2 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
4 * Inki Dae <inki.dae@samsung.com>
5 * Joonyoung Shim <jy0922.shim@samsung.com>
6 * Seung-Woo Kim <sw0312.kim@samsung.com>
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
14 #include <linux/pm_runtime.h>
16 #include <drm/drm_crtc_helper.h>
18 #include <linux/component.h>
20 #include <drm/exynos_drm.h>
22 #include "exynos_drm_drv.h"
23 #include "exynos_drm_crtc.h"
24 #include "exynos_drm_encoder.h"
25 #include "exynos_drm_fbdev.h"
26 #include "exynos_drm_fb.h"
27 #include "exynos_drm_gem.h"
28 #include "exynos_drm_plane.h"
29 #include "exynos_drm_vidi.h"
30 #include "exynos_drm_dmabuf.h"
31 #include "exynos_drm_g2d.h"
32 #include "exynos_drm_ipp.h"
33 #include "exynos_drm_iommu.h"
35 #define DRIVER_NAME "exynos"
36 #define DRIVER_DESC "Samsung SoC DRM"
37 #define DRIVER_DATE "20110530"
38 #define DRIVER_MAJOR 1
39 #define DRIVER_MINOR 0
41 static struct platform_device
*exynos_drm_pdev
;
43 static DEFINE_MUTEX(drm_component_lock
);
44 static LIST_HEAD(drm_component_list
);
46 struct component_dev
{
47 struct list_head list
;
48 struct device
*crtc_dev
;
49 struct device
*conn_dev
;
50 enum exynos_drm_output_type out_type
;
51 unsigned int dev_type_flag
;
54 static int exynos_drm_load(struct drm_device
*dev
, unsigned long flags
)
56 struct exynos_drm_private
*private;
60 private = kzalloc(sizeof(struct exynos_drm_private
), GFP_KERNEL
);
64 INIT_LIST_HEAD(&private->pageflip_event_list
);
65 dev_set_drvdata(dev
->dev
, dev
);
66 dev
->dev_private
= (void *)private;
69 * create mapping to manage iommu table and set a pointer to iommu
70 * mapping structure to iommu_mapping of private data.
71 * also this iommu_mapping can be used to check if iommu is supported
74 ret
= drm_create_iommu_mapping(dev
);
76 DRM_ERROR("failed to create iommu mapping.\n");
77 goto err_free_private
;
80 drm_mode_config_init(dev
);
82 exynos_drm_mode_config_init(dev
);
84 for (nr
= 0; nr
< MAX_PLANE
; nr
++) {
85 struct drm_plane
*plane
;
86 unsigned long possible_crtcs
= (1 << MAX_CRTC
) - 1;
88 plane
= exynos_plane_init(dev
, possible_crtcs
,
89 DRM_PLANE_TYPE_OVERLAY
);
94 goto err_mode_config_cleanup
;
97 /* setup possible_clones. */
98 exynos_drm_encoder_setup(dev
);
100 platform_set_drvdata(dev
->platformdev
, dev
);
102 /* Try to bind all sub drivers. */
103 ret
= component_bind_all(dev
->dev
, dev
);
105 goto err_mode_config_cleanup
;
107 ret
= drm_vblank_init(dev
, dev
->mode_config
.num_crtc
);
111 /* Probe non kms sub drivers and virtual display driver. */
112 ret
= exynos_drm_device_subdrv_probe(dev
);
114 goto err_cleanup_vblank
;
117 * enable drm irq mode.
118 * - with irq_enabled = true, we can use the vblank feature.
120 * P.S. note that we wouldn't use drm irq handler but
121 * just specific driver own one instead because
122 * drm framework supports only one irq handler.
124 dev
->irq_enabled
= true;
127 * with vblank_disable_allowed = true, vblank interrupt will be disabled
128 * by drm timer once a current process gives up ownership of
129 * vblank event.(after drm_vblank_put function is called)
131 dev
->vblank_disable_allowed
= true;
133 /* init kms poll for handling hpd */
134 drm_kms_helper_poll_init(dev
);
136 /* force connectors detection */
137 drm_helper_hpd_irq_event(dev
);
142 drm_vblank_cleanup(dev
);
144 component_unbind_all(dev
->dev
, dev
);
145 err_mode_config_cleanup
:
146 drm_mode_config_cleanup(dev
);
147 drm_release_iommu_mapping(dev
);
154 static int exynos_drm_unload(struct drm_device
*dev
)
156 exynos_drm_device_subdrv_remove(dev
);
158 exynos_drm_fbdev_fini(dev
);
159 drm_kms_helper_poll_fini(dev
);
161 drm_vblank_cleanup(dev
);
162 component_unbind_all(dev
->dev
, dev
);
163 drm_mode_config_cleanup(dev
);
164 drm_release_iommu_mapping(dev
);
166 kfree(dev
->dev_private
);
167 dev
->dev_private
= NULL
;
172 static int exynos_drm_suspend(struct drm_device
*dev
, pm_message_t state
)
174 struct drm_connector
*connector
;
176 drm_modeset_lock_all(dev
);
177 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
178 int old_dpms
= connector
->dpms
;
180 if (connector
->funcs
->dpms
)
181 connector
->funcs
->dpms(connector
, DRM_MODE_DPMS_OFF
);
183 /* Set the old mode back to the connector for resume */
184 connector
->dpms
= old_dpms
;
186 drm_modeset_unlock_all(dev
);
191 static int exynos_drm_resume(struct drm_device
*dev
)
193 struct drm_connector
*connector
;
195 drm_modeset_lock_all(dev
);
196 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
197 if (connector
->funcs
->dpms
) {
198 int dpms
= connector
->dpms
;
200 connector
->dpms
= DRM_MODE_DPMS_OFF
;
201 connector
->funcs
->dpms(connector
, dpms
);
204 drm_modeset_unlock_all(dev
);
209 static int exynos_drm_open(struct drm_device
*dev
, struct drm_file
*file
)
211 struct drm_exynos_file_private
*file_priv
;
214 file_priv
= kzalloc(sizeof(*file_priv
), GFP_KERNEL
);
218 file
->driver_priv
= file_priv
;
220 ret
= exynos_drm_subdrv_open(dev
, file
);
222 goto err_file_priv_free
;
228 file
->driver_priv
= NULL
;
232 static void exynos_drm_preclose(struct drm_device
*dev
,
233 struct drm_file
*file
)
235 exynos_drm_subdrv_close(dev
, file
);
238 static void exynos_drm_postclose(struct drm_device
*dev
, struct drm_file
*file
)
240 struct exynos_drm_private
*private = dev
->dev_private
;
241 struct drm_pending_vblank_event
*v
, *vt
;
242 struct drm_pending_event
*e
, *et
;
245 if (!file
->driver_priv
)
248 /* Release all events not unhandled by page flip handler. */
249 spin_lock_irqsave(&dev
->event_lock
, flags
);
250 list_for_each_entry_safe(v
, vt
, &private->pageflip_event_list
,
252 if (v
->base
.file_priv
== file
) {
253 list_del(&v
->base
.link
);
254 drm_vblank_put(dev
, v
->pipe
);
255 v
->base
.destroy(&v
->base
);
259 /* Release all events handled by page flip handler but not freed. */
260 list_for_each_entry_safe(e
, et
, &file
->event_list
, link
) {
264 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
266 kfree(file
->driver_priv
);
267 file
->driver_priv
= NULL
;
270 static void exynos_drm_lastclose(struct drm_device
*dev
)
272 exynos_drm_fbdev_restore_mode(dev
);
275 static const struct vm_operations_struct exynos_drm_gem_vm_ops
= {
276 .fault
= exynos_drm_gem_fault
,
277 .open
= drm_gem_vm_open
,
278 .close
= drm_gem_vm_close
,
281 static const struct drm_ioctl_desc exynos_ioctls
[] = {
282 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE
, exynos_drm_gem_create_ioctl
,
283 DRM_UNLOCKED
| DRM_AUTH
),
284 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET
,
285 exynos_drm_gem_get_ioctl
, DRM_UNLOCKED
),
286 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION
,
287 vidi_connection_ioctl
, DRM_UNLOCKED
| DRM_AUTH
),
288 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER
,
289 exynos_g2d_get_ver_ioctl
, DRM_UNLOCKED
| DRM_AUTH
),
290 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST
,
291 exynos_g2d_set_cmdlist_ioctl
, DRM_UNLOCKED
| DRM_AUTH
),
292 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC
,
293 exynos_g2d_exec_ioctl
, DRM_UNLOCKED
| DRM_AUTH
),
294 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY
,
295 exynos_drm_ipp_get_property
, DRM_UNLOCKED
| DRM_AUTH
),
296 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY
,
297 exynos_drm_ipp_set_property
, DRM_UNLOCKED
| DRM_AUTH
),
298 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF
,
299 exynos_drm_ipp_queue_buf
, DRM_UNLOCKED
| DRM_AUTH
),
300 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL
,
301 exynos_drm_ipp_cmd_ctrl
, DRM_UNLOCKED
| DRM_AUTH
),
304 static const struct file_operations exynos_drm_driver_fops
= {
305 .owner
= THIS_MODULE
,
307 .mmap
= exynos_drm_gem_mmap
,
310 .unlocked_ioctl
= drm_ioctl
,
312 .compat_ioctl
= drm_compat_ioctl
,
314 .release
= drm_release
,
317 static struct drm_driver exynos_drm_driver
= {
318 .driver_features
= DRIVER_MODESET
| DRIVER_GEM
| DRIVER_PRIME
,
319 .load
= exynos_drm_load
,
320 .unload
= exynos_drm_unload
,
321 .suspend
= exynos_drm_suspend
,
322 .resume
= exynos_drm_resume
,
323 .open
= exynos_drm_open
,
324 .preclose
= exynos_drm_preclose
,
325 .lastclose
= exynos_drm_lastclose
,
326 .postclose
= exynos_drm_postclose
,
327 .set_busid
= drm_platform_set_busid
,
328 .get_vblank_counter
= drm_vblank_count
,
329 .enable_vblank
= exynos_drm_crtc_enable_vblank
,
330 .disable_vblank
= exynos_drm_crtc_disable_vblank
,
331 .gem_free_object
= exynos_drm_gem_free_object
,
332 .gem_vm_ops
= &exynos_drm_gem_vm_ops
,
333 .dumb_create
= exynos_drm_gem_dumb_create
,
334 .dumb_map_offset
= exynos_drm_gem_dumb_map_offset
,
335 .dumb_destroy
= drm_gem_dumb_destroy
,
336 .prime_handle_to_fd
= drm_gem_prime_handle_to_fd
,
337 .prime_fd_to_handle
= drm_gem_prime_fd_to_handle
,
338 .gem_prime_export
= exynos_dmabuf_prime_export
,
339 .gem_prime_import
= exynos_dmabuf_prime_import
,
340 .ioctls
= exynos_ioctls
,
341 .num_ioctls
= ARRAY_SIZE(exynos_ioctls
),
342 .fops
= &exynos_drm_driver_fops
,
346 .major
= DRIVER_MAJOR
,
347 .minor
= DRIVER_MINOR
,
350 #ifdef CONFIG_PM_SLEEP
351 static int exynos_drm_sys_suspend(struct device
*dev
)
353 struct drm_device
*drm_dev
= dev_get_drvdata(dev
);
354 pm_message_t message
;
356 if (pm_runtime_suspended(dev
) || !drm_dev
)
359 message
.event
= PM_EVENT_SUSPEND
;
360 return exynos_drm_suspend(drm_dev
, message
);
363 static int exynos_drm_sys_resume(struct device
*dev
)
365 struct drm_device
*drm_dev
= dev_get_drvdata(dev
);
367 if (pm_runtime_suspended(dev
) || !drm_dev
)
370 return exynos_drm_resume(drm_dev
);
374 static const struct dev_pm_ops exynos_drm_pm_ops
= {
375 SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_sys_suspend
, exynos_drm_sys_resume
)
378 int exynos_drm_component_add(struct device
*dev
,
379 enum exynos_drm_device_type dev_type
,
380 enum exynos_drm_output_type out_type
)
382 struct component_dev
*cdev
;
384 if (dev_type
!= EXYNOS_DEVICE_TYPE_CRTC
&&
385 dev_type
!= EXYNOS_DEVICE_TYPE_CONNECTOR
) {
386 DRM_ERROR("invalid device type.\n");
390 mutex_lock(&drm_component_lock
);
393 * Make sure to check if there is a component which has two device
394 * objects, for connector and for encoder/connector.
395 * It should make sure that crtc and encoder/connector drivers are
396 * ready before exynos drm core binds them.
398 list_for_each_entry(cdev
, &drm_component_list
, list
) {
399 if (cdev
->out_type
== out_type
) {
401 * If crtc and encoder/connector device objects are
402 * added already just return.
404 if (cdev
->dev_type_flag
== (EXYNOS_DEVICE_TYPE_CRTC
|
405 EXYNOS_DEVICE_TYPE_CONNECTOR
)) {
406 mutex_unlock(&drm_component_lock
);
410 if (dev_type
== EXYNOS_DEVICE_TYPE_CRTC
) {
411 cdev
->crtc_dev
= dev
;
412 cdev
->dev_type_flag
|= dev_type
;
415 if (dev_type
== EXYNOS_DEVICE_TYPE_CONNECTOR
) {
416 cdev
->conn_dev
= dev
;
417 cdev
->dev_type_flag
|= dev_type
;
420 mutex_unlock(&drm_component_lock
);
425 mutex_unlock(&drm_component_lock
);
427 cdev
= kzalloc(sizeof(*cdev
), GFP_KERNEL
);
431 if (dev_type
== EXYNOS_DEVICE_TYPE_CRTC
)
432 cdev
->crtc_dev
= dev
;
433 if (dev_type
== EXYNOS_DEVICE_TYPE_CONNECTOR
)
434 cdev
->conn_dev
= dev
;
436 cdev
->out_type
= out_type
;
437 cdev
->dev_type_flag
= dev_type
;
439 mutex_lock(&drm_component_lock
);
440 list_add_tail(&cdev
->list
, &drm_component_list
);
441 mutex_unlock(&drm_component_lock
);
446 void exynos_drm_component_del(struct device
*dev
,
447 enum exynos_drm_device_type dev_type
)
449 struct component_dev
*cdev
, *next
;
451 mutex_lock(&drm_component_lock
);
453 list_for_each_entry_safe(cdev
, next
, &drm_component_list
, list
) {
454 if (dev_type
== EXYNOS_DEVICE_TYPE_CRTC
) {
455 if (cdev
->crtc_dev
== dev
) {
456 cdev
->crtc_dev
= NULL
;
457 cdev
->dev_type_flag
&= ~dev_type
;
461 if (dev_type
== EXYNOS_DEVICE_TYPE_CONNECTOR
) {
462 if (cdev
->conn_dev
== dev
) {
463 cdev
->conn_dev
= NULL
;
464 cdev
->dev_type_flag
&= ~dev_type
;
469 * Release cdev object only in case that both of crtc and
470 * encoder/connector device objects are NULL.
472 if (!cdev
->crtc_dev
&& !cdev
->conn_dev
) {
473 list_del(&cdev
->list
);
478 mutex_unlock(&drm_component_lock
);
481 static int compare_dev(struct device
*dev
, void *data
)
483 return dev
== (struct device
*)data
;
486 static struct component_match
*exynos_drm_match_add(struct device
*dev
)
488 struct component_match
*match
= NULL
;
489 struct component_dev
*cdev
;
490 unsigned int attach_cnt
= 0;
492 mutex_lock(&drm_component_lock
);
494 /* Do not retry to probe if there is no any kms driver regitered. */
495 if (list_empty(&drm_component_list
)) {
496 mutex_unlock(&drm_component_lock
);
497 return ERR_PTR(-ENODEV
);
500 list_for_each_entry(cdev
, &drm_component_list
, list
) {
502 * Add components to master only in case that crtc and
503 * encoder/connector device objects exist.
505 if (!cdev
->crtc_dev
|| !cdev
->conn_dev
)
510 mutex_unlock(&drm_component_lock
);
513 * fimd and dpi modules have same device object so add
514 * only crtc device object in this case.
516 if (cdev
->crtc_dev
== cdev
->conn_dev
) {
517 component_match_add(dev
, &match
, compare_dev
,
523 * Do not chage below call order.
524 * crtc device first should be added to master because
525 * connector/encoder need pipe number of crtc when they
528 component_match_add(dev
, &match
, compare_dev
, cdev
->crtc_dev
);
529 component_match_add(dev
, &match
, compare_dev
, cdev
->conn_dev
);
532 mutex_lock(&drm_component_lock
);
535 mutex_unlock(&drm_component_lock
);
537 return attach_cnt
? match
: ERR_PTR(-EPROBE_DEFER
);
540 static int exynos_drm_bind(struct device
*dev
)
542 return drm_platform_init(&exynos_drm_driver
, to_platform_device(dev
));
545 static void exynos_drm_unbind(struct device
*dev
)
547 drm_put_dev(dev_get_drvdata(dev
));
550 static const struct component_master_ops exynos_drm_ops
= {
551 .bind
= exynos_drm_bind
,
552 .unbind
= exynos_drm_unbind
,
555 static struct platform_driver
*const exynos_drm_kms_drivers
[] = {
556 #ifdef CONFIG_DRM_EXYNOS_FIMD
559 #ifdef CONFIG_DRM_EXYNOS_DP
562 #ifdef CONFIG_DRM_EXYNOS_DSI
565 #ifdef CONFIG_DRM_EXYNOS_HDMI
571 static struct platform_driver
*const exynos_drm_non_kms_drivers
[] = {
572 #ifdef CONFIG_DRM_EXYNOS_G2D
575 #ifdef CONFIG_DRM_EXYNOS_FIMC
578 #ifdef CONFIG_DRM_EXYNOS_ROTATOR
581 #ifdef CONFIG_DRM_EXYNOS_GSC
584 #ifdef CONFIG_DRM_EXYNOS_IPP
589 static int exynos_drm_platform_probe(struct platform_device
*pdev
)
591 struct component_match
*match
;
593 pdev
->dev
.coherent_dma_mask
= DMA_BIT_MASK(32);
594 exynos_drm_driver
.num_ioctls
= ARRAY_SIZE(exynos_ioctls
);
596 match
= exynos_drm_match_add(&pdev
->dev
);
598 return PTR_ERR(match
);
601 return component_master_add_with_match(&pdev
->dev
, &exynos_drm_ops
,
605 static int exynos_drm_platform_remove(struct platform_device
*pdev
)
607 component_master_del(&pdev
->dev
, &exynos_drm_ops
);
611 static const char * const strings
[] = {
617 static struct platform_driver exynos_drm_platform_driver
= {
618 .probe
= exynos_drm_platform_probe
,
619 .remove
= exynos_drm_platform_remove
,
621 .name
= "exynos-drm",
622 .pm
= &exynos_drm_pm_ops
,
626 static int exynos_drm_init(void)
628 bool is_exynos
= false;
632 * Register device object only in case of Exynos SoC.
634 * Below codes resolves temporarily infinite loop issue incurred
635 * by Exynos drm driver when using multi-platform kernel.
636 * So these codes will be replaced with more generic way later.
638 for (i
= 0; i
< ARRAY_SIZE(strings
); i
++) {
639 if (of_machine_is_compatible(strings
[i
])) {
649 * Register device object only in case of Exynos SoC.
651 * Below codes resolves temporarily infinite loop issue incurred
652 * by Exynos drm driver when using multi-platform kernel.
653 * So these codes will be replaced with more generic way later.
655 if (!of_machine_is_compatible("samsung,exynos3") &&
656 !of_machine_is_compatible("samsung,exynos4") &&
657 !of_machine_is_compatible("samsung,exynos5"))
660 exynos_drm_pdev
= platform_device_register_simple("exynos-drm", -1,
662 if (IS_ERR(exynos_drm_pdev
))
663 return PTR_ERR(exynos_drm_pdev
);
665 ret
= exynos_drm_probe_vidi();
667 goto err_unregister_pd
;
669 for (i
= 0; i
< ARRAY_SIZE(exynos_drm_kms_drivers
); ++i
) {
670 ret
= platform_driver_register(exynos_drm_kms_drivers
[i
]);
672 goto err_unregister_kms_drivers
;
675 for (j
= 0; j
< ARRAY_SIZE(exynos_drm_non_kms_drivers
); ++j
) {
676 ret
= platform_driver_register(exynos_drm_non_kms_drivers
[j
]);
678 goto err_unregister_non_kms_drivers
;
681 #ifdef CONFIG_DRM_EXYNOS_IPP
682 ret
= exynos_platform_device_ipp_register();
684 goto err_unregister_non_kms_drivers
;
687 ret
= platform_driver_register(&exynos_drm_platform_driver
);
689 goto err_unregister_resources
;
693 err_unregister_resources
:
694 #ifdef CONFIG_DRM_EXYNOS_IPP
695 exynos_platform_device_ipp_unregister();
698 err_unregister_non_kms_drivers
:
700 platform_driver_unregister(exynos_drm_non_kms_drivers
[j
]);
702 err_unregister_kms_drivers
:
704 platform_driver_unregister(exynos_drm_kms_drivers
[i
]);
706 exynos_drm_remove_vidi();
709 platform_device_unregister(exynos_drm_pdev
);
714 static void exynos_drm_exit(void)
718 #ifdef CONFIG_DRM_EXYNOS_IPP
719 exynos_platform_device_ipp_unregister();
722 for (i
= ARRAY_SIZE(exynos_drm_non_kms_drivers
) - 1; i
>= 0; --i
)
723 platform_driver_unregister(exynos_drm_non_kms_drivers
[i
]);
725 for (i
= ARRAY_SIZE(exynos_drm_kms_drivers
) - 1; i
>= 0; --i
)
726 platform_driver_unregister(exynos_drm_kms_drivers
[i
]);
728 platform_driver_unregister(&exynos_drm_platform_driver
);
730 exynos_drm_remove_vidi();
732 platform_device_unregister(exynos_drm_pdev
);
735 module_init(exynos_drm_init
);
736 module_exit(exynos_drm_exit
);
738 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
739 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
740 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
741 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
742 MODULE_LICENSE("GPL");