2 * drivers/staging/omapdrm/omap_drv.c
4 * Copyright (C) 2011 Texas Instruments
5 * Author: Rob Clark <rob@ti.com>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as published by
9 * the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 * You should have received a copy of the GNU General Public License along with
17 * this program. If not, see <http://www.gnu.org/licenses/>.
22 #include "drm_crtc_helper.h"
23 #include "drm_fb_helper.h"
24 #include "omap_dmm_tiler.h"
26 #define DRIVER_NAME MODULE_NAME
27 #define DRIVER_DESC "OMAP DRM"
28 #define DRIVER_DATE "20110917"
29 #define DRIVER_MAJOR 1
30 #define DRIVER_MINOR 0
31 #define DRIVER_PATCHLEVEL 0
33 static int num_crtc = CONFIG_DRM_OMAP_NUM_CRTCS;
35 MODULE_PARM_DESC(num_crtc, "Number of overlays to use as CRTCs");
36 module_param(num_crtc, int, 0600);
42 /* Notes about mapping DSS and DRM entities:
44 * encoder: manager.. with some extension to allow one primary CRTC
45 * and zero or more video CRTC's to be mapped to one encoder?
46 * connector: dssdev.. manager can be attached/detached from different
50 static void omap_fb_output_poll_changed(struct drm_device *dev)
52 struct omap_drm_private *priv = dev->dev_private;
55 drm_fb_helper_hotplug_event(priv->fbdev);
58 static const struct drm_mode_config_funcs omap_mode_config_funcs = {
59 .fb_create = omap_framebuffer_create,
60 .output_poll_changed = omap_fb_output_poll_changed,
63 static int get_connector_type(struct omap_dss_device *dssdev)
65 switch (dssdev->type) {
66 case OMAP_DISPLAY_TYPE_HDMI:
67 return DRM_MODE_CONNECTOR_HDMIA;
68 case OMAP_DISPLAY_TYPE_DPI:
69 if (!strcmp(dssdev->name, "dvi"))
70 return DRM_MODE_CONNECTOR_DVID;
73 return DRM_MODE_CONNECTOR_Unknown;
77 static int omap_modeset_init(struct drm_device *dev)
79 struct omap_drm_private *priv = dev->dev_private;
80 struct omap_dss_device *dssdev = NULL;
81 int num_ovls = dss_feat_get_num_ovls();
84 drm_mode_config_init(dev);
86 omap_drm_irq_install(dev);
89 * Create private planes and CRTCs for the last NUM_CRTCs overlay
92 for (id = 0; id < min(num_crtc, num_ovls); id++) {
93 struct drm_plane *plane;
94 struct drm_crtc *crtc;
96 plane = omap_plane_init(dev, id, true);
97 crtc = omap_crtc_init(dev, plane, pipe2chan(id), id);
99 BUG_ON(priv->num_crtcs >= ARRAY_SIZE(priv->crtcs));
100 priv->crtcs[id] = crtc;
103 priv->planes[id] = plane;
108 * Create normal planes for the remaining overlays:
110 for (; id < num_ovls; id++) {
111 struct drm_plane *plane = omap_plane_init(dev, id, false);
113 BUG_ON(priv->num_planes >= ARRAY_SIZE(priv->planes));
114 priv->planes[priv->num_planes++] = plane;
117 for_each_dss_dev(dssdev) {
118 struct drm_connector *connector;
119 struct drm_encoder *encoder;
121 if (!dssdev->driver) {
122 dev_warn(dev->dev, "%s has no driver.. skipping it\n",
127 if (!(dssdev->driver->get_timings ||
128 dssdev->driver->read_edid)) {
129 dev_warn(dev->dev, "%s driver does not support "
130 "get_timings or read_edid.. skipping it!\n",
135 encoder = omap_encoder_init(dev, dssdev);
138 dev_err(dev->dev, "could not create encoder: %s\n",
143 connector = omap_connector_init(dev,
144 get_connector_type(dssdev), dssdev, encoder);
147 dev_err(dev->dev, "could not create connector: %s\n",
152 BUG_ON(priv->num_encoders >= ARRAY_SIZE(priv->encoders));
153 BUG_ON(priv->num_connectors >= ARRAY_SIZE(priv->connectors));
155 priv->encoders[priv->num_encoders++] = encoder;
156 priv->connectors[priv->num_connectors++] = connector;
158 drm_mode_connector_attach_encoder(connector, encoder);
160 /* figure out which crtc's we can connect the encoder to: */
161 encoder->possible_crtcs = 0;
162 for (id = 0; id < priv->num_crtcs; id++) {
163 enum omap_dss_output_id supported_outputs =
164 dss_feat_get_supported_outputs(pipe2chan(id));
165 if (supported_outputs & dssdev->output->id)
166 encoder->possible_crtcs |= (1 << id);
170 dev->mode_config.min_width = 32;
171 dev->mode_config.min_height = 32;
173 /* note: eventually will need some cpu_is_omapXYZ() type stuff here
174 * to fill in these limits properly on different OMAP generations..
176 dev->mode_config.max_width = 2048;
177 dev->mode_config.max_height = 2048;
179 dev->mode_config.funcs = &omap_mode_config_funcs;
184 static void omap_modeset_free(struct drm_device *dev)
186 drm_mode_config_cleanup(dev);
194 static int ioctl_get_param(struct drm_device *dev, void *data,
195 struct drm_file *file_priv)
197 struct omap_drm_private *priv = dev->dev_private;
198 struct drm_omap_param *args = data;
200 DBG("%p: param=%llu", dev, args->param);
202 switch (args->param) {
203 case OMAP_PARAM_CHIPSET_ID:
204 args->value = priv->omaprev;
207 DBG("unknown parameter %lld", args->param);
214 static int ioctl_set_param(struct drm_device *dev, void *data,
215 struct drm_file *file_priv)
217 struct drm_omap_param *args = data;
219 switch (args->param) {
221 DBG("unknown parameter %lld", args->param);
228 static int ioctl_gem_new(struct drm_device *dev, void *data,
229 struct drm_file *file_priv)
231 struct drm_omap_gem_new *args = data;
232 VERB("%p:%p: size=0x%08x, flags=%08x", dev, file_priv,
233 args->size.bytes, args->flags);
234 return omap_gem_new_handle(dev, file_priv, args->size,
235 args->flags, &args->handle);
238 static int ioctl_gem_cpu_prep(struct drm_device *dev, void *data,
239 struct drm_file *file_priv)
241 struct drm_omap_gem_cpu_prep *args = data;
242 struct drm_gem_object *obj;
245 VERB("%p:%p: handle=%d, op=%x", dev, file_priv, args->handle, args->op);
247 obj = drm_gem_object_lookup(dev, file_priv, args->handle);
251 ret = omap_gem_op_sync(obj, args->op);
254 ret = omap_gem_op_start(obj, args->op);
256 drm_gem_object_unreference_unlocked(obj);
261 static int ioctl_gem_cpu_fini(struct drm_device *dev, void *data,
262 struct drm_file *file_priv)
264 struct drm_omap_gem_cpu_fini *args = data;
265 struct drm_gem_object *obj;
268 VERB("%p:%p: handle=%d", dev, file_priv, args->handle);
270 obj = drm_gem_object_lookup(dev, file_priv, args->handle);
274 /* XXX flushy, flushy */
278 ret = omap_gem_op_finish(obj, args->op);
280 drm_gem_object_unreference_unlocked(obj);
285 static int ioctl_gem_info(struct drm_device *dev, void *data,
286 struct drm_file *file_priv)
288 struct drm_omap_gem_info *args = data;
289 struct drm_gem_object *obj;
292 VERB("%p:%p: handle=%d", dev, file_priv, args->handle);
294 obj = drm_gem_object_lookup(dev, file_priv, args->handle);
298 args->size = omap_gem_mmap_size(obj);
299 args->offset = omap_gem_mmap_offset(obj);
301 drm_gem_object_unreference_unlocked(obj);
306 struct drm_ioctl_desc ioctls[DRM_COMMAND_END - DRM_COMMAND_BASE] = {
307 DRM_IOCTL_DEF_DRV(OMAP_GET_PARAM, ioctl_get_param, DRM_UNLOCKED|DRM_AUTH),
308 DRM_IOCTL_DEF_DRV(OMAP_SET_PARAM, ioctl_set_param, DRM_UNLOCKED|DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
309 DRM_IOCTL_DEF_DRV(OMAP_GEM_NEW, ioctl_gem_new, DRM_UNLOCKED|DRM_AUTH),
310 DRM_IOCTL_DEF_DRV(OMAP_GEM_CPU_PREP, ioctl_gem_cpu_prep, DRM_UNLOCKED|DRM_AUTH),
311 DRM_IOCTL_DEF_DRV(OMAP_GEM_CPU_FINI, ioctl_gem_cpu_fini, DRM_UNLOCKED|DRM_AUTH),
312 DRM_IOCTL_DEF_DRV(OMAP_GEM_INFO, ioctl_gem_info, DRM_UNLOCKED|DRM_AUTH),
320 * load - setup chip and create an initial config
322 * @flags: startup flags
324 * The driver load routine has to do several things:
325 * - initialize the memory manager
326 * - allocate initial config memory
327 * - setup the DRM framebuffer with the allocated memory
329 static int dev_load(struct drm_device *dev, unsigned long flags)
331 struct omap_drm_platform_data *pdata = dev->dev->platform_data;
332 struct omap_drm_private *priv;
335 DBG("load: dev=%p", dev);
337 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
339 dev_err(dev->dev, "could not allocate priv\n");
343 priv->omaprev = pdata->omaprev;
345 dev->dev_private = priv;
347 priv->wq = alloc_ordered_workqueue("omapdrm", 0);
349 INIT_LIST_HEAD(&priv->obj_list);
353 ret = omap_modeset_init(dev);
355 dev_err(dev->dev, "omap_modeset_init failed: ret=%d\n", ret);
356 dev->dev_private = NULL;
361 ret = drm_vblank_init(dev, priv->num_crtcs);
363 dev_warn(dev->dev, "could not init vblank\n");
365 priv->fbdev = omap_fbdev_init(dev);
367 dev_warn(dev->dev, "omap_fbdev_init failed\n");
368 /* well, limp along without an fbdev.. maybe X11 will work? */
371 drm_kms_helper_poll_init(dev);
376 static int dev_unload(struct drm_device *dev)
378 struct omap_drm_private *priv = dev->dev_private;
380 DBG("unload: dev=%p", dev);
382 drm_kms_helper_poll_fini(dev);
383 drm_vblank_cleanup(dev);
384 omap_drm_irq_uninstall(dev);
386 omap_fbdev_free(dev);
387 omap_modeset_free(dev);
388 omap_gem_deinit(dev);
390 flush_workqueue(priv->wq);
391 destroy_workqueue(priv->wq);
393 kfree(dev->dev_private);
394 dev->dev_private = NULL;
399 static int dev_open(struct drm_device *dev, struct drm_file *file)
401 file->driver_priv = NULL;
403 DBG("open: dev=%p, file=%p", dev, file);
408 static int dev_firstopen(struct drm_device *dev)
410 DBG("firstopen: dev=%p", dev);
415 * lastclose - clean up after all DRM clients have exited
418 * Take care of cleaning up after all DRM clients have exited. In the
419 * mode setting case, we want to restore the kernel's initial mode (just
420 * in case the last client left us in a bad state).
422 static void dev_lastclose(struct drm_device *dev)
426 /* we don't support vga-switcheroo.. so just make sure the fbdev
429 struct omap_drm_private *priv = dev->dev_private;
432 DBG("lastclose: dev=%p", dev);
434 if (priv->rotation_prop) {
435 /* need to restore default rotation state.. not sure
436 * if there is a cleaner way to restore properties to
437 * default state? Maybe a flag that properties should
438 * automatically be restored to default state on
441 for (i = 0; i < priv->num_crtcs; i++) {
442 drm_object_property_set_value(&priv->crtcs[i]->base,
443 priv->rotation_prop, 0);
446 for (i = 0; i < priv->num_planes; i++) {
447 drm_object_property_set_value(&priv->planes[i]->base,
448 priv->rotation_prop, 0);
452 mutex_lock(&dev->mode_config.mutex);
453 ret = drm_fb_helper_restore_fbdev_mode(priv->fbdev);
454 mutex_unlock(&dev->mode_config.mutex);
456 DBG("failed to restore crtc mode");
459 static void dev_preclose(struct drm_device *dev, struct drm_file *file)
461 DBG("preclose: dev=%p", dev);
464 static void dev_postclose(struct drm_device *dev, struct drm_file *file)
466 DBG("postclose: dev=%p, file=%p", dev, file);
469 static const struct vm_operations_struct omap_gem_vm_ops = {
470 .fault = omap_gem_fault,
471 .open = drm_gem_vm_open,
472 .close = drm_gem_vm_close,
475 static const struct file_operations omapdriver_fops = {
476 .owner = THIS_MODULE,
478 .unlocked_ioctl = drm_ioctl,
479 .release = drm_release,
480 .mmap = omap_gem_mmap,
482 .fasync = drm_fasync,
484 .llseek = noop_llseek,
487 static struct drm_driver omap_drm_driver = {
489 DRIVER_HAVE_IRQ | DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
491 .unload = dev_unload,
493 .firstopen = dev_firstopen,
494 .lastclose = dev_lastclose,
495 .preclose = dev_preclose,
496 .postclose = dev_postclose,
497 .get_vblank_counter = drm_vblank_count,
498 .enable_vblank = omap_irq_enable_vblank,
499 .disable_vblank = omap_irq_disable_vblank,
500 .irq_preinstall = omap_irq_preinstall,
501 .irq_postinstall = omap_irq_postinstall,
502 .irq_uninstall = omap_irq_uninstall,
503 .irq_handler = omap_irq_handler,
504 #ifdef CONFIG_DEBUG_FS
505 .debugfs_init = omap_debugfs_init,
506 .debugfs_cleanup = omap_debugfs_cleanup,
508 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
509 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
510 .gem_prime_export = omap_gem_prime_export,
511 .gem_prime_import = omap_gem_prime_import,
512 .gem_init_object = omap_gem_init_object,
513 .gem_free_object = omap_gem_free_object,
514 .gem_vm_ops = &omap_gem_vm_ops,
515 .dumb_create = omap_gem_dumb_create,
516 .dumb_map_offset = omap_gem_dumb_map_offset,
517 .dumb_destroy = omap_gem_dumb_destroy,
519 .num_ioctls = DRM_OMAP_NUM_IOCTLS,
520 .fops = &omapdriver_fops,
524 .major = DRIVER_MAJOR,
525 .minor = DRIVER_MINOR,
526 .patchlevel = DRIVER_PATCHLEVEL,
529 static int pdev_suspend(struct platform_device *pDevice, pm_message_t state)
535 static int pdev_resume(struct platform_device *device)
541 static void pdev_shutdown(struct platform_device *device)
546 static int pdev_probe(struct platform_device *device)
548 DBG("%s", device->name);
549 return drm_platform_init(&omap_drm_driver, device);
552 static int pdev_remove(struct platform_device *device)
555 drm_platform_exit(&omap_drm_driver, device);
557 platform_driver_unregister(&omap_dmm_driver);
561 struct platform_driver pdev = {
564 .owner = THIS_MODULE,
567 .remove = pdev_remove,
568 .suspend = pdev_suspend,
569 .resume = pdev_resume,
570 .shutdown = pdev_shutdown,
573 static int __init omap_drm_init(void)
576 if (platform_driver_register(&omap_dmm_driver)) {
577 /* we can continue on without DMM.. so not fatal */
578 dev_err(NULL, "DMM registration failed\n");
580 return platform_driver_register(&pdev);
583 static void __exit omap_drm_fini(void)
586 platform_driver_unregister(&pdev);
589 /* need late_initcall() so we load after dss_driver's are loaded */
590 late_initcall(omap_drm_init);
591 module_exit(omap_drm_fini);
593 MODULE_AUTHOR("Rob Clark <rob@ti.com>");
594 MODULE_DESCRIPTION("OMAP DRM Display Driver");
595 MODULE_ALIAS("platform:" DRIVER_NAME);
596 MODULE_LICENSE("GPL v2");