Commit | Line | Data |
---|---|---|
46919a23 AP |
1 | /* |
2 | * uvc_configfs.c | |
3 | * | |
4 | * Configfs support for the uvc function. | |
5 | * | |
6 | * Copyright (c) 2014 Samsung Electronics Co., Ltd. | |
7 | * http://www.samsung.com | |
8 | * | |
9 | * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License version 2 as | |
13 | * published by the Free Software Foundation. | |
14 | */ | |
15 | #include "u_uvc.h" | |
16 | #include "uvc_configfs.h" | |
17 | ||
18 | #define UVCG_STREAMING_CONTROL_SIZE 1 | |
19 | ||
76e0da34 CH |
20 | #define UVC_ATTR(prefix, cname, aname) \ |
21 | static struct configfs_attribute prefix##attr_##cname = { \ | |
22 | .ca_name = __stringify(aname), \ | |
27681abc | 23 | .ca_mode = S_IRUGO | S_IWUGO, \ |
76e0da34 CH |
24 | .ca_owner = THIS_MODULE, \ |
25 | .show = prefix##cname##_show, \ | |
26 | .store = prefix##cname##_store, \ | |
27 | } | |
28 | ||
29 | #define UVC_ATTR_RO(prefix, cname, aname) \ | |
30 | static struct configfs_attribute prefix##attr_##cname = { \ | |
31 | .ca_name = __stringify(aname), \ | |
32 | .ca_mode = S_IRUGO, \ | |
33 | .ca_owner = THIS_MODULE, \ | |
34 | .show = prefix##cname##_show, \ | |
46919a23 AP |
35 | } |
36 | ||
37 | static inline struct f_uvc_opts *to_f_uvc_opts(struct config_item *item); | |
38 | ||
39 | /* control/header/<NAME> */ | |
40 | DECLARE_UVC_HEADER_DESCRIPTOR(1); | |
41 | ||
42 | struct uvcg_control_header { | |
43 | struct config_item item; | |
44 | struct UVC_HEADER_DESCRIPTOR(1) desc; | |
45 | unsigned linked; | |
46 | }; | |
47 | ||
f093a2d4 | 48 | static struct uvcg_control_header *to_uvcg_control_header(struct config_item *item) |
46919a23 AP |
49 | { |
50 | return container_of(item, struct uvcg_control_header, item); | |
51 | } | |
52 | ||
46919a23 AP |
53 | #define UVCG_CTRL_HDR_ATTR(cname, aname, conv, str2u, uxx, vnoc, limit) \ |
54 | static ssize_t uvcg_control_header_##cname##_show( \ | |
76e0da34 | 55 | struct config_item *item, char *page) \ |
46919a23 | 56 | { \ |
76e0da34 | 57 | struct uvcg_control_header *ch = to_uvcg_control_header(item); \ |
46919a23 AP |
58 | struct f_uvc_opts *opts; \ |
59 | struct config_item *opts_item; \ | |
60 | struct mutex *su_mutex = &ch->item.ci_group->cg_subsys->su_mutex;\ | |
61 | int result; \ | |
62 | \ | |
63 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
64 | \ | |
65 | opts_item = ch->item.ci_parent->ci_parent->ci_parent; \ | |
66 | opts = to_f_uvc_opts(opts_item); \ | |
67 | \ | |
68 | mutex_lock(&opts->lock); \ | |
69 | result = sprintf(page, "%d\n", conv(ch->desc.aname)); \ | |
70 | mutex_unlock(&opts->lock); \ | |
71 | \ | |
72 | mutex_unlock(su_mutex); \ | |
73 | return result; \ | |
74 | } \ | |
75 | \ | |
76 | static ssize_t \ | |
76e0da34 | 77 | uvcg_control_header_##cname##_store(struct config_item *item, \ |
46919a23 AP |
78 | const char *page, size_t len) \ |
79 | { \ | |
76e0da34 | 80 | struct uvcg_control_header *ch = to_uvcg_control_header(item); \ |
46919a23 AP |
81 | struct f_uvc_opts *opts; \ |
82 | struct config_item *opts_item; \ | |
83 | struct mutex *su_mutex = &ch->item.ci_group->cg_subsys->su_mutex;\ | |
84 | int ret; \ | |
85 | uxx num; \ | |
86 | \ | |
87 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
88 | \ | |
89 | opts_item = ch->item.ci_parent->ci_parent->ci_parent; \ | |
90 | opts = to_f_uvc_opts(opts_item); \ | |
91 | \ | |
92 | mutex_lock(&opts->lock); \ | |
93 | if (ch->linked || opts->refcnt) { \ | |
94 | ret = -EBUSY; \ | |
95 | goto end; \ | |
96 | } \ | |
97 | \ | |
98 | ret = str2u(page, 0, &num); \ | |
99 | if (ret) \ | |
100 | goto end; \ | |
101 | \ | |
102 | if (num > limit) { \ | |
103 | ret = -EINVAL; \ | |
104 | goto end; \ | |
105 | } \ | |
106 | ch->desc.aname = vnoc(num); \ | |
107 | ret = len; \ | |
108 | end: \ | |
109 | mutex_unlock(&opts->lock); \ | |
110 | mutex_unlock(su_mutex); \ | |
111 | return ret; \ | |
112 | } \ | |
113 | \ | |
76e0da34 | 114 | UVC_ATTR(uvcg_control_header_, cname, aname) |
46919a23 AP |
115 | |
116 | UVCG_CTRL_HDR_ATTR(bcd_uvc, bcdUVC, le16_to_cpu, kstrtou16, u16, cpu_to_le16, | |
117 | 0xffff); | |
118 | ||
119 | UVCG_CTRL_HDR_ATTR(dw_clock_frequency, dwClockFrequency, le32_to_cpu, kstrtou32, | |
120 | u32, cpu_to_le32, 0x7fffffff); | |
121 | ||
122 | #undef UVCG_CTRL_HDR_ATTR | |
123 | ||
124 | static struct configfs_attribute *uvcg_control_header_attrs[] = { | |
76e0da34 CH |
125 | &uvcg_control_header_attr_bcd_uvc, |
126 | &uvcg_control_header_attr_dw_clock_frequency, | |
46919a23 AP |
127 | NULL, |
128 | }; | |
129 | ||
f093a2d4 | 130 | static struct config_item_type uvcg_control_header_type = { |
46919a23 AP |
131 | .ct_attrs = uvcg_control_header_attrs, |
132 | .ct_owner = THIS_MODULE, | |
133 | }; | |
134 | ||
135 | static struct config_item *uvcg_control_header_make(struct config_group *group, | |
136 | const char *name) | |
137 | { | |
138 | struct uvcg_control_header *h; | |
139 | ||
140 | h = kzalloc(sizeof(*h), GFP_KERNEL); | |
141 | if (!h) | |
df90f838 | 142 | return ERR_PTR(-ENOMEM); |
46919a23 AP |
143 | |
144 | h->desc.bLength = UVC_DT_HEADER_SIZE(1); | |
145 | h->desc.bDescriptorType = USB_DT_CS_INTERFACE; | |
146 | h->desc.bDescriptorSubType = UVC_VC_HEADER; | |
147 | h->desc.bcdUVC = cpu_to_le16(0x0100); | |
148 | h->desc.dwClockFrequency = cpu_to_le32(48000000); | |
149 | ||
150 | config_item_init_type_name(&h->item, name, &uvcg_control_header_type); | |
151 | ||
152 | return &h->item; | |
153 | } | |
154 | ||
f093a2d4 | 155 | static void uvcg_control_header_drop(struct config_group *group, |
46919a23 AP |
156 | struct config_item *item) |
157 | { | |
158 | struct uvcg_control_header *h = to_uvcg_control_header(item); | |
159 | ||
160 | kfree(h); | |
161 | } | |
162 | ||
163 | /* control/header */ | |
164 | static struct uvcg_control_header_grp { | |
165 | struct config_group group; | |
166 | } uvcg_control_header_grp; | |
167 | ||
168 | static struct configfs_group_operations uvcg_control_header_grp_ops = { | |
169 | .make_item = uvcg_control_header_make, | |
170 | .drop_item = uvcg_control_header_drop, | |
171 | }; | |
172 | ||
173 | static struct config_item_type uvcg_control_header_grp_type = { | |
174 | .ct_group_ops = &uvcg_control_header_grp_ops, | |
175 | .ct_owner = THIS_MODULE, | |
176 | }; | |
177 | ||
178 | /* control/processing/default */ | |
179 | static struct uvcg_default_processing { | |
180 | struct config_group group; | |
181 | } uvcg_default_processing; | |
182 | ||
183 | static inline struct uvcg_default_processing | |
184 | *to_uvcg_default_processing(struct config_item *item) | |
185 | { | |
186 | return container_of(to_config_group(item), | |
187 | struct uvcg_default_processing, group); | |
188 | } | |
189 | ||
46919a23 AP |
190 | #define UVCG_DEFAULT_PROCESSING_ATTR(cname, aname, conv) \ |
191 | static ssize_t uvcg_default_processing_##cname##_show( \ | |
76e0da34 | 192 | struct config_item *item, char *page) \ |
46919a23 | 193 | { \ |
76e0da34 | 194 | struct uvcg_default_processing *dp = to_uvcg_default_processing(item); \ |
46919a23 AP |
195 | struct f_uvc_opts *opts; \ |
196 | struct config_item *opts_item; \ | |
197 | struct mutex *su_mutex = &dp->group.cg_subsys->su_mutex; \ | |
198 | struct uvc_processing_unit_descriptor *pd; \ | |
199 | int result; \ | |
200 | \ | |
201 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
202 | \ | |
203 | opts_item = dp->group.cg_item.ci_parent->ci_parent->ci_parent; \ | |
204 | opts = to_f_uvc_opts(opts_item); \ | |
205 | pd = &opts->uvc_processing; \ | |
206 | \ | |
207 | mutex_lock(&opts->lock); \ | |
208 | result = sprintf(page, "%d\n", conv(pd->aname)); \ | |
209 | mutex_unlock(&opts->lock); \ | |
210 | \ | |
211 | mutex_unlock(su_mutex); \ | |
212 | return result; \ | |
213 | } \ | |
214 | \ | |
76e0da34 | 215 | UVC_ATTR_RO(uvcg_default_processing_, cname, aname) |
46919a23 AP |
216 | |
217 | #define identity_conv(x) (x) | |
218 | ||
219 | UVCG_DEFAULT_PROCESSING_ATTR(b_unit_id, bUnitID, identity_conv); | |
220 | UVCG_DEFAULT_PROCESSING_ATTR(b_source_id, bSourceID, identity_conv); | |
221 | UVCG_DEFAULT_PROCESSING_ATTR(w_max_multiplier, wMaxMultiplier, le16_to_cpu); | |
222 | UVCG_DEFAULT_PROCESSING_ATTR(i_processing, iProcessing, identity_conv); | |
223 | ||
224 | #undef identity_conv | |
225 | ||
226 | #undef UVCG_DEFAULT_PROCESSING_ATTR | |
227 | ||
228 | static ssize_t uvcg_default_processing_bm_controls_show( | |
76e0da34 | 229 | struct config_item *item, char *page) |
46919a23 | 230 | { |
76e0da34 | 231 | struct uvcg_default_processing *dp = to_uvcg_default_processing(item); |
46919a23 AP |
232 | struct f_uvc_opts *opts; |
233 | struct config_item *opts_item; | |
234 | struct mutex *su_mutex = &dp->group.cg_subsys->su_mutex; | |
235 | struct uvc_processing_unit_descriptor *pd; | |
236 | int result, i; | |
237 | char *pg = page; | |
238 | ||
239 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
240 | ||
241 | opts_item = dp->group.cg_item.ci_parent->ci_parent->ci_parent; | |
242 | opts = to_f_uvc_opts(opts_item); | |
243 | pd = &opts->uvc_processing; | |
244 | ||
245 | mutex_lock(&opts->lock); | |
246 | for (result = 0, i = 0; i < pd->bControlSize; ++i) { | |
247 | result += sprintf(pg, "%d\n", pd->bmControls[i]); | |
248 | pg = page + result; | |
249 | } | |
250 | mutex_unlock(&opts->lock); | |
251 | ||
252 | mutex_unlock(su_mutex); | |
253 | ||
254 | return result; | |
255 | } | |
256 | ||
76e0da34 | 257 | UVC_ATTR_RO(uvcg_default_processing_, bm_controls, bmControls); |
46919a23 AP |
258 | |
259 | static struct configfs_attribute *uvcg_default_processing_attrs[] = { | |
76e0da34 CH |
260 | &uvcg_default_processing_attr_b_unit_id, |
261 | &uvcg_default_processing_attr_b_source_id, | |
262 | &uvcg_default_processing_attr_w_max_multiplier, | |
263 | &uvcg_default_processing_attr_bm_controls, | |
264 | &uvcg_default_processing_attr_i_processing, | |
46919a23 AP |
265 | NULL, |
266 | }; | |
267 | ||
268 | static struct config_item_type uvcg_default_processing_type = { | |
46919a23 AP |
269 | .ct_attrs = uvcg_default_processing_attrs, |
270 | .ct_owner = THIS_MODULE, | |
271 | }; | |
272 | ||
273 | /* struct uvcg_processing {}; */ | |
274 | ||
275 | static struct config_group *uvcg_processing_default_groups[] = { | |
276 | &uvcg_default_processing.group, | |
277 | NULL, | |
278 | }; | |
279 | ||
280 | /* control/processing */ | |
281 | static struct uvcg_processing_grp { | |
282 | struct config_group group; | |
283 | } uvcg_processing_grp; | |
284 | ||
285 | static struct config_item_type uvcg_processing_grp_type = { | |
286 | .ct_owner = THIS_MODULE, | |
287 | }; | |
288 | ||
289 | /* control/terminal/camera/default */ | |
290 | static struct uvcg_default_camera { | |
291 | struct config_group group; | |
292 | } uvcg_default_camera; | |
293 | ||
294 | static inline struct uvcg_default_camera | |
295 | *to_uvcg_default_camera(struct config_item *item) | |
296 | { | |
297 | return container_of(to_config_group(item), | |
298 | struct uvcg_default_camera, group); | |
299 | } | |
300 | ||
46919a23 AP |
301 | #define UVCG_DEFAULT_CAMERA_ATTR(cname, aname, conv) \ |
302 | static ssize_t uvcg_default_camera_##cname##_show( \ | |
76e0da34 | 303 | struct config_item *item, char *page) \ |
46919a23 | 304 | { \ |
76e0da34 | 305 | struct uvcg_default_camera *dc = to_uvcg_default_camera(item); \ |
46919a23 AP |
306 | struct f_uvc_opts *opts; \ |
307 | struct config_item *opts_item; \ | |
308 | struct mutex *su_mutex = &dc->group.cg_subsys->su_mutex; \ | |
309 | struct uvc_camera_terminal_descriptor *cd; \ | |
310 | int result; \ | |
311 | \ | |
312 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
313 | \ | |
314 | opts_item = dc->group.cg_item.ci_parent->ci_parent->ci_parent-> \ | |
315 | ci_parent; \ | |
316 | opts = to_f_uvc_opts(opts_item); \ | |
317 | cd = &opts->uvc_camera_terminal; \ | |
318 | \ | |
319 | mutex_lock(&opts->lock); \ | |
320 | result = sprintf(page, "%d\n", conv(cd->aname)); \ | |
321 | mutex_unlock(&opts->lock); \ | |
322 | \ | |
323 | mutex_unlock(su_mutex); \ | |
324 | \ | |
325 | return result; \ | |
326 | } \ | |
327 | \ | |
76e0da34 | 328 | UVC_ATTR_RO(uvcg_default_camera_, cname, aname) |
46919a23 AP |
329 | |
330 | #define identity_conv(x) (x) | |
331 | ||
332 | UVCG_DEFAULT_CAMERA_ATTR(b_terminal_id, bTerminalID, identity_conv); | |
333 | UVCG_DEFAULT_CAMERA_ATTR(w_terminal_type, wTerminalType, le16_to_cpu); | |
334 | UVCG_DEFAULT_CAMERA_ATTR(b_assoc_terminal, bAssocTerminal, identity_conv); | |
335 | UVCG_DEFAULT_CAMERA_ATTR(i_terminal, iTerminal, identity_conv); | |
336 | UVCG_DEFAULT_CAMERA_ATTR(w_objective_focal_length_min, wObjectiveFocalLengthMin, | |
337 | le16_to_cpu); | |
338 | UVCG_DEFAULT_CAMERA_ATTR(w_objective_focal_length_max, wObjectiveFocalLengthMax, | |
339 | le16_to_cpu); | |
340 | UVCG_DEFAULT_CAMERA_ATTR(w_ocular_focal_length, wOcularFocalLength, | |
341 | le16_to_cpu); | |
342 | ||
343 | #undef identity_conv | |
344 | ||
345 | #undef UVCG_DEFAULT_CAMERA_ATTR | |
346 | ||
347 | static ssize_t uvcg_default_camera_bm_controls_show( | |
76e0da34 | 348 | struct config_item *item, char *page) |
46919a23 | 349 | { |
76e0da34 | 350 | struct uvcg_default_camera *dc = to_uvcg_default_camera(item); |
46919a23 AP |
351 | struct f_uvc_opts *opts; |
352 | struct config_item *opts_item; | |
353 | struct mutex *su_mutex = &dc->group.cg_subsys->su_mutex; | |
354 | struct uvc_camera_terminal_descriptor *cd; | |
355 | int result, i; | |
356 | char *pg = page; | |
357 | ||
358 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
359 | ||
360 | opts_item = dc->group.cg_item.ci_parent->ci_parent->ci_parent-> | |
361 | ci_parent; | |
362 | opts = to_f_uvc_opts(opts_item); | |
363 | cd = &opts->uvc_camera_terminal; | |
364 | ||
365 | mutex_lock(&opts->lock); | |
366 | for (result = 0, i = 0; i < cd->bControlSize; ++i) { | |
367 | result += sprintf(pg, "%d\n", cd->bmControls[i]); | |
368 | pg = page + result; | |
369 | } | |
370 | mutex_unlock(&opts->lock); | |
371 | ||
372 | mutex_unlock(su_mutex); | |
373 | return result; | |
374 | } | |
375 | ||
76e0da34 | 376 | UVC_ATTR_RO(uvcg_default_camera_, bm_controls, bmControls); |
46919a23 AP |
377 | |
378 | static struct configfs_attribute *uvcg_default_camera_attrs[] = { | |
76e0da34 CH |
379 | &uvcg_default_camera_attr_b_terminal_id, |
380 | &uvcg_default_camera_attr_w_terminal_type, | |
381 | &uvcg_default_camera_attr_b_assoc_terminal, | |
382 | &uvcg_default_camera_attr_i_terminal, | |
383 | &uvcg_default_camera_attr_w_objective_focal_length_min, | |
384 | &uvcg_default_camera_attr_w_objective_focal_length_max, | |
385 | &uvcg_default_camera_attr_w_ocular_focal_length, | |
386 | &uvcg_default_camera_attr_bm_controls, | |
46919a23 AP |
387 | NULL, |
388 | }; | |
389 | ||
390 | static struct config_item_type uvcg_default_camera_type = { | |
46919a23 AP |
391 | .ct_attrs = uvcg_default_camera_attrs, |
392 | .ct_owner = THIS_MODULE, | |
393 | }; | |
394 | ||
395 | /* struct uvcg_camera {}; */ | |
396 | ||
397 | static struct config_group *uvcg_camera_default_groups[] = { | |
398 | &uvcg_default_camera.group, | |
399 | NULL, | |
400 | }; | |
401 | ||
402 | /* control/terminal/camera */ | |
403 | static struct uvcg_camera_grp { | |
404 | struct config_group group; | |
405 | } uvcg_camera_grp; | |
406 | ||
407 | static struct config_item_type uvcg_camera_grp_type = { | |
408 | .ct_owner = THIS_MODULE, | |
409 | }; | |
410 | ||
411 | /* control/terminal/output/default */ | |
412 | static struct uvcg_default_output { | |
413 | struct config_group group; | |
414 | } uvcg_default_output; | |
415 | ||
416 | static inline struct uvcg_default_output | |
417 | *to_uvcg_default_output(struct config_item *item) | |
418 | { | |
419 | return container_of(to_config_group(item), | |
420 | struct uvcg_default_output, group); | |
421 | } | |
422 | ||
46919a23 AP |
423 | #define UVCG_DEFAULT_OUTPUT_ATTR(cname, aname, conv) \ |
424 | static ssize_t uvcg_default_output_##cname##_show( \ | |
76e0da34 | 425 | struct config_item *item, char *page) \ |
46919a23 | 426 | { \ |
76e0da34 | 427 | struct uvcg_default_output *dout = to_uvcg_default_output(item); \ |
46919a23 AP |
428 | struct f_uvc_opts *opts; \ |
429 | struct config_item *opts_item; \ | |
430 | struct mutex *su_mutex = &dout->group.cg_subsys->su_mutex; \ | |
431 | struct uvc_output_terminal_descriptor *cd; \ | |
432 | int result; \ | |
433 | \ | |
434 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
435 | \ | |
436 | opts_item = dout->group.cg_item.ci_parent->ci_parent-> \ | |
437 | ci_parent->ci_parent; \ | |
438 | opts = to_f_uvc_opts(opts_item); \ | |
439 | cd = &opts->uvc_output_terminal; \ | |
440 | \ | |
441 | mutex_lock(&opts->lock); \ | |
442 | result = sprintf(page, "%d\n", conv(cd->aname)); \ | |
443 | mutex_unlock(&opts->lock); \ | |
444 | \ | |
445 | mutex_unlock(su_mutex); \ | |
446 | \ | |
447 | return result; \ | |
448 | } \ | |
449 | \ | |
76e0da34 | 450 | UVC_ATTR_RO(uvcg_default_output_, cname, aname) |
46919a23 AP |
451 | |
452 | #define identity_conv(x) (x) | |
453 | ||
454 | UVCG_DEFAULT_OUTPUT_ATTR(b_terminal_id, bTerminalID, identity_conv); | |
455 | UVCG_DEFAULT_OUTPUT_ATTR(w_terminal_type, wTerminalType, le16_to_cpu); | |
456 | UVCG_DEFAULT_OUTPUT_ATTR(b_assoc_terminal, bAssocTerminal, identity_conv); | |
457 | UVCG_DEFAULT_OUTPUT_ATTR(b_source_id, bSourceID, identity_conv); | |
458 | UVCG_DEFAULT_OUTPUT_ATTR(i_terminal, iTerminal, identity_conv); | |
459 | ||
460 | #undef identity_conv | |
461 | ||
462 | #undef UVCG_DEFAULT_OUTPUT_ATTR | |
463 | ||
464 | static struct configfs_attribute *uvcg_default_output_attrs[] = { | |
76e0da34 CH |
465 | &uvcg_default_output_attr_b_terminal_id, |
466 | &uvcg_default_output_attr_w_terminal_type, | |
467 | &uvcg_default_output_attr_b_assoc_terminal, | |
468 | &uvcg_default_output_attr_b_source_id, | |
469 | &uvcg_default_output_attr_i_terminal, | |
46919a23 AP |
470 | NULL, |
471 | }; | |
472 | ||
473 | static struct config_item_type uvcg_default_output_type = { | |
46919a23 AP |
474 | .ct_attrs = uvcg_default_output_attrs, |
475 | .ct_owner = THIS_MODULE, | |
476 | }; | |
477 | ||
478 | /* struct uvcg_output {}; */ | |
479 | ||
480 | static struct config_group *uvcg_output_default_groups[] = { | |
481 | &uvcg_default_output.group, | |
482 | NULL, | |
483 | }; | |
484 | ||
485 | /* control/terminal/output */ | |
486 | static struct uvcg_output_grp { | |
487 | struct config_group group; | |
488 | } uvcg_output_grp; | |
489 | ||
490 | static struct config_item_type uvcg_output_grp_type = { | |
491 | .ct_owner = THIS_MODULE, | |
492 | }; | |
493 | ||
494 | static struct config_group *uvcg_terminal_default_groups[] = { | |
495 | &uvcg_camera_grp.group, | |
496 | &uvcg_output_grp.group, | |
497 | NULL, | |
498 | }; | |
499 | ||
500 | /* control/terminal */ | |
501 | static struct uvcg_terminal_grp { | |
502 | struct config_group group; | |
503 | } uvcg_terminal_grp; | |
504 | ||
505 | static struct config_item_type uvcg_terminal_grp_type = { | |
506 | .ct_owner = THIS_MODULE, | |
507 | }; | |
508 | ||
509 | /* control/class/{fs} */ | |
510 | static struct uvcg_control_class { | |
511 | struct config_group group; | |
512 | } uvcg_control_class_fs, uvcg_control_class_ss; | |
513 | ||
514 | ||
515 | static inline struct uvc_descriptor_header | |
516 | **uvcg_get_ctl_class_arr(struct config_item *i, struct f_uvc_opts *o) | |
517 | { | |
518 | struct uvcg_control_class *cl = container_of(to_config_group(i), | |
519 | struct uvcg_control_class, group); | |
520 | ||
521 | if (cl == &uvcg_control_class_fs) | |
522 | return o->uvc_fs_control_cls; | |
523 | ||
524 | if (cl == &uvcg_control_class_ss) | |
525 | return o->uvc_ss_control_cls; | |
526 | ||
527 | return NULL; | |
528 | } | |
529 | ||
530 | static int uvcg_control_class_allow_link(struct config_item *src, | |
531 | struct config_item *target) | |
532 | { | |
533 | struct config_item *control, *header; | |
534 | struct f_uvc_opts *opts; | |
535 | struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex; | |
536 | struct uvc_descriptor_header **class_array; | |
537 | struct uvcg_control_header *target_hdr; | |
538 | int ret = -EINVAL; | |
539 | ||
540 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
541 | ||
542 | control = src->ci_parent->ci_parent; | |
543 | header = config_group_find_item(to_config_group(control), "header"); | |
544 | if (!header || target->ci_parent != header) | |
545 | goto out; | |
546 | ||
547 | opts = to_f_uvc_opts(control->ci_parent); | |
548 | ||
549 | mutex_lock(&opts->lock); | |
550 | ||
551 | class_array = uvcg_get_ctl_class_arr(src, opts); | |
552 | if (!class_array) | |
553 | goto unlock; | |
554 | if (opts->refcnt || class_array[0]) { | |
555 | ret = -EBUSY; | |
556 | goto unlock; | |
557 | } | |
558 | ||
559 | target_hdr = to_uvcg_control_header(target); | |
560 | ++target_hdr->linked; | |
561 | class_array[0] = (struct uvc_descriptor_header *)&target_hdr->desc; | |
562 | ret = 0; | |
563 | ||
564 | unlock: | |
565 | mutex_unlock(&opts->lock); | |
566 | out: | |
567 | mutex_unlock(su_mutex); | |
568 | return ret; | |
569 | } | |
570 | ||
571 | static int uvcg_control_class_drop_link(struct config_item *src, | |
572 | struct config_item *target) | |
573 | { | |
574 | struct config_item *control, *header; | |
575 | struct f_uvc_opts *opts; | |
576 | struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex; | |
577 | struct uvc_descriptor_header **class_array; | |
578 | struct uvcg_control_header *target_hdr; | |
579 | int ret = -EINVAL; | |
580 | ||
581 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
582 | ||
583 | control = src->ci_parent->ci_parent; | |
584 | header = config_group_find_item(to_config_group(control), "header"); | |
585 | if (!header || target->ci_parent != header) | |
586 | goto out; | |
587 | ||
588 | opts = to_f_uvc_opts(control->ci_parent); | |
589 | ||
590 | mutex_lock(&opts->lock); | |
591 | ||
592 | class_array = uvcg_get_ctl_class_arr(src, opts); | |
593 | if (!class_array) | |
594 | goto unlock; | |
595 | if (opts->refcnt) { | |
596 | ret = -EBUSY; | |
597 | goto unlock; | |
598 | } | |
599 | ||
600 | target_hdr = to_uvcg_control_header(target); | |
601 | --target_hdr->linked; | |
602 | class_array[0] = NULL; | |
603 | ret = 0; | |
604 | ||
605 | unlock: | |
606 | mutex_unlock(&opts->lock); | |
607 | out: | |
608 | mutex_unlock(su_mutex); | |
609 | return ret; | |
610 | } | |
611 | ||
612 | static struct configfs_item_operations uvcg_control_class_item_ops = { | |
613 | .allow_link = uvcg_control_class_allow_link, | |
614 | .drop_link = uvcg_control_class_drop_link, | |
615 | }; | |
616 | ||
617 | static struct config_item_type uvcg_control_class_type = { | |
618 | .ct_item_ops = &uvcg_control_class_item_ops, | |
619 | .ct_owner = THIS_MODULE, | |
620 | }; | |
621 | ||
622 | static struct config_group *uvcg_control_class_default_groups[] = { | |
623 | &uvcg_control_class_fs.group, | |
624 | &uvcg_control_class_ss.group, | |
625 | NULL, | |
626 | }; | |
627 | ||
628 | /* control/class */ | |
629 | static struct uvcg_control_class_grp { | |
630 | struct config_group group; | |
631 | } uvcg_control_class_grp; | |
632 | ||
633 | static struct config_item_type uvcg_control_class_grp_type = { | |
634 | .ct_owner = THIS_MODULE, | |
635 | }; | |
636 | ||
637 | static struct config_group *uvcg_control_default_groups[] = { | |
638 | &uvcg_control_header_grp.group, | |
639 | &uvcg_processing_grp.group, | |
640 | &uvcg_terminal_grp.group, | |
641 | &uvcg_control_class_grp.group, | |
642 | NULL, | |
643 | }; | |
644 | ||
645 | /* control */ | |
646 | static struct uvcg_control_grp { | |
647 | struct config_group group; | |
648 | } uvcg_control_grp; | |
649 | ||
650 | static struct config_item_type uvcg_control_grp_type = { | |
651 | .ct_owner = THIS_MODULE, | |
652 | }; | |
653 | ||
654 | /* streaming/uncompressed */ | |
655 | static struct uvcg_uncompressed_grp { | |
656 | struct config_group group; | |
657 | } uvcg_uncompressed_grp; | |
658 | ||
659 | /* streaming/mjpeg */ | |
660 | static struct uvcg_mjpeg_grp { | |
661 | struct config_group group; | |
662 | } uvcg_mjpeg_grp; | |
663 | ||
664 | static struct config_item *fmt_parent[] = { | |
665 | &uvcg_uncompressed_grp.group.cg_item, | |
666 | &uvcg_mjpeg_grp.group.cg_item, | |
667 | }; | |
668 | ||
669 | enum uvcg_format_type { | |
670 | UVCG_UNCOMPRESSED = 0, | |
671 | UVCG_MJPEG, | |
672 | }; | |
673 | ||
674 | struct uvcg_format { | |
675 | struct config_group group; | |
676 | enum uvcg_format_type type; | |
677 | unsigned linked; | |
678 | unsigned num_frames; | |
679 | __u8 bmaControls[UVCG_STREAMING_CONTROL_SIZE]; | |
680 | }; | |
681 | ||
f093a2d4 | 682 | static struct uvcg_format *to_uvcg_format(struct config_item *item) |
46919a23 AP |
683 | { |
684 | return container_of(to_config_group(item), struct uvcg_format, group); | |
685 | } | |
686 | ||
687 | static ssize_t uvcg_format_bma_controls_show(struct uvcg_format *f, char *page) | |
688 | { | |
689 | struct f_uvc_opts *opts; | |
690 | struct config_item *opts_item; | |
691 | struct mutex *su_mutex = &f->group.cg_subsys->su_mutex; | |
692 | int result, i; | |
693 | char *pg = page; | |
694 | ||
695 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
696 | ||
697 | opts_item = f->group.cg_item.ci_parent->ci_parent->ci_parent; | |
698 | opts = to_f_uvc_opts(opts_item); | |
699 | ||
700 | mutex_lock(&opts->lock); | |
701 | result = sprintf(pg, "0x"); | |
702 | pg += result; | |
703 | for (i = 0; i < UVCG_STREAMING_CONTROL_SIZE; ++i) { | |
704 | result += sprintf(pg, "%x\n", f->bmaControls[i]); | |
705 | pg = page + result; | |
706 | } | |
707 | mutex_unlock(&opts->lock); | |
708 | ||
709 | mutex_unlock(su_mutex); | |
710 | return result; | |
711 | } | |
712 | ||
713 | static ssize_t uvcg_format_bma_controls_store(struct uvcg_format *ch, | |
714 | const char *page, size_t len) | |
715 | { | |
716 | struct f_uvc_opts *opts; | |
717 | struct config_item *opts_item; | |
718 | struct mutex *su_mutex = &ch->group.cg_subsys->su_mutex; | |
719 | int ret = -EINVAL; | |
720 | ||
721 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
722 | ||
723 | opts_item = ch->group.cg_item.ci_parent->ci_parent->ci_parent; | |
724 | opts = to_f_uvc_opts(opts_item); | |
725 | ||
726 | mutex_lock(&opts->lock); | |
727 | if (ch->linked || opts->refcnt) { | |
728 | ret = -EBUSY; | |
729 | goto end; | |
730 | } | |
731 | ||
732 | if (len < 4 || *page != '0' || | |
733 | (*(page + 1) != 'x' && *(page + 1) != 'X')) | |
734 | goto end; | |
735 | ret = hex2bin(ch->bmaControls, page + 2, 1); | |
736 | if (ret < 0) | |
737 | goto end; | |
738 | ret = len; | |
739 | end: | |
740 | mutex_unlock(&opts->lock); | |
741 | mutex_unlock(su_mutex); | |
742 | return ret; | |
743 | } | |
744 | ||
745 | struct uvcg_format_ptr { | |
746 | struct uvcg_format *fmt; | |
747 | struct list_head entry; | |
748 | }; | |
749 | ||
750 | /* streaming/header/<NAME> */ | |
751 | struct uvcg_streaming_header { | |
752 | struct config_item item; | |
753 | struct uvc_input_header_descriptor desc; | |
754 | unsigned linked; | |
755 | struct list_head formats; | |
756 | unsigned num_fmt; | |
757 | }; | |
758 | ||
f093a2d4 | 759 | static struct uvcg_streaming_header *to_uvcg_streaming_header(struct config_item *item) |
46919a23 AP |
760 | { |
761 | return container_of(item, struct uvcg_streaming_header, item); | |
762 | } | |
763 | ||
46919a23 AP |
764 | static int uvcg_streaming_header_allow_link(struct config_item *src, |
765 | struct config_item *target) | |
766 | { | |
767 | struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex; | |
768 | struct config_item *opts_item; | |
769 | struct f_uvc_opts *opts; | |
770 | struct uvcg_streaming_header *src_hdr; | |
771 | struct uvcg_format *target_fmt = NULL; | |
772 | struct uvcg_format_ptr *format_ptr; | |
773 | int i, ret = -EINVAL; | |
774 | ||
775 | src_hdr = to_uvcg_streaming_header(src); | |
776 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
777 | ||
778 | opts_item = src->ci_parent->ci_parent->ci_parent; | |
779 | opts = to_f_uvc_opts(opts_item); | |
780 | ||
781 | mutex_lock(&opts->lock); | |
782 | ||
783 | if (src_hdr->linked) { | |
784 | ret = -EBUSY; | |
785 | goto out; | |
786 | } | |
787 | ||
788 | for (i = 0; i < ARRAY_SIZE(fmt_parent); ++i) | |
789 | if (target->ci_parent == fmt_parent[i]) | |
790 | break; | |
791 | if (i == ARRAY_SIZE(fmt_parent)) | |
792 | goto out; | |
793 | ||
794 | target_fmt = container_of(to_config_group(target), struct uvcg_format, | |
795 | group); | |
796 | if (!target_fmt) | |
797 | goto out; | |
798 | ||
799 | format_ptr = kzalloc(sizeof(*format_ptr), GFP_KERNEL); | |
800 | if (!format_ptr) { | |
df90f838 | 801 | ret = -ENOMEM; |
46919a23 AP |
802 | goto out; |
803 | } | |
804 | ret = 0; | |
805 | format_ptr->fmt = target_fmt; | |
806 | list_add_tail(&format_ptr->entry, &src_hdr->formats); | |
807 | ++src_hdr->num_fmt; | |
808 | ||
809 | out: | |
810 | mutex_unlock(&opts->lock); | |
811 | mutex_unlock(su_mutex); | |
812 | return ret; | |
813 | } | |
814 | ||
815 | static int uvcg_streaming_header_drop_link(struct config_item *src, | |
816 | struct config_item *target) | |
817 | { | |
818 | struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex; | |
819 | struct config_item *opts_item; | |
820 | struct f_uvc_opts *opts; | |
821 | struct uvcg_streaming_header *src_hdr; | |
822 | struct uvcg_format *target_fmt = NULL; | |
823 | struct uvcg_format_ptr *format_ptr, *tmp; | |
824 | int ret = -EINVAL; | |
825 | ||
826 | src_hdr = to_uvcg_streaming_header(src); | |
827 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
828 | ||
829 | opts_item = src->ci_parent->ci_parent->ci_parent; | |
830 | opts = to_f_uvc_opts(opts_item); | |
831 | ||
832 | mutex_lock(&opts->lock); | |
833 | target_fmt = container_of(to_config_group(target), struct uvcg_format, | |
834 | group); | |
835 | if (!target_fmt) | |
836 | goto out; | |
837 | ||
838 | list_for_each_entry_safe(format_ptr, tmp, &src_hdr->formats, entry) | |
839 | if (format_ptr->fmt == target_fmt) { | |
840 | list_del(&format_ptr->entry); | |
841 | kfree(format_ptr); | |
842 | --src_hdr->num_fmt; | |
843 | break; | |
844 | } | |
845 | ||
846 | out: | |
847 | mutex_unlock(&opts->lock); | |
848 | mutex_unlock(su_mutex); | |
849 | return ret; | |
850 | ||
851 | } | |
852 | ||
853 | static struct configfs_item_operations uvcg_streaming_header_item_ops = { | |
46919a23 AP |
854 | .allow_link = uvcg_streaming_header_allow_link, |
855 | .drop_link = uvcg_streaming_header_drop_link, | |
856 | }; | |
857 | ||
858 | #define UVCG_STREAMING_HEADER_ATTR(cname, aname, conv) \ | |
859 | static ssize_t uvcg_streaming_header_##cname##_show( \ | |
76e0da34 | 860 | struct config_item *item, char *page) \ |
46919a23 | 861 | { \ |
76e0da34 | 862 | struct uvcg_streaming_header *sh = to_uvcg_streaming_header(item); \ |
46919a23 AP |
863 | struct f_uvc_opts *opts; \ |
864 | struct config_item *opts_item; \ | |
865 | struct mutex *su_mutex = &sh->item.ci_group->cg_subsys->su_mutex;\ | |
866 | int result; \ | |
867 | \ | |
868 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
869 | \ | |
870 | opts_item = sh->item.ci_parent->ci_parent->ci_parent; \ | |
871 | opts = to_f_uvc_opts(opts_item); \ | |
872 | \ | |
873 | mutex_lock(&opts->lock); \ | |
874 | result = sprintf(page, "%d\n", conv(sh->desc.aname)); \ | |
875 | mutex_unlock(&opts->lock); \ | |
876 | \ | |
877 | mutex_unlock(su_mutex); \ | |
878 | return result; \ | |
879 | } \ | |
880 | \ | |
76e0da34 | 881 | UVC_ATTR_RO(uvcg_streaming_header_, cname, aname) |
46919a23 AP |
882 | |
883 | #define identity_conv(x) (x) | |
884 | ||
885 | UVCG_STREAMING_HEADER_ATTR(bm_info, bmInfo, identity_conv); | |
886 | UVCG_STREAMING_HEADER_ATTR(b_terminal_link, bTerminalLink, identity_conv); | |
887 | UVCG_STREAMING_HEADER_ATTR(b_still_capture_method, bStillCaptureMethod, | |
888 | identity_conv); | |
889 | UVCG_STREAMING_HEADER_ATTR(b_trigger_support, bTriggerSupport, identity_conv); | |
890 | UVCG_STREAMING_HEADER_ATTR(b_trigger_usage, bTriggerUsage, identity_conv); | |
891 | ||
892 | #undef identity_conv | |
893 | ||
894 | #undef UVCG_STREAMING_HEADER_ATTR | |
895 | ||
896 | static struct configfs_attribute *uvcg_streaming_header_attrs[] = { | |
76e0da34 CH |
897 | &uvcg_streaming_header_attr_bm_info, |
898 | &uvcg_streaming_header_attr_b_terminal_link, | |
899 | &uvcg_streaming_header_attr_b_still_capture_method, | |
900 | &uvcg_streaming_header_attr_b_trigger_support, | |
901 | &uvcg_streaming_header_attr_b_trigger_usage, | |
46919a23 AP |
902 | NULL, |
903 | }; | |
904 | ||
f093a2d4 | 905 | static struct config_item_type uvcg_streaming_header_type = { |
46919a23 AP |
906 | .ct_item_ops = &uvcg_streaming_header_item_ops, |
907 | .ct_attrs = uvcg_streaming_header_attrs, | |
908 | .ct_owner = THIS_MODULE, | |
909 | }; | |
910 | ||
911 | static struct config_item | |
912 | *uvcg_streaming_header_make(struct config_group *group, const char *name) | |
913 | { | |
914 | struct uvcg_streaming_header *h; | |
915 | ||
916 | h = kzalloc(sizeof(*h), GFP_KERNEL); | |
917 | if (!h) | |
df90f838 | 918 | return ERR_PTR(-ENOMEM); |
46919a23 AP |
919 | |
920 | INIT_LIST_HEAD(&h->formats); | |
921 | h->desc.bDescriptorType = USB_DT_CS_INTERFACE; | |
922 | h->desc.bDescriptorSubType = UVC_VS_INPUT_HEADER; | |
923 | h->desc.bTerminalLink = 3; | |
924 | h->desc.bControlSize = UVCG_STREAMING_CONTROL_SIZE; | |
925 | ||
926 | config_item_init_type_name(&h->item, name, &uvcg_streaming_header_type); | |
927 | ||
928 | return &h->item; | |
929 | } | |
930 | ||
f093a2d4 | 931 | static void uvcg_streaming_header_drop(struct config_group *group, |
46919a23 AP |
932 | struct config_item *item) |
933 | { | |
934 | struct uvcg_streaming_header *h = to_uvcg_streaming_header(item); | |
935 | ||
936 | kfree(h); | |
937 | } | |
938 | ||
939 | /* streaming/header */ | |
940 | static struct uvcg_streaming_header_grp { | |
941 | struct config_group group; | |
942 | } uvcg_streaming_header_grp; | |
943 | ||
944 | static struct configfs_group_operations uvcg_streaming_header_grp_ops = { | |
945 | .make_item = uvcg_streaming_header_make, | |
946 | .drop_item = uvcg_streaming_header_drop, | |
947 | }; | |
948 | ||
949 | static struct config_item_type uvcg_streaming_header_grp_type = { | |
950 | .ct_group_ops = &uvcg_streaming_header_grp_ops, | |
951 | .ct_owner = THIS_MODULE, | |
952 | }; | |
953 | ||
954 | /* streaming/<mode>/<format>/<NAME> */ | |
955 | struct uvcg_frame { | |
956 | struct { | |
957 | u8 b_length; | |
958 | u8 b_descriptor_type; | |
959 | u8 b_descriptor_subtype; | |
960 | u8 b_frame_index; | |
961 | u8 bm_capabilities; | |
962 | u16 w_width; | |
963 | u16 w_height; | |
964 | u32 dw_min_bit_rate; | |
965 | u32 dw_max_bit_rate; | |
966 | u32 dw_max_video_frame_buffer_size; | |
967 | u32 dw_default_frame_interval; | |
968 | u8 b_frame_interval_type; | |
969 | } __attribute__((packed)) frame; | |
970 | u32 *dw_frame_interval; | |
971 | enum uvcg_format_type fmt_type; | |
972 | struct config_item item; | |
973 | }; | |
974 | ||
f093a2d4 | 975 | static struct uvcg_frame *to_uvcg_frame(struct config_item *item) |
46919a23 AP |
976 | { |
977 | return container_of(item, struct uvcg_frame, item); | |
978 | } | |
979 | ||
3c4c733c | 980 | #define UVCG_FRAME_ATTR(cname, aname, to_cpu_endian, to_little_endian, bits) \ |
76e0da34 | 981 | static ssize_t uvcg_frame_##cname##_show(struct config_item *item, char *page)\ |
46919a23 | 982 | { \ |
76e0da34 | 983 | struct uvcg_frame *f = to_uvcg_frame(item); \ |
46919a23 AP |
984 | struct f_uvc_opts *opts; \ |
985 | struct config_item *opts_item; \ | |
986 | struct mutex *su_mutex = &f->item.ci_group->cg_subsys->su_mutex;\ | |
987 | int result; \ | |
988 | \ | |
989 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
990 | \ | |
991 | opts_item = f->item.ci_parent->ci_parent->ci_parent->ci_parent; \ | |
992 | opts = to_f_uvc_opts(opts_item); \ | |
993 | \ | |
994 | mutex_lock(&opts->lock); \ | |
3c4c733c | 995 | result = sprintf(page, "%d\n", to_cpu_endian(f->frame.cname)); \ |
46919a23 AP |
996 | mutex_unlock(&opts->lock); \ |
997 | \ | |
998 | mutex_unlock(su_mutex); \ | |
999 | return result; \ | |
1000 | } \ | |
1001 | \ | |
76e0da34 | 1002 | static ssize_t uvcg_frame_##cname##_store(struct config_item *item, \ |
46919a23 AP |
1003 | const char *page, size_t len)\ |
1004 | { \ | |
76e0da34 | 1005 | struct uvcg_frame *f = to_uvcg_frame(item); \ |
46919a23 AP |
1006 | struct f_uvc_opts *opts; \ |
1007 | struct config_item *opts_item; \ | |
1008 | struct uvcg_format *fmt; \ | |
1009 | struct mutex *su_mutex = &f->item.ci_group->cg_subsys->su_mutex;\ | |
1010 | int ret; \ | |
3c4c733c DC |
1011 | u##bits num; \ |
1012 | \ | |
1013 | ret = kstrtou##bits(page, 0, &num); \ | |
1014 | if (ret) \ | |
1015 | return ret; \ | |
46919a23 AP |
1016 | \ |
1017 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
1018 | \ | |
1019 | opts_item = f->item.ci_parent->ci_parent->ci_parent->ci_parent; \ | |
1020 | opts = to_f_uvc_opts(opts_item); \ | |
1021 | fmt = to_uvcg_format(f->item.ci_parent); \ | |
1022 | \ | |
1023 | mutex_lock(&opts->lock); \ | |
1024 | if (fmt->linked || opts->refcnt) { \ | |
1025 | ret = -EBUSY; \ | |
1026 | goto end; \ | |
1027 | } \ | |
1028 | \ | |
3c4c733c | 1029 | f->frame.cname = to_little_endian(num); \ |
46919a23 AP |
1030 | ret = len; \ |
1031 | end: \ | |
1032 | mutex_unlock(&opts->lock); \ | |
1033 | mutex_unlock(su_mutex); \ | |
1034 | return ret; \ | |
1035 | } \ | |
1036 | \ | |
76e0da34 | 1037 | UVC_ATTR(uvcg_frame_, cname, aname); |
46919a23 | 1038 | |
3c4c733c | 1039 | #define noop_conversion(x) (x) |
46919a23 | 1040 | |
3c4c733c DC |
1041 | UVCG_FRAME_ATTR(bm_capabilities, bmCapabilities, noop_conversion, |
1042 | noop_conversion, 8); | |
1043 | UVCG_FRAME_ATTR(w_width, wWidth, le16_to_cpu, cpu_to_le16, 16); | |
1044 | UVCG_FRAME_ATTR(w_height, wHeight, le16_to_cpu, cpu_to_le16, 16); | |
1045 | UVCG_FRAME_ATTR(dw_min_bit_rate, dwMinBitRate, le32_to_cpu, cpu_to_le32, 32); | |
1046 | UVCG_FRAME_ATTR(dw_max_bit_rate, dwMaxBitRate, le32_to_cpu, cpu_to_le32, 32); | |
46919a23 | 1047 | UVCG_FRAME_ATTR(dw_max_video_frame_buffer_size, dwMaxVideoFrameBufferSize, |
3c4c733c | 1048 | le32_to_cpu, cpu_to_le32, 32); |
46919a23 | 1049 | UVCG_FRAME_ATTR(dw_default_frame_interval, dwDefaultFrameInterval, |
3c4c733c | 1050 | le32_to_cpu, cpu_to_le32, 32); |
46919a23 | 1051 | |
3c4c733c | 1052 | #undef noop_conversion |
46919a23 AP |
1053 | |
1054 | #undef UVCG_FRAME_ATTR | |
1055 | ||
76e0da34 | 1056 | static ssize_t uvcg_frame_dw_frame_interval_show(struct config_item *item, |
46919a23 AP |
1057 | char *page) |
1058 | { | |
76e0da34 | 1059 | struct uvcg_frame *frm = to_uvcg_frame(item); |
46919a23 AP |
1060 | struct f_uvc_opts *opts; |
1061 | struct config_item *opts_item; | |
1062 | struct mutex *su_mutex = &frm->item.ci_group->cg_subsys->su_mutex; | |
1063 | int result, i; | |
1064 | char *pg = page; | |
1065 | ||
1066 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
1067 | ||
1068 | opts_item = frm->item.ci_parent->ci_parent->ci_parent->ci_parent; | |
1069 | opts = to_f_uvc_opts(opts_item); | |
1070 | ||
1071 | mutex_lock(&opts->lock); | |
1072 | for (result = 0, i = 0; i < frm->frame.b_frame_interval_type; ++i) { | |
1073 | result += sprintf(pg, "%d\n", | |
1074 | le32_to_cpu(frm->dw_frame_interval[i])); | |
1075 | pg = page + result; | |
1076 | } | |
1077 | mutex_unlock(&opts->lock); | |
1078 | ||
1079 | mutex_unlock(su_mutex); | |
1080 | return result; | |
1081 | } | |
1082 | ||
1083 | static inline int __uvcg_count_frm_intrv(char *buf, void *priv) | |
1084 | { | |
1085 | ++*((int *)priv); | |
1086 | return 0; | |
1087 | } | |
1088 | ||
1089 | static inline int __uvcg_fill_frm_intrv(char *buf, void *priv) | |
1090 | { | |
1091 | u32 num, **interv; | |
1092 | int ret; | |
1093 | ||
1094 | ret = kstrtou32(buf, 0, &num); | |
1095 | if (ret) | |
1096 | return ret; | |
46919a23 AP |
1097 | |
1098 | interv = priv; | |
1099 | **interv = cpu_to_le32(num); | |
1100 | ++*interv; | |
1101 | ||
1102 | return 0; | |
1103 | } | |
1104 | ||
1105 | static int __uvcg_iter_frm_intrv(const char *page, size_t len, | |
1106 | int (*fun)(char *, void *), void *priv) | |
1107 | { | |
1108 | /* sign, base 2 representation, newline, terminator */ | |
1109 | char buf[1 + sizeof(u32) * 8 + 1 + 1]; | |
1110 | const char *pg = page; | |
1111 | int i, ret; | |
1112 | ||
1113 | if (!fun) | |
1114 | return -EINVAL; | |
1115 | ||
1116 | while (pg - page < len) { | |
1117 | i = 0; | |
1118 | while (i < sizeof(buf) && (pg - page < len) && | |
1119 | *pg != '\0' && *pg != '\n') | |
1120 | buf[i++] = *pg++; | |
1121 | if (i == sizeof(buf)) | |
1122 | return -EINVAL; | |
1123 | while ((pg - page < len) && (*pg == '\0' || *pg == '\n')) | |
1124 | ++pg; | |
1125 | buf[i] = '\0'; | |
1126 | ret = fun(buf, priv); | |
1127 | if (ret) | |
1128 | return ret; | |
1129 | } | |
1130 | ||
1131 | return 0; | |
1132 | } | |
1133 | ||
76e0da34 | 1134 | static ssize_t uvcg_frame_dw_frame_interval_store(struct config_item *item, |
46919a23 AP |
1135 | const char *page, size_t len) |
1136 | { | |
76e0da34 | 1137 | struct uvcg_frame *ch = to_uvcg_frame(item); |
46919a23 AP |
1138 | struct f_uvc_opts *opts; |
1139 | struct config_item *opts_item; | |
1140 | struct uvcg_format *fmt; | |
1141 | struct mutex *su_mutex = &ch->item.ci_group->cg_subsys->su_mutex; | |
1142 | int ret = 0, n = 0; | |
1143 | u32 *frm_intrv, *tmp; | |
1144 | ||
1145 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
1146 | ||
1147 | opts_item = ch->item.ci_parent->ci_parent->ci_parent->ci_parent; | |
1148 | opts = to_f_uvc_opts(opts_item); | |
1149 | fmt = to_uvcg_format(ch->item.ci_parent); | |
1150 | ||
1151 | mutex_lock(&opts->lock); | |
1152 | if (fmt->linked || opts->refcnt) { | |
1153 | ret = -EBUSY; | |
1154 | goto end; | |
1155 | } | |
1156 | ||
1157 | ret = __uvcg_iter_frm_intrv(page, len, __uvcg_count_frm_intrv, &n); | |
1158 | if (ret) | |
1159 | goto end; | |
1160 | ||
1161 | tmp = frm_intrv = kcalloc(n, sizeof(u32), GFP_KERNEL); | |
1162 | if (!frm_intrv) { | |
1163 | ret = -ENOMEM; | |
1164 | goto end; | |
1165 | } | |
1166 | ||
1167 | ret = __uvcg_iter_frm_intrv(page, len, __uvcg_fill_frm_intrv, &tmp); | |
1168 | if (ret) { | |
1169 | kfree(frm_intrv); | |
1170 | goto end; | |
1171 | } | |
1172 | ||
1173 | kfree(ch->dw_frame_interval); | |
1174 | ch->dw_frame_interval = frm_intrv; | |
1175 | ch->frame.b_frame_interval_type = n; | |
1176 | ret = len; | |
1177 | ||
1178 | end: | |
1179 | mutex_unlock(&opts->lock); | |
1180 | mutex_unlock(su_mutex); | |
1181 | return ret; | |
1182 | } | |
1183 | ||
76e0da34 | 1184 | UVC_ATTR(uvcg_frame_, dw_frame_interval, dwFrameInterval); |
46919a23 AP |
1185 | |
1186 | static struct configfs_attribute *uvcg_frame_attrs[] = { | |
76e0da34 CH |
1187 | &uvcg_frame_attr_bm_capabilities, |
1188 | &uvcg_frame_attr_w_width, | |
1189 | &uvcg_frame_attr_w_height, | |
1190 | &uvcg_frame_attr_dw_min_bit_rate, | |
1191 | &uvcg_frame_attr_dw_max_bit_rate, | |
1192 | &uvcg_frame_attr_dw_max_video_frame_buffer_size, | |
1193 | &uvcg_frame_attr_dw_default_frame_interval, | |
1194 | &uvcg_frame_attr_dw_frame_interval, | |
46919a23 AP |
1195 | NULL, |
1196 | }; | |
1197 | ||
f093a2d4 | 1198 | static struct config_item_type uvcg_frame_type = { |
46919a23 AP |
1199 | .ct_attrs = uvcg_frame_attrs, |
1200 | .ct_owner = THIS_MODULE, | |
1201 | }; | |
1202 | ||
1203 | static struct config_item *uvcg_frame_make(struct config_group *group, | |
1204 | const char *name) | |
1205 | { | |
1206 | struct uvcg_frame *h; | |
1207 | struct uvcg_format *fmt; | |
1208 | struct f_uvc_opts *opts; | |
1209 | struct config_item *opts_item; | |
1210 | ||
1211 | h = kzalloc(sizeof(*h), GFP_KERNEL); | |
1212 | if (!h) | |
df90f838 | 1213 | return ERR_PTR(-ENOMEM); |
46919a23 AP |
1214 | |
1215 | h->frame.b_descriptor_type = USB_DT_CS_INTERFACE; | |
1216 | h->frame.b_frame_index = 1; | |
1217 | h->frame.w_width = cpu_to_le16(640); | |
1218 | h->frame.w_height = cpu_to_le16(360); | |
1219 | h->frame.dw_min_bit_rate = cpu_to_le32(18432000); | |
1220 | h->frame.dw_max_bit_rate = cpu_to_le32(55296000); | |
1221 | h->frame.dw_max_video_frame_buffer_size = cpu_to_le32(460800); | |
1222 | h->frame.dw_default_frame_interval = cpu_to_le32(666666); | |
1223 | ||
1224 | opts_item = group->cg_item.ci_parent->ci_parent->ci_parent; | |
1225 | opts = to_f_uvc_opts(opts_item); | |
1226 | ||
1227 | mutex_lock(&opts->lock); | |
1228 | fmt = to_uvcg_format(&group->cg_item); | |
1229 | if (fmt->type == UVCG_UNCOMPRESSED) { | |
1230 | h->frame.b_descriptor_subtype = UVC_VS_FRAME_UNCOMPRESSED; | |
1231 | h->fmt_type = UVCG_UNCOMPRESSED; | |
1232 | } else if (fmt->type == UVCG_MJPEG) { | |
1233 | h->frame.b_descriptor_subtype = UVC_VS_FRAME_MJPEG; | |
1234 | h->fmt_type = UVCG_MJPEG; | |
1235 | } else { | |
1236 | mutex_unlock(&opts->lock); | |
c5b2dc68 | 1237 | kfree(h); |
46919a23 AP |
1238 | return ERR_PTR(-EINVAL); |
1239 | } | |
1240 | ++fmt->num_frames; | |
1241 | mutex_unlock(&opts->lock); | |
1242 | ||
1243 | config_item_init_type_name(&h->item, name, &uvcg_frame_type); | |
1244 | ||
1245 | return &h->item; | |
1246 | } | |
1247 | ||
f093a2d4 | 1248 | static void uvcg_frame_drop(struct config_group *group, struct config_item *item) |
46919a23 AP |
1249 | { |
1250 | struct uvcg_frame *h = to_uvcg_frame(item); | |
1251 | struct uvcg_format *fmt; | |
1252 | struct f_uvc_opts *opts; | |
1253 | struct config_item *opts_item; | |
1254 | ||
1255 | opts_item = group->cg_item.ci_parent->ci_parent->ci_parent; | |
1256 | opts = to_f_uvc_opts(opts_item); | |
1257 | ||
1258 | mutex_lock(&opts->lock); | |
1259 | fmt = to_uvcg_format(&group->cg_item); | |
1260 | --fmt->num_frames; | |
1261 | kfree(h); | |
1262 | mutex_unlock(&opts->lock); | |
1263 | } | |
1264 | ||
1265 | /* streaming/uncompressed/<NAME> */ | |
1266 | struct uvcg_uncompressed { | |
1267 | struct uvcg_format fmt; | |
1268 | struct uvc_format_uncompressed desc; | |
1269 | }; | |
1270 | ||
f093a2d4 | 1271 | static struct uvcg_uncompressed *to_uvcg_uncompressed(struct config_item *item) |
46919a23 AP |
1272 | { |
1273 | return container_of( | |
1274 | container_of(to_config_group(item), struct uvcg_format, group), | |
1275 | struct uvcg_uncompressed, fmt); | |
1276 | } | |
1277 | ||
46919a23 AP |
1278 | static struct configfs_group_operations uvcg_uncompressed_group_ops = { |
1279 | .make_item = uvcg_frame_make, | |
1280 | .drop_item = uvcg_frame_drop, | |
1281 | }; | |
1282 | ||
76e0da34 | 1283 | static ssize_t uvcg_uncompressed_guid_format_show(struct config_item *item, |
46919a23 AP |
1284 | char *page) |
1285 | { | |
76e0da34 | 1286 | struct uvcg_uncompressed *ch = to_uvcg_uncompressed(item); |
46919a23 AP |
1287 | struct f_uvc_opts *opts; |
1288 | struct config_item *opts_item; | |
1289 | struct mutex *su_mutex = &ch->fmt.group.cg_subsys->su_mutex; | |
1290 | ||
1291 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
1292 | ||
1293 | opts_item = ch->fmt.group.cg_item.ci_parent->ci_parent->ci_parent; | |
1294 | opts = to_f_uvc_opts(opts_item); | |
1295 | ||
1296 | mutex_lock(&opts->lock); | |
1297 | memcpy(page, ch->desc.guidFormat, sizeof(ch->desc.guidFormat)); | |
1298 | mutex_unlock(&opts->lock); | |
1299 | ||
1300 | mutex_unlock(su_mutex); | |
1301 | ||
1302 | return sizeof(ch->desc.guidFormat); | |
1303 | } | |
1304 | ||
76e0da34 | 1305 | static ssize_t uvcg_uncompressed_guid_format_store(struct config_item *item, |
46919a23 AP |
1306 | const char *page, size_t len) |
1307 | { | |
76e0da34 | 1308 | struct uvcg_uncompressed *ch = to_uvcg_uncompressed(item); |
46919a23 AP |
1309 | struct f_uvc_opts *opts; |
1310 | struct config_item *opts_item; | |
1311 | struct mutex *su_mutex = &ch->fmt.group.cg_subsys->su_mutex; | |
1312 | int ret; | |
1313 | ||
1314 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
1315 | ||
1316 | opts_item = ch->fmt.group.cg_item.ci_parent->ci_parent->ci_parent; | |
1317 | opts = to_f_uvc_opts(opts_item); | |
1318 | ||
1319 | mutex_lock(&opts->lock); | |
1320 | if (ch->fmt.linked || opts->refcnt) { | |
1321 | ret = -EBUSY; | |
1322 | goto end; | |
1323 | } | |
1324 | ||
1325 | memcpy(ch->desc.guidFormat, page, | |
1326 | min(sizeof(ch->desc.guidFormat), len)); | |
1327 | ret = sizeof(ch->desc.guidFormat); | |
1328 | ||
1329 | end: | |
1330 | mutex_unlock(&opts->lock); | |
1331 | mutex_unlock(su_mutex); | |
1332 | return ret; | |
1333 | } | |
1334 | ||
76e0da34 | 1335 | UVC_ATTR(uvcg_uncompressed_, guid_format, guidFormat); |
46919a23 AP |
1336 | |
1337 | #define UVCG_UNCOMPRESSED_ATTR_RO(cname, aname, conv) \ | |
1338 | static ssize_t uvcg_uncompressed_##cname##_show( \ | |
76e0da34 | 1339 | struct config_item *item, char *page) \ |
46919a23 | 1340 | { \ |
76e0da34 | 1341 | struct uvcg_uncompressed *u = to_uvcg_uncompressed(item); \ |
46919a23 AP |
1342 | struct f_uvc_opts *opts; \ |
1343 | struct config_item *opts_item; \ | |
1344 | struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ | |
1345 | int result; \ | |
1346 | \ | |
1347 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
1348 | \ | |
1349 | opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ | |
1350 | opts = to_f_uvc_opts(opts_item); \ | |
1351 | \ | |
1352 | mutex_lock(&opts->lock); \ | |
1353 | result = sprintf(page, "%d\n", conv(u->desc.aname)); \ | |
1354 | mutex_unlock(&opts->lock); \ | |
1355 | \ | |
1356 | mutex_unlock(su_mutex); \ | |
1357 | return result; \ | |
1358 | } \ | |
1359 | \ | |
76e0da34 | 1360 | UVC_ATTR_RO(uvcg_uncompressed_, cname, aname); |
46919a23 AP |
1361 | |
1362 | #define UVCG_UNCOMPRESSED_ATTR(cname, aname, conv) \ | |
1363 | static ssize_t uvcg_uncompressed_##cname##_show( \ | |
76e0da34 | 1364 | struct config_item *item, char *page) \ |
46919a23 | 1365 | { \ |
76e0da34 | 1366 | struct uvcg_uncompressed *u = to_uvcg_uncompressed(item); \ |
46919a23 AP |
1367 | struct f_uvc_opts *opts; \ |
1368 | struct config_item *opts_item; \ | |
1369 | struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ | |
1370 | int result; \ | |
1371 | \ | |
1372 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
1373 | \ | |
1374 | opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ | |
1375 | opts = to_f_uvc_opts(opts_item); \ | |
1376 | \ | |
1377 | mutex_lock(&opts->lock); \ | |
1378 | result = sprintf(page, "%d\n", conv(u->desc.aname)); \ | |
1379 | mutex_unlock(&opts->lock); \ | |
1380 | \ | |
1381 | mutex_unlock(su_mutex); \ | |
1382 | return result; \ | |
1383 | } \ | |
1384 | \ | |
1385 | static ssize_t \ | |
76e0da34 | 1386 | uvcg_uncompressed_##cname##_store(struct config_item *item, \ |
46919a23 AP |
1387 | const char *page, size_t len) \ |
1388 | { \ | |
76e0da34 | 1389 | struct uvcg_uncompressed *u = to_uvcg_uncompressed(item); \ |
46919a23 AP |
1390 | struct f_uvc_opts *opts; \ |
1391 | struct config_item *opts_item; \ | |
1392 | struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ | |
1393 | int ret; \ | |
1394 | u8 num; \ | |
1395 | \ | |
1396 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
1397 | \ | |
1398 | opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ | |
1399 | opts = to_f_uvc_opts(opts_item); \ | |
1400 | \ | |
1401 | mutex_lock(&opts->lock); \ | |
1402 | if (u->fmt.linked || opts->refcnt) { \ | |
1403 | ret = -EBUSY; \ | |
1404 | goto end; \ | |
1405 | } \ | |
1406 | \ | |
1407 | ret = kstrtou8(page, 0, &num); \ | |
1408 | if (ret) \ | |
1409 | goto end; \ | |
1410 | \ | |
1411 | if (num > 255) { \ | |
1412 | ret = -EINVAL; \ | |
1413 | goto end; \ | |
1414 | } \ | |
1415 | u->desc.aname = num; \ | |
1416 | ret = len; \ | |
1417 | end: \ | |
1418 | mutex_unlock(&opts->lock); \ | |
1419 | mutex_unlock(su_mutex); \ | |
1420 | return ret; \ | |
1421 | } \ | |
1422 | \ | |
76e0da34 | 1423 | UVC_ATTR(uvcg_uncompressed_, cname, aname); |
46919a23 AP |
1424 | |
1425 | #define identity_conv(x) (x) | |
1426 | ||
1427 | UVCG_UNCOMPRESSED_ATTR(b_bits_per_pixel, bBitsPerPixel, identity_conv); | |
1428 | UVCG_UNCOMPRESSED_ATTR(b_default_frame_index, bDefaultFrameIndex, | |
1429 | identity_conv); | |
1430 | UVCG_UNCOMPRESSED_ATTR_RO(b_aspect_ratio_x, bAspectRatioX, identity_conv); | |
1431 | UVCG_UNCOMPRESSED_ATTR_RO(b_aspect_ratio_y, bAspectRatioY, identity_conv); | |
1432 | UVCG_UNCOMPRESSED_ATTR_RO(bm_interface_flags, bmInterfaceFlags, identity_conv); | |
1433 | ||
1434 | #undef identity_conv | |
1435 | ||
1436 | #undef UVCG_UNCOMPRESSED_ATTR | |
1437 | #undef UVCG_UNCOMPRESSED_ATTR_RO | |
1438 | ||
1439 | static inline ssize_t | |
76e0da34 | 1440 | uvcg_uncompressed_bma_controls_show(struct config_item *item, char *page) |
46919a23 | 1441 | { |
76e0da34 | 1442 | struct uvcg_uncompressed *unc = to_uvcg_uncompressed(item); |
46919a23 AP |
1443 | return uvcg_format_bma_controls_show(&unc->fmt, page); |
1444 | } | |
1445 | ||
1446 | static inline ssize_t | |
76e0da34 | 1447 | uvcg_uncompressed_bma_controls_store(struct config_item *item, |
46919a23 AP |
1448 | const char *page, size_t len) |
1449 | { | |
76e0da34 CH |
1450 | struct uvcg_uncompressed *unc = to_uvcg_uncompressed(item); |
1451 | return uvcg_format_bma_controls_store(&unc->fmt, page, len); | |
46919a23 AP |
1452 | } |
1453 | ||
76e0da34 | 1454 | UVC_ATTR(uvcg_uncompressed_, bma_controls, bmaControls); |
46919a23 AP |
1455 | |
1456 | static struct configfs_attribute *uvcg_uncompressed_attrs[] = { | |
76e0da34 CH |
1457 | &uvcg_uncompressed_attr_guid_format, |
1458 | &uvcg_uncompressed_attr_b_bits_per_pixel, | |
1459 | &uvcg_uncompressed_attr_b_default_frame_index, | |
1460 | &uvcg_uncompressed_attr_b_aspect_ratio_x, | |
1461 | &uvcg_uncompressed_attr_b_aspect_ratio_y, | |
1462 | &uvcg_uncompressed_attr_bm_interface_flags, | |
1463 | &uvcg_uncompressed_attr_bma_controls, | |
46919a23 AP |
1464 | NULL, |
1465 | }; | |
1466 | ||
f093a2d4 | 1467 | static struct config_item_type uvcg_uncompressed_type = { |
46919a23 AP |
1468 | .ct_group_ops = &uvcg_uncompressed_group_ops, |
1469 | .ct_attrs = uvcg_uncompressed_attrs, | |
1470 | .ct_owner = THIS_MODULE, | |
1471 | }; | |
1472 | ||
1473 | static struct config_group *uvcg_uncompressed_make(struct config_group *group, | |
1474 | const char *name) | |
1475 | { | |
1476 | static char guid[] = { | |
1477 | 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, | |
1478 | 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 | |
1479 | }; | |
1480 | struct uvcg_uncompressed *h; | |
1481 | ||
1482 | h = kzalloc(sizeof(*h), GFP_KERNEL); | |
1483 | if (!h) | |
df90f838 | 1484 | return ERR_PTR(-ENOMEM); |
46919a23 AP |
1485 | |
1486 | h->desc.bLength = UVC_DT_FORMAT_UNCOMPRESSED_SIZE; | |
1487 | h->desc.bDescriptorType = USB_DT_CS_INTERFACE; | |
1488 | h->desc.bDescriptorSubType = UVC_VS_FORMAT_UNCOMPRESSED; | |
1489 | memcpy(h->desc.guidFormat, guid, sizeof(guid)); | |
1490 | h->desc.bBitsPerPixel = 16; | |
1491 | h->desc.bDefaultFrameIndex = 1; | |
1492 | h->desc.bAspectRatioX = 0; | |
1493 | h->desc.bAspectRatioY = 0; | |
1494 | h->desc.bmInterfaceFlags = 0; | |
1495 | h->desc.bCopyProtect = 0; | |
1496 | ||
1497 | h->fmt.type = UVCG_UNCOMPRESSED; | |
1498 | config_group_init_type_name(&h->fmt.group, name, | |
1499 | &uvcg_uncompressed_type); | |
1500 | ||
1501 | return &h->fmt.group; | |
1502 | } | |
1503 | ||
f093a2d4 | 1504 | static void uvcg_uncompressed_drop(struct config_group *group, |
46919a23 AP |
1505 | struct config_item *item) |
1506 | { | |
1507 | struct uvcg_uncompressed *h = to_uvcg_uncompressed(item); | |
1508 | ||
1509 | kfree(h); | |
1510 | } | |
1511 | ||
1512 | static struct configfs_group_operations uvcg_uncompressed_grp_ops = { | |
1513 | .make_group = uvcg_uncompressed_make, | |
1514 | .drop_item = uvcg_uncompressed_drop, | |
1515 | }; | |
1516 | ||
1517 | static struct config_item_type uvcg_uncompressed_grp_type = { | |
1518 | .ct_group_ops = &uvcg_uncompressed_grp_ops, | |
1519 | .ct_owner = THIS_MODULE, | |
1520 | }; | |
1521 | ||
1522 | /* streaming/mjpeg/<NAME> */ | |
1523 | struct uvcg_mjpeg { | |
1524 | struct uvcg_format fmt; | |
1525 | struct uvc_format_mjpeg desc; | |
1526 | }; | |
1527 | ||
f093a2d4 | 1528 | static struct uvcg_mjpeg *to_uvcg_mjpeg(struct config_item *item) |
46919a23 AP |
1529 | { |
1530 | return container_of( | |
1531 | container_of(to_config_group(item), struct uvcg_format, group), | |
1532 | struct uvcg_mjpeg, fmt); | |
1533 | } | |
1534 | ||
46919a23 AP |
1535 | static struct configfs_group_operations uvcg_mjpeg_group_ops = { |
1536 | .make_item = uvcg_frame_make, | |
1537 | .drop_item = uvcg_frame_drop, | |
1538 | }; | |
1539 | ||
1540 | #define UVCG_MJPEG_ATTR_RO(cname, aname, conv) \ | |
76e0da34 | 1541 | static ssize_t uvcg_mjpeg_##cname##_show(struct config_item *item, char *page)\ |
46919a23 | 1542 | { \ |
76e0da34 | 1543 | struct uvcg_mjpeg *u = to_uvcg_mjpeg(item); \ |
46919a23 AP |
1544 | struct f_uvc_opts *opts; \ |
1545 | struct config_item *opts_item; \ | |
1546 | struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ | |
1547 | int result; \ | |
1548 | \ | |
1549 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
1550 | \ | |
1551 | opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ | |
1552 | opts = to_f_uvc_opts(opts_item); \ | |
1553 | \ | |
1554 | mutex_lock(&opts->lock); \ | |
1555 | result = sprintf(page, "%d\n", conv(u->desc.aname)); \ | |
1556 | mutex_unlock(&opts->lock); \ | |
1557 | \ | |
1558 | mutex_unlock(su_mutex); \ | |
1559 | return result; \ | |
1560 | } \ | |
1561 | \ | |
76e0da34 | 1562 | UVC_ATTR_RO(uvcg_mjpeg_, cname, aname) |
46919a23 AP |
1563 | |
1564 | #define UVCG_MJPEG_ATTR(cname, aname, conv) \ | |
76e0da34 | 1565 | static ssize_t uvcg_mjpeg_##cname##_show(struct config_item *item, char *page)\ |
46919a23 | 1566 | { \ |
76e0da34 | 1567 | struct uvcg_mjpeg *u = to_uvcg_mjpeg(item); \ |
46919a23 AP |
1568 | struct f_uvc_opts *opts; \ |
1569 | struct config_item *opts_item; \ | |
1570 | struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ | |
1571 | int result; \ | |
1572 | \ | |
1573 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
1574 | \ | |
1575 | opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ | |
1576 | opts = to_f_uvc_opts(opts_item); \ | |
1577 | \ | |
1578 | mutex_lock(&opts->lock); \ | |
1579 | result = sprintf(page, "%d\n", conv(u->desc.aname)); \ | |
1580 | mutex_unlock(&opts->lock); \ | |
1581 | \ | |
1582 | mutex_unlock(su_mutex); \ | |
1583 | return result; \ | |
1584 | } \ | |
1585 | \ | |
1586 | static ssize_t \ | |
76e0da34 | 1587 | uvcg_mjpeg_##cname##_store(struct config_item *item, \ |
46919a23 AP |
1588 | const char *page, size_t len) \ |
1589 | { \ | |
76e0da34 | 1590 | struct uvcg_mjpeg *u = to_uvcg_mjpeg(item); \ |
46919a23 AP |
1591 | struct f_uvc_opts *opts; \ |
1592 | struct config_item *opts_item; \ | |
1593 | struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ | |
1594 | int ret; \ | |
1595 | u8 num; \ | |
1596 | \ | |
1597 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
1598 | \ | |
1599 | opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ | |
1600 | opts = to_f_uvc_opts(opts_item); \ | |
1601 | \ | |
1602 | mutex_lock(&opts->lock); \ | |
1603 | if (u->fmt.linked || opts->refcnt) { \ | |
1604 | ret = -EBUSY; \ | |
1605 | goto end; \ | |
1606 | } \ | |
1607 | \ | |
1608 | ret = kstrtou8(page, 0, &num); \ | |
1609 | if (ret) \ | |
1610 | goto end; \ | |
1611 | \ | |
1612 | if (num > 255) { \ | |
1613 | ret = -EINVAL; \ | |
1614 | goto end; \ | |
1615 | } \ | |
1616 | u->desc.aname = num; \ | |
1617 | ret = len; \ | |
1618 | end: \ | |
1619 | mutex_unlock(&opts->lock); \ | |
1620 | mutex_unlock(su_mutex); \ | |
1621 | return ret; \ | |
1622 | } \ | |
1623 | \ | |
76e0da34 | 1624 | UVC_ATTR(uvcg_mjpeg_, cname, aname) |
46919a23 AP |
1625 | |
1626 | #define identity_conv(x) (x) | |
1627 | ||
1628 | UVCG_MJPEG_ATTR(b_default_frame_index, bDefaultFrameIndex, | |
1629 | identity_conv); | |
1630 | UVCG_MJPEG_ATTR_RO(bm_flags, bmFlags, identity_conv); | |
1631 | UVCG_MJPEG_ATTR_RO(b_aspect_ratio_x, bAspectRatioX, identity_conv); | |
1632 | UVCG_MJPEG_ATTR_RO(b_aspect_ratio_y, bAspectRatioY, identity_conv); | |
1633 | UVCG_MJPEG_ATTR_RO(bm_interface_flags, bmInterfaceFlags, identity_conv); | |
1634 | ||
1635 | #undef identity_conv | |
1636 | ||
1637 | #undef UVCG_MJPEG_ATTR | |
1638 | #undef UVCG_MJPEG_ATTR_RO | |
1639 | ||
1640 | static inline ssize_t | |
76e0da34 | 1641 | uvcg_mjpeg_bma_controls_show(struct config_item *item, char *page) |
46919a23 | 1642 | { |
76e0da34 CH |
1643 | struct uvcg_mjpeg *u = to_uvcg_mjpeg(item); |
1644 | return uvcg_format_bma_controls_show(&u->fmt, page); | |
46919a23 AP |
1645 | } |
1646 | ||
1647 | static inline ssize_t | |
76e0da34 | 1648 | uvcg_mjpeg_bma_controls_store(struct config_item *item, |
46919a23 AP |
1649 | const char *page, size_t len) |
1650 | { | |
76e0da34 CH |
1651 | struct uvcg_mjpeg *u = to_uvcg_mjpeg(item); |
1652 | return uvcg_format_bma_controls_store(&u->fmt, page, len); | |
46919a23 AP |
1653 | } |
1654 | ||
76e0da34 | 1655 | UVC_ATTR(uvcg_mjpeg_, bma_controls, bmaControls); |
46919a23 AP |
1656 | |
1657 | static struct configfs_attribute *uvcg_mjpeg_attrs[] = { | |
76e0da34 CH |
1658 | &uvcg_mjpeg_attr_b_default_frame_index, |
1659 | &uvcg_mjpeg_attr_bm_flags, | |
1660 | &uvcg_mjpeg_attr_b_aspect_ratio_x, | |
1661 | &uvcg_mjpeg_attr_b_aspect_ratio_y, | |
1662 | &uvcg_mjpeg_attr_bm_interface_flags, | |
1663 | &uvcg_mjpeg_attr_bma_controls, | |
46919a23 AP |
1664 | NULL, |
1665 | }; | |
1666 | ||
f093a2d4 | 1667 | static struct config_item_type uvcg_mjpeg_type = { |
46919a23 AP |
1668 | .ct_group_ops = &uvcg_mjpeg_group_ops, |
1669 | .ct_attrs = uvcg_mjpeg_attrs, | |
1670 | .ct_owner = THIS_MODULE, | |
1671 | }; | |
1672 | ||
1673 | static struct config_group *uvcg_mjpeg_make(struct config_group *group, | |
1674 | const char *name) | |
1675 | { | |
1676 | struct uvcg_mjpeg *h; | |
1677 | ||
1678 | h = kzalloc(sizeof(*h), GFP_KERNEL); | |
1679 | if (!h) | |
df90f838 | 1680 | return ERR_PTR(-ENOMEM); |
46919a23 AP |
1681 | |
1682 | h->desc.bLength = UVC_DT_FORMAT_MJPEG_SIZE; | |
1683 | h->desc.bDescriptorType = USB_DT_CS_INTERFACE; | |
1684 | h->desc.bDescriptorSubType = UVC_VS_FORMAT_MJPEG; | |
1685 | h->desc.bDefaultFrameIndex = 1; | |
1686 | h->desc.bAspectRatioX = 0; | |
1687 | h->desc.bAspectRatioY = 0; | |
1688 | h->desc.bmInterfaceFlags = 0; | |
1689 | h->desc.bCopyProtect = 0; | |
1690 | ||
1691 | h->fmt.type = UVCG_MJPEG; | |
1692 | config_group_init_type_name(&h->fmt.group, name, | |
1693 | &uvcg_mjpeg_type); | |
1694 | ||
1695 | return &h->fmt.group; | |
1696 | } | |
1697 | ||
f093a2d4 | 1698 | static void uvcg_mjpeg_drop(struct config_group *group, |
46919a23 AP |
1699 | struct config_item *item) |
1700 | { | |
1701 | struct uvcg_mjpeg *h = to_uvcg_mjpeg(item); | |
1702 | ||
1703 | kfree(h); | |
1704 | } | |
1705 | ||
1706 | static struct configfs_group_operations uvcg_mjpeg_grp_ops = { | |
1707 | .make_group = uvcg_mjpeg_make, | |
1708 | .drop_item = uvcg_mjpeg_drop, | |
1709 | }; | |
1710 | ||
1711 | static struct config_item_type uvcg_mjpeg_grp_type = { | |
1712 | .ct_group_ops = &uvcg_mjpeg_grp_ops, | |
1713 | .ct_owner = THIS_MODULE, | |
1714 | }; | |
1715 | ||
1716 | /* streaming/color_matching/default */ | |
1717 | static struct uvcg_default_color_matching { | |
1718 | struct config_group group; | |
1719 | } uvcg_default_color_matching; | |
1720 | ||
1721 | static inline struct uvcg_default_color_matching | |
1722 | *to_uvcg_default_color_matching(struct config_item *item) | |
1723 | { | |
1724 | return container_of(to_config_group(item), | |
1725 | struct uvcg_default_color_matching, group); | |
1726 | } | |
1727 | ||
46919a23 AP |
1728 | #define UVCG_DEFAULT_COLOR_MATCHING_ATTR(cname, aname, conv) \ |
1729 | static ssize_t uvcg_default_color_matching_##cname##_show( \ | |
76e0da34 | 1730 | struct config_item *item, char *page) \ |
46919a23 | 1731 | { \ |
76e0da34 CH |
1732 | struct uvcg_default_color_matching *dc = \ |
1733 | to_uvcg_default_color_matching(item); \ | |
46919a23 AP |
1734 | struct f_uvc_opts *opts; \ |
1735 | struct config_item *opts_item; \ | |
1736 | struct mutex *su_mutex = &dc->group.cg_subsys->su_mutex; \ | |
1737 | struct uvc_color_matching_descriptor *cd; \ | |
1738 | int result; \ | |
1739 | \ | |
1740 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
1741 | \ | |
1742 | opts_item = dc->group.cg_item.ci_parent->ci_parent->ci_parent; \ | |
1743 | opts = to_f_uvc_opts(opts_item); \ | |
1744 | cd = &opts->uvc_color_matching; \ | |
1745 | \ | |
1746 | mutex_lock(&opts->lock); \ | |
1747 | result = sprintf(page, "%d\n", conv(cd->aname)); \ | |
1748 | mutex_unlock(&opts->lock); \ | |
1749 | \ | |
1750 | mutex_unlock(su_mutex); \ | |
1751 | return result; \ | |
1752 | } \ | |
1753 | \ | |
76e0da34 | 1754 | UVC_ATTR_RO(uvcg_default_color_matching_, cname, aname) |
46919a23 AP |
1755 | |
1756 | #define identity_conv(x) (x) | |
1757 | ||
1758 | UVCG_DEFAULT_COLOR_MATCHING_ATTR(b_color_primaries, bColorPrimaries, | |
1759 | identity_conv); | |
1760 | UVCG_DEFAULT_COLOR_MATCHING_ATTR(b_transfer_characteristics, | |
1761 | bTransferCharacteristics, identity_conv); | |
1762 | UVCG_DEFAULT_COLOR_MATCHING_ATTR(b_matrix_coefficients, bMatrixCoefficients, | |
1763 | identity_conv); | |
1764 | ||
1765 | #undef identity_conv | |
1766 | ||
1767 | #undef UVCG_DEFAULT_COLOR_MATCHING_ATTR | |
1768 | ||
1769 | static struct configfs_attribute *uvcg_default_color_matching_attrs[] = { | |
76e0da34 CH |
1770 | &uvcg_default_color_matching_attr_b_color_primaries, |
1771 | &uvcg_default_color_matching_attr_b_transfer_characteristics, | |
1772 | &uvcg_default_color_matching_attr_b_matrix_coefficients, | |
46919a23 AP |
1773 | NULL, |
1774 | }; | |
1775 | ||
1776 | static struct config_item_type uvcg_default_color_matching_type = { | |
46919a23 AP |
1777 | .ct_attrs = uvcg_default_color_matching_attrs, |
1778 | .ct_owner = THIS_MODULE, | |
1779 | }; | |
1780 | ||
1781 | /* struct uvcg_color_matching {}; */ | |
1782 | ||
1783 | static struct config_group *uvcg_color_matching_default_groups[] = { | |
1784 | &uvcg_default_color_matching.group, | |
1785 | NULL, | |
1786 | }; | |
1787 | ||
1788 | /* streaming/color_matching */ | |
1789 | static struct uvcg_color_matching_grp { | |
1790 | struct config_group group; | |
1791 | } uvcg_color_matching_grp; | |
1792 | ||
1793 | static struct config_item_type uvcg_color_matching_grp_type = { | |
1794 | .ct_owner = THIS_MODULE, | |
1795 | }; | |
1796 | ||
1797 | /* streaming/class/{fs|hs|ss} */ | |
1798 | static struct uvcg_streaming_class { | |
1799 | struct config_group group; | |
1800 | } uvcg_streaming_class_fs, uvcg_streaming_class_hs, uvcg_streaming_class_ss; | |
1801 | ||
1802 | ||
1803 | static inline struct uvc_descriptor_header | |
1804 | ***__uvcg_get_stream_class_arr(struct config_item *i, struct f_uvc_opts *o) | |
1805 | { | |
1806 | struct uvcg_streaming_class *cl = container_of(to_config_group(i), | |
1807 | struct uvcg_streaming_class, group); | |
1808 | ||
1809 | if (cl == &uvcg_streaming_class_fs) | |
1810 | return &o->uvc_fs_streaming_cls; | |
1811 | ||
1812 | if (cl == &uvcg_streaming_class_hs) | |
1813 | return &o->uvc_hs_streaming_cls; | |
1814 | ||
1815 | if (cl == &uvcg_streaming_class_ss) | |
1816 | return &o->uvc_ss_streaming_cls; | |
1817 | ||
1818 | return NULL; | |
1819 | } | |
1820 | ||
1821 | enum uvcg_strm_type { | |
1822 | UVCG_HEADER = 0, | |
1823 | UVCG_FORMAT, | |
1824 | UVCG_FRAME | |
1825 | }; | |
1826 | ||
578d0b6b AP |
1827 | /* |
1828 | * Iterate over a hierarchy of streaming descriptors' config items. | |
1829 | * The items are created by the user with configfs. | |
1830 | * | |
1831 | * It "processes" the header pointed to by @priv1, then for each format | |
1832 | * that follows the header "processes" the format itself and then for | |
1833 | * each frame inside a format "processes" the frame. | |
1834 | * | |
1835 | * As a "processing" function the @fun is used. | |
1836 | * | |
1837 | * __uvcg_iter_strm_cls() is used in two context: first, to calculate | |
1838 | * the amount of memory needed for an array of streaming descriptors | |
1839 | * and second, to actually fill the array. | |
1840 | * | |
1841 | * @h: streaming header pointer | |
1842 | * @priv2: an "inout" parameter (the caller might want to see the changes to it) | |
1843 | * @priv3: an "inout" parameter (the caller might want to see the changes to it) | |
1844 | * @fun: callback function for processing each level of the hierarchy | |
1845 | */ | |
72796835 AP |
1846 | static int __uvcg_iter_strm_cls(struct uvcg_streaming_header *h, |
1847 | void *priv2, void *priv3, | |
46919a23 AP |
1848 | int (*fun)(void *, void *, void *, int, enum uvcg_strm_type type)) |
1849 | { | |
46919a23 AP |
1850 | struct uvcg_format_ptr *f; |
1851 | struct config_group *grp; | |
1852 | struct config_item *item; | |
1853 | struct uvcg_frame *frm; | |
1854 | int ret, i, j; | |
1855 | ||
1856 | if (!fun) | |
1857 | return -EINVAL; | |
1858 | ||
1859 | i = j = 0; | |
1860 | ret = fun(h, priv2, priv3, 0, UVCG_HEADER); | |
1861 | if (ret) | |
1862 | return ret; | |
1863 | list_for_each_entry(f, &h->formats, entry) { | |
1864 | ret = fun(f->fmt, priv2, priv3, i++, UVCG_FORMAT); | |
1865 | if (ret) | |
1866 | return ret; | |
1867 | grp = &f->fmt->group; | |
1868 | list_for_each_entry(item, &grp->cg_children, ci_entry) { | |
1869 | frm = to_uvcg_frame(item); | |
1870 | ret = fun(frm, priv2, priv3, j++, UVCG_FRAME); | |
1871 | if (ret) | |
1872 | return ret; | |
1873 | } | |
1874 | } | |
1875 | ||
1876 | return ret; | |
1877 | } | |
1878 | ||
578d0b6b AP |
1879 | /* |
1880 | * Count how many bytes are needed for an array of streaming descriptors. | |
1881 | * | |
1882 | * @priv1: pointer to a header, format or frame | |
1883 | * @priv2: inout parameter, accumulated size of the array | |
1884 | * @priv3: inout parameter, accumulated number of the array elements | |
1885 | * @n: unused, this function's prototype must match @fun in __uvcg_iter_strm_cls | |
1886 | */ | |
46919a23 AP |
1887 | static int __uvcg_cnt_strm(void *priv1, void *priv2, void *priv3, int n, |
1888 | enum uvcg_strm_type type) | |
1889 | { | |
1890 | size_t *size = priv2; | |
1891 | size_t *count = priv3; | |
1892 | ||
1893 | switch (type) { | |
1894 | case UVCG_HEADER: { | |
1895 | struct uvcg_streaming_header *h = priv1; | |
1896 | ||
1897 | *size += sizeof(h->desc); | |
1898 | /* bmaControls */ | |
1899 | *size += h->num_fmt * UVCG_STREAMING_CONTROL_SIZE; | |
1900 | } | |
1901 | break; | |
1902 | case UVCG_FORMAT: { | |
1903 | struct uvcg_format *fmt = priv1; | |
1904 | ||
1905 | if (fmt->type == UVCG_UNCOMPRESSED) { | |
1906 | struct uvcg_uncompressed *u = | |
1907 | container_of(fmt, struct uvcg_uncompressed, | |
1908 | fmt); | |
1909 | ||
1910 | *size += sizeof(u->desc); | |
1911 | } else if (fmt->type == UVCG_MJPEG) { | |
1912 | struct uvcg_mjpeg *m = | |
1913 | container_of(fmt, struct uvcg_mjpeg, fmt); | |
1914 | ||
1915 | *size += sizeof(m->desc); | |
1916 | } else { | |
1917 | return -EINVAL; | |
1918 | } | |
1919 | } | |
1920 | break; | |
1921 | case UVCG_FRAME: { | |
1922 | struct uvcg_frame *frm = priv1; | |
1923 | int sz = sizeof(frm->dw_frame_interval); | |
1924 | ||
1925 | *size += sizeof(frm->frame); | |
1926 | *size += frm->frame.b_frame_interval_type * sz; | |
1927 | } | |
1928 | break; | |
1929 | } | |
1930 | ||
1931 | ++*count; | |
1932 | ||
1933 | return 0; | |
1934 | } | |
1935 | ||
578d0b6b AP |
1936 | /* |
1937 | * Fill an array of streaming descriptors. | |
1938 | * | |
1939 | * @priv1: pointer to a header, format or frame | |
1940 | * @priv2: inout parameter, pointer into a block of memory | |
1941 | * @priv3: inout parameter, pointer to a 2-dimensional array | |
1942 | */ | |
46919a23 AP |
1943 | static int __uvcg_fill_strm(void *priv1, void *priv2, void *priv3, int n, |
1944 | enum uvcg_strm_type type) | |
1945 | { | |
1946 | void **dest = priv2; | |
1947 | struct uvc_descriptor_header ***array = priv3; | |
1948 | size_t sz; | |
1949 | ||
1950 | **array = *dest; | |
1951 | ++*array; | |
1952 | ||
1953 | switch (type) { | |
1954 | case UVCG_HEADER: { | |
1955 | struct uvc_input_header_descriptor *ihdr = *dest; | |
1956 | struct uvcg_streaming_header *h = priv1; | |
1957 | struct uvcg_format_ptr *f; | |
1958 | ||
1959 | memcpy(*dest, &h->desc, sizeof(h->desc)); | |
1960 | *dest += sizeof(h->desc); | |
1961 | sz = UVCG_STREAMING_CONTROL_SIZE; | |
1962 | list_for_each_entry(f, &h->formats, entry) { | |
1963 | memcpy(*dest, f->fmt->bmaControls, sz); | |
1964 | *dest += sz; | |
1965 | } | |
1966 | ihdr->bLength = sizeof(h->desc) + h->num_fmt * sz; | |
1967 | ihdr->bNumFormats = h->num_fmt; | |
1968 | } | |
1969 | break; | |
1970 | case UVCG_FORMAT: { | |
1971 | struct uvcg_format *fmt = priv1; | |
1972 | ||
1973 | if (fmt->type == UVCG_UNCOMPRESSED) { | |
1974 | struct uvc_format_uncompressed *unc = *dest; | |
1975 | struct uvcg_uncompressed *u = | |
1976 | container_of(fmt, struct uvcg_uncompressed, | |
1977 | fmt); | |
1978 | ||
1979 | memcpy(*dest, &u->desc, sizeof(u->desc)); | |
1980 | *dest += sizeof(u->desc); | |
1981 | unc->bNumFrameDescriptors = fmt->num_frames; | |
1982 | unc->bFormatIndex = n + 1; | |
1983 | } else if (fmt->type == UVCG_MJPEG) { | |
1984 | struct uvc_format_mjpeg *mjp = *dest; | |
1985 | struct uvcg_mjpeg *m = | |
1986 | container_of(fmt, struct uvcg_mjpeg, fmt); | |
1987 | ||
1988 | memcpy(*dest, &m->desc, sizeof(m->desc)); | |
1989 | *dest += sizeof(m->desc); | |
1990 | mjp->bNumFrameDescriptors = fmt->num_frames; | |
1991 | mjp->bFormatIndex = n + 1; | |
1992 | } else { | |
1993 | return -EINVAL; | |
1994 | } | |
1995 | } | |
1996 | break; | |
1997 | case UVCG_FRAME: { | |
1998 | struct uvcg_frame *frm = priv1; | |
1999 | struct uvc_descriptor_header *h = *dest; | |
2000 | ||
2001 | sz = sizeof(frm->frame); | |
2002 | memcpy(*dest, &frm->frame, sz); | |
2003 | *dest += sz; | |
2004 | sz = frm->frame.b_frame_interval_type * | |
2005 | sizeof(*frm->dw_frame_interval); | |
2006 | memcpy(*dest, frm->dw_frame_interval, sz); | |
2007 | *dest += sz; | |
2008 | if (frm->fmt_type == UVCG_UNCOMPRESSED) | |
2009 | h->bLength = UVC_DT_FRAME_UNCOMPRESSED_SIZE( | |
2010 | frm->frame.b_frame_interval_type); | |
2011 | else if (frm->fmt_type == UVCG_MJPEG) | |
2012 | h->bLength = UVC_DT_FRAME_MJPEG_SIZE( | |
2013 | frm->frame.b_frame_interval_type); | |
2014 | } | |
2015 | break; | |
2016 | } | |
2017 | ||
2018 | return 0; | |
2019 | } | |
2020 | ||
2021 | static int uvcg_streaming_class_allow_link(struct config_item *src, | |
2022 | struct config_item *target) | |
2023 | { | |
2024 | struct config_item *streaming, *header; | |
2025 | struct f_uvc_opts *opts; | |
2026 | struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex; | |
2027 | struct uvc_descriptor_header ***class_array, **cl_arr; | |
2028 | struct uvcg_streaming_header *target_hdr; | |
06ab8b04 | 2029 | void *data, *data_save; |
46919a23 AP |
2030 | size_t size = 0, count = 0; |
2031 | int ret = -EINVAL; | |
2032 | ||
2033 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
2034 | ||
2035 | streaming = src->ci_parent->ci_parent; | |
2036 | header = config_group_find_item(to_config_group(streaming), "header"); | |
2037 | if (!header || target->ci_parent != header) | |
2038 | goto out; | |
2039 | ||
2040 | opts = to_f_uvc_opts(streaming->ci_parent); | |
2041 | ||
2042 | mutex_lock(&opts->lock); | |
2043 | ||
2044 | class_array = __uvcg_get_stream_class_arr(src, opts); | |
2045 | if (!class_array || *class_array || opts->refcnt) { | |
2046 | ret = -EBUSY; | |
2047 | goto unlock; | |
2048 | } | |
2049 | ||
2050 | target_hdr = to_uvcg_streaming_header(target); | |
2051 | ret = __uvcg_iter_strm_cls(target_hdr, &size, &count, __uvcg_cnt_strm); | |
2052 | if (ret) | |
2053 | goto unlock; | |
2054 | ||
2055 | count += 2; /* color_matching, NULL */ | |
2056 | *class_array = kcalloc(count, sizeof(void *), GFP_KERNEL); | |
2057 | if (!*class_array) { | |
df90f838 | 2058 | ret = -ENOMEM; |
46919a23 AP |
2059 | goto unlock; |
2060 | } | |
2061 | ||
06ab8b04 | 2062 | data = data_save = kzalloc(size, GFP_KERNEL); |
46919a23 AP |
2063 | if (!data) { |
2064 | kfree(*class_array); | |
2065 | *class_array = NULL; | |
2066 | ret = PTR_ERR(data); | |
2067 | goto unlock; | |
2068 | } | |
2069 | cl_arr = *class_array; | |
2070 | ret = __uvcg_iter_strm_cls(target_hdr, &data, &cl_arr, | |
2071 | __uvcg_fill_strm); | |
2072 | if (ret) { | |
2073 | kfree(*class_array); | |
2074 | *class_array = NULL; | |
06ab8b04 AP |
2075 | /* |
2076 | * __uvcg_fill_strm() called from __uvcg_iter_stream_cls() | |
2077 | * might have advanced the "data", so use a backup copy | |
2078 | */ | |
2079 | kfree(data_save); | |
46919a23 AP |
2080 | goto unlock; |
2081 | } | |
2082 | *cl_arr = (struct uvc_descriptor_header *)&opts->uvc_color_matching; | |
2083 | ||
2084 | ++target_hdr->linked; | |
2085 | ret = 0; | |
2086 | ||
2087 | unlock: | |
2088 | mutex_unlock(&opts->lock); | |
2089 | out: | |
2090 | mutex_unlock(su_mutex); | |
2091 | return ret; | |
2092 | } | |
2093 | ||
2094 | static int uvcg_streaming_class_drop_link(struct config_item *src, | |
2095 | struct config_item *target) | |
2096 | { | |
2097 | struct config_item *streaming, *header; | |
2098 | struct f_uvc_opts *opts; | |
2099 | struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex; | |
2100 | struct uvc_descriptor_header ***class_array; | |
2101 | struct uvcg_streaming_header *target_hdr; | |
2102 | int ret = -EINVAL; | |
2103 | ||
2104 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
2105 | ||
2106 | streaming = src->ci_parent->ci_parent; | |
2107 | header = config_group_find_item(to_config_group(streaming), "header"); | |
2108 | if (!header || target->ci_parent != header) | |
2109 | goto out; | |
2110 | ||
2111 | opts = to_f_uvc_opts(streaming->ci_parent); | |
2112 | ||
2113 | mutex_lock(&opts->lock); | |
2114 | ||
2115 | class_array = __uvcg_get_stream_class_arr(src, opts); | |
2116 | if (!class_array || !*class_array) | |
2117 | goto unlock; | |
2118 | ||
2119 | if (opts->refcnt) { | |
2120 | ret = -EBUSY; | |
2121 | goto unlock; | |
2122 | } | |
2123 | ||
2124 | target_hdr = to_uvcg_streaming_header(target); | |
2125 | --target_hdr->linked; | |
2126 | kfree(**class_array); | |
2127 | kfree(*class_array); | |
2128 | *class_array = NULL; | |
2129 | ret = 0; | |
2130 | ||
2131 | unlock: | |
2132 | mutex_unlock(&opts->lock); | |
2133 | out: | |
2134 | mutex_unlock(su_mutex); | |
2135 | return ret; | |
2136 | } | |
2137 | ||
2138 | static struct configfs_item_operations uvcg_streaming_class_item_ops = { | |
2139 | .allow_link = uvcg_streaming_class_allow_link, | |
2140 | .drop_link = uvcg_streaming_class_drop_link, | |
2141 | }; | |
2142 | ||
2143 | static struct config_item_type uvcg_streaming_class_type = { | |
2144 | .ct_item_ops = &uvcg_streaming_class_item_ops, | |
2145 | .ct_owner = THIS_MODULE, | |
2146 | }; | |
2147 | ||
2148 | static struct config_group *uvcg_streaming_class_default_groups[] = { | |
2149 | &uvcg_streaming_class_fs.group, | |
2150 | &uvcg_streaming_class_hs.group, | |
2151 | &uvcg_streaming_class_ss.group, | |
2152 | NULL, | |
2153 | }; | |
2154 | ||
2155 | /* streaming/class */ | |
2156 | static struct uvcg_streaming_class_grp { | |
2157 | struct config_group group; | |
2158 | } uvcg_streaming_class_grp; | |
2159 | ||
2160 | static struct config_item_type uvcg_streaming_class_grp_type = { | |
2161 | .ct_owner = THIS_MODULE, | |
2162 | }; | |
2163 | ||
2164 | static struct config_group *uvcg_streaming_default_groups[] = { | |
2165 | &uvcg_streaming_header_grp.group, | |
2166 | &uvcg_uncompressed_grp.group, | |
2167 | &uvcg_mjpeg_grp.group, | |
2168 | &uvcg_color_matching_grp.group, | |
2169 | &uvcg_streaming_class_grp.group, | |
2170 | NULL, | |
2171 | }; | |
2172 | ||
2173 | /* streaming */ | |
2174 | static struct uvcg_streaming_grp { | |
2175 | struct config_group group; | |
2176 | } uvcg_streaming_grp; | |
2177 | ||
2178 | static struct config_item_type uvcg_streaming_grp_type = { | |
2179 | .ct_owner = THIS_MODULE, | |
2180 | }; | |
2181 | ||
2182 | static struct config_group *uvcg_default_groups[] = { | |
2183 | &uvcg_control_grp.group, | |
2184 | &uvcg_streaming_grp.group, | |
2185 | NULL, | |
2186 | }; | |
2187 | ||
2188 | static inline struct f_uvc_opts *to_f_uvc_opts(struct config_item *item) | |
2189 | { | |
2190 | return container_of(to_config_group(item), struct f_uvc_opts, | |
2191 | func_inst.group); | |
2192 | } | |
2193 | ||
46919a23 AP |
2194 | static void uvc_attr_release(struct config_item *item) |
2195 | { | |
2196 | struct f_uvc_opts *opts = to_f_uvc_opts(item); | |
2197 | ||
2198 | usb_put_function_instance(&opts->func_inst); | |
2199 | } | |
2200 | ||
2201 | static struct configfs_item_operations uvc_item_ops = { | |
2202 | .release = uvc_attr_release, | |
46919a23 AP |
2203 | }; |
2204 | ||
2205 | #define UVCG_OPTS_ATTR(cname, conv, str2u, uxx, vnoc, limit) \ | |
2206 | static ssize_t f_uvc_opts_##cname##_show( \ | |
76e0da34 | 2207 | struct config_item *item, char *page) \ |
46919a23 | 2208 | { \ |
76e0da34 | 2209 | struct f_uvc_opts *opts = to_f_uvc_opts(item); \ |
46919a23 AP |
2210 | int result; \ |
2211 | \ | |
2212 | mutex_lock(&opts->lock); \ | |
2213 | result = sprintf(page, "%d\n", conv(opts->cname)); \ | |
2214 | mutex_unlock(&opts->lock); \ | |
2215 | \ | |
2216 | return result; \ | |
2217 | } \ | |
2218 | \ | |
2219 | static ssize_t \ | |
76e0da34 | 2220 | f_uvc_opts_##cname##_store(struct config_item *item, \ |
46919a23 AP |
2221 | const char *page, size_t len) \ |
2222 | { \ | |
76e0da34 | 2223 | struct f_uvc_opts *opts = to_f_uvc_opts(item); \ |
46919a23 AP |
2224 | int ret; \ |
2225 | uxx num; \ | |
2226 | \ | |
2227 | mutex_lock(&opts->lock); \ | |
2228 | if (opts->refcnt) { \ | |
2229 | ret = -EBUSY; \ | |
2230 | goto end; \ | |
2231 | } \ | |
2232 | \ | |
2233 | ret = str2u(page, 0, &num); \ | |
2234 | if (ret) \ | |
2235 | goto end; \ | |
2236 | \ | |
2237 | if (num > limit) { \ | |
2238 | ret = -EINVAL; \ | |
2239 | goto end; \ | |
2240 | } \ | |
2241 | opts->cname = vnoc(num); \ | |
2242 | ret = len; \ | |
2243 | end: \ | |
2244 | mutex_unlock(&opts->lock); \ | |
2245 | return ret; \ | |
2246 | } \ | |
2247 | \ | |
76e0da34 | 2248 | UVC_ATTR(f_uvc_opts_, cname, aname) |
46919a23 AP |
2249 | |
2250 | #define identity_conv(x) (x) | |
2251 | ||
2252 | UVCG_OPTS_ATTR(streaming_interval, identity_conv, kstrtou8, u8, identity_conv, | |
2253 | 16); | |
2254 | UVCG_OPTS_ATTR(streaming_maxpacket, le16_to_cpu, kstrtou16, u16, le16_to_cpu, | |
2255 | 3072); | |
2256 | UVCG_OPTS_ATTR(streaming_maxburst, identity_conv, kstrtou8, u8, identity_conv, | |
2257 | 15); | |
2258 | ||
2259 | #undef identity_conv | |
2260 | ||
2261 | #undef UVCG_OPTS_ATTR | |
2262 | ||
2263 | static struct configfs_attribute *uvc_attrs[] = { | |
76e0da34 CH |
2264 | &f_uvc_opts_attr_streaming_interval, |
2265 | &f_uvc_opts_attr_streaming_maxpacket, | |
2266 | &f_uvc_opts_attr_streaming_maxburst, | |
46919a23 AP |
2267 | NULL, |
2268 | }; | |
2269 | ||
2270 | static struct config_item_type uvc_func_type = { | |
2271 | .ct_item_ops = &uvc_item_ops, | |
2272 | .ct_attrs = uvc_attrs, | |
2273 | .ct_owner = THIS_MODULE, | |
2274 | }; | |
2275 | ||
2276 | static inline void uvcg_init_group(struct config_group *g, | |
2277 | struct config_group **default_groups, | |
2278 | const char *name, | |
2279 | struct config_item_type *type) | |
2280 | { | |
2281 | g->default_groups = default_groups; | |
2282 | config_group_init_type_name(g, name, type); | |
2283 | } | |
2284 | ||
2285 | int uvcg_attach_configfs(struct f_uvc_opts *opts) | |
2286 | { | |
2287 | config_group_init_type_name(&uvcg_control_header_grp.group, | |
2288 | "header", | |
2289 | &uvcg_control_header_grp_type); | |
2290 | config_group_init_type_name(&uvcg_default_processing.group, | |
2291 | "default", | |
2292 | &uvcg_default_processing_type); | |
2293 | uvcg_init_group(&uvcg_processing_grp.group, | |
2294 | uvcg_processing_default_groups, | |
2295 | "processing", | |
2296 | &uvcg_processing_grp_type); | |
2297 | config_group_init_type_name(&uvcg_default_camera.group, | |
2298 | "default", | |
2299 | &uvcg_default_camera_type); | |
2300 | uvcg_init_group(&uvcg_camera_grp.group, | |
2301 | uvcg_camera_default_groups, | |
2302 | "camera", | |
2303 | &uvcg_camera_grp_type); | |
2304 | config_group_init_type_name(&uvcg_default_output.group, | |
2305 | "default", | |
2306 | &uvcg_default_output_type); | |
2307 | uvcg_init_group(&uvcg_output_grp.group, | |
2308 | uvcg_output_default_groups, | |
2309 | "output", | |
2310 | &uvcg_output_grp_type); | |
2311 | uvcg_init_group(&uvcg_terminal_grp.group, | |
2312 | uvcg_terminal_default_groups, | |
2313 | "terminal", | |
2314 | &uvcg_terminal_grp_type); | |
2315 | config_group_init_type_name(&uvcg_control_class_fs.group, | |
2316 | "fs", | |
2317 | &uvcg_control_class_type); | |
2318 | config_group_init_type_name(&uvcg_control_class_ss.group, | |
2319 | "ss", | |
2320 | &uvcg_control_class_type); | |
2321 | uvcg_init_group(&uvcg_control_class_grp.group, | |
2322 | uvcg_control_class_default_groups, | |
2323 | "class", | |
2324 | &uvcg_control_class_grp_type); | |
2325 | uvcg_init_group(&uvcg_control_grp.group, | |
2326 | uvcg_control_default_groups, | |
2327 | "control", | |
2328 | &uvcg_control_grp_type); | |
2329 | config_group_init_type_name(&uvcg_streaming_header_grp.group, | |
2330 | "header", | |
2331 | &uvcg_streaming_header_grp_type); | |
2332 | config_group_init_type_name(&uvcg_uncompressed_grp.group, | |
2333 | "uncompressed", | |
2334 | &uvcg_uncompressed_grp_type); | |
2335 | config_group_init_type_name(&uvcg_mjpeg_grp.group, | |
2336 | "mjpeg", | |
2337 | &uvcg_mjpeg_grp_type); | |
2338 | config_group_init_type_name(&uvcg_default_color_matching.group, | |
2339 | "default", | |
2340 | &uvcg_default_color_matching_type); | |
2341 | uvcg_init_group(&uvcg_color_matching_grp.group, | |
2342 | uvcg_color_matching_default_groups, | |
2343 | "color_matching", | |
2344 | &uvcg_color_matching_grp_type); | |
2345 | config_group_init_type_name(&uvcg_streaming_class_fs.group, | |
2346 | "fs", | |
2347 | &uvcg_streaming_class_type); | |
2348 | config_group_init_type_name(&uvcg_streaming_class_hs.group, | |
2349 | "hs", | |
2350 | &uvcg_streaming_class_type); | |
2351 | config_group_init_type_name(&uvcg_streaming_class_ss.group, | |
2352 | "ss", | |
2353 | &uvcg_streaming_class_type); | |
2354 | uvcg_init_group(&uvcg_streaming_class_grp.group, | |
2355 | uvcg_streaming_class_default_groups, | |
2356 | "class", | |
2357 | &uvcg_streaming_class_grp_type); | |
2358 | uvcg_init_group(&uvcg_streaming_grp.group, | |
2359 | uvcg_streaming_default_groups, | |
2360 | "streaming", | |
2361 | &uvcg_streaming_grp_type); | |
2362 | uvcg_init_group(&opts->func_inst.group, | |
2363 | uvcg_default_groups, | |
2364 | "", | |
2365 | &uvc_func_type); | |
2366 | return 0; | |
2367 | } |