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 switch (pix_clk_params->color_depth) {
875 case COLOR_DEPTH_101010:
876 bp_pc_params.color_depth = TRANSMITTER_COLOR_DEPTH_30;
877 break;
878 case COLOR_DEPTH_121212:
879 bp_pc_params.color_depth = TRANSMITTER_COLOR_DEPTH_36;
880 break;
881 case COLOR_DEPTH_161616:
882 bp_pc_params.color_depth = TRANSMITTER_COLOR_DEPTH_48;
883 break;
884 default:
885 break;
886 }
887
888 if (clk_src->bios->funcs->set_pixel_clock(
889 clk_src->bios, &bp_pc_params) != BP_RESULT_OK)
890 return false;
891 /* Enable SS
892 * ATOMBIOS will enable by default SS for DP on PLL ( DP ID clock),
893 * based on HW display PLL team, SS control settings should be programmed
894 * during PLL Reset, but they do not have effect
895 * until SS_EN is asserted.*/
896 if (clock_source->id != CLOCK_SOURCE_ID_EXTERNAL
897 && !dc_is_dp_signal(pix_clk_params->signal_type)) {
898
899 if (pix_clk_params->flags.ENABLE_SS)
900 if (!enable_spread_spectrum(clk_src,
901 pix_clk_params->signal_type,
902 pll_settings))
903 return false;
904
905 /* Resync deep color DTO */
906 dce110_program_pixel_clk_resync(clk_src,
907 pix_clk_params->signal_type,
908 pix_clk_params->color_depth);
909 }
910
911 return true;
912 }
913
dce112_program_pix_clk(struct clock_source * clock_source,struct pixel_clk_params * pix_clk_params,struct pll_settings * pll_settings)914 static bool dce112_program_pix_clk(
915 struct clock_source *clock_source,
916 struct pixel_clk_params *pix_clk_params,
917 struct pll_settings *pll_settings)
918 {
919 struct dce110_clk_src *clk_src = TO_DCE110_CLK_SRC(clock_source);
920 struct bp_pixel_clock_parameters bp_pc_params = {0};
921
922 #if defined(CONFIG_DRM_AMD_DC_DCN)
923 if (IS_FPGA_MAXIMUS_DC(clock_source->ctx->dce_environment)) {
924 unsigned int inst = pix_clk_params->controller_id - CONTROLLER_ID_D0;
925 unsigned dp_dto_ref_100hz = 7000000;
926 unsigned clock_100hz = pll_settings->actual_pix_clk_100hz;
927
928 /* Set DTO values: phase = target clock, modulo = reference clock */
929 REG_WRITE(PHASE[inst], clock_100hz);
930 REG_WRITE(MODULO[inst], dp_dto_ref_100hz);
931
932 /* Enable DTO */
933 REG_UPDATE(PIXEL_RATE_CNTL[inst], DP_DTO0_ENABLE, 1);
934 return true;
935 }
936 #endif
937 /* First disable SS
938 * ATOMBIOS will enable by default SS on PLL for DP,
939 * do not disable it here
940 */
941 if (clock_source->id != CLOCK_SOURCE_ID_EXTERNAL &&
942 !dc_is_dp_signal(pix_clk_params->signal_type) &&
943 clock_source->ctx->dce_version <= DCE_VERSION_11_0)
944 disable_spread_spectrum(clk_src);
945
946 /*ATOMBIOS expects pixel rate adjusted by deep color ratio)*/
947 bp_pc_params.controller_id = pix_clk_params->controller_id;
948 bp_pc_params.pll_id = clock_source->id;
949 bp_pc_params.target_pixel_clock_100hz = pll_settings->actual_pix_clk_100hz;
950 bp_pc_params.encoder_object_id = pix_clk_params->encoder_object_id;
951 bp_pc_params.signal_type = pix_clk_params->signal_type;
952
953 if (clock_source->id != CLOCK_SOURCE_ID_DP_DTO) {
954 bp_pc_params.flags.SET_GENLOCK_REF_DIV_SRC =
955 pll_settings->use_external_clk;
956 bp_pc_params.flags.SET_XTALIN_REF_SRC =
957 !pll_settings->use_external_clk;
958 if (pix_clk_params->flags.SUPPORT_YCBCR420) {
959 bp_pc_params.flags.SUPPORT_YUV_420 = 1;
960 }
961 }
962 if (clk_src->bios->funcs->set_pixel_clock(
963 clk_src->bios, &bp_pc_params) != BP_RESULT_OK)
964 return false;
965 /* Resync deep color DTO */
966 if (clock_source->id != CLOCK_SOURCE_ID_DP_DTO)
967 dce112_program_pixel_clk_resync(clk_src,
968 pix_clk_params->signal_type,
969 pix_clk_params->color_depth,
970 pix_clk_params->flags.SUPPORT_YCBCR420);
971
972 return true;
973 }
974
975
dce110_clock_source_power_down(struct clock_source * clk_src)976 static bool dce110_clock_source_power_down(
977 struct clock_source *clk_src)
978 {
979 struct dce110_clk_src *dce110_clk_src = TO_DCE110_CLK_SRC(clk_src);
980 enum bp_result bp_result;
981 struct bp_pixel_clock_parameters bp_pixel_clock_params = {0};
982
983 if (clk_src->dp_clk_src)
984 return true;
985
986 /* If Pixel Clock is 0 it means Power Down Pll*/
987 bp_pixel_clock_params.controller_id = CONTROLLER_ID_UNDEFINED;
988 bp_pixel_clock_params.pll_id = clk_src->id;
989 bp_pixel_clock_params.flags.FORCE_PROGRAMMING_OF_PLL = 1;
990
991 /*Call ASICControl to process ATOMBIOS Exec table*/
992 bp_result = dce110_clk_src->bios->funcs->set_pixel_clock(
993 dce110_clk_src->bios,
994 &bp_pixel_clock_params);
995
996 return bp_result == BP_RESULT_OK;
997 }
998
get_pixel_clk_frequency_100hz(const struct clock_source * clock_source,unsigned int inst,unsigned int * pixel_clk_khz)999 static bool get_pixel_clk_frequency_100hz(
1000 const struct clock_source *clock_source,
1001 unsigned int inst,
1002 unsigned int *pixel_clk_khz)
1003 {
1004 struct dce110_clk_src *clk_src = TO_DCE110_CLK_SRC(clock_source);
1005 unsigned int clock_hz = 0;
1006
1007 if (clock_source->id == CLOCK_SOURCE_ID_DP_DTO) {
1008 clock_hz = REG_READ(PHASE[inst]);
1009
1010 /* NOTE: There is agreement with VBIOS here that MODULO is
1011 * programmed equal to DPREFCLK, in which case PHASE will be
1012 * equivalent to pixel clock.
1013 */
1014 *pixel_clk_khz = clock_hz / 100;
1015 return true;
1016 }
1017
1018 return false;
1019 }
1020
1021 #if defined(CONFIG_DRM_AMD_DC_DCN3_0)
1022 /* this table is use to find *1.001 and /1.001 pixel rates from non-precise pixel rate */
1023 const struct pixel_rate_range_table_entry video_optimized_pixel_rates[] = {
1024 // /1.001 rates
1025 {25170, 25180, 25200, 1000, 1001}, //25.2MHz -> 25.17
1026 {59340, 59350, 59400, 1000, 1001}, //59.4Mhz -> 59.340
1027 {74170, 74180, 74250, 1000, 1001}, //74.25Mhz -> 74.1758
1028 {125870, 125880, 126000, 1000, 1001}, //126Mhz -> 125.87
1029 {148350, 148360, 148500, 1000, 1001}, //148.5Mhz -> 148.3516
1030 {167830, 167840, 168000, 1000, 1001}, //168Mhz -> 167.83
1031 {222520, 222530, 222750, 1000, 1001}, //222.75Mhz -> 222.527
1032 {257140, 257150, 257400, 1000, 1001}, //257.4Mhz -> 257.1429
1033 {296700, 296710, 297000, 1000, 1001}, //297Mhz -> 296.7033
1034 {342850, 342860, 343200, 1000, 1001}, //343.2Mhz -> 342.857
1035 {395600, 395610, 396000, 1000, 1001}, //396Mhz -> 395.6
1036 {409090, 409100, 409500, 1000, 1001}, //409.5Mhz -> 409.091
1037 {445050, 445060, 445500, 1000, 1001}, //445.5Mhz -> 445.055
1038 {467530, 467540, 468000, 1000, 1001}, //468Mhz -> 467.5325
1039 {519230, 519240, 519750, 1000, 1001}, //519.75Mhz -> 519.231
1040 {525970, 525980, 526500, 1000, 1001}, //526.5Mhz -> 525.974
1041 {545450, 545460, 546000, 1000, 1001}, //546Mhz -> 545.455
1042 {593400, 593410, 594000, 1000, 1001}, //594Mhz -> 593.4066
1043 {623370, 623380, 624000, 1000, 1001}, //624Mhz -> 623.377
1044 {692300, 692310, 693000, 1000, 1001}, //693Mhz -> 692.308
1045 {701290, 701300, 702000, 1000, 1001}, //702Mhz -> 701.2987
1046 {791200, 791210, 792000, 1000, 1001}, //792Mhz -> 791.209
1047 {890100, 890110, 891000, 1000, 1001}, //891Mhz -> 890.1099
1048 {1186810, 1186820, 1188000, 1000, 1001},//1188Mhz -> 1186.8131
1049
1050 // *1.001 rates
1051 {27020, 27030, 27000, 1001, 1000}, //27Mhz
1052 {54050, 54060, 54000, 1001, 1000}, //54Mhz
1053 {108100, 108110, 108000, 1001, 1000},//108Mhz
1054 };
1055
look_up_in_video_optimized_rate_tlb(unsigned int pixel_rate_khz)1056 const struct pixel_rate_range_table_entry *look_up_in_video_optimized_rate_tlb(
1057 unsigned int pixel_rate_khz)
1058 {
1059 int i;
1060
1061 for (i = 0; i < NUM_ELEMENTS(video_optimized_pixel_rates); i++) {
1062 const struct pixel_rate_range_table_entry *e = &video_optimized_pixel_rates[i];
1063
1064 if (e->range_min_khz <= pixel_rate_khz && pixel_rate_khz <= e->range_max_khz) {
1065 return e;
1066 }
1067 }
1068
1069 return NULL;
1070 }
1071 #endif
1072
dcn20_program_pix_clk(struct clock_source * clock_source,struct pixel_clk_params * pix_clk_params,struct pll_settings * pll_settings)1073 static bool dcn20_program_pix_clk(
1074 struct clock_source *clock_source,
1075 struct pixel_clk_params *pix_clk_params,
1076 struct pll_settings *pll_settings)
1077 {
1078 dce112_program_pix_clk(clock_source, pix_clk_params, pll_settings);
1079
1080 return true;
1081 }
1082
1083 static const struct clock_source_funcs dcn20_clk_src_funcs = {
1084 .cs_power_down = dce110_clock_source_power_down,
1085 .program_pix_clk = dcn20_program_pix_clk,
1086 .get_pix_clk_dividers = dce112_get_pix_clk_dividers,
1087 .get_pixel_clk_frequency_100hz = get_pixel_clk_frequency_100hz
1088 };
1089
1090 #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)1091 static bool dcn3_program_pix_clk(
1092 struct clock_source *clock_source,
1093 struct pixel_clk_params *pix_clk_params,
1094 struct pll_settings *pll_settings)
1095 {
1096 struct dce110_clk_src *clk_src = TO_DCE110_CLK_SRC(clock_source);
1097 unsigned int inst = pix_clk_params->controller_id - CONTROLLER_ID_D0;
1098 unsigned int dp_dto_ref_khz = clock_source->ctx->dc->clk_mgr->dprefclk_khz;
1099 const struct pixel_rate_range_table_entry *e =
1100 look_up_in_video_optimized_rate_tlb(pix_clk_params->requested_pix_clk_100hz / 10);
1101
1102 // For these signal types Driver to program DP_DTO without calling VBIOS Command table
1103 if (dc_is_dp_signal(pix_clk_params->signal_type)) {
1104 if (e) {
1105 /* Set DTO values: phase = target clock, modulo = reference clock*/
1106 REG_WRITE(PHASE[inst], e->target_pixel_rate_khz * e->mult_factor);
1107 REG_WRITE(MODULO[inst], dp_dto_ref_khz * e->div_factor);
1108 } else {
1109 /* Set DTO values: phase = target clock, modulo = reference clock*/
1110 REG_WRITE(PHASE[inst], pll_settings->actual_pix_clk_100hz * 100);
1111 REG_WRITE(MODULO[inst], dp_dto_ref_khz * 1000);
1112 }
1113 REG_UPDATE(PIXEL_RATE_CNTL[inst], DP_DTO0_ENABLE, 1);
1114 } else
1115 // For other signal types(HDMI_TYPE_A, DVI) Driver still to call VBIOS Command table
1116 dce112_program_pix_clk(clock_source, pix_clk_params, pll_settings);
1117
1118 return true;
1119 }
1120
dcn3_get_pix_clk_dividers(struct clock_source * cs,struct pixel_clk_params * pix_clk_params,struct pll_settings * pll_settings)1121 static uint32_t dcn3_get_pix_clk_dividers(
1122 struct clock_source *cs,
1123 struct pixel_clk_params *pix_clk_params,
1124 struct pll_settings *pll_settings)
1125 {
1126 unsigned long long actual_pix_clk_100Hz = pix_clk_params->requested_pix_clk_100hz;
1127 struct dce110_clk_src *clk_src;
1128
1129 clk_src = TO_DCE110_CLK_SRC(cs);
1130 DC_LOGGER_INIT();
1131
1132 if (pix_clk_params == NULL || pll_settings == NULL
1133 || pix_clk_params->requested_pix_clk_100hz == 0) {
1134 DC_LOG_ERROR(
1135 "%s: Invalid parameters!!\n", __func__);
1136 return -1;
1137 }
1138
1139 memset(pll_settings, 0, sizeof(*pll_settings));
1140 /* Adjust for HDMI Type A deep color */
1141 if (pix_clk_params->signal_type == SIGNAL_TYPE_HDMI_TYPE_A) {
1142 switch (pix_clk_params->color_depth) {
1143 case COLOR_DEPTH_101010:
1144 actual_pix_clk_100Hz = (actual_pix_clk_100Hz * 5) >> 2;
1145 break;
1146 case COLOR_DEPTH_121212:
1147 actual_pix_clk_100Hz = (actual_pix_clk_100Hz * 6) >> 2;
1148 break;
1149 case COLOR_DEPTH_161616:
1150 actual_pix_clk_100Hz = actual_pix_clk_100Hz * 2;
1151 break;
1152 default:
1153 break;
1154 }
1155 }
1156 pll_settings->actual_pix_clk_100hz = (unsigned int) actual_pix_clk_100Hz;
1157 pll_settings->adjusted_pix_clk_100hz = (unsigned int) actual_pix_clk_100Hz;
1158 pll_settings->calculated_pix_clk_100hz = (unsigned int) actual_pix_clk_100Hz;
1159
1160 return 0;
1161 }
1162
1163 static const struct clock_source_funcs dcn3_clk_src_funcs = {
1164 .cs_power_down = dce110_clock_source_power_down,
1165 .program_pix_clk = dcn3_program_pix_clk,
1166 .get_pix_clk_dividers = dcn3_get_pix_clk_dividers,
1167 .get_pixel_clk_frequency_100hz = get_pixel_clk_frequency_100hz
1168 };
1169 #endif
1170 /*****************************************/
1171 /* Constructor */
1172 /*****************************************/
1173
1174 static const struct clock_source_funcs dce112_clk_src_funcs = {
1175 .cs_power_down = dce110_clock_source_power_down,
1176 .program_pix_clk = dce112_program_pix_clk,
1177 .get_pix_clk_dividers = dce112_get_pix_clk_dividers,
1178 .get_pixel_clk_frequency_100hz = get_pixel_clk_frequency_100hz
1179 };
1180 static const struct clock_source_funcs dce110_clk_src_funcs = {
1181 .cs_power_down = dce110_clock_source_power_down,
1182 .program_pix_clk = dce110_program_pix_clk,
1183 .get_pix_clk_dividers = dce110_get_pix_clk_dividers,
1184 .get_pixel_clk_frequency_100hz = get_pixel_clk_frequency_100hz
1185 };
1186
1187
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)1188 static void get_ss_info_from_atombios(
1189 struct dce110_clk_src *clk_src,
1190 enum as_signal_type as_signal,
1191 struct spread_spectrum_data *spread_spectrum_data[],
1192 uint32_t *ss_entries_num)
1193 {
1194 enum bp_result bp_result = BP_RESULT_FAILURE;
1195 struct spread_spectrum_info *ss_info;
1196 struct spread_spectrum_data *ss_data;
1197 struct spread_spectrum_info *ss_info_cur;
1198 struct spread_spectrum_data *ss_data_cur;
1199 uint32_t i;
1200 DC_LOGGER_INIT();
1201 if (ss_entries_num == NULL) {
1202 DC_LOG_SYNC(
1203 "Invalid entry !!!\n");
1204 return;
1205 }
1206 if (spread_spectrum_data == NULL) {
1207 DC_LOG_SYNC(
1208 "Invalid array pointer!!!\n");
1209 return;
1210 }
1211
1212 spread_spectrum_data[0] = NULL;
1213 *ss_entries_num = 0;
1214
1215 *ss_entries_num = clk_src->bios->funcs->get_ss_entry_number(
1216 clk_src->bios,
1217 as_signal);
1218
1219 if (*ss_entries_num == 0)
1220 return;
1221
1222 ss_info = kcalloc(*ss_entries_num,
1223 sizeof(struct spread_spectrum_info),
1224 GFP_KERNEL);
1225 ss_info_cur = ss_info;
1226 if (ss_info == NULL)
1227 return;
1228
1229 ss_data = kcalloc(*ss_entries_num,
1230 sizeof(struct spread_spectrum_data),
1231 GFP_KERNEL);
1232 if (ss_data == NULL)
1233 goto out_free_info;
1234
1235 for (i = 0, ss_info_cur = ss_info;
1236 i < (*ss_entries_num);
1237 ++i, ++ss_info_cur) {
1238
1239 bp_result = clk_src->bios->funcs->get_spread_spectrum_info(
1240 clk_src->bios,
1241 as_signal,
1242 i,
1243 ss_info_cur);
1244
1245 if (bp_result != BP_RESULT_OK)
1246 goto out_free_data;
1247 }
1248
1249 for (i = 0, ss_info_cur = ss_info, ss_data_cur = ss_data;
1250 i < (*ss_entries_num);
1251 ++i, ++ss_info_cur, ++ss_data_cur) {
1252
1253 if (ss_info_cur->type.STEP_AND_DELAY_INFO != false) {
1254 DC_LOG_SYNC(
1255 "Invalid ATOMBIOS SS Table!!!\n");
1256 goto out_free_data;
1257 }
1258
1259 /* for HDMI check SS percentage,
1260 * if it is > 6 (0.06%), the ATOMBIOS table info is invalid*/
1261 if (as_signal == AS_SIGNAL_TYPE_HDMI
1262 && ss_info_cur->spread_spectrum_percentage > 6){
1263 /* invalid input, do nothing */
1264 DC_LOG_SYNC(
1265 "Invalid SS percentage ");
1266 DC_LOG_SYNC(
1267 "for HDMI in ATOMBIOS info Table!!!\n");
1268 continue;
1269 }
1270 if (ss_info_cur->spread_percentage_divider == 1000) {
1271 /* Keep previous precision from ATOMBIOS for these
1272 * in case new precision set by ATOMBIOS for these
1273 * (otherwise all code in DCE specific classes
1274 * for all previous ASICs would need
1275 * to be updated for SS calculations,
1276 * Audio SS compensation and DP DTO SS compensation
1277 * which assumes fixed SS percentage Divider = 100)*/
1278 ss_info_cur->spread_spectrum_percentage /= 10;
1279 ss_info_cur->spread_percentage_divider = 100;
1280 }
1281
1282 ss_data_cur->freq_range_khz = ss_info_cur->target_clock_range;
1283 ss_data_cur->percentage =
1284 ss_info_cur->spread_spectrum_percentage;
1285 ss_data_cur->percentage_divider =
1286 ss_info_cur->spread_percentage_divider;
1287 ss_data_cur->modulation_freq_hz =
1288 ss_info_cur->spread_spectrum_range;
1289
1290 if (ss_info_cur->type.CENTER_MODE)
1291 ss_data_cur->flags.CENTER_SPREAD = 1;
1292
1293 if (ss_info_cur->type.EXTERNAL)
1294 ss_data_cur->flags.EXTERNAL_SS = 1;
1295
1296 }
1297
1298 *spread_spectrum_data = ss_data;
1299 kfree(ss_info);
1300 return;
1301
1302 out_free_data:
1303 kfree(ss_data);
1304 *ss_entries_num = 0;
1305 out_free_info:
1306 kfree(ss_info);
1307 }
1308
ss_info_from_atombios_create(struct dce110_clk_src * clk_src)1309 static void ss_info_from_atombios_create(
1310 struct dce110_clk_src *clk_src)
1311 {
1312 get_ss_info_from_atombios(
1313 clk_src,
1314 AS_SIGNAL_TYPE_DISPLAY_PORT,
1315 &clk_src->dp_ss_params,
1316 &clk_src->dp_ss_params_cnt);
1317 get_ss_info_from_atombios(
1318 clk_src,
1319 AS_SIGNAL_TYPE_HDMI,
1320 &clk_src->hdmi_ss_params,
1321 &clk_src->hdmi_ss_params_cnt);
1322 get_ss_info_from_atombios(
1323 clk_src,
1324 AS_SIGNAL_TYPE_DVI,
1325 &clk_src->dvi_ss_params,
1326 &clk_src->dvi_ss_params_cnt);
1327 get_ss_info_from_atombios(
1328 clk_src,
1329 AS_SIGNAL_TYPE_LVDS,
1330 &clk_src->lvds_ss_params,
1331 &clk_src->lvds_ss_params_cnt);
1332 }
1333
calc_pll_max_vco_construct(struct calc_pll_clock_source * calc_pll_cs,struct calc_pll_clock_source_init_data * init_data)1334 static bool calc_pll_max_vco_construct(
1335 struct calc_pll_clock_source *calc_pll_cs,
1336 struct calc_pll_clock_source_init_data *init_data)
1337 {
1338 uint32_t i;
1339 struct dc_firmware_info *fw_info;
1340 if (calc_pll_cs == NULL ||
1341 init_data == NULL ||
1342 init_data->bp == NULL)
1343 return false;
1344
1345 if (!init_data->bp->fw_info_valid)
1346 return false;
1347
1348 fw_info = &init_data->bp->fw_info;
1349 calc_pll_cs->ctx = init_data->ctx;
1350 calc_pll_cs->ref_freq_khz = fw_info->pll_info.crystal_frequency;
1351 calc_pll_cs->min_vco_khz =
1352 fw_info->pll_info.min_output_pxl_clk_pll_frequency;
1353 calc_pll_cs->max_vco_khz =
1354 fw_info->pll_info.max_output_pxl_clk_pll_frequency;
1355
1356 if (init_data->max_override_input_pxl_clk_pll_freq_khz != 0)
1357 calc_pll_cs->max_pll_input_freq_khz =
1358 init_data->max_override_input_pxl_clk_pll_freq_khz;
1359 else
1360 calc_pll_cs->max_pll_input_freq_khz =
1361 fw_info->pll_info.max_input_pxl_clk_pll_frequency;
1362
1363 if (init_data->min_override_input_pxl_clk_pll_freq_khz != 0)
1364 calc_pll_cs->min_pll_input_freq_khz =
1365 init_data->min_override_input_pxl_clk_pll_freq_khz;
1366 else
1367 calc_pll_cs->min_pll_input_freq_khz =
1368 fw_info->pll_info.min_input_pxl_clk_pll_frequency;
1369
1370 calc_pll_cs->min_pix_clock_pll_post_divider =
1371 init_data->min_pix_clk_pll_post_divider;
1372 calc_pll_cs->max_pix_clock_pll_post_divider =
1373 init_data->max_pix_clk_pll_post_divider;
1374 calc_pll_cs->min_pll_ref_divider =
1375 init_data->min_pll_ref_divider;
1376 calc_pll_cs->max_pll_ref_divider =
1377 init_data->max_pll_ref_divider;
1378
1379 if (init_data->num_fract_fb_divider_decimal_point == 0 ||
1380 init_data->num_fract_fb_divider_decimal_point_precision >
1381 init_data->num_fract_fb_divider_decimal_point) {
1382 DC_LOG_ERROR(
1383 "The dec point num or precision is incorrect!");
1384 return false;
1385 }
1386 if (init_data->num_fract_fb_divider_decimal_point_precision == 0) {
1387 DC_LOG_ERROR(
1388 "Incorrect fract feedback divider precision num!");
1389 return false;
1390 }
1391
1392 calc_pll_cs->fract_fb_divider_decimal_points_num =
1393 init_data->num_fract_fb_divider_decimal_point;
1394 calc_pll_cs->fract_fb_divider_precision =
1395 init_data->num_fract_fb_divider_decimal_point_precision;
1396 calc_pll_cs->fract_fb_divider_factor = 1;
1397 for (i = 0; i < calc_pll_cs->fract_fb_divider_decimal_points_num; ++i)
1398 calc_pll_cs->fract_fb_divider_factor *= 10;
1399
1400 calc_pll_cs->fract_fb_divider_precision_factor = 1;
1401 for (
1402 i = 0;
1403 i < (calc_pll_cs->fract_fb_divider_decimal_points_num -
1404 calc_pll_cs->fract_fb_divider_precision);
1405 ++i)
1406 calc_pll_cs->fract_fb_divider_precision_factor *= 10;
1407
1408 return true;
1409 }
1410
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)1411 bool dce110_clk_src_construct(
1412 struct dce110_clk_src *clk_src,
1413 struct dc_context *ctx,
1414 struct dc_bios *bios,
1415 enum clock_source_id id,
1416 const struct dce110_clk_src_regs *regs,
1417 const struct dce110_clk_src_shift *cs_shift,
1418 const struct dce110_clk_src_mask *cs_mask)
1419 {
1420 struct calc_pll_clock_source_init_data calc_pll_cs_init_data_hdmi;
1421 struct calc_pll_clock_source_init_data calc_pll_cs_init_data;
1422
1423 clk_src->base.ctx = ctx;
1424 clk_src->bios = bios;
1425 clk_src->base.id = id;
1426 clk_src->base.funcs = &dce110_clk_src_funcs;
1427
1428 clk_src->regs = regs;
1429 clk_src->cs_shift = cs_shift;
1430 clk_src->cs_mask = cs_mask;
1431
1432 if (!clk_src->bios->fw_info_valid) {
1433 ASSERT_CRITICAL(false);
1434 goto unexpected_failure;
1435 }
1436
1437 clk_src->ext_clk_khz = clk_src->bios->fw_info.external_clock_source_frequency_for_dp;
1438
1439 /* structure normally used with PLL ranges from ATOMBIOS; DS on by default */
1440 calc_pll_cs_init_data.bp = bios;
1441 calc_pll_cs_init_data.min_pix_clk_pll_post_divider = 1;
1442 calc_pll_cs_init_data.max_pix_clk_pll_post_divider =
1443 clk_src->cs_mask->PLL_POST_DIV_PIXCLK;
1444 calc_pll_cs_init_data.min_pll_ref_divider = 1;
1445 calc_pll_cs_init_data.max_pll_ref_divider = clk_src->cs_mask->PLL_REF_DIV;
1446 /* when 0 use minInputPxlClkPLLFrequencyInKHz from firmwareInfo*/
1447 calc_pll_cs_init_data.min_override_input_pxl_clk_pll_freq_khz = 0;
1448 /* when 0 use maxInputPxlClkPLLFrequencyInKHz from firmwareInfo*/
1449 calc_pll_cs_init_data.max_override_input_pxl_clk_pll_freq_khz = 0;
1450 /*numberOfFractFBDividerDecimalPoints*/
1451 calc_pll_cs_init_data.num_fract_fb_divider_decimal_point =
1452 FRACT_FB_DIVIDER_DEC_POINTS_MAX_NUM;
1453 /*number of decimal point to round off for fractional feedback divider value*/
1454 calc_pll_cs_init_data.num_fract_fb_divider_decimal_point_precision =
1455 FRACT_FB_DIVIDER_DEC_POINTS_MAX_NUM;
1456 calc_pll_cs_init_data.ctx = ctx;
1457
1458 /*structure for HDMI, no SS or SS% <= 0.06% for 27 MHz Ref clock */
1459 calc_pll_cs_init_data_hdmi.bp = bios;
1460 calc_pll_cs_init_data_hdmi.min_pix_clk_pll_post_divider = 1;
1461 calc_pll_cs_init_data_hdmi.max_pix_clk_pll_post_divider =
1462 clk_src->cs_mask->PLL_POST_DIV_PIXCLK;
1463 calc_pll_cs_init_data_hdmi.min_pll_ref_divider = 1;
1464 calc_pll_cs_init_data_hdmi.max_pll_ref_divider = clk_src->cs_mask->PLL_REF_DIV;
1465 /* when 0 use minInputPxlClkPLLFrequencyInKHz from firmwareInfo*/
1466 calc_pll_cs_init_data_hdmi.min_override_input_pxl_clk_pll_freq_khz = 13500;
1467 /* when 0 use maxInputPxlClkPLLFrequencyInKHz from firmwareInfo*/
1468 calc_pll_cs_init_data_hdmi.max_override_input_pxl_clk_pll_freq_khz = 27000;
1469 /*numberOfFractFBDividerDecimalPoints*/
1470 calc_pll_cs_init_data_hdmi.num_fract_fb_divider_decimal_point =
1471 FRACT_FB_DIVIDER_DEC_POINTS_MAX_NUM;
1472 /*number of decimal point to round off for fractional feedback divider value*/
1473 calc_pll_cs_init_data_hdmi.num_fract_fb_divider_decimal_point_precision =
1474 FRACT_FB_DIVIDER_DEC_POINTS_MAX_NUM;
1475 calc_pll_cs_init_data_hdmi.ctx = ctx;
1476
1477 clk_src->ref_freq_khz = clk_src->bios->fw_info.pll_info.crystal_frequency;
1478
1479 if (clk_src->base.id == CLOCK_SOURCE_ID_EXTERNAL)
1480 return true;
1481
1482 /* PLL only from here on */
1483 ss_info_from_atombios_create(clk_src);
1484
1485 if (!calc_pll_max_vco_construct(
1486 &clk_src->calc_pll,
1487 &calc_pll_cs_init_data)) {
1488 ASSERT_CRITICAL(false);
1489 goto unexpected_failure;
1490 }
1491
1492
1493 calc_pll_cs_init_data_hdmi.
1494 min_override_input_pxl_clk_pll_freq_khz = clk_src->ref_freq_khz/2;
1495 calc_pll_cs_init_data_hdmi.
1496 max_override_input_pxl_clk_pll_freq_khz = clk_src->ref_freq_khz;
1497
1498
1499 if (!calc_pll_max_vco_construct(
1500 &clk_src->calc_pll_hdmi, &calc_pll_cs_init_data_hdmi)) {
1501 ASSERT_CRITICAL(false);
1502 goto unexpected_failure;
1503 }
1504
1505 return true;
1506
1507 unexpected_failure:
1508 return false;
1509 }
1510
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)1511 bool dce112_clk_src_construct(
1512 struct dce110_clk_src *clk_src,
1513 struct dc_context *ctx,
1514 struct dc_bios *bios,
1515 enum clock_source_id id,
1516 const struct dce110_clk_src_regs *regs,
1517 const struct dce110_clk_src_shift *cs_shift,
1518 const struct dce110_clk_src_mask *cs_mask)
1519 {
1520 clk_src->base.ctx = ctx;
1521 clk_src->bios = bios;
1522 clk_src->base.id = id;
1523 clk_src->base.funcs = &dce112_clk_src_funcs;
1524
1525 clk_src->regs = regs;
1526 clk_src->cs_shift = cs_shift;
1527 clk_src->cs_mask = cs_mask;
1528
1529 if (!clk_src->bios->fw_info_valid) {
1530 ASSERT_CRITICAL(false);
1531 return false;
1532 }
1533
1534 clk_src->ext_clk_khz = clk_src->bios->fw_info.external_clock_source_frequency_for_dp;
1535
1536 return true;
1537 }
1538
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)1539 bool dcn20_clk_src_construct(
1540 struct dce110_clk_src *clk_src,
1541 struct dc_context *ctx,
1542 struct dc_bios *bios,
1543 enum clock_source_id id,
1544 const struct dce110_clk_src_regs *regs,
1545 const struct dce110_clk_src_shift *cs_shift,
1546 const struct dce110_clk_src_mask *cs_mask)
1547 {
1548 bool ret = dce112_clk_src_construct(clk_src, ctx, bios, id, regs, cs_shift, cs_mask);
1549
1550 clk_src->base.funcs = &dcn20_clk_src_funcs;
1551
1552 return ret;
1553 }
1554
1555 #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)1556 bool dcn3_clk_src_construct(
1557 struct dce110_clk_src *clk_src,
1558 struct dc_context *ctx,
1559 struct dc_bios *bios,
1560 enum clock_source_id id,
1561 const struct dce110_clk_src_regs *regs,
1562 const struct dce110_clk_src_shift *cs_shift,
1563 const struct dce110_clk_src_mask *cs_mask)
1564 {
1565 bool ret = dce112_clk_src_construct(clk_src, ctx, bios, id, regs, cs_shift, cs_mask);
1566
1567 clk_src->base.funcs = &dcn3_clk_src_funcs;
1568
1569 return ret;
1570 }
1571 #endif
1572