2 * Freescale i.MX drm driver
4 * Copyright (C) 2011 Sascha Hauer, Pengutronix
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.
17 #include <linux/device.h>
18 #include <linux/platform_device.h>
20 #include <drm/drm_fb_helper.h>
21 #include <drm/drm_crtc_helper.h>
23 #include <linux/module.h>
24 #include <drm/drm_gem_cma_helper.h>
25 #include <drm/drm_fb_cma_helper.h>
34 struct list_head list
;
37 struct imx_drm_device
{
38 struct drm_device
*drm
;
40 struct list_head crtc_list
;
41 struct list_head encoder_list
;
42 struct list_head connector_list
;
45 struct drm_fbdev_cma
*fbhelper
;
49 struct drm_crtc
*crtc
;
50 struct list_head list
;
51 struct imx_drm_device
*imxdrm
;
53 struct imx_drm_crtc_helper_funcs imx_drm_helper_funcs
;
55 struct crtc_cookie cookie
;
58 struct imx_drm_encoder
{
59 struct drm_encoder
*encoder
;
60 struct list_head list
;
62 struct list_head possible_crtcs
;
65 struct imx_drm_connector
{
66 struct drm_connector
*connector
;
67 struct list_head list
;
71 int imx_drm_crtc_id(struct imx_drm_crtc
*crtc
)
76 static void imx_drm_driver_lastclose(struct drm_device
*drm
)
78 struct imx_drm_device
*imxdrm
= drm
->dev_private
;
81 drm_fbdev_cma_restore_mode(imxdrm
->fbhelper
);
84 static int imx_drm_driver_unload(struct drm_device
*drm
)
86 struct imx_drm_device
*imxdrm
= drm
->dev_private
;
90 drm_mode_config_cleanup(imxdrm
->drm
);
91 drm_kms_helper_poll_fini(imxdrm
->drm
);
97 * We don't care at all for crtc numbers, but the core expects the
98 * crtcs to be numbered
100 static struct imx_drm_crtc
*imx_drm_crtc_by_num(struct imx_drm_device
*imxdrm
,
103 struct imx_drm_crtc
*imx_drm_crtc
;
105 list_for_each_entry(imx_drm_crtc
, &imxdrm
->crtc_list
, list
)
106 if (imx_drm_crtc
->pipe
== num
)
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
)
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
;
118 list_for_each_entry(imx_crtc
, &imxdrm
->crtc_list
, list
)
119 if (imx_crtc
->crtc
== crtc
)
124 helper
= &imx_crtc
->imx_drm_helper_funcs
;
125 if (helper
->set_interface_pix_fmt
)
126 return helper
->set_interface_pix_fmt(crtc
,
127 encoder_type
, interface_pix_fmt
,
128 hsync_pin
, vsync_pin
);
131 EXPORT_SYMBOL_GPL(imx_drm_crtc_panel_format_pins
);
133 int imx_drm_crtc_panel_format(struct drm_crtc
*crtc
, u32 encoder_type
,
134 u32 interface_pix_fmt
)
136 return imx_drm_crtc_panel_format_pins(crtc
, encoder_type
,
137 interface_pix_fmt
, 2, 3);
139 EXPORT_SYMBOL_GPL(imx_drm_crtc_panel_format
);
141 int imx_drm_crtc_vblank_get(struct imx_drm_crtc
*imx_drm_crtc
)
143 return drm_vblank_get(imx_drm_crtc
->imxdrm
->drm
, imx_drm_crtc
->pipe
);
145 EXPORT_SYMBOL_GPL(imx_drm_crtc_vblank_get
);
147 void imx_drm_crtc_vblank_put(struct imx_drm_crtc
*imx_drm_crtc
)
149 drm_vblank_put(imx_drm_crtc
->imxdrm
->drm
, imx_drm_crtc
->pipe
);
151 EXPORT_SYMBOL_GPL(imx_drm_crtc_vblank_put
);
153 void imx_drm_handle_vblank(struct imx_drm_crtc
*imx_drm_crtc
)
155 drm_handle_vblank(imx_drm_crtc
->imxdrm
->drm
, imx_drm_crtc
->pipe
);
157 EXPORT_SYMBOL_GPL(imx_drm_handle_vblank
);
159 static int imx_drm_enable_vblank(struct drm_device
*drm
, int crtc
)
161 struct imx_drm_device
*imxdrm
= drm
->dev_private
;
162 struct imx_drm_crtc
*imx_drm_crtc
;
165 imx_drm_crtc
= imx_drm_crtc_by_num(imxdrm
, crtc
);
169 if (!imx_drm_crtc
->imx_drm_helper_funcs
.enable_vblank
)
172 ret
= imx_drm_crtc
->imx_drm_helper_funcs
.enable_vblank(
178 static void imx_drm_disable_vblank(struct drm_device
*drm
, int crtc
)
180 struct imx_drm_device
*imxdrm
= drm
->dev_private
;
181 struct imx_drm_crtc
*imx_drm_crtc
;
183 imx_drm_crtc
= imx_drm_crtc_by_num(imxdrm
, crtc
);
187 if (!imx_drm_crtc
->imx_drm_helper_funcs
.disable_vblank
)
190 imx_drm_crtc
->imx_drm_helper_funcs
.disable_vblank(imx_drm_crtc
->crtc
);
193 static void imx_drm_driver_preclose(struct drm_device
*drm
,
194 struct drm_file
*file
)
198 if (!file
->is_master
)
201 for (i
= 0; i
< 4; i
++)
202 imx_drm_disable_vblank(drm
, i
);
205 static const struct file_operations imx_drm_driver_fops
= {
206 .owner
= THIS_MODULE
,
208 .release
= drm_release
,
209 .unlocked_ioctl
= drm_ioctl
,
210 .mmap
= drm_gem_cma_mmap
,
213 .llseek
= noop_llseek
,
216 static struct imx_drm_device
*imx_drm_device
;
218 static struct imx_drm_device
*__imx_drm_device(void)
220 return imx_drm_device
;
223 struct drm_device
*imx_drm_device_get(void)
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
;
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
));
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
));
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
));
257 list_for_each_entry_continue_reverse(crtc
, &imxdrm
->crtc_list
, list
)
258 module_put(crtc
->owner
);
260 list_for_each_entry_continue_reverse(con
, &imxdrm
->connector_list
, list
)
261 module_put(con
->owner
);
263 list_for_each_entry_continue_reverse(enc
, &imxdrm
->encoder_list
, list
)
264 module_put(enc
->owner
);
266 mutex_unlock(&imxdrm
->mutex
);
271 EXPORT_SYMBOL_GPL(imx_drm_device_get
);
273 void imx_drm_device_put(void)
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
;
280 mutex_lock(&imxdrm
->mutex
);
282 list_for_each_entry(crtc
, &imxdrm
->crtc_list
, list
)
283 module_put(crtc
->owner
);
285 list_for_each_entry(con
, &imxdrm
->connector_list
, list
)
286 module_put(con
->owner
);
288 list_for_each_entry(enc
, &imxdrm
->encoder_list
, list
)
289 module_put(enc
->owner
);
291 mutex_unlock(&imxdrm
->mutex
);
293 EXPORT_SYMBOL_GPL(imx_drm_device_put
);
295 static int drm_mode_group_reinit(struct drm_device
*dev
)
297 struct drm_mode_group
*group
= &dev
->primary
->mode_group
;
298 uint32_t *id_list
= group
->id_list
;
301 ret
= drm_mode_group_init_legacy_group(dev
, group
);
310 * register an encoder to the drm core
312 static int imx_drm_encoder_register(struct imx_drm_encoder
*imx_drm_encoder
)
314 struct imx_drm_device
*imxdrm
= __imx_drm_device();
316 INIT_LIST_HEAD(&imx_drm_encoder
->possible_crtcs
);
318 drm_encoder_init(imxdrm
->drm
, imx_drm_encoder
->encoder
,
319 imx_drm_encoder
->encoder
->funcs
,
320 imx_drm_encoder
->encoder
->encoder_type
);
322 drm_mode_group_reinit(imxdrm
->drm
);
328 * unregister an encoder from the drm core
330 static void imx_drm_encoder_unregister(struct imx_drm_encoder
333 struct imx_drm_device
*imxdrm
= __imx_drm_device();
335 drm_encoder_cleanup(imx_drm_encoder
->encoder
);
337 drm_mode_group_reinit(imxdrm
->drm
);
341 * register a connector to the drm core
343 static int imx_drm_connector_register(
344 struct imx_drm_connector
*imx_drm_connector
)
346 struct imx_drm_device
*imxdrm
= __imx_drm_device();
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
);
353 return drm_sysfs_connector_add(imx_drm_connector
->connector
);
357 * unregister a connector from the drm core
359 static void imx_drm_connector_unregister(
360 struct imx_drm_connector
*imx_drm_connector
)
362 struct imx_drm_device
*imxdrm
= __imx_drm_device();
364 drm_sysfs_connector_remove(imx_drm_connector
->connector
);
365 drm_connector_cleanup(imx_drm_connector
->connector
);
367 drm_mode_group_reinit(imxdrm
->drm
);
371 * register a crtc to the drm core
373 static int imx_drm_crtc_register(struct imx_drm_crtc
*imx_drm_crtc
)
375 struct imx_drm_device
*imxdrm
= __imx_drm_device();
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);
384 drm_crtc_helper_add(imx_drm_crtc
->crtc
,
385 imx_drm_crtc
->imx_drm_helper_funcs
.crtc_helper_funcs
);
387 drm_mode_group_reinit(imxdrm
->drm
);
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
399 static int imx_drm_driver_load(struct drm_device
*drm
, unsigned long flags
)
401 struct imx_drm_device
*imxdrm
= __imx_drm_device();
406 drm
->dev_private
= imxdrm
;
409 * enable drm irq mode.
410 * - with irq_enabled = true, we can use the vblank feature.
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
417 drm
->irq_enabled
= true;
419 drm_mode_config_init(drm
);
420 imx_drm_mode_config_init(drm
);
422 mutex_lock(&imxdrm
->mutex
);
424 drm_kms_helper_poll_init(imxdrm
->drm
);
426 /* setup the grouping for the legacy output */
427 ret
= drm_mode_group_init_legacy_group(imxdrm
->drm
,
428 &imxdrm
->drm
->primary
->mode_group
);
432 ret
= drm_vblank_init(imxdrm
->drm
, MAX_CRTC
);
437 * with vblank_disable_allowed = true, 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)
441 imxdrm
->drm
->vblank_disable_allowed
= true;
443 if (!imx_drm_device_get())
449 mutex_unlock(&imxdrm
->mutex
);
454 static void imx_drm_update_possible_crtcs(void)
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
;
461 list_for_each_entry(enc
, &imxdrm
->encoder_list
, list
) {
462 u32 possible_crtcs
= 0;
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
;
472 enc
->encoder
->possible_crtcs
= possible_crtcs
;
473 enc
->encoder
->possible_clones
= possible_crtcs
;
478 * imx_drm_add_crtc - add a new crtc
480 * The return value if !NULL is a cookie for the caller to pass to
481 * imx_drm_remove_crtc later.
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
)
488 struct imx_drm_device
*imxdrm
= __imx_drm_device();
489 struct imx_drm_crtc
*imx_drm_crtc
;
492 mutex_lock(&imxdrm
->mutex
);
494 if (imxdrm
->drm
->open_count
) {
499 imx_drm_crtc
= kzalloc(sizeof(*imx_drm_crtc
), GFP_KERNEL
);
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
;
510 imx_drm_crtc
->crtc
= crtc
;
511 imx_drm_crtc
->imxdrm
= imxdrm
;
513 imx_drm_crtc
->owner
= owner
;
515 list_add_tail(&imx_drm_crtc
->list
, &imxdrm
->crtc_list
);
517 *new_crtc
= imx_drm_crtc
;
519 ret
= imx_drm_crtc_register(imx_drm_crtc
);
523 imx_drm_update_possible_crtcs();
525 mutex_unlock(&imxdrm
->mutex
);
533 mutex_unlock(&imxdrm
->mutex
);
536 EXPORT_SYMBOL_GPL(imx_drm_add_crtc
);
539 * imx_drm_remove_crtc - remove a crtc
541 int imx_drm_remove_crtc(struct imx_drm_crtc
*imx_drm_crtc
)
543 struct imx_drm_device
*imxdrm
= imx_drm_crtc
->imxdrm
;
545 mutex_lock(&imxdrm
->mutex
);
547 drm_crtc_cleanup(imx_drm_crtc
->crtc
);
549 list_del(&imx_drm_crtc
->list
);
551 drm_mode_group_reinit(imxdrm
->drm
);
553 mutex_unlock(&imxdrm
->mutex
);
559 EXPORT_SYMBOL_GPL(imx_drm_remove_crtc
);
562 * imx_drm_add_encoder - add a new encoder
564 int imx_drm_add_encoder(struct drm_encoder
*encoder
,
565 struct imx_drm_encoder
**newenc
, struct module
*owner
)
567 struct imx_drm_device
*imxdrm
= __imx_drm_device();
568 struct imx_drm_encoder
*imx_drm_encoder
;
571 mutex_lock(&imxdrm
->mutex
);
573 if (imxdrm
->drm
->open_count
) {
578 imx_drm_encoder
= kzalloc(sizeof(*imx_drm_encoder
), GFP_KERNEL
);
579 if (!imx_drm_encoder
) {
584 imx_drm_encoder
->encoder
= encoder
;
585 imx_drm_encoder
->owner
= owner
;
587 ret
= imx_drm_encoder_register(imx_drm_encoder
);
593 list_add_tail(&imx_drm_encoder
->list
, &imxdrm
->encoder_list
);
595 *newenc
= imx_drm_encoder
;
597 mutex_unlock(&imxdrm
->mutex
);
602 kfree(imx_drm_encoder
);
605 mutex_unlock(&imxdrm
->mutex
);
609 EXPORT_SYMBOL_GPL(imx_drm_add_encoder
);
611 int imx_drm_encoder_add_possible_crtcs(
612 struct imx_drm_encoder
*imx_drm_encoder
,
613 struct device_node
*np
)
615 struct imx_drm_device
*imxdrm
= __imx_drm_device();
616 struct of_phandle_args args
;
617 struct crtc_cookie
*c
;
621 if (!list_empty(&imx_drm_encoder
->possible_crtcs
))
624 for (i
= 0; !ret
; i
++) {
625 ret
= of_parse_phandle_with_args(np
, "crtcs",
626 "#crtc-cells", i
, &args
);
630 c
= kzalloc(sizeof(*c
), GFP_KERNEL
);
632 of_node_put(args
.np
);
637 c
->id
= args
.args_count
> 0 ? args
.args
[0] : 0;
639 of_node_put(args
.np
);
641 mutex_lock(&imxdrm
->mutex
);
643 list_add_tail(&c
->list
, &imx_drm_encoder
->possible_crtcs
);
645 mutex_unlock(&imxdrm
->mutex
);
648 imx_drm_update_possible_crtcs();
652 EXPORT_SYMBOL_GPL(imx_drm_encoder_add_possible_crtcs
);
654 int imx_drm_encoder_get_mux_id(struct imx_drm_encoder
*imx_drm_encoder
,
655 struct drm_crtc
*crtc
)
657 struct imx_drm_device
*imxdrm
= __imx_drm_device();
658 struct imx_drm_crtc
*imx_crtc
;
661 list_for_each_entry(imx_crtc
, &imxdrm
->crtc_list
, list
) {
662 if (imx_crtc
->crtc
== crtc
)
671 EXPORT_SYMBOL_GPL(imx_drm_encoder_get_mux_id
);
674 * imx_drm_remove_encoder - remove an encoder
676 int imx_drm_remove_encoder(struct imx_drm_encoder
*imx_drm_encoder
)
678 struct imx_drm_device
*imxdrm
= __imx_drm_device();
679 struct crtc_cookie
*c
, *tmp
;
681 mutex_lock(&imxdrm
->mutex
);
683 imx_drm_encoder_unregister(imx_drm_encoder
);
685 list_del(&imx_drm_encoder
->list
);
687 list_for_each_entry_safe(c
, tmp
, &imx_drm_encoder
->possible_crtcs
,
691 mutex_unlock(&imxdrm
->mutex
);
693 kfree(imx_drm_encoder
);
697 EXPORT_SYMBOL_GPL(imx_drm_remove_encoder
);
700 * imx_drm_add_connector - add a connector
702 int imx_drm_add_connector(struct drm_connector
*connector
,
703 struct imx_drm_connector
**new_con
,
704 struct module
*owner
)
706 struct imx_drm_device
*imxdrm
= __imx_drm_device();
707 struct imx_drm_connector
*imx_drm_connector
;
710 mutex_lock(&imxdrm
->mutex
);
712 if (imxdrm
->drm
->open_count
) {
717 imx_drm_connector
= kzalloc(sizeof(*imx_drm_connector
), GFP_KERNEL
);
718 if (!imx_drm_connector
) {
723 imx_drm_connector
->connector
= connector
;
724 imx_drm_connector
->owner
= owner
;
726 ret
= imx_drm_connector_register(imx_drm_connector
);
730 list_add_tail(&imx_drm_connector
->list
, &imxdrm
->connector_list
);
732 *new_con
= imx_drm_connector
;
734 mutex_unlock(&imxdrm
->mutex
);
739 kfree(imx_drm_connector
);
742 mutex_unlock(&imxdrm
->mutex
);
746 EXPORT_SYMBOL_GPL(imx_drm_add_connector
);
748 void imx_drm_fb_helper_set(struct drm_fbdev_cma
*fbdev_helper
)
750 struct imx_drm_device
*imxdrm
= __imx_drm_device();
752 imxdrm
->fbhelper
= fbdev_helper
;
754 EXPORT_SYMBOL_GPL(imx_drm_fb_helper_set
);
757 * imx_drm_remove_connector - remove a connector
759 int imx_drm_remove_connector(struct imx_drm_connector
*imx_drm_connector
)
761 struct imx_drm_device
*imxdrm
= __imx_drm_device();
763 mutex_lock(&imxdrm
->mutex
);
765 imx_drm_connector_unregister(imx_drm_connector
);
767 list_del(&imx_drm_connector
->list
);
769 mutex_unlock(&imxdrm
->mutex
);
771 kfree(imx_drm_connector
);
775 EXPORT_SYMBOL_GPL(imx_drm_remove_connector
);
777 static const struct drm_ioctl_desc imx_drm_ioctls
[] = {
781 static struct drm_driver imx_drm_driver
= {
782 .driver_features
= DRIVER_MODESET
| DRIVER_GEM
| DRIVER_PRIME
,
783 .load
= imx_drm_driver_load
,
784 .unload
= imx_drm_driver_unload
,
785 .lastclose
= imx_drm_driver_lastclose
,
786 .preclose
= imx_drm_driver_preclose
,
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
,
791 .dumb_destroy
= drm_gem_dumb_destroy
,
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
,
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
,
809 .desc
= "i.MX DRM graphics",
816 static int imx_drm_platform_probe(struct platform_device
*pdev
)
820 ret
= dma_set_coherent_mask(&pdev
->dev
, DMA_BIT_MASK(32));
824 imx_drm_device
->dev
= &pdev
->dev
;
826 return drm_platform_init(&imx_drm_driver
, pdev
);
829 static int imx_drm_platform_remove(struct platform_device
*pdev
)
831 drm_platform_exit(&imx_drm_driver
, pdev
);
836 static struct platform_driver imx_drm_pdrv
= {
837 .probe
= imx_drm_platform_probe
,
838 .remove
= imx_drm_platform_remove
,
840 .owner
= THIS_MODULE
,
845 static struct platform_device
*imx_drm_pdev
;
847 static int __init
imx_drm_init(void)
851 imx_drm_device
= kzalloc(sizeof(*imx_drm_device
), GFP_KERNEL
);
855 mutex_init(&imx_drm_device
->mutex
);
856 INIT_LIST_HEAD(&imx_drm_device
->crtc_list
);
857 INIT_LIST_HEAD(&imx_drm_device
->connector_list
);
858 INIT_LIST_HEAD(&imx_drm_device
->encoder_list
);
860 imx_drm_pdev
= platform_device_register_simple("imx-drm", -1, NULL
, 0);
861 if (IS_ERR(imx_drm_pdev
)) {
862 ret
= PTR_ERR(imx_drm_pdev
);
866 ret
= platform_driver_register(&imx_drm_pdrv
);
873 platform_device_unregister(imx_drm_pdev
);
875 kfree(imx_drm_device
);
880 static void __exit
imx_drm_exit(void)
882 platform_device_unregister(imx_drm_pdev
);
883 platform_driver_unregister(&imx_drm_pdrv
);
885 kfree(imx_drm_device
);
888 module_init(imx_drm_init
);
889 module_exit(imx_drm_exit
);
891 MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
892 MODULE_DESCRIPTION("i.MX drm driver core");
893 MODULE_LICENSE("GPL");