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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> |
9338203c | 32 | #include <drm/drm_encoder.h> |
321ebf04 | 33 | #include <drm/drm_atomic_helper.h> |
c103d1cf MR |
34 | |
35 | #define SUBPIXEL_MASK 0xffff | |
36 | ||
3150c7d0 DV |
37 | /** |
38 | * DOC: overview | |
39 | * | |
40 | * This helper library has two parts. The first part has support to implement | |
41 | * primary plane support on top of the normal CRTC configuration interface. | |
6806cdf9 DV |
42 | * Since the legacy &drm_mode_config_funcs.set_config interface ties the primary |
43 | * plane together with the CRTC state this does not allow userspace to disable | |
44 | * the primary plane itself. To avoid too much duplicated code use | |
3150c7d0 DV |
45 | * drm_plane_helper_check_update() which can be used to enforce the same |
46 | * restrictions as primary planes had thus. The default primary plane only | |
47 | * expose XRBG8888 and ARGB8888 as valid pixel formats for the attached | |
48 | * framebuffer. | |
49 | * | |
50 | * Drivers are highly recommended to implement proper support for primary | |
51 | * planes, and newly merged drivers must not rely upon these transitional | |
52 | * helpers. | |
53 | * | |
54 | * The second part also implements transitional helpers which allow drivers to | |
55 | * gradually switch to the atomic helper infrastructure for plane updates. Once | |
56 | * that switch is complete drivers shouldn't use these any longer, instead using | |
57 | * the proper legacy implementations for update and disable plane hooks provided | |
58 | * by the atomic helpers. | |
59 | * | |
60 | * Again drivers are strongly urged to switch to the new interfaces. | |
092d01da DV |
61 | * |
62 | * The plane helpers share the function table structures with other helpers, | |
ea0dd85a | 63 | * specifically also the atomic helpers. See &struct drm_plane_helper_funcs for |
092d01da | 64 | * the details. |
3150c7d0 DV |
65 | */ |
66 | ||
c103d1cf MR |
67 | /* |
68 | * Returns the connectors currently associated with a CRTC. This function | |
69 | * should be called twice: once with a NULL connector list to retrieve | |
70 | * the list size, and once with the properly allocated list to be filled in. | |
71 | */ | |
72 | static int get_connectors_for_crtc(struct drm_crtc *crtc, | |
73 | struct drm_connector **connector_list, | |
74 | int num_connectors) | |
75 | { | |
76 | struct drm_device *dev = crtc->dev; | |
77 | struct drm_connector *connector; | |
c36a3254 | 78 | struct drm_connector_list_iter conn_iter; |
c103d1cf MR |
79 | int count = 0; |
80 | ||
6e9f798d DV |
81 | /* |
82 | * Note: Once we change the plane hooks to more fine-grained locking we | |
83 | * need to grab the connection_mutex here to be able to make these | |
84 | * checks. | |
85 | */ | |
51fd371b | 86 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
6e9f798d | 87 | |
b982dab1 | 88 | drm_connector_list_iter_begin(dev, &conn_iter); |
c36a3254 | 89 | drm_for_each_connector_iter(connector, &conn_iter) { |
c103d1cf MR |
90 | if (connector->encoder && connector->encoder->crtc == crtc) { |
91 | if (connector_list != NULL && count < num_connectors) | |
92 | *(connector_list++) = connector; | |
93 | ||
94 | count++; | |
95 | } | |
9a9f5ce8 | 96 | } |
b982dab1 | 97 | drm_connector_list_iter_end(&conn_iter); |
c103d1cf MR |
98 | |
99 | return count; | |
100 | } | |
101 | ||
7daf8d54 | 102 | /** |
df86af91 VS |
103 | * drm_plane_helper_check_state() - Check plane state for validity |
104 | * @state: plane state to check | |
7daf8d54 MR |
105 | * @clip: integer clipping coordinates |
106 | * @min_scale: minimum @src:@dest scaling factor in 16.16 fixed point | |
107 | * @max_scale: maximum @src:@dest scaling factor in 16.16 fixed point | |
108 | * @can_position: is it legal to position the plane such that it | |
109 | * doesn't cover the entire crtc? This will generally | |
110 | * only be false for primary planes. | |
111 | * @can_update_disabled: can the plane be updated while the crtc | |
112 | * is disabled? | |
7daf8d54 | 113 | * |
df86af91 VS |
114 | * Checks that a desired plane update is valid, and updates various |
115 | * bits of derived state (clipped coordinates etc.). Drivers that provide | |
7daf8d54 MR |
116 | * their own plane handling rather than helper-provided implementations may |
117 | * still wish to call this function to avoid duplication of error checking | |
118 | * code. | |
119 | * | |
120 | * RETURNS: | |
121 | * Zero if update appears valid, error code on failure | |
122 | */ | |
df86af91 VS |
123 | int drm_plane_helper_check_state(struct drm_plane_state *state, |
124 | const struct drm_rect *clip, | |
125 | int min_scale, | |
126 | int max_scale, | |
127 | bool can_position, | |
128 | bool can_update_disabled) | |
7daf8d54 | 129 | { |
df86af91 VS |
130 | struct drm_crtc *crtc = state->crtc; |
131 | struct drm_framebuffer *fb = state->fb; | |
132 | struct drm_rect *src = &state->src; | |
133 | struct drm_rect *dst = &state->dst; | |
134 | unsigned int rotation = state->rotation; | |
7daf8d54 MR |
135 | int hscale, vscale; |
136 | ||
1638d30c RC |
137 | *src = drm_plane_state_src(state); |
138 | *dst = drm_plane_state_dest(state); | |
df86af91 | 139 | |
7432ca5a | 140 | if (!fb) { |
df86af91 | 141 | state->visible = false; |
7432ca5a MR |
142 | return 0; |
143 | } | |
144 | ||
145 | /* crtc should only be NULL when disabling (i.e., !fb) */ | |
146 | if (WARN_ON(!crtc)) { | |
df86af91 | 147 | state->visible = false; |
7432ca5a MR |
148 | return 0; |
149 | } | |
150 | ||
7daf8d54 MR |
151 | if (!crtc->enabled && !can_update_disabled) { |
152 | DRM_DEBUG_KMS("Cannot update plane of a disabled CRTC.\n"); | |
153 | return -EINVAL; | |
154 | } | |
155 | ||
9b8b013d VS |
156 | drm_rect_rotate(src, fb->width << 16, fb->height << 16, rotation); |
157 | ||
7daf8d54 | 158 | /* Check scaling */ |
df86af91 VS |
159 | hscale = drm_rect_calc_hscale(src, dst, min_scale, max_scale); |
160 | vscale = drm_rect_calc_vscale(src, dst, min_scale, max_scale); | |
7daf8d54 MR |
161 | if (hscale < 0 || vscale < 0) { |
162 | DRM_DEBUG_KMS("Invalid scaling of plane\n"); | |
df86af91 VS |
163 | drm_rect_debug_print("src: ", &state->src, true); |
164 | drm_rect_debug_print("dst: ", &state->dst, false); | |
7daf8d54 MR |
165 | return -ERANGE; |
166 | } | |
167 | ||
df86af91 | 168 | state->visible = drm_rect_clip_scaled(src, dst, clip, hscale, vscale); |
9b8b013d VS |
169 | |
170 | drm_rect_rotate_inv(src, fb->width << 16, fb->height << 16, rotation); | |
171 | ||
df86af91 | 172 | if (!state->visible) |
7daf8d54 MR |
173 | /* |
174 | * Plane isn't visible; some drivers can handle this | |
175 | * so we just return success here. Drivers that can't | |
176 | * (including those that use the primary plane helper's | |
177 | * update function) will return an error from their | |
178 | * update_plane handler. | |
179 | */ | |
180 | return 0; | |
181 | ||
df86af91 | 182 | if (!can_position && !drm_rect_equals(dst, clip)) { |
7daf8d54 | 183 | DRM_DEBUG_KMS("Plane must cover entire CRTC\n"); |
df86af91 | 184 | drm_rect_debug_print("dst: ", dst, false); |
f980a71a | 185 | drm_rect_debug_print("clip: ", clip, false); |
7daf8d54 MR |
186 | return -EINVAL; |
187 | } | |
188 | ||
189 | return 0; | |
190 | } | |
df86af91 VS |
191 | EXPORT_SYMBOL(drm_plane_helper_check_state); |
192 | ||
193 | /** | |
194 | * drm_plane_helper_check_update() - Check plane update for validity | |
195 | * @plane: plane object to update | |
196 | * @crtc: owning CRTC of owning plane | |
197 | * @fb: framebuffer to flip onto plane | |
198 | * @src: source coordinates in 16.16 fixed point | |
5ee4c8f0 | 199 | * @dst: integer destination coordinates |
df86af91 VS |
200 | * @clip: integer clipping coordinates |
201 | * @rotation: plane rotation | |
202 | * @min_scale: minimum @src:@dest scaling factor in 16.16 fixed point | |
203 | * @max_scale: maximum @src:@dest scaling factor in 16.16 fixed point | |
204 | * @can_position: is it legal to position the plane such that it | |
205 | * doesn't cover the entire crtc? This will generally | |
206 | * only be false for primary planes. | |
207 | * @can_update_disabled: can the plane be updated while the crtc | |
208 | * is disabled? | |
209 | * @visible: output parameter indicating whether plane is still visible after | |
210 | * clipping | |
211 | * | |
212 | * Checks that a desired plane update is valid. Drivers that provide | |
213 | * their own plane handling rather than helper-provided implementations may | |
214 | * still wish to call this function to avoid duplication of error checking | |
215 | * code. | |
216 | * | |
217 | * RETURNS: | |
218 | * Zero if update appears valid, error code on failure | |
219 | */ | |
220 | int drm_plane_helper_check_update(struct drm_plane *plane, | |
221 | struct drm_crtc *crtc, | |
222 | struct drm_framebuffer *fb, | |
223 | struct drm_rect *src, | |
224 | struct drm_rect *dst, | |
225 | const struct drm_rect *clip, | |
226 | unsigned int rotation, | |
227 | int min_scale, | |
228 | int max_scale, | |
229 | bool can_position, | |
230 | bool can_update_disabled, | |
231 | bool *visible) | |
232 | { | |
233 | struct drm_plane_state state = { | |
234 | .plane = plane, | |
235 | .crtc = crtc, | |
236 | .fb = fb, | |
237 | .src_x = src->x1, | |
238 | .src_y = src->y1, | |
239 | .src_w = drm_rect_width(src), | |
240 | .src_h = drm_rect_height(src), | |
241 | .crtc_x = dst->x1, | |
242 | .crtc_y = dst->y1, | |
243 | .crtc_w = drm_rect_width(dst), | |
244 | .crtc_h = drm_rect_height(dst), | |
245 | .rotation = rotation, | |
246 | .visible = *visible, | |
247 | }; | |
248 | int ret; | |
249 | ||
250 | ret = drm_plane_helper_check_state(&state, clip, | |
251 | min_scale, max_scale, | |
252 | can_position, | |
253 | can_update_disabled); | |
254 | if (ret) | |
255 | return ret; | |
256 | ||
257 | *src = state.src; | |
258 | *dst = state.dst; | |
259 | *visible = state.visible; | |
260 | ||
261 | return 0; | |
262 | } | |
7daf8d54 MR |
263 | EXPORT_SYMBOL(drm_plane_helper_check_update); |
264 | ||
c103d1cf MR |
265 | /** |
266 | * drm_primary_helper_update() - Helper for primary plane update | |
267 | * @plane: plane object to update | |
268 | * @crtc: owning CRTC of owning plane | |
269 | * @fb: framebuffer to flip onto plane | |
270 | * @crtc_x: x offset of primary plane on crtc | |
271 | * @crtc_y: y offset of primary plane on crtc | |
272 | * @crtc_w: width of primary plane rectangle on crtc | |
273 | * @crtc_h: height of primary plane rectangle on crtc | |
274 | * @src_x: x offset of @fb for panning | |
275 | * @src_y: y offset of @fb for panning | |
276 | * @src_w: width of source rectangle in @fb | |
277 | * @src_h: height of source rectangle in @fb | |
34a2ab5e | 278 | * @ctx: lock acquire context, not used here |
c103d1cf MR |
279 | * |
280 | * Provides a default plane update handler for primary planes. This is handler | |
281 | * is called in response to a userspace SetPlane operation on the plane with a | |
282 | * non-NULL framebuffer. We call the driver's modeset handler to update the | |
283 | * framebuffer. | |
284 | * | |
285 | * SetPlane() on a primary plane of a disabled CRTC is not supported, and will | |
286 | * return an error. | |
287 | * | |
288 | * Note that we make some assumptions about hardware limitations that may not be | |
289 | * true for all hardware -- | |
2e7a5701 DV |
290 | * |
291 | * 1. Primary plane cannot be repositioned. | |
292 | * 2. Primary plane cannot be scaled. | |
293 | * 3. Primary plane must cover the entire CRTC. | |
294 | * 4. Subpixel positioning is not supported. | |
295 | * | |
c103d1cf MR |
296 | * Drivers for hardware that don't have these restrictions can provide their |
297 | * own implementation rather than using this helper. | |
298 | * | |
299 | * RETURNS: | |
300 | * Zero on success, error code on failure | |
301 | */ | |
302 | int drm_primary_helper_update(struct drm_plane *plane, struct drm_crtc *crtc, | |
303 | struct drm_framebuffer *fb, | |
304 | int crtc_x, int crtc_y, | |
305 | unsigned int crtc_w, unsigned int crtc_h, | |
306 | uint32_t src_x, uint32_t src_y, | |
34a2ab5e DV |
307 | uint32_t src_w, uint32_t src_h, |
308 | struct drm_modeset_acquire_ctx *ctx) | |
c103d1cf MR |
309 | { |
310 | struct drm_mode_set set = { | |
311 | .crtc = crtc, | |
312 | .fb = fb, | |
313 | .mode = &crtc->mode, | |
314 | .x = src_x >> 16, | |
315 | .y = src_y >> 16, | |
316 | }; | |
7daf8d54 MR |
317 | struct drm_rect src = { |
318 | .x1 = src_x, | |
319 | .y1 = src_y, | |
320 | .x2 = src_x + src_w, | |
321 | .y2 = src_y + src_h, | |
322 | }; | |
c103d1cf MR |
323 | struct drm_rect dest = { |
324 | .x1 = crtc_x, | |
325 | .y1 = crtc_y, | |
326 | .x2 = crtc_x + crtc_w, | |
327 | .y2 = crtc_y + crtc_h, | |
328 | }; | |
7daf8d54 | 329 | const struct drm_rect clip = { |
c103d1cf MR |
330 | .x2 = crtc->mode.hdisplay, |
331 | .y2 = crtc->mode.vdisplay, | |
332 | }; | |
333 | struct drm_connector **connector_list; | |
c103d1cf | 334 | int num_connectors, ret; |
7daf8d54 | 335 | bool visible; |
c103d1cf | 336 | |
7daf8d54 MR |
337 | ret = drm_plane_helper_check_update(plane, crtc, fb, |
338 | &src, &dest, &clip, | |
c2c446ad | 339 | DRM_MODE_ROTATE_0, |
7daf8d54 MR |
340 | DRM_PLANE_HELPER_NO_SCALING, |
341 | DRM_PLANE_HELPER_NO_SCALING, | |
342 | false, false, &visible); | |
c103d1cf MR |
343 | if (ret) |
344 | return ret; | |
345 | ||
7daf8d54 MR |
346 | if (!visible) |
347 | /* | |
348 | * Primary plane isn't visible. Note that unless a driver | |
349 | * provides their own disable function, this will just | |
350 | * wind up returning -EINVAL to userspace. | |
351 | */ | |
19315294 | 352 | return plane->funcs->disable_plane(plane, ctx); |
7daf8d54 | 353 | |
c103d1cf MR |
354 | /* Find current connectors for CRTC */ |
355 | num_connectors = get_connectors_for_crtc(crtc, NULL, 0); | |
356 | BUG_ON(num_connectors == 0); | |
357 | connector_list = kzalloc(num_connectors * sizeof(*connector_list), | |
358 | GFP_KERNEL); | |
359 | if (!connector_list) | |
360 | return -ENOMEM; | |
361 | get_connectors_for_crtc(crtc, connector_list, num_connectors); | |
362 | ||
363 | set.connectors = connector_list; | |
364 | set.num_connectors = num_connectors; | |
365 | ||
366 | /* | |
0fe27f06 | 367 | * We call set_config() directly here rather than using |
c103d1cf MR |
368 | * drm_mode_set_config_internal. We're reprogramming the same |
369 | * connectors that were already in use, so we shouldn't need the extra | |
370 | * cross-CRTC fb refcounting to accomodate stealing connectors. | |
371 | * drm_mode_setplane() already handles the basic refcounting for the | |
372 | * framebuffers involved in this operation. | |
373 | */ | |
a4eff9aa | 374 | ret = crtc->funcs->set_config(&set, ctx); |
c103d1cf MR |
375 | |
376 | kfree(connector_list); | |
377 | return ret; | |
378 | } | |
379 | EXPORT_SYMBOL(drm_primary_helper_update); | |
380 | ||
381 | /** | |
382 | * drm_primary_helper_disable() - Helper for primary plane disable | |
383 | * @plane: plane to disable | |
3a753b9e | 384 | * @ctx: lock acquire context, not used here |
c103d1cf MR |
385 | * |
386 | * Provides a default plane disable handler for primary planes. This is handler | |
387 | * is called in response to a userspace SetPlane operation on the plane with a | |
b6ccd7b9 DV |
388 | * NULL framebuffer parameter. It unconditionally fails the disable call with |
389 | * -EINVAL the only way to disable the primary plane without driver support is | |
6806cdf9 DV |
390 | * to disable the entire CRTC. Which does not match the plane |
391 | * &drm_plane_funcs.disable_plane hook. | |
c103d1cf MR |
392 | * |
393 | * Note that some hardware may be able to disable the primary plane without | |
394 | * disabling the whole CRTC. Drivers for such hardware should provide their | |
395 | * own disable handler that disables just the primary plane (and they'll likely | |
396 | * need to provide their own update handler as well to properly re-enable a | |
397 | * disabled primary plane). | |
398 | * | |
399 | * RETURNS: | |
b6ccd7b9 | 400 | * Unconditionally returns -EINVAL. |
c103d1cf | 401 | */ |
19315294 DV |
402 | int drm_primary_helper_disable(struct drm_plane *plane, |
403 | struct drm_modeset_acquire_ctx *ctx) | |
c103d1cf | 404 | { |
b6ccd7b9 | 405 | return -EINVAL; |
c103d1cf MR |
406 | } |
407 | EXPORT_SYMBOL(drm_primary_helper_disable); | |
408 | ||
409 | /** | |
410 | * drm_primary_helper_destroy() - Helper for primary plane destruction | |
411 | * @plane: plane to destroy | |
412 | * | |
413 | * Provides a default plane destroy handler for primary planes. This handler | |
414 | * is called during CRTC destruction. We disable the primary plane, remove | |
415 | * it from the DRM plane list, and deallocate the plane structure. | |
416 | */ | |
417 | void drm_primary_helper_destroy(struct drm_plane *plane) | |
418 | { | |
c103d1cf MR |
419 | drm_plane_cleanup(plane); |
420 | kfree(plane); | |
421 | } | |
422 | EXPORT_SYMBOL(drm_primary_helper_destroy); | |
423 | ||
424 | const struct drm_plane_funcs drm_primary_helper_funcs = { | |
425 | .update_plane = drm_primary_helper_update, | |
426 | .disable_plane = drm_primary_helper_disable, | |
427 | .destroy = drm_primary_helper_destroy, | |
428 | }; | |
429 | EXPORT_SYMBOL(drm_primary_helper_funcs); | |
430 | ||
2f324b42 DV |
431 | int drm_plane_helper_commit(struct drm_plane *plane, |
432 | struct drm_plane_state *plane_state, | |
433 | struct drm_framebuffer *old_fb) | |
acf24a39 | 434 | { |
be26a66d | 435 | const struct drm_plane_helper_funcs *plane_funcs; |
acf24a39 | 436 | struct drm_crtc *crtc[2]; |
be26a66d | 437 | const struct drm_crtc_helper_funcs *crtc_funcs[2]; |
acf24a39 DV |
438 | int i, ret = 0; |
439 | ||
440 | plane_funcs = plane->helper_private; | |
441 | ||
442 | /* Since this is a transitional helper we can't assume that plane->state | |
443 | * is always valid. Hence we need to use plane->crtc instead of | |
444 | * plane->state->crtc as the old crtc. */ | |
445 | crtc[0] = plane->crtc; | |
446 | crtc[1] = crtc[0] != plane_state->crtc ? plane_state->crtc : NULL; | |
447 | ||
448 | for (i = 0; i < 2; i++) | |
449 | crtc_funcs[i] = crtc[i] ? crtc[i]->helper_private : NULL; | |
450 | ||
451 | if (plane_funcs->atomic_check) { | |
452 | ret = plane_funcs->atomic_check(plane, plane_state); | |
453 | if (ret) | |
454 | goto out; | |
455 | } | |
456 | ||
cd252356 | 457 | if (plane_funcs->prepare_fb && plane_state->fb != old_fb) { |
844f9111 | 458 | ret = plane_funcs->prepare_fb(plane, |
d136dfee | 459 | plane_state); |
acf24a39 DV |
460 | if (ret) |
461 | goto out; | |
462 | } | |
463 | ||
464 | /* Point of no return, commit sw state. */ | |
465 | swap(plane->state, plane_state); | |
466 | ||
467 | for (i = 0; i < 2; i++) { | |
468 | if (crtc_funcs[i] && crtc_funcs[i]->atomic_begin) | |
613d2b27 | 469 | crtc_funcs[i]->atomic_begin(crtc[i], crtc[i]->state); |
acf24a39 DV |
470 | } |
471 | ||
407b8bd9 TR |
472 | /* |
473 | * Drivers may optionally implement the ->atomic_disable callback, so | |
474 | * special-case that here. | |
475 | */ | |
51ffa12d | 476 | if (drm_atomic_plane_disabling(plane_state, plane->state) && |
407b8bd9 TR |
477 | plane_funcs->atomic_disable) |
478 | plane_funcs->atomic_disable(plane, plane_state); | |
479 | else | |
480 | plane_funcs->atomic_update(plane, plane_state); | |
acf24a39 DV |
481 | |
482 | for (i = 0; i < 2; i++) { | |
483 | if (crtc_funcs[i] && crtc_funcs[i]->atomic_flush) | |
613d2b27 | 484 | crtc_funcs[i]->atomic_flush(crtc[i], crtc[i]->state); |
acf24a39 DV |
485 | } |
486 | ||
92890583 MR |
487 | /* |
488 | * If we only moved the plane and didn't change fb's, there's no need to | |
489 | * wait for vblank. | |
490 | */ | |
491 | if (plane->state->fb == old_fb) | |
492 | goto out; | |
493 | ||
acf24a39 DV |
494 | for (i = 0; i < 2; i++) { |
495 | if (!crtc[i]) | |
496 | continue; | |
497 | ||
2e7f43c4 DV |
498 | if (crtc[i]->cursor == plane) |
499 | continue; | |
500 | ||
acf24a39 DV |
501 | /* There's no other way to figure out whether the crtc is running. */ |
502 | ret = drm_crtc_vblank_get(crtc[i]); | |
503 | if (ret == 0) { | |
504 | drm_crtc_wait_one_vblank(crtc[i]); | |
505 | drm_crtc_vblank_put(crtc[i]); | |
506 | } | |
507 | ||
508 | ret = 0; | |
509 | } | |
510 | ||
844f9111 ML |
511 | if (plane_funcs->cleanup_fb) |
512 | plane_funcs->cleanup_fb(plane, plane_state); | |
acf24a39 | 513 | out: |
52b18e3a ID |
514 | if (plane->funcs->atomic_destroy_state) |
515 | plane->funcs->atomic_destroy_state(plane, plane_state); | |
516 | else | |
517 | drm_atomic_helper_plane_destroy_state(plane, plane_state); | |
acf24a39 DV |
518 | |
519 | return ret; | |
520 | } | |
521 | ||
522 | /** | |
6a425c2a | 523 | * drm_plane_helper_update() - Transitional helper for plane update |
acf24a39 DV |
524 | * @plane: plane object to update |
525 | * @crtc: owning CRTC of owning plane | |
526 | * @fb: framebuffer to flip onto plane | |
527 | * @crtc_x: x offset of primary plane on crtc | |
528 | * @crtc_y: y offset of primary plane on crtc | |
529 | * @crtc_w: width of primary plane rectangle on crtc | |
530 | * @crtc_h: height of primary plane rectangle on crtc | |
531 | * @src_x: x offset of @fb for panning | |
532 | * @src_y: y offset of @fb for panning | |
533 | * @src_w: width of source rectangle in @fb | |
534 | * @src_h: height of source rectangle in @fb | |
535 | * | |
536 | * Provides a default plane update handler using the atomic plane update | |
537 | * functions. It is fully left to the driver to check plane constraints and | |
538 | * handle corner-cases like a fully occluded or otherwise invisible plane. | |
539 | * | |
540 | * This is useful for piecewise transitioning of a driver to the atomic helpers. | |
541 | * | |
542 | * RETURNS: | |
543 | * Zero on success, error code on failure | |
544 | */ | |
545 | int drm_plane_helper_update(struct drm_plane *plane, struct drm_crtc *crtc, | |
546 | struct drm_framebuffer *fb, | |
547 | int crtc_x, int crtc_y, | |
548 | unsigned int crtc_w, unsigned int crtc_h, | |
549 | uint32_t src_x, uint32_t src_y, | |
550 | uint32_t src_w, uint32_t src_h) | |
551 | { | |
552 | struct drm_plane_state *plane_state; | |
553 | ||
554 | if (plane->funcs->atomic_duplicate_state) | |
555 | plane_state = plane->funcs->atomic_duplicate_state(plane); | |
e4f31ad2 DV |
556 | else { |
557 | if (!plane->state) | |
558 | drm_atomic_helper_plane_reset(plane); | |
559 | ||
321ebf04 | 560 | plane_state = drm_atomic_helper_plane_duplicate_state(plane); |
e4f31ad2 | 561 | } |
acf24a39 DV |
562 | if (!plane_state) |
563 | return -ENOMEM; | |
07cc0ef6 | 564 | plane_state->plane = plane; |
acf24a39 DV |
565 | |
566 | plane_state->crtc = crtc; | |
321ebf04 | 567 | drm_atomic_set_fb_for_plane(plane_state, fb); |
acf24a39 DV |
568 | plane_state->crtc_x = crtc_x; |
569 | plane_state->crtc_y = crtc_y; | |
570 | plane_state->crtc_h = crtc_h; | |
571 | plane_state->crtc_w = crtc_w; | |
572 | plane_state->src_x = src_x; | |
573 | plane_state->src_y = src_y; | |
574 | plane_state->src_h = src_h; | |
575 | plane_state->src_w = src_w; | |
576 | ||
2f324b42 | 577 | return drm_plane_helper_commit(plane, plane_state, plane->fb); |
acf24a39 DV |
578 | } |
579 | EXPORT_SYMBOL(drm_plane_helper_update); | |
580 | ||
581 | /** | |
6a425c2a | 582 | * drm_plane_helper_disable() - Transitional helper for plane disable |
acf24a39 DV |
583 | * @plane: plane to disable |
584 | * | |
585 | * Provides a default plane disable handler using the atomic plane update | |
586 | * functions. It is fully left to the driver to check plane constraints and | |
587 | * handle corner-cases like a fully occluded or otherwise invisible plane. | |
588 | * | |
589 | * This is useful for piecewise transitioning of a driver to the atomic helpers. | |
590 | * | |
591 | * RETURNS: | |
592 | * Zero on success, error code on failure | |
593 | */ | |
594 | int drm_plane_helper_disable(struct drm_plane *plane) | |
595 | { | |
596 | struct drm_plane_state *plane_state; | |
597 | ||
598 | /* crtc helpers love to call disable functions for already disabled hw | |
599 | * functions. So cope with that. */ | |
600 | if (!plane->crtc) | |
601 | return 0; | |
602 | ||
603 | if (plane->funcs->atomic_duplicate_state) | |
604 | plane_state = plane->funcs->atomic_duplicate_state(plane); | |
e4f31ad2 DV |
605 | else { |
606 | if (!plane->state) | |
607 | drm_atomic_helper_plane_reset(plane); | |
608 | ||
321ebf04 | 609 | plane_state = drm_atomic_helper_plane_duplicate_state(plane); |
e4f31ad2 | 610 | } |
acf24a39 DV |
611 | if (!plane_state) |
612 | return -ENOMEM; | |
07cc0ef6 | 613 | plane_state->plane = plane; |
acf24a39 DV |
614 | |
615 | plane_state->crtc = NULL; | |
321ebf04 | 616 | drm_atomic_set_fb_for_plane(plane_state, NULL); |
acf24a39 | 617 | |
2f324b42 | 618 | return drm_plane_helper_commit(plane, plane_state, plane->fb); |
acf24a39 DV |
619 | } |
620 | EXPORT_SYMBOL(drm_plane_helper_disable); |