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_atomic.h>
17 #include <drm/drm_atomic_helper.h>
18 #include <drm/drm_crtc_helper.h>
20 #include <linux/component.h>
22 #include <drm/exynos_drm.h>
24 #include "exynos_drm_drv.h"
25 #include "exynos_drm_crtc.h"
26 #include "exynos_drm_fbdev.h"
27 #include "exynos_drm_fb.h"
28 #include "exynos_drm_gem.h"
29 #include "exynos_drm_plane.h"
30 #include "exynos_drm_vidi.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 struct exynos_atomic_commit
{
42 struct work_struct work
;
43 struct drm_device
*dev
;
44 struct drm_atomic_state
*state
;
48 static void exynos_atomic_wait_for_commit(struct drm_atomic_state
*state
)
50 struct drm_crtc_state
*crtc_state
;
51 struct drm_crtc
*crtc
;
54 for_each_crtc_in_state(state
, crtc
, crtc_state
, i
) {
55 struct exynos_drm_crtc
*exynos_crtc
= to_exynos_crtc(crtc
);
57 if (!crtc
->state
->enable
)
60 ret
= drm_crtc_vblank_get(crtc
);
64 exynos_drm_crtc_wait_pending_update(exynos_crtc
);
65 drm_crtc_vblank_put(crtc
);
69 static void exynos_atomic_commit_complete(struct exynos_atomic_commit
*commit
)
71 struct drm_device
*dev
= commit
->dev
;
72 struct exynos_drm_private
*priv
= dev
->dev_private
;
73 struct drm_atomic_state
*state
= commit
->state
;
74 struct drm_plane
*plane
;
75 struct drm_crtc
*crtc
;
76 struct drm_plane_state
*plane_state
;
77 struct drm_crtc_state
*crtc_state
;
80 drm_atomic_helper_commit_modeset_disables(dev
, state
);
82 drm_atomic_helper_commit_modeset_enables(dev
, state
);
85 * Exynos can't update planes with CRTCs and encoders disabled,
86 * its updates routines, specially for FIMD, requires the clocks
87 * to be enabled. So it is necessary to handle the modeset operations
88 * *before* the commit_planes() step, this way it will always
89 * have the relevant clocks enabled to perform the update.
92 for_each_crtc_in_state(state
, crtc
, crtc_state
, i
) {
93 struct exynos_drm_crtc
*exynos_crtc
= to_exynos_crtc(crtc
);
95 atomic_set(&exynos_crtc
->pending_update
, 0);
98 for_each_plane_in_state(state
, plane
, plane_state
, i
) {
99 struct exynos_drm_crtc
*exynos_crtc
=
100 to_exynos_crtc(plane
->crtc
);
105 atomic_inc(&exynos_crtc
->pending_update
);
108 drm_atomic_helper_commit_planes(dev
, state
, false);
110 exynos_atomic_wait_for_commit(state
);
112 drm_atomic_helper_cleanup_planes(dev
, state
);
114 drm_atomic_state_free(state
);
116 spin_lock(&priv
->lock
);
117 priv
->pending
&= ~commit
->crtcs
;
118 spin_unlock(&priv
->lock
);
120 wake_up_all(&priv
->wait
);
125 static void exynos_drm_atomic_work(struct work_struct
*work
)
127 struct exynos_atomic_commit
*commit
= container_of(work
,
128 struct exynos_atomic_commit
, work
);
130 exynos_atomic_commit_complete(commit
);
133 static struct device
*exynos_drm_get_dma_device(void);
135 static int exynos_drm_load(struct drm_device
*dev
, unsigned long flags
)
137 struct exynos_drm_private
*private;
138 struct drm_encoder
*encoder
;
139 unsigned int clone_mask
;
142 private = kzalloc(sizeof(struct exynos_drm_private
), GFP_KERNEL
);
146 init_waitqueue_head(&private->wait
);
147 spin_lock_init(&private->lock
);
149 dev_set_drvdata(dev
->dev
, dev
);
150 dev
->dev_private
= (void *)private;
152 /* the first real CRTC device is used for all dma mapping operations */
153 private->dma_dev
= exynos_drm_get_dma_device();
154 if (!private->dma_dev
) {
155 DRM_ERROR("no device found for DMA mapping operations.\n");
157 goto err_free_private
;
159 DRM_INFO("Exynos DRM: using %s device for DMA mapping operations\n",
160 dev_name(private->dma_dev
));
163 * create mapping to manage iommu table and set a pointer to iommu
164 * mapping structure to iommu_mapping of private data.
165 * also this iommu_mapping can be used to check if iommu is supported
168 ret
= drm_create_iommu_mapping(dev
);
170 DRM_ERROR("failed to create iommu mapping.\n");
171 goto err_free_private
;
174 drm_mode_config_init(dev
);
176 exynos_drm_mode_config_init(dev
);
178 /* setup possible_clones. */
181 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
182 clone_mask
|= (1 << (cnt
++));
184 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
185 encoder
->possible_clones
= clone_mask
;
187 platform_set_drvdata(dev
->platformdev
, dev
);
189 /* Try to bind all sub drivers. */
190 ret
= component_bind_all(dev
->dev
, dev
);
192 goto err_mode_config_cleanup
;
194 ret
= drm_vblank_init(dev
, dev
->mode_config
.num_crtc
);
198 /* Probe non kms sub drivers and virtual display driver. */
199 ret
= exynos_drm_device_subdrv_probe(dev
);
201 goto err_cleanup_vblank
;
203 drm_mode_config_reset(dev
);
206 * enable drm irq mode.
207 * - with irq_enabled = true, we can use the vblank feature.
209 * P.S. note that we wouldn't use drm irq handler but
210 * just specific driver own one instead because
211 * drm framework supports only one irq handler.
213 dev
->irq_enabled
= true;
216 * with vblank_disable_allowed = true, vblank interrupt will be disabled
217 * by drm timer once a current process gives up ownership of
218 * vblank event.(after drm_vblank_put function is called)
220 dev
->vblank_disable_allowed
= true;
222 /* init kms poll for handling hpd */
223 drm_kms_helper_poll_init(dev
);
225 /* force connectors detection */
226 drm_helper_hpd_irq_event(dev
);
231 drm_vblank_cleanup(dev
);
233 component_unbind_all(dev
->dev
, dev
);
234 err_mode_config_cleanup
:
235 drm_mode_config_cleanup(dev
);
236 drm_release_iommu_mapping(dev
);
243 static int exynos_drm_unload(struct drm_device
*dev
)
245 exynos_drm_device_subdrv_remove(dev
);
247 exynos_drm_fbdev_fini(dev
);
248 drm_kms_helper_poll_fini(dev
);
250 drm_vblank_cleanup(dev
);
251 component_unbind_all(dev
->dev
, dev
);
252 drm_mode_config_cleanup(dev
);
253 drm_release_iommu_mapping(dev
);
255 kfree(dev
->dev_private
);
256 dev
->dev_private
= NULL
;
261 static int commit_is_pending(struct exynos_drm_private
*priv
, u32 crtcs
)
265 spin_lock(&priv
->lock
);
266 pending
= priv
->pending
& crtcs
;
267 spin_unlock(&priv
->lock
);
272 int exynos_atomic_commit(struct drm_device
*dev
, struct drm_atomic_state
*state
,
275 struct exynos_drm_private
*priv
= dev
->dev_private
;
276 struct exynos_atomic_commit
*commit
;
279 commit
= kzalloc(sizeof(*commit
), GFP_KERNEL
);
283 ret
= drm_atomic_helper_prepare_planes(dev
, state
);
289 /* This is the point of no return */
291 INIT_WORK(&commit
->work
, exynos_drm_atomic_work
);
293 commit
->state
= state
;
295 /* Wait until all affected CRTCs have completed previous commits and
296 * mark them as pending.
298 for (i
= 0; i
< dev
->mode_config
.num_crtc
; ++i
) {
300 commit
->crtcs
|= 1 << drm_crtc_index(state
->crtcs
[i
]);
303 wait_event(priv
->wait
, !commit_is_pending(priv
, commit
->crtcs
));
305 spin_lock(&priv
->lock
);
306 priv
->pending
|= commit
->crtcs
;
307 spin_unlock(&priv
->lock
);
309 drm_atomic_helper_swap_state(dev
, state
);
312 schedule_work(&commit
->work
);
314 exynos_atomic_commit_complete(commit
);
319 static int exynos_drm_open(struct drm_device
*dev
, struct drm_file
*file
)
321 struct drm_exynos_file_private
*file_priv
;
324 file_priv
= kzalloc(sizeof(*file_priv
), GFP_KERNEL
);
328 file
->driver_priv
= file_priv
;
330 ret
= exynos_drm_subdrv_open(dev
, file
);
332 goto err_file_priv_free
;
338 file
->driver_priv
= NULL
;
342 static void exynos_drm_preclose(struct drm_device
*dev
,
343 struct drm_file
*file
)
345 struct drm_crtc
*crtc
;
347 exynos_drm_subdrv_close(dev
, file
);
349 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
350 exynos_drm_crtc_cancel_page_flip(crtc
, file
);
353 static void exynos_drm_postclose(struct drm_device
*dev
, struct drm_file
*file
)
355 kfree(file
->driver_priv
);
356 file
->driver_priv
= NULL
;
359 static void exynos_drm_lastclose(struct drm_device
*dev
)
361 exynos_drm_fbdev_restore_mode(dev
);
364 static const struct vm_operations_struct exynos_drm_gem_vm_ops
= {
365 .fault
= exynos_drm_gem_fault
,
366 .open
= drm_gem_vm_open
,
367 .close
= drm_gem_vm_close
,
370 static const struct drm_ioctl_desc exynos_ioctls
[] = {
371 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE
, exynos_drm_gem_create_ioctl
,
372 DRM_AUTH
| DRM_RENDER_ALLOW
),
373 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP
, exynos_drm_gem_map_ioctl
,
374 DRM_AUTH
| DRM_RENDER_ALLOW
),
375 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET
, exynos_drm_gem_get_ioctl
,
377 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION
, vidi_connection_ioctl
,
379 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER
, exynos_g2d_get_ver_ioctl
,
380 DRM_AUTH
| DRM_RENDER_ALLOW
),
381 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST
, exynos_g2d_set_cmdlist_ioctl
,
382 DRM_AUTH
| DRM_RENDER_ALLOW
),
383 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC
, exynos_g2d_exec_ioctl
,
384 DRM_AUTH
| DRM_RENDER_ALLOW
),
385 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY
, exynos_drm_ipp_get_property
,
386 DRM_AUTH
| DRM_RENDER_ALLOW
),
387 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY
, exynos_drm_ipp_set_property
,
388 DRM_AUTH
| DRM_RENDER_ALLOW
),
389 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF
, exynos_drm_ipp_queue_buf
,
390 DRM_AUTH
| DRM_RENDER_ALLOW
),
391 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL
, exynos_drm_ipp_cmd_ctrl
,
392 DRM_AUTH
| DRM_RENDER_ALLOW
),
395 static const struct file_operations exynos_drm_driver_fops
= {
396 .owner
= THIS_MODULE
,
398 .mmap
= exynos_drm_gem_mmap
,
401 .unlocked_ioctl
= drm_ioctl
,
403 .compat_ioctl
= drm_compat_ioctl
,
405 .release
= drm_release
,
408 static struct drm_driver exynos_drm_driver
= {
409 .driver_features
= DRIVER_MODESET
| DRIVER_GEM
| DRIVER_PRIME
410 | DRIVER_ATOMIC
| DRIVER_RENDER
,
411 .load
= exynos_drm_load
,
412 .unload
= exynos_drm_unload
,
413 .open
= exynos_drm_open
,
414 .preclose
= exynos_drm_preclose
,
415 .lastclose
= exynos_drm_lastclose
,
416 .postclose
= exynos_drm_postclose
,
417 .set_busid
= drm_platform_set_busid
,
418 .get_vblank_counter
= drm_vblank_no_hw_counter
,
419 .enable_vblank
= exynos_drm_crtc_enable_vblank
,
420 .disable_vblank
= exynos_drm_crtc_disable_vblank
,
421 .gem_free_object
= exynos_drm_gem_free_object
,
422 .gem_vm_ops
= &exynos_drm_gem_vm_ops
,
423 .dumb_create
= exynos_drm_gem_dumb_create
,
424 .dumb_map_offset
= exynos_drm_gem_dumb_map_offset
,
425 .dumb_destroy
= drm_gem_dumb_destroy
,
426 .prime_handle_to_fd
= drm_gem_prime_handle_to_fd
,
427 .prime_fd_to_handle
= drm_gem_prime_fd_to_handle
,
428 .gem_prime_export
= drm_gem_prime_export
,
429 .gem_prime_import
= drm_gem_prime_import
,
430 .gem_prime_get_sg_table
= exynos_drm_gem_prime_get_sg_table
,
431 .gem_prime_import_sg_table
= exynos_drm_gem_prime_import_sg_table
,
432 .gem_prime_vmap
= exynos_drm_gem_prime_vmap
,
433 .gem_prime_vunmap
= exynos_drm_gem_prime_vunmap
,
434 .ioctls
= exynos_ioctls
,
435 .num_ioctls
= ARRAY_SIZE(exynos_ioctls
),
436 .fops
= &exynos_drm_driver_fops
,
440 .major
= DRIVER_MAJOR
,
441 .minor
= DRIVER_MINOR
,
444 #ifdef CONFIG_PM_SLEEP
445 static int exynos_drm_suspend(struct device
*dev
)
447 struct drm_device
*drm_dev
= dev_get_drvdata(dev
);
448 struct drm_connector
*connector
;
450 if (pm_runtime_suspended(dev
) || !drm_dev
)
453 drm_modeset_lock_all(drm_dev
);
454 drm_for_each_connector(connector
, drm_dev
) {
455 int old_dpms
= connector
->dpms
;
457 if (connector
->funcs
->dpms
)
458 connector
->funcs
->dpms(connector
, DRM_MODE_DPMS_OFF
);
460 /* Set the old mode back to the connector for resume */
461 connector
->dpms
= old_dpms
;
463 drm_modeset_unlock_all(drm_dev
);
468 static int exynos_drm_resume(struct device
*dev
)
470 struct drm_device
*drm_dev
= dev_get_drvdata(dev
);
471 struct drm_connector
*connector
;
473 if (pm_runtime_suspended(dev
) || !drm_dev
)
476 drm_modeset_lock_all(drm_dev
);
477 drm_for_each_connector(connector
, drm_dev
) {
478 if (connector
->funcs
->dpms
) {
479 int dpms
= connector
->dpms
;
481 connector
->dpms
= DRM_MODE_DPMS_OFF
;
482 connector
->funcs
->dpms(connector
, dpms
);
485 drm_modeset_unlock_all(drm_dev
);
491 static const struct dev_pm_ops exynos_drm_pm_ops
= {
492 SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_suspend
, exynos_drm_resume
)
495 /* forward declaration */
496 static struct platform_driver exynos_drm_platform_driver
;
498 struct exynos_drm_driver_info
{
499 struct platform_driver
*driver
;
503 #define DRM_COMPONENT_DRIVER BIT(0) /* supports component framework */
504 #define DRM_VIRTUAL_DEVICE BIT(1) /* create virtual platform device */
505 #define DRM_DMA_DEVICE BIT(2) /* can be used for dma allocations */
507 #define DRV_PTR(drv, cond) (IS_ENABLED(cond) ? &drv : NULL)
510 * Connector drivers should not be placed before associated crtc drivers,
511 * because connector requires pipe number of its crtc during initialization.
513 static struct exynos_drm_driver_info exynos_drm_drivers
[] = {
515 DRV_PTR(fimd_driver
, CONFIG_DRM_EXYNOS_FIMD
),
516 DRM_COMPONENT_DRIVER
| DRM_DMA_DEVICE
518 DRV_PTR(exynos5433_decon_driver
, CONFIG_DRM_EXYNOS5433_DECON
),
519 DRM_COMPONENT_DRIVER
| DRM_DMA_DEVICE
521 DRV_PTR(decon_driver
, CONFIG_DRM_EXYNOS7_DECON
),
522 DRM_COMPONENT_DRIVER
| DRM_DMA_DEVICE
524 DRV_PTR(mixer_driver
, CONFIG_DRM_EXYNOS_MIXER
),
525 DRM_COMPONENT_DRIVER
| DRM_DMA_DEVICE
527 DRV_PTR(mic_driver
, CONFIG_DRM_EXYNOS_MIC
),
530 DRV_PTR(dp_driver
, CONFIG_DRM_EXYNOS_DP
),
533 DRV_PTR(dsi_driver
, CONFIG_DRM_EXYNOS_DSI
),
536 DRV_PTR(hdmi_driver
, CONFIG_DRM_EXYNOS_HDMI
),
539 DRV_PTR(vidi_driver
, CONFIG_DRM_EXYNOS_VIDI
),
540 DRM_COMPONENT_DRIVER
| DRM_VIRTUAL_DEVICE
542 DRV_PTR(g2d_driver
, CONFIG_DRM_EXYNOS_G2D
),
544 DRV_PTR(fimc_driver
, CONFIG_DRM_EXYNOS_FIMC
),
546 DRV_PTR(rotator_driver
, CONFIG_DRM_EXYNOS_ROTATOR
),
548 DRV_PTR(gsc_driver
, CONFIG_DRM_EXYNOS_GSC
),
550 DRV_PTR(ipp_driver
, CONFIG_DRM_EXYNOS_IPP
),
553 &exynos_drm_platform_driver
,
558 static int compare_dev(struct device
*dev
, void *data
)
560 return dev
== (struct device
*)data
;
563 static struct component_match
*exynos_drm_match_add(struct device
*dev
)
565 struct component_match
*match
= NULL
;
568 for (i
= 0; i
< ARRAY_SIZE(exynos_drm_drivers
); ++i
) {
569 struct exynos_drm_driver_info
*info
= &exynos_drm_drivers
[i
];
570 struct device
*p
= NULL
, *d
;
572 if (!info
->driver
|| !(info
->flags
& DRM_COMPONENT_DRIVER
))
575 while ((d
= bus_find_device(&platform_bus_type
, p
,
576 &info
->driver
->driver
,
577 (void *)platform_bus_type
.match
))) {
579 component_match_add(dev
, &match
, compare_dev
, d
);
585 return match
?: ERR_PTR(-ENODEV
);
588 static int exynos_drm_bind(struct device
*dev
)
590 return drm_platform_init(&exynos_drm_driver
, to_platform_device(dev
));
593 static void exynos_drm_unbind(struct device
*dev
)
595 drm_put_dev(dev_get_drvdata(dev
));
598 static const struct component_master_ops exynos_drm_ops
= {
599 .bind
= exynos_drm_bind
,
600 .unbind
= exynos_drm_unbind
,
603 static int exynos_drm_platform_probe(struct platform_device
*pdev
)
605 struct component_match
*match
;
607 pdev
->dev
.coherent_dma_mask
= DMA_BIT_MASK(32);
608 exynos_drm_driver
.num_ioctls
= ARRAY_SIZE(exynos_ioctls
);
610 match
= exynos_drm_match_add(&pdev
->dev
);
612 return PTR_ERR(match
);
614 return component_master_add_with_match(&pdev
->dev
, &exynos_drm_ops
,
618 static int exynos_drm_platform_remove(struct platform_device
*pdev
)
620 component_master_del(&pdev
->dev
, &exynos_drm_ops
);
624 static struct platform_driver exynos_drm_platform_driver
= {
625 .probe
= exynos_drm_platform_probe
,
626 .remove
= exynos_drm_platform_remove
,
628 .name
= "exynos-drm",
629 .pm
= &exynos_drm_pm_ops
,
633 static struct device
*exynos_drm_get_dma_device(void)
637 for (i
= 0; i
< ARRAY_SIZE(exynos_drm_drivers
); ++i
) {
638 struct exynos_drm_driver_info
*info
= &exynos_drm_drivers
[i
];
641 if (!info
->driver
|| !(info
->flags
& DRM_DMA_DEVICE
))
644 while ((dev
= bus_find_device(&platform_bus_type
, NULL
,
645 &info
->driver
->driver
,
646 (void *)platform_bus_type
.match
))) {
654 static void exynos_drm_unregister_devices(void)
658 for (i
= ARRAY_SIZE(exynos_drm_drivers
) - 1; i
>= 0; --i
) {
659 struct exynos_drm_driver_info
*info
= &exynos_drm_drivers
[i
];
662 if (!info
->driver
|| !(info
->flags
& DRM_VIRTUAL_DEVICE
))
665 while ((dev
= bus_find_device(&platform_bus_type
, NULL
,
666 &info
->driver
->driver
,
667 (void *)platform_bus_type
.match
))) {
669 platform_device_unregister(to_platform_device(dev
));
674 static int exynos_drm_register_devices(void)
676 struct platform_device
*pdev
;
679 for (i
= 0; i
< ARRAY_SIZE(exynos_drm_drivers
); ++i
) {
680 struct exynos_drm_driver_info
*info
= &exynos_drm_drivers
[i
];
682 if (!info
->driver
|| !(info
->flags
& DRM_VIRTUAL_DEVICE
))
685 pdev
= platform_device_register_simple(
686 info
->driver
->driver
.name
, -1, NULL
, 0);
693 exynos_drm_unregister_devices();
694 return PTR_ERR(pdev
);
697 static void exynos_drm_unregister_drivers(void)
701 for (i
= ARRAY_SIZE(exynos_drm_drivers
) - 1; i
>= 0; --i
) {
702 struct exynos_drm_driver_info
*info
= &exynos_drm_drivers
[i
];
707 platform_driver_unregister(info
->driver
);
711 static int exynos_drm_register_drivers(void)
715 for (i
= 0; i
< ARRAY_SIZE(exynos_drm_drivers
); ++i
) {
716 struct exynos_drm_driver_info
*info
= &exynos_drm_drivers
[i
];
721 ret
= platform_driver_register(info
->driver
);
727 exynos_drm_unregister_drivers();
731 static int exynos_drm_init(void)
735 ret
= exynos_drm_register_devices();
739 ret
= exynos_drm_register_drivers();
741 goto err_unregister_pdevs
;
745 err_unregister_pdevs
:
746 exynos_drm_unregister_devices();
751 static void exynos_drm_exit(void)
753 exynos_drm_unregister_drivers();
754 exynos_drm_unregister_devices();
757 module_init(exynos_drm_init
);
758 module_exit(exynos_drm_exit
);
760 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
761 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
762 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
763 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
764 MODULE_LICENSE("GPL");