1 /*
2 * Copyright 2012-15 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 <linux/slab.h>
27
28 #include "dm_services.h"
29
30
31 #include "dc_types.h"
32 #include "core_types.h"
33
34 #include "include/grph_object_id.h"
35 #include "include/logger_interface.h"
36
37 #include "dce_clock_source.h"
38 #include "clk_mgr.h"
39
40 #include "reg_helper.h"
41
42 #define REG(reg)\
43 (clk_src->regs->reg)
44
45 #define CTX \
46 clk_src->base.ctx
47
48 #define DC_LOGGER_INIT()
49
50 #undef FN
51 #define FN(reg_name, field_name) \
52 clk_src->cs_shift->field_name, clk_src->cs_mask->field_name
53
54 #define FRACT_FB_DIVIDER_DEC_POINTS_MAX_NUM 6
55 #define CALC_PLL_CLK_SRC_ERR_TOLERANCE 1
56 #define MAX_PLL_CALC_ERROR 0xFFFFFFFF
57
58 #define NUM_ELEMENTS(a) (sizeof(a) / sizeof((a)[0]))
59
get_ss_data_entry(struct dce110_clk_src * clk_src,enum signal_type signal,uint32_t pix_clk_khz)60 static const struct spread_spectrum_data *get_ss_data_entry(
61 struct dce110_clk_src *clk_src,
62 enum signal_type signal,
63 uint32_t pix_clk_khz)
64 {
65
66 uint32_t entrys_num;
67 uint32_t i;
68 struct spread_spectrum_data *ss_parm = NULL;
69 struct spread_spectrum_data *ret = NULL;
70
71 switch (signal) {
72 case SIGNAL_TYPE_DVI_SINGLE_LINK:
73 case SIGNAL_TYPE_DVI_DUAL_LINK:
74 ss_parm = clk_src->dvi_ss_params;
75 entrys_num = clk_src->dvi_ss_params_cnt;
76 break;
77
78 case SIGNAL_TYPE_HDMI_TYPE_A:
79 ss_parm = clk_src->hdmi_ss_params;
80 entrys_num = clk_src->hdmi_ss_params_cnt;
81 break;
82
83 case SIGNAL_TYPE_LVDS:
84 ss_parm = clk_src->lvds_ss_params;
85 entrys_num = clk_src->lvds_ss_params_cnt;
86 break;
87
88 case SIGNAL_TYPE_DISPLAY_PORT:
89 case SIGNAL_TYPE_DISPLAY_PORT_MST:
90 case SIGNAL_TYPE_EDP:
91 case SIGNAL_TYPE_VIRTUAL:
92 ss_parm = clk_src->dp_ss_params;
93 entrys_num = clk_src->dp_ss_params_cnt;
94 break;
95
96 default:
97 ss_parm = NULL;
98 entrys_num = 0;
99 break;
100 }
101
102 if (ss_parm == NULL)
103 return ret;
104
105 for (i = 0; i < entrys_num; ++i, ++ss_parm) {
106 if (ss_parm->freq_range_khz >= pix_clk_khz) {
107 ret = ss_parm;
108 break;
109 }
110 }
111
112 return ret;
113 }
114
115 /**
116 * Function: calculate_fb_and_fractional_fb_divider
117 *
118 * * DESCRIPTION: Calculates feedback and fractional feedback dividers values
119 *
120 *PARAMETERS:
121 * targetPixelClock Desired frequency in 100 Hz
122 * ref_divider Reference divider (already known)
123 * postDivider Post Divider (already known)
124 * feedback_divider_param Pointer where to store
125 * calculated feedback divider value
126 * fract_feedback_divider_param Pointer where to store
127 * calculated fract feedback divider value
128 *
129 *RETURNS:
130 * It fills the locations pointed by feedback_divider_param
131 * and fract_feedback_divider_param
132 * It returns - true if feedback divider not 0
133 * - false should never happen)
134 */
calculate_fb_and_fractional_fb_divider(struct calc_pll_clock_source * calc_pll_cs,uint32_t target_pix_clk_100hz,uint32_t ref_divider,uint32_t post_divider,uint32_t * feedback_divider_param,uint32_t * fract_feedback_divider_param)135 static bool calculate_fb_and_fractional_fb_divider(
136 struct calc_pll_clock_source *calc_pll_cs,
137 uint32_t target_pix_clk_100hz,
138 uint32_t ref_divider,
139 uint32_t post_divider,
140 uint32_t *feedback_divider_param,
141 uint32_t *fract_feedback_divider_param)
142 {
143 uint64_t feedback_divider;
144
145 feedback_divider =
146 (uint64_t)target_pix_clk_100hz * ref_divider * post_divider;
147 feedback_divider *= 10;
148 /* additional factor, since we divide by 10 afterwards */
149 feedback_divider *= (uint64_t)(calc_pll_cs->fract_fb_divider_factor);
150 feedback_divider = div_u64(feedback_divider, calc_pll_cs->ref_freq_khz * 10ull);
151
152 /*Round to the number of precision
153 * The following code replace the old code (ullfeedbackDivider + 5)/10
154 * for example if the difference between the number
155 * of fractional feedback decimal point and the fractional FB Divider precision
156 * is 2 then the equation becomes (ullfeedbackDivider + 5*100) / (10*100))*/
157
158 feedback_divider += 5ULL *
159 calc_pll_cs->fract_fb_divider_precision_factor;
160 feedback_divider =
161 div_u64(feedback_divider,
162 calc_pll_cs->fract_fb_divider_precision_factor * 10);
163 feedback_divider *= (uint64_t)
164 (calc_pll_cs->fract_fb_divider_precision_factor);
165
166 *feedback_divider_param =
167 div_u64_rem(
168 feedback_divider,
169 calc_pll_cs->fract_fb_divider_factor,
170 fract_feedback_divider_param);
171
172 if (*feedback_divider_param != 0)
173 return true;
174 return false;
175 }
176
177 /**
178 *calc_fb_divider_checking_tolerance
179 *
180 *DESCRIPTION: Calculates Feedback and Fractional Feedback divider values
181 * for passed Reference and Post divider, checking for tolerance.
182 *PARAMETERS:
183 * pll_settings Pointer to structure
184 * ref_divider Reference divider (already known)
185 * postDivider Post Divider (already known)
186 * tolerance Tolerance for Calculated Pixel Clock to be within
187 *
188 *RETURNS:
189 * It fills the PLLSettings structure with PLL Dividers values
190 * if calculated values are within required tolerance
191 * It returns - true if error is within tolerance
192 * - false if error is not within tolerance
193 */
calc_fb_divider_checking_tolerance(struct calc_pll_clock_source * calc_pll_cs,struct pll_settings * pll_settings,uint32_t ref_divider,uint32_t post_divider,uint32_t tolerance)194 static bool calc_fb_divider_checking_tolerance(
195 struct calc_pll_clock_source *calc_pll_cs,
196 struct pll_settings *pll_settings,
197 uint32_t ref_divider,
198 uint32_t post_divider,
199 uint32_t tolerance)
200 {
201 uint32_t feedback_divider;
202 uint32_t fract_feedback_divider;
203 uint32_t actual_calculated_clock_100hz;
204 uint32_t abs_err;
205 uint64_t actual_calc_clk_100hz;
206
207 calculate_fb_and_fractional_fb_divider(
208 calc_pll_cs,
209 pll_settings->adjusted_pix_clk_100hz,
210 ref_divider,
211 post_divider,
212 &feedback_divider,
213 &fract_feedback_divider);
214
215 /*Actual calculated value*/
216 actual_calc_clk_100hz = (uint64_t)feedback_divider *
217 calc_pll_cs->fract_fb_divider_factor +
218 fract_feedback_divider;
219 actual_calc_clk_100hz *= calc_pll_cs->ref_freq_khz * 10;
220 actual_calc_clk_100hz =
221 div_u64(actual_calc_clk_100hz,
222 ref_divider * post_divider *
223 calc_pll_cs->fract_fb_divider_factor);
224
225 actual_calculated_clock_100hz = (uint32_t)(actual_calc_clk_100hz);
226
227 abs_err = (actual_calculated_clock_100hz >
228 pll_settings->adjusted_pix_clk_100hz)
229 ? actual_calculated_clock_100hz -
230 pll_settings->adjusted_pix_clk_100hz
231 : pll_settings->adjusted_pix_clk_100hz -
232 actual_calculated_clock_100hz;
233
234 if (abs_err <= tolerance) {
235 /*found good values*/
236 pll_settings->reference_freq = calc_pll_cs->ref_freq_khz;
237 pll_settings->reference_divider = ref_divider;
238 pll_settings->feedback_divider = feedback_divider;
239 pll_settings->fract_feedback_divider = fract_feedback_divider;
240 pll_settings->pix_clk_post_divider = post_divider;
241 pll_settings->calculated_pix_clk_100hz =
242 actual_calculated_clock_100hz;
243 pll_settings->vco_freq =
244 actual_calculated_clock_100hz * post_divider / 10;
245 return true;
246 }
247 return false;
248 }
249
calc_pll_dividers_in_range(struct calc_pll_clock_source * calc_pll_cs,struct pll_settings * pll_settings,uint32_t min_ref_divider,uint32_t max_ref_divider,uint32_t min_post_divider,uint32_t max_post_divider,uint32_t err_tolerance)250 static bool calc_pll_dividers_in_range(
251 struct calc_pll_clock_source *calc_pll_cs,
252 struct pll_settings *pll_settings,
253 uint32_t min_ref_divider,
254 uint32_t max_ref_divider,
255 uint32_t min_post_divider,
256 uint32_t max_post_divider,
257 uint32_t err_tolerance)
258 {
259 uint32_t ref_divider;
260 uint32_t post_divider;
261 uint32_t tolerance;
262
263 /* This is err_tolerance / 10000 = 0.0025 - acceptable error of 0.25%
264 * This is errorTolerance / 10000 = 0.0001 - acceptable error of 0.01%*/
265 tolerance = (pll_settings->adjusted_pix_clk_100hz * err_tolerance) /
266 100000;
267 if (tolerance < CALC_PLL_CLK_SRC_ERR_TOLERANCE)
268 tolerance = CALC_PLL_CLK_SRC_ERR_TOLERANCE;
269
270 for (
271 post_divider = max_post_divider;
272 post_divider >= min_post_divider;
273 --post_divider) {
274 for (
275 ref_divider = min_ref_divider;
276 ref_divider <= max_ref_divider;
277 ++ref_divider) {
278 if (calc_fb_divider_checking_tolerance(
279 calc_pll_cs,
280 pll_settings,
281 ref_divider,
282 post_divider,
283 tolerance)) {
284 return true;
285 }
286 }
287 }
288
289 return false;
290 }
291
calculate_pixel_clock_pll_dividers(struct calc_pll_clock_source * calc_pll_cs,struct pll_settings * pll_settings)292 static uint32_t calculate_pixel_clock_pll_dividers(
293 struct calc_pll_clock_source *calc_pll_cs,
294 struct pll_settings *pll_settings)
295 {
296 uint32_t err_tolerance;
297 uint32_t min_post_divider;
298 uint32_t max_post_divider;
299 uint32_t min_ref_divider;
300 uint32_t max_ref_divider;
301
302 if (pll_settings->adjusted_pix_clk_100hz == 0) {
303 DC_LOG_ERROR(
304 "%s Bad requested pixel clock", __func__);
305 return MAX_PLL_CALC_ERROR;
306 }
307
308 /* 1) Find Post divider ranges */
309 if (pll_settings->pix_clk_post_divider) {
310 min_post_divider = pll_settings->pix_clk_post_divider;
311 max_post_divider = pll_settings->pix_clk_post_divider;
312 } else {
313 min_post_divider = calc_pll_cs->min_pix_clock_pll_post_divider;
314 if (min_post_divider * pll_settings->adjusted_pix_clk_100hz <
315 calc_pll_cs->min_vco_khz * 10) {
316 min_post_divider = calc_pll_cs->min_vco_khz * 10 /
317 pll_settings->adjusted_pix_clk_100hz;
318 if ((min_post_divider *
319 pll_settings->adjusted_pix_clk_100hz) <
320 calc_pll_cs->min_vco_khz * 10)
321 min_post_divider++;
322 }
323
324 max_post_divider = calc_pll_cs->max_pix_clock_pll_post_divider;
325 if (max_post_divider * pll_settings->adjusted_pix_clk_100hz
326 > calc_pll_cs->max_vco_khz * 10)
327 max_post_divider = calc_pll_cs->max_vco_khz * 10 /
328 pll_settings->adjusted_pix_clk_100hz;
329 }
330
331 /* 2) Find Reference divider ranges
332 * When SS is enabled, or for Display Port even without SS,
333 * pll_settings->referenceDivider is not zero.
334 * So calculate PPLL FB and fractional FB divider
335 * using the passed reference divider*/
336
337 if (pll_settings->reference_divider) {
338 min_ref_divider = pll_settings->reference_divider;
339 max_ref_divider = pll_settings->reference_divider;
340 } else {
341 min_ref_divider = ((calc_pll_cs->ref_freq_khz
342 / calc_pll_cs->max_pll_input_freq_khz)
343 > calc_pll_cs->min_pll_ref_divider)
344 ? calc_pll_cs->ref_freq_khz
345 / calc_pll_cs->max_pll_input_freq_khz
346 : calc_pll_cs->min_pll_ref_divider;
347
348 max_ref_divider = ((calc_pll_cs->ref_freq_khz
349 / calc_pll_cs->min_pll_input_freq_khz)
350 < calc_pll_cs->max_pll_ref_divider)
351 ? calc_pll_cs->ref_freq_khz /
352 calc_pll_cs->min_pll_input_freq_khz
353 : calc_pll_cs->max_pll_ref_divider;
354 }
355
356 /* If some parameters are invalid we could have scenario when "min">"max"
357 * which produced endless loop later.
358 * We should investigate why we get the wrong parameters.
359 * But to follow the similar logic when "adjustedPixelClock" is set to be 0
360 * it is better to return here than cause system hang/watchdog timeout later.
361 * ## SVS Wed 15 Jul 2009 */
362
363 if (min_post_divider > max_post_divider) {
364 DC_LOG_ERROR(
365 "%s Post divider range is invalid", __func__);
366 return MAX_PLL_CALC_ERROR;
367 }
368
369 if (min_ref_divider > max_ref_divider) {
370 DC_LOG_ERROR(
371 "%s Reference divider range is invalid", __func__);
372 return MAX_PLL_CALC_ERROR;
373 }
374
375 /* 3) Try to find PLL dividers given ranges
376 * starting with minimal error tolerance.
377 * Increase error tolerance until PLL dividers found*/
378 err_tolerance = MAX_PLL_CALC_ERROR;
379
380 while (!calc_pll_dividers_in_range(
381 calc_pll_cs,
382 pll_settings,
383 min_ref_divider,
384 max_ref_divider,
385 min_post_divider,
386 max_post_divider,
387 err_tolerance))
388 err_tolerance += (err_tolerance > 10)
389 ? (err_tolerance / 10)
390 : 1;
391
392 return err_tolerance;
393 }
394
pll_adjust_pix_clk(struct dce110_clk_src * clk_src,struct pixel_clk_params * pix_clk_params,struct pll_settings * pll_settings)395 static bool pll_adjust_pix_clk(
396 struct dce110_clk_src *clk_src,
397 struct pixel_clk_params *pix_clk_params,
398 struct pll_settings *pll_settings)
399 {
400 uint32_t actual_pix_clk_100hz = 0;
401 uint32_t requested_clk_100hz = 0;
402 struct bp_adjust_pixel_clock_parameters bp_adjust_pixel_clock_params = {
403 0 };
404 enum bp_result bp_result;
405 switch (pix_clk_params->signal_type) {
406 case SIGNAL_TYPE_HDMI_TYPE_A: {
407 requested_clk_100hz = pix_clk_params->requested_pix_clk_100hz;
408 if (pix_clk_params->pixel_encoding != PIXEL_ENCODING_YCBCR422) {
409 switch (pix_clk_params->color_depth) {
410 case COLOR_DEPTH_101010:
411 requested_clk_100hz = (requested_clk_100hz * 5) >> 2;
412 break; /* x1.25*/
413 case COLOR_DEPTH_121212:
414 requested_clk_100hz = (requested_clk_100hz * 6) >> 2;
415 break; /* x1.5*/
416 case COLOR_DEPTH_161616:
417 requested_clk_100hz = requested_clk_100hz * 2;
418 break; /* x2.0*/
419 default:
420 break;
421 }
422 }
423 actual_pix_clk_100hz = requested_clk_100hz;
424 }
425 break;
426
427 case SIGNAL_TYPE_DISPLAY_PORT:
428 case SIGNAL_TYPE_DISPLAY_PORT_MST:
429 case SIGNAL_TYPE_EDP:
430 requested_clk_100hz = pix_clk_params->requested_sym_clk * 10;
431 actual_pix_clk_100hz = pix_clk_params->requested_pix_clk_100hz;
432 break;
433
434 default:
435 requested_clk_100hz = pix_clk_params->requested_pix_clk_100hz;
436 actual_pix_clk_100hz = pix_clk_params->requested_pix_clk_100hz;
437 break;
438 }
439
440 bp_adjust_pixel_clock_params.pixel_clock = requested_clk_100hz / 10;
441 bp_adjust_pixel_clock_params.
442 encoder_object_id = pix_clk_params->encoder_object_id;
443 bp_adjust_pixel_clock_params.signal_type = pix_clk_params->signal_type;
444 bp_adjust_pixel_clock_params.
445 ss_enable = pix_clk_params->flags.ENABLE_SS;
446 bp_result = clk_src->bios->funcs->adjust_pixel_clock(
447 clk_src->bios, &bp_adjust_pixel_clock_params);
448 if (bp_result == BP_RESULT_OK) {
449 pll_settings->actual_pix_clk_100hz = actual_pix_clk_100hz;
450 pll_settings->adjusted_pix_clk_100hz =
451 bp_adjust_pixel_clock_params.adjusted_pixel_clock * 10;
452 pll_settings->reference_divider =
453 bp_adjust_pixel_clock_params.reference_divider;
454 pll_settings->pix_clk_post_divider =
455 bp_adjust_pixel_clock_params.pixel_clock_post_divider;
456
457 return true;
458 }
459
460 return false;
461 }
462
463 /**
464 * Calculate PLL Dividers for given Clock Value.
465 * First will call VBIOS Adjust Exec table to check if requested Pixel clock
466 * will be Adjusted based on usage.
467 * Then it will calculate PLL Dividers for this Adjusted clock using preferred
468 * method (Maximum VCO frequency).
469 *
470 * \return
471 * Calculation error in units of 0.01%
472 */
473
dce110_get_pix_clk_dividers_helper(struct dce110_clk_src * clk_src,struct pll_settings * pll_settings,struct pixel_clk_params * pix_clk_params)474 static uint32_t dce110_get_pix_clk_dividers_helper (
475 struct dce110_clk_src *clk_src,
476 struct pll_settings *pll_settings,
477 struct pixel_clk_params *pix_clk_params)
478 {
479 uint32_t field = 0;
480 uint32_t pll_calc_error = MAX_PLL_CALC_ERROR;
481 DC_LOGGER_INIT();
482 /* Check if reference clock is external (not pcie/xtalin)
483 * HW Dce80 spec:
484 * 00 - PCIE_REFCLK, 01 - XTALIN, 02 - GENERICA, 03 - GENERICB
485 * 04 - HSYNCA, 05 - GENLK_CLK, 06 - PCIE_REFCLK, 07 - DVOCLK0 */
486 REG_GET(PLL_CNTL, PLL_REF_DIV_SRC, &field);
487 pll_settings->use_external_clk = (field > 1);
488
489 /* VBIOS by default enables DP SS (spread on IDCLK) for DCE 8.0 always
490 * (we do not care any more from SI for some older DP Sink which
491 * does not report SS support, no known issues) */
492 if ((pix_clk_params->flags.ENABLE_SS) ||
493 (dc_is_dp_signal(pix_clk_params->signal_type))) {
494
495 const struct spread_spectrum_data *ss_data = get_ss_data_entry(
496 clk_src,
497 pix_clk_params->signal_type,
498 pll_settings->adjusted_pix_clk_100hz / 10);
499
500 if (NULL != ss_data)
501 pll_settings->ss_percentage = ss_data->percentage;
502 }
503
504 /* Check VBIOS AdjustPixelClock Exec table */
505 if (!pll_adjust_pix_clk(clk_src, pix_clk_params, pll_settings)) {
506 /* Should never happen, ASSERT and fill up values to be able
507 * to continue. */
508 DC_LOG_ERROR(
509 "%s: Failed to adjust pixel clock!!", __func__);
510 pll_settings->actual_pix_clk_100hz =
511 pix_clk_params->requested_pix_clk_100hz;
512 pll_settings->adjusted_pix_clk_100hz =
513 pix_clk_params->requested_pix_clk_100hz;
514
515 if (dc_is_dp_signal(pix_clk_params->signal_type))
516 pll_settings->adjusted_pix_clk_100hz = 1000000;
517 }
518
519 /* Calculate Dividers */
520 if (pix_clk_params->signal_type == SIGNAL_TYPE_HDMI_TYPE_A)
521 /*Calculate Dividers by HDMI object, no SS case or SS case */
522 pll_calc_error =
523 calculate_pixel_clock_pll_dividers(
524 &clk_src->calc_pll_hdmi,
525 pll_settings);
526 else
527 /*Calculate Dividers by default object, no SS case or SS case */
528 pll_calc_error =
529 calculate_pixel_clock_pll_dividers(
530 &clk_src->calc_pll,
531 pll_settings);
532
533 return pll_calc_error;
534 }
535
dce112_get_pix_clk_dividers_helper(struct dce110_clk_src * clk_src,struct pll_settings * pll_settings,struct pixel_clk_params * pix_clk_params)536 static void dce112_get_pix_clk_dividers_helper (
537 struct dce110_clk_src *clk_src,
538 struct pll_settings *pll_settings,
539 struct pixel_clk_params *pix_clk_params)
540 {
541 uint32_t actual_pixel_clock_100hz;
542
543 actual_pixel_clock_100hz = pix_clk_params->requested_pix_clk_100hz;
544 /* Calculate Dividers */
545 if (pix_clk_params->signal_type == SIGNAL_TYPE_HDMI_TYPE_A) {
546 switch (pix_clk_params->color_depth) {
547 case COLOR_DEPTH_101010:
548 actual_pixel_clock_100hz = (actual_pixel_clock_100hz * 5) >> 2;
549 break;
550 case COLOR_DEPTH_121212:
551 actual_pixel_clock_100hz = (actual_pixel_clock_100hz * 6) >> 2;
552 break;
553 case COLOR_DEPTH_161616:
554 actual_pixel_clock_100hz = actual_pixel_clock_100hz * 2;
555 break;
556 default:
557 break;
558 }
559 }
560 pll_settings->actual_pix_clk_100hz = actual_pixel_clock_100hz;
561 pll_settings->adjusted_pix_clk_100hz = actual_pixel_clock_100hz;
562 pll_settings->calculated_pix_clk_100hz = pix_clk_params->requested_pix_clk_100hz;
563 }
564
dce110_get_pix_clk_dividers(struct clock_source * cs,struct pixel_clk_params * pix_clk_params,struct pll_settings * pll_settings)565 static uint32_t dce110_get_pix_clk_dividers(
566 struct clock_source *cs,
567 struct pixel_clk_params *pix_clk_params,
568 struct pll_settings *pll_settings)
569 {
570 struct dce110_clk_src *clk_src = TO_DCE110_CLK_SRC(cs);
571 uint32_t pll_calc_error = MAX_PLL_CALC_ERROR;
572 DC_LOGGER_INIT();
573
574 if (pix_clk_params == NULL || pll_settings == NULL
575 || pix_clk_params->requested_pix_clk_100hz == 0) {
576 DC_LOG_ERROR(
577 "%s: Invalid parameters!!\n", __func__);
578 return pll_calc_error;
579 }
580
581 memset(pll_settings, 0, sizeof(*pll_settings));
582
583 if (cs->id == CLOCK_SOURCE_ID_DP_DTO ||
584 cs->id == CLOCK_SOURCE_ID_EXTERNAL) {
585 pll_settings->adjusted_pix_clk_100hz = clk_src->ext_clk_khz * 10;
586 pll_settings->calculated_pix_clk_100hz = clk_src->ext_clk_khz * 10;
587 pll_settings->actual_pix_clk_100hz =
588 pix_clk_params->requested_pix_clk_100hz;
589 return 0;
590 }
591
592 pll_calc_error = dce110_get_pix_clk_dividers_helper(clk_src,
593 pll_settings, pix_clk_params);
594
595 return pll_calc_error;
596 }
597
dce112_get_pix_clk_dividers(struct clock_source * cs,struct pixel_clk_params * pix_clk_params,struct pll_settings * pll_settings)598 static uint32_t dce112_get_pix_clk_dividers(
599 struct clock_source *cs,
600 struct pixel_clk_params *pix_clk_params,
601 struct pll_settings *pll_settings)
602 {
603 struct dce110_clk_src *clk_src = TO_DCE110_CLK_SRC(cs);
604 DC_LOGGER_INIT();
605
606 if (pix_clk_params == NULL || pll_settings == NULL
607 || pix_clk_params->requested_pix_clk_100hz == 0) {
608 DC_LOG_ERROR(
609 "%s: Invalid parameters!!\n", __func__);
610 return -1;
611 }
612
613 memset(pll_settings, 0, sizeof(*pll_settings));
614
615 if (cs->id == CLOCK_SOURCE_ID_DP_DTO ||
616 cs->id == CLOCK_SOURCE_ID_EXTERNAL) {
617 pll_settings->adjusted_pix_clk_100hz = clk_src->ext_clk_khz * 10;
618 pll_settings->calculated_pix_clk_100hz = clk_src->ext_clk_khz * 10;
619 pll_settings->actual_pix_clk_100hz =
620 pix_clk_params->requested_pix_clk_100hz;
621 return -1;
622 }
623
624 dce112_get_pix_clk_dividers_helper(clk_src,
625 pll_settings, pix_clk_params);
626
627 return 0;
628 }
629
disable_spread_spectrum(struct dce110_clk_src * clk_src)630 static bool disable_spread_spectrum(struct dce110_clk_src *clk_src)
631 {
632 enum bp_result result;
633 struct bp_spread_spectrum_parameters bp_ss_params = {0};
634
635 bp_ss_params.pll_id = clk_src->base.id;
636
637 /*Call ASICControl to process ATOMBIOS Exec table*/
638 result = clk_src->bios->funcs->enable_spread_spectrum_on_ppll(
639 clk_src->bios,
640 &bp_ss_params,
641 false);
642
643 return result == BP_RESULT_OK;
644 }
645
calculate_ss(const struct pll_settings * pll_settings,const struct spread_spectrum_data * ss_data,struct delta_sigma_data * ds_data)646 static bool calculate_ss(
647 const struct pll_settings *pll_settings,
648 const struct spread_spectrum_data *ss_data,
649 struct delta_sigma_data *ds_data)
650 {
651 struct fixed31_32 fb_div;
652 struct fixed31_32 ss_amount;
653 struct fixed31_32 ss_nslip_amount;
654 struct fixed31_32 ss_ds_frac_amount;
655 struct fixed31_32 ss_step_size;
656 struct fixed31_32 modulation_time;
657
658 if (ds_data == NULL)
659 return false;
660 if (ss_data == NULL)
661 return false;
662 if (ss_data->percentage == 0)
663 return false;
664 if (pll_settings == NULL)
665 return false;
666
667 memset(ds_data, 0, sizeof(struct delta_sigma_data));
668
669 /* compute SS_AMOUNT_FBDIV & SS_AMOUNT_NFRAC_SLIP & SS_AMOUNT_DSFRAC*/
670 /* 6 decimal point support in fractional feedback divider */
671 fb_div = dc_fixpt_from_fraction(
672 pll_settings->fract_feedback_divider, 1000000);
673 fb_div = dc_fixpt_add_int(fb_div, pll_settings->feedback_divider);
674
675 ds_data->ds_frac_amount = 0;
676 /*spreadSpectrumPercentage is in the unit of .01%,
677 * so have to divided by 100 * 100*/
678 ss_amount = dc_fixpt_mul(
679 fb_div, dc_fixpt_from_fraction(ss_data->percentage,
680 100 * ss_data->percentage_divider));
681 ds_data->feedback_amount = dc_fixpt_floor(ss_amount);
682
683 ss_nslip_amount = dc_fixpt_sub(ss_amount,
684 dc_fixpt_from_int(ds_data->feedback_amount));
685 ss_nslip_amount = dc_fixpt_mul_int(ss_nslip_amount, 10);
686 ds_data->nfrac_amount = dc_fixpt_floor(ss_nslip_amount);
687
688 ss_ds_frac_amount = dc_fixpt_sub(ss_nslip_amount,
689 dc_fixpt_from_int(ds_data->nfrac_amount));
690 ss_ds_frac_amount = dc_fixpt_mul_int(ss_ds_frac_amount, 65536);
691 ds_data->ds_frac_amount = dc_fixpt_floor(ss_ds_frac_amount);
692
693 /* compute SS_STEP_SIZE_DSFRAC */
694 modulation_time = dc_fixpt_from_fraction(
695 pll_settings->reference_freq * 1000,
696 pll_settings->reference_divider * ss_data->modulation_freq_hz);
697
698 if (ss_data->flags.CENTER_SPREAD)
699 modulation_time = dc_fixpt_div_int(modulation_time, 4);
700 else
701 modulation_time = dc_fixpt_div_int(modulation_time, 2);
702
703 ss_step_size = dc_fixpt_div(ss_amount, modulation_time);
704 /* SS_STEP_SIZE_DSFRAC_DEC = Int(SS_STEP_SIZE * 2 ^ 16 * 10)*/
705 ss_step_size = dc_fixpt_mul_int(ss_step_size, 65536 * 10);
706 ds_data->ds_frac_size = dc_fixpt_floor(ss_step_size);
707
708 return true;
709 }
710
enable_spread_spectrum(struct dce110_clk_src * clk_src,enum signal_type signal,struct pll_settings * pll_settings)711 static bool enable_spread_spectrum(
712 struct dce110_clk_src *clk_src,
713 enum signal_type signal, struct pll_settings *pll_settings)
714 {
715 struct bp_spread_spectrum_parameters bp_params = {0};
716 struct delta_sigma_data d_s_data;
717 const struct spread_spectrum_data *ss_data = NULL;
718
719 ss_data = get_ss_data_entry(
720 clk_src,
721 signal,
722 pll_settings->calculated_pix_clk_100hz / 10);
723
724 /* Pixel clock PLL has been programmed to generate desired pixel clock,
725 * now enable SS on pixel clock */
726 /* TODO is it OK to return true not doing anything ??*/
727 if (ss_data != NULL && pll_settings->ss_percentage != 0) {
728 if (calculate_ss(pll_settings, ss_data, &d_s_data)) {
729 bp_params.ds.feedback_amount =
730 d_s_data.feedback_amount;
731 bp_params.ds.nfrac_amount =
732 d_s_data.nfrac_amount;
733 bp_params.ds.ds_frac_size = d_s_data.ds_frac_size;
734 bp_params.ds_frac_amount =
735 d_s_data.ds_frac_amount;
736 bp_params.flags.DS_TYPE = 1;
737 bp_params.pll_id = clk_src->base.id;
738 bp_params.percentage = ss_data->percentage;
739 if (ss_data->flags.CENTER_SPREAD)
740 bp_params.flags.CENTER_SPREAD = 1;
741 if (ss_data->flags.EXTERNAL_SS)
742 bp_params.flags.EXTERNAL_SS = 1;
743
744 if (BP_RESULT_OK !=
745 clk_src->bios->funcs->
746 enable_spread_spectrum_on_ppll(
747 clk_src->bios,
748 &bp_params,
749 true))
750 return false;
751 } else
752 return false;
753 }
754 return true;
755 }
756
dce110_program_pixel_clk_resync(struct dce110_clk_src * clk_src,enum signal_type signal_type,enum dc_color_depth colordepth)757 static void dce110_program_pixel_clk_resync(
758 struct dce110_clk_src *clk_src,
759 enum signal_type signal_type,
760 enum dc_color_depth colordepth)
761 {
762 REG_UPDATE(RESYNC_CNTL,
763 DCCG_DEEP_COLOR_CNTL1, 0);
764 /*
765 24 bit mode: TMDS clock = 1.0 x pixel clock (1:1)
766 30 bit mode: TMDS clock = 1.25 x pixel clock (5:4)
767 36 bit mode: TMDS clock = 1.5 x pixel clock (3:2)
768 48 bit mode: TMDS clock = 2 x pixel clock (2:1)
769 */
770 if (signal_type != SIGNAL_TYPE_HDMI_TYPE_A)
771 return;
772
773 switch (colordepth) {
774 case COLOR_DEPTH_888:
775 REG_UPDATE(RESYNC_CNTL,
776 DCCG_DEEP_COLOR_CNTL1, 0);
777 break;
778 case COLOR_DEPTH_101010:
779 REG_UPDATE(RESYNC_CNTL,
780 DCCG_DEEP_COLOR_CNTL1, 1);
781 break;
782 case COLOR_DEPTH_121212:
783 REG_UPDATE(RESYNC_CNTL,
784 DCCG_DEEP_COLOR_CNTL1, 2);
785 break;
786 case COLOR_DEPTH_161616:
787 REG_UPDATE(RESYNC_CNTL,
788 DCCG_DEEP_COLOR_CNTL1, 3);
789 break;
790 default:
791 break;
792 }
793 }
794
dce112_program_pixel_clk_resync(struct dce110_clk_src * clk_src,enum signal_type signal_type,enum dc_color_depth colordepth,bool enable_ycbcr420)795 static void dce112_program_pixel_clk_resync(
796 struct dce110_clk_src *clk_src,
797 enum signal_type signal_type,
798 enum dc_color_depth colordepth,
799 bool enable_ycbcr420)
800 {
801 uint32_t deep_color_cntl = 0;
802 uint32_t double_rate_enable = 0;
803
804 /*
805 24 bit mode: TMDS clock = 1.0 x pixel clock (1:1)
806 30 bit mode: TMDS clock = 1.25 x pixel clock (5:4)
807 36 bit mode: TMDS clock = 1.5 x pixel clock (3:2)
808 48 bit mode: TMDS clock = 2 x pixel clock (2:1)
809 */
810 if (signal_type == SIGNAL_TYPE_HDMI_TYPE_A) {
811 double_rate_enable = enable_ycbcr420 ? 1 : 0;
812
813 switch (colordepth) {
814 case COLOR_DEPTH_888:
815 deep_color_cntl = 0;
816 break;
817 case COLOR_DEPTH_101010:
818 deep_color_cntl = 1;
819 break;
820 case COLOR_DEPTH_121212:
821 deep_color_cntl = 2;
822 break;
823 case COLOR_DEPTH_161616:
824 deep_color_cntl = 3;
825 break;
826 default:
827 break;
828 }
829 }
830
831 if (clk_src->cs_mask->PHYPLLA_PIXCLK_DOUBLE_RATE_ENABLE)
832 REG_UPDATE_2(PIXCLK_RESYNC_CNTL,
833 PHYPLLA_DCCG_DEEP_COLOR_CNTL, deep_color_cntl,
834 PHYPLLA_PIXCLK_DOUBLE_RATE_ENABLE, double_rate_enable);
835 else
836 REG_UPDATE(PIXCLK_RESYNC_CNTL,
837 PHYPLLA_DCCG_DEEP_COLOR_CNTL, deep_color_cntl);
838
839 }
840
dce110_program_pix_clk(struct clock_source * clock_source,struct pixel_clk_params * pix_clk_params,struct pll_settings * pll_settings)841 static bool dce110_program_pix_clk(
842 struct clock_source *clock_source,
843 struct pixel_clk_params *pix_clk_params,
844 struct pll_settings *pll_settings)
845 {
846 struct dce110_clk_src *clk_src = TO_DCE110_CLK_SRC(clock_source);
847 struct bp_pixel_clock_parameters bp_pc_params = {0};
848
849 /* First disable SS
850 * ATOMBIOS will enable by default SS on PLL for DP,
851 * do not disable it here
852 */
853 if (clock_source->id != CLOCK_SOURCE_ID_EXTERNAL &&
854 !dc_is_dp_signal(pix_clk_params->signal_type) &&
855 clock_source->ctx->dce_version <= DCE_VERSION_11_0)
856 disable_spread_spectrum(clk_src);
857
858 /*ATOMBIOS expects pixel rate adjusted by deep color ratio)*/
859 bp_pc_params.controller_id = pix_clk_params->controller_id;
860 bp_pc_params.pll_id = clock_source->id;
861 bp_pc_params.target_pixel_clock_100hz = pll_settings->actual_pix_clk_100hz;
862 bp_pc_params.encoder_object_id = pix_clk_params->encoder_object_id;
863 bp_pc_params.signal_type = pix_clk_params->signal_type;
864
865 bp_pc_params.reference_divider = pll_settings->reference_divider;
866 bp_pc_params.feedback_divider = pll_settings->feedback_divider;
867 bp_pc_params.fractional_feedback_divider =
868 pll_settings->fract_feedback_divider;
869 bp_pc_params.pixel_clock_post_divider =
870 pll_settings->pix_clk_post_divider;
871 bp_pc_params.flags.SET_EXTERNAL_REF_DIV_SRC =
872 pll_settings->use_external_clk;
873
874 if (clk_src->bios->funcs->set_pixel_clock(
875 clk_src->bios, &bp_pc_params) != BP_RESULT_OK)
876 return false;
877 /* Enable SS
878 * ATOMBIOS will enable by default SS for DP on PLL ( DP ID clock),
879 * based on HW display PLL team, SS control settings should be programmed
880 * during PLL Reset, but they do not have effect
881 * until SS_EN is asserted.*/
882 if (clock_source->id != CLOCK_SOURCE_ID_EXTERNAL
883 && !dc_is_dp_signal(pix_clk_params->signal_type)) {
884
885 if (pix_clk_params->flags.ENABLE_SS)
886 if (!enable_spread_spectrum(clk_src,
887 pix_clk_params->signal_type,
888 pll_settings))
889 return false;
890
891 /* Resync deep color DTO */
892 dce110_program_pixel_clk_resync(clk_src,
893 pix_clk_params->signal_type,
894 pix_clk_params->color_depth);
895 }
896
897 return true;
898 }
899
dce112_program_pix_clk(struct clock_source * clock_source,struct pixel_clk_params * pix_clk_params,struct pll_settings * pll_settings)900 static bool dce112_program_pix_clk(
901 struct clock_source *clock_source,
902 struct pixel_clk_params *pix_clk_params,
903 struct pll_settings *pll_settings)
904 {
905 struct dce110_clk_src *clk_src = TO_DCE110_CLK_SRC(clock_source);
906 struct bp_pixel_clock_parameters bp_pc_params = {0};
907
908 #if defined(CONFIG_DRM_AMD_DC_DCN)
909 if (IS_FPGA_MAXIMUS_DC(clock_source->ctx->dce_environment)) {
910 unsigned int inst = pix_clk_params->controller_id - CONTROLLER_ID_D0;
911 unsigned dp_dto_ref_100hz = 7000000;
912 unsigned clock_100hz = pll_settings->actual_pix_clk_100hz;
913
914 /* Set DTO values: phase = target clock, modulo = reference clock */
915 REG_WRITE(PHASE[inst], clock_100hz);
916 REG_WRITE(MODULO[inst], dp_dto_ref_100hz);
917
918 /* Enable DTO */
919 REG_UPDATE(PIXEL_RATE_CNTL[inst], DP_DTO0_ENABLE, 1);
920 return true;
921 }
922 #endif
923 /* First disable SS
924 * ATOMBIOS will enable by default SS on PLL for DP,
925 * do not disable it here
926 */
927 if (clock_source->id != CLOCK_SOURCE_ID_EXTERNAL &&
928 !dc_is_dp_signal(pix_clk_params->signal_type) &&
929 clock_source->ctx->dce_version <= DCE_VERSION_11_0)
930 disable_spread_spectrum(clk_src);
931
932 /*ATOMBIOS expects pixel rate adjusted by deep color ratio)*/
933 bp_pc_params.controller_id = pix_clk_params->controller_id;
934 bp_pc_params.pll_id = clock_source->id;
935 bp_pc_params.target_pixel_clock_100hz = pll_settings->actual_pix_clk_100hz;
936 bp_pc_params.encoder_object_id = pix_clk_params->encoder_object_id;
937 bp_pc_params.signal_type = pix_clk_params->signal_type;
938
939 if (clock_source->id != CLOCK_SOURCE_ID_DP_DTO) {
940 bp_pc_params.flags.SET_GENLOCK_REF_DIV_SRC =
941 pll_settings->use_external_clk;
942 bp_pc_params.flags.SET_XTALIN_REF_SRC =
943 !pll_settings->use_external_clk;
944 if (pix_clk_params->flags.SUPPORT_YCBCR420) {
945 bp_pc_params.flags.SUPPORT_YUV_420 = 1;
946 }
947 }
948 if (clk_src->bios->funcs->set_pixel_clock(
949 clk_src->bios, &bp_pc_params) != BP_RESULT_OK)
950 return false;
951 /* Resync deep color DTO */
952 if (clock_source->id != CLOCK_SOURCE_ID_DP_DTO)
953 dce112_program_pixel_clk_resync(clk_src,
954 pix_clk_params->signal_type,
955 pix_clk_params->color_depth,
956 pix_clk_params->flags.SUPPORT_YCBCR420);
957
958 return true;
959 }
960
961
dce110_clock_source_power_down(struct clock_source * clk_src)962 static bool dce110_clock_source_power_down(
963 struct clock_source *clk_src)
964 {
965 struct dce110_clk_src *dce110_clk_src = TO_DCE110_CLK_SRC(clk_src);
966 enum bp_result bp_result;
967 struct bp_pixel_clock_parameters bp_pixel_clock_params = {0};
968
969 if (clk_src->dp_clk_src)
970 return true;
971
972 /* If Pixel Clock is 0 it means Power Down Pll*/
973 bp_pixel_clock_params.controller_id = CONTROLLER_ID_UNDEFINED;
974 bp_pixel_clock_params.pll_id = clk_src->id;
975 bp_pixel_clock_params.flags.FORCE_PROGRAMMING_OF_PLL = 1;
976
977 /*Call ASICControl to process ATOMBIOS Exec table*/
978 bp_result = dce110_clk_src->bios->funcs->set_pixel_clock(
979 dce110_clk_src->bios,
980 &bp_pixel_clock_params);
981
982 return bp_result == BP_RESULT_OK;
983 }
984
get_pixel_clk_frequency_100hz(const struct clock_source * clock_source,unsigned int inst,unsigned int * pixel_clk_khz)985 static bool get_pixel_clk_frequency_100hz(
986 const struct clock_source *clock_source,
987 unsigned int inst,
988 unsigned int *pixel_clk_khz)
989 {
990 struct dce110_clk_src *clk_src = TO_DCE110_CLK_SRC(clock_source);
991 unsigned int clock_hz = 0;
992
993 if (clock_source->id == CLOCK_SOURCE_ID_DP_DTO) {
994 clock_hz = REG_READ(PHASE[inst]);
995
996 /* NOTE: There is agreement with VBIOS here that MODULO is
997 * programmed equal to DPREFCLK, in which case PHASE will be
998 * equivalent to pixel clock.
999 */
1000 *pixel_clk_khz = clock_hz / 100;
1001 return true;
1002 }
1003
1004 return false;
1005 }
1006
1007 #if defined(CONFIG_DRM_AMD_DC_DCN3_0)
1008 /* this table is use to find *1.001 and /1.001 pixel rates from non-precise pixel rate */
1009 const struct pixel_rate_range_table_entry video_optimized_pixel_rates[] = {
1010 // /1.001 rates
1011 {25170, 25180, 25200, 1000, 1001}, //25.2MHz -> 25.17
1012 {59340, 59350, 59400, 1000, 1001}, //59.4Mhz -> 59.340
1013 {74170, 74180, 74250, 1000, 1001}, //74.25Mhz -> 74.1758
1014 {125870, 125880, 126000, 1000, 1001}, //126Mhz -> 125.87
1015 {148350, 148360, 148500, 1000, 1001}, //148.5Mhz -> 148.3516
1016 {167830, 167840, 168000, 1000, 1001}, //168Mhz -> 167.83
1017 {222520, 222530, 222750, 1000, 1001}, //222.75Mhz -> 222.527
1018 {257140, 257150, 257400, 1000, 1001}, //257.4Mhz -> 257.1429
1019 {296700, 296710, 297000, 1000, 1001}, //297Mhz -> 296.7033
1020 {342850, 342860, 343200, 1000, 1001}, //343.2Mhz -> 342.857
1021 {395600, 395610, 396000, 1000, 1001}, //396Mhz -> 395.6
1022 {409090, 409100, 409500, 1000, 1001}, //409.5Mhz -> 409.091
1023 {445050, 445060, 445500, 1000, 1001}, //445.5Mhz -> 445.055
1024 {467530, 467540, 468000, 1000, 1001}, //468Mhz -> 467.5325
1025 {519230, 519240, 519750, 1000, 1001}, //519.75Mhz -> 519.231
1026 {525970, 525980, 526500, 1000, 1001}, //526.5Mhz -> 525.974
1027 {545450, 545460, 546000, 1000, 1001}, //546Mhz -> 545.455
1028 {593400, 593410, 594000, 1000, 1001}, //594Mhz -> 593.4066
1029 {623370, 623380, 624000, 1000, 1001}, //624Mhz -> 623.377
1030 {692300, 692310, 693000, 1000, 1001}, //693Mhz -> 692.308
1031 {701290, 701300, 702000, 1000, 1001}, //702Mhz -> 701.2987
1032 {791200, 791210, 792000, 1000, 1001}, //792Mhz -> 791.209
1033 {890100, 890110, 891000, 1000, 1001}, //891Mhz -> 890.1099
1034 {1186810, 1186820, 1188000, 1000, 1001},//1188Mhz -> 1186.8131
1035
1036 // *1.001 rates
1037 {27020, 27030, 27000, 1001, 1000}, //27Mhz
1038 {54050, 54060, 54000, 1001, 1000}, //54Mhz
1039 {108100, 108110, 108000, 1001, 1000},//108Mhz
1040 };
1041
look_up_in_video_optimized_rate_tlb(unsigned int pixel_rate_khz)1042 const struct pixel_rate_range_table_entry *look_up_in_video_optimized_rate_tlb(
1043 unsigned int pixel_rate_khz)
1044 {
1045 int i;
1046
1047 for (i = 0; i < NUM_ELEMENTS(video_optimized_pixel_rates); i++) {
1048 const struct pixel_rate_range_table_entry *e = &video_optimized_pixel_rates[i];
1049
1050 if (e->range_min_khz <= pixel_rate_khz && pixel_rate_khz <= e->range_max_khz) {
1051 return e;
1052 }
1053 }
1054
1055 return NULL;
1056 }
1057 #endif
1058
dcn20_program_pix_clk(struct clock_source * clock_source,struct pixel_clk_params * pix_clk_params,struct pll_settings * pll_settings)1059 static bool dcn20_program_pix_clk(
1060 struct clock_source *clock_source,
1061 struct pixel_clk_params *pix_clk_params,
1062 struct pll_settings *pll_settings)
1063 {
1064 dce112_program_pix_clk(clock_source, pix_clk_params, pll_settings);
1065
1066 return true;
1067 }
1068
1069 static const struct clock_source_funcs dcn20_clk_src_funcs = {
1070 .cs_power_down = dce110_clock_source_power_down,
1071 .program_pix_clk = dcn20_program_pix_clk,
1072 .get_pix_clk_dividers = dce112_get_pix_clk_dividers,
1073 .get_pixel_clk_frequency_100hz = get_pixel_clk_frequency_100hz
1074 };
1075
1076 #if defined(CONFIG_DRM_AMD_DC_DCN3_0)
dcn3_program_pix_clk(struct clock_source * clock_source,struct pixel_clk_params * pix_clk_params,struct pll_settings * pll_settings)1077 static bool dcn3_program_pix_clk(
1078 struct clock_source *clock_source,
1079 struct pixel_clk_params *pix_clk_params,
1080 struct pll_settings *pll_settings)
1081 {
1082 struct dce110_clk_src *clk_src = TO_DCE110_CLK_SRC(clock_source);
1083 unsigned int inst = pix_clk_params->controller_id - CONTROLLER_ID_D0;
1084 unsigned int dp_dto_ref_khz = clock_source->ctx->dc->clk_mgr->dprefclk_khz;
1085 const struct pixel_rate_range_table_entry *e =
1086 look_up_in_video_optimized_rate_tlb(pix_clk_params->requested_pix_clk_100hz / 10);
1087
1088 // For these signal types Driver to program DP_DTO without calling VBIOS Command table
1089 if (dc_is_dp_signal(pix_clk_params->signal_type)) {
1090 if (e) {
1091 /* Set DTO values: phase = target clock, modulo = reference clock*/
1092 REG_WRITE(PHASE[inst], e->target_pixel_rate_khz * e->mult_factor);
1093 REG_WRITE(MODULO[inst], dp_dto_ref_khz * e->div_factor);
1094 } else {
1095 /* Set DTO values: phase = target clock, modulo = reference clock*/
1096 REG_WRITE(PHASE[inst], pll_settings->actual_pix_clk_100hz * 100);
1097 REG_WRITE(MODULO[inst], dp_dto_ref_khz * 1000);
1098 }
1099 REG_UPDATE(PIXEL_RATE_CNTL[inst], DP_DTO0_ENABLE, 1);
1100 } else
1101 // For other signal types(HDMI_TYPE_A, DVI) Driver still to call VBIOS Command table
1102 dce112_program_pix_clk(clock_source, pix_clk_params, pll_settings);
1103
1104 return true;
1105 }
1106
dcn3_get_pix_clk_dividers(struct clock_source * cs,struct pixel_clk_params * pix_clk_params,struct pll_settings * pll_settings)1107 static uint32_t dcn3_get_pix_clk_dividers(
1108 struct clock_source *cs,
1109 struct pixel_clk_params *pix_clk_params,
1110 struct pll_settings *pll_settings)
1111 {
1112 unsigned long long actual_pix_clk_100Hz = pix_clk_params->requested_pix_clk_100hz;
1113 struct dce110_clk_src *clk_src;
1114
1115 clk_src = TO_DCE110_CLK_SRC(cs);
1116 DC_LOGGER_INIT();
1117
1118 if (pix_clk_params == NULL || pll_settings == NULL
1119 || pix_clk_params->requested_pix_clk_100hz == 0) {
1120 DC_LOG_ERROR(
1121 "%s: Invalid parameters!!\n", __func__);
1122 return -1;
1123 }
1124
1125 memset(pll_settings, 0, sizeof(*pll_settings));
1126 /* Adjust for HDMI Type A deep color */
1127 if (pix_clk_params->signal_type == SIGNAL_TYPE_HDMI_TYPE_A) {
1128 switch (pix_clk_params->color_depth) {
1129 case COLOR_DEPTH_101010:
1130 actual_pix_clk_100Hz = (actual_pix_clk_100Hz * 5) >> 2;
1131 break;
1132 case COLOR_DEPTH_121212:
1133 actual_pix_clk_100Hz = (actual_pix_clk_100Hz * 6) >> 2;
1134 break;
1135 case COLOR_DEPTH_161616:
1136 actual_pix_clk_100Hz = actual_pix_clk_100Hz * 2;
1137 break;
1138 default:
1139 break;
1140 }
1141 }
1142 pll_settings->actual_pix_clk_100hz = (unsigned int) actual_pix_clk_100Hz;
1143 pll_settings->adjusted_pix_clk_100hz = (unsigned int) actual_pix_clk_100Hz;
1144 pll_settings->calculated_pix_clk_100hz = (unsigned int) actual_pix_clk_100Hz;
1145
1146 return 0;
1147 }
1148
1149 static const struct clock_source_funcs dcn3_clk_src_funcs = {
1150 .cs_power_down = dce110_clock_source_power_down,
1151 .program_pix_clk = dcn3_program_pix_clk,
1152 .get_pix_clk_dividers = dcn3_get_pix_clk_dividers,
1153 .get_pixel_clk_frequency_100hz = get_pixel_clk_frequency_100hz
1154 };
1155 #endif
1156 /*****************************************/
1157 /* Constructor */
1158 /*****************************************/
1159
1160 static const struct clock_source_funcs dce112_clk_src_funcs = {
1161 .cs_power_down = dce110_clock_source_power_down,
1162 .program_pix_clk = dce112_program_pix_clk,
1163 .get_pix_clk_dividers = dce112_get_pix_clk_dividers,
1164 .get_pixel_clk_frequency_100hz = get_pixel_clk_frequency_100hz
1165 };
1166 static const struct clock_source_funcs dce110_clk_src_funcs = {
1167 .cs_power_down = dce110_clock_source_power_down,
1168 .program_pix_clk = dce110_program_pix_clk,
1169 .get_pix_clk_dividers = dce110_get_pix_clk_dividers,
1170 .get_pixel_clk_frequency_100hz = get_pixel_clk_frequency_100hz
1171 };
1172
1173
get_ss_info_from_atombios(struct dce110_clk_src * clk_src,enum as_signal_type as_signal,struct spread_spectrum_data * spread_spectrum_data[],uint32_t * ss_entries_num)1174 static void get_ss_info_from_atombios(
1175 struct dce110_clk_src *clk_src,
1176 enum as_signal_type as_signal,
1177 struct spread_spectrum_data *spread_spectrum_data[],
1178 uint32_t *ss_entries_num)
1179 {
1180 enum bp_result bp_result = BP_RESULT_FAILURE;
1181 struct spread_spectrum_info *ss_info;
1182 struct spread_spectrum_data *ss_data;
1183 struct spread_spectrum_info *ss_info_cur;
1184 struct spread_spectrum_data *ss_data_cur;
1185 uint32_t i;
1186 DC_LOGGER_INIT();
1187 if (ss_entries_num == NULL) {
1188 DC_LOG_SYNC(
1189 "Invalid entry !!!\n");
1190 return;
1191 }
1192 if (spread_spectrum_data == NULL) {
1193 DC_LOG_SYNC(
1194 "Invalid array pointer!!!\n");
1195 return;
1196 }
1197
1198 spread_spectrum_data[0] = NULL;
1199 *ss_entries_num = 0;
1200
1201 *ss_entries_num = clk_src->bios->funcs->get_ss_entry_number(
1202 clk_src->bios,
1203 as_signal);
1204
1205 if (*ss_entries_num == 0)
1206 return;
1207
1208 ss_info = kcalloc(*ss_entries_num,
1209 sizeof(struct spread_spectrum_info),
1210 GFP_KERNEL);
1211 ss_info_cur = ss_info;
1212 if (ss_info == NULL)
1213 return;
1214
1215 ss_data = kcalloc(*ss_entries_num,
1216 sizeof(struct spread_spectrum_data),
1217 GFP_KERNEL);
1218 if (ss_data == NULL)
1219 goto out_free_info;
1220
1221 for (i = 0, ss_info_cur = ss_info;
1222 i < (*ss_entries_num);
1223 ++i, ++ss_info_cur) {
1224
1225 bp_result = clk_src->bios->funcs->get_spread_spectrum_info(
1226 clk_src->bios,
1227 as_signal,
1228 i,
1229 ss_info_cur);
1230
1231 if (bp_result != BP_RESULT_OK)
1232 goto out_free_data;
1233 }
1234
1235 for (i = 0, ss_info_cur = ss_info, ss_data_cur = ss_data;
1236 i < (*ss_entries_num);
1237 ++i, ++ss_info_cur, ++ss_data_cur) {
1238
1239 if (ss_info_cur->type.STEP_AND_DELAY_INFO != false) {
1240 DC_LOG_SYNC(
1241 "Invalid ATOMBIOS SS Table!!!\n");
1242 goto out_free_data;
1243 }
1244
1245 /* for HDMI check SS percentage,
1246 * if it is > 6 (0.06%), the ATOMBIOS table info is invalid*/
1247 if (as_signal == AS_SIGNAL_TYPE_HDMI
1248 && ss_info_cur->spread_spectrum_percentage > 6){
1249 /* invalid input, do nothing */
1250 DC_LOG_SYNC(
1251 "Invalid SS percentage ");
1252 DC_LOG_SYNC(
1253 "for HDMI in ATOMBIOS info Table!!!\n");
1254 continue;
1255 }
1256 if (ss_info_cur->spread_percentage_divider == 1000) {
1257 /* Keep previous precision from ATOMBIOS for these
1258 * in case new precision set by ATOMBIOS for these
1259 * (otherwise all code in DCE specific classes
1260 * for all previous ASICs would need
1261 * to be updated for SS calculations,
1262 * Audio SS compensation and DP DTO SS compensation
1263 * which assumes fixed SS percentage Divider = 100)*/
1264 ss_info_cur->spread_spectrum_percentage /= 10;
1265 ss_info_cur->spread_percentage_divider = 100;
1266 }
1267
1268 ss_data_cur->freq_range_khz = ss_info_cur->target_clock_range;
1269 ss_data_cur->percentage =
1270 ss_info_cur->spread_spectrum_percentage;
1271 ss_data_cur->percentage_divider =
1272 ss_info_cur->spread_percentage_divider;
1273 ss_data_cur->modulation_freq_hz =
1274 ss_info_cur->spread_spectrum_range;
1275
1276 if (ss_info_cur->type.CENTER_MODE)
1277 ss_data_cur->flags.CENTER_SPREAD = 1;
1278
1279 if (ss_info_cur->type.EXTERNAL)
1280 ss_data_cur->flags.EXTERNAL_SS = 1;
1281
1282 }
1283
1284 *spread_spectrum_data = ss_data;
1285 kfree(ss_info);
1286 return;
1287
1288 out_free_data:
1289 kfree(ss_data);
1290 *ss_entries_num = 0;
1291 out_free_info:
1292 kfree(ss_info);
1293 }
1294
ss_info_from_atombios_create(struct dce110_clk_src * clk_src)1295 static void ss_info_from_atombios_create(
1296 struct dce110_clk_src *clk_src)
1297 {
1298 get_ss_info_from_atombios(
1299 clk_src,
1300 AS_SIGNAL_TYPE_DISPLAY_PORT,
1301 &clk_src->dp_ss_params,
1302 &clk_src->dp_ss_params_cnt);
1303 get_ss_info_from_atombios(
1304 clk_src,
1305 AS_SIGNAL_TYPE_HDMI,
1306 &clk_src->hdmi_ss_params,
1307 &clk_src->hdmi_ss_params_cnt);
1308 get_ss_info_from_atombios(
1309 clk_src,
1310 AS_SIGNAL_TYPE_DVI,
1311 &clk_src->dvi_ss_params,
1312 &clk_src->dvi_ss_params_cnt);
1313 get_ss_info_from_atombios(
1314 clk_src,
1315 AS_SIGNAL_TYPE_LVDS,
1316 &clk_src->lvds_ss_params,
1317 &clk_src->lvds_ss_params_cnt);
1318 }
1319
calc_pll_max_vco_construct(struct calc_pll_clock_source * calc_pll_cs,struct calc_pll_clock_source_init_data * init_data)1320 static bool calc_pll_max_vco_construct(
1321 struct calc_pll_clock_source *calc_pll_cs,
1322 struct calc_pll_clock_source_init_data *init_data)
1323 {
1324 uint32_t i;
1325 struct dc_firmware_info *fw_info;
1326 if (calc_pll_cs == NULL ||
1327 init_data == NULL ||
1328 init_data->bp == NULL)
1329 return false;
1330
1331 if (!init_data->bp->fw_info_valid)
1332 return false;
1333
1334 fw_info = &init_data->bp->fw_info;
1335 calc_pll_cs->ctx = init_data->ctx;
1336 calc_pll_cs->ref_freq_khz = fw_info->pll_info.crystal_frequency;
1337 calc_pll_cs->min_vco_khz =
1338 fw_info->pll_info.min_output_pxl_clk_pll_frequency;
1339 calc_pll_cs->max_vco_khz =
1340 fw_info->pll_info.max_output_pxl_clk_pll_frequency;
1341
1342 if (init_data->max_override_input_pxl_clk_pll_freq_khz != 0)
1343 calc_pll_cs->max_pll_input_freq_khz =
1344 init_data->max_override_input_pxl_clk_pll_freq_khz;
1345 else
1346 calc_pll_cs->max_pll_input_freq_khz =
1347 fw_info->pll_info.max_input_pxl_clk_pll_frequency;
1348
1349 if (init_data->min_override_input_pxl_clk_pll_freq_khz != 0)
1350 calc_pll_cs->min_pll_input_freq_khz =
1351 init_data->min_override_input_pxl_clk_pll_freq_khz;
1352 else
1353 calc_pll_cs->min_pll_input_freq_khz =
1354 fw_info->pll_info.min_input_pxl_clk_pll_frequency;
1355
1356 calc_pll_cs->min_pix_clock_pll_post_divider =
1357 init_data->min_pix_clk_pll_post_divider;
1358 calc_pll_cs->max_pix_clock_pll_post_divider =
1359 init_data->max_pix_clk_pll_post_divider;
1360 calc_pll_cs->min_pll_ref_divider =
1361 init_data->min_pll_ref_divider;
1362 calc_pll_cs->max_pll_ref_divider =
1363 init_data->max_pll_ref_divider;
1364
1365 if (init_data->num_fract_fb_divider_decimal_point == 0 ||
1366 init_data->num_fract_fb_divider_decimal_point_precision >
1367 init_data->num_fract_fb_divider_decimal_point) {
1368 DC_LOG_ERROR(
1369 "The dec point num or precision is incorrect!");
1370 return false;
1371 }
1372 if (init_data->num_fract_fb_divider_decimal_point_precision == 0) {
1373 DC_LOG_ERROR(
1374 "Incorrect fract feedback divider precision num!");
1375 return false;
1376 }
1377
1378 calc_pll_cs->fract_fb_divider_decimal_points_num =
1379 init_data->num_fract_fb_divider_decimal_point;
1380 calc_pll_cs->fract_fb_divider_precision =
1381 init_data->num_fract_fb_divider_decimal_point_precision;
1382 calc_pll_cs->fract_fb_divider_factor = 1;
1383 for (i = 0; i < calc_pll_cs->fract_fb_divider_decimal_points_num; ++i)
1384 calc_pll_cs->fract_fb_divider_factor *= 10;
1385
1386 calc_pll_cs->fract_fb_divider_precision_factor = 1;
1387 for (
1388 i = 0;
1389 i < (calc_pll_cs->fract_fb_divider_decimal_points_num -
1390 calc_pll_cs->fract_fb_divider_precision);
1391 ++i)
1392 calc_pll_cs->fract_fb_divider_precision_factor *= 10;
1393
1394 return true;
1395 }
1396
dce110_clk_src_construct(struct dce110_clk_src * clk_src,struct dc_context * ctx,struct dc_bios * bios,enum clock_source_id id,const struct dce110_clk_src_regs * regs,const struct dce110_clk_src_shift * cs_shift,const struct dce110_clk_src_mask * cs_mask)1397 bool dce110_clk_src_construct(
1398 struct dce110_clk_src *clk_src,
1399 struct dc_context *ctx,
1400 struct dc_bios *bios,
1401 enum clock_source_id id,
1402 const struct dce110_clk_src_regs *regs,
1403 const struct dce110_clk_src_shift *cs_shift,
1404 const struct dce110_clk_src_mask *cs_mask)
1405 {
1406 struct calc_pll_clock_source_init_data calc_pll_cs_init_data_hdmi;
1407 struct calc_pll_clock_source_init_data calc_pll_cs_init_data;
1408
1409 clk_src->base.ctx = ctx;
1410 clk_src->bios = bios;
1411 clk_src->base.id = id;
1412 clk_src->base.funcs = &dce110_clk_src_funcs;
1413
1414 clk_src->regs = regs;
1415 clk_src->cs_shift = cs_shift;
1416 clk_src->cs_mask = cs_mask;
1417
1418 if (!clk_src->bios->fw_info_valid) {
1419 ASSERT_CRITICAL(false);
1420 goto unexpected_failure;
1421 }
1422
1423 clk_src->ext_clk_khz = clk_src->bios->fw_info.external_clock_source_frequency_for_dp;
1424
1425 /* structure normally used with PLL ranges from ATOMBIOS; DS on by default */
1426 calc_pll_cs_init_data.bp = bios;
1427 calc_pll_cs_init_data.min_pix_clk_pll_post_divider = 1;
1428 calc_pll_cs_init_data.max_pix_clk_pll_post_divider =
1429 clk_src->cs_mask->PLL_POST_DIV_PIXCLK;
1430 calc_pll_cs_init_data.min_pll_ref_divider = 1;
1431 calc_pll_cs_init_data.max_pll_ref_divider = clk_src->cs_mask->PLL_REF_DIV;
1432 /* when 0 use minInputPxlClkPLLFrequencyInKHz from firmwareInfo*/
1433 calc_pll_cs_init_data.min_override_input_pxl_clk_pll_freq_khz = 0;
1434 /* when 0 use maxInputPxlClkPLLFrequencyInKHz from firmwareInfo*/
1435 calc_pll_cs_init_data.max_override_input_pxl_clk_pll_freq_khz = 0;
1436 /*numberOfFractFBDividerDecimalPoints*/
1437 calc_pll_cs_init_data.num_fract_fb_divider_decimal_point =
1438 FRACT_FB_DIVIDER_DEC_POINTS_MAX_NUM;
1439 /*number of decimal point to round off for fractional feedback divider value*/
1440 calc_pll_cs_init_data.num_fract_fb_divider_decimal_point_precision =
1441 FRACT_FB_DIVIDER_DEC_POINTS_MAX_NUM;
1442 calc_pll_cs_init_data.ctx = ctx;
1443
1444 /*structure for HDMI, no SS or SS% <= 0.06% for 27 MHz Ref clock */
1445 calc_pll_cs_init_data_hdmi.bp = bios;
1446 calc_pll_cs_init_data_hdmi.min_pix_clk_pll_post_divider = 1;
1447 calc_pll_cs_init_data_hdmi.max_pix_clk_pll_post_divider =
1448 clk_src->cs_mask->PLL_POST_DIV_PIXCLK;
1449 calc_pll_cs_init_data_hdmi.min_pll_ref_divider = 1;
1450 calc_pll_cs_init_data_hdmi.max_pll_ref_divider = clk_src->cs_mask->PLL_REF_DIV;
1451 /* when 0 use minInputPxlClkPLLFrequencyInKHz from firmwareInfo*/
1452 calc_pll_cs_init_data_hdmi.min_override_input_pxl_clk_pll_freq_khz = 13500;
1453 /* when 0 use maxInputPxlClkPLLFrequencyInKHz from firmwareInfo*/
1454 calc_pll_cs_init_data_hdmi.max_override_input_pxl_clk_pll_freq_khz = 27000;
1455 /*numberOfFractFBDividerDecimalPoints*/
1456 calc_pll_cs_init_data_hdmi.num_fract_fb_divider_decimal_point =
1457 FRACT_FB_DIVIDER_DEC_POINTS_MAX_NUM;
1458 /*number of decimal point to round off for fractional feedback divider value*/
1459 calc_pll_cs_init_data_hdmi.num_fract_fb_divider_decimal_point_precision =
1460 FRACT_FB_DIVIDER_DEC_POINTS_MAX_NUM;
1461 calc_pll_cs_init_data_hdmi.ctx = ctx;
1462
1463 clk_src->ref_freq_khz = clk_src->bios->fw_info.pll_info.crystal_frequency;
1464
1465 if (clk_src->base.id == CLOCK_SOURCE_ID_EXTERNAL)
1466 return true;
1467
1468 /* PLL only from here on */
1469 ss_info_from_atombios_create(clk_src);
1470
1471 if (!calc_pll_max_vco_construct(
1472 &clk_src->calc_pll,
1473 &calc_pll_cs_init_data)) {
1474 ASSERT_CRITICAL(false);
1475 goto unexpected_failure;
1476 }
1477
1478
1479 calc_pll_cs_init_data_hdmi.
1480 min_override_input_pxl_clk_pll_freq_khz = clk_src->ref_freq_khz/2;
1481 calc_pll_cs_init_data_hdmi.
1482 max_override_input_pxl_clk_pll_freq_khz = clk_src->ref_freq_khz;
1483
1484
1485 if (!calc_pll_max_vco_construct(
1486 &clk_src->calc_pll_hdmi, &calc_pll_cs_init_data_hdmi)) {
1487 ASSERT_CRITICAL(false);
1488 goto unexpected_failure;
1489 }
1490
1491 return true;
1492
1493 unexpected_failure:
1494 return false;
1495 }
1496
dce112_clk_src_construct(struct dce110_clk_src * clk_src,struct dc_context * ctx,struct dc_bios * bios,enum clock_source_id id,const struct dce110_clk_src_regs * regs,const struct dce110_clk_src_shift * cs_shift,const struct dce110_clk_src_mask * cs_mask)1497 bool dce112_clk_src_construct(
1498 struct dce110_clk_src *clk_src,
1499 struct dc_context *ctx,
1500 struct dc_bios *bios,
1501 enum clock_source_id id,
1502 const struct dce110_clk_src_regs *regs,
1503 const struct dce110_clk_src_shift *cs_shift,
1504 const struct dce110_clk_src_mask *cs_mask)
1505 {
1506 clk_src->base.ctx = ctx;
1507 clk_src->bios = bios;
1508 clk_src->base.id = id;
1509 clk_src->base.funcs = &dce112_clk_src_funcs;
1510
1511 clk_src->regs = regs;
1512 clk_src->cs_shift = cs_shift;
1513 clk_src->cs_mask = cs_mask;
1514
1515 if (!clk_src->bios->fw_info_valid) {
1516 ASSERT_CRITICAL(false);
1517 return false;
1518 }
1519
1520 clk_src->ext_clk_khz = clk_src->bios->fw_info.external_clock_source_frequency_for_dp;
1521
1522 return true;
1523 }
1524
dcn20_clk_src_construct(struct dce110_clk_src * clk_src,struct dc_context * ctx,struct dc_bios * bios,enum clock_source_id id,const struct dce110_clk_src_regs * regs,const struct dce110_clk_src_shift * cs_shift,const struct dce110_clk_src_mask * cs_mask)1525 bool dcn20_clk_src_construct(
1526 struct dce110_clk_src *clk_src,
1527 struct dc_context *ctx,
1528 struct dc_bios *bios,
1529 enum clock_source_id id,
1530 const struct dce110_clk_src_regs *regs,
1531 const struct dce110_clk_src_shift *cs_shift,
1532 const struct dce110_clk_src_mask *cs_mask)
1533 {
1534 bool ret = dce112_clk_src_construct(clk_src, ctx, bios, id, regs, cs_shift, cs_mask);
1535
1536 clk_src->base.funcs = &dcn20_clk_src_funcs;
1537
1538 return ret;
1539 }
1540
1541 #if defined(CONFIG_DRM_AMD_DC_DCN3_0)
dcn3_clk_src_construct(struct dce110_clk_src * clk_src,struct dc_context * ctx,struct dc_bios * bios,enum clock_source_id id,const struct dce110_clk_src_regs * regs,const struct dce110_clk_src_shift * cs_shift,const struct dce110_clk_src_mask * cs_mask)1542 bool dcn3_clk_src_construct(
1543 struct dce110_clk_src *clk_src,
1544 struct dc_context *ctx,
1545 struct dc_bios *bios,
1546 enum clock_source_id id,
1547 const struct dce110_clk_src_regs *regs,
1548 const struct dce110_clk_src_shift *cs_shift,
1549 const struct dce110_clk_src_mask *cs_mask)
1550 {
1551 bool ret = dce112_clk_src_construct(clk_src, ctx, bios, id, regs, cs_shift, cs_mask);
1552
1553 clk_src->base.funcs = &dcn3_clk_src_funcs;
1554
1555 return ret;
1556 }
1557 #endif
1558