1 /* 1 /*
2 * Copyright (C) 2014 Red Hat 2 * Copyright (C) 2014 Red Hat
3 * Copyright (C) 2014 Intel Corp. 3 * Copyright (C) 2014 Intel Corp.
4 * 4 *
5 * Permission is hereby granted, free of charg 5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated docume 6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction 7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, pub 8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to 9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to 10 * Software is furnished to do so, subject to the following conditions:
11 * 11 *
12 * The above copyright notice and this permiss 12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the S 13 * all copies or substantial portions of the Software.
14 * 14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT W 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE W 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINF 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIA 18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CO 19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20 * ARISING FROM, OUT OF OR IN CONNECTION WITH 20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21 * OTHER DEALINGS IN THE SOFTWARE. 21 * OTHER DEALINGS IN THE SOFTWARE.
22 * 22 *
23 * Authors: 23 * Authors:
24 * Rob Clark <robdclark@gmail.com> 24 * Rob Clark <robdclark@gmail.com>
25 * Daniel Vetter <daniel.vetter@ffwll.ch> 25 * Daniel Vetter <daniel.vetter@ffwll.ch>
26 */ 26 */
27 27
28 #ifndef DRM_ATOMIC_H_ 28 #ifndef DRM_ATOMIC_H_
29 #define DRM_ATOMIC_H_ 29 #define DRM_ATOMIC_H_
30 30
31 #include <drm/drm_crtc.h> 31 #include <drm/drm_crtc.h>
32 #include <drm/drm_util.h> 32 #include <drm/drm_util.h>
33 33
34 /** 34 /**
35 * struct drm_crtc_commit - track modeset comm 35 * struct drm_crtc_commit - track modeset commits on a CRTC
36 * 36 *
37 * This structure is used to track pending mod 37 * This structure is used to track pending modeset changes and atomic commit on
38 * a per-CRTC basis. Since updating the list s 38 * a per-CRTC basis. Since updating the list should never block, this structure
39 * is reference counted to allow waiters to sa 39 * is reference counted to allow waiters to safely wait on an event to complete,
40 * without holding any locks. 40 * without holding any locks.
41 * 41 *
42 * It has 3 different events in total to allow 42 * It has 3 different events in total to allow a fine-grained synchronization
43 * between outstanding updates:: 43 * between outstanding updates::
44 * 44 *
45 * atomic commit thread 45 * atomic commit thread hardware
46 * 46 *
47 * write new state into hardware ----> 47 * write new state into hardware ----> ...
48 * signal hw_done 48 * signal hw_done
49 * 49 * switch to new state on next
50 * ... 50 * ... v/hblank
51 * 51 *
52 * wait for buffers to show up 52 * wait for buffers to show up ...
53 * 53 *
54 * ... 54 * ... send completion irq
55 * 55 * irq handler signals flip_done
56 * cleanup old buffers 56 * cleanup old buffers
57 * 57 *
58 * signal cleanup_done 58 * signal cleanup_done
59 * 59 *
60 * wait for flip_done <---- 60 * wait for flip_done <----
61 * clean up atomic state 61 * clean up atomic state
62 * 62 *
63 * The important bit to know is that &cleanup_ 63 * The important bit to know is that &cleanup_done is the terminal event, but the
64 * ordering between &flip_done and &hw_done is 64 * ordering between &flip_done and &hw_done is entirely up to the specific driver
65 * and modeset state change. 65 * and modeset state change.
66 * 66 *
67 * For an implementation of how to use this lo 67 * For an implementation of how to use this look at
68 * drm_atomic_helper_setup_commit() from the a 68 * drm_atomic_helper_setup_commit() from the atomic helper library.
69 * 69 *
70 * See also drm_crtc_commit_wait(). 70 * See also drm_crtc_commit_wait().
71 */ 71 */
72 struct drm_crtc_commit { 72 struct drm_crtc_commit {
73 /** 73 /**
74 * @crtc: 74 * @crtc:
75 * 75 *
76 * DRM CRTC for this commit. 76 * DRM CRTC for this commit.
77 */ 77 */
78 struct drm_crtc *crtc; 78 struct drm_crtc *crtc;
79 79
80 /** 80 /**
81 * @ref: 81 * @ref:
82 * 82 *
83 * Reference count for this structure. 83 * Reference count for this structure. Needed to allow blocking on
84 * completions without the risk of the 84 * completions without the risk of the completion disappearing
85 * meanwhile. 85 * meanwhile.
86 */ 86 */
87 struct kref ref; 87 struct kref ref;
88 88
89 /** 89 /**
90 * @flip_done: 90 * @flip_done:
91 * 91 *
92 * Will be signaled when the hardware 92 * Will be signaled when the hardware has flipped to the new set of
93 * buffers. Signals at the same time a 93 * buffers. Signals at the same time as when the drm event for this
94 * commit is sent to userspace, or whe 94 * commit is sent to userspace, or when an out-fence is singalled. Note
95 * that for most hardware, in most cas 95 * that for most hardware, in most cases this happens after @hw_done is
96 * signalled. 96 * signalled.
97 * 97 *
98 * Completion of this stage is signall 98 * Completion of this stage is signalled implicitly by calling
99 * drm_crtc_send_vblank_event() on &dr 99 * drm_crtc_send_vblank_event() on &drm_crtc_state.event.
100 */ 100 */
101 struct completion flip_done; 101 struct completion flip_done;
102 102
103 /** 103 /**
104 * @hw_done: 104 * @hw_done:
105 * 105 *
106 * Will be signalled when all hw regis 106 * Will be signalled when all hw register changes for this commit have
107 * been written out. Especially when d 107 * been written out. Especially when disabling a pipe this can be much
108 * later than @flip_done, since that c 108 * later than @flip_done, since that can signal already when the
109 * screen goes black, whereas to fully 109 * screen goes black, whereas to fully shut down a pipe more register
110 * I/O is required. 110 * I/O is required.
111 * 111 *
112 * Note that this does not need to inc 112 * Note that this does not need to include separately reference-counted
113 * resources like backing storage buff 113 * resources like backing storage buffer pinning, or runtime pm
114 * management. 114 * management.
115 * 115 *
116 * Drivers should call drm_atomic_help 116 * Drivers should call drm_atomic_helper_commit_hw_done() to signal
117 * completion of this stage. 117 * completion of this stage.
118 */ 118 */
119 struct completion hw_done; 119 struct completion hw_done;
120 120
121 /** 121 /**
122 * @cleanup_done: 122 * @cleanup_done:
123 * 123 *
124 * Will be signalled after old buffers 124 * Will be signalled after old buffers have been cleaned up by calling
125 * drm_atomic_helper_cleanup_planes(). 125 * drm_atomic_helper_cleanup_planes(). Since this can only happen after
126 * a vblank wait completed it might be 126 * a vblank wait completed it might be a bit later. This completion is
127 * useful to throttle updates and avoi 127 * useful to throttle updates and avoid hardware updates getting ahead
128 * of the buffer cleanup too much. 128 * of the buffer cleanup too much.
129 * 129 *
130 * Drivers should call drm_atomic_help 130 * Drivers should call drm_atomic_helper_commit_cleanup_done() to signal
131 * completion of this stage. 131 * completion of this stage.
132 */ 132 */
133 struct completion cleanup_done; 133 struct completion cleanup_done;
134 134
135 /** 135 /**
136 * @commit_entry: 136 * @commit_entry:
137 * 137 *
138 * Entry on the per-CRTC &drm_crtc.com 138 * Entry on the per-CRTC &drm_crtc.commit_list. Protected by
139 * $drm_crtc.commit_lock. 139 * $drm_crtc.commit_lock.
140 */ 140 */
141 struct list_head commit_entry; 141 struct list_head commit_entry;
142 142
143 /** 143 /**
144 * @event: 144 * @event:
145 * 145 *
146 * &drm_pending_vblank_event pointer t 146 * &drm_pending_vblank_event pointer to clean up private events.
147 */ 147 */
148 struct drm_pending_vblank_event *event 148 struct drm_pending_vblank_event *event;
149 149
150 /** 150 /**
151 * @abort_completion: 151 * @abort_completion:
152 * 152 *
153 * A flag that's set after drm_atomic_ 153 * A flag that's set after drm_atomic_helper_setup_commit() takes a
154 * second reference for the completion 154 * second reference for the completion of $drm_crtc_state.event. It's
155 * used by the free code to remove the 155 * used by the free code to remove the second reference if commit fails.
156 */ 156 */
157 bool abort_completion; 157 bool abort_completion;
158 }; 158 };
159 159
160 struct __drm_planes_state { 160 struct __drm_planes_state {
161 struct drm_plane *ptr; 161 struct drm_plane *ptr;
162 struct drm_plane_state *state, *old_st 162 struct drm_plane_state *state, *old_state, *new_state;
163 }; 163 };
164 164
165 struct __drm_crtcs_state { 165 struct __drm_crtcs_state {
166 struct drm_crtc *ptr; 166 struct drm_crtc *ptr;
167 struct drm_crtc_state *state, *old_sta 167 struct drm_crtc_state *state, *old_state, *new_state;
168 168
169 /** 169 /**
170 * @commit: 170 * @commit:
171 * 171 *
172 * A reference to the CRTC commit obje 172 * A reference to the CRTC commit object that is kept for use by
173 * drm_atomic_helper_wait_for_flip_don 173 * drm_atomic_helper_wait_for_flip_done() after
174 * drm_atomic_helper_commit_hw_done() 174 * drm_atomic_helper_commit_hw_done() is called. This ensures that a
175 * concurrent commit won't free a comm 175 * concurrent commit won't free a commit object that is still in use.
176 */ 176 */
177 struct drm_crtc_commit *commit; 177 struct drm_crtc_commit *commit;
178 178
179 s32 __user *out_fence_ptr; 179 s32 __user *out_fence_ptr;
180 u64 last_vblank_count; 180 u64 last_vblank_count;
181 }; 181 };
182 182
183 struct __drm_connnectors_state { 183 struct __drm_connnectors_state {
184 struct drm_connector *ptr; 184 struct drm_connector *ptr;
185 struct drm_connector_state *state, *ol 185 struct drm_connector_state *state, *old_state, *new_state;
186 /** 186 /**
187 * @out_fence_ptr: 187 * @out_fence_ptr:
188 * 188 *
189 * User-provided pointer which the ker 189 * User-provided pointer which the kernel uses to return a sync_file
190 * file descriptor. Used by writeback 190 * file descriptor. Used by writeback connectors to signal completion of
191 * the writeback. 191 * the writeback.
192 */ 192 */
193 s32 __user *out_fence_ptr; 193 s32 __user *out_fence_ptr;
194 }; 194 };
195 195
196 struct drm_private_obj; 196 struct drm_private_obj;
197 struct drm_private_state; 197 struct drm_private_state;
198 198
199 /** 199 /**
200 * struct drm_private_state_funcs - atomic sta 200 * struct drm_private_state_funcs - atomic state functions for private objects
201 * 201 *
202 * These hooks are used by atomic helpers to c 202 * These hooks are used by atomic helpers to create, swap and destroy states of
203 * private objects. The structure itself is us 203 * private objects. The structure itself is used as a vtable to identify the
204 * associated private object type. Each privat 204 * associated private object type. Each private object type that needs to be
205 * added to the atomic states is expected to h 205 * added to the atomic states is expected to have an implementation of these
206 * hooks and pass a pointer to its drm_private 206 * hooks and pass a pointer to its drm_private_state_funcs struct to
207 * drm_atomic_get_private_obj_state(). 207 * drm_atomic_get_private_obj_state().
208 */ 208 */
209 struct drm_private_state_funcs { 209 struct drm_private_state_funcs {
210 /** 210 /**
211 * @atomic_duplicate_state: 211 * @atomic_duplicate_state:
212 * 212 *
213 * Duplicate the current state of the 213 * Duplicate the current state of the private object and return it. It
214 * is an error to call this before obj 214 * is an error to call this before obj->state has been initialized.
215 * 215 *
216 * RETURNS: 216 * RETURNS:
217 * 217 *
218 * Duplicated atomic state or NULL whe 218 * Duplicated atomic state or NULL when obj->state is not
219 * initialized or allocation failed. 219 * initialized or allocation failed.
220 */ 220 */
221 struct drm_private_state *(*atomic_dup 221 struct drm_private_state *(*atomic_duplicate_state)(struct drm_private_obj *obj);
222 222
223 /** 223 /**
224 * @atomic_destroy_state: 224 * @atomic_destroy_state:
225 * 225 *
226 * Frees the private object state crea 226 * Frees the private object state created with @atomic_duplicate_state.
227 */ 227 */
228 void (*atomic_destroy_state)(struct dr 228 void (*atomic_destroy_state)(struct drm_private_obj *obj,
229 struct dr 229 struct drm_private_state *state);
230 230
231 /** 231 /**
232 * @atomic_print_state: 232 * @atomic_print_state:
233 * 233 *
234 * If driver subclasses &struct drm_pr 234 * If driver subclasses &struct drm_private_state, it should implement
235 * this optional hook for printing add 235 * this optional hook for printing additional driver specific state.
236 * 236 *
237 * Do not call this directly, use drm_ 237 * Do not call this directly, use drm_atomic_private_obj_print_state()
238 * instead. 238 * instead.
239 */ 239 */
240 void (*atomic_print_state)(struct drm_ 240 void (*atomic_print_state)(struct drm_printer *p,
241 const struc 241 const struct drm_private_state *state);
242 }; 242 };
243 243
244 /** 244 /**
245 * struct drm_private_obj - base struct for dr 245 * struct drm_private_obj - base struct for driver private atomic object
246 * 246 *
247 * A driver private object is initialized by c 247 * A driver private object is initialized by calling
248 * drm_atomic_private_obj_init() and cleaned u 248 * drm_atomic_private_obj_init() and cleaned up by calling
249 * drm_atomic_private_obj_fini(). 249 * drm_atomic_private_obj_fini().
250 * 250 *
251 * Currently only tracks the state update func 251 * Currently only tracks the state update functions and the opaque driver
252 * private state itself, but in the future mig 252 * private state itself, but in the future might also track which
253 * &drm_modeset_lock is required to duplicate 253 * &drm_modeset_lock is required to duplicate and update this object's state.
254 * 254 *
255 * All private objects must be initialized bef 255 * All private objects must be initialized before the DRM device they are
256 * attached to is registered to the DRM subsys 256 * attached to is registered to the DRM subsystem (call to drm_dev_register())
257 * and should stay around until this DRM devic 257 * and should stay around until this DRM device is unregistered (call to
258 * drm_dev_unregister()). In other words, priv 258 * drm_dev_unregister()). In other words, private objects lifetime is tied
259 * to the DRM device lifetime. This implies th 259 * to the DRM device lifetime. This implies that:
260 * 260 *
261 * 1/ all calls to drm_atomic_private_obj_init 261 * 1/ all calls to drm_atomic_private_obj_init() must be done before calling
262 * drm_dev_register() 262 * drm_dev_register()
263 * 2/ all calls to drm_atomic_private_obj_fini 263 * 2/ all calls to drm_atomic_private_obj_fini() must be done after calling
264 * drm_dev_unregister() 264 * drm_dev_unregister()
265 * 265 *
266 * If that private object is used to store a s 266 * If that private object is used to store a state shared by multiple
267 * CRTCs, proper care must be taken to ensure 267 * CRTCs, proper care must be taken to ensure that non-blocking commits are
268 * properly ordered to avoid a use-after-free 268 * properly ordered to avoid a use-after-free issue.
269 * 269 *
270 * Indeed, assuming a sequence of two non-bloc 270 * Indeed, assuming a sequence of two non-blocking &drm_atomic_commit on two
271 * different &drm_crtc using different &drm_pl 271 * different &drm_crtc using different &drm_plane and &drm_connector, so with no
272 * resources shared, there's no guarantee on w 272 * resources shared, there's no guarantee on which commit is going to happen
273 * first. However, the second &drm_atomic_comm 273 * first. However, the second &drm_atomic_commit will consider the first
274 * &drm_private_obj its old state, and will be 274 * &drm_private_obj its old state, and will be in charge of freeing it whenever
275 * the second &drm_atomic_commit is done. 275 * the second &drm_atomic_commit is done.
276 * 276 *
277 * If the first &drm_atomic_commit happens aft 277 * If the first &drm_atomic_commit happens after it, it will consider its
278 * &drm_private_obj the new state and will be 278 * &drm_private_obj the new state and will be likely to access it, resulting in
279 * an access to a freed memory region. Drivers 279 * an access to a freed memory region. Drivers should store (and get a reference
280 * to) the &drm_crtc_commit structure in our p 280 * to) the &drm_crtc_commit structure in our private state in
281 * &drm_mode_config_helper_funcs.atomic_commit 281 * &drm_mode_config_helper_funcs.atomic_commit_setup, and then wait for that
282 * commit to complete as the first step of 282 * commit to complete as the first step of
283 * &drm_mode_config_helper_funcs.atomic_commit 283 * &drm_mode_config_helper_funcs.atomic_commit_tail, similar to
284 * drm_atomic_helper_wait_for_dependencies(). 284 * drm_atomic_helper_wait_for_dependencies().
285 */ 285 */
286 struct drm_private_obj { 286 struct drm_private_obj {
287 /** 287 /**
288 * @head: List entry used to attach a 288 * @head: List entry used to attach a private object to a &drm_device
289 * (queued to &drm_mode_config.privobj 289 * (queued to &drm_mode_config.privobj_list).
290 */ 290 */
291 struct list_head head; 291 struct list_head head;
292 292
293 /** 293 /**
294 * @lock: Modeset lock to protect the 294 * @lock: Modeset lock to protect the state object.
295 */ 295 */
296 struct drm_modeset_lock lock; 296 struct drm_modeset_lock lock;
297 297
298 /** 298 /**
299 * @state: Current atomic state for th 299 * @state: Current atomic state for this driver private object.
300 */ 300 */
301 struct drm_private_state *state; 301 struct drm_private_state *state;
302 302
303 /** 303 /**
304 * @funcs: 304 * @funcs:
305 * 305 *
306 * Functions to manipulate the state o 306 * Functions to manipulate the state of this driver private object, see
307 * &drm_private_state_funcs. 307 * &drm_private_state_funcs.
308 */ 308 */
309 const struct drm_private_state_funcs * 309 const struct drm_private_state_funcs *funcs;
310 }; 310 };
311 311
312 /** 312 /**
313 * drm_for_each_privobj() - private object ite 313 * drm_for_each_privobj() - private object iterator
314 * 314 *
315 * @privobj: pointer to the current private ob 315 * @privobj: pointer to the current private object. Updated after each
316 * iteration 316 * iteration
317 * @dev: the DRM device we want get private ob 317 * @dev: the DRM device we want get private objects from
318 * 318 *
319 * Allows one to iterate over all private obje 319 * Allows one to iterate over all private objects attached to @dev
320 */ 320 */
321 #define drm_for_each_privobj(privobj, dev) \ 321 #define drm_for_each_privobj(privobj, dev) \
322 list_for_each_entry(privobj, &(dev)->m 322 list_for_each_entry(privobj, &(dev)->mode_config.privobj_list, head)
323 323
324 /** 324 /**
325 * struct drm_private_state - base struct for 325 * struct drm_private_state - base struct for driver private object state
326 * 326 *
327 * Currently only contains a backpointer to th 327 * Currently only contains a backpointer to the overall atomic update,
328 * and the relevant private object but in the 328 * and the relevant private object but in the future also might hold
329 * synchronization information similar to e.g. 329 * synchronization information similar to e.g. &drm_crtc.commit.
330 */ 330 */
331 struct drm_private_state { 331 struct drm_private_state {
332 /** 332 /**
333 * @state: backpointer to global drm_a 333 * @state: backpointer to global drm_atomic_state
334 */ 334 */
335 struct drm_atomic_state *state; 335 struct drm_atomic_state *state;
336 336
337 /** 337 /**
338 * @obj: backpointer to the private ob 338 * @obj: backpointer to the private object
339 */ 339 */
340 struct drm_private_obj *obj; 340 struct drm_private_obj *obj;
341 }; 341 };
342 342
343 struct __drm_private_objs_state { 343 struct __drm_private_objs_state {
344 struct drm_private_obj *ptr; 344 struct drm_private_obj *ptr;
345 struct drm_private_state *state, *old_ 345 struct drm_private_state *state, *old_state, *new_state;
346 }; 346 };
347 347
348 /** 348 /**
349 * struct drm_atomic_state - Atomic commit str !! 349 * struct drm_atomic_state - the global state object for atomic updates
350 * !! 350 * @ref: count of all references to this state (will not be freed until zero)
351 * This structure is the kernel counterpart of !! 351 * @dev: parent DRM device
352 * an atomic commit that transitions from an o !! 352 * @async_update: hint for asynchronous plane update
353 * contains all the objects affected by the at !! 353 * @planes: pointer to array of structures with per-plane data
354 * state structures and pointers to the old st !! 354 * @crtcs: pointer to array of CRTC pointers
355 * these. !! 355 * @num_connector: size of the @connectors and @connector_states arrays
>> 356 * @connectors: pointer to array of structures with per-connector data
>> 357 * @num_private_objs: size of the @private_objs array
>> 358 * @private_objs: pointer to array of private object pointers
>> 359 * @acquire_ctx: acquire context for this atomic modeset state update
356 * 360 *
357 * States are added to an atomic update by cal 361 * States are added to an atomic update by calling drm_atomic_get_crtc_state(),
358 * drm_atomic_get_plane_state(), drm_atomic_ge 362 * drm_atomic_get_plane_state(), drm_atomic_get_connector_state(), or for
359 * private state structures, drm_atomic_get_pr 363 * private state structures, drm_atomic_get_private_obj_state().
360 */ 364 */
361 struct drm_atomic_state { 365 struct drm_atomic_state {
362 /** <<
363 * @ref: <<
364 * <<
365 * Count of all references to this upd <<
366 */ <<
367 struct kref ref; 366 struct kref ref;
368 367
369 /** <<
370 * @dev: Parent DRM Device. <<
371 */ <<
372 struct drm_device *dev; 368 struct drm_device *dev;
373 369
374 /** 370 /**
375 * @allow_modeset: 371 * @allow_modeset:
376 * 372 *
377 * Allow full modeset. This is used by 373 * Allow full modeset. This is used by the ATOMIC IOCTL handler to
378 * implement the DRM_MODE_ATOMIC_ALLOW 374 * implement the DRM_MODE_ATOMIC_ALLOW_MODESET flag. Drivers should
379 * never consult this flag, instead lo 375 * never consult this flag, instead looking at the output of
380 * drm_atomic_crtc_needs_modeset(). 376 * drm_atomic_crtc_needs_modeset().
381 */ 377 */
382 bool allow_modeset : 1; 378 bool allow_modeset : 1;
383 /** 379 /**
384 * @legacy_cursor_update: 380 * @legacy_cursor_update:
385 * 381 *
386 * Hint to enforce legacy cursor IOCTL 382 * Hint to enforce legacy cursor IOCTL semantics.
387 * 383 *
388 * WARNING: This is thoroughly broken 384 * WARNING: This is thoroughly broken and pretty much impossible to
389 * implement correctly. Drivers must i 385 * implement correctly. Drivers must ignore this and should instead
390 * implement &drm_plane_helper_funcs.a 386 * implement &drm_plane_helper_funcs.atomic_async_check and
391 * &drm_plane_helper_funcs.atomic_asyn 387 * &drm_plane_helper_funcs.atomic_async_commit hooks. New users of this
392 * flag are not allowed. 388 * flag are not allowed.
393 */ 389 */
394 bool legacy_cursor_update : 1; 390 bool legacy_cursor_update : 1;
395 <<
396 /** <<
397 * @async_update: hint for asynchronou <<
398 */ <<
399 bool async_update : 1; 391 bool async_update : 1;
400 <<
401 /** 392 /**
402 * @duplicated: 393 * @duplicated:
403 * 394 *
404 * Indicates whether or not this atomi 395 * Indicates whether or not this atomic state was duplicated using
405 * drm_atomic_helper_duplicate_state() 396 * drm_atomic_helper_duplicate_state(). Drivers and atomic helpers
406 * should use this to fixup normal in 397 * should use this to fixup normal inconsistencies in duplicated
407 * states. 398 * states.
408 */ 399 */
409 bool duplicated : 1; 400 bool duplicated : 1;
410 <<
411 /** <<
412 * @planes: <<
413 * <<
414 * Pointer to array of @drm_plane and <<
415 * update. <<
416 */ <<
417 struct __drm_planes_state *planes; 401 struct __drm_planes_state *planes;
418 <<
419 /** <<
420 * @crtcs: <<
421 * <<
422 * Pointer to array of @drm_crtc and @ <<
423 * update. <<
424 */ <<
425 struct __drm_crtcs_state *crtcs; 402 struct __drm_crtcs_state *crtcs;
426 <<
427 /** <<
428 * @num_connector: size of the @connec <<
429 */ <<
430 int num_connector; 403 int num_connector;
431 <<
432 /** <<
433 * @connectors: <<
434 * <<
435 * Pointer to array of @drm_connector <<
436 * this update. <<
437 */ <<
438 struct __drm_connnectors_state *connec 404 struct __drm_connnectors_state *connectors;
439 <<
440 /** <<
441 * @num_private_objs: size of the @pri <<
442 */ <<
443 int num_private_objs; 405 int num_private_objs;
444 <<
445 /** <<
446 * @private_objs: <<
447 * <<
448 * Pointer to array of @drm_private_ob <<
449 * of this update. <<
450 */ <<
451 struct __drm_private_objs_state *priva 406 struct __drm_private_objs_state *private_objs;
452 407
453 /** <<
454 * @acquire_ctx: acquire context for t <<
455 */ <<
456 struct drm_modeset_acquire_ctx *acquir 408 struct drm_modeset_acquire_ctx *acquire_ctx;
457 409
458 /** 410 /**
459 * @fake_commit: 411 * @fake_commit:
460 * 412 *
461 * Used for signaling unbound planes/c 413 * Used for signaling unbound planes/connectors.
462 * When a connector or plane is not bo 414 * When a connector or plane is not bound to any CRTC, it's still important
463 * to preserve linearity to prevent th !! 415 * to preserve linearity to prevent the atomic states from being freed to early.
464 * 416 *
465 * This commit (if set) is not bound t 417 * This commit (if set) is not bound to any CRTC, but will be completed when
466 * drm_atomic_helper_commit_hw_done() 418 * drm_atomic_helper_commit_hw_done() is called.
467 */ 419 */
468 struct drm_crtc_commit *fake_commit; 420 struct drm_crtc_commit *fake_commit;
469 421
470 /** 422 /**
471 * @commit_work: 423 * @commit_work:
472 * 424 *
473 * Work item which can be used by the 425 * Work item which can be used by the driver or helpers to execute the
474 * commit without blocking. 426 * commit without blocking.
475 */ 427 */
476 struct work_struct commit_work; 428 struct work_struct commit_work;
477 }; 429 };
478 430
479 void __drm_crtc_commit_free(struct kref *kref) 431 void __drm_crtc_commit_free(struct kref *kref);
480 432
481 /** 433 /**
482 * drm_crtc_commit_get - acquire a reference t 434 * drm_crtc_commit_get - acquire a reference to the CRTC commit
483 * @commit: CRTC commit 435 * @commit: CRTC commit
484 * 436 *
485 * Increases the reference of @commit. 437 * Increases the reference of @commit.
486 * 438 *
487 * Returns: 439 * Returns:
488 * The pointer to @commit, with reference incr 440 * The pointer to @commit, with reference increased.
489 */ 441 */
490 static inline struct drm_crtc_commit *drm_crtc 442 static inline struct drm_crtc_commit *drm_crtc_commit_get(struct drm_crtc_commit *commit)
491 { 443 {
492 kref_get(&commit->ref); 444 kref_get(&commit->ref);
493 return commit; 445 return commit;
494 } 446 }
495 447
496 /** 448 /**
497 * drm_crtc_commit_put - release a reference t 449 * drm_crtc_commit_put - release a reference to the CRTC commmit
498 * @commit: CRTC commit 450 * @commit: CRTC commit
499 * 451 *
500 * This releases a reference to @commit which 452 * This releases a reference to @commit which is freed after removing the
501 * final reference. No locking required and ca 453 * final reference. No locking required and callable from any context.
502 */ 454 */
503 static inline void drm_crtc_commit_put(struct 455 static inline void drm_crtc_commit_put(struct drm_crtc_commit *commit)
504 { 456 {
505 kref_put(&commit->ref, __drm_crtc_comm 457 kref_put(&commit->ref, __drm_crtc_commit_free);
506 } 458 }
507 459
508 int drm_crtc_commit_wait(struct drm_crtc_commi 460 int drm_crtc_commit_wait(struct drm_crtc_commit *commit);
509 461
510 struct drm_atomic_state * __must_check 462 struct drm_atomic_state * __must_check
511 drm_atomic_state_alloc(struct drm_device *dev) 463 drm_atomic_state_alloc(struct drm_device *dev);
512 void drm_atomic_state_clear(struct drm_atomic_ 464 void drm_atomic_state_clear(struct drm_atomic_state *state);
513 465
514 /** 466 /**
515 * drm_atomic_state_get - acquire a reference 467 * drm_atomic_state_get - acquire a reference to the atomic state
516 * @state: The atomic state 468 * @state: The atomic state
517 * 469 *
518 * Returns a new reference to the @state 470 * Returns a new reference to the @state
519 */ 471 */
520 static inline struct drm_atomic_state * 472 static inline struct drm_atomic_state *
521 drm_atomic_state_get(struct drm_atomic_state * 473 drm_atomic_state_get(struct drm_atomic_state *state)
522 { 474 {
523 kref_get(&state->ref); 475 kref_get(&state->ref);
524 return state; 476 return state;
525 } 477 }
526 478
527 void __drm_atomic_state_free(struct kref *ref) 479 void __drm_atomic_state_free(struct kref *ref);
528 480
529 /** 481 /**
530 * drm_atomic_state_put - release a reference 482 * drm_atomic_state_put - release a reference to the atomic state
531 * @state: The atomic state 483 * @state: The atomic state
532 * 484 *
533 * This releases a reference to @state which i 485 * This releases a reference to @state which is freed after removing the
534 * final reference. No locking required and ca 486 * final reference. No locking required and callable from any context.
535 */ 487 */
536 static inline void drm_atomic_state_put(struct 488 static inline void drm_atomic_state_put(struct drm_atomic_state *state)
537 { 489 {
538 kref_put(&state->ref, __drm_atomic_sta 490 kref_put(&state->ref, __drm_atomic_state_free);
539 } 491 }
540 492
541 int __must_check 493 int __must_check
542 drm_atomic_state_init(struct drm_device *dev, 494 drm_atomic_state_init(struct drm_device *dev, struct drm_atomic_state *state);
543 void drm_atomic_state_default_clear(struct drm 495 void drm_atomic_state_default_clear(struct drm_atomic_state *state);
544 void drm_atomic_state_default_release(struct d 496 void drm_atomic_state_default_release(struct drm_atomic_state *state);
545 497
546 struct drm_crtc_state * __must_check 498 struct drm_crtc_state * __must_check
547 drm_atomic_get_crtc_state(struct drm_atomic_st 499 drm_atomic_get_crtc_state(struct drm_atomic_state *state,
548 struct drm_crtc *crt 500 struct drm_crtc *crtc);
549 struct drm_plane_state * __must_check 501 struct drm_plane_state * __must_check
550 drm_atomic_get_plane_state(struct drm_atomic_s 502 drm_atomic_get_plane_state(struct drm_atomic_state *state,
551 struct drm_plane *p 503 struct drm_plane *plane);
552 struct drm_connector_state * __must_check 504 struct drm_connector_state * __must_check
553 drm_atomic_get_connector_state(struct drm_atom 505 drm_atomic_get_connector_state(struct drm_atomic_state *state,
554 struct drm_conn 506 struct drm_connector *connector);
555 507
556 void drm_atomic_private_obj_init(struct drm_de 508 void drm_atomic_private_obj_init(struct drm_device *dev,
557 struct drm_pr 509 struct drm_private_obj *obj,
558 struct drm_pr 510 struct drm_private_state *state,
559 const struct 511 const struct drm_private_state_funcs *funcs);
560 void drm_atomic_private_obj_fini(struct drm_pr 512 void drm_atomic_private_obj_fini(struct drm_private_obj *obj);
561 513
562 struct drm_private_state * __must_check 514 struct drm_private_state * __must_check
563 drm_atomic_get_private_obj_state(struct drm_at 515 drm_atomic_get_private_obj_state(struct drm_atomic_state *state,
564 struct drm_pr 516 struct drm_private_obj *obj);
565 struct drm_private_state * 517 struct drm_private_state *
566 drm_atomic_get_old_private_obj_state(const str 518 drm_atomic_get_old_private_obj_state(const struct drm_atomic_state *state,
567 struct dr 519 struct drm_private_obj *obj);
568 struct drm_private_state * 520 struct drm_private_state *
569 drm_atomic_get_new_private_obj_state(const str 521 drm_atomic_get_new_private_obj_state(const struct drm_atomic_state *state,
570 struct dr 522 struct drm_private_obj *obj);
571 523
572 struct drm_connector * 524 struct drm_connector *
573 drm_atomic_get_old_connector_for_encoder(const 525 drm_atomic_get_old_connector_for_encoder(const struct drm_atomic_state *state,
574 struc 526 struct drm_encoder *encoder);
575 struct drm_connector * 527 struct drm_connector *
576 drm_atomic_get_new_connector_for_encoder(const 528 drm_atomic_get_new_connector_for_encoder(const struct drm_atomic_state *state,
577 struc 529 struct drm_encoder *encoder);
578 530
579 struct drm_crtc * 531 struct drm_crtc *
580 drm_atomic_get_old_crtc_for_encoder(struct drm 532 drm_atomic_get_old_crtc_for_encoder(struct drm_atomic_state *state,
581 struc 533 struct drm_encoder *encoder);
582 struct drm_crtc * 534 struct drm_crtc *
583 drm_atomic_get_new_crtc_for_encoder(struct drm 535 drm_atomic_get_new_crtc_for_encoder(struct drm_atomic_state *state,
584 struc 536 struct drm_encoder *encoder);
585 537
586 /** 538 /**
587 * drm_atomic_get_existing_crtc_state - get CR 539 * drm_atomic_get_existing_crtc_state - get CRTC state, if it exists
588 * @state: global atomic state object 540 * @state: global atomic state object
589 * @crtc: CRTC to grab 541 * @crtc: CRTC to grab
590 * 542 *
591 * This function returns the CRTC state for th 543 * This function returns the CRTC state for the given CRTC, or NULL
592 * if the CRTC is not part of the global atomi 544 * if the CRTC is not part of the global atomic state.
593 * 545 *
594 * This function is deprecated, @drm_atomic_ge 546 * This function is deprecated, @drm_atomic_get_old_crtc_state or
595 * @drm_atomic_get_new_crtc_state should be us 547 * @drm_atomic_get_new_crtc_state should be used instead.
596 */ 548 */
597 static inline struct drm_crtc_state * 549 static inline struct drm_crtc_state *
598 drm_atomic_get_existing_crtc_state(const struc 550 drm_atomic_get_existing_crtc_state(const struct drm_atomic_state *state,
599 struct drm_ 551 struct drm_crtc *crtc)
600 { 552 {
601 return state->crtcs[drm_crtc_index(crt 553 return state->crtcs[drm_crtc_index(crtc)].state;
602 } 554 }
603 555
604 /** 556 /**
605 * drm_atomic_get_old_crtc_state - get old CRT 557 * drm_atomic_get_old_crtc_state - get old CRTC state, if it exists
606 * @state: global atomic state object 558 * @state: global atomic state object
607 * @crtc: CRTC to grab 559 * @crtc: CRTC to grab
608 * 560 *
609 * This function returns the old CRTC state fo 561 * This function returns the old CRTC state for the given CRTC, or
610 * NULL if the CRTC is not part of the global 562 * NULL if the CRTC is not part of the global atomic state.
611 */ 563 */
612 static inline struct drm_crtc_state * 564 static inline struct drm_crtc_state *
613 drm_atomic_get_old_crtc_state(const struct drm 565 drm_atomic_get_old_crtc_state(const struct drm_atomic_state *state,
614 struct drm_crtc 566 struct drm_crtc *crtc)
615 { 567 {
616 return state->crtcs[drm_crtc_index(crt 568 return state->crtcs[drm_crtc_index(crtc)].old_state;
617 } 569 }
618 /** 570 /**
619 * drm_atomic_get_new_crtc_state - get new CRT 571 * drm_atomic_get_new_crtc_state - get new CRTC state, if it exists
620 * @state: global atomic state object 572 * @state: global atomic state object
621 * @crtc: CRTC to grab 573 * @crtc: CRTC to grab
622 * 574 *
623 * This function returns the new CRTC state fo 575 * This function returns the new CRTC state for the given CRTC, or
624 * NULL if the CRTC is not part of the global 576 * NULL if the CRTC is not part of the global atomic state.
625 */ 577 */
626 static inline struct drm_crtc_state * 578 static inline struct drm_crtc_state *
627 drm_atomic_get_new_crtc_state(const struct drm 579 drm_atomic_get_new_crtc_state(const struct drm_atomic_state *state,
628 struct drm_crtc 580 struct drm_crtc *crtc)
629 { 581 {
630 return state->crtcs[drm_crtc_index(crt 582 return state->crtcs[drm_crtc_index(crtc)].new_state;
631 } 583 }
632 584
633 /** 585 /**
634 * drm_atomic_get_existing_plane_state - get p 586 * drm_atomic_get_existing_plane_state - get plane state, if it exists
635 * @state: global atomic state object 587 * @state: global atomic state object
636 * @plane: plane to grab 588 * @plane: plane to grab
637 * 589 *
638 * This function returns the plane state for t 590 * This function returns the plane state for the given plane, or NULL
639 * if the plane is not part of the global atom 591 * if the plane is not part of the global atomic state.
640 * 592 *
641 * This function is deprecated, @drm_atomic_ge 593 * This function is deprecated, @drm_atomic_get_old_plane_state or
642 * @drm_atomic_get_new_plane_state should be u 594 * @drm_atomic_get_new_plane_state should be used instead.
643 */ 595 */
644 static inline struct drm_plane_state * 596 static inline struct drm_plane_state *
645 drm_atomic_get_existing_plane_state(const stru 597 drm_atomic_get_existing_plane_state(const struct drm_atomic_state *state,
646 struct drm 598 struct drm_plane *plane)
647 { 599 {
648 return state->planes[drm_plane_index(p 600 return state->planes[drm_plane_index(plane)].state;
649 } 601 }
650 602
651 /** 603 /**
652 * drm_atomic_get_old_plane_state - get plane 604 * drm_atomic_get_old_plane_state - get plane state, if it exists
653 * @state: global atomic state object 605 * @state: global atomic state object
654 * @plane: plane to grab 606 * @plane: plane to grab
655 * 607 *
656 * This function returns the old plane state f 608 * This function returns the old plane state for the given plane, or
657 * NULL if the plane is not part of the global 609 * NULL if the plane is not part of the global atomic state.
658 */ 610 */
659 static inline struct drm_plane_state * 611 static inline struct drm_plane_state *
660 drm_atomic_get_old_plane_state(const struct dr 612 drm_atomic_get_old_plane_state(const struct drm_atomic_state *state,
661 struct drm_plan 613 struct drm_plane *plane)
662 { 614 {
663 return state->planes[drm_plane_index(p 615 return state->planes[drm_plane_index(plane)].old_state;
664 } 616 }
665 617
666 /** 618 /**
667 * drm_atomic_get_new_plane_state - get plane 619 * drm_atomic_get_new_plane_state - get plane state, if it exists
668 * @state: global atomic state object 620 * @state: global atomic state object
669 * @plane: plane to grab 621 * @plane: plane to grab
670 * 622 *
671 * This function returns the new plane state f 623 * This function returns the new plane state for the given plane, or
672 * NULL if the plane is not part of the global 624 * NULL if the plane is not part of the global atomic state.
673 */ 625 */
674 static inline struct drm_plane_state * 626 static inline struct drm_plane_state *
675 drm_atomic_get_new_plane_state(const struct dr 627 drm_atomic_get_new_plane_state(const struct drm_atomic_state *state,
676 struct drm_plan 628 struct drm_plane *plane)
677 { 629 {
678 return state->planes[drm_plane_index(p 630 return state->planes[drm_plane_index(plane)].new_state;
679 } 631 }
680 632
681 /** 633 /**
682 * drm_atomic_get_existing_connector_state - g 634 * drm_atomic_get_existing_connector_state - get connector state, if it exists
683 * @state: global atomic state object 635 * @state: global atomic state object
684 * @connector: connector to grab 636 * @connector: connector to grab
685 * 637 *
686 * This function returns the connector state f 638 * This function returns the connector state for the given connector,
687 * or NULL if the connector is not part of the 639 * or NULL if the connector is not part of the global atomic state.
688 * 640 *
689 * This function is deprecated, @drm_atomic_ge 641 * This function is deprecated, @drm_atomic_get_old_connector_state or
690 * @drm_atomic_get_new_connector_state should 642 * @drm_atomic_get_new_connector_state should be used instead.
691 */ 643 */
692 static inline struct drm_connector_state * 644 static inline struct drm_connector_state *
693 drm_atomic_get_existing_connector_state(const 645 drm_atomic_get_existing_connector_state(const struct drm_atomic_state *state,
694 struct 646 struct drm_connector *connector)
695 { 647 {
696 int index = drm_connector_index(connec 648 int index = drm_connector_index(connector);
697 649
698 if (index >= state->num_connector) 650 if (index >= state->num_connector)
699 return NULL; 651 return NULL;
700 652
701 return state->connectors[index].state; 653 return state->connectors[index].state;
702 } 654 }
703 655
704 /** 656 /**
705 * drm_atomic_get_old_connector_state - get co 657 * drm_atomic_get_old_connector_state - get connector state, if it exists
706 * @state: global atomic state object 658 * @state: global atomic state object
707 * @connector: connector to grab 659 * @connector: connector to grab
708 * 660 *
709 * This function returns the old connector sta 661 * This function returns the old connector state for the given connector,
710 * or NULL if the connector is not part of the 662 * or NULL if the connector is not part of the global atomic state.
711 */ 663 */
712 static inline struct drm_connector_state * 664 static inline struct drm_connector_state *
713 drm_atomic_get_old_connector_state(const struc 665 drm_atomic_get_old_connector_state(const struct drm_atomic_state *state,
714 struct drm_ 666 struct drm_connector *connector)
715 { 667 {
716 int index = drm_connector_index(connec 668 int index = drm_connector_index(connector);
717 669
718 if (index >= state->num_connector) 670 if (index >= state->num_connector)
719 return NULL; 671 return NULL;
720 672
721 return state->connectors[index].old_st 673 return state->connectors[index].old_state;
722 } 674 }
723 675
724 /** 676 /**
725 * drm_atomic_get_new_connector_state - get co 677 * drm_atomic_get_new_connector_state - get connector state, if it exists
726 * @state: global atomic state object 678 * @state: global atomic state object
727 * @connector: connector to grab 679 * @connector: connector to grab
728 * 680 *
729 * This function returns the new connector sta 681 * This function returns the new connector state for the given connector,
730 * or NULL if the connector is not part of the 682 * or NULL if the connector is not part of the global atomic state.
731 */ 683 */
732 static inline struct drm_connector_state * 684 static inline struct drm_connector_state *
733 drm_atomic_get_new_connector_state(const struc 685 drm_atomic_get_new_connector_state(const struct drm_atomic_state *state,
734 struct drm_ 686 struct drm_connector *connector)
735 { 687 {
736 int index = drm_connector_index(connec 688 int index = drm_connector_index(connector);
737 689
738 if (index >= state->num_connector) 690 if (index >= state->num_connector)
739 return NULL; 691 return NULL;
740 692
741 return state->connectors[index].new_st 693 return state->connectors[index].new_state;
742 } 694 }
743 695
744 /** 696 /**
745 * __drm_atomic_get_current_plane_state - get 697 * __drm_atomic_get_current_plane_state - get current plane state
746 * @state: global atomic state object 698 * @state: global atomic state object
747 * @plane: plane to grab 699 * @plane: plane to grab
748 * 700 *
749 * This function returns the plane state for t 701 * This function returns the plane state for the given plane, either from
750 * @state, or if the plane isn't part of the a 702 * @state, or if the plane isn't part of the atomic state update, from @plane.
751 * This is useful in atomic check callbacks, w 703 * This is useful in atomic check callbacks, when drivers need to peek at, but
752 * not change, state of other planes, since it 704 * not change, state of other planes, since it avoids threading an error code
753 * back up the call chain. 705 * back up the call chain.
754 * 706 *
755 * WARNING: 707 * WARNING:
756 * 708 *
757 * Note that this function is in general unsaf 709 * Note that this function is in general unsafe since it doesn't check for the
758 * required locking for access state structure 710 * required locking for access state structures. Drivers must ensure that it is
759 * safe to access the returned state structure 711 * safe to access the returned state structure through other means. One common
760 * example is when planes are fixed to a singl 712 * example is when planes are fixed to a single CRTC, and the driver knows that
761 * the CRTC lock is held already. In that case 713 * the CRTC lock is held already. In that case holding the CRTC lock gives a
762 * read-lock on all planes connected to that C 714 * read-lock on all planes connected to that CRTC. But if planes can be
763 * reassigned things get more tricky. In that 715 * reassigned things get more tricky. In that case it's better to use
764 * drm_atomic_get_plane_state and wire up full 716 * drm_atomic_get_plane_state and wire up full error handling.
765 * 717 *
766 * Returns: 718 * Returns:
767 * 719 *
768 * Read-only pointer to the current plane stat 720 * Read-only pointer to the current plane state.
769 */ 721 */
770 static inline const struct drm_plane_state * 722 static inline const struct drm_plane_state *
771 __drm_atomic_get_current_plane_state(const str 723 __drm_atomic_get_current_plane_state(const struct drm_atomic_state *state,
772 struct dr 724 struct drm_plane *plane)
773 { 725 {
774 if (state->planes[drm_plane_index(plan 726 if (state->planes[drm_plane_index(plane)].state)
775 return state->planes[drm_plane 727 return state->planes[drm_plane_index(plane)].state;
776 728
777 return plane->state; 729 return plane->state;
778 } 730 }
779 731
780 int __must_check 732 int __must_check
781 drm_atomic_add_encoder_bridges(struct drm_atom 733 drm_atomic_add_encoder_bridges(struct drm_atomic_state *state,
782 struct drm_enco 734 struct drm_encoder *encoder);
783 int __must_check 735 int __must_check
784 drm_atomic_add_affected_connectors(struct drm_ 736 drm_atomic_add_affected_connectors(struct drm_atomic_state *state,
785 struct drm_ 737 struct drm_crtc *crtc);
786 int __must_check 738 int __must_check
787 drm_atomic_add_affected_planes(struct drm_atom 739 drm_atomic_add_affected_planes(struct drm_atomic_state *state,
788 struct drm_crtc 740 struct drm_crtc *crtc);
789 741
790 int __must_check drm_atomic_check_only(struct 742 int __must_check drm_atomic_check_only(struct drm_atomic_state *state);
791 int __must_check drm_atomic_commit(struct drm_ 743 int __must_check drm_atomic_commit(struct drm_atomic_state *state);
792 int __must_check drm_atomic_nonblocking_commit 744 int __must_check drm_atomic_nonblocking_commit(struct drm_atomic_state *state);
793 745
794 void drm_state_dump(struct drm_device *dev, st 746 void drm_state_dump(struct drm_device *dev, struct drm_printer *p);
795 747
796 /** 748 /**
797 * for_each_oldnew_connector_in_state - iterat 749 * for_each_oldnew_connector_in_state - iterate over all connectors in an atomic update
798 * @__state: &struct drm_atomic_state pointer 750 * @__state: &struct drm_atomic_state pointer
799 * @connector: &struct drm_connector iteration 751 * @connector: &struct drm_connector iteration cursor
800 * @old_connector_state: &struct drm_connector 752 * @old_connector_state: &struct drm_connector_state iteration cursor for the
801 * old state 753 * old state
802 * @new_connector_state: &struct drm_connector 754 * @new_connector_state: &struct drm_connector_state iteration cursor for the
803 * new state 755 * new state
804 * @__i: int iteration cursor, for macro-inter 756 * @__i: int iteration cursor, for macro-internal use
805 * 757 *
806 * This iterates over all connectors in an ato 758 * This iterates over all connectors in an atomic update, tracking both old and
807 * new state. This is useful in places where t 759 * new state. This is useful in places where the state delta needs to be
808 * considered, for example in atomic check fun 760 * considered, for example in atomic check functions.
809 */ 761 */
810 #define for_each_oldnew_connector_in_state(__s 762 #define for_each_oldnew_connector_in_state(__state, connector, old_connector_state, new_connector_state, __i) \
811 for ((__i) = 0; 763 for ((__i) = 0; \
812 (__i) < (__state)->num_connector; 764 (__i) < (__state)->num_connector; \
813 (__i)++) 765 (__i)++) \
814 for_each_if ((__state)->connec 766 for_each_if ((__state)->connectors[__i].ptr && \
815 ((connector) = (_ 767 ((connector) = (__state)->connectors[__i].ptr, \
816 (void)(connector) 768 (void)(connector) /* Only to avoid unused-but-set-variable warning */, \
817 (old_connector_st 769 (old_connector_state) = (__state)->connectors[__i].old_state, \
818 (new_connector_st 770 (new_connector_state) = (__state)->connectors[__i].new_state, 1))
819 771
820 /** 772 /**
821 * for_each_old_connector_in_state - iterate o 773 * for_each_old_connector_in_state - iterate over all connectors in an atomic update
822 * @__state: &struct drm_atomic_state pointer 774 * @__state: &struct drm_atomic_state pointer
823 * @connector: &struct drm_connector iteration 775 * @connector: &struct drm_connector iteration cursor
824 * @old_connector_state: &struct drm_connector 776 * @old_connector_state: &struct drm_connector_state iteration cursor for the
825 * old state 777 * old state
826 * @__i: int iteration cursor, for macro-inter 778 * @__i: int iteration cursor, for macro-internal use
827 * 779 *
828 * This iterates over all connectors in an ato 780 * This iterates over all connectors in an atomic update, tracking only the old
829 * state. This is useful in disable functions, 781 * state. This is useful in disable functions, where we need the old state the
830 * hardware is still in. 782 * hardware is still in.
831 */ 783 */
832 #define for_each_old_connector_in_state(__stat 784 #define for_each_old_connector_in_state(__state, connector, old_connector_state, __i) \
833 for ((__i) = 0; 785 for ((__i) = 0; \
834 (__i) < (__state)->num_connector; 786 (__i) < (__state)->num_connector; \
835 (__i)++) 787 (__i)++) \
836 for_each_if ((__state)->connec 788 for_each_if ((__state)->connectors[__i].ptr && \
837 ((connector) = (_ 789 ((connector) = (__state)->connectors[__i].ptr, \
838 (void)(connector) 790 (void)(connector) /* Only to avoid unused-but-set-variable warning */, \
839 (old_connector_st 791 (old_connector_state) = (__state)->connectors[__i].old_state, 1))
840 792
841 /** 793 /**
842 * for_each_new_connector_in_state - iterate o 794 * for_each_new_connector_in_state - iterate over all connectors in an atomic update
843 * @__state: &struct drm_atomic_state pointer 795 * @__state: &struct drm_atomic_state pointer
844 * @connector: &struct drm_connector iteration 796 * @connector: &struct drm_connector iteration cursor
845 * @new_connector_state: &struct drm_connector 797 * @new_connector_state: &struct drm_connector_state iteration cursor for the
846 * new state 798 * new state
847 * @__i: int iteration cursor, for macro-inter 799 * @__i: int iteration cursor, for macro-internal use
848 * 800 *
849 * This iterates over all connectors in an ato 801 * This iterates over all connectors in an atomic update, tracking only the new
850 * state. This is useful in enable functions, 802 * state. This is useful in enable functions, where we need the new state the
851 * hardware should be in when the atomic commi 803 * hardware should be in when the atomic commit operation has completed.
852 */ 804 */
853 #define for_each_new_connector_in_state(__stat 805 #define for_each_new_connector_in_state(__state, connector, new_connector_state, __i) \
854 for ((__i) = 0; 806 for ((__i) = 0; \
855 (__i) < (__state)->num_connector; 807 (__i) < (__state)->num_connector; \
856 (__i)++) 808 (__i)++) \
857 for_each_if ((__state)->connec 809 for_each_if ((__state)->connectors[__i].ptr && \
858 ((connector) = (_ 810 ((connector) = (__state)->connectors[__i].ptr, \
859 (void)(connector) 811 (void)(connector) /* Only to avoid unused-but-set-variable warning */, \
860 (new_connector_st 812 (new_connector_state) = (__state)->connectors[__i].new_state, \
861 (void)(new_connec 813 (void)(new_connector_state) /* Only to avoid unused-but-set-variable warning */, 1))
862 814
863 /** 815 /**
864 * for_each_oldnew_crtc_in_state - iterate ove 816 * for_each_oldnew_crtc_in_state - iterate over all CRTCs in an atomic update
865 * @__state: &struct drm_atomic_state pointer 817 * @__state: &struct drm_atomic_state pointer
866 * @crtc: &struct drm_crtc iteration cursor 818 * @crtc: &struct drm_crtc iteration cursor
867 * @old_crtc_state: &struct drm_crtc_state ite 819 * @old_crtc_state: &struct drm_crtc_state iteration cursor for the old state
868 * @new_crtc_state: &struct drm_crtc_state ite 820 * @new_crtc_state: &struct drm_crtc_state iteration cursor for the new state
869 * @__i: int iteration cursor, for macro-inter 821 * @__i: int iteration cursor, for macro-internal use
870 * 822 *
871 * This iterates over all CRTCs in an atomic u 823 * This iterates over all CRTCs in an atomic update, tracking both old and
872 * new state. This is useful in places where t 824 * new state. This is useful in places where the state delta needs to be
873 * considered, for example in atomic check fun 825 * considered, for example in atomic check functions.
874 */ 826 */
875 #define for_each_oldnew_crtc_in_state(__state, 827 #define for_each_oldnew_crtc_in_state(__state, crtc, old_crtc_state, new_crtc_state, __i) \
876 for ((__i) = 0; 828 for ((__i) = 0; \
877 (__i) < (__state)->dev->mode_conf 829 (__i) < (__state)->dev->mode_config.num_crtc; \
878 (__i)++) 830 (__i)++) \
879 for_each_if ((__state)->crtcs[ 831 for_each_if ((__state)->crtcs[__i].ptr && \
880 ((crtc) = (__stat 832 ((crtc) = (__state)->crtcs[__i].ptr, \
881 (void)(crtc) /* 833 (void)(crtc) /* Only to avoid unused-but-set-variable warning */, \
882 (old_crtc_state) 834 (old_crtc_state) = (__state)->crtcs[__i].old_state, \
883 (void)(old_crtc_s 835 (void)(old_crtc_state) /* Only to avoid unused-but-set-variable warning */, \
884 (new_crtc_state) 836 (new_crtc_state) = (__state)->crtcs[__i].new_state, \
885 (void)(new_crtc_s 837 (void)(new_crtc_state) /* Only to avoid unused-but-set-variable warning */, 1))
886 838
887 /** 839 /**
888 * for_each_old_crtc_in_state - iterate over a 840 * for_each_old_crtc_in_state - iterate over all CRTCs in an atomic update
889 * @__state: &struct drm_atomic_state pointer 841 * @__state: &struct drm_atomic_state pointer
890 * @crtc: &struct drm_crtc iteration cursor 842 * @crtc: &struct drm_crtc iteration cursor
891 * @old_crtc_state: &struct drm_crtc_state ite 843 * @old_crtc_state: &struct drm_crtc_state iteration cursor for the old state
892 * @__i: int iteration cursor, for macro-inter 844 * @__i: int iteration cursor, for macro-internal use
893 * 845 *
894 * This iterates over all CRTCs in an atomic u 846 * This iterates over all CRTCs in an atomic update, tracking only the old
895 * state. This is useful in disable functions, 847 * state. This is useful in disable functions, where we need the old state the
896 * hardware is still in. 848 * hardware is still in.
897 */ 849 */
898 #define for_each_old_crtc_in_state(__state, cr 850 #define for_each_old_crtc_in_state(__state, crtc, old_crtc_state, __i) \
899 for ((__i) = 0; 851 for ((__i) = 0; \
900 (__i) < (__state)->dev->mode_conf 852 (__i) < (__state)->dev->mode_config.num_crtc; \
901 (__i)++) 853 (__i)++) \
902 for_each_if ((__state)->crtcs[ 854 for_each_if ((__state)->crtcs[__i].ptr && \
903 ((crtc) = (__stat 855 ((crtc) = (__state)->crtcs[__i].ptr, \
904 (void)(crtc) /* O 856 (void)(crtc) /* Only to avoid unused-but-set-variable warning */, \
905 (old_crtc_state) 857 (old_crtc_state) = (__state)->crtcs[__i].old_state, 1))
906 858
907 /** 859 /**
908 * for_each_new_crtc_in_state - iterate over a 860 * for_each_new_crtc_in_state - iterate over all CRTCs in an atomic update
909 * @__state: &struct drm_atomic_state pointer 861 * @__state: &struct drm_atomic_state pointer
910 * @crtc: &struct drm_crtc iteration cursor 862 * @crtc: &struct drm_crtc iteration cursor
911 * @new_crtc_state: &struct drm_crtc_state ite 863 * @new_crtc_state: &struct drm_crtc_state iteration cursor for the new state
912 * @__i: int iteration cursor, for macro-inter 864 * @__i: int iteration cursor, for macro-internal use
913 * 865 *
914 * This iterates over all CRTCs in an atomic u 866 * This iterates over all CRTCs in an atomic update, tracking only the new
915 * state. This is useful in enable functions, 867 * state. This is useful in enable functions, where we need the new state the
916 * hardware should be in when the atomic commi 868 * hardware should be in when the atomic commit operation has completed.
917 */ 869 */
918 #define for_each_new_crtc_in_state(__state, cr 870 #define for_each_new_crtc_in_state(__state, crtc, new_crtc_state, __i) \
919 for ((__i) = 0; 871 for ((__i) = 0; \
920 (__i) < (__state)->dev->mode_conf 872 (__i) < (__state)->dev->mode_config.num_crtc; \
921 (__i)++) 873 (__i)++) \
922 for_each_if ((__state)->crtcs[ 874 for_each_if ((__state)->crtcs[__i].ptr && \
923 ((crtc) = (__stat 875 ((crtc) = (__state)->crtcs[__i].ptr, \
924 (void)(crtc) /* O 876 (void)(crtc) /* Only to avoid unused-but-set-variable warning */, \
925 (new_crtc_state) 877 (new_crtc_state) = (__state)->crtcs[__i].new_state, \
926 (void)(new_crtc_s 878 (void)(new_crtc_state) /* Only to avoid unused-but-set-variable warning */, 1))
927 879
928 /** 880 /**
929 * for_each_oldnew_plane_in_state - iterate ov 881 * for_each_oldnew_plane_in_state - iterate over all planes in an atomic update
930 * @__state: &struct drm_atomic_state pointer 882 * @__state: &struct drm_atomic_state pointer
931 * @plane: &struct drm_plane iteration cursor 883 * @plane: &struct drm_plane iteration cursor
932 * @old_plane_state: &struct drm_plane_state i 884 * @old_plane_state: &struct drm_plane_state iteration cursor for the old state
933 * @new_plane_state: &struct drm_plane_state i 885 * @new_plane_state: &struct drm_plane_state iteration cursor for the new state
934 * @__i: int iteration cursor, for macro-inter 886 * @__i: int iteration cursor, for macro-internal use
935 * 887 *
936 * This iterates over all planes in an atomic 888 * This iterates over all planes in an atomic update, tracking both old and
937 * new state. This is useful in places where t 889 * new state. This is useful in places where the state delta needs to be
938 * considered, for example in atomic check fun 890 * considered, for example in atomic check functions.
939 */ 891 */
940 #define for_each_oldnew_plane_in_state(__state 892 #define for_each_oldnew_plane_in_state(__state, plane, old_plane_state, new_plane_state, __i) \
941 for ((__i) = 0; 893 for ((__i) = 0; \
942 (__i) < (__state)->dev->mode_conf 894 (__i) < (__state)->dev->mode_config.num_total_plane; \
943 (__i)++) 895 (__i)++) \
944 for_each_if ((__state)->planes 896 for_each_if ((__state)->planes[__i].ptr && \
945 ((plane) = (__sta 897 ((plane) = (__state)->planes[__i].ptr, \
946 (void)(plane) /* 898 (void)(plane) /* Only to avoid unused-but-set-variable warning */, \
947 (old_plane_state 899 (old_plane_state) = (__state)->planes[__i].old_state,\
948 (new_plane_state 900 (new_plane_state) = (__state)->planes[__i].new_state, 1))
949 901
950 /** 902 /**
951 * for_each_oldnew_plane_in_state_reverse - it 903 * for_each_oldnew_plane_in_state_reverse - iterate over all planes in an atomic
952 * update in reverse order 904 * update in reverse order
953 * @__state: &struct drm_atomic_state pointer 905 * @__state: &struct drm_atomic_state pointer
954 * @plane: &struct drm_plane iteration cursor 906 * @plane: &struct drm_plane iteration cursor
955 * @old_plane_state: &struct drm_plane_state i 907 * @old_plane_state: &struct drm_plane_state iteration cursor for the old state
956 * @new_plane_state: &struct drm_plane_state i 908 * @new_plane_state: &struct drm_plane_state iteration cursor for the new state
957 * @__i: int iteration cursor, for macro-inter 909 * @__i: int iteration cursor, for macro-internal use
958 * 910 *
959 * This iterates over all planes in an atomic 911 * This iterates over all planes in an atomic update in reverse order,
960 * tracking both old and new state. This is u 912 * tracking both old and new state. This is useful in places where the
961 * state delta needs to be considered, for exa 913 * state delta needs to be considered, for example in atomic check functions.
962 */ 914 */
963 #define for_each_oldnew_plane_in_state_reverse 915 #define for_each_oldnew_plane_in_state_reverse(__state, plane, old_plane_state, new_plane_state, __i) \
964 for ((__i) = ((__state)->dev->mode_con 916 for ((__i) = ((__state)->dev->mode_config.num_total_plane - 1); \
965 (__i) >= 0; 917 (__i) >= 0; \
966 (__i)--) 918 (__i)--) \
967 for_each_if ((__state)->planes 919 for_each_if ((__state)->planes[__i].ptr && \
968 ((plane) = (__sta 920 ((plane) = (__state)->planes[__i].ptr, \
969 (old_plane_state 921 (old_plane_state) = (__state)->planes[__i].old_state,\
970 (new_plane_state 922 (new_plane_state) = (__state)->planes[__i].new_state, 1))
971 923
972 /** 924 /**
973 * for_each_new_plane_in_state_reverse - other 925 * for_each_new_plane_in_state_reverse - other than only tracking new state,
974 * it's the same as for_each_oldnew_plane_in_s 926 * it's the same as for_each_oldnew_plane_in_state_reverse
975 * @__state: &struct drm_atomic_state pointer 927 * @__state: &struct drm_atomic_state pointer
976 * @plane: &struct drm_plane iteration cursor 928 * @plane: &struct drm_plane iteration cursor
977 * @new_plane_state: &struct drm_plane_state i 929 * @new_plane_state: &struct drm_plane_state iteration cursor for the new state
978 * @__i: int iteration cursor, for macro-inter 930 * @__i: int iteration cursor, for macro-internal use
979 */ 931 */
980 #define for_each_new_plane_in_state_reverse(__ 932 #define for_each_new_plane_in_state_reverse(__state, plane, new_plane_state, __i) \
981 for ((__i) = ((__state)->dev->mode_con 933 for ((__i) = ((__state)->dev->mode_config.num_total_plane - 1); \
982 (__i) >= 0; 934 (__i) >= 0; \
983 (__i)--) 935 (__i)--) \
984 for_each_if ((__state)->planes 936 for_each_if ((__state)->planes[__i].ptr && \
985 ((plane) = (__sta 937 ((plane) = (__state)->planes[__i].ptr, \
986 (new_plane_state 938 (new_plane_state) = (__state)->planes[__i].new_state, 1))
987 939
988 /** 940 /**
989 * for_each_old_plane_in_state - iterate over 941 * for_each_old_plane_in_state - iterate over all planes in an atomic update
990 * @__state: &struct drm_atomic_state pointer 942 * @__state: &struct drm_atomic_state pointer
991 * @plane: &struct drm_plane iteration cursor 943 * @plane: &struct drm_plane iteration cursor
992 * @old_plane_state: &struct drm_plane_state i 944 * @old_plane_state: &struct drm_plane_state iteration cursor for the old state
993 * @__i: int iteration cursor, for macro-inter 945 * @__i: int iteration cursor, for macro-internal use
994 * 946 *
995 * This iterates over all planes in an atomic 947 * This iterates over all planes in an atomic update, tracking only the old
996 * state. This is useful in disable functions, 948 * state. This is useful in disable functions, where we need the old state the
997 * hardware is still in. 949 * hardware is still in.
998 */ 950 */
999 #define for_each_old_plane_in_state(__state, p 951 #define for_each_old_plane_in_state(__state, plane, old_plane_state, __i) \
1000 for ((__i) = 0; 952 for ((__i) = 0; \
1001 (__i) < (__state)->dev->mode_con 953 (__i) < (__state)->dev->mode_config.num_total_plane; \
1002 (__i)++) 954 (__i)++) \
1003 for_each_if ((__state)->plane 955 for_each_if ((__state)->planes[__i].ptr && \
1004 ((plane) = (__st 956 ((plane) = (__state)->planes[__i].ptr, \
1005 (old_plane_stat 957 (old_plane_state) = (__state)->planes[__i].old_state, 1))
1006 /** 958 /**
1007 * for_each_new_plane_in_state - iterate over 959 * for_each_new_plane_in_state - iterate over all planes in an atomic update
1008 * @__state: &struct drm_atomic_state pointer 960 * @__state: &struct drm_atomic_state pointer
1009 * @plane: &struct drm_plane iteration cursor 961 * @plane: &struct drm_plane iteration cursor
1010 * @new_plane_state: &struct drm_plane_state 962 * @new_plane_state: &struct drm_plane_state iteration cursor for the new state
1011 * @__i: int iteration cursor, for macro-inte 963 * @__i: int iteration cursor, for macro-internal use
1012 * 964 *
1013 * This iterates over all planes in an atomic 965 * This iterates over all planes in an atomic update, tracking only the new
1014 * state. This is useful in enable functions, 966 * state. This is useful in enable functions, where we need the new state the
1015 * hardware should be in when the atomic comm 967 * hardware should be in when the atomic commit operation has completed.
1016 */ 968 */
1017 #define for_each_new_plane_in_state(__state, 969 #define for_each_new_plane_in_state(__state, plane, new_plane_state, __i) \
1018 for ((__i) = 0; 970 for ((__i) = 0; \
1019 (__i) < (__state)->dev->mode_con 971 (__i) < (__state)->dev->mode_config.num_total_plane; \
1020 (__i)++) 972 (__i)++) \
1021 for_each_if ((__state)->plane 973 for_each_if ((__state)->planes[__i].ptr && \
1022 ((plane) = (__st 974 ((plane) = (__state)->planes[__i].ptr, \
1023 (void)(plane) / 975 (void)(plane) /* Only to avoid unused-but-set-variable warning */, \
1024 (new_plane_stat 976 (new_plane_state) = (__state)->planes[__i].new_state, \
1025 (void)(new_plan 977 (void)(new_plane_state) /* Only to avoid unused-but-set-variable warning */, 1))
1026 978
1027 /** 979 /**
1028 * for_each_oldnew_private_obj_in_state - ite 980 * for_each_oldnew_private_obj_in_state - iterate over all private objects in an atomic update
1029 * @__state: &struct drm_atomic_state pointer 981 * @__state: &struct drm_atomic_state pointer
1030 * @obj: &struct drm_private_obj iteration cu 982 * @obj: &struct drm_private_obj iteration cursor
1031 * @old_obj_state: &struct drm_private_state 983 * @old_obj_state: &struct drm_private_state iteration cursor for the old state
1032 * @new_obj_state: &struct drm_private_state 984 * @new_obj_state: &struct drm_private_state iteration cursor for the new state
1033 * @__i: int iteration cursor, for macro-inte 985 * @__i: int iteration cursor, for macro-internal use
1034 * 986 *
1035 * This iterates over all private objects in 987 * This iterates over all private objects in an atomic update, tracking both
1036 * old and new state. This is useful in place 988 * old and new state. This is useful in places where the state delta needs
1037 * to be considered, for example in atomic ch 989 * to be considered, for example in atomic check functions.
1038 */ 990 */
1039 #define for_each_oldnew_private_obj_in_state( 991 #define for_each_oldnew_private_obj_in_state(__state, obj, old_obj_state, new_obj_state, __i) \
1040 for ((__i) = 0; \ 992 for ((__i) = 0; \
1041 (__i) < (__state)->num_private_o 993 (__i) < (__state)->num_private_objs && \
1042 ((obj) = (__state)->priv 994 ((obj) = (__state)->private_objs[__i].ptr, \
1043 (old_obj_state) = (__st 995 (old_obj_state) = (__state)->private_objs[__i].old_state, \
1044 (new_obj_state) = (__st 996 (new_obj_state) = (__state)->private_objs[__i].new_state, 1); \
1045 (__i)++) 997 (__i)++)
1046 998
1047 /** 999 /**
1048 * for_each_old_private_obj_in_state - iterat 1000 * for_each_old_private_obj_in_state - iterate over all private objects in an atomic update
1049 * @__state: &struct drm_atomic_state pointer 1001 * @__state: &struct drm_atomic_state pointer
1050 * @obj: &struct drm_private_obj iteration cu 1002 * @obj: &struct drm_private_obj iteration cursor
1051 * @old_obj_state: &struct drm_private_state 1003 * @old_obj_state: &struct drm_private_state iteration cursor for the old state
1052 * @__i: int iteration cursor, for macro-inte 1004 * @__i: int iteration cursor, for macro-internal use
1053 * 1005 *
1054 * This iterates over all private objects in 1006 * This iterates over all private objects in an atomic update, tracking only
1055 * the old state. This is useful in disable f 1007 * the old state. This is useful in disable functions, where we need the old
1056 * state the hardware is still in. 1008 * state the hardware is still in.
1057 */ 1009 */
1058 #define for_each_old_private_obj_in_state(__s 1010 #define for_each_old_private_obj_in_state(__state, obj, old_obj_state, __i) \
1059 for ((__i) = 0; \ 1011 for ((__i) = 0; \
1060 (__i) < (__state)->num_private_o 1012 (__i) < (__state)->num_private_objs && \
1061 ((obj) = (__state)->priv 1013 ((obj) = (__state)->private_objs[__i].ptr, \
1062 (old_obj_state) = (__st 1014 (old_obj_state) = (__state)->private_objs[__i].old_state, 1); \
1063 (__i)++) 1015 (__i)++)
1064 1016
1065 /** 1017 /**
1066 * for_each_new_private_obj_in_state - iterat 1018 * for_each_new_private_obj_in_state - iterate over all private objects in an atomic update
1067 * @__state: &struct drm_atomic_state pointer 1019 * @__state: &struct drm_atomic_state pointer
1068 * @obj: &struct drm_private_obj iteration cu 1020 * @obj: &struct drm_private_obj iteration cursor
1069 * @new_obj_state: &struct drm_private_state 1021 * @new_obj_state: &struct drm_private_state iteration cursor for the new state
1070 * @__i: int iteration cursor, for macro-inte 1022 * @__i: int iteration cursor, for macro-internal use
1071 * 1023 *
1072 * This iterates over all private objects in 1024 * This iterates over all private objects in an atomic update, tracking only
1073 * the new state. This is useful in enable fu 1025 * the new state. This is useful in enable functions, where we need the new state the
1074 * hardware should be in when the atomic comm 1026 * hardware should be in when the atomic commit operation has completed.
1075 */ 1027 */
1076 #define for_each_new_private_obj_in_state(__s 1028 #define for_each_new_private_obj_in_state(__state, obj, new_obj_state, __i) \
1077 for ((__i) = 0; \ 1029 for ((__i) = 0; \
1078 (__i) < (__state)->num_private_o 1030 (__i) < (__state)->num_private_objs && \
1079 ((obj) = (__state)->priv 1031 ((obj) = (__state)->private_objs[__i].ptr, \
1080 (void)(obj) /* Only to 1032 (void)(obj) /* Only to avoid unused-but-set-variable warning */, \
1081 (new_obj_state) = (__st 1033 (new_obj_state) = (__state)->private_objs[__i].new_state, 1); \
1082 (__i)++) 1034 (__i)++)
1083 1035
1084 /** 1036 /**
1085 * drm_atomic_crtc_needs_modeset - compute co 1037 * drm_atomic_crtc_needs_modeset - compute combined modeset need
1086 * @state: &drm_crtc_state for the CRTC 1038 * @state: &drm_crtc_state for the CRTC
1087 * 1039 *
1088 * To give drivers flexibility &struct drm_cr 1040 * To give drivers flexibility &struct drm_crtc_state has 3 booleans to track
1089 * whether the state CRTC changed enough to n 1041 * whether the state CRTC changed enough to need a full modeset cycle:
1090 * mode_changed, active_changed and connector 1042 * mode_changed, active_changed and connectors_changed. This helper simply
1091 * combines these three to compute the overal 1043 * combines these three to compute the overall need for a modeset for @state.
1092 * 1044 *
1093 * The atomic helper code sets these booleans 1045 * The atomic helper code sets these booleans, but drivers can and should
1094 * change them appropriately to accurately re 1046 * change them appropriately to accurately represent whether a modeset is
1095 * really needed. In general, drivers should 1047 * really needed. In general, drivers should avoid full modesets whenever
1096 * possible. 1048 * possible.
1097 * 1049 *
1098 * For example if the CRTC mode has changed, 1050 * For example if the CRTC mode has changed, and the hardware is able to enact
1099 * the requested mode change without going th 1051 * the requested mode change without going through a full modeset, the driver
1100 * should clear mode_changed in its &drm_mode 1052 * should clear mode_changed in its &drm_mode_config_funcs.atomic_check
1101 * implementation. 1053 * implementation.
1102 */ 1054 */
1103 static inline bool 1055 static inline bool
1104 drm_atomic_crtc_needs_modeset(const struct dr 1056 drm_atomic_crtc_needs_modeset(const struct drm_crtc_state *state)
1105 { 1057 {
1106 return state->mode_changed || state-> 1058 return state->mode_changed || state->active_changed ||
1107 state->connectors_changed; 1059 state->connectors_changed;
1108 } 1060 }
1109 1061
1110 /** 1062 /**
1111 * drm_atomic_crtc_effectively_active - compu 1063 * drm_atomic_crtc_effectively_active - compute whether CRTC is actually active
1112 * @state: &drm_crtc_state for the CRTC 1064 * @state: &drm_crtc_state for the CRTC
1113 * 1065 *
1114 * When in self refresh mode, the crtc_state- 1066 * When in self refresh mode, the crtc_state->active value will be false, since
1115 * the CRTC is off. However in some cases we' 1067 * the CRTC is off. However in some cases we're interested in whether the CRTC
1116 * is active, or effectively active (ie: it's 1068 * is active, or effectively active (ie: it's connected to an active display).
1117 * In these cases, use this function instead 1069 * In these cases, use this function instead of just checking active.
1118 */ 1070 */
1119 static inline bool 1071 static inline bool
1120 drm_atomic_crtc_effectively_active(const stru 1072 drm_atomic_crtc_effectively_active(const struct drm_crtc_state *state)
1121 { 1073 {
1122 return state->active || state->self_r 1074 return state->active || state->self_refresh_active;
1123 } 1075 }
1124 1076
1125 /** 1077 /**
1126 * struct drm_bus_cfg - bus configuration 1078 * struct drm_bus_cfg - bus configuration
1127 * 1079 *
1128 * This structure stores the configuration of 1080 * This structure stores the configuration of a physical bus between two
1129 * components in an output pipeline, usually 1081 * components in an output pipeline, usually between two bridges, an encoder
1130 * and a bridge, or a bridge and a connector. 1082 * and a bridge, or a bridge and a connector.
1131 * 1083 *
1132 * The bus configuration is stored in &drm_br 1084 * The bus configuration is stored in &drm_bridge_state separately for the
1133 * input and output buses, as seen from the p 1085 * input and output buses, as seen from the point of view of each bridge. The
1134 * bus configuration of a bridge output is us 1086 * bus configuration of a bridge output is usually identical to the
1135 * configuration of the next bridge's input, 1087 * configuration of the next bridge's input, but may differ if the signals are
1136 * modified between the two bridges, for inst 1088 * modified between the two bridges, for instance by an inverter on the board.
1137 * The input and output configurations of a b 1089 * The input and output configurations of a bridge may differ if the bridge
1138 * modifies the signals internally, for insta 1090 * modifies the signals internally, for instance by performing format
1139 * conversion, or modifying signals polaritie 1091 * conversion, or modifying signals polarities.
1140 */ 1092 */
1141 struct drm_bus_cfg { 1093 struct drm_bus_cfg {
1142 /** 1094 /**
1143 * @format: format used on this bus ( 1095 * @format: format used on this bus (one of the MEDIA_BUS_FMT_* format)
1144 * 1096 *
1145 * This field should not be directly 1097 * This field should not be directly modified by drivers
1146 * (drm_atomic_bridge_chain_select_bu 1098 * (drm_atomic_bridge_chain_select_bus_fmts() takes care of the bus
1147 * format negotiation). 1099 * format negotiation).
1148 */ 1100 */
1149 u32 format; 1101 u32 format;
1150 1102
1151 /** 1103 /**
1152 * @flags: DRM_BUS_* flags used on th 1104 * @flags: DRM_BUS_* flags used on this bus
1153 */ 1105 */
1154 u32 flags; 1106 u32 flags;
1155 }; 1107 };
1156 1108
1157 /** 1109 /**
1158 * struct drm_bridge_state - Atomic bridge st 1110 * struct drm_bridge_state - Atomic bridge state object
1159 */ 1111 */
1160 struct drm_bridge_state { 1112 struct drm_bridge_state {
1161 /** 1113 /**
1162 * @base: inherit from &drm_private_s 1114 * @base: inherit from &drm_private_state
1163 */ 1115 */
1164 struct drm_private_state base; 1116 struct drm_private_state base;
1165 1117
1166 /** 1118 /**
1167 * @bridge: the bridge this state ref 1119 * @bridge: the bridge this state refers to
1168 */ 1120 */
1169 struct drm_bridge *bridge; 1121 struct drm_bridge *bridge;
1170 1122
1171 /** 1123 /**
1172 * @input_bus_cfg: input bus configur 1124 * @input_bus_cfg: input bus configuration
1173 */ 1125 */
1174 struct drm_bus_cfg input_bus_cfg; 1126 struct drm_bus_cfg input_bus_cfg;
1175 1127
1176 /** 1128 /**
1177 * @output_bus_cfg: output bus config 1129 * @output_bus_cfg: output bus configuration
1178 */ 1130 */
1179 struct drm_bus_cfg output_bus_cfg; 1131 struct drm_bus_cfg output_bus_cfg;
1180 }; 1132 };
1181 1133
1182 static inline struct drm_bridge_state * 1134 static inline struct drm_bridge_state *
1183 drm_priv_to_bridge_state(struct drm_private_s 1135 drm_priv_to_bridge_state(struct drm_private_state *priv)
1184 { 1136 {
1185 return container_of(priv, struct drm_ 1137 return container_of(priv, struct drm_bridge_state, base);
1186 } 1138 }
1187 1139
1188 struct drm_bridge_state * 1140 struct drm_bridge_state *
1189 drm_atomic_get_bridge_state(struct drm_atomic 1141 drm_atomic_get_bridge_state(struct drm_atomic_state *state,
1190 struct drm_bridge 1142 struct drm_bridge *bridge);
1191 struct drm_bridge_state * 1143 struct drm_bridge_state *
1192 drm_atomic_get_old_bridge_state(const struct 1144 drm_atomic_get_old_bridge_state(const struct drm_atomic_state *state,
1193 struct drm_br 1145 struct drm_bridge *bridge);
1194 struct drm_bridge_state * 1146 struct drm_bridge_state *
1195 drm_atomic_get_new_bridge_state(const struct 1147 drm_atomic_get_new_bridge_state(const struct drm_atomic_state *state,
1196 struct drm_br 1148 struct drm_bridge *bridge);
1197 1149
1198 #endif /* DRM_ATOMIC_H_ */ 1150 #endif /* DRM_ATOMIC_H_ */
1199 1151
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.