Commit | Line | Data |
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f453ba04 DA |
1 | /* |
2 | * Copyright (c) 2006-2008 Intel Corporation | |
3 | * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> | |
4 | * Copyright (c) 2008 Red Hat Inc. | |
5 | * | |
6 | * DRM core CRTC related functions | |
7 | * | |
8 | * Permission to use, copy, modify, distribute, and sell this software and its | |
9 | * documentation for any purpose is hereby granted without fee, provided that | |
10 | * the above copyright notice appear in all copies and that both that copyright | |
11 | * notice and this permission notice appear in supporting documentation, and | |
12 | * that the name of the copyright holders not be used in advertising or | |
13 | * publicity pertaining to distribution of the software without specific, | |
14 | * written prior permission. The copyright holders make no representations | |
15 | * about the suitability of this software for any purpose. It is provided "as | |
16 | * is" without express or implied warranty. | |
17 | * | |
18 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
19 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
20 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
21 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
22 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
23 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
24 | * OF THIS SOFTWARE. | |
25 | * | |
26 | * Authors: | |
27 | * Keith Packard | |
28 | * Eric Anholt <eric@anholt.net> | |
29 | * Dave Airlie <airlied@linux.ie> | |
30 | * Jesse Barnes <jesse.barnes@intel.com> | |
31 | */ | |
6ba6d03e | 32 | #include <linux/ctype.h> |
f453ba04 | 33 | #include <linux/list.h> |
5a0e3ad6 | 34 | #include <linux/slab.h> |
2d1a8a48 | 35 | #include <linux/export.h> |
760285e7 DH |
36 | #include <drm/drmP.h> |
37 | #include <drm/drm_crtc.h> | |
38 | #include <drm/drm_edid.h> | |
39 | #include <drm/drm_fourcc.h> | |
51fd371b | 40 | #include <drm/drm_modeset_lock.h> |
f453ba04 | 41 | |
8bd441b2 | 42 | #include "drm_crtc_internal.h" |
67d0ec4e | 43 | #include "drm_internal.h" |
8bd441b2 | 44 | |
c394c2b0 MR |
45 | static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev, |
46 | struct drm_mode_fb_cmd2 *r, | |
47 | struct drm_file *file_priv); | |
48 | ||
f453ba04 DA |
49 | /* Avoid boilerplate. I'm tired of typing. */ |
50 | #define DRM_ENUM_NAME_FN(fnname, list) \ | |
d20d3174 | 51 | const char *fnname(int val) \ |
f453ba04 DA |
52 | { \ |
53 | int i; \ | |
54 | for (i = 0; i < ARRAY_SIZE(list); i++) { \ | |
55 | if (list[i].type == val) \ | |
56 | return list[i].name; \ | |
57 | } \ | |
58 | return "(unknown)"; \ | |
59 | } | |
60 | ||
61 | /* | |
62 | * Global properties | |
63 | */ | |
d20d3174 | 64 | static const struct drm_prop_enum_list drm_dpms_enum_list[] = |
f453ba04 DA |
65 | { { DRM_MODE_DPMS_ON, "On" }, |
66 | { DRM_MODE_DPMS_STANDBY, "Standby" }, | |
67 | { DRM_MODE_DPMS_SUSPEND, "Suspend" }, | |
68 | { DRM_MODE_DPMS_OFF, "Off" } | |
69 | }; | |
70 | ||
71 | DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list) | |
72 | ||
9922ab5a RC |
73 | static const struct drm_prop_enum_list drm_plane_type_enum_list[] = |
74 | { | |
75 | { DRM_PLANE_TYPE_OVERLAY, "Overlay" }, | |
76 | { DRM_PLANE_TYPE_PRIMARY, "Primary" }, | |
77 | { DRM_PLANE_TYPE_CURSOR, "Cursor" }, | |
78 | }; | |
79 | ||
f453ba04 DA |
80 | /* |
81 | * Optional properties | |
82 | */ | |
d20d3174 | 83 | static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = |
f453ba04 | 84 | { |
53bd8389 JB |
85 | { DRM_MODE_SCALE_NONE, "None" }, |
86 | { DRM_MODE_SCALE_FULLSCREEN, "Full" }, | |
87 | { DRM_MODE_SCALE_CENTER, "Center" }, | |
88 | { DRM_MODE_SCALE_ASPECT, "Full aspect" }, | |
f453ba04 DA |
89 | }; |
90 | ||
ff587e45 VK |
91 | static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = { |
92 | { DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" }, | |
93 | { DRM_MODE_PICTURE_ASPECT_4_3, "4:3" }, | |
94 | { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" }, | |
95 | }; | |
96 | ||
f453ba04 DA |
97 | /* |
98 | * Non-global properties, but "required" for certain connectors. | |
99 | */ | |
d20d3174 | 100 | static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = |
f453ba04 DA |
101 | { |
102 | { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ | |
103 | { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ | |
104 | { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ | |
105 | }; | |
106 | ||
107 | DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list) | |
108 | ||
d20d3174 | 109 | static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = |
f453ba04 DA |
110 | { |
111 | { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ | |
112 | { DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */ | |
113 | { DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */ | |
114 | }; | |
115 | ||
116 | DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name, | |
117 | drm_dvi_i_subconnector_enum_list) | |
118 | ||
d20d3174 | 119 | static const struct drm_prop_enum_list drm_tv_select_enum_list[] = |
f453ba04 DA |
120 | { |
121 | { DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */ | |
122 | { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ | |
123 | { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ | |
124 | { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ | |
aeaa1ad3 | 125 | { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ |
f453ba04 DA |
126 | }; |
127 | ||
128 | DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list) | |
129 | ||
d20d3174 | 130 | static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = |
f453ba04 DA |
131 | { |
132 | { DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */ | |
133 | { DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */ | |
134 | { DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */ | |
135 | { DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */ | |
aeaa1ad3 | 136 | { DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */ |
f453ba04 DA |
137 | }; |
138 | ||
139 | DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name, | |
140 | drm_tv_subconnector_enum_list) | |
141 | ||
d20d3174 | 142 | static const struct drm_prop_enum_list drm_dirty_info_enum_list[] = { |
884840aa JB |
143 | { DRM_MODE_DIRTY_OFF, "Off" }, |
144 | { DRM_MODE_DIRTY_ON, "On" }, | |
145 | { DRM_MODE_DIRTY_ANNOTATE, "Annotate" }, | |
146 | }; | |
147 | ||
f453ba04 DA |
148 | struct drm_conn_prop_enum_list { |
149 | int type; | |
d20d3174 | 150 | const char *name; |
b21e3afe | 151 | struct ida ida; |
f453ba04 DA |
152 | }; |
153 | ||
154 | /* | |
155 | * Connector and encoder types. | |
156 | */ | |
157 | static struct drm_conn_prop_enum_list drm_connector_enum_list[] = | |
b21e3afe IM |
158 | { { DRM_MODE_CONNECTOR_Unknown, "Unknown" }, |
159 | { DRM_MODE_CONNECTOR_VGA, "VGA" }, | |
160 | { DRM_MODE_CONNECTOR_DVII, "DVI-I" }, | |
161 | { DRM_MODE_CONNECTOR_DVID, "DVI-D" }, | |
162 | { DRM_MODE_CONNECTOR_DVIA, "DVI-A" }, | |
163 | { DRM_MODE_CONNECTOR_Composite, "Composite" }, | |
164 | { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" }, | |
165 | { DRM_MODE_CONNECTOR_LVDS, "LVDS" }, | |
166 | { DRM_MODE_CONNECTOR_Component, "Component" }, | |
167 | { DRM_MODE_CONNECTOR_9PinDIN, "DIN" }, | |
168 | { DRM_MODE_CONNECTOR_DisplayPort, "DP" }, | |
169 | { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" }, | |
170 | { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" }, | |
171 | { DRM_MODE_CONNECTOR_TV, "TV" }, | |
172 | { DRM_MODE_CONNECTOR_eDP, "eDP" }, | |
173 | { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" }, | |
b8923273 | 174 | { DRM_MODE_CONNECTOR_DSI, "DSI" }, |
f453ba04 DA |
175 | }; |
176 | ||
d20d3174 | 177 | static const struct drm_prop_enum_list drm_encoder_enum_list[] = |
f453ba04 DA |
178 | { { DRM_MODE_ENCODER_NONE, "None" }, |
179 | { DRM_MODE_ENCODER_DAC, "DAC" }, | |
180 | { DRM_MODE_ENCODER_TMDS, "TMDS" }, | |
181 | { DRM_MODE_ENCODER_LVDS, "LVDS" }, | |
182 | { DRM_MODE_ENCODER_TVDAC, "TV" }, | |
a7331e5c | 183 | { DRM_MODE_ENCODER_VIRTUAL, "Virtual" }, |
b8923273 | 184 | { DRM_MODE_ENCODER_DSI, "DSI" }, |
182407a6 | 185 | { DRM_MODE_ENCODER_DPMST, "DP MST" }, |
f453ba04 DA |
186 | }; |
187 | ||
ac1bb36c JB |
188 | static const struct drm_prop_enum_list drm_subpixel_enum_list[] = |
189 | { | |
190 | { SubPixelUnknown, "Unknown" }, | |
191 | { SubPixelHorizontalRGB, "Horizontal RGB" }, | |
192 | { SubPixelHorizontalBGR, "Horizontal BGR" }, | |
193 | { SubPixelVerticalRGB, "Vertical RGB" }, | |
194 | { SubPixelVerticalBGR, "Vertical BGR" }, | |
195 | { SubPixelNone, "None" }, | |
196 | }; | |
197 | ||
b21e3afe IM |
198 | void drm_connector_ida_init(void) |
199 | { | |
200 | int i; | |
201 | ||
202 | for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++) | |
203 | ida_init(&drm_connector_enum_list[i].ida); | |
204 | } | |
205 | ||
206 | void drm_connector_ida_destroy(void) | |
207 | { | |
208 | int i; | |
209 | ||
210 | for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++) | |
211 | ida_destroy(&drm_connector_enum_list[i].ida); | |
212 | } | |
213 | ||
c8e32cc1 DV |
214 | /** |
215 | * drm_get_connector_status_name - return a string for connector status | |
216 | * @status: connector status to compute name of | |
217 | * | |
218 | * In contrast to the other drm_get_*_name functions this one here returns a | |
219 | * const pointer and hence is threadsafe. | |
220 | */ | |
d20d3174 | 221 | const char *drm_get_connector_status_name(enum drm_connector_status status) |
f453ba04 DA |
222 | { |
223 | if (status == connector_status_connected) | |
224 | return "connected"; | |
225 | else if (status == connector_status_disconnected) | |
226 | return "disconnected"; | |
227 | else | |
228 | return "unknown"; | |
229 | } | |
ed7951dc | 230 | EXPORT_SYMBOL(drm_get_connector_status_name); |
f453ba04 | 231 | |
ac1bb36c JB |
232 | /** |
233 | * drm_get_subpixel_order_name - return a string for a given subpixel enum | |
234 | * @order: enum of subpixel_order | |
235 | * | |
236 | * Note you could abuse this and return something out of bounds, but that | |
237 | * would be a caller error. No unscrubbed user data should make it here. | |
238 | */ | |
239 | const char *drm_get_subpixel_order_name(enum subpixel_order order) | |
240 | { | |
241 | return drm_subpixel_enum_list[order].name; | |
242 | } | |
243 | EXPORT_SYMBOL(drm_get_subpixel_order_name); | |
244 | ||
6ba6d03e VS |
245 | static char printable_char(int c) |
246 | { | |
247 | return isascii(c) && isprint(c) ? c : '?'; | |
248 | } | |
249 | ||
c8e32cc1 DV |
250 | /** |
251 | * drm_get_format_name - return a string for drm fourcc format | |
252 | * @format: format to compute name of | |
253 | * | |
254 | * Note that the buffer used by this function is globally shared and owned by | |
255 | * the function itself. | |
256 | * | |
257 | * FIXME: This isn't really multithreading safe. | |
258 | */ | |
d20d3174 | 259 | const char *drm_get_format_name(uint32_t format) |
6ba6d03e VS |
260 | { |
261 | static char buf[32]; | |
262 | ||
263 | snprintf(buf, sizeof(buf), | |
264 | "%c%c%c%c %s-endian (0x%08x)", | |
265 | printable_char(format & 0xff), | |
266 | printable_char((format >> 8) & 0xff), | |
267 | printable_char((format >> 16) & 0xff), | |
268 | printable_char((format >> 24) & 0x7f), | |
269 | format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little", | |
270 | format); | |
271 | ||
272 | return buf; | |
273 | } | |
274 | EXPORT_SYMBOL(drm_get_format_name); | |
275 | ||
2ee39452 DA |
276 | /* |
277 | * Internal function to assign a slot in the object idr and optionally | |
278 | * register the object into the idr. | |
279 | */ | |
280 | static int drm_mode_object_get_reg(struct drm_device *dev, | |
281 | struct drm_mode_object *obj, | |
282 | uint32_t obj_type, | |
283 | bool register_obj) | |
284 | { | |
285 | int ret; | |
286 | ||
287 | mutex_lock(&dev->mode_config.idr_mutex); | |
288 | ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL); | |
289 | if (ret >= 0) { | |
290 | /* | |
291 | * Set up the object linking under the protection of the idr | |
292 | * lock so that other users can't see inconsistent state. | |
293 | */ | |
294 | obj->id = ret; | |
295 | obj->type = obj_type; | |
296 | } | |
297 | mutex_unlock(&dev->mode_config.idr_mutex); | |
298 | ||
299 | return ret < 0 ? ret : 0; | |
300 | } | |
301 | ||
f453ba04 | 302 | /** |
065a50ed | 303 | * drm_mode_object_get - allocate a new modeset identifier |
f453ba04 | 304 | * @dev: DRM device |
065a50ed DV |
305 | * @obj: object pointer, used to generate unique ID |
306 | * @obj_type: object type | |
f453ba04 | 307 | * |
f453ba04 | 308 | * Create a unique identifier based on @ptr in @dev's identifier space. Used |
c8e32cc1 DV |
309 | * for tracking modes, CRTCs and connectors. Note that despite the _get postfix |
310 | * modeset identifiers are _not_ reference counted. Hence don't use this for | |
311 | * reference counted modeset objects like framebuffers. | |
f453ba04 | 312 | * |
c8e32cc1 | 313 | * Returns: |
f453ba04 DA |
314 | * New unique (relative to other objects in @dev) integer identifier for the |
315 | * object. | |
316 | */ | |
8bd441b2 DV |
317 | int drm_mode_object_get(struct drm_device *dev, |
318 | struct drm_mode_object *obj, uint32_t obj_type) | |
f453ba04 | 319 | { |
2ee39452 DA |
320 | return drm_mode_object_get_reg(dev, obj, obj_type, true); |
321 | } | |
f453ba04 | 322 | |
2ee39452 DA |
323 | static void drm_mode_object_register(struct drm_device *dev, |
324 | struct drm_mode_object *obj) | |
325 | { | |
ad2563c2 | 326 | mutex_lock(&dev->mode_config.idr_mutex); |
2ee39452 | 327 | idr_replace(&dev->mode_config.crtc_idr, obj, obj->id); |
ad2563c2 | 328 | mutex_unlock(&dev->mode_config.idr_mutex); |
f453ba04 DA |
329 | } |
330 | ||
331 | /** | |
065a50ed | 332 | * drm_mode_object_put - free a modeset identifer |
f453ba04 | 333 | * @dev: DRM device |
065a50ed | 334 | * @object: object to free |
f453ba04 | 335 | * |
c8e32cc1 DV |
336 | * Free @id from @dev's unique identifier pool. Note that despite the _get |
337 | * postfix modeset identifiers are _not_ reference counted. Hence don't use this | |
338 | * for reference counted modeset objects like framebuffers. | |
f453ba04 | 339 | */ |
8bd441b2 DV |
340 | void drm_mode_object_put(struct drm_device *dev, |
341 | struct drm_mode_object *object) | |
f453ba04 | 342 | { |
ad2563c2 | 343 | mutex_lock(&dev->mode_config.idr_mutex); |
f453ba04 | 344 | idr_remove(&dev->mode_config.crtc_idr, object->id); |
ad2563c2 | 345 | mutex_unlock(&dev->mode_config.idr_mutex); |
f453ba04 DA |
346 | } |
347 | ||
98f75de4 RC |
348 | static struct drm_mode_object *_object_find(struct drm_device *dev, |
349 | uint32_t id, uint32_t type) | |
350 | { | |
351 | struct drm_mode_object *obj = NULL; | |
352 | ||
353 | mutex_lock(&dev->mode_config.idr_mutex); | |
354 | obj = idr_find(&dev->mode_config.crtc_idr, id); | |
168c02ec DV |
355 | if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type) |
356 | obj = NULL; | |
357 | if (obj && obj->id != id) | |
358 | obj = NULL; | |
359 | /* don't leak out unref'd fb's */ | |
360 | if (obj && (obj->type == DRM_MODE_OBJECT_FB)) | |
98f75de4 RC |
361 | obj = NULL; |
362 | mutex_unlock(&dev->mode_config.idr_mutex); | |
363 | ||
364 | return obj; | |
365 | } | |
366 | ||
786b99ed DV |
367 | /** |
368 | * drm_mode_object_find - look up a drm object with static lifetime | |
369 | * @dev: drm device | |
370 | * @id: id of the mode object | |
371 | * @type: type of the mode object | |
372 | * | |
373 | * Note that framebuffers cannot be looked up with this functions - since those | |
98f75de4 RC |
374 | * are reference counted, they need special treatment. Even with |
375 | * DRM_MODE_OBJECT_ANY (although that will simply return NULL | |
376 | * rather than WARN_ON()). | |
786b99ed | 377 | */ |
7a9c9060 DV |
378 | struct drm_mode_object *drm_mode_object_find(struct drm_device *dev, |
379 | uint32_t id, uint32_t type) | |
f453ba04 | 380 | { |
ad2563c2 | 381 | struct drm_mode_object *obj = NULL; |
f453ba04 | 382 | |
786b99ed DV |
383 | /* Framebuffers are reference counted and need their own lookup |
384 | * function.*/ | |
385 | WARN_ON(type == DRM_MODE_OBJECT_FB); | |
98f75de4 | 386 | obj = _object_find(dev, id, type); |
f453ba04 DA |
387 | return obj; |
388 | } | |
389 | EXPORT_SYMBOL(drm_mode_object_find); | |
390 | ||
f453ba04 DA |
391 | /** |
392 | * drm_framebuffer_init - initialize a framebuffer | |
393 | * @dev: DRM device | |
065a50ed DV |
394 | * @fb: framebuffer to be initialized |
395 | * @funcs: ... with these functions | |
f453ba04 | 396 | * |
f453ba04 DA |
397 | * Allocates an ID for the framebuffer's parent mode object, sets its mode |
398 | * functions & device file and adds it to the master fd list. | |
399 | * | |
4b096ac1 DV |
400 | * IMPORTANT: |
401 | * This functions publishes the fb and makes it available for concurrent access | |
402 | * by other users. Which means by this point the fb _must_ be fully set up - | |
403 | * since all the fb attributes are invariant over its lifetime, no further | |
404 | * locking but only correct reference counting is required. | |
405 | * | |
c8e32cc1 | 406 | * Returns: |
af901ca1 | 407 | * Zero on success, error code on failure. |
f453ba04 DA |
408 | */ |
409 | int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb, | |
410 | const struct drm_framebuffer_funcs *funcs) | |
411 | { | |
412 | int ret; | |
413 | ||
4b096ac1 | 414 | mutex_lock(&dev->mode_config.fb_lock); |
f7eff60e | 415 | kref_init(&fb->refcount); |
4b096ac1 DV |
416 | INIT_LIST_HEAD(&fb->filp_head); |
417 | fb->dev = dev; | |
418 | fb->funcs = funcs; | |
f7eff60e | 419 | |
f453ba04 | 420 | ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB); |
6bfc56aa | 421 | if (ret) |
4b096ac1 | 422 | goto out; |
f453ba04 | 423 | |
f453ba04 DA |
424 | dev->mode_config.num_fb++; |
425 | list_add(&fb->head, &dev->mode_config.fb_list); | |
4b096ac1 DV |
426 | out: |
427 | mutex_unlock(&dev->mode_config.fb_lock); | |
f453ba04 DA |
428 | |
429 | return 0; | |
430 | } | |
431 | EXPORT_SYMBOL(drm_framebuffer_init); | |
432 | ||
83f45fc3 DV |
433 | /* dev->mode_config.fb_lock must be held! */ |
434 | static void __drm_framebuffer_unregister(struct drm_device *dev, | |
435 | struct drm_framebuffer *fb) | |
436 | { | |
437 | mutex_lock(&dev->mode_config.idr_mutex); | |
438 | idr_remove(&dev->mode_config.crtc_idr, fb->base.id); | |
439 | mutex_unlock(&dev->mode_config.idr_mutex); | |
440 | ||
441 | fb->base.id = 0; | |
442 | } | |
443 | ||
f7eff60e RC |
444 | static void drm_framebuffer_free(struct kref *kref) |
445 | { | |
446 | struct drm_framebuffer *fb = | |
447 | container_of(kref, struct drm_framebuffer, refcount); | |
83f45fc3 DV |
448 | struct drm_device *dev = fb->dev; |
449 | ||
450 | /* | |
451 | * The lookup idr holds a weak reference, which has not necessarily been | |
452 | * removed at this point. Check for that. | |
453 | */ | |
454 | mutex_lock(&dev->mode_config.fb_lock); | |
455 | if (fb->base.id) { | |
456 | /* Mark fb as reaped and drop idr ref. */ | |
457 | __drm_framebuffer_unregister(dev, fb); | |
458 | } | |
459 | mutex_unlock(&dev->mode_config.fb_lock); | |
460 | ||
f7eff60e RC |
461 | fb->funcs->destroy(fb); |
462 | } | |
463 | ||
2b677e8c DV |
464 | static struct drm_framebuffer *__drm_framebuffer_lookup(struct drm_device *dev, |
465 | uint32_t id) | |
466 | { | |
467 | struct drm_mode_object *obj = NULL; | |
468 | struct drm_framebuffer *fb; | |
469 | ||
470 | mutex_lock(&dev->mode_config.idr_mutex); | |
471 | obj = idr_find(&dev->mode_config.crtc_idr, id); | |
472 | if (!obj || (obj->type != DRM_MODE_OBJECT_FB) || (obj->id != id)) | |
473 | fb = NULL; | |
474 | else | |
475 | fb = obj_to_fb(obj); | |
476 | mutex_unlock(&dev->mode_config.idr_mutex); | |
477 | ||
478 | return fb; | |
479 | } | |
480 | ||
786b99ed DV |
481 | /** |
482 | * drm_framebuffer_lookup - look up a drm framebuffer and grab a reference | |
483 | * @dev: drm device | |
484 | * @id: id of the fb object | |
485 | * | |
486 | * If successful, this grabs an additional reference to the framebuffer - | |
487 | * callers need to make sure to eventually unreference the returned framebuffer | |
c8e32cc1 | 488 | * again, using @drm_framebuffer_unreference. |
786b99ed DV |
489 | */ |
490 | struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev, | |
491 | uint32_t id) | |
492 | { | |
786b99ed DV |
493 | struct drm_framebuffer *fb; |
494 | ||
495 | mutex_lock(&dev->mode_config.fb_lock); | |
2b677e8c | 496 | fb = __drm_framebuffer_lookup(dev, id); |
83f45fc3 DV |
497 | if (fb) { |
498 | if (!kref_get_unless_zero(&fb->refcount)) | |
499 | fb = NULL; | |
500 | } | |
786b99ed DV |
501 | mutex_unlock(&dev->mode_config.fb_lock); |
502 | ||
503 | return fb; | |
504 | } | |
505 | EXPORT_SYMBOL(drm_framebuffer_lookup); | |
506 | ||
f7eff60e RC |
507 | /** |
508 | * drm_framebuffer_unreference - unref a framebuffer | |
065a50ed DV |
509 | * @fb: framebuffer to unref |
510 | * | |
511 | * This functions decrements the fb's refcount and frees it if it drops to zero. | |
f7eff60e RC |
512 | */ |
513 | void drm_framebuffer_unreference(struct drm_framebuffer *fb) | |
514 | { | |
8291272a | 515 | DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount)); |
f7eff60e RC |
516 | kref_put(&fb->refcount, drm_framebuffer_free); |
517 | } | |
518 | EXPORT_SYMBOL(drm_framebuffer_unreference); | |
519 | ||
520 | /** | |
521 | * drm_framebuffer_reference - incr the fb refcnt | |
065a50ed | 522 | * @fb: framebuffer |
c8e32cc1 DV |
523 | * |
524 | * This functions increments the fb's refcount. | |
f7eff60e RC |
525 | */ |
526 | void drm_framebuffer_reference(struct drm_framebuffer *fb) | |
527 | { | |
8291272a | 528 | DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount)); |
f7eff60e RC |
529 | kref_get(&fb->refcount); |
530 | } | |
531 | EXPORT_SYMBOL(drm_framebuffer_reference); | |
532 | ||
2b677e8c DV |
533 | static void drm_framebuffer_free_bug(struct kref *kref) |
534 | { | |
535 | BUG(); | |
536 | } | |
537 | ||
6c2a7532 DV |
538 | static void __drm_framebuffer_unreference(struct drm_framebuffer *fb) |
539 | { | |
8291272a | 540 | DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount)); |
6c2a7532 DV |
541 | kref_put(&fb->refcount, drm_framebuffer_free_bug); |
542 | } | |
543 | ||
36206361 DV |
544 | /** |
545 | * drm_framebuffer_unregister_private - unregister a private fb from the lookup idr | |
546 | * @fb: fb to unregister | |
547 | * | |
548 | * Drivers need to call this when cleaning up driver-private framebuffers, e.g. | |
549 | * those used for fbdev. Note that the caller must hold a reference of it's own, | |
550 | * i.e. the object may not be destroyed through this call (since it'll lead to a | |
551 | * locking inversion). | |
552 | */ | |
553 | void drm_framebuffer_unregister_private(struct drm_framebuffer *fb) | |
554 | { | |
2b677e8c DV |
555 | struct drm_device *dev = fb->dev; |
556 | ||
557 | mutex_lock(&dev->mode_config.fb_lock); | |
558 | /* Mark fb as reaped and drop idr ref. */ | |
559 | __drm_framebuffer_unregister(dev, fb); | |
560 | mutex_unlock(&dev->mode_config.fb_lock); | |
36206361 DV |
561 | } |
562 | EXPORT_SYMBOL(drm_framebuffer_unregister_private); | |
563 | ||
f453ba04 DA |
564 | /** |
565 | * drm_framebuffer_cleanup - remove a framebuffer object | |
566 | * @fb: framebuffer to remove | |
567 | * | |
c8e32cc1 DV |
568 | * Cleanup framebuffer. This function is intended to be used from the drivers |
569 | * ->destroy callback. It can also be used to clean up driver private | |
570 | * framebuffers embedded into a larger structure. | |
36206361 DV |
571 | * |
572 | * Note that this function does not remove the fb from active usuage - if it is | |
573 | * still used anywhere, hilarity can ensue since userspace could call getfb on | |
574 | * the id and get back -EINVAL. Obviously no concern at driver unload time. | |
575 | * | |
576 | * Also, the framebuffer will not be removed from the lookup idr - for | |
577 | * user-created framebuffers this will happen in in the rmfb ioctl. For | |
578 | * driver-private objects (e.g. for fbdev) drivers need to explicitly call | |
579 | * drm_framebuffer_unregister_private. | |
f453ba04 DA |
580 | */ |
581 | void drm_framebuffer_cleanup(struct drm_framebuffer *fb) | |
f7eff60e RC |
582 | { |
583 | struct drm_device *dev = fb->dev; | |
8faf6b18 | 584 | |
4b096ac1 | 585 | mutex_lock(&dev->mode_config.fb_lock); |
f7eff60e RC |
586 | list_del(&fb->head); |
587 | dev->mode_config.num_fb--; | |
4b096ac1 | 588 | mutex_unlock(&dev->mode_config.fb_lock); |
f7eff60e RC |
589 | } |
590 | EXPORT_SYMBOL(drm_framebuffer_cleanup); | |
591 | ||
592 | /** | |
593 | * drm_framebuffer_remove - remove and unreference a framebuffer object | |
594 | * @fb: framebuffer to remove | |
595 | * | |
f7eff60e | 596 | * Scans all the CRTCs and planes in @dev's mode_config. If they're |
36206361 | 597 | * using @fb, removes it, setting it to NULL. Then drops the reference to the |
b62584e3 DV |
598 | * passed-in framebuffer. Might take the modeset locks. |
599 | * | |
600 | * Note that this function optimizes the cleanup away if the caller holds the | |
601 | * last reference to the framebuffer. It is also guaranteed to not take the | |
602 | * modeset locks in this case. | |
f7eff60e RC |
603 | */ |
604 | void drm_framebuffer_remove(struct drm_framebuffer *fb) | |
f453ba04 DA |
605 | { |
606 | struct drm_device *dev = fb->dev; | |
607 | struct drm_crtc *crtc; | |
8cf5c917 | 608 | struct drm_plane *plane; |
5ef5f72f DA |
609 | struct drm_mode_set set; |
610 | int ret; | |
f453ba04 | 611 | |
4b096ac1 | 612 | WARN_ON(!list_empty(&fb->filp_head)); |
8faf6b18 | 613 | |
b62584e3 DV |
614 | /* |
615 | * drm ABI mandates that we remove any deleted framebuffers from active | |
616 | * useage. But since most sane clients only remove framebuffers they no | |
617 | * longer need, try to optimize this away. | |
618 | * | |
619 | * Since we're holding a reference ourselves, observing a refcount of 1 | |
620 | * means that we're the last holder and can skip it. Also, the refcount | |
621 | * can never increase from 1 again, so we don't need any barriers or | |
622 | * locks. | |
623 | * | |
624 | * Note that userspace could try to race with use and instate a new | |
625 | * usage _after_ we've cleared all current ones. End result will be an | |
626 | * in-use fb with fb-id == 0. Userspace is allowed to shoot its own foot | |
627 | * in this manner. | |
628 | */ | |
629 | if (atomic_read(&fb->refcount.refcount) > 1) { | |
630 | drm_modeset_lock_all(dev); | |
631 | /* remove from any CRTC */ | |
632 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
f4510a27 | 633 | if (crtc->primary->fb == fb) { |
b62584e3 DV |
634 | /* should turn off the crtc */ |
635 | memset(&set, 0, sizeof(struct drm_mode_set)); | |
636 | set.crtc = crtc; | |
637 | set.fb = NULL; | |
638 | ret = drm_mode_set_config_internal(&set); | |
639 | if (ret) | |
640 | DRM_ERROR("failed to reset crtc %p when fb was deleted\n", crtc); | |
641 | } | |
5ef5f72f | 642 | } |
f453ba04 | 643 | |
b62584e3 | 644 | list_for_each_entry(plane, &dev->mode_config.plane_list, head) { |
9125e618 VS |
645 | if (plane->fb == fb) |
646 | drm_plane_force_disable(plane); | |
8cf5c917 | 647 | } |
b62584e3 | 648 | drm_modeset_unlock_all(dev); |
8cf5c917 JB |
649 | } |
650 | ||
f7eff60e | 651 | drm_framebuffer_unreference(fb); |
f453ba04 | 652 | } |
f7eff60e | 653 | EXPORT_SYMBOL(drm_framebuffer_remove); |
f453ba04 | 654 | |
51fd371b RC |
655 | DEFINE_WW_CLASS(crtc_ww_class); |
656 | ||
f453ba04 | 657 | /** |
e13161af MR |
658 | * drm_crtc_init_with_planes - Initialise a new CRTC object with |
659 | * specified primary and cursor planes. | |
f453ba04 DA |
660 | * @dev: DRM device |
661 | * @crtc: CRTC object to init | |
e13161af MR |
662 | * @primary: Primary plane for CRTC |
663 | * @cursor: Cursor plane for CRTC | |
f453ba04 DA |
664 | * @funcs: callbacks for the new CRTC |
665 | * | |
ad6f5c34 | 666 | * Inits a new object created as base part of a driver crtc object. |
6bfc56aa | 667 | * |
c8e32cc1 | 668 | * Returns: |
6bfc56aa | 669 | * Zero on success, error code on failure. |
f453ba04 | 670 | */ |
e13161af MR |
671 | int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc, |
672 | struct drm_plane *primary, | |
fc1d3e44 | 673 | struct drm_plane *cursor, |
e13161af | 674 | const struct drm_crtc_funcs *funcs) |
f453ba04 | 675 | { |
51fd371b | 676 | struct drm_mode_config *config = &dev->mode_config; |
6bfc56aa VS |
677 | int ret; |
678 | ||
f453ba04 DA |
679 | crtc->dev = dev; |
680 | crtc->funcs = funcs; | |
7c80e128 | 681 | crtc->invert_dimensions = false; |
f453ba04 | 682 | |
51fd371b | 683 | drm_modeset_lock_init(&crtc->mutex); |
6bfc56aa VS |
684 | ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC); |
685 | if (ret) | |
baf698b0 | 686 | return ret; |
f453ba04 | 687 | |
bffd9de0 PZ |
688 | crtc->base.properties = &crtc->properties; |
689 | ||
51fd371b RC |
690 | list_add_tail(&crtc->head, &config->crtc_list); |
691 | config->num_crtc++; | |
6bfc56aa | 692 | |
e13161af | 693 | crtc->primary = primary; |
fc1d3e44 | 694 | crtc->cursor = cursor; |
e13161af MR |
695 | if (primary) |
696 | primary->possible_crtcs = 1 << drm_crtc_index(crtc); | |
fc1d3e44 MR |
697 | if (cursor) |
698 | cursor->possible_crtcs = 1 << drm_crtc_index(crtc); | |
e13161af | 699 | |
baf698b0 | 700 | return 0; |
f453ba04 | 701 | } |
e13161af | 702 | EXPORT_SYMBOL(drm_crtc_init_with_planes); |
f453ba04 DA |
703 | |
704 | /** | |
ad6f5c34 | 705 | * drm_crtc_cleanup - Clean up the core crtc usage |
f453ba04 DA |
706 | * @crtc: CRTC to cleanup |
707 | * | |
ad6f5c34 VS |
708 | * This function cleans up @crtc and removes it from the DRM mode setting |
709 | * core. Note that the function does *not* free the crtc structure itself, | |
710 | * this is the responsibility of the caller. | |
f453ba04 DA |
711 | */ |
712 | void drm_crtc_cleanup(struct drm_crtc *crtc) | |
713 | { | |
714 | struct drm_device *dev = crtc->dev; | |
715 | ||
9e1c156f SK |
716 | kfree(crtc->gamma_store); |
717 | crtc->gamma_store = NULL; | |
f453ba04 | 718 | |
51fd371b RC |
719 | drm_modeset_lock_fini(&crtc->mutex); |
720 | ||
f453ba04 DA |
721 | drm_mode_object_put(dev, &crtc->base); |
722 | list_del(&crtc->head); | |
723 | dev->mode_config.num_crtc--; | |
3009c037 TR |
724 | |
725 | WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state); | |
726 | if (crtc->state && crtc->funcs->atomic_destroy_state) | |
727 | crtc->funcs->atomic_destroy_state(crtc, crtc->state); | |
a18c0af1 TR |
728 | |
729 | memset(crtc, 0, sizeof(*crtc)); | |
f453ba04 DA |
730 | } |
731 | EXPORT_SYMBOL(drm_crtc_cleanup); | |
732 | ||
db5f7a6e RK |
733 | /** |
734 | * drm_crtc_index - find the index of a registered CRTC | |
735 | * @crtc: CRTC to find index for | |
736 | * | |
737 | * Given a registered CRTC, return the index of that CRTC within a DRM | |
738 | * device's list of CRTCs. | |
739 | */ | |
740 | unsigned int drm_crtc_index(struct drm_crtc *crtc) | |
741 | { | |
742 | unsigned int index = 0; | |
743 | struct drm_crtc *tmp; | |
744 | ||
745 | list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) { | |
746 | if (tmp == crtc) | |
747 | return index; | |
748 | ||
749 | index++; | |
750 | } | |
751 | ||
752 | BUG(); | |
753 | } | |
754 | EXPORT_SYMBOL(drm_crtc_index); | |
755 | ||
86f422d5 | 756 | /* |
f453ba04 DA |
757 | * drm_mode_remove - remove and free a mode |
758 | * @connector: connector list to modify | |
759 | * @mode: mode to remove | |
760 | * | |
f453ba04 DA |
761 | * Remove @mode from @connector's mode list, then free it. |
762 | */ | |
86f422d5 LD |
763 | static void drm_mode_remove(struct drm_connector *connector, |
764 | struct drm_display_mode *mode) | |
f453ba04 DA |
765 | { |
766 | list_del(&mode->head); | |
554f1d78 | 767 | drm_mode_destroy(connector->dev, mode); |
f453ba04 | 768 | } |
f453ba04 | 769 | |
eaf99c74 CW |
770 | /** |
771 | * drm_connector_get_cmdline_mode - reads the user's cmdline mode | |
772 | * @connector: connector to quwery | |
eaf99c74 CW |
773 | * |
774 | * The kernel supports per-connector configration of its consoles through | |
775 | * use of the video= parameter. This function parses that option and | |
776 | * extracts the user's specified mode (or enable/disable status) for a | |
777 | * particular connector. This is typically only used during the early fbdev | |
778 | * setup. | |
779 | */ | |
780 | static void drm_connector_get_cmdline_mode(struct drm_connector *connector) | |
781 | { | |
782 | struct drm_cmdline_mode *mode = &connector->cmdline_mode; | |
783 | char *option = NULL; | |
784 | ||
785 | if (fb_get_options(connector->name, &option)) | |
786 | return; | |
787 | ||
788 | if (!drm_mode_parse_command_line_for_connector(option, | |
789 | connector, | |
790 | mode)) | |
791 | return; | |
792 | ||
793 | if (mode->force) { | |
794 | const char *s; | |
795 | ||
796 | switch (mode->force) { | |
797 | case DRM_FORCE_OFF: | |
798 | s = "OFF"; | |
799 | break; | |
800 | case DRM_FORCE_ON_DIGITAL: | |
801 | s = "ON - dig"; | |
802 | break; | |
803 | default: | |
804 | case DRM_FORCE_ON: | |
805 | s = "ON"; | |
806 | break; | |
807 | } | |
808 | ||
809 | DRM_INFO("forcing %s connector %s\n", connector->name, s); | |
810 | connector->force = mode->force; | |
811 | } | |
812 | ||
813 | DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n", | |
814 | connector->name, | |
815 | mode->xres, mode->yres, | |
816 | mode->refresh_specified ? mode->refresh : 60, | |
817 | mode->rb ? " reduced blanking" : "", | |
818 | mode->margins ? " with margins" : "", | |
819 | mode->interlace ? " interlaced" : ""); | |
820 | } | |
821 | ||
f453ba04 DA |
822 | /** |
823 | * drm_connector_init - Init a preallocated connector | |
824 | * @dev: DRM device | |
825 | * @connector: the connector to init | |
826 | * @funcs: callbacks for this connector | |
065a50ed | 827 | * @connector_type: user visible type of the connector |
f453ba04 | 828 | * |
f453ba04 DA |
829 | * Initialises a preallocated connector. Connectors should be |
830 | * subclassed as part of driver connector objects. | |
6bfc56aa | 831 | * |
c8e32cc1 | 832 | * Returns: |
6bfc56aa | 833 | * Zero on success, error code on failure. |
f453ba04 | 834 | */ |
6bfc56aa VS |
835 | int drm_connector_init(struct drm_device *dev, |
836 | struct drm_connector *connector, | |
837 | const struct drm_connector_funcs *funcs, | |
838 | int connector_type) | |
f453ba04 | 839 | { |
6bfc56aa | 840 | int ret; |
b21e3afe IM |
841 | struct ida *connector_ida = |
842 | &drm_connector_enum_list[connector_type].ida; | |
6bfc56aa | 843 | |
84849903 | 844 | drm_modeset_lock_all(dev); |
f453ba04 | 845 | |
2ee39452 | 846 | ret = drm_mode_object_get_reg(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR, false); |
6bfc56aa | 847 | if (ret) |
2abdd313 | 848 | goto out_unlock; |
6bfc56aa | 849 | |
7e3bdf4a | 850 | connector->base.properties = &connector->properties; |
f453ba04 DA |
851 | connector->dev = dev; |
852 | connector->funcs = funcs; | |
f453ba04 DA |
853 | connector->connector_type = connector_type; |
854 | connector->connector_type_id = | |
b21e3afe IM |
855 | ida_simple_get(connector_ida, 1, 0, GFP_KERNEL); |
856 | if (connector->connector_type_id < 0) { | |
857 | ret = connector->connector_type_id; | |
2abdd313 | 858 | goto out_put; |
b21e3afe | 859 | } |
2abdd313 JN |
860 | connector->name = |
861 | kasprintf(GFP_KERNEL, "%s-%d", | |
862 | drm_connector_enum_list[connector_type].name, | |
863 | connector->connector_type_id); | |
864 | if (!connector->name) { | |
865 | ret = -ENOMEM; | |
866 | goto out_put; | |
867 | } | |
868 | ||
f453ba04 DA |
869 | INIT_LIST_HEAD(&connector->probed_modes); |
870 | INIT_LIST_HEAD(&connector->modes); | |
871 | connector->edid_blob_ptr = NULL; | |
5e2cb2f6 | 872 | connector->status = connector_status_unknown; |
f453ba04 | 873 | |
eaf99c74 CW |
874 | drm_connector_get_cmdline_mode(connector); |
875 | ||
c7eb76f4 DV |
876 | /* We should add connectors at the end to avoid upsetting the connector |
877 | * index too much. */ | |
f453ba04 DA |
878 | list_add_tail(&connector->head, &dev->mode_config.connector_list); |
879 | dev->mode_config.num_connector++; | |
880 | ||
a7331e5c | 881 | if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL) |
58495563 | 882 | drm_object_attach_property(&connector->base, |
a7331e5c TH |
883 | dev->mode_config.edid_property, |
884 | 0); | |
f453ba04 | 885 | |
58495563 | 886 | drm_object_attach_property(&connector->base, |
f453ba04 DA |
887 | dev->mode_config.dpms_property, 0); |
888 | ||
30f65707 TW |
889 | connector->debugfs_entry = NULL; |
890 | ||
2abdd313 JN |
891 | out_put: |
892 | if (ret) | |
893 | drm_mode_object_put(dev, &connector->base); | |
894 | ||
895 | out_unlock: | |
84849903 | 896 | drm_modeset_unlock_all(dev); |
6bfc56aa VS |
897 | |
898 | return ret; | |
f453ba04 DA |
899 | } |
900 | EXPORT_SYMBOL(drm_connector_init); | |
901 | ||
902 | /** | |
903 | * drm_connector_cleanup - cleans up an initialised connector | |
904 | * @connector: connector to cleanup | |
905 | * | |
f453ba04 DA |
906 | * Cleans up the connector but doesn't free the object. |
907 | */ | |
908 | void drm_connector_cleanup(struct drm_connector *connector) | |
909 | { | |
910 | struct drm_device *dev = connector->dev; | |
911 | struct drm_display_mode *mode, *t; | |
912 | ||
40d9b043 DA |
913 | if (connector->tile_group) { |
914 | drm_mode_put_tile_group(dev, connector->tile_group); | |
915 | connector->tile_group = NULL; | |
916 | } | |
917 | ||
f453ba04 DA |
918 | list_for_each_entry_safe(mode, t, &connector->probed_modes, head) |
919 | drm_mode_remove(connector, mode); | |
920 | ||
921 | list_for_each_entry_safe(mode, t, &connector->modes, head) | |
922 | drm_mode_remove(connector, mode); | |
923 | ||
b21e3afe IM |
924 | ida_remove(&drm_connector_enum_list[connector->connector_type].ida, |
925 | connector->connector_type_id); | |
926 | ||
f453ba04 | 927 | drm_mode_object_put(dev, &connector->base); |
2abdd313 JN |
928 | kfree(connector->name); |
929 | connector->name = NULL; | |
f453ba04 | 930 | list_del(&connector->head); |
6380c509 | 931 | dev->mode_config.num_connector--; |
3009c037 TR |
932 | |
933 | WARN_ON(connector->state && !connector->funcs->atomic_destroy_state); | |
934 | if (connector->state && connector->funcs->atomic_destroy_state) | |
935 | connector->funcs->atomic_destroy_state(connector, | |
936 | connector->state); | |
a18c0af1 TR |
937 | |
938 | memset(connector, 0, sizeof(*connector)); | |
f453ba04 DA |
939 | } |
940 | EXPORT_SYMBOL(drm_connector_cleanup); | |
941 | ||
10f637bf DV |
942 | /** |
943 | * drm_connector_index - find the index of a registered connector | |
944 | * @connector: connector to find index for | |
945 | * | |
946 | * Given a registered connector, return the index of that connector within a DRM | |
947 | * device's list of connectors. | |
948 | */ | |
949 | unsigned int drm_connector_index(struct drm_connector *connector) | |
950 | { | |
951 | unsigned int index = 0; | |
952 | struct drm_connector *tmp; | |
c7eb76f4 DV |
953 | struct drm_mode_config *config = &connector->dev->mode_config; |
954 | ||
955 | WARN_ON(!drm_modeset_is_locked(&config->connection_mutex)); | |
10f637bf DV |
956 | |
957 | list_for_each_entry(tmp, &connector->dev->mode_config.connector_list, head) { | |
958 | if (tmp == connector) | |
959 | return index; | |
960 | ||
961 | index++; | |
962 | } | |
963 | ||
964 | BUG(); | |
965 | } | |
966 | EXPORT_SYMBOL(drm_connector_index); | |
967 | ||
34ea3d38 TW |
968 | /** |
969 | * drm_connector_register - register a connector | |
970 | * @connector: the connector to register | |
971 | * | |
972 | * Register userspace interfaces for a connector | |
973 | * | |
974 | * Returns: | |
975 | * Zero on success, error code on failure. | |
976 | */ | |
977 | int drm_connector_register(struct drm_connector *connector) | |
978 | { | |
30f65707 TW |
979 | int ret; |
980 | ||
2ee39452 DA |
981 | drm_mode_object_register(connector->dev, &connector->base); |
982 | ||
30f65707 TW |
983 | ret = drm_sysfs_connector_add(connector); |
984 | if (ret) | |
985 | return ret; | |
986 | ||
987 | ret = drm_debugfs_connector_add(connector); | |
988 | if (ret) { | |
989 | drm_sysfs_connector_remove(connector); | |
990 | return ret; | |
991 | } | |
992 | ||
993 | return 0; | |
34ea3d38 TW |
994 | } |
995 | EXPORT_SYMBOL(drm_connector_register); | |
996 | ||
997 | /** | |
998 | * drm_connector_unregister - unregister a connector | |
999 | * @connector: the connector to unregister | |
1000 | * | |
1001 | * Unregister userspace interfaces for a connector | |
1002 | */ | |
1003 | void drm_connector_unregister(struct drm_connector *connector) | |
1004 | { | |
1005 | drm_sysfs_connector_remove(connector); | |
30f65707 | 1006 | drm_debugfs_connector_remove(connector); |
34ea3d38 TW |
1007 | } |
1008 | EXPORT_SYMBOL(drm_connector_unregister); | |
1009 | ||
1010 | ||
c8e32cc1 DV |
1011 | /** |
1012 | * drm_connector_unplug_all - unregister connector userspace interfaces | |
1013 | * @dev: drm device | |
1014 | * | |
1015 | * This function unregisters all connector userspace interfaces in sysfs. Should | |
1016 | * be call when the device is disconnected, e.g. from an usb driver's | |
1017 | * ->disconnect callback. | |
1018 | */ | |
cbc7e221 DA |
1019 | void drm_connector_unplug_all(struct drm_device *dev) |
1020 | { | |
1021 | struct drm_connector *connector; | |
1022 | ||
1023 | /* taking the mode config mutex ends up in a clash with sysfs */ | |
1024 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
34ea3d38 | 1025 | drm_connector_unregister(connector); |
cbc7e221 DA |
1026 | |
1027 | } | |
1028 | EXPORT_SYMBOL(drm_connector_unplug_all); | |
1029 | ||
c8e32cc1 DV |
1030 | /** |
1031 | * drm_bridge_init - initialize a drm transcoder/bridge | |
1032 | * @dev: drm device | |
1033 | * @bridge: transcoder/bridge to set up | |
1034 | * @funcs: bridge function table | |
1035 | * | |
1036 | * Initialises a preallocated bridge. Bridges should be | |
1037 | * subclassed as part of driver connector objects. | |
1038 | * | |
1039 | * Returns: | |
1040 | * Zero on success, error code on failure. | |
1041 | */ | |
3b336ec4 SP |
1042 | int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge, |
1043 | const struct drm_bridge_funcs *funcs) | |
1044 | { | |
1045 | int ret; | |
1046 | ||
1047 | drm_modeset_lock_all(dev); | |
1048 | ||
1049 | ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE); | |
1050 | if (ret) | |
1051 | goto out; | |
1052 | ||
1053 | bridge->dev = dev; | |
1054 | bridge->funcs = funcs; | |
1055 | ||
1056 | list_add_tail(&bridge->head, &dev->mode_config.bridge_list); | |
1057 | dev->mode_config.num_bridge++; | |
1058 | ||
1059 | out: | |
1060 | drm_modeset_unlock_all(dev); | |
1061 | return ret; | |
1062 | } | |
1063 | EXPORT_SYMBOL(drm_bridge_init); | |
1064 | ||
c8e32cc1 DV |
1065 | /** |
1066 | * drm_bridge_cleanup - cleans up an initialised bridge | |
1067 | * @bridge: bridge to cleanup | |
1068 | * | |
1069 | * Cleans up the bridge but doesn't free the object. | |
1070 | */ | |
3b336ec4 SP |
1071 | void drm_bridge_cleanup(struct drm_bridge *bridge) |
1072 | { | |
1073 | struct drm_device *dev = bridge->dev; | |
1074 | ||
1075 | drm_modeset_lock_all(dev); | |
1076 | drm_mode_object_put(dev, &bridge->base); | |
1077 | list_del(&bridge->head); | |
1078 | dev->mode_config.num_bridge--; | |
1079 | drm_modeset_unlock_all(dev); | |
a18c0af1 TR |
1080 | |
1081 | memset(bridge, 0, sizeof(*bridge)); | |
3b336ec4 SP |
1082 | } |
1083 | EXPORT_SYMBOL(drm_bridge_cleanup); | |
1084 | ||
c8e32cc1 DV |
1085 | /** |
1086 | * drm_encoder_init - Init a preallocated encoder | |
1087 | * @dev: drm device | |
1088 | * @encoder: the encoder to init | |
1089 | * @funcs: callbacks for this encoder | |
1090 | * @encoder_type: user visible type of the encoder | |
1091 | * | |
1092 | * Initialises a preallocated encoder. Encoder should be | |
1093 | * subclassed as part of driver encoder objects. | |
1094 | * | |
1095 | * Returns: | |
1096 | * Zero on success, error code on failure. | |
1097 | */ | |
6bfc56aa | 1098 | int drm_encoder_init(struct drm_device *dev, |
cbc7e221 DA |
1099 | struct drm_encoder *encoder, |
1100 | const struct drm_encoder_funcs *funcs, | |
1101 | int encoder_type) | |
f453ba04 | 1102 | { |
6bfc56aa VS |
1103 | int ret; |
1104 | ||
84849903 | 1105 | drm_modeset_lock_all(dev); |
f453ba04 | 1106 | |
6bfc56aa VS |
1107 | ret = drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER); |
1108 | if (ret) | |
e5748946 | 1109 | goto out_unlock; |
f453ba04 | 1110 | |
6bfc56aa | 1111 | encoder->dev = dev; |
f453ba04 DA |
1112 | encoder->encoder_type = encoder_type; |
1113 | encoder->funcs = funcs; | |
e5748946 JN |
1114 | encoder->name = kasprintf(GFP_KERNEL, "%s-%d", |
1115 | drm_encoder_enum_list[encoder_type].name, | |
1116 | encoder->base.id); | |
1117 | if (!encoder->name) { | |
1118 | ret = -ENOMEM; | |
1119 | goto out_put; | |
1120 | } | |
f453ba04 DA |
1121 | |
1122 | list_add_tail(&encoder->head, &dev->mode_config.encoder_list); | |
1123 | dev->mode_config.num_encoder++; | |
1124 | ||
e5748946 JN |
1125 | out_put: |
1126 | if (ret) | |
1127 | drm_mode_object_put(dev, &encoder->base); | |
1128 | ||
1129 | out_unlock: | |
84849903 | 1130 | drm_modeset_unlock_all(dev); |
6bfc56aa VS |
1131 | |
1132 | return ret; | |
f453ba04 DA |
1133 | } |
1134 | EXPORT_SYMBOL(drm_encoder_init); | |
1135 | ||
c8e32cc1 DV |
1136 | /** |
1137 | * drm_encoder_cleanup - cleans up an initialised encoder | |
1138 | * @encoder: encoder to cleanup | |
1139 | * | |
1140 | * Cleans up the encoder but doesn't free the object. | |
1141 | */ | |
f453ba04 DA |
1142 | void drm_encoder_cleanup(struct drm_encoder *encoder) |
1143 | { | |
1144 | struct drm_device *dev = encoder->dev; | |
84849903 | 1145 | drm_modeset_lock_all(dev); |
f453ba04 | 1146 | drm_mode_object_put(dev, &encoder->base); |
e5748946 | 1147 | kfree(encoder->name); |
f453ba04 | 1148 | list_del(&encoder->head); |
6380c509 | 1149 | dev->mode_config.num_encoder--; |
84849903 | 1150 | drm_modeset_unlock_all(dev); |
a18c0af1 TR |
1151 | |
1152 | memset(encoder, 0, sizeof(*encoder)); | |
f453ba04 DA |
1153 | } |
1154 | EXPORT_SYMBOL(drm_encoder_cleanup); | |
1155 | ||
35f2c3ae | 1156 | /** |
dc415ff9 | 1157 | * drm_universal_plane_init - Initialize a new universal plane object |
35f2c3ae VS |
1158 | * @dev: DRM device |
1159 | * @plane: plane object to init | |
1160 | * @possible_crtcs: bitmask of possible CRTCs | |
1161 | * @funcs: callbacks for the new plane | |
1162 | * @formats: array of supported formats (%DRM_FORMAT_*) | |
1163 | * @format_count: number of elements in @formats | |
dc415ff9 | 1164 | * @type: type of plane (overlay, primary, cursor) |
35f2c3ae | 1165 | * |
dc415ff9 | 1166 | * Initializes a plane object of type @type. |
35f2c3ae | 1167 | * |
c8e32cc1 | 1168 | * Returns: |
35f2c3ae VS |
1169 | * Zero on success, error code on failure. |
1170 | */ | |
dc415ff9 MR |
1171 | int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane, |
1172 | unsigned long possible_crtcs, | |
1173 | const struct drm_plane_funcs *funcs, | |
1174 | const uint32_t *formats, uint32_t format_count, | |
1175 | enum drm_plane_type type) | |
8cf5c917 | 1176 | { |
6bfc56aa VS |
1177 | int ret; |
1178 | ||
6bfc56aa VS |
1179 | ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE); |
1180 | if (ret) | |
baf698b0 | 1181 | return ret; |
6bfc56aa | 1182 | |
4d02e2de DV |
1183 | drm_modeset_lock_init(&plane->mutex); |
1184 | ||
4d93914a | 1185 | plane->base.properties = &plane->properties; |
8cf5c917 | 1186 | plane->dev = dev; |
8cf5c917 JB |
1187 | plane->funcs = funcs; |
1188 | plane->format_types = kmalloc(sizeof(uint32_t) * format_count, | |
1189 | GFP_KERNEL); | |
1190 | if (!plane->format_types) { | |
1191 | DRM_DEBUG_KMS("out of memory when allocating plane\n"); | |
1192 | drm_mode_object_put(dev, &plane->base); | |
baf698b0 | 1193 | return -ENOMEM; |
8cf5c917 JB |
1194 | } |
1195 | ||
308e5bcb | 1196 | memcpy(plane->format_types, formats, format_count * sizeof(uint32_t)); |
8cf5c917 JB |
1197 | plane->format_count = format_count; |
1198 | plane->possible_crtcs = possible_crtcs; | |
dc415ff9 | 1199 | plane->type = type; |
8cf5c917 | 1200 | |
dc415ff9 MR |
1201 | list_add_tail(&plane->head, &dev->mode_config.plane_list); |
1202 | dev->mode_config.num_total_plane++; | |
1203 | if (plane->type == DRM_PLANE_TYPE_OVERLAY) | |
1204 | dev->mode_config.num_overlay_plane++; | |
8cf5c917 | 1205 | |
9922ab5a RC |
1206 | drm_object_attach_property(&plane->base, |
1207 | dev->mode_config.plane_type_property, | |
1208 | plane->type); | |
1209 | ||
baf698b0 | 1210 | return 0; |
8cf5c917 | 1211 | } |
dc415ff9 MR |
1212 | EXPORT_SYMBOL(drm_universal_plane_init); |
1213 | ||
1214 | /** | |
1215 | * drm_plane_init - Initialize a legacy plane | |
1216 | * @dev: DRM device | |
1217 | * @plane: plane object to init | |
1218 | * @possible_crtcs: bitmask of possible CRTCs | |
1219 | * @funcs: callbacks for the new plane | |
1220 | * @formats: array of supported formats (%DRM_FORMAT_*) | |
1221 | * @format_count: number of elements in @formats | |
1222 | * @is_primary: plane type (primary vs overlay) | |
1223 | * | |
1224 | * Legacy API to initialize a DRM plane. | |
1225 | * | |
1226 | * New drivers should call drm_universal_plane_init() instead. | |
1227 | * | |
1228 | * Returns: | |
1229 | * Zero on success, error code on failure. | |
1230 | */ | |
1231 | int drm_plane_init(struct drm_device *dev, struct drm_plane *plane, | |
1232 | unsigned long possible_crtcs, | |
1233 | const struct drm_plane_funcs *funcs, | |
1234 | const uint32_t *formats, uint32_t format_count, | |
1235 | bool is_primary) | |
1236 | { | |
1237 | enum drm_plane_type type; | |
1238 | ||
1239 | type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY; | |
1240 | return drm_universal_plane_init(dev, plane, possible_crtcs, funcs, | |
1241 | formats, format_count, type); | |
1242 | } | |
8cf5c917 JB |
1243 | EXPORT_SYMBOL(drm_plane_init); |
1244 | ||
35f2c3ae VS |
1245 | /** |
1246 | * drm_plane_cleanup - Clean up the core plane usage | |
1247 | * @plane: plane to cleanup | |
1248 | * | |
1249 | * This function cleans up @plane and removes it from the DRM mode setting | |
1250 | * core. Note that the function does *not* free the plane structure itself, | |
1251 | * this is the responsibility of the caller. | |
1252 | */ | |
8cf5c917 JB |
1253 | void drm_plane_cleanup(struct drm_plane *plane) |
1254 | { | |
1255 | struct drm_device *dev = plane->dev; | |
1256 | ||
84849903 | 1257 | drm_modeset_lock_all(dev); |
8cf5c917 JB |
1258 | kfree(plane->format_types); |
1259 | drm_mode_object_put(dev, &plane->base); | |
dc415ff9 MR |
1260 | |
1261 | BUG_ON(list_empty(&plane->head)); | |
1262 | ||
1263 | list_del(&plane->head); | |
1264 | dev->mode_config.num_total_plane--; | |
1265 | if (plane->type == DRM_PLANE_TYPE_OVERLAY) | |
1266 | dev->mode_config.num_overlay_plane--; | |
84849903 | 1267 | drm_modeset_unlock_all(dev); |
3009c037 TR |
1268 | |
1269 | WARN_ON(plane->state && !plane->funcs->atomic_destroy_state); | |
1270 | if (plane->state && plane->funcs->atomic_destroy_state) | |
1271 | plane->funcs->atomic_destroy_state(plane, plane->state); | |
a18c0af1 TR |
1272 | |
1273 | memset(plane, 0, sizeof(*plane)); | |
8cf5c917 JB |
1274 | } |
1275 | EXPORT_SYMBOL(drm_plane_cleanup); | |
1276 | ||
10f637bf DV |
1277 | /** |
1278 | * drm_plane_index - find the index of a registered plane | |
1279 | * @plane: plane to find index for | |
1280 | * | |
1281 | * Given a registered plane, return the index of that CRTC within a DRM | |
1282 | * device's list of planes. | |
1283 | */ | |
1284 | unsigned int drm_plane_index(struct drm_plane *plane) | |
1285 | { | |
1286 | unsigned int index = 0; | |
1287 | struct drm_plane *tmp; | |
1288 | ||
1289 | list_for_each_entry(tmp, &plane->dev->mode_config.plane_list, head) { | |
1290 | if (tmp == plane) | |
1291 | return index; | |
1292 | ||
1293 | index++; | |
1294 | } | |
1295 | ||
1296 | BUG(); | |
1297 | } | |
1298 | EXPORT_SYMBOL(drm_plane_index); | |
1299 | ||
35f2c3ae VS |
1300 | /** |
1301 | * drm_plane_force_disable - Forcibly disable a plane | |
1302 | * @plane: plane to disable | |
1303 | * | |
1304 | * Forces the plane to be disabled. | |
1305 | * | |
1306 | * Used when the plane's current framebuffer is destroyed, | |
1307 | * and when restoring fbdev mode. | |
1308 | */ | |
9125e618 VS |
1309 | void drm_plane_force_disable(struct drm_plane *plane) |
1310 | { | |
1311 | int ret; | |
1312 | ||
3d30a59b | 1313 | if (!plane->fb) |
9125e618 VS |
1314 | return; |
1315 | ||
3d30a59b | 1316 | plane->old_fb = plane->fb; |
9125e618 | 1317 | ret = plane->funcs->disable_plane(plane); |
731cce48 | 1318 | if (ret) { |
9125e618 | 1319 | DRM_ERROR("failed to disable plane with busy fb\n"); |
3d30a59b | 1320 | plane->old_fb = NULL; |
731cce48 DV |
1321 | return; |
1322 | } | |
9125e618 | 1323 | /* disconnect the plane from the fb and crtc: */ |
3d30a59b DV |
1324 | __drm_framebuffer_unreference(plane->old_fb); |
1325 | plane->old_fb = NULL; | |
9125e618 VS |
1326 | plane->fb = NULL; |
1327 | plane->crtc = NULL; | |
1328 | } | |
1329 | EXPORT_SYMBOL(drm_plane_force_disable); | |
1330 | ||
f453ba04 DA |
1331 | static int drm_mode_create_standard_connector_properties(struct drm_device *dev) |
1332 | { | |
1333 | struct drm_property *edid; | |
1334 | struct drm_property *dpms; | |
43aba7eb | 1335 | struct drm_property *dev_path; |
f453ba04 DA |
1336 | |
1337 | /* | |
1338 | * Standard properties (apply to all connectors) | |
1339 | */ | |
1340 | edid = drm_property_create(dev, DRM_MODE_PROP_BLOB | | |
1341 | DRM_MODE_PROP_IMMUTABLE, | |
1342 | "EDID", 0); | |
1343 | dev->mode_config.edid_property = edid; | |
1344 | ||
4a67d391 SH |
1345 | dpms = drm_property_create_enum(dev, 0, |
1346 | "DPMS", drm_dpms_enum_list, | |
1347 | ARRAY_SIZE(drm_dpms_enum_list)); | |
f453ba04 DA |
1348 | dev->mode_config.dpms_property = dpms; |
1349 | ||
43aba7eb DA |
1350 | dev_path = drm_property_create(dev, |
1351 | DRM_MODE_PROP_BLOB | | |
1352 | DRM_MODE_PROP_IMMUTABLE, | |
1353 | "PATH", 0); | |
1354 | dev->mode_config.path_property = dev_path; | |
1355 | ||
6f134d7b DA |
1356 | dev->mode_config.tile_property = drm_property_create(dev, |
1357 | DRM_MODE_PROP_BLOB | | |
1358 | DRM_MODE_PROP_IMMUTABLE, | |
1359 | "TILE", 0); | |
1360 | ||
f453ba04 DA |
1361 | return 0; |
1362 | } | |
1363 | ||
9922ab5a RC |
1364 | static int drm_mode_create_standard_plane_properties(struct drm_device *dev) |
1365 | { | |
1366 | struct drm_property *type; | |
1367 | ||
1368 | /* | |
1369 | * Standard properties (apply to all planes) | |
1370 | */ | |
1371 | type = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, | |
1372 | "type", drm_plane_type_enum_list, | |
1373 | ARRAY_SIZE(drm_plane_type_enum_list)); | |
1374 | dev->mode_config.plane_type_property = type; | |
1375 | ||
1376 | return 0; | |
1377 | } | |
1378 | ||
f453ba04 DA |
1379 | /** |
1380 | * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties | |
1381 | * @dev: DRM device | |
1382 | * | |
1383 | * Called by a driver the first time a DVI-I connector is made. | |
1384 | */ | |
1385 | int drm_mode_create_dvi_i_properties(struct drm_device *dev) | |
1386 | { | |
1387 | struct drm_property *dvi_i_selector; | |
1388 | struct drm_property *dvi_i_subconnector; | |
f453ba04 DA |
1389 | |
1390 | if (dev->mode_config.dvi_i_select_subconnector_property) | |
1391 | return 0; | |
1392 | ||
1393 | dvi_i_selector = | |
4a67d391 | 1394 | drm_property_create_enum(dev, 0, |
f453ba04 | 1395 | "select subconnector", |
4a67d391 | 1396 | drm_dvi_i_select_enum_list, |
f453ba04 | 1397 | ARRAY_SIZE(drm_dvi_i_select_enum_list)); |
f453ba04 DA |
1398 | dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector; |
1399 | ||
4a67d391 | 1400 | dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, |
f453ba04 | 1401 | "subconnector", |
4a67d391 | 1402 | drm_dvi_i_subconnector_enum_list, |
f453ba04 | 1403 | ARRAY_SIZE(drm_dvi_i_subconnector_enum_list)); |
f453ba04 DA |
1404 | dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector; |
1405 | ||
1406 | return 0; | |
1407 | } | |
1408 | EXPORT_SYMBOL(drm_mode_create_dvi_i_properties); | |
1409 | ||
1410 | /** | |
1411 | * drm_create_tv_properties - create TV specific connector properties | |
1412 | * @dev: DRM device | |
1413 | * @num_modes: number of different TV formats (modes) supported | |
1414 | * @modes: array of pointers to strings containing name of each format | |
1415 | * | |
1416 | * Called by a driver's TV initialization routine, this function creates | |
1417 | * the TV specific connector properties for a given device. Caller is | |
1418 | * responsible for allocating a list of format names and passing them to | |
1419 | * this routine. | |
1420 | */ | |
2f763312 TR |
1421 | int drm_mode_create_tv_properties(struct drm_device *dev, |
1422 | unsigned int num_modes, | |
f453ba04 DA |
1423 | char *modes[]) |
1424 | { | |
1425 | struct drm_property *tv_selector; | |
1426 | struct drm_property *tv_subconnector; | |
2f763312 | 1427 | unsigned int i; |
f453ba04 DA |
1428 | |
1429 | if (dev->mode_config.tv_select_subconnector_property) | |
1430 | return 0; | |
1431 | ||
1432 | /* | |
1433 | * Basic connector properties | |
1434 | */ | |
4a67d391 | 1435 | tv_selector = drm_property_create_enum(dev, 0, |
f453ba04 | 1436 | "select subconnector", |
4a67d391 | 1437 | drm_tv_select_enum_list, |
f453ba04 | 1438 | ARRAY_SIZE(drm_tv_select_enum_list)); |
f453ba04 DA |
1439 | dev->mode_config.tv_select_subconnector_property = tv_selector; |
1440 | ||
1441 | tv_subconnector = | |
4a67d391 SH |
1442 | drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, |
1443 | "subconnector", | |
1444 | drm_tv_subconnector_enum_list, | |
f453ba04 | 1445 | ARRAY_SIZE(drm_tv_subconnector_enum_list)); |
f453ba04 DA |
1446 | dev->mode_config.tv_subconnector_property = tv_subconnector; |
1447 | ||
1448 | /* | |
1449 | * Other, TV specific properties: margins & TV modes. | |
1450 | */ | |
1451 | dev->mode_config.tv_left_margin_property = | |
d9bc3c02 | 1452 | drm_property_create_range(dev, 0, "left margin", 0, 100); |
f453ba04 DA |
1453 | |
1454 | dev->mode_config.tv_right_margin_property = | |
d9bc3c02 | 1455 | drm_property_create_range(dev, 0, "right margin", 0, 100); |
f453ba04 DA |
1456 | |
1457 | dev->mode_config.tv_top_margin_property = | |
d9bc3c02 | 1458 | drm_property_create_range(dev, 0, "top margin", 0, 100); |
f453ba04 DA |
1459 | |
1460 | dev->mode_config.tv_bottom_margin_property = | |
d9bc3c02 | 1461 | drm_property_create_range(dev, 0, "bottom margin", 0, 100); |
f453ba04 DA |
1462 | |
1463 | dev->mode_config.tv_mode_property = | |
1464 | drm_property_create(dev, DRM_MODE_PROP_ENUM, | |
1465 | "mode", num_modes); | |
1466 | for (i = 0; i < num_modes; i++) | |
1467 | drm_property_add_enum(dev->mode_config.tv_mode_property, i, | |
1468 | i, modes[i]); | |
1469 | ||
b6b7902e | 1470 | dev->mode_config.tv_brightness_property = |
d9bc3c02 | 1471 | drm_property_create_range(dev, 0, "brightness", 0, 100); |
b6b7902e FJ |
1472 | |
1473 | dev->mode_config.tv_contrast_property = | |
d9bc3c02 | 1474 | drm_property_create_range(dev, 0, "contrast", 0, 100); |
b6b7902e FJ |
1475 | |
1476 | dev->mode_config.tv_flicker_reduction_property = | |
d9bc3c02 | 1477 | drm_property_create_range(dev, 0, "flicker reduction", 0, 100); |
b6b7902e | 1478 | |
a75f0236 | 1479 | dev->mode_config.tv_overscan_property = |
d9bc3c02 | 1480 | drm_property_create_range(dev, 0, "overscan", 0, 100); |
a75f0236 FJ |
1481 | |
1482 | dev->mode_config.tv_saturation_property = | |
d9bc3c02 | 1483 | drm_property_create_range(dev, 0, "saturation", 0, 100); |
a75f0236 FJ |
1484 | |
1485 | dev->mode_config.tv_hue_property = | |
d9bc3c02 | 1486 | drm_property_create_range(dev, 0, "hue", 0, 100); |
a75f0236 | 1487 | |
f453ba04 DA |
1488 | return 0; |
1489 | } | |
1490 | EXPORT_SYMBOL(drm_mode_create_tv_properties); | |
1491 | ||
1492 | /** | |
1493 | * drm_mode_create_scaling_mode_property - create scaling mode property | |
1494 | * @dev: DRM device | |
1495 | * | |
1496 | * Called by a driver the first time it's needed, must be attached to desired | |
1497 | * connectors. | |
1498 | */ | |
1499 | int drm_mode_create_scaling_mode_property(struct drm_device *dev) | |
1500 | { | |
1501 | struct drm_property *scaling_mode; | |
f453ba04 DA |
1502 | |
1503 | if (dev->mode_config.scaling_mode_property) | |
1504 | return 0; | |
1505 | ||
1506 | scaling_mode = | |
4a67d391 SH |
1507 | drm_property_create_enum(dev, 0, "scaling mode", |
1508 | drm_scaling_mode_enum_list, | |
f453ba04 | 1509 | ARRAY_SIZE(drm_scaling_mode_enum_list)); |
f453ba04 DA |
1510 | |
1511 | dev->mode_config.scaling_mode_property = scaling_mode; | |
1512 | ||
1513 | return 0; | |
1514 | } | |
1515 | EXPORT_SYMBOL(drm_mode_create_scaling_mode_property); | |
1516 | ||
ff587e45 VK |
1517 | /** |
1518 | * drm_mode_create_aspect_ratio_property - create aspect ratio property | |
1519 | * @dev: DRM device | |
1520 | * | |
1521 | * Called by a driver the first time it's needed, must be attached to desired | |
1522 | * connectors. | |
1523 | * | |
1524 | * Returns: | |
1a498633 | 1525 | * Zero on success, negative errno on failure. |
ff587e45 VK |
1526 | */ |
1527 | int drm_mode_create_aspect_ratio_property(struct drm_device *dev) | |
1528 | { | |
1529 | if (dev->mode_config.aspect_ratio_property) | |
1530 | return 0; | |
1531 | ||
1532 | dev->mode_config.aspect_ratio_property = | |
1533 | drm_property_create_enum(dev, 0, "aspect ratio", | |
1534 | drm_aspect_ratio_enum_list, | |
1535 | ARRAY_SIZE(drm_aspect_ratio_enum_list)); | |
1536 | ||
1537 | if (dev->mode_config.aspect_ratio_property == NULL) | |
1538 | return -ENOMEM; | |
1539 | ||
1540 | return 0; | |
1541 | } | |
1542 | EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property); | |
1543 | ||
884840aa JB |
1544 | /** |
1545 | * drm_mode_create_dirty_property - create dirty property | |
1546 | * @dev: DRM device | |
1547 | * | |
1548 | * Called by a driver the first time it's needed, must be attached to desired | |
1549 | * connectors. | |
1550 | */ | |
1551 | int drm_mode_create_dirty_info_property(struct drm_device *dev) | |
1552 | { | |
1553 | struct drm_property *dirty_info; | |
884840aa JB |
1554 | |
1555 | if (dev->mode_config.dirty_info_property) | |
1556 | return 0; | |
1557 | ||
1558 | dirty_info = | |
4a67d391 | 1559 | drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, |
884840aa | 1560 | "dirty", |
4a67d391 | 1561 | drm_dirty_info_enum_list, |
884840aa | 1562 | ARRAY_SIZE(drm_dirty_info_enum_list)); |
884840aa JB |
1563 | dev->mode_config.dirty_info_property = dirty_info; |
1564 | ||
1565 | return 0; | |
1566 | } | |
1567 | EXPORT_SYMBOL(drm_mode_create_dirty_info_property); | |
1568 | ||
5bb2bbf5 DA |
1569 | /** |
1570 | * drm_mode_create_suggested_offset_properties - create suggests offset properties | |
1571 | * @dev: DRM device | |
1572 | * | |
1573 | * Create the the suggested x/y offset property for connectors. | |
1574 | */ | |
1575 | int drm_mode_create_suggested_offset_properties(struct drm_device *dev) | |
1576 | { | |
1577 | if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property) | |
1578 | return 0; | |
1579 | ||
1580 | dev->mode_config.suggested_x_property = | |
1581 | drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff); | |
1582 | ||
1583 | dev->mode_config.suggested_y_property = | |
1584 | drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff); | |
1585 | ||
1586 | if (dev->mode_config.suggested_x_property == NULL || | |
1587 | dev->mode_config.suggested_y_property == NULL) | |
1588 | return -ENOMEM; | |
1589 | return 0; | |
1590 | } | |
1591 | EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties); | |
1592 | ||
ea9cbb06 | 1593 | static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group) |
f453ba04 DA |
1594 | { |
1595 | uint32_t total_objects = 0; | |
1596 | ||
1597 | total_objects += dev->mode_config.num_crtc; | |
1598 | total_objects += dev->mode_config.num_connector; | |
1599 | total_objects += dev->mode_config.num_encoder; | |
3b336ec4 | 1600 | total_objects += dev->mode_config.num_bridge; |
f453ba04 | 1601 | |
f453ba04 DA |
1602 | group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL); |
1603 | if (!group->id_list) | |
1604 | return -ENOMEM; | |
1605 | ||
1606 | group->num_crtcs = 0; | |
1607 | group->num_connectors = 0; | |
1608 | group->num_encoders = 0; | |
3b336ec4 | 1609 | group->num_bridges = 0; |
f453ba04 DA |
1610 | return 0; |
1611 | } | |
1612 | ||
ad222799 DA |
1613 | void drm_mode_group_destroy(struct drm_mode_group *group) |
1614 | { | |
1615 | kfree(group->id_list); | |
1616 | group->id_list = NULL; | |
1617 | } | |
1618 | ||
c8e32cc1 DV |
1619 | /* |
1620 | * NOTE: Driver's shouldn't ever call drm_mode_group_init_legacy_group - it is | |
1621 | * the drm core's responsibility to set up mode control groups. | |
1622 | */ | |
f453ba04 DA |
1623 | int drm_mode_group_init_legacy_group(struct drm_device *dev, |
1624 | struct drm_mode_group *group) | |
1625 | { | |
1626 | struct drm_crtc *crtc; | |
1627 | struct drm_encoder *encoder; | |
1628 | struct drm_connector *connector; | |
3b336ec4 | 1629 | struct drm_bridge *bridge; |
f453ba04 DA |
1630 | int ret; |
1631 | ||
1632 | if ((ret = drm_mode_group_init(dev, group))) | |
1633 | return ret; | |
1634 | ||
1635 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) | |
1636 | group->id_list[group->num_crtcs++] = crtc->base.id; | |
1637 | ||
1638 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) | |
1639 | group->id_list[group->num_crtcs + group->num_encoders++] = | |
1640 | encoder->base.id; | |
1641 | ||
1642 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) | |
1643 | group->id_list[group->num_crtcs + group->num_encoders + | |
1644 | group->num_connectors++] = connector->base.id; | |
1645 | ||
3b336ec4 SP |
1646 | list_for_each_entry(bridge, &dev->mode_config.bridge_list, head) |
1647 | group->id_list[group->num_crtcs + group->num_encoders + | |
1648 | group->num_connectors + group->num_bridges++] = | |
1649 | bridge->base.id; | |
1650 | ||
f453ba04 DA |
1651 | return 0; |
1652 | } | |
9c1dfc55 | 1653 | EXPORT_SYMBOL(drm_mode_group_init_legacy_group); |
f453ba04 | 1654 | |
2390cd11 DA |
1655 | void drm_reinit_primary_mode_group(struct drm_device *dev) |
1656 | { | |
1657 | drm_modeset_lock_all(dev); | |
1658 | drm_mode_group_destroy(&dev->primary->mode_group); | |
1659 | drm_mode_group_init_legacy_group(dev, &dev->primary->mode_group); | |
1660 | drm_modeset_unlock_all(dev); | |
1661 | } | |
1662 | EXPORT_SYMBOL(drm_reinit_primary_mode_group); | |
1663 | ||
f453ba04 DA |
1664 | /** |
1665 | * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo | |
1666 | * @out: drm_mode_modeinfo struct to return to the user | |
1667 | * @in: drm_display_mode to use | |
1668 | * | |
f453ba04 DA |
1669 | * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to |
1670 | * the user. | |
1671 | */ | |
93bbf6db VS |
1672 | static void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out, |
1673 | const struct drm_display_mode *in) | |
f453ba04 | 1674 | { |
e36fae38 VS |
1675 | WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX || |
1676 | in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX || | |
1677 | in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX || | |
1678 | in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX || | |
1679 | in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX, | |
1680 | "timing values too large for mode info\n"); | |
1681 | ||
f453ba04 DA |
1682 | out->clock = in->clock; |
1683 | out->hdisplay = in->hdisplay; | |
1684 | out->hsync_start = in->hsync_start; | |
1685 | out->hsync_end = in->hsync_end; | |
1686 | out->htotal = in->htotal; | |
1687 | out->hskew = in->hskew; | |
1688 | out->vdisplay = in->vdisplay; | |
1689 | out->vsync_start = in->vsync_start; | |
1690 | out->vsync_end = in->vsync_end; | |
1691 | out->vtotal = in->vtotal; | |
1692 | out->vscan = in->vscan; | |
1693 | out->vrefresh = in->vrefresh; | |
1694 | out->flags = in->flags; | |
1695 | out->type = in->type; | |
1696 | strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); | |
1697 | out->name[DRM_DISPLAY_MODE_LEN-1] = 0; | |
1698 | } | |
1699 | ||
1700 | /** | |
74afee7d | 1701 | * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode |
f453ba04 DA |
1702 | * @out: drm_display_mode to return to the user |
1703 | * @in: drm_mode_modeinfo to use | |
1704 | * | |
f453ba04 DA |
1705 | * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to |
1706 | * the caller. | |
90367bf6 | 1707 | * |
c8e32cc1 | 1708 | * Returns: |
1a498633 | 1709 | * Zero on success, negative errno on failure. |
f453ba04 | 1710 | */ |
93bbf6db VS |
1711 | static int drm_crtc_convert_umode(struct drm_display_mode *out, |
1712 | const struct drm_mode_modeinfo *in) | |
f453ba04 | 1713 | { |
90367bf6 VS |
1714 | if (in->clock > INT_MAX || in->vrefresh > INT_MAX) |
1715 | return -ERANGE; | |
1716 | ||
5848ad40 DL |
1717 | if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX) |
1718 | return -EINVAL; | |
1719 | ||
f453ba04 DA |
1720 | out->clock = in->clock; |
1721 | out->hdisplay = in->hdisplay; | |
1722 | out->hsync_start = in->hsync_start; | |
1723 | out->hsync_end = in->hsync_end; | |
1724 | out->htotal = in->htotal; | |
1725 | out->hskew = in->hskew; | |
1726 | out->vdisplay = in->vdisplay; | |
1727 | out->vsync_start = in->vsync_start; | |
1728 | out->vsync_end = in->vsync_end; | |
1729 | out->vtotal = in->vtotal; | |
1730 | out->vscan = in->vscan; | |
1731 | out->vrefresh = in->vrefresh; | |
1732 | out->flags = in->flags; | |
1733 | out->type = in->type; | |
1734 | strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); | |
1735 | out->name[DRM_DISPLAY_MODE_LEN-1] = 0; | |
90367bf6 VS |
1736 | |
1737 | return 0; | |
f453ba04 DA |
1738 | } |
1739 | ||
1740 | /** | |
1741 | * drm_mode_getresources - get graphics configuration | |
065a50ed DV |
1742 | * @dev: drm device for the ioctl |
1743 | * @data: data pointer for the ioctl | |
1744 | * @file_priv: drm file for the ioctl call | |
f453ba04 | 1745 | * |
f453ba04 DA |
1746 | * Construct a set of configuration description structures and return |
1747 | * them to the user, including CRTC, connector and framebuffer configuration. | |
1748 | * | |
1749 | * Called by the user via ioctl. | |
1750 | * | |
c8e32cc1 | 1751 | * Returns: |
1a498633 | 1752 | * Zero on success, negative errno on failure. |
f453ba04 DA |
1753 | */ |
1754 | int drm_mode_getresources(struct drm_device *dev, void *data, | |
1755 | struct drm_file *file_priv) | |
1756 | { | |
1757 | struct drm_mode_card_res *card_res = data; | |
1758 | struct list_head *lh; | |
1759 | struct drm_framebuffer *fb; | |
1760 | struct drm_connector *connector; | |
1761 | struct drm_crtc *crtc; | |
1762 | struct drm_encoder *encoder; | |
1763 | int ret = 0; | |
1764 | int connector_count = 0; | |
1765 | int crtc_count = 0; | |
1766 | int fb_count = 0; | |
1767 | int encoder_count = 0; | |
1768 | int copied = 0, i; | |
1769 | uint32_t __user *fb_id; | |
1770 | uint32_t __user *crtc_id; | |
1771 | uint32_t __user *connector_id; | |
1772 | uint32_t __user *encoder_id; | |
1773 | struct drm_mode_group *mode_group; | |
1774 | ||
fb3b06c8 DA |
1775 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
1776 | return -EINVAL; | |
1777 | ||
f453ba04 | 1778 | |
4b096ac1 | 1779 | mutex_lock(&file_priv->fbs_lock); |
f453ba04 DA |
1780 | /* |
1781 | * For the non-control nodes we need to limit the list of resources | |
1782 | * by IDs in the group list for this node | |
1783 | */ | |
1784 | list_for_each(lh, &file_priv->fbs) | |
1785 | fb_count++; | |
1786 | ||
4b096ac1 DV |
1787 | /* handle this in 4 parts */ |
1788 | /* FBs */ | |
1789 | if (card_res->count_fbs >= fb_count) { | |
1790 | copied = 0; | |
1791 | fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr; | |
1792 | list_for_each_entry(fb, &file_priv->fbs, filp_head) { | |
1793 | if (put_user(fb->base.id, fb_id + copied)) { | |
1794 | mutex_unlock(&file_priv->fbs_lock); | |
1795 | return -EFAULT; | |
1796 | } | |
1797 | copied++; | |
1798 | } | |
1799 | } | |
1800 | card_res->count_fbs = fb_count; | |
1801 | mutex_unlock(&file_priv->fbs_lock); | |
1802 | ||
fcf93f69 DV |
1803 | /* mode_config.mutex protects the connector list against e.g. DP MST |
1804 | * connector hot-adding. CRTC/Plane lists are invariant. */ | |
1805 | mutex_lock(&dev->mode_config.mutex); | |
43683057 | 1806 | if (!drm_is_primary_client(file_priv)) { |
f453ba04 | 1807 | |
09f308f7 | 1808 | mode_group = NULL; |
f453ba04 DA |
1809 | list_for_each(lh, &dev->mode_config.crtc_list) |
1810 | crtc_count++; | |
1811 | ||
1812 | list_for_each(lh, &dev->mode_config.connector_list) | |
1813 | connector_count++; | |
1814 | ||
1815 | list_for_each(lh, &dev->mode_config.encoder_list) | |
1816 | encoder_count++; | |
1817 | } else { | |
1818 | ||
09f308f7 | 1819 | mode_group = &file_priv->master->minor->mode_group; |
f453ba04 DA |
1820 | crtc_count = mode_group->num_crtcs; |
1821 | connector_count = mode_group->num_connectors; | |
1822 | encoder_count = mode_group->num_encoders; | |
1823 | } | |
1824 | ||
1825 | card_res->max_height = dev->mode_config.max_height; | |
1826 | card_res->min_height = dev->mode_config.min_height; | |
1827 | card_res->max_width = dev->mode_config.max_width; | |
1828 | card_res->min_width = dev->mode_config.min_width; | |
1829 | ||
f453ba04 DA |
1830 | /* CRTCs */ |
1831 | if (card_res->count_crtcs >= crtc_count) { | |
1832 | copied = 0; | |
1833 | crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr; | |
09f308f7 | 1834 | if (!mode_group) { |
f453ba04 DA |
1835 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, |
1836 | head) { | |
9440106b | 1837 | DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); |
f453ba04 DA |
1838 | if (put_user(crtc->base.id, crtc_id + copied)) { |
1839 | ret = -EFAULT; | |
1840 | goto out; | |
1841 | } | |
1842 | copied++; | |
1843 | } | |
1844 | } else { | |
1845 | for (i = 0; i < mode_group->num_crtcs; i++) { | |
1846 | if (put_user(mode_group->id_list[i], | |
1847 | crtc_id + copied)) { | |
1848 | ret = -EFAULT; | |
1849 | goto out; | |
1850 | } | |
1851 | copied++; | |
1852 | } | |
1853 | } | |
1854 | } | |
1855 | card_res->count_crtcs = crtc_count; | |
1856 | ||
1857 | /* Encoders */ | |
1858 | if (card_res->count_encoders >= encoder_count) { | |
1859 | copied = 0; | |
1860 | encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr; | |
09f308f7 | 1861 | if (!mode_group) { |
f453ba04 DA |
1862 | list_for_each_entry(encoder, |
1863 | &dev->mode_config.encoder_list, | |
1864 | head) { | |
9440106b | 1865 | DRM_DEBUG_KMS("[ENCODER:%d:%s]\n", encoder->base.id, |
83a8cfd3 | 1866 | encoder->name); |
f453ba04 DA |
1867 | if (put_user(encoder->base.id, encoder_id + |
1868 | copied)) { | |
1869 | ret = -EFAULT; | |
1870 | goto out; | |
1871 | } | |
1872 | copied++; | |
1873 | } | |
1874 | } else { | |
1875 | for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) { | |
1876 | if (put_user(mode_group->id_list[i], | |
1877 | encoder_id + copied)) { | |
1878 | ret = -EFAULT; | |
1879 | goto out; | |
1880 | } | |
1881 | copied++; | |
1882 | } | |
1883 | ||
1884 | } | |
1885 | } | |
1886 | card_res->count_encoders = encoder_count; | |
1887 | ||
1888 | /* Connectors */ | |
1889 | if (card_res->count_connectors >= connector_count) { | |
1890 | copied = 0; | |
1891 | connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr; | |
09f308f7 | 1892 | if (!mode_group) { |
f453ba04 DA |
1893 | list_for_each_entry(connector, |
1894 | &dev->mode_config.connector_list, | |
1895 | head) { | |
9440106b JG |
1896 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
1897 | connector->base.id, | |
25933820 | 1898 | connector->name); |
f453ba04 DA |
1899 | if (put_user(connector->base.id, |
1900 | connector_id + copied)) { | |
1901 | ret = -EFAULT; | |
1902 | goto out; | |
1903 | } | |
1904 | copied++; | |
1905 | } | |
1906 | } else { | |
1907 | int start = mode_group->num_crtcs + | |
1908 | mode_group->num_encoders; | |
1909 | for (i = start; i < start + mode_group->num_connectors; i++) { | |
1910 | if (put_user(mode_group->id_list[i], | |
1911 | connector_id + copied)) { | |
1912 | ret = -EFAULT; | |
1913 | goto out; | |
1914 | } | |
1915 | copied++; | |
1916 | } | |
1917 | } | |
1918 | } | |
1919 | card_res->count_connectors = connector_count; | |
1920 | ||
9440106b | 1921 | DRM_DEBUG_KMS("CRTC[%d] CONNECTORS[%d] ENCODERS[%d]\n", card_res->count_crtcs, |
f453ba04 DA |
1922 | card_res->count_connectors, card_res->count_encoders); |
1923 | ||
1924 | out: | |
fcf93f69 | 1925 | mutex_unlock(&dev->mode_config.mutex); |
f453ba04 DA |
1926 | return ret; |
1927 | } | |
1928 | ||
1929 | /** | |
1930 | * drm_mode_getcrtc - get CRTC configuration | |
065a50ed DV |
1931 | * @dev: drm device for the ioctl |
1932 | * @data: data pointer for the ioctl | |
1933 | * @file_priv: drm file for the ioctl call | |
f453ba04 | 1934 | * |
f453ba04 DA |
1935 | * Construct a CRTC configuration structure to return to the user. |
1936 | * | |
1937 | * Called by the user via ioctl. | |
1938 | * | |
c8e32cc1 | 1939 | * Returns: |
1a498633 | 1940 | * Zero on success, negative errno on failure. |
f453ba04 DA |
1941 | */ |
1942 | int drm_mode_getcrtc(struct drm_device *dev, | |
1943 | void *data, struct drm_file *file_priv) | |
1944 | { | |
1945 | struct drm_mode_crtc *crtc_resp = data; | |
1946 | struct drm_crtc *crtc; | |
f453ba04 | 1947 | |
fb3b06c8 DA |
1948 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
1949 | return -EINVAL; | |
1950 | ||
a2b34e22 | 1951 | crtc = drm_crtc_find(dev, crtc_resp->crtc_id); |
fcf93f69 DV |
1952 | if (!crtc) |
1953 | return -ENOENT; | |
f453ba04 | 1954 | |
fcf93f69 | 1955 | drm_modeset_lock_crtc(crtc, crtc->primary); |
f453ba04 DA |
1956 | crtc_resp->x = crtc->x; |
1957 | crtc_resp->y = crtc->y; | |
1958 | crtc_resp->gamma_size = crtc->gamma_size; | |
f4510a27 MR |
1959 | if (crtc->primary->fb) |
1960 | crtc_resp->fb_id = crtc->primary->fb->base.id; | |
f453ba04 DA |
1961 | else |
1962 | crtc_resp->fb_id = 0; | |
1963 | ||
1964 | if (crtc->enabled) { | |
1965 | ||
1966 | drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode); | |
1967 | crtc_resp->mode_valid = 1; | |
1968 | ||
1969 | } else { | |
1970 | crtc_resp->mode_valid = 0; | |
1971 | } | |
fcf93f69 | 1972 | drm_modeset_unlock_crtc(crtc); |
f453ba04 | 1973 | |
baf698b0 | 1974 | return 0; |
f453ba04 DA |
1975 | } |
1976 | ||
61d8e328 DL |
1977 | static bool drm_mode_expose_to_userspace(const struct drm_display_mode *mode, |
1978 | const struct drm_file *file_priv) | |
1979 | { | |
1980 | /* | |
1981 | * If user-space hasn't configured the driver to expose the stereo 3D | |
1982 | * modes, don't expose them. | |
1983 | */ | |
1984 | if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode)) | |
1985 | return false; | |
1986 | ||
1987 | return true; | |
1988 | } | |
1989 | ||
abd69c55 DV |
1990 | static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector) |
1991 | { | |
1992 | /* For atomic drivers only state objects are synchronously updated and | |
1993 | * protected by modeset locks, so check those first. */ | |
1994 | if (connector->state) | |
1995 | return connector->state->best_encoder; | |
1996 | return connector->encoder; | |
1997 | } | |
1998 | ||
f453ba04 DA |
1999 | /** |
2000 | * drm_mode_getconnector - get connector configuration | |
065a50ed DV |
2001 | * @dev: drm device for the ioctl |
2002 | * @data: data pointer for the ioctl | |
2003 | * @file_priv: drm file for the ioctl call | |
f453ba04 | 2004 | * |
f453ba04 DA |
2005 | * Construct a connector configuration structure to return to the user. |
2006 | * | |
2007 | * Called by the user via ioctl. | |
2008 | * | |
c8e32cc1 | 2009 | * Returns: |
1a498633 | 2010 | * Zero on success, negative errno on failure. |
f453ba04 DA |
2011 | */ |
2012 | int drm_mode_getconnector(struct drm_device *dev, void *data, | |
2013 | struct drm_file *file_priv) | |
2014 | { | |
2015 | struct drm_mode_get_connector *out_resp = data; | |
f453ba04 | 2016 | struct drm_connector *connector; |
abd69c55 | 2017 | struct drm_encoder *encoder; |
f453ba04 DA |
2018 | struct drm_display_mode *mode; |
2019 | int mode_count = 0; | |
2020 | int props_count = 0; | |
2021 | int encoders_count = 0; | |
2022 | int ret = 0; | |
2023 | int copied = 0; | |
2024 | int i; | |
2025 | struct drm_mode_modeinfo u_mode; | |
2026 | struct drm_mode_modeinfo __user *mode_ptr; | |
2027 | uint32_t __user *prop_ptr; | |
2028 | uint64_t __user *prop_values; | |
2029 | uint32_t __user *encoder_ptr; | |
2030 | ||
fb3b06c8 DA |
2031 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
2032 | return -EINVAL; | |
2033 | ||
f453ba04 DA |
2034 | memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo)); |
2035 | ||
9440106b | 2036 | DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id); |
f453ba04 | 2037 | |
7b24056b | 2038 | mutex_lock(&dev->mode_config.mutex); |
f453ba04 | 2039 | |
a2b34e22 RC |
2040 | connector = drm_connector_find(dev, out_resp->connector_id); |
2041 | if (!connector) { | |
f27657f2 | 2042 | ret = -ENOENT; |
f453ba04 DA |
2043 | goto out; |
2044 | } | |
f453ba04 | 2045 | |
7f88a9be | 2046 | props_count = connector->properties.count; |
f453ba04 DA |
2047 | |
2048 | for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { | |
2049 | if (connector->encoder_ids[i] != 0) { | |
2050 | encoders_count++; | |
2051 | } | |
2052 | } | |
2053 | ||
2054 | if (out_resp->count_modes == 0) { | |
2055 | connector->funcs->fill_modes(connector, | |
2056 | dev->mode_config.max_width, | |
2057 | dev->mode_config.max_height); | |
2058 | } | |
2059 | ||
2060 | /* delayed so we get modes regardless of pre-fill_modes state */ | |
2061 | list_for_each_entry(mode, &connector->modes, head) | |
61d8e328 DL |
2062 | if (drm_mode_expose_to_userspace(mode, file_priv)) |
2063 | mode_count++; | |
f453ba04 DA |
2064 | |
2065 | out_resp->connector_id = connector->base.id; | |
2066 | out_resp->connector_type = connector->connector_type; | |
2067 | out_resp->connector_type_id = connector->connector_type_id; | |
2068 | out_resp->mm_width = connector->display_info.width_mm; | |
2069 | out_resp->mm_height = connector->display_info.height_mm; | |
2070 | out_resp->subpixel = connector->display_info.subpixel_order; | |
2071 | out_resp->connection = connector->status; | |
832fd395 | 2072 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); |
abd69c55 DV |
2073 | |
2074 | encoder = drm_connector_get_encoder(connector); | |
2075 | if (encoder) | |
2076 | out_resp->encoder_id = encoder->base.id; | |
f453ba04 DA |
2077 | else |
2078 | out_resp->encoder_id = 0; | |
832fd395 | 2079 | drm_modeset_unlock(&dev->mode_config.connection_mutex); |
f453ba04 DA |
2080 | |
2081 | /* | |
2082 | * This ioctl is called twice, once to determine how much space is | |
2083 | * needed, and the 2nd time to fill it. | |
2084 | */ | |
2085 | if ((out_resp->count_modes >= mode_count) && mode_count) { | |
2086 | copied = 0; | |
81f6c7f8 | 2087 | mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr; |
f453ba04 | 2088 | list_for_each_entry(mode, &connector->modes, head) { |
61d8e328 DL |
2089 | if (!drm_mode_expose_to_userspace(mode, file_priv)) |
2090 | continue; | |
2091 | ||
f453ba04 DA |
2092 | drm_crtc_convert_to_umode(&u_mode, mode); |
2093 | if (copy_to_user(mode_ptr + copied, | |
2094 | &u_mode, sizeof(u_mode))) { | |
2095 | ret = -EFAULT; | |
2096 | goto out; | |
2097 | } | |
2098 | copied++; | |
2099 | } | |
2100 | } | |
2101 | out_resp->count_modes = mode_count; | |
2102 | ||
2103 | if ((out_resp->count_props >= props_count) && props_count) { | |
2104 | copied = 0; | |
81f6c7f8 VS |
2105 | prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr); |
2106 | prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr); | |
7f88a9be | 2107 | for (i = 0; i < connector->properties.count; i++) { |
b17cd757 RC |
2108 | struct drm_property *prop = connector->properties.properties[i]; |
2109 | if (put_user(prop->base.id, prop_ptr + copied)) { | |
7f88a9be PZ |
2110 | ret = -EFAULT; |
2111 | goto out; | |
2112 | } | |
7f88a9be PZ |
2113 | if (put_user(connector->properties.values[i], |
2114 | prop_values + copied)) { | |
2115 | ret = -EFAULT; | |
2116 | goto out; | |
f453ba04 | 2117 | } |
7f88a9be | 2118 | copied++; |
f453ba04 DA |
2119 | } |
2120 | } | |
2121 | out_resp->count_props = props_count; | |
2122 | ||
2123 | if ((out_resp->count_encoders >= encoders_count) && encoders_count) { | |
2124 | copied = 0; | |
81f6c7f8 | 2125 | encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr); |
f453ba04 DA |
2126 | for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { |
2127 | if (connector->encoder_ids[i] != 0) { | |
2128 | if (put_user(connector->encoder_ids[i], | |
2129 | encoder_ptr + copied)) { | |
2130 | ret = -EFAULT; | |
2131 | goto out; | |
2132 | } | |
2133 | copied++; | |
2134 | } | |
2135 | } | |
2136 | } | |
2137 | out_resp->count_encoders = encoders_count; | |
2138 | ||
2139 | out: | |
7b24056b DV |
2140 | mutex_unlock(&dev->mode_config.mutex); |
2141 | ||
f453ba04 DA |
2142 | return ret; |
2143 | } | |
2144 | ||
abd69c55 DV |
2145 | static struct drm_crtc *drm_encoder_get_crtc(struct drm_encoder *encoder) |
2146 | { | |
2147 | struct drm_connector *connector; | |
2148 | struct drm_device *dev = encoder->dev; | |
2149 | bool uses_atomic = false; | |
2150 | ||
2151 | /* For atomic drivers only state objects are synchronously updated and | |
2152 | * protected by modeset locks, so check those first. */ | |
2153 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
2154 | if (!connector->state) | |
2155 | continue; | |
2156 | ||
2157 | uses_atomic = true; | |
2158 | ||
2159 | if (connector->state->best_encoder != encoder) | |
2160 | continue; | |
2161 | ||
2162 | return connector->state->crtc; | |
2163 | } | |
2164 | ||
2165 | /* Don't return stale data (e.g. pending async disable). */ | |
2166 | if (uses_atomic) | |
2167 | return NULL; | |
2168 | ||
2169 | return encoder->crtc; | |
2170 | } | |
2171 | ||
c8e32cc1 DV |
2172 | /** |
2173 | * drm_mode_getencoder - get encoder configuration | |
2174 | * @dev: drm device for the ioctl | |
2175 | * @data: data pointer for the ioctl | |
2176 | * @file_priv: drm file for the ioctl call | |
2177 | * | |
2178 | * Construct a encoder configuration structure to return to the user. | |
2179 | * | |
2180 | * Called by the user via ioctl. | |
2181 | * | |
2182 | * Returns: | |
1a498633 | 2183 | * Zero on success, negative errno on failure. |
c8e32cc1 | 2184 | */ |
f453ba04 DA |
2185 | int drm_mode_getencoder(struct drm_device *dev, void *data, |
2186 | struct drm_file *file_priv) | |
2187 | { | |
2188 | struct drm_mode_get_encoder *enc_resp = data; | |
f453ba04 | 2189 | struct drm_encoder *encoder; |
abd69c55 | 2190 | struct drm_crtc *crtc; |
f453ba04 | 2191 | |
fb3b06c8 DA |
2192 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
2193 | return -EINVAL; | |
2194 | ||
a2b34e22 | 2195 | encoder = drm_encoder_find(dev, enc_resp->encoder_id); |
fcf93f69 DV |
2196 | if (!encoder) |
2197 | return -ENOENT; | |
f453ba04 | 2198 | |
fcf93f69 | 2199 | drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); |
abd69c55 DV |
2200 | crtc = drm_encoder_get_crtc(encoder); |
2201 | if (crtc) | |
2202 | enc_resp->crtc_id = crtc->base.id; | |
2203 | else if (encoder->crtc) | |
f453ba04 DA |
2204 | enc_resp->crtc_id = encoder->crtc->base.id; |
2205 | else | |
2206 | enc_resp->crtc_id = 0; | |
fcf93f69 DV |
2207 | drm_modeset_unlock(&dev->mode_config.connection_mutex); |
2208 | ||
f453ba04 DA |
2209 | enc_resp->encoder_type = encoder->encoder_type; |
2210 | enc_resp->encoder_id = encoder->base.id; | |
2211 | enc_resp->possible_crtcs = encoder->possible_crtcs; | |
2212 | enc_resp->possible_clones = encoder->possible_clones; | |
2213 | ||
baf698b0 | 2214 | return 0; |
f453ba04 DA |
2215 | } |
2216 | ||
8cf5c917 | 2217 | /** |
c8e32cc1 | 2218 | * drm_mode_getplane_res - enumerate all plane resources |
8cf5c917 JB |
2219 | * @dev: DRM device |
2220 | * @data: ioctl data | |
2221 | * @file_priv: DRM file info | |
2222 | * | |
c8e32cc1 DV |
2223 | * Construct a list of plane ids to return to the user. |
2224 | * | |
2225 | * Called by the user via ioctl. | |
2226 | * | |
2227 | * Returns: | |
1a498633 | 2228 | * Zero on success, negative errno on failure. |
8cf5c917 JB |
2229 | */ |
2230 | int drm_mode_getplane_res(struct drm_device *dev, void *data, | |
c8e32cc1 | 2231 | struct drm_file *file_priv) |
8cf5c917 JB |
2232 | { |
2233 | struct drm_mode_get_plane_res *plane_resp = data; | |
2234 | struct drm_mode_config *config; | |
2235 | struct drm_plane *plane; | |
2236 | uint32_t __user *plane_ptr; | |
fcf93f69 | 2237 | int copied = 0; |
681e7ec7 | 2238 | unsigned num_planes; |
8cf5c917 JB |
2239 | |
2240 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
2241 | return -EINVAL; | |
2242 | ||
8cf5c917 JB |
2243 | config = &dev->mode_config; |
2244 | ||
681e7ec7 MR |
2245 | if (file_priv->universal_planes) |
2246 | num_planes = config->num_total_plane; | |
2247 | else | |
2248 | num_planes = config->num_overlay_plane; | |
2249 | ||
8cf5c917 JB |
2250 | /* |
2251 | * This ioctl is called twice, once to determine how much space is | |
2252 | * needed, and the 2nd time to fill it. | |
2253 | */ | |
681e7ec7 MR |
2254 | if (num_planes && |
2255 | (plane_resp->count_planes >= num_planes)) { | |
81f6c7f8 | 2256 | plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr; |
8cf5c917 | 2257 | |
fcf93f69 | 2258 | /* Plane lists are invariant, no locking needed. */ |
8cf5c917 | 2259 | list_for_each_entry(plane, &config->plane_list, head) { |
681e7ec7 MR |
2260 | /* |
2261 | * Unless userspace set the 'universal planes' | |
2262 | * capability bit, only advertise overlays. | |
2263 | */ | |
2264 | if (plane->type != DRM_PLANE_TYPE_OVERLAY && | |
2265 | !file_priv->universal_planes) | |
e27dde3e MR |
2266 | continue; |
2267 | ||
fcf93f69 DV |
2268 | if (put_user(plane->base.id, plane_ptr + copied)) |
2269 | return -EFAULT; | |
8cf5c917 JB |
2270 | copied++; |
2271 | } | |
2272 | } | |
681e7ec7 | 2273 | plane_resp->count_planes = num_planes; |
8cf5c917 | 2274 | |
fcf93f69 | 2275 | return 0; |
8cf5c917 JB |
2276 | } |
2277 | ||
2278 | /** | |
c8e32cc1 | 2279 | * drm_mode_getplane - get plane configuration |
8cf5c917 JB |
2280 | * @dev: DRM device |
2281 | * @data: ioctl data | |
2282 | * @file_priv: DRM file info | |
2283 | * | |
c8e32cc1 DV |
2284 | * Construct a plane configuration structure to return to the user. |
2285 | * | |
2286 | * Called by the user via ioctl. | |
2287 | * | |
2288 | * Returns: | |
1a498633 | 2289 | * Zero on success, negative errno on failure. |
8cf5c917 JB |
2290 | */ |
2291 | int drm_mode_getplane(struct drm_device *dev, void *data, | |
c8e32cc1 | 2292 | struct drm_file *file_priv) |
8cf5c917 JB |
2293 | { |
2294 | struct drm_mode_get_plane *plane_resp = data; | |
8cf5c917 JB |
2295 | struct drm_plane *plane; |
2296 | uint32_t __user *format_ptr; | |
8cf5c917 JB |
2297 | |
2298 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
2299 | return -EINVAL; | |
2300 | ||
a2b34e22 | 2301 | plane = drm_plane_find(dev, plane_resp->plane_id); |
fcf93f69 DV |
2302 | if (!plane) |
2303 | return -ENOENT; | |
8cf5c917 | 2304 | |
fcf93f69 | 2305 | drm_modeset_lock(&plane->mutex, NULL); |
8cf5c917 JB |
2306 | if (plane->crtc) |
2307 | plane_resp->crtc_id = plane->crtc->base.id; | |
2308 | else | |
2309 | plane_resp->crtc_id = 0; | |
2310 | ||
2311 | if (plane->fb) | |
2312 | plane_resp->fb_id = plane->fb->base.id; | |
2313 | else | |
2314 | plane_resp->fb_id = 0; | |
fcf93f69 | 2315 | drm_modeset_unlock(&plane->mutex); |
8cf5c917 JB |
2316 | |
2317 | plane_resp->plane_id = plane->base.id; | |
2318 | plane_resp->possible_crtcs = plane->possible_crtcs; | |
778ad903 | 2319 | plane_resp->gamma_size = 0; |
8cf5c917 JB |
2320 | |
2321 | /* | |
2322 | * This ioctl is called twice, once to determine how much space is | |
2323 | * needed, and the 2nd time to fill it. | |
2324 | */ | |
2325 | if (plane->format_count && | |
2326 | (plane_resp->count_format_types >= plane->format_count)) { | |
81f6c7f8 | 2327 | format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr; |
8cf5c917 JB |
2328 | if (copy_to_user(format_ptr, |
2329 | plane->format_types, | |
2330 | sizeof(uint32_t) * plane->format_count)) { | |
fcf93f69 | 2331 | return -EFAULT; |
8cf5c917 JB |
2332 | } |
2333 | } | |
2334 | plane_resp->count_format_types = plane->format_count; | |
2335 | ||
baf698b0 | 2336 | return 0; |
8cf5c917 JB |
2337 | } |
2338 | ||
b36552b3 MR |
2339 | /* |
2340 | * setplane_internal - setplane handler for internal callers | |
8cf5c917 | 2341 | * |
b36552b3 MR |
2342 | * Note that we assume an extra reference has already been taken on fb. If the |
2343 | * update fails, this reference will be dropped before return; if it succeeds, | |
2344 | * the previous framebuffer (if any) will be unreferenced instead. | |
c8e32cc1 | 2345 | * |
b36552b3 | 2346 | * src_{x,y,w,h} are provided in 16.16 fixed point format |
8cf5c917 | 2347 | */ |
f2b50c11 DV |
2348 | static int __setplane_internal(struct drm_plane *plane, |
2349 | struct drm_crtc *crtc, | |
2350 | struct drm_framebuffer *fb, | |
2351 | int32_t crtc_x, int32_t crtc_y, | |
2352 | uint32_t crtc_w, uint32_t crtc_h, | |
2353 | /* src_{x,y,w,h} values are 16.16 fixed point */ | |
2354 | uint32_t src_x, uint32_t src_y, | |
2355 | uint32_t src_w, uint32_t src_h) | |
8cf5c917 | 2356 | { |
8cf5c917 | 2357 | int ret = 0; |
42ef8789 | 2358 | unsigned int fb_width, fb_height; |
2f763312 | 2359 | unsigned int i; |
8cf5c917 | 2360 | |
8cf5c917 | 2361 | /* No fb means shut it down */ |
b36552b3 | 2362 | if (!fb) { |
3d30a59b | 2363 | plane->old_fb = plane->fb; |
731cce48 DV |
2364 | ret = plane->funcs->disable_plane(plane); |
2365 | if (!ret) { | |
2366 | plane->crtc = NULL; | |
2367 | plane->fb = NULL; | |
2368 | } else { | |
3d30a59b | 2369 | plane->old_fb = NULL; |
731cce48 | 2370 | } |
8cf5c917 JB |
2371 | goto out; |
2372 | } | |
2373 | ||
7f994f3f MR |
2374 | /* Check whether this plane is usable on this CRTC */ |
2375 | if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) { | |
2376 | DRM_DEBUG_KMS("Invalid crtc for plane\n"); | |
2377 | ret = -EINVAL; | |
2378 | goto out; | |
2379 | } | |
2380 | ||
62443be6 VS |
2381 | /* Check whether this plane supports the fb pixel format. */ |
2382 | for (i = 0; i < plane->format_count; i++) | |
2383 | if (fb->pixel_format == plane->format_types[i]) | |
2384 | break; | |
2385 | if (i == plane->format_count) { | |
6ba6d03e VS |
2386 | DRM_DEBUG_KMS("Invalid pixel format %s\n", |
2387 | drm_get_format_name(fb->pixel_format)); | |
62443be6 VS |
2388 | ret = -EINVAL; |
2389 | goto out; | |
2390 | } | |
2391 | ||
42ef8789 VS |
2392 | fb_width = fb->width << 16; |
2393 | fb_height = fb->height << 16; | |
2394 | ||
2395 | /* Make sure source coordinates are inside the fb. */ | |
b36552b3 MR |
2396 | if (src_w > fb_width || |
2397 | src_x > fb_width - src_w || | |
2398 | src_h > fb_height || | |
2399 | src_y > fb_height - src_h) { | |
42ef8789 VS |
2400 | DRM_DEBUG_KMS("Invalid source coordinates " |
2401 | "%u.%06ux%u.%06u+%u.%06u+%u.%06u\n", | |
b36552b3 MR |
2402 | src_w >> 16, ((src_w & 0xffff) * 15625) >> 10, |
2403 | src_h >> 16, ((src_h & 0xffff) * 15625) >> 10, | |
2404 | src_x >> 16, ((src_x & 0xffff) * 15625) >> 10, | |
2405 | src_y >> 16, ((src_y & 0xffff) * 15625) >> 10); | |
42ef8789 VS |
2406 | ret = -ENOSPC; |
2407 | goto out; | |
2408 | } | |
2409 | ||
3d30a59b | 2410 | plane->old_fb = plane->fb; |
8cf5c917 | 2411 | ret = plane->funcs->update_plane(plane, crtc, fb, |
b36552b3 MR |
2412 | crtc_x, crtc_y, crtc_w, crtc_h, |
2413 | src_x, src_y, src_w, src_h); | |
8cf5c917 JB |
2414 | if (!ret) { |
2415 | plane->crtc = crtc; | |
2416 | plane->fb = fb; | |
35f8badc | 2417 | fb = NULL; |
0fe27f06 | 2418 | } else { |
3d30a59b | 2419 | plane->old_fb = NULL; |
8cf5c917 JB |
2420 | } |
2421 | ||
2422 | out: | |
6c2a7532 DV |
2423 | if (fb) |
2424 | drm_framebuffer_unreference(fb); | |
3d30a59b DV |
2425 | if (plane->old_fb) |
2426 | drm_framebuffer_unreference(plane->old_fb); | |
2427 | plane->old_fb = NULL; | |
8cf5c917 JB |
2428 | |
2429 | return ret; | |
f2b50c11 | 2430 | } |
b36552b3 | 2431 | |
f2b50c11 DV |
2432 | static int setplane_internal(struct drm_plane *plane, |
2433 | struct drm_crtc *crtc, | |
2434 | struct drm_framebuffer *fb, | |
2435 | int32_t crtc_x, int32_t crtc_y, | |
2436 | uint32_t crtc_w, uint32_t crtc_h, | |
2437 | /* src_{x,y,w,h} values are 16.16 fixed point */ | |
2438 | uint32_t src_x, uint32_t src_y, | |
2439 | uint32_t src_w, uint32_t src_h) | |
2440 | { | |
2441 | int ret; | |
2442 | ||
2443 | drm_modeset_lock_all(plane->dev); | |
2444 | ret = __setplane_internal(plane, crtc, fb, | |
2445 | crtc_x, crtc_y, crtc_w, crtc_h, | |
2446 | src_x, src_y, src_w, src_h); | |
2447 | drm_modeset_unlock_all(plane->dev); | |
2448 | ||
2449 | return ret; | |
b36552b3 MR |
2450 | } |
2451 | ||
2452 | /** | |
2453 | * drm_mode_setplane - configure a plane's configuration | |
2454 | * @dev: DRM device | |
2455 | * @data: ioctl data* | |
2456 | * @file_priv: DRM file info | |
2457 | * | |
2458 | * Set plane configuration, including placement, fb, scaling, and other factors. | |
2459 | * Or pass a NULL fb to disable (planes may be disabled without providing a | |
2460 | * valid crtc). | |
2461 | * | |
2462 | * Returns: | |
1a498633 | 2463 | * Zero on success, negative errno on failure. |
b36552b3 MR |
2464 | */ |
2465 | int drm_mode_setplane(struct drm_device *dev, void *data, | |
2466 | struct drm_file *file_priv) | |
2467 | { | |
2468 | struct drm_mode_set_plane *plane_req = data; | |
b36552b3 MR |
2469 | struct drm_plane *plane; |
2470 | struct drm_crtc *crtc = NULL; | |
2471 | struct drm_framebuffer *fb = NULL; | |
2472 | ||
2473 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
2474 | return -EINVAL; | |
2475 | ||
2476 | /* Give drivers some help against integer overflows */ | |
2477 | if (plane_req->crtc_w > INT_MAX || | |
2478 | plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w || | |
2479 | plane_req->crtc_h > INT_MAX || | |
2480 | plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) { | |
2481 | DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n", | |
2482 | plane_req->crtc_w, plane_req->crtc_h, | |
2483 | plane_req->crtc_x, plane_req->crtc_y); | |
2484 | return -ERANGE; | |
2485 | } | |
2486 | ||
2487 | /* | |
2488 | * First, find the plane, crtc, and fb objects. If not available, | |
2489 | * we don't bother to call the driver. | |
2490 | */ | |
933f622f RC |
2491 | plane = drm_plane_find(dev, plane_req->plane_id); |
2492 | if (!plane) { | |
b36552b3 MR |
2493 | DRM_DEBUG_KMS("Unknown plane ID %d\n", |
2494 | plane_req->plane_id); | |
2495 | return -ENOENT; | |
2496 | } | |
b36552b3 MR |
2497 | |
2498 | if (plane_req->fb_id) { | |
2499 | fb = drm_framebuffer_lookup(dev, plane_req->fb_id); | |
2500 | if (!fb) { | |
2501 | DRM_DEBUG_KMS("Unknown framebuffer ID %d\n", | |
2502 | plane_req->fb_id); | |
2503 | return -ENOENT; | |
2504 | } | |
2505 | ||
933f622f RC |
2506 | crtc = drm_crtc_find(dev, plane_req->crtc_id); |
2507 | if (!crtc) { | |
b36552b3 MR |
2508 | DRM_DEBUG_KMS("Unknown crtc ID %d\n", |
2509 | plane_req->crtc_id); | |
2510 | return -ENOENT; | |
2511 | } | |
b36552b3 MR |
2512 | } |
2513 | ||
161d0dc1 MR |
2514 | /* |
2515 | * setplane_internal will take care of deref'ing either the old or new | |
2516 | * framebuffer depending on success. | |
2517 | */ | |
17cfd91f | 2518 | return setplane_internal(plane, crtc, fb, |
b36552b3 MR |
2519 | plane_req->crtc_x, plane_req->crtc_y, |
2520 | plane_req->crtc_w, plane_req->crtc_h, | |
2521 | plane_req->src_x, plane_req->src_y, | |
2522 | plane_req->src_w, plane_req->src_h); | |
8cf5c917 JB |
2523 | } |
2524 | ||
2d13b679 DV |
2525 | /** |
2526 | * drm_mode_set_config_internal - helper to call ->set_config | |
2527 | * @set: modeset config to set | |
2528 | * | |
2529 | * This is a little helper to wrap internal calls to the ->set_config driver | |
2530 | * interface. The only thing it adds is correct refcounting dance. | |
c8e32cc1 DV |
2531 | * |
2532 | * Returns: | |
1a498633 | 2533 | * Zero on success, negative errno on failure. |
2d13b679 DV |
2534 | */ |
2535 | int drm_mode_set_config_internal(struct drm_mode_set *set) | |
2536 | { | |
2537 | struct drm_crtc *crtc = set->crtc; | |
5cef29aa DV |
2538 | struct drm_framebuffer *fb; |
2539 | struct drm_crtc *tmp; | |
b0d12325 DV |
2540 | int ret; |
2541 | ||
5cef29aa DV |
2542 | /* |
2543 | * NOTE: ->set_config can also disable other crtcs (if we steal all | |
2544 | * connectors from it), hence we need to refcount the fbs across all | |
2545 | * crtcs. Atomic modeset will have saner semantics ... | |
2546 | */ | |
2547 | list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) | |
3d30a59b | 2548 | tmp->primary->old_fb = tmp->primary->fb; |
5cef29aa | 2549 | |
b0d12325 | 2550 | fb = set->fb; |
2d13b679 | 2551 | |
b0d12325 DV |
2552 | ret = crtc->funcs->set_config(set); |
2553 | if (ret == 0) { | |
e13161af | 2554 | crtc->primary->crtc = crtc; |
0fe27f06 | 2555 | crtc->primary->fb = fb; |
5cef29aa | 2556 | } |
cc85e121 | 2557 | |
5cef29aa | 2558 | list_for_each_entry(tmp, &crtc->dev->mode_config.crtc_list, head) { |
f4510a27 MR |
2559 | if (tmp->primary->fb) |
2560 | drm_framebuffer_reference(tmp->primary->fb); | |
3d30a59b DV |
2561 | if (tmp->primary->old_fb) |
2562 | drm_framebuffer_unreference(tmp->primary->old_fb); | |
2563 | tmp->primary->old_fb = NULL; | |
b0d12325 DV |
2564 | } |
2565 | ||
2566 | return ret; | |
2d13b679 DV |
2567 | } |
2568 | EXPORT_SYMBOL(drm_mode_set_config_internal); | |
2569 | ||
af93629d MR |
2570 | /** |
2571 | * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the | |
2572 | * CRTC viewport | |
2573 | * @crtc: CRTC that framebuffer will be displayed on | |
2574 | * @x: x panning | |
2575 | * @y: y panning | |
2576 | * @mode: mode that framebuffer will be displayed under | |
2577 | * @fb: framebuffer to check size of | |
c11e9283 | 2578 | */ |
af93629d MR |
2579 | int drm_crtc_check_viewport(const struct drm_crtc *crtc, |
2580 | int x, int y, | |
2581 | const struct drm_display_mode *mode, | |
2582 | const struct drm_framebuffer *fb) | |
c11e9283 DL |
2583 | |
2584 | { | |
2585 | int hdisplay, vdisplay; | |
2586 | ||
2587 | hdisplay = mode->hdisplay; | |
2588 | vdisplay = mode->vdisplay; | |
2589 | ||
a0c1bbb0 DL |
2590 | if (drm_mode_is_stereo(mode)) { |
2591 | struct drm_display_mode adjusted = *mode; | |
2592 | ||
2593 | drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE); | |
2594 | hdisplay = adjusted.crtc_hdisplay; | |
2595 | vdisplay = adjusted.crtc_vdisplay; | |
2596 | } | |
2597 | ||
c11e9283 DL |
2598 | if (crtc->invert_dimensions) |
2599 | swap(hdisplay, vdisplay); | |
2600 | ||
2601 | if (hdisplay > fb->width || | |
2602 | vdisplay > fb->height || | |
2603 | x > fb->width - hdisplay || | |
2604 | y > fb->height - vdisplay) { | |
2605 | DRM_DEBUG_KMS("Invalid fb size %ux%u for CRTC viewport %ux%u+%d+%d%s.\n", | |
2606 | fb->width, fb->height, hdisplay, vdisplay, x, y, | |
2607 | crtc->invert_dimensions ? " (inverted)" : ""); | |
2608 | return -ENOSPC; | |
2609 | } | |
2610 | ||
2611 | return 0; | |
2612 | } | |
af93629d | 2613 | EXPORT_SYMBOL(drm_crtc_check_viewport); |
c11e9283 | 2614 | |
f453ba04 DA |
2615 | /** |
2616 | * drm_mode_setcrtc - set CRTC configuration | |
065a50ed DV |
2617 | * @dev: drm device for the ioctl |
2618 | * @data: data pointer for the ioctl | |
2619 | * @file_priv: drm file for the ioctl call | |
f453ba04 | 2620 | * |
f453ba04 DA |
2621 | * Build a new CRTC configuration based on user request. |
2622 | * | |
2623 | * Called by the user via ioctl. | |
2624 | * | |
c8e32cc1 | 2625 | * Returns: |
1a498633 | 2626 | * Zero on success, negative errno on failure. |
f453ba04 DA |
2627 | */ |
2628 | int drm_mode_setcrtc(struct drm_device *dev, void *data, | |
2629 | struct drm_file *file_priv) | |
2630 | { | |
2631 | struct drm_mode_config *config = &dev->mode_config; | |
2632 | struct drm_mode_crtc *crtc_req = data; | |
6653cc8d | 2633 | struct drm_crtc *crtc; |
f453ba04 DA |
2634 | struct drm_connector **connector_set = NULL, *connector; |
2635 | struct drm_framebuffer *fb = NULL; | |
2636 | struct drm_display_mode *mode = NULL; | |
2637 | struct drm_mode_set set; | |
2638 | uint32_t __user *set_connectors_ptr; | |
4a1b0714 | 2639 | int ret; |
f453ba04 DA |
2640 | int i; |
2641 | ||
fb3b06c8 DA |
2642 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
2643 | return -EINVAL; | |
2644 | ||
1d97e915 VS |
2645 | /* For some reason crtc x/y offsets are signed internally. */ |
2646 | if (crtc_req->x > INT_MAX || crtc_req->y > INT_MAX) | |
2647 | return -ERANGE; | |
2648 | ||
84849903 | 2649 | drm_modeset_lock_all(dev); |
a2b34e22 RC |
2650 | crtc = drm_crtc_find(dev, crtc_req->crtc_id); |
2651 | if (!crtc) { | |
58367ed6 | 2652 | DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id); |
f27657f2 | 2653 | ret = -ENOENT; |
f453ba04 DA |
2654 | goto out; |
2655 | } | |
9440106b | 2656 | DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); |
f453ba04 DA |
2657 | |
2658 | if (crtc_req->mode_valid) { | |
2659 | /* If we have a mode we need a framebuffer. */ | |
2660 | /* If we pass -1, set the mode with the currently bound fb */ | |
2661 | if (crtc_req->fb_id == -1) { | |
f4510a27 | 2662 | if (!crtc->primary->fb) { |
6653cc8d VS |
2663 | DRM_DEBUG_KMS("CRTC doesn't have current FB\n"); |
2664 | ret = -EINVAL; | |
2665 | goto out; | |
f453ba04 | 2666 | } |
f4510a27 | 2667 | fb = crtc->primary->fb; |
b0d12325 DV |
2668 | /* Make refcounting symmetric with the lookup path. */ |
2669 | drm_framebuffer_reference(fb); | |
f453ba04 | 2670 | } else { |
786b99ed DV |
2671 | fb = drm_framebuffer_lookup(dev, crtc_req->fb_id); |
2672 | if (!fb) { | |
58367ed6 ZY |
2673 | DRM_DEBUG_KMS("Unknown FB ID%d\n", |
2674 | crtc_req->fb_id); | |
37c4e705 | 2675 | ret = -ENOENT; |
f453ba04 DA |
2676 | goto out; |
2677 | } | |
f453ba04 DA |
2678 | } |
2679 | ||
2680 | mode = drm_mode_create(dev); | |
ee34ab5b VS |
2681 | if (!mode) { |
2682 | ret = -ENOMEM; | |
2683 | goto out; | |
2684 | } | |
2685 | ||
90367bf6 VS |
2686 | ret = drm_crtc_convert_umode(mode, &crtc_req->mode); |
2687 | if (ret) { | |
2688 | DRM_DEBUG_KMS("Invalid mode\n"); | |
2689 | goto out; | |
2690 | } | |
2691 | ||
f453ba04 | 2692 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); |
5f61bb42 | 2693 | |
c11e9283 DL |
2694 | ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y, |
2695 | mode, fb); | |
2696 | if (ret) | |
5f61bb42 | 2697 | goto out; |
c11e9283 | 2698 | |
f453ba04 DA |
2699 | } |
2700 | ||
2701 | if (crtc_req->count_connectors == 0 && mode) { | |
58367ed6 | 2702 | DRM_DEBUG_KMS("Count connectors is 0 but mode set\n"); |
f453ba04 DA |
2703 | ret = -EINVAL; |
2704 | goto out; | |
2705 | } | |
2706 | ||
7781de74 | 2707 | if (crtc_req->count_connectors > 0 && (!mode || !fb)) { |
58367ed6 | 2708 | DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n", |
f453ba04 DA |
2709 | crtc_req->count_connectors); |
2710 | ret = -EINVAL; | |
2711 | goto out; | |
2712 | } | |
2713 | ||
2714 | if (crtc_req->count_connectors > 0) { | |
2715 | u32 out_id; | |
2716 | ||
2717 | /* Avoid unbounded kernel memory allocation */ | |
2718 | if (crtc_req->count_connectors > config->num_connector) { | |
2719 | ret = -EINVAL; | |
2720 | goto out; | |
2721 | } | |
2722 | ||
2723 | connector_set = kmalloc(crtc_req->count_connectors * | |
2724 | sizeof(struct drm_connector *), | |
2725 | GFP_KERNEL); | |
2726 | if (!connector_set) { | |
2727 | ret = -ENOMEM; | |
2728 | goto out; | |
2729 | } | |
2730 | ||
2731 | for (i = 0; i < crtc_req->count_connectors; i++) { | |
81f6c7f8 | 2732 | set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr; |
f453ba04 DA |
2733 | if (get_user(out_id, &set_connectors_ptr[i])) { |
2734 | ret = -EFAULT; | |
2735 | goto out; | |
2736 | } | |
2737 | ||
a2b34e22 RC |
2738 | connector = drm_connector_find(dev, out_id); |
2739 | if (!connector) { | |
58367ed6 ZY |
2740 | DRM_DEBUG_KMS("Connector id %d unknown\n", |
2741 | out_id); | |
f27657f2 | 2742 | ret = -ENOENT; |
f453ba04 DA |
2743 | goto out; |
2744 | } | |
9440106b JG |
2745 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", |
2746 | connector->base.id, | |
25933820 | 2747 | connector->name); |
f453ba04 DA |
2748 | |
2749 | connector_set[i] = connector; | |
2750 | } | |
2751 | } | |
2752 | ||
2753 | set.crtc = crtc; | |
2754 | set.x = crtc_req->x; | |
2755 | set.y = crtc_req->y; | |
2756 | set.mode = mode; | |
2757 | set.connectors = connector_set; | |
2758 | set.num_connectors = crtc_req->count_connectors; | |
5ef5f72f | 2759 | set.fb = fb; |
2d13b679 | 2760 | ret = drm_mode_set_config_internal(&set); |
f453ba04 DA |
2761 | |
2762 | out: | |
b0d12325 DV |
2763 | if (fb) |
2764 | drm_framebuffer_unreference(fb); | |
2765 | ||
f453ba04 | 2766 | kfree(connector_set); |
ee34ab5b | 2767 | drm_mode_destroy(dev, mode); |
84849903 | 2768 | drm_modeset_unlock_all(dev); |
f453ba04 DA |
2769 | return ret; |
2770 | } | |
2771 | ||
161d0dc1 MR |
2772 | /** |
2773 | * drm_mode_cursor_universal - translate legacy cursor ioctl call into a | |
2774 | * universal plane handler call | |
2775 | * @crtc: crtc to update cursor for | |
2776 | * @req: data pointer for the ioctl | |
2777 | * @file_priv: drm file for the ioctl call | |
2778 | * | |
2779 | * Legacy cursor ioctl's work directly with driver buffer handles. To | |
2780 | * translate legacy ioctl calls into universal plane handler calls, we need to | |
2781 | * wrap the native buffer handle in a drm_framebuffer. | |
2782 | * | |
2783 | * Note that we assume any handle passed to the legacy ioctls was a 32-bit ARGB | |
2784 | * buffer with a pitch of 4*width; the universal plane interface should be used | |
2785 | * directly in cases where the hardware can support other buffer settings and | |
2786 | * userspace wants to make use of these capabilities. | |
2787 | * | |
2788 | * Returns: | |
1a498633 | 2789 | * Zero on success, negative errno on failure. |
161d0dc1 MR |
2790 | */ |
2791 | static int drm_mode_cursor_universal(struct drm_crtc *crtc, | |
2792 | struct drm_mode_cursor2 *req, | |
2793 | struct drm_file *file_priv) | |
2794 | { | |
2795 | struct drm_device *dev = crtc->dev; | |
2796 | struct drm_framebuffer *fb = NULL; | |
2797 | struct drm_mode_fb_cmd2 fbreq = { | |
2798 | .width = req->width, | |
2799 | .height = req->height, | |
2800 | .pixel_format = DRM_FORMAT_ARGB8888, | |
2801 | .pitches = { req->width * 4 }, | |
2802 | .handles = { req->handle }, | |
2803 | }; | |
2804 | int32_t crtc_x, crtc_y; | |
2805 | uint32_t crtc_w = 0, crtc_h = 0; | |
2806 | uint32_t src_w = 0, src_h = 0; | |
2807 | int ret = 0; | |
2808 | ||
2809 | BUG_ON(!crtc->cursor); | |
f2b50c11 | 2810 | WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL); |
161d0dc1 MR |
2811 | |
2812 | /* | |
2813 | * Obtain fb we'll be using (either new or existing) and take an extra | |
2814 | * reference to it if fb != null. setplane will take care of dropping | |
2815 | * the reference if the plane update fails. | |
2816 | */ | |
2817 | if (req->flags & DRM_MODE_CURSOR_BO) { | |
2818 | if (req->handle) { | |
2819 | fb = add_framebuffer_internal(dev, &fbreq, file_priv); | |
2820 | if (IS_ERR(fb)) { | |
2821 | DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n"); | |
2822 | return PTR_ERR(fb); | |
2823 | } | |
2824 | ||
2825 | drm_framebuffer_reference(fb); | |
2826 | } else { | |
2827 | fb = NULL; | |
2828 | } | |
2829 | } else { | |
161d0dc1 MR |
2830 | fb = crtc->cursor->fb; |
2831 | if (fb) | |
2832 | drm_framebuffer_reference(fb); | |
161d0dc1 MR |
2833 | } |
2834 | ||
2835 | if (req->flags & DRM_MODE_CURSOR_MOVE) { | |
2836 | crtc_x = req->x; | |
2837 | crtc_y = req->y; | |
2838 | } else { | |
2839 | crtc_x = crtc->cursor_x; | |
2840 | crtc_y = crtc->cursor_y; | |
2841 | } | |
2842 | ||
2843 | if (fb) { | |
2844 | crtc_w = fb->width; | |
2845 | crtc_h = fb->height; | |
2846 | src_w = fb->width << 16; | |
2847 | src_h = fb->height << 16; | |
2848 | } | |
2849 | ||
2850 | /* | |
2851 | * setplane_internal will take care of deref'ing either the old or new | |
2852 | * framebuffer depending on success. | |
2853 | */ | |
f2b50c11 | 2854 | ret = __setplane_internal(crtc->cursor, crtc, fb, |
161d0dc1 MR |
2855 | crtc_x, crtc_y, crtc_w, crtc_h, |
2856 | 0, 0, src_w, src_h); | |
2857 | ||
2858 | /* Update successful; save new cursor position, if necessary */ | |
2859 | if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) { | |
2860 | crtc->cursor_x = req->x; | |
2861 | crtc->cursor_y = req->y; | |
2862 | } | |
2863 | ||
2864 | return ret; | |
2865 | } | |
2866 | ||
4c813d4d DA |
2867 | static int drm_mode_cursor_common(struct drm_device *dev, |
2868 | struct drm_mode_cursor2 *req, | |
2869 | struct drm_file *file_priv) | |
f453ba04 | 2870 | { |
f453ba04 DA |
2871 | struct drm_crtc *crtc; |
2872 | int ret = 0; | |
2873 | ||
fb3b06c8 DA |
2874 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
2875 | return -EINVAL; | |
2876 | ||
7c4eaca4 | 2877 | if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags)) |
f453ba04 | 2878 | return -EINVAL; |
f453ba04 | 2879 | |
a2b34e22 RC |
2880 | crtc = drm_crtc_find(dev, req->crtc_id); |
2881 | if (!crtc) { | |
58367ed6 | 2882 | DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id); |
f27657f2 | 2883 | return -ENOENT; |
f453ba04 | 2884 | } |
f453ba04 | 2885 | |
161d0dc1 MR |
2886 | /* |
2887 | * If this crtc has a universal cursor plane, call that plane's update | |
2888 | * handler rather than using legacy cursor handlers. | |
2889 | */ | |
4d02e2de | 2890 | drm_modeset_lock_crtc(crtc, crtc->cursor); |
f2b50c11 DV |
2891 | if (crtc->cursor) { |
2892 | ret = drm_mode_cursor_universal(crtc, req, file_priv); | |
2893 | goto out; | |
2894 | } | |
2895 | ||
f453ba04 | 2896 | if (req->flags & DRM_MODE_CURSOR_BO) { |
4c813d4d | 2897 | if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) { |
f453ba04 DA |
2898 | ret = -ENXIO; |
2899 | goto out; | |
2900 | } | |
2901 | /* Turns off the cursor if handle is 0 */ | |
4c813d4d DA |
2902 | if (crtc->funcs->cursor_set2) |
2903 | ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle, | |
2904 | req->width, req->height, req->hot_x, req->hot_y); | |
2905 | else | |
2906 | ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle, | |
2907 | req->width, req->height); | |
f453ba04 DA |
2908 | } |
2909 | ||
2910 | if (req->flags & DRM_MODE_CURSOR_MOVE) { | |
2911 | if (crtc->funcs->cursor_move) { | |
2912 | ret = crtc->funcs->cursor_move(crtc, req->x, req->y); | |
2913 | } else { | |
f453ba04 DA |
2914 | ret = -EFAULT; |
2915 | goto out; | |
2916 | } | |
2917 | } | |
2918 | out: | |
d059f652 | 2919 | drm_modeset_unlock_crtc(crtc); |
dac35663 | 2920 | |
f453ba04 | 2921 | return ret; |
4c813d4d DA |
2922 | |
2923 | } | |
c8e32cc1 DV |
2924 | |
2925 | ||
2926 | /** | |
2927 | * drm_mode_cursor_ioctl - set CRTC's cursor configuration | |
2928 | * @dev: drm device for the ioctl | |
2929 | * @data: data pointer for the ioctl | |
2930 | * @file_priv: drm file for the ioctl call | |
2931 | * | |
2932 | * Set the cursor configuration based on user request. | |
2933 | * | |
2934 | * Called by the user via ioctl. | |
2935 | * | |
2936 | * Returns: | |
1a498633 | 2937 | * Zero on success, negative errno on failure. |
c8e32cc1 | 2938 | */ |
4c813d4d | 2939 | int drm_mode_cursor_ioctl(struct drm_device *dev, |
c8e32cc1 | 2940 | void *data, struct drm_file *file_priv) |
4c813d4d DA |
2941 | { |
2942 | struct drm_mode_cursor *req = data; | |
2943 | struct drm_mode_cursor2 new_req; | |
2944 | ||
2945 | memcpy(&new_req, req, sizeof(struct drm_mode_cursor)); | |
2946 | new_req.hot_x = new_req.hot_y = 0; | |
2947 | ||
2948 | return drm_mode_cursor_common(dev, &new_req, file_priv); | |
2949 | } | |
2950 | ||
c8e32cc1 DV |
2951 | /** |
2952 | * drm_mode_cursor2_ioctl - set CRTC's cursor configuration | |
2953 | * @dev: drm device for the ioctl | |
2954 | * @data: data pointer for the ioctl | |
2955 | * @file_priv: drm file for the ioctl call | |
2956 | * | |
2957 | * Set the cursor configuration based on user request. This implements the 2nd | |
2958 | * version of the cursor ioctl, which allows userspace to additionally specify | |
2959 | * the hotspot of the pointer. | |
2960 | * | |
2961 | * Called by the user via ioctl. | |
2962 | * | |
2963 | * Returns: | |
1a498633 | 2964 | * Zero on success, negative errno on failure. |
c8e32cc1 | 2965 | */ |
4c813d4d DA |
2966 | int drm_mode_cursor2_ioctl(struct drm_device *dev, |
2967 | void *data, struct drm_file *file_priv) | |
2968 | { | |
2969 | struct drm_mode_cursor2 *req = data; | |
2970 | return drm_mode_cursor_common(dev, req, file_priv); | |
f453ba04 DA |
2971 | } |
2972 | ||
c8e32cc1 DV |
2973 | /** |
2974 | * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description | |
2975 | * @bpp: bits per pixels | |
2976 | * @depth: bit depth per pixel | |
2977 | * | |
2978 | * Computes a drm fourcc pixel format code for the given @bpp/@depth values. | |
2979 | * Useful in fbdev emulation code, since that deals in those values. | |
2980 | */ | |
308e5bcb JB |
2981 | uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth) |
2982 | { | |
2983 | uint32_t fmt; | |
2984 | ||
2985 | switch (bpp) { | |
2986 | case 8: | |
d84f031b | 2987 | fmt = DRM_FORMAT_C8; |
308e5bcb JB |
2988 | break; |
2989 | case 16: | |
2990 | if (depth == 15) | |
04b3924d | 2991 | fmt = DRM_FORMAT_XRGB1555; |
308e5bcb | 2992 | else |
04b3924d | 2993 | fmt = DRM_FORMAT_RGB565; |
308e5bcb JB |
2994 | break; |
2995 | case 24: | |
04b3924d | 2996 | fmt = DRM_FORMAT_RGB888; |
308e5bcb JB |
2997 | break; |
2998 | case 32: | |
2999 | if (depth == 24) | |
04b3924d | 3000 | fmt = DRM_FORMAT_XRGB8888; |
308e5bcb | 3001 | else if (depth == 30) |
04b3924d | 3002 | fmt = DRM_FORMAT_XRGB2101010; |
308e5bcb | 3003 | else |
04b3924d | 3004 | fmt = DRM_FORMAT_ARGB8888; |
308e5bcb JB |
3005 | break; |
3006 | default: | |
04b3924d VS |
3007 | DRM_ERROR("bad bpp, assuming x8r8g8b8 pixel format\n"); |
3008 | fmt = DRM_FORMAT_XRGB8888; | |
308e5bcb JB |
3009 | break; |
3010 | } | |
3011 | ||
3012 | return fmt; | |
3013 | } | |
3014 | EXPORT_SYMBOL(drm_mode_legacy_fb_format); | |
3015 | ||
f453ba04 DA |
3016 | /** |
3017 | * drm_mode_addfb - add an FB to the graphics configuration | |
065a50ed DV |
3018 | * @dev: drm device for the ioctl |
3019 | * @data: data pointer for the ioctl | |
3020 | * @file_priv: drm file for the ioctl call | |
f453ba04 | 3021 | * |
c8e32cc1 | 3022 | * Add a new FB to the specified CRTC, given a user request. This is the |
209f5527 | 3023 | * original addfb ioctl which only supported RGB formats. |
f453ba04 DA |
3024 | * |
3025 | * Called by the user via ioctl. | |
3026 | * | |
c8e32cc1 | 3027 | * Returns: |
1a498633 | 3028 | * Zero on success, negative errno on failure. |
f453ba04 DA |
3029 | */ |
3030 | int drm_mode_addfb(struct drm_device *dev, | |
3031 | void *data, struct drm_file *file_priv) | |
3032 | { | |
308e5bcb JB |
3033 | struct drm_mode_fb_cmd *or = data; |
3034 | struct drm_mode_fb_cmd2 r = {}; | |
228f2cb3 | 3035 | int ret; |
308e5bcb | 3036 | |
228f2cb3 | 3037 | /* convert to new format and call new ioctl */ |
308e5bcb JB |
3038 | r.fb_id = or->fb_id; |
3039 | r.width = or->width; | |
3040 | r.height = or->height; | |
3041 | r.pitches[0] = or->pitch; | |
3042 | r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth); | |
3043 | r.handles[0] = or->handle; | |
3044 | ||
228f2cb3 CE |
3045 | ret = drm_mode_addfb2(dev, &r, file_priv); |
3046 | if (ret) | |
3047 | return ret; | |
308e5bcb | 3048 | |
228f2cb3 | 3049 | or->fb_id = r.fb_id; |
4b096ac1 | 3050 | |
baf698b0 | 3051 | return 0; |
308e5bcb JB |
3052 | } |
3053 | ||
cff91b62 | 3054 | static int format_check(const struct drm_mode_fb_cmd2 *r) |
935b5977 VS |
3055 | { |
3056 | uint32_t format = r->pixel_format & ~DRM_FORMAT_BIG_ENDIAN; | |
3057 | ||
3058 | switch (format) { | |
3059 | case DRM_FORMAT_C8: | |
3060 | case DRM_FORMAT_RGB332: | |
3061 | case DRM_FORMAT_BGR233: | |
3062 | case DRM_FORMAT_XRGB4444: | |
3063 | case DRM_FORMAT_XBGR4444: | |
3064 | case DRM_FORMAT_RGBX4444: | |
3065 | case DRM_FORMAT_BGRX4444: | |
3066 | case DRM_FORMAT_ARGB4444: | |
3067 | case DRM_FORMAT_ABGR4444: | |
3068 | case DRM_FORMAT_RGBA4444: | |
3069 | case DRM_FORMAT_BGRA4444: | |
3070 | case DRM_FORMAT_XRGB1555: | |
3071 | case DRM_FORMAT_XBGR1555: | |
3072 | case DRM_FORMAT_RGBX5551: | |
3073 | case DRM_FORMAT_BGRX5551: | |
3074 | case DRM_FORMAT_ARGB1555: | |
3075 | case DRM_FORMAT_ABGR1555: | |
3076 | case DRM_FORMAT_RGBA5551: | |
3077 | case DRM_FORMAT_BGRA5551: | |
3078 | case DRM_FORMAT_RGB565: | |
3079 | case DRM_FORMAT_BGR565: | |
3080 | case DRM_FORMAT_RGB888: | |
3081 | case DRM_FORMAT_BGR888: | |
3082 | case DRM_FORMAT_XRGB8888: | |
3083 | case DRM_FORMAT_XBGR8888: | |
3084 | case DRM_FORMAT_RGBX8888: | |
3085 | case DRM_FORMAT_BGRX8888: | |
3086 | case DRM_FORMAT_ARGB8888: | |
3087 | case DRM_FORMAT_ABGR8888: | |
3088 | case DRM_FORMAT_RGBA8888: | |
3089 | case DRM_FORMAT_BGRA8888: | |
3090 | case DRM_FORMAT_XRGB2101010: | |
3091 | case DRM_FORMAT_XBGR2101010: | |
3092 | case DRM_FORMAT_RGBX1010102: | |
3093 | case DRM_FORMAT_BGRX1010102: | |
3094 | case DRM_FORMAT_ARGB2101010: | |
3095 | case DRM_FORMAT_ABGR2101010: | |
3096 | case DRM_FORMAT_RGBA1010102: | |
3097 | case DRM_FORMAT_BGRA1010102: | |
3098 | case DRM_FORMAT_YUYV: | |
3099 | case DRM_FORMAT_YVYU: | |
3100 | case DRM_FORMAT_UYVY: | |
3101 | case DRM_FORMAT_VYUY: | |
3102 | case DRM_FORMAT_AYUV: | |
3103 | case DRM_FORMAT_NV12: | |
3104 | case DRM_FORMAT_NV21: | |
3105 | case DRM_FORMAT_NV16: | |
3106 | case DRM_FORMAT_NV61: | |
ba623f6a LP |
3107 | case DRM_FORMAT_NV24: |
3108 | case DRM_FORMAT_NV42: | |
935b5977 VS |
3109 | case DRM_FORMAT_YUV410: |
3110 | case DRM_FORMAT_YVU410: | |
3111 | case DRM_FORMAT_YUV411: | |
3112 | case DRM_FORMAT_YVU411: | |
3113 | case DRM_FORMAT_YUV420: | |
3114 | case DRM_FORMAT_YVU420: | |
3115 | case DRM_FORMAT_YUV422: | |
3116 | case DRM_FORMAT_YVU422: | |
3117 | case DRM_FORMAT_YUV444: | |
3118 | case DRM_FORMAT_YVU444: | |
3119 | return 0; | |
3120 | default: | |
23c453a4 VS |
3121 | DRM_DEBUG_KMS("invalid pixel format %s\n", |
3122 | drm_get_format_name(r->pixel_format)); | |
935b5977 VS |
3123 | return -EINVAL; |
3124 | } | |
3125 | } | |
3126 | ||
cff91b62 | 3127 | static int framebuffer_check(const struct drm_mode_fb_cmd2 *r) |
d1b45d5f VS |
3128 | { |
3129 | int ret, hsub, vsub, num_planes, i; | |
3130 | ||
3131 | ret = format_check(r); | |
3132 | if (ret) { | |
6ba6d03e VS |
3133 | DRM_DEBUG_KMS("bad framebuffer format %s\n", |
3134 | drm_get_format_name(r->pixel_format)); | |
d1b45d5f VS |
3135 | return ret; |
3136 | } | |
3137 | ||
3138 | hsub = drm_format_horz_chroma_subsampling(r->pixel_format); | |
3139 | vsub = drm_format_vert_chroma_subsampling(r->pixel_format); | |
3140 | num_planes = drm_format_num_planes(r->pixel_format); | |
3141 | ||
3142 | if (r->width == 0 || r->width % hsub) { | |
209f5527 | 3143 | DRM_DEBUG_KMS("bad framebuffer width %u\n", r->width); |
d1b45d5f VS |
3144 | return -EINVAL; |
3145 | } | |
3146 | ||
3147 | if (r->height == 0 || r->height % vsub) { | |
1aa1b11c | 3148 | DRM_DEBUG_KMS("bad framebuffer height %u\n", r->height); |
d1b45d5f VS |
3149 | return -EINVAL; |
3150 | } | |
3151 | ||
3152 | for (i = 0; i < num_planes; i++) { | |
3153 | unsigned int width = r->width / (i != 0 ? hsub : 1); | |
b180b5d1 VS |
3154 | unsigned int height = r->height / (i != 0 ? vsub : 1); |
3155 | unsigned int cpp = drm_format_plane_cpp(r->pixel_format, i); | |
d1b45d5f VS |
3156 | |
3157 | if (!r->handles[i]) { | |
1aa1b11c | 3158 | DRM_DEBUG_KMS("no buffer object handle for plane %d\n", i); |
d1b45d5f VS |
3159 | return -EINVAL; |
3160 | } | |
3161 | ||
b180b5d1 VS |
3162 | if ((uint64_t) width * cpp > UINT_MAX) |
3163 | return -ERANGE; | |
3164 | ||
3165 | if ((uint64_t) height * r->pitches[i] + r->offsets[i] > UINT_MAX) | |
3166 | return -ERANGE; | |
3167 | ||
3168 | if (r->pitches[i] < width * cpp) { | |
1aa1b11c | 3169 | DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i); |
d1b45d5f VS |
3170 | return -EINVAL; |
3171 | } | |
3172 | } | |
3173 | ||
3174 | return 0; | |
3175 | } | |
3176 | ||
c394c2b0 MR |
3177 | static struct drm_framebuffer *add_framebuffer_internal(struct drm_device *dev, |
3178 | struct drm_mode_fb_cmd2 *r, | |
3179 | struct drm_file *file_priv) | |
308e5bcb | 3180 | { |
f453ba04 DA |
3181 | struct drm_mode_config *config = &dev->mode_config; |
3182 | struct drm_framebuffer *fb; | |
4a1b0714 | 3183 | int ret; |
f453ba04 | 3184 | |
e3cc3520 VS |
3185 | if (r->flags & ~DRM_MODE_FB_INTERLACED) { |
3186 | DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags); | |
c394c2b0 | 3187 | return ERR_PTR(-EINVAL); |
e3cc3520 VS |
3188 | } |
3189 | ||
f453ba04 | 3190 | if ((config->min_width > r->width) || (r->width > config->max_width)) { |
1aa1b11c | 3191 | DRM_DEBUG_KMS("bad framebuffer width %d, should be >= %d && <= %d\n", |
8cf5c917 | 3192 | r->width, config->min_width, config->max_width); |
c394c2b0 | 3193 | return ERR_PTR(-EINVAL); |
f453ba04 DA |
3194 | } |
3195 | if ((config->min_height > r->height) || (r->height > config->max_height)) { | |
1aa1b11c | 3196 | DRM_DEBUG_KMS("bad framebuffer height %d, should be >= %d && <= %d\n", |
8cf5c917 | 3197 | r->height, config->min_height, config->max_height); |
c394c2b0 | 3198 | return ERR_PTR(-EINVAL); |
f453ba04 DA |
3199 | } |
3200 | ||
d1b45d5f VS |
3201 | ret = framebuffer_check(r); |
3202 | if (ret) | |
c394c2b0 | 3203 | return ERR_PTR(ret); |
935b5977 | 3204 | |
f453ba04 | 3205 | fb = dev->mode_config.funcs->fb_create(dev, file_priv, r); |
cce13ff7 | 3206 | if (IS_ERR(fb)) { |
1aa1b11c | 3207 | DRM_DEBUG_KMS("could not create framebuffer\n"); |
c394c2b0 | 3208 | return fb; |
f453ba04 DA |
3209 | } |
3210 | ||
4b096ac1 | 3211 | mutex_lock(&file_priv->fbs_lock); |
e0c8463a | 3212 | r->fb_id = fb->base.id; |
f453ba04 | 3213 | list_add(&fb->filp_head, &file_priv->fbs); |
9440106b | 3214 | DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id); |
4b096ac1 | 3215 | mutex_unlock(&file_priv->fbs_lock); |
f453ba04 | 3216 | |
c394c2b0 MR |
3217 | return fb; |
3218 | } | |
4b096ac1 | 3219 | |
c394c2b0 MR |
3220 | /** |
3221 | * drm_mode_addfb2 - add an FB to the graphics configuration | |
3222 | * @dev: drm device for the ioctl | |
3223 | * @data: data pointer for the ioctl | |
3224 | * @file_priv: drm file for the ioctl call | |
3225 | * | |
3226 | * Add a new FB to the specified CRTC, given a user request with format. This is | |
3227 | * the 2nd version of the addfb ioctl, which supports multi-planar framebuffers | |
3228 | * and uses fourcc codes as pixel format specifiers. | |
3229 | * | |
3230 | * Called by the user via ioctl. | |
3231 | * | |
3232 | * Returns: | |
1a498633 | 3233 | * Zero on success, negative errno on failure. |
c394c2b0 MR |
3234 | */ |
3235 | int drm_mode_addfb2(struct drm_device *dev, | |
3236 | void *data, struct drm_file *file_priv) | |
3237 | { | |
3238 | struct drm_framebuffer *fb; | |
3239 | ||
3240 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
3241 | return -EINVAL; | |
3242 | ||
3243 | fb = add_framebuffer_internal(dev, data, file_priv); | |
3244 | if (IS_ERR(fb)) | |
3245 | return PTR_ERR(fb); | |
3246 | ||
3247 | return 0; | |
f453ba04 DA |
3248 | } |
3249 | ||
3250 | /** | |
3251 | * drm_mode_rmfb - remove an FB from the configuration | |
065a50ed DV |
3252 | * @dev: drm device for the ioctl |
3253 | * @data: data pointer for the ioctl | |
3254 | * @file_priv: drm file for the ioctl call | |
f453ba04 | 3255 | * |
f453ba04 DA |
3256 | * Remove the FB specified by the user. |
3257 | * | |
3258 | * Called by the user via ioctl. | |
3259 | * | |
c8e32cc1 | 3260 | * Returns: |
1a498633 | 3261 | * Zero on success, negative errno on failure. |
f453ba04 DA |
3262 | */ |
3263 | int drm_mode_rmfb(struct drm_device *dev, | |
3264 | void *data, struct drm_file *file_priv) | |
3265 | { | |
f453ba04 DA |
3266 | struct drm_framebuffer *fb = NULL; |
3267 | struct drm_framebuffer *fbl = NULL; | |
3268 | uint32_t *id = data; | |
f453ba04 DA |
3269 | int found = 0; |
3270 | ||
fb3b06c8 DA |
3271 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
3272 | return -EINVAL; | |
3273 | ||
4b096ac1 | 3274 | mutex_lock(&file_priv->fbs_lock); |
2b677e8c DV |
3275 | mutex_lock(&dev->mode_config.fb_lock); |
3276 | fb = __drm_framebuffer_lookup(dev, *id); | |
3277 | if (!fb) | |
3278 | goto fail_lookup; | |
3279 | ||
f453ba04 DA |
3280 | list_for_each_entry(fbl, &file_priv->fbs, filp_head) |
3281 | if (fb == fbl) | |
3282 | found = 1; | |
2b677e8c DV |
3283 | if (!found) |
3284 | goto fail_lookup; | |
3285 | ||
3286 | /* Mark fb as reaped, we still have a ref from fpriv->fbs. */ | |
3287 | __drm_framebuffer_unregister(dev, fb); | |
f453ba04 | 3288 | |
4b096ac1 | 3289 | list_del_init(&fb->filp_head); |
2b677e8c | 3290 | mutex_unlock(&dev->mode_config.fb_lock); |
4b096ac1 | 3291 | mutex_unlock(&file_priv->fbs_lock); |
f453ba04 | 3292 | |
4b096ac1 | 3293 | drm_framebuffer_remove(fb); |
4b096ac1 | 3294 | |
2b677e8c DV |
3295 | return 0; |
3296 | ||
3297 | fail_lookup: | |
3298 | mutex_unlock(&dev->mode_config.fb_lock); | |
3299 | mutex_unlock(&file_priv->fbs_lock); | |
3300 | ||
37c4e705 | 3301 | return -ENOENT; |
f453ba04 DA |
3302 | } |
3303 | ||
3304 | /** | |
3305 | * drm_mode_getfb - get FB info | |
065a50ed DV |
3306 | * @dev: drm device for the ioctl |
3307 | * @data: data pointer for the ioctl | |
3308 | * @file_priv: drm file for the ioctl call | |
f453ba04 | 3309 | * |
f453ba04 DA |
3310 | * Lookup the FB given its ID and return info about it. |
3311 | * | |
3312 | * Called by the user via ioctl. | |
3313 | * | |
c8e32cc1 | 3314 | * Returns: |
1a498633 | 3315 | * Zero on success, negative errno on failure. |
f453ba04 DA |
3316 | */ |
3317 | int drm_mode_getfb(struct drm_device *dev, | |
3318 | void *data, struct drm_file *file_priv) | |
3319 | { | |
3320 | struct drm_mode_fb_cmd *r = data; | |
f453ba04 | 3321 | struct drm_framebuffer *fb; |
58c0dca1 | 3322 | int ret; |
f453ba04 | 3323 | |
fb3b06c8 DA |
3324 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
3325 | return -EINVAL; | |
3326 | ||
786b99ed | 3327 | fb = drm_framebuffer_lookup(dev, r->fb_id); |
58c0dca1 | 3328 | if (!fb) |
37c4e705 | 3329 | return -ENOENT; |
f453ba04 DA |
3330 | |
3331 | r->height = fb->height; | |
3332 | r->width = fb->width; | |
3333 | r->depth = fb->depth; | |
3334 | r->bpp = fb->bits_per_pixel; | |
01f2c773 | 3335 | r->pitch = fb->pitches[0]; |
101b96f3 | 3336 | if (fb->funcs->create_handle) { |
09f308f7 | 3337 | if (file_priv->is_master || capable(CAP_SYS_ADMIN) || |
43683057 | 3338 | drm_is_control_client(file_priv)) { |
101b96f3 DH |
3339 | ret = fb->funcs->create_handle(fb, file_priv, |
3340 | &r->handle); | |
3341 | } else { | |
3342 | /* GET_FB() is an unprivileged ioctl so we must not | |
3343 | * return a buffer-handle to non-master processes! For | |
3344 | * backwards-compatibility reasons, we cannot make | |
3345 | * GET_FB() privileged, so just return an invalid handle | |
3346 | * for non-masters. */ | |
3347 | r->handle = 0; | |
3348 | ret = 0; | |
3349 | } | |
3350 | } else { | |
af26ef3b | 3351 | ret = -ENODEV; |
101b96f3 | 3352 | } |
f453ba04 | 3353 | |
58c0dca1 DV |
3354 | drm_framebuffer_unreference(fb); |
3355 | ||
f453ba04 DA |
3356 | return ret; |
3357 | } | |
3358 | ||
c8e32cc1 DV |
3359 | /** |
3360 | * drm_mode_dirtyfb_ioctl - flush frontbuffer rendering on an FB | |
3361 | * @dev: drm device for the ioctl | |
3362 | * @data: data pointer for the ioctl | |
3363 | * @file_priv: drm file for the ioctl call | |
3364 | * | |
3365 | * Lookup the FB and flush out the damaged area supplied by userspace as a clip | |
3366 | * rectangle list. Generic userspace which does frontbuffer rendering must call | |
3367 | * this ioctl to flush out the changes on manual-update display outputs, e.g. | |
3368 | * usb display-link, mipi manual update panels or edp panel self refresh modes. | |
3369 | * | |
3370 | * Modesetting drivers which always update the frontbuffer do not need to | |
3371 | * implement the corresponding ->dirty framebuffer callback. | |
3372 | * | |
3373 | * Called by the user via ioctl. | |
3374 | * | |
3375 | * Returns: | |
1a498633 | 3376 | * Zero on success, negative errno on failure. |
c8e32cc1 | 3377 | */ |
884840aa JB |
3378 | int drm_mode_dirtyfb_ioctl(struct drm_device *dev, |
3379 | void *data, struct drm_file *file_priv) | |
3380 | { | |
3381 | struct drm_clip_rect __user *clips_ptr; | |
3382 | struct drm_clip_rect *clips = NULL; | |
3383 | struct drm_mode_fb_dirty_cmd *r = data; | |
884840aa JB |
3384 | struct drm_framebuffer *fb; |
3385 | unsigned flags; | |
3386 | int num_clips; | |
4a1b0714 | 3387 | int ret; |
884840aa | 3388 | |
fb3b06c8 DA |
3389 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
3390 | return -EINVAL; | |
3391 | ||
786b99ed | 3392 | fb = drm_framebuffer_lookup(dev, r->fb_id); |
4ccf097f | 3393 | if (!fb) |
37c4e705 | 3394 | return -ENOENT; |
884840aa JB |
3395 | |
3396 | num_clips = r->num_clips; | |
81f6c7f8 | 3397 | clips_ptr = (struct drm_clip_rect __user *)(unsigned long)r->clips_ptr; |
884840aa JB |
3398 | |
3399 | if (!num_clips != !clips_ptr) { | |
3400 | ret = -EINVAL; | |
3401 | goto out_err1; | |
3402 | } | |
3403 | ||
3404 | flags = DRM_MODE_FB_DIRTY_FLAGS & r->flags; | |
3405 | ||
3406 | /* If userspace annotates copy, clips must come in pairs */ | |
3407 | if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && (num_clips % 2)) { | |
3408 | ret = -EINVAL; | |
3409 | goto out_err1; | |
3410 | } | |
3411 | ||
3412 | if (num_clips && clips_ptr) { | |
a5cd3351 XW |
3413 | if (num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS) { |
3414 | ret = -EINVAL; | |
3415 | goto out_err1; | |
3416 | } | |
884840aa JB |
3417 | clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL); |
3418 | if (!clips) { | |
3419 | ret = -ENOMEM; | |
3420 | goto out_err1; | |
3421 | } | |
3422 | ||
3423 | ret = copy_from_user(clips, clips_ptr, | |
3424 | num_clips * sizeof(*clips)); | |
e902a358 DC |
3425 | if (ret) { |
3426 | ret = -EFAULT; | |
884840aa | 3427 | goto out_err2; |
e902a358 | 3428 | } |
884840aa JB |
3429 | } |
3430 | ||
3431 | if (fb->funcs->dirty) { | |
02b00162 TH |
3432 | ret = fb->funcs->dirty(fb, file_priv, flags, r->color, |
3433 | clips, num_clips); | |
884840aa JB |
3434 | } else { |
3435 | ret = -ENOSYS; | |
884840aa JB |
3436 | } |
3437 | ||
3438 | out_err2: | |
3439 | kfree(clips); | |
3440 | out_err1: | |
4ccf097f DV |
3441 | drm_framebuffer_unreference(fb); |
3442 | ||
884840aa JB |
3443 | return ret; |
3444 | } | |
3445 | ||
3446 | ||
f453ba04 DA |
3447 | /** |
3448 | * drm_fb_release - remove and free the FBs on this file | |
065a50ed | 3449 | * @priv: drm file for the ioctl |
f453ba04 | 3450 | * |
f453ba04 DA |
3451 | * Destroy all the FBs associated with @filp. |
3452 | * | |
3453 | * Called by the user via ioctl. | |
3454 | * | |
c8e32cc1 | 3455 | * Returns: |
1a498633 | 3456 | * Zero on success, negative errno on failure. |
f453ba04 | 3457 | */ |
ea39f835 | 3458 | void drm_fb_release(struct drm_file *priv) |
f453ba04 | 3459 | { |
f453ba04 DA |
3460 | struct drm_device *dev = priv->minor->dev; |
3461 | struct drm_framebuffer *fb, *tfb; | |
3462 | ||
1b116297 DV |
3463 | /* |
3464 | * When the file gets released that means no one else can access the fb | |
e2db726b | 3465 | * list any more, so no need to grab fpriv->fbs_lock. And we need to |
1b116297 DV |
3466 | * avoid upsetting lockdep since the universal cursor code adds a |
3467 | * framebuffer while holding mutex locks. | |
3468 | * | |
3469 | * Note that a real deadlock between fpriv->fbs_lock and the modeset | |
3470 | * locks is impossible here since no one else but this function can get | |
3471 | * at it any more. | |
3472 | */ | |
f453ba04 | 3473 | list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) { |
2b677e8c DV |
3474 | |
3475 | mutex_lock(&dev->mode_config.fb_lock); | |
3476 | /* Mark fb as reaped, we still have a ref from fpriv->fbs. */ | |
3477 | __drm_framebuffer_unregister(dev, fb); | |
3478 | mutex_unlock(&dev->mode_config.fb_lock); | |
3479 | ||
4b096ac1 | 3480 | list_del_init(&fb->filp_head); |
2b677e8c DV |
3481 | |
3482 | /* This will also drop the fpriv->fbs reference. */ | |
f7eff60e | 3483 | drm_framebuffer_remove(fb); |
f453ba04 | 3484 | } |
f453ba04 DA |
3485 | } |
3486 | ||
c8e32cc1 DV |
3487 | /** |
3488 | * drm_property_create - create a new property type | |
3489 | * @dev: drm device | |
3490 | * @flags: flags specifying the property type | |
3491 | * @name: name of the property | |
3492 | * @num_values: number of pre-defined values | |
3493 | * | |
3494 | * This creates a new generic drm property which can then be attached to a drm | |
3495 | * object with drm_object_attach_property. The returned property object must be | |
3496 | * freed with drm_property_destroy. | |
3497 | * | |
3b5b9932 DL |
3498 | * Note that the DRM core keeps a per-device list of properties and that, if |
3499 | * drm_mode_config_cleanup() is called, it will destroy all properties created | |
3500 | * by the driver. | |
3501 | * | |
c8e32cc1 DV |
3502 | * Returns: |
3503 | * A pointer to the newly created property on success, NULL on failure. | |
3504 | */ | |
f453ba04 DA |
3505 | struct drm_property *drm_property_create(struct drm_device *dev, int flags, |
3506 | const char *name, int num_values) | |
3507 | { | |
3508 | struct drm_property *property = NULL; | |
6bfc56aa | 3509 | int ret; |
f453ba04 DA |
3510 | |
3511 | property = kzalloc(sizeof(struct drm_property), GFP_KERNEL); | |
3512 | if (!property) | |
3513 | return NULL; | |
3514 | ||
98f75de4 RC |
3515 | property->dev = dev; |
3516 | ||
f453ba04 DA |
3517 | if (num_values) { |
3518 | property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL); | |
3519 | if (!property->values) | |
3520 | goto fail; | |
3521 | } | |
3522 | ||
6bfc56aa VS |
3523 | ret = drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY); |
3524 | if (ret) | |
3525 | goto fail; | |
3526 | ||
f453ba04 DA |
3527 | property->flags = flags; |
3528 | property->num_values = num_values; | |
3758b341 | 3529 | INIT_LIST_HEAD(&property->enum_list); |
f453ba04 | 3530 | |
471dd2ef | 3531 | if (name) { |
f453ba04 | 3532 | strncpy(property->name, name, DRM_PROP_NAME_LEN); |
471dd2ef VL |
3533 | property->name[DRM_PROP_NAME_LEN-1] = '\0'; |
3534 | } | |
f453ba04 DA |
3535 | |
3536 | list_add_tail(&property->head, &dev->mode_config.property_list); | |
5ea22f24 RC |
3537 | |
3538 | WARN_ON(!drm_property_type_valid(property)); | |
3539 | ||
f453ba04 DA |
3540 | return property; |
3541 | fail: | |
6bfc56aa | 3542 | kfree(property->values); |
f453ba04 DA |
3543 | kfree(property); |
3544 | return NULL; | |
3545 | } | |
3546 | EXPORT_SYMBOL(drm_property_create); | |
3547 | ||
c8e32cc1 | 3548 | /** |
2aa9d2bc | 3549 | * drm_property_create_enum - create a new enumeration property type |
c8e32cc1 DV |
3550 | * @dev: drm device |
3551 | * @flags: flags specifying the property type | |
3552 | * @name: name of the property | |
3553 | * @props: enumeration lists with property values | |
3554 | * @num_values: number of pre-defined values | |
3555 | * | |
3556 | * This creates a new generic drm property which can then be attached to a drm | |
3557 | * object with drm_object_attach_property. The returned property object must be | |
3558 | * freed with drm_property_destroy. | |
3559 | * | |
3560 | * Userspace is only allowed to set one of the predefined values for enumeration | |
3561 | * properties. | |
3562 | * | |
3563 | * Returns: | |
3564 | * A pointer to the newly created property on success, NULL on failure. | |
3565 | */ | |
4a67d391 SH |
3566 | struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags, |
3567 | const char *name, | |
3568 | const struct drm_prop_enum_list *props, | |
3569 | int num_values) | |
3570 | { | |
3571 | struct drm_property *property; | |
3572 | int i, ret; | |
3573 | ||
3574 | flags |= DRM_MODE_PROP_ENUM; | |
3575 | ||
3576 | property = drm_property_create(dev, flags, name, num_values); | |
3577 | if (!property) | |
3578 | return NULL; | |
3579 | ||
3580 | for (i = 0; i < num_values; i++) { | |
3581 | ret = drm_property_add_enum(property, i, | |
3582 | props[i].type, | |
3583 | props[i].name); | |
3584 | if (ret) { | |
3585 | drm_property_destroy(dev, property); | |
3586 | return NULL; | |
3587 | } | |
3588 | } | |
3589 | ||
3590 | return property; | |
3591 | } | |
3592 | EXPORT_SYMBOL(drm_property_create_enum); | |
3593 | ||
c8e32cc1 | 3594 | /** |
2aa9d2bc | 3595 | * drm_property_create_bitmask - create a new bitmask property type |
c8e32cc1 DV |
3596 | * @dev: drm device |
3597 | * @flags: flags specifying the property type | |
3598 | * @name: name of the property | |
3599 | * @props: enumeration lists with property bitflags | |
295ee853 DV |
3600 | * @num_props: size of the @props array |
3601 | * @supported_bits: bitmask of all supported enumeration values | |
c8e32cc1 | 3602 | * |
295ee853 | 3603 | * This creates a new bitmask drm property which can then be attached to a drm |
c8e32cc1 DV |
3604 | * object with drm_object_attach_property. The returned property object must be |
3605 | * freed with drm_property_destroy. | |
3606 | * | |
3607 | * Compared to plain enumeration properties userspace is allowed to set any | |
3608 | * or'ed together combination of the predefined property bitflag values | |
3609 | * | |
3610 | * Returns: | |
3611 | * A pointer to the newly created property on success, NULL on failure. | |
3612 | */ | |
49e27545 RC |
3613 | struct drm_property *drm_property_create_bitmask(struct drm_device *dev, |
3614 | int flags, const char *name, | |
3615 | const struct drm_prop_enum_list *props, | |
7689ffb3 VS |
3616 | int num_props, |
3617 | uint64_t supported_bits) | |
49e27545 RC |
3618 | { |
3619 | struct drm_property *property; | |
7689ffb3 VS |
3620 | int i, ret, index = 0; |
3621 | int num_values = hweight64(supported_bits); | |
49e27545 RC |
3622 | |
3623 | flags |= DRM_MODE_PROP_BITMASK; | |
3624 | ||
3625 | property = drm_property_create(dev, flags, name, num_values); | |
3626 | if (!property) | |
3627 | return NULL; | |
7689ffb3 VS |
3628 | for (i = 0; i < num_props; i++) { |
3629 | if (!(supported_bits & (1ULL << props[i].type))) | |
3630 | continue; | |
49e27545 | 3631 | |
7689ffb3 VS |
3632 | if (WARN_ON(index >= num_values)) { |
3633 | drm_property_destroy(dev, property); | |
3634 | return NULL; | |
3635 | } | |
3636 | ||
3637 | ret = drm_property_add_enum(property, index++, | |
49e27545 RC |
3638 | props[i].type, |
3639 | props[i].name); | |
3640 | if (ret) { | |
3641 | drm_property_destroy(dev, property); | |
3642 | return NULL; | |
3643 | } | |
3644 | } | |
3645 | ||
3646 | return property; | |
3647 | } | |
3648 | EXPORT_SYMBOL(drm_property_create_bitmask); | |
3649 | ||
ebc44cf3 RC |
3650 | static struct drm_property *property_create_range(struct drm_device *dev, |
3651 | int flags, const char *name, | |
3652 | uint64_t min, uint64_t max) | |
3653 | { | |
3654 | struct drm_property *property; | |
3655 | ||
3656 | property = drm_property_create(dev, flags, name, 2); | |
3657 | if (!property) | |
3658 | return NULL; | |
3659 | ||
3660 | property->values[0] = min; | |
3661 | property->values[1] = max; | |
3662 | ||
3663 | return property; | |
3664 | } | |
3665 | ||
c8e32cc1 | 3666 | /** |
2aa9d2bc | 3667 | * drm_property_create_range - create a new ranged property type |
c8e32cc1 DV |
3668 | * @dev: drm device |
3669 | * @flags: flags specifying the property type | |
3670 | * @name: name of the property | |
3671 | * @min: minimum value of the property | |
3672 | * @max: maximum value of the property | |
3673 | * | |
3674 | * This creates a new generic drm property which can then be attached to a drm | |
3675 | * object with drm_object_attach_property. The returned property object must be | |
3676 | * freed with drm_property_destroy. | |
3677 | * | |
32197aab | 3678 | * Userspace is allowed to set any integer value in the (min, max) range |
c8e32cc1 DV |
3679 | * inclusive. |
3680 | * | |
3681 | * Returns: | |
3682 | * A pointer to the newly created property on success, NULL on failure. | |
3683 | */ | |
d9bc3c02 SH |
3684 | struct drm_property *drm_property_create_range(struct drm_device *dev, int flags, |
3685 | const char *name, | |
3686 | uint64_t min, uint64_t max) | |
3687 | { | |
ebc44cf3 RC |
3688 | return property_create_range(dev, DRM_MODE_PROP_RANGE | flags, |
3689 | name, min, max); | |
d9bc3c02 SH |
3690 | } |
3691 | EXPORT_SYMBOL(drm_property_create_range); | |
3692 | ||
ebc44cf3 RC |
3693 | struct drm_property *drm_property_create_signed_range(struct drm_device *dev, |
3694 | int flags, const char *name, | |
3695 | int64_t min, int64_t max) | |
3696 | { | |
3697 | return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags, | |
3698 | name, I642U64(min), I642U64(max)); | |
3699 | } | |
3700 | EXPORT_SYMBOL(drm_property_create_signed_range); | |
3701 | ||
98f75de4 RC |
3702 | struct drm_property *drm_property_create_object(struct drm_device *dev, |
3703 | int flags, const char *name, uint32_t type) | |
3704 | { | |
3705 | struct drm_property *property; | |
3706 | ||
3707 | flags |= DRM_MODE_PROP_OBJECT; | |
3708 | ||
3709 | property = drm_property_create(dev, flags, name, 1); | |
3710 | if (!property) | |
3711 | return NULL; | |
3712 | ||
3713 | property->values[0] = type; | |
3714 | ||
3715 | return property; | |
3716 | } | |
3717 | EXPORT_SYMBOL(drm_property_create_object); | |
3718 | ||
c8e32cc1 DV |
3719 | /** |
3720 | * drm_property_add_enum - add a possible value to an enumeration property | |
3721 | * @property: enumeration property to change | |
3722 | * @index: index of the new enumeration | |
3723 | * @value: value of the new enumeration | |
3724 | * @name: symbolic name of the new enumeration | |
3725 | * | |
3726 | * This functions adds enumerations to a property. | |
3727 | * | |
3728 | * It's use is deprecated, drivers should use one of the more specific helpers | |
3729 | * to directly create the property with all enumerations already attached. | |
3730 | * | |
3731 | * Returns: | |
3732 | * Zero on success, error code on failure. | |
3733 | */ | |
f453ba04 DA |
3734 | int drm_property_add_enum(struct drm_property *property, int index, |
3735 | uint64_t value, const char *name) | |
3736 | { | |
3737 | struct drm_property_enum *prop_enum; | |
3738 | ||
5ea22f24 RC |
3739 | if (!(drm_property_type_is(property, DRM_MODE_PROP_ENUM) || |
3740 | drm_property_type_is(property, DRM_MODE_PROP_BITMASK))) | |
49e27545 RC |
3741 | return -EINVAL; |
3742 | ||
3743 | /* | |
3744 | * Bitmask enum properties have the additional constraint of values | |
3745 | * from 0 to 63 | |
3746 | */ | |
5ea22f24 RC |
3747 | if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) && |
3748 | (value > 63)) | |
f453ba04 DA |
3749 | return -EINVAL; |
3750 | ||
3758b341 DV |
3751 | if (!list_empty(&property->enum_list)) { |
3752 | list_for_each_entry(prop_enum, &property->enum_list, head) { | |
f453ba04 DA |
3753 | if (prop_enum->value == value) { |
3754 | strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN); | |
3755 | prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0'; | |
3756 | return 0; | |
3757 | } | |
3758 | } | |
3759 | } | |
3760 | ||
3761 | prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL); | |
3762 | if (!prop_enum) | |
3763 | return -ENOMEM; | |
3764 | ||
3765 | strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN); | |
3766 | prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0'; | |
3767 | prop_enum->value = value; | |
3768 | ||
3769 | property->values[index] = value; | |
3758b341 | 3770 | list_add_tail(&prop_enum->head, &property->enum_list); |
f453ba04 DA |
3771 | return 0; |
3772 | } | |
3773 | EXPORT_SYMBOL(drm_property_add_enum); | |
3774 | ||
c8e32cc1 DV |
3775 | /** |
3776 | * drm_property_destroy - destroy a drm property | |
3777 | * @dev: drm device | |
3778 | * @property: property to destry | |
3779 | * | |
3780 | * This function frees a property including any attached resources like | |
3781 | * enumeration values. | |
3782 | */ | |
f453ba04 DA |
3783 | void drm_property_destroy(struct drm_device *dev, struct drm_property *property) |
3784 | { | |
3785 | struct drm_property_enum *prop_enum, *pt; | |
3786 | ||
3758b341 | 3787 | list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) { |
f453ba04 DA |
3788 | list_del(&prop_enum->head); |
3789 | kfree(prop_enum); | |
3790 | } | |
3791 | ||
3792 | if (property->num_values) | |
3793 | kfree(property->values); | |
3794 | drm_mode_object_put(dev, &property->base); | |
3795 | list_del(&property->head); | |
3796 | kfree(property); | |
3797 | } | |
3798 | EXPORT_SYMBOL(drm_property_destroy); | |
3799 | ||
c8e32cc1 DV |
3800 | /** |
3801 | * drm_object_attach_property - attach a property to a modeset object | |
3802 | * @obj: drm modeset object | |
3803 | * @property: property to attach | |
3804 | * @init_val: initial value of the property | |
3805 | * | |
3806 | * This attaches the given property to the modeset object with the given initial | |
3807 | * value. Currently this function cannot fail since the properties are stored in | |
3808 | * a statically sized array. | |
3809 | */ | |
c543188a PZ |
3810 | void drm_object_attach_property(struct drm_mode_object *obj, |
3811 | struct drm_property *property, | |
3812 | uint64_t init_val) | |
3813 | { | |
7f88a9be | 3814 | int count = obj->properties->count; |
c543188a | 3815 | |
7f88a9be PZ |
3816 | if (count == DRM_OBJECT_MAX_PROPERTY) { |
3817 | WARN(1, "Failed to attach object property (type: 0x%x). Please " | |
3818 | "increase DRM_OBJECT_MAX_PROPERTY by 1 for each time " | |
3819 | "you see this message on the same object type.\n", | |
3820 | obj->type); | |
3821 | return; | |
c543188a PZ |
3822 | } |
3823 | ||
b17cd757 | 3824 | obj->properties->properties[count] = property; |
7f88a9be PZ |
3825 | obj->properties->values[count] = init_val; |
3826 | obj->properties->count++; | |
c543188a PZ |
3827 | } |
3828 | EXPORT_SYMBOL(drm_object_attach_property); | |
3829 | ||
c8e32cc1 DV |
3830 | /** |
3831 | * drm_object_property_set_value - set the value of a property | |
3832 | * @obj: drm mode object to set property value for | |
3833 | * @property: property to set | |
3834 | * @val: value the property should be set to | |
3835 | * | |
3836 | * This functions sets a given property on a given object. This function only | |
3837 | * changes the software state of the property, it does not call into the | |
3838 | * driver's ->set_property callback. | |
3839 | * | |
3840 | * Returns: | |
3841 | * Zero on success, error code on failure. | |
3842 | */ | |
c543188a PZ |
3843 | int drm_object_property_set_value(struct drm_mode_object *obj, |
3844 | struct drm_property *property, uint64_t val) | |
3845 | { | |
3846 | int i; | |
3847 | ||
7f88a9be | 3848 | for (i = 0; i < obj->properties->count; i++) { |
b17cd757 | 3849 | if (obj->properties->properties[i] == property) { |
c543188a PZ |
3850 | obj->properties->values[i] = val; |
3851 | return 0; | |
3852 | } | |
3853 | } | |
3854 | ||
3855 | return -EINVAL; | |
3856 | } | |
3857 | EXPORT_SYMBOL(drm_object_property_set_value); | |
3858 | ||
c8e32cc1 DV |
3859 | /** |
3860 | * drm_object_property_get_value - retrieve the value of a property | |
3861 | * @obj: drm mode object to get property value from | |
3862 | * @property: property to retrieve | |
3863 | * @val: storage for the property value | |
3864 | * | |
3865 | * This function retrieves the softare state of the given property for the given | |
3866 | * property. Since there is no driver callback to retrieve the current property | |
3867 | * value this might be out of sync with the hardware, depending upon the driver | |
3868 | * and property. | |
3869 | * | |
3870 | * Returns: | |
3871 | * Zero on success, error code on failure. | |
3872 | */ | |
c543188a PZ |
3873 | int drm_object_property_get_value(struct drm_mode_object *obj, |
3874 | struct drm_property *property, uint64_t *val) | |
3875 | { | |
3876 | int i; | |
3877 | ||
7f88a9be | 3878 | for (i = 0; i < obj->properties->count; i++) { |
b17cd757 | 3879 | if (obj->properties->properties[i] == property) { |
c543188a PZ |
3880 | *val = obj->properties->values[i]; |
3881 | return 0; | |
3882 | } | |
3883 | } | |
3884 | ||
3885 | return -EINVAL; | |
3886 | } | |
3887 | EXPORT_SYMBOL(drm_object_property_get_value); | |
3888 | ||
c8e32cc1 | 3889 | /** |
1a498633 | 3890 | * drm_mode_getproperty_ioctl - get the property metadata |
c8e32cc1 DV |
3891 | * @dev: DRM device |
3892 | * @data: ioctl data | |
3893 | * @file_priv: DRM file info | |
3894 | * | |
1a498633 DV |
3895 | * This function retrieves the metadata for a given property, like the different |
3896 | * possible values for an enum property or the limits for a range property. | |
3897 | * | |
3898 | * Blob properties are special | |
c8e32cc1 DV |
3899 | * |
3900 | * Called by the user via ioctl. | |
3901 | * | |
3902 | * Returns: | |
1a498633 | 3903 | * Zero on success, negative errno on failure. |
c8e32cc1 | 3904 | */ |
f453ba04 DA |
3905 | int drm_mode_getproperty_ioctl(struct drm_device *dev, |
3906 | void *data, struct drm_file *file_priv) | |
3907 | { | |
f453ba04 DA |
3908 | struct drm_mode_get_property *out_resp = data; |
3909 | struct drm_property *property; | |
3910 | int enum_count = 0; | |
f453ba04 DA |
3911 | int value_count = 0; |
3912 | int ret = 0, i; | |
3913 | int copied; | |
3914 | struct drm_property_enum *prop_enum; | |
3915 | struct drm_mode_property_enum __user *enum_ptr; | |
f453ba04 | 3916 | uint64_t __user *values_ptr; |
f453ba04 | 3917 | |
fb3b06c8 DA |
3918 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
3919 | return -EINVAL; | |
3920 | ||
84849903 | 3921 | drm_modeset_lock_all(dev); |
a2b34e22 RC |
3922 | property = drm_property_find(dev, out_resp->prop_id); |
3923 | if (!property) { | |
f27657f2 | 3924 | ret = -ENOENT; |
f453ba04 DA |
3925 | goto done; |
3926 | } | |
f453ba04 | 3927 | |
5ea22f24 RC |
3928 | if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) || |
3929 | drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) { | |
3758b341 | 3930 | list_for_each_entry(prop_enum, &property->enum_list, head) |
f453ba04 | 3931 | enum_count++; |
f453ba04 DA |
3932 | } |
3933 | ||
3934 | value_count = property->num_values; | |
3935 | ||
3936 | strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN); | |
3937 | out_resp->name[DRM_PROP_NAME_LEN-1] = 0; | |
3938 | out_resp->flags = property->flags; | |
3939 | ||
3940 | if ((out_resp->count_values >= value_count) && value_count) { | |
81f6c7f8 | 3941 | values_ptr = (uint64_t __user *)(unsigned long)out_resp->values_ptr; |
f453ba04 DA |
3942 | for (i = 0; i < value_count; i++) { |
3943 | if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) { | |
3944 | ret = -EFAULT; | |
3945 | goto done; | |
3946 | } | |
3947 | } | |
3948 | } | |
3949 | out_resp->count_values = value_count; | |
3950 | ||
5ea22f24 RC |
3951 | if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) || |
3952 | drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) { | |
f453ba04 DA |
3953 | if ((out_resp->count_enum_blobs >= enum_count) && enum_count) { |
3954 | copied = 0; | |
81f6c7f8 | 3955 | enum_ptr = (struct drm_mode_property_enum __user *)(unsigned long)out_resp->enum_blob_ptr; |
3758b341 | 3956 | list_for_each_entry(prop_enum, &property->enum_list, head) { |
f453ba04 DA |
3957 | |
3958 | if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) { | |
3959 | ret = -EFAULT; | |
3960 | goto done; | |
3961 | } | |
3962 | ||
3963 | if (copy_to_user(&enum_ptr[copied].name, | |
3964 | &prop_enum->name, DRM_PROP_NAME_LEN)) { | |
3965 | ret = -EFAULT; | |
3966 | goto done; | |
3967 | } | |
3968 | copied++; | |
3969 | } | |
3970 | } | |
3971 | out_resp->count_enum_blobs = enum_count; | |
3972 | } | |
3973 | ||
3758b341 DV |
3974 | /* |
3975 | * NOTE: The idea seems to have been to use this to read all the blob | |
3976 | * property values. But nothing ever added them to the corresponding | |
3977 | * list, userspace always used the special-purpose get_blob ioctl to | |
3978 | * read the value for a blob property. It also doesn't make a lot of | |
3979 | * sense to return values here when everything else is just metadata for | |
3980 | * the property itself. | |
3981 | */ | |
3982 | if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) | |
3983 | out_resp->count_enum_blobs = 0; | |
f453ba04 | 3984 | done: |
84849903 | 3985 | drm_modeset_unlock_all(dev); |
f453ba04 DA |
3986 | return ret; |
3987 | } | |
3988 | ||
ecbbe59b TR |
3989 | static struct drm_property_blob * |
3990 | drm_property_create_blob(struct drm_device *dev, size_t length, | |
12e6cecd | 3991 | const void *data) |
f453ba04 DA |
3992 | { |
3993 | struct drm_property_blob *blob; | |
6bfc56aa | 3994 | int ret; |
f453ba04 DA |
3995 | |
3996 | if (!length || !data) | |
3997 | return NULL; | |
3998 | ||
3999 | blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL); | |
4000 | if (!blob) | |
4001 | return NULL; | |
4002 | ||
6bfc56aa VS |
4003 | ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB); |
4004 | if (ret) { | |
4005 | kfree(blob); | |
4006 | return NULL; | |
4007 | } | |
4008 | ||
f453ba04 DA |
4009 | blob->length = length; |
4010 | ||
4011 | memcpy(blob->data, data, length); | |
4012 | ||
f453ba04 DA |
4013 | list_add_tail(&blob->head, &dev->mode_config.property_blob_list); |
4014 | return blob; | |
4015 | } | |
4016 | ||
4017 | static void drm_property_destroy_blob(struct drm_device *dev, | |
4018 | struct drm_property_blob *blob) | |
4019 | { | |
4020 | drm_mode_object_put(dev, &blob->base); | |
4021 | list_del(&blob->head); | |
4022 | kfree(blob); | |
4023 | } | |
4024 | ||
c8e32cc1 DV |
4025 | /** |
4026 | * drm_mode_getblob_ioctl - get the contents of a blob property value | |
4027 | * @dev: DRM device | |
4028 | * @data: ioctl data | |
4029 | * @file_priv: DRM file info | |
4030 | * | |
4031 | * This function retrieves the contents of a blob property. The value stored in | |
4032 | * an object's blob property is just a normal modeset object id. | |
4033 | * | |
4034 | * Called by the user via ioctl. | |
4035 | * | |
4036 | * Returns: | |
1a498633 | 4037 | * Zero on success, negative errno on failure. |
c8e32cc1 | 4038 | */ |
f453ba04 DA |
4039 | int drm_mode_getblob_ioctl(struct drm_device *dev, |
4040 | void *data, struct drm_file *file_priv) | |
4041 | { | |
f453ba04 DA |
4042 | struct drm_mode_get_blob *out_resp = data; |
4043 | struct drm_property_blob *blob; | |
4044 | int ret = 0; | |
81f6c7f8 | 4045 | void __user *blob_ptr; |
f453ba04 | 4046 | |
fb3b06c8 DA |
4047 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
4048 | return -EINVAL; | |
4049 | ||
84849903 | 4050 | drm_modeset_lock_all(dev); |
a2b34e22 RC |
4051 | blob = drm_property_blob_find(dev, out_resp->blob_id); |
4052 | if (!blob) { | |
f27657f2 | 4053 | ret = -ENOENT; |
f453ba04 DA |
4054 | goto done; |
4055 | } | |
f453ba04 DA |
4056 | |
4057 | if (out_resp->length == blob->length) { | |
81f6c7f8 | 4058 | blob_ptr = (void __user *)(unsigned long)out_resp->data; |
f453ba04 DA |
4059 | if (copy_to_user(blob_ptr, blob->data, blob->length)){ |
4060 | ret = -EFAULT; | |
4061 | goto done; | |
4062 | } | |
4063 | } | |
4064 | out_resp->length = blob->length; | |
4065 | ||
4066 | done: | |
84849903 | 4067 | drm_modeset_unlock_all(dev); |
f453ba04 DA |
4068 | return ret; |
4069 | } | |
4070 | ||
cc7096fb DA |
4071 | /** |
4072 | * drm_mode_connector_set_path_property - set tile property on connector | |
4073 | * @connector: connector to set property on. | |
4074 | * @path: path to use for property. | |
4075 | * | |
4076 | * This creates a property to expose to userspace to specify a | |
4077 | * connector path. This is mainly used for DisplayPort MST where | |
4078 | * connectors have a topology and we want to allow userspace to give | |
4079 | * them more meaningful names. | |
4080 | * | |
4081 | * Returns: | |
1a498633 | 4082 | * Zero on success, negative errno on failure. |
cc7096fb | 4083 | */ |
43aba7eb | 4084 | int drm_mode_connector_set_path_property(struct drm_connector *connector, |
12e6cecd | 4085 | const char *path) |
43aba7eb DA |
4086 | { |
4087 | struct drm_device *dev = connector->dev; | |
ecbbe59b TR |
4088 | size_t size = strlen(path) + 1; |
4089 | int ret; | |
43aba7eb DA |
4090 | |
4091 | connector->path_blob_ptr = drm_property_create_blob(connector->dev, | |
4092 | size, path); | |
4093 | if (!connector->path_blob_ptr) | |
4094 | return -EINVAL; | |
4095 | ||
4096 | ret = drm_object_property_set_value(&connector->base, | |
4097 | dev->mode_config.path_property, | |
4098 | connector->path_blob_ptr->base.id); | |
4099 | return ret; | |
4100 | } | |
4101 | EXPORT_SYMBOL(drm_mode_connector_set_path_property); | |
4102 | ||
6f134d7b DA |
4103 | /** |
4104 | * drm_mode_connector_set_tile_property - set tile property on connector | |
4105 | * @connector: connector to set property on. | |
4106 | * | |
4107 | * This looks up the tile information for a connector, and creates a | |
4108 | * property for userspace to parse if it exists. The property is of | |
4109 | * the form of 8 integers using ':' as a separator. | |
4110 | * | |
4111 | * Returns: | |
4112 | * Zero on success, errno on failure. | |
4113 | */ | |
4114 | int drm_mode_connector_set_tile_property(struct drm_connector *connector) | |
4115 | { | |
4116 | struct drm_device *dev = connector->dev; | |
4117 | int ret, size; | |
4118 | char tile[256]; | |
4119 | ||
4120 | if (connector->tile_blob_ptr) | |
4121 | drm_property_destroy_blob(dev, connector->tile_blob_ptr); | |
4122 | ||
4123 | if (!connector->has_tile) { | |
4124 | connector->tile_blob_ptr = NULL; | |
4125 | ret = drm_object_property_set_value(&connector->base, | |
4126 | dev->mode_config.tile_property, 0); | |
4127 | return ret; | |
4128 | } | |
4129 | ||
4130 | snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d", | |
4131 | connector->tile_group->id, connector->tile_is_single_monitor, | |
4132 | connector->num_h_tile, connector->num_v_tile, | |
4133 | connector->tile_h_loc, connector->tile_v_loc, | |
4134 | connector->tile_h_size, connector->tile_v_size); | |
4135 | size = strlen(tile) + 1; | |
4136 | ||
4137 | connector->tile_blob_ptr = drm_property_create_blob(connector->dev, | |
4138 | size, tile); | |
4139 | if (!connector->tile_blob_ptr) | |
4140 | return -EINVAL; | |
4141 | ||
4142 | ret = drm_object_property_set_value(&connector->base, | |
4143 | dev->mode_config.tile_property, | |
4144 | connector->tile_blob_ptr->base.id); | |
4145 | return ret; | |
4146 | } | |
4147 | EXPORT_SYMBOL(drm_mode_connector_set_tile_property); | |
4148 | ||
c8e32cc1 DV |
4149 | /** |
4150 | * drm_mode_connector_update_edid_property - update the edid property of a connector | |
4151 | * @connector: drm connector | |
4152 | * @edid: new value of the edid property | |
4153 | * | |
4154 | * This function creates a new blob modeset object and assigns its id to the | |
4155 | * connector's edid property. | |
4156 | * | |
4157 | * Returns: | |
1a498633 | 4158 | * Zero on success, negative errno on failure. |
c8e32cc1 | 4159 | */ |
f453ba04 | 4160 | int drm_mode_connector_update_edid_property(struct drm_connector *connector, |
12e6cecd | 4161 | const struct edid *edid) |
f453ba04 DA |
4162 | { |
4163 | struct drm_device *dev = connector->dev; | |
ecbbe59b TR |
4164 | size_t size; |
4165 | int ret; | |
f453ba04 | 4166 | |
4cf2b281 TW |
4167 | /* ignore requests to set edid when overridden */ |
4168 | if (connector->override_edid) | |
4169 | return 0; | |
4170 | ||
f453ba04 DA |
4171 | if (connector->edid_blob_ptr) |
4172 | drm_property_destroy_blob(dev, connector->edid_blob_ptr); | |
4173 | ||
4174 | /* Delete edid, when there is none. */ | |
4175 | if (!edid) { | |
4176 | connector->edid_blob_ptr = NULL; | |
58495563 | 4177 | ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0); |
f453ba04 DA |
4178 | return ret; |
4179 | } | |
4180 | ||
7466f4cc AJ |
4181 | size = EDID_LENGTH * (1 + edid->extensions); |
4182 | connector->edid_blob_ptr = drm_property_create_blob(connector->dev, | |
4183 | size, edid); | |
e655d122 SK |
4184 | if (!connector->edid_blob_ptr) |
4185 | return -EINVAL; | |
f453ba04 | 4186 | |
58495563 | 4187 | ret = drm_object_property_set_value(&connector->base, |
f453ba04 DA |
4188 | dev->mode_config.edid_property, |
4189 | connector->edid_blob_ptr->base.id); | |
4190 | ||
4191 | return ret; | |
4192 | } | |
4193 | EXPORT_SYMBOL(drm_mode_connector_update_edid_property); | |
4194 | ||
3843e71f RC |
4195 | /* Some properties could refer to dynamic refcnt'd objects, or things that |
4196 | * need special locking to handle lifetime issues (ie. to ensure the prop | |
4197 | * value doesn't become invalid part way through the property update due to | |
4198 | * race). The value returned by reference via 'obj' should be passed back | |
4199 | * to drm_property_change_valid_put() after the property is set (and the | |
4200 | * object to which the property is attached has a chance to take it's own | |
4201 | * reference). | |
4202 | */ | |
4203 | static bool drm_property_change_valid_get(struct drm_property *property, | |
4204 | uint64_t value, struct drm_mode_object **ref) | |
26a34815 PZ |
4205 | { |
4206 | if (property->flags & DRM_MODE_PROP_IMMUTABLE) | |
4207 | return false; | |
5ea22f24 | 4208 | |
3843e71f RC |
4209 | *ref = NULL; |
4210 | ||
5ea22f24 | 4211 | if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) { |
26a34815 PZ |
4212 | if (value < property->values[0] || value > property->values[1]) |
4213 | return false; | |
4214 | return true; | |
ebc44cf3 RC |
4215 | } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) { |
4216 | int64_t svalue = U642I64(value); | |
4217 | if (svalue < U642I64(property->values[0]) || | |
4218 | svalue > U642I64(property->values[1])) | |
4219 | return false; | |
4220 | return true; | |
5ea22f24 | 4221 | } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) { |
49e27545 | 4222 | int i; |
592c20ee | 4223 | uint64_t valid_mask = 0; |
49e27545 RC |
4224 | for (i = 0; i < property->num_values; i++) |
4225 | valid_mask |= (1ULL << property->values[i]); | |
4226 | return !(value & ~valid_mask); | |
5ea22f24 | 4227 | } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) { |
c4a56750 VS |
4228 | /* Only the driver knows */ |
4229 | return true; | |
98f75de4 | 4230 | } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) { |
98f75de4 RC |
4231 | /* a zero value for an object property translates to null: */ |
4232 | if (value == 0) | |
4233 | return true; | |
3843e71f RC |
4234 | |
4235 | /* handle refcnt'd objects specially: */ | |
4236 | if (property->values[0] == DRM_MODE_OBJECT_FB) { | |
4237 | struct drm_framebuffer *fb; | |
4238 | fb = drm_framebuffer_lookup(property->dev, value); | |
4239 | if (fb) { | |
4240 | *ref = &fb->base; | |
4241 | return true; | |
4242 | } else { | |
4243 | return false; | |
4244 | } | |
4245 | } else { | |
4246 | return _object_find(property->dev, value, property->values[0]) != NULL; | |
4247 | } | |
26a34815 PZ |
4248 | } else { |
4249 | int i; | |
4250 | for (i = 0; i < property->num_values; i++) | |
4251 | if (property->values[i] == value) | |
4252 | return true; | |
4253 | return false; | |
4254 | } | |
4255 | } | |
4256 | ||
3843e71f RC |
4257 | static void drm_property_change_valid_put(struct drm_property *property, |
4258 | struct drm_mode_object *ref) | |
4259 | { | |
4260 | if (!ref) | |
4261 | return; | |
4262 | ||
4263 | if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) { | |
4264 | if (property->values[0] == DRM_MODE_OBJECT_FB) | |
4265 | drm_framebuffer_unreference(obj_to_fb(ref)); | |
4266 | } | |
4267 | } | |
4268 | ||
c8e32cc1 DV |
4269 | /** |
4270 | * drm_mode_connector_property_set_ioctl - set the current value of a connector property | |
4271 | * @dev: DRM device | |
4272 | * @data: ioctl data | |
4273 | * @file_priv: DRM file info | |
4274 | * | |
4275 | * This function sets the current value for a connectors's property. It also | |
4276 | * calls into a driver's ->set_property callback to update the hardware state | |
4277 | * | |
4278 | * Called by the user via ioctl. | |
4279 | * | |
4280 | * Returns: | |
1a498633 | 4281 | * Zero on success, negative errno on failure. |
c8e32cc1 | 4282 | */ |
f453ba04 DA |
4283 | int drm_mode_connector_property_set_ioctl(struct drm_device *dev, |
4284 | void *data, struct drm_file *file_priv) | |
4285 | { | |
0057d8dd PZ |
4286 | struct drm_mode_connector_set_property *conn_set_prop = data; |
4287 | struct drm_mode_obj_set_property obj_set_prop = { | |
4288 | .value = conn_set_prop->value, | |
4289 | .prop_id = conn_set_prop->prop_id, | |
4290 | .obj_id = conn_set_prop->connector_id, | |
4291 | .obj_type = DRM_MODE_OBJECT_CONNECTOR | |
4292 | }; | |
fb3b06c8 | 4293 | |
0057d8dd PZ |
4294 | /* It does all the locking and checking we need */ |
4295 | return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv); | |
f453ba04 DA |
4296 | } |
4297 | ||
c543188a PZ |
4298 | static int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj, |
4299 | struct drm_property *property, | |
4300 | uint64_t value) | |
4301 | { | |
4302 | int ret = -EINVAL; | |
4303 | struct drm_connector *connector = obj_to_connector(obj); | |
4304 | ||
4305 | /* Do DPMS ourselves */ | |
4306 | if (property == connector->dev->mode_config.dpms_property) { | |
4307 | if (connector->funcs->dpms) | |
4308 | (*connector->funcs->dpms)(connector, (int)value); | |
4309 | ret = 0; | |
4310 | } else if (connector->funcs->set_property) | |
4311 | ret = connector->funcs->set_property(connector, property, value); | |
4312 | ||
4313 | /* store the property value if successful */ | |
4314 | if (!ret) | |
58495563 | 4315 | drm_object_property_set_value(&connector->base, property, value); |
c543188a PZ |
4316 | return ret; |
4317 | } | |
4318 | ||
bffd9de0 PZ |
4319 | static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj, |
4320 | struct drm_property *property, | |
4321 | uint64_t value) | |
4322 | { | |
4323 | int ret = -EINVAL; | |
4324 | struct drm_crtc *crtc = obj_to_crtc(obj); | |
4325 | ||
4326 | if (crtc->funcs->set_property) | |
4327 | ret = crtc->funcs->set_property(crtc, property, value); | |
4328 | if (!ret) | |
4329 | drm_object_property_set_value(obj, property, value); | |
4330 | ||
4331 | return ret; | |
4332 | } | |
4333 | ||
3a5f87c2 TW |
4334 | /** |
4335 | * drm_mode_plane_set_obj_prop - set the value of a property | |
4336 | * @plane: drm plane object to set property value for | |
4337 | * @property: property to set | |
4338 | * @value: value the property should be set to | |
4339 | * | |
4340 | * This functions sets a given property on a given plane object. This function | |
4341 | * calls the driver's ->set_property callback and changes the software state of | |
4342 | * the property if the callback succeeds. | |
4343 | * | |
4344 | * Returns: | |
4345 | * Zero on success, error code on failure. | |
4346 | */ | |
4347 | int drm_mode_plane_set_obj_prop(struct drm_plane *plane, | |
4348 | struct drm_property *property, | |
4349 | uint64_t value) | |
4d93914a RC |
4350 | { |
4351 | int ret = -EINVAL; | |
3a5f87c2 | 4352 | struct drm_mode_object *obj = &plane->base; |
4d93914a RC |
4353 | |
4354 | if (plane->funcs->set_property) | |
4355 | ret = plane->funcs->set_property(plane, property, value); | |
4356 | if (!ret) | |
4357 | drm_object_property_set_value(obj, property, value); | |
4358 | ||
4359 | return ret; | |
4360 | } | |
3a5f87c2 | 4361 | EXPORT_SYMBOL(drm_mode_plane_set_obj_prop); |
4d93914a | 4362 | |
c8e32cc1 | 4363 | /** |
1a498633 | 4364 | * drm_mode_obj_get_properties_ioctl - get the current value of a object's property |
c8e32cc1 DV |
4365 | * @dev: DRM device |
4366 | * @data: ioctl data | |
4367 | * @file_priv: DRM file info | |
4368 | * | |
4369 | * This function retrieves the current value for an object's property. Compared | |
4370 | * to the connector specific ioctl this one is extended to also work on crtc and | |
4371 | * plane objects. | |
4372 | * | |
4373 | * Called by the user via ioctl. | |
4374 | * | |
4375 | * Returns: | |
1a498633 | 4376 | * Zero on success, negative errno on failure. |
c8e32cc1 | 4377 | */ |
c543188a PZ |
4378 | int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data, |
4379 | struct drm_file *file_priv) | |
4380 | { | |
4381 | struct drm_mode_obj_get_properties *arg = data; | |
4382 | struct drm_mode_object *obj; | |
4383 | int ret = 0; | |
4384 | int i; | |
4385 | int copied = 0; | |
4386 | int props_count = 0; | |
4387 | uint32_t __user *props_ptr; | |
4388 | uint64_t __user *prop_values_ptr; | |
4389 | ||
4390 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
4391 | return -EINVAL; | |
4392 | ||
84849903 | 4393 | drm_modeset_lock_all(dev); |
c543188a PZ |
4394 | |
4395 | obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type); | |
4396 | if (!obj) { | |
f27657f2 | 4397 | ret = -ENOENT; |
c543188a PZ |
4398 | goto out; |
4399 | } | |
4400 | if (!obj->properties) { | |
4401 | ret = -EINVAL; | |
4402 | goto out; | |
4403 | } | |
4404 | ||
7f88a9be | 4405 | props_count = obj->properties->count; |
c543188a PZ |
4406 | |
4407 | /* This ioctl is called twice, once to determine how much space is | |
4408 | * needed, and the 2nd time to fill it. */ | |
4409 | if ((arg->count_props >= props_count) && props_count) { | |
4410 | copied = 0; | |
4411 | props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr); | |
4412 | prop_values_ptr = (uint64_t __user *)(unsigned long) | |
4413 | (arg->prop_values_ptr); | |
4414 | for (i = 0; i < props_count; i++) { | |
b17cd757 RC |
4415 | struct drm_property *prop = obj->properties->properties[i]; |
4416 | if (put_user(prop->base.id, props_ptr + copied)) { | |
c543188a PZ |
4417 | ret = -EFAULT; |
4418 | goto out; | |
4419 | } | |
4420 | if (put_user(obj->properties->values[i], | |
4421 | prop_values_ptr + copied)) { | |
4422 | ret = -EFAULT; | |
4423 | goto out; | |
4424 | } | |
4425 | copied++; | |
4426 | } | |
4427 | } | |
4428 | arg->count_props = props_count; | |
4429 | out: | |
84849903 | 4430 | drm_modeset_unlock_all(dev); |
c543188a PZ |
4431 | return ret; |
4432 | } | |
4433 | ||
c8e32cc1 DV |
4434 | /** |
4435 | * drm_mode_obj_set_property_ioctl - set the current value of an object's property | |
4436 | * @dev: DRM device | |
4437 | * @data: ioctl data | |
4438 | * @file_priv: DRM file info | |
4439 | * | |
4440 | * This function sets the current value for an object's property. It also calls | |
4441 | * into a driver's ->set_property callback to update the hardware state. | |
4442 | * Compared to the connector specific ioctl this one is extended to also work on | |
4443 | * crtc and plane objects. | |
4444 | * | |
4445 | * Called by the user via ioctl. | |
4446 | * | |
4447 | * Returns: | |
1a498633 | 4448 | * Zero on success, negative errno on failure. |
c8e32cc1 | 4449 | */ |
c543188a PZ |
4450 | int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data, |
4451 | struct drm_file *file_priv) | |
4452 | { | |
4453 | struct drm_mode_obj_set_property *arg = data; | |
4454 | struct drm_mode_object *arg_obj; | |
4455 | struct drm_mode_object *prop_obj; | |
4456 | struct drm_property *property; | |
3843e71f RC |
4457 | int i, ret = -EINVAL; |
4458 | struct drm_mode_object *ref; | |
c543188a PZ |
4459 | |
4460 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
4461 | return -EINVAL; | |
4462 | ||
84849903 | 4463 | drm_modeset_lock_all(dev); |
c543188a PZ |
4464 | |
4465 | arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type); | |
f27657f2 VS |
4466 | if (!arg_obj) { |
4467 | ret = -ENOENT; | |
c543188a | 4468 | goto out; |
f27657f2 | 4469 | } |
c543188a PZ |
4470 | if (!arg_obj->properties) |
4471 | goto out; | |
4472 | ||
7f88a9be | 4473 | for (i = 0; i < arg_obj->properties->count; i++) |
b17cd757 | 4474 | if (arg_obj->properties->properties[i]->base.id == arg->prop_id) |
c543188a PZ |
4475 | break; |
4476 | ||
7f88a9be | 4477 | if (i == arg_obj->properties->count) |
c543188a PZ |
4478 | goto out; |
4479 | ||
4480 | prop_obj = drm_mode_object_find(dev, arg->prop_id, | |
4481 | DRM_MODE_OBJECT_PROPERTY); | |
f27657f2 VS |
4482 | if (!prop_obj) { |
4483 | ret = -ENOENT; | |
c543188a | 4484 | goto out; |
f27657f2 | 4485 | } |
c543188a PZ |
4486 | property = obj_to_property(prop_obj); |
4487 | ||
3843e71f | 4488 | if (!drm_property_change_valid_get(property, arg->value, &ref)) |
c543188a PZ |
4489 | goto out; |
4490 | ||
4491 | switch (arg_obj->type) { | |
4492 | case DRM_MODE_OBJECT_CONNECTOR: | |
4493 | ret = drm_mode_connector_set_obj_prop(arg_obj, property, | |
4494 | arg->value); | |
4495 | break; | |
bffd9de0 PZ |
4496 | case DRM_MODE_OBJECT_CRTC: |
4497 | ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value); | |
4498 | break; | |
4d93914a | 4499 | case DRM_MODE_OBJECT_PLANE: |
3a5f87c2 TW |
4500 | ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj), |
4501 | property, arg->value); | |
4d93914a | 4502 | break; |
c543188a PZ |
4503 | } |
4504 | ||
3843e71f RC |
4505 | drm_property_change_valid_put(property, ref); |
4506 | ||
c543188a | 4507 | out: |
84849903 | 4508 | drm_modeset_unlock_all(dev); |
c543188a PZ |
4509 | return ret; |
4510 | } | |
4511 | ||
c8e32cc1 DV |
4512 | /** |
4513 | * drm_mode_connector_attach_encoder - attach a connector to an encoder | |
4514 | * @connector: connector to attach | |
4515 | * @encoder: encoder to attach @connector to | |
4516 | * | |
4517 | * This function links up a connector to an encoder. Note that the routing | |
4518 | * restrictions between encoders and crtcs are exposed to userspace through the | |
4519 | * possible_clones and possible_crtcs bitmasks. | |
4520 | * | |
4521 | * Returns: | |
1a498633 | 4522 | * Zero on success, negative errno on failure. |
c8e32cc1 | 4523 | */ |
f453ba04 DA |
4524 | int drm_mode_connector_attach_encoder(struct drm_connector *connector, |
4525 | struct drm_encoder *encoder) | |
4526 | { | |
4527 | int i; | |
4528 | ||
4529 | for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { | |
4530 | if (connector->encoder_ids[i] == 0) { | |
4531 | connector->encoder_ids[i] = encoder->base.id; | |
4532 | return 0; | |
4533 | } | |
4534 | } | |
4535 | return -ENOMEM; | |
4536 | } | |
4537 | EXPORT_SYMBOL(drm_mode_connector_attach_encoder); | |
4538 | ||
c8e32cc1 DV |
4539 | /** |
4540 | * drm_mode_crtc_set_gamma_size - set the gamma table size | |
4541 | * @crtc: CRTC to set the gamma table size for | |
4542 | * @gamma_size: size of the gamma table | |
4543 | * | |
4544 | * Drivers which support gamma tables should set this to the supported gamma | |
4545 | * table size when initializing the CRTC. Currently the drm core only supports a | |
4546 | * fixed gamma table size. | |
4547 | * | |
4548 | * Returns: | |
1a498633 | 4549 | * Zero on success, negative errno on failure. |
c8e32cc1 | 4550 | */ |
4cae5b84 | 4551 | int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc, |
c8e32cc1 | 4552 | int gamma_size) |
f453ba04 DA |
4553 | { |
4554 | crtc->gamma_size = gamma_size; | |
4555 | ||
4556 | crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL); | |
4557 | if (!crtc->gamma_store) { | |
4558 | crtc->gamma_size = 0; | |
4cae5b84 | 4559 | return -ENOMEM; |
f453ba04 DA |
4560 | } |
4561 | ||
4cae5b84 | 4562 | return 0; |
f453ba04 DA |
4563 | } |
4564 | EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size); | |
4565 | ||
c8e32cc1 DV |
4566 | /** |
4567 | * drm_mode_gamma_set_ioctl - set the gamma table | |
4568 | * @dev: DRM device | |
4569 | * @data: ioctl data | |
4570 | * @file_priv: DRM file info | |
4571 | * | |
4572 | * Set the gamma table of a CRTC to the one passed in by the user. Userspace can | |
4573 | * inquire the required gamma table size through drm_mode_gamma_get_ioctl. | |
4574 | * | |
4575 | * Called by the user via ioctl. | |
4576 | * | |
4577 | * Returns: | |
1a498633 | 4578 | * Zero on success, negative errno on failure. |
c8e32cc1 | 4579 | */ |
f453ba04 DA |
4580 | int drm_mode_gamma_set_ioctl(struct drm_device *dev, |
4581 | void *data, struct drm_file *file_priv) | |
4582 | { | |
4583 | struct drm_mode_crtc_lut *crtc_lut = data; | |
f453ba04 DA |
4584 | struct drm_crtc *crtc; |
4585 | void *r_base, *g_base, *b_base; | |
4586 | int size; | |
4587 | int ret = 0; | |
4588 | ||
fb3b06c8 DA |
4589 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
4590 | return -EINVAL; | |
4591 | ||
84849903 | 4592 | drm_modeset_lock_all(dev); |
a2b34e22 RC |
4593 | crtc = drm_crtc_find(dev, crtc_lut->crtc_id); |
4594 | if (!crtc) { | |
f27657f2 | 4595 | ret = -ENOENT; |
f453ba04 DA |
4596 | goto out; |
4597 | } | |
f453ba04 | 4598 | |
ebe0f244 LP |
4599 | if (crtc->funcs->gamma_set == NULL) { |
4600 | ret = -ENOSYS; | |
4601 | goto out; | |
4602 | } | |
4603 | ||
f453ba04 DA |
4604 | /* memcpy into gamma store */ |
4605 | if (crtc_lut->gamma_size != crtc->gamma_size) { | |
4606 | ret = -EINVAL; | |
4607 | goto out; | |
4608 | } | |
4609 | ||
4610 | size = crtc_lut->gamma_size * (sizeof(uint16_t)); | |
4611 | r_base = crtc->gamma_store; | |
4612 | if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) { | |
4613 | ret = -EFAULT; | |
4614 | goto out; | |
4615 | } | |
4616 | ||
4617 | g_base = r_base + size; | |
4618 | if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) { | |
4619 | ret = -EFAULT; | |
4620 | goto out; | |
4621 | } | |
4622 | ||
4623 | b_base = g_base + size; | |
4624 | if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) { | |
4625 | ret = -EFAULT; | |
4626 | goto out; | |
4627 | } | |
4628 | ||
7203425a | 4629 | crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size); |
f453ba04 DA |
4630 | |
4631 | out: | |
84849903 | 4632 | drm_modeset_unlock_all(dev); |
f453ba04 DA |
4633 | return ret; |
4634 | ||
4635 | } | |
4636 | ||
c8e32cc1 DV |
4637 | /** |
4638 | * drm_mode_gamma_get_ioctl - get the gamma table | |
4639 | * @dev: DRM device | |
4640 | * @data: ioctl data | |
4641 | * @file_priv: DRM file info | |
4642 | * | |
4643 | * Copy the current gamma table into the storage provided. This also provides | |
4644 | * the gamma table size the driver expects, which can be used to size the | |
4645 | * allocated storage. | |
4646 | * | |
4647 | * Called by the user via ioctl. | |
4648 | * | |
4649 | * Returns: | |
1a498633 | 4650 | * Zero on success, negative errno on failure. |
c8e32cc1 | 4651 | */ |
f453ba04 DA |
4652 | int drm_mode_gamma_get_ioctl(struct drm_device *dev, |
4653 | void *data, struct drm_file *file_priv) | |
4654 | { | |
4655 | struct drm_mode_crtc_lut *crtc_lut = data; | |
f453ba04 DA |
4656 | struct drm_crtc *crtc; |
4657 | void *r_base, *g_base, *b_base; | |
4658 | int size; | |
4659 | int ret = 0; | |
4660 | ||
fb3b06c8 DA |
4661 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
4662 | return -EINVAL; | |
4663 | ||
84849903 | 4664 | drm_modeset_lock_all(dev); |
a2b34e22 RC |
4665 | crtc = drm_crtc_find(dev, crtc_lut->crtc_id); |
4666 | if (!crtc) { | |
f27657f2 | 4667 | ret = -ENOENT; |
f453ba04 DA |
4668 | goto out; |
4669 | } | |
f453ba04 DA |
4670 | |
4671 | /* memcpy into gamma store */ | |
4672 | if (crtc_lut->gamma_size != crtc->gamma_size) { | |
4673 | ret = -EINVAL; | |
4674 | goto out; | |
4675 | } | |
4676 | ||
4677 | size = crtc_lut->gamma_size * (sizeof(uint16_t)); | |
4678 | r_base = crtc->gamma_store; | |
4679 | if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) { | |
4680 | ret = -EFAULT; | |
4681 | goto out; | |
4682 | } | |
4683 | ||
4684 | g_base = r_base + size; | |
4685 | if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) { | |
4686 | ret = -EFAULT; | |
4687 | goto out; | |
4688 | } | |
4689 | ||
4690 | b_base = g_base + size; | |
4691 | if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) { | |
4692 | ret = -EFAULT; | |
4693 | goto out; | |
4694 | } | |
4695 | out: | |
84849903 | 4696 | drm_modeset_unlock_all(dev); |
f453ba04 DA |
4697 | return ret; |
4698 | } | |
d91d8a3f | 4699 | |
c8e32cc1 DV |
4700 | /** |
4701 | * drm_mode_page_flip_ioctl - schedule an asynchronous fb update | |
4702 | * @dev: DRM device | |
4703 | * @data: ioctl data | |
4704 | * @file_priv: DRM file info | |
4705 | * | |
4706 | * This schedules an asynchronous update on a given CRTC, called page flip. | |
4707 | * Optionally a drm event is generated to signal the completion of the event. | |
4708 | * Generic drivers cannot assume that a pageflip with changed framebuffer | |
4709 | * properties (including driver specific metadata like tiling layout) will work, | |
4710 | * but some drivers support e.g. pixel format changes through the pageflip | |
4711 | * ioctl. | |
4712 | * | |
4713 | * Called by the user via ioctl. | |
4714 | * | |
4715 | * Returns: | |
1a498633 | 4716 | * Zero on success, negative errno on failure. |
c8e32cc1 | 4717 | */ |
d91d8a3f KH |
4718 | int drm_mode_page_flip_ioctl(struct drm_device *dev, |
4719 | void *data, struct drm_file *file_priv) | |
4720 | { | |
4721 | struct drm_mode_crtc_page_flip *page_flip = data; | |
d91d8a3f | 4722 | struct drm_crtc *crtc; |
3d30a59b | 4723 | struct drm_framebuffer *fb = NULL; |
d91d8a3f KH |
4724 | struct drm_pending_vblank_event *e = NULL; |
4725 | unsigned long flags; | |
4726 | int ret = -EINVAL; | |
4727 | ||
4728 | if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS || | |
4729 | page_flip->reserved != 0) | |
4730 | return -EINVAL; | |
4731 | ||
62f2104f KP |
4732 | if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip) |
4733 | return -EINVAL; | |
4734 | ||
a2b34e22 RC |
4735 | crtc = drm_crtc_find(dev, page_flip->crtc_id); |
4736 | if (!crtc) | |
f27657f2 | 4737 | return -ENOENT; |
d91d8a3f | 4738 | |
4d02e2de | 4739 | drm_modeset_lock_crtc(crtc, crtc->primary); |
f4510a27 | 4740 | if (crtc->primary->fb == NULL) { |
90c1efdd CW |
4741 | /* The framebuffer is currently unbound, presumably |
4742 | * due to a hotplug event, that userspace has not | |
4743 | * yet discovered. | |
4744 | */ | |
4745 | ret = -EBUSY; | |
4746 | goto out; | |
4747 | } | |
4748 | ||
d91d8a3f KH |
4749 | if (crtc->funcs->page_flip == NULL) |
4750 | goto out; | |
4751 | ||
786b99ed | 4752 | fb = drm_framebuffer_lookup(dev, page_flip->fb_id); |
37c4e705 VS |
4753 | if (!fb) { |
4754 | ret = -ENOENT; | |
d91d8a3f | 4755 | goto out; |
37c4e705 | 4756 | } |
d91d8a3f | 4757 | |
c11e9283 DL |
4758 | ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb); |
4759 | if (ret) | |
5f61bb42 | 4760 | goto out; |
5f61bb42 | 4761 | |
f4510a27 | 4762 | if (crtc->primary->fb->pixel_format != fb->pixel_format) { |
909d9cda LP |
4763 | DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n"); |
4764 | ret = -EINVAL; | |
4765 | goto out; | |
4766 | } | |
4767 | ||
d91d8a3f KH |
4768 | if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) { |
4769 | ret = -ENOMEM; | |
4770 | spin_lock_irqsave(&dev->event_lock, flags); | |
4771 | if (file_priv->event_space < sizeof e->event) { | |
4772 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
4773 | goto out; | |
4774 | } | |
4775 | file_priv->event_space -= sizeof e->event; | |
4776 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
4777 | ||
4778 | e = kzalloc(sizeof *e, GFP_KERNEL); | |
4779 | if (e == NULL) { | |
4780 | spin_lock_irqsave(&dev->event_lock, flags); | |
4781 | file_priv->event_space += sizeof e->event; | |
4782 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
4783 | goto out; | |
4784 | } | |
4785 | ||
7bd4d7be | 4786 | e->event.base.type = DRM_EVENT_FLIP_COMPLETE; |
d91d8a3f KH |
4787 | e->event.base.length = sizeof e->event; |
4788 | e->event.user_data = page_flip->user_data; | |
4789 | e->base.event = &e->event.base; | |
4790 | e->base.file_priv = file_priv; | |
4791 | e->base.destroy = | |
4792 | (void (*) (struct drm_pending_event *)) kfree; | |
4793 | } | |
4794 | ||
3d30a59b | 4795 | crtc->primary->old_fb = crtc->primary->fb; |
ed8d1975 | 4796 | ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags); |
d91d8a3f | 4797 | if (ret) { |
aef6a7ee JS |
4798 | if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) { |
4799 | spin_lock_irqsave(&dev->event_lock, flags); | |
4800 | file_priv->event_space += sizeof e->event; | |
4801 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
4802 | kfree(e); | |
4803 | } | |
b0d12325 | 4804 | /* Keep the old fb, don't unref it. */ |
3d30a59b | 4805 | crtc->primary->old_fb = NULL; |
b0d12325 | 4806 | } else { |
8cf1e981 TR |
4807 | /* |
4808 | * Warn if the driver hasn't properly updated the crtc->fb | |
4809 | * field to reflect that the new framebuffer is now used. | |
4810 | * Failing to do so will screw with the reference counting | |
4811 | * on framebuffers. | |
4812 | */ | |
f4510a27 | 4813 | WARN_ON(crtc->primary->fb != fb); |
b0d12325 DV |
4814 | /* Unref only the old framebuffer. */ |
4815 | fb = NULL; | |
d91d8a3f KH |
4816 | } |
4817 | ||
4818 | out: | |
b0d12325 DV |
4819 | if (fb) |
4820 | drm_framebuffer_unreference(fb); | |
3d30a59b DV |
4821 | if (crtc->primary->old_fb) |
4822 | drm_framebuffer_unreference(crtc->primary->old_fb); | |
4823 | crtc->primary->old_fb = NULL; | |
d059f652 | 4824 | drm_modeset_unlock_crtc(crtc); |
b4d5e7d1 | 4825 | |
d91d8a3f KH |
4826 | return ret; |
4827 | } | |
eb033556 | 4828 | |
c8e32cc1 DV |
4829 | /** |
4830 | * drm_mode_config_reset - call ->reset callbacks | |
4831 | * @dev: drm device | |
4832 | * | |
4833 | * This functions calls all the crtc's, encoder's and connector's ->reset | |
4834 | * callback. Drivers can use this in e.g. their driver load or resume code to | |
4835 | * reset hardware and software state. | |
4836 | */ | |
eb033556 CW |
4837 | void drm_mode_config_reset(struct drm_device *dev) |
4838 | { | |
4839 | struct drm_crtc *crtc; | |
2a0d7cfd | 4840 | struct drm_plane *plane; |
eb033556 CW |
4841 | struct drm_encoder *encoder; |
4842 | struct drm_connector *connector; | |
4843 | ||
2a0d7cfd DV |
4844 | list_for_each_entry(plane, &dev->mode_config.plane_list, head) |
4845 | if (plane->funcs->reset) | |
4846 | plane->funcs->reset(plane); | |
4847 | ||
eb033556 CW |
4848 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) |
4849 | if (crtc->funcs->reset) | |
4850 | crtc->funcs->reset(crtc); | |
4851 | ||
4852 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) | |
4853 | if (encoder->funcs->reset) | |
4854 | encoder->funcs->reset(encoder); | |
4855 | ||
5e2cb2f6 DV |
4856 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
4857 | connector->status = connector_status_unknown; | |
4858 | ||
eb033556 CW |
4859 | if (connector->funcs->reset) |
4860 | connector->funcs->reset(connector); | |
5e2cb2f6 | 4861 | } |
eb033556 CW |
4862 | } |
4863 | EXPORT_SYMBOL(drm_mode_config_reset); | |
ff72145b | 4864 | |
c8e32cc1 DV |
4865 | /** |
4866 | * drm_mode_create_dumb_ioctl - create a dumb backing storage buffer | |
4867 | * @dev: DRM device | |
4868 | * @data: ioctl data | |
4869 | * @file_priv: DRM file info | |
4870 | * | |
4871 | * This creates a new dumb buffer in the driver's backing storage manager (GEM, | |
4872 | * TTM or something else entirely) and returns the resulting buffer handle. This | |
4873 | * handle can then be wrapped up into a framebuffer modeset object. | |
4874 | * | |
4875 | * Note that userspace is not allowed to use such objects for render | |
4876 | * acceleration - drivers must create their own private ioctls for such a use | |
4877 | * case. | |
4878 | * | |
4879 | * Called by the user via ioctl. | |
4880 | * | |
4881 | * Returns: | |
1a498633 | 4882 | * Zero on success, negative errno on failure. |
c8e32cc1 | 4883 | */ |
ff72145b DA |
4884 | int drm_mode_create_dumb_ioctl(struct drm_device *dev, |
4885 | void *data, struct drm_file *file_priv) | |
4886 | { | |
4887 | struct drm_mode_create_dumb *args = data; | |
b28cd41f | 4888 | u32 cpp, stride, size; |
ff72145b DA |
4889 | |
4890 | if (!dev->driver->dumb_create) | |
4891 | return -ENOSYS; | |
b28cd41f DH |
4892 | if (!args->width || !args->height || !args->bpp) |
4893 | return -EINVAL; | |
4894 | ||
4895 | /* overflow checks for 32bit size calculations */ | |
00e72089 | 4896 | /* NOTE: DIV_ROUND_UP() can overflow */ |
b28cd41f | 4897 | cpp = DIV_ROUND_UP(args->bpp, 8); |
00e72089 | 4898 | if (!cpp || cpp > 0xffffffffU / args->width) |
b28cd41f DH |
4899 | return -EINVAL; |
4900 | stride = cpp * args->width; | |
4901 | if (args->height > 0xffffffffU / stride) | |
4902 | return -EINVAL; | |
4903 | ||
4904 | /* test for wrap-around */ | |
4905 | size = args->height * stride; | |
4906 | if (PAGE_ALIGN(size) == 0) | |
4907 | return -EINVAL; | |
4908 | ||
f6085952 TR |
4909 | /* |
4910 | * handle, pitch and size are output parameters. Zero them out to | |
4911 | * prevent drivers from accidentally using uninitialized data. Since | |
4912 | * not all existing userspace is clearing these fields properly we | |
4913 | * cannot reject IOCTL with garbage in them. | |
4914 | */ | |
4915 | args->handle = 0; | |
4916 | args->pitch = 0; | |
4917 | args->size = 0; | |
4918 | ||
ff72145b DA |
4919 | return dev->driver->dumb_create(file_priv, dev, args); |
4920 | } | |
4921 | ||
c8e32cc1 DV |
4922 | /** |
4923 | * drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer | |
4924 | * @dev: DRM device | |
4925 | * @data: ioctl data | |
4926 | * @file_priv: DRM file info | |
4927 | * | |
4928 | * Allocate an offset in the drm device node's address space to be able to | |
4929 | * memory map a dumb buffer. | |
4930 | * | |
4931 | * Called by the user via ioctl. | |
4932 | * | |
4933 | * Returns: | |
1a498633 | 4934 | * Zero on success, negative errno on failure. |
c8e32cc1 | 4935 | */ |
ff72145b DA |
4936 | int drm_mode_mmap_dumb_ioctl(struct drm_device *dev, |
4937 | void *data, struct drm_file *file_priv) | |
4938 | { | |
4939 | struct drm_mode_map_dumb *args = data; | |
4940 | ||
4941 | /* call driver ioctl to get mmap offset */ | |
4942 | if (!dev->driver->dumb_map_offset) | |
4943 | return -ENOSYS; | |
4944 | ||
4945 | return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset); | |
4946 | } | |
4947 | ||
c8e32cc1 DV |
4948 | /** |
4949 | * drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer | |
4950 | * @dev: DRM device | |
4951 | * @data: ioctl data | |
4952 | * @file_priv: DRM file info | |
4953 | * | |
4954 | * This destroys the userspace handle for the given dumb backing storage buffer. | |
4955 | * Since buffer objects must be reference counted in the kernel a buffer object | |
4956 | * won't be immediately freed if a framebuffer modeset object still uses it. | |
4957 | * | |
4958 | * Called by the user via ioctl. | |
4959 | * | |
4960 | * Returns: | |
1a498633 | 4961 | * Zero on success, negative errno on failure. |
c8e32cc1 | 4962 | */ |
ff72145b DA |
4963 | int drm_mode_destroy_dumb_ioctl(struct drm_device *dev, |
4964 | void *data, struct drm_file *file_priv) | |
4965 | { | |
4966 | struct drm_mode_destroy_dumb *args = data; | |
4967 | ||
4968 | if (!dev->driver->dumb_destroy) | |
4969 | return -ENOSYS; | |
4970 | ||
4971 | return dev->driver->dumb_destroy(file_priv, dev, args->handle); | |
4972 | } | |
248dbc23 | 4973 | |
c8e32cc1 DV |
4974 | /** |
4975 | * drm_fb_get_bpp_depth - get the bpp/depth values for format | |
4976 | * @format: pixel format (DRM_FORMAT_*) | |
4977 | * @depth: storage for the depth value | |
4978 | * @bpp: storage for the bpp value | |
4979 | * | |
4980 | * This only supports RGB formats here for compat with code that doesn't use | |
4981 | * pixel formats directly yet. | |
248dbc23 DA |
4982 | */ |
4983 | void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth, | |
4984 | int *bpp) | |
4985 | { | |
4986 | switch (format) { | |
c51a6bc5 | 4987 | case DRM_FORMAT_C8: |
04b3924d VS |
4988 | case DRM_FORMAT_RGB332: |
4989 | case DRM_FORMAT_BGR233: | |
248dbc23 DA |
4990 | *depth = 8; |
4991 | *bpp = 8; | |
4992 | break; | |
04b3924d VS |
4993 | case DRM_FORMAT_XRGB1555: |
4994 | case DRM_FORMAT_XBGR1555: | |
4995 | case DRM_FORMAT_RGBX5551: | |
4996 | case DRM_FORMAT_BGRX5551: | |
4997 | case DRM_FORMAT_ARGB1555: | |
4998 | case DRM_FORMAT_ABGR1555: | |
4999 | case DRM_FORMAT_RGBA5551: | |
5000 | case DRM_FORMAT_BGRA5551: | |
248dbc23 DA |
5001 | *depth = 15; |
5002 | *bpp = 16; | |
5003 | break; | |
04b3924d VS |
5004 | case DRM_FORMAT_RGB565: |
5005 | case DRM_FORMAT_BGR565: | |
248dbc23 DA |
5006 | *depth = 16; |
5007 | *bpp = 16; | |
5008 | break; | |
04b3924d VS |
5009 | case DRM_FORMAT_RGB888: |
5010 | case DRM_FORMAT_BGR888: | |
5011 | *depth = 24; | |
5012 | *bpp = 24; | |
5013 | break; | |
5014 | case DRM_FORMAT_XRGB8888: | |
5015 | case DRM_FORMAT_XBGR8888: | |
5016 | case DRM_FORMAT_RGBX8888: | |
5017 | case DRM_FORMAT_BGRX8888: | |
248dbc23 DA |
5018 | *depth = 24; |
5019 | *bpp = 32; | |
5020 | break; | |
04b3924d VS |
5021 | case DRM_FORMAT_XRGB2101010: |
5022 | case DRM_FORMAT_XBGR2101010: | |
5023 | case DRM_FORMAT_RGBX1010102: | |
5024 | case DRM_FORMAT_BGRX1010102: | |
5025 | case DRM_FORMAT_ARGB2101010: | |
5026 | case DRM_FORMAT_ABGR2101010: | |
5027 | case DRM_FORMAT_RGBA1010102: | |
5028 | case DRM_FORMAT_BGRA1010102: | |
248dbc23 DA |
5029 | *depth = 30; |
5030 | *bpp = 32; | |
5031 | break; | |
04b3924d VS |
5032 | case DRM_FORMAT_ARGB8888: |
5033 | case DRM_FORMAT_ABGR8888: | |
5034 | case DRM_FORMAT_RGBA8888: | |
5035 | case DRM_FORMAT_BGRA8888: | |
248dbc23 DA |
5036 | *depth = 32; |
5037 | *bpp = 32; | |
5038 | break; | |
5039 | default: | |
23c453a4 VS |
5040 | DRM_DEBUG_KMS("unsupported pixel format %s\n", |
5041 | drm_get_format_name(format)); | |
248dbc23 DA |
5042 | *depth = 0; |
5043 | *bpp = 0; | |
5044 | break; | |
5045 | } | |
5046 | } | |
5047 | EXPORT_SYMBOL(drm_fb_get_bpp_depth); | |
141670e9 VS |
5048 | |
5049 | /** | |
5050 | * drm_format_num_planes - get the number of planes for format | |
5051 | * @format: pixel format (DRM_FORMAT_*) | |
5052 | * | |
c8e32cc1 | 5053 | * Returns: |
141670e9 VS |
5054 | * The number of planes used by the specified pixel format. |
5055 | */ | |
5056 | int drm_format_num_planes(uint32_t format) | |
5057 | { | |
5058 | switch (format) { | |
5059 | case DRM_FORMAT_YUV410: | |
5060 | case DRM_FORMAT_YVU410: | |
5061 | case DRM_FORMAT_YUV411: | |
5062 | case DRM_FORMAT_YVU411: | |
5063 | case DRM_FORMAT_YUV420: | |
5064 | case DRM_FORMAT_YVU420: | |
5065 | case DRM_FORMAT_YUV422: | |
5066 | case DRM_FORMAT_YVU422: | |
5067 | case DRM_FORMAT_YUV444: | |
5068 | case DRM_FORMAT_YVU444: | |
5069 | return 3; | |
5070 | case DRM_FORMAT_NV12: | |
5071 | case DRM_FORMAT_NV21: | |
5072 | case DRM_FORMAT_NV16: | |
5073 | case DRM_FORMAT_NV61: | |
ba623f6a LP |
5074 | case DRM_FORMAT_NV24: |
5075 | case DRM_FORMAT_NV42: | |
141670e9 VS |
5076 | return 2; |
5077 | default: | |
5078 | return 1; | |
5079 | } | |
5080 | } | |
5081 | EXPORT_SYMBOL(drm_format_num_planes); | |
5a86bd55 VS |
5082 | |
5083 | /** | |
5084 | * drm_format_plane_cpp - determine the bytes per pixel value | |
5085 | * @format: pixel format (DRM_FORMAT_*) | |
5086 | * @plane: plane index | |
5087 | * | |
c8e32cc1 | 5088 | * Returns: |
5a86bd55 VS |
5089 | * The bytes per pixel value for the specified plane. |
5090 | */ | |
5091 | int drm_format_plane_cpp(uint32_t format, int plane) | |
5092 | { | |
5093 | unsigned int depth; | |
5094 | int bpp; | |
5095 | ||
5096 | if (plane >= drm_format_num_planes(format)) | |
5097 | return 0; | |
5098 | ||
5099 | switch (format) { | |
5100 | case DRM_FORMAT_YUYV: | |
5101 | case DRM_FORMAT_YVYU: | |
5102 | case DRM_FORMAT_UYVY: | |
5103 | case DRM_FORMAT_VYUY: | |
5104 | return 2; | |
5105 | case DRM_FORMAT_NV12: | |
5106 | case DRM_FORMAT_NV21: | |
5107 | case DRM_FORMAT_NV16: | |
5108 | case DRM_FORMAT_NV61: | |
ba623f6a LP |
5109 | case DRM_FORMAT_NV24: |
5110 | case DRM_FORMAT_NV42: | |
5a86bd55 VS |
5111 | return plane ? 2 : 1; |
5112 | case DRM_FORMAT_YUV410: | |
5113 | case DRM_FORMAT_YVU410: | |
5114 | case DRM_FORMAT_YUV411: | |
5115 | case DRM_FORMAT_YVU411: | |
5116 | case DRM_FORMAT_YUV420: | |
5117 | case DRM_FORMAT_YVU420: | |
5118 | case DRM_FORMAT_YUV422: | |
5119 | case DRM_FORMAT_YVU422: | |
5120 | case DRM_FORMAT_YUV444: | |
5121 | case DRM_FORMAT_YVU444: | |
5122 | return 1; | |
5123 | default: | |
5124 | drm_fb_get_bpp_depth(format, &depth, &bpp); | |
5125 | return bpp >> 3; | |
5126 | } | |
5127 | } | |
5128 | EXPORT_SYMBOL(drm_format_plane_cpp); | |
01b68b04 VS |
5129 | |
5130 | /** | |
5131 | * drm_format_horz_chroma_subsampling - get the horizontal chroma subsampling factor | |
5132 | * @format: pixel format (DRM_FORMAT_*) | |
5133 | * | |
c8e32cc1 | 5134 | * Returns: |
01b68b04 VS |
5135 | * The horizontal chroma subsampling factor for the |
5136 | * specified pixel format. | |
5137 | */ | |
5138 | int drm_format_horz_chroma_subsampling(uint32_t format) | |
5139 | { | |
5140 | switch (format) { | |
5141 | case DRM_FORMAT_YUV411: | |
5142 | case DRM_FORMAT_YVU411: | |
5143 | case DRM_FORMAT_YUV410: | |
5144 | case DRM_FORMAT_YVU410: | |
5145 | return 4; | |
5146 | case DRM_FORMAT_YUYV: | |
5147 | case DRM_FORMAT_YVYU: | |
5148 | case DRM_FORMAT_UYVY: | |
5149 | case DRM_FORMAT_VYUY: | |
5150 | case DRM_FORMAT_NV12: | |
5151 | case DRM_FORMAT_NV21: | |
5152 | case DRM_FORMAT_NV16: | |
5153 | case DRM_FORMAT_NV61: | |
5154 | case DRM_FORMAT_YUV422: | |
5155 | case DRM_FORMAT_YVU422: | |
5156 | case DRM_FORMAT_YUV420: | |
5157 | case DRM_FORMAT_YVU420: | |
5158 | return 2; | |
5159 | default: | |
5160 | return 1; | |
5161 | } | |
5162 | } | |
5163 | EXPORT_SYMBOL(drm_format_horz_chroma_subsampling); | |
5164 | ||
5165 | /** | |
5166 | * drm_format_vert_chroma_subsampling - get the vertical chroma subsampling factor | |
5167 | * @format: pixel format (DRM_FORMAT_*) | |
5168 | * | |
c8e32cc1 | 5169 | * Returns: |
01b68b04 VS |
5170 | * The vertical chroma subsampling factor for the |
5171 | * specified pixel format. | |
5172 | */ | |
5173 | int drm_format_vert_chroma_subsampling(uint32_t format) | |
5174 | { | |
5175 | switch (format) { | |
5176 | case DRM_FORMAT_YUV410: | |
5177 | case DRM_FORMAT_YVU410: | |
5178 | return 4; | |
5179 | case DRM_FORMAT_YUV420: | |
5180 | case DRM_FORMAT_YVU420: | |
5181 | case DRM_FORMAT_NV12: | |
5182 | case DRM_FORMAT_NV21: | |
5183 | return 2; | |
5184 | default: | |
5185 | return 1; | |
5186 | } | |
5187 | } | |
5188 | EXPORT_SYMBOL(drm_format_vert_chroma_subsampling); | |
87d24fc3 | 5189 | |
3c9855f6 VS |
5190 | /** |
5191 | * drm_rotation_simplify() - Try to simplify the rotation | |
5192 | * @rotation: Rotation to be simplified | |
5193 | * @supported_rotations: Supported rotations | |
5194 | * | |
5195 | * Attempt to simplify the rotation to a form that is supported. | |
5196 | * Eg. if the hardware supports everything except DRM_REFLECT_X | |
5197 | * one could call this function like this: | |
5198 | * | |
5199 | * drm_rotation_simplify(rotation, BIT(DRM_ROTATE_0) | | |
5200 | * BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_180) | | |
5201 | * BIT(DRM_ROTATE_270) | BIT(DRM_REFLECT_Y)); | |
5202 | * | |
5203 | * to eliminate the DRM_ROTATE_X flag. Depending on what kind of | |
5204 | * transforms the hardware supports, this function may not | |
5205 | * be able to produce a supported transform, so the caller should | |
5206 | * check the result afterwards. | |
5207 | */ | |
5208 | unsigned int drm_rotation_simplify(unsigned int rotation, | |
5209 | unsigned int supported_rotations) | |
5210 | { | |
5211 | if (rotation & ~supported_rotations) { | |
5212 | rotation ^= BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y); | |
5213 | rotation = (rotation & ~0xf) | BIT((ffs(rotation & 0xf) + 1) % 4); | |
5214 | } | |
5215 | ||
5216 | return rotation; | |
5217 | } | |
5218 | EXPORT_SYMBOL(drm_rotation_simplify); | |
5219 | ||
87d24fc3 LP |
5220 | /** |
5221 | * drm_mode_config_init - initialize DRM mode_configuration structure | |
5222 | * @dev: DRM device | |
5223 | * | |
5224 | * Initialize @dev's mode_config structure, used for tracking the graphics | |
5225 | * configuration of @dev. | |
5226 | * | |
5227 | * Since this initializes the modeset locks, no locking is possible. Which is no | |
5228 | * problem, since this should happen single threaded at init time. It is the | |
5229 | * driver's problem to ensure this guarantee. | |
5230 | * | |
5231 | */ | |
5232 | void drm_mode_config_init(struct drm_device *dev) | |
5233 | { | |
5234 | mutex_init(&dev->mode_config.mutex); | |
51fd371b | 5235 | drm_modeset_lock_init(&dev->mode_config.connection_mutex); |
87d24fc3 LP |
5236 | mutex_init(&dev->mode_config.idr_mutex); |
5237 | mutex_init(&dev->mode_config.fb_lock); | |
5238 | INIT_LIST_HEAD(&dev->mode_config.fb_list); | |
5239 | INIT_LIST_HEAD(&dev->mode_config.crtc_list); | |
5240 | INIT_LIST_HEAD(&dev->mode_config.connector_list); | |
3b336ec4 | 5241 | INIT_LIST_HEAD(&dev->mode_config.bridge_list); |
87d24fc3 LP |
5242 | INIT_LIST_HEAD(&dev->mode_config.encoder_list); |
5243 | INIT_LIST_HEAD(&dev->mode_config.property_list); | |
5244 | INIT_LIST_HEAD(&dev->mode_config.property_blob_list); | |
5245 | INIT_LIST_HEAD(&dev->mode_config.plane_list); | |
5246 | idr_init(&dev->mode_config.crtc_idr); | |
138f9ebb | 5247 | idr_init(&dev->mode_config.tile_idr); |
87d24fc3 LP |
5248 | |
5249 | drm_modeset_lock_all(dev); | |
5250 | drm_mode_create_standard_connector_properties(dev); | |
9922ab5a | 5251 | drm_mode_create_standard_plane_properties(dev); |
87d24fc3 LP |
5252 | drm_modeset_unlock_all(dev); |
5253 | ||
5254 | /* Just to be sure */ | |
5255 | dev->mode_config.num_fb = 0; | |
5256 | dev->mode_config.num_connector = 0; | |
5257 | dev->mode_config.num_crtc = 0; | |
5258 | dev->mode_config.num_encoder = 0; | |
e27dde3e MR |
5259 | dev->mode_config.num_overlay_plane = 0; |
5260 | dev->mode_config.num_total_plane = 0; | |
87d24fc3 LP |
5261 | } |
5262 | EXPORT_SYMBOL(drm_mode_config_init); | |
5263 | ||
5264 | /** | |
5265 | * drm_mode_config_cleanup - free up DRM mode_config info | |
5266 | * @dev: DRM device | |
5267 | * | |
5268 | * Free up all the connectors and CRTCs associated with this DRM device, then | |
5269 | * free up the framebuffers and associated buffer objects. | |
5270 | * | |
5271 | * Note that since this /should/ happen single-threaded at driver/device | |
5272 | * teardown time, no locking is required. It's the driver's job to ensure that | |
5273 | * this guarantee actually holds true. | |
5274 | * | |
5275 | * FIXME: cleanup any dangling user buffer objects too | |
5276 | */ | |
5277 | void drm_mode_config_cleanup(struct drm_device *dev) | |
5278 | { | |
5279 | struct drm_connector *connector, *ot; | |
5280 | struct drm_crtc *crtc, *ct; | |
5281 | struct drm_encoder *encoder, *enct; | |
3b336ec4 | 5282 | struct drm_bridge *bridge, *brt; |
87d24fc3 LP |
5283 | struct drm_framebuffer *fb, *fbt; |
5284 | struct drm_property *property, *pt; | |
5285 | struct drm_property_blob *blob, *bt; | |
5286 | struct drm_plane *plane, *plt; | |
5287 | ||
5288 | list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list, | |
5289 | head) { | |
5290 | encoder->funcs->destroy(encoder); | |
5291 | } | |
5292 | ||
3b336ec4 SP |
5293 | list_for_each_entry_safe(bridge, brt, |
5294 | &dev->mode_config.bridge_list, head) { | |
5295 | bridge->funcs->destroy(bridge); | |
5296 | } | |
5297 | ||
87d24fc3 LP |
5298 | list_for_each_entry_safe(connector, ot, |
5299 | &dev->mode_config.connector_list, head) { | |
5300 | connector->funcs->destroy(connector); | |
5301 | } | |
5302 | ||
5303 | list_for_each_entry_safe(property, pt, &dev->mode_config.property_list, | |
5304 | head) { | |
5305 | drm_property_destroy(dev, property); | |
5306 | } | |
5307 | ||
5308 | list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list, | |
5309 | head) { | |
5310 | drm_property_destroy_blob(dev, blob); | |
5311 | } | |
5312 | ||
5313 | /* | |
5314 | * Single-threaded teardown context, so it's not required to grab the | |
5315 | * fb_lock to protect against concurrent fb_list access. Contrary, it | |
5316 | * would actually deadlock with the drm_framebuffer_cleanup function. | |
5317 | * | |
5318 | * Also, if there are any framebuffers left, that's a driver leak now, | |
5319 | * so politely WARN about this. | |
5320 | */ | |
5321 | WARN_ON(!list_empty(&dev->mode_config.fb_list)); | |
5322 | list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) { | |
5323 | drm_framebuffer_remove(fb); | |
5324 | } | |
5325 | ||
5326 | list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list, | |
5327 | head) { | |
5328 | plane->funcs->destroy(plane); | |
5329 | } | |
5330 | ||
5331 | list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) { | |
5332 | crtc->funcs->destroy(crtc); | |
5333 | } | |
5334 | ||
138f9ebb | 5335 | idr_destroy(&dev->mode_config.tile_idr); |
87d24fc3 | 5336 | idr_destroy(&dev->mode_config.crtc_idr); |
51fd371b | 5337 | drm_modeset_lock_fini(&dev->mode_config.connection_mutex); |
87d24fc3 LP |
5338 | } |
5339 | EXPORT_SYMBOL(drm_mode_config_cleanup); | |
c1df5f3c VS |
5340 | |
5341 | struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev, | |
5342 | unsigned int supported_rotations) | |
5343 | { | |
5344 | static const struct drm_prop_enum_list props[] = { | |
5345 | { DRM_ROTATE_0, "rotate-0" }, | |
5346 | { DRM_ROTATE_90, "rotate-90" }, | |
5347 | { DRM_ROTATE_180, "rotate-180" }, | |
5348 | { DRM_ROTATE_270, "rotate-270" }, | |
5349 | { DRM_REFLECT_X, "reflect-x" }, | |
5350 | { DRM_REFLECT_Y, "reflect-y" }, | |
5351 | }; | |
5352 | ||
5353 | return drm_property_create_bitmask(dev, 0, "rotation", | |
5354 | props, ARRAY_SIZE(props), | |
5355 | supported_rotations); | |
5356 | } | |
5357 | EXPORT_SYMBOL(drm_mode_create_rotation_property); | |
138f9ebb DA |
5358 | |
5359 | /** | |
5360 | * DOC: Tile group | |
5361 | * | |
5362 | * Tile groups are used to represent tiled monitors with a unique | |
5363 | * integer identifier. Tiled monitors using DisplayID v1.3 have | |
5364 | * a unique 8-byte handle, we store this in a tile group, so we | |
5365 | * have a common identifier for all tiles in a monitor group. | |
5366 | */ | |
5367 | static void drm_tile_group_free(struct kref *kref) | |
5368 | { | |
5369 | struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount); | |
5370 | struct drm_device *dev = tg->dev; | |
5371 | mutex_lock(&dev->mode_config.idr_mutex); | |
5372 | idr_remove(&dev->mode_config.tile_idr, tg->id); | |
5373 | mutex_unlock(&dev->mode_config.idr_mutex); | |
5374 | kfree(tg); | |
5375 | } | |
5376 | ||
5377 | /** | |
5378 | * drm_mode_put_tile_group - drop a reference to a tile group. | |
5379 | * @dev: DRM device | |
5380 | * @tg: tile group to drop reference to. | |
5381 | * | |
5382 | * drop reference to tile group and free if 0. | |
5383 | */ | |
5384 | void drm_mode_put_tile_group(struct drm_device *dev, | |
5385 | struct drm_tile_group *tg) | |
5386 | { | |
5387 | kref_put(&tg->refcount, drm_tile_group_free); | |
5388 | } | |
5389 | ||
5390 | /** | |
5391 | * drm_mode_get_tile_group - get a reference to an existing tile group | |
5392 | * @dev: DRM device | |
5393 | * @topology: 8-bytes unique per monitor. | |
5394 | * | |
5395 | * Use the unique bytes to get a reference to an existing tile group. | |
5396 | * | |
5397 | * RETURNS: | |
5398 | * tile group or NULL if not found. | |
5399 | */ | |
5400 | struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev, | |
5401 | char topology[8]) | |
5402 | { | |
5403 | struct drm_tile_group *tg; | |
5404 | int id; | |
5405 | mutex_lock(&dev->mode_config.idr_mutex); | |
5406 | idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) { | |
5407 | if (!memcmp(tg->group_data, topology, 8)) { | |
5408 | if (!kref_get_unless_zero(&tg->refcount)) | |
5409 | tg = NULL; | |
5410 | mutex_unlock(&dev->mode_config.idr_mutex); | |
5411 | return tg; | |
5412 | } | |
5413 | } | |
5414 | mutex_unlock(&dev->mode_config.idr_mutex); | |
5415 | return NULL; | |
5416 | } | |
5417 | ||
5418 | /** | |
5419 | * drm_mode_create_tile_group - create a tile group from a displayid description | |
5420 | * @dev: DRM device | |
5421 | * @topology: 8-bytes unique per monitor. | |
5422 | * | |
5423 | * Create a tile group for the unique monitor, and get a unique | |
5424 | * identifier for the tile group. | |
5425 | * | |
5426 | * RETURNS: | |
5427 | * new tile group or error. | |
5428 | */ | |
5429 | struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev, | |
5430 | char topology[8]) | |
5431 | { | |
5432 | struct drm_tile_group *tg; | |
5433 | int ret; | |
5434 | ||
5435 | tg = kzalloc(sizeof(*tg), GFP_KERNEL); | |
5436 | if (!tg) | |
5437 | return ERR_PTR(-ENOMEM); | |
5438 | ||
5439 | kref_init(&tg->refcount); | |
5440 | memcpy(tg->group_data, topology, 8); | |
5441 | tg->dev = dev; | |
5442 | ||
5443 | mutex_lock(&dev->mode_config.idr_mutex); | |
5444 | ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL); | |
5445 | if (ret >= 0) { | |
5446 | tg->id = ret; | |
5447 | } else { | |
5448 | kfree(tg); | |
5449 | tg = ERR_PTR(ret); | |
5450 | } | |
5451 | ||
5452 | mutex_unlock(&dev->mode_config.idr_mutex); | |
5453 | return tg; | |
5454 | } |