]> git.ipfire.org Git - people/ms/u-boot.git/blob - drivers/video/tegra124/sor.c
projects / people / ms / u-boot.git / blob
? search:


e5cea51d48c81a01494effaba1d7eb674a9c5342
[people/ms/u-boot.git] / drivers / video / tegra124 / sor.c
1 /*
2 * Copyright (c) 2011-2013, NVIDIA Corporation.
3 *
4 * SPDX-License-Identifier: GPL-2.0
5 */
6
7 #include <common.h>
8 #include <dm.h>
9 #include <errno.h>
10 #include <fdtdec.h>
11 #include <malloc.h>
12 #include <panel.h>
13 #include <video_bridge.h>
14 #include <asm/io.h>
15 #include <asm/arch/clock.h>
16 #include <asm/arch-tegra/dc.h>
17 #include "displayport.h"
18 #include "sor.h"
19
20 DECLARE_GLOBAL_DATA_PTR;
21
22 #define DEBUG_SOR 0
23
24 #define APBDEV_PMC_DPD_SAMPLE 0x20
25 #define APBDEV_PMC_DPD_SAMPLE_ON_DISABLE 0
26 #define APBDEV_PMC_DPD_SAMPLE_ON_ENABLE 1
27 #define APBDEV_PMC_SEL_DPD_TIM 0x1c8
28 #define APBDEV_PMC_SEL_DPD_TIM_SEL_DPD_TIM_DEFAULT 0x7f
29 #define APBDEV_PMC_IO_DPD2_REQ 0x1c0
30 #define APBDEV_PMC_IO_DPD2_REQ_LVDS_SHIFT 25
31 #define APBDEV_PMC_IO_DPD2_REQ_LVDS_OFF (0 << 25)
32 #define APBDEV_PMC_IO_DPD2_REQ_LVDS_ON (1 << 25)
33 #define APBDEV_PMC_IO_DPD2_REQ_CODE_SHIFT 30
34 #define APBDEV_PMC_IO_DPD2_REQ_CODE_DEFAULT_MASK (0x3 << 30)
35 #define APBDEV_PMC_IO_DPD2_REQ_CODE_IDLE (0 << 30)
36 #define APBDEV_PMC_IO_DPD2_REQ_CODE_DPD_OFF (1 << 30)
37 #define APBDEV_PMC_IO_DPD2_REQ_CODE_DPD_ON (2 << 30)
38 #define APBDEV_PMC_IO_DPD2_STATUS 0x1c4
39 #define APBDEV_PMC_IO_DPD2_STATUS_LVDS_SHIFT 25
40 #define APBDEV_PMC_IO_DPD2_STATUS_LVDS_OFF (0 << 25)
41 #define APBDEV_PMC_IO_DPD2_STATUS_LVDS_ON (1 << 25)
42
43 struct tegra_dc_sor_data {
44 void *base;
45 void *pmc_base;
46 u8 portnum; /* 0 or 1 */
47 int power_is_up;
48 struct udevice *panel;
49 };
50
51 static inline u32 tegra_sor_readl(struct tegra_dc_sor_data *sor, u32 reg)
52 {
53 return readl((u32 *)sor->base + reg);
54 }
55
56 static inline void tegra_sor_writel(struct tegra_dc_sor_data *sor, u32 reg,
57 u32 val)
58 {
59 writel(val, (u32 *)sor->base + reg);
60 }
61
62 static inline void tegra_sor_write_field(struct tegra_dc_sor_data *sor,
63 u32 reg, u32 mask, u32 val)
64 {
65 u32 reg_val = tegra_sor_readl(sor, reg);
66 reg_val &= ~mask;
67 reg_val |= val;
68 tegra_sor_writel(sor, reg, reg_val);
69 }
70
71 void tegra_dp_disable_tx_pu(struct udevice *dev)
72 {
73 struct tegra_dc_sor_data *sor = dev_get_priv(dev);
74
75 tegra_sor_write_field(sor, DP_PADCTL(sor->portnum),
76 DP_PADCTL_TX_PU_MASK, DP_PADCTL_TX_PU_DISABLE);
77 }
78
79 void tegra_dp_set_pe_vs_pc(struct udevice *dev, u32 mask, u32 pe_reg,
80 u32 vs_reg, u32 pc_reg, u8 pc_supported)
81 {
82 struct tegra_dc_sor_data *sor = dev_get_priv(dev);
83
84 tegra_sor_write_field(sor, PR(sor->portnum), mask, pe_reg);
85 tegra_sor_write_field(sor, DC(sor->portnum), mask, vs_reg);
86 if (pc_supported) {
87 tegra_sor_write_field(sor, POSTCURSOR(sor->portnum), mask,
88 pc_reg);
89 }
90 }
91
92 static int tegra_dc_sor_poll_register(struct tegra_dc_sor_data *sor, u32 reg,
93 u32 mask, u32 exp_val,
94 int poll_interval_us, int timeout_ms)
95 {
96 u32 reg_val = 0;
97 ulong start;
98
99 start = get_timer(0);
100 do {
101 reg_val = tegra_sor_readl(sor, reg);
102 if (((reg_val & mask) == exp_val))
103 return 0;
104 udelay(poll_interval_us);
105 } while (get_timer(start) < timeout_ms);
106
107 debug("sor_poll_register 0x%x: timeout, (reg_val)0x%08x & (mask)0x%08x != (exp_val)0x%08x\n",
108 reg, reg_val, mask, exp_val);
109
110 return -ETIMEDOUT;
111 }
112
113 int tegra_dc_sor_set_power_state(struct udevice *dev, int pu_pd)
114 {
115 struct tegra_dc_sor_data *sor = dev_get_priv(dev);
116 u32 reg_val;
117 u32 orig_val;
118
119 orig_val = tegra_sor_readl(sor, PWR);
120
121 reg_val = pu_pd ? PWR_NORMAL_STATE_PU :
122 PWR_NORMAL_STATE_PD; /* normal state only */
123
124 if (reg_val == orig_val)
125 return 0; /* No update needed */
126
127 reg_val |= PWR_SETTING_NEW_TRIGGER;
128 tegra_sor_writel(sor, PWR, reg_val);
129
130 /* Poll to confirm it is done */
131 if (tegra_dc_sor_poll_register(sor, PWR,
132 PWR_SETTING_NEW_DEFAULT_MASK,
133 PWR_SETTING_NEW_DONE,
134 100, TEGRA_SOR_TIMEOUT_MS)) {
135 debug("dc timeout waiting for SOR_PWR = NEW_DONE\n");
136 return -EFAULT;
137 }
138
139 return 0;
140 }
141
142 void tegra_dc_sor_set_dp_linkctl(struct udevice *dev, int ena,
143 u8 training_pattern,
144 const struct tegra_dp_link_config *link_cfg)
145 {
146 struct tegra_dc_sor_data *sor = dev_get_priv(dev);
147 u32 reg_val;
148
149 reg_val = tegra_sor_readl(sor, DP_LINKCTL(sor->portnum));
150
151 if (ena)
152 reg_val |= DP_LINKCTL_ENABLE_YES;
153 else
154 reg_val &= DP_LINKCTL_ENABLE_NO;
155
156 reg_val &= ~DP_LINKCTL_TUSIZE_MASK;
157 reg_val |= (link_cfg->tu_size << DP_LINKCTL_TUSIZE_SHIFT);
158
159 if (link_cfg->enhanced_framing)
160 reg_val |= DP_LINKCTL_ENHANCEDFRAME_ENABLE;
161
162 tegra_sor_writel(sor, DP_LINKCTL(sor->portnum), reg_val);
163
164 switch (training_pattern) {
165 case training_pattern_1:
166 tegra_sor_writel(sor, DP_TPG, 0x41414141);
167 break;
168 case training_pattern_2:
169 case training_pattern_3:
170 reg_val = (link_cfg->link_bw == SOR_LINK_SPEED_G5_4) ?
171 0x43434343 : 0x42424242;
172 tegra_sor_writel(sor, DP_TPG, reg_val);
173 break;
174 default:
175 tegra_sor_writel(sor, DP_TPG, 0x50505050);
176 break;
177 }
178 }
179
180 static int tegra_dc_sor_enable_lane_sequencer(struct tegra_dc_sor_data *sor,
181 int pu, int is_lvds)
182 {
183 u32 reg_val;
184
185 /* SOR lane sequencer */
186 if (pu) {
187 reg_val = LANE_SEQ_CTL_SETTING_NEW_TRIGGER |
188 LANE_SEQ_CTL_SEQUENCE_DOWN |
189 LANE_SEQ_CTL_NEW_POWER_STATE_PU;
190 } else {
191 reg_val = LANE_SEQ_CTL_SETTING_NEW_TRIGGER |
192 LANE_SEQ_CTL_SEQUENCE_UP |
193 LANE_SEQ_CTL_NEW_POWER_STATE_PD;
194 }
195
196 if (is_lvds)
197 reg_val |= 15 << LANE_SEQ_CTL_DELAY_SHIFT;
198 else
199 reg_val |= 1 << LANE_SEQ_CTL_DELAY_SHIFT;
200
201 tegra_sor_writel(sor, LANE_SEQ_CTL, reg_val);
202
203 if (tegra_dc_sor_poll_register(sor, LANE_SEQ_CTL,
204 LANE_SEQ_CTL_SETTING_MASK,
205 LANE_SEQ_CTL_SETTING_NEW_DONE,
206 100, TEGRA_SOR_TIMEOUT_MS)) {
207 debug("dp: timeout while waiting for SOR lane sequencer to power down lanes\n");
208 return -1;
209 }
210
211 return 0;
212 }
213
214 static int tegra_dc_sor_power_dplanes(struct udevice *dev,
215 u32 lane_count, int pu)
216 {
217 struct tegra_dc_sor_data *sor = dev_get_priv(dev);
218 u32 reg_val;
219
220 reg_val = tegra_sor_readl(sor, DP_PADCTL(sor->portnum));
221
222 if (pu) {
223 switch (lane_count) {
224 case 4:
225 reg_val |= (DP_PADCTL_PD_TXD_3_NO |
226 DP_PADCTL_PD_TXD_2_NO);
227 /* fall through */
228 case 2:
229 reg_val |= DP_PADCTL_PD_TXD_1_NO;
230 case 1:
231 reg_val |= DP_PADCTL_PD_TXD_0_NO;
232 break;
233 default:
234 debug("dp: invalid lane number %d\n", lane_count);
235 return -1;
236 }
237
238 tegra_sor_writel(sor, DP_PADCTL(sor->portnum), reg_val);
239 tegra_dc_sor_set_lane_count(dev, lane_count);
240 }
241
242 return tegra_dc_sor_enable_lane_sequencer(sor, pu, 0);
243 }
244
245 void tegra_dc_sor_set_panel_power(struct udevice *dev, int power_up)
246 {
247 struct tegra_dc_sor_data *sor = dev_get_priv(dev);
248 u32 reg_val;
249
250 reg_val = tegra_sor_readl(sor, DP_PADCTL(sor->portnum));
251
252 if (power_up)
253 reg_val |= DP_PADCTL_PAD_CAL_PD_POWERUP;
254 else
255 reg_val &= ~DP_PADCTL_PAD_CAL_PD_POWERUP;
256
257 tegra_sor_writel(sor, DP_PADCTL(sor->portnum), reg_val);
258 }
259
260 static void tegra_dc_sor_config_pwm(struct tegra_dc_sor_data *sor, u32 pwm_div,
261 u32 pwm_dutycycle)
262 {
263 tegra_sor_writel(sor, PWM_DIV, pwm_div);
264 tegra_sor_writel(sor, PWM_CTL,
265 (pwm_dutycycle & PWM_CTL_DUTY_CYCLE_MASK) |
266 PWM_CTL_SETTING_NEW_TRIGGER);
267
268 if (tegra_dc_sor_poll_register(sor, PWM_CTL,
269 PWM_CTL_SETTING_NEW_SHIFT,
270 PWM_CTL_SETTING_NEW_DONE,
271 100, TEGRA_SOR_TIMEOUT_MS)) {
272 debug("dp: timeout while waiting for SOR PWM setting\n");
273 }
274 }
275
276 static void tegra_dc_sor_set_dp_mode(struct udevice *dev,
277 const struct tegra_dp_link_config *link_cfg)
278 {
279 struct tegra_dc_sor_data *sor = dev_get_priv(dev);
280 u32 reg_val;
281
282 tegra_dc_sor_set_link_bandwidth(dev, link_cfg->link_bw);
283
284 tegra_dc_sor_set_dp_linkctl(dev, 1, training_pattern_none, link_cfg);
285 reg_val = tegra_sor_readl(sor, DP_CONFIG(sor->portnum));
286 reg_val &= ~DP_CONFIG_WATERMARK_MASK;
287 reg_val |= link_cfg->watermark;
288 reg_val &= ~DP_CONFIG_ACTIVESYM_COUNT_MASK;
289 reg_val |= (link_cfg->active_count <<
290 DP_CONFIG_ACTIVESYM_COUNT_SHIFT);
291 reg_val &= ~DP_CONFIG_ACTIVESYM_FRAC_MASK;
292 reg_val |= (link_cfg->active_frac <<
293 DP_CONFIG_ACTIVESYM_FRAC_SHIFT);
294 if (link_cfg->activepolarity)
295 reg_val |= DP_CONFIG_ACTIVESYM_POLARITY_POSITIVE;
296 else
297 reg_val &= ~DP_CONFIG_ACTIVESYM_POLARITY_POSITIVE;
298 reg_val |= (DP_CONFIG_ACTIVESYM_CNTL_ENABLE |
299 DP_CONFIG_RD_RESET_VAL_NEGATIVE);
300
301 tegra_sor_writel(sor, DP_CONFIG(sor->portnum), reg_val);
302
303 /* program h/vblank sym */
304 tegra_sor_write_field(sor, DP_AUDIO_HBLANK_SYMBOLS,
305 DP_AUDIO_HBLANK_SYMBOLS_MASK,
306 link_cfg->hblank_sym);
307
308 tegra_sor_write_field(sor, DP_AUDIO_VBLANK_SYMBOLS,
309 DP_AUDIO_VBLANK_SYMBOLS_MASK,
310 link_cfg->vblank_sym);
311 }
312
313 static inline void tegra_dc_sor_super_update(struct tegra_dc_sor_data *sor)
314 {
315 tegra_sor_writel(sor, SUPER_STATE0, 0);
316 tegra_sor_writel(sor, SUPER_STATE0, 1);
317 tegra_sor_writel(sor, SUPER_STATE0, 0);
318 }
319
320 static inline void tegra_dc_sor_update(struct tegra_dc_sor_data *sor)
321 {
322 tegra_sor_writel(sor, STATE0, 0);
323 tegra_sor_writel(sor, STATE0, 1);
324 tegra_sor_writel(sor, STATE0, 0);
325 }
326
327 static int tegra_dc_sor_io_set_dpd(struct tegra_dc_sor_data *sor, int up)
328 {
329 u32 reg_val;
330 void *pmc_base = sor->pmc_base;
331
332 if (up) {
333 writel(APBDEV_PMC_DPD_SAMPLE_ON_ENABLE,
334 pmc_base + APBDEV_PMC_DPD_SAMPLE);
335 writel(10, pmc_base + APBDEV_PMC_SEL_DPD_TIM);
336 }
337
338 reg_val = readl(pmc_base + APBDEV_PMC_IO_DPD2_REQ);
339 reg_val &= ~(APBDEV_PMC_IO_DPD2_REQ_LVDS_ON ||
340 APBDEV_PMC_IO_DPD2_REQ_CODE_DEFAULT_MASK);
341
342 reg_val = up ? APBDEV_PMC_IO_DPD2_REQ_LVDS_ON |
343 APBDEV_PMC_IO_DPD2_REQ_CODE_DPD_OFF :
344 APBDEV_PMC_IO_DPD2_REQ_LVDS_OFF |
345 APBDEV_PMC_IO_DPD2_REQ_CODE_DPD_ON;
346
347 writel(reg_val, pmc_base + APBDEV_PMC_IO_DPD2_REQ);
348
349 /* Polling */
350 u32 temp = 10 * 1000;
351 do {
352 udelay(20);
353 reg_val = readl(pmc_base + APBDEV_PMC_IO_DPD2_STATUS);
354 if (temp > 20)
355 temp -= 20;
356 else
357 break;
358 } while ((reg_val & APBDEV_PMC_IO_DPD2_STATUS_LVDS_ON) != 0);
359
360 if ((reg_val & APBDEV_PMC_IO_DPD2_STATUS_LVDS_ON) != 0) {
361 debug("PMC_IO_DPD2 polling failed (0x%x)\n", reg_val);
362 return -EIO;
363 }
364
365 if (up) {
366 writel(APBDEV_PMC_DPD_SAMPLE_ON_DISABLE,
367 pmc_base + APBDEV_PMC_DPD_SAMPLE);
368 }
369
370 return 0;
371 }
372
373 void tegra_dc_sor_set_internal_panel(struct udevice *dev, int is_int)
374 {
375 struct tegra_dc_sor_data *sor = dev_get_priv(dev);
376 u32 reg_val;
377
378 reg_val = tegra_sor_readl(sor, DP_SPARE(sor->portnum));
379 if (is_int)
380 reg_val |= DP_SPARE_PANEL_INTERNAL;
381 else
382 reg_val &= ~DP_SPARE_PANEL_INTERNAL;
383
384 reg_val |= DP_SPARE_SOR_CLK_SEL_MACRO_SORCLK |
385 DP_SPARE_SEQ_ENABLE_YES;
386 tegra_sor_writel(sor, DP_SPARE(sor->portnum), reg_val);
387 }
388
389 void tegra_dc_sor_read_link_config(struct udevice *dev, u8 *link_bw,
390 u8 *lane_count)
391 {
392 struct tegra_dc_sor_data *sor = dev_get_priv(dev);
393 u32 reg_val;
394
395 reg_val = tegra_sor_readl(sor, CLK_CNTRL);
396 *link_bw = (reg_val & CLK_CNTRL_DP_LINK_SPEED_MASK)
397 >> CLK_CNTRL_DP_LINK_SPEED_SHIFT;
398 reg_val = tegra_sor_readl(sor,
399 DP_LINKCTL(sor->portnum));
400
401 switch (reg_val & DP_LINKCTL_LANECOUNT_MASK) {
402 case DP_LINKCTL_LANECOUNT_ZERO:
403 *lane_count = 0;
404 break;
405 case DP_LINKCTL_LANECOUNT_ONE:
406 *lane_count = 1;
407 break;
408 case DP_LINKCTL_LANECOUNT_TWO:
409 *lane_count = 2;
410 break;
411 case DP_LINKCTL_LANECOUNT_FOUR:
412 *lane_count = 4;
413 break;
414 default:
415 printf("Unknown lane count\n");
416 }
417 }
418
419 void tegra_dc_sor_set_link_bandwidth(struct udevice *dev, u8 link_bw)
420 {
421 struct tegra_dc_sor_data *sor = dev_get_priv(dev);
422
423 tegra_sor_write_field(sor, CLK_CNTRL,
424 CLK_CNTRL_DP_LINK_SPEED_MASK,
425 link_bw << CLK_CNTRL_DP_LINK_SPEED_SHIFT);
426 }
427
428 void tegra_dc_sor_set_lane_count(struct udevice *dev, u8 lane_count)
429 {
430 struct tegra_dc_sor_data *sor = dev_get_priv(dev);
431 u32 reg_val;
432
433 reg_val = tegra_sor_readl(sor, DP_LINKCTL(sor->portnum));
434 reg_val &= ~DP_LINKCTL_LANECOUNT_MASK;
435 switch (lane_count) {
436 case 0:
437 break;
438 case 1:
439 reg_val |= DP_LINKCTL_LANECOUNT_ONE;
440 break;
441 case 2:
442 reg_val |= DP_LINKCTL_LANECOUNT_TWO;
443 break;
444 case 4:
445 reg_val |= DP_LINKCTL_LANECOUNT_FOUR;
446 break;
447 default:
448 /* 0 should be handled earlier. */
449 printf("dp: Invalid lane count %d\n", lane_count);
450 return;
451 }
452 tegra_sor_writel(sor, DP_LINKCTL(sor->portnum), reg_val);
453 }
454
455 /*
456 * The SOR power sequencer does not work for t124 so SW has to
457 * go through the power sequence manually
458 * Power up steps from spec:
459 * STEP PDPORT PDPLL PDBG PLLVCOD PLLCAPD E_DPD PDCAL
460 * 1 1 1 1 1 1 1 1
461 * 2 1 1 1 1 1 0 1
462 * 3 1 1 0 1 1 0 1
463 * 4 1 0 0 0 0 0 1
464 * 5 0 0 0 0 0 0 1
465 */
466 static int tegra_dc_sor_power_up(struct udevice *dev, int is_lvds)
467 {
468 struct tegra_dc_sor_data *sor = dev_get_priv(dev);
469 int ret;
470
471 if (sor->power_is_up)
472 return 0;
473
474 /* Set link bw */
475 tegra_dc_sor_set_link_bandwidth(dev, is_lvds ?
476 CLK_CNTRL_DP_LINK_SPEED_LVDS :
477 CLK_CNTRL_DP_LINK_SPEED_G1_62);
478
479 /* step 1 */
480 tegra_sor_write_field(sor, PLL2,
481 PLL2_AUX7_PORT_POWERDOWN_MASK | /* PDPORT */
482 PLL2_AUX6_BANDGAP_POWERDOWN_MASK | /* PDBG */
483 PLL2_AUX8_SEQ_PLLCAPPD_ENFORCE_MASK, /* PLLCAPD */
484 PLL2_AUX7_PORT_POWERDOWN_ENABLE |
485 PLL2_AUX6_BANDGAP_POWERDOWN_ENABLE |
486 PLL2_AUX8_SEQ_PLLCAPPD_ENFORCE_ENABLE);
487 tegra_sor_write_field(sor, PLL0, PLL0_PWR_MASK | /* PDPLL */
488 PLL0_VCOPD_MASK, /* PLLVCOPD */
489 PLL0_PWR_OFF | PLL0_VCOPD_ASSERT);
490 tegra_sor_write_field(sor, DP_PADCTL(sor->portnum),
491 DP_PADCTL_PAD_CAL_PD_POWERDOWN, /* PDCAL */
492 DP_PADCTL_PAD_CAL_PD_POWERDOWN);
493
494 /* step 2 */
495 ret = tegra_dc_sor_io_set_dpd(sor, 1);
496 if (ret)
497 return ret;
498 udelay(15);
499
500 /* step 3 */
501 tegra_sor_write_field(sor, PLL2,
502 PLL2_AUX6_BANDGAP_POWERDOWN_MASK,
503 PLL2_AUX6_BANDGAP_POWERDOWN_DISABLE);
504 udelay(25);
505
506 /* step 4 */
507 tegra_sor_write_field(sor, PLL0,
508 PLL0_PWR_MASK | /* PDPLL */
509 PLL0_VCOPD_MASK, /* PLLVCOPD */
510 PLL0_PWR_ON | PLL0_VCOPD_RESCIND);
511 /* PLLCAPD */
512 tegra_sor_write_field(sor, PLL2,
513 PLL2_AUX8_SEQ_PLLCAPPD_ENFORCE_MASK,
514 PLL2_AUX8_SEQ_PLLCAPPD_ENFORCE_DISABLE);
515 udelay(225);
516
517 /* step 5 PDPORT */
518 tegra_sor_write_field(sor, PLL2,
519 PLL2_AUX7_PORT_POWERDOWN_MASK,
520 PLL2_AUX7_PORT_POWERDOWN_DISABLE);
521
522 sor->power_is_up = 1;
523
524 return 0;
525 }
526
527 #if DEBUG_SOR
528 static void dump_sor_reg(struct tegra_dc_sor_data *sor)
529 {
530 #define DUMP_REG(a) printk(BIOS_INFO, "%-32s %03x %08x\n", \
531 #a, a, tegra_sor_readl(sor, a));
532
533 DUMP_REG(SUPER_STATE0);
534 DUMP_REG(SUPER_STATE1);
535 DUMP_REG(STATE0);
536 DUMP_REG(STATE1);
537 DUMP_REG(NV_HEAD_STATE0(0));
538 DUMP_REG(NV_HEAD_STATE0(1));
539 DUMP_REG(NV_HEAD_STATE1(0));
540 DUMP_REG(NV_HEAD_STATE1(1));
541 DUMP_REG(NV_HEAD_STATE2(0));
542 DUMP_REG(NV_HEAD_STATE2(1));
543 DUMP_REG(NV_HEAD_STATE3(0));
544 DUMP_REG(NV_HEAD_STATE3(1));
545 DUMP_REG(NV_HEAD_STATE4(0));
546 DUMP_REG(NV_HEAD_STATE4(1));
547 DUMP_REG(NV_HEAD_STATE5(0));
548 DUMP_REG(NV_HEAD_STATE5(1));
549 DUMP_REG(CRC_CNTRL);
550 DUMP_REG(CLK_CNTRL);
551 DUMP_REG(CAP);
552 DUMP_REG(PWR);
553 DUMP_REG(TEST);
554 DUMP_REG(PLL0);
555 DUMP_REG(PLL1);
556 DUMP_REG(PLL2);
557 DUMP_REG(PLL3);
558 DUMP_REG(CSTM);
559 DUMP_REG(LVDS);
560 DUMP_REG(CRCA);
561 DUMP_REG(CRCB);
562 DUMP_REG(SEQ_CTL);
563 DUMP_REG(LANE_SEQ_CTL);
564 DUMP_REG(SEQ_INST(0));
565 DUMP_REG(SEQ_INST(1));
566 DUMP_REG(SEQ_INST(2));
567 DUMP_REG(SEQ_INST(3));
568 DUMP_REG(SEQ_INST(4));
569 DUMP_REG(SEQ_INST(5));
570 DUMP_REG(SEQ_INST(6));
571 DUMP_REG(SEQ_INST(7));
572 DUMP_REG(SEQ_INST(8));
573 DUMP_REG(PWM_DIV);
574 DUMP_REG(PWM_CTL);
575 DUMP_REG(MSCHECK);
576 DUMP_REG(XBAR_CTRL);
577 DUMP_REG(DP_LINKCTL(0));
578 DUMP_REG(DP_LINKCTL(1));
579 DUMP_REG(DC(0));
580 DUMP_REG(DC(1));
581 DUMP_REG(LANE_DRIVE_CURRENT(0));
582 DUMP_REG(PR(0));
583 DUMP_REG(LANE4_PREEMPHASIS(0));
584 DUMP_REG(POSTCURSOR(0));
585 DUMP_REG(DP_CONFIG(0));
586 DUMP_REG(DP_CONFIG(1));
587 DUMP_REG(DP_MN(0));
588 DUMP_REG(DP_MN(1));
589 DUMP_REG(DP_PADCTL(0));
590 DUMP_REG(DP_PADCTL(1));
591 DUMP_REG(DP_DEBUG(0));
592 DUMP_REG(DP_DEBUG(1));
593 DUMP_REG(DP_SPARE(0));
594 DUMP_REG(DP_SPARE(1));
595 DUMP_REG(DP_TPG);
596
597 return;
598 }
599 #endif
600
601 static void tegra_dc_sor_config_panel(struct tegra_dc_sor_data *sor,
602 int is_lvds,
603 const struct tegra_dp_link_config *link_cfg,
604 const struct display_timing *timing)
605 {
606 const int head_num = 0;
607 u32 reg_val = STATE1_ASY_OWNER_HEAD0 << head_num;
608 u32 vtotal, htotal;
609 u32 vsync_end, hsync_end;
610 u32 vblank_end, hblank_end;
611 u32 vblank_start, hblank_start;
612
613 reg_val |= is_lvds ? STATE1_ASY_PROTOCOL_LVDS_CUSTOM :
614 STATE1_ASY_PROTOCOL_DP_A;
615 reg_val |= STATE1_ASY_SUBOWNER_NONE |
616 STATE1_ASY_CRCMODE_COMPLETE_RASTER;
617
618 reg_val |= STATE1_ASY_HSYNCPOL_NEGATIVE_TRUE;
619 reg_val |= STATE1_ASY_VSYNCPOL_NEGATIVE_TRUE;
620 reg_val |= (link_cfg->bits_per_pixel > 18) ?
621 STATE1_ASY_PIXELDEPTH_BPP_24_444 :
622 STATE1_ASY_PIXELDEPTH_BPP_18_444;
623
624 tegra_sor_writel(sor, STATE1, reg_val);
625
626 /*
627 * Skipping programming NV_HEAD_STATE0, assuming:
628 * interlacing: PROGRESSIVE, dynamic range: VESA, colorspace: RGB
629 */
630 vtotal = timing->vsync_len.typ + timing->vback_porch.typ +
631 timing->vactive.typ + timing->vfront_porch.typ;
632 htotal = timing->hsync_len.typ + timing->hback_porch.typ +
633 timing->hactive.typ + timing->hfront_porch.typ;
634
635 tegra_sor_writel(sor, NV_HEAD_STATE1(head_num),
636 vtotal << NV_HEAD_STATE1_VTOTAL_SHIFT |
637 htotal << NV_HEAD_STATE1_HTOTAL_SHIFT);
638
639 vsync_end = timing->vsync_len.typ - 1;
640 hsync_end = timing->hsync_len.typ - 1;
641 tegra_sor_writel(sor, NV_HEAD_STATE2(head_num),
642 vsync_end << NV_HEAD_STATE2_VSYNC_END_SHIFT |
643 hsync_end << NV_HEAD_STATE2_HSYNC_END_SHIFT);
644
645 vblank_end = vsync_end + timing->vback_porch.typ;
646 hblank_end = hsync_end + timing->hback_porch.typ;
647 tegra_sor_writel(sor, NV_HEAD_STATE3(head_num),
648 vblank_end << NV_HEAD_STATE3_VBLANK_END_SHIFT |
649 hblank_end << NV_HEAD_STATE3_HBLANK_END_SHIFT);
650
651 vblank_start = vblank_end + timing->vactive.typ;
652 hblank_start = hblank_end + timing->hactive.typ;
653 tegra_sor_writel(sor, NV_HEAD_STATE4(head_num),
654 vblank_start << NV_HEAD_STATE4_VBLANK_START_SHIFT |
655 hblank_start << NV_HEAD_STATE4_HBLANK_START_SHIFT);
656
657 /* TODO: adding interlace mode support */
658 tegra_sor_writel(sor, NV_HEAD_STATE5(head_num), 0x1);
659
660 tegra_sor_write_field(sor, CSTM,
661 CSTM_ROTCLK_DEFAULT_MASK |
662 CSTM_LVDS_EN_ENABLE,
663 2 << CSTM_ROTCLK_SHIFT |
664 is_lvds ? CSTM_LVDS_EN_ENABLE :
665 CSTM_LVDS_EN_DISABLE);
666
667 tegra_dc_sor_config_pwm(sor, 1024, 1024);
668 }
669
670 static void tegra_dc_sor_enable_dc(struct dc_ctlr *disp_ctrl)
671 {
672 u32 reg_val = readl(&disp_ctrl->cmd.state_access);
673
674 writel(reg_val | WRITE_MUX_ACTIVE, &disp_ctrl->cmd.state_access);
675 writel(VSYNC_H_POSITION(1), &disp_ctrl->disp.disp_timing_opt);
676
677 /* Enable DC now - otherwise pure text console may not show. */
678 writel(CTRL_MODE_C_DISPLAY << CTRL_MODE_SHIFT,
679 &disp_ctrl->cmd.disp_cmd);
680 writel(reg_val, &disp_ctrl->cmd.state_access);
681 }
682
683 int tegra_dc_sor_enable_dp(struct udevice *dev,
684 const struct tegra_dp_link_config *link_cfg)
685 {
686 struct tegra_dc_sor_data *sor = dev_get_priv(dev);
687 int ret;
688
689 tegra_sor_write_field(sor, CLK_CNTRL,
690 CLK_CNTRL_DP_CLK_SEL_MASK,
691 CLK_CNTRL_DP_CLK_SEL_SINGLE_DPCLK);
692
693 tegra_sor_write_field(sor, PLL2,
694 PLL2_AUX6_BANDGAP_POWERDOWN_MASK,
695 PLL2_AUX6_BANDGAP_POWERDOWN_DISABLE);
696 udelay(25);
697
698 tegra_sor_write_field(sor, PLL3,
699 PLL3_PLLVDD_MODE_MASK,
700 PLL3_PLLVDD_MODE_V3_3);
701 tegra_sor_writel(sor, PLL0,
702 0xf << PLL0_ICHPMP_SHFIT |
703 0x3 << PLL0_VCOCAP_SHIFT |
704 PLL0_PLLREG_LEVEL_V45 |
705 PLL0_RESISTORSEL_EXT |
706 PLL0_PWR_ON | PLL0_VCOPD_RESCIND);
707 tegra_sor_write_field(sor, PLL2,
708 PLL2_AUX1_SEQ_MASK |
709 PLL2_AUX9_LVDSEN_OVERRIDE |
710 PLL2_AUX8_SEQ_PLLCAPPD_ENFORCE_MASK,
711 PLL2_AUX1_SEQ_PLLCAPPD_OVERRIDE |
712 PLL2_AUX9_LVDSEN_OVERRIDE |
713 PLL2_AUX8_SEQ_PLLCAPPD_ENFORCE_DISABLE);
714 tegra_sor_writel(sor, PLL1, PLL1_TERM_COMPOUT_HIGH |
715 PLL1_TMDS_TERM_ENABLE);
716
717 if (tegra_dc_sor_poll_register(sor, PLL2,
718 PLL2_AUX8_SEQ_PLLCAPPD_ENFORCE_MASK,
719 PLL2_AUX8_SEQ_PLLCAPPD_ENFORCE_DISABLE,
720 100, TEGRA_SOR_TIMEOUT_MS)) {
721 printf("DP failed to lock PLL\n");
722 return -EIO;
723 }
724
725 tegra_sor_write_field(sor, PLL2, PLL2_AUX2_MASK |
726 PLL2_AUX7_PORT_POWERDOWN_MASK,
727 PLL2_AUX2_OVERRIDE_POWERDOWN |
728 PLL2_AUX7_PORT_POWERDOWN_DISABLE);
729
730 ret = tegra_dc_sor_power_up(dev, 0);
731 if (ret) {
732 debug("DP failed to power up\n");
733 return ret;
734 }
735
736 /* re-enable SOR clock */
737 clock_sor_enable_edp_clock();
738
739 /* Power up lanes */
740 tegra_dc_sor_power_dplanes(dev, link_cfg->lane_count, 1);
741
742 tegra_dc_sor_set_dp_mode(dev, link_cfg);
743 debug("%s ret\n", __func__);
744
745 return 0;
746 }
747
748 int tegra_dc_sor_attach(struct udevice *dc_dev, struct udevice *dev,
749 const struct tegra_dp_link_config *link_cfg,
750 const struct display_timing *timing)
751 {
752 struct tegra_dc_sor_data *sor = dev_get_priv(dev);
753 const void *blob = gd->fdt_blob;
754 struct dc_ctlr *disp_ctrl;
755 u32 reg_val;
756 int node;
757
758 /* Use the first display controller */
759 debug("%s\n", __func__);
760 node = dc_dev->of_offset;
761 disp_ctrl = (struct dc_ctlr *)fdtdec_get_addr(blob, node, "reg");
762
763 tegra_dc_sor_enable_dc(disp_ctrl);
764 tegra_dc_sor_config_panel(sor, 0, link_cfg, timing);
765
766 writel(0x9f00, &disp_ctrl->cmd.state_ctrl);
767 writel(0x9f, &disp_ctrl->cmd.state_ctrl);
768
769 writel(PW0_ENABLE | PW1_ENABLE | PW2_ENABLE | PW3_ENABLE |
770 PW4_ENABLE | PM0_ENABLE | PM1_ENABLE,
771 &disp_ctrl->cmd.disp_pow_ctrl);
772
773 reg_val = tegra_sor_readl(sor, TEST);
774 if (reg_val & TEST_ATTACHED_TRUE)
775 return -EEXIST;
776
777 tegra_sor_writel(sor, SUPER_STATE1,
778 SUPER_STATE1_ATTACHED_NO);
779
780 /*
781 * Enable display2sor clock at least 2 cycles before DC start,
782 * to clear sor internal valid signal.
783 */
784 writel(SOR_ENABLE, &disp_ctrl->disp.disp_win_opt);
785 writel(GENERAL_ACT_REQ, &disp_ctrl->cmd.state_ctrl);
786 writel(0, &disp_ctrl->disp.disp_win_opt);
787 writel(GENERAL_ACT_REQ, &disp_ctrl->cmd.state_ctrl);
788
789 /* Attach head */
790 tegra_dc_sor_update(sor);
791 tegra_sor_writel(sor, SUPER_STATE1,
792 SUPER_STATE1_ATTACHED_YES);
793 tegra_sor_writel(sor, SUPER_STATE1,
794 SUPER_STATE1_ATTACHED_YES |
795 SUPER_STATE1_ASY_HEAD_OP_AWAKE |
796 SUPER_STATE1_ASY_ORMODE_NORMAL);
797 tegra_dc_sor_super_update(sor);
798
799 /* Enable dc */
800 reg_val = readl(&disp_ctrl->cmd.state_access);
801 writel(reg_val | WRITE_MUX_ACTIVE, &disp_ctrl->cmd.state_access);
802 writel(CTRL_MODE_C_DISPLAY << CTRL_MODE_SHIFT,
803 &disp_ctrl->cmd.disp_cmd);
804 writel(SOR_ENABLE, &disp_ctrl->disp.disp_win_opt);
805 writel(reg_val, &disp_ctrl->cmd.state_access);
806
807 if (tegra_dc_sor_poll_register(sor, TEST,
808 TEST_ACT_HEAD_OPMODE_DEFAULT_MASK,
809 TEST_ACT_HEAD_OPMODE_AWAKE,
810 100,
811 TEGRA_SOR_ATTACH_TIMEOUT_MS)) {
812 printf("dc timeout waiting for OPMOD = AWAKE\n");
813 return -ETIMEDOUT;
814 } else {
815 debug("%s: sor is attached\n", __func__);
816 }
817
818 #if DEBUG_SOR
819 dump_sor_reg(sor);
820 #endif
821 debug("%s: ret=%d\n", __func__, 0);
822
823 return 0;
824 }
825
826 void tegra_dc_sor_set_lane_parm(struct udevice *dev,
827 const struct tegra_dp_link_config *link_cfg)
828 {
829 struct tegra_dc_sor_data *sor = dev_get_priv(dev);
830
831 tegra_sor_writel(sor, LANE_DRIVE_CURRENT(sor->portnum),
832 link_cfg->drive_current);
833 tegra_sor_writel(sor, PR(sor->portnum),
834 link_cfg->preemphasis);
835 tegra_sor_writel(sor, POSTCURSOR(sor->portnum),
836 link_cfg->postcursor);
837 tegra_sor_writel(sor, LVDS, 0);
838
839 tegra_dc_sor_set_link_bandwidth(dev, link_cfg->link_bw);
840 tegra_dc_sor_set_lane_count(dev, link_cfg->lane_count);
841
842 tegra_sor_write_field(sor, DP_PADCTL(sor->portnum),
843 DP_PADCTL_TX_PU_ENABLE |
844 DP_PADCTL_TX_PU_VALUE_DEFAULT_MASK,
845 DP_PADCTL_TX_PU_ENABLE |
846 2 << DP_PADCTL_TX_PU_VALUE_SHIFT);
847
848 /* Precharge */
849 tegra_sor_write_field(sor, DP_PADCTL(sor->portnum), 0xf0, 0xf0);
850 udelay(20);
851
852 tegra_sor_write_field(sor, DP_PADCTL(sor->portnum), 0xf0, 0x0);
853 }
854
855 int tegra_dc_sor_set_voltage_swing(struct udevice *dev,
856 const struct tegra_dp_link_config *link_cfg)
857 {
858 struct tegra_dc_sor_data *sor = dev_get_priv(dev);
859 u32 drive_current = 0;
860 u32 pre_emphasis = 0;
861
862 /* Set to a known-good pre-calibrated setting */
863 switch (link_cfg->link_bw) {
864 case SOR_LINK_SPEED_G1_62:
865 case SOR_LINK_SPEED_G2_7:
866 drive_current = 0x13131313;
867 pre_emphasis = 0;
868 break;
869 case SOR_LINK_SPEED_G5_4:
870 debug("T124 does not support 5.4G link clock.\n");
871 default:
872 debug("Invalid sor link bandwidth: %d\n", link_cfg->link_bw);
873 return -ENOLINK;
874 }
875
876 tegra_sor_writel(sor, LANE_DRIVE_CURRENT(sor->portnum), drive_current);
877 tegra_sor_writel(sor, PR(sor->portnum), pre_emphasis);
878
879 return 0;
880 }
881
882 void tegra_dc_sor_power_down_unused_lanes(struct udevice *dev,
883 const struct tegra_dp_link_config *link_cfg)
884 {
885 struct tegra_dc_sor_data *sor = dev_get_priv(dev);
886 u32 pad_ctrl = 0;
887 int err = 0;
888
889 switch (link_cfg->lane_count) {
890 case 4:
891 pad_ctrl = DP_PADCTL_PD_TXD_0_NO |
892 DP_PADCTL_PD_TXD_1_NO |
893 DP_PADCTL_PD_TXD_2_NO |
894 DP_PADCTL_PD_TXD_3_NO;
895 break;
896 case 2:
897 pad_ctrl = DP_PADCTL_PD_TXD_0_NO |
898 DP_PADCTL_PD_TXD_1_NO |
899 DP_PADCTL_PD_TXD_2_YES |
900 DP_PADCTL_PD_TXD_3_YES;
901 break;
902 case 1:
903 pad_ctrl = DP_PADCTL_PD_TXD_0_NO |
904 DP_PADCTL_PD_TXD_1_YES |
905 DP_PADCTL_PD_TXD_2_YES |
906 DP_PADCTL_PD_TXD_3_YES;
907 break;
908 default:
909 printf("Invalid sor lane count: %u\n", link_cfg->lane_count);
910 return;
911 }
912
913 pad_ctrl |= DP_PADCTL_PAD_CAL_PD_POWERDOWN;
914 tegra_sor_writel(sor, DP_PADCTL(sor->portnum), pad_ctrl);
915
916 err = tegra_dc_sor_enable_lane_sequencer(sor, 0, 0);
917 if (err) {
918 debug("Wait for lane power down failed: %d\n", err);
919 return;
920 }
921 }
922
923 int tegra_sor_precharge_lanes(struct udevice *dev,
924 const struct tegra_dp_link_config *cfg)
925 {
926 struct tegra_dc_sor_data *sor = dev_get_priv(dev);
927 u32 val = 0;
928
929 switch (cfg->lane_count) {
930 case 4:
931 val |= (DP_PADCTL_PD_TXD_3_NO |
932 DP_PADCTL_PD_TXD_2_NO);
933 /* fall through */
934 case 2:
935 val |= DP_PADCTL_PD_TXD_1_NO;
936 /* fall through */
937 case 1:
938 val |= DP_PADCTL_PD_TXD_0_NO;
939 break;
940 default:
941 debug("dp: invalid lane number %d\n", cfg->lane_count);
942 return -EINVAL;
943 }
944
945 tegra_sor_write_field(sor, DP_PADCTL(sor->portnum),
946 (0xf << DP_PADCTL_COMODE_TXD_0_DP_TXD_2_SHIFT),
947 (val << DP_PADCTL_COMODE_TXD_0_DP_TXD_2_SHIFT));
948 udelay(100);
949 tegra_sor_write_field(sor, DP_PADCTL(sor->portnum),
950 (0xf << DP_PADCTL_COMODE_TXD_0_DP_TXD_2_SHIFT),
951 0);
952
953 return 0;
954 }
955
956 static void tegra_dc_sor_enable_sor(struct dc_ctlr *disp_ctrl, bool enable)
957 {
958 u32 reg_val = readl(&disp_ctrl->disp.disp_win_opt);
959
960 reg_val = enable ? reg_val | SOR_ENABLE : reg_val & ~SOR_ENABLE;
961 writel(reg_val, &disp_ctrl->disp.disp_win_opt);
962 }
963
964 int tegra_dc_sor_detach(struct udevice *dc_dev, struct udevice *dev)
965 {
966 struct tegra_dc_sor_data *sor = dev_get_priv(dev);
967 int dc_reg_ctx[DC_REG_SAVE_SPACE];
968 const void *blob = gd->fdt_blob;
969 struct dc_ctlr *disp_ctrl;
970 unsigned long dc_int_mask;
971 int node;
972 int ret;
973
974 debug("%s\n", __func__);
975 /* Use the first display controller */
976 node = dc_dev->of_offset;
977 disp_ctrl = (struct dc_ctlr *)fdtdec_get_addr(blob, node, "reg");
978
979 /* Sleep mode */
980 tegra_sor_writel(sor, SUPER_STATE1, SUPER_STATE1_ASY_HEAD_OP_SLEEP |
981 SUPER_STATE1_ASY_ORMODE_SAFE |
982 SUPER_STATE1_ATTACHED_YES);
983 tegra_dc_sor_super_update(sor);
984
985 tegra_dc_sor_disable_win_short_raster(disp_ctrl, dc_reg_ctx);
986
987 if (tegra_dc_sor_poll_register(sor, TEST,
988 TEST_ACT_HEAD_OPMODE_DEFAULT_MASK,
989 TEST_ACT_HEAD_OPMODE_SLEEP, 100,
990 TEGRA_SOR_ATTACH_TIMEOUT_MS)) {
991 debug("dc timeout waiting for OPMOD = SLEEP\n");
992 ret = -ETIMEDOUT;
993 goto err;
994 }
995
996 tegra_sor_writel(sor, SUPER_STATE1, SUPER_STATE1_ASY_HEAD_OP_SLEEP |
997 SUPER_STATE1_ASY_ORMODE_SAFE |
998 SUPER_STATE1_ATTACHED_NO);
999
1000 /* Mask DC interrupts during the 2 dummy frames required for detach */
1001 dc_int_mask = readl(&disp_ctrl->cmd.int_mask);
1002 writel(0, &disp_ctrl->cmd.int_mask);
1003
1004 /* Stop DC->SOR path */
1005 tegra_dc_sor_enable_sor(disp_ctrl, false);
1006 ret = tegra_dc_sor_general_act(disp_ctrl);
1007 if (ret)
1008 goto err;
1009
1010 /* Stop DC */
1011 writel(CTRL_MODE_STOP << CTRL_MODE_SHIFT, &disp_ctrl->cmd.disp_cmd);
1012 ret = tegra_dc_sor_general_act(disp_ctrl);
1013 if (ret)
1014 goto err;
1015
1016 tegra_dc_sor_restore_win_and_raster(disp_ctrl, dc_reg_ctx);
1017
1018 writel(dc_int_mask, &disp_ctrl->cmd.int_mask);
1019
1020 return 0;
1021 err:
1022 debug("%s: ret=%d\n", __func__, ret);
1023
1024 return ret;
1025 }
1026
1027 static int tegra_sor_set_backlight(struct udevice *dev, int percent)
1028 {
1029 struct tegra_dc_sor_data *priv = dev_get_priv(dev);
1030 int ret;
1031
1032 ret = panel_enable_backlight(priv->panel);
1033 if (ret) {
1034 debug("sor: Cannot enable panel backlight\n");
1035 return ret;
1036 }
1037
1038 return 0;
1039 }
1040
1041 static int tegra_sor_ofdata_to_platdata(struct udevice *dev)
1042 {
1043 struct tegra_dc_sor_data *priv = dev_get_priv(dev);
1044 const void *blob = gd->fdt_blob;
1045 int node;
1046 int ret;
1047
1048 priv->base = (void *)fdtdec_get_addr(blob, dev->of_offset, "reg");
1049
1050 node = fdtdec_next_compatible(blob, 0, COMPAT_NVIDIA_TEGRA124_PMC);
1051 if (node < 0) {
1052 debug("%s: Cannot find PMC\n", __func__);
1053 return -ENOENT;
1054 }
1055 priv->pmc_base = (void *)fdtdec_get_addr(blob, node, "reg");
1056
1057 ret = uclass_get_device_by_phandle(UCLASS_PANEL, dev, "nvidia,panel",
1058 &priv->panel);
1059 if (ret) {
1060 debug("%s: Cannot find panel for '%s' (ret=%d)\n", __func__,
1061 dev->name, ret);
1062 return ret;
1063 }
1064
1065 return 0;
1066 }
1067
1068 static const struct video_bridge_ops tegra_sor_ops = {
1069 .set_backlight = tegra_sor_set_backlight,
1070 };
1071
1072 static const struct udevice_id tegra_sor_ids[] = {
1073 { .compatible = "nvidia,tegra124-sor" },
1074 { }
1075 };
1076
1077 U_BOOT_DRIVER(sor_tegra) = {
1078 .name = "sor_tegra",
1079 .id = UCLASS_VIDEO_BRIDGE,
1080 .of_match = tegra_sor_ids,
1081 .ofdata_to_platdata = tegra_sor_ofdata_to_platdata,
1082 .ops = &tegra_sor_ops,
1083 .priv_auto_alloc_size = sizeof(struct tegra_dc_sor_data),
1084 };
"Das U-Boot" Source Tree