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 | } | |
9c74360f | 75 | EXPORT_SYMBOL_GPL(imx_drm_crtc_id); |
b8d181e4 | 76 | |
e692da4d SH |
77 | static void imx_drm_driver_lastclose(struct drm_device *drm) |
78 | { | |
79 | struct imx_drm_device *imxdrm = drm->dev_private; | |
80 | ||
81 | if (imxdrm->fbhelper) | |
82 | drm_fbdev_cma_restore_mode(imxdrm->fbhelper); | |
e692da4d SH |
83 | } |
84 | ||
85 | static int imx_drm_driver_unload(struct drm_device *drm) | |
86 | { | |
87 | struct imx_drm_device *imxdrm = drm->dev_private; | |
88 | ||
aaba4b58 DV |
89 | imx_drm_device_put(); |
90 | ||
8007875f | 91 | drm_vblank_cleanup(imxdrm->drm); |
e692da4d | 92 | drm_kms_helper_poll_fini(imxdrm->drm); |
8007875f | 93 | drm_mode_config_cleanup(imxdrm->drm); |
e692da4d SH |
94 | |
95 | return 0; | |
96 | } | |
97 | ||
98 | /* | |
99 | * We don't care at all for crtc numbers, but the core expects the | |
100 | * crtcs to be numbered | |
101 | */ | |
102 | static struct imx_drm_crtc *imx_drm_crtc_by_num(struct imx_drm_device *imxdrm, | |
103 | int num) | |
104 | { | |
105 | struct imx_drm_crtc *imx_drm_crtc; | |
106 | ||
107 | list_for_each_entry(imx_drm_crtc, &imxdrm->crtc_list, list) | |
108 | if (imx_drm_crtc->pipe == num) | |
109 | return imx_drm_crtc; | |
110 | return NULL; | |
111 | } | |
112 | ||
2ea42608 PZ |
113 | int imx_drm_crtc_panel_format_pins(struct drm_crtc *crtc, u32 encoder_type, |
114 | u32 interface_pix_fmt, int hsync_pin, int vsync_pin) | |
e692da4d SH |
115 | { |
116 | struct imx_drm_device *imxdrm = crtc->dev->dev_private; | |
117 | struct imx_drm_crtc *imx_crtc; | |
118 | struct imx_drm_crtc_helper_funcs *helper; | |
119 | ||
e692da4d SH |
120 | list_for_each_entry(imx_crtc, &imxdrm->crtc_list, list) |
121 | if (imx_crtc->crtc == crtc) | |
122 | goto found; | |
123 | ||
e692da4d SH |
124 | return -EINVAL; |
125 | found: | |
e692da4d SH |
126 | helper = &imx_crtc->imx_drm_helper_funcs; |
127 | if (helper->set_interface_pix_fmt) | |
128 | return helper->set_interface_pix_fmt(crtc, | |
2ea42608 PZ |
129 | encoder_type, interface_pix_fmt, |
130 | hsync_pin, vsync_pin); | |
e692da4d SH |
131 | return 0; |
132 | } | |
2ea42608 PZ |
133 | EXPORT_SYMBOL_GPL(imx_drm_crtc_panel_format_pins); |
134 | ||
135 | int imx_drm_crtc_panel_format(struct drm_crtc *crtc, u32 encoder_type, | |
136 | u32 interface_pix_fmt) | |
137 | { | |
138 | return imx_drm_crtc_panel_format_pins(crtc, encoder_type, | |
079461bf | 139 | interface_pix_fmt, 2, 3); |
2ea42608 | 140 | } |
aecfbdb1 | 141 | EXPORT_SYMBOL_GPL(imx_drm_crtc_panel_format); |
e692da4d SH |
142 | |
143 | int imx_drm_crtc_vblank_get(struct imx_drm_crtc *imx_drm_crtc) | |
144 | { | |
145 | return drm_vblank_get(imx_drm_crtc->imxdrm->drm, imx_drm_crtc->pipe); | |
146 | } | |
147 | EXPORT_SYMBOL_GPL(imx_drm_crtc_vblank_get); | |
148 | ||
149 | void imx_drm_crtc_vblank_put(struct imx_drm_crtc *imx_drm_crtc) | |
150 | { | |
151 | drm_vblank_put(imx_drm_crtc->imxdrm->drm, imx_drm_crtc->pipe); | |
152 | } | |
153 | EXPORT_SYMBOL_GPL(imx_drm_crtc_vblank_put); | |
154 | ||
155 | void imx_drm_handle_vblank(struct imx_drm_crtc *imx_drm_crtc) | |
156 | { | |
157 | drm_handle_vblank(imx_drm_crtc->imxdrm->drm, imx_drm_crtc->pipe); | |
158 | } | |
159 | EXPORT_SYMBOL_GPL(imx_drm_handle_vblank); | |
160 | ||
161 | static int imx_drm_enable_vblank(struct drm_device *drm, int crtc) | |
162 | { | |
163 | struct imx_drm_device *imxdrm = drm->dev_private; | |
164 | struct imx_drm_crtc *imx_drm_crtc; | |
165 | int ret; | |
166 | ||
167 | imx_drm_crtc = imx_drm_crtc_by_num(imxdrm, crtc); | |
168 | if (!imx_drm_crtc) | |
169 | return -EINVAL; | |
170 | ||
171 | if (!imx_drm_crtc->imx_drm_helper_funcs.enable_vblank) | |
172 | return -ENOSYS; | |
173 | ||
174 | ret = imx_drm_crtc->imx_drm_helper_funcs.enable_vblank( | |
175 | imx_drm_crtc->crtc); | |
176 | ||
177 | return ret; | |
178 | } | |
179 | ||
180 | static void imx_drm_disable_vblank(struct drm_device *drm, int crtc) | |
181 | { | |
182 | struct imx_drm_device *imxdrm = drm->dev_private; | |
183 | struct imx_drm_crtc *imx_drm_crtc; | |
184 | ||
185 | imx_drm_crtc = imx_drm_crtc_by_num(imxdrm, crtc); | |
186 | if (!imx_drm_crtc) | |
187 | return; | |
188 | ||
189 | if (!imx_drm_crtc->imx_drm_helper_funcs.disable_vblank) | |
190 | return; | |
191 | ||
192 | imx_drm_crtc->imx_drm_helper_funcs.disable_vblank(imx_drm_crtc->crtc); | |
193 | } | |
194 | ||
6ee4d7fe SH |
195 | static void imx_drm_driver_preclose(struct drm_device *drm, |
196 | struct drm_file *file) | |
197 | { | |
198 | int i; | |
199 | ||
200 | if (!file->is_master) | |
201 | return; | |
202 | ||
203 | for (i = 0; i < 4; i++) | |
204 | imx_drm_disable_vblank(drm , i); | |
205 | } | |
206 | ||
e692da4d SH |
207 | static const struct file_operations imx_drm_driver_fops = { |
208 | .owner = THIS_MODULE, | |
209 | .open = drm_open, | |
210 | .release = drm_release, | |
211 | .unlocked_ioctl = drm_ioctl, | |
212 | .mmap = drm_gem_cma_mmap, | |
213 | .poll = drm_poll, | |
e692da4d SH |
214 | .read = drm_read, |
215 | .llseek = noop_llseek, | |
216 | }; | |
217 | ||
218 | static struct imx_drm_device *imx_drm_device; | |
219 | ||
220 | static struct imx_drm_device *__imx_drm_device(void) | |
221 | { | |
222 | return imx_drm_device; | |
223 | } | |
224 | ||
225 | struct drm_device *imx_drm_device_get(void) | |
226 | { | |
227 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
228 | struct imx_drm_encoder *enc; | |
229 | struct imx_drm_connector *con; | |
230 | struct imx_drm_crtc *crtc; | |
231 | ||
e692da4d SH |
232 | list_for_each_entry(enc, &imxdrm->encoder_list, list) { |
233 | if (!try_module_get(enc->owner)) { | |
234 | dev_err(imxdrm->dev, "could not get module %s\n", | |
235 | module_name(enc->owner)); | |
236 | goto unwind_enc; | |
237 | } | |
238 | } | |
239 | ||
240 | list_for_each_entry(con, &imxdrm->connector_list, list) { | |
241 | if (!try_module_get(con->owner)) { | |
242 | dev_err(imxdrm->dev, "could not get module %s\n", | |
243 | module_name(con->owner)); | |
244 | goto unwind_con; | |
245 | } | |
246 | } | |
247 | ||
248 | list_for_each_entry(crtc, &imxdrm->crtc_list, list) { | |
249 | if (!try_module_get(crtc->owner)) { | |
250 | dev_err(imxdrm->dev, "could not get module %s\n", | |
251 | module_name(crtc->owner)); | |
252 | goto unwind_crtc; | |
253 | } | |
254 | } | |
255 | ||
e692da4d SH |
256 | return imxdrm->drm; |
257 | ||
258 | unwind_crtc: | |
259 | list_for_each_entry_continue_reverse(crtc, &imxdrm->crtc_list, list) | |
260 | module_put(crtc->owner); | |
261 | unwind_con: | |
262 | list_for_each_entry_continue_reverse(con, &imxdrm->connector_list, list) | |
263 | module_put(con->owner); | |
264 | unwind_enc: | |
265 | list_for_each_entry_continue_reverse(enc, &imxdrm->encoder_list, list) | |
266 | module_put(enc->owner); | |
267 | ||
268 | mutex_unlock(&imxdrm->mutex); | |
269 | ||
270 | return NULL; | |
271 | ||
272 | } | |
273 | EXPORT_SYMBOL_GPL(imx_drm_device_get); | |
274 | ||
275 | void imx_drm_device_put(void) | |
276 | { | |
277 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
278 | struct imx_drm_encoder *enc; | |
279 | struct imx_drm_connector *con; | |
280 | struct imx_drm_crtc *crtc; | |
281 | ||
282 | mutex_lock(&imxdrm->mutex); | |
283 | ||
284 | list_for_each_entry(crtc, &imxdrm->crtc_list, list) | |
285 | module_put(crtc->owner); | |
286 | ||
287 | list_for_each_entry(con, &imxdrm->connector_list, list) | |
288 | module_put(con->owner); | |
289 | ||
290 | list_for_each_entry(enc, &imxdrm->encoder_list, list) | |
291 | module_put(enc->owner); | |
292 | ||
e692da4d SH |
293 | mutex_unlock(&imxdrm->mutex); |
294 | } | |
295 | EXPORT_SYMBOL_GPL(imx_drm_device_put); | |
296 | ||
297 | static int drm_mode_group_reinit(struct drm_device *dev) | |
298 | { | |
299 | struct drm_mode_group *group = &dev->primary->mode_group; | |
300 | uint32_t *id_list = group->id_list; | |
301 | int ret; | |
302 | ||
303 | ret = drm_mode_group_init_legacy_group(dev, group); | |
304 | if (ret < 0) | |
305 | return ret; | |
306 | ||
307 | kfree(id_list); | |
308 | return 0; | |
309 | } | |
310 | ||
311 | /* | |
312 | * register an encoder to the drm core | |
313 | */ | |
314 | static int imx_drm_encoder_register(struct imx_drm_encoder *imx_drm_encoder) | |
315 | { | |
316 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
317 | ||
318 | INIT_LIST_HEAD(&imx_drm_encoder->possible_crtcs); | |
319 | ||
320 | drm_encoder_init(imxdrm->drm, imx_drm_encoder->encoder, | |
321 | imx_drm_encoder->encoder->funcs, | |
322 | imx_drm_encoder->encoder->encoder_type); | |
323 | ||
324 | drm_mode_group_reinit(imxdrm->drm); | |
325 | ||
326 | return 0; | |
327 | } | |
328 | ||
329 | /* | |
330 | * unregister an encoder from the drm core | |
331 | */ | |
332 | static void imx_drm_encoder_unregister(struct imx_drm_encoder | |
333 | *imx_drm_encoder) | |
334 | { | |
335 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
336 | ||
337 | drm_encoder_cleanup(imx_drm_encoder->encoder); | |
338 | ||
339 | drm_mode_group_reinit(imxdrm->drm); | |
340 | } | |
341 | ||
342 | /* | |
343 | * register a connector to the drm core | |
344 | */ | |
345 | static int imx_drm_connector_register( | |
346 | struct imx_drm_connector *imx_drm_connector) | |
347 | { | |
348 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
349 | ||
350 | drm_connector_init(imxdrm->drm, imx_drm_connector->connector, | |
351 | imx_drm_connector->connector->funcs, | |
352 | imx_drm_connector->connector->connector_type); | |
353 | drm_mode_group_reinit(imxdrm->drm); | |
354 | ||
355 | return drm_sysfs_connector_add(imx_drm_connector->connector); | |
356 | } | |
357 | ||
358 | /* | |
359 | * unregister a connector from the drm core | |
360 | */ | |
361 | static void imx_drm_connector_unregister( | |
362 | struct imx_drm_connector *imx_drm_connector) | |
363 | { | |
364 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
365 | ||
366 | drm_sysfs_connector_remove(imx_drm_connector->connector); | |
367 | drm_connector_cleanup(imx_drm_connector->connector); | |
368 | ||
369 | drm_mode_group_reinit(imxdrm->drm); | |
370 | } | |
371 | ||
372 | /* | |
373 | * register a crtc to the drm core | |
374 | */ | |
375 | static int imx_drm_crtc_register(struct imx_drm_crtc *imx_drm_crtc) | |
376 | { | |
377 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
378 | int ret; | |
379 | ||
380 | drm_crtc_init(imxdrm->drm, imx_drm_crtc->crtc, | |
381 | imx_drm_crtc->imx_drm_helper_funcs.crtc_funcs); | |
382 | ret = drm_mode_crtc_set_gamma_size(imx_drm_crtc->crtc, 256); | |
383 | if (ret) | |
384 | return ret; | |
385 | ||
386 | drm_crtc_helper_add(imx_drm_crtc->crtc, | |
387 | imx_drm_crtc->imx_drm_helper_funcs.crtc_helper_funcs); | |
388 | ||
389 | drm_mode_group_reinit(imxdrm->drm); | |
390 | ||
391 | return 0; | |
392 | } | |
393 | ||
394 | /* | |
395 | * Called by the CRTC driver when all CRTCs are registered. This | |
396 | * puts all the pieces together and initializes the driver. | |
397 | * Once this is called no more CRTCs can be registered since | |
398 | * the drm core has hardcoded the number of crtcs in several | |
399 | * places. | |
400 | */ | |
401 | static int imx_drm_driver_load(struct drm_device *drm, unsigned long flags) | |
402 | { | |
403 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
404 | int ret; | |
405 | ||
406 | imxdrm->drm = drm; | |
407 | ||
408 | drm->dev_private = imxdrm; | |
409 | ||
410 | /* | |
411 | * enable drm irq mode. | |
4423843c | 412 | * - with irq_enabled = true, we can use the vblank feature. |
e692da4d SH |
413 | * |
414 | * P.S. note that we wouldn't use drm irq handler but | |
415 | * just specific driver own one instead because | |
416 | * drm framework supports only one irq handler and | |
417 | * drivers can well take care of their interrupts | |
418 | */ | |
4423843c | 419 | drm->irq_enabled = true; |
e692da4d SH |
420 | |
421 | drm_mode_config_init(drm); | |
422 | imx_drm_mode_config_init(drm); | |
423 | ||
424 | mutex_lock(&imxdrm->mutex); | |
425 | ||
426 | drm_kms_helper_poll_init(imxdrm->drm); | |
427 | ||
428 | /* setup the grouping for the legacy output */ | |
429 | ret = drm_mode_group_init_legacy_group(imxdrm->drm, | |
430 | &imxdrm->drm->primary->mode_group); | |
431 | if (ret) | |
8007875f | 432 | goto err_kms; |
e692da4d SH |
433 | |
434 | ret = drm_vblank_init(imxdrm->drm, MAX_CRTC); | |
435 | if (ret) | |
8007875f | 436 | goto err_kms; |
e692da4d SH |
437 | |
438 | /* | |
ba0bf120 | 439 | * with vblank_disable_allowed = true, vblank interrupt will be disabled |
e692da4d SH |
440 | * by drm timer once a current process gives up ownership of |
441 | * vblank event.(after drm_vblank_put function is called) | |
442 | */ | |
ba0bf120 | 443 | imxdrm->drm->vblank_disable_allowed = true; |
e692da4d | 444 | |
8007875f | 445 | if (!imx_drm_device_get()) { |
aaba4b58 | 446 | ret = -EINVAL; |
8007875f RK |
447 | goto err_vblank; |
448 | } | |
aaba4b58 | 449 | |
8007875f RK |
450 | mutex_unlock(&imxdrm->mutex); |
451 | return 0; | |
e692da4d | 452 | |
8007875f RK |
453 | err_vblank: |
454 | drm_vblank_cleanup(drm); | |
455 | err_kms: | |
456 | drm_kms_helper_poll_fini(drm); | |
457 | drm_mode_config_cleanup(drm); | |
e692da4d SH |
458 | mutex_unlock(&imxdrm->mutex); |
459 | ||
460 | return ret; | |
461 | } | |
462 | ||
463 | static void imx_drm_update_possible_crtcs(void) | |
464 | { | |
465 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
466 | struct imx_drm_crtc *imx_drm_crtc; | |
467 | struct imx_drm_encoder *enc; | |
468 | struct crtc_cookie *cookie; | |
469 | ||
470 | list_for_each_entry(enc, &imxdrm->encoder_list, list) { | |
471 | u32 possible_crtcs = 0; | |
472 | ||
473 | list_for_each_entry(cookie, &enc->possible_crtcs, list) { | |
474 | list_for_each_entry(imx_drm_crtc, &imxdrm->crtc_list, list) { | |
475 | if (imx_drm_crtc->cookie.cookie == cookie->cookie && | |
476 | imx_drm_crtc->cookie.id == cookie->id) { | |
477 | possible_crtcs |= 1 << imx_drm_crtc->pipe; | |
478 | } | |
479 | } | |
480 | } | |
481 | enc->encoder->possible_crtcs = possible_crtcs; | |
482 | enc->encoder->possible_clones = possible_crtcs; | |
483 | } | |
484 | } | |
485 | ||
486 | /* | |
487 | * imx_drm_add_crtc - add a new crtc | |
488 | * | |
489 | * The return value if !NULL is a cookie for the caller to pass to | |
490 | * imx_drm_remove_crtc later. | |
491 | */ | |
492 | int imx_drm_add_crtc(struct drm_crtc *crtc, | |
493 | struct imx_drm_crtc **new_crtc, | |
494 | const struct imx_drm_crtc_helper_funcs *imx_drm_helper_funcs, | |
495 | struct module *owner, void *cookie, int id) | |
496 | { | |
497 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
498 | struct imx_drm_crtc *imx_drm_crtc; | |
e692da4d SH |
499 | int ret; |
500 | ||
501 | mutex_lock(&imxdrm->mutex); | |
502 | ||
099326d8 | 503 | if (imxdrm->drm->open_count) { |
e692da4d SH |
504 | ret = -EBUSY; |
505 | goto err_busy; | |
506 | } | |
507 | ||
508 | imx_drm_crtc = kzalloc(sizeof(*imx_drm_crtc), GFP_KERNEL); | |
509 | if (!imx_drm_crtc) { | |
510 | ret = -ENOMEM; | |
511 | goto err_alloc; | |
512 | } | |
513 | ||
514 | imx_drm_crtc->imx_drm_helper_funcs = *imx_drm_helper_funcs; | |
515 | imx_drm_crtc->pipe = imxdrm->pipes++; | |
516 | imx_drm_crtc->cookie.cookie = cookie; | |
517 | imx_drm_crtc->cookie.id = id; | |
518 | ||
e692da4d SH |
519 | imx_drm_crtc->crtc = crtc; |
520 | imx_drm_crtc->imxdrm = imxdrm; | |
521 | ||
522 | imx_drm_crtc->owner = owner; | |
523 | ||
524 | list_add_tail(&imx_drm_crtc->list, &imxdrm->crtc_list); | |
525 | ||
526 | *new_crtc = imx_drm_crtc; | |
527 | ||
528 | ret = imx_drm_crtc_register(imx_drm_crtc); | |
529 | if (ret) | |
530 | goto err_register; | |
531 | ||
532 | imx_drm_update_possible_crtcs(); | |
533 | ||
534 | mutex_unlock(&imxdrm->mutex); | |
535 | ||
536 | return 0; | |
537 | ||
538 | err_register: | |
82832046 | 539 | list_del(&imx_drm_crtc->list); |
e692da4d SH |
540 | kfree(imx_drm_crtc); |
541 | err_alloc: | |
542 | err_busy: | |
543 | mutex_unlock(&imxdrm->mutex); | |
544 | return ret; | |
545 | } | |
546 | EXPORT_SYMBOL_GPL(imx_drm_add_crtc); | |
547 | ||
548 | /* | |
549 | * imx_drm_remove_crtc - remove a crtc | |
550 | */ | |
551 | int imx_drm_remove_crtc(struct imx_drm_crtc *imx_drm_crtc) | |
552 | { | |
553 | struct imx_drm_device *imxdrm = imx_drm_crtc->imxdrm; | |
554 | ||
555 | mutex_lock(&imxdrm->mutex); | |
556 | ||
557 | drm_crtc_cleanup(imx_drm_crtc->crtc); | |
558 | ||
559 | list_del(&imx_drm_crtc->list); | |
560 | ||
561 | drm_mode_group_reinit(imxdrm->drm); | |
562 | ||
563 | mutex_unlock(&imxdrm->mutex); | |
564 | ||
565 | kfree(imx_drm_crtc); | |
566 | ||
567 | return 0; | |
568 | } | |
569 | EXPORT_SYMBOL_GPL(imx_drm_remove_crtc); | |
570 | ||
571 | /* | |
572 | * imx_drm_add_encoder - add a new encoder | |
573 | */ | |
574 | int imx_drm_add_encoder(struct drm_encoder *encoder, | |
575 | struct imx_drm_encoder **newenc, struct module *owner) | |
576 | { | |
577 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
578 | struct imx_drm_encoder *imx_drm_encoder; | |
579 | int ret; | |
580 | ||
581 | mutex_lock(&imxdrm->mutex); | |
582 | ||
099326d8 | 583 | if (imxdrm->drm->open_count) { |
e692da4d SH |
584 | ret = -EBUSY; |
585 | goto err_busy; | |
586 | } | |
587 | ||
588 | imx_drm_encoder = kzalloc(sizeof(*imx_drm_encoder), GFP_KERNEL); | |
589 | if (!imx_drm_encoder) { | |
590 | ret = -ENOMEM; | |
591 | goto err_alloc; | |
592 | } | |
593 | ||
594 | imx_drm_encoder->encoder = encoder; | |
595 | imx_drm_encoder->owner = owner; | |
596 | ||
597 | ret = imx_drm_encoder_register(imx_drm_encoder); | |
598 | if (ret) { | |
e692da4d SH |
599 | ret = -ENOMEM; |
600 | goto err_register; | |
601 | } | |
602 | ||
603 | list_add_tail(&imx_drm_encoder->list, &imxdrm->encoder_list); | |
604 | ||
605 | *newenc = imx_drm_encoder; | |
606 | ||
607 | mutex_unlock(&imxdrm->mutex); | |
608 | ||
609 | return 0; | |
610 | ||
611 | err_register: | |
612 | kfree(imx_drm_encoder); | |
613 | err_alloc: | |
614 | err_busy: | |
615 | mutex_unlock(&imxdrm->mutex); | |
616 | ||
617 | return ret; | |
618 | } | |
619 | EXPORT_SYMBOL_GPL(imx_drm_add_encoder); | |
620 | ||
621 | int imx_drm_encoder_add_possible_crtcs( | |
622 | struct imx_drm_encoder *imx_drm_encoder, | |
623 | struct device_node *np) | |
624 | { | |
625 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
626 | struct of_phandle_args args; | |
627 | struct crtc_cookie *c; | |
628 | int ret = 0; | |
629 | int i; | |
630 | ||
631 | if (!list_empty(&imx_drm_encoder->possible_crtcs)) | |
632 | return -EBUSY; | |
633 | ||
634 | for (i = 0; !ret; i++) { | |
635 | ret = of_parse_phandle_with_args(np, "crtcs", | |
636 | "#crtc-cells", i, &args); | |
637 | if (ret < 0) | |
638 | break; | |
639 | ||
640 | c = kzalloc(sizeof(*c), GFP_KERNEL); | |
641 | if (!c) { | |
642 | of_node_put(args.np); | |
643 | return -ENOMEM; | |
644 | } | |
645 | ||
646 | c->cookie = args.np; | |
647 | c->id = args.args_count > 0 ? args.args[0] : 0; | |
648 | ||
649 | of_node_put(args.np); | |
650 | ||
651 | mutex_lock(&imxdrm->mutex); | |
652 | ||
653 | list_add_tail(&c->list, &imx_drm_encoder->possible_crtcs); | |
654 | ||
655 | mutex_unlock(&imxdrm->mutex); | |
656 | } | |
657 | ||
658 | imx_drm_update_possible_crtcs(); | |
659 | ||
660 | return 0; | |
661 | } | |
aecfbdb1 | 662 | EXPORT_SYMBOL_GPL(imx_drm_encoder_add_possible_crtcs); |
e692da4d SH |
663 | |
664 | int imx_drm_encoder_get_mux_id(struct imx_drm_encoder *imx_drm_encoder, | |
665 | struct drm_crtc *crtc) | |
666 | { | |
667 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
668 | struct imx_drm_crtc *imx_crtc; | |
669 | int i = 0; | |
670 | ||
e692da4d SH |
671 | list_for_each_entry(imx_crtc, &imxdrm->crtc_list, list) { |
672 | if (imx_crtc->crtc == crtc) | |
673 | goto found; | |
674 | i++; | |
675 | } | |
676 | ||
e692da4d SH |
677 | return -EINVAL; |
678 | found: | |
e692da4d SH |
679 | return i; |
680 | } | |
ea8d1583 | 681 | EXPORT_SYMBOL_GPL(imx_drm_encoder_get_mux_id); |
e692da4d SH |
682 | |
683 | /* | |
684 | * imx_drm_remove_encoder - remove an encoder | |
685 | */ | |
686 | int imx_drm_remove_encoder(struct imx_drm_encoder *imx_drm_encoder) | |
687 | { | |
688 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
689 | struct crtc_cookie *c, *tmp; | |
690 | ||
691 | mutex_lock(&imxdrm->mutex); | |
692 | ||
693 | imx_drm_encoder_unregister(imx_drm_encoder); | |
694 | ||
695 | list_del(&imx_drm_encoder->list); | |
696 | ||
697 | list_for_each_entry_safe(c, tmp, &imx_drm_encoder->possible_crtcs, | |
698 | list) | |
699 | kfree(c); | |
700 | ||
701 | mutex_unlock(&imxdrm->mutex); | |
702 | ||
703 | kfree(imx_drm_encoder); | |
704 | ||
705 | return 0; | |
706 | } | |
707 | EXPORT_SYMBOL_GPL(imx_drm_remove_encoder); | |
708 | ||
709 | /* | |
710 | * imx_drm_add_connector - add a connector | |
711 | */ | |
712 | int imx_drm_add_connector(struct drm_connector *connector, | |
713 | struct imx_drm_connector **new_con, | |
714 | struct module *owner) | |
715 | { | |
716 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
717 | struct imx_drm_connector *imx_drm_connector; | |
718 | int ret; | |
719 | ||
720 | mutex_lock(&imxdrm->mutex); | |
721 | ||
099326d8 | 722 | if (imxdrm->drm->open_count) { |
e692da4d SH |
723 | ret = -EBUSY; |
724 | goto err_busy; | |
725 | } | |
726 | ||
727 | imx_drm_connector = kzalloc(sizeof(*imx_drm_connector), GFP_KERNEL); | |
728 | if (!imx_drm_connector) { | |
729 | ret = -ENOMEM; | |
730 | goto err_alloc; | |
731 | } | |
732 | ||
733 | imx_drm_connector->connector = connector; | |
734 | imx_drm_connector->owner = owner; | |
735 | ||
736 | ret = imx_drm_connector_register(imx_drm_connector); | |
737 | if (ret) | |
738 | goto err_register; | |
739 | ||
740 | list_add_tail(&imx_drm_connector->list, &imxdrm->connector_list); | |
741 | ||
742 | *new_con = imx_drm_connector; | |
743 | ||
744 | mutex_unlock(&imxdrm->mutex); | |
745 | ||
746 | return 0; | |
747 | ||
748 | err_register: | |
749 | kfree(imx_drm_connector); | |
750 | err_alloc: | |
751 | err_busy: | |
752 | mutex_unlock(&imxdrm->mutex); | |
753 | ||
754 | return ret; | |
755 | } | |
756 | EXPORT_SYMBOL_GPL(imx_drm_add_connector); | |
757 | ||
758 | void imx_drm_fb_helper_set(struct drm_fbdev_cma *fbdev_helper) | |
759 | { | |
760 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
761 | ||
762 | imxdrm->fbhelper = fbdev_helper; | |
763 | } | |
764 | EXPORT_SYMBOL_GPL(imx_drm_fb_helper_set); | |
765 | ||
766 | /* | |
767 | * imx_drm_remove_connector - remove a connector | |
768 | */ | |
769 | int imx_drm_remove_connector(struct imx_drm_connector *imx_drm_connector) | |
770 | { | |
771 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
772 | ||
773 | mutex_lock(&imxdrm->mutex); | |
774 | ||
775 | imx_drm_connector_unregister(imx_drm_connector); | |
776 | ||
777 | list_del(&imx_drm_connector->list); | |
778 | ||
779 | mutex_unlock(&imxdrm->mutex); | |
780 | ||
781 | kfree(imx_drm_connector); | |
782 | ||
783 | return 0; | |
784 | } | |
785 | EXPORT_SYMBOL_GPL(imx_drm_remove_connector); | |
786 | ||
baa70943 | 787 | static const struct drm_ioctl_desc imx_drm_ioctls[] = { |
e692da4d SH |
788 | /* none so far */ |
789 | }; | |
790 | ||
791 | static struct drm_driver imx_drm_driver = { | |
bd3665c9 | 792 | .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME, |
e692da4d SH |
793 | .load = imx_drm_driver_load, |
794 | .unload = imx_drm_driver_unload, | |
e692da4d | 795 | .lastclose = imx_drm_driver_lastclose, |
6ee4d7fe | 796 | .preclose = imx_drm_driver_preclose, |
e692da4d SH |
797 | .gem_free_object = drm_gem_cma_free_object, |
798 | .gem_vm_ops = &drm_gem_cma_vm_ops, | |
799 | .dumb_create = drm_gem_cma_dumb_create, | |
800 | .dumb_map_offset = drm_gem_cma_dumb_map_offset, | |
43387b37 | 801 | .dumb_destroy = drm_gem_dumb_destroy, |
e692da4d | 802 | |
bd3665c9 PZ |
803 | .prime_handle_to_fd = drm_gem_prime_handle_to_fd, |
804 | .prime_fd_to_handle = drm_gem_prime_fd_to_handle, | |
805 | .gem_prime_import = drm_gem_prime_import, | |
806 | .gem_prime_export = drm_gem_prime_export, | |
807 | .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table, | |
808 | .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table, | |
809 | .gem_prime_vmap = drm_gem_cma_prime_vmap, | |
810 | .gem_prime_vunmap = drm_gem_cma_prime_vunmap, | |
811 | .gem_prime_mmap = drm_gem_cma_prime_mmap, | |
e692da4d SH |
812 | .get_vblank_counter = drm_vblank_count, |
813 | .enable_vblank = imx_drm_enable_vblank, | |
814 | .disable_vblank = imx_drm_disable_vblank, | |
815 | .ioctls = imx_drm_ioctls, | |
816 | .num_ioctls = ARRAY_SIZE(imx_drm_ioctls), | |
817 | .fops = &imx_drm_driver_fops, | |
818 | .name = "imx-drm", | |
819 | .desc = "i.MX DRM graphics", | |
820 | .date = "20120507", | |
821 | .major = 1, | |
822 | .minor = 0, | |
823 | .patchlevel = 0, | |
824 | }; | |
825 | ||
826 | static int imx_drm_platform_probe(struct platform_device *pdev) | |
827 | { | |
4cdbb4ff RK |
828 | int ret; |
829 | ||
830 | ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); | |
831 | if (ret) | |
832 | return ret; | |
833 | ||
e692da4d SH |
834 | imx_drm_device->dev = &pdev->dev; |
835 | ||
836 | return drm_platform_init(&imx_drm_driver, pdev); | |
837 | } | |
838 | ||
839 | static int imx_drm_platform_remove(struct platform_device *pdev) | |
840 | { | |
841 | drm_platform_exit(&imx_drm_driver, pdev); | |
842 | ||
843 | return 0; | |
844 | } | |
845 | ||
846 | static struct platform_driver imx_drm_pdrv = { | |
847 | .probe = imx_drm_platform_probe, | |
99c28f10 | 848 | .remove = imx_drm_platform_remove, |
e692da4d SH |
849 | .driver = { |
850 | .owner = THIS_MODULE, | |
851 | .name = "imx-drm", | |
852 | }, | |
853 | }; | |
854 | ||
855 | static struct platform_device *imx_drm_pdev; | |
856 | ||
857 | static int __init imx_drm_init(void) | |
858 | { | |
859 | int ret; | |
860 | ||
861 | imx_drm_device = kzalloc(sizeof(*imx_drm_device), GFP_KERNEL); | |
862 | if (!imx_drm_device) | |
863 | return -ENOMEM; | |
864 | ||
865 | mutex_init(&imx_drm_device->mutex); | |
866 | INIT_LIST_HEAD(&imx_drm_device->crtc_list); | |
867 | INIT_LIST_HEAD(&imx_drm_device->connector_list); | |
868 | INIT_LIST_HEAD(&imx_drm_device->encoder_list); | |
869 | ||
870 | imx_drm_pdev = platform_device_register_simple("imx-drm", -1, NULL, 0); | |
2eaaccde WY |
871 | if (IS_ERR(imx_drm_pdev)) { |
872 | ret = PTR_ERR(imx_drm_pdev); | |
e692da4d SH |
873 | goto err_pdev; |
874 | } | |
875 | ||
e692da4d SH |
876 | ret = platform_driver_register(&imx_drm_pdrv); |
877 | if (ret) | |
878 | goto err_pdrv; | |
879 | ||
880 | return 0; | |
881 | ||
882 | err_pdrv: | |
883 | platform_device_unregister(imx_drm_pdev); | |
884 | err_pdev: | |
885 | kfree(imx_drm_device); | |
886 | ||
887 | return ret; | |
888 | } | |
889 | ||
890 | static void __exit imx_drm_exit(void) | |
891 | { | |
892 | platform_device_unregister(imx_drm_pdev); | |
893 | platform_driver_unregister(&imx_drm_pdrv); | |
894 | ||
895 | kfree(imx_drm_device); | |
896 | } | |
897 | ||
898 | module_init(imx_drm_init); | |
899 | module_exit(imx_drm_exit); | |
900 | ||
901 | MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>"); | |
902 | MODULE_DESCRIPTION("i.MX drm driver core"); | |
903 | MODULE_LICENSE("GPL"); |