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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> | |
b73d1230 ID |
16 | #include <linux/platform_device.h> |
17 | ||
18 | #include <drm/exynos_drm.h> | |
19 | ||
760285e7 DH |
20 | #include <drm/drm_edid.h> |
21 | #include <drm/drm_crtc_helper.h> | |
b73d1230 ID |
22 | |
23 | #include "exynos_drm_drv.h" | |
24 | #include "exynos_drm_crtc.h" | |
25 | #include "exynos_drm_encoder.h" | |
e30655d0 | 26 | #include "exynos_drm_vidi.h" |
b73d1230 ID |
27 | |
28 | /* vidi has totally three virtual windows. */ | |
29 | #define WINDOWS_NR 3 | |
30 | ||
bb7704d6 | 31 | #define get_vidi_mgr(dev) platform_get_drvdata(to_platform_device(dev)) |
ce6cb556 SP |
32 | #define ctx_from_connector(c) container_of(c, struct vidi_context, \ |
33 | connector) | |
b73d1230 ID |
34 | |
35 | struct vidi_win_data { | |
36 | unsigned int offset_x; | |
37 | unsigned int offset_y; | |
38 | unsigned int ovl_width; | |
39 | unsigned int ovl_height; | |
40 | unsigned int fb_width; | |
41 | unsigned int fb_height; | |
42 | unsigned int bpp; | |
43 | dma_addr_t dma_addr; | |
b73d1230 ID |
44 | unsigned int buf_offsize; |
45 | unsigned int line_size; /* bytes */ | |
46 | bool enabled; | |
47 | }; | |
48 | ||
49 | struct vidi_context { | |
080be03d | 50 | struct drm_device *drm_dev; |
b73d1230 | 51 | struct drm_crtc *crtc; |
ce6cb556 SP |
52 | struct drm_encoder *encoder; |
53 | struct drm_connector connector; | |
b73d1230 ID |
54 | struct vidi_win_data win_data[WINDOWS_NR]; |
55 | struct edid *raw_edid; | |
56 | unsigned int clkdiv; | |
57 | unsigned int default_win; | |
58 | unsigned long irq_flags; | |
59 | unsigned int connected; | |
60 | bool vblank_on; | |
61 | bool suspended; | |
291257cf | 62 | bool direct_vblank; |
b73d1230 ID |
63 | struct work_struct work; |
64 | struct mutex lock; | |
080be03d | 65 | int pipe; |
b73d1230 ID |
66 | }; |
67 | ||
68 | static const char fake_edid_info[] = { | |
69 | 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x4c, 0x2d, 0x05, 0x05, | |
70 | 0x00, 0x00, 0x00, 0x00, 0x30, 0x12, 0x01, 0x03, 0x80, 0x10, 0x09, 0x78, | |
71 | 0x0a, 0xee, 0x91, 0xa3, 0x54, 0x4c, 0x99, 0x26, 0x0f, 0x50, 0x54, 0xbd, | |
72 | 0xee, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, | |
73 | 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x66, 0x21, 0x50, 0xb0, 0x51, 0x00, | |
74 | 0x1b, 0x30, 0x40, 0x70, 0x36, 0x00, 0xa0, 0x5a, 0x00, 0x00, 0x00, 0x1e, | |
75 | 0x01, 0x1d, 0x00, 0x72, 0x51, 0xd0, 0x1e, 0x20, 0x6e, 0x28, 0x55, 0x00, | |
76 | 0xa0, 0x5a, 0x00, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x18, | |
77 | 0x4b, 0x1a, 0x44, 0x17, 0x00, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, | |
78 | 0x00, 0x00, 0x00, 0xfc, 0x00, 0x53, 0x41, 0x4d, 0x53, 0x55, 0x4e, 0x47, | |
79 | 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x01, 0xbc, 0x02, 0x03, 0x1e, 0xf1, | |
80 | 0x46, 0x84, 0x05, 0x03, 0x10, 0x20, 0x22, 0x23, 0x09, 0x07, 0x07, 0x83, | |
81 | 0x01, 0x00, 0x00, 0xe2, 0x00, 0x0f, 0x67, 0x03, 0x0c, 0x00, 0x10, 0x00, | |
82 | 0xb8, 0x2d, 0x01, 0x1d, 0x80, 0x18, 0x71, 0x1c, 0x16, 0x20, 0x58, 0x2c, | |
83 | 0x25, 0x00, 0xa0, 0x5a, 0x00, 0x00, 0x00, 0x9e, 0x8c, 0x0a, 0xd0, 0x8a, | |
84 | 0x20, 0xe0, 0x2d, 0x10, 0x10, 0x3e, 0x96, 0x00, 0xa0, 0x5a, 0x00, 0x00, | |
85 | 0x00, 0x18, 0x02, 0x3a, 0x80, 0x18, 0x71, 0x38, 0x2d, 0x40, 0x58, 0x2c, | |
86 | 0x45, 0x00, 0xa0, 0x5a, 0x00, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x00, 0x00, | |
87 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
88 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
89 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
90 | 0x00, 0x00, 0x00, 0x06 | |
91 | }; | |
92 | ||
bb7704d6 | 93 | static void vidi_apply(struct exynos_drm_manager *mgr) |
b73d1230 | 94 | { |
bb7704d6 | 95 | struct vidi_context *ctx = mgr->ctx; |
b73d1230 | 96 | struct exynos_drm_manager_ops *mgr_ops = mgr->ops; |
b73d1230 ID |
97 | struct vidi_win_data *win_data; |
98 | int i; | |
99 | ||
b73d1230 ID |
100 | for (i = 0; i < WINDOWS_NR; i++) { |
101 | win_data = &ctx->win_data[i]; | |
1c6244c3 | 102 | if (win_data->enabled && (mgr_ops && mgr_ops->win_commit)) |
bb7704d6 | 103 | mgr_ops->win_commit(mgr, i); |
b73d1230 ID |
104 | } |
105 | ||
106 | if (mgr_ops && mgr_ops->commit) | |
bb7704d6 | 107 | mgr_ops->commit(mgr); |
b73d1230 ID |
108 | } |
109 | ||
bb7704d6 | 110 | static void vidi_commit(struct exynos_drm_manager *mgr) |
b73d1230 | 111 | { |
bb7704d6 | 112 | struct vidi_context *ctx = mgr->ctx; |
b73d1230 | 113 | |
b73d1230 ID |
114 | if (ctx->suspended) |
115 | return; | |
116 | } | |
117 | ||
bb7704d6 | 118 | static int vidi_enable_vblank(struct exynos_drm_manager *mgr) |
b73d1230 | 119 | { |
bb7704d6 | 120 | struct vidi_context *ctx = mgr->ctx; |
b73d1230 | 121 | |
b73d1230 ID |
122 | if (ctx->suspended) |
123 | return -EPERM; | |
124 | ||
125 | if (!test_and_set_bit(0, &ctx->irq_flags)) | |
126 | ctx->vblank_on = true; | |
127 | ||
291257cf ID |
128 | ctx->direct_vblank = true; |
129 | ||
130 | /* | |
131 | * in case of page flip request, vidi_finish_pageflip function | |
132 | * will not be called because direct_vblank is true and then | |
1c6244c3 | 133 | * that function will be called by manager_ops->win_commit callback |
291257cf ID |
134 | */ |
135 | schedule_work(&ctx->work); | |
136 | ||
b73d1230 ID |
137 | return 0; |
138 | } | |
139 | ||
bb7704d6 | 140 | static void vidi_disable_vblank(struct exynos_drm_manager *mgr) |
b73d1230 | 141 | { |
bb7704d6 | 142 | struct vidi_context *ctx = mgr->ctx; |
b73d1230 | 143 | |
b73d1230 ID |
144 | if (ctx->suspended) |
145 | return; | |
146 | ||
147 | if (test_and_clear_bit(0, &ctx->irq_flags)) | |
148 | ctx->vblank_on = false; | |
149 | } | |
150 | ||
bb7704d6 SP |
151 | static void vidi_win_mode_set(struct exynos_drm_manager *mgr, |
152 | struct exynos_drm_overlay *overlay) | |
b73d1230 | 153 | { |
bb7704d6 | 154 | struct vidi_context *ctx = mgr->ctx; |
b73d1230 ID |
155 | struct vidi_win_data *win_data; |
156 | int win; | |
157 | unsigned long offset; | |
158 | ||
b73d1230 | 159 | if (!overlay) { |
bb7704d6 | 160 | DRM_ERROR("overlay is NULL\n"); |
b73d1230 ID |
161 | return; |
162 | } | |
163 | ||
164 | win = overlay->zpos; | |
165 | if (win == DEFAULT_ZPOS) | |
166 | win = ctx->default_win; | |
167 | ||
a7f98d6a | 168 | if (win < 0 || win >= WINDOWS_NR) |
b73d1230 ID |
169 | return; |
170 | ||
171 | offset = overlay->fb_x * (overlay->bpp >> 3); | |
172 | offset += overlay->fb_y * overlay->pitch; | |
173 | ||
174 | DRM_DEBUG_KMS("offset = 0x%lx, pitch = %x\n", offset, overlay->pitch); | |
175 | ||
176 | win_data = &ctx->win_data[win]; | |
177 | ||
178 | win_data->offset_x = overlay->crtc_x; | |
179 | win_data->offset_y = overlay->crtc_y; | |
180 | win_data->ovl_width = overlay->crtc_width; | |
181 | win_data->ovl_height = overlay->crtc_height; | |
182 | win_data->fb_width = overlay->fb_width; | |
183 | win_data->fb_height = overlay->fb_height; | |
184 | win_data->dma_addr = overlay->dma_addr[0] + offset; | |
b73d1230 ID |
185 | win_data->bpp = overlay->bpp; |
186 | win_data->buf_offsize = (overlay->fb_width - overlay->crtc_width) * | |
187 | (overlay->bpp >> 3); | |
188 | win_data->line_size = overlay->crtc_width * (overlay->bpp >> 3); | |
189 | ||
190 | /* | |
191 | * some parts of win_data should be transferred to user side | |
192 | * through specific ioctl. | |
193 | */ | |
194 | ||
195 | DRM_DEBUG_KMS("offset_x = %d, offset_y = %d\n", | |
196 | win_data->offset_x, win_data->offset_y); | |
197 | DRM_DEBUG_KMS("ovl_width = %d, ovl_height = %d\n", | |
198 | win_data->ovl_width, win_data->ovl_height); | |
ddd8e959 | 199 | DRM_DEBUG_KMS("paddr = 0x%lx\n", (unsigned long)win_data->dma_addr); |
b73d1230 ID |
200 | DRM_DEBUG_KMS("fb_width = %d, crtc_width = %d\n", |
201 | overlay->fb_width, overlay->crtc_width); | |
202 | } | |
203 | ||
bb7704d6 | 204 | static void vidi_win_commit(struct exynos_drm_manager *mgr, int zpos) |
b73d1230 | 205 | { |
bb7704d6 | 206 | struct vidi_context *ctx = mgr->ctx; |
b73d1230 ID |
207 | struct vidi_win_data *win_data; |
208 | int win = zpos; | |
209 | ||
b73d1230 ID |
210 | if (ctx->suspended) |
211 | return; | |
212 | ||
213 | if (win == DEFAULT_ZPOS) | |
214 | win = ctx->default_win; | |
215 | ||
a7f98d6a | 216 | if (win < 0 || win >= WINDOWS_NR) |
b73d1230 ID |
217 | return; |
218 | ||
219 | win_data = &ctx->win_data[win]; | |
220 | ||
221 | win_data->enabled = true; | |
222 | ||
b8eade24 | 223 | DRM_DEBUG_KMS("dma_addr = %pad\n", &win_data->dma_addr); |
b73d1230 ID |
224 | |
225 | if (ctx->vblank_on) | |
226 | schedule_work(&ctx->work); | |
227 | } | |
228 | ||
bb7704d6 | 229 | static void vidi_win_disable(struct exynos_drm_manager *mgr, int zpos) |
b73d1230 | 230 | { |
bb7704d6 | 231 | struct vidi_context *ctx = mgr->ctx; |
b73d1230 ID |
232 | struct vidi_win_data *win_data; |
233 | int win = zpos; | |
234 | ||
b73d1230 ID |
235 | if (win == DEFAULT_ZPOS) |
236 | win = ctx->default_win; | |
237 | ||
a7f98d6a | 238 | if (win < 0 || win >= WINDOWS_NR) |
b73d1230 ID |
239 | return; |
240 | ||
241 | win_data = &ctx->win_data[win]; | |
242 | win_data->enabled = false; | |
243 | ||
244 | /* TODO. */ | |
245 | } | |
246 | ||
af65c804 SP |
247 | static int vidi_power_on(struct exynos_drm_manager *mgr, bool enable) |
248 | { | |
249 | struct vidi_context *ctx = mgr->ctx; | |
250 | ||
251 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
252 | ||
253 | if (enable != false && enable != true) | |
254 | return -EINVAL; | |
255 | ||
256 | if (enable) { | |
257 | ctx->suspended = false; | |
258 | ||
259 | /* if vblank was enabled status, enable it again. */ | |
260 | if (test_and_clear_bit(0, &ctx->irq_flags)) | |
261 | vidi_enable_vblank(mgr); | |
262 | ||
263 | vidi_apply(mgr); | |
264 | } else { | |
265 | ctx->suspended = true; | |
266 | } | |
267 | ||
268 | return 0; | |
269 | } | |
270 | ||
271 | static void vidi_dpms(struct exynos_drm_manager *mgr, int mode) | |
272 | { | |
273 | struct vidi_context *ctx = mgr->ctx; | |
274 | ||
275 | DRM_DEBUG_KMS("%d\n", mode); | |
276 | ||
277 | mutex_lock(&ctx->lock); | |
278 | ||
279 | switch (mode) { | |
280 | case DRM_MODE_DPMS_ON: | |
281 | vidi_power_on(mgr, true); | |
282 | break; | |
283 | case DRM_MODE_DPMS_STANDBY: | |
284 | case DRM_MODE_DPMS_SUSPEND: | |
285 | case DRM_MODE_DPMS_OFF: | |
286 | vidi_power_on(mgr, false); | |
287 | break; | |
288 | default: | |
289 | DRM_DEBUG_KMS("unspecified mode %d\n", mode); | |
290 | break; | |
291 | } | |
292 | ||
293 | mutex_unlock(&ctx->lock); | |
294 | } | |
295 | ||
080be03d SP |
296 | static int vidi_mgr_initialize(struct exynos_drm_manager *mgr, |
297 | struct drm_device *drm_dev, int pipe) | |
298 | { | |
299 | struct vidi_context *ctx = mgr->ctx; | |
300 | ||
301 | DRM_ERROR("vidi initialize ct=%p dev=%p pipe=%d\n", ctx, drm_dev, pipe); | |
302 | ||
303 | ctx->drm_dev = drm_dev; | |
304 | ctx->pipe = pipe; | |
305 | ||
306 | /* | |
307 | * enable drm irq mode. | |
308 | * - with irq_enabled = 1, we can use the vblank feature. | |
309 | * | |
310 | * P.S. note that we wouldn't use drm irq handler but | |
311 | * just specific driver own one instead because | |
312 | * drm framework supports only one irq handler. | |
313 | */ | |
314 | drm_dev->irq_enabled = 1; | |
315 | ||
316 | /* | |
317 | * with vblank_disable_allowed = 1, vblank interrupt will be disabled | |
318 | * by drm timer once a current process gives up ownership of | |
319 | * vblank event.(after drm_vblank_put function is called) | |
320 | */ | |
321 | drm_dev->vblank_disable_allowed = 1; | |
322 | ||
323 | return 0; | |
324 | } | |
325 | ||
1c6244c3 | 326 | static struct exynos_drm_manager_ops vidi_manager_ops = { |
080be03d | 327 | .initialize = vidi_mgr_initialize, |
1c6244c3 | 328 | .dpms = vidi_dpms, |
1c6244c3 SP |
329 | .commit = vidi_commit, |
330 | .enable_vblank = vidi_enable_vblank, | |
331 | .disable_vblank = vidi_disable_vblank, | |
332 | .win_mode_set = vidi_win_mode_set, | |
333 | .win_commit = vidi_win_commit, | |
334 | .win_disable = vidi_win_disable, | |
b73d1230 ID |
335 | }; |
336 | ||
677e84c1 | 337 | static struct exynos_drm_manager vidi_manager = { |
080be03d SP |
338 | .type = EXYNOS_DISPLAY_TYPE_VIDI, |
339 | .ops = &vidi_manager_ops, | |
677e84c1 JS |
340 | }; |
341 | ||
b73d1230 ID |
342 | static void vidi_fake_vblank_handler(struct work_struct *work) |
343 | { | |
344 | struct vidi_context *ctx = container_of(work, struct vidi_context, | |
345 | work); | |
b73d1230 | 346 | |
080be03d | 347 | if (ctx->pipe < 0) |
b73d1230 ID |
348 | return; |
349 | ||
350 | /* refresh rate is about 50Hz. */ | |
351 | usleep_range(16000, 20000); | |
352 | ||
291257cf ID |
353 | mutex_lock(&ctx->lock); |
354 | ||
355 | if (ctx->direct_vblank) { | |
080be03d | 356 | drm_handle_vblank(ctx->drm_dev, ctx->pipe); |
291257cf ID |
357 | ctx->direct_vblank = false; |
358 | mutex_unlock(&ctx->lock); | |
359 | return; | |
360 | } | |
361 | ||
362 | mutex_unlock(&ctx->lock); | |
363 | ||
080be03d | 364 | exynos_drm_crtc_finish_pageflip(ctx->drm_dev, ctx->pipe); |
b73d1230 ID |
365 | } |
366 | ||
b73d1230 ID |
367 | static int vidi_show_connection(struct device *dev, |
368 | struct device_attribute *attr, char *buf) | |
369 | { | |
370 | int rc; | |
bb7704d6 SP |
371 | struct exynos_drm_manager *mgr = get_vidi_mgr(dev); |
372 | struct vidi_context *ctx = mgr->ctx; | |
b73d1230 ID |
373 | |
374 | mutex_lock(&ctx->lock); | |
375 | ||
376 | rc = sprintf(buf, "%d\n", ctx->connected); | |
377 | ||
378 | mutex_unlock(&ctx->lock); | |
379 | ||
380 | return rc; | |
381 | } | |
382 | ||
383 | static int vidi_store_connection(struct device *dev, | |
384 | struct device_attribute *attr, | |
385 | const char *buf, size_t len) | |
386 | { | |
bb7704d6 SP |
387 | struct exynos_drm_manager *mgr = get_vidi_mgr(dev); |
388 | struct vidi_context *ctx = mgr->ctx; | |
b73d1230 ID |
389 | int ret; |
390 | ||
b73d1230 ID |
391 | ret = kstrtoint(buf, 0, &ctx->connected); |
392 | if (ret) | |
393 | return ret; | |
394 | ||
395 | if (ctx->connected > 1) | |
396 | return -EINVAL; | |
397 | ||
d07d39df ID |
398 | /* use fake edid data for test. */ |
399 | if (!ctx->raw_edid) | |
400 | ctx->raw_edid = (struct edid *)fake_edid_info; | |
401 | ||
d7b8478a ID |
402 | /* if raw_edid isn't same as fake data then it can't be tested. */ |
403 | if (ctx->raw_edid != (struct edid *)fake_edid_info) { | |
404 | DRM_DEBUG_KMS("edid data is not fake data.\n"); | |
405 | return -EINVAL; | |
406 | } | |
407 | ||
b73d1230 ID |
408 | DRM_DEBUG_KMS("requested connection.\n"); |
409 | ||
080be03d | 410 | drm_helper_hpd_irq_event(ctx->drm_dev); |
b73d1230 ID |
411 | |
412 | return len; | |
413 | } | |
414 | ||
415 | static DEVICE_ATTR(connection, 0644, vidi_show_connection, | |
416 | vidi_store_connection); | |
417 | ||
418 | int vidi_connection_ioctl(struct drm_device *drm_dev, void *data, | |
419 | struct drm_file *file_priv) | |
420 | { | |
421 | struct vidi_context *ctx = NULL; | |
422 | struct drm_encoder *encoder; | |
080be03d | 423 | struct exynos_drm_display *display; |
b73d1230 ID |
424 | struct drm_exynos_vidi_connection *vidi = data; |
425 | ||
b73d1230 ID |
426 | if (!vidi) { |
427 | DRM_DEBUG_KMS("user data for vidi is null.\n"); | |
428 | return -EINVAL; | |
429 | } | |
430 | ||
b73d1230 ID |
431 | if (vidi->connection > 1) { |
432 | DRM_DEBUG_KMS("connection should be 0 or 1.\n"); | |
433 | return -EINVAL; | |
434 | } | |
435 | ||
436 | list_for_each_entry(encoder, &drm_dev->mode_config.encoder_list, | |
437 | head) { | |
080be03d | 438 | display = exynos_drm_get_display(encoder); |
b73d1230 | 439 | |
080be03d SP |
440 | if (display->type == EXYNOS_DISPLAY_TYPE_VIDI) { |
441 | ctx = display->ctx; | |
b73d1230 ID |
442 | break; |
443 | } | |
444 | } | |
445 | ||
446 | if (!ctx) { | |
447 | DRM_DEBUG_KMS("not found virtual device type encoder.\n"); | |
448 | return -EINVAL; | |
449 | } | |
450 | ||
451 | if (ctx->connected == vidi->connection) { | |
452 | DRM_DEBUG_KMS("same connection request.\n"); | |
453 | return -EINVAL; | |
454 | } | |
455 | ||
d3b62dbf | 456 | if (vidi->connection) { |
e7808df1 SWK |
457 | struct edid *raw_edid = (struct edid *)(uint32_t)vidi->edid; |
458 | if (!drm_edid_is_valid(raw_edid)) { | |
459 | DRM_DEBUG_KMS("edid data is invalid.\n"); | |
d3b62dbf ID |
460 | return -EINVAL; |
461 | } | |
4ddc773b | 462 | ctx->raw_edid = drm_edid_duplicate(raw_edid); |
d3b62dbf ID |
463 | if (!ctx->raw_edid) { |
464 | DRM_DEBUG_KMS("failed to allocate raw_edid.\n"); | |
465 | return -ENOMEM; | |
466 | } | |
d3b62dbf ID |
467 | } else { |
468 | /* | |
469 | * with connection = 0, free raw_edid | |
470 | * only if raw edid data isn't same as fake data. | |
471 | */ | |
472 | if (ctx->raw_edid && ctx->raw_edid != | |
473 | (struct edid *)fake_edid_info) { | |
474 | kfree(ctx->raw_edid); | |
475 | ctx->raw_edid = NULL; | |
476 | } | |
477 | } | |
b73d1230 ID |
478 | |
479 | ctx->connected = vidi->connection; | |
080be03d | 480 | drm_helper_hpd_irq_event(ctx->drm_dev); |
b73d1230 ID |
481 | |
482 | return 0; | |
483 | } | |
484 | ||
ce6cb556 SP |
485 | static enum drm_connector_status vidi_detect(struct drm_connector *connector, |
486 | bool force) | |
487 | { | |
488 | struct vidi_context *ctx = ctx_from_connector(connector); | |
489 | ||
490 | /* | |
491 | * connection request would come from user side | |
492 | * to do hotplug through specific ioctl. | |
493 | */ | |
494 | return ctx->connected ? connector_status_connected : | |
495 | connector_status_disconnected; | |
496 | } | |
497 | ||
498 | static void vidi_connector_destroy(struct drm_connector *connector) | |
499 | { | |
500 | } | |
501 | ||
502 | static struct drm_connector_funcs vidi_connector_funcs = { | |
503 | .dpms = drm_helper_connector_dpms, | |
504 | .fill_modes = drm_helper_probe_single_connector_modes, | |
505 | .detect = vidi_detect, | |
506 | .destroy = vidi_connector_destroy, | |
507 | }; | |
508 | ||
509 | static int vidi_get_modes(struct drm_connector *connector) | |
510 | { | |
511 | struct vidi_context *ctx = ctx_from_connector(connector); | |
512 | struct edid *edid; | |
513 | int edid_len; | |
514 | ||
515 | /* | |
516 | * the edid data comes from user side and it would be set | |
517 | * to ctx->raw_edid through specific ioctl. | |
518 | */ | |
519 | if (!ctx->raw_edid) { | |
520 | DRM_DEBUG_KMS("raw_edid is null.\n"); | |
521 | return -EFAULT; | |
522 | } | |
523 | ||
524 | edid_len = (1 + ctx->raw_edid->extensions) * EDID_LENGTH; | |
525 | edid = kmemdup(ctx->raw_edid, edid_len, GFP_KERNEL); | |
526 | if (!edid) { | |
527 | DRM_DEBUG_KMS("failed to allocate edid\n"); | |
528 | return -ENOMEM; | |
529 | } | |
530 | ||
531 | drm_mode_connector_update_edid_property(connector, edid); | |
532 | ||
533 | return drm_add_edid_modes(connector, edid); | |
534 | } | |
535 | ||
ce6cb556 SP |
536 | static struct drm_encoder *vidi_best_encoder(struct drm_connector *connector) |
537 | { | |
538 | struct vidi_context *ctx = ctx_from_connector(connector); | |
539 | ||
540 | return ctx->encoder; | |
541 | } | |
542 | ||
543 | static struct drm_connector_helper_funcs vidi_connector_helper_funcs = { | |
544 | .get_modes = vidi_get_modes, | |
ce6cb556 SP |
545 | .best_encoder = vidi_best_encoder, |
546 | }; | |
547 | ||
548 | static int vidi_create_connector(struct exynos_drm_display *display, | |
549 | struct drm_encoder *encoder) | |
550 | { | |
551 | struct vidi_context *ctx = display->ctx; | |
552 | struct drm_connector *connector = &ctx->connector; | |
553 | int ret; | |
554 | ||
555 | ctx->encoder = encoder; | |
556 | connector->polled = DRM_CONNECTOR_POLL_HPD; | |
557 | ||
558 | ret = drm_connector_init(ctx->drm_dev, connector, | |
559 | &vidi_connector_funcs, DRM_MODE_CONNECTOR_VIRTUAL); | |
560 | if (ret) { | |
561 | DRM_ERROR("Failed to initialize connector with drm\n"); | |
562 | return ret; | |
563 | } | |
564 | ||
565 | drm_connector_helper_add(connector, &vidi_connector_helper_funcs); | |
566 | drm_sysfs_connector_add(connector); | |
567 | drm_mode_connector_attach_encoder(connector, encoder); | |
568 | ||
569 | return 0; | |
570 | } | |
571 | ||
572 | ||
573 | static struct exynos_drm_display_ops vidi_display_ops = { | |
574 | .create_connector = vidi_create_connector, | |
575 | }; | |
576 | ||
577 | static struct exynos_drm_display vidi_display = { | |
578 | .type = EXYNOS_DISPLAY_TYPE_VIDI, | |
579 | .ops = &vidi_display_ops, | |
580 | }; | |
581 | ||
56550d94 | 582 | static int vidi_probe(struct platform_device *pdev) |
b73d1230 ID |
583 | { |
584 | struct device *dev = &pdev->dev; | |
585 | struct vidi_context *ctx; | |
b73d1230 ID |
586 | int ret; |
587 | ||
d873ab99 | 588 | ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); |
b73d1230 ID |
589 | if (!ctx) |
590 | return -ENOMEM; | |
591 | ||
592 | ctx->default_win = 0; | |
593 | ||
594 | INIT_WORK(&ctx->work, vidi_fake_vblank_handler); | |
595 | ||
bb7704d6 | 596 | vidi_manager.ctx = ctx; |
080be03d | 597 | vidi_display.ctx = ctx; |
b73d1230 ID |
598 | |
599 | mutex_init(&ctx->lock); | |
600 | ||
bb7704d6 | 601 | platform_set_drvdata(pdev, &vidi_manager); |
b73d1230 | 602 | |
d873ab99 | 603 | ret = device_create_file(dev, &dev_attr_connection); |
b73d1230 ID |
604 | if (ret < 0) |
605 | DRM_INFO("failed to create connection sysfs.\n"); | |
606 | ||
080be03d SP |
607 | exynos_drm_manager_register(&vidi_manager); |
608 | exynos_drm_display_register(&vidi_display); | |
b73d1230 ID |
609 | |
610 | return 0; | |
611 | } | |
612 | ||
56550d94 | 613 | static int vidi_remove(struct platform_device *pdev) |
b73d1230 ID |
614 | { |
615 | struct vidi_context *ctx = platform_get_drvdata(pdev); | |
616 | ||
080be03d SP |
617 | exynos_drm_display_unregister(&vidi_display); |
618 | exynos_drm_manager_unregister(&vidi_manager); | |
b73d1230 | 619 | |
d3b62dbf ID |
620 | if (ctx->raw_edid != (struct edid *)fake_edid_info) { |
621 | kfree(ctx->raw_edid); | |
622 | ctx->raw_edid = NULL; | |
623 | } | |
624 | ||
b73d1230 ID |
625 | return 0; |
626 | } | |
627 | ||
b73d1230 ID |
628 | struct platform_driver vidi_driver = { |
629 | .probe = vidi_probe, | |
56550d94 | 630 | .remove = vidi_remove, |
b73d1230 ID |
631 | .driver = { |
632 | .name = "exynos-drm-vidi", | |
633 | .owner = THIS_MODULE, | |
b73d1230 ID |
634 | }, |
635 | }; |