~hc/RK356X_SDK_RELEASE.git

..	..	@@ -23,6 +23,8 @@
23	23	*
24	24	*/
25	25
	26	+#include <linux/slab.h>
	27	+
26	28	#include "dm_services.h"
27	29	#include "dc.h"
28	30	#include "mod_freesync.h"
..	..	@@ -30,113 +32,24 @@
30	32
31	33	#define MOD_FREESYNC_MAX_CONCURRENT_STREAMS 32
32	34
	35	+#define MIN_REFRESH_RANGE 10
33	36	/* Refresh rate ramp at a fixed rate of 65 Hz/second */
34	37	#define STATIC_SCREEN_RAMP_DELTA_REFRESH_RATE_PER_FRAME ((1000 / 60) * 65)
35	38	/* Number of elements in the render times cache array */
36	39	#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
	40	+/* Threshold to exit/exit BTR (to avoid frequent enter-exits at the lower limit) */
	41	+#define BTR_MAX_MARGIN 2500
	42	+/* Threshold to change BTR multiplier (to avoid frequent changes) */
	43	+#define BTR_DRIFT_MARGIN 2000
	44	+/Threshold to exit fixed refresh rate/
	45	+#define FIXED_REFRESH_EXIT_MARGIN_IN_HZ 4
39	46	/* Number of consecutive frames to check before entering/exiting fixed refresh*/
40	47	#define FIXED_REFRESH_ENTER_FRAME_COUNT 5
41	48	#define FIXED_REFRESH_EXIT_FRAME_COUNT 5
42	49
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	50	struct core_freesync {
135	51	struct mod_freesync public;
136	52	struct dc *dc;
137		- struct freesync_registry_options opts;
138		- struct freesync_entity *map;
139		- int num_entities;
140	53	};
141	54
142	55	#define MOD_FREESYNC_TO_CORE(mod_freesync)\
..	..	@@ -147,69 +60,16 @@
147	60	struct core_freesync *core_freesync =
148	61	kzalloc(sizeof(struct core_freesync), GFP_KERNEL);
149	62
150		-
151		- struct persistent_data_flag flag;
152		-
153		- int i, data = 0;
154		-
155	63	if (core_freesync == NULL)
156	64	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	65
170	66	if (dc == NULL)
171	67	goto fail_construct;
172	68
173	69	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	70	return &core_freesync->public;
208	71
209	72	fail_construct:
210		- kfree(core_freesync->map);
211		-
212		-fail_alloc_map:
213	73	kfree(core_freesync);
214	74
215	75	fail_alloc_context:
..	..	@@ -218,968 +78,411 @@
218	78
219	79	void mod_freesync_destroy(struct mod_freesync *mod_freesync)
220	80	{
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		- */
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		-
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	81	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	82	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		-
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		-
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	83	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);
	84	+ core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
	85	+ kfree(core_freesync);
382	86	}
383	87
384		-
385		-static void update_stream_freesync_context(struct core_freesync *core_freesync,
386		- struct dc_stream_state *stream)
	88	+#if 0 /* unused currently */
	89	+static unsigned int calc_refresh_in_uhz_from_duration(
	90	+ unsigned int duration_in_ns)
387	91	{
388		- unsigned int index;
389		- struct freesync_context *ctx;
	92	+ unsigned int refresh_in_uhz =
	93	+ ((unsigned int)(div64_u64((1000000000ULL * 1000000),
	94	+ duration_in_ns)));
	95	+ return refresh_in_uhz;
	96	+}
	97	+#endif
390	98
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		-
	99	+static unsigned int calc_duration_in_us_from_refresh_in_uhz(
	100	+ unsigned int refresh_in_uhz)
	101	+{
	102	+ unsigned int duration_in_us =
	103	+ ((unsigned int)(div64_u64((1000000000ULL * 1000),
	104	+ refresh_in_uhz)));
	105	+ return duration_in_us;
407	106	}
408	107
409		-static void update_stream(struct core_freesync *core_freesync,
410		- struct dc_stream_state *stream)
	108	+static unsigned int calc_duration_in_us_from_v_total(
	109	+ const struct dc_stream_state *stream,
	110	+ const struct mod_vrr_params *in_vrr,
	111	+ unsigned int v_total)
411	112	{
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		- }
	113	+ unsigned int duration_in_us =
	114	+ (unsigned int)(div64_u64(((unsigned long long)(v_total)
	115	+ * 10000) * stream->timing.h_total,
	116	+ stream->timing.pix_clk_100hz));
	117	+
	118	+ return duration_in_us;
417	119	}
418	120
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)
	121	+static unsigned int calc_v_total_from_refresh(
	122	+ const struct dc_stream_state *stream,
	123	+ unsigned int refresh_in_uhz)
424	124	{
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;
	125	+ unsigned int v_total;
	126	+ unsigned int frame_duration_in_ns;
428	127
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;
	128	+ frame_duration_in_ns =
	129	+ ((unsigned int)(div64_u64((1000000000ULL * 1000000),
	130	+ refresh_in_uhz)));
434	131
435		- state->freesync_range.max_frame_duration = 0;
436		- state->freesync_range.min_frame_duration = 0;
	132	+ v_total = div64_u64(div64_u64(((unsigned long long)(
	133	+ frame_duration_in_ns) * (stream->timing.pix_clk_100hz / 10)),
	134	+ stream->timing.h_total), 1000000);
437	135
438		- state->freesync_range.vmax = vtotal;
439		- state->freesync_range.vmin = vtotal;
440		-
441		- return;
	136	+ /* v_total cannot be less than nominal */
	137	+ if (v_total < stream->timing.v_total) {
	138	+ ASSERT(v_total < stream->timing.v_total);
	139	+ v_total = stream->timing.v_total;
442	140	}
443	141
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;
	142	+ return v_total;
492	143	}
493	144
494		-static void calc_v_total_from_duration(struct dc_stream_state *stream,
495		- unsigned int duration_in_ns, int *v_total_nominal)
	145	+static unsigned int calc_v_total_from_duration(
	146	+ const struct dc_stream_state *stream,
	147	+ const struct mod_vrr_params *vrr,
	148	+ unsigned int duration_in_us)
496	149	{
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);
	150	+ unsigned int v_total = 0;
	151	+
	152	+ if (duration_in_us < vrr->min_duration_in_us)
	153	+ duration_in_us = vrr->min_duration_in_us;
	154	+
	155	+ if (duration_in_us > vrr->max_duration_in_us)
	156	+ duration_in_us = vrr->max_duration_in_us;
	157	+
	158	+ v_total = div64_u64(div64_u64(((unsigned long long)(
	159	+ duration_in_us) * (stream->timing.pix_clk_100hz / 10)),
	160	+ stream->timing.h_total), 1000);
	161	+
	162	+ /* v_total cannot be less than nominal */
	163	+ if (v_total < stream->timing.v_total) {
	164	+ ASSERT(v_total < stream->timing.v_total);
	165	+ v_total = stream->timing.v_total;
	166	+ }
	167	+
	168	+ return v_total;
500	169	}
501	170
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)
	171	+static void update_v_total_for_static_ramp(
	172	+ struct core_freesync *core_freesync,
	173	+ const struct dc_stream_state *stream,
	174	+ struct mod_vrr_params *in_out_vrr)
505	175	{
506		- unsigned int frame_duration = 0;
507		-
508		- struct gradual_static_ramp *static_ramp_variables =
509		- &core_freesync->map[index].state.static_ramp;
	176	+ unsigned int v_total = 0;
	177	+ unsigned int current_duration_in_us =
	178	+ calc_duration_in_us_from_v_total(
	179	+ stream, in_out_vrr,
	180	+ in_out_vrr->adjust.v_total_max);
	181	+ unsigned int target_duration_in_us =
	182	+ calc_duration_in_us_from_refresh_in_uhz(
	183	+ in_out_vrr->fixed.target_refresh_in_uhz);
	184	+ bool ramp_direction_is_up = (current_duration_in_us >
	185	+ target_duration_in_us) ? true : false;
510	186
511	187	/* Calc ratio between new and current frame duration with 3 digit */
512	188	unsigned int frame_duration_ratio = div64_u64(1000000,
513	189	(1000 + div64_u64(((unsigned long long)(
514	190	STATIC_SCREEN_RAMP_DELTA_REFRESH_RATE_PER_FRAME) *
515		- static_ramp_variables->ramp_current_frame_duration_in_ns),
516		- 1000000000)));
	191	+ current_duration_in_us),
	192	+ 1000000)));
517	193
518		- /* Calculate delta between new and current frame duration in ns */
	194	+ /* Calculate delta between new and current frame duration in us */
519	195	unsigned int frame_duration_delta = div64_u64(((unsigned long long)(
520		- static_ramp_variables->ramp_current_frame_duration_in_ns) *
	196	+ current_duration_in_us) *
521	197	(1000 - frame_duration_ratio)), 1000);
522	198
523	199	/* Adjust frame duration delta based on ratio between current and
524	200	* standard frame duration (frame duration at 60 Hz refresh rate).
525	201	*/
526	202	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);
	203	+ frame_duration_delta) * current_duration_in_us), 16666);
529	204
530	205	/* Going to a higher refresh rate (lower frame duration) */
531		- if (static_ramp_variables->ramp_direction_is_up) {
	206	+ if (ramp_direction_is_up) {
532	207	/* 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)));
	208	+ current_duration_in_us -= ramp_rate_interpolated;
541	209
542	210	/* 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;
	211	+ if (current_duration_in_us <= target_duration_in_us) {
	212	+ in_out_vrr->fixed.ramping_active = false;
	213	+ in_out_vrr->fixed.ramping_done = true;
	214	+ current_duration_in_us =
	215	+ calc_duration_in_us_from_refresh_in_uhz(
	216	+ in_out_vrr->fixed.target_refresh_in_uhz);
550	217	}
551	218	/* Going to a lower refresh rate (larger frame duration) */
552	219	} else {
553	220	/* 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)));
	221	+ current_duration_in_us += ramp_rate_interpolated;
561	222
562	223	/* 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;
	224	+ if (current_duration_in_us >= target_duration_in_us) {
	225	+ in_out_vrr->fixed.ramping_active = false;
	226	+ in_out_vrr->fixed.ramping_done = true;
	227	+ current_duration_in_us =
	228	+ calc_duration_in_us_from_refresh_in_uhz(
	229	+ in_out_vrr->fixed.target_refresh_in_uhz);
570	230	}
571	231	}
572	232
573		- calc_v_total_from_duration(stream, static_ramp_variables->
574		- ramp_current_frame_duration_in_ns, v_total);
	233	+ v_total = div64_u64(div64_u64(((unsigned long long)(
	234	+ current_duration_in_us) * (stream->timing.pix_clk_100hz / 10)),
	235	+ stream->timing.h_total), 1000);
	236	+
	237	+ /* v_total cannot be less than nominal */
	238	+ if (v_total < stream->timing.v_total)
	239	+ v_total = stream->timing.v_total;
	240	+
	241	+ in_out_vrr->adjust.v_total_min = v_total;
	242	+ in_out_vrr->adjust.v_total_max = v_total;
575	243	}
576	244
577		-static void reset_freesync_state_variables(struct freesync_state* state)
	245	+static void apply_below_the_range(struct core_freesync *core_freesync,
	246	+ const struct dc_stream_state *stream,
	247	+ unsigned int last_render_time_in_us,
	248	+ struct mod_vrr_params *in_out_vrr)
578	249	{
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)));
	250	+ unsigned int inserted_frame_duration_in_us = 0;
	251	+ unsigned int mid_point_frames_ceil = 0;
	252	+ unsigned int mid_point_frames_floor = 0;
	253	+ unsigned int frame_time_in_us = 0;
	254	+ unsigned int delta_from_mid_point_in_us_1 = 0xFFFFFFFF;
	255	+ unsigned int delta_from_mid_point_in_us_2 = 0xFFFFFFFF;
	256	+ unsigned int frames_to_insert = 0;
	257	+ unsigned int delta_from_mid_point_delta_in_us;
	258	+ unsigned int max_render_time_in_us =
	259	+ in_out_vrr->max_duration_in_us - in_out_vrr->btr.margin_in_us;
585	260
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;
	261	+ /* Program BTR */
	262	+ if ((last_render_time_in_us + in_out_vrr->btr.margin_in_us / 2) < max_render_time_in_us) {
	263	+ /* Exit Below the Range */
	264	+ if (in_out_vrr->btr.btr_active) {
	265	+ in_out_vrr->btr.frame_counter = 0;
	266	+ in_out_vrr->btr.btr_active = false;
	267	+ }
	268	+ } else if (last_render_time_in_us > (max_render_time_in_us + in_out_vrr->btr.margin_in_us / 2)) {
	269	+ /* Enter Below the Range */
	270	+ if (!in_out_vrr->btr.btr_active) {
	271	+ in_out_vrr->btr.btr_active = true;
	272	+ }
	273	+ }
591	274
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		- */
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;
	275	+ /* BTR set to "not active" so disengage */
	276	+ if (!in_out_vrr->btr.btr_active) {
	277	+ in_out_vrr->btr.inserted_duration_in_us = 0;
	278	+ in_out_vrr->btr.frames_to_insert = 0;
	279	+ in_out_vrr->btr.frame_counter = 0;
604	280
605		- if (num_streams == 0 \|\| streams == NULL \|\| num_streams > 1)
606		- return false;
	281	+ /* Restore FreeSync */
	282	+ in_out_vrr->adjust.v_total_min =
	283	+ calc_v_total_from_refresh(stream,
	284	+ in_out_vrr->max_refresh_in_uhz);
	285	+ in_out_vrr->adjust.v_total_max =
	286	+ calc_v_total_from_refresh(stream,
	287	+ in_out_vrr->min_refresh_in_uhz);
	288	+ /* BTR set to "active" so engage */
	289	+ } else {
607	290
608		- for (stream_idx = 0; stream_idx < num_streams; stream_idx++) {
	291	+ /* Calculate number of midPoint frames that could fit within
	292	+ * the render time interval- take ceil of this value
	293	+ */
	294	+ mid_point_frames_ceil = (last_render_time_in_us +
	295	+ in_out_vrr->btr.mid_point_in_us - 1) /
	296	+ in_out_vrr->btr.mid_point_in_us;
609	297
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);
	298	+ if (mid_point_frames_ceil > 0) {
	299	+ frame_time_in_us = last_render_time_in_us /
	300	+ mid_point_frames_ceil;
	301	+ delta_from_mid_point_in_us_1 =
	302	+ (in_out_vrr->btr.mid_point_in_us >
	303	+ frame_time_in_us) ?
	304	+ (in_out_vrr->btr.mid_point_in_us - frame_time_in_us) :
	305	+ (frame_time_in_us - in_out_vrr->btr.mid_point_in_us);
714	306	}
715	307
	308	+ /* Calculate number of midPoint frames that could fit within
	309	+ * the render time interval- take floor of this value
	310	+ */
	311	+ mid_point_frames_floor = last_render_time_in_us /
	312	+ in_out_vrr->btr.mid_point_in_us;
	313	+
	314	+ if (mid_point_frames_floor > 0) {
	315	+
	316	+ frame_time_in_us = last_render_time_in_us /
	317	+ mid_point_frames_floor;
	318	+ delta_from_mid_point_in_us_2 =
	319	+ (in_out_vrr->btr.mid_point_in_us >
	320	+ frame_time_in_us) ?
	321	+ (in_out_vrr->btr.mid_point_in_us - frame_time_in_us) :
	322	+ (frame_time_in_us - in_out_vrr->btr.mid_point_in_us);
	323	+ }
	324	+
	325	+ /* Choose number of frames to insert based on how close it
	326	+ * can get to the mid point of the variable range.
	327	+ * - Delta for CEIL: delta_from_mid_point_in_us_1
	328	+ * - Delta for FLOOR: delta_from_mid_point_in_us_2
	329	+ */
	330	+ if ((last_render_time_in_us / mid_point_frames_ceil) < in_out_vrr->min_duration_in_us) {
	331	+ /* Check for out of range.
	332	+ * If using CEIL produces a value that is out of range,
	333	+ * then we are forced to use FLOOR.
	334	+ */
	335	+ frames_to_insert = mid_point_frames_floor;
	336	+ } else if (mid_point_frames_floor < 2) {
	337	+ /* Check if FLOOR would result in non-LFC. In this case
	338	+ * choose to use CEIL
	339	+ */
	340	+ frames_to_insert = mid_point_frames_ceil;
	341	+ } else if (delta_from_mid_point_in_us_1 < delta_from_mid_point_in_us_2) {
	342	+ /* If choosing CEIL results in a frame duration that is
	343	+ * closer to the mid point of the range.
	344	+ * Choose CEIL
	345	+ */
	346	+ frames_to_insert = mid_point_frames_ceil;
	347	+ } else {
	348	+ /* If choosing FLOOR results in a frame duration that is
	349	+ * closer to the mid point of the range.
	350	+ * Choose FLOOR
	351	+ */
	352	+ frames_to_insert = mid_point_frames_floor;
	353	+ }
	354	+
	355	+ /* Prefer current frame multiplier when BTR is enabled unless it drifts
	356	+ * too far from the midpoint
	357	+ */
	358	+ if (delta_from_mid_point_in_us_1 < delta_from_mid_point_in_us_2) {
	359	+ delta_from_mid_point_delta_in_us = delta_from_mid_point_in_us_2 -
	360	+ delta_from_mid_point_in_us_1;
	361	+ } else {
	362	+ delta_from_mid_point_delta_in_us = delta_from_mid_point_in_us_1 -
	363	+ delta_from_mid_point_in_us_2;
	364	+ }
	365	+ if (in_out_vrr->btr.frames_to_insert != 0 &&
	366	+ delta_from_mid_point_delta_in_us < BTR_DRIFT_MARGIN) {
	367	+ if (((last_render_time_in_us / in_out_vrr->btr.frames_to_insert) <
	368	+ max_render_time_in_us) &&
	369	+ ((last_render_time_in_us / in_out_vrr->btr.frames_to_insert) >
	370	+ in_out_vrr->min_duration_in_us))
	371	+ frames_to_insert = in_out_vrr->btr.frames_to_insert;
	372	+ }
	373	+
	374	+ /* Either we've calculated the number of frames to insert,
	375	+ * or we need to insert min duration frames
	376	+ */
	377	+ if (last_render_time_in_us / frames_to_insert <
	378	+ in_out_vrr->min_duration_in_us){
	379	+ frames_to_insert -= (frames_to_insert > 1) ?
	380	+ 1 : 0;
	381	+ }
	382	+
	383	+ if (frames_to_insert > 0)
	384	+ inserted_frame_duration_in_us = last_render_time_in_us /
	385	+ frames_to_insert;
	386	+
	387	+ if (inserted_frame_duration_in_us < in_out_vrr->min_duration_in_us)
	388	+ inserted_frame_duration_in_us = in_out_vrr->min_duration_in_us;
	389	+
	390	+ /* Cache the calculated variables */
	391	+ in_out_vrr->btr.inserted_duration_in_us =
	392	+ inserted_frame_duration_in_us;
	393	+ in_out_vrr->btr.frames_to_insert = frames_to_insert;
	394	+ in_out_vrr->btr.frame_counter = frames_to_insert;
	395	+ }
	396	+}
	397	+
	398	+static void apply_fixed_refresh(struct core_freesync *core_freesync,
	399	+ const struct dc_stream_state *stream,
	400	+ unsigned int last_render_time_in_us,
	401	+ struct mod_vrr_params *in_out_vrr)
	402	+{
	403	+ bool update = false;
	404	+ unsigned int max_render_time_in_us = in_out_vrr->max_duration_in_us;
	405	+
	406	+ /* Compute the exit refresh rate and exit frame duration */
	407	+ unsigned int exit_refresh_rate_in_milli_hz = ((1000000000/max_render_time_in_us)
	408	+ + (1000*FIXED_REFRESH_EXIT_MARGIN_IN_HZ));
	409	+ unsigned int exit_frame_duration_in_us = 1000000000/exit_refresh_rate_in_milli_hz;
	410	+
	411	+ if (last_render_time_in_us < exit_frame_duration_in_us) {
	412	+ /* Exit Fixed Refresh mode */
	413	+ if (in_out_vrr->fixed.fixed_active) {
	414	+ in_out_vrr->fixed.frame_counter++;
	415	+
	416	+ if (in_out_vrr->fixed.frame_counter >
	417	+ FIXED_REFRESH_EXIT_FRAME_COUNT) {
	418	+ in_out_vrr->fixed.frame_counter = 0;
	419	+ in_out_vrr->fixed.fixed_active = false;
	420	+ in_out_vrr->fixed.target_refresh_in_uhz = 0;
	421	+ update = true;
	422	+ }
	423	+ }
	424	+ } else if (last_render_time_in_us > max_render_time_in_us) {
	425	+ /* Enter Fixed Refresh mode */
	426	+ if (!in_out_vrr->fixed.fixed_active) {
	427	+ in_out_vrr->fixed.frame_counter++;
	428	+
	429	+ if (in_out_vrr->fixed.frame_counter >
	430	+ FIXED_REFRESH_ENTER_FRAME_COUNT) {
	431	+ in_out_vrr->fixed.frame_counter = 0;
	432	+ in_out_vrr->fixed.fixed_active = true;
	433	+ in_out_vrr->fixed.target_refresh_in_uhz =
	434	+ in_out_vrr->max_refresh_in_uhz;
	435	+ update = true;
	436	+ }
	437	+ }
	438	+ }
	439	+
	440	+ if (update) {
	441	+ if (in_out_vrr->fixed.fixed_active) {
	442	+ in_out_vrr->adjust.v_total_min =
	443	+ calc_v_total_from_refresh(
	444	+ stream, in_out_vrr->max_refresh_in_uhz);
	445	+ in_out_vrr->adjust.v_total_max =
	446	+ in_out_vrr->adjust.v_total_min;
	447	+ } else {
	448	+ in_out_vrr->adjust.v_total_min =
	449	+ calc_v_total_from_refresh(stream,
	450	+ in_out_vrr->max_refresh_in_uhz);
	451	+ in_out_vrr->adjust.v_total_max =
	452	+ calc_v_total_from_refresh(stream,
	453	+ in_out_vrr->min_refresh_in_uhz);
	454	+ }
	455	+ }
	456	+}
	457	+
	458	+static bool vrr_settings_require_update(struct core_freesync *core_freesync,
	459	+ struct mod_freesync_config *in_config,
	460	+ unsigned int min_refresh_in_uhz,
	461	+ unsigned int max_refresh_in_uhz,
	462	+ struct mod_vrr_params *in_vrr)
	463	+{
	464	+ if (in_vrr->state != in_config->state) {
	465	+ return true;
	466	+ } else if (in_vrr->state == VRR_STATE_ACTIVE_FIXED &&
	467	+ in_vrr->fixed.target_refresh_in_uhz !=
	468	+ in_config->fixed_refresh_in_uhz) {
	469	+ return true;
	470	+ } else if (in_vrr->min_refresh_in_uhz != min_refresh_in_uhz) {
	471	+ return true;
	472	+ } else if (in_vrr->max_refresh_in_uhz != max_refresh_in_uhz) {
	473	+ return true;
716	474	}
717	475
718	476	return false;
719	477	}
720	478
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		-
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		-
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		-
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		-
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		-
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		-
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		-
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		-
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		-
1165	479	bool mod_freesync_get_vmin_vmax(struct mod_freesync *mod_freesync,
1166		- struct dc_stream_state *stream,
	480	+ const struct dc_stream_state *stream,
1167	481	unsigned int *vmin,
1168	482	unsigned int *vmax)
1169	483	{
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;
	484	+ *vmin = stream->adjust.v_total_min;
	485	+ *vmax = stream->adjust.v_total_max;
1183	486
1184	487	return true;
1185	488	}
..	..	@@ -1189,7 +492,6 @@
1189	492	unsigned int *nom_v_pos,
1190	493	unsigned int *v_pos)
1191	494	{
1192		- unsigned int index = 0;
1193	495	struct core_freesync *core_freesync = NULL;
1194	496	struct crtc_position position;
1195	497
..	..	@@ -1197,7 +499,6 @@
1197	499	return false;
1198	500
1199	501	core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
1200		- index = map_index_from_stream(core_freesync, stream);
1201	502
1202	503	if (dc_stream_get_crtc_position(core_freesync->dc, &stream, 1,
1203	504	&position.vertical_count,
..	..	@@ -1212,310 +513,629 @@
1212	513	return false;
1213	514	}
1214	515
1215		-void mod_freesync_notify_mode_change(struct mod_freesync *mod_freesync,
1216		- struct dc_stream_state **streams, int num_streams)
	516	+static void build_vrr_infopacket_data_v1(const struct mod_vrr_params *vrr,
	517	+ struct dc_info_packet *infopacket)
1217	518	{
1218		- unsigned int stream_index, map_index;
1219		- struct freesync_state *state;
	519	+ /* PB1 = 0x1A (24bit AMD IEEE OUI (0x00001A) - Byte 0) */
	520	+ infopacket->sb[1] = 0x1A;
	521	+
	522	+ /* PB2 = 0x00 (24bit AMD IEEE OUI (0x00001A) - Byte 1) */
	523	+ infopacket->sb[2] = 0x00;
	524	+
	525	+ /* PB3 = 0x00 (24bit AMD IEEE OUI (0x00001A) - Byte 2) */
	526	+ infopacket->sb[3] = 0x00;
	527	+
	528	+ /* PB4 = Reserved */
	529	+
	530	+ /* PB5 = Reserved */
	531	+
	532	+ /* PB6 = [Bits 7:3 = Reserved] */
	533	+
	534	+ /* PB6 = [Bit 0 = FreeSync Supported] */
	535	+ if (vrr->state != VRR_STATE_UNSUPPORTED)
	536	+ infopacket->sb[6] \|= 0x01;
	537	+
	538	+ /* PB6 = [Bit 1 = FreeSync Enabled] */
	539	+ if (vrr->state != VRR_STATE_DISABLED &&
	540	+ vrr->state != VRR_STATE_UNSUPPORTED)
	541	+ infopacket->sb[6] \|= 0x02;
	542	+
	543	+ /* PB6 = [Bit 2 = FreeSync Active] */
	544	+ if (vrr->state == VRR_STATE_ACTIVE_VARIABLE \|\|
	545	+ vrr->state == VRR_STATE_ACTIVE_FIXED)
	546	+ infopacket->sb[6] \|= 0x04;
	547	+
	548	+ // For v1 & 2 infoframes program nominal if non-fs mode, otherwise full range
	549	+ /* PB7 = FreeSync Minimum refresh rate (Hz) */
	550	+ if (vrr->state == VRR_STATE_ACTIVE_VARIABLE \|\|
	551	+ vrr->state == VRR_STATE_ACTIVE_FIXED) {
	552	+ infopacket->sb[7] = (unsigned char)((vrr->min_refresh_in_uhz + 500000) / 1000000);
	553	+ } else {
	554	+ infopacket->sb[7] = (unsigned char)((vrr->max_refresh_in_uhz + 500000) / 1000000);
	555	+ }
	556	+
	557	+ /* PB8 = FreeSync Maximum refresh rate (Hz)
	558	+ * Note: We should never go above the field rate of the mode timing set.
	559	+ */
	560	+ infopacket->sb[8] = (unsigned char)((vrr->max_refresh_in_uhz + 500000) / 1000000);
	561	+
	562	+ //FreeSync HDR
	563	+ infopacket->sb[9] = 0;
	564	+ infopacket->sb[10] = 0;
	565	+}
	566	+
	567	+static void build_vrr_infopacket_data_v3(const struct mod_vrr_params *vrr,
	568	+ struct dc_info_packet *infopacket)
	569	+{
	570	+ /* PB1 = 0x1A (24bit AMD IEEE OUI (0x00001A) - Byte 0) */
	571	+ infopacket->sb[1] = 0x1A;
	572	+
	573	+ /* PB2 = 0x00 (24bit AMD IEEE OUI (0x00001A) - Byte 1) */
	574	+ infopacket->sb[2] = 0x00;
	575	+
	576	+ /* PB3 = 0x00 (24bit AMD IEEE OUI (0x00001A) - Byte 2) */
	577	+ infopacket->sb[3] = 0x00;
	578	+
	579	+ /* PB4 = Reserved */
	580	+
	581	+ /* PB5 = Reserved */
	582	+
	583	+ /* PB6 = [Bits 7:3 = Reserved] */
	584	+
	585	+ /* PB6 = [Bit 0 = FreeSync Supported] */
	586	+ if (vrr->state != VRR_STATE_UNSUPPORTED)
	587	+ infopacket->sb[6] \|= 0x01;
	588	+
	589	+ /* PB6 = [Bit 1 = FreeSync Enabled] */
	590	+ if (vrr->state != VRR_STATE_DISABLED &&
	591	+ vrr->state != VRR_STATE_UNSUPPORTED)
	592	+ infopacket->sb[6] \|= 0x02;
	593	+
	594	+ /* PB6 = [Bit 2 = FreeSync Active] */
	595	+ if (vrr->state == VRR_STATE_ACTIVE_VARIABLE \|\|
	596	+ vrr->state == VRR_STATE_ACTIVE_FIXED)
	597	+ infopacket->sb[6] \|= 0x04;
	598	+
	599	+ if (vrr->state == VRR_STATE_ACTIVE_FIXED) {
	600	+ /* PB7 = FreeSync Minimum refresh rate (Hz) */
	601	+ infopacket->sb[7] = (unsigned char)((vrr->fixed_refresh_in_uhz + 500000) / 1000000);
	602	+ /* PB8 = FreeSync Maximum refresh rate (Hz) */
	603	+ infopacket->sb[8] = (unsigned char)((vrr->fixed_refresh_in_uhz + 500000) / 1000000);
	604	+ } else if (vrr->state == VRR_STATE_ACTIVE_VARIABLE) {
	605	+ /* PB7 = FreeSync Minimum refresh rate (Hz) */
	606	+ infopacket->sb[7] = (unsigned char)((vrr->min_refresh_in_uhz + 500000) / 1000000);
	607	+ /* PB8 = FreeSync Maximum refresh rate (Hz) */
	608	+ infopacket->sb[8] = (unsigned char)((vrr->max_refresh_in_uhz + 500000) / 1000000);
	609	+ } else {
	610	+ // Non-fs case, program nominal range
	611	+ /* PB7 = FreeSync Minimum refresh rate (Hz) */
	612	+ infopacket->sb[7] = (unsigned char)((vrr->max_refresh_in_uhz + 500000) / 1000000);
	613	+ /* PB8 = FreeSync Maximum refresh rate (Hz) */
	614	+ infopacket->sb[8] = (unsigned char)((vrr->max_refresh_in_uhz + 500000) / 1000000);
	615	+ }
	616	+
	617	+ //FreeSync HDR
	618	+ infopacket->sb[9] = 0;
	619	+ infopacket->sb[10] = 0;
	620	+}
	621	+
	622	+static void build_vrr_infopacket_fs2_data(enum color_transfer_func app_tf,
	623	+ struct dc_info_packet *infopacket)
	624	+{
	625	+ if (app_tf != TRANSFER_FUNC_UNKNOWN) {
	626	+ infopacket->valid = true;
	627	+
	628	+ infopacket->sb[6] \|= 0x08; // PB6 = [Bit 3 = Native Color Active]
	629	+
	630	+ if (app_tf == TRANSFER_FUNC_GAMMA_22) {
	631	+ infopacket->sb[9] \|= 0x04; // PB6 = [Bit 2 = Gamma 2.2 EOTF Active]
	632	+ }
	633	+ }
	634	+}
	635	+
	636	+static void build_vrr_infopacket_header_v1(enum signal_type signal,
	637	+ struct dc_info_packet *infopacket,
	638	+ unsigned int *payload_size)
	639	+{
	640	+ if (dc_is_hdmi_signal(signal)) {
	641	+
	642	+ /* HEADER */
	643	+
	644	+ /* HB0 = Packet Type = 0x83 (Source Product
	645	+ * Descriptor InfoFrame)
	646	+ */
	647	+ infopacket->hb0 = DC_HDMI_INFOFRAME_TYPE_SPD;
	648	+
	649	+ /* HB1 = Version = 0x01 */
	650	+ infopacket->hb1 = 0x01;
	651	+
	652	+ /* HB2 = [Bits 7:5 = 0] [Bits 4:0 = Length = 0x08] */
	653	+ infopacket->hb2 = 0x08;
	654	+
	655	+ *payload_size = 0x08;
	656	+
	657	+ } else if (dc_is_dp_signal(signal)) {
	658	+
	659	+ /* HEADER */
	660	+
	661	+ /* HB0 = Secondary-data Packet ID = 0 - Only non-zero
	662	+ * when used to associate audio related info packets
	663	+ */
	664	+ infopacket->hb0 = 0x00;
	665	+
	666	+ /* HB1 = Packet Type = 0x83 (Source Product
	667	+ * Descriptor InfoFrame)
	668	+ */
	669	+ infopacket->hb1 = DC_HDMI_INFOFRAME_TYPE_SPD;
	670	+
	671	+ /* HB2 = [Bits 7:0 = Least significant eight bits -
	672	+ * For INFOFRAME, the value must be 1Bh]
	673	+ */
	674	+ infopacket->hb2 = 0x1B;
	675	+
	676	+ /* HB3 = [Bits 7:2 = INFOFRAME SDP Version Number = 0x1]
	677	+ * [Bits 1:0 = Most significant two bits = 0x00]
	678	+ */
	679	+ infopacket->hb3 = 0x04;
	680	+
	681	+ *payload_size = 0x1B;
	682	+ }
	683	+}
	684	+
	685	+static void build_vrr_infopacket_header_v2(enum signal_type signal,
	686	+ struct dc_info_packet *infopacket,
	687	+ unsigned int *payload_size)
	688	+{
	689	+ if (dc_is_hdmi_signal(signal)) {
	690	+
	691	+ /* HEADER */
	692	+
	693	+ /* HB0 = Packet Type = 0x83 (Source Product
	694	+ * Descriptor InfoFrame)
	695	+ */
	696	+ infopacket->hb0 = DC_HDMI_INFOFRAME_TYPE_SPD;
	697	+
	698	+ /* HB1 = Version = 0x02 */
	699	+ infopacket->hb1 = 0x02;
	700	+
	701	+ /* HB2 = [Bits 7:5 = 0] [Bits 4:0 = Length = 0x09] */
	702	+ infopacket->hb2 = 0x09;
	703	+
	704	+ *payload_size = 0x0A;
	705	+
	706	+ } else if (dc_is_dp_signal(signal)) {
	707	+
	708	+ /* HEADER */
	709	+
	710	+ /* HB0 = Secondary-data Packet ID = 0 - Only non-zero
	711	+ * when used to associate audio related info packets
	712	+ */
	713	+ infopacket->hb0 = 0x00;
	714	+
	715	+ /* HB1 = Packet Type = 0x83 (Source Product
	716	+ * Descriptor InfoFrame)
	717	+ */
	718	+ infopacket->hb1 = DC_HDMI_INFOFRAME_TYPE_SPD;
	719	+
	720	+ /* HB2 = [Bits 7:0 = Least significant eight bits -
	721	+ * For INFOFRAME, the value must be 1Bh]
	722	+ */
	723	+ infopacket->hb2 = 0x1B;
	724	+
	725	+ /* HB3 = [Bits 7:2 = INFOFRAME SDP Version Number = 0x2]
	726	+ * [Bits 1:0 = Most significant two bits = 0x00]
	727	+ */
	728	+ infopacket->hb3 = 0x08;
	729	+
	730	+ *payload_size = 0x1B;
	731	+ }
	732	+}
	733	+
	734	+static void build_vrr_infopacket_checksum(unsigned int *payload_size,
	735	+ struct dc_info_packet *infopacket)
	736	+{
	737	+ /* Calculate checksum */
	738	+ unsigned int idx = 0;
	739	+ unsigned char checksum = 0;
	740	+
	741	+ checksum += infopacket->hb0;
	742	+ checksum += infopacket->hb1;
	743	+ checksum += infopacket->hb2;
	744	+ checksum += infopacket->hb3;
	745	+
	746	+ for (idx = 1; idx <= *payload_size; idx++)
	747	+ checksum += infopacket->sb[idx];
	748	+
	749	+ /* PB0 = Checksum (one byte complement) */
	750	+ infopacket->sb[0] = (unsigned char)(0x100 - checksum);
	751	+
	752	+ infopacket->valid = true;
	753	+}
	754	+
	755	+static void build_vrr_infopacket_v1(enum signal_type signal,
	756	+ const struct mod_vrr_params *vrr,
	757	+ struct dc_info_packet *infopacket)
	758	+{
	759	+ /* SPD info packet for FreeSync */
	760	+ unsigned int payload_size = 0;
	761	+
	762	+ build_vrr_infopacket_header_v1(signal, infopacket, &payload_size);
	763	+ build_vrr_infopacket_data_v1(vrr, infopacket);
	764	+ build_vrr_infopacket_checksum(&payload_size, infopacket);
	765	+
	766	+ infopacket->valid = true;
	767	+}
	768	+
	769	+static void build_vrr_infopacket_v2(enum signal_type signal,
	770	+ const struct mod_vrr_params *vrr,
	771	+ enum color_transfer_func app_tf,
	772	+ struct dc_info_packet *infopacket)
	773	+{
	774	+ unsigned int payload_size = 0;
	775	+
	776	+ build_vrr_infopacket_header_v2(signal, infopacket, &payload_size);
	777	+ build_vrr_infopacket_data_v1(vrr, infopacket);
	778	+
	779	+ build_vrr_infopacket_fs2_data(app_tf, infopacket);
	780	+
	781	+ build_vrr_infopacket_checksum(&payload_size, infopacket);
	782	+
	783	+ infopacket->valid = true;
	784	+}
	785	+#ifndef TRIM_FSFT
	786	+static void build_vrr_infopacket_fast_transport_data(
	787	+ bool ftActive,
	788	+ unsigned int ftOutputRate,
	789	+ struct dc_info_packet *infopacket)
	790	+{
	791	+ /* PB9 : bit7 - fast transport Active*/
	792	+ unsigned char activeBit = (ftActive) ? 1 << 7 : 0;
	793	+
	794	+ infopacket->sb[1] &= ~activeBit; //clear bit
	795	+ infopacket->sb[1] \|= activeBit; //set bit
	796	+
	797	+ /* PB13 : Target Output Pixel Rate [kHz] - bits 7:0 */
	798	+ infopacket->sb[13] = ftOutputRate & 0xFF;
	799	+
	800	+ /* PB14 : Target Output Pixel Rate [kHz] - bits 15:8 */
	801	+ infopacket->sb[14] = (ftOutputRate >> 8) & 0xFF;
	802	+
	803	+ /* PB15 : Target Output Pixel Rate [kHz] - bits 23:16 */
	804	+ infopacket->sb[15] = (ftOutputRate >> 16) & 0xFF;
	805	+
	806	+}
	807	+#endif
	808	+
	809	+static void build_vrr_infopacket_v3(enum signal_type signal,
	810	+ const struct mod_vrr_params *vrr,
	811	+#ifndef TRIM_FSFT
	812	+ bool ftActive, unsigned int ftOutputRate,
	813	+#endif
	814	+ enum color_transfer_func app_tf,
	815	+ struct dc_info_packet *infopacket)
	816	+{
	817	+ unsigned int payload_size = 0;
	818	+
	819	+ build_vrr_infopacket_header_v2(signal, infopacket, &payload_size);
	820	+ build_vrr_infopacket_data_v3(vrr, infopacket);
	821	+
	822	+ build_vrr_infopacket_fs2_data(app_tf, infopacket);
	823	+
	824	+#ifndef TRIM_FSFT
	825	+ build_vrr_infopacket_fast_transport_data(
	826	+ ftActive,
	827	+ ftOutputRate,
	828	+ infopacket);
	829	+#endif
	830	+
	831	+ build_vrr_infopacket_checksum(&payload_size, infopacket);
	832	+
	833	+ infopacket->valid = true;
	834	+}
	835	+
	836	+void mod_freesync_build_vrr_infopacket(struct mod_freesync *mod_freesync,
	837	+ const struct dc_stream_state *stream,
	838	+ const struct mod_vrr_params *vrr,
	839	+ enum vrr_packet_type packet_type,
	840	+ enum color_transfer_func app_tf,
	841	+ struct dc_info_packet *infopacket)
	842	+{
	843	+ /* SPD info packet for FreeSync
	844	+ * VTEM info packet for HdmiVRR
	845	+ * Check if Freesync is supported. Return if false. If true,
	846	+ * set the corresponding bit in the info packet
	847	+ */
	848	+ if (!vrr->send_info_frame)
	849	+ return;
	850	+
	851	+ switch (packet_type) {
	852	+ case PACKET_TYPE_FS_V3:
	853	+#ifndef TRIM_FSFT
	854	+ // always populate with pixel rate.
	855	+ build_vrr_infopacket_v3(
	856	+ stream->signal, vrr,
	857	+ stream->timing.flags.FAST_TRANSPORT,
	858	+ (stream->timing.flags.FAST_TRANSPORT) ?
	859	+ stream->timing.fast_transport_output_rate_100hz :
	860	+ stream->timing.pix_clk_100hz,
	861	+ app_tf, infopacket);
	862	+#else
	863	+ build_vrr_infopacket_v3(stream->signal, vrr, app_tf, infopacket);
	864	+#endif
	865	+ break;
	866	+ case PACKET_TYPE_FS_V2:
	867	+ build_vrr_infopacket_v2(stream->signal, vrr, app_tf, infopacket);
	868	+ break;
	869	+ case PACKET_TYPE_VRR:
	870	+ case PACKET_TYPE_FS_V1:
	871	+ default:
	872	+ build_vrr_infopacket_v1(stream->signal, vrr, infopacket);
	873	+ }
	874	+}
	875	+
	876	+void mod_freesync_build_vrr_params(struct mod_freesync *mod_freesync,
	877	+ const struct dc_stream_state *stream,
	878	+ struct mod_freesync_config *in_config,
	879	+ struct mod_vrr_params *in_out_vrr)
	880	+{
1220	881	struct core_freesync *core_freesync = NULL;
1221		- struct dc_static_screen_events triggers = {0};
1222		- unsigned long long temp = 0;
	882	+ unsigned long long nominal_field_rate_in_uhz = 0;
	883	+ unsigned long long rounded_nominal_in_uhz = 0;
	884	+ unsigned int refresh_range = 0;
	885	+ unsigned long long min_refresh_in_uhz = 0;
	886	+ unsigned long long max_refresh_in_uhz = 0;
1223	887
1224	888	if (mod_freesync == NULL)
1225	889	return;
1226	890
1227	891	core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
1228	892
1229		- for (stream_index = 0; stream_index < num_streams; stream_index++) {
1230		- map_index = map_index_from_stream(core_freesync,
1231		- streams[stream_index]);
	893	+ /* Calculate nominal field rate for stream */
	894	+ nominal_field_rate_in_uhz =
	895	+ mod_freesync_calc_nominal_field_rate(stream);
1232	896
1233		- state = &core_freesync->map[map_index].state;
	897	+ min_refresh_in_uhz = in_config->min_refresh_in_uhz;
	898	+ max_refresh_in_uhz = in_config->max_refresh_in_uhz;
1234	899
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;
	900	+ // Full range may be larger than current video timing, so cap at nominal
	901	+ if (max_refresh_in_uhz > nominal_field_rate_in_uhz)
	902	+ max_refresh_in_uhz = nominal_field_rate_in_uhz;
1244	903
1245		- if (core_freesync->map[map_index].caps->supported) {
	904	+ // Full range may be larger than current video timing, so cap at nominal
	905	+ if (min_refresh_in_uhz > max_refresh_in_uhz)
	906	+ min_refresh_in_uhz = max_refresh_in_uhz;
1246	907
1247		- /* Update the stream */
1248		- update_stream(core_freesync, streams[stream_index]);
	908	+ // If a monitor reports exactly max refresh of 2x of min, enforce it on nominal
	909	+ rounded_nominal_in_uhz =
	910	+ div_u64(nominal_field_rate_in_uhz + 50000, 100000) * 100000;
	911	+ if (in_config->max_refresh_in_uhz == (2 * in_config->min_refresh_in_uhz) &&
	912	+ in_config->max_refresh_in_uhz == rounded_nominal_in_uhz)
	913	+ min_refresh_in_uhz = div_u64(nominal_field_rate_in_uhz, 2);
1249	914
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		- */
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		-
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)
	915	+ if (!vrr_settings_require_update(core_freesync,
	916	+ in_config, (unsigned int)min_refresh_in_uhz, (unsigned int)max_refresh_in_uhz,
	917	+ in_out_vrr))
1355	918	return;
1356	919
1357		- state->btr.program_btr = false;
	920	+ in_out_vrr->state = in_config->state;
	921	+ in_out_vrr->send_info_frame = in_config->vsif_supported;
1358	922
1359		- min_frame_duration_in_ns = ((unsigned int) (div64_u64(
1360		- (1000000000ULL * 1000000),
1361		- state->nominal_refresh_rate_in_micro_hz)));
	923	+ if (in_config->state == VRR_STATE_UNSUPPORTED) {
	924	+ in_out_vrr->state = VRR_STATE_UNSUPPORTED;
	925	+ in_out_vrr->supported = false;
	926	+ in_out_vrr->adjust.v_total_min = stream->timing.v_total;
	927	+ in_out_vrr->adjust.v_total_max = stream->timing.v_total;
1362	928
1363		- /* Program BTR */
	929	+ return;
1364	930
1365		- /* BTR set to "not active" so disengage */
1366		- if (!state->btr.btr_active)
	931	+ } else {
	932	+ in_out_vrr->min_refresh_in_uhz = (unsigned int)min_refresh_in_uhz;
	933	+ in_out_vrr->max_duration_in_us =
	934	+ calc_duration_in_us_from_refresh_in_uhz(
	935	+ (unsigned int)min_refresh_in_uhz);
	936	+
	937	+ in_out_vrr->max_refresh_in_uhz = (unsigned int)max_refresh_in_uhz;
	938	+ in_out_vrr->min_duration_in_us =
	939	+ calc_duration_in_us_from_refresh_in_uhz(
	940	+ (unsigned int)max_refresh_in_uhz);
	941	+
	942	+ if (in_config->state == VRR_STATE_ACTIVE_FIXED)
	943	+ in_out_vrr->fixed_refresh_in_uhz = in_config->fixed_refresh_in_uhz;
	944	+ else
	945	+ in_out_vrr->fixed_refresh_in_uhz = 0;
	946	+
	947	+ refresh_range = div_u64(in_out_vrr->max_refresh_in_uhz + 500000, 1000000) -
	948	++ div_u64(in_out_vrr->min_refresh_in_uhz + 500000, 1000000);
	949	+
	950	+ in_out_vrr->supported = true;
	951	+ }
	952	+
	953	+ in_out_vrr->fixed.ramping_active = in_config->ramping;
	954	+
	955	+ in_out_vrr->btr.btr_enabled = in_config->btr;
	956	+
	957	+ if (in_out_vrr->max_refresh_in_uhz < (2 * in_out_vrr->min_refresh_in_uhz))
	958	+ in_out_vrr->btr.btr_enabled = false;
	959	+ else {
	960	+ in_out_vrr->btr.margin_in_us = in_out_vrr->max_duration_in_us -
	961	+ 2 * in_out_vrr->min_duration_in_us;
	962	+ if (in_out_vrr->btr.margin_in_us > BTR_MAX_MARGIN)
	963	+ in_out_vrr->btr.margin_in_us = BTR_MAX_MARGIN;
	964	+ }
	965	+
	966	+ in_out_vrr->btr.btr_active = false;
	967	+ in_out_vrr->btr.inserted_duration_in_us = 0;
	968	+ in_out_vrr->btr.frames_to_insert = 0;
	969	+ in_out_vrr->btr.frame_counter = 0;
	970	+ in_out_vrr->fixed.fixed_active = false;
	971	+ in_out_vrr->fixed.target_refresh_in_uhz = 0;
	972	+
	973	+ in_out_vrr->btr.mid_point_in_us =
	974	+ (in_out_vrr->min_duration_in_us +
	975	+ in_out_vrr->max_duration_in_us) / 2;
	976	+
	977	+ if (in_out_vrr->state == VRR_STATE_UNSUPPORTED) {
	978	+ in_out_vrr->adjust.v_total_min = stream->timing.v_total;
	979	+ in_out_vrr->adjust.v_total_max = stream->timing.v_total;
	980	+ } else if (in_out_vrr->state == VRR_STATE_DISABLED) {
	981	+ in_out_vrr->adjust.v_total_min = stream->timing.v_total;
	982	+ in_out_vrr->adjust.v_total_max = stream->timing.v_total;
	983	+ } else if (in_out_vrr->state == VRR_STATE_INACTIVE) {
	984	+ in_out_vrr->adjust.v_total_min = stream->timing.v_total;
	985	+ in_out_vrr->adjust.v_total_max = stream->timing.v_total;
	986	+ } else if (in_out_vrr->state == VRR_STATE_ACTIVE_VARIABLE &&
	987	+ refresh_range >= MIN_REFRESH_RANGE) {
	988	+
	989	+ in_out_vrr->adjust.v_total_min =
	990	+ calc_v_total_from_refresh(stream,
	991	+ in_out_vrr->max_refresh_in_uhz);
	992	+ in_out_vrr->adjust.v_total_max =
	993	+ calc_v_total_from_refresh(stream,
	994	+ in_out_vrr->min_refresh_in_uhz);
	995	+ } else if (in_out_vrr->state == VRR_STATE_ACTIVE_FIXED) {
	996	+ in_out_vrr->fixed.target_refresh_in_uhz =
	997	+ in_out_vrr->fixed_refresh_in_uhz;
	998	+ if (in_out_vrr->fixed.ramping_active &&
	999	+ in_out_vrr->fixed.fixed_active) {
	1000	+ /* Do not update vtotals if ramping is already active
	1001	+ * in order to continue ramp from current refresh.
	1002	+ */
	1003	+ in_out_vrr->fixed.fixed_active = true;
	1004	+ } else {
	1005	+ in_out_vrr->fixed.fixed_active = true;
	1006	+ in_out_vrr->adjust.v_total_min =
	1007	+ calc_v_total_from_refresh(stream,
	1008	+ in_out_vrr->fixed.target_refresh_in_uhz);
	1009	+ in_out_vrr->adjust.v_total_max =
	1010	+ in_out_vrr->adjust.v_total_min;
	1011	+ }
	1012	+ } else {
	1013	+ in_out_vrr->state = VRR_STATE_INACTIVE;
	1014	+ in_out_vrr->adjust.v_total_min = stream->timing.v_total;
	1015	+ in_out_vrr->adjust.v_total_max = stream->timing.v_total;
	1016	+ }
	1017	+}
	1018	+
	1019	+void mod_freesync_handle_preflip(struct mod_freesync *mod_freesync,
	1020	+ const struct dc_plane_state *plane,
	1021	+ const struct dc_stream_state *stream,
	1022	+ unsigned int curr_time_stamp_in_us,
	1023	+ struct mod_vrr_params *in_out_vrr)
	1024	+{
	1025	+ struct core_freesync *core_freesync = NULL;
	1026	+ unsigned int last_render_time_in_us = 0;
	1027	+ unsigned int average_render_time_in_us = 0;
	1028	+
	1029	+ if (mod_freesync == NULL)
	1030	+ return;
	1031	+
	1032	+ core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
	1033	+
	1034	+ if (in_out_vrr->supported &&
	1035	+ in_out_vrr->state == VRR_STATE_ACTIVE_VARIABLE) {
	1036	+ unsigned int i = 0;
	1037	+ unsigned int oldest_index = plane->time.index + 1;
	1038	+
	1039	+ if (oldest_index >= DC_PLANE_UPDATE_TIMES_MAX)
	1040	+ oldest_index = 0;
	1041	+
	1042	+ last_render_time_in_us = curr_time_stamp_in_us -
	1043	+ plane->time.prev_update_time_in_us;
	1044	+
	1045	+ // Sum off all entries except oldest one
	1046	+ for (i = 0; i < DC_PLANE_UPDATE_TIMES_MAX; i++) {
	1047	+ average_render_time_in_us +=
	1048	+ plane->time.time_elapsed_in_us[i];
	1049	+ }
	1050	+ average_render_time_in_us -=
	1051	+ plane->time.time_elapsed_in_us[oldest_index];
	1052	+
	1053	+ // Add render time for current flip
	1054	+ average_render_time_in_us += last_render_time_in_us;
	1055	+ average_render_time_in_us /= DC_PLANE_UPDATE_TIMES_MAX;
	1056	+
	1057	+ if (in_out_vrr->btr.btr_enabled) {
	1058	+ apply_below_the_range(core_freesync,
	1059	+ stream,
	1060	+ last_render_time_in_us,
	1061	+ in_out_vrr);
	1062	+ } else {
	1063	+ apply_fixed_refresh(core_freesync,
	1064	+ stream,
	1065	+ last_render_time_in_us,
	1066	+ in_out_vrr);
	1067	+ }
	1068	+
	1069	+ }
	1070	+}
	1071	+
	1072	+void mod_freesync_handle_v_update(struct mod_freesync *mod_freesync,
	1073	+ const struct dc_stream_state *stream,
	1074	+ struct mod_vrr_params *in_out_vrr)
	1075	+{
	1076	+ struct core_freesync *core_freesync = NULL;
	1077	+
	1078	+ if ((mod_freesync == NULL) \|\| (stream == NULL) \|\| (in_out_vrr == NULL))
	1079	+ return;
	1080	+
	1081	+ core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
	1082	+
	1083	+ if (in_out_vrr->supported == false)
	1084	+ return;
	1085	+
	1086	+ /* Below the Range Logic */
	1087	+
	1088	+ /* Only execute if in fullscreen mode */
	1089	+ if (in_out_vrr->state == VRR_STATE_ACTIVE_VARIABLE &&
	1090	+ in_out_vrr->btr.btr_active) {
	1091	+ /* TODO: pass in flag for Pre-DCE12 ASIC
	1092	+ * in order for frame variable duration to take affect,
	1093	+ * it needs to be done one VSYNC early, which is at
	1094	+ * frameCounter == 1.
	1095	+ * For DCE12 and newer updates to V_TOTAL_MIN/MAX
	1096	+ * will take affect on current frame
	1097	+ */
	1098	+ if (in_out_vrr->btr.frames_to_insert ==
	1099	+ in_out_vrr->btr.frame_counter) {
	1100	+ in_out_vrr->adjust.v_total_min =
	1101	+ calc_v_total_from_duration(stream,
	1102	+ in_out_vrr,
	1103	+ in_out_vrr->btr.inserted_duration_in_us);
	1104	+ in_out_vrr->adjust.v_total_max =
	1105	+ in_out_vrr->adjust.v_total_min;
	1106	+ }
	1107	+
	1108	+ if (in_out_vrr->btr.frame_counter > 0)
	1109	+ in_out_vrr->btr.frame_counter--;
1367	1110
1368	1111	/* 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);
	1112	+ if (in_out_vrr->btr.frame_counter == 0) {
	1113	+ in_out_vrr->adjust.v_total_min =
	1114	+ calc_v_total_from_refresh(stream,
	1115	+ in_out_vrr->max_refresh_in_uhz);
	1116	+ in_out_vrr->adjust.v_total_max =
	1117	+ calc_v_total_from_refresh(stream,
	1118	+ in_out_vrr->min_refresh_in_uhz);
1390	1119	}
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	1120	}
1437		-}
1438	1121
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;
	1122	+ /* If in fullscreen freesync mode or in video, do not program
	1123	+ * static screen ramp values
	1124	+ */
	1125	+ if (in_out_vrr->state == VRR_STATE_ACTIVE_VARIABLE)
	1126	+ in_out_vrr->fixed.ramping_active = false;
1444	1127
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		-
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		-
	1128	+ /* Gradual Static Screen Ramping Logic */
	1129	+ /* Execute if ramp is active and user enabled freesync static screen*/
	1130	+ if (in_out_vrr->state == VRR_STATE_ACTIVE_FIXED &&
	1131	+ in_out_vrr->fixed.ramping_active) {
	1132	+ update_v_total_for_static_ramp(
	1133	+ core_freesync, stream, in_out_vrr);
1514	1134	}
1515	1135	}
1516	1136
1517	1137	void mod_freesync_get_settings(struct mod_freesync *mod_freesync,
1518		- struct dc_stream_state **streams, int num_streams,
	1138	+ const struct mod_vrr_params *vrr,
1519	1139	unsigned int v_total_min, unsigned int v_total_max,
1520	1140	unsigned int *event_triggers,
1521	1141	unsigned int window_min, unsigned int window_max,
..	..	@@ -1523,33 +1143,94 @@
1523	1143	unsigned int *inserted_frames,
1524	1144	unsigned int *inserted_duration_in_us)
1525	1145	{
1526		- unsigned int stream_index, map_index;
1527		- struct core_freesync *core_freesync = NULL;
1528		-
1529	1146	if (mod_freesync == NULL)
1530	1147	return;
1531	1148
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		-
	1149	+ if (vrr->supported) {
	1150	+ *v_total_min = vrr->adjust.v_total_min;
	1151	+ *v_total_max = vrr->adjust.v_total_max;
	1152	+ *event_triggers = 0;
	1153	+ *lfc_mid_point_in_us = vrr->btr.mid_point_in_us;
	1154	+ *inserted_frames = vrr->btr.frames_to_insert;
	1155	+ *inserted_duration_in_us = vrr->btr.inserted_duration_in_us;
1553	1156	}
1554	1157	}
1555	1158
	1159	+unsigned long long mod_freesync_calc_nominal_field_rate(
	1160	+ const struct dc_stream_state *stream)
	1161	+{
	1162	+ unsigned long long nominal_field_rate_in_uhz = 0;
	1163	+ unsigned int total = stream->timing.h_total * stream->timing.v_total;
	1164	+
	1165	+ /* Calculate nominal field rate for stream, rounded up to nearest integer */
	1166	+ nominal_field_rate_in_uhz = stream->timing.pix_clk_100hz;
	1167	+ nominal_field_rate_in_uhz *= 100000000ULL;
	1168	+
	1169	+ nominal_field_rate_in_uhz = div_u64(nominal_field_rate_in_uhz, total);
	1170	+
	1171	+ return nominal_field_rate_in_uhz;
	1172	+}
	1173	+
	1174	+bool mod_freesync_is_valid_range(uint32_t min_refresh_cap_in_uhz,
	1175	+ uint32_t max_refresh_cap_in_uhz,
	1176	+ uint32_t nominal_field_rate_in_uhz)
	1177	+{
	1178	+
	1179	+ /* Typically nominal refresh calculated can have some fractional part.
	1180	+ * Allow for some rounding error of actual video timing by taking floor
	1181	+ * of caps and request. Round the nominal refresh rate.
	1182	+ *
	1183	+ * Dividing will convert everything to units in Hz although input
	1184	+ * variable name is in uHz!
	1185	+ *
	1186	+ * Also note, this takes care of rounding error on the nominal refresh
	1187	+ * so by rounding error we only expect it to be off by a small amount,
	1188	+ * such as < 0.1 Hz. i.e. 143.9xxx or 144.1xxx.
	1189	+ *
	1190	+ * Example 1. Caps Min = 40 Hz, Max = 144 Hz
	1191	+ * Request Min = 40 Hz, Max = 144 Hz
	1192	+ * Nominal = 143.5x Hz rounded to 144 Hz
	1193	+ * This function should allow this as valid request
	1194	+ *
	1195	+ * Example 2. Caps Min = 40 Hz, Max = 144 Hz
	1196	+ * Request Min = 40 Hz, Max = 144 Hz
	1197	+ * Nominal = 144.4x Hz rounded to 144 Hz
	1198	+ * This function should allow this as valid request
	1199	+ *
	1200	+ * Example 3. Caps Min = 40 Hz, Max = 144 Hz
	1201	+ * Request Min = 40 Hz, Max = 144 Hz
	1202	+ * Nominal = 120.xx Hz rounded to 120 Hz
	1203	+ * This function should return NOT valid since the requested
	1204	+ * max is greater than current timing's nominal
	1205	+ *
	1206	+ * Example 4. Caps Min = 40 Hz, Max = 120 Hz
	1207	+ * Request Min = 40 Hz, Max = 120 Hz
	1208	+ * Nominal = 144.xx Hz rounded to 144 Hz
	1209	+ * This function should return NOT valid since the nominal
	1210	+ * is greater than the capability's max refresh
	1211	+ */
	1212	+ nominal_field_rate_in_uhz =
	1213	+ div_u64(nominal_field_rate_in_uhz + 500000, 1000000);
	1214	+ min_refresh_cap_in_uhz /= 1000000;
	1215	+ max_refresh_cap_in_uhz /= 1000000;
	1216	+
	1217	+ // Check nominal is within range
	1218	+ if (nominal_field_rate_in_uhz > max_refresh_cap_in_uhz \|\|
	1219	+ nominal_field_rate_in_uhz < min_refresh_cap_in_uhz)
	1220	+ return false;
	1221	+
	1222	+ // If nominal is less than max, limit the max allowed refresh rate
	1223	+ if (nominal_field_rate_in_uhz < max_refresh_cap_in_uhz)
	1224	+ max_refresh_cap_in_uhz = nominal_field_rate_in_uhz;
	1225	+
	1226	+ // Check min is within range
	1227	+ if (min_refresh_cap_in_uhz > max_refresh_cap_in_uhz)
	1228	+ return false;
	1229	+
	1230	+ // For variable range, check for at least 10 Hz range
	1231	+ if (nominal_field_rate_in_uhz - min_refresh_cap_in_uhz < 10)
	1232	+ return false;
	1233	+
	1234	+ return true;
	1235	+}
	1236	+