2 * Copyright (c) 2016 Intel Corporation
4 * Permission to use, copy, modify, distribute, and sell this software and its
5 * documentation for any purpose is hereby granted without fee, provided that
6 * the above copyright notice appear in all copies and that both that copyright
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14 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
15 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
16 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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23 #include <linux/slab.h>
24 #include <linux/uaccess.h>
26 #include <drm/drm_plane.h>
27 #include <drm/drm_drv.h>
28 #include <drm/drm_print.h>
29 #include <drm/drm_framebuffer.h>
30 #include <drm/drm_file.h>
31 #include <drm/drm_crtc.h>
32 #include <drm/drm_fourcc.h>
33 #include <drm/drm_managed.h>
34 #include <drm/drm_vblank.h>
36 #include "drm_crtc_internal.h"
41 * A plane represents an image source that can be blended with or overlayed on
42 * top of a CRTC during the scanout process. Planes take their input data from a
43 * &drm_framebuffer object. The plane itself specifies the cropping and scaling
44 * of that image, and where it is placed on the visible area of a display
45 * pipeline, represented by &drm_crtc. A plane can also have additional
46 * properties that specify how the pixels are positioned and blended, like
47 * rotation or Z-position. All these properties are stored in &drm_plane_state.
49 * To create a plane, a KMS drivers allocates and zeroes an instances of
50 * &struct drm_plane (possibly as part of a larger structure) and registers it
51 * with a call to drm_universal_plane_init().
53 * Each plane has a type, see enum drm_plane_type. A plane can be compatible
54 * with multiple CRTCs, see &drm_plane.possible_crtcs.
56 * Each CRTC must have a unique primary plane userspace can attach to enable
57 * the CRTC. In other words, userspace must be able to attach a different
58 * primary plane to each CRTC at the same time. Primary planes can still be
59 * compatible with multiple CRTCs. There must be exactly as many primary planes
62 * Legacy uAPI doesn't expose the primary and cursor planes directly. DRM core
63 * relies on the driver to set the primary and optionally the cursor plane used
64 * for legacy IOCTLs. This is done by calling drm_crtc_init_with_planes(). All
65 * drivers must provide one primary plane per CRTC to avoid surprising legacy
70 * DOC: standard plane properties
72 * DRM planes have a few standardized properties:
75 * Immutable property describing the type of the plane.
77 * For user-space which has enabled the &DRM_CLIENT_CAP_ATOMIC capability,
78 * the plane type is just a hint and is mostly superseded by atomic
79 * test-only commits. The type hint can still be used to come up more
80 * easily with a plane configuration accepted by the driver.
82 * The value of this property can be one of the following:
85 * To light up a CRTC, attaching a primary plane is the most likely to
86 * work if it covers the whole CRTC and doesn't have scaling or
89 * Drivers may support more features for the primary plane, user-space
90 * can find out with test-only atomic commits.
92 * Some primary planes are implicitly used by the kernel in the legacy
93 * IOCTLs &DRM_IOCTL_MODE_SETCRTC and &DRM_IOCTL_MODE_PAGE_FLIP.
94 * Therefore user-space must not mix explicit usage of any primary
95 * plane (e.g. through an atomic commit) with these legacy IOCTLs.
98 * To enable this plane, using a framebuffer configured without scaling
99 * or cropping and with the following properties is the most likely to
102 * - If the driver provides the capabilities &DRM_CAP_CURSOR_WIDTH and
103 * &DRM_CAP_CURSOR_HEIGHT, create the framebuffer with this size.
104 * Otherwise, create a framebuffer with the size 64x64.
105 * - If the driver doesn't support modifiers, create a framebuffer with
106 * a linear layout. Otherwise, use the IN_FORMATS plane property.
108 * Drivers may support more features for the cursor plane, user-space
109 * can find out with test-only atomic commits.
111 * Some cursor planes are implicitly used by the kernel in the legacy
112 * IOCTLs &DRM_IOCTL_MODE_CURSOR and &DRM_IOCTL_MODE_CURSOR2.
113 * Therefore user-space must not mix explicit usage of any cursor
114 * plane (e.g. through an atomic commit) with these legacy IOCTLs.
116 * Some drivers may support cursors even if no cursor plane is exposed.
117 * In this case, the legacy cursor IOCTLs can be used to configure the
121 * Neither primary nor cursor.
123 * Overlay planes are the only planes exposed when the
124 * &DRM_CLIENT_CAP_UNIVERSAL_PLANES capability is disabled.
127 * Blob property which contains the set of buffer format and modifier
128 * pairs supported by this plane. The blob is a struct
129 * drm_format_modifier_blob. Without this property the plane doesn't
130 * support buffers with modifiers. Userspace cannot change this property.
133 static unsigned int drm_num_planes(struct drm_device *dev)
135 unsigned int num = 0;
136 struct drm_plane *tmp;
138 drm_for_each_plane(tmp, dev) {
146 formats_ptr(struct drm_format_modifier_blob *blob)
148 return (u32 *)(((char *)blob) + blob->formats_offset);
151 static inline struct drm_format_modifier *
152 modifiers_ptr(struct drm_format_modifier_blob *blob)
154 return (struct drm_format_modifier *)(((char *)blob) + blob->modifiers_offset);
157 static int create_in_format_blob(struct drm_device *dev, struct drm_plane *plane)
159 const struct drm_mode_config *config = &dev->mode_config;
160 struct drm_property_blob *blob;
161 struct drm_format_modifier *mod;
162 size_t blob_size, formats_size, modifiers_size;
163 struct drm_format_modifier_blob *blob_data;
166 formats_size = sizeof(__u32) * plane->format_count;
167 if (WARN_ON(!formats_size)) {
168 /* 0 formats are never expected */
173 sizeof(struct drm_format_modifier) * plane->modifier_count;
175 blob_size = sizeof(struct drm_format_modifier_blob);
176 /* Modifiers offset is a pointer to a struct with a 64 bit field so it
177 * should be naturally aligned to 8B.
179 BUILD_BUG_ON(sizeof(struct drm_format_modifier_blob) % 8);
180 blob_size += ALIGN(formats_size, 8);
181 blob_size += modifiers_size;
183 blob = drm_property_create_blob(dev, blob_size, NULL);
187 blob_data = blob->data;
188 blob_data->version = FORMAT_BLOB_CURRENT;
189 blob_data->count_formats = plane->format_count;
190 blob_data->formats_offset = sizeof(struct drm_format_modifier_blob);
191 blob_data->count_modifiers = plane->modifier_count;
193 blob_data->modifiers_offset =
194 ALIGN(blob_data->formats_offset + formats_size, 8);
196 memcpy(formats_ptr(blob_data), plane->format_types, formats_size);
198 /* If we can't determine support, just bail */
199 if (!plane->funcs->format_mod_supported)
202 mod = modifiers_ptr(blob_data);
203 for (i = 0; i < plane->modifier_count; i++) {
204 for (j = 0; j < plane->format_count; j++) {
205 if (plane->funcs->format_mod_supported(plane,
206 plane->format_types[j],
207 plane->modifiers[i])) {
209 mod->formats |= 1ULL << j;
213 mod->modifier = plane->modifiers[i];
220 drm_object_attach_property(&plane->base, config->modifiers_property,
227 static int __drm_universal_plane_init(struct drm_device *dev,
228 struct drm_plane *plane,
229 uint32_t possible_crtcs,
230 const struct drm_plane_funcs *funcs,
231 const uint32_t *formats,
232 unsigned int format_count,
233 const uint64_t *format_modifiers,
234 enum drm_plane_type type,
235 const char *name, va_list ap)
237 struct drm_mode_config *config = &dev->mode_config;
238 unsigned int format_modifier_count = 0;
241 /* plane index is used with 32bit bitmasks */
242 if (WARN_ON(config->num_total_plane >= 32))
245 WARN_ON(drm_drv_uses_atomic_modeset(dev) &&
246 (!funcs->atomic_destroy_state ||
247 !funcs->atomic_duplicate_state));
249 ret = drm_mode_object_add(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
253 drm_modeset_lock_init(&plane->mutex);
255 plane->base.properties = &plane->properties;
257 plane->funcs = funcs;
258 plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
260 if (!plane->format_types) {
261 DRM_DEBUG_KMS("out of memory when allocating plane\n");
262 drm_mode_object_unregister(dev, &plane->base);
267 * First driver to need more than 64 formats needs to fix this. Each
268 * format is encoded as a bit and the current code only supports a u64.
270 if (WARN_ON(format_count > 64))
273 if (format_modifiers) {
274 const uint64_t *temp_modifiers = format_modifiers;
276 while (*temp_modifiers++ != DRM_FORMAT_MOD_INVALID)
277 format_modifier_count++;
280 if (format_modifier_count)
281 config->allow_fb_modifiers = true;
283 plane->modifier_count = format_modifier_count;
284 plane->modifiers = kmalloc_array(format_modifier_count,
285 sizeof(format_modifiers[0]),
288 if (format_modifier_count && !plane->modifiers) {
289 DRM_DEBUG_KMS("out of memory when allocating plane\n");
290 kfree(plane->format_types);
291 drm_mode_object_unregister(dev, &plane->base);
296 plane->name = kvasprintf(GFP_KERNEL, name, ap);
298 plane->name = kasprintf(GFP_KERNEL, "plane-%d",
299 drm_num_planes(dev));
302 kfree(plane->format_types);
303 kfree(plane->modifiers);
304 drm_mode_object_unregister(dev, &plane->base);
308 memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
309 plane->format_count = format_count;
310 memcpy(plane->modifiers, format_modifiers,
311 format_modifier_count * sizeof(format_modifiers[0]));
312 plane->possible_crtcs = possible_crtcs;
315 list_add_tail(&plane->head, &config->plane_list);
316 plane->index = config->num_total_plane++;
318 drm_object_attach_property(&plane->base,
319 config->plane_type_property,
322 if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
323 drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
324 drm_object_attach_property(&plane->base, config->prop_in_fence_fd, -1);
325 drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
326 drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
327 drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
328 drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
329 drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
330 drm_object_attach_property(&plane->base, config->prop_src_x, 0);
331 drm_object_attach_property(&plane->base, config->prop_src_y, 0);
332 drm_object_attach_property(&plane->base, config->prop_src_w, 0);
333 drm_object_attach_property(&plane->base, config->prop_src_h, 0);
336 if (config->allow_fb_modifiers)
337 create_in_format_blob(dev, plane);
343 * drm_universal_plane_init - Initialize a new universal plane object
345 * @plane: plane object to init
346 * @possible_crtcs: bitmask of possible CRTCs
347 * @funcs: callbacks for the new plane
348 * @formats: array of supported formats (DRM_FORMAT\_\*)
349 * @format_count: number of elements in @formats
350 * @format_modifiers: array of struct drm_format modifiers terminated by
351 * DRM_FORMAT_MOD_INVALID
352 * @type: type of plane (overlay, primary, cursor)
353 * @name: printf style format string for the plane name, or NULL for default name
355 * Initializes a plane object of type @type. The &drm_plane_funcs.destroy hook
356 * should call drm_plane_cleanup() and kfree() the plane structure. The plane
357 * structure should not be allocated with devm_kzalloc().
359 * Note: consider using drmm_universal_plane_alloc() instead of
360 * drm_universal_plane_init() to let the DRM managed resource infrastructure
361 * take care of cleanup and deallocation.
364 * Zero on success, error code on failure.
366 int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
367 uint32_t possible_crtcs,
368 const struct drm_plane_funcs *funcs,
369 const uint32_t *formats, unsigned int format_count,
370 const uint64_t *format_modifiers,
371 enum drm_plane_type type,
372 const char *name, ...)
377 WARN_ON(!funcs->destroy);
380 ret = __drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
381 formats, format_count, format_modifiers,
386 EXPORT_SYMBOL(drm_universal_plane_init);
388 static void drmm_universal_plane_alloc_release(struct drm_device *dev, void *ptr)
390 struct drm_plane *plane = ptr;
392 if (WARN_ON(!plane->dev))
395 drm_plane_cleanup(plane);
398 void *__drmm_universal_plane_alloc(struct drm_device *dev, size_t size,
399 size_t offset, uint32_t possible_crtcs,
400 const struct drm_plane_funcs *funcs,
401 const uint32_t *formats, unsigned int format_count,
402 const uint64_t *format_modifiers,
403 enum drm_plane_type type,
404 const char *name, ...)
407 struct drm_plane *plane;
411 if (WARN_ON(!funcs || funcs->destroy))
412 return ERR_PTR(-EINVAL);
414 container = drmm_kzalloc(dev, size, GFP_KERNEL);
416 return ERR_PTR(-ENOMEM);
418 plane = container + offset;
421 ret = __drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
422 formats, format_count, format_modifiers,
428 ret = drmm_add_action_or_reset(dev, drmm_universal_plane_alloc_release,
435 EXPORT_SYMBOL(__drmm_universal_plane_alloc);
437 int drm_plane_register_all(struct drm_device *dev)
439 unsigned int num_planes = 0;
440 unsigned int num_zpos = 0;
441 struct drm_plane *plane;
444 drm_for_each_plane(plane, dev) {
445 if (plane->funcs->late_register)
446 ret = plane->funcs->late_register(plane);
450 if (plane->zpos_property)
455 drm_WARN(dev, num_zpos && num_planes != num_zpos,
456 "Mixing planes with and without zpos property is invalid\n");
461 void drm_plane_unregister_all(struct drm_device *dev)
463 struct drm_plane *plane;
465 drm_for_each_plane(plane, dev) {
466 if (plane->funcs->early_unregister)
467 plane->funcs->early_unregister(plane);
472 * drm_plane_init - Initialize a legacy plane
474 * @plane: plane object to init
475 * @possible_crtcs: bitmask of possible CRTCs
476 * @funcs: callbacks for the new plane
477 * @formats: array of supported formats (DRM_FORMAT\_\*)
478 * @format_count: number of elements in @formats
479 * @is_primary: plane type (primary vs overlay)
481 * Legacy API to initialize a DRM plane.
483 * New drivers should call drm_universal_plane_init() instead.
486 * Zero on success, error code on failure.
488 int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
489 uint32_t possible_crtcs,
490 const struct drm_plane_funcs *funcs,
491 const uint32_t *formats, unsigned int format_count,
494 enum drm_plane_type type;
496 type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
497 return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
498 formats, format_count,
501 EXPORT_SYMBOL(drm_plane_init);
504 * drm_plane_cleanup - Clean up the core plane usage
505 * @plane: plane to cleanup
507 * This function cleans up @plane and removes it from the DRM mode setting
508 * core. Note that the function does *not* free the plane structure itself,
509 * this is the responsibility of the caller.
511 void drm_plane_cleanup(struct drm_plane *plane)
513 struct drm_device *dev = plane->dev;
515 drm_modeset_lock_fini(&plane->mutex);
517 kfree(plane->format_types);
518 kfree(plane->modifiers);
519 drm_mode_object_unregister(dev, &plane->base);
521 BUG_ON(list_empty(&plane->head));
523 /* Note that the plane_list is considered to be static; should we
524 * remove the drm_plane at runtime we would have to decrement all
525 * the indices on the drm_plane after us in the plane_list.
528 list_del(&plane->head);
529 dev->mode_config.num_total_plane--;
531 WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
532 if (plane->state && plane->funcs->atomic_destroy_state)
533 plane->funcs->atomic_destroy_state(plane, plane->state);
537 memset(plane, 0, sizeof(*plane));
539 EXPORT_SYMBOL(drm_plane_cleanup);
542 * drm_plane_from_index - find the registered plane at an index
544 * @idx: index of registered plane to find for
546 * Given a plane index, return the registered plane from DRM device's
547 * list of planes with matching index. This is the inverse of drm_plane_index().
550 drm_plane_from_index(struct drm_device *dev, int idx)
552 struct drm_plane *plane;
554 drm_for_each_plane(plane, dev)
555 if (idx == plane->index)
560 EXPORT_SYMBOL(drm_plane_from_index);
563 * drm_plane_force_disable - Forcibly disable a plane
564 * @plane: plane to disable
566 * Forces the plane to be disabled.
568 * Used when the plane's current framebuffer is destroyed,
569 * and when restoring fbdev mode.
571 * Note that this function is not suitable for atomic drivers, since it doesn't
572 * wire through the lock acquisition context properly and hence can't handle
573 * retries or driver private locks. You probably want to use
574 * drm_atomic_helper_disable_plane() or
575 * drm_atomic_helper_disable_planes_on_crtc() instead.
577 void drm_plane_force_disable(struct drm_plane *plane)
584 WARN_ON(drm_drv_uses_atomic_modeset(plane->dev));
586 plane->old_fb = plane->fb;
587 ret = plane->funcs->disable_plane(plane, NULL);
589 DRM_ERROR("failed to disable plane with busy fb\n");
590 plane->old_fb = NULL;
593 /* disconnect the plane from the fb and crtc: */
594 drm_framebuffer_put(plane->old_fb);
595 plane->old_fb = NULL;
599 EXPORT_SYMBOL(drm_plane_force_disable);
602 * drm_mode_plane_set_obj_prop - set the value of a property
603 * @plane: drm plane object to set property value for
604 * @property: property to set
605 * @value: value the property should be set to
607 * This functions sets a given property on a given plane object. This function
608 * calls the driver's ->set_property callback and changes the software state of
609 * the property if the callback succeeds.
612 * Zero on success, error code on failure.
614 int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
615 struct drm_property *property,
619 struct drm_mode_object *obj = &plane->base;
621 if (plane->funcs->set_property)
622 ret = plane->funcs->set_property(plane, property, value);
624 drm_object_property_set_value(obj, property, value);
628 EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
630 int drm_mode_getplane_res(struct drm_device *dev, void *data,
631 struct drm_file *file_priv)
633 struct drm_mode_get_plane_res *plane_resp = data;
634 struct drm_plane *plane;
635 uint32_t __user *plane_ptr;
638 if (!drm_core_check_feature(dev, DRIVER_MODESET))
641 plane_ptr = u64_to_user_ptr(plane_resp->plane_id_ptr);
644 * This ioctl is called twice, once to determine how much space is
645 * needed, and the 2nd time to fill it.
647 drm_for_each_plane(plane, dev) {
649 * Unless userspace set the 'universal planes'
650 * capability bit, only advertise overlays.
652 if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
653 !file_priv->universal_planes)
656 if (drm_lease_held(file_priv, plane->base.id)) {
657 if (count < plane_resp->count_planes &&
658 put_user(plane->base.id, plane_ptr + count))
663 plane_resp->count_planes = count;
668 int drm_mode_getplane(struct drm_device *dev, void *data,
669 struct drm_file *file_priv)
671 struct drm_mode_get_plane *plane_resp = data;
672 struct drm_plane *plane;
673 uint32_t __user *format_ptr;
675 if (!drm_core_check_feature(dev, DRIVER_MODESET))
678 plane = drm_plane_find(dev, file_priv, plane_resp->plane_id);
682 drm_modeset_lock(&plane->mutex, NULL);
683 if (plane->state && plane->state->crtc && drm_lease_held(file_priv, plane->state->crtc->base.id))
684 plane_resp->crtc_id = plane->state->crtc->base.id;
685 else if (!plane->state && plane->crtc && drm_lease_held(file_priv, plane->crtc->base.id))
686 plane_resp->crtc_id = plane->crtc->base.id;
688 plane_resp->crtc_id = 0;
690 if (plane->state && plane->state->fb)
691 plane_resp->fb_id = plane->state->fb->base.id;
692 else if (!plane->state && plane->fb)
693 plane_resp->fb_id = plane->fb->base.id;
695 plane_resp->fb_id = 0;
696 drm_modeset_unlock(&plane->mutex);
698 plane_resp->plane_id = plane->base.id;
699 plane_resp->possible_crtcs = drm_lease_filter_crtcs(file_priv,
700 plane->possible_crtcs);
702 plane_resp->gamma_size = 0;
705 * This ioctl is called twice, once to determine how much space is
706 * needed, and the 2nd time to fill it.
708 if (plane->format_count &&
709 (plane_resp->count_format_types >= plane->format_count)) {
710 format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
711 if (copy_to_user(format_ptr,
713 sizeof(uint32_t) * plane->format_count)) {
717 plane_resp->count_format_types = plane->format_count;
722 int drm_plane_check_pixel_format(struct drm_plane *plane,
723 u32 format, u64 modifier)
727 for (i = 0; i < plane->format_count; i++) {
728 if (format == plane->format_types[i])
731 if (i == plane->format_count)
734 if (plane->funcs->format_mod_supported) {
735 if (!plane->funcs->format_mod_supported(plane, format, modifier))
738 if (!plane->modifier_count)
741 for (i = 0; i < plane->modifier_count; i++) {
742 if (modifier == plane->modifiers[i])
745 if (i == plane->modifier_count)
752 static int __setplane_check(struct drm_plane *plane,
753 struct drm_crtc *crtc,
754 struct drm_framebuffer *fb,
755 int32_t crtc_x, int32_t crtc_y,
756 uint32_t crtc_w, uint32_t crtc_h,
757 uint32_t src_x, uint32_t src_y,
758 uint32_t src_w, uint32_t src_h)
762 /* Check whether this plane is usable on this CRTC */
763 if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
764 DRM_DEBUG_KMS("Invalid crtc for plane\n");
768 /* Check whether this plane supports the fb pixel format. */
769 ret = drm_plane_check_pixel_format(plane, fb->format->format,
772 DRM_DEBUG_KMS("Invalid pixel format %p4cc, modifier 0x%llx\n",
773 &fb->format->format, fb->modifier);
777 /* Give drivers some help against integer overflows */
778 if (crtc_w > INT_MAX ||
779 crtc_x > INT_MAX - (int32_t) crtc_w ||
781 crtc_y > INT_MAX - (int32_t) crtc_h) {
782 DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
783 crtc_w, crtc_h, crtc_x, crtc_y);
787 ret = drm_framebuffer_check_src_coords(src_x, src_y, src_w, src_h, fb);
795 * drm_any_plane_has_format - Check whether any plane supports this format and modifier combination
797 * @format: pixel format (DRM_FORMAT_*)
798 * @modifier: data layout modifier
801 * Whether at least one plane supports the specified format and modifier combination.
803 bool drm_any_plane_has_format(struct drm_device *dev,
804 u32 format, u64 modifier)
806 struct drm_plane *plane;
808 drm_for_each_plane(plane, dev) {
809 if (drm_plane_check_pixel_format(plane, format, modifier) == 0)
815 EXPORT_SYMBOL(drm_any_plane_has_format);
818 * __setplane_internal - setplane handler for internal callers
820 * This function will take a reference on the new fb for the plane
823 * src_{x,y,w,h} are provided in 16.16 fixed point format
825 static int __setplane_internal(struct drm_plane *plane,
826 struct drm_crtc *crtc,
827 struct drm_framebuffer *fb,
828 int32_t crtc_x, int32_t crtc_y,
829 uint32_t crtc_w, uint32_t crtc_h,
830 /* src_{x,y,w,h} values are 16.16 fixed point */
831 uint32_t src_x, uint32_t src_y,
832 uint32_t src_w, uint32_t src_h,
833 struct drm_modeset_acquire_ctx *ctx)
837 WARN_ON(drm_drv_uses_atomic_modeset(plane->dev));
839 /* No fb means shut it down */
841 plane->old_fb = plane->fb;
842 ret = plane->funcs->disable_plane(plane, ctx);
847 plane->old_fb = NULL;
852 ret = __setplane_check(plane, crtc, fb,
853 crtc_x, crtc_y, crtc_w, crtc_h,
854 src_x, src_y, src_w, src_h);
858 plane->old_fb = plane->fb;
859 ret = plane->funcs->update_plane(plane, crtc, fb,
860 crtc_x, crtc_y, crtc_w, crtc_h,
861 src_x, src_y, src_w, src_h, ctx);
865 drm_framebuffer_get(plane->fb);
867 plane->old_fb = NULL;
872 drm_framebuffer_put(plane->old_fb);
873 plane->old_fb = NULL;
878 static int __setplane_atomic(struct drm_plane *plane,
879 struct drm_crtc *crtc,
880 struct drm_framebuffer *fb,
881 int32_t crtc_x, int32_t crtc_y,
882 uint32_t crtc_w, uint32_t crtc_h,
883 uint32_t src_x, uint32_t src_y,
884 uint32_t src_w, uint32_t src_h,
885 struct drm_modeset_acquire_ctx *ctx)
889 WARN_ON(!drm_drv_uses_atomic_modeset(plane->dev));
891 /* No fb means shut it down */
893 return plane->funcs->disable_plane(plane, ctx);
896 * FIXME: This is redundant with drm_atomic_plane_check(),
897 * but the legacy cursor/"async" .update_plane() tricks
898 * don't call that so we still need this here. Should remove
899 * this when all .update_plane() implementations have been
900 * fixed to call drm_atomic_plane_check().
902 ret = __setplane_check(plane, crtc, fb,
903 crtc_x, crtc_y, crtc_w, crtc_h,
904 src_x, src_y, src_w, src_h);
908 return plane->funcs->update_plane(plane, crtc, fb,
909 crtc_x, crtc_y, crtc_w, crtc_h,
910 src_x, src_y, src_w, src_h, ctx);
913 static int setplane_internal(struct drm_plane *plane,
914 struct drm_crtc *crtc,
915 struct drm_framebuffer *fb,
916 int32_t crtc_x, int32_t crtc_y,
917 uint32_t crtc_w, uint32_t crtc_h,
918 /* src_{x,y,w,h} values are 16.16 fixed point */
919 uint32_t src_x, uint32_t src_y,
920 uint32_t src_w, uint32_t src_h)
922 struct drm_modeset_acquire_ctx ctx;
925 DRM_MODESET_LOCK_ALL_BEGIN(plane->dev, ctx,
926 DRM_MODESET_ACQUIRE_INTERRUPTIBLE, ret);
928 if (drm_drv_uses_atomic_modeset(plane->dev))
929 ret = __setplane_atomic(plane, crtc, fb,
930 crtc_x, crtc_y, crtc_w, crtc_h,
931 src_x, src_y, src_w, src_h, &ctx);
933 ret = __setplane_internal(plane, crtc, fb,
934 crtc_x, crtc_y, crtc_w, crtc_h,
935 src_x, src_y, src_w, src_h, &ctx);
937 DRM_MODESET_LOCK_ALL_END(plane->dev, ctx, ret);
942 int drm_mode_setplane(struct drm_device *dev, void *data,
943 struct drm_file *file_priv)
945 struct drm_mode_set_plane *plane_req = data;
946 struct drm_plane *plane;
947 struct drm_crtc *crtc = NULL;
948 struct drm_framebuffer *fb = NULL;
951 if (!drm_core_check_feature(dev, DRIVER_MODESET))
955 * First, find the plane, crtc, and fb objects. If not available,
956 * we don't bother to call the driver.
958 plane = drm_plane_find(dev, file_priv, plane_req->plane_id);
960 DRM_DEBUG_KMS("Unknown plane ID %d\n",
961 plane_req->plane_id);
965 if (plane_req->fb_id) {
966 fb = drm_framebuffer_lookup(dev, file_priv, plane_req->fb_id);
968 DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
973 crtc = drm_crtc_find(dev, file_priv, plane_req->crtc_id);
975 drm_framebuffer_put(fb);
976 DRM_DEBUG_KMS("Unknown crtc ID %d\n",
982 ret = setplane_internal(plane, crtc, fb,
983 plane_req->crtc_x, plane_req->crtc_y,
984 plane_req->crtc_w, plane_req->crtc_h,
985 plane_req->src_x, plane_req->src_y,
986 plane_req->src_w, plane_req->src_h);
989 drm_framebuffer_put(fb);
994 static int drm_mode_cursor_universal(struct drm_crtc *crtc,
995 struct drm_mode_cursor2 *req,
996 struct drm_file *file_priv,
997 struct drm_modeset_acquire_ctx *ctx)
999 struct drm_device *dev = crtc->dev;
1000 struct drm_plane *plane = crtc->cursor;
1001 struct drm_framebuffer *fb = NULL;
1002 struct drm_mode_fb_cmd2 fbreq = {
1003 .width = req->width,
1004 .height = req->height,
1005 .pixel_format = DRM_FORMAT_ARGB8888,
1006 .pitches = { req->width * 4 },
1007 .handles = { req->handle },
1009 int32_t crtc_x, crtc_y;
1010 uint32_t crtc_w = 0, crtc_h = 0;
1011 uint32_t src_w = 0, src_h = 0;
1015 WARN_ON(plane->crtc != crtc && plane->crtc != NULL);
1018 * Obtain fb we'll be using (either new or existing) and take an extra
1019 * reference to it if fb != null. setplane will take care of dropping
1020 * the reference if the plane update fails.
1022 if (req->flags & DRM_MODE_CURSOR_BO) {
1024 fb = drm_internal_framebuffer_create(dev, &fbreq, file_priv);
1026 DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
1030 fb->hot_x = req->hot_x;
1031 fb->hot_y = req->hot_y;
1037 fb = plane->state->fb;
1042 drm_framebuffer_get(fb);
1045 if (req->flags & DRM_MODE_CURSOR_MOVE) {
1049 crtc_x = crtc->cursor_x;
1050 crtc_y = crtc->cursor_y;
1055 crtc_h = fb->height;
1056 src_w = fb->width << 16;
1057 src_h = fb->height << 16;
1060 if (drm_drv_uses_atomic_modeset(dev))
1061 ret = __setplane_atomic(plane, crtc, fb,
1062 crtc_x, crtc_y, crtc_w, crtc_h,
1063 0, 0, src_w, src_h, ctx);
1065 ret = __setplane_internal(plane, crtc, fb,
1066 crtc_x, crtc_y, crtc_w, crtc_h,
1067 0, 0, src_w, src_h, ctx);
1070 drm_framebuffer_put(fb);
1072 /* Update successful; save new cursor position, if necessary */
1073 if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
1074 crtc->cursor_x = req->x;
1075 crtc->cursor_y = req->y;
1081 static int drm_mode_cursor_common(struct drm_device *dev,
1082 struct drm_mode_cursor2 *req,
1083 struct drm_file *file_priv)
1085 struct drm_crtc *crtc;
1086 struct drm_modeset_acquire_ctx ctx;
1089 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1092 if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
1095 crtc = drm_crtc_find(dev, file_priv, req->crtc_id);
1097 DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
1101 drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
1103 ret = drm_modeset_lock(&crtc->mutex, &ctx);
1107 * If this crtc has a universal cursor plane, call that plane's update
1108 * handler rather than using legacy cursor handlers.
1111 ret = drm_modeset_lock(&crtc->cursor->mutex, &ctx);
1115 if (!drm_lease_held(file_priv, crtc->cursor->base.id)) {
1120 ret = drm_mode_cursor_universal(crtc, req, file_priv, &ctx);
1124 if (req->flags & DRM_MODE_CURSOR_BO) {
1125 if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
1129 /* Turns off the cursor if handle is 0 */
1130 if (crtc->funcs->cursor_set2)
1131 ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
1132 req->width, req->height, req->hot_x, req->hot_y);
1134 ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
1135 req->width, req->height);
1138 if (req->flags & DRM_MODE_CURSOR_MOVE) {
1139 if (crtc->funcs->cursor_move) {
1140 ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
1147 if (ret == -EDEADLK) {
1148 ret = drm_modeset_backoff(&ctx);
1153 drm_modeset_drop_locks(&ctx);
1154 drm_modeset_acquire_fini(&ctx);
1161 int drm_mode_cursor_ioctl(struct drm_device *dev,
1162 void *data, struct drm_file *file_priv)
1164 struct drm_mode_cursor *req = data;
1165 struct drm_mode_cursor2 new_req;
1167 memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
1168 new_req.hot_x = new_req.hot_y = 0;
1170 return drm_mode_cursor_common(dev, &new_req, file_priv);
1174 * Set the cursor configuration based on user request. This implements the 2nd
1175 * version of the cursor ioctl, which allows userspace to additionally specify
1176 * the hotspot of the pointer.
1178 int drm_mode_cursor2_ioctl(struct drm_device *dev,
1179 void *data, struct drm_file *file_priv)
1181 struct drm_mode_cursor2 *req = data;
1183 return drm_mode_cursor_common(dev, req, file_priv);
1186 int drm_mode_page_flip_ioctl(struct drm_device *dev,
1187 void *data, struct drm_file *file_priv)
1189 struct drm_mode_crtc_page_flip_target *page_flip = data;
1190 struct drm_crtc *crtc;
1191 struct drm_plane *plane;
1192 struct drm_framebuffer *fb = NULL, *old_fb;
1193 struct drm_pending_vblank_event *e = NULL;
1194 u32 target_vblank = page_flip->sequence;
1195 struct drm_modeset_acquire_ctx ctx;
1198 if (!drm_core_check_feature(dev, DRIVER_MODESET))
1201 if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS)
1204 if (page_flip->sequence != 0 && !(page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET))
1207 /* Only one of the DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE/RELATIVE flags
1210 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) == DRM_MODE_PAGE_FLIP_TARGET)
1213 if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
1216 crtc = drm_crtc_find(dev, file_priv, page_flip->crtc_id);
1220 plane = crtc->primary;
1222 if (!drm_lease_held(file_priv, plane->base.id))
1225 if (crtc->funcs->page_flip_target) {
1229 r = drm_crtc_vblank_get(crtc);
1233 current_vblank = (u32)drm_crtc_vblank_count(crtc);
1235 switch (page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) {
1236 case DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE:
1237 if ((int)(target_vblank - current_vblank) > 1) {
1238 DRM_DEBUG("Invalid absolute flip target %u, "
1239 "must be <= %u\n", target_vblank,
1240 current_vblank + 1);
1241 drm_crtc_vblank_put(crtc);
1245 case DRM_MODE_PAGE_FLIP_TARGET_RELATIVE:
1246 if (target_vblank != 0 && target_vblank != 1) {
1247 DRM_DEBUG("Invalid relative flip target %u, "
1248 "must be 0 or 1\n", target_vblank);
1249 drm_crtc_vblank_put(crtc);
1252 target_vblank += current_vblank;
1255 target_vblank = current_vblank +
1256 !(page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC);
1259 } else if (crtc->funcs->page_flip == NULL ||
1260 (page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET)) {
1264 drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
1266 ret = drm_modeset_lock(&crtc->mutex, &ctx);
1269 ret = drm_modeset_lock(&plane->mutex, &ctx);
1274 old_fb = plane->state->fb;
1278 if (old_fb == NULL) {
1279 /* The framebuffer is currently unbound, presumably
1280 * due to a hotplug event, that userspace has not
1287 fb = drm_framebuffer_lookup(dev, file_priv, page_flip->fb_id);
1294 const struct drm_plane_state *state = plane->state;
1296 ret = drm_framebuffer_check_src_coords(state->src_x,
1302 ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y,
1309 * Only check the FOURCC format code, excluding modifiers. This is
1310 * enough for all legacy drivers. Atomic drivers have their own
1311 * checks in their ->atomic_check implementation, which will
1312 * return -EINVAL if any hw or driver constraint is violated due
1313 * to modifier changes.
1315 if (old_fb->format->format != fb->format->format) {
1316 DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
1321 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
1322 e = kzalloc(sizeof *e, GFP_KERNEL);
1328 e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
1329 e->event.base.length = sizeof(e->event);
1330 e->event.vbl.user_data = page_flip->user_data;
1331 e->event.vbl.crtc_id = crtc->base.id;
1333 ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base);
1341 plane->old_fb = plane->fb;
1342 if (crtc->funcs->page_flip_target)
1343 ret = crtc->funcs->page_flip_target(crtc, fb, e,
1348 ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags,
1351 if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT)
1352 drm_event_cancel_free(dev, &e->base);
1353 /* Keep the old fb, don't unref it. */
1354 plane->old_fb = NULL;
1356 if (!plane->state) {
1358 drm_framebuffer_get(fb);
1364 drm_framebuffer_put(fb);
1366 drm_framebuffer_put(plane->old_fb);
1367 plane->old_fb = NULL;
1369 if (ret == -EDEADLK) {
1370 ret = drm_modeset_backoff(&ctx);
1375 drm_modeset_drop_locks(&ctx);
1376 drm_modeset_acquire_fini(&ctx);
1378 if (ret && crtc->funcs->page_flip_target)
1379 drm_crtc_vblank_put(crtc);
1384 struct drm_property *
1385 drm_create_scaling_filter_prop(struct drm_device *dev,
1386 unsigned int supported_filters)
1388 struct drm_property *prop;
1389 static const struct drm_prop_enum_list props[] = {
1390 { DRM_SCALING_FILTER_DEFAULT, "Default" },
1391 { DRM_SCALING_FILTER_NEAREST_NEIGHBOR, "Nearest Neighbor" },
1393 unsigned int valid_mode_mask = BIT(DRM_SCALING_FILTER_DEFAULT) |
1394 BIT(DRM_SCALING_FILTER_NEAREST_NEIGHBOR);
1397 if (WARN_ON((supported_filters & ~valid_mode_mask) ||
1398 ((supported_filters & BIT(DRM_SCALING_FILTER_DEFAULT)) == 0)))
1399 return ERR_PTR(-EINVAL);
1401 prop = drm_property_create(dev, DRM_MODE_PROP_ENUM,
1403 hweight32(supported_filters));
1405 return ERR_PTR(-ENOMEM);
1407 for (i = 0; i < ARRAY_SIZE(props); i++) {
1410 if (!(BIT(props[i].type) & supported_filters))
1413 ret = drm_property_add_enum(prop, props[i].type,
1417 drm_property_destroy(dev, prop);
1419 return ERR_PTR(ret);
1427 * drm_plane_create_scaling_filter_property - create a new scaling filter
1431 * @supported_filters: bitmask of supported scaling filters, must include
1432 * BIT(DRM_SCALING_FILTER_DEFAULT).
1434 * This function lets driver to enable the scaling filter property on a given
1438 * Zero for success or -errno
1440 int drm_plane_create_scaling_filter_property(struct drm_plane *plane,
1441 unsigned int supported_filters)
1443 struct drm_property *prop =
1444 drm_create_scaling_filter_prop(plane->dev, supported_filters);
1447 return PTR_ERR(prop);
1449 drm_object_attach_property(&plane->base, prop,
1450 DRM_SCALING_FILTER_DEFAULT);
1451 plane->scaling_filter_property = prop;
1455 EXPORT_SYMBOL(drm_plane_create_scaling_filter_property);