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_postclose(struct drm_device *dev, struct drm_file *file)
87 exynos_drm_subdrv_close(dev, file);
88 kfree(file->driver_priv);
89 file->driver_priv = NULL;
92 static void exynos_drm_lastclose(struct drm_device *dev)
94 exynos_drm_fbdev_restore_mode(dev);
97 static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
98 .fault = exynos_drm_gem_fault,
99 .open = drm_gem_vm_open,
100 .close = drm_gem_vm_close,
103 static const struct drm_ioctl_desc exynos_ioctls[] = {
104 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
105 DRM_AUTH | DRM_RENDER_ALLOW),
106 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP, exynos_drm_gem_map_ioctl,
107 DRM_AUTH | DRM_RENDER_ALLOW),
108 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, exynos_drm_gem_get_ioctl,
110 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, vidi_connection_ioctl,
112 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, exynos_g2d_get_ver_ioctl,
113 DRM_AUTH | DRM_RENDER_ALLOW),
114 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, exynos_g2d_set_cmdlist_ioctl,
115 DRM_AUTH | DRM_RENDER_ALLOW),
116 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, exynos_g2d_exec_ioctl,
117 DRM_AUTH | DRM_RENDER_ALLOW),
118 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY, exynos_drm_ipp_get_property,
119 DRM_AUTH | DRM_RENDER_ALLOW),
120 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY, exynos_drm_ipp_set_property,
121 DRM_AUTH | DRM_RENDER_ALLOW),
122 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF, exynos_drm_ipp_queue_buf,
123 DRM_AUTH | DRM_RENDER_ALLOW),
124 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL, exynos_drm_ipp_cmd_ctrl,
125 DRM_AUTH | DRM_RENDER_ALLOW),
128 static const struct file_operations exynos_drm_driver_fops = {
129 .owner = THIS_MODULE,
131 .mmap = exynos_drm_gem_mmap,
134 .unlocked_ioctl = drm_ioctl,
135 .compat_ioctl = drm_compat_ioctl,
136 .release = drm_release,
139 static struct drm_driver exynos_drm_driver = {
140 .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME
141 | DRIVER_ATOMIC | DRIVER_RENDER,
142 .open = exynos_drm_open,
143 .lastclose = exynos_drm_lastclose,
144 .postclose = exynos_drm_postclose,
145 .gem_free_object_unlocked = exynos_drm_gem_free_object,
146 .gem_vm_ops = &exynos_drm_gem_vm_ops,
147 .dumb_create = exynos_drm_gem_dumb_create,
148 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
149 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
150 .gem_prime_export = drm_gem_prime_export,
151 .gem_prime_import = drm_gem_prime_import,
152 .gem_prime_get_sg_table = exynos_drm_gem_prime_get_sg_table,
153 .gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table,
154 .gem_prime_vmap = exynos_drm_gem_prime_vmap,
155 .gem_prime_vunmap = exynos_drm_gem_prime_vunmap,
156 .gem_prime_mmap = exynos_drm_gem_prime_mmap,
157 .ioctls = exynos_ioctls,
158 .num_ioctls = ARRAY_SIZE(exynos_ioctls),
159 .fops = &exynos_drm_driver_fops,
163 .major = DRIVER_MAJOR,
164 .minor = DRIVER_MINOR,
167 #ifdef CONFIG_PM_SLEEP
168 static int exynos_drm_suspend(struct device *dev)
170 struct drm_device *drm_dev = dev_get_drvdata(dev);
171 struct exynos_drm_private *private;
173 if (pm_runtime_suspended(dev) || !drm_dev)
176 private = drm_dev->dev_private;
178 drm_kms_helper_poll_disable(drm_dev);
179 exynos_drm_fbdev_suspend(drm_dev);
180 private->suspend_state = drm_atomic_helper_suspend(drm_dev);
181 if (IS_ERR(private->suspend_state)) {
182 exynos_drm_fbdev_resume(drm_dev);
183 drm_kms_helper_poll_enable(drm_dev);
184 return PTR_ERR(private->suspend_state);
190 static int exynos_drm_resume(struct device *dev)
192 struct drm_device *drm_dev = dev_get_drvdata(dev);
193 struct exynos_drm_private *private;
195 if (pm_runtime_suspended(dev) || !drm_dev)
198 private = drm_dev->dev_private;
199 drm_atomic_helper_resume(drm_dev, private->suspend_state);
200 exynos_drm_fbdev_resume(drm_dev);
201 drm_kms_helper_poll_enable(drm_dev);
207 static const struct dev_pm_ops exynos_drm_pm_ops = {
208 SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_suspend, exynos_drm_resume)
211 /* forward declaration */
212 static struct platform_driver exynos_drm_platform_driver;
214 struct exynos_drm_driver_info {
215 struct platform_driver *driver;
219 #define DRM_COMPONENT_DRIVER BIT(0) /* supports component framework */
220 #define DRM_VIRTUAL_DEVICE BIT(1) /* create virtual platform device */
221 #define DRM_DMA_DEVICE BIT(2) /* can be used for dma allocations */
223 #define DRV_PTR(drv, cond) (IS_ENABLED(cond) ? &drv : NULL)
226 * Connector drivers should not be placed before associated crtc drivers,
227 * because connector requires pipe number of its crtc during initialization.
229 static struct exynos_drm_driver_info exynos_drm_drivers[] = {
231 DRV_PTR(fimd_driver, CONFIG_DRM_EXYNOS_FIMD),
232 DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
234 DRV_PTR(exynos5433_decon_driver, CONFIG_DRM_EXYNOS5433_DECON),
235 DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
237 DRV_PTR(decon_driver, CONFIG_DRM_EXYNOS7_DECON),
238 DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
240 DRV_PTR(mixer_driver, CONFIG_DRM_EXYNOS_MIXER),
241 DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
243 DRV_PTR(mic_driver, CONFIG_DRM_EXYNOS_MIC),
246 DRV_PTR(dp_driver, CONFIG_DRM_EXYNOS_DP),
249 DRV_PTR(dsi_driver, CONFIG_DRM_EXYNOS_DSI),
252 DRV_PTR(hdmi_driver, CONFIG_DRM_EXYNOS_HDMI),
255 DRV_PTR(vidi_driver, CONFIG_DRM_EXYNOS_VIDI),
256 DRM_COMPONENT_DRIVER | DRM_VIRTUAL_DEVICE
258 DRV_PTR(g2d_driver, CONFIG_DRM_EXYNOS_G2D),
260 DRV_PTR(fimc_driver, CONFIG_DRM_EXYNOS_FIMC),
262 DRV_PTR(rotator_driver, CONFIG_DRM_EXYNOS_ROTATOR),
264 DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC),
266 DRV_PTR(ipp_driver, CONFIG_DRM_EXYNOS_IPP),
269 &exynos_drm_platform_driver,
274 static int compare_dev(struct device *dev, void *data)
276 return dev == (struct device *)data;
279 static struct component_match *exynos_drm_match_add(struct device *dev)
281 struct component_match *match = NULL;
284 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
285 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
286 struct device *p = NULL, *d;
288 if (!info->driver || !(info->flags & DRM_COMPONENT_DRIVER))
291 while ((d = bus_find_device(&platform_bus_type, p,
292 &info->driver->driver,
293 (void *)platform_bus_type.match))) {
295 component_match_add(dev, &match, compare_dev, d);
301 return match ?: ERR_PTR(-ENODEV);
304 static int exynos_drm_bind(struct device *dev)
306 struct exynos_drm_private *private;
307 struct drm_encoder *encoder;
308 struct drm_device *drm;
309 unsigned int clone_mask;
312 drm = drm_dev_alloc(&exynos_drm_driver, dev);
316 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
322 init_waitqueue_head(&private->wait);
323 spin_lock_init(&private->lock);
325 dev_set_drvdata(dev, drm);
326 drm->dev_private = (void *)private;
328 /* the first real CRTC device is used for all dma mapping operations */
329 private->dma_dev = exynos_drm_get_dma_device();
330 if (!private->dma_dev) {
331 DRM_ERROR("no device found for DMA mapping operations.\n");
333 goto err_free_private;
335 DRM_INFO("Exynos DRM: using %s device for DMA mapping operations\n",
336 dev_name(private->dma_dev));
338 /* create common IOMMU mapping for all devices attached to Exynos DRM */
339 ret = drm_create_iommu_mapping(drm);
341 DRM_ERROR("failed to create iommu mapping.\n");
342 goto err_free_private;
345 drm_mode_config_init(drm);
347 exynos_drm_mode_config_init(drm);
349 /* setup possible_clones. */
352 list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
353 clone_mask |= (1 << (cnt++));
355 list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
356 encoder->possible_clones = clone_mask;
358 /* Try to bind all sub drivers. */
359 ret = component_bind_all(drm->dev, drm);
361 goto err_mode_config_cleanup;
363 ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
367 /* Probe non kms sub drivers and virtual display driver. */
368 ret = exynos_drm_device_subdrv_probe(drm);
372 drm_mode_config_reset(drm);
375 * enable drm irq mode.
376 * - with irq_enabled = true, we can use the vblank feature.
378 * P.S. note that we wouldn't use drm irq handler but
379 * just specific driver own one instead because
380 * drm framework supports only one irq handler.
382 drm->irq_enabled = true;
384 /* init kms poll for handling hpd */
385 drm_kms_helper_poll_init(drm);
387 ret = exynos_drm_fbdev_init(drm);
389 goto err_cleanup_poll;
391 /* register the DRM device */
392 ret = drm_dev_register(drm, 0);
394 goto err_cleanup_fbdev;
399 exynos_drm_fbdev_fini(drm);
401 drm_kms_helper_poll_fini(drm);
402 exynos_drm_device_subdrv_remove(drm);
404 component_unbind_all(drm->dev, drm);
405 err_mode_config_cleanup:
406 drm_mode_config_cleanup(drm);
407 drm_release_iommu_mapping(drm);
416 static void exynos_drm_unbind(struct device *dev)
418 struct drm_device *drm = dev_get_drvdata(dev);
420 drm_dev_unregister(drm);
422 exynos_drm_device_subdrv_remove(drm);
424 exynos_drm_fbdev_fini(drm);
425 drm_kms_helper_poll_fini(drm);
427 component_unbind_all(drm->dev, drm);
428 drm_mode_config_cleanup(drm);
429 drm_release_iommu_mapping(drm);
431 kfree(drm->dev_private);
432 drm->dev_private = NULL;
433 dev_set_drvdata(dev, NULL);
438 static const struct component_master_ops exynos_drm_ops = {
439 .bind = exynos_drm_bind,
440 .unbind = exynos_drm_unbind,
443 static int exynos_drm_platform_probe(struct platform_device *pdev)
445 struct component_match *match;
447 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
449 match = exynos_drm_match_add(&pdev->dev);
451 return PTR_ERR(match);
453 return component_master_add_with_match(&pdev->dev, &exynos_drm_ops,
457 static int exynos_drm_platform_remove(struct platform_device *pdev)
459 component_master_del(&pdev->dev, &exynos_drm_ops);
463 static struct platform_driver exynos_drm_platform_driver = {
464 .probe = exynos_drm_platform_probe,
465 .remove = exynos_drm_platform_remove,
467 .name = "exynos-drm",
468 .pm = &exynos_drm_pm_ops,
472 static struct device *exynos_drm_get_dma_device(void)
476 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
477 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
480 if (!info->driver || !(info->flags & DRM_DMA_DEVICE))
483 while ((dev = bus_find_device(&platform_bus_type, NULL,
484 &info->driver->driver,
485 (void *)platform_bus_type.match))) {
493 static void exynos_drm_unregister_devices(void)
497 for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
498 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
501 if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
504 while ((dev = bus_find_device(&platform_bus_type, NULL,
505 &info->driver->driver,
506 (void *)platform_bus_type.match))) {
508 platform_device_unregister(to_platform_device(dev));
513 static int exynos_drm_register_devices(void)
515 struct platform_device *pdev;
518 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
519 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
521 if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
524 pdev = platform_device_register_simple(
525 info->driver->driver.name, -1, NULL, 0);
532 exynos_drm_unregister_devices();
533 return PTR_ERR(pdev);
536 static void exynos_drm_unregister_drivers(void)
540 for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
541 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
546 platform_driver_unregister(info->driver);
550 static int exynos_drm_register_drivers(void)
554 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
555 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
560 ret = platform_driver_register(info->driver);
566 exynos_drm_unregister_drivers();
570 static int exynos_drm_init(void)
574 ret = exynos_drm_register_devices();
578 ret = exynos_drm_register_drivers();
580 goto err_unregister_pdevs;
584 err_unregister_pdevs:
585 exynos_drm_unregister_devices();
590 static void exynos_drm_exit(void)
592 exynos_drm_unregister_drivers();
593 exynos_drm_unregister_devices();
596 module_init(exynos_drm_init);
597 module_exit(exynos_drm_exit);
599 MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
600 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
601 MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
602 MODULE_DESCRIPTION("Samsung SoC DRM Driver");
603 MODULE_LICENSE("GPL");