Commit | Line | Data |
---|---|---|
e692da4d SH |
1 | /* |
2 | * Freescale i.MX drm driver | |
3 | * | |
4 | * Copyright (C) 2011 Sascha Hauer, Pengutronix | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version 2 | |
9 | * of the License, or (at your option) any later version. | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | */ | |
16 | ||
17 | #include <linux/device.h> | |
18 | #include <linux/platform_device.h> | |
19 | #include <drm/drmP.h> | |
20 | #include <drm/drm_fb_helper.h> | |
21 | #include <drm/drm_crtc_helper.h> | |
22 | #include <linux/fb.h> | |
23 | #include <linux/module.h> | |
24 | #include <drm/drm_gem_cma_helper.h> | |
25 | #include <drm/drm_fb_cma_helper.h> | |
26 | ||
27 | #include "imx-drm.h" | |
28 | ||
29 | #define MAX_CRTC 4 | |
30 | ||
31 | struct crtc_cookie { | |
32 | void *cookie; | |
33 | int id; | |
34 | struct list_head list; | |
35 | }; | |
36 | ||
37 | struct imx_drm_device { | |
38 | struct drm_device *drm; | |
39 | struct device *dev; | |
40 | struct list_head crtc_list; | |
41 | struct list_head encoder_list; | |
42 | struct list_head connector_list; | |
43 | struct mutex mutex; | |
e692da4d SH |
44 | int pipes; |
45 | struct drm_fbdev_cma *fbhelper; | |
46 | }; | |
47 | ||
48 | struct imx_drm_crtc { | |
49 | struct drm_crtc *crtc; | |
50 | struct list_head list; | |
51 | struct imx_drm_device *imxdrm; | |
52 | int pipe; | |
53 | struct imx_drm_crtc_helper_funcs imx_drm_helper_funcs; | |
54 | struct module *owner; | |
55 | struct crtc_cookie cookie; | |
56 | }; | |
57 | ||
58 | struct imx_drm_encoder { | |
59 | struct drm_encoder *encoder; | |
60 | struct list_head list; | |
61 | struct module *owner; | |
62 | struct list_head possible_crtcs; | |
63 | }; | |
64 | ||
65 | struct imx_drm_connector { | |
66 | struct drm_connector *connector; | |
67 | struct list_head list; | |
68 | struct module *owner; | |
69 | }; | |
70 | ||
b8d181e4 PZ |
71 | int imx_drm_crtc_id(struct imx_drm_crtc *crtc) |
72 | { | |
73 | return crtc->pipe; | |
74 | } | |
75 | ||
e692da4d SH |
76 | static void imx_drm_driver_lastclose(struct drm_device *drm) |
77 | { | |
78 | struct imx_drm_device *imxdrm = drm->dev_private; | |
79 | ||
80 | if (imxdrm->fbhelper) | |
81 | drm_fbdev_cma_restore_mode(imxdrm->fbhelper); | |
e692da4d SH |
82 | } |
83 | ||
84 | static int imx_drm_driver_unload(struct drm_device *drm) | |
85 | { | |
86 | struct imx_drm_device *imxdrm = drm->dev_private; | |
87 | ||
aaba4b58 DV |
88 | imx_drm_device_put(); |
89 | ||
e692da4d SH |
90 | drm_mode_config_cleanup(imxdrm->drm); |
91 | drm_kms_helper_poll_fini(imxdrm->drm); | |
92 | ||
93 | return 0; | |
94 | } | |
95 | ||
96 | /* | |
97 | * We don't care at all for crtc numbers, but the core expects the | |
98 | * crtcs to be numbered | |
99 | */ | |
100 | static struct imx_drm_crtc *imx_drm_crtc_by_num(struct imx_drm_device *imxdrm, | |
101 | int num) | |
102 | { | |
103 | struct imx_drm_crtc *imx_drm_crtc; | |
104 | ||
105 | list_for_each_entry(imx_drm_crtc, &imxdrm->crtc_list, list) | |
106 | if (imx_drm_crtc->pipe == num) | |
107 | return imx_drm_crtc; | |
108 | return NULL; | |
109 | } | |
110 | ||
2ea42608 PZ |
111 | int imx_drm_crtc_panel_format_pins(struct drm_crtc *crtc, u32 encoder_type, |
112 | u32 interface_pix_fmt, int hsync_pin, int vsync_pin) | |
e692da4d SH |
113 | { |
114 | struct imx_drm_device *imxdrm = crtc->dev->dev_private; | |
115 | struct imx_drm_crtc *imx_crtc; | |
116 | struct imx_drm_crtc_helper_funcs *helper; | |
117 | ||
e692da4d SH |
118 | list_for_each_entry(imx_crtc, &imxdrm->crtc_list, list) |
119 | if (imx_crtc->crtc == crtc) | |
120 | goto found; | |
121 | ||
e692da4d SH |
122 | return -EINVAL; |
123 | found: | |
e692da4d SH |
124 | helper = &imx_crtc->imx_drm_helper_funcs; |
125 | if (helper->set_interface_pix_fmt) | |
126 | return helper->set_interface_pix_fmt(crtc, | |
2ea42608 PZ |
127 | encoder_type, interface_pix_fmt, |
128 | hsync_pin, vsync_pin); | |
e692da4d SH |
129 | return 0; |
130 | } | |
2ea42608 PZ |
131 | EXPORT_SYMBOL_GPL(imx_drm_crtc_panel_format_pins); |
132 | ||
133 | int imx_drm_crtc_panel_format(struct drm_crtc *crtc, u32 encoder_type, | |
134 | u32 interface_pix_fmt) | |
135 | { | |
136 | return imx_drm_crtc_panel_format_pins(crtc, encoder_type, | |
079461bf | 137 | interface_pix_fmt, 2, 3); |
2ea42608 | 138 | } |
aecfbdb1 | 139 | EXPORT_SYMBOL_GPL(imx_drm_crtc_panel_format); |
e692da4d SH |
140 | |
141 | int imx_drm_crtc_vblank_get(struct imx_drm_crtc *imx_drm_crtc) | |
142 | { | |
143 | return drm_vblank_get(imx_drm_crtc->imxdrm->drm, imx_drm_crtc->pipe); | |
144 | } | |
145 | EXPORT_SYMBOL_GPL(imx_drm_crtc_vblank_get); | |
146 | ||
147 | void imx_drm_crtc_vblank_put(struct imx_drm_crtc *imx_drm_crtc) | |
148 | { | |
149 | drm_vblank_put(imx_drm_crtc->imxdrm->drm, imx_drm_crtc->pipe); | |
150 | } | |
151 | EXPORT_SYMBOL_GPL(imx_drm_crtc_vblank_put); | |
152 | ||
153 | void imx_drm_handle_vblank(struct imx_drm_crtc *imx_drm_crtc) | |
154 | { | |
155 | drm_handle_vblank(imx_drm_crtc->imxdrm->drm, imx_drm_crtc->pipe); | |
156 | } | |
157 | EXPORT_SYMBOL_GPL(imx_drm_handle_vblank); | |
158 | ||
159 | static int imx_drm_enable_vblank(struct drm_device *drm, int crtc) | |
160 | { | |
161 | struct imx_drm_device *imxdrm = drm->dev_private; | |
162 | struct imx_drm_crtc *imx_drm_crtc; | |
163 | int ret; | |
164 | ||
165 | imx_drm_crtc = imx_drm_crtc_by_num(imxdrm, crtc); | |
166 | if (!imx_drm_crtc) | |
167 | return -EINVAL; | |
168 | ||
169 | if (!imx_drm_crtc->imx_drm_helper_funcs.enable_vblank) | |
170 | return -ENOSYS; | |
171 | ||
172 | ret = imx_drm_crtc->imx_drm_helper_funcs.enable_vblank( | |
173 | imx_drm_crtc->crtc); | |
174 | ||
175 | return ret; | |
176 | } | |
177 | ||
178 | static void imx_drm_disable_vblank(struct drm_device *drm, int crtc) | |
179 | { | |
180 | struct imx_drm_device *imxdrm = drm->dev_private; | |
181 | struct imx_drm_crtc *imx_drm_crtc; | |
182 | ||
183 | imx_drm_crtc = imx_drm_crtc_by_num(imxdrm, crtc); | |
184 | if (!imx_drm_crtc) | |
185 | return; | |
186 | ||
187 | if (!imx_drm_crtc->imx_drm_helper_funcs.disable_vblank) | |
188 | return; | |
189 | ||
190 | imx_drm_crtc->imx_drm_helper_funcs.disable_vblank(imx_drm_crtc->crtc); | |
191 | } | |
192 | ||
6ee4d7fe SH |
193 | static void imx_drm_driver_preclose(struct drm_device *drm, |
194 | struct drm_file *file) | |
195 | { | |
196 | int i; | |
197 | ||
198 | if (!file->is_master) | |
199 | return; | |
200 | ||
201 | for (i = 0; i < 4; i++) | |
202 | imx_drm_disable_vblank(drm , i); | |
203 | } | |
204 | ||
e692da4d SH |
205 | static const struct file_operations imx_drm_driver_fops = { |
206 | .owner = THIS_MODULE, | |
207 | .open = drm_open, | |
208 | .release = drm_release, | |
209 | .unlocked_ioctl = drm_ioctl, | |
210 | .mmap = drm_gem_cma_mmap, | |
211 | .poll = drm_poll, | |
e692da4d SH |
212 | .read = drm_read, |
213 | .llseek = noop_llseek, | |
214 | }; | |
215 | ||
216 | static struct imx_drm_device *imx_drm_device; | |
217 | ||
218 | static struct imx_drm_device *__imx_drm_device(void) | |
219 | { | |
220 | return imx_drm_device; | |
221 | } | |
222 | ||
223 | struct drm_device *imx_drm_device_get(void) | |
224 | { | |
225 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
226 | struct imx_drm_encoder *enc; | |
227 | struct imx_drm_connector *con; | |
228 | struct imx_drm_crtc *crtc; | |
229 | ||
e692da4d SH |
230 | list_for_each_entry(enc, &imxdrm->encoder_list, list) { |
231 | if (!try_module_get(enc->owner)) { | |
232 | dev_err(imxdrm->dev, "could not get module %s\n", | |
233 | module_name(enc->owner)); | |
234 | goto unwind_enc; | |
235 | } | |
236 | } | |
237 | ||
238 | list_for_each_entry(con, &imxdrm->connector_list, list) { | |
239 | if (!try_module_get(con->owner)) { | |
240 | dev_err(imxdrm->dev, "could not get module %s\n", | |
241 | module_name(con->owner)); | |
242 | goto unwind_con; | |
243 | } | |
244 | } | |
245 | ||
246 | list_for_each_entry(crtc, &imxdrm->crtc_list, list) { | |
247 | if (!try_module_get(crtc->owner)) { | |
248 | dev_err(imxdrm->dev, "could not get module %s\n", | |
249 | module_name(crtc->owner)); | |
250 | goto unwind_crtc; | |
251 | } | |
252 | } | |
253 | ||
e692da4d SH |
254 | return imxdrm->drm; |
255 | ||
256 | unwind_crtc: | |
257 | list_for_each_entry_continue_reverse(crtc, &imxdrm->crtc_list, list) | |
258 | module_put(crtc->owner); | |
259 | unwind_con: | |
260 | list_for_each_entry_continue_reverse(con, &imxdrm->connector_list, list) | |
261 | module_put(con->owner); | |
262 | unwind_enc: | |
263 | list_for_each_entry_continue_reverse(enc, &imxdrm->encoder_list, list) | |
264 | module_put(enc->owner); | |
265 | ||
266 | mutex_unlock(&imxdrm->mutex); | |
267 | ||
268 | return NULL; | |
269 | ||
270 | } | |
271 | EXPORT_SYMBOL_GPL(imx_drm_device_get); | |
272 | ||
273 | void imx_drm_device_put(void) | |
274 | { | |
275 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
276 | struct imx_drm_encoder *enc; | |
277 | struct imx_drm_connector *con; | |
278 | struct imx_drm_crtc *crtc; | |
279 | ||
280 | mutex_lock(&imxdrm->mutex); | |
281 | ||
282 | list_for_each_entry(crtc, &imxdrm->crtc_list, list) | |
283 | module_put(crtc->owner); | |
284 | ||
285 | list_for_each_entry(con, &imxdrm->connector_list, list) | |
286 | module_put(con->owner); | |
287 | ||
288 | list_for_each_entry(enc, &imxdrm->encoder_list, list) | |
289 | module_put(enc->owner); | |
290 | ||
e692da4d SH |
291 | mutex_unlock(&imxdrm->mutex); |
292 | } | |
293 | EXPORT_SYMBOL_GPL(imx_drm_device_put); | |
294 | ||
295 | static int drm_mode_group_reinit(struct drm_device *dev) | |
296 | { | |
297 | struct drm_mode_group *group = &dev->primary->mode_group; | |
298 | uint32_t *id_list = group->id_list; | |
299 | int ret; | |
300 | ||
301 | ret = drm_mode_group_init_legacy_group(dev, group); | |
302 | if (ret < 0) | |
303 | return ret; | |
304 | ||
305 | kfree(id_list); | |
306 | return 0; | |
307 | } | |
308 | ||
309 | /* | |
310 | * register an encoder to the drm core | |
311 | */ | |
312 | static int imx_drm_encoder_register(struct imx_drm_encoder *imx_drm_encoder) | |
313 | { | |
314 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
315 | ||
316 | INIT_LIST_HEAD(&imx_drm_encoder->possible_crtcs); | |
317 | ||
318 | drm_encoder_init(imxdrm->drm, imx_drm_encoder->encoder, | |
319 | imx_drm_encoder->encoder->funcs, | |
320 | imx_drm_encoder->encoder->encoder_type); | |
321 | ||
322 | drm_mode_group_reinit(imxdrm->drm); | |
323 | ||
324 | return 0; | |
325 | } | |
326 | ||
327 | /* | |
328 | * unregister an encoder from the drm core | |
329 | */ | |
330 | static void imx_drm_encoder_unregister(struct imx_drm_encoder | |
331 | *imx_drm_encoder) | |
332 | { | |
333 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
334 | ||
335 | drm_encoder_cleanup(imx_drm_encoder->encoder); | |
336 | ||
337 | drm_mode_group_reinit(imxdrm->drm); | |
338 | } | |
339 | ||
340 | /* | |
341 | * register a connector to the drm core | |
342 | */ | |
343 | static int imx_drm_connector_register( | |
344 | struct imx_drm_connector *imx_drm_connector) | |
345 | { | |
346 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
347 | ||
348 | drm_connector_init(imxdrm->drm, imx_drm_connector->connector, | |
349 | imx_drm_connector->connector->funcs, | |
350 | imx_drm_connector->connector->connector_type); | |
351 | drm_mode_group_reinit(imxdrm->drm); | |
352 | ||
353 | return drm_sysfs_connector_add(imx_drm_connector->connector); | |
354 | } | |
355 | ||
356 | /* | |
357 | * unregister a connector from the drm core | |
358 | */ | |
359 | static void imx_drm_connector_unregister( | |
360 | struct imx_drm_connector *imx_drm_connector) | |
361 | { | |
362 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
363 | ||
364 | drm_sysfs_connector_remove(imx_drm_connector->connector); | |
365 | drm_connector_cleanup(imx_drm_connector->connector); | |
366 | ||
367 | drm_mode_group_reinit(imxdrm->drm); | |
368 | } | |
369 | ||
370 | /* | |
371 | * register a crtc to the drm core | |
372 | */ | |
373 | static int imx_drm_crtc_register(struct imx_drm_crtc *imx_drm_crtc) | |
374 | { | |
375 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
376 | int ret; | |
377 | ||
378 | drm_crtc_init(imxdrm->drm, imx_drm_crtc->crtc, | |
379 | imx_drm_crtc->imx_drm_helper_funcs.crtc_funcs); | |
380 | ret = drm_mode_crtc_set_gamma_size(imx_drm_crtc->crtc, 256); | |
381 | if (ret) | |
382 | return ret; | |
383 | ||
384 | drm_crtc_helper_add(imx_drm_crtc->crtc, | |
385 | imx_drm_crtc->imx_drm_helper_funcs.crtc_helper_funcs); | |
386 | ||
387 | drm_mode_group_reinit(imxdrm->drm); | |
388 | ||
389 | return 0; | |
390 | } | |
391 | ||
392 | /* | |
393 | * Called by the CRTC driver when all CRTCs are registered. This | |
394 | * puts all the pieces together and initializes the driver. | |
395 | * Once this is called no more CRTCs can be registered since | |
396 | * the drm core has hardcoded the number of crtcs in several | |
397 | * places. | |
398 | */ | |
399 | static int imx_drm_driver_load(struct drm_device *drm, unsigned long flags) | |
400 | { | |
401 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
402 | int ret; | |
403 | ||
404 | imxdrm->drm = drm; | |
405 | ||
406 | drm->dev_private = imxdrm; | |
407 | ||
408 | /* | |
409 | * enable drm irq mode. | |
410 | * - with irq_enabled = 1, we can use the vblank feature. | |
411 | * | |
412 | * P.S. note that we wouldn't use drm irq handler but | |
413 | * just specific driver own one instead because | |
414 | * drm framework supports only one irq handler and | |
415 | * drivers can well take care of their interrupts | |
416 | */ | |
417 | drm->irq_enabled = 1; | |
418 | ||
419 | drm_mode_config_init(drm); | |
420 | imx_drm_mode_config_init(drm); | |
421 | ||
422 | mutex_lock(&imxdrm->mutex); | |
423 | ||
424 | drm_kms_helper_poll_init(imxdrm->drm); | |
425 | ||
426 | /* setup the grouping for the legacy output */ | |
427 | ret = drm_mode_group_init_legacy_group(imxdrm->drm, | |
428 | &imxdrm->drm->primary->mode_group); | |
429 | if (ret) | |
430 | goto err_init; | |
431 | ||
432 | ret = drm_vblank_init(imxdrm->drm, MAX_CRTC); | |
433 | if (ret) | |
434 | goto err_init; | |
435 | ||
436 | /* | |
437 | * with vblank_disable_allowed = 1, vblank interrupt will be disabled | |
438 | * by drm timer once a current process gives up ownership of | |
439 | * vblank event.(after drm_vblank_put function is called) | |
440 | */ | |
441 | imxdrm->drm->vblank_disable_allowed = 1; | |
442 | ||
aaba4b58 DV |
443 | if (!imx_drm_device_get()) |
444 | ret = -EINVAL; | |
445 | ||
e692da4d SH |
446 | ret = 0; |
447 | ||
448 | err_init: | |
449 | mutex_unlock(&imxdrm->mutex); | |
450 | ||
451 | return ret; | |
452 | } | |
453 | ||
454 | static void imx_drm_update_possible_crtcs(void) | |
455 | { | |
456 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
457 | struct imx_drm_crtc *imx_drm_crtc; | |
458 | struct imx_drm_encoder *enc; | |
459 | struct crtc_cookie *cookie; | |
460 | ||
461 | list_for_each_entry(enc, &imxdrm->encoder_list, list) { | |
462 | u32 possible_crtcs = 0; | |
463 | ||
464 | list_for_each_entry(cookie, &enc->possible_crtcs, list) { | |
465 | list_for_each_entry(imx_drm_crtc, &imxdrm->crtc_list, list) { | |
466 | if (imx_drm_crtc->cookie.cookie == cookie->cookie && | |
467 | imx_drm_crtc->cookie.id == cookie->id) { | |
468 | possible_crtcs |= 1 << imx_drm_crtc->pipe; | |
469 | } | |
470 | } | |
471 | } | |
472 | enc->encoder->possible_crtcs = possible_crtcs; | |
473 | enc->encoder->possible_clones = possible_crtcs; | |
474 | } | |
475 | } | |
476 | ||
477 | /* | |
478 | * imx_drm_add_crtc - add a new crtc | |
479 | * | |
480 | * The return value if !NULL is a cookie for the caller to pass to | |
481 | * imx_drm_remove_crtc later. | |
482 | */ | |
483 | int imx_drm_add_crtc(struct drm_crtc *crtc, | |
484 | struct imx_drm_crtc **new_crtc, | |
485 | const struct imx_drm_crtc_helper_funcs *imx_drm_helper_funcs, | |
486 | struct module *owner, void *cookie, int id) | |
487 | { | |
488 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
489 | struct imx_drm_crtc *imx_drm_crtc; | |
e692da4d SH |
490 | int ret; |
491 | ||
492 | mutex_lock(&imxdrm->mutex); | |
493 | ||
099326d8 | 494 | if (imxdrm->drm->open_count) { |
e692da4d SH |
495 | ret = -EBUSY; |
496 | goto err_busy; | |
497 | } | |
498 | ||
499 | imx_drm_crtc = kzalloc(sizeof(*imx_drm_crtc), GFP_KERNEL); | |
500 | if (!imx_drm_crtc) { | |
501 | ret = -ENOMEM; | |
502 | goto err_alloc; | |
503 | } | |
504 | ||
505 | imx_drm_crtc->imx_drm_helper_funcs = *imx_drm_helper_funcs; | |
506 | imx_drm_crtc->pipe = imxdrm->pipes++; | |
507 | imx_drm_crtc->cookie.cookie = cookie; | |
508 | imx_drm_crtc->cookie.id = id; | |
509 | ||
e692da4d SH |
510 | imx_drm_crtc->crtc = crtc; |
511 | imx_drm_crtc->imxdrm = imxdrm; | |
512 | ||
513 | imx_drm_crtc->owner = owner; | |
514 | ||
515 | list_add_tail(&imx_drm_crtc->list, &imxdrm->crtc_list); | |
516 | ||
517 | *new_crtc = imx_drm_crtc; | |
518 | ||
519 | ret = imx_drm_crtc_register(imx_drm_crtc); | |
520 | if (ret) | |
521 | goto err_register; | |
522 | ||
523 | imx_drm_update_possible_crtcs(); | |
524 | ||
525 | mutex_unlock(&imxdrm->mutex); | |
526 | ||
527 | return 0; | |
528 | ||
529 | err_register: | |
530 | kfree(imx_drm_crtc); | |
531 | err_alloc: | |
532 | err_busy: | |
533 | mutex_unlock(&imxdrm->mutex); | |
534 | return ret; | |
535 | } | |
536 | EXPORT_SYMBOL_GPL(imx_drm_add_crtc); | |
537 | ||
538 | /* | |
539 | * imx_drm_remove_crtc - remove a crtc | |
540 | */ | |
541 | int imx_drm_remove_crtc(struct imx_drm_crtc *imx_drm_crtc) | |
542 | { | |
543 | struct imx_drm_device *imxdrm = imx_drm_crtc->imxdrm; | |
544 | ||
545 | mutex_lock(&imxdrm->mutex); | |
546 | ||
547 | drm_crtc_cleanup(imx_drm_crtc->crtc); | |
548 | ||
549 | list_del(&imx_drm_crtc->list); | |
550 | ||
551 | drm_mode_group_reinit(imxdrm->drm); | |
552 | ||
553 | mutex_unlock(&imxdrm->mutex); | |
554 | ||
555 | kfree(imx_drm_crtc); | |
556 | ||
557 | return 0; | |
558 | } | |
559 | EXPORT_SYMBOL_GPL(imx_drm_remove_crtc); | |
560 | ||
561 | /* | |
562 | * imx_drm_add_encoder - add a new encoder | |
563 | */ | |
564 | int imx_drm_add_encoder(struct drm_encoder *encoder, | |
565 | struct imx_drm_encoder **newenc, struct module *owner) | |
566 | { | |
567 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
568 | struct imx_drm_encoder *imx_drm_encoder; | |
569 | int ret; | |
570 | ||
571 | mutex_lock(&imxdrm->mutex); | |
572 | ||
099326d8 | 573 | if (imxdrm->drm->open_count) { |
e692da4d SH |
574 | ret = -EBUSY; |
575 | goto err_busy; | |
576 | } | |
577 | ||
578 | imx_drm_encoder = kzalloc(sizeof(*imx_drm_encoder), GFP_KERNEL); | |
579 | if (!imx_drm_encoder) { | |
580 | ret = -ENOMEM; | |
581 | goto err_alloc; | |
582 | } | |
583 | ||
584 | imx_drm_encoder->encoder = encoder; | |
585 | imx_drm_encoder->owner = owner; | |
586 | ||
587 | ret = imx_drm_encoder_register(imx_drm_encoder); | |
588 | if (ret) { | |
e692da4d SH |
589 | ret = -ENOMEM; |
590 | goto err_register; | |
591 | } | |
592 | ||
593 | list_add_tail(&imx_drm_encoder->list, &imxdrm->encoder_list); | |
594 | ||
595 | *newenc = imx_drm_encoder; | |
596 | ||
597 | mutex_unlock(&imxdrm->mutex); | |
598 | ||
599 | return 0; | |
600 | ||
601 | err_register: | |
602 | kfree(imx_drm_encoder); | |
603 | err_alloc: | |
604 | err_busy: | |
605 | mutex_unlock(&imxdrm->mutex); | |
606 | ||
607 | return ret; | |
608 | } | |
609 | EXPORT_SYMBOL_GPL(imx_drm_add_encoder); | |
610 | ||
611 | int imx_drm_encoder_add_possible_crtcs( | |
612 | struct imx_drm_encoder *imx_drm_encoder, | |
613 | struct device_node *np) | |
614 | { | |
615 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
616 | struct of_phandle_args args; | |
617 | struct crtc_cookie *c; | |
618 | int ret = 0; | |
619 | int i; | |
620 | ||
621 | if (!list_empty(&imx_drm_encoder->possible_crtcs)) | |
622 | return -EBUSY; | |
623 | ||
624 | for (i = 0; !ret; i++) { | |
625 | ret = of_parse_phandle_with_args(np, "crtcs", | |
626 | "#crtc-cells", i, &args); | |
627 | if (ret < 0) | |
628 | break; | |
629 | ||
630 | c = kzalloc(sizeof(*c), GFP_KERNEL); | |
631 | if (!c) { | |
632 | of_node_put(args.np); | |
633 | return -ENOMEM; | |
634 | } | |
635 | ||
636 | c->cookie = args.np; | |
637 | c->id = args.args_count > 0 ? args.args[0] : 0; | |
638 | ||
639 | of_node_put(args.np); | |
640 | ||
641 | mutex_lock(&imxdrm->mutex); | |
642 | ||
643 | list_add_tail(&c->list, &imx_drm_encoder->possible_crtcs); | |
644 | ||
645 | mutex_unlock(&imxdrm->mutex); | |
646 | } | |
647 | ||
648 | imx_drm_update_possible_crtcs(); | |
649 | ||
650 | return 0; | |
651 | } | |
aecfbdb1 | 652 | EXPORT_SYMBOL_GPL(imx_drm_encoder_add_possible_crtcs); |
e692da4d SH |
653 | |
654 | int imx_drm_encoder_get_mux_id(struct imx_drm_encoder *imx_drm_encoder, | |
655 | struct drm_crtc *crtc) | |
656 | { | |
657 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
658 | struct imx_drm_crtc *imx_crtc; | |
659 | int i = 0; | |
660 | ||
e692da4d SH |
661 | list_for_each_entry(imx_crtc, &imxdrm->crtc_list, list) { |
662 | if (imx_crtc->crtc == crtc) | |
663 | goto found; | |
664 | i++; | |
665 | } | |
666 | ||
e692da4d SH |
667 | return -EINVAL; |
668 | found: | |
e692da4d SH |
669 | return i; |
670 | } | |
ea8d1583 | 671 | EXPORT_SYMBOL_GPL(imx_drm_encoder_get_mux_id); |
e692da4d SH |
672 | |
673 | /* | |
674 | * imx_drm_remove_encoder - remove an encoder | |
675 | */ | |
676 | int imx_drm_remove_encoder(struct imx_drm_encoder *imx_drm_encoder) | |
677 | { | |
678 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
679 | struct crtc_cookie *c, *tmp; | |
680 | ||
681 | mutex_lock(&imxdrm->mutex); | |
682 | ||
683 | imx_drm_encoder_unregister(imx_drm_encoder); | |
684 | ||
685 | list_del(&imx_drm_encoder->list); | |
686 | ||
687 | list_for_each_entry_safe(c, tmp, &imx_drm_encoder->possible_crtcs, | |
688 | list) | |
689 | kfree(c); | |
690 | ||
691 | mutex_unlock(&imxdrm->mutex); | |
692 | ||
693 | kfree(imx_drm_encoder); | |
694 | ||
695 | return 0; | |
696 | } | |
697 | EXPORT_SYMBOL_GPL(imx_drm_remove_encoder); | |
698 | ||
699 | /* | |
700 | * imx_drm_add_connector - add a connector | |
701 | */ | |
702 | int imx_drm_add_connector(struct drm_connector *connector, | |
703 | struct imx_drm_connector **new_con, | |
704 | struct module *owner) | |
705 | { | |
706 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
707 | struct imx_drm_connector *imx_drm_connector; | |
708 | int ret; | |
709 | ||
710 | mutex_lock(&imxdrm->mutex); | |
711 | ||
099326d8 | 712 | if (imxdrm->drm->open_count) { |
e692da4d SH |
713 | ret = -EBUSY; |
714 | goto err_busy; | |
715 | } | |
716 | ||
717 | imx_drm_connector = kzalloc(sizeof(*imx_drm_connector), GFP_KERNEL); | |
718 | if (!imx_drm_connector) { | |
719 | ret = -ENOMEM; | |
720 | goto err_alloc; | |
721 | } | |
722 | ||
723 | imx_drm_connector->connector = connector; | |
724 | imx_drm_connector->owner = owner; | |
725 | ||
726 | ret = imx_drm_connector_register(imx_drm_connector); | |
727 | if (ret) | |
728 | goto err_register; | |
729 | ||
730 | list_add_tail(&imx_drm_connector->list, &imxdrm->connector_list); | |
731 | ||
732 | *new_con = imx_drm_connector; | |
733 | ||
734 | mutex_unlock(&imxdrm->mutex); | |
735 | ||
736 | return 0; | |
737 | ||
738 | err_register: | |
739 | kfree(imx_drm_connector); | |
740 | err_alloc: | |
741 | err_busy: | |
742 | mutex_unlock(&imxdrm->mutex); | |
743 | ||
744 | return ret; | |
745 | } | |
746 | EXPORT_SYMBOL_GPL(imx_drm_add_connector); | |
747 | ||
748 | void imx_drm_fb_helper_set(struct drm_fbdev_cma *fbdev_helper) | |
749 | { | |
750 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
751 | ||
752 | imxdrm->fbhelper = fbdev_helper; | |
753 | } | |
754 | EXPORT_SYMBOL_GPL(imx_drm_fb_helper_set); | |
755 | ||
756 | /* | |
757 | * imx_drm_remove_connector - remove a connector | |
758 | */ | |
759 | int imx_drm_remove_connector(struct imx_drm_connector *imx_drm_connector) | |
760 | { | |
761 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
762 | ||
763 | mutex_lock(&imxdrm->mutex); | |
764 | ||
765 | imx_drm_connector_unregister(imx_drm_connector); | |
766 | ||
767 | list_del(&imx_drm_connector->list); | |
768 | ||
769 | mutex_unlock(&imxdrm->mutex); | |
770 | ||
771 | kfree(imx_drm_connector); | |
772 | ||
773 | return 0; | |
774 | } | |
775 | EXPORT_SYMBOL_GPL(imx_drm_remove_connector); | |
776 | ||
baa70943 | 777 | static const struct drm_ioctl_desc imx_drm_ioctls[] = { |
e692da4d SH |
778 | /* none so far */ |
779 | }; | |
780 | ||
781 | static struct drm_driver imx_drm_driver = { | |
bd3665c9 | 782 | .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME, |
e692da4d SH |
783 | .load = imx_drm_driver_load, |
784 | .unload = imx_drm_driver_unload, | |
e692da4d | 785 | .lastclose = imx_drm_driver_lastclose, |
6ee4d7fe | 786 | .preclose = imx_drm_driver_preclose, |
e692da4d SH |
787 | .gem_free_object = drm_gem_cma_free_object, |
788 | .gem_vm_ops = &drm_gem_cma_vm_ops, | |
789 | .dumb_create = drm_gem_cma_dumb_create, | |
790 | .dumb_map_offset = drm_gem_cma_dumb_map_offset, | |
43387b37 | 791 | .dumb_destroy = drm_gem_dumb_destroy, |
e692da4d | 792 | |
bd3665c9 PZ |
793 | .prime_handle_to_fd = drm_gem_prime_handle_to_fd, |
794 | .prime_fd_to_handle = drm_gem_prime_fd_to_handle, | |
795 | .gem_prime_import = drm_gem_prime_import, | |
796 | .gem_prime_export = drm_gem_prime_export, | |
797 | .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table, | |
798 | .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table, | |
799 | .gem_prime_vmap = drm_gem_cma_prime_vmap, | |
800 | .gem_prime_vunmap = drm_gem_cma_prime_vunmap, | |
801 | .gem_prime_mmap = drm_gem_cma_prime_mmap, | |
e692da4d SH |
802 | .get_vblank_counter = drm_vblank_count, |
803 | .enable_vblank = imx_drm_enable_vblank, | |
804 | .disable_vblank = imx_drm_disable_vblank, | |
805 | .ioctls = imx_drm_ioctls, | |
806 | .num_ioctls = ARRAY_SIZE(imx_drm_ioctls), | |
807 | .fops = &imx_drm_driver_fops, | |
808 | .name = "imx-drm", | |
809 | .desc = "i.MX DRM graphics", | |
810 | .date = "20120507", | |
811 | .major = 1, | |
812 | .minor = 0, | |
813 | .patchlevel = 0, | |
814 | }; | |
815 | ||
816 | static int imx_drm_platform_probe(struct platform_device *pdev) | |
817 | { | |
818 | imx_drm_device->dev = &pdev->dev; | |
819 | ||
820 | return drm_platform_init(&imx_drm_driver, pdev); | |
821 | } | |
822 | ||
823 | static int imx_drm_platform_remove(struct platform_device *pdev) | |
824 | { | |
825 | drm_platform_exit(&imx_drm_driver, pdev); | |
826 | ||
827 | return 0; | |
828 | } | |
829 | ||
830 | static struct platform_driver imx_drm_pdrv = { | |
831 | .probe = imx_drm_platform_probe, | |
99c28f10 | 832 | .remove = imx_drm_platform_remove, |
e692da4d SH |
833 | .driver = { |
834 | .owner = THIS_MODULE, | |
835 | .name = "imx-drm", | |
836 | }, | |
837 | }; | |
838 | ||
839 | static struct platform_device *imx_drm_pdev; | |
840 | ||
841 | static int __init imx_drm_init(void) | |
842 | { | |
843 | int ret; | |
844 | ||
845 | imx_drm_device = kzalloc(sizeof(*imx_drm_device), GFP_KERNEL); | |
846 | if (!imx_drm_device) | |
847 | return -ENOMEM; | |
848 | ||
849 | mutex_init(&imx_drm_device->mutex); | |
850 | INIT_LIST_HEAD(&imx_drm_device->crtc_list); | |
851 | INIT_LIST_HEAD(&imx_drm_device->connector_list); | |
852 | INIT_LIST_HEAD(&imx_drm_device->encoder_list); | |
853 | ||
854 | imx_drm_pdev = platform_device_register_simple("imx-drm", -1, NULL, 0); | |
855 | if (!imx_drm_pdev) { | |
856 | ret = -EINVAL; | |
857 | goto err_pdev; | |
858 | } | |
859 | ||
860 | imx_drm_pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32), | |
861 | ||
862 | ret = platform_driver_register(&imx_drm_pdrv); | |
863 | if (ret) | |
864 | goto err_pdrv; | |
865 | ||
866 | return 0; | |
867 | ||
868 | err_pdrv: | |
869 | platform_device_unregister(imx_drm_pdev); | |
870 | err_pdev: | |
871 | kfree(imx_drm_device); | |
872 | ||
873 | return ret; | |
874 | } | |
875 | ||
876 | static void __exit imx_drm_exit(void) | |
877 | { | |
878 | platform_device_unregister(imx_drm_pdev); | |
879 | platform_driver_unregister(&imx_drm_pdrv); | |
880 | ||
881 | kfree(imx_drm_device); | |
882 | } | |
883 | ||
884 | module_init(imx_drm_init); | |
885 | module_exit(imx_drm_exit); | |
886 | ||
887 | MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>"); | |
888 | MODULE_DESCRIPTION("i.MX drm driver core"); | |
889 | MODULE_LICENSE("GPL"); |