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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2014 Traphandler
4 * Copyright (C) 2014 Free Electrons
5 * Copyright (C) 2014 Atmel
6 *
7 * Author: Jean-Jacques Hiblot <jjhiblot@traphandler.com>
8 * Author: Boris BREZILLON <boris.brezillon@free-electrons.com>
9 */
10
11#include <linux/clk.h>
12#include <linux/irq.h>
13#include <linux/irqchip.h>
14#include <linux/mfd/atmel-hlcdc.h>
15#include <linux/module.h>
16#include <linux/pm_runtime.h>
17#include <linux/platform_device.h>
18
19#include <drm/clients/drm_client_setup.h>
20#include <drm/drm_atomic.h>
21#include <drm/drm_atomic_helper.h>
22#include <drm/drm_drv.h>
23#include <drm/drm_fbdev_dma.h>
24#include <drm/drm_fourcc.h>
25#include <drm/drm_gem_dma_helper.h>
26#include <drm/drm_gem_framebuffer_helper.h>
27#include <drm/drm_module.h>
28#include <drm/drm_probe_helper.h>
29#include <drm/drm_vblank.h>
30
31#include "atmel_hlcdc_dc.h"
32
33#define ATMEL_HLCDC_LAYER_IRQS_OFFSET 8
34
35static const struct atmel_hlcdc_layer_desc atmel_hlcdc_at91sam9n12_layers[] = {
36 {
37 .name = "base",
38 .formats = &atmel_hlcdc_plane_rgb_formats,
39 .regs_offset = 0x40,
40 .id = 0,
41 .type = ATMEL_HLCDC_BASE_LAYER,
42 .cfgs_offset = 0x2c,
43 .layout = {
44 .xstride = { 2 },
45 .default_color = 3,
46 .general_config = 4,
47 },
48 .clut_offset = 0x400,
49 },
50};
51
52static const struct atmel_hlcdc_dc_desc atmel_hlcdc_dc_at91sam9n12 = {
53 .min_width = 0,
54 .min_height = 0,
55 .max_width = 1280,
56 .max_height = 860,
57 .max_spw = 0x3f,
58 .max_vpw = 0x3f,
59 .max_hpw = 0xff,
60 .conflicting_output_formats = true,
61 .nlayers = ARRAY_SIZE(atmel_hlcdc_at91sam9n12_layers),
62 .layers = atmel_hlcdc_at91sam9n12_layers,
63 .ops = &atmel_hlcdc_ops,
64};
65
66static const struct atmel_hlcdc_layer_desc atmel_hlcdc_at91sam9x5_layers[] = {
67 {
68 .name = "base",
69 .formats = &atmel_hlcdc_plane_rgb_formats,
70 .regs_offset = 0x40,
71 .id = 0,
72 .type = ATMEL_HLCDC_BASE_LAYER,
73 .cfgs_offset = 0x2c,
74 .layout = {
75 .xstride = { 2 },
76 .default_color = 3,
77 .general_config = 4,
78 .disc_pos = 5,
79 .disc_size = 6,
80 },
81 .clut_offset = 0x400,
82 },
83 {
84 .name = "overlay1",
85 .formats = &atmel_hlcdc_plane_rgb_formats,
86 .regs_offset = 0x100,
87 .id = 1,
88 .type = ATMEL_HLCDC_OVERLAY_LAYER,
89 .cfgs_offset = 0x2c,
90 .layout = {
91 .pos = 2,
92 .size = 3,
93 .xstride = { 4 },
94 .pstride = { 5 },
95 .default_color = 6,
96 .chroma_key = 7,
97 .chroma_key_mask = 8,
98 .general_config = 9,
99 },
100 .clut_offset = 0x800,
101 },
102 {
103 .name = "high-end-overlay",
104 .formats = &atmel_hlcdc_plane_rgb_and_yuv_formats,
105 .regs_offset = 0x280,
106 .id = 2,
107 .type = ATMEL_HLCDC_OVERLAY_LAYER,
108 .cfgs_offset = 0x4c,
109 .layout = {
110 .pos = 2,
111 .size = 3,
112 .memsize = 4,
113 .xstride = { 5, 7 },
114 .pstride = { 6, 8 },
115 .default_color = 9,
116 .chroma_key = 10,
117 .chroma_key_mask = 11,
118 .general_config = 12,
119 .scaler_config = 13,
120 .csc = 14,
121 },
122 .clut_offset = 0x1000,
123 },
124 {
125 .name = "cursor",
126 .formats = &atmel_hlcdc_plane_rgb_formats,
127 .regs_offset = 0x340,
128 .id = 3,
129 .type = ATMEL_HLCDC_CURSOR_LAYER,
130 .max_width = 128,
131 .max_height = 128,
132 .cfgs_offset = 0x2c,
133 .layout = {
134 .pos = 2,
135 .size = 3,
136 .xstride = { 4 },
137 .default_color = 6,
138 .chroma_key = 7,
139 .chroma_key_mask = 8,
140 .general_config = 9,
141 },
142 .clut_offset = 0x1400,
143 },
144};
145
146static const struct atmel_hlcdc_dc_desc atmel_hlcdc_dc_at91sam9x5 = {
147 .min_width = 0,
148 .min_height = 0,
149 .max_width = 800,
150 .max_height = 600,
151 .max_spw = 0x3f,
152 .max_vpw = 0x3f,
153 .max_hpw = 0xff,
154 .conflicting_output_formats = true,
155 .nlayers = ARRAY_SIZE(atmel_hlcdc_at91sam9x5_layers),
156 .layers = atmel_hlcdc_at91sam9x5_layers,
157 .ops = &atmel_hlcdc_ops,
158};
159
160static const struct atmel_hlcdc_layer_desc atmel_hlcdc_sama5d3_layers[] = {
161 {
162 .name = "base",
163 .formats = &atmel_hlcdc_plane_rgb_formats,
164 .regs_offset = 0x40,
165 .id = 0,
166 .type = ATMEL_HLCDC_BASE_LAYER,
167 .cfgs_offset = 0x2c,
168 .layout = {
169 .xstride = { 2 },
170 .default_color = 3,
171 .general_config = 4,
172 .disc_pos = 5,
173 .disc_size = 6,
174 },
175 .clut_offset = 0x600,
176 },
177 {
178 .name = "overlay1",
179 .formats = &atmel_hlcdc_plane_rgb_formats,
180 .regs_offset = 0x140,
181 .id = 1,
182 .type = ATMEL_HLCDC_OVERLAY_LAYER,
183 .cfgs_offset = 0x2c,
184 .layout = {
185 .pos = 2,
186 .size = 3,
187 .xstride = { 4 },
188 .pstride = { 5 },
189 .default_color = 6,
190 .chroma_key = 7,
191 .chroma_key_mask = 8,
192 .general_config = 9,
193 },
194 .clut_offset = 0xa00,
195 },
196 {
197 .name = "overlay2",
198 .formats = &atmel_hlcdc_plane_rgb_formats,
199 .regs_offset = 0x240,
200 .id = 2,
201 .type = ATMEL_HLCDC_OVERLAY_LAYER,
202 .cfgs_offset = 0x2c,
203 .layout = {
204 .pos = 2,
205 .size = 3,
206 .xstride = { 4 },
207 .pstride = { 5 },
208 .default_color = 6,
209 .chroma_key = 7,
210 .chroma_key_mask = 8,
211 .general_config = 9,
212 },
213 .clut_offset = 0xe00,
214 },
215 {
216 .name = "high-end-overlay",
217 .formats = &atmel_hlcdc_plane_rgb_and_yuv_formats,
218 .regs_offset = 0x340,
219 .id = 3,
220 .type = ATMEL_HLCDC_OVERLAY_LAYER,
221 .cfgs_offset = 0x4c,
222 .layout = {
223 .pos = 2,
224 .size = 3,
225 .memsize = 4,
226 .xstride = { 5, 7 },
227 .pstride = { 6, 8 },
228 .default_color = 9,
229 .chroma_key = 10,
230 .chroma_key_mask = 11,
231 .general_config = 12,
232 .scaler_config = 13,
233 .phicoeffs = {
234 .x = 17,
235 .y = 33,
236 },
237 .csc = 14,
238 },
239 .clut_offset = 0x1200,
240 },
241 {
242 .name = "cursor",
243 .formats = &atmel_hlcdc_plane_rgb_formats,
244 .regs_offset = 0x440,
245 .id = 4,
246 .type = ATMEL_HLCDC_CURSOR_LAYER,
247 .max_width = 128,
248 .max_height = 128,
249 .cfgs_offset = 0x2c,
250 .layout = {
251 .pos = 2,
252 .size = 3,
253 .xstride = { 4 },
254 .pstride = { 5 },
255 .default_color = 6,
256 .chroma_key = 7,
257 .chroma_key_mask = 8,
258 .general_config = 9,
259 .scaler_config = 13,
260 },
261 .clut_offset = 0x1600,
262 },
263};
264
265static const struct atmel_hlcdc_dc_desc atmel_hlcdc_dc_sama5d3 = {
266 .min_width = 0,
267 .min_height = 0,
268 .max_width = 2048,
269 .max_height = 2048,
270 .max_spw = 0x3f,
271 .max_vpw = 0x3f,
272 .max_hpw = 0x1ff,
273 .conflicting_output_formats = true,
274 .nlayers = ARRAY_SIZE(atmel_hlcdc_sama5d3_layers),
275 .layers = atmel_hlcdc_sama5d3_layers,
276 .ops = &atmel_hlcdc_ops,
277};
278
279static const struct atmel_hlcdc_layer_desc atmel_hlcdc_sama5d4_layers[] = {
280 {
281 .name = "base",
282 .formats = &atmel_hlcdc_plane_rgb_formats,
283 .regs_offset = 0x40,
284 .id = 0,
285 .type = ATMEL_HLCDC_BASE_LAYER,
286 .cfgs_offset = 0x2c,
287 .layout = {
288 .xstride = { 2 },
289 .default_color = 3,
290 .general_config = 4,
291 .disc_pos = 5,
292 .disc_size = 6,
293 },
294 .clut_offset = 0x600,
295 },
296 {
297 .name = "overlay1",
298 .formats = &atmel_hlcdc_plane_rgb_formats,
299 .regs_offset = 0x140,
300 .id = 1,
301 .type = ATMEL_HLCDC_OVERLAY_LAYER,
302 .cfgs_offset = 0x2c,
303 .layout = {
304 .pos = 2,
305 .size = 3,
306 .xstride = { 4 },
307 .pstride = { 5 },
308 .default_color = 6,
309 .chroma_key = 7,
310 .chroma_key_mask = 8,
311 .general_config = 9,
312 },
313 .clut_offset = 0xa00,
314 },
315 {
316 .name = "overlay2",
317 .formats = &atmel_hlcdc_plane_rgb_formats,
318 .regs_offset = 0x240,
319 .id = 2,
320 .type = ATMEL_HLCDC_OVERLAY_LAYER,
321 .cfgs_offset = 0x2c,
322 .layout = {
323 .pos = 2,
324 .size = 3,
325 .xstride = { 4 },
326 .pstride = { 5 },
327 .default_color = 6,
328 .chroma_key = 7,
329 .chroma_key_mask = 8,
330 .general_config = 9,
331 },
332 .clut_offset = 0xe00,
333 },
334 {
335 .name = "high-end-overlay",
336 .formats = &atmel_hlcdc_plane_rgb_and_yuv_formats,
337 .regs_offset = 0x340,
338 .id = 3,
339 .type = ATMEL_HLCDC_OVERLAY_LAYER,
340 .cfgs_offset = 0x4c,
341 .layout = {
342 .pos = 2,
343 .size = 3,
344 .memsize = 4,
345 .xstride = { 5, 7 },
346 .pstride = { 6, 8 },
347 .default_color = 9,
348 .chroma_key = 10,
349 .chroma_key_mask = 11,
350 .general_config = 12,
351 .scaler_config = 13,
352 .phicoeffs = {
353 .x = 17,
354 .y = 33,
355 },
356 .csc = 14,
357 },
358 .clut_offset = 0x1200,
359 },
360};
361
362static const struct atmel_hlcdc_dc_desc atmel_hlcdc_dc_sama5d4 = {
363 .min_width = 0,
364 .min_height = 0,
365 .max_width = 2048,
366 .max_height = 2048,
367 .max_spw = 0xff,
368 .max_vpw = 0xff,
369 .max_hpw = 0x3ff,
370 .nlayers = ARRAY_SIZE(atmel_hlcdc_sama5d4_layers),
371 .layers = atmel_hlcdc_sama5d4_layers,
372 .ops = &atmel_hlcdc_ops,
373};
374
375static const struct atmel_hlcdc_layer_desc atmel_hlcdc_sam9x60_layers[] = {
376 {
377 .name = "base",
378 .formats = &atmel_hlcdc_plane_rgb_formats,
379 .regs_offset = 0x60,
380 .id = 0,
381 .type = ATMEL_HLCDC_BASE_LAYER,
382 .cfgs_offset = 0x2c,
383 .layout = {
384 .xstride = { 2 },
385 .default_color = 3,
386 .general_config = 4,
387 .disc_pos = 5,
388 .disc_size = 6,
389 },
390 .clut_offset = 0x600,
391 },
392 {
393 .name = "overlay1",
394 .formats = &atmel_hlcdc_plane_rgb_formats,
395 .regs_offset = 0x160,
396 .id = 1,
397 .type = ATMEL_HLCDC_OVERLAY_LAYER,
398 .cfgs_offset = 0x2c,
399 .layout = {
400 .pos = 2,
401 .size = 3,
402 .xstride = { 4 },
403 .pstride = { 5 },
404 .default_color = 6,
405 .chroma_key = 7,
406 .chroma_key_mask = 8,
407 .general_config = 9,
408 },
409 .clut_offset = 0xa00,
410 },
411 {
412 .name = "overlay2",
413 .formats = &atmel_hlcdc_plane_rgb_formats,
414 .regs_offset = 0x260,
415 .id = 2,
416 .type = ATMEL_HLCDC_OVERLAY_LAYER,
417 .cfgs_offset = 0x2c,
418 .layout = {
419 .pos = 2,
420 .size = 3,
421 .xstride = { 4 },
422 .pstride = { 5 },
423 .default_color = 6,
424 .chroma_key = 7,
425 .chroma_key_mask = 8,
426 .general_config = 9,
427 },
428 .clut_offset = 0xe00,
429 },
430 {
431 .name = "high-end-overlay",
432 .formats = &atmel_hlcdc_plane_rgb_and_yuv_formats,
433 .regs_offset = 0x360,
434 .id = 3,
435 .type = ATMEL_HLCDC_OVERLAY_LAYER,
436 .cfgs_offset = 0x4c,
437 .layout = {
438 .pos = 2,
439 .size = 3,
440 .memsize = 4,
441 .xstride = { 5, 7 },
442 .pstride = { 6, 8 },
443 .default_color = 9,
444 .chroma_key = 10,
445 .chroma_key_mask = 11,
446 .general_config = 12,
447 .scaler_config = 13,
448 .phicoeffs = {
449 .x = 17,
450 .y = 33,
451 },
452 .csc = 14,
453 },
454 .clut_offset = 0x1200,
455 },
456};
457
458static const struct atmel_hlcdc_dc_desc atmel_hlcdc_dc_sam9x60 = {
459 .min_width = 0,
460 .min_height = 0,
461 .max_width = 2048,
462 .max_height = 2048,
463 .max_spw = 0xff,
464 .max_vpw = 0xff,
465 .max_hpw = 0x3ff,
466 .fixed_clksrc = true,
467 .nlayers = ARRAY_SIZE(atmel_hlcdc_sam9x60_layers),
468 .layers = atmel_hlcdc_sam9x60_layers,
469 .ops = &atmel_hlcdc_ops,
470};
471
472static const struct atmel_hlcdc_layer_desc atmel_xlcdc_sam9x75_layers[] = {
473 {
474 .name = "base",
475 .formats = &atmel_hlcdc_plane_rgb_formats,
476 .regs_offset = 0x60,
477 .id = 0,
478 .type = ATMEL_HLCDC_BASE_LAYER,
479 .cfgs_offset = 0x1c,
480 .layout = {
481 .xstride = { 2 },
482 .default_color = 3,
483 .general_config = 4,
484 .disc_pos = 5,
485 .disc_size = 6,
486 },
487 .clut_offset = 0x700,
488 },
489 {
490 .name = "overlay1",
491 .formats = &atmel_hlcdc_plane_rgb_formats,
492 .regs_offset = 0x160,
493 .id = 1,
494 .type = ATMEL_HLCDC_OVERLAY_LAYER,
495 .cfgs_offset = 0x1c,
496 .layout = {
497 .pos = 2,
498 .size = 3,
499 .xstride = { 4 },
500 .pstride = { 5 },
501 .default_color = 6,
502 .chroma_key = 7,
503 .chroma_key_mask = 8,
504 .general_config = 9,
505 },
506 .clut_offset = 0xb00,
507 },
508 {
509 .name = "overlay2",
510 .formats = &atmel_hlcdc_plane_rgb_formats,
511 .regs_offset = 0x260,
512 .id = 2,
513 .type = ATMEL_HLCDC_OVERLAY_LAYER,
514 .cfgs_offset = 0x1c,
515 .layout = {
516 .pos = 2,
517 .size = 3,
518 .xstride = { 4 },
519 .pstride = { 5 },
520 .default_color = 6,
521 .chroma_key = 7,
522 .chroma_key_mask = 8,
523 .general_config = 9,
524 },
525 .clut_offset = 0xf00,
526 },
527 {
528 .name = "high-end-overlay",
529 .formats = &atmel_hlcdc_plane_rgb_and_yuv_formats,
530 .regs_offset = 0x360,
531 .id = 3,
532 .type = ATMEL_HLCDC_OVERLAY_LAYER,
533 .cfgs_offset = 0x30,
534 .layout = {
535 .pos = 2,
536 .size = 3,
537 .memsize = 4,
538 .xstride = { 5, 7 },
539 .pstride = { 6, 8 },
540 .default_color = 9,
541 .chroma_key = 10,
542 .chroma_key_mask = 11,
543 .general_config = 12,
544 .csc = 16,
545 .scaler_config = 23,
546 .vxs_config = 30,
547 .hxs_config = 31,
548 },
549 .clut_offset = 0x1300,
550 },
551};
552
553static const struct atmel_hlcdc_dc_desc atmel_xlcdc_dc_sam9x75 = {
554 .min_width = 0,
555 .min_height = 0,
556 .max_width = 2048,
557 .max_height = 2048,
558 .max_spw = 0x3ff,
559 .max_vpw = 0x3ff,
560 .max_hpw = 0x3ff,
561 .fixed_clksrc = true,
562 .is_xlcdc = true,
563 .nlayers = ARRAY_SIZE(atmel_xlcdc_sam9x75_layers),
564 .layers = atmel_xlcdc_sam9x75_layers,
565 .ops = &atmel_xlcdc_ops,
566};
567
568static const struct of_device_id atmel_hlcdc_of_match[] = {
569 {
570 .compatible = "atmel,at91sam9n12-hlcdc",
571 .data = &atmel_hlcdc_dc_at91sam9n12,
572 },
573 {
574 .compatible = "atmel,at91sam9x5-hlcdc",
575 .data = &atmel_hlcdc_dc_at91sam9x5,
576 },
577 {
578 .compatible = "atmel,sama5d2-hlcdc",
579 .data = &atmel_hlcdc_dc_sama5d4,
580 },
581 {
582 .compatible = "atmel,sama5d3-hlcdc",
583 .data = &atmel_hlcdc_dc_sama5d3,
584 },
585 {
586 .compatible = "atmel,sama5d4-hlcdc",
587 .data = &atmel_hlcdc_dc_sama5d4,
588 },
589 {
590 .compatible = "microchip,sam9x60-hlcdc",
591 .data = &atmel_hlcdc_dc_sam9x60,
592 },
593 {
594 .compatible = "microchip,sam9x75-xlcdc",
595 .data = &atmel_xlcdc_dc_sam9x75,
596 },
597 { /* sentinel */ },
598};
599MODULE_DEVICE_TABLE(of, atmel_hlcdc_of_match);
600
601enum drm_mode_status
602atmel_hlcdc_dc_mode_valid(struct atmel_hlcdc_dc *dc,
603 const struct drm_display_mode *mode)
604{
605 int vfront_porch = mode->vsync_start - mode->vdisplay;
606 int vback_porch = mode->vtotal - mode->vsync_end;
607 int vsync_len = mode->vsync_end - mode->vsync_start;
608 int hfront_porch = mode->hsync_start - mode->hdisplay;
609 int hback_porch = mode->htotal - mode->hsync_end;
610 int hsync_len = mode->hsync_end - mode->hsync_start;
611
612 if (hsync_len > dc->desc->max_spw + 1 || hsync_len < 1)
613 return MODE_HSYNC;
614
615 if (vsync_len > dc->desc->max_spw + 1 || vsync_len < 1)
616 return MODE_VSYNC;
617
618 if (hfront_porch > dc->desc->max_hpw + 1 || hfront_porch < 1 ||
619 hback_porch > dc->desc->max_hpw + 1 || hback_porch < 1 ||
620 mode->hdisplay < 1)
621 return MODE_H_ILLEGAL;
622
623 if (vfront_porch > dc->desc->max_vpw + 1 || vfront_porch < 1 ||
624 vback_porch > dc->desc->max_vpw || vback_porch < 0 ||
625 mode->vdisplay < 1)
626 return MODE_V_ILLEGAL;
627
628 return MODE_OK;
629}
630
631static void atmel_hlcdc_layer_irq(struct atmel_hlcdc_layer *layer)
632{
633 if (!layer)
634 return;
635
636 if (layer->desc->type == ATMEL_HLCDC_BASE_LAYER ||
637 layer->desc->type == ATMEL_HLCDC_OVERLAY_LAYER ||
638 layer->desc->type == ATMEL_HLCDC_CURSOR_LAYER)
639 atmel_hlcdc_plane_irq(atmel_hlcdc_layer_to_plane(layer));
640}
641
642static irqreturn_t atmel_hlcdc_dc_irq_handler(int irq, void *data)
643{
644 struct drm_device *dev = data;
645 struct atmel_hlcdc_dc *dc = dev->dev_private;
646 unsigned long status;
647 unsigned int imr, isr;
648 int i;
649
650 regmap_read(dc->hlcdc->regmap, ATMEL_HLCDC_IMR, &imr);
651 regmap_read(dc->hlcdc->regmap, ATMEL_HLCDC_ISR, &isr);
652 status = imr & isr;
653 if (!status)
654 return IRQ_NONE;
655
656 if (status & ATMEL_HLCDC_SOF)
657 atmel_hlcdc_crtc_irq(dc->crtc);
658
659 for (i = 0; i < ATMEL_HLCDC_MAX_LAYERS; i++) {
660 if (ATMEL_HLCDC_LAYER_STATUS(i) & status)
661 atmel_hlcdc_layer_irq(dc->layers[i]);
662 }
663
664 return IRQ_HANDLED;
665}
666
667static void atmel_hlcdc_dc_irq_postinstall(struct drm_device *dev)
668{
669 struct atmel_hlcdc_dc *dc = dev->dev_private;
670 unsigned int cfg = 0;
671 int i;
672
673 /* Enable interrupts on activated layers */
674 for (i = 0; i < ATMEL_HLCDC_MAX_LAYERS; i++) {
675 if (dc->layers[i])
676 cfg |= ATMEL_HLCDC_LAYER_STATUS(i);
677 }
678
679 regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IER, cfg);
680}
681
682static void atmel_hlcdc_dc_irq_disable(struct drm_device *dev)
683{
684 struct atmel_hlcdc_dc *dc = dev->dev_private;
685 unsigned int isr;
686
687 regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IDR, 0xffffffff);
688 regmap_read(dc->hlcdc->regmap, ATMEL_HLCDC_ISR, &isr);
689}
690
691static int atmel_hlcdc_dc_irq_install(struct drm_device *dev, unsigned int irq)
692{
693 int ret;
694
695 atmel_hlcdc_dc_irq_disable(dev);
696
697 ret = devm_request_irq(dev->dev, irq, atmel_hlcdc_dc_irq_handler, 0,
698 dev->driver->name, dev);
699 if (ret)
700 return ret;
701
702 atmel_hlcdc_dc_irq_postinstall(dev);
703
704 return 0;
705}
706
707static void atmel_hlcdc_dc_irq_uninstall(struct drm_device *dev)
708{
709 atmel_hlcdc_dc_irq_disable(dev);
710}
711
712static const struct drm_mode_config_funcs mode_config_funcs = {
713 .fb_create = drm_gem_fb_create,
714 .atomic_check = drm_atomic_helper_check,
715 .atomic_commit = drm_atomic_helper_commit,
716};
717
718static int atmel_hlcdc_dc_modeset_init(struct drm_device *dev)
719{
720 struct atmel_hlcdc_dc *dc = dev->dev_private;
721 int ret;
722
723 drm_mode_config_init(dev);
724
725 ret = atmel_hlcdc_create_outputs(dev);
726 if (ret) {
727 dev_err(dev->dev, "failed to create HLCDC outputs: %d\n", ret);
728 return ret;
729 }
730
731 ret = atmel_hlcdc_create_planes(dev);
732 if (ret) {
733 dev_err(dev->dev, "failed to create planes: %d\n", ret);
734 return ret;
735 }
736
737 ret = atmel_hlcdc_crtc_create(dev);
738 if (ret) {
739 dev_err(dev->dev, "failed to create crtc\n");
740 return ret;
741 }
742
743 dev->mode_config.min_width = dc->desc->min_width;
744 dev->mode_config.min_height = dc->desc->min_height;
745 dev->mode_config.max_width = dc->desc->max_width;
746 dev->mode_config.max_height = dc->desc->max_height;
747 dev->mode_config.funcs = &mode_config_funcs;
748 dev->mode_config.async_page_flip = true;
749
750 return 0;
751}
752
753static int atmel_hlcdc_dc_load(struct drm_device *dev)
754{
755 struct platform_device *pdev = to_platform_device(dev->dev);
756 const struct of_device_id *match;
757 struct atmel_hlcdc_dc *dc;
758 int ret;
759
760 match = of_match_node(atmel_hlcdc_of_match, dev->dev->parent->of_node);
761 if (!match) {
762 dev_err(&pdev->dev, "invalid compatible string\n");
763 return -ENODEV;
764 }
765
766 if (!match->data) {
767 dev_err(&pdev->dev, "invalid hlcdc description\n");
768 return -EINVAL;
769 }
770
771 dc = devm_kzalloc(dev->dev, sizeof(*dc), GFP_KERNEL);
772 if (!dc)
773 return -ENOMEM;
774
775 dc->desc = match->data;
776 dc->hlcdc = dev_get_drvdata(dev->dev->parent);
777 dev->dev_private = dc;
778
779 ret = clk_prepare_enable(dc->hlcdc->periph_clk);
780 if (ret) {
781 dev_err(dev->dev, "failed to enable periph_clk\n");
782 return ret;
783 }
784
785 pm_runtime_enable(dev->dev);
786
787 ret = drm_vblank_init(dev, 1);
788 if (ret < 0) {
789 dev_err(dev->dev, "failed to initialize vblank\n");
790 goto err_periph_clk_disable;
791 }
792
793 ret = atmel_hlcdc_dc_modeset_init(dev);
794 if (ret < 0) {
795 dev_err(dev->dev, "failed to initialize mode setting\n");
796 goto err_periph_clk_disable;
797 }
798
799 drm_mode_config_reset(dev);
800
801 pm_runtime_get_sync(dev->dev);
802 ret = atmel_hlcdc_dc_irq_install(dev, dc->hlcdc->irq);
803 pm_runtime_put_sync(dev->dev);
804 if (ret < 0) {
805 dev_err(dev->dev, "failed to install IRQ handler\n");
806 goto err_periph_clk_disable;
807 }
808
809 platform_set_drvdata(pdev, dev);
810
811 drm_kms_helper_poll_init(dev);
812
813 return 0;
814
815err_periph_clk_disable:
816 pm_runtime_disable(dev->dev);
817 clk_disable_unprepare(dc->hlcdc->periph_clk);
818
819 return ret;
820}
821
822static void atmel_hlcdc_dc_unload(struct drm_device *dev)
823{
824 struct atmel_hlcdc_dc *dc = dev->dev_private;
825
826 drm_kms_helper_poll_fini(dev);
827 drm_atomic_helper_shutdown(dev);
828 drm_mode_config_cleanup(dev);
829
830 pm_runtime_get_sync(dev->dev);
831 atmel_hlcdc_dc_irq_uninstall(dev);
832 pm_runtime_put_sync(dev->dev);
833
834 dev->dev_private = NULL;
835
836 pm_runtime_disable(dev->dev);
837 clk_disable_unprepare(dc->hlcdc->periph_clk);
838}
839
840DEFINE_DRM_GEM_DMA_FOPS(fops);
841
842static const struct drm_driver atmel_hlcdc_dc_driver = {
843 .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
844 DRM_GEM_DMA_DRIVER_OPS,
845 DRM_FBDEV_DMA_DRIVER_OPS,
846 .fops = &fops,
847 .name = "atmel-hlcdc",
848 .desc = "Atmel HLCD Controller DRM",
849 .major = 1,
850 .minor = 0,
851};
852
853static int atmel_hlcdc_dc_drm_probe(struct platform_device *pdev)
854{
855 struct drm_device *ddev;
856 int ret;
857
858 ddev = drm_dev_alloc(&atmel_hlcdc_dc_driver, &pdev->dev);
859 if (IS_ERR(ddev))
860 return PTR_ERR(ddev);
861
862 ret = atmel_hlcdc_dc_load(ddev);
863 if (ret)
864 goto err_put;
865
866 ret = drm_dev_register(ddev, 0);
867 if (ret)
868 goto err_unload;
869
870 drm_client_setup_with_fourcc(ddev, DRM_FORMAT_RGB888);
871
872 return 0;
873
874err_unload:
875 atmel_hlcdc_dc_unload(ddev);
876
877err_put:
878 drm_dev_put(ddev);
879
880 return ret;
881}
882
883static void atmel_hlcdc_dc_drm_remove(struct platform_device *pdev)
884{
885 struct drm_device *ddev = platform_get_drvdata(pdev);
886
887 drm_dev_unregister(ddev);
888 atmel_hlcdc_dc_unload(ddev);
889 drm_dev_put(ddev);
890}
891
892static void atmel_hlcdc_dc_drm_shutdown(struct platform_device *pdev)
893{
894 drm_atomic_helper_shutdown(platform_get_drvdata(pdev));
895}
896
897static int atmel_hlcdc_dc_drm_suspend(struct device *dev)
898{
899 struct drm_device *drm_dev = dev_get_drvdata(dev);
900 struct atmel_hlcdc_dc *dc = drm_dev->dev_private;
901 struct regmap *regmap = dc->hlcdc->regmap;
902 struct drm_atomic_state *state;
903
904 state = drm_atomic_helper_suspend(drm_dev);
905 if (IS_ERR(state))
906 return PTR_ERR(state);
907
908 dc->suspend.state = state;
909
910 regmap_read(regmap, ATMEL_HLCDC_IMR, &dc->suspend.imr);
911 regmap_write(regmap, ATMEL_HLCDC_IDR, dc->suspend.imr);
912 clk_disable_unprepare(dc->hlcdc->periph_clk);
913
914 return 0;
915}
916
917static int atmel_hlcdc_dc_drm_resume(struct device *dev)
918{
919 struct drm_device *drm_dev = dev_get_drvdata(dev);
920 struct atmel_hlcdc_dc *dc = drm_dev->dev_private;
921
922 clk_prepare_enable(dc->hlcdc->periph_clk);
923 regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IER, dc->suspend.imr);
924
925 return drm_atomic_helper_resume(drm_dev, dc->suspend.state);
926}
927
928static DEFINE_SIMPLE_DEV_PM_OPS(atmel_hlcdc_dc_drm_pm_ops,
929 atmel_hlcdc_dc_drm_suspend,
930 atmel_hlcdc_dc_drm_resume);
931
932static const struct of_device_id atmel_hlcdc_dc_of_match[] = {
933 { .compatible = "atmel,hlcdc-display-controller" },
934 { },
935};
936
937static struct platform_driver atmel_hlcdc_dc_platform_driver = {
938 .probe = atmel_hlcdc_dc_drm_probe,
939 .remove = atmel_hlcdc_dc_drm_remove,
940 .shutdown = atmel_hlcdc_dc_drm_shutdown,
941 .driver = {
942 .name = "atmel-hlcdc-display-controller",
943 .pm = pm_sleep_ptr(&atmel_hlcdc_dc_drm_pm_ops),
944 .of_match_table = atmel_hlcdc_dc_of_match,
945 },
946};
947drm_module_platform_driver(atmel_hlcdc_dc_platform_driver);
948
949MODULE_AUTHOR("Jean-Jacques Hiblot <jjhiblot@traphandler.com>");
950MODULE_AUTHOR("Boris Brezillon <boris.brezillon@free-electrons.com>");
951MODULE_DESCRIPTION("Atmel HLCDC Display Controller DRM Driver");
952MODULE_LICENSE("GPL");
953MODULE_ALIAS("platform:atmel-hlcdc-dc");
Linux 6.x block layer and io_uring tree(s)