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
));
162 /* create common IOMMU mapping for all devices attached to Exynos DRM */
163 ret
= drm_create_iommu_mapping(dev
);
165 DRM_ERROR("failed to create iommu mapping.\n");
166 goto err_free_private
;
169 drm_mode_config_init(dev
);
171 exynos_drm_mode_config_init(dev
);
173 /* setup possible_clones. */
176 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
177 clone_mask
|= (1 << (cnt
++));
179 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
)
180 encoder
->possible_clones
= clone_mask
;
182 platform_set_drvdata(dev
->platformdev
, dev
);
184 /* Try to bind all sub drivers. */
185 ret
= component_bind_all(dev
->dev
, dev
);
187 goto err_mode_config_cleanup
;
189 ret
= drm_vblank_init(dev
, dev
->mode_config
.num_crtc
);
193 /* Probe non kms sub drivers and virtual display driver. */
194 ret
= exynos_drm_device_subdrv_probe(dev
);
196 goto err_cleanup_vblank
;
198 drm_mode_config_reset(dev
);
201 * enable drm irq mode.
202 * - with irq_enabled = true, we can use the vblank feature.
204 * P.S. note that we wouldn't use drm irq handler but
205 * just specific driver own one instead because
206 * drm framework supports only one irq handler.
208 dev
->irq_enabled
= true;
210 /* init kms poll for handling hpd */
211 drm_kms_helper_poll_init(dev
);
213 /* force connectors detection */
214 drm_helper_hpd_irq_event(dev
);
219 drm_vblank_cleanup(dev
);
221 component_unbind_all(dev
->dev
, dev
);
222 err_mode_config_cleanup
:
223 drm_mode_config_cleanup(dev
);
224 drm_release_iommu_mapping(dev
);
231 static int exynos_drm_unload(struct drm_device
*dev
)
233 exynos_drm_device_subdrv_remove(dev
);
235 exynos_drm_fbdev_fini(dev
);
236 drm_kms_helper_poll_fini(dev
);
238 drm_vblank_cleanup(dev
);
239 component_unbind_all(dev
->dev
, dev
);
240 drm_mode_config_cleanup(dev
);
241 drm_release_iommu_mapping(dev
);
243 kfree(dev
->dev_private
);
244 dev
->dev_private
= NULL
;
249 static int commit_is_pending(struct exynos_drm_private
*priv
, u32 crtcs
)
253 spin_lock(&priv
->lock
);
254 pending
= priv
->pending
& crtcs
;
255 spin_unlock(&priv
->lock
);
260 int exynos_atomic_commit(struct drm_device
*dev
, struct drm_atomic_state
*state
,
263 struct exynos_drm_private
*priv
= dev
->dev_private
;
264 struct exynos_atomic_commit
*commit
;
265 struct drm_crtc
*crtc
;
266 struct drm_crtc_state
*crtc_state
;
269 commit
= kzalloc(sizeof(*commit
), GFP_KERNEL
);
273 ret
= drm_atomic_helper_prepare_planes(dev
, state
);
279 /* This is the point of no return */
281 INIT_WORK(&commit
->work
, exynos_drm_atomic_work
);
283 commit
->state
= state
;
285 /* Wait until all affected CRTCs have completed previous commits and
286 * mark them as pending.
288 for_each_crtc_in_state(state
, crtc
, crtc_state
, i
)
289 commit
->crtcs
|= drm_crtc_mask(crtc
);
291 wait_event(priv
->wait
, !commit_is_pending(priv
, commit
->crtcs
));
293 spin_lock(&priv
->lock
);
294 priv
->pending
|= commit
->crtcs
;
295 spin_unlock(&priv
->lock
);
297 drm_atomic_helper_swap_state(state
, true);
300 schedule_work(&commit
->work
);
302 exynos_atomic_commit_complete(commit
);
307 static int exynos_drm_open(struct drm_device
*dev
, struct drm_file
*file
)
309 struct drm_exynos_file_private
*file_priv
;
312 file_priv
= kzalloc(sizeof(*file_priv
), GFP_KERNEL
);
316 file
->driver_priv
= file_priv
;
318 ret
= exynos_drm_subdrv_open(dev
, file
);
320 goto err_file_priv_free
;
326 file
->driver_priv
= NULL
;
330 static void exynos_drm_preclose(struct drm_device
*dev
,
331 struct drm_file
*file
)
333 struct drm_crtc
*crtc
;
335 exynos_drm_subdrv_close(dev
, file
);
337 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
338 exynos_drm_crtc_cancel_page_flip(crtc
, file
);
341 static void exynos_drm_postclose(struct drm_device
*dev
, struct drm_file
*file
)
343 kfree(file
->driver_priv
);
344 file
->driver_priv
= NULL
;
347 static void exynos_drm_lastclose(struct drm_device
*dev
)
349 exynos_drm_fbdev_restore_mode(dev
);
352 static const struct vm_operations_struct exynos_drm_gem_vm_ops
= {
353 .fault
= exynos_drm_gem_fault
,
354 .open
= drm_gem_vm_open
,
355 .close
= drm_gem_vm_close
,
358 static const struct drm_ioctl_desc exynos_ioctls
[] = {
359 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE
, exynos_drm_gem_create_ioctl
,
360 DRM_AUTH
| DRM_RENDER_ALLOW
),
361 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP
, exynos_drm_gem_map_ioctl
,
362 DRM_AUTH
| DRM_RENDER_ALLOW
),
363 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET
, exynos_drm_gem_get_ioctl
,
365 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION
, vidi_connection_ioctl
,
367 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER
, exynos_g2d_get_ver_ioctl
,
368 DRM_AUTH
| DRM_RENDER_ALLOW
),
369 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST
, exynos_g2d_set_cmdlist_ioctl
,
370 DRM_AUTH
| DRM_RENDER_ALLOW
),
371 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC
, exynos_g2d_exec_ioctl
,
372 DRM_AUTH
| DRM_RENDER_ALLOW
),
373 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY
, exynos_drm_ipp_get_property
,
374 DRM_AUTH
| DRM_RENDER_ALLOW
),
375 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY
, exynos_drm_ipp_set_property
,
376 DRM_AUTH
| DRM_RENDER_ALLOW
),
377 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF
, exynos_drm_ipp_queue_buf
,
378 DRM_AUTH
| DRM_RENDER_ALLOW
),
379 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL
, exynos_drm_ipp_cmd_ctrl
,
380 DRM_AUTH
| DRM_RENDER_ALLOW
),
383 static const struct file_operations exynos_drm_driver_fops
= {
384 .owner
= THIS_MODULE
,
386 .mmap
= exynos_drm_gem_mmap
,
389 .unlocked_ioctl
= drm_ioctl
,
391 .compat_ioctl
= drm_compat_ioctl
,
393 .release
= drm_release
,
396 static struct drm_driver exynos_drm_driver
= {
397 .driver_features
= DRIVER_MODESET
| DRIVER_GEM
| DRIVER_PRIME
398 | DRIVER_ATOMIC
| DRIVER_RENDER
,
399 .load
= exynos_drm_load
,
400 .unload
= exynos_drm_unload
,
401 .open
= exynos_drm_open
,
402 .preclose
= exynos_drm_preclose
,
403 .lastclose
= exynos_drm_lastclose
,
404 .postclose
= exynos_drm_postclose
,
405 .get_vblank_counter
= drm_vblank_no_hw_counter
,
406 .enable_vblank
= exynos_drm_crtc_enable_vblank
,
407 .disable_vblank
= exynos_drm_crtc_disable_vblank
,
408 .gem_free_object_unlocked
= exynos_drm_gem_free_object
,
409 .gem_vm_ops
= &exynos_drm_gem_vm_ops
,
410 .dumb_create
= exynos_drm_gem_dumb_create
,
411 .dumb_map_offset
= exynos_drm_gem_dumb_map_offset
,
412 .dumb_destroy
= drm_gem_dumb_destroy
,
413 .prime_handle_to_fd
= drm_gem_prime_handle_to_fd
,
414 .prime_fd_to_handle
= drm_gem_prime_fd_to_handle
,
415 .gem_prime_export
= drm_gem_prime_export
,
416 .gem_prime_import
= drm_gem_prime_import
,
417 .gem_prime_get_sg_table
= exynos_drm_gem_prime_get_sg_table
,
418 .gem_prime_import_sg_table
= exynos_drm_gem_prime_import_sg_table
,
419 .gem_prime_vmap
= exynos_drm_gem_prime_vmap
,
420 .gem_prime_vunmap
= exynos_drm_gem_prime_vunmap
,
421 .gem_prime_mmap
= exynos_drm_gem_prime_mmap
,
422 .ioctls
= exynos_ioctls
,
423 .num_ioctls
= ARRAY_SIZE(exynos_ioctls
),
424 .fops
= &exynos_drm_driver_fops
,
428 .major
= DRIVER_MAJOR
,
429 .minor
= DRIVER_MINOR
,
432 #ifdef CONFIG_PM_SLEEP
433 static int exynos_drm_suspend(struct device
*dev
)
435 struct drm_device
*drm_dev
= dev_get_drvdata(dev
);
436 struct drm_connector
*connector
;
438 if (pm_runtime_suspended(dev
) || !drm_dev
)
441 drm_modeset_lock_all(drm_dev
);
442 drm_for_each_connector(connector
, drm_dev
) {
443 int old_dpms
= connector
->dpms
;
445 if (connector
->funcs
->dpms
)
446 connector
->funcs
->dpms(connector
, DRM_MODE_DPMS_OFF
);
448 /* Set the old mode back to the connector for resume */
449 connector
->dpms
= old_dpms
;
451 drm_modeset_unlock_all(drm_dev
);
456 static int exynos_drm_resume(struct device
*dev
)
458 struct drm_device
*drm_dev
= dev_get_drvdata(dev
);
459 struct drm_connector
*connector
;
461 if (pm_runtime_suspended(dev
) || !drm_dev
)
464 drm_modeset_lock_all(drm_dev
);
465 drm_for_each_connector(connector
, drm_dev
) {
466 if (connector
->funcs
->dpms
) {
467 int dpms
= connector
->dpms
;
469 connector
->dpms
= DRM_MODE_DPMS_OFF
;
470 connector
->funcs
->dpms(connector
, dpms
);
473 drm_modeset_unlock_all(drm_dev
);
479 static const struct dev_pm_ops exynos_drm_pm_ops
= {
480 SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_suspend
, exynos_drm_resume
)
483 /* forward declaration */
484 static struct platform_driver exynos_drm_platform_driver
;
486 struct exynos_drm_driver_info
{
487 struct platform_driver
*driver
;
491 #define DRM_COMPONENT_DRIVER BIT(0) /* supports component framework */
492 #define DRM_VIRTUAL_DEVICE BIT(1) /* create virtual platform device */
493 #define DRM_DMA_DEVICE BIT(2) /* can be used for dma allocations */
495 #define DRV_PTR(drv, cond) (IS_ENABLED(cond) ? &drv : NULL)
498 * Connector drivers should not be placed before associated crtc drivers,
499 * because connector requires pipe number of its crtc during initialization.
501 static struct exynos_drm_driver_info exynos_drm_drivers
[] = {
503 DRV_PTR(fimd_driver
, CONFIG_DRM_EXYNOS_FIMD
),
504 DRM_COMPONENT_DRIVER
| DRM_DMA_DEVICE
506 DRV_PTR(exynos5433_decon_driver
, CONFIG_DRM_EXYNOS5433_DECON
),
507 DRM_COMPONENT_DRIVER
| DRM_DMA_DEVICE
509 DRV_PTR(decon_driver
, CONFIG_DRM_EXYNOS7_DECON
),
510 DRM_COMPONENT_DRIVER
| DRM_DMA_DEVICE
512 DRV_PTR(mixer_driver
, CONFIG_DRM_EXYNOS_MIXER
),
513 DRM_COMPONENT_DRIVER
| DRM_DMA_DEVICE
515 DRV_PTR(mic_driver
, CONFIG_DRM_EXYNOS_MIC
),
518 DRV_PTR(dp_driver
, CONFIG_DRM_EXYNOS_DP
),
521 DRV_PTR(dsi_driver
, CONFIG_DRM_EXYNOS_DSI
),
524 DRV_PTR(hdmi_driver
, CONFIG_DRM_EXYNOS_HDMI
),
527 DRV_PTR(vidi_driver
, CONFIG_DRM_EXYNOS_VIDI
),
528 DRM_COMPONENT_DRIVER
| DRM_VIRTUAL_DEVICE
530 DRV_PTR(g2d_driver
, CONFIG_DRM_EXYNOS_G2D
),
532 DRV_PTR(fimc_driver
, CONFIG_DRM_EXYNOS_FIMC
),
534 DRV_PTR(rotator_driver
, CONFIG_DRM_EXYNOS_ROTATOR
),
536 DRV_PTR(gsc_driver
, CONFIG_DRM_EXYNOS_GSC
),
538 DRV_PTR(ipp_driver
, CONFIG_DRM_EXYNOS_IPP
),
541 &exynos_drm_platform_driver
,
546 static int compare_dev(struct device
*dev
, void *data
)
548 return dev
== (struct device
*)data
;
551 static struct component_match
*exynos_drm_match_add(struct device
*dev
)
553 struct component_match
*match
= NULL
;
556 for (i
= 0; i
< ARRAY_SIZE(exynos_drm_drivers
); ++i
) {
557 struct exynos_drm_driver_info
*info
= &exynos_drm_drivers
[i
];
558 struct device
*p
= NULL
, *d
;
560 if (!info
->driver
|| !(info
->flags
& DRM_COMPONENT_DRIVER
))
563 while ((d
= bus_find_device(&platform_bus_type
, p
,
564 &info
->driver
->driver
,
565 (void *)platform_bus_type
.match
))) {
567 component_match_add(dev
, &match
, compare_dev
, d
);
573 return match
?: ERR_PTR(-ENODEV
);
576 static int exynos_drm_bind(struct device
*dev
)
578 return drm_platform_init(&exynos_drm_driver
, to_platform_device(dev
));
581 static void exynos_drm_unbind(struct device
*dev
)
583 drm_put_dev(dev_get_drvdata(dev
));
586 static const struct component_master_ops exynos_drm_ops
= {
587 .bind
= exynos_drm_bind
,
588 .unbind
= exynos_drm_unbind
,
591 static int exynos_drm_platform_probe(struct platform_device
*pdev
)
593 struct component_match
*match
;
595 pdev
->dev
.coherent_dma_mask
= DMA_BIT_MASK(32);
596 exynos_drm_driver
.num_ioctls
= ARRAY_SIZE(exynos_ioctls
);
598 match
= exynos_drm_match_add(&pdev
->dev
);
600 return PTR_ERR(match
);
602 return component_master_add_with_match(&pdev
->dev
, &exynos_drm_ops
,
606 static int exynos_drm_platform_remove(struct platform_device
*pdev
)
608 component_master_del(&pdev
->dev
, &exynos_drm_ops
);
612 static struct platform_driver exynos_drm_platform_driver
= {
613 .probe
= exynos_drm_platform_probe
,
614 .remove
= exynos_drm_platform_remove
,
616 .name
= "exynos-drm",
617 .pm
= &exynos_drm_pm_ops
,
621 static struct device
*exynos_drm_get_dma_device(void)
625 for (i
= 0; i
< ARRAY_SIZE(exynos_drm_drivers
); ++i
) {
626 struct exynos_drm_driver_info
*info
= &exynos_drm_drivers
[i
];
629 if (!info
->driver
|| !(info
->flags
& DRM_DMA_DEVICE
))
632 while ((dev
= bus_find_device(&platform_bus_type
, NULL
,
633 &info
->driver
->driver
,
634 (void *)platform_bus_type
.match
))) {
642 static void exynos_drm_unregister_devices(void)
646 for (i
= ARRAY_SIZE(exynos_drm_drivers
) - 1; i
>= 0; --i
) {
647 struct exynos_drm_driver_info
*info
= &exynos_drm_drivers
[i
];
650 if (!info
->driver
|| !(info
->flags
& DRM_VIRTUAL_DEVICE
))
653 while ((dev
= bus_find_device(&platform_bus_type
, NULL
,
654 &info
->driver
->driver
,
655 (void *)platform_bus_type
.match
))) {
657 platform_device_unregister(to_platform_device(dev
));
662 static int exynos_drm_register_devices(void)
664 struct platform_device
*pdev
;
667 for (i
= 0; i
< ARRAY_SIZE(exynos_drm_drivers
); ++i
) {
668 struct exynos_drm_driver_info
*info
= &exynos_drm_drivers
[i
];
670 if (!info
->driver
|| !(info
->flags
& DRM_VIRTUAL_DEVICE
))
673 pdev
= platform_device_register_simple(
674 info
->driver
->driver
.name
, -1, NULL
, 0);
681 exynos_drm_unregister_devices();
682 return PTR_ERR(pdev
);
685 static void exynos_drm_unregister_drivers(void)
689 for (i
= ARRAY_SIZE(exynos_drm_drivers
) - 1; i
>= 0; --i
) {
690 struct exynos_drm_driver_info
*info
= &exynos_drm_drivers
[i
];
695 platform_driver_unregister(info
->driver
);
699 static int exynos_drm_register_drivers(void)
703 for (i
= 0; i
< ARRAY_SIZE(exynos_drm_drivers
); ++i
) {
704 struct exynos_drm_driver_info
*info
= &exynos_drm_drivers
[i
];
709 ret
= platform_driver_register(info
->driver
);
715 exynos_drm_unregister_drivers();
719 static int exynos_drm_init(void)
723 ret
= exynos_drm_register_devices();
727 ret
= exynos_drm_register_drivers();
729 goto err_unregister_pdevs
;
733 err_unregister_pdevs
:
734 exynos_drm_unregister_devices();
739 static void exynos_drm_exit(void)
741 exynos_drm_unregister_drivers();
742 exynos_drm_unregister_devices();
745 module_init(exynos_drm_init
);
746 module_exit(exynos_drm_exit
);
748 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
749 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
750 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
751 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
752 MODULE_LICENSE("GPL");