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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2012 Avionic Design GmbH
4 * Copyright (C) 2012 NVIDIA CORPORATION. All rights reserved.
5 */
6
7#include <linux/clk.h>
8#include <linux/debugfs.h>
9#include <linux/delay.h>
10#include <linux/iommu.h>
11#include <linux/module.h>
12#include <linux/of_device.h>
13#include <linux/pm_runtime.h>
14#include <linux/reset.h>
15
16#include <soc/tegra/pmc.h>
17
18#include <drm/drm_atomic.h>
19#include <drm/drm_atomic_helper.h>
20#include <drm/drm_debugfs.h>
21#include <drm/drm_fourcc.h>
22#include <drm/drm_plane_helper.h>
23#include <drm/drm_vblank.h>
24
25#include "dc.h"
26#include "drm.h"
27#include "gem.h"
28#include "hub.h"
29#include "plane.h"
30
31static void tegra_crtc_atomic_destroy_state(struct drm_crtc *crtc,
32 struct drm_crtc_state *state);
33
34static void tegra_dc_stats_reset(struct tegra_dc_stats *stats)
35{
36 stats->frames = 0;
37 stats->vblank = 0;
38 stats->underflow = 0;
39 stats->overflow = 0;
40}
41
42/* Reads the active copy of a register. */
43static u32 tegra_dc_readl_active(struct tegra_dc *dc, unsigned long offset)
44{
45 u32 value;
46
47 tegra_dc_writel(dc, READ_MUX, DC_CMD_STATE_ACCESS);
48 value = tegra_dc_readl(dc, offset);
49 tegra_dc_writel(dc, 0, DC_CMD_STATE_ACCESS);
50
51 return value;
52}
53
54static inline unsigned int tegra_plane_offset(struct tegra_plane *plane,
55 unsigned int offset)
56{
57 if (offset >= 0x500 && offset <= 0x638) {
58 offset = 0x000 + (offset - 0x500);
59 return plane->offset + offset;
60 }
61
62 if (offset >= 0x700 && offset <= 0x719) {
63 offset = 0x180 + (offset - 0x700);
64 return plane->offset + offset;
65 }
66
67 if (offset >= 0x800 && offset <= 0x839) {
68 offset = 0x1c0 + (offset - 0x800);
69 return plane->offset + offset;
70 }
71
72 dev_WARN(plane->dc->dev, "invalid offset: %x\n", offset);
73
74 return plane->offset + offset;
75}
76
77static inline u32 tegra_plane_readl(struct tegra_plane *plane,
78 unsigned int offset)
79{
80 return tegra_dc_readl(plane->dc, tegra_plane_offset(plane, offset));
81}
82
83static inline void tegra_plane_writel(struct tegra_plane *plane, u32 value,
84 unsigned int offset)
85{
86 tegra_dc_writel(plane->dc, value, tegra_plane_offset(plane, offset));
87}
88
89bool tegra_dc_has_output(struct tegra_dc *dc, struct device *dev)
90{
91 struct device_node *np = dc->dev->of_node;
92 struct of_phandle_iterator it;
93 int err;
94
95 of_for_each_phandle(&it, err, np, "nvidia,outputs", NULL, 0)
96 if (it.node == dev->of_node)
97 return true;
98
99 return false;
100}
101
102/*
103 * Double-buffered registers have two copies: ASSEMBLY and ACTIVE. When the
104 * *_ACT_REQ bits are set the ASSEMBLY copy is latched into the ACTIVE copy.
105 * Latching happens mmediately if the display controller is in STOP mode or
106 * on the next frame boundary otherwise.
107 *
108 * Triple-buffered registers have three copies: ASSEMBLY, ARM and ACTIVE. The
109 * ASSEMBLY copy is latched into the ARM copy immediately after *_UPDATE bits
110 * are written. When the *_ACT_REQ bits are written, the ARM copy is latched
111 * into the ACTIVE copy, either immediately if the display controller is in
112 * STOP mode, or at the next frame boundary otherwise.
113 */
114void tegra_dc_commit(struct tegra_dc *dc)
115{
116 tegra_dc_writel(dc, GENERAL_ACT_REQ << 8, DC_CMD_STATE_CONTROL);
117 tegra_dc_writel(dc, GENERAL_ACT_REQ, DC_CMD_STATE_CONTROL);
118}
119
120static inline u32 compute_dda_inc(unsigned int in, unsigned int out, bool v,
121 unsigned int bpp)
122{
123 fixed20_12 outf = dfixed_init(out);
124 fixed20_12 inf = dfixed_init(in);
125 u32 dda_inc;
126 int max;
127
128 if (v)
129 max = 15;
130 else {
131 switch (bpp) {
132 case 2:
133 max = 8;
134 break;
135
136 default:
137 WARN_ON_ONCE(1);
138 /* fallthrough */
139 case 4:
140 max = 4;
141 break;
142 }
143 }
144
145 outf.full = max_t(u32, outf.full - dfixed_const(1), dfixed_const(1));
146 inf.full -= dfixed_const(1);
147
148 dda_inc = dfixed_div(inf, outf);
149 dda_inc = min_t(u32, dda_inc, dfixed_const(max));
150
151 return dda_inc;
152}
153
154static inline u32 compute_initial_dda(unsigned int in)
155{
156 fixed20_12 inf = dfixed_init(in);
157 return dfixed_frac(inf);
158}
159
160static void tegra_plane_setup_blending_legacy(struct tegra_plane *plane)
161{
162 u32 background[3] = {
163 BLEND_WEIGHT1(0) | BLEND_WEIGHT0(0) | BLEND_COLOR_KEY_NONE,
164 BLEND_WEIGHT1(0) | BLEND_WEIGHT0(0) | BLEND_COLOR_KEY_NONE,
165 BLEND_WEIGHT1(0) | BLEND_WEIGHT0(0) | BLEND_COLOR_KEY_NONE,
166 };
167 u32 foreground = BLEND_WEIGHT1(255) | BLEND_WEIGHT0(255) |
168 BLEND_COLOR_KEY_NONE;
169 u32 blendnokey = BLEND_WEIGHT1(255) | BLEND_WEIGHT0(255);
170 struct tegra_plane_state *state;
171 u32 blending[2];
172 unsigned int i;
173
174 /* disable blending for non-overlapping case */
175 tegra_plane_writel(plane, blendnokey, DC_WIN_BLEND_NOKEY);
176 tegra_plane_writel(plane, foreground, DC_WIN_BLEND_1WIN);
177
178 state = to_tegra_plane_state(plane->base.state);
179
180 if (state->opaque) {
181 /*
182 * Since custom fix-weight blending isn't utilized and weight
183 * of top window is set to max, we can enforce dependent
184 * blending which in this case results in transparent bottom
185 * window if top window is opaque and if top window enables
186 * alpha blending, then bottom window is getting alpha value
187 * of 1 minus the sum of alpha components of the overlapping
188 * plane.
189 */
190 background[0] |= BLEND_CONTROL_DEPENDENT;
191 background[1] |= BLEND_CONTROL_DEPENDENT;
192
193 /*
194 * The region where three windows overlap is the intersection
195 * of the two regions where two windows overlap. It contributes
196 * to the area if all of the windows on top of it have an alpha
197 * component.
198 */
199 switch (state->base.normalized_zpos) {
200 case 0:
201 if (state->blending[0].alpha &&
202 state->blending[1].alpha)
203 background[2] |= BLEND_CONTROL_DEPENDENT;
204 break;
205
206 case 1:
207 background[2] |= BLEND_CONTROL_DEPENDENT;
208 break;
209 }
210 } else {
211 /*
212 * Enable alpha blending if pixel format has an alpha
213 * component.
214 */
215 foreground |= BLEND_CONTROL_ALPHA;
216
217 /*
218 * If any of the windows on top of this window is opaque, it
219 * will completely conceal this window within that area. If
220 * top window has an alpha component, it is blended over the
221 * bottom window.
222 */
223 for (i = 0; i < 2; i++) {
224 if (state->blending[i].alpha &&
225 state->blending[i].top)
226 background[i] |= BLEND_CONTROL_DEPENDENT;
227 }
228
229 switch (state->base.normalized_zpos) {
230 case 0:
231 if (state->blending[0].alpha &&
232 state->blending[1].alpha)
233 background[2] |= BLEND_CONTROL_DEPENDENT;
234 break;
235
236 case 1:
237 /*
238 * When both middle and topmost windows have an alpha,
239 * these windows a mixed together and then the result
240 * is blended over the bottom window.
241 */
242 if (state->blending[0].alpha &&
243 state->blending[0].top)
244 background[2] |= BLEND_CONTROL_ALPHA;
245
246 if (state->blending[1].alpha &&
247 state->blending[1].top)
248 background[2] |= BLEND_CONTROL_ALPHA;
249 break;
250 }
251 }
252
253 switch (state->base.normalized_zpos) {
254 case 0:
255 tegra_plane_writel(plane, background[0], DC_WIN_BLEND_2WIN_X);
256 tegra_plane_writel(plane, background[1], DC_WIN_BLEND_2WIN_Y);
257 tegra_plane_writel(plane, background[2], DC_WIN_BLEND_3WIN_XY);
258 break;
259
260 case 1:
261 /*
262 * If window B / C is topmost, then X / Y registers are
263 * matching the order of blending[...] state indices,
264 * otherwise a swap is required.
265 */
266 if (!state->blending[0].top && state->blending[1].top) {
267 blending[0] = foreground;
268 blending[1] = background[1];
269 } else {
270 blending[0] = background[0];
271 blending[1] = foreground;
272 }
273
274 tegra_plane_writel(plane, blending[0], DC_WIN_BLEND_2WIN_X);
275 tegra_plane_writel(plane, blending[1], DC_WIN_BLEND_2WIN_Y);
276 tegra_plane_writel(plane, background[2], DC_WIN_BLEND_3WIN_XY);
277 break;
278
279 case 2:
280 tegra_plane_writel(plane, foreground, DC_WIN_BLEND_2WIN_X);
281 tegra_plane_writel(plane, foreground, DC_WIN_BLEND_2WIN_Y);
282 tegra_plane_writel(plane, foreground, DC_WIN_BLEND_3WIN_XY);
283 break;
284 }
285}
286
287static void tegra_plane_setup_blending(struct tegra_plane *plane,
288 const struct tegra_dc_window *window)
289{
290 u32 value;
291
292 value = BLEND_FACTOR_DST_ALPHA_ZERO | BLEND_FACTOR_SRC_ALPHA_K2 |
293 BLEND_FACTOR_DST_COLOR_NEG_K1_TIMES_SRC |
294 BLEND_FACTOR_SRC_COLOR_K1_TIMES_SRC;
295 tegra_plane_writel(plane, value, DC_WIN_BLEND_MATCH_SELECT);
296
297 value = BLEND_FACTOR_DST_ALPHA_ZERO | BLEND_FACTOR_SRC_ALPHA_K2 |
298 BLEND_FACTOR_DST_COLOR_NEG_K1_TIMES_SRC |
299 BLEND_FACTOR_SRC_COLOR_K1_TIMES_SRC;
300 tegra_plane_writel(plane, value, DC_WIN_BLEND_NOMATCH_SELECT);
301
302 value = K2(255) | K1(255) | WINDOW_LAYER_DEPTH(255 - window->zpos);
303 tegra_plane_writel(plane, value, DC_WIN_BLEND_LAYER_CONTROL);
304}
305
306static bool
307tegra_plane_use_horizontal_filtering(struct tegra_plane *plane,
308 const struct tegra_dc_window *window)
309{
310 struct tegra_dc *dc = plane->dc;
311
312 if (window->src.w == window->dst.w)
313 return false;
314
315 if (plane->index == 0 && dc->soc->has_win_a_without_filters)
316 return false;
317
318 return true;
319}
320
321static bool
322tegra_plane_use_vertical_filtering(struct tegra_plane *plane,
323 const struct tegra_dc_window *window)
324{
325 struct tegra_dc *dc = plane->dc;
326
327 if (window->src.h == window->dst.h)
328 return false;
329
330 if (plane->index == 0 && dc->soc->has_win_a_without_filters)
331 return false;
332
333 if (plane->index == 2 && dc->soc->has_win_c_without_vert_filter)
334 return false;
335
336 return true;
337}
338
339static void tegra_dc_setup_window(struct tegra_plane *plane,
340 const struct tegra_dc_window *window)
341{
342 unsigned h_offset, v_offset, h_size, v_size, h_dda, v_dda, bpp;
343 struct tegra_dc *dc = plane->dc;
344 bool yuv, planar;
345 u32 value;
346
347 /*
348 * For YUV planar modes, the number of bytes per pixel takes into
349 * account only the luma component and therefore is 1.
350 */
351 yuv = tegra_plane_format_is_yuv(window->format, &planar);
352 if (!yuv)
353 bpp = window->bits_per_pixel / 8;
354 else
355 bpp = planar ? 1 : 2;
356
357 tegra_plane_writel(plane, window->format, DC_WIN_COLOR_DEPTH);
358 tegra_plane_writel(plane, window->swap, DC_WIN_BYTE_SWAP);
359
360 value = V_POSITION(window->dst.y) | H_POSITION(window->dst.x);
361 tegra_plane_writel(plane, value, DC_WIN_POSITION);
362
363 value = V_SIZE(window->dst.h) | H_SIZE(window->dst.w);
364 tegra_plane_writel(plane, value, DC_WIN_SIZE);
365
366 h_offset = window->src.x * bpp;
367 v_offset = window->src.y;
368 h_size = window->src.w * bpp;
369 v_size = window->src.h;
370
371 value = V_PRESCALED_SIZE(v_size) | H_PRESCALED_SIZE(h_size);
372 tegra_plane_writel(plane, value, DC_WIN_PRESCALED_SIZE);
373
374 /*
375 * For DDA computations the number of bytes per pixel for YUV planar
376 * modes needs to take into account all Y, U and V components.
377 */
378 if (yuv && planar)
379 bpp = 2;
380
381 h_dda = compute_dda_inc(window->src.w, window->dst.w, false, bpp);
382 v_dda = compute_dda_inc(window->src.h, window->dst.h, true, bpp);
383
384 value = V_DDA_INC(v_dda) | H_DDA_INC(h_dda);
385 tegra_plane_writel(plane, value, DC_WIN_DDA_INC);
386
387 h_dda = compute_initial_dda(window->src.x);
388 v_dda = compute_initial_dda(window->src.y);
389
390 tegra_plane_writel(plane, h_dda, DC_WIN_H_INITIAL_DDA);
391 tegra_plane_writel(plane, v_dda, DC_WIN_V_INITIAL_DDA);
392
393 tegra_plane_writel(plane, 0, DC_WIN_UV_BUF_STRIDE);
394 tegra_plane_writel(plane, 0, DC_WIN_BUF_STRIDE);
395
396 tegra_plane_writel(plane, window->base[0], DC_WINBUF_START_ADDR);
397
398 if (yuv && planar) {
399 tegra_plane_writel(plane, window->base[1], DC_WINBUF_START_ADDR_U);
400 tegra_plane_writel(plane, window->base[2], DC_WINBUF_START_ADDR_V);
401 value = window->stride[1] << 16 | window->stride[0];
402 tegra_plane_writel(plane, value, DC_WIN_LINE_STRIDE);
403 } else {
404 tegra_plane_writel(plane, window->stride[0], DC_WIN_LINE_STRIDE);
405 }
406
407 if (window->bottom_up)
408 v_offset += window->src.h - 1;
409
410 tegra_plane_writel(plane, h_offset, DC_WINBUF_ADDR_H_OFFSET);
411 tegra_plane_writel(plane, v_offset, DC_WINBUF_ADDR_V_OFFSET);
412
413 if (dc->soc->supports_block_linear) {
414 unsigned long height = window->tiling.value;
415
416 switch (window->tiling.mode) {
417 case TEGRA_BO_TILING_MODE_PITCH:
418 value = DC_WINBUF_SURFACE_KIND_PITCH;
419 break;
420
421 case TEGRA_BO_TILING_MODE_TILED:
422 value = DC_WINBUF_SURFACE_KIND_TILED;
423 break;
424
425 case TEGRA_BO_TILING_MODE_BLOCK:
426 value = DC_WINBUF_SURFACE_KIND_BLOCK_HEIGHT(height) |
427 DC_WINBUF_SURFACE_KIND_BLOCK;
428 break;
429 }
430
431 tegra_plane_writel(plane, value, DC_WINBUF_SURFACE_KIND);
432 } else {
433 switch (window->tiling.mode) {
434 case TEGRA_BO_TILING_MODE_PITCH:
435 value = DC_WIN_BUFFER_ADDR_MODE_LINEAR_UV |
436 DC_WIN_BUFFER_ADDR_MODE_LINEAR;
437 break;
438
439 case TEGRA_BO_TILING_MODE_TILED:
440 value = DC_WIN_BUFFER_ADDR_MODE_TILE_UV |
441 DC_WIN_BUFFER_ADDR_MODE_TILE;
442 break;
443
444 case TEGRA_BO_TILING_MODE_BLOCK:
445 /*
446 * No need to handle this here because ->atomic_check
447 * will already have filtered it out.
448 */
449 break;
450 }
451
452 tegra_plane_writel(plane, value, DC_WIN_BUFFER_ADDR_MODE);
453 }
454
455 value = WIN_ENABLE;
456
457 if (yuv) {
458 /* setup default colorspace conversion coefficients */
459 tegra_plane_writel(plane, 0x00f0, DC_WIN_CSC_YOF);
460 tegra_plane_writel(plane, 0x012a, DC_WIN_CSC_KYRGB);
461 tegra_plane_writel(plane, 0x0000, DC_WIN_CSC_KUR);
462 tegra_plane_writel(plane, 0x0198, DC_WIN_CSC_KVR);
463 tegra_plane_writel(plane, 0x039b, DC_WIN_CSC_KUG);
464 tegra_plane_writel(plane, 0x032f, DC_WIN_CSC_KVG);
465 tegra_plane_writel(plane, 0x0204, DC_WIN_CSC_KUB);
466 tegra_plane_writel(plane, 0x0000, DC_WIN_CSC_KVB);
467
468 value |= CSC_ENABLE;
469 } else if (window->bits_per_pixel < 24) {
470 value |= COLOR_EXPAND;
471 }
472
473 if (window->bottom_up)
474 value |= V_DIRECTION;
475
476 if (tegra_plane_use_horizontal_filtering(plane, window)) {
477 /*
478 * Enable horizontal 6-tap filter and set filtering
479 * coefficients to the default values defined in TRM.
480 */
481 tegra_plane_writel(plane, 0x00008000, DC_WIN_H_FILTER_P(0));
482 tegra_plane_writel(plane, 0x3e087ce1, DC_WIN_H_FILTER_P(1));
483 tegra_plane_writel(plane, 0x3b117ac1, DC_WIN_H_FILTER_P(2));
484 tegra_plane_writel(plane, 0x591b73aa, DC_WIN_H_FILTER_P(3));
485 tegra_plane_writel(plane, 0x57256d9a, DC_WIN_H_FILTER_P(4));
486 tegra_plane_writel(plane, 0x552f668b, DC_WIN_H_FILTER_P(5));
487 tegra_plane_writel(plane, 0x73385e8b, DC_WIN_H_FILTER_P(6));
488 tegra_plane_writel(plane, 0x72435583, DC_WIN_H_FILTER_P(7));
489 tegra_plane_writel(plane, 0x714c4c8b, DC_WIN_H_FILTER_P(8));
490 tegra_plane_writel(plane, 0x70554393, DC_WIN_H_FILTER_P(9));
491 tegra_plane_writel(plane, 0x715e389b, DC_WIN_H_FILTER_P(10));
492 tegra_plane_writel(plane, 0x71662faa, DC_WIN_H_FILTER_P(11));
493 tegra_plane_writel(plane, 0x536d25ba, DC_WIN_H_FILTER_P(12));
494 tegra_plane_writel(plane, 0x55731bca, DC_WIN_H_FILTER_P(13));
495 tegra_plane_writel(plane, 0x387a11d9, DC_WIN_H_FILTER_P(14));
496 tegra_plane_writel(plane, 0x3c7c08f1, DC_WIN_H_FILTER_P(15));
497
498 value |= H_FILTER;
499 }
500
501 if (tegra_plane_use_vertical_filtering(plane, window)) {
502 unsigned int i, k;
503
504 /*
505 * Enable vertical 2-tap filter and set filtering
506 * coefficients to the default values defined in TRM.
507 */
508 for (i = 0, k = 128; i < 16; i++, k -= 8)
509 tegra_plane_writel(plane, k, DC_WIN_V_FILTER_P(i));
510
511 value |= V_FILTER;
512 }
513
514 tegra_plane_writel(plane, value, DC_WIN_WIN_OPTIONS);
515
516 if (dc->soc->has_legacy_blending)
517 tegra_plane_setup_blending_legacy(plane);
518 else
519 tegra_plane_setup_blending(plane, window);
520}
521
522static const u32 tegra20_primary_formats[] = {
523 DRM_FORMAT_ARGB4444,
524 DRM_FORMAT_ARGB1555,
525 DRM_FORMAT_RGB565,
526 DRM_FORMAT_RGBA5551,
527 DRM_FORMAT_ABGR8888,
528 DRM_FORMAT_ARGB8888,
529 /* non-native formats */
530 DRM_FORMAT_XRGB1555,
531 DRM_FORMAT_RGBX5551,
532 DRM_FORMAT_XBGR8888,
533 DRM_FORMAT_XRGB8888,
534};
535
536static const u64 tegra20_modifiers[] = {
537 DRM_FORMAT_MOD_LINEAR,
538 DRM_FORMAT_MOD_NVIDIA_TEGRA_TILED,
539 DRM_FORMAT_MOD_INVALID
540};
541
542static const u32 tegra114_primary_formats[] = {
543 DRM_FORMAT_ARGB4444,
544 DRM_FORMAT_ARGB1555,
545 DRM_FORMAT_RGB565,
546 DRM_FORMAT_RGBA5551,
547 DRM_FORMAT_ABGR8888,
548 DRM_FORMAT_ARGB8888,
549 /* new on Tegra114 */
550 DRM_FORMAT_ABGR4444,
551 DRM_FORMAT_ABGR1555,
552 DRM_FORMAT_BGRA5551,
553 DRM_FORMAT_XRGB1555,
554 DRM_FORMAT_RGBX5551,
555 DRM_FORMAT_XBGR1555,
556 DRM_FORMAT_BGRX5551,
557 DRM_FORMAT_BGR565,
558 DRM_FORMAT_BGRA8888,
559 DRM_FORMAT_RGBA8888,
560 DRM_FORMAT_XRGB8888,
561 DRM_FORMAT_XBGR8888,
562};
563
564static const u32 tegra124_primary_formats[] = {
565 DRM_FORMAT_ARGB4444,
566 DRM_FORMAT_ARGB1555,
567 DRM_FORMAT_RGB565,
568 DRM_FORMAT_RGBA5551,
569 DRM_FORMAT_ABGR8888,
570 DRM_FORMAT_ARGB8888,
571 /* new on Tegra114 */
572 DRM_FORMAT_ABGR4444,
573 DRM_FORMAT_ABGR1555,
574 DRM_FORMAT_BGRA5551,
575 DRM_FORMAT_XRGB1555,
576 DRM_FORMAT_RGBX5551,
577 DRM_FORMAT_XBGR1555,
578 DRM_FORMAT_BGRX5551,
579 DRM_FORMAT_BGR565,
580 DRM_FORMAT_BGRA8888,
581 DRM_FORMAT_RGBA8888,
582 DRM_FORMAT_XRGB8888,
583 DRM_FORMAT_XBGR8888,
584 /* new on Tegra124 */
585 DRM_FORMAT_RGBX8888,
586 DRM_FORMAT_BGRX8888,
587};
588
589static const u64 tegra124_modifiers[] = {
590 DRM_FORMAT_MOD_LINEAR,
591 DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(0),
592 DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(1),
593 DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(2),
594 DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(3),
595 DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(4),
596 DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(5),
597 DRM_FORMAT_MOD_INVALID
598};
599
600static int tegra_plane_atomic_check(struct drm_plane *plane,
601 struct drm_plane_state *state)
602{
603 struct tegra_plane_state *plane_state = to_tegra_plane_state(state);
604 unsigned int rotation = DRM_MODE_ROTATE_0 | DRM_MODE_REFLECT_Y;
605 struct tegra_bo_tiling *tiling = &plane_state->tiling;
606 struct tegra_plane *tegra = to_tegra_plane(plane);
607 struct tegra_dc *dc = to_tegra_dc(state->crtc);
608 int err;
609
610 /* no need for further checks if the plane is being disabled */
611 if (!state->crtc)
612 return 0;
613
614 err = tegra_plane_format(state->fb->format->format,
615 &plane_state->format,
616 &plane_state->swap);
617 if (err < 0)
618 return err;
619
620 /*
621 * Tegra20 and Tegra30 are special cases here because they support
622 * only variants of specific formats with an alpha component, but not
623 * the corresponding opaque formats. However, the opaque formats can
624 * be emulated by disabling alpha blending for the plane.
625 */
626 if (dc->soc->has_legacy_blending) {
627 err = tegra_plane_setup_legacy_state(tegra, plane_state);
628 if (err < 0)
629 return err;
630 }
631
632 err = tegra_fb_get_tiling(state->fb, tiling);
633 if (err < 0)
634 return err;
635
636 if (tiling->mode == TEGRA_BO_TILING_MODE_BLOCK &&
637 !dc->soc->supports_block_linear) {
638 DRM_ERROR("hardware doesn't support block linear mode\n");
639 return -EINVAL;
640 }
641
642 rotation = drm_rotation_simplify(state->rotation, rotation);
643
644 if (rotation & DRM_MODE_REFLECT_Y)
645 plane_state->bottom_up = true;
646 else
647 plane_state->bottom_up = false;
648
649 /*
650 * Tegra doesn't support different strides for U and V planes so we
651 * error out if the user tries to display a framebuffer with such a
652 * configuration.
653 */
654 if (state->fb->format->num_planes > 2) {
655 if (state->fb->pitches[2] != state->fb->pitches[1]) {
656 DRM_ERROR("unsupported UV-plane configuration\n");
657 return -EINVAL;
658 }
659 }
660
661 err = tegra_plane_state_add(tegra, state);
662 if (err < 0)
663 return err;
664
665 return 0;
666}
667
668static void tegra_plane_atomic_disable(struct drm_plane *plane,
669 struct drm_plane_state *old_state)
670{
671 struct tegra_plane *p = to_tegra_plane(plane);
672 u32 value;
673
674 /* rien ne va plus */
675 if (!old_state || !old_state->crtc)
676 return;
677
678 value = tegra_plane_readl(p, DC_WIN_WIN_OPTIONS);
679 value &= ~WIN_ENABLE;
680 tegra_plane_writel(p, value, DC_WIN_WIN_OPTIONS);
681}
682
683static void tegra_plane_atomic_update(struct drm_plane *plane,
684 struct drm_plane_state *old_state)
685{
686 struct tegra_plane_state *state = to_tegra_plane_state(plane->state);
687 struct drm_framebuffer *fb = plane->state->fb;
688 struct tegra_plane *p = to_tegra_plane(plane);
689 struct tegra_dc_window window;
690 unsigned int i;
691
692 /* rien ne va plus */
693 if (!plane->state->crtc || !plane->state->fb)
694 return;
695
696 if (!plane->state->visible)
697 return tegra_plane_atomic_disable(plane, old_state);
698
699 memset(&window, 0, sizeof(window));
700 window.src.x = plane->state->src.x1 >> 16;
701 window.src.y = plane->state->src.y1 >> 16;
702 window.src.w = drm_rect_width(&plane->state->src) >> 16;
703 window.src.h = drm_rect_height(&plane->state->src) >> 16;
704 window.dst.x = plane->state->dst.x1;
705 window.dst.y = plane->state->dst.y1;
706 window.dst.w = drm_rect_width(&plane->state->dst);
707 window.dst.h = drm_rect_height(&plane->state->dst);
708 window.bits_per_pixel = fb->format->cpp[0] * 8;
709 window.bottom_up = tegra_fb_is_bottom_up(fb) || state->bottom_up;
710
711 /* copy from state */
712 window.zpos = plane->state->normalized_zpos;
713 window.tiling = state->tiling;
714 window.format = state->format;
715 window.swap = state->swap;
716
717 for (i = 0; i < fb->format->num_planes; i++) {
718 struct tegra_bo *bo = tegra_fb_get_plane(fb, i);
719
720 window.base[i] = bo->paddr + fb->offsets[i];
721
722 /*
723 * Tegra uses a shared stride for UV planes. Framebuffers are
724 * already checked for this in the tegra_plane_atomic_check()
725 * function, so it's safe to ignore the V-plane pitch here.
726 */
727 if (i < 2)
728 window.stride[i] = fb->pitches[i];
729 }
730
731 tegra_dc_setup_window(p, &window);
732}
733
734static const struct drm_plane_helper_funcs tegra_plane_helper_funcs = {
735 .atomic_check = tegra_plane_atomic_check,
736 .atomic_disable = tegra_plane_atomic_disable,
737 .atomic_update = tegra_plane_atomic_update,
738};
739
740static unsigned long tegra_plane_get_possible_crtcs(struct drm_device *drm)
741{
742 /*
743 * Ideally this would use drm_crtc_mask(), but that would require the
744 * CRTC to already be in the mode_config's list of CRTCs. However, it
745 * will only be added to that list in the drm_crtc_init_with_planes()
746 * (in tegra_dc_init()), which in turn requires registration of these
747 * planes. So we have ourselves a nice little chicken and egg problem
748 * here.
749 *
750 * We work around this by manually creating the mask from the number
751 * of CRTCs that have been registered, and should therefore always be
752 * the same as drm_crtc_index() after registration.
753 */
754 return 1 << drm->mode_config.num_crtc;
755}
756
757static struct drm_plane *tegra_primary_plane_create(struct drm_device *drm,
758 struct tegra_dc *dc)
759{
760 unsigned long possible_crtcs = tegra_plane_get_possible_crtcs(drm);
761 enum drm_plane_type type = DRM_PLANE_TYPE_PRIMARY;
762 struct tegra_plane *plane;
763 unsigned int num_formats;
764 const u64 *modifiers;
765 const u32 *formats;
766 int err;
767
768 plane = kzalloc(sizeof(*plane), GFP_KERNEL);
769 if (!plane)
770 return ERR_PTR(-ENOMEM);
771
772 /* Always use window A as primary window */
773 plane->offset = 0xa00;
774 plane->index = 0;
775 plane->dc = dc;
776
777 num_formats = dc->soc->num_primary_formats;
778 formats = dc->soc->primary_formats;
779 modifiers = dc->soc->modifiers;
780
781 err = drm_universal_plane_init(drm, &plane->base, possible_crtcs,
782 &tegra_plane_funcs, formats,
783 num_formats, modifiers, type, NULL);
784 if (err < 0) {
785 kfree(plane);
786 return ERR_PTR(err);
787 }
788
789 drm_plane_helper_add(&plane->base, &tegra_plane_helper_funcs);
790 drm_plane_create_zpos_property(&plane->base, plane->index, 0, 255);
791
792 err = drm_plane_create_rotation_property(&plane->base,
793 DRM_MODE_ROTATE_0,
794 DRM_MODE_ROTATE_0 |
795 DRM_MODE_REFLECT_Y);
796 if (err < 0)
797 dev_err(dc->dev, "failed to create rotation property: %d\n",
798 err);
799
800 return &plane->base;
801}
802
803static const u32 tegra_cursor_plane_formats[] = {
804 DRM_FORMAT_RGBA8888,
805};
806
807static int tegra_cursor_atomic_check(struct drm_plane *plane,
808 struct drm_plane_state *state)
809{
810 struct tegra_plane *tegra = to_tegra_plane(plane);
811 int err;
812
813 /* no need for further checks if the plane is being disabled */
814 if (!state->crtc)
815 return 0;
816
817 /* scaling not supported for cursor */
818 if ((state->src_w >> 16 != state->crtc_w) ||
819 (state->src_h >> 16 != state->crtc_h))
820 return -EINVAL;
821
822 /* only square cursors supported */
823 if (state->src_w != state->src_h)
824 return -EINVAL;
825
826 if (state->crtc_w != 32 && state->crtc_w != 64 &&
827 state->crtc_w != 128 && state->crtc_w != 256)
828 return -EINVAL;
829
830 err = tegra_plane_state_add(tegra, state);
831 if (err < 0)
832 return err;
833
834 return 0;
835}
836
837static void tegra_cursor_atomic_update(struct drm_plane *plane,
838 struct drm_plane_state *old_state)
839{
840 struct tegra_bo *bo = tegra_fb_get_plane(plane->state->fb, 0);
841 struct tegra_dc *dc = to_tegra_dc(plane->state->crtc);
842 struct drm_plane_state *state = plane->state;
843 u32 value = CURSOR_CLIP_DISPLAY;
844
845 /* rien ne va plus */
846 if (!plane->state->crtc || !plane->state->fb)
847 return;
848
849 switch (state->crtc_w) {
850 case 32:
851 value |= CURSOR_SIZE_32x32;
852 break;
853
854 case 64:
855 value |= CURSOR_SIZE_64x64;
856 break;
857
858 case 128:
859 value |= CURSOR_SIZE_128x128;
860 break;
861
862 case 256:
863 value |= CURSOR_SIZE_256x256;
864 break;
865
866 default:
867 WARN(1, "cursor size %ux%u not supported\n", state->crtc_w,
868 state->crtc_h);
869 return;
870 }
871
872 value |= (bo->paddr >> 10) & 0x3fffff;
873 tegra_dc_writel(dc, value, DC_DISP_CURSOR_START_ADDR);
874
875#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
876 value = (bo->paddr >> 32) & 0x3;
877 tegra_dc_writel(dc, value, DC_DISP_CURSOR_START_ADDR_HI);
878#endif
879
880 /* enable cursor and set blend mode */
881 value = tegra_dc_readl(dc, DC_DISP_DISP_WIN_OPTIONS);
882 value |= CURSOR_ENABLE;
883 tegra_dc_writel(dc, value, DC_DISP_DISP_WIN_OPTIONS);
884
885 value = tegra_dc_readl(dc, DC_DISP_BLEND_CURSOR_CONTROL);
886 value &= ~CURSOR_DST_BLEND_MASK;
887 value &= ~CURSOR_SRC_BLEND_MASK;
888 value |= CURSOR_MODE_NORMAL;
889 value |= CURSOR_DST_BLEND_NEG_K1_TIMES_SRC;
890 value |= CURSOR_SRC_BLEND_K1_TIMES_SRC;
891 value |= CURSOR_ALPHA;
892 tegra_dc_writel(dc, value, DC_DISP_BLEND_CURSOR_CONTROL);
893
894 /* position the cursor */
895 value = (state->crtc_y & 0x3fff) << 16 | (state->crtc_x & 0x3fff);
896 tegra_dc_writel(dc, value, DC_DISP_CURSOR_POSITION);
897}
898
899static void tegra_cursor_atomic_disable(struct drm_plane *plane,
900 struct drm_plane_state *old_state)
901{
902 struct tegra_dc *dc;
903 u32 value;
904
905 /* rien ne va plus */
906 if (!old_state || !old_state->crtc)
907 return;
908
909 dc = to_tegra_dc(old_state->crtc);
910
911 value = tegra_dc_readl(dc, DC_DISP_DISP_WIN_OPTIONS);
912 value &= ~CURSOR_ENABLE;
913 tegra_dc_writel(dc, value, DC_DISP_DISP_WIN_OPTIONS);
914}
915
916static const struct drm_plane_helper_funcs tegra_cursor_plane_helper_funcs = {
917 .atomic_check = tegra_cursor_atomic_check,
918 .atomic_update = tegra_cursor_atomic_update,
919 .atomic_disable = tegra_cursor_atomic_disable,
920};
921
922static struct drm_plane *tegra_dc_cursor_plane_create(struct drm_device *drm,
923 struct tegra_dc *dc)
924{
925 unsigned long possible_crtcs = tegra_plane_get_possible_crtcs(drm);
926 struct tegra_plane *plane;
927 unsigned int num_formats;
928 const u32 *formats;
929 int err;
930
931 plane = kzalloc(sizeof(*plane), GFP_KERNEL);
932 if (!plane)
933 return ERR_PTR(-ENOMEM);
934
935 /*
936 * This index is kind of fake. The cursor isn't a regular plane, but
937 * its update and activation request bits in DC_CMD_STATE_CONTROL do
938 * use the same programming. Setting this fake index here allows the
939 * code in tegra_add_plane_state() to do the right thing without the
940 * need to special-casing the cursor plane.
941 */
942 plane->index = 6;
943 plane->dc = dc;
944
945 num_formats = ARRAY_SIZE(tegra_cursor_plane_formats);
946 formats = tegra_cursor_plane_formats;
947
948 err = drm_universal_plane_init(drm, &plane->base, possible_crtcs,
949 &tegra_plane_funcs, formats,
950 num_formats, NULL,
951 DRM_PLANE_TYPE_CURSOR, NULL);
952 if (err < 0) {
953 kfree(plane);
954 return ERR_PTR(err);
955 }
956
957 drm_plane_helper_add(&plane->base, &tegra_cursor_plane_helper_funcs);
958
959 return &plane->base;
960}
961
962static const u32 tegra20_overlay_formats[] = {
963 DRM_FORMAT_ARGB4444,
964 DRM_FORMAT_ARGB1555,
965 DRM_FORMAT_RGB565,
966 DRM_FORMAT_RGBA5551,
967 DRM_FORMAT_ABGR8888,
968 DRM_FORMAT_ARGB8888,
969 /* non-native formats */
970 DRM_FORMAT_XRGB1555,
971 DRM_FORMAT_RGBX5551,
972 DRM_FORMAT_XBGR8888,
973 DRM_FORMAT_XRGB8888,
974 /* planar formats */
975 DRM_FORMAT_UYVY,
976 DRM_FORMAT_YUYV,
977 DRM_FORMAT_YUV420,
978 DRM_FORMAT_YUV422,
979};
980
981static const u32 tegra114_overlay_formats[] = {
982 DRM_FORMAT_ARGB4444,
983 DRM_FORMAT_ARGB1555,
984 DRM_FORMAT_RGB565,
985 DRM_FORMAT_RGBA5551,
986 DRM_FORMAT_ABGR8888,
987 DRM_FORMAT_ARGB8888,
988 /* new on Tegra114 */
989 DRM_FORMAT_ABGR4444,
990 DRM_FORMAT_ABGR1555,
991 DRM_FORMAT_BGRA5551,
992 DRM_FORMAT_XRGB1555,
993 DRM_FORMAT_RGBX5551,
994 DRM_FORMAT_XBGR1555,
995 DRM_FORMAT_BGRX5551,
996 DRM_FORMAT_BGR565,
997 DRM_FORMAT_BGRA8888,
998 DRM_FORMAT_RGBA8888,
999 DRM_FORMAT_XRGB8888,
1000 DRM_FORMAT_XBGR8888,
1001 /* planar formats */
1002 DRM_FORMAT_UYVY,
1003 DRM_FORMAT_YUYV,
1004 DRM_FORMAT_YUV420,
1005 DRM_FORMAT_YUV422,
1006};
1007
1008static const u32 tegra124_overlay_formats[] = {
1009 DRM_FORMAT_ARGB4444,
1010 DRM_FORMAT_ARGB1555,
1011 DRM_FORMAT_RGB565,
1012 DRM_FORMAT_RGBA5551,
1013 DRM_FORMAT_ABGR8888,
1014 DRM_FORMAT_ARGB8888,
1015 /* new on Tegra114 */
1016 DRM_FORMAT_ABGR4444,
1017 DRM_FORMAT_ABGR1555,
1018 DRM_FORMAT_BGRA5551,
1019 DRM_FORMAT_XRGB1555,
1020 DRM_FORMAT_RGBX5551,
1021 DRM_FORMAT_XBGR1555,
1022 DRM_FORMAT_BGRX5551,
1023 DRM_FORMAT_BGR565,
1024 DRM_FORMAT_BGRA8888,
1025 DRM_FORMAT_RGBA8888,
1026 DRM_FORMAT_XRGB8888,
1027 DRM_FORMAT_XBGR8888,
1028 /* new on Tegra124 */
1029 DRM_FORMAT_RGBX8888,
1030 DRM_FORMAT_BGRX8888,
1031 /* planar formats */
1032 DRM_FORMAT_UYVY,
1033 DRM_FORMAT_YUYV,
1034 DRM_FORMAT_YUV420,
1035 DRM_FORMAT_YUV422,
1036};
1037
1038static struct drm_plane *tegra_dc_overlay_plane_create(struct drm_device *drm,
1039 struct tegra_dc *dc,
1040 unsigned int index,
1041 bool cursor)
1042{
1043 unsigned long possible_crtcs = tegra_plane_get_possible_crtcs(drm);
1044 struct tegra_plane *plane;
1045 unsigned int num_formats;
1046 enum drm_plane_type type;
1047 const u32 *formats;
1048 int err;
1049
1050 plane = kzalloc(sizeof(*plane), GFP_KERNEL);
1051 if (!plane)
1052 return ERR_PTR(-ENOMEM);
1053
1054 plane->offset = 0xa00 + 0x200 * index;
1055 plane->index = index;
1056 plane->dc = dc;
1057
1058 num_formats = dc->soc->num_overlay_formats;
1059 formats = dc->soc->overlay_formats;
1060
1061 if (!cursor)
1062 type = DRM_PLANE_TYPE_OVERLAY;
1063 else
1064 type = DRM_PLANE_TYPE_CURSOR;
1065
1066 err = drm_universal_plane_init(drm, &plane->base, possible_crtcs,
1067 &tegra_plane_funcs, formats,
1068 num_formats, NULL, type, NULL);
1069 if (err < 0) {
1070 kfree(plane);
1071 return ERR_PTR(err);
1072 }
1073
1074 drm_plane_helper_add(&plane->base, &tegra_plane_helper_funcs);
1075 drm_plane_create_zpos_property(&plane->base, plane->index, 0, 255);
1076
1077 err = drm_plane_create_rotation_property(&plane->base,
1078 DRM_MODE_ROTATE_0,
1079 DRM_MODE_ROTATE_0 |
1080 DRM_MODE_REFLECT_Y);
1081 if (err < 0)
1082 dev_err(dc->dev, "failed to create rotation property: %d\n",
1083 err);
1084
1085 return &plane->base;
1086}
1087
1088static struct drm_plane *tegra_dc_add_shared_planes(struct drm_device *drm,
1089 struct tegra_dc *dc)
1090{
1091 struct drm_plane *plane, *primary = NULL;
1092 unsigned int i, j;
1093
1094 for (i = 0; i < dc->soc->num_wgrps; i++) {
1095 const struct tegra_windowgroup_soc *wgrp = &dc->soc->wgrps[i];
1096
1097 if (wgrp->dc == dc->pipe) {
1098 for (j = 0; j < wgrp->num_windows; j++) {
1099 unsigned int index = wgrp->windows[j];
1100
1101 plane = tegra_shared_plane_create(drm, dc,
1102 wgrp->index,
1103 index);
1104 if (IS_ERR(plane))
1105 return plane;
1106
1107 /*
1108 * Choose the first shared plane owned by this
1109 * head as the primary plane.
1110 */
1111 if (!primary) {
1112 plane->type = DRM_PLANE_TYPE_PRIMARY;
1113 primary = plane;
1114 }
1115 }
1116 }
1117 }
1118
1119 return primary;
1120}
1121
1122static struct drm_plane *tegra_dc_add_planes(struct drm_device *drm,
1123 struct tegra_dc *dc)
1124{
1125 struct drm_plane *planes[2], *primary;
1126 unsigned int planes_num;
1127 unsigned int i;
1128 int err;
1129
1130 primary = tegra_primary_plane_create(drm, dc);
1131 if (IS_ERR(primary))
1132 return primary;
1133
1134 if (dc->soc->supports_cursor)
1135 planes_num = 2;
1136 else
1137 planes_num = 1;
1138
1139 for (i = 0; i < planes_num; i++) {
1140 planes[i] = tegra_dc_overlay_plane_create(drm, dc, 1 + i,
1141 false);
1142 if (IS_ERR(planes[i])) {
1143 err = PTR_ERR(planes[i]);
1144
1145 while (i--)
1146 tegra_plane_funcs.destroy(planes[i]);
1147
1148 tegra_plane_funcs.destroy(primary);
1149 return ERR_PTR(err);
1150 }
1151 }
1152
1153 return primary;
1154}
1155
1156static void tegra_dc_destroy(struct drm_crtc *crtc)
1157{
1158 drm_crtc_cleanup(crtc);
1159}
1160
1161static void tegra_crtc_reset(struct drm_crtc *crtc)
1162{
1163 struct tegra_dc_state *state = kzalloc(sizeof(*state), GFP_KERNEL);
1164
1165 if (crtc->state)
1166 tegra_crtc_atomic_destroy_state(crtc, crtc->state);
1167
1168 __drm_atomic_helper_crtc_reset(crtc, &state->base);
1169 drm_crtc_vblank_reset(crtc);
1170}
1171
1172static struct drm_crtc_state *
1173tegra_crtc_atomic_duplicate_state(struct drm_crtc *crtc)
1174{
1175 struct tegra_dc_state *state = to_dc_state(crtc->state);
1176 struct tegra_dc_state *copy;
1177
1178 copy = kmalloc(sizeof(*copy), GFP_KERNEL);
1179 if (!copy)
1180 return NULL;
1181
1182 __drm_atomic_helper_crtc_duplicate_state(crtc, ©->base);
1183 copy->clk = state->clk;
1184 copy->pclk = state->pclk;
1185 copy->div = state->div;
1186 copy->planes = state->planes;
1187
1188 return ©->base;
1189}
1190
1191static void tegra_crtc_atomic_destroy_state(struct drm_crtc *crtc,
1192 struct drm_crtc_state *state)
1193{
1194 __drm_atomic_helper_crtc_destroy_state(state);
1195 kfree(state);
1196}
1197
1198#define DEBUGFS_REG32(_name) { .name = #_name, .offset = _name }
1199
1200static const struct debugfs_reg32 tegra_dc_regs[] = {
1201 DEBUGFS_REG32(DC_CMD_GENERAL_INCR_SYNCPT),
1202 DEBUGFS_REG32(DC_CMD_GENERAL_INCR_SYNCPT_CNTRL),
1203 DEBUGFS_REG32(DC_CMD_GENERAL_INCR_SYNCPT_ERROR),
1204 DEBUGFS_REG32(DC_CMD_WIN_A_INCR_SYNCPT),
1205 DEBUGFS_REG32(DC_CMD_WIN_A_INCR_SYNCPT_CNTRL),
1206 DEBUGFS_REG32(DC_CMD_WIN_A_INCR_SYNCPT_ERROR),
1207 DEBUGFS_REG32(DC_CMD_WIN_B_INCR_SYNCPT),
1208 DEBUGFS_REG32(DC_CMD_WIN_B_INCR_SYNCPT_CNTRL),
1209 DEBUGFS_REG32(DC_CMD_WIN_B_INCR_SYNCPT_ERROR),
1210 DEBUGFS_REG32(DC_CMD_WIN_C_INCR_SYNCPT),
1211 DEBUGFS_REG32(DC_CMD_WIN_C_INCR_SYNCPT_CNTRL),
1212 DEBUGFS_REG32(DC_CMD_WIN_C_INCR_SYNCPT_ERROR),
1213 DEBUGFS_REG32(DC_CMD_CONT_SYNCPT_VSYNC),
1214 DEBUGFS_REG32(DC_CMD_DISPLAY_COMMAND_OPTION0),
1215 DEBUGFS_REG32(DC_CMD_DISPLAY_COMMAND),
1216 DEBUGFS_REG32(DC_CMD_SIGNAL_RAISE),
1217 DEBUGFS_REG32(DC_CMD_DISPLAY_POWER_CONTROL),
1218 DEBUGFS_REG32(DC_CMD_INT_STATUS),
1219 DEBUGFS_REG32(DC_CMD_INT_MASK),
1220 DEBUGFS_REG32(DC_CMD_INT_ENABLE),
1221 DEBUGFS_REG32(DC_CMD_INT_TYPE),
1222 DEBUGFS_REG32(DC_CMD_INT_POLARITY),
1223 DEBUGFS_REG32(DC_CMD_SIGNAL_RAISE1),
1224 DEBUGFS_REG32(DC_CMD_SIGNAL_RAISE2),
1225 DEBUGFS_REG32(DC_CMD_SIGNAL_RAISE3),
1226 DEBUGFS_REG32(DC_CMD_STATE_ACCESS),
1227 DEBUGFS_REG32(DC_CMD_STATE_CONTROL),
1228 DEBUGFS_REG32(DC_CMD_DISPLAY_WINDOW_HEADER),
1229 DEBUGFS_REG32(DC_CMD_REG_ACT_CONTROL),
1230 DEBUGFS_REG32(DC_COM_CRC_CONTROL),
1231 DEBUGFS_REG32(DC_COM_CRC_CHECKSUM),
1232 DEBUGFS_REG32(DC_COM_PIN_OUTPUT_ENABLE(0)),
1233 DEBUGFS_REG32(DC_COM_PIN_OUTPUT_ENABLE(1)),
1234 DEBUGFS_REG32(DC_COM_PIN_OUTPUT_ENABLE(2)),
1235 DEBUGFS_REG32(DC_COM_PIN_OUTPUT_ENABLE(3)),
1236 DEBUGFS_REG32(DC_COM_PIN_OUTPUT_POLARITY(0)),
1237 DEBUGFS_REG32(DC_COM_PIN_OUTPUT_POLARITY(1)),
1238 DEBUGFS_REG32(DC_COM_PIN_OUTPUT_POLARITY(2)),
1239 DEBUGFS_REG32(DC_COM_PIN_OUTPUT_POLARITY(3)),
1240 DEBUGFS_REG32(DC_COM_PIN_OUTPUT_DATA(0)),
1241 DEBUGFS_REG32(DC_COM_PIN_OUTPUT_DATA(1)),
1242 DEBUGFS_REG32(DC_COM_PIN_OUTPUT_DATA(2)),
1243 DEBUGFS_REG32(DC_COM_PIN_OUTPUT_DATA(3)),
1244 DEBUGFS_REG32(DC_COM_PIN_INPUT_ENABLE(0)),
1245 DEBUGFS_REG32(DC_COM_PIN_INPUT_ENABLE(1)),
1246 DEBUGFS_REG32(DC_COM_PIN_INPUT_ENABLE(2)),
1247 DEBUGFS_REG32(DC_COM_PIN_INPUT_ENABLE(3)),
1248 DEBUGFS_REG32(DC_COM_PIN_INPUT_DATA(0)),
1249 DEBUGFS_REG32(DC_COM_PIN_INPUT_DATA(1)),
1250 DEBUGFS_REG32(DC_COM_PIN_OUTPUT_SELECT(0)),
1251 DEBUGFS_REG32(DC_COM_PIN_OUTPUT_SELECT(1)),
1252 DEBUGFS_REG32(DC_COM_PIN_OUTPUT_SELECT(2)),
1253 DEBUGFS_REG32(DC_COM_PIN_OUTPUT_SELECT(3)),
1254 DEBUGFS_REG32(DC_COM_PIN_OUTPUT_SELECT(4)),
1255 DEBUGFS_REG32(DC_COM_PIN_OUTPUT_SELECT(5)),
1256 DEBUGFS_REG32(DC_COM_PIN_OUTPUT_SELECT(6)),
1257 DEBUGFS_REG32(DC_COM_PIN_MISC_CONTROL),
1258 DEBUGFS_REG32(DC_COM_PIN_PM0_CONTROL),
1259 DEBUGFS_REG32(DC_COM_PIN_PM0_DUTY_CYCLE),
1260 DEBUGFS_REG32(DC_COM_PIN_PM1_CONTROL),
1261 DEBUGFS_REG32(DC_COM_PIN_PM1_DUTY_CYCLE),
1262 DEBUGFS_REG32(DC_COM_SPI_CONTROL),
1263 DEBUGFS_REG32(DC_COM_SPI_START_BYTE),
1264 DEBUGFS_REG32(DC_COM_HSPI_WRITE_DATA_AB),
1265 DEBUGFS_REG32(DC_COM_HSPI_WRITE_DATA_CD),
1266 DEBUGFS_REG32(DC_COM_HSPI_CS_DC),
1267 DEBUGFS_REG32(DC_COM_SCRATCH_REGISTER_A),
1268 DEBUGFS_REG32(DC_COM_SCRATCH_REGISTER_B),
1269 DEBUGFS_REG32(DC_COM_GPIO_CTRL),
1270 DEBUGFS_REG32(DC_COM_GPIO_DEBOUNCE_COUNTER),
1271 DEBUGFS_REG32(DC_COM_CRC_CHECKSUM_LATCHED),
1272 DEBUGFS_REG32(DC_DISP_DISP_SIGNAL_OPTIONS0),
1273 DEBUGFS_REG32(DC_DISP_DISP_SIGNAL_OPTIONS1),
1274 DEBUGFS_REG32(DC_DISP_DISP_WIN_OPTIONS),
1275 DEBUGFS_REG32(DC_DISP_DISP_MEM_HIGH_PRIORITY),
1276 DEBUGFS_REG32(DC_DISP_DISP_MEM_HIGH_PRIORITY_TIMER),
1277 DEBUGFS_REG32(DC_DISP_DISP_TIMING_OPTIONS),
1278 DEBUGFS_REG32(DC_DISP_REF_TO_SYNC),
1279 DEBUGFS_REG32(DC_DISP_SYNC_WIDTH),
1280 DEBUGFS_REG32(DC_DISP_BACK_PORCH),
1281 DEBUGFS_REG32(DC_DISP_ACTIVE),
1282 DEBUGFS_REG32(DC_DISP_FRONT_PORCH),
1283 DEBUGFS_REG32(DC_DISP_H_PULSE0_CONTROL),
1284 DEBUGFS_REG32(DC_DISP_H_PULSE0_POSITION_A),
1285 DEBUGFS_REG32(DC_DISP_H_PULSE0_POSITION_B),
1286 DEBUGFS_REG32(DC_DISP_H_PULSE0_POSITION_C),
1287 DEBUGFS_REG32(DC_DISP_H_PULSE0_POSITION_D),
1288 DEBUGFS_REG32(DC_DISP_H_PULSE1_CONTROL),
1289 DEBUGFS_REG32(DC_DISP_H_PULSE1_POSITION_A),
1290 DEBUGFS_REG32(DC_DISP_H_PULSE1_POSITION_B),
1291 DEBUGFS_REG32(DC_DISP_H_PULSE1_POSITION_C),
1292 DEBUGFS_REG32(DC_DISP_H_PULSE1_POSITION_D),
1293 DEBUGFS_REG32(DC_DISP_H_PULSE2_CONTROL),
1294 DEBUGFS_REG32(DC_DISP_H_PULSE2_POSITION_A),
1295 DEBUGFS_REG32(DC_DISP_H_PULSE2_POSITION_B),
1296 DEBUGFS_REG32(DC_DISP_H_PULSE2_POSITION_C),
1297 DEBUGFS_REG32(DC_DISP_H_PULSE2_POSITION_D),
1298 DEBUGFS_REG32(DC_DISP_V_PULSE0_CONTROL),
1299 DEBUGFS_REG32(DC_DISP_V_PULSE0_POSITION_A),
1300 DEBUGFS_REG32(DC_DISP_V_PULSE0_POSITION_B),
1301 DEBUGFS_REG32(DC_DISP_V_PULSE0_POSITION_C),
1302 DEBUGFS_REG32(DC_DISP_V_PULSE1_CONTROL),
1303 DEBUGFS_REG32(DC_DISP_V_PULSE1_POSITION_A),
1304 DEBUGFS_REG32(DC_DISP_V_PULSE1_POSITION_B),
1305 DEBUGFS_REG32(DC_DISP_V_PULSE1_POSITION_C),
1306 DEBUGFS_REG32(DC_DISP_V_PULSE2_CONTROL),
1307 DEBUGFS_REG32(DC_DISP_V_PULSE2_POSITION_A),
1308 DEBUGFS_REG32(DC_DISP_V_PULSE3_CONTROL),
1309 DEBUGFS_REG32(DC_DISP_V_PULSE3_POSITION_A),
1310 DEBUGFS_REG32(DC_DISP_M0_CONTROL),
1311 DEBUGFS_REG32(DC_DISP_M1_CONTROL),
1312 DEBUGFS_REG32(DC_DISP_DI_CONTROL),
1313 DEBUGFS_REG32(DC_DISP_PP_CONTROL),
1314 DEBUGFS_REG32(DC_DISP_PP_SELECT_A),
1315 DEBUGFS_REG32(DC_DISP_PP_SELECT_B),
1316 DEBUGFS_REG32(DC_DISP_PP_SELECT_C),
1317 DEBUGFS_REG32(DC_DISP_PP_SELECT_D),
1318 DEBUGFS_REG32(DC_DISP_DISP_CLOCK_CONTROL),
1319 DEBUGFS_REG32(DC_DISP_DISP_INTERFACE_CONTROL),
1320 DEBUGFS_REG32(DC_DISP_DISP_COLOR_CONTROL),
1321 DEBUGFS_REG32(DC_DISP_SHIFT_CLOCK_OPTIONS),
1322 DEBUGFS_REG32(DC_DISP_DATA_ENABLE_OPTIONS),
1323 DEBUGFS_REG32(DC_DISP_SERIAL_INTERFACE_OPTIONS),
1324 DEBUGFS_REG32(DC_DISP_LCD_SPI_OPTIONS),
1325 DEBUGFS_REG32(DC_DISP_BORDER_COLOR),
1326 DEBUGFS_REG32(DC_DISP_COLOR_KEY0_LOWER),
1327 DEBUGFS_REG32(DC_DISP_COLOR_KEY0_UPPER),
1328 DEBUGFS_REG32(DC_DISP_COLOR_KEY1_LOWER),
1329 DEBUGFS_REG32(DC_DISP_COLOR_KEY1_UPPER),
1330 DEBUGFS_REG32(DC_DISP_CURSOR_FOREGROUND),
1331 DEBUGFS_REG32(DC_DISP_CURSOR_BACKGROUND),
1332 DEBUGFS_REG32(DC_DISP_CURSOR_START_ADDR),
1333 DEBUGFS_REG32(DC_DISP_CURSOR_START_ADDR_NS),
1334 DEBUGFS_REG32(DC_DISP_CURSOR_POSITION),
1335 DEBUGFS_REG32(DC_DISP_CURSOR_POSITION_NS),
1336 DEBUGFS_REG32(DC_DISP_INIT_SEQ_CONTROL),
1337 DEBUGFS_REG32(DC_DISP_SPI_INIT_SEQ_DATA_A),
1338 DEBUGFS_REG32(DC_DISP_SPI_INIT_SEQ_DATA_B),
1339 DEBUGFS_REG32(DC_DISP_SPI_INIT_SEQ_DATA_C),
1340 DEBUGFS_REG32(DC_DISP_SPI_INIT_SEQ_DATA_D),
1341 DEBUGFS_REG32(DC_DISP_DC_MCCIF_FIFOCTRL),
1342 DEBUGFS_REG32(DC_DISP_MCCIF_DISPLAY0A_HYST),
1343 DEBUGFS_REG32(DC_DISP_MCCIF_DISPLAY0B_HYST),
1344 DEBUGFS_REG32(DC_DISP_MCCIF_DISPLAY1A_HYST),
1345 DEBUGFS_REG32(DC_DISP_MCCIF_DISPLAY1B_HYST),
1346 DEBUGFS_REG32(DC_DISP_DAC_CRT_CTRL),
1347 DEBUGFS_REG32(DC_DISP_DISP_MISC_CONTROL),
1348 DEBUGFS_REG32(DC_DISP_SD_CONTROL),
1349 DEBUGFS_REG32(DC_DISP_SD_CSC_COEFF),
1350 DEBUGFS_REG32(DC_DISP_SD_LUT(0)),
1351 DEBUGFS_REG32(DC_DISP_SD_LUT(1)),
1352 DEBUGFS_REG32(DC_DISP_SD_LUT(2)),
1353 DEBUGFS_REG32(DC_DISP_SD_LUT(3)),
1354 DEBUGFS_REG32(DC_DISP_SD_LUT(4)),
1355 DEBUGFS_REG32(DC_DISP_SD_LUT(5)),
1356 DEBUGFS_REG32(DC_DISP_SD_LUT(6)),
1357 DEBUGFS_REG32(DC_DISP_SD_LUT(7)),
1358 DEBUGFS_REG32(DC_DISP_SD_LUT(8)),
1359 DEBUGFS_REG32(DC_DISP_SD_FLICKER_CONTROL),
1360 DEBUGFS_REG32(DC_DISP_DC_PIXEL_COUNT),
1361 DEBUGFS_REG32(DC_DISP_SD_HISTOGRAM(0)),
1362 DEBUGFS_REG32(DC_DISP_SD_HISTOGRAM(1)),
1363 DEBUGFS_REG32(DC_DISP_SD_HISTOGRAM(2)),
1364 DEBUGFS_REG32(DC_DISP_SD_HISTOGRAM(3)),
1365 DEBUGFS_REG32(DC_DISP_SD_HISTOGRAM(4)),
1366 DEBUGFS_REG32(DC_DISP_SD_HISTOGRAM(5)),
1367 DEBUGFS_REG32(DC_DISP_SD_HISTOGRAM(6)),
1368 DEBUGFS_REG32(DC_DISP_SD_HISTOGRAM(7)),
1369 DEBUGFS_REG32(DC_DISP_SD_BL_TF(0)),
1370 DEBUGFS_REG32(DC_DISP_SD_BL_TF(1)),
1371 DEBUGFS_REG32(DC_DISP_SD_BL_TF(2)),
1372 DEBUGFS_REG32(DC_DISP_SD_BL_TF(3)),
1373 DEBUGFS_REG32(DC_DISP_SD_BL_CONTROL),
1374 DEBUGFS_REG32(DC_DISP_SD_HW_K_VALUES),
1375 DEBUGFS_REG32(DC_DISP_SD_MAN_K_VALUES),
1376 DEBUGFS_REG32(DC_DISP_CURSOR_START_ADDR_HI),
1377 DEBUGFS_REG32(DC_DISP_BLEND_CURSOR_CONTROL),
1378 DEBUGFS_REG32(DC_WIN_WIN_OPTIONS),
1379 DEBUGFS_REG32(DC_WIN_BYTE_SWAP),
1380 DEBUGFS_REG32(DC_WIN_BUFFER_CONTROL),
1381 DEBUGFS_REG32(DC_WIN_COLOR_DEPTH),
1382 DEBUGFS_REG32(DC_WIN_POSITION),
1383 DEBUGFS_REG32(DC_WIN_SIZE),
1384 DEBUGFS_REG32(DC_WIN_PRESCALED_SIZE),
1385 DEBUGFS_REG32(DC_WIN_H_INITIAL_DDA),
1386 DEBUGFS_REG32(DC_WIN_V_INITIAL_DDA),
1387 DEBUGFS_REG32(DC_WIN_DDA_INC),
1388 DEBUGFS_REG32(DC_WIN_LINE_STRIDE),
1389 DEBUGFS_REG32(DC_WIN_BUF_STRIDE),
1390 DEBUGFS_REG32(DC_WIN_UV_BUF_STRIDE),
1391 DEBUGFS_REG32(DC_WIN_BUFFER_ADDR_MODE),
1392 DEBUGFS_REG32(DC_WIN_DV_CONTROL),
1393 DEBUGFS_REG32(DC_WIN_BLEND_NOKEY),
1394 DEBUGFS_REG32(DC_WIN_BLEND_1WIN),
1395 DEBUGFS_REG32(DC_WIN_BLEND_2WIN_X),
1396 DEBUGFS_REG32(DC_WIN_BLEND_2WIN_Y),
1397 DEBUGFS_REG32(DC_WIN_BLEND_3WIN_XY),
1398 DEBUGFS_REG32(DC_WIN_HP_FETCH_CONTROL),
1399 DEBUGFS_REG32(DC_WINBUF_START_ADDR),
1400 DEBUGFS_REG32(DC_WINBUF_START_ADDR_NS),
1401 DEBUGFS_REG32(DC_WINBUF_START_ADDR_U),
1402 DEBUGFS_REG32(DC_WINBUF_START_ADDR_U_NS),
1403 DEBUGFS_REG32(DC_WINBUF_START_ADDR_V),
1404 DEBUGFS_REG32(DC_WINBUF_START_ADDR_V_NS),
1405 DEBUGFS_REG32(DC_WINBUF_ADDR_H_OFFSET),
1406 DEBUGFS_REG32(DC_WINBUF_ADDR_H_OFFSET_NS),
1407 DEBUGFS_REG32(DC_WINBUF_ADDR_V_OFFSET),
1408 DEBUGFS_REG32(DC_WINBUF_ADDR_V_OFFSET_NS),
1409 DEBUGFS_REG32(DC_WINBUF_UFLOW_STATUS),
1410 DEBUGFS_REG32(DC_WINBUF_AD_UFLOW_STATUS),
1411 DEBUGFS_REG32(DC_WINBUF_BD_UFLOW_STATUS),
1412 DEBUGFS_REG32(DC_WINBUF_CD_UFLOW_STATUS),
1413};
1414
1415static int tegra_dc_show_regs(struct seq_file *s, void *data)
1416{
1417 struct drm_info_node *node = s->private;
1418 struct tegra_dc *dc = node->info_ent->data;
1419 unsigned int i;
1420 int err = 0;
1421
1422 drm_modeset_lock(&dc->base.mutex, NULL);
1423
1424 if (!dc->base.state->active) {
1425 err = -EBUSY;
1426 goto unlock;
1427 }
1428
1429 for (i = 0; i < ARRAY_SIZE(tegra_dc_regs); i++) {
1430 unsigned int offset = tegra_dc_regs[i].offset;
1431
1432 seq_printf(s, "%-40s %#05x %08x\n", tegra_dc_regs[i].name,
1433 offset, tegra_dc_readl(dc, offset));
1434 }
1435
1436unlock:
1437 drm_modeset_unlock(&dc->base.mutex);
1438 return err;
1439}
1440
1441static int tegra_dc_show_crc(struct seq_file *s, void *data)
1442{
1443 struct drm_info_node *node = s->private;
1444 struct tegra_dc *dc = node->info_ent->data;
1445 int err = 0;
1446 u32 value;
1447
1448 drm_modeset_lock(&dc->base.mutex, NULL);
1449
1450 if (!dc->base.state->active) {
1451 err = -EBUSY;
1452 goto unlock;
1453 }
1454
1455 value = DC_COM_CRC_CONTROL_ACTIVE_DATA | DC_COM_CRC_CONTROL_ENABLE;
1456 tegra_dc_writel(dc, value, DC_COM_CRC_CONTROL);
1457 tegra_dc_commit(dc);
1458
1459 drm_crtc_wait_one_vblank(&dc->base);
1460 drm_crtc_wait_one_vblank(&dc->base);
1461
1462 value = tegra_dc_readl(dc, DC_COM_CRC_CHECKSUM);
1463 seq_printf(s, "%08x\n", value);
1464
1465 tegra_dc_writel(dc, 0, DC_COM_CRC_CONTROL);
1466
1467unlock:
1468 drm_modeset_unlock(&dc->base.mutex);
1469 return err;
1470}
1471
1472static int tegra_dc_show_stats(struct seq_file *s, void *data)
1473{
1474 struct drm_info_node *node = s->private;
1475 struct tegra_dc *dc = node->info_ent->data;
1476
1477 seq_printf(s, "frames: %lu\n", dc->stats.frames);
1478 seq_printf(s, "vblank: %lu\n", dc->stats.vblank);
1479 seq_printf(s, "underflow: %lu\n", dc->stats.underflow);
1480 seq_printf(s, "overflow: %lu\n", dc->stats.overflow);
1481
1482 return 0;
1483}
1484
1485static struct drm_info_list debugfs_files[] = {
1486 { "regs", tegra_dc_show_regs, 0, NULL },
1487 { "crc", tegra_dc_show_crc, 0, NULL },
1488 { "stats", tegra_dc_show_stats, 0, NULL },
1489};
1490
1491static int tegra_dc_late_register(struct drm_crtc *crtc)
1492{
1493 unsigned int i, count = ARRAY_SIZE(debugfs_files);
1494 struct drm_minor *minor = crtc->dev->primary;
1495 struct dentry *root;
1496 struct tegra_dc *dc = to_tegra_dc(crtc);
1497 int err;
1498
1499#ifdef CONFIG_DEBUG_FS
1500 root = crtc->debugfs_entry;
1501#else
1502 root = NULL;
1503#endif
1504
1505 dc->debugfs_files = kmemdup(debugfs_files, sizeof(debugfs_files),
1506 GFP_KERNEL);
1507 if (!dc->debugfs_files)
1508 return -ENOMEM;
1509
1510 for (i = 0; i < count; i++)
1511 dc->debugfs_files[i].data = dc;
1512
1513 err = drm_debugfs_create_files(dc->debugfs_files, count, root, minor);
1514 if (err < 0)
1515 goto free;
1516
1517 return 0;
1518
1519free:
1520 kfree(dc->debugfs_files);
1521 dc->debugfs_files = NULL;
1522
1523 return err;
1524}
1525
1526static void tegra_dc_early_unregister(struct drm_crtc *crtc)
1527{
1528 unsigned int count = ARRAY_SIZE(debugfs_files);
1529 struct drm_minor *minor = crtc->dev->primary;
1530 struct tegra_dc *dc = to_tegra_dc(crtc);
1531
1532 drm_debugfs_remove_files(dc->debugfs_files, count, minor);
1533 kfree(dc->debugfs_files);
1534 dc->debugfs_files = NULL;
1535}
1536
1537static u32 tegra_dc_get_vblank_counter(struct drm_crtc *crtc)
1538{
1539 struct tegra_dc *dc = to_tegra_dc(crtc);
1540
1541 /* XXX vblank syncpoints don't work with nvdisplay yet */
1542 if (dc->syncpt && !dc->soc->has_nvdisplay)
1543 return host1x_syncpt_read(dc->syncpt);
1544
1545 /* fallback to software emulated VBLANK counter */
1546 return (u32)drm_crtc_vblank_count(&dc->base);
1547}
1548
1549static int tegra_dc_enable_vblank(struct drm_crtc *crtc)
1550{
1551 struct tegra_dc *dc = to_tegra_dc(crtc);
1552 u32 value;
1553
1554 value = tegra_dc_readl(dc, DC_CMD_INT_MASK);
1555 value |= VBLANK_INT;
1556 tegra_dc_writel(dc, value, DC_CMD_INT_MASK);
1557
1558 return 0;
1559}
1560
1561static void tegra_dc_disable_vblank(struct drm_crtc *crtc)
1562{
1563 struct tegra_dc *dc = to_tegra_dc(crtc);
1564 u32 value;
1565
1566 value = tegra_dc_readl(dc, DC_CMD_INT_MASK);
1567 value &= ~VBLANK_INT;
1568 tegra_dc_writel(dc, value, DC_CMD_INT_MASK);
1569}
1570
1571static const struct drm_crtc_funcs tegra_crtc_funcs = {
1572 .page_flip = drm_atomic_helper_page_flip,
1573 .set_config = drm_atomic_helper_set_config,
1574 .destroy = tegra_dc_destroy,
1575 .reset = tegra_crtc_reset,
1576 .atomic_duplicate_state = tegra_crtc_atomic_duplicate_state,
1577 .atomic_destroy_state = tegra_crtc_atomic_destroy_state,
1578 .late_register = tegra_dc_late_register,
1579 .early_unregister = tegra_dc_early_unregister,
1580 .get_vblank_counter = tegra_dc_get_vblank_counter,
1581 .enable_vblank = tegra_dc_enable_vblank,
1582 .disable_vblank = tegra_dc_disable_vblank,
1583};
1584
1585static int tegra_dc_set_timings(struct tegra_dc *dc,
1586 struct drm_display_mode *mode)
1587{
1588 unsigned int h_ref_to_sync = 1;
1589 unsigned int v_ref_to_sync = 1;
1590 unsigned long value;
1591
1592 if (!dc->soc->has_nvdisplay) {
1593 tegra_dc_writel(dc, 0x0, DC_DISP_DISP_TIMING_OPTIONS);
1594
1595 value = (v_ref_to_sync << 16) | h_ref_to_sync;
1596 tegra_dc_writel(dc, value, DC_DISP_REF_TO_SYNC);
1597 }
1598
1599 value = ((mode->vsync_end - mode->vsync_start) << 16) |
1600 ((mode->hsync_end - mode->hsync_start) << 0);
1601 tegra_dc_writel(dc, value, DC_DISP_SYNC_WIDTH);
1602
1603 value = ((mode->vtotal - mode->vsync_end) << 16) |
1604 ((mode->htotal - mode->hsync_end) << 0);
1605 tegra_dc_writel(dc, value, DC_DISP_BACK_PORCH);
1606
1607 value = ((mode->vsync_start - mode->vdisplay) << 16) |
1608 ((mode->hsync_start - mode->hdisplay) << 0);
1609 tegra_dc_writel(dc, value, DC_DISP_FRONT_PORCH);
1610
1611 value = (mode->vdisplay << 16) | mode->hdisplay;
1612 tegra_dc_writel(dc, value, DC_DISP_ACTIVE);
1613
1614 return 0;
1615}
1616
1617/**
1618 * tegra_dc_state_setup_clock - check clock settings and store them in atomic
1619 * state
1620 * @dc: display controller
1621 * @crtc_state: CRTC atomic state
1622 * @clk: parent clock for display controller
1623 * @pclk: pixel clock
1624 * @div: shift clock divider
1625 *
1626 * Returns:
1627 * 0 on success or a negative error-code on failure.
1628 */
1629int tegra_dc_state_setup_clock(struct tegra_dc *dc,
1630 struct drm_crtc_state *crtc_state,
1631 struct clk *clk, unsigned long pclk,
1632 unsigned int div)
1633{
1634 struct tegra_dc_state *state = to_dc_state(crtc_state);
1635
1636 if (!clk_has_parent(dc->clk, clk))
1637 return -EINVAL;
1638
1639 state->clk = clk;
1640 state->pclk = pclk;
1641 state->div = div;
1642
1643 return 0;
1644}
1645
1646static void tegra_dc_commit_state(struct tegra_dc *dc,
1647 struct tegra_dc_state *state)
1648{
1649 u32 value;
1650 int err;
1651
1652 err = clk_set_parent(dc->clk, state->clk);
1653 if (err < 0)
1654 dev_err(dc->dev, "failed to set parent clock: %d\n", err);
1655
1656 /*
1657 * Outputs may not want to change the parent clock rate. This is only
1658 * relevant to Tegra20 where only a single display PLL is available.
1659 * Since that PLL would typically be used for HDMI, an internal LVDS
1660 * panel would need to be driven by some other clock such as PLL_P
1661 * which is shared with other peripherals. Changing the clock rate
1662 * should therefore be avoided.
1663 */
1664 if (state->pclk > 0) {
1665 err = clk_set_rate(state->clk, state->pclk);
1666 if (err < 0)
1667 dev_err(dc->dev,
1668 "failed to set clock rate to %lu Hz\n",
1669 state->pclk);
1670 }
1671
1672 DRM_DEBUG_KMS("rate: %lu, div: %u\n", clk_get_rate(dc->clk),
1673 state->div);
1674 DRM_DEBUG_KMS("pclk: %lu\n", state->pclk);
1675
1676 if (!dc->soc->has_nvdisplay) {
1677 value = SHIFT_CLK_DIVIDER(state->div) | PIXEL_CLK_DIVIDER_PCD1;
1678 tegra_dc_writel(dc, value, DC_DISP_DISP_CLOCK_CONTROL);
1679 }
1680
1681 err = clk_set_rate(dc->clk, state->pclk);
1682 if (err < 0)
1683 dev_err(dc->dev, "failed to set clock %pC to %lu Hz: %d\n",
1684 dc->clk, state->pclk, err);
1685}
1686
1687static void tegra_dc_stop(struct tegra_dc *dc)
1688{
1689 u32 value;
1690
1691 /* stop the display controller */
1692 value = tegra_dc_readl(dc, DC_CMD_DISPLAY_COMMAND);
1693 value &= ~DISP_CTRL_MODE_MASK;
1694 tegra_dc_writel(dc, value, DC_CMD_DISPLAY_COMMAND);
1695
1696 tegra_dc_commit(dc);
1697}
1698
1699static bool tegra_dc_idle(struct tegra_dc *dc)
1700{
1701 u32 value;
1702
1703 value = tegra_dc_readl_active(dc, DC_CMD_DISPLAY_COMMAND);
1704
1705 return (value & DISP_CTRL_MODE_MASK) == 0;
1706}
1707
1708static int tegra_dc_wait_idle(struct tegra_dc *dc, unsigned long timeout)
1709{
1710 timeout = jiffies + msecs_to_jiffies(timeout);
1711
1712 while (time_before(jiffies, timeout)) {
1713 if (tegra_dc_idle(dc))
1714 return 0;
1715
1716 usleep_range(1000, 2000);
1717 }
1718
1719 dev_dbg(dc->dev, "timeout waiting for DC to become idle\n");
1720 return -ETIMEDOUT;
1721}
1722
1723static void tegra_crtc_atomic_disable(struct drm_crtc *crtc,
1724 struct drm_crtc_state *old_state)
1725{
1726 struct tegra_dc *dc = to_tegra_dc(crtc);
1727 u32 value;
1728
1729 if (!tegra_dc_idle(dc)) {
1730 tegra_dc_stop(dc);
1731
1732 /*
1733 * Ignore the return value, there isn't anything useful to do
1734 * in case this fails.
1735 */
1736 tegra_dc_wait_idle(dc, 100);
1737 }
1738
1739 /*
1740 * This should really be part of the RGB encoder driver, but clearing
1741 * these bits has the side-effect of stopping the display controller.
1742 * When that happens no VBLANK interrupts will be raised. At the same
1743 * time the encoder is disabled before the display controller, so the
1744 * above code is always going to timeout waiting for the controller
1745 * to go idle.
1746 *
1747 * Given the close coupling between the RGB encoder and the display
1748 * controller doing it here is still kind of okay. None of the other
1749 * encoder drivers require these bits to be cleared.
1750 *
1751 * XXX: Perhaps given that the display controller is switched off at
1752 * this point anyway maybe clearing these bits isn't even useful for
1753 * the RGB encoder?
1754 */
1755 if (dc->rgb) {
1756 value = tegra_dc_readl(dc, DC_CMD_DISPLAY_POWER_CONTROL);
1757 value &= ~(PW0_ENABLE | PW1_ENABLE | PW2_ENABLE | PW3_ENABLE |
1758 PW4_ENABLE | PM0_ENABLE | PM1_ENABLE);
1759 tegra_dc_writel(dc, value, DC_CMD_DISPLAY_POWER_CONTROL);
1760 }
1761
1762 tegra_dc_stats_reset(&dc->stats);
1763 drm_crtc_vblank_off(crtc);
1764
1765 spin_lock_irq(&crtc->dev->event_lock);
1766
1767 if (crtc->state->event) {
1768 drm_crtc_send_vblank_event(crtc, crtc->state->event);
1769 crtc->state->event = NULL;
1770 }
1771
1772 spin_unlock_irq(&crtc->dev->event_lock);
1773
1774 pm_runtime_put_sync(dc->dev);
1775}
1776
1777static void tegra_crtc_atomic_enable(struct drm_crtc *crtc,
1778 struct drm_crtc_state *old_state)
1779{
1780 struct drm_display_mode *mode = &crtc->state->adjusted_mode;
1781 struct tegra_dc_state *state = to_dc_state(crtc->state);
1782 struct tegra_dc *dc = to_tegra_dc(crtc);
1783 u32 value;
1784
1785 pm_runtime_get_sync(dc->dev);
1786
1787 /* initialize display controller */
1788 if (dc->syncpt) {
1789 u32 syncpt = host1x_syncpt_id(dc->syncpt), enable;
1790
1791 if (dc->soc->has_nvdisplay)
1792 enable = 1 << 31;
1793 else
1794 enable = 1 << 8;
1795
1796 value = SYNCPT_CNTRL_NO_STALL;
1797 tegra_dc_writel(dc, value, DC_CMD_GENERAL_INCR_SYNCPT_CNTRL);
1798
1799 value = enable | syncpt;
1800 tegra_dc_writel(dc, value, DC_CMD_CONT_SYNCPT_VSYNC);
1801 }
1802
1803 if (dc->soc->has_nvdisplay) {
1804 value = DSC_TO_UF_INT | DSC_BBUF_UF_INT | DSC_RBUF_UF_INT |
1805 DSC_OBUF_UF_INT;
1806 tegra_dc_writel(dc, value, DC_CMD_INT_TYPE);
1807
1808 value = DSC_TO_UF_INT | DSC_BBUF_UF_INT | DSC_RBUF_UF_INT |
1809 DSC_OBUF_UF_INT | SD3_BUCKET_WALK_DONE_INT |
1810 HEAD_UF_INT | MSF_INT | REG_TMOUT_INT |
1811 REGION_CRC_INT | V_PULSE2_INT | V_PULSE3_INT |
1812 VBLANK_INT | FRAME_END_INT;
1813 tegra_dc_writel(dc, value, DC_CMD_INT_POLARITY);
1814
1815 value = SD3_BUCKET_WALK_DONE_INT | HEAD_UF_INT | VBLANK_INT |
1816 FRAME_END_INT;
1817 tegra_dc_writel(dc, value, DC_CMD_INT_ENABLE);
1818
1819 value = HEAD_UF_INT | REG_TMOUT_INT | FRAME_END_INT;
1820 tegra_dc_writel(dc, value, DC_CMD_INT_MASK);
1821
1822 tegra_dc_writel(dc, READ_MUX, DC_CMD_STATE_ACCESS);
1823 } else {
1824 value = WIN_A_UF_INT | WIN_B_UF_INT | WIN_C_UF_INT |
1825 WIN_A_OF_INT | WIN_B_OF_INT | WIN_C_OF_INT;
1826 tegra_dc_writel(dc, value, DC_CMD_INT_TYPE);
1827
1828 value = WIN_A_UF_INT | WIN_B_UF_INT | WIN_C_UF_INT |
1829 WIN_A_OF_INT | WIN_B_OF_INT | WIN_C_OF_INT;
1830 tegra_dc_writel(dc, value, DC_CMD_INT_POLARITY);
1831
1832 /* initialize timer */
1833 value = CURSOR_THRESHOLD(0) | WINDOW_A_THRESHOLD(0x20) |
1834 WINDOW_B_THRESHOLD(0x20) | WINDOW_C_THRESHOLD(0x20);
1835 tegra_dc_writel(dc, value, DC_DISP_DISP_MEM_HIGH_PRIORITY);
1836
1837 value = CURSOR_THRESHOLD(0) | WINDOW_A_THRESHOLD(1) |
1838 WINDOW_B_THRESHOLD(1) | WINDOW_C_THRESHOLD(1);
1839 tegra_dc_writel(dc, value, DC_DISP_DISP_MEM_HIGH_PRIORITY_TIMER);
1840
1841 value = VBLANK_INT | WIN_A_UF_INT | WIN_B_UF_INT | WIN_C_UF_INT |
1842 WIN_A_OF_INT | WIN_B_OF_INT | WIN_C_OF_INT;
1843 tegra_dc_writel(dc, value, DC_CMD_INT_ENABLE);
1844
1845 value = WIN_A_UF_INT | WIN_B_UF_INT | WIN_C_UF_INT |
1846 WIN_A_OF_INT | WIN_B_OF_INT | WIN_C_OF_INT;
1847 tegra_dc_writel(dc, value, DC_CMD_INT_MASK);
1848 }
1849
1850 if (dc->soc->supports_background_color)
1851 tegra_dc_writel(dc, 0, DC_DISP_BLEND_BACKGROUND_COLOR);
1852 else
1853 tegra_dc_writel(dc, 0, DC_DISP_BORDER_COLOR);
1854
1855 /* apply PLL and pixel clock changes */
1856 tegra_dc_commit_state(dc, state);
1857
1858 /* program display mode */
1859 tegra_dc_set_timings(dc, mode);
1860
1861 /* interlacing isn't supported yet, so disable it */
1862 if (dc->soc->supports_interlacing) {
1863 value = tegra_dc_readl(dc, DC_DISP_INTERLACE_CONTROL);
1864 value &= ~INTERLACE_ENABLE;
1865 tegra_dc_writel(dc, value, DC_DISP_INTERLACE_CONTROL);
1866 }
1867
1868 value = tegra_dc_readl(dc, DC_CMD_DISPLAY_COMMAND);
1869 value &= ~DISP_CTRL_MODE_MASK;
1870 value |= DISP_CTRL_MODE_C_DISPLAY;
1871 tegra_dc_writel(dc, value, DC_CMD_DISPLAY_COMMAND);
1872
1873 if (!dc->soc->has_nvdisplay) {
1874 value = tegra_dc_readl(dc, DC_CMD_DISPLAY_POWER_CONTROL);
1875 value |= PW0_ENABLE | PW1_ENABLE | PW2_ENABLE | PW3_ENABLE |
1876 PW4_ENABLE | PM0_ENABLE | PM1_ENABLE;
1877 tegra_dc_writel(dc, value, DC_CMD_DISPLAY_POWER_CONTROL);
1878 }
1879
1880 /* enable underflow reporting and display red for missing pixels */
1881 if (dc->soc->has_nvdisplay) {
1882 value = UNDERFLOW_MODE_RED | UNDERFLOW_REPORT_ENABLE;
1883 tegra_dc_writel(dc, value, DC_COM_RG_UNDERFLOW);
1884 }
1885
1886 tegra_dc_commit(dc);
1887
1888 drm_crtc_vblank_on(crtc);
1889}
1890
1891static void tegra_crtc_atomic_begin(struct drm_crtc *crtc,
1892 struct drm_crtc_state *old_crtc_state)
1893{
1894 unsigned long flags;
1895
1896 if (crtc->state->event) {
1897 spin_lock_irqsave(&crtc->dev->event_lock, flags);
1898
1899 if (drm_crtc_vblank_get(crtc) != 0)
1900 drm_crtc_send_vblank_event(crtc, crtc->state->event);
1901 else
1902 drm_crtc_arm_vblank_event(crtc, crtc->state->event);
1903
1904 spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
1905
1906 crtc->state->event = NULL;
1907 }
1908}
1909
1910static void tegra_crtc_atomic_flush(struct drm_crtc *crtc,
1911 struct drm_crtc_state *old_crtc_state)
1912{
1913 struct tegra_dc_state *state = to_dc_state(crtc->state);
1914 struct tegra_dc *dc = to_tegra_dc(crtc);
1915 u32 value;
1916
1917 value = state->planes << 8 | GENERAL_UPDATE;
1918 tegra_dc_writel(dc, value, DC_CMD_STATE_CONTROL);
1919 value = tegra_dc_readl(dc, DC_CMD_STATE_CONTROL);
1920
1921 value = state->planes | GENERAL_ACT_REQ;
1922 tegra_dc_writel(dc, value, DC_CMD_STATE_CONTROL);
1923 value = tegra_dc_readl(dc, DC_CMD_STATE_CONTROL);
1924}
1925
1926static const struct drm_crtc_helper_funcs tegra_crtc_helper_funcs = {
1927 .atomic_begin = tegra_crtc_atomic_begin,
1928 .atomic_flush = tegra_crtc_atomic_flush,
1929 .atomic_enable = tegra_crtc_atomic_enable,
1930 .atomic_disable = tegra_crtc_atomic_disable,
1931};
1932
1933static irqreturn_t tegra_dc_irq(int irq, void *data)
1934{
1935 struct tegra_dc *dc = data;
1936 unsigned long status;
1937
1938 status = tegra_dc_readl(dc, DC_CMD_INT_STATUS);
1939 tegra_dc_writel(dc, status, DC_CMD_INT_STATUS);
1940
1941 if (status & FRAME_END_INT) {
1942 /*
1943 dev_dbg(dc->dev, "%s(): frame end\n", __func__);
1944 */
1945 dc->stats.frames++;
1946 }
1947
1948 if (status & VBLANK_INT) {
1949 /*
1950 dev_dbg(dc->dev, "%s(): vertical blank\n", __func__);
1951 */
1952 drm_crtc_handle_vblank(&dc->base);
1953 dc->stats.vblank++;
1954 }
1955
1956 if (status & (WIN_A_UF_INT | WIN_B_UF_INT | WIN_C_UF_INT)) {
1957 /*
1958 dev_dbg(dc->dev, "%s(): underflow\n", __func__);
1959 */
1960 dc->stats.underflow++;
1961 }
1962
1963 if (status & (WIN_A_OF_INT | WIN_B_OF_INT | WIN_C_OF_INT)) {
1964 /*
1965 dev_dbg(dc->dev, "%s(): overflow\n", __func__);
1966 */
1967 dc->stats.overflow++;
1968 }
1969
1970 if (status & HEAD_UF_INT) {
1971 dev_dbg_ratelimited(dc->dev, "%s(): head underflow\n", __func__);
1972 dc->stats.underflow++;
1973 }
1974
1975 return IRQ_HANDLED;
1976}
1977
1978static bool tegra_dc_has_window_groups(struct tegra_dc *dc)
1979{
1980 unsigned int i;
1981
1982 if (!dc->soc->wgrps)
1983 return true;
1984
1985 for (i = 0; i < dc->soc->num_wgrps; i++) {
1986 const struct tegra_windowgroup_soc *wgrp = &dc->soc->wgrps[i];
1987
1988 if (wgrp->dc == dc->pipe && wgrp->num_windows > 0)
1989 return true;
1990 }
1991
1992 return false;
1993}
1994
1995static int tegra_dc_init(struct host1x_client *client)
1996{
1997 struct drm_device *drm = dev_get_drvdata(client->parent);
1998 unsigned long flags = HOST1X_SYNCPT_CLIENT_MANAGED;
1999 struct tegra_dc *dc = host1x_client_to_dc(client);
2000 struct tegra_drm *tegra = drm->dev_private;
2001 struct drm_plane *primary = NULL;
2002 struct drm_plane *cursor = NULL;
2003 int err;
2004
2005 /*
2006 * XXX do not register DCs with no window groups because we cannot
2007 * assign a primary plane to them, which in turn will cause KMS to
2008 * crash.
2009 */
2010 if (!tegra_dc_has_window_groups(dc))
2011 return 0;
2012
2013 dc->syncpt = host1x_syncpt_request(client, flags);
2014 if (!dc->syncpt)
2015 dev_warn(dc->dev, "failed to allocate syncpoint\n");
2016
2017 dc->group = host1x_client_iommu_attach(client, true);
2018 if (IS_ERR(dc->group)) {
2019 err = PTR_ERR(dc->group);
2020 dev_err(client->dev, "failed to attach to domain: %d\n", err);
2021 return err;
2022 }
2023
2024 if (dc->soc->wgrps)
2025 primary = tegra_dc_add_shared_planes(drm, dc);
2026 else
2027 primary = tegra_dc_add_planes(drm, dc);
2028
2029 if (IS_ERR(primary)) {
2030 err = PTR_ERR(primary);
2031 goto cleanup;
2032 }
2033
2034 if (dc->soc->supports_cursor) {
2035 cursor = tegra_dc_cursor_plane_create(drm, dc);
2036 if (IS_ERR(cursor)) {
2037 err = PTR_ERR(cursor);
2038 goto cleanup;
2039 }
2040 } else {
2041 /* dedicate one overlay to mouse cursor */
2042 cursor = tegra_dc_overlay_plane_create(drm, dc, 2, true);
2043 if (IS_ERR(cursor)) {
2044 err = PTR_ERR(cursor);
2045 goto cleanup;
2046 }
2047 }
2048
2049 err = drm_crtc_init_with_planes(drm, &dc->base, primary, cursor,
2050 &tegra_crtc_funcs, NULL);
2051 if (err < 0)
2052 goto cleanup;
2053
2054 drm_crtc_helper_add(&dc->base, &tegra_crtc_helper_funcs);
2055
2056 /*
2057 * Keep track of the minimum pitch alignment across all display
2058 * controllers.
2059 */
2060 if (dc->soc->pitch_align > tegra->pitch_align)
2061 tegra->pitch_align = dc->soc->pitch_align;
2062
2063 err = tegra_dc_rgb_init(drm, dc);
2064 if (err < 0 && err != -ENODEV) {
2065 dev_err(dc->dev, "failed to initialize RGB output: %d\n", err);
2066 goto cleanup;
2067 }
2068
2069 err = devm_request_irq(dc->dev, dc->irq, tegra_dc_irq, 0,
2070 dev_name(dc->dev), dc);
2071 if (err < 0) {
2072 dev_err(dc->dev, "failed to request IRQ#%u: %d\n", dc->irq,
2073 err);
2074 goto cleanup;
2075 }
2076
2077 return 0;
2078
2079cleanup:
2080 if (!IS_ERR_OR_NULL(cursor))
2081 drm_plane_cleanup(cursor);
2082
2083 if (!IS_ERR(primary))
2084 drm_plane_cleanup(primary);
2085
2086 host1x_client_iommu_detach(client, dc->group);
2087 host1x_syncpt_free(dc->syncpt);
2088
2089 return err;
2090}
2091
2092static int tegra_dc_exit(struct host1x_client *client)
2093{
2094 struct tegra_dc *dc = host1x_client_to_dc(client);
2095 int err;
2096
2097 if (!tegra_dc_has_window_groups(dc))
2098 return 0;
2099
2100 devm_free_irq(dc->dev, dc->irq, dc);
2101
2102 err = tegra_dc_rgb_exit(dc);
2103 if (err) {
2104 dev_err(dc->dev, "failed to shutdown RGB output: %d\n", err);
2105 return err;
2106 }
2107
2108 host1x_client_iommu_detach(client, dc->group);
2109 host1x_syncpt_free(dc->syncpt);
2110
2111 return 0;
2112}
2113
2114static const struct host1x_client_ops dc_client_ops = {
2115 .init = tegra_dc_init,
2116 .exit = tegra_dc_exit,
2117};
2118
2119static const struct tegra_dc_soc_info tegra20_dc_soc_info = {
2120 .supports_background_color = false,
2121 .supports_interlacing = false,
2122 .supports_cursor = false,
2123 .supports_block_linear = false,
2124 .has_legacy_blending = true,
2125 .pitch_align = 8,
2126 .has_powergate = false,
2127 .coupled_pm = true,
2128 .has_nvdisplay = false,
2129 .num_primary_formats = ARRAY_SIZE(tegra20_primary_formats),
2130 .primary_formats = tegra20_primary_formats,
2131 .num_overlay_formats = ARRAY_SIZE(tegra20_overlay_formats),
2132 .overlay_formats = tegra20_overlay_formats,
2133 .modifiers = tegra20_modifiers,
2134 .has_win_a_without_filters = true,
2135 .has_win_c_without_vert_filter = true,
2136};
2137
2138static const struct tegra_dc_soc_info tegra30_dc_soc_info = {
2139 .supports_background_color = false,
2140 .supports_interlacing = false,
2141 .supports_cursor = false,
2142 .supports_block_linear = false,
2143 .has_legacy_blending = true,
2144 .pitch_align = 8,
2145 .has_powergate = false,
2146 .coupled_pm = false,
2147 .has_nvdisplay = false,
2148 .num_primary_formats = ARRAY_SIZE(tegra20_primary_formats),
2149 .primary_formats = tegra20_primary_formats,
2150 .num_overlay_formats = ARRAY_SIZE(tegra20_overlay_formats),
2151 .overlay_formats = tegra20_overlay_formats,
2152 .modifiers = tegra20_modifiers,
2153 .has_win_a_without_filters = false,
2154 .has_win_c_without_vert_filter = false,
2155};
2156
2157static const struct tegra_dc_soc_info tegra114_dc_soc_info = {
2158 .supports_background_color = false,
2159 .supports_interlacing = false,
2160 .supports_cursor = false,
2161 .supports_block_linear = false,
2162 .has_legacy_blending = true,
2163 .pitch_align = 64,
2164 .has_powergate = true,
2165 .coupled_pm = false,
2166 .has_nvdisplay = false,
2167 .num_primary_formats = ARRAY_SIZE(tegra114_primary_formats),
2168 .primary_formats = tegra114_primary_formats,
2169 .num_overlay_formats = ARRAY_SIZE(tegra114_overlay_formats),
2170 .overlay_formats = tegra114_overlay_formats,
2171 .modifiers = tegra20_modifiers,
2172 .has_win_a_without_filters = false,
2173 .has_win_c_without_vert_filter = false,
2174};
2175
2176static const struct tegra_dc_soc_info tegra124_dc_soc_info = {
2177 .supports_background_color = true,
2178 .supports_interlacing = true,
2179 .supports_cursor = true,
2180 .supports_block_linear = true,
2181 .has_legacy_blending = false,
2182 .pitch_align = 64,
2183 .has_powergate = true,
2184 .coupled_pm = false,
2185 .has_nvdisplay = false,
2186 .num_primary_formats = ARRAY_SIZE(tegra124_primary_formats),
2187 .primary_formats = tegra124_primary_formats,
2188 .num_overlay_formats = ARRAY_SIZE(tegra124_overlay_formats),
2189 .overlay_formats = tegra124_overlay_formats,
2190 .modifiers = tegra124_modifiers,
2191 .has_win_a_without_filters = false,
2192 .has_win_c_without_vert_filter = false,
2193};
2194
2195static const struct tegra_dc_soc_info tegra210_dc_soc_info = {
2196 .supports_background_color = true,
2197 .supports_interlacing = true,
2198 .supports_cursor = true,
2199 .supports_block_linear = true,
2200 .has_legacy_blending = false,
2201 .pitch_align = 64,
2202 .has_powergate = true,
2203 .coupled_pm = false,
2204 .has_nvdisplay = false,
2205 .num_primary_formats = ARRAY_SIZE(tegra114_primary_formats),
2206 .primary_formats = tegra114_primary_formats,
2207 .num_overlay_formats = ARRAY_SIZE(tegra114_overlay_formats),
2208 .overlay_formats = tegra114_overlay_formats,
2209 .modifiers = tegra124_modifiers,
2210 .has_win_a_without_filters = false,
2211 .has_win_c_without_vert_filter = false,
2212};
2213
2214static const struct tegra_windowgroup_soc tegra186_dc_wgrps[] = {
2215 {
2216 .index = 0,
2217 .dc = 0,
2218 .windows = (const unsigned int[]) { 0 },
2219 .num_windows = 1,
2220 }, {
2221 .index = 1,
2222 .dc = 1,
2223 .windows = (const unsigned int[]) { 1 },
2224 .num_windows = 1,
2225 }, {
2226 .index = 2,
2227 .dc = 1,
2228 .windows = (const unsigned int[]) { 2 },
2229 .num_windows = 1,
2230 }, {
2231 .index = 3,
2232 .dc = 2,
2233 .windows = (const unsigned int[]) { 3 },
2234 .num_windows = 1,
2235 }, {
2236 .index = 4,
2237 .dc = 2,
2238 .windows = (const unsigned int[]) { 4 },
2239 .num_windows = 1,
2240 }, {
2241 .index = 5,
2242 .dc = 2,
2243 .windows = (const unsigned int[]) { 5 },
2244 .num_windows = 1,
2245 },
2246};
2247
2248static const struct tegra_dc_soc_info tegra186_dc_soc_info = {
2249 .supports_background_color = true,
2250 .supports_interlacing = true,
2251 .supports_cursor = true,
2252 .supports_block_linear = true,
2253 .has_legacy_blending = false,
2254 .pitch_align = 64,
2255 .has_powergate = false,
2256 .coupled_pm = false,
2257 .has_nvdisplay = true,
2258 .wgrps = tegra186_dc_wgrps,
2259 .num_wgrps = ARRAY_SIZE(tegra186_dc_wgrps),
2260};
2261
2262static const struct tegra_windowgroup_soc tegra194_dc_wgrps[] = {
2263 {
2264 .index = 0,
2265 .dc = 0,
2266 .windows = (const unsigned int[]) { 0 },
2267 .num_windows = 1,
2268 }, {
2269 .index = 1,
2270 .dc = 1,
2271 .windows = (const unsigned int[]) { 1 },
2272 .num_windows = 1,
2273 }, {
2274 .index = 2,
2275 .dc = 1,
2276 .windows = (const unsigned int[]) { 2 },
2277 .num_windows = 1,
2278 }, {
2279 .index = 3,
2280 .dc = 2,
2281 .windows = (const unsigned int[]) { 3 },
2282 .num_windows = 1,
2283 }, {
2284 .index = 4,
2285 .dc = 2,
2286 .windows = (const unsigned int[]) { 4 },
2287 .num_windows = 1,
2288 }, {
2289 .index = 5,
2290 .dc = 2,
2291 .windows = (const unsigned int[]) { 5 },
2292 .num_windows = 1,
2293 },
2294};
2295
2296static const struct tegra_dc_soc_info tegra194_dc_soc_info = {
2297 .supports_background_color = true,
2298 .supports_interlacing = true,
2299 .supports_cursor = true,
2300 .supports_block_linear = true,
2301 .has_legacy_blending = false,
2302 .pitch_align = 64,
2303 .has_powergate = false,
2304 .coupled_pm = false,
2305 .has_nvdisplay = true,
2306 .wgrps = tegra194_dc_wgrps,
2307 .num_wgrps = ARRAY_SIZE(tegra194_dc_wgrps),
2308};
2309
2310static const struct of_device_id tegra_dc_of_match[] = {
2311 {
2312 .compatible = "nvidia,tegra194-dc",
2313 .data = &tegra194_dc_soc_info,
2314 }, {
2315 .compatible = "nvidia,tegra186-dc",
2316 .data = &tegra186_dc_soc_info,
2317 }, {
2318 .compatible = "nvidia,tegra210-dc",
2319 .data = &tegra210_dc_soc_info,
2320 }, {
2321 .compatible = "nvidia,tegra124-dc",
2322 .data = &tegra124_dc_soc_info,
2323 }, {
2324 .compatible = "nvidia,tegra114-dc",
2325 .data = &tegra114_dc_soc_info,
2326 }, {
2327 .compatible = "nvidia,tegra30-dc",
2328 .data = &tegra30_dc_soc_info,
2329 }, {
2330 .compatible = "nvidia,tegra20-dc",
2331 .data = &tegra20_dc_soc_info,
2332 }, {
2333 /* sentinel */
2334 }
2335};
2336MODULE_DEVICE_TABLE(of, tegra_dc_of_match);
2337
2338static int tegra_dc_parse_dt(struct tegra_dc *dc)
2339{
2340 struct device_node *np;
2341 u32 value = 0;
2342 int err;
2343
2344 err = of_property_read_u32(dc->dev->of_node, "nvidia,head", &value);
2345 if (err < 0) {
2346 dev_err(dc->dev, "missing \"nvidia,head\" property\n");
2347
2348 /*
2349 * If the nvidia,head property isn't present, try to find the
2350 * correct head number by looking up the position of this
2351 * display controller's node within the device tree. Assuming
2352 * that the nodes are ordered properly in the DTS file and
2353 * that the translation into a flattened device tree blob
2354 * preserves that ordering this will actually yield the right
2355 * head number.
2356 *
2357 * If those assumptions don't hold, this will still work for
2358 * cases where only a single display controller is used.
2359 */
2360 for_each_matching_node(np, tegra_dc_of_match) {
2361 if (np == dc->dev->of_node) {
2362 of_node_put(np);
2363 break;
2364 }
2365
2366 value++;
2367 }
2368 }
2369
2370 dc->pipe = value;
2371
2372 return 0;
2373}
2374
2375static int tegra_dc_match_by_pipe(struct device *dev, const void *data)
2376{
2377 struct tegra_dc *dc = dev_get_drvdata(dev);
2378 unsigned int pipe = (unsigned long)(void *)data;
2379
2380 return dc->pipe == pipe;
2381}
2382
2383static int tegra_dc_couple(struct tegra_dc *dc)
2384{
2385 /*
2386 * On Tegra20, DC1 requires DC0 to be taken out of reset in order to
2387 * be enabled, otherwise CPU hangs on writing to CMD_DISPLAY_COMMAND /
2388 * POWER_CONTROL registers during CRTC enabling.
2389 */
2390 if (dc->soc->coupled_pm && dc->pipe == 1) {
2391 u32 flags = DL_FLAG_PM_RUNTIME | DL_FLAG_AUTOREMOVE_CONSUMER;
2392 struct device_link *link;
2393 struct device *partner;
2394
2395 partner = driver_find_device(dc->dev->driver, NULL, NULL,
2396 tegra_dc_match_by_pipe);
2397 if (!partner)
2398 return -EPROBE_DEFER;
2399
2400 link = device_link_add(dc->dev, partner, flags);
2401 if (!link) {
2402 dev_err(dc->dev, "failed to link controllers\n");
2403 return -EINVAL;
2404 }
2405
2406 dev_dbg(dc->dev, "coupled to %s\n", dev_name(partner));
2407 }
2408
2409 return 0;
2410}
2411
2412static int tegra_dc_probe(struct platform_device *pdev)
2413{
2414 struct resource *regs;
2415 struct tegra_dc *dc;
2416 int err;
2417
2418 dc = devm_kzalloc(&pdev->dev, sizeof(*dc), GFP_KERNEL);
2419 if (!dc)
2420 return -ENOMEM;
2421
2422 dc->soc = of_device_get_match_data(&pdev->dev);
2423
2424 INIT_LIST_HEAD(&dc->list);
2425 dc->dev = &pdev->dev;
2426
2427 err = tegra_dc_parse_dt(dc);
2428 if (err < 0)
2429 return err;
2430
2431 err = tegra_dc_couple(dc);
2432 if (err < 0)
2433 return err;
2434
2435 dc->clk = devm_clk_get(&pdev->dev, NULL);
2436 if (IS_ERR(dc->clk)) {
2437 dev_err(&pdev->dev, "failed to get clock\n");
2438 return PTR_ERR(dc->clk);
2439 }
2440
2441 dc->rst = devm_reset_control_get(&pdev->dev, "dc");
2442 if (IS_ERR(dc->rst)) {
2443 dev_err(&pdev->dev, "failed to get reset\n");
2444 return PTR_ERR(dc->rst);
2445 }
2446
2447 /* assert reset and disable clock */
2448 err = clk_prepare_enable(dc->clk);
2449 if (err < 0)
2450 return err;
2451
2452 usleep_range(2000, 4000);
2453
2454 err = reset_control_assert(dc->rst);
2455 if (err < 0)
2456 return err;
2457
2458 usleep_range(2000, 4000);
2459
2460 clk_disable_unprepare(dc->clk);
2461
2462 if (dc->soc->has_powergate) {
2463 if (dc->pipe == 0)
2464 dc->powergate = TEGRA_POWERGATE_DIS;
2465 else
2466 dc->powergate = TEGRA_POWERGATE_DISB;
2467
2468 tegra_powergate_power_off(dc->powergate);
2469 }
2470
2471 regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2472 dc->regs = devm_ioremap_resource(&pdev->dev, regs);
2473 if (IS_ERR(dc->regs))
2474 return PTR_ERR(dc->regs);
2475
2476 dc->irq = platform_get_irq(pdev, 0);
2477 if (dc->irq < 0) {
2478 dev_err(&pdev->dev, "failed to get IRQ\n");
2479 return -ENXIO;
2480 }
2481
2482 err = tegra_dc_rgb_probe(dc);
2483 if (err < 0 && err != -ENODEV) {
2484 dev_err(&pdev->dev, "failed to probe RGB output: %d\n", err);
2485 return err;
2486 }
2487
2488 platform_set_drvdata(pdev, dc);
2489 pm_runtime_enable(&pdev->dev);
2490
2491 INIT_LIST_HEAD(&dc->client.list);
2492 dc->client.ops = &dc_client_ops;
2493 dc->client.dev = &pdev->dev;
2494
2495 err = host1x_client_register(&dc->client);
2496 if (err < 0) {
2497 dev_err(&pdev->dev, "failed to register host1x client: %d\n",
2498 err);
2499 return err;
2500 }
2501
2502 return 0;
2503}
2504
2505static int tegra_dc_remove(struct platform_device *pdev)
2506{
2507 struct tegra_dc *dc = platform_get_drvdata(pdev);
2508 int err;
2509
2510 err = host1x_client_unregister(&dc->client);
2511 if (err < 0) {
2512 dev_err(&pdev->dev, "failed to unregister host1x client: %d\n",
2513 err);
2514 return err;
2515 }
2516
2517 err = tegra_dc_rgb_remove(dc);
2518 if (err < 0) {
2519 dev_err(&pdev->dev, "failed to remove RGB output: %d\n", err);
2520 return err;
2521 }
2522
2523 pm_runtime_disable(&pdev->dev);
2524
2525 return 0;
2526}
2527
2528#ifdef CONFIG_PM
2529static int tegra_dc_suspend(struct device *dev)
2530{
2531 struct tegra_dc *dc = dev_get_drvdata(dev);
2532 int err;
2533
2534 err = reset_control_assert(dc->rst);
2535 if (err < 0) {
2536 dev_err(dev, "failed to assert reset: %d\n", err);
2537 return err;
2538 }
2539
2540 if (dc->soc->has_powergate)
2541 tegra_powergate_power_off(dc->powergate);
2542
2543 clk_disable_unprepare(dc->clk);
2544
2545 return 0;
2546}
2547
2548static int tegra_dc_resume(struct device *dev)
2549{
2550 struct tegra_dc *dc = dev_get_drvdata(dev);
2551 int err;
2552
2553 if (dc->soc->has_powergate) {
2554 err = tegra_powergate_sequence_power_up(dc->powergate, dc->clk,
2555 dc->rst);
2556 if (err < 0) {
2557 dev_err(dev, "failed to power partition: %d\n", err);
2558 return err;
2559 }
2560 } else {
2561 err = clk_prepare_enable(dc->clk);
2562 if (err < 0) {
2563 dev_err(dev, "failed to enable clock: %d\n", err);
2564 return err;
2565 }
2566
2567 err = reset_control_deassert(dc->rst);
2568 if (err < 0) {
2569 dev_err(dev, "failed to deassert reset: %d\n", err);
2570 return err;
2571 }
2572 }
2573
2574 return 0;
2575}
2576#endif
2577
2578static const struct dev_pm_ops tegra_dc_pm_ops = {
2579 SET_RUNTIME_PM_OPS(tegra_dc_suspend, tegra_dc_resume, NULL)
2580};
2581
2582struct platform_driver tegra_dc_driver = {
2583 .driver = {
2584 .name = "tegra-dc",
2585 .of_match_table = tegra_dc_of_match,
2586 .pm = &tegra_dc_pm_ops,
2587 },
2588 .probe = tegra_dc_probe,
2589 .remove = tegra_dc_remove,
2590};