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1 | /* exynos_drm_vidi.c |
2 | * | |
3 | * Copyright (C) 2012 Samsung Electronics Co.Ltd | |
4 | * Authors: | |
5 | * Inki Dae <inki.dae@samsung.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. | |
11 | * | |
12 | */ | |
13 | #include "drmP.h" | |
14 | ||
15 | #include <linux/kernel.h> | |
16 | #include <linux/module.h> | |
17 | #include <linux/platform_device.h> | |
18 | ||
19 | #include <drm/exynos_drm.h> | |
20 | ||
21 | #include "drm_edid.h" | |
22 | #include "drm_crtc_helper.h" | |
23 | ||
24 | #include "exynos_drm_drv.h" | |
25 | #include "exynos_drm_crtc.h" | |
26 | #include "exynos_drm_encoder.h" | |
27 | ||
28 | /* vidi has totally three virtual windows. */ | |
29 | #define WINDOWS_NR 3 | |
30 | ||
31 | #define get_vidi_context(dev) platform_get_drvdata(to_platform_device(dev)) | |
32 | ||
33 | struct vidi_win_data { | |
34 | unsigned int offset_x; | |
35 | unsigned int offset_y; | |
36 | unsigned int ovl_width; | |
37 | unsigned int ovl_height; | |
38 | unsigned int fb_width; | |
39 | unsigned int fb_height; | |
40 | unsigned int bpp; | |
41 | dma_addr_t dma_addr; | |
42 | void __iomem *vaddr; | |
43 | unsigned int buf_offsize; | |
44 | unsigned int line_size; /* bytes */ | |
45 | bool enabled; | |
46 | }; | |
47 | ||
48 | struct vidi_context { | |
49 | struct exynos_drm_subdrv subdrv; | |
50 | struct drm_crtc *crtc; | |
51 | struct vidi_win_data win_data[WINDOWS_NR]; | |
52 | struct edid *raw_edid; | |
53 | unsigned int clkdiv; | |
54 | unsigned int default_win; | |
55 | unsigned long irq_flags; | |
56 | unsigned int connected; | |
57 | bool vblank_on; | |
58 | bool suspended; | |
59 | struct work_struct work; | |
60 | struct mutex lock; | |
61 | }; | |
62 | ||
63 | static const char fake_edid_info[] = { | |
64 | 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x4c, 0x2d, 0x05, 0x05, | |
65 | 0x00, 0x00, 0x00, 0x00, 0x30, 0x12, 0x01, 0x03, 0x80, 0x10, 0x09, 0x78, | |
66 | 0x0a, 0xee, 0x91, 0xa3, 0x54, 0x4c, 0x99, 0x26, 0x0f, 0x50, 0x54, 0xbd, | |
67 | 0xee, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, | |
68 | 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x66, 0x21, 0x50, 0xb0, 0x51, 0x00, | |
69 | 0x1b, 0x30, 0x40, 0x70, 0x36, 0x00, 0xa0, 0x5a, 0x00, 0x00, 0x00, 0x1e, | |
70 | 0x01, 0x1d, 0x00, 0x72, 0x51, 0xd0, 0x1e, 0x20, 0x6e, 0x28, 0x55, 0x00, | |
71 | 0xa0, 0x5a, 0x00, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x18, | |
72 | 0x4b, 0x1a, 0x44, 0x17, 0x00, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, | |
73 | 0x00, 0x00, 0x00, 0xfc, 0x00, 0x53, 0x41, 0x4d, 0x53, 0x55, 0x4e, 0x47, | |
74 | 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x01, 0xbc, 0x02, 0x03, 0x1e, 0xf1, | |
75 | 0x46, 0x84, 0x05, 0x03, 0x10, 0x20, 0x22, 0x23, 0x09, 0x07, 0x07, 0x83, | |
76 | 0x01, 0x00, 0x00, 0xe2, 0x00, 0x0f, 0x67, 0x03, 0x0c, 0x00, 0x10, 0x00, | |
77 | 0xb8, 0x2d, 0x01, 0x1d, 0x80, 0x18, 0x71, 0x1c, 0x16, 0x20, 0x58, 0x2c, | |
78 | 0x25, 0x00, 0xa0, 0x5a, 0x00, 0x00, 0x00, 0x9e, 0x8c, 0x0a, 0xd0, 0x8a, | |
79 | 0x20, 0xe0, 0x2d, 0x10, 0x10, 0x3e, 0x96, 0x00, 0xa0, 0x5a, 0x00, 0x00, | |
80 | 0x00, 0x18, 0x02, 0x3a, 0x80, 0x18, 0x71, 0x38, 0x2d, 0x40, 0x58, 0x2c, | |
81 | 0x45, 0x00, 0xa0, 0x5a, 0x00, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x00, 0x00, | |
82 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
83 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
84 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
85 | 0x00, 0x00, 0x00, 0x06 | |
86 | }; | |
87 | ||
88 | static void vidi_fake_vblank_handler(struct work_struct *work); | |
89 | ||
90 | static bool vidi_display_is_connected(struct device *dev) | |
91 | { | |
92 | struct vidi_context *ctx = get_vidi_context(dev); | |
93 | ||
94 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
95 | ||
96 | /* | |
97 | * connection request would come from user side | |
98 | * to do hotplug through specific ioctl. | |
99 | */ | |
100 | return ctx->connected ? true : false; | |
101 | } | |
102 | ||
103 | static int vidi_get_edid(struct device *dev, struct drm_connector *connector, | |
104 | u8 *edid, int len) | |
105 | { | |
106 | struct vidi_context *ctx = get_vidi_context(dev); | |
107 | struct edid *raw_edid; | |
108 | ||
109 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
110 | ||
111 | /* | |
112 | * the edid data comes from user side and it would be set | |
113 | * to ctx->raw_edid through specific ioctl. | |
114 | */ | |
115 | if (!ctx->raw_edid) { | |
116 | DRM_DEBUG_KMS("raw_edid is null.\n"); | |
117 | return -EFAULT; | |
118 | } | |
119 | ||
120 | raw_edid = kzalloc(len, GFP_KERNEL); | |
121 | if (!raw_edid) { | |
122 | DRM_DEBUG_KMS("failed to allocate raw_edid.\n"); | |
123 | return -ENOMEM; | |
124 | } | |
125 | ||
126 | memcpy(raw_edid, ctx->raw_edid, min((1 + ctx->raw_edid->extensions) | |
127 | * EDID_LENGTH, len)); | |
128 | ||
129 | /* attach the edid data to connector. */ | |
130 | connector->display_info.raw_edid = (char *)raw_edid; | |
131 | ||
132 | memcpy(edid, ctx->raw_edid, min((1 + ctx->raw_edid->extensions) | |
133 | * EDID_LENGTH, len)); | |
134 | ||
135 | return 0; | |
136 | } | |
137 | ||
138 | static void *vidi_get_panel(struct device *dev) | |
139 | { | |
140 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
141 | ||
142 | /* TODO. */ | |
143 | ||
144 | return NULL; | |
145 | } | |
146 | ||
147 | static int vidi_check_timing(struct device *dev, void *timing) | |
148 | { | |
149 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
150 | ||
151 | /* TODO. */ | |
152 | ||
153 | return 0; | |
154 | } | |
155 | ||
156 | static int vidi_display_power_on(struct device *dev, int mode) | |
157 | { | |
158 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
159 | ||
160 | /* TODO */ | |
161 | ||
162 | return 0; | |
163 | } | |
164 | ||
165 | static struct exynos_drm_display_ops vidi_display_ops = { | |
166 | .type = EXYNOS_DISPLAY_TYPE_VIDI, | |
167 | .is_connected = vidi_display_is_connected, | |
168 | .get_edid = vidi_get_edid, | |
169 | .get_panel = vidi_get_panel, | |
170 | .check_timing = vidi_check_timing, | |
171 | .power_on = vidi_display_power_on, | |
172 | }; | |
173 | ||
174 | static void vidi_dpms(struct device *subdrv_dev, int mode) | |
175 | { | |
176 | struct vidi_context *ctx = get_vidi_context(subdrv_dev); | |
177 | ||
178 | DRM_DEBUG_KMS("%s, %d\n", __FILE__, mode); | |
179 | ||
180 | mutex_lock(&ctx->lock); | |
181 | ||
182 | switch (mode) { | |
183 | case DRM_MODE_DPMS_ON: | |
184 | /* TODO. */ | |
185 | break; | |
186 | case DRM_MODE_DPMS_STANDBY: | |
187 | case DRM_MODE_DPMS_SUSPEND: | |
188 | case DRM_MODE_DPMS_OFF: | |
189 | /* TODO. */ | |
190 | break; | |
191 | default: | |
192 | DRM_DEBUG_KMS("unspecified mode %d\n", mode); | |
193 | break; | |
194 | } | |
195 | ||
196 | mutex_unlock(&ctx->lock); | |
197 | } | |
198 | ||
199 | static void vidi_apply(struct device *subdrv_dev) | |
200 | { | |
201 | struct vidi_context *ctx = get_vidi_context(subdrv_dev); | |
202 | struct exynos_drm_manager *mgr = &ctx->subdrv.manager; | |
203 | struct exynos_drm_manager_ops *mgr_ops = mgr->ops; | |
204 | struct exynos_drm_overlay_ops *ovl_ops = mgr->overlay_ops; | |
205 | struct vidi_win_data *win_data; | |
206 | int i; | |
207 | ||
208 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
209 | ||
210 | for (i = 0; i < WINDOWS_NR; i++) { | |
211 | win_data = &ctx->win_data[i]; | |
212 | if (win_data->enabled && (ovl_ops && ovl_ops->commit)) | |
213 | ovl_ops->commit(subdrv_dev, i); | |
214 | } | |
215 | ||
216 | if (mgr_ops && mgr_ops->commit) | |
217 | mgr_ops->commit(subdrv_dev); | |
218 | } | |
219 | ||
220 | static void vidi_commit(struct device *dev) | |
221 | { | |
222 | struct vidi_context *ctx = get_vidi_context(dev); | |
223 | ||
224 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
225 | ||
226 | if (ctx->suspended) | |
227 | return; | |
228 | } | |
229 | ||
230 | static int vidi_enable_vblank(struct device *dev) | |
231 | { | |
232 | struct vidi_context *ctx = get_vidi_context(dev); | |
233 | ||
234 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
235 | ||
236 | if (ctx->suspended) | |
237 | return -EPERM; | |
238 | ||
239 | if (!test_and_set_bit(0, &ctx->irq_flags)) | |
240 | ctx->vblank_on = true; | |
241 | ||
242 | return 0; | |
243 | } | |
244 | ||
245 | static void vidi_disable_vblank(struct device *dev) | |
246 | { | |
247 | struct vidi_context *ctx = get_vidi_context(dev); | |
248 | ||
249 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
250 | ||
251 | if (ctx->suspended) | |
252 | return; | |
253 | ||
254 | if (test_and_clear_bit(0, &ctx->irq_flags)) | |
255 | ctx->vblank_on = false; | |
256 | } | |
257 | ||
258 | static struct exynos_drm_manager_ops vidi_manager_ops = { | |
259 | .dpms = vidi_dpms, | |
260 | .apply = vidi_apply, | |
261 | .commit = vidi_commit, | |
262 | .enable_vblank = vidi_enable_vblank, | |
263 | .disable_vblank = vidi_disable_vblank, | |
264 | }; | |
265 | ||
266 | static void vidi_win_mode_set(struct device *dev, | |
267 | struct exynos_drm_overlay *overlay) | |
268 | { | |
269 | struct vidi_context *ctx = get_vidi_context(dev); | |
270 | struct vidi_win_data *win_data; | |
271 | int win; | |
272 | unsigned long offset; | |
273 | ||
274 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
275 | ||
276 | if (!overlay) { | |
277 | dev_err(dev, "overlay is NULL\n"); | |
278 | return; | |
279 | } | |
280 | ||
281 | win = overlay->zpos; | |
282 | if (win == DEFAULT_ZPOS) | |
283 | win = ctx->default_win; | |
284 | ||
285 | if (win < 0 || win > WINDOWS_NR) | |
286 | return; | |
287 | ||
288 | offset = overlay->fb_x * (overlay->bpp >> 3); | |
289 | offset += overlay->fb_y * overlay->pitch; | |
290 | ||
291 | DRM_DEBUG_KMS("offset = 0x%lx, pitch = %x\n", offset, overlay->pitch); | |
292 | ||
293 | win_data = &ctx->win_data[win]; | |
294 | ||
295 | win_data->offset_x = overlay->crtc_x; | |
296 | win_data->offset_y = overlay->crtc_y; | |
297 | win_data->ovl_width = overlay->crtc_width; | |
298 | win_data->ovl_height = overlay->crtc_height; | |
299 | win_data->fb_width = overlay->fb_width; | |
300 | win_data->fb_height = overlay->fb_height; | |
301 | win_data->dma_addr = overlay->dma_addr[0] + offset; | |
302 | win_data->vaddr = overlay->vaddr[0] + offset; | |
303 | win_data->bpp = overlay->bpp; | |
304 | win_data->buf_offsize = (overlay->fb_width - overlay->crtc_width) * | |
305 | (overlay->bpp >> 3); | |
306 | win_data->line_size = overlay->crtc_width * (overlay->bpp >> 3); | |
307 | ||
308 | /* | |
309 | * some parts of win_data should be transferred to user side | |
310 | * through specific ioctl. | |
311 | */ | |
312 | ||
313 | DRM_DEBUG_KMS("offset_x = %d, offset_y = %d\n", | |
314 | win_data->offset_x, win_data->offset_y); | |
315 | DRM_DEBUG_KMS("ovl_width = %d, ovl_height = %d\n", | |
316 | win_data->ovl_width, win_data->ovl_height); | |
317 | DRM_DEBUG_KMS("paddr = 0x%lx, vaddr = 0x%lx\n", | |
318 | (unsigned long)win_data->dma_addr, | |
319 | (unsigned long)win_data->vaddr); | |
320 | DRM_DEBUG_KMS("fb_width = %d, crtc_width = %d\n", | |
321 | overlay->fb_width, overlay->crtc_width); | |
322 | } | |
323 | ||
324 | static void vidi_win_commit(struct device *dev, int zpos) | |
325 | { | |
326 | struct vidi_context *ctx = get_vidi_context(dev); | |
327 | struct vidi_win_data *win_data; | |
328 | int win = zpos; | |
329 | ||
330 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
331 | ||
332 | if (ctx->suspended) | |
333 | return; | |
334 | ||
335 | if (win == DEFAULT_ZPOS) | |
336 | win = ctx->default_win; | |
337 | ||
338 | if (win < 0 || win > WINDOWS_NR) | |
339 | return; | |
340 | ||
341 | win_data = &ctx->win_data[win]; | |
342 | ||
343 | win_data->enabled = true; | |
344 | ||
345 | DRM_DEBUG_KMS("dma_addr = 0x%x\n", win_data->dma_addr); | |
346 | ||
347 | if (ctx->vblank_on) | |
348 | schedule_work(&ctx->work); | |
349 | } | |
350 | ||
351 | static void vidi_win_disable(struct device *dev, int zpos) | |
352 | { | |
353 | struct vidi_context *ctx = get_vidi_context(dev); | |
354 | struct vidi_win_data *win_data; | |
355 | int win = zpos; | |
356 | ||
357 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
358 | ||
359 | if (win == DEFAULT_ZPOS) | |
360 | win = ctx->default_win; | |
361 | ||
362 | if (win < 0 || win > WINDOWS_NR) | |
363 | return; | |
364 | ||
365 | win_data = &ctx->win_data[win]; | |
366 | win_data->enabled = false; | |
367 | ||
368 | /* TODO. */ | |
369 | } | |
370 | ||
371 | static struct exynos_drm_overlay_ops vidi_overlay_ops = { | |
372 | .mode_set = vidi_win_mode_set, | |
373 | .commit = vidi_win_commit, | |
374 | .disable = vidi_win_disable, | |
375 | }; | |
376 | ||
377 | static void vidi_finish_pageflip(struct drm_device *drm_dev, int crtc) | |
378 | { | |
379 | struct exynos_drm_private *dev_priv = drm_dev->dev_private; | |
380 | struct drm_pending_vblank_event *e, *t; | |
381 | struct timeval now; | |
382 | unsigned long flags; | |
383 | bool is_checked = false; | |
384 | ||
385 | spin_lock_irqsave(&drm_dev->event_lock, flags); | |
386 | ||
387 | list_for_each_entry_safe(e, t, &dev_priv->pageflip_event_list, | |
388 | base.link) { | |
389 | /* if event's pipe isn't same as crtc then ignore it. */ | |
390 | if (crtc != e->pipe) | |
391 | continue; | |
392 | ||
393 | is_checked = true; | |
394 | ||
395 | do_gettimeofday(&now); | |
396 | e->event.sequence = 0; | |
397 | e->event.tv_sec = now.tv_sec; | |
398 | e->event.tv_usec = now.tv_usec; | |
399 | ||
400 | list_move_tail(&e->base.link, &e->base.file_priv->event_list); | |
401 | wake_up_interruptible(&e->base.file_priv->event_wait); | |
402 | } | |
403 | ||
404 | if (is_checked) { | |
405 | /* | |
406 | * call drm_vblank_put only in case that drm_vblank_get was | |
407 | * called. | |
408 | */ | |
409 | if (atomic_read(&drm_dev->vblank_refcount[crtc]) > 0) | |
410 | drm_vblank_put(drm_dev, crtc); | |
411 | ||
412 | /* | |
413 | * don't off vblank if vblank_disable_allowed is 1, | |
414 | * because vblank would be off by timer handler. | |
415 | */ | |
416 | if (!drm_dev->vblank_disable_allowed) | |
417 | drm_vblank_off(drm_dev, crtc); | |
418 | } | |
419 | ||
420 | spin_unlock_irqrestore(&drm_dev->event_lock, flags); | |
421 | } | |
422 | ||
423 | static void vidi_fake_vblank_handler(struct work_struct *work) | |
424 | { | |
425 | struct vidi_context *ctx = container_of(work, struct vidi_context, | |
426 | work); | |
427 | struct exynos_drm_subdrv *subdrv = &ctx->subdrv; | |
428 | struct exynos_drm_manager *manager = &subdrv->manager; | |
429 | ||
430 | if (manager->pipe < 0) | |
431 | return; | |
432 | ||
433 | /* refresh rate is about 50Hz. */ | |
434 | usleep_range(16000, 20000); | |
435 | ||
436 | drm_handle_vblank(subdrv->drm_dev, manager->pipe); | |
437 | vidi_finish_pageflip(subdrv->drm_dev, manager->pipe); | |
438 | } | |
439 | ||
440 | static int vidi_subdrv_probe(struct drm_device *drm_dev, struct device *dev) | |
441 | { | |
442 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
443 | ||
444 | /* | |
445 | * enable drm irq mode. | |
446 | * - with irq_enabled = 1, we can use the vblank feature. | |
447 | * | |
448 | * P.S. note that we wouldn't use drm irq handler but | |
449 | * just specific driver own one instead because | |
450 | * drm framework supports only one irq handler. | |
451 | */ | |
452 | drm_dev->irq_enabled = 1; | |
453 | ||
454 | /* | |
455 | * with vblank_disable_allowed = 1, vblank interrupt will be disabled | |
456 | * by drm timer once a current process gives up ownership of | |
457 | * vblank event.(after drm_vblank_put function is called) | |
458 | */ | |
459 | drm_dev->vblank_disable_allowed = 1; | |
460 | ||
461 | return 0; | |
462 | } | |
463 | ||
464 | static void vidi_subdrv_remove(struct drm_device *drm_dev) | |
465 | { | |
466 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
467 | ||
468 | /* TODO. */ | |
469 | } | |
470 | ||
471 | static int vidi_power_on(struct vidi_context *ctx, bool enable) | |
472 | { | |
473 | struct exynos_drm_subdrv *subdrv = &ctx->subdrv; | |
474 | struct device *dev = subdrv->manager.dev; | |
475 | ||
476 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
477 | ||
478 | if (enable != false && enable != true) | |
479 | return -EINVAL; | |
480 | ||
481 | if (enable) { | |
482 | ctx->suspended = false; | |
483 | ||
484 | /* if vblank was enabled status, enable it again. */ | |
485 | if (test_and_clear_bit(0, &ctx->irq_flags)) | |
486 | vidi_enable_vblank(dev); | |
487 | ||
488 | vidi_apply(dev); | |
489 | } else { | |
490 | ctx->suspended = true; | |
491 | } | |
492 | ||
493 | return 0; | |
494 | } | |
495 | ||
496 | static int vidi_show_connection(struct device *dev, | |
497 | struct device_attribute *attr, char *buf) | |
498 | { | |
499 | int rc; | |
500 | struct vidi_context *ctx = get_vidi_context(dev); | |
501 | ||
502 | mutex_lock(&ctx->lock); | |
503 | ||
504 | rc = sprintf(buf, "%d\n", ctx->connected); | |
505 | ||
506 | mutex_unlock(&ctx->lock); | |
507 | ||
508 | return rc; | |
509 | } | |
510 | ||
511 | static int vidi_store_connection(struct device *dev, | |
512 | struct device_attribute *attr, | |
513 | const char *buf, size_t len) | |
514 | { | |
515 | struct vidi_context *ctx = get_vidi_context(dev); | |
516 | int ret; | |
517 | ||
518 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
519 | ||
520 | ret = kstrtoint(buf, 0, &ctx->connected); | |
521 | if (ret) | |
522 | return ret; | |
523 | ||
524 | if (ctx->connected > 1) | |
525 | return -EINVAL; | |
526 | ||
527 | DRM_DEBUG_KMS("requested connection.\n"); | |
528 | ||
529 | drm_helper_hpd_irq_event(ctx->subdrv.drm_dev); | |
530 | ||
531 | return len; | |
532 | } | |
533 | ||
534 | static DEVICE_ATTR(connection, 0644, vidi_show_connection, | |
535 | vidi_store_connection); | |
536 | ||
537 | int vidi_connection_ioctl(struct drm_device *drm_dev, void *data, | |
538 | struct drm_file *file_priv) | |
539 | { | |
540 | struct vidi_context *ctx = NULL; | |
541 | struct drm_encoder *encoder; | |
542 | struct exynos_drm_manager *manager; | |
543 | struct exynos_drm_display_ops *display_ops; | |
544 | struct drm_exynos_vidi_connection *vidi = data; | |
545 | ||
546 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
547 | ||
548 | if (!vidi) { | |
549 | DRM_DEBUG_KMS("user data for vidi is null.\n"); | |
550 | return -EINVAL; | |
551 | } | |
552 | ||
553 | if (!vidi->edid) { | |
554 | DRM_DEBUG_KMS("edid data is null.\n"); | |
555 | return -EINVAL; | |
556 | } | |
557 | ||
558 | if (vidi->connection > 1) { | |
559 | DRM_DEBUG_KMS("connection should be 0 or 1.\n"); | |
560 | return -EINVAL; | |
561 | } | |
562 | ||
563 | list_for_each_entry(encoder, &drm_dev->mode_config.encoder_list, | |
564 | head) { | |
565 | manager = exynos_drm_get_manager(encoder); | |
566 | display_ops = manager->display_ops; | |
567 | ||
568 | if (display_ops->type == EXYNOS_DISPLAY_TYPE_VIDI) { | |
569 | ctx = get_vidi_context(manager->dev); | |
570 | break; | |
571 | } | |
572 | } | |
573 | ||
574 | if (!ctx) { | |
575 | DRM_DEBUG_KMS("not found virtual device type encoder.\n"); | |
576 | return -EINVAL; | |
577 | } | |
578 | ||
579 | if (ctx->connected == vidi->connection) { | |
580 | DRM_DEBUG_KMS("same connection request.\n"); | |
581 | return -EINVAL; | |
582 | } | |
583 | ||
584 | if (vidi->connection) | |
585 | ctx->raw_edid = (struct edid *)vidi->edid; | |
586 | ||
587 | ctx->connected = vidi->connection; | |
588 | drm_helper_hpd_irq_event(ctx->subdrv.drm_dev); | |
589 | ||
590 | return 0; | |
591 | } | |
592 | ||
593 | static int __devinit vidi_probe(struct platform_device *pdev) | |
594 | { | |
595 | struct device *dev = &pdev->dev; | |
596 | struct vidi_context *ctx; | |
597 | struct exynos_drm_subdrv *subdrv; | |
598 | int ret; | |
599 | ||
600 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
601 | ||
602 | ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); | |
603 | if (!ctx) | |
604 | return -ENOMEM; | |
605 | ||
606 | ctx->default_win = 0; | |
607 | ||
608 | INIT_WORK(&ctx->work, vidi_fake_vblank_handler); | |
609 | ||
610 | /* for test */ | |
611 | ctx->raw_edid = (struct edid *)fake_edid_info; | |
612 | ||
613 | subdrv = &ctx->subdrv; | |
614 | subdrv->probe = vidi_subdrv_probe; | |
615 | subdrv->remove = vidi_subdrv_remove; | |
616 | subdrv->manager.pipe = -1; | |
617 | subdrv->manager.ops = &vidi_manager_ops; | |
618 | subdrv->manager.overlay_ops = &vidi_overlay_ops; | |
619 | subdrv->manager.display_ops = &vidi_display_ops; | |
620 | subdrv->manager.dev = dev; | |
621 | ||
622 | mutex_init(&ctx->lock); | |
623 | ||
624 | platform_set_drvdata(pdev, ctx); | |
625 | ||
626 | ret = device_create_file(&pdev->dev, &dev_attr_connection); | |
627 | if (ret < 0) | |
628 | DRM_INFO("failed to create connection sysfs.\n"); | |
629 | ||
630 | exynos_drm_subdrv_register(subdrv); | |
631 | ||
632 | return 0; | |
633 | } | |
634 | ||
635 | static int __devexit vidi_remove(struct platform_device *pdev) | |
636 | { | |
637 | struct vidi_context *ctx = platform_get_drvdata(pdev); | |
638 | ||
639 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
640 | ||
641 | exynos_drm_subdrv_unregister(&ctx->subdrv); | |
642 | ||
643 | kfree(ctx); | |
644 | ||
645 | return 0; | |
646 | } | |
647 | ||
648 | #ifdef CONFIG_PM_SLEEP | |
649 | static int vidi_suspend(struct device *dev) | |
650 | { | |
651 | struct vidi_context *ctx = get_vidi_context(dev); | |
652 | ||
653 | return vidi_power_on(ctx, false); | |
654 | } | |
655 | ||
656 | static int vidi_resume(struct device *dev) | |
657 | { | |
658 | struct vidi_context *ctx = get_vidi_context(dev); | |
659 | ||
660 | return vidi_power_on(ctx, true); | |
661 | } | |
662 | #endif | |
663 | ||
664 | static const struct dev_pm_ops vidi_pm_ops = { | |
665 | SET_SYSTEM_SLEEP_PM_OPS(vidi_suspend, vidi_resume) | |
666 | }; | |
667 | ||
668 | struct platform_driver vidi_driver = { | |
669 | .probe = vidi_probe, | |
670 | .remove = __devexit_p(vidi_remove), | |
671 | .driver = { | |
672 | .name = "exynos-drm-vidi", | |
673 | .owner = THIS_MODULE, | |
674 | .pm = &vidi_pm_ops, | |
675 | }, | |
676 | }; |