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
;
59 struct imx_drm_encoder
{
60 struct drm_encoder
*encoder
;
61 struct list_head list
;
63 struct list_head possible_crtcs
;
66 struct imx_drm_connector
{
67 struct drm_connector
*connector
;
68 struct list_head list
;
72 int imx_drm_crtc_id(struct imx_drm_crtc
*crtc
)
76 EXPORT_SYMBOL_GPL(imx_drm_crtc_id
);
78 static void imx_drm_driver_lastclose(struct drm_device
*drm
)
80 struct imx_drm_device
*imxdrm
= drm
->dev_private
;
83 drm_fbdev_cma_restore_mode(imxdrm
->fbhelper
);
86 static int imx_drm_driver_unload(struct drm_device
*drm
)
88 struct imx_drm_device
*imxdrm
= drm
->dev_private
;
92 drm_vblank_cleanup(drm
);
93 drm_kms_helper_poll_fini(drm
);
94 drm_mode_config_cleanup(drm
);
100 * We don't care at all for crtc numbers, but the core expects the
101 * crtcs to be numbered
103 static struct imx_drm_crtc
*imx_drm_crtc_by_num(struct imx_drm_device
*imxdrm
,
106 struct imx_drm_crtc
*imx_drm_crtc
;
108 list_for_each_entry(imx_drm_crtc
, &imxdrm
->crtc_list
, list
)
109 if (imx_drm_crtc
->pipe
== num
)
114 int imx_drm_crtc_panel_format_pins(struct drm_crtc
*crtc
, u32 encoder_type
,
115 u32 interface_pix_fmt
, int hsync_pin
, int vsync_pin
)
117 struct imx_drm_device
*imxdrm
= crtc
->dev
->dev_private
;
118 struct imx_drm_crtc
*imx_crtc
;
119 struct imx_drm_crtc_helper_funcs
*helper
;
121 list_for_each_entry(imx_crtc
, &imxdrm
->crtc_list
, list
)
122 if (imx_crtc
->crtc
== crtc
)
127 helper
= &imx_crtc
->imx_drm_helper_funcs
;
128 if (helper
->set_interface_pix_fmt
)
129 return helper
->set_interface_pix_fmt(crtc
,
130 encoder_type
, interface_pix_fmt
,
131 hsync_pin
, vsync_pin
);
134 EXPORT_SYMBOL_GPL(imx_drm_crtc_panel_format_pins
);
136 int imx_drm_crtc_panel_format(struct drm_crtc
*crtc
, u32 encoder_type
,
137 u32 interface_pix_fmt
)
139 return imx_drm_crtc_panel_format_pins(crtc
, encoder_type
,
140 interface_pix_fmt
, 2, 3);
142 EXPORT_SYMBOL_GPL(imx_drm_crtc_panel_format
);
144 int imx_drm_crtc_vblank_get(struct imx_drm_crtc
*imx_drm_crtc
)
146 return drm_vblank_get(imx_drm_crtc
->crtc
->dev
, imx_drm_crtc
->pipe
);
148 EXPORT_SYMBOL_GPL(imx_drm_crtc_vblank_get
);
150 void imx_drm_crtc_vblank_put(struct imx_drm_crtc
*imx_drm_crtc
)
152 drm_vblank_put(imx_drm_crtc
->crtc
->dev
, imx_drm_crtc
->pipe
);
154 EXPORT_SYMBOL_GPL(imx_drm_crtc_vblank_put
);
156 void imx_drm_handle_vblank(struct imx_drm_crtc
*imx_drm_crtc
)
158 drm_handle_vblank(imx_drm_crtc
->crtc
->dev
, imx_drm_crtc
->pipe
);
160 EXPORT_SYMBOL_GPL(imx_drm_handle_vblank
);
162 static int imx_drm_enable_vblank(struct drm_device
*drm
, int crtc
)
164 struct imx_drm_device
*imxdrm
= drm
->dev_private
;
165 struct imx_drm_crtc
*imx_drm_crtc
;
168 imx_drm_crtc
= imx_drm_crtc_by_num(imxdrm
, crtc
);
172 if (!imx_drm_crtc
->imx_drm_helper_funcs
.enable_vblank
)
175 ret
= imx_drm_crtc
->imx_drm_helper_funcs
.enable_vblank(
181 static void imx_drm_disable_vblank(struct drm_device
*drm
, int crtc
)
183 struct imx_drm_device
*imxdrm
= drm
->dev_private
;
184 struct imx_drm_crtc
*imx_drm_crtc
;
186 imx_drm_crtc
= imx_drm_crtc_by_num(imxdrm
, crtc
);
190 if (!imx_drm_crtc
->imx_drm_helper_funcs
.disable_vblank
)
193 imx_drm_crtc
->imx_drm_helper_funcs
.disable_vblank(imx_drm_crtc
->crtc
);
196 static void imx_drm_driver_preclose(struct drm_device
*drm
,
197 struct drm_file
*file
)
201 if (!file
->is_master
)
204 for (i
= 0; i
< MAX_CRTC
; i
++)
205 imx_drm_disable_vblank(drm
, i
);
208 static const struct file_operations imx_drm_driver_fops
= {
209 .owner
= THIS_MODULE
,
211 .release
= drm_release
,
212 .unlocked_ioctl
= drm_ioctl
,
213 .mmap
= drm_gem_cma_mmap
,
216 .llseek
= noop_llseek
,
219 static struct imx_drm_device
*imx_drm_device
;
221 static struct imx_drm_device
*__imx_drm_device(void)
223 return imx_drm_device
;
226 struct drm_device
*imx_drm_device_get(void)
228 struct imx_drm_device
*imxdrm
= __imx_drm_device();
229 struct imx_drm_encoder
*enc
;
230 struct imx_drm_connector
*con
;
231 struct imx_drm_crtc
*crtc
;
233 list_for_each_entry(enc
, &imxdrm
->encoder_list
, list
) {
234 if (!try_module_get(enc
->owner
)) {
235 dev_err(imxdrm
->dev
, "could not get module %s\n",
236 module_name(enc
->owner
));
241 list_for_each_entry(con
, &imxdrm
->connector_list
, list
) {
242 if (!try_module_get(con
->owner
)) {
243 dev_err(imxdrm
->dev
, "could not get module %s\n",
244 module_name(con
->owner
));
249 list_for_each_entry(crtc
, &imxdrm
->crtc_list
, list
) {
250 if (!try_module_get(crtc
->owner
)) {
251 dev_err(imxdrm
->dev
, "could not get module %s\n",
252 module_name(crtc
->owner
));
260 list_for_each_entry_continue_reverse(crtc
, &imxdrm
->crtc_list
, list
)
261 module_put(crtc
->owner
);
263 list_for_each_entry_continue_reverse(con
, &imxdrm
->connector_list
, list
)
264 module_put(con
->owner
);
266 list_for_each_entry_continue_reverse(enc
, &imxdrm
->encoder_list
, list
)
267 module_put(enc
->owner
);
269 mutex_unlock(&imxdrm
->mutex
);
274 EXPORT_SYMBOL_GPL(imx_drm_device_get
);
276 void imx_drm_device_put(void)
278 struct imx_drm_device
*imxdrm
= __imx_drm_device();
279 struct imx_drm_encoder
*enc
;
280 struct imx_drm_connector
*con
;
281 struct imx_drm_crtc
*crtc
;
283 mutex_lock(&imxdrm
->mutex
);
285 list_for_each_entry(crtc
, &imxdrm
->crtc_list
, list
)
286 module_put(crtc
->owner
);
288 list_for_each_entry(con
, &imxdrm
->connector_list
, list
)
289 module_put(con
->owner
);
291 list_for_each_entry(enc
, &imxdrm
->encoder_list
, list
)
292 module_put(enc
->owner
);
294 mutex_unlock(&imxdrm
->mutex
);
296 EXPORT_SYMBOL_GPL(imx_drm_device_put
);
298 static int drm_mode_group_reinit(struct drm_device
*dev
)
300 struct drm_mode_group
*group
= &dev
->primary
->mode_group
;
301 uint32_t *id_list
= group
->id_list
;
304 ret
= drm_mode_group_init_legacy_group(dev
, group
);
313 * register an encoder to the drm core
315 static int imx_drm_encoder_register(struct imx_drm_encoder
*imx_drm_encoder
)
317 struct imx_drm_device
*imxdrm
= __imx_drm_device();
319 INIT_LIST_HEAD(&imx_drm_encoder
->possible_crtcs
);
321 drm_encoder_init(imxdrm
->drm
, imx_drm_encoder
->encoder
,
322 imx_drm_encoder
->encoder
->funcs
,
323 imx_drm_encoder
->encoder
->encoder_type
);
325 drm_mode_group_reinit(imxdrm
->drm
);
331 * unregister an encoder from the drm core
333 static void imx_drm_encoder_unregister(struct imx_drm_encoder
336 struct imx_drm_device
*imxdrm
= __imx_drm_device();
338 drm_encoder_cleanup(imx_drm_encoder
->encoder
);
340 drm_mode_group_reinit(imxdrm
->drm
);
344 * register a connector to the drm core
346 static int imx_drm_connector_register(
347 struct imx_drm_connector
*imx_drm_connector
)
349 struct imx_drm_device
*imxdrm
= __imx_drm_device();
351 drm_connector_init(imxdrm
->drm
, imx_drm_connector
->connector
,
352 imx_drm_connector
->connector
->funcs
,
353 imx_drm_connector
->connector
->connector_type
);
354 drm_mode_group_reinit(imxdrm
->drm
);
356 return drm_sysfs_connector_add(imx_drm_connector
->connector
);
360 * unregister a connector from the drm core
362 static void imx_drm_connector_unregister(
363 struct imx_drm_connector
*imx_drm_connector
)
365 struct imx_drm_device
*imxdrm
= __imx_drm_device();
367 drm_sysfs_connector_remove(imx_drm_connector
->connector
);
368 drm_connector_cleanup(imx_drm_connector
->connector
);
370 drm_mode_group_reinit(imxdrm
->drm
);
374 * Called by the CRTC driver when all CRTCs are registered. This
375 * puts all the pieces together and initializes the driver.
376 * Once this is called no more CRTCs can be registered since
377 * the drm core has hardcoded the number of crtcs in several
380 static int imx_drm_driver_load(struct drm_device
*drm
, unsigned long flags
)
382 struct imx_drm_device
*imxdrm
= __imx_drm_device();
387 drm
->dev_private
= imxdrm
;
390 * enable drm irq mode.
391 * - with irq_enabled = true, we can use the vblank feature.
393 * P.S. note that we wouldn't use drm irq handler but
394 * just specific driver own one instead because
395 * drm framework supports only one irq handler and
396 * drivers can well take care of their interrupts
398 drm
->irq_enabled
= true;
400 drm_mode_config_init(drm
);
401 imx_drm_mode_config_init(drm
);
403 mutex_lock(&imxdrm
->mutex
);
405 drm_kms_helper_poll_init(drm
);
407 /* setup the grouping for the legacy output */
408 ret
= drm_mode_group_init_legacy_group(drm
,
409 &drm
->primary
->mode_group
);
413 ret
= drm_vblank_init(drm
, MAX_CRTC
);
418 * with vblank_disable_allowed = true, vblank interrupt will be disabled
419 * by drm timer once a current process gives up ownership of
420 * vblank event.(after drm_vblank_put function is called)
422 drm
->vblank_disable_allowed
= true;
424 if (!imx_drm_device_get()) {
429 platform_set_drvdata(drm
->platformdev
, drm
);
430 mutex_unlock(&imxdrm
->mutex
);
434 drm_vblank_cleanup(drm
);
436 drm_kms_helper_poll_fini(drm
);
437 drm_mode_config_cleanup(drm
);
438 mutex_unlock(&imxdrm
->mutex
);
443 static void imx_drm_update_possible_crtcs(void)
445 struct imx_drm_device
*imxdrm
= __imx_drm_device();
446 struct imx_drm_crtc
*imx_drm_crtc
;
447 struct imx_drm_encoder
*enc
;
448 struct crtc_cookie
*cookie
;
450 list_for_each_entry(enc
, &imxdrm
->encoder_list
, list
) {
451 u32 possible_crtcs
= 0;
453 list_for_each_entry(cookie
, &enc
->possible_crtcs
, list
) {
454 list_for_each_entry(imx_drm_crtc
, &imxdrm
->crtc_list
, list
) {
455 if (imx_drm_crtc
->cookie
.cookie
== cookie
->cookie
&&
456 imx_drm_crtc
->cookie
.id
== cookie
->id
) {
457 possible_crtcs
|= 1 << imx_drm_crtc
->pipe
;
461 enc
->encoder
->possible_crtcs
= possible_crtcs
;
462 enc
->encoder
->possible_clones
= possible_crtcs
;
467 * imx_drm_add_crtc - add a new crtc
469 * The return value if !NULL is a cookie for the caller to pass to
470 * imx_drm_remove_crtc later.
472 int imx_drm_add_crtc(struct drm_crtc
*crtc
,
473 struct imx_drm_crtc
**new_crtc
,
474 const struct imx_drm_crtc_helper_funcs
*imx_drm_helper_funcs
,
475 struct module
*owner
, void *cookie
, int id
)
477 struct imx_drm_device
*imxdrm
= __imx_drm_device();
478 struct imx_drm_crtc
*imx_drm_crtc
;
481 mutex_lock(&imxdrm
->mutex
);
484 * The vblank arrays are dimensioned by MAX_CRTC - we can't
485 * pass IDs greater than this to those functions.
487 if (imxdrm
->pipes
>= MAX_CRTC
) {
492 if (imxdrm
->drm
->open_count
) {
497 imx_drm_crtc
= kzalloc(sizeof(*imx_drm_crtc
), GFP_KERNEL
);
503 imx_drm_crtc
->imx_drm_helper_funcs
= *imx_drm_helper_funcs
;
504 imx_drm_crtc
->pipe
= imxdrm
->pipes
++;
505 imx_drm_crtc
->cookie
.cookie
= cookie
;
506 imx_drm_crtc
->cookie
.id
= id
;
507 imx_drm_crtc
->mux_id
= imx_drm_crtc
->pipe
;
508 imx_drm_crtc
->crtc
= crtc
;
509 imx_drm_crtc
->imxdrm
= imxdrm
;
511 imx_drm_crtc
->owner
= owner
;
513 list_add_tail(&imx_drm_crtc
->list
, &imxdrm
->crtc_list
);
515 *new_crtc
= imx_drm_crtc
;
517 ret
= drm_mode_crtc_set_gamma_size(imx_drm_crtc
->crtc
, 256);
521 drm_crtc_helper_add(crtc
,
522 imx_drm_crtc
->imx_drm_helper_funcs
.crtc_helper_funcs
);
524 drm_crtc_init(imxdrm
->drm
, crtc
,
525 imx_drm_crtc
->imx_drm_helper_funcs
.crtc_funcs
);
527 drm_mode_group_reinit(imxdrm
->drm
);
529 imx_drm_update_possible_crtcs();
531 mutex_unlock(&imxdrm
->mutex
);
536 list_del(&imx_drm_crtc
->list
);
540 mutex_unlock(&imxdrm
->mutex
);
543 EXPORT_SYMBOL_GPL(imx_drm_add_crtc
);
546 * imx_drm_remove_crtc - remove a crtc
548 int imx_drm_remove_crtc(struct imx_drm_crtc
*imx_drm_crtc
)
550 struct imx_drm_device
*imxdrm
= imx_drm_crtc
->imxdrm
;
552 mutex_lock(&imxdrm
->mutex
);
554 drm_crtc_cleanup(imx_drm_crtc
->crtc
);
556 list_del(&imx_drm_crtc
->list
);
558 drm_mode_group_reinit(imxdrm
->drm
);
560 mutex_unlock(&imxdrm
->mutex
);
566 EXPORT_SYMBOL_GPL(imx_drm_remove_crtc
);
569 * imx_drm_add_encoder - add a new encoder
571 int imx_drm_add_encoder(struct drm_encoder
*encoder
,
572 struct imx_drm_encoder
**newenc
, struct module
*owner
)
574 struct imx_drm_device
*imxdrm
= __imx_drm_device();
575 struct imx_drm_encoder
*imx_drm_encoder
;
578 mutex_lock(&imxdrm
->mutex
);
580 if (imxdrm
->drm
->open_count
) {
585 imx_drm_encoder
= kzalloc(sizeof(*imx_drm_encoder
), GFP_KERNEL
);
586 if (!imx_drm_encoder
) {
591 imx_drm_encoder
->encoder
= encoder
;
592 imx_drm_encoder
->owner
= owner
;
594 ret
= imx_drm_encoder_register(imx_drm_encoder
);
600 list_add_tail(&imx_drm_encoder
->list
, &imxdrm
->encoder_list
);
602 *newenc
= imx_drm_encoder
;
604 mutex_unlock(&imxdrm
->mutex
);
609 kfree(imx_drm_encoder
);
612 mutex_unlock(&imxdrm
->mutex
);
616 EXPORT_SYMBOL_GPL(imx_drm_add_encoder
);
618 int imx_drm_encoder_add_possible_crtcs(
619 struct imx_drm_encoder
*imx_drm_encoder
,
620 struct device_node
*np
)
622 struct imx_drm_device
*imxdrm
= __imx_drm_device();
623 struct of_phandle_args args
;
624 struct crtc_cookie
*c
;
628 if (!list_empty(&imx_drm_encoder
->possible_crtcs
))
631 for (i
= 0; !ret
; i
++) {
632 ret
= of_parse_phandle_with_args(np
, "crtcs",
633 "#crtc-cells", i
, &args
);
637 c
= kzalloc(sizeof(*c
), GFP_KERNEL
);
639 of_node_put(args
.np
);
644 c
->id
= args
.args_count
> 0 ? args
.args
[0] : 0;
646 of_node_put(args
.np
);
648 mutex_lock(&imxdrm
->mutex
);
650 list_add_tail(&c
->list
, &imx_drm_encoder
->possible_crtcs
);
652 mutex_unlock(&imxdrm
->mutex
);
655 imx_drm_update_possible_crtcs();
659 EXPORT_SYMBOL_GPL(imx_drm_encoder_add_possible_crtcs
);
661 int imx_drm_encoder_get_mux_id(struct drm_encoder
*encoder
)
663 struct imx_drm_device
*imxdrm
= __imx_drm_device();
664 struct imx_drm_crtc
*imx_crtc
;
666 list_for_each_entry(imx_crtc
, &imxdrm
->crtc_list
, list
)
667 if (imx_crtc
->crtc
== encoder
->crtc
)
668 return imx_crtc
->mux_id
;
672 EXPORT_SYMBOL_GPL(imx_drm_encoder_get_mux_id
);
675 * imx_drm_remove_encoder - remove an encoder
677 int imx_drm_remove_encoder(struct imx_drm_encoder
*imx_drm_encoder
)
679 struct imx_drm_device
*imxdrm
= __imx_drm_device();
680 struct crtc_cookie
*c
, *tmp
;
682 mutex_lock(&imxdrm
->mutex
);
684 imx_drm_encoder_unregister(imx_drm_encoder
);
686 list_del(&imx_drm_encoder
->list
);
688 list_for_each_entry_safe(c
, tmp
, &imx_drm_encoder
->possible_crtcs
,
692 mutex_unlock(&imxdrm
->mutex
);
694 kfree(imx_drm_encoder
);
698 EXPORT_SYMBOL_GPL(imx_drm_remove_encoder
);
701 * imx_drm_add_connector - add a connector
703 int imx_drm_add_connector(struct drm_connector
*connector
,
704 struct imx_drm_connector
**new_con
,
705 struct module
*owner
)
707 struct imx_drm_device
*imxdrm
= __imx_drm_device();
708 struct imx_drm_connector
*imx_drm_connector
;
711 mutex_lock(&imxdrm
->mutex
);
713 if (imxdrm
->drm
->open_count
) {
718 imx_drm_connector
= kzalloc(sizeof(*imx_drm_connector
), GFP_KERNEL
);
719 if (!imx_drm_connector
) {
724 imx_drm_connector
->connector
= connector
;
725 imx_drm_connector
->owner
= owner
;
727 ret
= imx_drm_connector_register(imx_drm_connector
);
731 list_add_tail(&imx_drm_connector
->list
, &imxdrm
->connector_list
);
733 *new_con
= imx_drm_connector
;
735 mutex_unlock(&imxdrm
->mutex
);
740 kfree(imx_drm_connector
);
743 mutex_unlock(&imxdrm
->mutex
);
747 EXPORT_SYMBOL_GPL(imx_drm_add_connector
);
749 void imx_drm_fb_helper_set(struct drm_fbdev_cma
*fbdev_helper
)
751 struct imx_drm_device
*imxdrm
= __imx_drm_device();
753 imxdrm
->fbhelper
= fbdev_helper
;
755 EXPORT_SYMBOL_GPL(imx_drm_fb_helper_set
);
758 * imx_drm_remove_connector - remove a connector
760 int imx_drm_remove_connector(struct imx_drm_connector
*imx_drm_connector
)
762 struct imx_drm_device
*imxdrm
= __imx_drm_device();
764 mutex_lock(&imxdrm
->mutex
);
766 imx_drm_connector_unregister(imx_drm_connector
);
768 list_del(&imx_drm_connector
->list
);
770 mutex_unlock(&imxdrm
->mutex
);
772 kfree(imx_drm_connector
);
776 EXPORT_SYMBOL_GPL(imx_drm_remove_connector
);
778 static const struct drm_ioctl_desc imx_drm_ioctls
[] = {
782 static struct drm_driver imx_drm_driver
= {
783 .driver_features
= DRIVER_MODESET
| DRIVER_GEM
| DRIVER_PRIME
,
784 .load
= imx_drm_driver_load
,
785 .unload
= imx_drm_driver_unload
,
786 .lastclose
= imx_drm_driver_lastclose
,
787 .preclose
= imx_drm_driver_preclose
,
788 .gem_free_object
= drm_gem_cma_free_object
,
789 .gem_vm_ops
= &drm_gem_cma_vm_ops
,
790 .dumb_create
= drm_gem_cma_dumb_create
,
791 .dumb_map_offset
= drm_gem_cma_dumb_map_offset
,
792 .dumb_destroy
= drm_gem_dumb_destroy
,
794 .prime_handle_to_fd
= drm_gem_prime_handle_to_fd
,
795 .prime_fd_to_handle
= drm_gem_prime_fd_to_handle
,
796 .gem_prime_import
= drm_gem_prime_import
,
797 .gem_prime_export
= drm_gem_prime_export
,
798 .gem_prime_get_sg_table
= drm_gem_cma_prime_get_sg_table
,
799 .gem_prime_import_sg_table
= drm_gem_cma_prime_import_sg_table
,
800 .gem_prime_vmap
= drm_gem_cma_prime_vmap
,
801 .gem_prime_vunmap
= drm_gem_cma_prime_vunmap
,
802 .gem_prime_mmap
= drm_gem_cma_prime_mmap
,
803 .get_vblank_counter
= drm_vblank_count
,
804 .enable_vblank
= imx_drm_enable_vblank
,
805 .disable_vblank
= imx_drm_disable_vblank
,
806 .ioctls
= imx_drm_ioctls
,
807 .num_ioctls
= ARRAY_SIZE(imx_drm_ioctls
),
808 .fops
= &imx_drm_driver_fops
,
810 .desc
= "i.MX DRM graphics",
817 static int imx_drm_platform_probe(struct platform_device
*pdev
)
821 ret
= dma_set_coherent_mask(&pdev
->dev
, DMA_BIT_MASK(32));
825 imx_drm_device
->dev
= &pdev
->dev
;
827 return drm_platform_init(&imx_drm_driver
, pdev
);
830 static int imx_drm_platform_remove(struct platform_device
*pdev
)
832 drm_put_dev(platform_get_drvdata(pdev
));
837 static struct platform_driver imx_drm_pdrv
= {
838 .probe
= imx_drm_platform_probe
,
839 .remove
= imx_drm_platform_remove
,
841 .owner
= THIS_MODULE
,
846 static struct platform_device
*imx_drm_pdev
;
848 static int __init
imx_drm_init(void)
852 imx_drm_device
= kzalloc(sizeof(*imx_drm_device
), GFP_KERNEL
);
856 mutex_init(&imx_drm_device
->mutex
);
857 INIT_LIST_HEAD(&imx_drm_device
->crtc_list
);
858 INIT_LIST_HEAD(&imx_drm_device
->connector_list
);
859 INIT_LIST_HEAD(&imx_drm_device
->encoder_list
);
861 imx_drm_pdev
= platform_device_register_simple("imx-drm", -1, NULL
, 0);
862 if (IS_ERR(imx_drm_pdev
)) {
863 ret
= PTR_ERR(imx_drm_pdev
);
867 ret
= platform_driver_register(&imx_drm_pdrv
);
874 platform_device_unregister(imx_drm_pdev
);
876 kfree(imx_drm_device
);
881 static void __exit
imx_drm_exit(void)
883 platform_device_unregister(imx_drm_pdev
);
884 platform_driver_unregister(&imx_drm_pdrv
);
886 kfree(imx_drm_device
);
889 module_init(imx_drm_init
);
890 module_exit(imx_drm_exit
);
892 MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
893 MODULE_DESCRIPTION("i.MX drm driver core");
894 MODULE_LICENSE("GPL");