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(imxdrm
->drm
);
92 drm_kms_helper_poll_fini(imxdrm
->drm
);
93 drm_mode_config_cleanup(imxdrm
->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
->imxdrm
->drm
, 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
->imxdrm
->drm
, 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
->imxdrm
->drm
, 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 * register a crtc to the drm core
375 static int imx_drm_crtc_register(struct imx_drm_crtc
*imx_drm_crtc
)
377 struct imx_drm_device
*imxdrm
= __imx_drm_device();
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_crtc_init(imxdrm
->drm
, imx_drm_crtc
->crtc
,
388 imx_drm_crtc
->imx_drm_helper_funcs
.crtc_funcs
);
390 drm_mode_group_reinit(imxdrm
->drm
);
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
402 static int imx_drm_driver_load(struct drm_device
*drm
, unsigned long flags
)
404 struct imx_drm_device
*imxdrm
= __imx_drm_device();
409 drm
->dev_private
= imxdrm
;
412 * enable drm irq mode.
413 * - with irq_enabled = true, we can use the vblank feature.
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
420 drm
->irq_enabled
= true;
422 drm_mode_config_init(drm
);
423 imx_drm_mode_config_init(drm
);
425 mutex_lock(&imxdrm
->mutex
);
427 drm_kms_helper_poll_init(imxdrm
->drm
);
429 /* setup the grouping for the legacy output */
430 ret
= drm_mode_group_init_legacy_group(imxdrm
->drm
,
431 &imxdrm
->drm
->primary
->mode_group
);
435 ret
= drm_vblank_init(imxdrm
->drm
, MAX_CRTC
);
440 * with vblank_disable_allowed = true, vblank interrupt will be disabled
441 * by drm timer once a current process gives up ownership of
442 * vblank event.(after drm_vblank_put function is called)
444 imxdrm
->drm
->vblank_disable_allowed
= true;
446 if (!imx_drm_device_get()) {
451 platform_set_drvdata(drm
->platformdev
, drm
);
452 mutex_unlock(&imxdrm
->mutex
);
456 drm_vblank_cleanup(drm
);
458 drm_kms_helper_poll_fini(drm
);
459 drm_mode_config_cleanup(drm
);
460 mutex_unlock(&imxdrm
->mutex
);
465 static void imx_drm_update_possible_crtcs(void)
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
;
472 list_for_each_entry(enc
, &imxdrm
->encoder_list
, list
) {
473 u32 possible_crtcs
= 0;
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
;
483 enc
->encoder
->possible_crtcs
= possible_crtcs
;
484 enc
->encoder
->possible_clones
= possible_crtcs
;
489 * imx_drm_add_crtc - add a new crtc
491 * The return value if !NULL is a cookie for the caller to pass to
492 * imx_drm_remove_crtc later.
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
)
499 struct imx_drm_device
*imxdrm
= __imx_drm_device();
500 struct imx_drm_crtc
*imx_drm_crtc
;
503 mutex_lock(&imxdrm
->mutex
);
506 * The vblank arrays are dimensioned by MAX_CRTC - we can't
507 * pass IDs greater than this to those functions.
509 if (imxdrm
->pipes
>= MAX_CRTC
) {
514 if (imxdrm
->drm
->open_count
) {
519 imx_drm_crtc
= kzalloc(sizeof(*imx_drm_crtc
), GFP_KERNEL
);
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
;
530 imx_drm_crtc
->crtc
= crtc
;
531 imx_drm_crtc
->imxdrm
= imxdrm
;
533 imx_drm_crtc
->owner
= owner
;
535 list_add_tail(&imx_drm_crtc
->list
, &imxdrm
->crtc_list
);
537 *new_crtc
= imx_drm_crtc
;
539 ret
= imx_drm_crtc_register(imx_drm_crtc
);
543 imx_drm_update_possible_crtcs();
545 mutex_unlock(&imxdrm
->mutex
);
550 list_del(&imx_drm_crtc
->list
);
554 mutex_unlock(&imxdrm
->mutex
);
557 EXPORT_SYMBOL_GPL(imx_drm_add_crtc
);
560 * imx_drm_remove_crtc - remove a crtc
562 int imx_drm_remove_crtc(struct imx_drm_crtc
*imx_drm_crtc
)
564 struct imx_drm_device
*imxdrm
= imx_drm_crtc
->imxdrm
;
566 mutex_lock(&imxdrm
->mutex
);
568 drm_crtc_cleanup(imx_drm_crtc
->crtc
);
570 list_del(&imx_drm_crtc
->list
);
572 drm_mode_group_reinit(imxdrm
->drm
);
574 mutex_unlock(&imxdrm
->mutex
);
580 EXPORT_SYMBOL_GPL(imx_drm_remove_crtc
);
583 * imx_drm_add_encoder - add a new encoder
585 int imx_drm_add_encoder(struct drm_encoder
*encoder
,
586 struct imx_drm_encoder
**newenc
, struct module
*owner
)
588 struct imx_drm_device
*imxdrm
= __imx_drm_device();
589 struct imx_drm_encoder
*imx_drm_encoder
;
592 mutex_lock(&imxdrm
->mutex
);
594 if (imxdrm
->drm
->open_count
) {
599 imx_drm_encoder
= kzalloc(sizeof(*imx_drm_encoder
), GFP_KERNEL
);
600 if (!imx_drm_encoder
) {
605 imx_drm_encoder
->encoder
= encoder
;
606 imx_drm_encoder
->owner
= owner
;
608 ret
= imx_drm_encoder_register(imx_drm_encoder
);
614 list_add_tail(&imx_drm_encoder
->list
, &imxdrm
->encoder_list
);
616 *newenc
= imx_drm_encoder
;
618 mutex_unlock(&imxdrm
->mutex
);
623 kfree(imx_drm_encoder
);
626 mutex_unlock(&imxdrm
->mutex
);
630 EXPORT_SYMBOL_GPL(imx_drm_add_encoder
);
632 int imx_drm_encoder_add_possible_crtcs(
633 struct imx_drm_encoder
*imx_drm_encoder
,
634 struct device_node
*np
)
636 struct imx_drm_device
*imxdrm
= __imx_drm_device();
637 struct of_phandle_args args
;
638 struct crtc_cookie
*c
;
642 if (!list_empty(&imx_drm_encoder
->possible_crtcs
))
645 for (i
= 0; !ret
; i
++) {
646 ret
= of_parse_phandle_with_args(np
, "crtcs",
647 "#crtc-cells", i
, &args
);
651 c
= kzalloc(sizeof(*c
), GFP_KERNEL
);
653 of_node_put(args
.np
);
658 c
->id
= args
.args_count
> 0 ? args
.args
[0] : 0;
660 of_node_put(args
.np
);
662 mutex_lock(&imxdrm
->mutex
);
664 list_add_tail(&c
->list
, &imx_drm_encoder
->possible_crtcs
);
666 mutex_unlock(&imxdrm
->mutex
);
669 imx_drm_update_possible_crtcs();
673 EXPORT_SYMBOL_GPL(imx_drm_encoder_add_possible_crtcs
);
675 int imx_drm_encoder_get_mux_id(struct imx_drm_encoder
*imx_drm_encoder
,
676 struct drm_crtc
*crtc
)
678 struct imx_drm_device
*imxdrm
= __imx_drm_device();
679 struct imx_drm_crtc
*imx_crtc
;
682 list_for_each_entry(imx_crtc
, &imxdrm
->crtc_list
, list
) {
683 if (imx_crtc
->crtc
== crtc
)
692 EXPORT_SYMBOL_GPL(imx_drm_encoder_get_mux_id
);
695 * imx_drm_remove_encoder - remove an encoder
697 int imx_drm_remove_encoder(struct imx_drm_encoder
*imx_drm_encoder
)
699 struct imx_drm_device
*imxdrm
= __imx_drm_device();
700 struct crtc_cookie
*c
, *tmp
;
702 mutex_lock(&imxdrm
->mutex
);
704 imx_drm_encoder_unregister(imx_drm_encoder
);
706 list_del(&imx_drm_encoder
->list
);
708 list_for_each_entry_safe(c
, tmp
, &imx_drm_encoder
->possible_crtcs
,
712 mutex_unlock(&imxdrm
->mutex
);
714 kfree(imx_drm_encoder
);
718 EXPORT_SYMBOL_GPL(imx_drm_remove_encoder
);
721 * imx_drm_add_connector - add a connector
723 int imx_drm_add_connector(struct drm_connector
*connector
,
724 struct imx_drm_connector
**new_con
,
725 struct module
*owner
)
727 struct imx_drm_device
*imxdrm
= __imx_drm_device();
728 struct imx_drm_connector
*imx_drm_connector
;
731 mutex_lock(&imxdrm
->mutex
);
733 if (imxdrm
->drm
->open_count
) {
738 imx_drm_connector
= kzalloc(sizeof(*imx_drm_connector
), GFP_KERNEL
);
739 if (!imx_drm_connector
) {
744 imx_drm_connector
->connector
= connector
;
745 imx_drm_connector
->owner
= owner
;
747 ret
= imx_drm_connector_register(imx_drm_connector
);
751 list_add_tail(&imx_drm_connector
->list
, &imxdrm
->connector_list
);
753 *new_con
= imx_drm_connector
;
755 mutex_unlock(&imxdrm
->mutex
);
760 kfree(imx_drm_connector
);
763 mutex_unlock(&imxdrm
->mutex
);
767 EXPORT_SYMBOL_GPL(imx_drm_add_connector
);
769 void imx_drm_fb_helper_set(struct drm_fbdev_cma
*fbdev_helper
)
771 struct imx_drm_device
*imxdrm
= __imx_drm_device();
773 imxdrm
->fbhelper
= fbdev_helper
;
775 EXPORT_SYMBOL_GPL(imx_drm_fb_helper_set
);
778 * imx_drm_remove_connector - remove a connector
780 int imx_drm_remove_connector(struct imx_drm_connector
*imx_drm_connector
)
782 struct imx_drm_device
*imxdrm
= __imx_drm_device();
784 mutex_lock(&imxdrm
->mutex
);
786 imx_drm_connector_unregister(imx_drm_connector
);
788 list_del(&imx_drm_connector
->list
);
790 mutex_unlock(&imxdrm
->mutex
);
792 kfree(imx_drm_connector
);
796 EXPORT_SYMBOL_GPL(imx_drm_remove_connector
);
798 static const struct drm_ioctl_desc imx_drm_ioctls
[] = {
802 static struct drm_driver imx_drm_driver
= {
803 .driver_features
= DRIVER_MODESET
| DRIVER_GEM
| DRIVER_PRIME
,
804 .load
= imx_drm_driver_load
,
805 .unload
= imx_drm_driver_unload
,
806 .lastclose
= imx_drm_driver_lastclose
,
807 .preclose
= imx_drm_driver_preclose
,
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
,
812 .dumb_destroy
= drm_gem_dumb_destroy
,
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
,
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
,
830 .desc
= "i.MX DRM graphics",
837 static int imx_drm_platform_probe(struct platform_device
*pdev
)
841 ret
= dma_set_coherent_mask(&pdev
->dev
, DMA_BIT_MASK(32));
845 imx_drm_device
->dev
= &pdev
->dev
;
847 return drm_platform_init(&imx_drm_driver
, pdev
);
850 static int imx_drm_platform_remove(struct platform_device
*pdev
)
852 drm_put_dev(platform_get_drvdata(pdev
));
857 static struct platform_driver imx_drm_pdrv
= {
858 .probe
= imx_drm_platform_probe
,
859 .remove
= imx_drm_platform_remove
,
861 .owner
= THIS_MODULE
,
866 static struct platform_device
*imx_drm_pdev
;
868 static int __init
imx_drm_init(void)
872 imx_drm_device
= kzalloc(sizeof(*imx_drm_device
), GFP_KERNEL
);
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
);
881 imx_drm_pdev
= platform_device_register_simple("imx-drm", -1, NULL
, 0);
882 if (IS_ERR(imx_drm_pdev
)) {
883 ret
= PTR_ERR(imx_drm_pdev
);
887 ret
= platform_driver_register(&imx_drm_pdrv
);
894 platform_device_unregister(imx_drm_pdev
);
896 kfree(imx_drm_device
);
901 static void __exit
imx_drm_exit(void)
903 platform_device_unregister(imx_drm_pdev
);
904 platform_driver_unregister(&imx_drm_pdrv
);
906 kfree(imx_drm_device
);
909 module_init(imx_drm_init
);
910 module_exit(imx_drm_exit
);
912 MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
913 MODULE_DESCRIPTION("i.MX drm driver core");
914 MODULE_LICENSE("GPL");