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c103d1cf MR |
1 | /* |
2 | * Copyright (C) 2014 Intel Corporation | |
3 | * | |
4 | * DRM universal plane helper functions | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a | |
7 | * copy of this software and associated documentation files (the "Software"), | |
8 | * to deal in the Software without restriction, including without limitation | |
9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
10 | * and/or sell copies of the Software, and to permit persons to whom the | |
11 | * Software is furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice (including the next | |
14 | * paragraph) shall be included in all copies or substantial portions of the | |
15 | * Software. | |
16 | * | |
17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
20 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
21 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
22 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
23 | * SOFTWARE. | |
24 | */ | |
25 | ||
26 | #include <linux/list.h> | |
27 | #include <drm/drmP.h> | |
7daf8d54 | 28 | #include <drm/drm_plane_helper.h> |
c103d1cf | 29 | #include <drm/drm_rect.h> |
321ebf04 | 30 | #include <drm/drm_atomic.h> |
acf24a39 | 31 | #include <drm/drm_crtc_helper.h> |
321ebf04 | 32 | #include <drm/drm_atomic_helper.h> |
c103d1cf MR |
33 | |
34 | #define SUBPIXEL_MASK 0xffff | |
35 | ||
3150c7d0 DV |
36 | /** |
37 | * DOC: overview | |
38 | * | |
39 | * This helper library has two parts. The first part has support to implement | |
40 | * primary plane support on top of the normal CRTC configuration interface. | |
41 | * Since the legacy ->set_config interface ties the primary plane together with | |
42 | * the CRTC state this does not allow userspace to disable the primary plane | |
43 | * itself. To avoid too much duplicated code use | |
44 | * drm_plane_helper_check_update() which can be used to enforce the same | |
45 | * restrictions as primary planes had thus. The default primary plane only | |
46 | * expose XRBG8888 and ARGB8888 as valid pixel formats for the attached | |
47 | * framebuffer. | |
48 | * | |
49 | * Drivers are highly recommended to implement proper support for primary | |
50 | * planes, and newly merged drivers must not rely upon these transitional | |
51 | * helpers. | |
52 | * | |
53 | * The second part also implements transitional helpers which allow drivers to | |
54 | * gradually switch to the atomic helper infrastructure for plane updates. Once | |
55 | * that switch is complete drivers shouldn't use these any longer, instead using | |
56 | * the proper legacy implementations for update and disable plane hooks provided | |
57 | * by the atomic helpers. | |
58 | * | |
59 | * Again drivers are strongly urged to switch to the new interfaces. | |
092d01da DV |
60 | * |
61 | * The plane helpers share the function table structures with other helpers, | |
62 | * specifically also the atomic helpers. See struct &drm_plane_helper_funcs for | |
63 | * the details. | |
3150c7d0 DV |
64 | */ |
65 | ||
c103d1cf MR |
66 | /* |
67 | * This is the minimal list of formats that seem to be safe for modeset use | |
68 | * with all current DRM drivers. Most hardware can actually support more | |
69 | * formats than this and drivers may specify a more accurate list when | |
70 | * creating the primary plane. However drivers that still call | |
71 | * drm_plane_init() will use this minimal format list as the default. | |
72 | */ | |
233fd4ec TR |
73 | static const uint32_t safe_modeset_formats[] = { |
74 | DRM_FORMAT_XRGB8888, | |
75 | DRM_FORMAT_ARGB8888, | |
c103d1cf MR |
76 | }; |
77 | ||
78 | /* | |
79 | * Returns the connectors currently associated with a CRTC. This function | |
80 | * should be called twice: once with a NULL connector list to retrieve | |
81 | * the list size, and once with the properly allocated list to be filled in. | |
82 | */ | |
83 | static int get_connectors_for_crtc(struct drm_crtc *crtc, | |
84 | struct drm_connector **connector_list, | |
85 | int num_connectors) | |
86 | { | |
87 | struct drm_device *dev = crtc->dev; | |
88 | struct drm_connector *connector; | |
89 | int count = 0; | |
90 | ||
6e9f798d DV |
91 | /* |
92 | * Note: Once we change the plane hooks to more fine-grained locking we | |
93 | * need to grab the connection_mutex here to be able to make these | |
94 | * checks. | |
95 | */ | |
51fd371b | 96 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
6e9f798d | 97 | |
9a9f5ce8 | 98 | drm_for_each_connector(connector, dev) { |
c103d1cf MR |
99 | if (connector->encoder && connector->encoder->crtc == crtc) { |
100 | if (connector_list != NULL && count < num_connectors) | |
101 | *(connector_list++) = connector; | |
102 | ||
103 | count++; | |
104 | } | |
9a9f5ce8 | 105 | } |
c103d1cf MR |
106 | |
107 | return count; | |
108 | } | |
109 | ||
7daf8d54 MR |
110 | /** |
111 | * drm_plane_helper_check_update() - Check plane update for validity | |
112 | * @plane: plane object to update | |
113 | * @crtc: owning CRTC of owning plane | |
114 | * @fb: framebuffer to flip onto plane | |
115 | * @src: source coordinates in 16.16 fixed point | |
116 | * @dest: integer destination coordinates | |
117 | * @clip: integer clipping coordinates | |
9b8b013d | 118 | * @rotation: plane rotation |
7daf8d54 MR |
119 | * @min_scale: minimum @src:@dest scaling factor in 16.16 fixed point |
120 | * @max_scale: maximum @src:@dest scaling factor in 16.16 fixed point | |
121 | * @can_position: is it legal to position the plane such that it | |
122 | * doesn't cover the entire crtc? This will generally | |
123 | * only be false for primary planes. | |
124 | * @can_update_disabled: can the plane be updated while the crtc | |
125 | * is disabled? | |
126 | * @visible: output parameter indicating whether plane is still visible after | |
127 | * clipping | |
128 | * | |
129 | * Checks that a desired plane update is valid. Drivers that provide | |
130 | * their own plane handling rather than helper-provided implementations may | |
131 | * still wish to call this function to avoid duplication of error checking | |
132 | * code. | |
133 | * | |
134 | * RETURNS: | |
135 | * Zero if update appears valid, error code on failure | |
136 | */ | |
137 | int drm_plane_helper_check_update(struct drm_plane *plane, | |
9b8b013d VS |
138 | struct drm_crtc *crtc, |
139 | struct drm_framebuffer *fb, | |
140 | struct drm_rect *src, | |
141 | struct drm_rect *dest, | |
142 | const struct drm_rect *clip, | |
143 | unsigned int rotation, | |
144 | int min_scale, | |
145 | int max_scale, | |
146 | bool can_position, | |
147 | bool can_update_disabled, | |
148 | bool *visible) | |
7daf8d54 MR |
149 | { |
150 | int hscale, vscale; | |
151 | ||
7432ca5a MR |
152 | if (!fb) { |
153 | *visible = false; | |
154 | return 0; | |
155 | } | |
156 | ||
157 | /* crtc should only be NULL when disabling (i.e., !fb) */ | |
158 | if (WARN_ON(!crtc)) { | |
159 | *visible = false; | |
160 | return 0; | |
161 | } | |
162 | ||
7daf8d54 MR |
163 | if (!crtc->enabled && !can_update_disabled) { |
164 | DRM_DEBUG_KMS("Cannot update plane of a disabled CRTC.\n"); | |
165 | return -EINVAL; | |
166 | } | |
167 | ||
9b8b013d VS |
168 | drm_rect_rotate(src, fb->width << 16, fb->height << 16, rotation); |
169 | ||
7daf8d54 MR |
170 | /* Check scaling */ |
171 | hscale = drm_rect_calc_hscale(src, dest, min_scale, max_scale); | |
172 | vscale = drm_rect_calc_vscale(src, dest, min_scale, max_scale); | |
173 | if (hscale < 0 || vscale < 0) { | |
174 | DRM_DEBUG_KMS("Invalid scaling of plane\n"); | |
f980a71a VS |
175 | drm_rect_debug_print("src: ", src, true); |
176 | drm_rect_debug_print("dst: ", dest, false); | |
7daf8d54 MR |
177 | return -ERANGE; |
178 | } | |
179 | ||
180 | *visible = drm_rect_clip_scaled(src, dest, clip, hscale, vscale); | |
9b8b013d VS |
181 | |
182 | drm_rect_rotate_inv(src, fb->width << 16, fb->height << 16, rotation); | |
183 | ||
7daf8d54 MR |
184 | if (!*visible) |
185 | /* | |
186 | * Plane isn't visible; some drivers can handle this | |
187 | * so we just return success here. Drivers that can't | |
188 | * (including those that use the primary plane helper's | |
189 | * update function) will return an error from their | |
190 | * update_plane handler. | |
191 | */ | |
192 | return 0; | |
193 | ||
194 | if (!can_position && !drm_rect_equals(dest, clip)) { | |
195 | DRM_DEBUG_KMS("Plane must cover entire CRTC\n"); | |
f980a71a VS |
196 | drm_rect_debug_print("dst: ", dest, false); |
197 | drm_rect_debug_print("clip: ", clip, false); | |
7daf8d54 MR |
198 | return -EINVAL; |
199 | } | |
200 | ||
201 | return 0; | |
202 | } | |
203 | EXPORT_SYMBOL(drm_plane_helper_check_update); | |
204 | ||
c103d1cf MR |
205 | /** |
206 | * drm_primary_helper_update() - Helper for primary plane update | |
207 | * @plane: plane object to update | |
208 | * @crtc: owning CRTC of owning plane | |
209 | * @fb: framebuffer to flip onto plane | |
210 | * @crtc_x: x offset of primary plane on crtc | |
211 | * @crtc_y: y offset of primary plane on crtc | |
212 | * @crtc_w: width of primary plane rectangle on crtc | |
213 | * @crtc_h: height of primary plane rectangle on crtc | |
214 | * @src_x: x offset of @fb for panning | |
215 | * @src_y: y offset of @fb for panning | |
216 | * @src_w: width of source rectangle in @fb | |
217 | * @src_h: height of source rectangle in @fb | |
218 | * | |
219 | * Provides a default plane update handler for primary planes. This is handler | |
220 | * is called in response to a userspace SetPlane operation on the plane with a | |
221 | * non-NULL framebuffer. We call the driver's modeset handler to update the | |
222 | * framebuffer. | |
223 | * | |
224 | * SetPlane() on a primary plane of a disabled CRTC is not supported, and will | |
225 | * return an error. | |
226 | * | |
227 | * Note that we make some assumptions about hardware limitations that may not be | |
228 | * true for all hardware -- | |
2e7a5701 DV |
229 | * |
230 | * 1. Primary plane cannot be repositioned. | |
231 | * 2. Primary plane cannot be scaled. | |
232 | * 3. Primary plane must cover the entire CRTC. | |
233 | * 4. Subpixel positioning is not supported. | |
234 | * | |
c103d1cf MR |
235 | * Drivers for hardware that don't have these restrictions can provide their |
236 | * own implementation rather than using this helper. | |
237 | * | |
238 | * RETURNS: | |
239 | * Zero on success, error code on failure | |
240 | */ | |
241 | int drm_primary_helper_update(struct drm_plane *plane, struct drm_crtc *crtc, | |
242 | struct drm_framebuffer *fb, | |
243 | int crtc_x, int crtc_y, | |
244 | unsigned int crtc_w, unsigned int crtc_h, | |
245 | uint32_t src_x, uint32_t src_y, | |
246 | uint32_t src_w, uint32_t src_h) | |
247 | { | |
248 | struct drm_mode_set set = { | |
249 | .crtc = crtc, | |
250 | .fb = fb, | |
251 | .mode = &crtc->mode, | |
252 | .x = src_x >> 16, | |
253 | .y = src_y >> 16, | |
254 | }; | |
7daf8d54 MR |
255 | struct drm_rect src = { |
256 | .x1 = src_x, | |
257 | .y1 = src_y, | |
258 | .x2 = src_x + src_w, | |
259 | .y2 = src_y + src_h, | |
260 | }; | |
c103d1cf MR |
261 | struct drm_rect dest = { |
262 | .x1 = crtc_x, | |
263 | .y1 = crtc_y, | |
264 | .x2 = crtc_x + crtc_w, | |
265 | .y2 = crtc_y + crtc_h, | |
266 | }; | |
7daf8d54 | 267 | const struct drm_rect clip = { |
c103d1cf MR |
268 | .x2 = crtc->mode.hdisplay, |
269 | .y2 = crtc->mode.vdisplay, | |
270 | }; | |
271 | struct drm_connector **connector_list; | |
c103d1cf | 272 | int num_connectors, ret; |
7daf8d54 | 273 | bool visible; |
c103d1cf | 274 | |
7daf8d54 MR |
275 | ret = drm_plane_helper_check_update(plane, crtc, fb, |
276 | &src, &dest, &clip, | |
9b8b013d | 277 | BIT(DRM_ROTATE_0), |
7daf8d54 MR |
278 | DRM_PLANE_HELPER_NO_SCALING, |
279 | DRM_PLANE_HELPER_NO_SCALING, | |
280 | false, false, &visible); | |
c103d1cf MR |
281 | if (ret) |
282 | return ret; | |
283 | ||
7daf8d54 MR |
284 | if (!visible) |
285 | /* | |
286 | * Primary plane isn't visible. Note that unless a driver | |
287 | * provides their own disable function, this will just | |
288 | * wind up returning -EINVAL to userspace. | |
289 | */ | |
290 | return plane->funcs->disable_plane(plane); | |
291 | ||
c103d1cf MR |
292 | /* Find current connectors for CRTC */ |
293 | num_connectors = get_connectors_for_crtc(crtc, NULL, 0); | |
294 | BUG_ON(num_connectors == 0); | |
295 | connector_list = kzalloc(num_connectors * sizeof(*connector_list), | |
296 | GFP_KERNEL); | |
297 | if (!connector_list) | |
298 | return -ENOMEM; | |
299 | get_connectors_for_crtc(crtc, connector_list, num_connectors); | |
300 | ||
301 | set.connectors = connector_list; | |
302 | set.num_connectors = num_connectors; | |
303 | ||
304 | /* | |
0fe27f06 | 305 | * We call set_config() directly here rather than using |
c103d1cf MR |
306 | * drm_mode_set_config_internal. We're reprogramming the same |
307 | * connectors that were already in use, so we shouldn't need the extra | |
308 | * cross-CRTC fb refcounting to accomodate stealing connectors. | |
309 | * drm_mode_setplane() already handles the basic refcounting for the | |
310 | * framebuffers involved in this operation. | |
311 | */ | |
c103d1cf | 312 | ret = crtc->funcs->set_config(&set); |
c103d1cf MR |
313 | |
314 | kfree(connector_list); | |
315 | return ret; | |
316 | } | |
317 | EXPORT_SYMBOL(drm_primary_helper_update); | |
318 | ||
319 | /** | |
320 | * drm_primary_helper_disable() - Helper for primary plane disable | |
321 | * @plane: plane to disable | |
322 | * | |
323 | * Provides a default plane disable handler for primary planes. This is handler | |
324 | * is called in response to a userspace SetPlane operation on the plane with a | |
b6ccd7b9 DV |
325 | * NULL framebuffer parameter. It unconditionally fails the disable call with |
326 | * -EINVAL the only way to disable the primary plane without driver support is | |
327 | * to disable the entier CRTC. Which does not match the plane ->disable hook. | |
c103d1cf MR |
328 | * |
329 | * Note that some hardware may be able to disable the primary plane without | |
330 | * disabling the whole CRTC. Drivers for such hardware should provide their | |
331 | * own disable handler that disables just the primary plane (and they'll likely | |
332 | * need to provide their own update handler as well to properly re-enable a | |
333 | * disabled primary plane). | |
334 | * | |
335 | * RETURNS: | |
b6ccd7b9 | 336 | * Unconditionally returns -EINVAL. |
c103d1cf MR |
337 | */ |
338 | int drm_primary_helper_disable(struct drm_plane *plane) | |
339 | { | |
b6ccd7b9 | 340 | return -EINVAL; |
c103d1cf MR |
341 | } |
342 | EXPORT_SYMBOL(drm_primary_helper_disable); | |
343 | ||
344 | /** | |
345 | * drm_primary_helper_destroy() - Helper for primary plane destruction | |
346 | * @plane: plane to destroy | |
347 | * | |
348 | * Provides a default plane destroy handler for primary planes. This handler | |
349 | * is called during CRTC destruction. We disable the primary plane, remove | |
350 | * it from the DRM plane list, and deallocate the plane structure. | |
351 | */ | |
352 | void drm_primary_helper_destroy(struct drm_plane *plane) | |
353 | { | |
c103d1cf MR |
354 | drm_plane_cleanup(plane); |
355 | kfree(plane); | |
356 | } | |
357 | EXPORT_SYMBOL(drm_primary_helper_destroy); | |
358 | ||
359 | const struct drm_plane_funcs drm_primary_helper_funcs = { | |
360 | .update_plane = drm_primary_helper_update, | |
361 | .disable_plane = drm_primary_helper_disable, | |
362 | .destroy = drm_primary_helper_destroy, | |
363 | }; | |
364 | EXPORT_SYMBOL(drm_primary_helper_funcs); | |
365 | ||
3461b30b | 366 | static struct drm_plane *create_primary_plane(struct drm_device *dev) |
c103d1cf MR |
367 | { |
368 | struct drm_plane *primary; | |
369 | int ret; | |
370 | ||
371 | primary = kzalloc(sizeof(*primary), GFP_KERNEL); | |
372 | if (primary == NULL) { | |
373 | DRM_DEBUG_KMS("Failed to allocate primary plane\n"); | |
374 | return NULL; | |
375 | } | |
376 | ||
967667fd DV |
377 | /* |
378 | * Remove the format_default field from drm_plane when dropping | |
379 | * this helper. | |
380 | */ | |
381 | primary->format_default = true; | |
382 | ||
c103d1cf | 383 | /* possible_crtc's will be filled in later by crtc_init */ |
3281cc7e MR |
384 | ret = drm_universal_plane_init(dev, primary, 0, |
385 | &drm_primary_helper_funcs, | |
3461b30b DV |
386 | safe_modeset_formats, |
387 | ARRAY_SIZE(safe_modeset_formats), | |
b0b3b795 | 388 | DRM_PLANE_TYPE_PRIMARY, NULL); |
c103d1cf MR |
389 | if (ret) { |
390 | kfree(primary); | |
391 | primary = NULL; | |
392 | } | |
393 | ||
394 | return primary; | |
395 | } | |
c103d1cf | 396 | |
e13161af MR |
397 | /** |
398 | * drm_crtc_init - Legacy CRTC initialization function | |
399 | * @dev: DRM device | |
400 | * @crtc: CRTC object to init | |
401 | * @funcs: callbacks for the new CRTC | |
402 | * | |
403 | * Initialize a CRTC object with a default helper-provided primary plane and no | |
404 | * cursor plane. | |
405 | * | |
406 | * Returns: | |
407 | * Zero on success, error code on failure. | |
408 | */ | |
409 | int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc, | |
410 | const struct drm_crtc_funcs *funcs) | |
411 | { | |
412 | struct drm_plane *primary; | |
413 | ||
3461b30b | 414 | primary = create_primary_plane(dev); |
f9882876 VS |
415 | return drm_crtc_init_with_planes(dev, crtc, primary, NULL, funcs, |
416 | NULL); | |
e13161af MR |
417 | } |
418 | EXPORT_SYMBOL(drm_crtc_init); | |
acf24a39 | 419 | |
2f324b42 DV |
420 | int drm_plane_helper_commit(struct drm_plane *plane, |
421 | struct drm_plane_state *plane_state, | |
422 | struct drm_framebuffer *old_fb) | |
acf24a39 | 423 | { |
be26a66d | 424 | const struct drm_plane_helper_funcs *plane_funcs; |
acf24a39 | 425 | struct drm_crtc *crtc[2]; |
be26a66d | 426 | const struct drm_crtc_helper_funcs *crtc_funcs[2]; |
acf24a39 DV |
427 | int i, ret = 0; |
428 | ||
429 | plane_funcs = plane->helper_private; | |
430 | ||
431 | /* Since this is a transitional helper we can't assume that plane->state | |
432 | * is always valid. Hence we need to use plane->crtc instead of | |
433 | * plane->state->crtc as the old crtc. */ | |
434 | crtc[0] = plane->crtc; | |
435 | crtc[1] = crtc[0] != plane_state->crtc ? plane_state->crtc : NULL; | |
436 | ||
437 | for (i = 0; i < 2; i++) | |
438 | crtc_funcs[i] = crtc[i] ? crtc[i]->helper_private : NULL; | |
439 | ||
440 | if (plane_funcs->atomic_check) { | |
441 | ret = plane_funcs->atomic_check(plane, plane_state); | |
442 | if (ret) | |
443 | goto out; | |
444 | } | |
445 | ||
92890583 MR |
446 | if (plane_funcs->prepare_fb && plane_state->fb && |
447 | plane_state->fb != old_fb) { | |
844f9111 | 448 | ret = plane_funcs->prepare_fb(plane, |
d136dfee | 449 | plane_state); |
acf24a39 DV |
450 | if (ret) |
451 | goto out; | |
452 | } | |
453 | ||
454 | /* Point of no return, commit sw state. */ | |
455 | swap(plane->state, plane_state); | |
456 | ||
457 | for (i = 0; i < 2; i++) { | |
458 | if (crtc_funcs[i] && crtc_funcs[i]->atomic_begin) | |
613d2b27 | 459 | crtc_funcs[i]->atomic_begin(crtc[i], crtc[i]->state); |
acf24a39 DV |
460 | } |
461 | ||
407b8bd9 TR |
462 | /* |
463 | * Drivers may optionally implement the ->atomic_disable callback, so | |
464 | * special-case that here. | |
465 | */ | |
466 | if (drm_atomic_plane_disabling(plane, plane_state) && | |
467 | plane_funcs->atomic_disable) | |
468 | plane_funcs->atomic_disable(plane, plane_state); | |
469 | else | |
470 | plane_funcs->atomic_update(plane, plane_state); | |
acf24a39 DV |
471 | |
472 | for (i = 0; i < 2; i++) { | |
473 | if (crtc_funcs[i] && crtc_funcs[i]->atomic_flush) | |
613d2b27 | 474 | crtc_funcs[i]->atomic_flush(crtc[i], crtc[i]->state); |
acf24a39 DV |
475 | } |
476 | ||
92890583 MR |
477 | /* |
478 | * If we only moved the plane and didn't change fb's, there's no need to | |
479 | * wait for vblank. | |
480 | */ | |
481 | if (plane->state->fb == old_fb) | |
482 | goto out; | |
483 | ||
acf24a39 DV |
484 | for (i = 0; i < 2; i++) { |
485 | if (!crtc[i]) | |
486 | continue; | |
487 | ||
2e7f43c4 DV |
488 | if (crtc[i]->cursor == plane) |
489 | continue; | |
490 | ||
acf24a39 DV |
491 | /* There's no other way to figure out whether the crtc is running. */ |
492 | ret = drm_crtc_vblank_get(crtc[i]); | |
493 | if (ret == 0) { | |
494 | drm_crtc_wait_one_vblank(crtc[i]); | |
495 | drm_crtc_vblank_put(crtc[i]); | |
496 | } | |
497 | ||
498 | ret = 0; | |
499 | } | |
500 | ||
844f9111 ML |
501 | if (plane_funcs->cleanup_fb) |
502 | plane_funcs->cleanup_fb(plane, plane_state); | |
acf24a39 DV |
503 | out: |
504 | if (plane_state) { | |
505 | if (plane->funcs->atomic_destroy_state) | |
506 | plane->funcs->atomic_destroy_state(plane, plane_state); | |
507 | else | |
321ebf04 | 508 | drm_atomic_helper_plane_destroy_state(plane, plane_state); |
acf24a39 DV |
509 | } |
510 | ||
511 | return ret; | |
512 | } | |
513 | ||
514 | /** | |
6a425c2a | 515 | * drm_plane_helper_update() - Transitional helper for plane update |
acf24a39 DV |
516 | * @plane: plane object to update |
517 | * @crtc: owning CRTC of owning plane | |
518 | * @fb: framebuffer to flip onto plane | |
519 | * @crtc_x: x offset of primary plane on crtc | |
520 | * @crtc_y: y offset of primary plane on crtc | |
521 | * @crtc_w: width of primary plane rectangle on crtc | |
522 | * @crtc_h: height of primary plane rectangle on crtc | |
523 | * @src_x: x offset of @fb for panning | |
524 | * @src_y: y offset of @fb for panning | |
525 | * @src_w: width of source rectangle in @fb | |
526 | * @src_h: height of source rectangle in @fb | |
527 | * | |
528 | * Provides a default plane update handler using the atomic plane update | |
529 | * functions. It is fully left to the driver to check plane constraints and | |
530 | * handle corner-cases like a fully occluded or otherwise invisible plane. | |
531 | * | |
532 | * This is useful for piecewise transitioning of a driver to the atomic helpers. | |
533 | * | |
534 | * RETURNS: | |
535 | * Zero on success, error code on failure | |
536 | */ | |
537 | int drm_plane_helper_update(struct drm_plane *plane, struct drm_crtc *crtc, | |
538 | struct drm_framebuffer *fb, | |
539 | int crtc_x, int crtc_y, | |
540 | unsigned int crtc_w, unsigned int crtc_h, | |
541 | uint32_t src_x, uint32_t src_y, | |
542 | uint32_t src_w, uint32_t src_h) | |
543 | { | |
544 | struct drm_plane_state *plane_state; | |
545 | ||
546 | if (plane->funcs->atomic_duplicate_state) | |
547 | plane_state = plane->funcs->atomic_duplicate_state(plane); | |
e4f31ad2 DV |
548 | else { |
549 | if (!plane->state) | |
550 | drm_atomic_helper_plane_reset(plane); | |
551 | ||
321ebf04 | 552 | plane_state = drm_atomic_helper_plane_duplicate_state(plane); |
e4f31ad2 | 553 | } |
acf24a39 DV |
554 | if (!plane_state) |
555 | return -ENOMEM; | |
07cc0ef6 | 556 | plane_state->plane = plane; |
acf24a39 DV |
557 | |
558 | plane_state->crtc = crtc; | |
321ebf04 | 559 | drm_atomic_set_fb_for_plane(plane_state, fb); |
acf24a39 DV |
560 | plane_state->crtc_x = crtc_x; |
561 | plane_state->crtc_y = crtc_y; | |
562 | plane_state->crtc_h = crtc_h; | |
563 | plane_state->crtc_w = crtc_w; | |
564 | plane_state->src_x = src_x; | |
565 | plane_state->src_y = src_y; | |
566 | plane_state->src_h = src_h; | |
567 | plane_state->src_w = src_w; | |
568 | ||
2f324b42 | 569 | return drm_plane_helper_commit(plane, plane_state, plane->fb); |
acf24a39 DV |
570 | } |
571 | EXPORT_SYMBOL(drm_plane_helper_update); | |
572 | ||
573 | /** | |
6a425c2a | 574 | * drm_plane_helper_disable() - Transitional helper for plane disable |
acf24a39 DV |
575 | * @plane: plane to disable |
576 | * | |
577 | * Provides a default plane disable handler using the atomic plane update | |
578 | * functions. It is fully left to the driver to check plane constraints and | |
579 | * handle corner-cases like a fully occluded or otherwise invisible plane. | |
580 | * | |
581 | * This is useful for piecewise transitioning of a driver to the atomic helpers. | |
582 | * | |
583 | * RETURNS: | |
584 | * Zero on success, error code on failure | |
585 | */ | |
586 | int drm_plane_helper_disable(struct drm_plane *plane) | |
587 | { | |
588 | struct drm_plane_state *plane_state; | |
589 | ||
590 | /* crtc helpers love to call disable functions for already disabled hw | |
591 | * functions. So cope with that. */ | |
592 | if (!plane->crtc) | |
593 | return 0; | |
594 | ||
595 | if (plane->funcs->atomic_duplicate_state) | |
596 | plane_state = plane->funcs->atomic_duplicate_state(plane); | |
e4f31ad2 DV |
597 | else { |
598 | if (!plane->state) | |
599 | drm_atomic_helper_plane_reset(plane); | |
600 | ||
321ebf04 | 601 | plane_state = drm_atomic_helper_plane_duplicate_state(plane); |
e4f31ad2 | 602 | } |
acf24a39 DV |
603 | if (!plane_state) |
604 | return -ENOMEM; | |
07cc0ef6 | 605 | plane_state->plane = plane; |
acf24a39 DV |
606 | |
607 | plane_state->crtc = NULL; | |
321ebf04 | 608 | drm_atomic_set_fb_for_plane(plane_state, NULL); |
acf24a39 | 609 | |
2f324b42 | 610 | return drm_plane_helper_commit(plane, plane_state, plane->fb); |
acf24a39 DV |
611 | } |
612 | EXPORT_SYMBOL(drm_plane_helper_disable); |