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22#include <linux/clk.h>
23#include <linux/irq.h>
24#include <linux/irqchip.h>
25#include <linux/module.h>
26#include <linux/pm_runtime.h>
27
28#include "atmel_hlcdc_dc.h"
29
30#define ATMEL_HLCDC_LAYER_IRQS_OFFSET 8
31
32static const struct atmel_hlcdc_layer_desc atmel_hlcdc_at91sam9n12_layers[] = {
33 {
34 .name = "base",
35 .formats = &atmel_hlcdc_plane_rgb_formats,
36 .regs_offset = 0x40,
37 .id = 0,
38 .type = ATMEL_HLCDC_BASE_LAYER,
39 .nconfigs = 5,
40 .layout = {
41 .xstride = { 2 },
42 .default_color = 3,
43 .general_config = 4,
44 },
45 },
46};
47
48static const struct atmel_hlcdc_dc_desc atmel_hlcdc_dc_at91sam9n12 = {
49 .min_width = 0,
50 .min_height = 0,
51 .max_width = 1280,
52 .max_height = 860,
53 .nlayers = ARRAY_SIZE(atmel_hlcdc_at91sam9n12_layers),
54 .layers = atmel_hlcdc_at91sam9n12_layers,
55};
56
57static const struct atmel_hlcdc_layer_desc atmel_hlcdc_at91sam9x5_layers[] = {
58 {
59 .name = "base",
60 .formats = &atmel_hlcdc_plane_rgb_formats,
61 .regs_offset = 0x40,
62 .id = 0,
63 .type = ATMEL_HLCDC_BASE_LAYER,
64 .nconfigs = 5,
65 .layout = {
66 .xstride = { 2 },
67 .default_color = 3,
68 .general_config = 4,
69 .disc_pos = 5,
70 .disc_size = 6,
71 },
72 },
73 {
74 .name = "overlay1",
75 .formats = &atmel_hlcdc_plane_rgb_formats,
76 .regs_offset = 0x100,
77 .id = 1,
78 .type = ATMEL_HLCDC_OVERLAY_LAYER,
79 .nconfigs = 10,
80 .layout = {
81 .pos = 2,
82 .size = 3,
83 .xstride = { 4 },
84 .pstride = { 5 },
85 .default_color = 6,
86 .chroma_key = 7,
87 .chroma_key_mask = 8,
88 .general_config = 9,
89 },
90 },
91 {
92 .name = "high-end-overlay",
93 .formats = &atmel_hlcdc_plane_rgb_and_yuv_formats,
94 .regs_offset = 0x280,
95 .id = 2,
96 .type = ATMEL_HLCDC_OVERLAY_LAYER,
97 .nconfigs = 17,
98 .layout = {
99 .pos = 2,
100 .size = 3,
101 .memsize = 4,
102 .xstride = { 5, 7 },
103 .pstride = { 6, 8 },
104 .default_color = 9,
105 .chroma_key = 10,
106 .chroma_key_mask = 11,
107 .general_config = 12,
108 .csc = 14,
109 },
110 },
111 {
112 .name = "cursor",
113 .formats = &atmel_hlcdc_plane_rgb_formats,
114 .regs_offset = 0x340,
115 .id = 3,
116 .type = ATMEL_HLCDC_CURSOR_LAYER,
117 .nconfigs = 10,
118 .max_width = 128,
119 .max_height = 128,
120 .layout = {
121 .pos = 2,
122 .size = 3,
123 .xstride = { 4 },
124 .default_color = 6,
125 .chroma_key = 7,
126 .chroma_key_mask = 8,
127 .general_config = 9,
128 },
129 },
130};
131
132static const struct atmel_hlcdc_dc_desc atmel_hlcdc_dc_at91sam9x5 = {
133 .min_width = 0,
134 .min_height = 0,
135 .max_width = 800,
136 .max_height = 600,
137 .nlayers = ARRAY_SIZE(atmel_hlcdc_at91sam9x5_layers),
138 .layers = atmel_hlcdc_at91sam9x5_layers,
139};
140
141static const struct atmel_hlcdc_layer_desc atmel_hlcdc_sama5d3_layers[] = {
142 {
143 .name = "base",
144 .formats = &atmel_hlcdc_plane_rgb_formats,
145 .regs_offset = 0x40,
146 .id = 0,
147 .type = ATMEL_HLCDC_BASE_LAYER,
148 .nconfigs = 7,
149 .layout = {
150 .xstride = { 2 },
151 .default_color = 3,
152 .general_config = 4,
153 .disc_pos = 5,
154 .disc_size = 6,
155 },
156 },
157 {
158 .name = "overlay1",
159 .formats = &atmel_hlcdc_plane_rgb_formats,
160 .regs_offset = 0x140,
161 .id = 1,
162 .type = ATMEL_HLCDC_OVERLAY_LAYER,
163 .nconfigs = 10,
164 .layout = {
165 .pos = 2,
166 .size = 3,
167 .xstride = { 4 },
168 .pstride = { 5 },
169 .default_color = 6,
170 .chroma_key = 7,
171 .chroma_key_mask = 8,
172 .general_config = 9,
173 },
174 },
175 {
176 .name = "overlay2",
177 .formats = &atmel_hlcdc_plane_rgb_formats,
178 .regs_offset = 0x240,
179 .id = 2,
180 .type = ATMEL_HLCDC_OVERLAY_LAYER,
181 .nconfigs = 10,
182 .layout = {
183 .pos = 2,
184 .size = 3,
185 .xstride = { 4 },
186 .pstride = { 5 },
187 .default_color = 6,
188 .chroma_key = 7,
189 .chroma_key_mask = 8,
190 .general_config = 9,
191 },
192 },
193 {
194 .name = "high-end-overlay",
195 .formats = &atmel_hlcdc_plane_rgb_and_yuv_formats,
196 .regs_offset = 0x340,
197 .id = 3,
198 .type = ATMEL_HLCDC_OVERLAY_LAYER,
199 .nconfigs = 42,
200 .layout = {
201 .pos = 2,
202 .size = 3,
203 .memsize = 4,
204 .xstride = { 5, 7 },
205 .pstride = { 6, 8 },
206 .default_color = 9,
207 .chroma_key = 10,
208 .chroma_key_mask = 11,
209 .general_config = 12,
210 .csc = 14,
211 },
212 },
213 {
214 .name = "cursor",
215 .formats = &atmel_hlcdc_plane_rgb_formats,
216 .regs_offset = 0x440,
217 .id = 4,
218 .type = ATMEL_HLCDC_CURSOR_LAYER,
219 .nconfigs = 10,
220 .max_width = 128,
221 .max_height = 128,
222 .layout = {
223 .pos = 2,
224 .size = 3,
225 .xstride = { 4 },
226 .pstride = { 5 },
227 .default_color = 6,
228 .chroma_key = 7,
229 .chroma_key_mask = 8,
230 .general_config = 9,
231 },
232 },
233};
234
235static const struct atmel_hlcdc_dc_desc atmel_hlcdc_dc_sama5d3 = {
236 .min_width = 0,
237 .min_height = 0,
238 .max_width = 2048,
239 .max_height = 2048,
240 .nlayers = ARRAY_SIZE(atmel_hlcdc_sama5d3_layers),
241 .layers = atmel_hlcdc_sama5d3_layers,
242};
243
244static const struct atmel_hlcdc_layer_desc atmel_hlcdc_sama5d4_layers[] = {
245 {
246 .name = "base",
247 .formats = &atmel_hlcdc_plane_rgb_formats,
248 .regs_offset = 0x40,
249 .id = 0,
250 .type = ATMEL_HLCDC_BASE_LAYER,
251 .nconfigs = 7,
252 .layout = {
253 .xstride = { 2 },
254 .default_color = 3,
255 .general_config = 4,
256 .disc_pos = 5,
257 .disc_size = 6,
258 },
259 },
260 {
261 .name = "overlay1",
262 .formats = &atmel_hlcdc_plane_rgb_formats,
263 .regs_offset = 0x140,
264 .id = 1,
265 .type = ATMEL_HLCDC_OVERLAY_LAYER,
266 .nconfigs = 10,
267 .layout = {
268 .pos = 2,
269 .size = 3,
270 .xstride = { 4 },
271 .pstride = { 5 },
272 .default_color = 6,
273 .chroma_key = 7,
274 .chroma_key_mask = 8,
275 .general_config = 9,
276 },
277 },
278 {
279 .name = "overlay2",
280 .formats = &atmel_hlcdc_plane_rgb_formats,
281 .regs_offset = 0x240,
282 .id = 2,
283 .type = ATMEL_HLCDC_OVERLAY_LAYER,
284 .nconfigs = 10,
285 .layout = {
286 .pos = 2,
287 .size = 3,
288 .xstride = { 4 },
289 .pstride = { 5 },
290 .default_color = 6,
291 .chroma_key = 7,
292 .chroma_key_mask = 8,
293 .general_config = 9,
294 },
295 },
296 {
297 .name = "high-end-overlay",
298 .formats = &atmel_hlcdc_plane_rgb_and_yuv_formats,
299 .regs_offset = 0x340,
300 .id = 3,
301 .type = ATMEL_HLCDC_OVERLAY_LAYER,
302 .nconfigs = 42,
303 .layout = {
304 .pos = 2,
305 .size = 3,
306 .memsize = 4,
307 .xstride = { 5, 7 },
308 .pstride = { 6, 8 },
309 .default_color = 9,
310 .chroma_key = 10,
311 .chroma_key_mask = 11,
312 .general_config = 12,
313 .csc = 14,
314 },
315 },
316};
317
318static const struct atmel_hlcdc_dc_desc atmel_hlcdc_dc_sama5d4 = {
319 .min_width = 0,
320 .min_height = 0,
321 .max_width = 2048,
322 .max_height = 2048,
323 .nlayers = ARRAY_SIZE(atmel_hlcdc_sama5d4_layers),
324 .layers = atmel_hlcdc_sama5d4_layers,
325};
326static const struct of_device_id atmel_hlcdc_of_match[] = {
327 {
328 .compatible = "atmel,at91sam9n12-hlcdc",
329 .data = &atmel_hlcdc_dc_at91sam9n12,
330 },
331 {
332 .compatible = "atmel,at91sam9x5-hlcdc",
333 .data = &atmel_hlcdc_dc_at91sam9x5,
334 },
335 {
336 .compatible = "atmel,sama5d2-hlcdc",
337 .data = &atmel_hlcdc_dc_sama5d4,
338 },
339 {
340 .compatible = "atmel,sama5d3-hlcdc",
341 .data = &atmel_hlcdc_dc_sama5d3,
342 },
343 {
344 .compatible = "atmel,sama5d4-hlcdc",
345 .data = &atmel_hlcdc_dc_sama5d4,
346 },
347 { },
348};
349MODULE_DEVICE_TABLE(of, atmel_hlcdc_of_match);
350
351int atmel_hlcdc_dc_mode_valid(struct atmel_hlcdc_dc *dc,
352 struct drm_display_mode *mode)
353{
354 int vfront_porch = mode->vsync_start - mode->vdisplay;
355 int vback_porch = mode->vtotal - mode->vsync_end;
356 int vsync_len = mode->vsync_end - mode->vsync_start;
357 int hfront_porch = mode->hsync_start - mode->hdisplay;
358 int hback_porch = mode->htotal - mode->hsync_end;
359 int hsync_len = mode->hsync_end - mode->hsync_start;
360
361 if (hsync_len > 0x40 || hsync_len < 1)
362 return MODE_HSYNC;
363
364 if (vsync_len > 0x40 || vsync_len < 1)
365 return MODE_VSYNC;
366
367 if (hfront_porch > 0x200 || hfront_porch < 1 ||
368 hback_porch > 0x200 || hback_porch < 1 ||
369 mode->hdisplay < 1)
370 return MODE_H_ILLEGAL;
371
372 if (vfront_porch > 0x40 || vfront_porch < 1 ||
373 vback_porch > 0x40 || vback_porch < 0 ||
374 mode->vdisplay < 1)
375 return MODE_V_ILLEGAL;
376
377 return MODE_OK;
378}
379
380static irqreturn_t atmel_hlcdc_dc_irq_handler(int irq, void *data)
381{
382 struct drm_device *dev = data;
383 struct atmel_hlcdc_dc *dc = dev->dev_private;
384 unsigned long status;
385 unsigned int imr, isr;
386 int i;
387
388 regmap_read(dc->hlcdc->regmap, ATMEL_HLCDC_IMR, &imr);
389 regmap_read(dc->hlcdc->regmap, ATMEL_HLCDC_ISR, &isr);
390 status = imr & isr;
391 if (!status)
392 return IRQ_NONE;
393
394 if (status & ATMEL_HLCDC_SOF)
395 atmel_hlcdc_crtc_irq(dc->crtc);
396
397 for (i = 0; i < ATMEL_HLCDC_MAX_LAYERS; i++) {
398 struct atmel_hlcdc_layer *layer = dc->layers[i];
399
400 if (!(ATMEL_HLCDC_LAYER_STATUS(i) & status) || !layer)
401 continue;
402
403 atmel_hlcdc_layer_irq(layer);
404 }
405
406 return IRQ_HANDLED;
407}
408
409static struct drm_framebuffer *atmel_hlcdc_fb_create(struct drm_device *dev,
410 struct drm_file *file_priv, const struct drm_mode_fb_cmd2 *mode_cmd)
411{
412 return drm_fb_cma_create(dev, file_priv, mode_cmd);
413}
414
415static void atmel_hlcdc_fb_output_poll_changed(struct drm_device *dev)
416{
417 struct atmel_hlcdc_dc *dc = dev->dev_private;
418
419 if (dc->fbdev) {
420 drm_fbdev_cma_hotplug_event(dc->fbdev);
421 } else {
422 dc->fbdev = drm_fbdev_cma_init(dev, 24,
423 dev->mode_config.num_crtc,
424 dev->mode_config.num_connector);
425 if (IS_ERR(dc->fbdev))
426 dc->fbdev = NULL;
427 }
428}
429
430static const struct drm_mode_config_funcs mode_config_funcs = {
431 .fb_create = atmel_hlcdc_fb_create,
432 .output_poll_changed = atmel_hlcdc_fb_output_poll_changed,
433 .atomic_check = drm_atomic_helper_check,
434 .atomic_commit = drm_atomic_helper_commit,
435};
436
437static int atmel_hlcdc_dc_modeset_init(struct drm_device *dev)
438{
439 struct atmel_hlcdc_dc *dc = dev->dev_private;
440 struct atmel_hlcdc_planes *planes;
441 int ret;
442 int i;
443
444 drm_mode_config_init(dev);
445
446 ret = atmel_hlcdc_create_outputs(dev);
447 if (ret) {
448 dev_err(dev->dev, "failed to create panel: %d\n", ret);
449 return ret;
450 }
451
452 planes = atmel_hlcdc_create_planes(dev);
453 if (IS_ERR(planes)) {
454 dev_err(dev->dev, "failed to create planes\n");
455 return PTR_ERR(planes);
456 }
457
458 dc->planes = planes;
459
460 dc->layers[planes->primary->layer.desc->id] =
461 &planes->primary->layer;
462
463 if (planes->cursor)
464 dc->layers[planes->cursor->layer.desc->id] =
465 &planes->cursor->layer;
466
467 for (i = 0; i < planes->noverlays; i++)
468 dc->layers[planes->overlays[i]->layer.desc->id] =
469 &planes->overlays[i]->layer;
470
471 ret = atmel_hlcdc_crtc_create(dev);
472 if (ret) {
473 dev_err(dev->dev, "failed to create crtc\n");
474 return ret;
475 }
476
477 dev->mode_config.min_width = dc->desc->min_width;
478 dev->mode_config.min_height = dc->desc->min_height;
479 dev->mode_config.max_width = dc->desc->max_width;
480 dev->mode_config.max_height = dc->desc->max_height;
481 dev->mode_config.funcs = &mode_config_funcs;
482
483 return 0;
484}
485
486static int atmel_hlcdc_dc_load(struct drm_device *dev)
487{
488 struct platform_device *pdev = to_platform_device(dev->dev);
489 const struct of_device_id *match;
490 struct atmel_hlcdc_dc *dc;
491 int ret;
492
493 match = of_match_node(atmel_hlcdc_of_match, dev->dev->parent->of_node);
494 if (!match) {
495 dev_err(&pdev->dev, "invalid compatible string\n");
496 return -ENODEV;
497 }
498
499 if (!match->data) {
500 dev_err(&pdev->dev, "invalid hlcdc description\n");
501 return -EINVAL;
502 }
503
504 dc = devm_kzalloc(dev->dev, sizeof(*dc), GFP_KERNEL);
505 if (!dc)
506 return -ENOMEM;
507
508 dc->wq = alloc_ordered_workqueue("atmel-hlcdc-dc", 0);
509 if (!dc->wq)
510 return -ENOMEM;
511
512 dc->desc = match->data;
513 dc->hlcdc = dev_get_drvdata(dev->dev->parent);
514 dev->dev_private = dc;
515
516 ret = clk_prepare_enable(dc->hlcdc->periph_clk);
517 if (ret) {
518 dev_err(dev->dev, "failed to enable periph_clk\n");
519 goto err_destroy_wq;
520 }
521
522 pm_runtime_enable(dev->dev);
523
524 ret = drm_vblank_init(dev, 1);
525 if (ret < 0) {
526 dev_err(dev->dev, "failed to initialize vblank\n");
527 goto err_periph_clk_disable;
528 }
529
530 ret = atmel_hlcdc_dc_modeset_init(dev);
531 if (ret < 0) {
532 dev_err(dev->dev, "failed to initialize mode setting\n");
533 goto err_periph_clk_disable;
534 }
535
536 drm_mode_config_reset(dev);
537
538 pm_runtime_get_sync(dev->dev);
539 ret = drm_irq_install(dev, dc->hlcdc->irq);
540 pm_runtime_put_sync(dev->dev);
541 if (ret < 0) {
542 dev_err(dev->dev, "failed to install IRQ handler\n");
543 goto err_periph_clk_disable;
544 }
545
546 platform_set_drvdata(pdev, dev);
547
548 drm_kms_helper_poll_init(dev);
549
550
551 drm_helper_hpd_irq_event(dev);
552
553 return 0;
554
555err_periph_clk_disable:
556 pm_runtime_disable(dev->dev);
557 clk_disable_unprepare(dc->hlcdc->periph_clk);
558
559err_destroy_wq:
560 destroy_workqueue(dc->wq);
561
562 return ret;
563}
564
565static void atmel_hlcdc_dc_unload(struct drm_device *dev)
566{
567 struct atmel_hlcdc_dc *dc = dev->dev_private;
568
569 if (dc->fbdev)
570 drm_fbdev_cma_fini(dc->fbdev);
571 flush_workqueue(dc->wq);
572 drm_kms_helper_poll_fini(dev);
573 drm_mode_config_cleanup(dev);
574 drm_vblank_cleanup(dev);
575
576 pm_runtime_get_sync(dev->dev);
577 drm_irq_uninstall(dev);
578 pm_runtime_put_sync(dev->dev);
579
580 dev->dev_private = NULL;
581
582 pm_runtime_disable(dev->dev);
583 clk_disable_unprepare(dc->hlcdc->periph_clk);
584 destroy_workqueue(dc->wq);
585}
586
587static int atmel_hlcdc_dc_connector_plug_all(struct drm_device *dev)
588{
589 struct drm_connector *connector, *failed;
590 int ret;
591
592 mutex_lock(&dev->mode_config.mutex);
593 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
594 ret = drm_connector_register(connector);
595 if (ret) {
596 failed = connector;
597 goto err;
598 }
599 }
600 mutex_unlock(&dev->mode_config.mutex);
601 return 0;
602
603err:
604 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
605 if (failed == connector)
606 break;
607
608 drm_connector_unregister(connector);
609 }
610 mutex_unlock(&dev->mode_config.mutex);
611
612 return ret;
613}
614
615static void atmel_hlcdc_dc_connector_unplug_all(struct drm_device *dev)
616{
617 mutex_lock(&dev->mode_config.mutex);
618 drm_connector_unplug_all(dev);
619 mutex_unlock(&dev->mode_config.mutex);
620}
621
622static void atmel_hlcdc_dc_lastclose(struct drm_device *dev)
623{
624 struct atmel_hlcdc_dc *dc = dev->dev_private;
625
626 drm_fbdev_cma_restore_mode(dc->fbdev);
627}
628
629static int atmel_hlcdc_dc_irq_postinstall(struct drm_device *dev)
630{
631 struct atmel_hlcdc_dc *dc = dev->dev_private;
632 unsigned int cfg = 0;
633 int i;
634
635
636 for (i = 0; i < ATMEL_HLCDC_MAX_LAYERS; i++) {
637 if (dc->layers[i])
638 cfg |= ATMEL_HLCDC_LAYER_STATUS(i);
639 }
640
641 regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IER, cfg);
642
643 return 0;
644}
645
646static void atmel_hlcdc_dc_irq_uninstall(struct drm_device *dev)
647{
648 struct atmel_hlcdc_dc *dc = dev->dev_private;
649 unsigned int isr;
650
651 regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IDR, 0xffffffff);
652 regmap_read(dc->hlcdc->regmap, ATMEL_HLCDC_ISR, &isr);
653}
654
655static int atmel_hlcdc_dc_enable_vblank(struct drm_device *dev,
656 unsigned int pipe)
657{
658 struct atmel_hlcdc_dc *dc = dev->dev_private;
659
660
661 regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IER, ATMEL_HLCDC_SOF);
662
663 return 0;
664}
665
666static void atmel_hlcdc_dc_disable_vblank(struct drm_device *dev,
667 unsigned int pipe)
668{
669 struct atmel_hlcdc_dc *dc = dev->dev_private;
670
671 regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IDR, ATMEL_HLCDC_SOF);
672}
673
674static const struct file_operations fops = {
675 .owner = THIS_MODULE,
676 .open = drm_open,
677 .release = drm_release,
678 .unlocked_ioctl = drm_ioctl,
679#ifdef CONFIG_COMPAT
680 .compat_ioctl = drm_compat_ioctl,
681#endif
682 .poll = drm_poll,
683 .read = drm_read,
684 .llseek = no_llseek,
685 .mmap = drm_gem_cma_mmap,
686};
687
688static struct drm_driver atmel_hlcdc_dc_driver = {
689 .driver_features = DRIVER_HAVE_IRQ | DRIVER_GEM |
690 DRIVER_MODESET | DRIVER_PRIME |
691 DRIVER_ATOMIC,
692 .lastclose = atmel_hlcdc_dc_lastclose,
693 .irq_handler = atmel_hlcdc_dc_irq_handler,
694 .irq_preinstall = atmel_hlcdc_dc_irq_uninstall,
695 .irq_postinstall = atmel_hlcdc_dc_irq_postinstall,
696 .irq_uninstall = atmel_hlcdc_dc_irq_uninstall,
697 .get_vblank_counter = drm_vblank_no_hw_counter,
698 .enable_vblank = atmel_hlcdc_dc_enable_vblank,
699 .disable_vblank = atmel_hlcdc_dc_disable_vblank,
700 .gem_free_object = drm_gem_cma_free_object,
701 .gem_vm_ops = &drm_gem_cma_vm_ops,
702 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
703 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
704 .gem_prime_import = drm_gem_prime_import,
705 .gem_prime_export = drm_gem_prime_export,
706 .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
707 .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
708 .gem_prime_vmap = drm_gem_cma_prime_vmap,
709 .gem_prime_vunmap = drm_gem_cma_prime_vunmap,
710 .gem_prime_mmap = drm_gem_cma_prime_mmap,
711 .dumb_create = drm_gem_cma_dumb_create,
712 .dumb_map_offset = drm_gem_cma_dumb_map_offset,
713 .dumb_destroy = drm_gem_dumb_destroy,
714 .fops = &fops,
715 .name = "atmel-hlcdc",
716 .desc = "Atmel HLCD Controller DRM",
717 .date = "20141504",
718 .major = 1,
719 .minor = 0,
720};
721
722static int atmel_hlcdc_dc_drm_probe(struct platform_device *pdev)
723{
724 struct drm_device *ddev;
725 int ret;
726
727 ddev = drm_dev_alloc(&atmel_hlcdc_dc_driver, &pdev->dev);
728 if (!ddev)
729 return -ENOMEM;
730
731 ret = atmel_hlcdc_dc_load(ddev);
732 if (ret)
733 goto err_unref;
734
735 ret = drm_dev_register(ddev, 0);
736 if (ret)
737 goto err_unload;
738
739 ret = atmel_hlcdc_dc_connector_plug_all(ddev);
740 if (ret)
741 goto err_unregister;
742
743 return 0;
744
745err_unregister:
746 drm_dev_unregister(ddev);
747
748err_unload:
749 atmel_hlcdc_dc_unload(ddev);
750
751err_unref:
752 drm_dev_unref(ddev);
753
754 return ret;
755}
756
757static int atmel_hlcdc_dc_drm_remove(struct platform_device *pdev)
758{
759 struct drm_device *ddev = platform_get_drvdata(pdev);
760
761 atmel_hlcdc_dc_connector_unplug_all(ddev);
762 drm_dev_unregister(ddev);
763 atmel_hlcdc_dc_unload(ddev);
764 drm_dev_unref(ddev);
765
766 return 0;
767}
768
769#ifdef CONFIG_PM_SLEEP
770static int atmel_hlcdc_dc_drm_suspend(struct device *dev)
771{
772 struct drm_device *drm_dev = dev_get_drvdata(dev);
773 struct drm_crtc *crtc;
774
775 if (pm_runtime_suspended(dev))
776 return 0;
777
778 drm_modeset_lock_all(drm_dev);
779 list_for_each_entry(crtc, &drm_dev->mode_config.crtc_list, head)
780 atmel_hlcdc_crtc_suspend(crtc);
781 drm_modeset_unlock_all(drm_dev);
782 return 0;
783}
784
785static int atmel_hlcdc_dc_drm_resume(struct device *dev)
786{
787 struct drm_device *drm_dev = dev_get_drvdata(dev);
788 struct drm_crtc *crtc;
789
790 if (pm_runtime_suspended(dev))
791 return 0;
792
793 drm_modeset_lock_all(drm_dev);
794 list_for_each_entry(crtc, &drm_dev->mode_config.crtc_list, head)
795 atmel_hlcdc_crtc_resume(crtc);
796 drm_modeset_unlock_all(drm_dev);
797 return 0;
798}
799#endif
800
801static SIMPLE_DEV_PM_OPS(atmel_hlcdc_dc_drm_pm_ops,
802 atmel_hlcdc_dc_drm_suspend, atmel_hlcdc_dc_drm_resume);
803
804static const struct of_device_id atmel_hlcdc_dc_of_match[] = {
805 { .compatible = "atmel,hlcdc-display-controller" },
806 { },
807};
808
809static struct platform_driver atmel_hlcdc_dc_platform_driver = {
810 .probe = atmel_hlcdc_dc_drm_probe,
811 .remove = atmel_hlcdc_dc_drm_remove,
812 .driver = {
813 .name = "atmel-hlcdc-display-controller",
814 .pm = &atmel_hlcdc_dc_drm_pm_ops,
815 .of_match_table = atmel_hlcdc_dc_of_match,
816 },
817};
818module_platform_driver(atmel_hlcdc_dc_platform_driver);
819
820MODULE_AUTHOR("Jean-Jacques Hiblot <jjhiblot@traphandler.com>");
821MODULE_AUTHOR("Boris Brezillon <boris.brezillon@free-electrons.com>");
822MODULE_DESCRIPTION("Atmel HLCDC Display Controller DRM Driver");
823MODULE_LICENSE("GPL");
824MODULE_ALIAS("platform:atmel-hlcdc-dc");
825
