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_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_g2d.h"
31 #include "exynos_drm_ipp.h"
32 #include "exynos_drm_iommu.h"
34 #define DRIVER_NAME "exynos"
35 #define DRIVER_DESC "Samsung SoC DRM"
36 #define DRIVER_DATE "20110530"
37 #define DRIVER_MAJOR 1
38 #define DRIVER_MINOR 0
40 static struct device *exynos_drm_get_dma_device(void);
42 int exynos_atomic_check(struct drm_device *dev,
43 struct drm_atomic_state *state)
47 ret = drm_atomic_helper_check_modeset(dev, state);
51 ret = drm_atomic_normalize_zpos(dev, state);
55 ret = drm_atomic_helper_check_planes(dev, state);
62 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
64 struct drm_exynos_file_private *file_priv;
67 file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
71 file->driver_priv = file_priv;
73 ret = exynos_drm_subdrv_open(dev, file);
75 goto err_file_priv_free;
81 file->driver_priv = NULL;
85 static void exynos_drm_preclose(struct drm_device *dev,
86 struct drm_file *file)
88 exynos_drm_subdrv_close(dev, file);
91 static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
93 kfree(file->driver_priv);
94 file->driver_priv = NULL;
97 static void exynos_drm_lastclose(struct drm_device *dev)
99 exynos_drm_fbdev_restore_mode(dev);
102 static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
103 .fault = exynos_drm_gem_fault,
104 .open = drm_gem_vm_open,
105 .close = drm_gem_vm_close,
108 static const struct drm_ioctl_desc exynos_ioctls[] = {
109 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
110 DRM_AUTH | DRM_RENDER_ALLOW),
111 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP, exynos_drm_gem_map_ioctl,
112 DRM_AUTH | DRM_RENDER_ALLOW),
113 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, exynos_drm_gem_get_ioctl,
115 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, vidi_connection_ioctl,
117 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, exynos_g2d_get_ver_ioctl,
118 DRM_AUTH | DRM_RENDER_ALLOW),
119 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, exynos_g2d_set_cmdlist_ioctl,
120 DRM_AUTH | DRM_RENDER_ALLOW),
121 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, exynos_g2d_exec_ioctl,
122 DRM_AUTH | DRM_RENDER_ALLOW),
123 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY, exynos_drm_ipp_get_property,
124 DRM_AUTH | DRM_RENDER_ALLOW),
125 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY, exynos_drm_ipp_set_property,
126 DRM_AUTH | DRM_RENDER_ALLOW),
127 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF, exynos_drm_ipp_queue_buf,
128 DRM_AUTH | DRM_RENDER_ALLOW),
129 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL, exynos_drm_ipp_cmd_ctrl,
130 DRM_AUTH | DRM_RENDER_ALLOW),
133 static const struct file_operations exynos_drm_driver_fops = {
134 .owner = THIS_MODULE,
136 .mmap = exynos_drm_gem_mmap,
139 .unlocked_ioctl = drm_ioctl,
140 .compat_ioctl = drm_compat_ioctl,
141 .release = drm_release,
144 static struct drm_driver exynos_drm_driver = {
145 .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME
146 | DRIVER_ATOMIC | DRIVER_RENDER,
147 .open = exynos_drm_open,
148 .preclose = exynos_drm_preclose,
149 .lastclose = exynos_drm_lastclose,
150 .postclose = exynos_drm_postclose,
151 .gem_free_object_unlocked = exynos_drm_gem_free_object,
152 .gem_vm_ops = &exynos_drm_gem_vm_ops,
153 .dumb_create = exynos_drm_gem_dumb_create,
154 .dumb_map_offset = exynos_drm_gem_dumb_map_offset,
155 .dumb_destroy = drm_gem_dumb_destroy,
156 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
157 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
158 .gem_prime_export = drm_gem_prime_export,
159 .gem_prime_import = drm_gem_prime_import,
160 .gem_prime_get_sg_table = exynos_drm_gem_prime_get_sg_table,
161 .gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table,
162 .gem_prime_vmap = exynos_drm_gem_prime_vmap,
163 .gem_prime_vunmap = exynos_drm_gem_prime_vunmap,
164 .gem_prime_mmap = exynos_drm_gem_prime_mmap,
165 .ioctls = exynos_ioctls,
166 .num_ioctls = ARRAY_SIZE(exynos_ioctls),
167 .fops = &exynos_drm_driver_fops,
171 .major = DRIVER_MAJOR,
172 .minor = DRIVER_MINOR,
175 #ifdef CONFIG_PM_SLEEP
176 static int exynos_drm_suspend(struct device *dev)
178 struct drm_device *drm_dev = dev_get_drvdata(dev);
179 struct drm_connector *connector;
181 if (pm_runtime_suspended(dev) || !drm_dev)
184 drm_modeset_lock_all(drm_dev);
185 drm_for_each_connector(connector, drm_dev) {
186 int old_dpms = connector->dpms;
188 if (connector->funcs->dpms)
189 connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF);
191 /* Set the old mode back to the connector for resume */
192 connector->dpms = old_dpms;
194 drm_modeset_unlock_all(drm_dev);
199 static int exynos_drm_resume(struct device *dev)
201 struct drm_device *drm_dev = dev_get_drvdata(dev);
202 struct drm_connector *connector;
204 if (pm_runtime_suspended(dev) || !drm_dev)
207 drm_modeset_lock_all(drm_dev);
208 drm_for_each_connector(connector, drm_dev) {
209 if (connector->funcs->dpms) {
210 int dpms = connector->dpms;
212 connector->dpms = DRM_MODE_DPMS_OFF;
213 connector->funcs->dpms(connector, dpms);
216 drm_modeset_unlock_all(drm_dev);
222 static const struct dev_pm_ops exynos_drm_pm_ops = {
223 SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_suspend, exynos_drm_resume)
226 /* forward declaration */
227 static struct platform_driver exynos_drm_platform_driver;
229 struct exynos_drm_driver_info {
230 struct platform_driver *driver;
234 #define DRM_COMPONENT_DRIVER BIT(0) /* supports component framework */
235 #define DRM_VIRTUAL_DEVICE BIT(1) /* create virtual platform device */
236 #define DRM_DMA_DEVICE BIT(2) /* can be used for dma allocations */
238 #define DRV_PTR(drv, cond) (IS_ENABLED(cond) ? &drv : NULL)
241 * Connector drivers should not be placed before associated crtc drivers,
242 * because connector requires pipe number of its crtc during initialization.
244 static struct exynos_drm_driver_info exynos_drm_drivers[] = {
246 DRV_PTR(fimd_driver, CONFIG_DRM_EXYNOS_FIMD),
247 DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
249 DRV_PTR(exynos5433_decon_driver, CONFIG_DRM_EXYNOS5433_DECON),
250 DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
252 DRV_PTR(decon_driver, CONFIG_DRM_EXYNOS7_DECON),
253 DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
255 DRV_PTR(mixer_driver, CONFIG_DRM_EXYNOS_MIXER),
256 DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
258 DRV_PTR(mic_driver, CONFIG_DRM_EXYNOS_MIC),
261 DRV_PTR(dp_driver, CONFIG_DRM_EXYNOS_DP),
264 DRV_PTR(dsi_driver, CONFIG_DRM_EXYNOS_DSI),
267 DRV_PTR(hdmi_driver, CONFIG_DRM_EXYNOS_HDMI),
270 DRV_PTR(vidi_driver, CONFIG_DRM_EXYNOS_VIDI),
271 DRM_COMPONENT_DRIVER | DRM_VIRTUAL_DEVICE
273 DRV_PTR(g2d_driver, CONFIG_DRM_EXYNOS_G2D),
275 DRV_PTR(fimc_driver, CONFIG_DRM_EXYNOS_FIMC),
277 DRV_PTR(rotator_driver, CONFIG_DRM_EXYNOS_ROTATOR),
279 DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC),
281 DRV_PTR(ipp_driver, CONFIG_DRM_EXYNOS_IPP),
284 &exynos_drm_platform_driver,
289 static int compare_dev(struct device *dev, void *data)
291 return dev == (struct device *)data;
294 static struct component_match *exynos_drm_match_add(struct device *dev)
296 struct component_match *match = NULL;
299 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
300 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
301 struct device *p = NULL, *d;
303 if (!info->driver || !(info->flags & DRM_COMPONENT_DRIVER))
306 while ((d = bus_find_device(&platform_bus_type, p,
307 &info->driver->driver,
308 (void *)platform_bus_type.match))) {
310 component_match_add(dev, &match, compare_dev, d);
316 return match ?: ERR_PTR(-ENODEV);
319 static int exynos_drm_bind(struct device *dev)
321 struct exynos_drm_private *private;
322 struct drm_encoder *encoder;
323 struct drm_device *drm;
324 unsigned int clone_mask;
327 drm = drm_dev_alloc(&exynos_drm_driver, dev);
331 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
337 init_waitqueue_head(&private->wait);
338 spin_lock_init(&private->lock);
340 dev_set_drvdata(dev, drm);
341 drm->dev_private = (void *)private;
343 /* the first real CRTC device is used for all dma mapping operations */
344 private->dma_dev = exynos_drm_get_dma_device();
345 if (!private->dma_dev) {
346 DRM_ERROR("no device found for DMA mapping operations.\n");
348 goto err_free_private;
350 DRM_INFO("Exynos DRM: using %s device for DMA mapping operations\n",
351 dev_name(private->dma_dev));
353 /* create common IOMMU mapping for all devices attached to Exynos DRM */
354 ret = drm_create_iommu_mapping(drm);
356 DRM_ERROR("failed to create iommu mapping.\n");
357 goto err_free_private;
360 drm_mode_config_init(drm);
362 exynos_drm_mode_config_init(drm);
364 /* setup possible_clones. */
367 list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
368 clone_mask |= (1 << (cnt++));
370 list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
371 encoder->possible_clones = clone_mask;
373 /* Try to bind all sub drivers. */
374 ret = component_bind_all(drm->dev, drm);
376 goto err_mode_config_cleanup;
378 ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
382 /* Probe non kms sub drivers and virtual display driver. */
383 ret = exynos_drm_device_subdrv_probe(drm);
385 goto err_cleanup_vblank;
387 drm_mode_config_reset(drm);
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.
397 drm->irq_enabled = true;
399 /* init kms poll for handling hpd */
400 drm_kms_helper_poll_init(drm);
402 /* force connectors detection */
403 drm_helper_hpd_irq_event(drm);
405 /* register the DRM device */
406 ret = drm_dev_register(drm, 0);
408 goto err_cleanup_fbdev;
413 exynos_drm_fbdev_fini(drm);
414 drm_kms_helper_poll_fini(drm);
415 exynos_drm_device_subdrv_remove(drm);
417 drm_vblank_cleanup(drm);
419 component_unbind_all(drm->dev, drm);
420 err_mode_config_cleanup:
421 drm_mode_config_cleanup(drm);
422 drm_release_iommu_mapping(drm);
431 static void exynos_drm_unbind(struct device *dev)
433 struct drm_device *drm = dev_get_drvdata(dev);
435 drm_dev_unregister(drm);
437 exynos_drm_device_subdrv_remove(drm);
439 exynos_drm_fbdev_fini(drm);
440 drm_kms_helper_poll_fini(drm);
442 component_unbind_all(drm->dev, drm);
443 drm_mode_config_cleanup(drm);
444 drm_release_iommu_mapping(drm);
446 kfree(drm->dev_private);
447 drm->dev_private = NULL;
452 static const struct component_master_ops exynos_drm_ops = {
453 .bind = exynos_drm_bind,
454 .unbind = exynos_drm_unbind,
457 static int exynos_drm_platform_probe(struct platform_device *pdev)
459 struct component_match *match;
461 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
462 exynos_drm_driver.num_ioctls = ARRAY_SIZE(exynos_ioctls);
464 match = exynos_drm_match_add(&pdev->dev);
466 return PTR_ERR(match);
468 return component_master_add_with_match(&pdev->dev, &exynos_drm_ops,
472 static int exynos_drm_platform_remove(struct platform_device *pdev)
474 component_master_del(&pdev->dev, &exynos_drm_ops);
478 static struct platform_driver exynos_drm_platform_driver = {
479 .probe = exynos_drm_platform_probe,
480 .remove = exynos_drm_platform_remove,
482 .name = "exynos-drm",
483 .pm = &exynos_drm_pm_ops,
487 static struct device *exynos_drm_get_dma_device(void)
491 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
492 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
495 if (!info->driver || !(info->flags & DRM_DMA_DEVICE))
498 while ((dev = bus_find_device(&platform_bus_type, NULL,
499 &info->driver->driver,
500 (void *)platform_bus_type.match))) {
508 static void exynos_drm_unregister_devices(void)
512 for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
513 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
516 if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
519 while ((dev = bus_find_device(&platform_bus_type, NULL,
520 &info->driver->driver,
521 (void *)platform_bus_type.match))) {
523 platform_device_unregister(to_platform_device(dev));
528 static int exynos_drm_register_devices(void)
530 struct platform_device *pdev;
533 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
534 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
536 if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
539 pdev = platform_device_register_simple(
540 info->driver->driver.name, -1, NULL, 0);
547 exynos_drm_unregister_devices();
548 return PTR_ERR(pdev);
551 static void exynos_drm_unregister_drivers(void)
555 for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
556 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
561 platform_driver_unregister(info->driver);
565 static int exynos_drm_register_drivers(void)
569 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
570 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
575 ret = platform_driver_register(info->driver);
581 exynos_drm_unregister_drivers();
585 static int exynos_drm_init(void)
589 ret = exynos_drm_register_devices();
593 ret = exynos_drm_register_drivers();
595 goto err_unregister_pdevs;
599 err_unregister_pdevs:
600 exynos_drm_unregister_devices();
605 static void exynos_drm_exit(void)
607 exynos_drm_unregister_drivers();
608 exynos_drm_unregister_devices();
611 module_init(exynos_drm_init);
612 module_exit(exynos_drm_exit);
614 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
615 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
616 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
617 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
618 MODULE_LICENSE("GPL");