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 | ||
942325c8 RK |
203 | for (i = 0; i < MAX_CRTC; i++) |
204 | imx_drm_disable_vblank(drm, i); | |
6ee4d7fe SH |
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 | ||
e692da4d SH |
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 | ||
9fe73d46 RK |
387 | drm_crtc_init(imxdrm->drm, imx_drm_crtc->crtc, |
388 | imx_drm_crtc->imx_drm_helper_funcs.crtc_funcs); | |
389 | ||
e692da4d SH |
390 | drm_mode_group_reinit(imxdrm->drm); |
391 | ||
392 | return 0; | |
393 | } | |
394 | ||
395 | /* | |
396 | * Called by the CRTC driver when all CRTCs are registered. This | |
397 | * puts all the pieces together and initializes the driver. | |
398 | * Once this is called no more CRTCs can be registered since | |
399 | * the drm core has hardcoded the number of crtcs in several | |
400 | * places. | |
401 | */ | |
402 | static int imx_drm_driver_load(struct drm_device *drm, unsigned long flags) | |
403 | { | |
404 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
405 | int ret; | |
406 | ||
407 | imxdrm->drm = drm; | |
408 | ||
409 | drm->dev_private = imxdrm; | |
410 | ||
411 | /* | |
412 | * enable drm irq mode. | |
4423843c | 413 | * - with irq_enabled = true, we can use the vblank feature. |
e692da4d SH |
414 | * |
415 | * P.S. note that we wouldn't use drm irq handler but | |
416 | * just specific driver own one instead because | |
417 | * drm framework supports only one irq handler and | |
418 | * drivers can well take care of their interrupts | |
419 | */ | |
4423843c | 420 | drm->irq_enabled = true; |
e692da4d SH |
421 | |
422 | drm_mode_config_init(drm); | |
423 | imx_drm_mode_config_init(drm); | |
424 | ||
425 | mutex_lock(&imxdrm->mutex); | |
426 | ||
427 | drm_kms_helper_poll_init(imxdrm->drm); | |
428 | ||
429 | /* setup the grouping for the legacy output */ | |
430 | ret = drm_mode_group_init_legacy_group(imxdrm->drm, | |
431 | &imxdrm->drm->primary->mode_group); | |
432 | if (ret) | |
8007875f | 433 | goto err_kms; |
e692da4d SH |
434 | |
435 | ret = drm_vblank_init(imxdrm->drm, MAX_CRTC); | |
436 | if (ret) | |
8007875f | 437 | goto err_kms; |
e692da4d SH |
438 | |
439 | /* | |
ba0bf120 | 440 | * with vblank_disable_allowed = true, vblank interrupt will be disabled |
e692da4d SH |
441 | * by drm timer once a current process gives up ownership of |
442 | * vblank event.(after drm_vblank_put function is called) | |
443 | */ | |
ba0bf120 | 444 | imxdrm->drm->vblank_disable_allowed = true; |
e692da4d | 445 | |
8007875f | 446 | if (!imx_drm_device_get()) { |
aaba4b58 | 447 | ret = -EINVAL; |
8007875f RK |
448 | goto err_vblank; |
449 | } | |
aaba4b58 | 450 | |
a72f8bee | 451 | platform_set_drvdata(drm->platformdev, drm); |
8007875f RK |
452 | mutex_unlock(&imxdrm->mutex); |
453 | return 0; | |
a72f8bee | 454 | |
8007875f RK |
455 | err_vblank: |
456 | drm_vblank_cleanup(drm); | |
457 | err_kms: | |
458 | drm_kms_helper_poll_fini(drm); | |
459 | drm_mode_config_cleanup(drm); | |
e692da4d SH |
460 | mutex_unlock(&imxdrm->mutex); |
461 | ||
462 | return ret; | |
463 | } | |
464 | ||
465 | static void imx_drm_update_possible_crtcs(void) | |
466 | { | |
467 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
468 | struct imx_drm_crtc *imx_drm_crtc; | |
469 | struct imx_drm_encoder *enc; | |
470 | struct crtc_cookie *cookie; | |
471 | ||
472 | list_for_each_entry(enc, &imxdrm->encoder_list, list) { | |
473 | u32 possible_crtcs = 0; | |
474 | ||
475 | list_for_each_entry(cookie, &enc->possible_crtcs, list) { | |
476 | list_for_each_entry(imx_drm_crtc, &imxdrm->crtc_list, list) { | |
477 | if (imx_drm_crtc->cookie.cookie == cookie->cookie && | |
478 | imx_drm_crtc->cookie.id == cookie->id) { | |
479 | possible_crtcs |= 1 << imx_drm_crtc->pipe; | |
480 | } | |
481 | } | |
482 | } | |
483 | enc->encoder->possible_crtcs = possible_crtcs; | |
484 | enc->encoder->possible_clones = possible_crtcs; | |
485 | } | |
486 | } | |
487 | ||
488 | /* | |
489 | * imx_drm_add_crtc - add a new crtc | |
490 | * | |
491 | * The return value if !NULL is a cookie for the caller to pass to | |
492 | * imx_drm_remove_crtc later. | |
493 | */ | |
494 | int imx_drm_add_crtc(struct drm_crtc *crtc, | |
495 | struct imx_drm_crtc **new_crtc, | |
496 | const struct imx_drm_crtc_helper_funcs *imx_drm_helper_funcs, | |
497 | struct module *owner, void *cookie, int id) | |
498 | { | |
499 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
500 | struct imx_drm_crtc *imx_drm_crtc; | |
e692da4d SH |
501 | int ret; |
502 | ||
503 | mutex_lock(&imxdrm->mutex); | |
504 | ||
fd6040ed RK |
505 | /* |
506 | * The vblank arrays are dimensioned by MAX_CRTC - we can't | |
507 | * pass IDs greater than this to those functions. | |
508 | */ | |
509 | if (imxdrm->pipes >= MAX_CRTC) { | |
510 | ret = -EINVAL; | |
511 | goto err_busy; | |
512 | } | |
513 | ||
099326d8 | 514 | if (imxdrm->drm->open_count) { |
e692da4d SH |
515 | ret = -EBUSY; |
516 | goto err_busy; | |
517 | } | |
518 | ||
519 | imx_drm_crtc = kzalloc(sizeof(*imx_drm_crtc), GFP_KERNEL); | |
520 | if (!imx_drm_crtc) { | |
521 | ret = -ENOMEM; | |
522 | goto err_alloc; | |
523 | } | |
524 | ||
525 | imx_drm_crtc->imx_drm_helper_funcs = *imx_drm_helper_funcs; | |
526 | imx_drm_crtc->pipe = imxdrm->pipes++; | |
527 | imx_drm_crtc->cookie.cookie = cookie; | |
528 | imx_drm_crtc->cookie.id = id; | |
529 | ||
e692da4d SH |
530 | imx_drm_crtc->crtc = crtc; |
531 | imx_drm_crtc->imxdrm = imxdrm; | |
532 | ||
533 | imx_drm_crtc->owner = owner; | |
534 | ||
535 | list_add_tail(&imx_drm_crtc->list, &imxdrm->crtc_list); | |
536 | ||
537 | *new_crtc = imx_drm_crtc; | |
538 | ||
539 | ret = imx_drm_crtc_register(imx_drm_crtc); | |
540 | if (ret) | |
541 | goto err_register; | |
542 | ||
543 | imx_drm_update_possible_crtcs(); | |
544 | ||
545 | mutex_unlock(&imxdrm->mutex); | |
546 | ||
547 | return 0; | |
548 | ||
549 | err_register: | |
82832046 | 550 | list_del(&imx_drm_crtc->list); |
e692da4d SH |
551 | kfree(imx_drm_crtc); |
552 | err_alloc: | |
553 | err_busy: | |
554 | mutex_unlock(&imxdrm->mutex); | |
555 | return ret; | |
556 | } | |
557 | EXPORT_SYMBOL_GPL(imx_drm_add_crtc); | |
558 | ||
559 | /* | |
560 | * imx_drm_remove_crtc - remove a crtc | |
561 | */ | |
562 | int imx_drm_remove_crtc(struct imx_drm_crtc *imx_drm_crtc) | |
563 | { | |
564 | struct imx_drm_device *imxdrm = imx_drm_crtc->imxdrm; | |
565 | ||
566 | mutex_lock(&imxdrm->mutex); | |
567 | ||
568 | drm_crtc_cleanup(imx_drm_crtc->crtc); | |
569 | ||
570 | list_del(&imx_drm_crtc->list); | |
571 | ||
572 | drm_mode_group_reinit(imxdrm->drm); | |
573 | ||
574 | mutex_unlock(&imxdrm->mutex); | |
575 | ||
576 | kfree(imx_drm_crtc); | |
577 | ||
578 | return 0; | |
579 | } | |
580 | EXPORT_SYMBOL_GPL(imx_drm_remove_crtc); | |
581 | ||
582 | /* | |
583 | * imx_drm_add_encoder - add a new encoder | |
584 | */ | |
585 | int imx_drm_add_encoder(struct drm_encoder *encoder, | |
586 | struct imx_drm_encoder **newenc, struct module *owner) | |
587 | { | |
588 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
589 | struct imx_drm_encoder *imx_drm_encoder; | |
590 | int ret; | |
591 | ||
592 | mutex_lock(&imxdrm->mutex); | |
593 | ||
099326d8 | 594 | if (imxdrm->drm->open_count) { |
e692da4d SH |
595 | ret = -EBUSY; |
596 | goto err_busy; | |
597 | } | |
598 | ||
599 | imx_drm_encoder = kzalloc(sizeof(*imx_drm_encoder), GFP_KERNEL); | |
600 | if (!imx_drm_encoder) { | |
601 | ret = -ENOMEM; | |
602 | goto err_alloc; | |
603 | } | |
604 | ||
605 | imx_drm_encoder->encoder = encoder; | |
606 | imx_drm_encoder->owner = owner; | |
607 | ||
608 | ret = imx_drm_encoder_register(imx_drm_encoder); | |
609 | if (ret) { | |
e692da4d SH |
610 | ret = -ENOMEM; |
611 | goto err_register; | |
612 | } | |
613 | ||
614 | list_add_tail(&imx_drm_encoder->list, &imxdrm->encoder_list); | |
615 | ||
616 | *newenc = imx_drm_encoder; | |
617 | ||
618 | mutex_unlock(&imxdrm->mutex); | |
619 | ||
620 | return 0; | |
621 | ||
622 | err_register: | |
623 | kfree(imx_drm_encoder); | |
624 | err_alloc: | |
625 | err_busy: | |
626 | mutex_unlock(&imxdrm->mutex); | |
627 | ||
628 | return ret; | |
629 | } | |
630 | EXPORT_SYMBOL_GPL(imx_drm_add_encoder); | |
631 | ||
632 | int imx_drm_encoder_add_possible_crtcs( | |
633 | struct imx_drm_encoder *imx_drm_encoder, | |
634 | struct device_node *np) | |
635 | { | |
636 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
637 | struct of_phandle_args args; | |
638 | struct crtc_cookie *c; | |
639 | int ret = 0; | |
640 | int i; | |
641 | ||
642 | if (!list_empty(&imx_drm_encoder->possible_crtcs)) | |
643 | return -EBUSY; | |
644 | ||
645 | for (i = 0; !ret; i++) { | |
646 | ret = of_parse_phandle_with_args(np, "crtcs", | |
647 | "#crtc-cells", i, &args); | |
648 | if (ret < 0) | |
649 | break; | |
650 | ||
651 | c = kzalloc(sizeof(*c), GFP_KERNEL); | |
652 | if (!c) { | |
653 | of_node_put(args.np); | |
654 | return -ENOMEM; | |
655 | } | |
656 | ||
657 | c->cookie = args.np; | |
658 | c->id = args.args_count > 0 ? args.args[0] : 0; | |
659 | ||
660 | of_node_put(args.np); | |
661 | ||
662 | mutex_lock(&imxdrm->mutex); | |
663 | ||
664 | list_add_tail(&c->list, &imx_drm_encoder->possible_crtcs); | |
665 | ||
666 | mutex_unlock(&imxdrm->mutex); | |
667 | } | |
668 | ||
669 | imx_drm_update_possible_crtcs(); | |
670 | ||
671 | return 0; | |
672 | } | |
aecfbdb1 | 673 | EXPORT_SYMBOL_GPL(imx_drm_encoder_add_possible_crtcs); |
e692da4d SH |
674 | |
675 | int imx_drm_encoder_get_mux_id(struct imx_drm_encoder *imx_drm_encoder, | |
676 | struct drm_crtc *crtc) | |
677 | { | |
678 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
679 | struct imx_drm_crtc *imx_crtc; | |
680 | int i = 0; | |
681 | ||
e692da4d SH |
682 | list_for_each_entry(imx_crtc, &imxdrm->crtc_list, list) { |
683 | if (imx_crtc->crtc == crtc) | |
684 | goto found; | |
685 | i++; | |
686 | } | |
687 | ||
e692da4d SH |
688 | return -EINVAL; |
689 | found: | |
e692da4d SH |
690 | return i; |
691 | } | |
ea8d1583 | 692 | EXPORT_SYMBOL_GPL(imx_drm_encoder_get_mux_id); |
e692da4d SH |
693 | |
694 | /* | |
695 | * imx_drm_remove_encoder - remove an encoder | |
696 | */ | |
697 | int imx_drm_remove_encoder(struct imx_drm_encoder *imx_drm_encoder) | |
698 | { | |
699 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
700 | struct crtc_cookie *c, *tmp; | |
701 | ||
702 | mutex_lock(&imxdrm->mutex); | |
703 | ||
704 | imx_drm_encoder_unregister(imx_drm_encoder); | |
705 | ||
706 | list_del(&imx_drm_encoder->list); | |
707 | ||
708 | list_for_each_entry_safe(c, tmp, &imx_drm_encoder->possible_crtcs, | |
709 | list) | |
710 | kfree(c); | |
711 | ||
712 | mutex_unlock(&imxdrm->mutex); | |
713 | ||
714 | kfree(imx_drm_encoder); | |
715 | ||
716 | return 0; | |
717 | } | |
718 | EXPORT_SYMBOL_GPL(imx_drm_remove_encoder); | |
719 | ||
720 | /* | |
721 | * imx_drm_add_connector - add a connector | |
722 | */ | |
723 | int imx_drm_add_connector(struct drm_connector *connector, | |
724 | struct imx_drm_connector **new_con, | |
725 | struct module *owner) | |
726 | { | |
727 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
728 | struct imx_drm_connector *imx_drm_connector; | |
729 | int ret; | |
730 | ||
731 | mutex_lock(&imxdrm->mutex); | |
732 | ||
099326d8 | 733 | if (imxdrm->drm->open_count) { |
e692da4d SH |
734 | ret = -EBUSY; |
735 | goto err_busy; | |
736 | } | |
737 | ||
738 | imx_drm_connector = kzalloc(sizeof(*imx_drm_connector), GFP_KERNEL); | |
739 | if (!imx_drm_connector) { | |
740 | ret = -ENOMEM; | |
741 | goto err_alloc; | |
742 | } | |
743 | ||
744 | imx_drm_connector->connector = connector; | |
745 | imx_drm_connector->owner = owner; | |
746 | ||
747 | ret = imx_drm_connector_register(imx_drm_connector); | |
748 | if (ret) | |
749 | goto err_register; | |
750 | ||
751 | list_add_tail(&imx_drm_connector->list, &imxdrm->connector_list); | |
752 | ||
753 | *new_con = imx_drm_connector; | |
754 | ||
755 | mutex_unlock(&imxdrm->mutex); | |
756 | ||
757 | return 0; | |
758 | ||
759 | err_register: | |
760 | kfree(imx_drm_connector); | |
761 | err_alloc: | |
762 | err_busy: | |
763 | mutex_unlock(&imxdrm->mutex); | |
764 | ||
765 | return ret; | |
766 | } | |
767 | EXPORT_SYMBOL_GPL(imx_drm_add_connector); | |
768 | ||
769 | void imx_drm_fb_helper_set(struct drm_fbdev_cma *fbdev_helper) | |
770 | { | |
771 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
772 | ||
773 | imxdrm->fbhelper = fbdev_helper; | |
774 | } | |
775 | EXPORT_SYMBOL_GPL(imx_drm_fb_helper_set); | |
776 | ||
777 | /* | |
778 | * imx_drm_remove_connector - remove a connector | |
779 | */ | |
780 | int imx_drm_remove_connector(struct imx_drm_connector *imx_drm_connector) | |
781 | { | |
782 | struct imx_drm_device *imxdrm = __imx_drm_device(); | |
783 | ||
784 | mutex_lock(&imxdrm->mutex); | |
785 | ||
786 | imx_drm_connector_unregister(imx_drm_connector); | |
787 | ||
788 | list_del(&imx_drm_connector->list); | |
789 | ||
790 | mutex_unlock(&imxdrm->mutex); | |
791 | ||
792 | kfree(imx_drm_connector); | |
793 | ||
794 | return 0; | |
795 | } | |
796 | EXPORT_SYMBOL_GPL(imx_drm_remove_connector); | |
797 | ||
baa70943 | 798 | static const struct drm_ioctl_desc imx_drm_ioctls[] = { |
e692da4d SH |
799 | /* none so far */ |
800 | }; | |
801 | ||
802 | static struct drm_driver imx_drm_driver = { | |
bd3665c9 | 803 | .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME, |
e692da4d SH |
804 | .load = imx_drm_driver_load, |
805 | .unload = imx_drm_driver_unload, | |
e692da4d | 806 | .lastclose = imx_drm_driver_lastclose, |
6ee4d7fe | 807 | .preclose = imx_drm_driver_preclose, |
e692da4d SH |
808 | .gem_free_object = drm_gem_cma_free_object, |
809 | .gem_vm_ops = &drm_gem_cma_vm_ops, | |
810 | .dumb_create = drm_gem_cma_dumb_create, | |
811 | .dumb_map_offset = drm_gem_cma_dumb_map_offset, | |
43387b37 | 812 | .dumb_destroy = drm_gem_dumb_destroy, |
e692da4d | 813 | |
bd3665c9 PZ |
814 | .prime_handle_to_fd = drm_gem_prime_handle_to_fd, |
815 | .prime_fd_to_handle = drm_gem_prime_fd_to_handle, | |
816 | .gem_prime_import = drm_gem_prime_import, | |
817 | .gem_prime_export = drm_gem_prime_export, | |
818 | .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table, | |
819 | .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table, | |
820 | .gem_prime_vmap = drm_gem_cma_prime_vmap, | |
821 | .gem_prime_vunmap = drm_gem_cma_prime_vunmap, | |
822 | .gem_prime_mmap = drm_gem_cma_prime_mmap, | |
e692da4d SH |
823 | .get_vblank_counter = drm_vblank_count, |
824 | .enable_vblank = imx_drm_enable_vblank, | |
825 | .disable_vblank = imx_drm_disable_vblank, | |
826 | .ioctls = imx_drm_ioctls, | |
827 | .num_ioctls = ARRAY_SIZE(imx_drm_ioctls), | |
828 | .fops = &imx_drm_driver_fops, | |
829 | .name = "imx-drm", | |
830 | .desc = "i.MX DRM graphics", | |
831 | .date = "20120507", | |
832 | .major = 1, | |
833 | .minor = 0, | |
834 | .patchlevel = 0, | |
835 | }; | |
836 | ||
837 | static int imx_drm_platform_probe(struct platform_device *pdev) | |
838 | { | |
4cdbb4ff RK |
839 | int ret; |
840 | ||
841 | ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); | |
842 | if (ret) | |
843 | return ret; | |
844 | ||
e692da4d SH |
845 | imx_drm_device->dev = &pdev->dev; |
846 | ||
847 | return drm_platform_init(&imx_drm_driver, pdev); | |
848 | } | |
849 | ||
850 | static int imx_drm_platform_remove(struct platform_device *pdev) | |
851 | { | |
a72f8bee | 852 | drm_put_dev(platform_get_drvdata(pdev)); |
e692da4d SH |
853 | |
854 | return 0; | |
855 | } | |
856 | ||
857 | static struct platform_driver imx_drm_pdrv = { | |
858 | .probe = imx_drm_platform_probe, | |
99c28f10 | 859 | .remove = imx_drm_platform_remove, |
e692da4d SH |
860 | .driver = { |
861 | .owner = THIS_MODULE, | |
862 | .name = "imx-drm", | |
863 | }, | |
864 | }; | |
865 | ||
866 | static struct platform_device *imx_drm_pdev; | |
867 | ||
868 | static int __init imx_drm_init(void) | |
869 | { | |
870 | int ret; | |
871 | ||
872 | imx_drm_device = kzalloc(sizeof(*imx_drm_device), GFP_KERNEL); | |
873 | if (!imx_drm_device) | |
874 | return -ENOMEM; | |
875 | ||
876 | mutex_init(&imx_drm_device->mutex); | |
877 | INIT_LIST_HEAD(&imx_drm_device->crtc_list); | |
878 | INIT_LIST_HEAD(&imx_drm_device->connector_list); | |
879 | INIT_LIST_HEAD(&imx_drm_device->encoder_list); | |
880 | ||
881 | imx_drm_pdev = platform_device_register_simple("imx-drm", -1, NULL, 0); | |
2eaaccde WY |
882 | if (IS_ERR(imx_drm_pdev)) { |
883 | ret = PTR_ERR(imx_drm_pdev); | |
e692da4d SH |
884 | goto err_pdev; |
885 | } | |
886 | ||
e692da4d SH |
887 | ret = platform_driver_register(&imx_drm_pdrv); |
888 | if (ret) | |
889 | goto err_pdrv; | |
890 | ||
891 | return 0; | |
892 | ||
893 | err_pdrv: | |
894 | platform_device_unregister(imx_drm_pdev); | |
895 | err_pdev: | |
896 | kfree(imx_drm_device); | |
897 | ||
898 | return ret; | |
899 | } | |
900 | ||
901 | static void __exit imx_drm_exit(void) | |
902 | { | |
903 | platform_device_unregister(imx_drm_pdev); | |
904 | platform_driver_unregister(&imx_drm_pdrv); | |
905 | ||
906 | kfree(imx_drm_device); | |
907 | } | |
908 | ||
909 | module_init(imx_drm_init); | |
910 | module_exit(imx_drm_exit); | |
911 | ||
912 | MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>"); | |
913 | MODULE_DESCRIPTION("i.MX drm driver core"); | |
914 | MODULE_LICENSE("GPL"); |