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b73d1230 ID |
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 | */ | |
760285e7 | 13 | #include <drm/drmP.h> |
b73d1230 ID |
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 | ||
760285e7 DH |
21 | #include <drm/drm_edid.h> |
22 | #include <drm/drm_crtc_helper.h> | |
b73d1230 ID |
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; | |
b73d1230 ID |
42 | unsigned int buf_offsize; |
43 | unsigned int line_size; /* bytes */ | |
44 | bool enabled; | |
45 | }; | |
46 | ||
47 | struct vidi_context { | |
48 | struct exynos_drm_subdrv subdrv; | |
49 | struct drm_crtc *crtc; | |
50 | struct vidi_win_data win_data[WINDOWS_NR]; | |
51 | struct edid *raw_edid; | |
52 | unsigned int clkdiv; | |
53 | unsigned int default_win; | |
54 | unsigned long irq_flags; | |
55 | unsigned int connected; | |
56 | bool vblank_on; | |
57 | bool suspended; | |
291257cf | 58 | bool direct_vblank; |
b73d1230 ID |
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 | ||
b73d1230 ID |
88 | static bool vidi_display_is_connected(struct device *dev) |
89 | { | |
90 | struct vidi_context *ctx = get_vidi_context(dev); | |
91 | ||
b73d1230 ID |
92 | /* |
93 | * connection request would come from user side | |
94 | * to do hotplug through specific ioctl. | |
95 | */ | |
96 | return ctx->connected ? true : false; | |
97 | } | |
98 | ||
9c08e4ba RS |
99 | static struct edid *vidi_get_edid(struct device *dev, |
100 | struct drm_connector *connector) | |
b73d1230 ID |
101 | { |
102 | struct vidi_context *ctx = get_vidi_context(dev); | |
9c08e4ba RS |
103 | struct edid *edid; |
104 | int edid_len; | |
b73d1230 | 105 | |
b73d1230 ID |
106 | /* |
107 | * the edid data comes from user side and it would be set | |
108 | * to ctx->raw_edid through specific ioctl. | |
109 | */ | |
110 | if (!ctx->raw_edid) { | |
111 | DRM_DEBUG_KMS("raw_edid is null.\n"); | |
9c08e4ba | 112 | return ERR_PTR(-EFAULT); |
b73d1230 ID |
113 | } |
114 | ||
9c08e4ba | 115 | edid_len = (1 + ctx->raw_edid->extensions) * EDID_LENGTH; |
e2779e16 | 116 | edid = kmemdup(ctx->raw_edid, edid_len, GFP_KERNEL); |
9c08e4ba RS |
117 | if (!edid) { |
118 | DRM_DEBUG_KMS("failed to allocate edid\n"); | |
119 | return ERR_PTR(-ENOMEM); | |
120 | } | |
b73d1230 | 121 | |
9c08e4ba | 122 | return edid; |
b73d1230 ID |
123 | } |
124 | ||
125 | static void *vidi_get_panel(struct device *dev) | |
126 | { | |
b73d1230 ID |
127 | /* TODO. */ |
128 | ||
129 | return NULL; | |
130 | } | |
131 | ||
16844fb1 | 132 | static int vidi_check_mode(struct device *dev, struct drm_display_mode *mode) |
b73d1230 | 133 | { |
b73d1230 ID |
134 | /* TODO. */ |
135 | ||
136 | return 0; | |
137 | } | |
138 | ||
139 | static int vidi_display_power_on(struct device *dev, int mode) | |
140 | { | |
b73d1230 ID |
141 | /* TODO */ |
142 | ||
143 | return 0; | |
144 | } | |
145 | ||
146 | static struct exynos_drm_display_ops vidi_display_ops = { | |
147 | .type = EXYNOS_DISPLAY_TYPE_VIDI, | |
148 | .is_connected = vidi_display_is_connected, | |
149 | .get_edid = vidi_get_edid, | |
150 | .get_panel = vidi_get_panel, | |
16844fb1 | 151 | .check_mode = vidi_check_mode, |
b73d1230 ID |
152 | .power_on = vidi_display_power_on, |
153 | }; | |
154 | ||
155 | static void vidi_dpms(struct device *subdrv_dev, int mode) | |
156 | { | |
157 | struct vidi_context *ctx = get_vidi_context(subdrv_dev); | |
158 | ||
bca34c9a | 159 | DRM_DEBUG_KMS("%d\n", mode); |
b73d1230 ID |
160 | |
161 | mutex_lock(&ctx->lock); | |
162 | ||
163 | switch (mode) { | |
164 | case DRM_MODE_DPMS_ON: | |
165 | /* TODO. */ | |
166 | break; | |
167 | case DRM_MODE_DPMS_STANDBY: | |
168 | case DRM_MODE_DPMS_SUSPEND: | |
169 | case DRM_MODE_DPMS_OFF: | |
170 | /* TODO. */ | |
171 | break; | |
172 | default: | |
173 | DRM_DEBUG_KMS("unspecified mode %d\n", mode); | |
174 | break; | |
175 | } | |
176 | ||
177 | mutex_unlock(&ctx->lock); | |
178 | } | |
179 | ||
180 | static void vidi_apply(struct device *subdrv_dev) | |
181 | { | |
182 | struct vidi_context *ctx = get_vidi_context(subdrv_dev); | |
677e84c1 | 183 | struct exynos_drm_manager *mgr = ctx->subdrv.manager; |
b73d1230 ID |
184 | struct exynos_drm_manager_ops *mgr_ops = mgr->ops; |
185 | struct exynos_drm_overlay_ops *ovl_ops = mgr->overlay_ops; | |
186 | struct vidi_win_data *win_data; | |
187 | int i; | |
188 | ||
b73d1230 ID |
189 | for (i = 0; i < WINDOWS_NR; i++) { |
190 | win_data = &ctx->win_data[i]; | |
191 | if (win_data->enabled && (ovl_ops && ovl_ops->commit)) | |
192 | ovl_ops->commit(subdrv_dev, i); | |
193 | } | |
194 | ||
195 | if (mgr_ops && mgr_ops->commit) | |
196 | mgr_ops->commit(subdrv_dev); | |
197 | } | |
198 | ||
199 | static void vidi_commit(struct device *dev) | |
200 | { | |
201 | struct vidi_context *ctx = get_vidi_context(dev); | |
202 | ||
b73d1230 ID |
203 | if (ctx->suspended) |
204 | return; | |
205 | } | |
206 | ||
207 | static int vidi_enable_vblank(struct device *dev) | |
208 | { | |
209 | struct vidi_context *ctx = get_vidi_context(dev); | |
210 | ||
b73d1230 ID |
211 | if (ctx->suspended) |
212 | return -EPERM; | |
213 | ||
214 | if (!test_and_set_bit(0, &ctx->irq_flags)) | |
215 | ctx->vblank_on = true; | |
216 | ||
291257cf ID |
217 | ctx->direct_vblank = true; |
218 | ||
219 | /* | |
220 | * in case of page flip request, vidi_finish_pageflip function | |
221 | * will not be called because direct_vblank is true and then | |
222 | * that function will be called by overlay_ops->commit callback | |
223 | */ | |
224 | schedule_work(&ctx->work); | |
225 | ||
b73d1230 ID |
226 | return 0; |
227 | } | |
228 | ||
229 | static void vidi_disable_vblank(struct device *dev) | |
230 | { | |
231 | struct vidi_context *ctx = get_vidi_context(dev); | |
232 | ||
b73d1230 ID |
233 | if (ctx->suspended) |
234 | return; | |
235 | ||
236 | if (test_and_clear_bit(0, &ctx->irq_flags)) | |
237 | ctx->vblank_on = false; | |
238 | } | |
239 | ||
240 | static struct exynos_drm_manager_ops vidi_manager_ops = { | |
241 | .dpms = vidi_dpms, | |
242 | .apply = vidi_apply, | |
243 | .commit = vidi_commit, | |
244 | .enable_vblank = vidi_enable_vblank, | |
245 | .disable_vblank = vidi_disable_vblank, | |
246 | }; | |
247 | ||
248 | static void vidi_win_mode_set(struct device *dev, | |
249 | struct exynos_drm_overlay *overlay) | |
250 | { | |
251 | struct vidi_context *ctx = get_vidi_context(dev); | |
252 | struct vidi_win_data *win_data; | |
253 | int win; | |
254 | unsigned long offset; | |
255 | ||
b73d1230 ID |
256 | if (!overlay) { |
257 | dev_err(dev, "overlay is NULL\n"); | |
258 | return; | |
259 | } | |
260 | ||
261 | win = overlay->zpos; | |
262 | if (win == DEFAULT_ZPOS) | |
263 | win = ctx->default_win; | |
264 | ||
a7f98d6a | 265 | if (win < 0 || win >= WINDOWS_NR) |
b73d1230 ID |
266 | return; |
267 | ||
268 | offset = overlay->fb_x * (overlay->bpp >> 3); | |
269 | offset += overlay->fb_y * overlay->pitch; | |
270 | ||
271 | DRM_DEBUG_KMS("offset = 0x%lx, pitch = %x\n", offset, overlay->pitch); | |
272 | ||
273 | win_data = &ctx->win_data[win]; | |
274 | ||
275 | win_data->offset_x = overlay->crtc_x; | |
276 | win_data->offset_y = overlay->crtc_y; | |
277 | win_data->ovl_width = overlay->crtc_width; | |
278 | win_data->ovl_height = overlay->crtc_height; | |
279 | win_data->fb_width = overlay->fb_width; | |
280 | win_data->fb_height = overlay->fb_height; | |
281 | win_data->dma_addr = overlay->dma_addr[0] + offset; | |
b73d1230 ID |
282 | win_data->bpp = overlay->bpp; |
283 | win_data->buf_offsize = (overlay->fb_width - overlay->crtc_width) * | |
284 | (overlay->bpp >> 3); | |
285 | win_data->line_size = overlay->crtc_width * (overlay->bpp >> 3); | |
286 | ||
287 | /* | |
288 | * some parts of win_data should be transferred to user side | |
289 | * through specific ioctl. | |
290 | */ | |
291 | ||
292 | DRM_DEBUG_KMS("offset_x = %d, offset_y = %d\n", | |
293 | win_data->offset_x, win_data->offset_y); | |
294 | DRM_DEBUG_KMS("ovl_width = %d, ovl_height = %d\n", | |
295 | win_data->ovl_width, win_data->ovl_height); | |
ddd8e959 | 296 | DRM_DEBUG_KMS("paddr = 0x%lx\n", (unsigned long)win_data->dma_addr); |
b73d1230 ID |
297 | DRM_DEBUG_KMS("fb_width = %d, crtc_width = %d\n", |
298 | overlay->fb_width, overlay->crtc_width); | |
299 | } | |
300 | ||
301 | static void vidi_win_commit(struct device *dev, int zpos) | |
302 | { | |
303 | struct vidi_context *ctx = get_vidi_context(dev); | |
304 | struct vidi_win_data *win_data; | |
305 | int win = zpos; | |
306 | ||
b73d1230 ID |
307 | if (ctx->suspended) |
308 | return; | |
309 | ||
310 | if (win == DEFAULT_ZPOS) | |
311 | win = ctx->default_win; | |
312 | ||
a7f98d6a | 313 | if (win < 0 || win >= WINDOWS_NR) |
b73d1230 ID |
314 | return; |
315 | ||
316 | win_data = &ctx->win_data[win]; | |
317 | ||
318 | win_data->enabled = true; | |
319 | ||
320 | DRM_DEBUG_KMS("dma_addr = 0x%x\n", win_data->dma_addr); | |
321 | ||
322 | if (ctx->vblank_on) | |
323 | schedule_work(&ctx->work); | |
324 | } | |
325 | ||
326 | static void vidi_win_disable(struct device *dev, int zpos) | |
327 | { | |
328 | struct vidi_context *ctx = get_vidi_context(dev); | |
329 | struct vidi_win_data *win_data; | |
330 | int win = zpos; | |
331 | ||
b73d1230 ID |
332 | if (win == DEFAULT_ZPOS) |
333 | win = ctx->default_win; | |
334 | ||
a7f98d6a | 335 | if (win < 0 || win >= WINDOWS_NR) |
b73d1230 ID |
336 | return; |
337 | ||
338 | win_data = &ctx->win_data[win]; | |
339 | win_data->enabled = false; | |
340 | ||
341 | /* TODO. */ | |
342 | } | |
343 | ||
344 | static struct exynos_drm_overlay_ops vidi_overlay_ops = { | |
345 | .mode_set = vidi_win_mode_set, | |
346 | .commit = vidi_win_commit, | |
347 | .disable = vidi_win_disable, | |
348 | }; | |
349 | ||
677e84c1 JS |
350 | static struct exynos_drm_manager vidi_manager = { |
351 | .pipe = -1, | |
352 | .ops = &vidi_manager_ops, | |
353 | .overlay_ops = &vidi_overlay_ops, | |
354 | .display_ops = &vidi_display_ops, | |
355 | }; | |
356 | ||
b73d1230 ID |
357 | static void vidi_fake_vblank_handler(struct work_struct *work) |
358 | { | |
359 | struct vidi_context *ctx = container_of(work, struct vidi_context, | |
360 | work); | |
361 | struct exynos_drm_subdrv *subdrv = &ctx->subdrv; | |
677e84c1 | 362 | struct exynos_drm_manager *manager = subdrv->manager; |
b73d1230 ID |
363 | |
364 | if (manager->pipe < 0) | |
365 | return; | |
366 | ||
367 | /* refresh rate is about 50Hz. */ | |
368 | usleep_range(16000, 20000); | |
369 | ||
291257cf ID |
370 | mutex_lock(&ctx->lock); |
371 | ||
372 | if (ctx->direct_vblank) { | |
373 | drm_handle_vblank(subdrv->drm_dev, manager->pipe); | |
374 | ctx->direct_vblank = false; | |
375 | mutex_unlock(&ctx->lock); | |
376 | return; | |
377 | } | |
378 | ||
379 | mutex_unlock(&ctx->lock); | |
380 | ||
663d8766 | 381 | exynos_drm_crtc_finish_pageflip(subdrv->drm_dev, manager->pipe); |
b73d1230 ID |
382 | } |
383 | ||
384 | static int vidi_subdrv_probe(struct drm_device *drm_dev, struct device *dev) | |
385 | { | |
b73d1230 ID |
386 | /* |
387 | * enable drm irq mode. | |
388 | * - with irq_enabled = 1, we can use the vblank feature. | |
389 | * | |
390 | * P.S. note that we wouldn't use drm irq handler but | |
391 | * just specific driver own one instead because | |
392 | * drm framework supports only one irq handler. | |
393 | */ | |
394 | drm_dev->irq_enabled = 1; | |
395 | ||
396 | /* | |
397 | * with vblank_disable_allowed = 1, vblank interrupt will be disabled | |
398 | * by drm timer once a current process gives up ownership of | |
399 | * vblank event.(after drm_vblank_put function is called) | |
400 | */ | |
401 | drm_dev->vblank_disable_allowed = 1; | |
402 | ||
403 | return 0; | |
404 | } | |
405 | ||
29cb6025 | 406 | static void vidi_subdrv_remove(struct drm_device *drm_dev, struct device *dev) |
b73d1230 | 407 | { |
b73d1230 ID |
408 | /* TODO. */ |
409 | } | |
410 | ||
411 | static int vidi_power_on(struct vidi_context *ctx, bool enable) | |
412 | { | |
413 | struct exynos_drm_subdrv *subdrv = &ctx->subdrv; | |
677e84c1 | 414 | struct device *dev = subdrv->dev; |
b73d1230 | 415 | |
b73d1230 ID |
416 | if (enable) { |
417 | ctx->suspended = false; | |
418 | ||
419 | /* if vblank was enabled status, enable it again. */ | |
420 | if (test_and_clear_bit(0, &ctx->irq_flags)) | |
421 | vidi_enable_vblank(dev); | |
422 | ||
423 | vidi_apply(dev); | |
424 | } else { | |
425 | ctx->suspended = true; | |
426 | } | |
427 | ||
428 | return 0; | |
429 | } | |
430 | ||
431 | static int vidi_show_connection(struct device *dev, | |
432 | struct device_attribute *attr, char *buf) | |
433 | { | |
434 | int rc; | |
435 | struct vidi_context *ctx = get_vidi_context(dev); | |
436 | ||
437 | mutex_lock(&ctx->lock); | |
438 | ||
439 | rc = sprintf(buf, "%d\n", ctx->connected); | |
440 | ||
441 | mutex_unlock(&ctx->lock); | |
442 | ||
443 | return rc; | |
444 | } | |
445 | ||
446 | static int vidi_store_connection(struct device *dev, | |
447 | struct device_attribute *attr, | |
448 | const char *buf, size_t len) | |
449 | { | |
450 | struct vidi_context *ctx = get_vidi_context(dev); | |
451 | int ret; | |
452 | ||
b73d1230 ID |
453 | ret = kstrtoint(buf, 0, &ctx->connected); |
454 | if (ret) | |
455 | return ret; | |
456 | ||
457 | if (ctx->connected > 1) | |
458 | return -EINVAL; | |
459 | ||
d07d39df ID |
460 | /* use fake edid data for test. */ |
461 | if (!ctx->raw_edid) | |
462 | ctx->raw_edid = (struct edid *)fake_edid_info; | |
463 | ||
d7b8478a ID |
464 | /* if raw_edid isn't same as fake data then it can't be tested. */ |
465 | if (ctx->raw_edid != (struct edid *)fake_edid_info) { | |
466 | DRM_DEBUG_KMS("edid data is not fake data.\n"); | |
467 | return -EINVAL; | |
468 | } | |
469 | ||
b73d1230 ID |
470 | DRM_DEBUG_KMS("requested connection.\n"); |
471 | ||
472 | drm_helper_hpd_irq_event(ctx->subdrv.drm_dev); | |
473 | ||
474 | return len; | |
475 | } | |
476 | ||
477 | static DEVICE_ATTR(connection, 0644, vidi_show_connection, | |
478 | vidi_store_connection); | |
479 | ||
480 | int vidi_connection_ioctl(struct drm_device *drm_dev, void *data, | |
481 | struct drm_file *file_priv) | |
482 | { | |
483 | struct vidi_context *ctx = NULL; | |
484 | struct drm_encoder *encoder; | |
485 | struct exynos_drm_manager *manager; | |
486 | struct exynos_drm_display_ops *display_ops; | |
487 | struct drm_exynos_vidi_connection *vidi = data; | |
d3b62dbf | 488 | int edid_len; |
b73d1230 | 489 | |
b73d1230 ID |
490 | if (!vidi) { |
491 | DRM_DEBUG_KMS("user data for vidi is null.\n"); | |
492 | return -EINVAL; | |
493 | } | |
494 | ||
b73d1230 ID |
495 | if (vidi->connection > 1) { |
496 | DRM_DEBUG_KMS("connection should be 0 or 1.\n"); | |
497 | return -EINVAL; | |
498 | } | |
499 | ||
500 | list_for_each_entry(encoder, &drm_dev->mode_config.encoder_list, | |
501 | head) { | |
502 | manager = exynos_drm_get_manager(encoder); | |
503 | display_ops = manager->display_ops; | |
504 | ||
505 | if (display_ops->type == EXYNOS_DISPLAY_TYPE_VIDI) { | |
506 | ctx = get_vidi_context(manager->dev); | |
507 | break; | |
508 | } | |
509 | } | |
510 | ||
511 | if (!ctx) { | |
512 | DRM_DEBUG_KMS("not found virtual device type encoder.\n"); | |
513 | return -EINVAL; | |
514 | } | |
515 | ||
516 | if (ctx->connected == vidi->connection) { | |
517 | DRM_DEBUG_KMS("same connection request.\n"); | |
518 | return -EINVAL; | |
519 | } | |
520 | ||
d3b62dbf | 521 | if (vidi->connection) { |
e7808df1 SWK |
522 | struct edid *raw_edid = (struct edid *)(uint32_t)vidi->edid; |
523 | if (!drm_edid_is_valid(raw_edid)) { | |
524 | DRM_DEBUG_KMS("edid data is invalid.\n"); | |
d3b62dbf ID |
525 | return -EINVAL; |
526 | } | |
d3b62dbf | 527 | edid_len = (1 + raw_edid->extensions) * EDID_LENGTH; |
e2779e16 | 528 | ctx->raw_edid = kmemdup(raw_edid, edid_len, GFP_KERNEL); |
d3b62dbf ID |
529 | if (!ctx->raw_edid) { |
530 | DRM_DEBUG_KMS("failed to allocate raw_edid.\n"); | |
531 | return -ENOMEM; | |
532 | } | |
d3b62dbf ID |
533 | } else { |
534 | /* | |
535 | * with connection = 0, free raw_edid | |
536 | * only if raw edid data isn't same as fake data. | |
537 | */ | |
538 | if (ctx->raw_edid && ctx->raw_edid != | |
539 | (struct edid *)fake_edid_info) { | |
540 | kfree(ctx->raw_edid); | |
541 | ctx->raw_edid = NULL; | |
542 | } | |
543 | } | |
b73d1230 ID |
544 | |
545 | ctx->connected = vidi->connection; | |
546 | drm_helper_hpd_irq_event(ctx->subdrv.drm_dev); | |
547 | ||
548 | return 0; | |
549 | } | |
550 | ||
56550d94 | 551 | static int vidi_probe(struct platform_device *pdev) |
b73d1230 ID |
552 | { |
553 | struct device *dev = &pdev->dev; | |
554 | struct vidi_context *ctx; | |
555 | struct exynos_drm_subdrv *subdrv; | |
556 | int ret; | |
557 | ||
d873ab99 | 558 | ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); |
b73d1230 ID |
559 | if (!ctx) |
560 | return -ENOMEM; | |
561 | ||
562 | ctx->default_win = 0; | |
563 | ||
564 | INIT_WORK(&ctx->work, vidi_fake_vblank_handler); | |
565 | ||
b73d1230 | 566 | subdrv = &ctx->subdrv; |
677e84c1 JS |
567 | subdrv->dev = dev; |
568 | subdrv->manager = &vidi_manager; | |
b73d1230 ID |
569 | subdrv->probe = vidi_subdrv_probe; |
570 | subdrv->remove = vidi_subdrv_remove; | |
b73d1230 ID |
571 | |
572 | mutex_init(&ctx->lock); | |
573 | ||
574 | platform_set_drvdata(pdev, ctx); | |
575 | ||
d873ab99 | 576 | ret = device_create_file(dev, &dev_attr_connection); |
b73d1230 ID |
577 | if (ret < 0) |
578 | DRM_INFO("failed to create connection sysfs.\n"); | |
579 | ||
580 | exynos_drm_subdrv_register(subdrv); | |
581 | ||
582 | return 0; | |
583 | } | |
584 | ||
56550d94 | 585 | static int vidi_remove(struct platform_device *pdev) |
b73d1230 ID |
586 | { |
587 | struct vidi_context *ctx = platform_get_drvdata(pdev); | |
588 | ||
b73d1230 ID |
589 | exynos_drm_subdrv_unregister(&ctx->subdrv); |
590 | ||
d3b62dbf ID |
591 | if (ctx->raw_edid != (struct edid *)fake_edid_info) { |
592 | kfree(ctx->raw_edid); | |
593 | ctx->raw_edid = NULL; | |
594 | } | |
595 | ||
b73d1230 ID |
596 | return 0; |
597 | } | |
598 | ||
599 | #ifdef CONFIG_PM_SLEEP | |
600 | static int vidi_suspend(struct device *dev) | |
601 | { | |
602 | struct vidi_context *ctx = get_vidi_context(dev); | |
603 | ||
604 | return vidi_power_on(ctx, false); | |
605 | } | |
606 | ||
607 | static int vidi_resume(struct device *dev) | |
608 | { | |
609 | struct vidi_context *ctx = get_vidi_context(dev); | |
610 | ||
611 | return vidi_power_on(ctx, true); | |
612 | } | |
613 | #endif | |
614 | ||
615 | static const struct dev_pm_ops vidi_pm_ops = { | |
616 | SET_SYSTEM_SLEEP_PM_OPS(vidi_suspend, vidi_resume) | |
617 | }; | |
618 | ||
619 | struct platform_driver vidi_driver = { | |
620 | .probe = vidi_probe, | |
56550d94 | 621 | .remove = vidi_remove, |
b73d1230 ID |
622 | .driver = { |
623 | .name = "exynos-drm-vidi", | |
624 | .owner = THIS_MODULE, | |
625 | .pm = &vidi_pm_ops, | |
626 | }, | |
627 | }; |