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
)
75 EXPORT_SYMBOL_GPL(imx_drm_crtc_id
);
77 static void imx_drm_driver_lastclose(struct drm_device
*drm
)
79 struct imx_drm_device
*imxdrm
= drm
->dev_private
;
82 drm_fbdev_cma_restore_mode(imxdrm
->fbhelper
);
85 static int imx_drm_driver_unload(struct drm_device
*drm
)
87 struct imx_drm_device
*imxdrm
= drm
->dev_private
;
91 drm_vblank_cleanup(drm
);
92 drm_kms_helper_poll_fini(drm
);
93 drm_mode_config_cleanup(drm
);
99 * We don't care at all for crtc numbers, but the core expects the
100 * crtcs to be numbered
102 static struct imx_drm_crtc
*imx_drm_crtc_by_num(struct imx_drm_device
*imxdrm
,
105 struct imx_drm_crtc
*imx_drm_crtc
;
107 list_for_each_entry(imx_drm_crtc
, &imxdrm
->crtc_list
, list
)
108 if (imx_drm_crtc
->pipe
== num
)
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
)
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
;
120 list_for_each_entry(imx_crtc
, &imxdrm
->crtc_list
, list
)
121 if (imx_crtc
->crtc
== crtc
)
126 helper
= &imx_crtc
->imx_drm_helper_funcs
;
127 if (helper
->set_interface_pix_fmt
)
128 return helper
->set_interface_pix_fmt(crtc
,
129 encoder_type
, interface_pix_fmt
,
130 hsync_pin
, vsync_pin
);
133 EXPORT_SYMBOL_GPL(imx_drm_crtc_panel_format_pins
);
135 int imx_drm_crtc_panel_format(struct drm_crtc
*crtc
, u32 encoder_type
,
136 u32 interface_pix_fmt
)
138 return imx_drm_crtc_panel_format_pins(crtc
, encoder_type
,
139 interface_pix_fmt
, 2, 3);
141 EXPORT_SYMBOL_GPL(imx_drm_crtc_panel_format
);
143 int imx_drm_crtc_vblank_get(struct imx_drm_crtc
*imx_drm_crtc
)
145 return drm_vblank_get(imx_drm_crtc
->crtc
->dev
, imx_drm_crtc
->pipe
);
147 EXPORT_SYMBOL_GPL(imx_drm_crtc_vblank_get
);
149 void imx_drm_crtc_vblank_put(struct imx_drm_crtc
*imx_drm_crtc
)
151 drm_vblank_put(imx_drm_crtc
->crtc
->dev
, imx_drm_crtc
->pipe
);
153 EXPORT_SYMBOL_GPL(imx_drm_crtc_vblank_put
);
155 void imx_drm_handle_vblank(struct imx_drm_crtc
*imx_drm_crtc
)
157 drm_handle_vblank(imx_drm_crtc
->crtc
->dev
, imx_drm_crtc
->pipe
);
159 EXPORT_SYMBOL_GPL(imx_drm_handle_vblank
);
161 static int imx_drm_enable_vblank(struct drm_device
*drm
, int crtc
)
163 struct imx_drm_device
*imxdrm
= drm
->dev_private
;
164 struct imx_drm_crtc
*imx_drm_crtc
;
167 imx_drm_crtc
= imx_drm_crtc_by_num(imxdrm
, crtc
);
171 if (!imx_drm_crtc
->imx_drm_helper_funcs
.enable_vblank
)
174 ret
= imx_drm_crtc
->imx_drm_helper_funcs
.enable_vblank(
180 static void imx_drm_disable_vblank(struct drm_device
*drm
, int crtc
)
182 struct imx_drm_device
*imxdrm
= drm
->dev_private
;
183 struct imx_drm_crtc
*imx_drm_crtc
;
185 imx_drm_crtc
= imx_drm_crtc_by_num(imxdrm
, crtc
);
189 if (!imx_drm_crtc
->imx_drm_helper_funcs
.disable_vblank
)
192 imx_drm_crtc
->imx_drm_helper_funcs
.disable_vblank(imx_drm_crtc
->crtc
);
195 static void imx_drm_driver_preclose(struct drm_device
*drm
,
196 struct drm_file
*file
)
200 if (!file
->is_master
)
203 for (i
= 0; i
< MAX_CRTC
; i
++)
204 imx_drm_disable_vblank(drm
, i
);
207 static const struct file_operations imx_drm_driver_fops
= {
208 .owner
= THIS_MODULE
,
210 .release
= drm_release
,
211 .unlocked_ioctl
= drm_ioctl
,
212 .mmap
= drm_gem_cma_mmap
,
215 .llseek
= noop_llseek
,
218 static struct imx_drm_device
*imx_drm_device
;
220 static struct imx_drm_device
*__imx_drm_device(void)
222 return imx_drm_device
;
225 struct drm_device
*imx_drm_device_get(void)
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
;
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
));
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
));
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
));
259 list_for_each_entry_continue_reverse(crtc
, &imxdrm
->crtc_list
, list
)
260 module_put(crtc
->owner
);
262 list_for_each_entry_continue_reverse(con
, &imxdrm
->connector_list
, list
)
263 module_put(con
->owner
);
265 list_for_each_entry_continue_reverse(enc
, &imxdrm
->encoder_list
, list
)
266 module_put(enc
->owner
);
268 mutex_unlock(&imxdrm
->mutex
);
273 EXPORT_SYMBOL_GPL(imx_drm_device_get
);
275 void imx_drm_device_put(void)
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
;
282 mutex_lock(&imxdrm
->mutex
);
284 list_for_each_entry(crtc
, &imxdrm
->crtc_list
, list
)
285 module_put(crtc
->owner
);
287 list_for_each_entry(con
, &imxdrm
->connector_list
, list
)
288 module_put(con
->owner
);
290 list_for_each_entry(enc
, &imxdrm
->encoder_list
, list
)
291 module_put(enc
->owner
);
293 mutex_unlock(&imxdrm
->mutex
);
295 EXPORT_SYMBOL_GPL(imx_drm_device_put
);
297 static int drm_mode_group_reinit(struct drm_device
*dev
)
299 struct drm_mode_group
*group
= &dev
->primary
->mode_group
;
300 uint32_t *id_list
= group
->id_list
;
303 ret
= drm_mode_group_init_legacy_group(dev
, group
);
312 * register an encoder to the drm core
314 static int imx_drm_encoder_register(struct imx_drm_encoder
*imx_drm_encoder
)
316 struct imx_drm_device
*imxdrm
= __imx_drm_device();
318 INIT_LIST_HEAD(&imx_drm_encoder
->possible_crtcs
);
320 drm_encoder_init(imxdrm
->drm
, imx_drm_encoder
->encoder
,
321 imx_drm_encoder
->encoder
->funcs
,
322 imx_drm_encoder
->encoder
->encoder_type
);
324 drm_mode_group_reinit(imxdrm
->drm
);
330 * unregister an encoder from the drm core
332 static void imx_drm_encoder_unregister(struct imx_drm_encoder
335 struct imx_drm_device
*imxdrm
= __imx_drm_device();
337 drm_encoder_cleanup(imx_drm_encoder
->encoder
);
339 drm_mode_group_reinit(imxdrm
->drm
);
343 * register a connector to the drm core
345 static int imx_drm_connector_register(
346 struct imx_drm_connector
*imx_drm_connector
)
348 struct imx_drm_device
*imxdrm
= __imx_drm_device();
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
);
355 return drm_sysfs_connector_add(imx_drm_connector
->connector
);
359 * unregister a connector from the drm core
361 static void imx_drm_connector_unregister(
362 struct imx_drm_connector
*imx_drm_connector
)
364 struct imx_drm_device
*imxdrm
= __imx_drm_device();
366 drm_sysfs_connector_remove(imx_drm_connector
->connector
);
367 drm_connector_cleanup(imx_drm_connector
->connector
);
369 drm_mode_group_reinit(imxdrm
->drm
);
373 * Called by the CRTC driver when all CRTCs are registered. This
374 * puts all the pieces together and initializes the driver.
375 * Once this is called no more CRTCs can be registered since
376 * the drm core has hardcoded the number of crtcs in several
379 static int imx_drm_driver_load(struct drm_device
*drm
, unsigned long flags
)
381 struct imx_drm_device
*imxdrm
= __imx_drm_device();
386 drm
->dev_private
= imxdrm
;
389 * enable drm irq mode.
390 * - with irq_enabled = true, we can use the vblank feature.
392 * P.S. note that we wouldn't use drm irq handler but
393 * just specific driver own one instead because
394 * drm framework supports only one irq handler and
395 * drivers can well take care of their interrupts
397 drm
->irq_enabled
= true;
399 drm_mode_config_init(drm
);
400 imx_drm_mode_config_init(drm
);
402 mutex_lock(&imxdrm
->mutex
);
404 drm_kms_helper_poll_init(drm
);
406 /* setup the grouping for the legacy output */
407 ret
= drm_mode_group_init_legacy_group(drm
,
408 &drm
->primary
->mode_group
);
412 ret
= drm_vblank_init(drm
, MAX_CRTC
);
417 * with vblank_disable_allowed = true, vblank interrupt will be disabled
418 * by drm timer once a current process gives up ownership of
419 * vblank event.(after drm_vblank_put function is called)
421 drm
->vblank_disable_allowed
= true;
423 if (!imx_drm_device_get()) {
428 platform_set_drvdata(drm
->platformdev
, drm
);
429 mutex_unlock(&imxdrm
->mutex
);
433 drm_vblank_cleanup(drm
);
435 drm_kms_helper_poll_fini(drm
);
436 drm_mode_config_cleanup(drm
);
437 mutex_unlock(&imxdrm
->mutex
);
442 static void imx_drm_update_possible_crtcs(void)
444 struct imx_drm_device
*imxdrm
= __imx_drm_device();
445 struct imx_drm_crtc
*imx_drm_crtc
;
446 struct imx_drm_encoder
*enc
;
447 struct crtc_cookie
*cookie
;
449 list_for_each_entry(enc
, &imxdrm
->encoder_list
, list
) {
450 u32 possible_crtcs
= 0;
452 list_for_each_entry(cookie
, &enc
->possible_crtcs
, list
) {
453 list_for_each_entry(imx_drm_crtc
, &imxdrm
->crtc_list
, list
) {
454 if (imx_drm_crtc
->cookie
.cookie
== cookie
->cookie
&&
455 imx_drm_crtc
->cookie
.id
== cookie
->id
) {
456 possible_crtcs
|= 1 << imx_drm_crtc
->pipe
;
460 enc
->encoder
->possible_crtcs
= possible_crtcs
;
461 enc
->encoder
->possible_clones
= possible_crtcs
;
466 * imx_drm_add_crtc - add a new crtc
468 * The return value if !NULL is a cookie for the caller to pass to
469 * imx_drm_remove_crtc later.
471 int imx_drm_add_crtc(struct drm_crtc
*crtc
,
472 struct imx_drm_crtc
**new_crtc
,
473 const struct imx_drm_crtc_helper_funcs
*imx_drm_helper_funcs
,
474 struct module
*owner
, void *cookie
, int id
)
476 struct imx_drm_device
*imxdrm
= __imx_drm_device();
477 struct imx_drm_crtc
*imx_drm_crtc
;
480 mutex_lock(&imxdrm
->mutex
);
483 * The vblank arrays are dimensioned by MAX_CRTC - we can't
484 * pass IDs greater than this to those functions.
486 if (imxdrm
->pipes
>= MAX_CRTC
) {
491 if (imxdrm
->drm
->open_count
) {
496 imx_drm_crtc
= kzalloc(sizeof(*imx_drm_crtc
), GFP_KERNEL
);
502 imx_drm_crtc
->imx_drm_helper_funcs
= *imx_drm_helper_funcs
;
503 imx_drm_crtc
->pipe
= imxdrm
->pipes
++;
504 imx_drm_crtc
->cookie
.cookie
= cookie
;
505 imx_drm_crtc
->cookie
.id
= id
;
507 imx_drm_crtc
->crtc
= crtc
;
508 imx_drm_crtc
->imxdrm
= imxdrm
;
510 imx_drm_crtc
->owner
= owner
;
512 list_add_tail(&imx_drm_crtc
->list
, &imxdrm
->crtc_list
);
514 *new_crtc
= imx_drm_crtc
;
516 ret
= drm_mode_crtc_set_gamma_size(imx_drm_crtc
->crtc
, 256);
520 drm_crtc_helper_add(crtc
,
521 imx_drm_crtc
->imx_drm_helper_funcs
.crtc_helper_funcs
);
523 drm_crtc_init(imxdrm
->drm
, crtc
,
524 imx_drm_crtc
->imx_drm_helper_funcs
.crtc_funcs
);
526 drm_mode_group_reinit(imxdrm
->drm
);
528 imx_drm_update_possible_crtcs();
530 mutex_unlock(&imxdrm
->mutex
);
535 list_del(&imx_drm_crtc
->list
);
539 mutex_unlock(&imxdrm
->mutex
);
542 EXPORT_SYMBOL_GPL(imx_drm_add_crtc
);
545 * imx_drm_remove_crtc - remove a crtc
547 int imx_drm_remove_crtc(struct imx_drm_crtc
*imx_drm_crtc
)
549 struct imx_drm_device
*imxdrm
= imx_drm_crtc
->imxdrm
;
551 mutex_lock(&imxdrm
->mutex
);
553 drm_crtc_cleanup(imx_drm_crtc
->crtc
);
555 list_del(&imx_drm_crtc
->list
);
557 drm_mode_group_reinit(imxdrm
->drm
);
559 mutex_unlock(&imxdrm
->mutex
);
565 EXPORT_SYMBOL_GPL(imx_drm_remove_crtc
);
568 * imx_drm_add_encoder - add a new encoder
570 int imx_drm_add_encoder(struct drm_encoder
*encoder
,
571 struct imx_drm_encoder
**newenc
, struct module
*owner
)
573 struct imx_drm_device
*imxdrm
= __imx_drm_device();
574 struct imx_drm_encoder
*imx_drm_encoder
;
577 mutex_lock(&imxdrm
->mutex
);
579 if (imxdrm
->drm
->open_count
) {
584 imx_drm_encoder
= kzalloc(sizeof(*imx_drm_encoder
), GFP_KERNEL
);
585 if (!imx_drm_encoder
) {
590 imx_drm_encoder
->encoder
= encoder
;
591 imx_drm_encoder
->owner
= owner
;
593 ret
= imx_drm_encoder_register(imx_drm_encoder
);
599 list_add_tail(&imx_drm_encoder
->list
, &imxdrm
->encoder_list
);
601 *newenc
= imx_drm_encoder
;
603 mutex_unlock(&imxdrm
->mutex
);
608 kfree(imx_drm_encoder
);
611 mutex_unlock(&imxdrm
->mutex
);
615 EXPORT_SYMBOL_GPL(imx_drm_add_encoder
);
617 int imx_drm_encoder_add_possible_crtcs(
618 struct imx_drm_encoder
*imx_drm_encoder
,
619 struct device_node
*np
)
621 struct imx_drm_device
*imxdrm
= __imx_drm_device();
622 struct of_phandle_args args
;
623 struct crtc_cookie
*c
;
627 if (!list_empty(&imx_drm_encoder
->possible_crtcs
))
630 for (i
= 0; !ret
; i
++) {
631 ret
= of_parse_phandle_with_args(np
, "crtcs",
632 "#crtc-cells", i
, &args
);
636 c
= kzalloc(sizeof(*c
), GFP_KERNEL
);
638 of_node_put(args
.np
);
643 c
->id
= args
.args_count
> 0 ? args
.args
[0] : 0;
645 of_node_put(args
.np
);
647 mutex_lock(&imxdrm
->mutex
);
649 list_add_tail(&c
->list
, &imx_drm_encoder
->possible_crtcs
);
651 mutex_unlock(&imxdrm
->mutex
);
654 imx_drm_update_possible_crtcs();
658 EXPORT_SYMBOL_GPL(imx_drm_encoder_add_possible_crtcs
);
660 int imx_drm_encoder_get_mux_id(struct imx_drm_encoder
*imx_drm_encoder
,
661 struct drm_crtc
*crtc
)
663 struct imx_drm_device
*imxdrm
= __imx_drm_device();
664 struct imx_drm_crtc
*imx_crtc
;
667 list_for_each_entry(imx_crtc
, &imxdrm
->crtc_list
, list
) {
668 if (imx_crtc
->crtc
== crtc
)
677 EXPORT_SYMBOL_GPL(imx_drm_encoder_get_mux_id
);
680 * imx_drm_remove_encoder - remove an encoder
682 int imx_drm_remove_encoder(struct imx_drm_encoder
*imx_drm_encoder
)
684 struct imx_drm_device
*imxdrm
= __imx_drm_device();
685 struct crtc_cookie
*c
, *tmp
;
687 mutex_lock(&imxdrm
->mutex
);
689 imx_drm_encoder_unregister(imx_drm_encoder
);
691 list_del(&imx_drm_encoder
->list
);
693 list_for_each_entry_safe(c
, tmp
, &imx_drm_encoder
->possible_crtcs
,
697 mutex_unlock(&imxdrm
->mutex
);
699 kfree(imx_drm_encoder
);
703 EXPORT_SYMBOL_GPL(imx_drm_remove_encoder
);
706 * imx_drm_add_connector - add a connector
708 int imx_drm_add_connector(struct drm_connector
*connector
,
709 struct imx_drm_connector
**new_con
,
710 struct module
*owner
)
712 struct imx_drm_device
*imxdrm
= __imx_drm_device();
713 struct imx_drm_connector
*imx_drm_connector
;
716 mutex_lock(&imxdrm
->mutex
);
718 if (imxdrm
->drm
->open_count
) {
723 imx_drm_connector
= kzalloc(sizeof(*imx_drm_connector
), GFP_KERNEL
);
724 if (!imx_drm_connector
) {
729 imx_drm_connector
->connector
= connector
;
730 imx_drm_connector
->owner
= owner
;
732 ret
= imx_drm_connector_register(imx_drm_connector
);
736 list_add_tail(&imx_drm_connector
->list
, &imxdrm
->connector_list
);
738 *new_con
= imx_drm_connector
;
740 mutex_unlock(&imxdrm
->mutex
);
745 kfree(imx_drm_connector
);
748 mutex_unlock(&imxdrm
->mutex
);
752 EXPORT_SYMBOL_GPL(imx_drm_add_connector
);
754 void imx_drm_fb_helper_set(struct drm_fbdev_cma
*fbdev_helper
)
756 struct imx_drm_device
*imxdrm
= __imx_drm_device();
758 imxdrm
->fbhelper
= fbdev_helper
;
760 EXPORT_SYMBOL_GPL(imx_drm_fb_helper_set
);
763 * imx_drm_remove_connector - remove a connector
765 int imx_drm_remove_connector(struct imx_drm_connector
*imx_drm_connector
)
767 struct imx_drm_device
*imxdrm
= __imx_drm_device();
769 mutex_lock(&imxdrm
->mutex
);
771 imx_drm_connector_unregister(imx_drm_connector
);
773 list_del(&imx_drm_connector
->list
);
775 mutex_unlock(&imxdrm
->mutex
);
777 kfree(imx_drm_connector
);
781 EXPORT_SYMBOL_GPL(imx_drm_remove_connector
);
783 static const struct drm_ioctl_desc imx_drm_ioctls
[] = {
787 static struct drm_driver imx_drm_driver
= {
788 .driver_features
= DRIVER_MODESET
| DRIVER_GEM
| DRIVER_PRIME
,
789 .load
= imx_drm_driver_load
,
790 .unload
= imx_drm_driver_unload
,
791 .lastclose
= imx_drm_driver_lastclose
,
792 .preclose
= imx_drm_driver_preclose
,
793 .gem_free_object
= drm_gem_cma_free_object
,
794 .gem_vm_ops
= &drm_gem_cma_vm_ops
,
795 .dumb_create
= drm_gem_cma_dumb_create
,
796 .dumb_map_offset
= drm_gem_cma_dumb_map_offset
,
797 .dumb_destroy
= drm_gem_dumb_destroy
,
799 .prime_handle_to_fd
= drm_gem_prime_handle_to_fd
,
800 .prime_fd_to_handle
= drm_gem_prime_fd_to_handle
,
801 .gem_prime_import
= drm_gem_prime_import
,
802 .gem_prime_export
= drm_gem_prime_export
,
803 .gem_prime_get_sg_table
= drm_gem_cma_prime_get_sg_table
,
804 .gem_prime_import_sg_table
= drm_gem_cma_prime_import_sg_table
,
805 .gem_prime_vmap
= drm_gem_cma_prime_vmap
,
806 .gem_prime_vunmap
= drm_gem_cma_prime_vunmap
,
807 .gem_prime_mmap
= drm_gem_cma_prime_mmap
,
808 .get_vblank_counter
= drm_vblank_count
,
809 .enable_vblank
= imx_drm_enable_vblank
,
810 .disable_vblank
= imx_drm_disable_vblank
,
811 .ioctls
= imx_drm_ioctls
,
812 .num_ioctls
= ARRAY_SIZE(imx_drm_ioctls
),
813 .fops
= &imx_drm_driver_fops
,
815 .desc
= "i.MX DRM graphics",
822 static int imx_drm_platform_probe(struct platform_device
*pdev
)
826 ret
= dma_set_coherent_mask(&pdev
->dev
, DMA_BIT_MASK(32));
830 imx_drm_device
->dev
= &pdev
->dev
;
832 return drm_platform_init(&imx_drm_driver
, pdev
);
835 static int imx_drm_platform_remove(struct platform_device
*pdev
)
837 drm_put_dev(platform_get_drvdata(pdev
));
842 static struct platform_driver imx_drm_pdrv
= {
843 .probe
= imx_drm_platform_probe
,
844 .remove
= imx_drm_platform_remove
,
846 .owner
= THIS_MODULE
,
851 static struct platform_device
*imx_drm_pdev
;
853 static int __init
imx_drm_init(void)
857 imx_drm_device
= kzalloc(sizeof(*imx_drm_device
), GFP_KERNEL
);
861 mutex_init(&imx_drm_device
->mutex
);
862 INIT_LIST_HEAD(&imx_drm_device
->crtc_list
);
863 INIT_LIST_HEAD(&imx_drm_device
->connector_list
);
864 INIT_LIST_HEAD(&imx_drm_device
->encoder_list
);
866 imx_drm_pdev
= platform_device_register_simple("imx-drm", -1, NULL
, 0);
867 if (IS_ERR(imx_drm_pdev
)) {
868 ret
= PTR_ERR(imx_drm_pdev
);
872 ret
= platform_driver_register(&imx_drm_pdrv
);
879 platform_device_unregister(imx_drm_pdev
);
881 kfree(imx_drm_device
);
886 static void __exit
imx_drm_exit(void)
888 platform_device_unregister(imx_drm_pdev
);
889 platform_driver_unregister(&imx_drm_pdrv
);
891 kfree(imx_drm_device
);
894 module_init(imx_drm_init
);
895 module_exit(imx_drm_exit
);
897 MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
898 MODULE_DESCRIPTION("i.MX drm driver core");
899 MODULE_LICENSE("GPL");