frames_ceil > 0) {
1382
1383 frame_time_in_us = last_render_time_in_us /
1384 mid_point_frames_ceil;
1385 delta_from_mid_point_in_us_1 =
1386 (state->btr.mid_point_in_us >
1387 frame_time_in_us) ?
1388 (state->btr.mid_point_in_us - frame_time_in_us):
1389 (frame_time_in_us - state->btr.mid_point_in_us);
1390 }
1391
1392 /* Calculate number of midPoint frames that could fit within
1393 * the render time interval- take floor of this value
1394 */
1395 mid_point_frames_floor = last_render_time_in_us /
1396 state->btr.mid_point_in_us;
1397
1398 if (mid_point_frames_floor > 0) {
1399
1400 frame_time_in_us = last_render_time_in_us /
1401 mid_point_frames_floor;
1402 delta_from_mid_point_in_us_2 =
1403 (state->btr.mid_point_in_us >
1404 frame_time_in_us) ?
1405 (state->btr.mid_point_in_us - frame_time_in_us):
1406 (frame_time_in_us - state->btr.mid_point_in_us);
1407 }
1408
1409 /* Choose number of frames to insert based on how close it
1410 * can get to the mid point of the variable range.
1411 */
1412 if (delta_from_mid_point_in_us_1 < delta_from_mid_point_in_us_2)
1413 frames_to_insert = mid_point_frames_ceil;
1414 else
1415 frames_to_insert = mid_point_frames_floor;
1416
1417 /* Either we've calculated the number of frames to insert,
1418 * or we need to insert min duration frames
1419 */
1420 if (frames_to_insert > 0)
1421 inserted_frame_duration_in_us = last_render_time_in_us /
1422 frames_to_insert;
1423
1424 if (inserted_frame_duration_in_us <
1425 state->time.min_render_time_in_us)
1426
1427 inserted_frame_duration_in_us =
1428 state->time.min_render_time_in_us;
1429
1430 /* Cache the calculated variables */
1431 state->btr.inserted_frame_duration_in_us =
1432 inserted_frame_duration_in_us;
1433 state->btr.frames_to_insert = frames_to_insert;
1434 state->btr.frame_counter = frames_to_insert;
1435
1436 }
1437 }
1438
apply_fixed_refresh(struct core_freesync * core_freesync,struct dc_stream_state * stream,unsigned int map_index)1439 static void apply_fixed_refresh(struct core_freesync *core_freesync,
1440 struct dc_stream_state *stream, unsigned int map_index)
1441 {
1442 unsigned int vmin = 0, vmax = 0;
1443 struct freesync_state *state = &core_freesync->map[map_index].state;
1444
1445 if (!state->fixed_refresh.program_fixed)
1446 return;
1447
1448 state->fixed_refresh.program_fixed = false;
1449
1450 /* Program Fixed Refresh */
1451
1452 /* Fixed Refresh set to "not active" so disengage */
1453 if (!state->fixed_refresh.fixed_active) {
1454 set_freesync_on_streams(core_freesync, &stream, 1);
1455
1456 /* Fixed Refresh set to "active" so engage (fix to max) */
1457 } else {
1458
1459 vmin = state->freesync_range.vmin;
1460 vmax = vmin;
1461 adjust_vmin_vmax(core_freesync, &stream, map_index,
1462 1, vmin, vmax);
1463 }
1464 }
1465
mod_freesync_pre_update_plane_addresses(struct mod_freesync * mod_freesync,struct dc_stream_state ** streams,int num_streams,unsigned int curr_time_stamp_in_us)1466 void mod_freesync_pre_update_plane_addresses(struct mod_freesync *mod_freesync,
1467 struct dc_stream_state **streams, int num_streams,
1468 unsigned int curr_time_stamp_in_us)
1469 {
1470 unsigned int stream_index, map_index, last_render_time_in_us = 0;
1471 struct core_freesync *core_freesync = NULL;
1472
1473 if (mod_freesync == NULL)
1474 return;
1475
1476 core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
1477
1478 for (stream_index = 0; stream_index < num_streams; stream_index++) {
1479
1480 map_index = map_index_from_stream(core_freesync,
1481 streams[stream_index]);
1482
1483 if (core_freesync->map[map_index].caps->supported) {
1484
1485 last_render_time_in_us = curr_time_stamp_in_us -
1486 core_freesync->map[map_index].state.time.
1487 prev_time_stamp_in_us;
1488
1489 /* Add the timestamps to the cache and determine
1490 * whether BTR program is required
1491 */
1492 update_timestamps(core_freesync, streams[stream_index],
1493 map_index, last_render_time_in_us);
1494
1495 if (core_freesync->map[map_index].state.fullscreen &&
1496 core_freesync->map[map_index].user_enable.
1497 enable_for_gaming) {
1498
1499 if (core_freesync->map[map_index].caps->btr_supported) {
1500
1501 apply_below_the_range(core_freesync,
1502 streams[stream_index], map_index,
1503 last_render_time_in_us);
1504 } else {
1505 apply_fixed_refresh(core_freesync,
1506 streams[stream_index], map_index);
1507 }
1508 }
1509
1510 core_freesync->map[map_index].state.time.
1511 prev_time_stamp_in_us = curr_time_stamp_in_us;
1512 }
1513
1514 }
1515 }
1516
mod_freesync_get_settings(struct mod_freesync * mod_freesync,struct dc_stream_state ** streams,int num_streams,unsigned int * v_total_min,unsigned int * v_total_max,unsigned int * event_triggers,unsigned int * window_min,unsigned int * window_max,unsigned int * lfc_mid_point_in_us,unsigned int * inserted_frames,unsigned int * inserted_duration_in_us)1517 void mod_freesync_get_settings(struct mod_freesync *mod_freesync,
1518 struct dc_stream_state **streams, int num_streams,
1519 unsigned int *v_total_min, unsigned int *v_total_max,
1520 unsigned int *event_triggers,
1521 unsigned int *window_min, unsigned int *window_max,
1522 unsigned int *lfc_mid_point_in_us,
1523 unsigned int *inserted_frames,
1524 unsigned int *inserted_duration_in_us)
1525 {
1526 unsigned int stream_index, map_index;
1527 struct core_freesync *core_freesync = NULL;
1528
1529 if (mod_freesync == NULL)
1530 return;
1531
1532 core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
1533
1534 for (stream_index = 0; stream_index < num_streams; stream_index++) {
1535
1536 map_index = map_index_from_stream(core_freesync,
1537 streams[stream_index]);
1538
1539 if (core_freesync->map[map_index].caps->supported) {
1540 struct freesync_state state =
1541 core_freesync->map[map_index].state;
1542 *v_total_min = state.vmin;
1543 *v_total_max = state.vmax;
1544 *event_triggers = 0;
1545 *window_min = state.time.min_window;
1546 *window_max = state.time.max_window;
1547 *lfc_mid_point_in_us = state.btr.mid_point_in_us;
1548 *inserted_frames = state.btr.frames_to_insert;
1549 *inserted_duration_in_us =
1550 state.btr.inserted_frame_duration_in_us;
1551 }
1552
1553 }
1554 }
1555
1556
