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5fd54ace | 1 | // SPDX-License-Identifier: GPL-2.0 |
46919a23 AP |
2 | /* |
3 | * uvc_configfs.c | |
4 | * | |
5 | * Configfs support for the uvc function. | |
6 | * | |
7 | * Copyright (c) 2014 Samsung Electronics Co., Ltd. | |
8 | * http://www.samsung.com | |
9 | * | |
10 | * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com> | |
46919a23 AP |
11 | */ |
12 | #include "u_uvc.h" | |
13 | #include "uvc_configfs.h" | |
14 | ||
15 | #define UVCG_STREAMING_CONTROL_SIZE 1 | |
16 | ||
76e0da34 CH |
17 | #define UVC_ATTR(prefix, cname, aname) \ |
18 | static struct configfs_attribute prefix##attr_##cname = { \ | |
19 | .ca_name = __stringify(aname), \ | |
27681abc | 20 | .ca_mode = S_IRUGO | S_IWUGO, \ |
76e0da34 CH |
21 | .ca_owner = THIS_MODULE, \ |
22 | .show = prefix##cname##_show, \ | |
23 | .store = prefix##cname##_store, \ | |
24 | } | |
25 | ||
26 | #define UVC_ATTR_RO(prefix, cname, aname) \ | |
27 | static struct configfs_attribute prefix##attr_##cname = { \ | |
28 | .ca_name = __stringify(aname), \ | |
29 | .ca_mode = S_IRUGO, \ | |
30 | .ca_owner = THIS_MODULE, \ | |
31 | .show = prefix##cname##_show, \ | |
46919a23 AP |
32 | } |
33 | ||
34 | static inline struct f_uvc_opts *to_f_uvc_opts(struct config_item *item); | |
35 | ||
36 | /* control/header/<NAME> */ | |
37 | DECLARE_UVC_HEADER_DESCRIPTOR(1); | |
38 | ||
39 | struct uvcg_control_header { | |
40 | struct config_item item; | |
41 | struct UVC_HEADER_DESCRIPTOR(1) desc; | |
42 | unsigned linked; | |
43 | }; | |
44 | ||
f093a2d4 | 45 | static struct uvcg_control_header *to_uvcg_control_header(struct config_item *item) |
46919a23 AP |
46 | { |
47 | return container_of(item, struct uvcg_control_header, item); | |
48 | } | |
49 | ||
46919a23 AP |
50 | #define UVCG_CTRL_HDR_ATTR(cname, aname, conv, str2u, uxx, vnoc, limit) \ |
51 | static ssize_t uvcg_control_header_##cname##_show( \ | |
76e0da34 | 52 | struct config_item *item, char *page) \ |
46919a23 | 53 | { \ |
76e0da34 | 54 | struct uvcg_control_header *ch = to_uvcg_control_header(item); \ |
46919a23 AP |
55 | struct f_uvc_opts *opts; \ |
56 | struct config_item *opts_item; \ | |
57 | struct mutex *su_mutex = &ch->item.ci_group->cg_subsys->su_mutex;\ | |
58 | int result; \ | |
59 | \ | |
60 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
61 | \ | |
62 | opts_item = ch->item.ci_parent->ci_parent->ci_parent; \ | |
63 | opts = to_f_uvc_opts(opts_item); \ | |
64 | \ | |
65 | mutex_lock(&opts->lock); \ | |
66 | result = sprintf(page, "%d\n", conv(ch->desc.aname)); \ | |
67 | mutex_unlock(&opts->lock); \ | |
68 | \ | |
69 | mutex_unlock(su_mutex); \ | |
70 | return result; \ | |
71 | } \ | |
72 | \ | |
73 | static ssize_t \ | |
76e0da34 | 74 | uvcg_control_header_##cname##_store(struct config_item *item, \ |
46919a23 AP |
75 | const char *page, size_t len) \ |
76 | { \ | |
76e0da34 | 77 | struct uvcg_control_header *ch = to_uvcg_control_header(item); \ |
46919a23 AP |
78 | struct f_uvc_opts *opts; \ |
79 | struct config_item *opts_item; \ | |
80 | struct mutex *su_mutex = &ch->item.ci_group->cg_subsys->su_mutex;\ | |
81 | int ret; \ | |
82 | uxx num; \ | |
83 | \ | |
84 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
85 | \ | |
86 | opts_item = ch->item.ci_parent->ci_parent->ci_parent; \ | |
87 | opts = to_f_uvc_opts(opts_item); \ | |
88 | \ | |
89 | mutex_lock(&opts->lock); \ | |
90 | if (ch->linked || opts->refcnt) { \ | |
91 | ret = -EBUSY; \ | |
92 | goto end; \ | |
93 | } \ | |
94 | \ | |
95 | ret = str2u(page, 0, &num); \ | |
96 | if (ret) \ | |
97 | goto end; \ | |
98 | \ | |
99 | if (num > limit) { \ | |
100 | ret = -EINVAL; \ | |
101 | goto end; \ | |
102 | } \ | |
103 | ch->desc.aname = vnoc(num); \ | |
104 | ret = len; \ | |
105 | end: \ | |
106 | mutex_unlock(&opts->lock); \ | |
107 | mutex_unlock(su_mutex); \ | |
108 | return ret; \ | |
109 | } \ | |
110 | \ | |
76e0da34 | 111 | UVC_ATTR(uvcg_control_header_, cname, aname) |
46919a23 AP |
112 | |
113 | UVCG_CTRL_HDR_ATTR(bcd_uvc, bcdUVC, le16_to_cpu, kstrtou16, u16, cpu_to_le16, | |
114 | 0xffff); | |
115 | ||
116 | UVCG_CTRL_HDR_ATTR(dw_clock_frequency, dwClockFrequency, le32_to_cpu, kstrtou32, | |
117 | u32, cpu_to_le32, 0x7fffffff); | |
118 | ||
119 | #undef UVCG_CTRL_HDR_ATTR | |
120 | ||
121 | static struct configfs_attribute *uvcg_control_header_attrs[] = { | |
76e0da34 CH |
122 | &uvcg_control_header_attr_bcd_uvc, |
123 | &uvcg_control_header_attr_dw_clock_frequency, | |
46919a23 AP |
124 | NULL, |
125 | }; | |
126 | ||
97363902 | 127 | static const struct config_item_type uvcg_control_header_type = { |
46919a23 AP |
128 | .ct_attrs = uvcg_control_header_attrs, |
129 | .ct_owner = THIS_MODULE, | |
130 | }; | |
131 | ||
132 | static struct config_item *uvcg_control_header_make(struct config_group *group, | |
133 | const char *name) | |
134 | { | |
135 | struct uvcg_control_header *h; | |
136 | ||
137 | h = kzalloc(sizeof(*h), GFP_KERNEL); | |
138 | if (!h) | |
df90f838 | 139 | return ERR_PTR(-ENOMEM); |
46919a23 AP |
140 | |
141 | h->desc.bLength = UVC_DT_HEADER_SIZE(1); | |
142 | h->desc.bDescriptorType = USB_DT_CS_INTERFACE; | |
143 | h->desc.bDescriptorSubType = UVC_VC_HEADER; | |
144 | h->desc.bcdUVC = cpu_to_le16(0x0100); | |
145 | h->desc.dwClockFrequency = cpu_to_le32(48000000); | |
146 | ||
147 | config_item_init_type_name(&h->item, name, &uvcg_control_header_type); | |
148 | ||
149 | return &h->item; | |
150 | } | |
151 | ||
f093a2d4 | 152 | static void uvcg_control_header_drop(struct config_group *group, |
46919a23 AP |
153 | struct config_item *item) |
154 | { | |
155 | struct uvcg_control_header *h = to_uvcg_control_header(item); | |
156 | ||
157 | kfree(h); | |
158 | } | |
159 | ||
160 | /* control/header */ | |
161 | static struct uvcg_control_header_grp { | |
162 | struct config_group group; | |
163 | } uvcg_control_header_grp; | |
164 | ||
165 | static struct configfs_group_operations uvcg_control_header_grp_ops = { | |
166 | .make_item = uvcg_control_header_make, | |
167 | .drop_item = uvcg_control_header_drop, | |
168 | }; | |
169 | ||
97363902 | 170 | static const struct config_item_type uvcg_control_header_grp_type = { |
46919a23 AP |
171 | .ct_group_ops = &uvcg_control_header_grp_ops, |
172 | .ct_owner = THIS_MODULE, | |
173 | }; | |
174 | ||
175 | /* control/processing/default */ | |
176 | static struct uvcg_default_processing { | |
177 | struct config_group group; | |
178 | } uvcg_default_processing; | |
179 | ||
180 | static inline struct uvcg_default_processing | |
181 | *to_uvcg_default_processing(struct config_item *item) | |
182 | { | |
183 | return container_of(to_config_group(item), | |
184 | struct uvcg_default_processing, group); | |
185 | } | |
186 | ||
46919a23 AP |
187 | #define UVCG_DEFAULT_PROCESSING_ATTR(cname, aname, conv) \ |
188 | static ssize_t uvcg_default_processing_##cname##_show( \ | |
76e0da34 | 189 | struct config_item *item, char *page) \ |
46919a23 | 190 | { \ |
76e0da34 | 191 | struct uvcg_default_processing *dp = to_uvcg_default_processing(item); \ |
46919a23 AP |
192 | struct f_uvc_opts *opts; \ |
193 | struct config_item *opts_item; \ | |
194 | struct mutex *su_mutex = &dp->group.cg_subsys->su_mutex; \ | |
195 | struct uvc_processing_unit_descriptor *pd; \ | |
196 | int result; \ | |
197 | \ | |
198 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
199 | \ | |
200 | opts_item = dp->group.cg_item.ci_parent->ci_parent->ci_parent; \ | |
201 | opts = to_f_uvc_opts(opts_item); \ | |
202 | pd = &opts->uvc_processing; \ | |
203 | \ | |
204 | mutex_lock(&opts->lock); \ | |
205 | result = sprintf(page, "%d\n", conv(pd->aname)); \ | |
206 | mutex_unlock(&opts->lock); \ | |
207 | \ | |
208 | mutex_unlock(su_mutex); \ | |
209 | return result; \ | |
210 | } \ | |
211 | \ | |
76e0da34 | 212 | UVC_ATTR_RO(uvcg_default_processing_, cname, aname) |
46919a23 AP |
213 | |
214 | #define identity_conv(x) (x) | |
215 | ||
216 | UVCG_DEFAULT_PROCESSING_ATTR(b_unit_id, bUnitID, identity_conv); | |
217 | UVCG_DEFAULT_PROCESSING_ATTR(b_source_id, bSourceID, identity_conv); | |
218 | UVCG_DEFAULT_PROCESSING_ATTR(w_max_multiplier, wMaxMultiplier, le16_to_cpu); | |
219 | UVCG_DEFAULT_PROCESSING_ATTR(i_processing, iProcessing, identity_conv); | |
220 | ||
221 | #undef identity_conv | |
222 | ||
223 | #undef UVCG_DEFAULT_PROCESSING_ATTR | |
224 | ||
225 | static ssize_t uvcg_default_processing_bm_controls_show( | |
76e0da34 | 226 | struct config_item *item, char *page) |
46919a23 | 227 | { |
76e0da34 | 228 | struct uvcg_default_processing *dp = to_uvcg_default_processing(item); |
46919a23 AP |
229 | struct f_uvc_opts *opts; |
230 | struct config_item *opts_item; | |
231 | struct mutex *su_mutex = &dp->group.cg_subsys->su_mutex; | |
232 | struct uvc_processing_unit_descriptor *pd; | |
233 | int result, i; | |
234 | char *pg = page; | |
235 | ||
236 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
237 | ||
238 | opts_item = dp->group.cg_item.ci_parent->ci_parent->ci_parent; | |
239 | opts = to_f_uvc_opts(opts_item); | |
240 | pd = &opts->uvc_processing; | |
241 | ||
242 | mutex_lock(&opts->lock); | |
243 | for (result = 0, i = 0; i < pd->bControlSize; ++i) { | |
244 | result += sprintf(pg, "%d\n", pd->bmControls[i]); | |
245 | pg = page + result; | |
246 | } | |
247 | mutex_unlock(&opts->lock); | |
248 | ||
249 | mutex_unlock(su_mutex); | |
250 | ||
251 | return result; | |
252 | } | |
253 | ||
76e0da34 | 254 | UVC_ATTR_RO(uvcg_default_processing_, bm_controls, bmControls); |
46919a23 AP |
255 | |
256 | static struct configfs_attribute *uvcg_default_processing_attrs[] = { | |
76e0da34 CH |
257 | &uvcg_default_processing_attr_b_unit_id, |
258 | &uvcg_default_processing_attr_b_source_id, | |
259 | &uvcg_default_processing_attr_w_max_multiplier, | |
260 | &uvcg_default_processing_attr_bm_controls, | |
261 | &uvcg_default_processing_attr_i_processing, | |
46919a23 AP |
262 | NULL, |
263 | }; | |
264 | ||
97363902 | 265 | static const struct config_item_type uvcg_default_processing_type = { |
46919a23 AP |
266 | .ct_attrs = uvcg_default_processing_attrs, |
267 | .ct_owner = THIS_MODULE, | |
268 | }; | |
269 | ||
270 | /* struct uvcg_processing {}; */ | |
271 | ||
46919a23 AP |
272 | /* control/processing */ |
273 | static struct uvcg_processing_grp { | |
274 | struct config_group group; | |
275 | } uvcg_processing_grp; | |
276 | ||
97363902 | 277 | static const struct config_item_type uvcg_processing_grp_type = { |
46919a23 AP |
278 | .ct_owner = THIS_MODULE, |
279 | }; | |
280 | ||
281 | /* control/terminal/camera/default */ | |
282 | static struct uvcg_default_camera { | |
283 | struct config_group group; | |
284 | } uvcg_default_camera; | |
285 | ||
286 | static inline struct uvcg_default_camera | |
287 | *to_uvcg_default_camera(struct config_item *item) | |
288 | { | |
289 | return container_of(to_config_group(item), | |
290 | struct uvcg_default_camera, group); | |
291 | } | |
292 | ||
46919a23 AP |
293 | #define UVCG_DEFAULT_CAMERA_ATTR(cname, aname, conv) \ |
294 | static ssize_t uvcg_default_camera_##cname##_show( \ | |
76e0da34 | 295 | struct config_item *item, char *page) \ |
46919a23 | 296 | { \ |
76e0da34 | 297 | struct uvcg_default_camera *dc = to_uvcg_default_camera(item); \ |
46919a23 AP |
298 | struct f_uvc_opts *opts; \ |
299 | struct config_item *opts_item; \ | |
300 | struct mutex *su_mutex = &dc->group.cg_subsys->su_mutex; \ | |
301 | struct uvc_camera_terminal_descriptor *cd; \ | |
302 | int result; \ | |
303 | \ | |
304 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
305 | \ | |
306 | opts_item = dc->group.cg_item.ci_parent->ci_parent->ci_parent-> \ | |
307 | ci_parent; \ | |
308 | opts = to_f_uvc_opts(opts_item); \ | |
309 | cd = &opts->uvc_camera_terminal; \ | |
310 | \ | |
311 | mutex_lock(&opts->lock); \ | |
312 | result = sprintf(page, "%d\n", conv(cd->aname)); \ | |
313 | mutex_unlock(&opts->lock); \ | |
314 | \ | |
315 | mutex_unlock(su_mutex); \ | |
316 | \ | |
317 | return result; \ | |
318 | } \ | |
319 | \ | |
76e0da34 | 320 | UVC_ATTR_RO(uvcg_default_camera_, cname, aname) |
46919a23 AP |
321 | |
322 | #define identity_conv(x) (x) | |
323 | ||
324 | UVCG_DEFAULT_CAMERA_ATTR(b_terminal_id, bTerminalID, identity_conv); | |
325 | UVCG_DEFAULT_CAMERA_ATTR(w_terminal_type, wTerminalType, le16_to_cpu); | |
326 | UVCG_DEFAULT_CAMERA_ATTR(b_assoc_terminal, bAssocTerminal, identity_conv); | |
327 | UVCG_DEFAULT_CAMERA_ATTR(i_terminal, iTerminal, identity_conv); | |
328 | UVCG_DEFAULT_CAMERA_ATTR(w_objective_focal_length_min, wObjectiveFocalLengthMin, | |
329 | le16_to_cpu); | |
330 | UVCG_DEFAULT_CAMERA_ATTR(w_objective_focal_length_max, wObjectiveFocalLengthMax, | |
331 | le16_to_cpu); | |
332 | UVCG_DEFAULT_CAMERA_ATTR(w_ocular_focal_length, wOcularFocalLength, | |
333 | le16_to_cpu); | |
334 | ||
335 | #undef identity_conv | |
336 | ||
337 | #undef UVCG_DEFAULT_CAMERA_ATTR | |
338 | ||
339 | static ssize_t uvcg_default_camera_bm_controls_show( | |
76e0da34 | 340 | struct config_item *item, char *page) |
46919a23 | 341 | { |
76e0da34 | 342 | struct uvcg_default_camera *dc = to_uvcg_default_camera(item); |
46919a23 AP |
343 | struct f_uvc_opts *opts; |
344 | struct config_item *opts_item; | |
345 | struct mutex *su_mutex = &dc->group.cg_subsys->su_mutex; | |
346 | struct uvc_camera_terminal_descriptor *cd; | |
347 | int result, i; | |
348 | char *pg = page; | |
349 | ||
350 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
351 | ||
352 | opts_item = dc->group.cg_item.ci_parent->ci_parent->ci_parent-> | |
353 | ci_parent; | |
354 | opts = to_f_uvc_opts(opts_item); | |
355 | cd = &opts->uvc_camera_terminal; | |
356 | ||
357 | mutex_lock(&opts->lock); | |
358 | for (result = 0, i = 0; i < cd->bControlSize; ++i) { | |
359 | result += sprintf(pg, "%d\n", cd->bmControls[i]); | |
360 | pg = page + result; | |
361 | } | |
362 | mutex_unlock(&opts->lock); | |
363 | ||
364 | mutex_unlock(su_mutex); | |
365 | return result; | |
366 | } | |
367 | ||
76e0da34 | 368 | UVC_ATTR_RO(uvcg_default_camera_, bm_controls, bmControls); |
46919a23 AP |
369 | |
370 | static struct configfs_attribute *uvcg_default_camera_attrs[] = { | |
76e0da34 CH |
371 | &uvcg_default_camera_attr_b_terminal_id, |
372 | &uvcg_default_camera_attr_w_terminal_type, | |
373 | &uvcg_default_camera_attr_b_assoc_terminal, | |
374 | &uvcg_default_camera_attr_i_terminal, | |
375 | &uvcg_default_camera_attr_w_objective_focal_length_min, | |
376 | &uvcg_default_camera_attr_w_objective_focal_length_max, | |
377 | &uvcg_default_camera_attr_w_ocular_focal_length, | |
378 | &uvcg_default_camera_attr_bm_controls, | |
46919a23 AP |
379 | NULL, |
380 | }; | |
381 | ||
97363902 | 382 | static const struct config_item_type uvcg_default_camera_type = { |
46919a23 AP |
383 | .ct_attrs = uvcg_default_camera_attrs, |
384 | .ct_owner = THIS_MODULE, | |
385 | }; | |
386 | ||
387 | /* struct uvcg_camera {}; */ | |
388 | ||
46919a23 AP |
389 | /* control/terminal/camera */ |
390 | static struct uvcg_camera_grp { | |
391 | struct config_group group; | |
392 | } uvcg_camera_grp; | |
393 | ||
97363902 | 394 | static const struct config_item_type uvcg_camera_grp_type = { |
46919a23 AP |
395 | .ct_owner = THIS_MODULE, |
396 | }; | |
397 | ||
398 | /* control/terminal/output/default */ | |
399 | static struct uvcg_default_output { | |
400 | struct config_group group; | |
401 | } uvcg_default_output; | |
402 | ||
403 | static inline struct uvcg_default_output | |
404 | *to_uvcg_default_output(struct config_item *item) | |
405 | { | |
406 | return container_of(to_config_group(item), | |
407 | struct uvcg_default_output, group); | |
408 | } | |
409 | ||
46919a23 AP |
410 | #define UVCG_DEFAULT_OUTPUT_ATTR(cname, aname, conv) \ |
411 | static ssize_t uvcg_default_output_##cname##_show( \ | |
76e0da34 | 412 | struct config_item *item, char *page) \ |
46919a23 | 413 | { \ |
76e0da34 | 414 | struct uvcg_default_output *dout = to_uvcg_default_output(item); \ |
46919a23 AP |
415 | struct f_uvc_opts *opts; \ |
416 | struct config_item *opts_item; \ | |
417 | struct mutex *su_mutex = &dout->group.cg_subsys->su_mutex; \ | |
418 | struct uvc_output_terminal_descriptor *cd; \ | |
419 | int result; \ | |
420 | \ | |
421 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
422 | \ | |
423 | opts_item = dout->group.cg_item.ci_parent->ci_parent-> \ | |
424 | ci_parent->ci_parent; \ | |
425 | opts = to_f_uvc_opts(opts_item); \ | |
426 | cd = &opts->uvc_output_terminal; \ | |
427 | \ | |
428 | mutex_lock(&opts->lock); \ | |
429 | result = sprintf(page, "%d\n", conv(cd->aname)); \ | |
430 | mutex_unlock(&opts->lock); \ | |
431 | \ | |
432 | mutex_unlock(su_mutex); \ | |
433 | \ | |
434 | return result; \ | |
435 | } \ | |
436 | \ | |
76e0da34 | 437 | UVC_ATTR_RO(uvcg_default_output_, cname, aname) |
46919a23 AP |
438 | |
439 | #define identity_conv(x) (x) | |
440 | ||
441 | UVCG_DEFAULT_OUTPUT_ATTR(b_terminal_id, bTerminalID, identity_conv); | |
442 | UVCG_DEFAULT_OUTPUT_ATTR(w_terminal_type, wTerminalType, le16_to_cpu); | |
443 | UVCG_DEFAULT_OUTPUT_ATTR(b_assoc_terminal, bAssocTerminal, identity_conv); | |
444 | UVCG_DEFAULT_OUTPUT_ATTR(b_source_id, bSourceID, identity_conv); | |
445 | UVCG_DEFAULT_OUTPUT_ATTR(i_terminal, iTerminal, identity_conv); | |
446 | ||
447 | #undef identity_conv | |
448 | ||
449 | #undef UVCG_DEFAULT_OUTPUT_ATTR | |
450 | ||
451 | static struct configfs_attribute *uvcg_default_output_attrs[] = { | |
76e0da34 CH |
452 | &uvcg_default_output_attr_b_terminal_id, |
453 | &uvcg_default_output_attr_w_terminal_type, | |
454 | &uvcg_default_output_attr_b_assoc_terminal, | |
455 | &uvcg_default_output_attr_b_source_id, | |
456 | &uvcg_default_output_attr_i_terminal, | |
46919a23 AP |
457 | NULL, |
458 | }; | |
459 | ||
97363902 | 460 | static const struct config_item_type uvcg_default_output_type = { |
46919a23 AP |
461 | .ct_attrs = uvcg_default_output_attrs, |
462 | .ct_owner = THIS_MODULE, | |
463 | }; | |
464 | ||
465 | /* struct uvcg_output {}; */ | |
466 | ||
46919a23 AP |
467 | /* control/terminal/output */ |
468 | static struct uvcg_output_grp { | |
469 | struct config_group group; | |
470 | } uvcg_output_grp; | |
471 | ||
97363902 | 472 | static const struct config_item_type uvcg_output_grp_type = { |
46919a23 AP |
473 | .ct_owner = THIS_MODULE, |
474 | }; | |
475 | ||
46919a23 AP |
476 | /* control/terminal */ |
477 | static struct uvcg_terminal_grp { | |
478 | struct config_group group; | |
479 | } uvcg_terminal_grp; | |
480 | ||
97363902 | 481 | static const struct config_item_type uvcg_terminal_grp_type = { |
46919a23 AP |
482 | .ct_owner = THIS_MODULE, |
483 | }; | |
484 | ||
485 | /* control/class/{fs} */ | |
486 | static struct uvcg_control_class { | |
487 | struct config_group group; | |
488 | } uvcg_control_class_fs, uvcg_control_class_ss; | |
489 | ||
490 | ||
491 | static inline struct uvc_descriptor_header | |
492 | **uvcg_get_ctl_class_arr(struct config_item *i, struct f_uvc_opts *o) | |
493 | { | |
494 | struct uvcg_control_class *cl = container_of(to_config_group(i), | |
495 | struct uvcg_control_class, group); | |
496 | ||
497 | if (cl == &uvcg_control_class_fs) | |
498 | return o->uvc_fs_control_cls; | |
499 | ||
500 | if (cl == &uvcg_control_class_ss) | |
501 | return o->uvc_ss_control_cls; | |
502 | ||
503 | return NULL; | |
504 | } | |
505 | ||
506 | static int uvcg_control_class_allow_link(struct config_item *src, | |
507 | struct config_item *target) | |
508 | { | |
509 | struct config_item *control, *header; | |
510 | struct f_uvc_opts *opts; | |
511 | struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex; | |
512 | struct uvc_descriptor_header **class_array; | |
513 | struct uvcg_control_header *target_hdr; | |
514 | int ret = -EINVAL; | |
515 | ||
516 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
517 | ||
518 | control = src->ci_parent->ci_parent; | |
519 | header = config_group_find_item(to_config_group(control), "header"); | |
520 | if (!header || target->ci_parent != header) | |
521 | goto out; | |
522 | ||
523 | opts = to_f_uvc_opts(control->ci_parent); | |
524 | ||
525 | mutex_lock(&opts->lock); | |
526 | ||
527 | class_array = uvcg_get_ctl_class_arr(src, opts); | |
528 | if (!class_array) | |
529 | goto unlock; | |
530 | if (opts->refcnt || class_array[0]) { | |
531 | ret = -EBUSY; | |
532 | goto unlock; | |
533 | } | |
534 | ||
535 | target_hdr = to_uvcg_control_header(target); | |
536 | ++target_hdr->linked; | |
537 | class_array[0] = (struct uvc_descriptor_header *)&target_hdr->desc; | |
538 | ret = 0; | |
539 | ||
540 | unlock: | |
541 | mutex_unlock(&opts->lock); | |
542 | out: | |
543 | mutex_unlock(su_mutex); | |
544 | return ret; | |
545 | } | |
546 | ||
e16769d4 | 547 | static void uvcg_control_class_drop_link(struct config_item *src, |
46919a23 AP |
548 | struct config_item *target) |
549 | { | |
550 | struct config_item *control, *header; | |
551 | struct f_uvc_opts *opts; | |
552 | struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex; | |
553 | struct uvc_descriptor_header **class_array; | |
554 | struct uvcg_control_header *target_hdr; | |
46919a23 AP |
555 | |
556 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
557 | ||
558 | control = src->ci_parent->ci_parent; | |
559 | header = config_group_find_item(to_config_group(control), "header"); | |
560 | if (!header || target->ci_parent != header) | |
561 | goto out; | |
562 | ||
563 | opts = to_f_uvc_opts(control->ci_parent); | |
564 | ||
565 | mutex_lock(&opts->lock); | |
566 | ||
567 | class_array = uvcg_get_ctl_class_arr(src, opts); | |
e16769d4 | 568 | if (!class_array || opts->refcnt) |
46919a23 | 569 | goto unlock; |
46919a23 AP |
570 | |
571 | target_hdr = to_uvcg_control_header(target); | |
572 | --target_hdr->linked; | |
573 | class_array[0] = NULL; | |
46919a23 AP |
574 | |
575 | unlock: | |
576 | mutex_unlock(&opts->lock); | |
577 | out: | |
578 | mutex_unlock(su_mutex); | |
46919a23 AP |
579 | } |
580 | ||
581 | static struct configfs_item_operations uvcg_control_class_item_ops = { | |
582 | .allow_link = uvcg_control_class_allow_link, | |
583 | .drop_link = uvcg_control_class_drop_link, | |
584 | }; | |
585 | ||
97363902 | 586 | static const struct config_item_type uvcg_control_class_type = { |
46919a23 AP |
587 | .ct_item_ops = &uvcg_control_class_item_ops, |
588 | .ct_owner = THIS_MODULE, | |
589 | }; | |
590 | ||
46919a23 AP |
591 | /* control/class */ |
592 | static struct uvcg_control_class_grp { | |
593 | struct config_group group; | |
594 | } uvcg_control_class_grp; | |
595 | ||
97363902 | 596 | static const struct config_item_type uvcg_control_class_grp_type = { |
46919a23 AP |
597 | .ct_owner = THIS_MODULE, |
598 | }; | |
599 | ||
46919a23 AP |
600 | /* control */ |
601 | static struct uvcg_control_grp { | |
602 | struct config_group group; | |
603 | } uvcg_control_grp; | |
604 | ||
97363902 | 605 | static const struct config_item_type uvcg_control_grp_type = { |
46919a23 AP |
606 | .ct_owner = THIS_MODULE, |
607 | }; | |
608 | ||
609 | /* streaming/uncompressed */ | |
610 | static struct uvcg_uncompressed_grp { | |
611 | struct config_group group; | |
612 | } uvcg_uncompressed_grp; | |
613 | ||
614 | /* streaming/mjpeg */ | |
615 | static struct uvcg_mjpeg_grp { | |
616 | struct config_group group; | |
617 | } uvcg_mjpeg_grp; | |
618 | ||
619 | static struct config_item *fmt_parent[] = { | |
620 | &uvcg_uncompressed_grp.group.cg_item, | |
621 | &uvcg_mjpeg_grp.group.cg_item, | |
622 | }; | |
623 | ||
624 | enum uvcg_format_type { | |
625 | UVCG_UNCOMPRESSED = 0, | |
626 | UVCG_MJPEG, | |
627 | }; | |
628 | ||
629 | struct uvcg_format { | |
630 | struct config_group group; | |
631 | enum uvcg_format_type type; | |
632 | unsigned linked; | |
633 | unsigned num_frames; | |
634 | __u8 bmaControls[UVCG_STREAMING_CONTROL_SIZE]; | |
635 | }; | |
636 | ||
f093a2d4 | 637 | static struct uvcg_format *to_uvcg_format(struct config_item *item) |
46919a23 AP |
638 | { |
639 | return container_of(to_config_group(item), struct uvcg_format, group); | |
640 | } | |
641 | ||
642 | static ssize_t uvcg_format_bma_controls_show(struct uvcg_format *f, char *page) | |
643 | { | |
644 | struct f_uvc_opts *opts; | |
645 | struct config_item *opts_item; | |
646 | struct mutex *su_mutex = &f->group.cg_subsys->su_mutex; | |
647 | int result, i; | |
648 | char *pg = page; | |
649 | ||
650 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
651 | ||
652 | opts_item = f->group.cg_item.ci_parent->ci_parent->ci_parent; | |
653 | opts = to_f_uvc_opts(opts_item); | |
654 | ||
655 | mutex_lock(&opts->lock); | |
656 | result = sprintf(pg, "0x"); | |
657 | pg += result; | |
658 | for (i = 0; i < UVCG_STREAMING_CONTROL_SIZE; ++i) { | |
659 | result += sprintf(pg, "%x\n", f->bmaControls[i]); | |
660 | pg = page + result; | |
661 | } | |
662 | mutex_unlock(&opts->lock); | |
663 | ||
664 | mutex_unlock(su_mutex); | |
665 | return result; | |
666 | } | |
667 | ||
668 | static ssize_t uvcg_format_bma_controls_store(struct uvcg_format *ch, | |
669 | const char *page, size_t len) | |
670 | { | |
671 | struct f_uvc_opts *opts; | |
672 | struct config_item *opts_item; | |
673 | struct mutex *su_mutex = &ch->group.cg_subsys->su_mutex; | |
674 | int ret = -EINVAL; | |
675 | ||
676 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
677 | ||
678 | opts_item = ch->group.cg_item.ci_parent->ci_parent->ci_parent; | |
679 | opts = to_f_uvc_opts(opts_item); | |
680 | ||
681 | mutex_lock(&opts->lock); | |
682 | if (ch->linked || opts->refcnt) { | |
683 | ret = -EBUSY; | |
684 | goto end; | |
685 | } | |
686 | ||
687 | if (len < 4 || *page != '0' || | |
688 | (*(page + 1) != 'x' && *(page + 1) != 'X')) | |
689 | goto end; | |
690 | ret = hex2bin(ch->bmaControls, page + 2, 1); | |
691 | if (ret < 0) | |
692 | goto end; | |
693 | ret = len; | |
694 | end: | |
695 | mutex_unlock(&opts->lock); | |
696 | mutex_unlock(su_mutex); | |
697 | return ret; | |
698 | } | |
699 | ||
700 | struct uvcg_format_ptr { | |
701 | struct uvcg_format *fmt; | |
702 | struct list_head entry; | |
703 | }; | |
704 | ||
705 | /* streaming/header/<NAME> */ | |
706 | struct uvcg_streaming_header { | |
707 | struct config_item item; | |
708 | struct uvc_input_header_descriptor desc; | |
709 | unsigned linked; | |
710 | struct list_head formats; | |
711 | unsigned num_fmt; | |
712 | }; | |
713 | ||
f093a2d4 | 714 | static struct uvcg_streaming_header *to_uvcg_streaming_header(struct config_item *item) |
46919a23 AP |
715 | { |
716 | return container_of(item, struct uvcg_streaming_header, item); | |
717 | } | |
718 | ||
46919a23 AP |
719 | static int uvcg_streaming_header_allow_link(struct config_item *src, |
720 | struct config_item *target) | |
721 | { | |
722 | struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex; | |
723 | struct config_item *opts_item; | |
724 | struct f_uvc_opts *opts; | |
725 | struct uvcg_streaming_header *src_hdr; | |
726 | struct uvcg_format *target_fmt = NULL; | |
727 | struct uvcg_format_ptr *format_ptr; | |
728 | int i, ret = -EINVAL; | |
729 | ||
730 | src_hdr = to_uvcg_streaming_header(src); | |
731 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
732 | ||
733 | opts_item = src->ci_parent->ci_parent->ci_parent; | |
734 | opts = to_f_uvc_opts(opts_item); | |
735 | ||
736 | mutex_lock(&opts->lock); | |
737 | ||
738 | if (src_hdr->linked) { | |
739 | ret = -EBUSY; | |
740 | goto out; | |
741 | } | |
742 | ||
743 | for (i = 0; i < ARRAY_SIZE(fmt_parent); ++i) | |
744 | if (target->ci_parent == fmt_parent[i]) | |
745 | break; | |
746 | if (i == ARRAY_SIZE(fmt_parent)) | |
747 | goto out; | |
748 | ||
749 | target_fmt = container_of(to_config_group(target), struct uvcg_format, | |
750 | group); | |
751 | if (!target_fmt) | |
752 | goto out; | |
753 | ||
754 | format_ptr = kzalloc(sizeof(*format_ptr), GFP_KERNEL); | |
755 | if (!format_ptr) { | |
df90f838 | 756 | ret = -ENOMEM; |
46919a23 AP |
757 | goto out; |
758 | } | |
759 | ret = 0; | |
760 | format_ptr->fmt = target_fmt; | |
761 | list_add_tail(&format_ptr->entry, &src_hdr->formats); | |
762 | ++src_hdr->num_fmt; | |
763 | ||
764 | out: | |
765 | mutex_unlock(&opts->lock); | |
766 | mutex_unlock(su_mutex); | |
767 | return ret; | |
768 | } | |
769 | ||
e16769d4 | 770 | static void uvcg_streaming_header_drop_link(struct config_item *src, |
46919a23 AP |
771 | struct config_item *target) |
772 | { | |
773 | struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex; | |
774 | struct config_item *opts_item; | |
775 | struct f_uvc_opts *opts; | |
776 | struct uvcg_streaming_header *src_hdr; | |
777 | struct uvcg_format *target_fmt = NULL; | |
778 | struct uvcg_format_ptr *format_ptr, *tmp; | |
46919a23 AP |
779 | |
780 | src_hdr = to_uvcg_streaming_header(src); | |
781 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
782 | ||
783 | opts_item = src->ci_parent->ci_parent->ci_parent; | |
784 | opts = to_f_uvc_opts(opts_item); | |
785 | ||
786 | mutex_lock(&opts->lock); | |
787 | target_fmt = container_of(to_config_group(target), struct uvcg_format, | |
788 | group); | |
789 | if (!target_fmt) | |
790 | goto out; | |
791 | ||
792 | list_for_each_entry_safe(format_ptr, tmp, &src_hdr->formats, entry) | |
793 | if (format_ptr->fmt == target_fmt) { | |
794 | list_del(&format_ptr->entry); | |
795 | kfree(format_ptr); | |
796 | --src_hdr->num_fmt; | |
797 | break; | |
798 | } | |
799 | ||
800 | out: | |
801 | mutex_unlock(&opts->lock); | |
802 | mutex_unlock(su_mutex); | |
46919a23 AP |
803 | } |
804 | ||
805 | static struct configfs_item_operations uvcg_streaming_header_item_ops = { | |
46919a23 AP |
806 | .allow_link = uvcg_streaming_header_allow_link, |
807 | .drop_link = uvcg_streaming_header_drop_link, | |
808 | }; | |
809 | ||
810 | #define UVCG_STREAMING_HEADER_ATTR(cname, aname, conv) \ | |
811 | static ssize_t uvcg_streaming_header_##cname##_show( \ | |
76e0da34 | 812 | struct config_item *item, char *page) \ |
46919a23 | 813 | { \ |
76e0da34 | 814 | struct uvcg_streaming_header *sh = to_uvcg_streaming_header(item); \ |
46919a23 AP |
815 | struct f_uvc_opts *opts; \ |
816 | struct config_item *opts_item; \ | |
817 | struct mutex *su_mutex = &sh->item.ci_group->cg_subsys->su_mutex;\ | |
818 | int result; \ | |
819 | \ | |
820 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
821 | \ | |
822 | opts_item = sh->item.ci_parent->ci_parent->ci_parent; \ | |
823 | opts = to_f_uvc_opts(opts_item); \ | |
824 | \ | |
825 | mutex_lock(&opts->lock); \ | |
826 | result = sprintf(page, "%d\n", conv(sh->desc.aname)); \ | |
827 | mutex_unlock(&opts->lock); \ | |
828 | \ | |
829 | mutex_unlock(su_mutex); \ | |
830 | return result; \ | |
831 | } \ | |
832 | \ | |
76e0da34 | 833 | UVC_ATTR_RO(uvcg_streaming_header_, cname, aname) |
46919a23 AP |
834 | |
835 | #define identity_conv(x) (x) | |
836 | ||
837 | UVCG_STREAMING_HEADER_ATTR(bm_info, bmInfo, identity_conv); | |
838 | UVCG_STREAMING_HEADER_ATTR(b_terminal_link, bTerminalLink, identity_conv); | |
839 | UVCG_STREAMING_HEADER_ATTR(b_still_capture_method, bStillCaptureMethod, | |
840 | identity_conv); | |
841 | UVCG_STREAMING_HEADER_ATTR(b_trigger_support, bTriggerSupport, identity_conv); | |
842 | UVCG_STREAMING_HEADER_ATTR(b_trigger_usage, bTriggerUsage, identity_conv); | |
843 | ||
844 | #undef identity_conv | |
845 | ||
846 | #undef UVCG_STREAMING_HEADER_ATTR | |
847 | ||
848 | static struct configfs_attribute *uvcg_streaming_header_attrs[] = { | |
76e0da34 CH |
849 | &uvcg_streaming_header_attr_bm_info, |
850 | &uvcg_streaming_header_attr_b_terminal_link, | |
851 | &uvcg_streaming_header_attr_b_still_capture_method, | |
852 | &uvcg_streaming_header_attr_b_trigger_support, | |
853 | &uvcg_streaming_header_attr_b_trigger_usage, | |
46919a23 AP |
854 | NULL, |
855 | }; | |
856 | ||
97363902 | 857 | static const struct config_item_type uvcg_streaming_header_type = { |
46919a23 AP |
858 | .ct_item_ops = &uvcg_streaming_header_item_ops, |
859 | .ct_attrs = uvcg_streaming_header_attrs, | |
860 | .ct_owner = THIS_MODULE, | |
861 | }; | |
862 | ||
863 | static struct config_item | |
864 | *uvcg_streaming_header_make(struct config_group *group, const char *name) | |
865 | { | |
866 | struct uvcg_streaming_header *h; | |
867 | ||
868 | h = kzalloc(sizeof(*h), GFP_KERNEL); | |
869 | if (!h) | |
df90f838 | 870 | return ERR_PTR(-ENOMEM); |
46919a23 AP |
871 | |
872 | INIT_LIST_HEAD(&h->formats); | |
873 | h->desc.bDescriptorType = USB_DT_CS_INTERFACE; | |
874 | h->desc.bDescriptorSubType = UVC_VS_INPUT_HEADER; | |
875 | h->desc.bTerminalLink = 3; | |
876 | h->desc.bControlSize = UVCG_STREAMING_CONTROL_SIZE; | |
877 | ||
878 | config_item_init_type_name(&h->item, name, &uvcg_streaming_header_type); | |
879 | ||
880 | return &h->item; | |
881 | } | |
882 | ||
f093a2d4 | 883 | static void uvcg_streaming_header_drop(struct config_group *group, |
46919a23 AP |
884 | struct config_item *item) |
885 | { | |
886 | struct uvcg_streaming_header *h = to_uvcg_streaming_header(item); | |
887 | ||
888 | kfree(h); | |
889 | } | |
890 | ||
891 | /* streaming/header */ | |
892 | static struct uvcg_streaming_header_grp { | |
893 | struct config_group group; | |
894 | } uvcg_streaming_header_grp; | |
895 | ||
896 | static struct configfs_group_operations uvcg_streaming_header_grp_ops = { | |
897 | .make_item = uvcg_streaming_header_make, | |
898 | .drop_item = uvcg_streaming_header_drop, | |
899 | }; | |
900 | ||
97363902 | 901 | static const struct config_item_type uvcg_streaming_header_grp_type = { |
46919a23 AP |
902 | .ct_group_ops = &uvcg_streaming_header_grp_ops, |
903 | .ct_owner = THIS_MODULE, | |
904 | }; | |
905 | ||
906 | /* streaming/<mode>/<format>/<NAME> */ | |
907 | struct uvcg_frame { | |
908 | struct { | |
909 | u8 b_length; | |
910 | u8 b_descriptor_type; | |
911 | u8 b_descriptor_subtype; | |
912 | u8 b_frame_index; | |
913 | u8 bm_capabilities; | |
914 | u16 w_width; | |
915 | u16 w_height; | |
916 | u32 dw_min_bit_rate; | |
917 | u32 dw_max_bit_rate; | |
918 | u32 dw_max_video_frame_buffer_size; | |
919 | u32 dw_default_frame_interval; | |
920 | u8 b_frame_interval_type; | |
921 | } __attribute__((packed)) frame; | |
922 | u32 *dw_frame_interval; | |
923 | enum uvcg_format_type fmt_type; | |
924 | struct config_item item; | |
925 | }; | |
926 | ||
f093a2d4 | 927 | static struct uvcg_frame *to_uvcg_frame(struct config_item *item) |
46919a23 AP |
928 | { |
929 | return container_of(item, struct uvcg_frame, item); | |
930 | } | |
931 | ||
3c4c733c | 932 | #define UVCG_FRAME_ATTR(cname, aname, to_cpu_endian, to_little_endian, bits) \ |
76e0da34 | 933 | static ssize_t uvcg_frame_##cname##_show(struct config_item *item, char *page)\ |
46919a23 | 934 | { \ |
76e0da34 | 935 | struct uvcg_frame *f = to_uvcg_frame(item); \ |
46919a23 AP |
936 | struct f_uvc_opts *opts; \ |
937 | struct config_item *opts_item; \ | |
938 | struct mutex *su_mutex = &f->item.ci_group->cg_subsys->su_mutex;\ | |
939 | int result; \ | |
940 | \ | |
941 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
942 | \ | |
943 | opts_item = f->item.ci_parent->ci_parent->ci_parent->ci_parent; \ | |
944 | opts = to_f_uvc_opts(opts_item); \ | |
945 | \ | |
946 | mutex_lock(&opts->lock); \ | |
3c4c733c | 947 | result = sprintf(page, "%d\n", to_cpu_endian(f->frame.cname)); \ |
46919a23 AP |
948 | mutex_unlock(&opts->lock); \ |
949 | \ | |
950 | mutex_unlock(su_mutex); \ | |
951 | return result; \ | |
952 | } \ | |
953 | \ | |
76e0da34 | 954 | static ssize_t uvcg_frame_##cname##_store(struct config_item *item, \ |
46919a23 AP |
955 | const char *page, size_t len)\ |
956 | { \ | |
76e0da34 | 957 | struct uvcg_frame *f = to_uvcg_frame(item); \ |
46919a23 AP |
958 | struct f_uvc_opts *opts; \ |
959 | struct config_item *opts_item; \ | |
960 | struct uvcg_format *fmt; \ | |
961 | struct mutex *su_mutex = &f->item.ci_group->cg_subsys->su_mutex;\ | |
962 | int ret; \ | |
3c4c733c DC |
963 | u##bits num; \ |
964 | \ | |
965 | ret = kstrtou##bits(page, 0, &num); \ | |
966 | if (ret) \ | |
967 | return ret; \ | |
46919a23 AP |
968 | \ |
969 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
970 | \ | |
971 | opts_item = f->item.ci_parent->ci_parent->ci_parent->ci_parent; \ | |
972 | opts = to_f_uvc_opts(opts_item); \ | |
973 | fmt = to_uvcg_format(f->item.ci_parent); \ | |
974 | \ | |
975 | mutex_lock(&opts->lock); \ | |
976 | if (fmt->linked || opts->refcnt) { \ | |
977 | ret = -EBUSY; \ | |
978 | goto end; \ | |
979 | } \ | |
980 | \ | |
3c4c733c | 981 | f->frame.cname = to_little_endian(num); \ |
46919a23 AP |
982 | ret = len; \ |
983 | end: \ | |
984 | mutex_unlock(&opts->lock); \ | |
985 | mutex_unlock(su_mutex); \ | |
986 | return ret; \ | |
987 | } \ | |
988 | \ | |
76e0da34 | 989 | UVC_ATTR(uvcg_frame_, cname, aname); |
46919a23 | 990 | |
3c4c733c | 991 | #define noop_conversion(x) (x) |
46919a23 | 992 | |
3c4c733c DC |
993 | UVCG_FRAME_ATTR(bm_capabilities, bmCapabilities, noop_conversion, |
994 | noop_conversion, 8); | |
995 | UVCG_FRAME_ATTR(w_width, wWidth, le16_to_cpu, cpu_to_le16, 16); | |
996 | UVCG_FRAME_ATTR(w_height, wHeight, le16_to_cpu, cpu_to_le16, 16); | |
997 | UVCG_FRAME_ATTR(dw_min_bit_rate, dwMinBitRate, le32_to_cpu, cpu_to_le32, 32); | |
998 | UVCG_FRAME_ATTR(dw_max_bit_rate, dwMaxBitRate, le32_to_cpu, cpu_to_le32, 32); | |
46919a23 | 999 | UVCG_FRAME_ATTR(dw_max_video_frame_buffer_size, dwMaxVideoFrameBufferSize, |
3c4c733c | 1000 | le32_to_cpu, cpu_to_le32, 32); |
46919a23 | 1001 | UVCG_FRAME_ATTR(dw_default_frame_interval, dwDefaultFrameInterval, |
3c4c733c | 1002 | le32_to_cpu, cpu_to_le32, 32); |
46919a23 | 1003 | |
3c4c733c | 1004 | #undef noop_conversion |
46919a23 AP |
1005 | |
1006 | #undef UVCG_FRAME_ATTR | |
1007 | ||
76e0da34 | 1008 | static ssize_t uvcg_frame_dw_frame_interval_show(struct config_item *item, |
46919a23 AP |
1009 | char *page) |
1010 | { | |
76e0da34 | 1011 | struct uvcg_frame *frm = to_uvcg_frame(item); |
46919a23 AP |
1012 | struct f_uvc_opts *opts; |
1013 | struct config_item *opts_item; | |
1014 | struct mutex *su_mutex = &frm->item.ci_group->cg_subsys->su_mutex; | |
1015 | int result, i; | |
1016 | char *pg = page; | |
1017 | ||
1018 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
1019 | ||
1020 | opts_item = frm->item.ci_parent->ci_parent->ci_parent->ci_parent; | |
1021 | opts = to_f_uvc_opts(opts_item); | |
1022 | ||
1023 | mutex_lock(&opts->lock); | |
1024 | for (result = 0, i = 0; i < frm->frame.b_frame_interval_type; ++i) { | |
1025 | result += sprintf(pg, "%d\n", | |
1026 | le32_to_cpu(frm->dw_frame_interval[i])); | |
1027 | pg = page + result; | |
1028 | } | |
1029 | mutex_unlock(&opts->lock); | |
1030 | ||
1031 | mutex_unlock(su_mutex); | |
1032 | return result; | |
1033 | } | |
1034 | ||
1035 | static inline int __uvcg_count_frm_intrv(char *buf, void *priv) | |
1036 | { | |
1037 | ++*((int *)priv); | |
1038 | return 0; | |
1039 | } | |
1040 | ||
1041 | static inline int __uvcg_fill_frm_intrv(char *buf, void *priv) | |
1042 | { | |
1043 | u32 num, **interv; | |
1044 | int ret; | |
1045 | ||
1046 | ret = kstrtou32(buf, 0, &num); | |
1047 | if (ret) | |
1048 | return ret; | |
46919a23 AP |
1049 | |
1050 | interv = priv; | |
1051 | **interv = cpu_to_le32(num); | |
1052 | ++*interv; | |
1053 | ||
1054 | return 0; | |
1055 | } | |
1056 | ||
1057 | static int __uvcg_iter_frm_intrv(const char *page, size_t len, | |
1058 | int (*fun)(char *, void *), void *priv) | |
1059 | { | |
1060 | /* sign, base 2 representation, newline, terminator */ | |
1061 | char buf[1 + sizeof(u32) * 8 + 1 + 1]; | |
1062 | const char *pg = page; | |
1063 | int i, ret; | |
1064 | ||
1065 | if (!fun) | |
1066 | return -EINVAL; | |
1067 | ||
1068 | while (pg - page < len) { | |
1069 | i = 0; | |
1070 | while (i < sizeof(buf) && (pg - page < len) && | |
1071 | *pg != '\0' && *pg != '\n') | |
1072 | buf[i++] = *pg++; | |
1073 | if (i == sizeof(buf)) | |
1074 | return -EINVAL; | |
1075 | while ((pg - page < len) && (*pg == '\0' || *pg == '\n')) | |
1076 | ++pg; | |
1077 | buf[i] = '\0'; | |
1078 | ret = fun(buf, priv); | |
1079 | if (ret) | |
1080 | return ret; | |
1081 | } | |
1082 | ||
1083 | return 0; | |
1084 | } | |
1085 | ||
76e0da34 | 1086 | static ssize_t uvcg_frame_dw_frame_interval_store(struct config_item *item, |
46919a23 AP |
1087 | const char *page, size_t len) |
1088 | { | |
76e0da34 | 1089 | struct uvcg_frame *ch = to_uvcg_frame(item); |
46919a23 AP |
1090 | struct f_uvc_opts *opts; |
1091 | struct config_item *opts_item; | |
1092 | struct uvcg_format *fmt; | |
1093 | struct mutex *su_mutex = &ch->item.ci_group->cg_subsys->su_mutex; | |
1094 | int ret = 0, n = 0; | |
1095 | u32 *frm_intrv, *tmp; | |
1096 | ||
1097 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
1098 | ||
1099 | opts_item = ch->item.ci_parent->ci_parent->ci_parent->ci_parent; | |
1100 | opts = to_f_uvc_opts(opts_item); | |
1101 | fmt = to_uvcg_format(ch->item.ci_parent); | |
1102 | ||
1103 | mutex_lock(&opts->lock); | |
1104 | if (fmt->linked || opts->refcnt) { | |
1105 | ret = -EBUSY; | |
1106 | goto end; | |
1107 | } | |
1108 | ||
1109 | ret = __uvcg_iter_frm_intrv(page, len, __uvcg_count_frm_intrv, &n); | |
1110 | if (ret) | |
1111 | goto end; | |
1112 | ||
1113 | tmp = frm_intrv = kcalloc(n, sizeof(u32), GFP_KERNEL); | |
1114 | if (!frm_intrv) { | |
1115 | ret = -ENOMEM; | |
1116 | goto end; | |
1117 | } | |
1118 | ||
1119 | ret = __uvcg_iter_frm_intrv(page, len, __uvcg_fill_frm_intrv, &tmp); | |
1120 | if (ret) { | |
1121 | kfree(frm_intrv); | |
1122 | goto end; | |
1123 | } | |
1124 | ||
1125 | kfree(ch->dw_frame_interval); | |
1126 | ch->dw_frame_interval = frm_intrv; | |
1127 | ch->frame.b_frame_interval_type = n; | |
1128 | ret = len; | |
1129 | ||
1130 | end: | |
1131 | mutex_unlock(&opts->lock); | |
1132 | mutex_unlock(su_mutex); | |
1133 | return ret; | |
1134 | } | |
1135 | ||
76e0da34 | 1136 | UVC_ATTR(uvcg_frame_, dw_frame_interval, dwFrameInterval); |
46919a23 AP |
1137 | |
1138 | static struct configfs_attribute *uvcg_frame_attrs[] = { | |
76e0da34 CH |
1139 | &uvcg_frame_attr_bm_capabilities, |
1140 | &uvcg_frame_attr_w_width, | |
1141 | &uvcg_frame_attr_w_height, | |
1142 | &uvcg_frame_attr_dw_min_bit_rate, | |
1143 | &uvcg_frame_attr_dw_max_bit_rate, | |
1144 | &uvcg_frame_attr_dw_max_video_frame_buffer_size, | |
1145 | &uvcg_frame_attr_dw_default_frame_interval, | |
1146 | &uvcg_frame_attr_dw_frame_interval, | |
46919a23 AP |
1147 | NULL, |
1148 | }; | |
1149 | ||
97363902 | 1150 | static const struct config_item_type uvcg_frame_type = { |
46919a23 AP |
1151 | .ct_attrs = uvcg_frame_attrs, |
1152 | .ct_owner = THIS_MODULE, | |
1153 | }; | |
1154 | ||
1155 | static struct config_item *uvcg_frame_make(struct config_group *group, | |
1156 | const char *name) | |
1157 | { | |
1158 | struct uvcg_frame *h; | |
1159 | struct uvcg_format *fmt; | |
1160 | struct f_uvc_opts *opts; | |
1161 | struct config_item *opts_item; | |
1162 | ||
1163 | h = kzalloc(sizeof(*h), GFP_KERNEL); | |
1164 | if (!h) | |
df90f838 | 1165 | return ERR_PTR(-ENOMEM); |
46919a23 AP |
1166 | |
1167 | h->frame.b_descriptor_type = USB_DT_CS_INTERFACE; | |
1168 | h->frame.b_frame_index = 1; | |
1169 | h->frame.w_width = cpu_to_le16(640); | |
1170 | h->frame.w_height = cpu_to_le16(360); | |
1171 | h->frame.dw_min_bit_rate = cpu_to_le32(18432000); | |
1172 | h->frame.dw_max_bit_rate = cpu_to_le32(55296000); | |
1173 | h->frame.dw_max_video_frame_buffer_size = cpu_to_le32(460800); | |
1174 | h->frame.dw_default_frame_interval = cpu_to_le32(666666); | |
1175 | ||
1176 | opts_item = group->cg_item.ci_parent->ci_parent->ci_parent; | |
1177 | opts = to_f_uvc_opts(opts_item); | |
1178 | ||
1179 | mutex_lock(&opts->lock); | |
1180 | fmt = to_uvcg_format(&group->cg_item); | |
1181 | if (fmt->type == UVCG_UNCOMPRESSED) { | |
1182 | h->frame.b_descriptor_subtype = UVC_VS_FRAME_UNCOMPRESSED; | |
1183 | h->fmt_type = UVCG_UNCOMPRESSED; | |
1184 | } else if (fmt->type == UVCG_MJPEG) { | |
1185 | h->frame.b_descriptor_subtype = UVC_VS_FRAME_MJPEG; | |
1186 | h->fmt_type = UVCG_MJPEG; | |
1187 | } else { | |
1188 | mutex_unlock(&opts->lock); | |
c5b2dc68 | 1189 | kfree(h); |
46919a23 AP |
1190 | return ERR_PTR(-EINVAL); |
1191 | } | |
1192 | ++fmt->num_frames; | |
1193 | mutex_unlock(&opts->lock); | |
1194 | ||
1195 | config_item_init_type_name(&h->item, name, &uvcg_frame_type); | |
1196 | ||
1197 | return &h->item; | |
1198 | } | |
1199 | ||
f093a2d4 | 1200 | static void uvcg_frame_drop(struct config_group *group, struct config_item *item) |
46919a23 AP |
1201 | { |
1202 | struct uvcg_frame *h = to_uvcg_frame(item); | |
1203 | struct uvcg_format *fmt; | |
1204 | struct f_uvc_opts *opts; | |
1205 | struct config_item *opts_item; | |
1206 | ||
1207 | opts_item = group->cg_item.ci_parent->ci_parent->ci_parent; | |
1208 | opts = to_f_uvc_opts(opts_item); | |
1209 | ||
1210 | mutex_lock(&opts->lock); | |
1211 | fmt = to_uvcg_format(&group->cg_item); | |
1212 | --fmt->num_frames; | |
1213 | kfree(h); | |
1214 | mutex_unlock(&opts->lock); | |
1215 | } | |
1216 | ||
1217 | /* streaming/uncompressed/<NAME> */ | |
1218 | struct uvcg_uncompressed { | |
1219 | struct uvcg_format fmt; | |
1220 | struct uvc_format_uncompressed desc; | |
1221 | }; | |
1222 | ||
f093a2d4 | 1223 | static struct uvcg_uncompressed *to_uvcg_uncompressed(struct config_item *item) |
46919a23 AP |
1224 | { |
1225 | return container_of( | |
1226 | container_of(to_config_group(item), struct uvcg_format, group), | |
1227 | struct uvcg_uncompressed, fmt); | |
1228 | } | |
1229 | ||
46919a23 AP |
1230 | static struct configfs_group_operations uvcg_uncompressed_group_ops = { |
1231 | .make_item = uvcg_frame_make, | |
1232 | .drop_item = uvcg_frame_drop, | |
1233 | }; | |
1234 | ||
76e0da34 | 1235 | static ssize_t uvcg_uncompressed_guid_format_show(struct config_item *item, |
46919a23 AP |
1236 | char *page) |
1237 | { | |
76e0da34 | 1238 | struct uvcg_uncompressed *ch = to_uvcg_uncompressed(item); |
46919a23 AP |
1239 | struct f_uvc_opts *opts; |
1240 | struct config_item *opts_item; | |
1241 | struct mutex *su_mutex = &ch->fmt.group.cg_subsys->su_mutex; | |
1242 | ||
1243 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
1244 | ||
1245 | opts_item = ch->fmt.group.cg_item.ci_parent->ci_parent->ci_parent; | |
1246 | opts = to_f_uvc_opts(opts_item); | |
1247 | ||
1248 | mutex_lock(&opts->lock); | |
1249 | memcpy(page, ch->desc.guidFormat, sizeof(ch->desc.guidFormat)); | |
1250 | mutex_unlock(&opts->lock); | |
1251 | ||
1252 | mutex_unlock(su_mutex); | |
1253 | ||
1254 | return sizeof(ch->desc.guidFormat); | |
1255 | } | |
1256 | ||
76e0da34 | 1257 | static ssize_t uvcg_uncompressed_guid_format_store(struct config_item *item, |
46919a23 AP |
1258 | const char *page, size_t len) |
1259 | { | |
76e0da34 | 1260 | struct uvcg_uncompressed *ch = to_uvcg_uncompressed(item); |
46919a23 AP |
1261 | struct f_uvc_opts *opts; |
1262 | struct config_item *opts_item; | |
1263 | struct mutex *su_mutex = &ch->fmt.group.cg_subsys->su_mutex; | |
1264 | int ret; | |
1265 | ||
1266 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
1267 | ||
1268 | opts_item = ch->fmt.group.cg_item.ci_parent->ci_parent->ci_parent; | |
1269 | opts = to_f_uvc_opts(opts_item); | |
1270 | ||
1271 | mutex_lock(&opts->lock); | |
1272 | if (ch->fmt.linked || opts->refcnt) { | |
1273 | ret = -EBUSY; | |
1274 | goto end; | |
1275 | } | |
1276 | ||
1277 | memcpy(ch->desc.guidFormat, page, | |
1278 | min(sizeof(ch->desc.guidFormat), len)); | |
1279 | ret = sizeof(ch->desc.guidFormat); | |
1280 | ||
1281 | end: | |
1282 | mutex_unlock(&opts->lock); | |
1283 | mutex_unlock(su_mutex); | |
1284 | return ret; | |
1285 | } | |
1286 | ||
76e0da34 | 1287 | UVC_ATTR(uvcg_uncompressed_, guid_format, guidFormat); |
46919a23 AP |
1288 | |
1289 | #define UVCG_UNCOMPRESSED_ATTR_RO(cname, aname, conv) \ | |
1290 | static ssize_t uvcg_uncompressed_##cname##_show( \ | |
76e0da34 | 1291 | struct config_item *item, char *page) \ |
46919a23 | 1292 | { \ |
76e0da34 | 1293 | struct uvcg_uncompressed *u = to_uvcg_uncompressed(item); \ |
46919a23 AP |
1294 | struct f_uvc_opts *opts; \ |
1295 | struct config_item *opts_item; \ | |
1296 | struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ | |
1297 | int result; \ | |
1298 | \ | |
1299 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
1300 | \ | |
1301 | opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ | |
1302 | opts = to_f_uvc_opts(opts_item); \ | |
1303 | \ | |
1304 | mutex_lock(&opts->lock); \ | |
1305 | result = sprintf(page, "%d\n", conv(u->desc.aname)); \ | |
1306 | mutex_unlock(&opts->lock); \ | |
1307 | \ | |
1308 | mutex_unlock(su_mutex); \ | |
1309 | return result; \ | |
1310 | } \ | |
1311 | \ | |
76e0da34 | 1312 | UVC_ATTR_RO(uvcg_uncompressed_, cname, aname); |
46919a23 AP |
1313 | |
1314 | #define UVCG_UNCOMPRESSED_ATTR(cname, aname, conv) \ | |
1315 | static ssize_t uvcg_uncompressed_##cname##_show( \ | |
76e0da34 | 1316 | struct config_item *item, char *page) \ |
46919a23 | 1317 | { \ |
76e0da34 | 1318 | struct uvcg_uncompressed *u = to_uvcg_uncompressed(item); \ |
46919a23 AP |
1319 | struct f_uvc_opts *opts; \ |
1320 | struct config_item *opts_item; \ | |
1321 | struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ | |
1322 | int result; \ | |
1323 | \ | |
1324 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
1325 | \ | |
1326 | opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ | |
1327 | opts = to_f_uvc_opts(opts_item); \ | |
1328 | \ | |
1329 | mutex_lock(&opts->lock); \ | |
1330 | result = sprintf(page, "%d\n", conv(u->desc.aname)); \ | |
1331 | mutex_unlock(&opts->lock); \ | |
1332 | \ | |
1333 | mutex_unlock(su_mutex); \ | |
1334 | return result; \ | |
1335 | } \ | |
1336 | \ | |
1337 | static ssize_t \ | |
76e0da34 | 1338 | uvcg_uncompressed_##cname##_store(struct config_item *item, \ |
46919a23 AP |
1339 | const char *page, size_t len) \ |
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 ret; \ | |
1346 | u8 num; \ | |
1347 | \ | |
1348 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
1349 | \ | |
1350 | opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ | |
1351 | opts = to_f_uvc_opts(opts_item); \ | |
1352 | \ | |
1353 | mutex_lock(&opts->lock); \ | |
1354 | if (u->fmt.linked || opts->refcnt) { \ | |
1355 | ret = -EBUSY; \ | |
1356 | goto end; \ | |
1357 | } \ | |
1358 | \ | |
1359 | ret = kstrtou8(page, 0, &num); \ | |
1360 | if (ret) \ | |
1361 | goto end; \ | |
1362 | \ | |
1363 | if (num > 255) { \ | |
1364 | ret = -EINVAL; \ | |
1365 | goto end; \ | |
1366 | } \ | |
1367 | u->desc.aname = num; \ | |
1368 | ret = len; \ | |
1369 | end: \ | |
1370 | mutex_unlock(&opts->lock); \ | |
1371 | mutex_unlock(su_mutex); \ | |
1372 | return ret; \ | |
1373 | } \ | |
1374 | \ | |
76e0da34 | 1375 | UVC_ATTR(uvcg_uncompressed_, cname, aname); |
46919a23 AP |
1376 | |
1377 | #define identity_conv(x) (x) | |
1378 | ||
1379 | UVCG_UNCOMPRESSED_ATTR(b_bits_per_pixel, bBitsPerPixel, identity_conv); | |
1380 | UVCG_UNCOMPRESSED_ATTR(b_default_frame_index, bDefaultFrameIndex, | |
1381 | identity_conv); | |
1382 | UVCG_UNCOMPRESSED_ATTR_RO(b_aspect_ratio_x, bAspectRatioX, identity_conv); | |
1383 | UVCG_UNCOMPRESSED_ATTR_RO(b_aspect_ratio_y, bAspectRatioY, identity_conv); | |
1384 | UVCG_UNCOMPRESSED_ATTR_RO(bm_interface_flags, bmInterfaceFlags, identity_conv); | |
1385 | ||
1386 | #undef identity_conv | |
1387 | ||
1388 | #undef UVCG_UNCOMPRESSED_ATTR | |
1389 | #undef UVCG_UNCOMPRESSED_ATTR_RO | |
1390 | ||
1391 | static inline ssize_t | |
76e0da34 | 1392 | uvcg_uncompressed_bma_controls_show(struct config_item *item, char *page) |
46919a23 | 1393 | { |
76e0da34 | 1394 | struct uvcg_uncompressed *unc = to_uvcg_uncompressed(item); |
46919a23 AP |
1395 | return uvcg_format_bma_controls_show(&unc->fmt, page); |
1396 | } | |
1397 | ||
1398 | static inline ssize_t | |
76e0da34 | 1399 | uvcg_uncompressed_bma_controls_store(struct config_item *item, |
46919a23 AP |
1400 | const char *page, size_t len) |
1401 | { | |
76e0da34 CH |
1402 | struct uvcg_uncompressed *unc = to_uvcg_uncompressed(item); |
1403 | return uvcg_format_bma_controls_store(&unc->fmt, page, len); | |
46919a23 AP |
1404 | } |
1405 | ||
76e0da34 | 1406 | UVC_ATTR(uvcg_uncompressed_, bma_controls, bmaControls); |
46919a23 AP |
1407 | |
1408 | static struct configfs_attribute *uvcg_uncompressed_attrs[] = { | |
76e0da34 CH |
1409 | &uvcg_uncompressed_attr_guid_format, |
1410 | &uvcg_uncompressed_attr_b_bits_per_pixel, | |
1411 | &uvcg_uncompressed_attr_b_default_frame_index, | |
1412 | &uvcg_uncompressed_attr_b_aspect_ratio_x, | |
1413 | &uvcg_uncompressed_attr_b_aspect_ratio_y, | |
1414 | &uvcg_uncompressed_attr_bm_interface_flags, | |
1415 | &uvcg_uncompressed_attr_bma_controls, | |
46919a23 AP |
1416 | NULL, |
1417 | }; | |
1418 | ||
97363902 | 1419 | static const struct config_item_type uvcg_uncompressed_type = { |
46919a23 AP |
1420 | .ct_group_ops = &uvcg_uncompressed_group_ops, |
1421 | .ct_attrs = uvcg_uncompressed_attrs, | |
1422 | .ct_owner = THIS_MODULE, | |
1423 | }; | |
1424 | ||
1425 | static struct config_group *uvcg_uncompressed_make(struct config_group *group, | |
1426 | const char *name) | |
1427 | { | |
1428 | static char guid[] = { | |
1429 | 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, | |
1430 | 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 | |
1431 | }; | |
1432 | struct uvcg_uncompressed *h; | |
1433 | ||
1434 | h = kzalloc(sizeof(*h), GFP_KERNEL); | |
1435 | if (!h) | |
df90f838 | 1436 | return ERR_PTR(-ENOMEM); |
46919a23 AP |
1437 | |
1438 | h->desc.bLength = UVC_DT_FORMAT_UNCOMPRESSED_SIZE; | |
1439 | h->desc.bDescriptorType = USB_DT_CS_INTERFACE; | |
1440 | h->desc.bDescriptorSubType = UVC_VS_FORMAT_UNCOMPRESSED; | |
1441 | memcpy(h->desc.guidFormat, guid, sizeof(guid)); | |
1442 | h->desc.bBitsPerPixel = 16; | |
1443 | h->desc.bDefaultFrameIndex = 1; | |
1444 | h->desc.bAspectRatioX = 0; | |
1445 | h->desc.bAspectRatioY = 0; | |
1446 | h->desc.bmInterfaceFlags = 0; | |
1447 | h->desc.bCopyProtect = 0; | |
1448 | ||
1449 | h->fmt.type = UVCG_UNCOMPRESSED; | |
1450 | config_group_init_type_name(&h->fmt.group, name, | |
1451 | &uvcg_uncompressed_type); | |
1452 | ||
1453 | return &h->fmt.group; | |
1454 | } | |
1455 | ||
f093a2d4 | 1456 | static void uvcg_uncompressed_drop(struct config_group *group, |
46919a23 AP |
1457 | struct config_item *item) |
1458 | { | |
1459 | struct uvcg_uncompressed *h = to_uvcg_uncompressed(item); | |
1460 | ||
1461 | kfree(h); | |
1462 | } | |
1463 | ||
1464 | static struct configfs_group_operations uvcg_uncompressed_grp_ops = { | |
1465 | .make_group = uvcg_uncompressed_make, | |
1466 | .drop_item = uvcg_uncompressed_drop, | |
1467 | }; | |
1468 | ||
97363902 | 1469 | static const struct config_item_type uvcg_uncompressed_grp_type = { |
46919a23 AP |
1470 | .ct_group_ops = &uvcg_uncompressed_grp_ops, |
1471 | .ct_owner = THIS_MODULE, | |
1472 | }; | |
1473 | ||
1474 | /* streaming/mjpeg/<NAME> */ | |
1475 | struct uvcg_mjpeg { | |
1476 | struct uvcg_format fmt; | |
1477 | struct uvc_format_mjpeg desc; | |
1478 | }; | |
1479 | ||
f093a2d4 | 1480 | static struct uvcg_mjpeg *to_uvcg_mjpeg(struct config_item *item) |
46919a23 AP |
1481 | { |
1482 | return container_of( | |
1483 | container_of(to_config_group(item), struct uvcg_format, group), | |
1484 | struct uvcg_mjpeg, fmt); | |
1485 | } | |
1486 | ||
46919a23 AP |
1487 | static struct configfs_group_operations uvcg_mjpeg_group_ops = { |
1488 | .make_item = uvcg_frame_make, | |
1489 | .drop_item = uvcg_frame_drop, | |
1490 | }; | |
1491 | ||
1492 | #define UVCG_MJPEG_ATTR_RO(cname, aname, conv) \ | |
76e0da34 | 1493 | static ssize_t uvcg_mjpeg_##cname##_show(struct config_item *item, char *page)\ |
46919a23 | 1494 | { \ |
76e0da34 | 1495 | struct uvcg_mjpeg *u = to_uvcg_mjpeg(item); \ |
46919a23 AP |
1496 | struct f_uvc_opts *opts; \ |
1497 | struct config_item *opts_item; \ | |
1498 | struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ | |
1499 | int result; \ | |
1500 | \ | |
1501 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
1502 | \ | |
1503 | opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ | |
1504 | opts = to_f_uvc_opts(opts_item); \ | |
1505 | \ | |
1506 | mutex_lock(&opts->lock); \ | |
1507 | result = sprintf(page, "%d\n", conv(u->desc.aname)); \ | |
1508 | mutex_unlock(&opts->lock); \ | |
1509 | \ | |
1510 | mutex_unlock(su_mutex); \ | |
1511 | return result; \ | |
1512 | } \ | |
1513 | \ | |
76e0da34 | 1514 | UVC_ATTR_RO(uvcg_mjpeg_, cname, aname) |
46919a23 AP |
1515 | |
1516 | #define UVCG_MJPEG_ATTR(cname, aname, conv) \ | |
76e0da34 | 1517 | static ssize_t uvcg_mjpeg_##cname##_show(struct config_item *item, char *page)\ |
46919a23 | 1518 | { \ |
76e0da34 | 1519 | struct uvcg_mjpeg *u = to_uvcg_mjpeg(item); \ |
46919a23 AP |
1520 | struct f_uvc_opts *opts; \ |
1521 | struct config_item *opts_item; \ | |
1522 | struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ | |
1523 | int result; \ | |
1524 | \ | |
1525 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
1526 | \ | |
1527 | opts_item = u->fmt.group.cg_item.ci_parent->ci_parent->ci_parent;\ | |
1528 | opts = to_f_uvc_opts(opts_item); \ | |
1529 | \ | |
1530 | mutex_lock(&opts->lock); \ | |
1531 | result = sprintf(page, "%d\n", conv(u->desc.aname)); \ | |
1532 | mutex_unlock(&opts->lock); \ | |
1533 | \ | |
1534 | mutex_unlock(su_mutex); \ | |
1535 | return result; \ | |
1536 | } \ | |
1537 | \ | |
1538 | static ssize_t \ | |
76e0da34 | 1539 | uvcg_mjpeg_##cname##_store(struct config_item *item, \ |
46919a23 AP |
1540 | const char *page, size_t len) \ |
1541 | { \ | |
76e0da34 | 1542 | struct uvcg_mjpeg *u = to_uvcg_mjpeg(item); \ |
46919a23 AP |
1543 | struct f_uvc_opts *opts; \ |
1544 | struct config_item *opts_item; \ | |
1545 | struct mutex *su_mutex = &u->fmt.group.cg_subsys->su_mutex; \ | |
1546 | int ret; \ | |
1547 | u8 num; \ | |
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 | if (u->fmt.linked || opts->refcnt) { \ | |
1556 | ret = -EBUSY; \ | |
1557 | goto end; \ | |
1558 | } \ | |
1559 | \ | |
1560 | ret = kstrtou8(page, 0, &num); \ | |
1561 | if (ret) \ | |
1562 | goto end; \ | |
1563 | \ | |
1564 | if (num > 255) { \ | |
1565 | ret = -EINVAL; \ | |
1566 | goto end; \ | |
1567 | } \ | |
1568 | u->desc.aname = num; \ | |
1569 | ret = len; \ | |
1570 | end: \ | |
1571 | mutex_unlock(&opts->lock); \ | |
1572 | mutex_unlock(su_mutex); \ | |
1573 | return ret; \ | |
1574 | } \ | |
1575 | \ | |
76e0da34 | 1576 | UVC_ATTR(uvcg_mjpeg_, cname, aname) |
46919a23 AP |
1577 | |
1578 | #define identity_conv(x) (x) | |
1579 | ||
1580 | UVCG_MJPEG_ATTR(b_default_frame_index, bDefaultFrameIndex, | |
1581 | identity_conv); | |
1582 | UVCG_MJPEG_ATTR_RO(bm_flags, bmFlags, identity_conv); | |
1583 | UVCG_MJPEG_ATTR_RO(b_aspect_ratio_x, bAspectRatioX, identity_conv); | |
1584 | UVCG_MJPEG_ATTR_RO(b_aspect_ratio_y, bAspectRatioY, identity_conv); | |
1585 | UVCG_MJPEG_ATTR_RO(bm_interface_flags, bmInterfaceFlags, identity_conv); | |
1586 | ||
1587 | #undef identity_conv | |
1588 | ||
1589 | #undef UVCG_MJPEG_ATTR | |
1590 | #undef UVCG_MJPEG_ATTR_RO | |
1591 | ||
1592 | static inline ssize_t | |
76e0da34 | 1593 | uvcg_mjpeg_bma_controls_show(struct config_item *item, char *page) |
46919a23 | 1594 | { |
76e0da34 CH |
1595 | struct uvcg_mjpeg *u = to_uvcg_mjpeg(item); |
1596 | return uvcg_format_bma_controls_show(&u->fmt, page); | |
46919a23 AP |
1597 | } |
1598 | ||
1599 | static inline ssize_t | |
76e0da34 | 1600 | uvcg_mjpeg_bma_controls_store(struct config_item *item, |
46919a23 AP |
1601 | const char *page, size_t len) |
1602 | { | |
76e0da34 CH |
1603 | struct uvcg_mjpeg *u = to_uvcg_mjpeg(item); |
1604 | return uvcg_format_bma_controls_store(&u->fmt, page, len); | |
46919a23 AP |
1605 | } |
1606 | ||
76e0da34 | 1607 | UVC_ATTR(uvcg_mjpeg_, bma_controls, bmaControls); |
46919a23 AP |
1608 | |
1609 | static struct configfs_attribute *uvcg_mjpeg_attrs[] = { | |
76e0da34 CH |
1610 | &uvcg_mjpeg_attr_b_default_frame_index, |
1611 | &uvcg_mjpeg_attr_bm_flags, | |
1612 | &uvcg_mjpeg_attr_b_aspect_ratio_x, | |
1613 | &uvcg_mjpeg_attr_b_aspect_ratio_y, | |
1614 | &uvcg_mjpeg_attr_bm_interface_flags, | |
1615 | &uvcg_mjpeg_attr_bma_controls, | |
46919a23 AP |
1616 | NULL, |
1617 | }; | |
1618 | ||
97363902 | 1619 | static const struct config_item_type uvcg_mjpeg_type = { |
46919a23 AP |
1620 | .ct_group_ops = &uvcg_mjpeg_group_ops, |
1621 | .ct_attrs = uvcg_mjpeg_attrs, | |
1622 | .ct_owner = THIS_MODULE, | |
1623 | }; | |
1624 | ||
1625 | static struct config_group *uvcg_mjpeg_make(struct config_group *group, | |
1626 | const char *name) | |
1627 | { | |
1628 | struct uvcg_mjpeg *h; | |
1629 | ||
1630 | h = kzalloc(sizeof(*h), GFP_KERNEL); | |
1631 | if (!h) | |
df90f838 | 1632 | return ERR_PTR(-ENOMEM); |
46919a23 AP |
1633 | |
1634 | h->desc.bLength = UVC_DT_FORMAT_MJPEG_SIZE; | |
1635 | h->desc.bDescriptorType = USB_DT_CS_INTERFACE; | |
1636 | h->desc.bDescriptorSubType = UVC_VS_FORMAT_MJPEG; | |
1637 | h->desc.bDefaultFrameIndex = 1; | |
1638 | h->desc.bAspectRatioX = 0; | |
1639 | h->desc.bAspectRatioY = 0; | |
1640 | h->desc.bmInterfaceFlags = 0; | |
1641 | h->desc.bCopyProtect = 0; | |
1642 | ||
1643 | h->fmt.type = UVCG_MJPEG; | |
1644 | config_group_init_type_name(&h->fmt.group, name, | |
1645 | &uvcg_mjpeg_type); | |
1646 | ||
1647 | return &h->fmt.group; | |
1648 | } | |
1649 | ||
f093a2d4 | 1650 | static void uvcg_mjpeg_drop(struct config_group *group, |
46919a23 AP |
1651 | struct config_item *item) |
1652 | { | |
1653 | struct uvcg_mjpeg *h = to_uvcg_mjpeg(item); | |
1654 | ||
1655 | kfree(h); | |
1656 | } | |
1657 | ||
1658 | static struct configfs_group_operations uvcg_mjpeg_grp_ops = { | |
1659 | .make_group = uvcg_mjpeg_make, | |
1660 | .drop_item = uvcg_mjpeg_drop, | |
1661 | }; | |
1662 | ||
97363902 | 1663 | static const struct config_item_type uvcg_mjpeg_grp_type = { |
46919a23 AP |
1664 | .ct_group_ops = &uvcg_mjpeg_grp_ops, |
1665 | .ct_owner = THIS_MODULE, | |
1666 | }; | |
1667 | ||
1668 | /* streaming/color_matching/default */ | |
1669 | static struct uvcg_default_color_matching { | |
1670 | struct config_group group; | |
1671 | } uvcg_default_color_matching; | |
1672 | ||
1673 | static inline struct uvcg_default_color_matching | |
1674 | *to_uvcg_default_color_matching(struct config_item *item) | |
1675 | { | |
1676 | return container_of(to_config_group(item), | |
1677 | struct uvcg_default_color_matching, group); | |
1678 | } | |
1679 | ||
46919a23 AP |
1680 | #define UVCG_DEFAULT_COLOR_MATCHING_ATTR(cname, aname, conv) \ |
1681 | static ssize_t uvcg_default_color_matching_##cname##_show( \ | |
76e0da34 | 1682 | struct config_item *item, char *page) \ |
46919a23 | 1683 | { \ |
76e0da34 CH |
1684 | struct uvcg_default_color_matching *dc = \ |
1685 | to_uvcg_default_color_matching(item); \ | |
46919a23 AP |
1686 | struct f_uvc_opts *opts; \ |
1687 | struct config_item *opts_item; \ | |
1688 | struct mutex *su_mutex = &dc->group.cg_subsys->su_mutex; \ | |
1689 | struct uvc_color_matching_descriptor *cd; \ | |
1690 | int result; \ | |
1691 | \ | |
1692 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ \ | |
1693 | \ | |
1694 | opts_item = dc->group.cg_item.ci_parent->ci_parent->ci_parent; \ | |
1695 | opts = to_f_uvc_opts(opts_item); \ | |
1696 | cd = &opts->uvc_color_matching; \ | |
1697 | \ | |
1698 | mutex_lock(&opts->lock); \ | |
1699 | result = sprintf(page, "%d\n", conv(cd->aname)); \ | |
1700 | mutex_unlock(&opts->lock); \ | |
1701 | \ | |
1702 | mutex_unlock(su_mutex); \ | |
1703 | return result; \ | |
1704 | } \ | |
1705 | \ | |
76e0da34 | 1706 | UVC_ATTR_RO(uvcg_default_color_matching_, cname, aname) |
46919a23 AP |
1707 | |
1708 | #define identity_conv(x) (x) | |
1709 | ||
1710 | UVCG_DEFAULT_COLOR_MATCHING_ATTR(b_color_primaries, bColorPrimaries, | |
1711 | identity_conv); | |
1712 | UVCG_DEFAULT_COLOR_MATCHING_ATTR(b_transfer_characteristics, | |
1713 | bTransferCharacteristics, identity_conv); | |
1714 | UVCG_DEFAULT_COLOR_MATCHING_ATTR(b_matrix_coefficients, bMatrixCoefficients, | |
1715 | identity_conv); | |
1716 | ||
1717 | #undef identity_conv | |
1718 | ||
1719 | #undef UVCG_DEFAULT_COLOR_MATCHING_ATTR | |
1720 | ||
1721 | static struct configfs_attribute *uvcg_default_color_matching_attrs[] = { | |
76e0da34 CH |
1722 | &uvcg_default_color_matching_attr_b_color_primaries, |
1723 | &uvcg_default_color_matching_attr_b_transfer_characteristics, | |
1724 | &uvcg_default_color_matching_attr_b_matrix_coefficients, | |
46919a23 AP |
1725 | NULL, |
1726 | }; | |
1727 | ||
97363902 | 1728 | static const struct config_item_type uvcg_default_color_matching_type = { |
46919a23 AP |
1729 | .ct_attrs = uvcg_default_color_matching_attrs, |
1730 | .ct_owner = THIS_MODULE, | |
1731 | }; | |
1732 | ||
1733 | /* struct uvcg_color_matching {}; */ | |
1734 | ||
46919a23 AP |
1735 | /* streaming/color_matching */ |
1736 | static struct uvcg_color_matching_grp { | |
1737 | struct config_group group; | |
1738 | } uvcg_color_matching_grp; | |
1739 | ||
97363902 | 1740 | static const struct config_item_type uvcg_color_matching_grp_type = { |
46919a23 AP |
1741 | .ct_owner = THIS_MODULE, |
1742 | }; | |
1743 | ||
1744 | /* streaming/class/{fs|hs|ss} */ | |
1745 | static struct uvcg_streaming_class { | |
1746 | struct config_group group; | |
1747 | } uvcg_streaming_class_fs, uvcg_streaming_class_hs, uvcg_streaming_class_ss; | |
1748 | ||
1749 | ||
1750 | static inline struct uvc_descriptor_header | |
1751 | ***__uvcg_get_stream_class_arr(struct config_item *i, struct f_uvc_opts *o) | |
1752 | { | |
1753 | struct uvcg_streaming_class *cl = container_of(to_config_group(i), | |
1754 | struct uvcg_streaming_class, group); | |
1755 | ||
1756 | if (cl == &uvcg_streaming_class_fs) | |
1757 | return &o->uvc_fs_streaming_cls; | |
1758 | ||
1759 | if (cl == &uvcg_streaming_class_hs) | |
1760 | return &o->uvc_hs_streaming_cls; | |
1761 | ||
1762 | if (cl == &uvcg_streaming_class_ss) | |
1763 | return &o->uvc_ss_streaming_cls; | |
1764 | ||
1765 | return NULL; | |
1766 | } | |
1767 | ||
1768 | enum uvcg_strm_type { | |
1769 | UVCG_HEADER = 0, | |
1770 | UVCG_FORMAT, | |
1771 | UVCG_FRAME | |
1772 | }; | |
1773 | ||
578d0b6b AP |
1774 | /* |
1775 | * Iterate over a hierarchy of streaming descriptors' config items. | |
1776 | * The items are created by the user with configfs. | |
1777 | * | |
1778 | * It "processes" the header pointed to by @priv1, then for each format | |
1779 | * that follows the header "processes" the format itself and then for | |
1780 | * each frame inside a format "processes" the frame. | |
1781 | * | |
1782 | * As a "processing" function the @fun is used. | |
1783 | * | |
1784 | * __uvcg_iter_strm_cls() is used in two context: first, to calculate | |
1785 | * the amount of memory needed for an array of streaming descriptors | |
1786 | * and second, to actually fill the array. | |
1787 | * | |
1788 | * @h: streaming header pointer | |
1789 | * @priv2: an "inout" parameter (the caller might want to see the changes to it) | |
1790 | * @priv3: an "inout" parameter (the caller might want to see the changes to it) | |
1791 | * @fun: callback function for processing each level of the hierarchy | |
1792 | */ | |
72796835 AP |
1793 | static int __uvcg_iter_strm_cls(struct uvcg_streaming_header *h, |
1794 | void *priv2, void *priv3, | |
46919a23 AP |
1795 | int (*fun)(void *, void *, void *, int, enum uvcg_strm_type type)) |
1796 | { | |
46919a23 AP |
1797 | struct uvcg_format_ptr *f; |
1798 | struct config_group *grp; | |
1799 | struct config_item *item; | |
1800 | struct uvcg_frame *frm; | |
1801 | int ret, i, j; | |
1802 | ||
1803 | if (!fun) | |
1804 | return -EINVAL; | |
1805 | ||
1806 | i = j = 0; | |
1807 | ret = fun(h, priv2, priv3, 0, UVCG_HEADER); | |
1808 | if (ret) | |
1809 | return ret; | |
1810 | list_for_each_entry(f, &h->formats, entry) { | |
1811 | ret = fun(f->fmt, priv2, priv3, i++, UVCG_FORMAT); | |
1812 | if (ret) | |
1813 | return ret; | |
1814 | grp = &f->fmt->group; | |
1815 | list_for_each_entry(item, &grp->cg_children, ci_entry) { | |
1816 | frm = to_uvcg_frame(item); | |
1817 | ret = fun(frm, priv2, priv3, j++, UVCG_FRAME); | |
1818 | if (ret) | |
1819 | return ret; | |
1820 | } | |
1821 | } | |
1822 | ||
1823 | return ret; | |
1824 | } | |
1825 | ||
578d0b6b AP |
1826 | /* |
1827 | * Count how many bytes are needed for an array of streaming descriptors. | |
1828 | * | |
1829 | * @priv1: pointer to a header, format or frame | |
1830 | * @priv2: inout parameter, accumulated size of the array | |
1831 | * @priv3: inout parameter, accumulated number of the array elements | |
1832 | * @n: unused, this function's prototype must match @fun in __uvcg_iter_strm_cls | |
1833 | */ | |
46919a23 AP |
1834 | static int __uvcg_cnt_strm(void *priv1, void *priv2, void *priv3, int n, |
1835 | enum uvcg_strm_type type) | |
1836 | { | |
1837 | size_t *size = priv2; | |
1838 | size_t *count = priv3; | |
1839 | ||
1840 | switch (type) { | |
1841 | case UVCG_HEADER: { | |
1842 | struct uvcg_streaming_header *h = priv1; | |
1843 | ||
1844 | *size += sizeof(h->desc); | |
1845 | /* bmaControls */ | |
1846 | *size += h->num_fmt * UVCG_STREAMING_CONTROL_SIZE; | |
1847 | } | |
1848 | break; | |
1849 | case UVCG_FORMAT: { | |
1850 | struct uvcg_format *fmt = priv1; | |
1851 | ||
1852 | if (fmt->type == UVCG_UNCOMPRESSED) { | |
1853 | struct uvcg_uncompressed *u = | |
1854 | container_of(fmt, struct uvcg_uncompressed, | |
1855 | fmt); | |
1856 | ||
1857 | *size += sizeof(u->desc); | |
1858 | } else if (fmt->type == UVCG_MJPEG) { | |
1859 | struct uvcg_mjpeg *m = | |
1860 | container_of(fmt, struct uvcg_mjpeg, fmt); | |
1861 | ||
1862 | *size += sizeof(m->desc); | |
1863 | } else { | |
1864 | return -EINVAL; | |
1865 | } | |
1866 | } | |
1867 | break; | |
1868 | case UVCG_FRAME: { | |
1869 | struct uvcg_frame *frm = priv1; | |
1870 | int sz = sizeof(frm->dw_frame_interval); | |
1871 | ||
1872 | *size += sizeof(frm->frame); | |
1873 | *size += frm->frame.b_frame_interval_type * sz; | |
1874 | } | |
1875 | break; | |
1876 | } | |
1877 | ||
1878 | ++*count; | |
1879 | ||
1880 | return 0; | |
1881 | } | |
1882 | ||
578d0b6b AP |
1883 | /* |
1884 | * Fill an array of streaming descriptors. | |
1885 | * | |
1886 | * @priv1: pointer to a header, format or frame | |
1887 | * @priv2: inout parameter, pointer into a block of memory | |
1888 | * @priv3: inout parameter, pointer to a 2-dimensional array | |
1889 | */ | |
46919a23 AP |
1890 | static int __uvcg_fill_strm(void *priv1, void *priv2, void *priv3, int n, |
1891 | enum uvcg_strm_type type) | |
1892 | { | |
1893 | void **dest = priv2; | |
1894 | struct uvc_descriptor_header ***array = priv3; | |
1895 | size_t sz; | |
1896 | ||
1897 | **array = *dest; | |
1898 | ++*array; | |
1899 | ||
1900 | switch (type) { | |
1901 | case UVCG_HEADER: { | |
1902 | struct uvc_input_header_descriptor *ihdr = *dest; | |
1903 | struct uvcg_streaming_header *h = priv1; | |
1904 | struct uvcg_format_ptr *f; | |
1905 | ||
1906 | memcpy(*dest, &h->desc, sizeof(h->desc)); | |
1907 | *dest += sizeof(h->desc); | |
1908 | sz = UVCG_STREAMING_CONTROL_SIZE; | |
1909 | list_for_each_entry(f, &h->formats, entry) { | |
1910 | memcpy(*dest, f->fmt->bmaControls, sz); | |
1911 | *dest += sz; | |
1912 | } | |
1913 | ihdr->bLength = sizeof(h->desc) + h->num_fmt * sz; | |
1914 | ihdr->bNumFormats = h->num_fmt; | |
1915 | } | |
1916 | break; | |
1917 | case UVCG_FORMAT: { | |
1918 | struct uvcg_format *fmt = priv1; | |
1919 | ||
1920 | if (fmt->type == UVCG_UNCOMPRESSED) { | |
1921 | struct uvc_format_uncompressed *unc = *dest; | |
1922 | struct uvcg_uncompressed *u = | |
1923 | container_of(fmt, struct uvcg_uncompressed, | |
1924 | fmt); | |
1925 | ||
1926 | memcpy(*dest, &u->desc, sizeof(u->desc)); | |
1927 | *dest += sizeof(u->desc); | |
1928 | unc->bNumFrameDescriptors = fmt->num_frames; | |
1929 | unc->bFormatIndex = n + 1; | |
1930 | } else if (fmt->type == UVCG_MJPEG) { | |
1931 | struct uvc_format_mjpeg *mjp = *dest; | |
1932 | struct uvcg_mjpeg *m = | |
1933 | container_of(fmt, struct uvcg_mjpeg, fmt); | |
1934 | ||
1935 | memcpy(*dest, &m->desc, sizeof(m->desc)); | |
1936 | *dest += sizeof(m->desc); | |
1937 | mjp->bNumFrameDescriptors = fmt->num_frames; | |
1938 | mjp->bFormatIndex = n + 1; | |
1939 | } else { | |
1940 | return -EINVAL; | |
1941 | } | |
1942 | } | |
1943 | break; | |
1944 | case UVCG_FRAME: { | |
1945 | struct uvcg_frame *frm = priv1; | |
1946 | struct uvc_descriptor_header *h = *dest; | |
1947 | ||
1948 | sz = sizeof(frm->frame); | |
1949 | memcpy(*dest, &frm->frame, sz); | |
1950 | *dest += sz; | |
1951 | sz = frm->frame.b_frame_interval_type * | |
1952 | sizeof(*frm->dw_frame_interval); | |
1953 | memcpy(*dest, frm->dw_frame_interval, sz); | |
1954 | *dest += sz; | |
1955 | if (frm->fmt_type == UVCG_UNCOMPRESSED) | |
1956 | h->bLength = UVC_DT_FRAME_UNCOMPRESSED_SIZE( | |
1957 | frm->frame.b_frame_interval_type); | |
1958 | else if (frm->fmt_type == UVCG_MJPEG) | |
1959 | h->bLength = UVC_DT_FRAME_MJPEG_SIZE( | |
1960 | frm->frame.b_frame_interval_type); | |
1961 | } | |
1962 | break; | |
1963 | } | |
1964 | ||
1965 | return 0; | |
1966 | } | |
1967 | ||
1968 | static int uvcg_streaming_class_allow_link(struct config_item *src, | |
1969 | struct config_item *target) | |
1970 | { | |
1971 | struct config_item *streaming, *header; | |
1972 | struct f_uvc_opts *opts; | |
1973 | struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex; | |
1974 | struct uvc_descriptor_header ***class_array, **cl_arr; | |
1975 | struct uvcg_streaming_header *target_hdr; | |
06ab8b04 | 1976 | void *data, *data_save; |
46919a23 AP |
1977 | size_t size = 0, count = 0; |
1978 | int ret = -EINVAL; | |
1979 | ||
1980 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
1981 | ||
1982 | streaming = src->ci_parent->ci_parent; | |
1983 | header = config_group_find_item(to_config_group(streaming), "header"); | |
1984 | if (!header || target->ci_parent != header) | |
1985 | goto out; | |
1986 | ||
1987 | opts = to_f_uvc_opts(streaming->ci_parent); | |
1988 | ||
1989 | mutex_lock(&opts->lock); | |
1990 | ||
1991 | class_array = __uvcg_get_stream_class_arr(src, opts); | |
1992 | if (!class_array || *class_array || opts->refcnt) { | |
1993 | ret = -EBUSY; | |
1994 | goto unlock; | |
1995 | } | |
1996 | ||
1997 | target_hdr = to_uvcg_streaming_header(target); | |
1998 | ret = __uvcg_iter_strm_cls(target_hdr, &size, &count, __uvcg_cnt_strm); | |
1999 | if (ret) | |
2000 | goto unlock; | |
2001 | ||
2002 | count += 2; /* color_matching, NULL */ | |
2003 | *class_array = kcalloc(count, sizeof(void *), GFP_KERNEL); | |
2004 | if (!*class_array) { | |
df90f838 | 2005 | ret = -ENOMEM; |
46919a23 AP |
2006 | goto unlock; |
2007 | } | |
2008 | ||
06ab8b04 | 2009 | data = data_save = kzalloc(size, GFP_KERNEL); |
46919a23 AP |
2010 | if (!data) { |
2011 | kfree(*class_array); | |
2012 | *class_array = NULL; | |
bd610c5a | 2013 | ret = -ENOMEM; |
46919a23 AP |
2014 | goto unlock; |
2015 | } | |
2016 | cl_arr = *class_array; | |
2017 | ret = __uvcg_iter_strm_cls(target_hdr, &data, &cl_arr, | |
2018 | __uvcg_fill_strm); | |
2019 | if (ret) { | |
2020 | kfree(*class_array); | |
2021 | *class_array = NULL; | |
06ab8b04 AP |
2022 | /* |
2023 | * __uvcg_fill_strm() called from __uvcg_iter_stream_cls() | |
2024 | * might have advanced the "data", so use a backup copy | |
2025 | */ | |
2026 | kfree(data_save); | |
46919a23 AP |
2027 | goto unlock; |
2028 | } | |
2029 | *cl_arr = (struct uvc_descriptor_header *)&opts->uvc_color_matching; | |
2030 | ||
2031 | ++target_hdr->linked; | |
2032 | ret = 0; | |
2033 | ||
2034 | unlock: | |
2035 | mutex_unlock(&opts->lock); | |
2036 | out: | |
2037 | mutex_unlock(su_mutex); | |
2038 | return ret; | |
2039 | } | |
2040 | ||
e16769d4 | 2041 | static void uvcg_streaming_class_drop_link(struct config_item *src, |
46919a23 AP |
2042 | struct config_item *target) |
2043 | { | |
2044 | struct config_item *streaming, *header; | |
2045 | struct f_uvc_opts *opts; | |
2046 | struct mutex *su_mutex = &src->ci_group->cg_subsys->su_mutex; | |
2047 | struct uvc_descriptor_header ***class_array; | |
2048 | struct uvcg_streaming_header *target_hdr; | |
46919a23 AP |
2049 | |
2050 | mutex_lock(su_mutex); /* for navigating configfs hierarchy */ | |
2051 | ||
2052 | streaming = src->ci_parent->ci_parent; | |
2053 | header = config_group_find_item(to_config_group(streaming), "header"); | |
2054 | if (!header || target->ci_parent != header) | |
2055 | goto out; | |
2056 | ||
2057 | opts = to_f_uvc_opts(streaming->ci_parent); | |
2058 | ||
2059 | mutex_lock(&opts->lock); | |
2060 | ||
2061 | class_array = __uvcg_get_stream_class_arr(src, opts); | |
2062 | if (!class_array || !*class_array) | |
2063 | goto unlock; | |
2064 | ||
e16769d4 | 2065 | if (opts->refcnt) |
46919a23 | 2066 | goto unlock; |
46919a23 AP |
2067 | |
2068 | target_hdr = to_uvcg_streaming_header(target); | |
2069 | --target_hdr->linked; | |
2070 | kfree(**class_array); | |
2071 | kfree(*class_array); | |
2072 | *class_array = NULL; | |
46919a23 AP |
2073 | |
2074 | unlock: | |
2075 | mutex_unlock(&opts->lock); | |
2076 | out: | |
2077 | mutex_unlock(su_mutex); | |
46919a23 AP |
2078 | } |
2079 | ||
2080 | static struct configfs_item_operations uvcg_streaming_class_item_ops = { | |
2081 | .allow_link = uvcg_streaming_class_allow_link, | |
2082 | .drop_link = uvcg_streaming_class_drop_link, | |
2083 | }; | |
2084 | ||
97363902 | 2085 | static const struct config_item_type uvcg_streaming_class_type = { |
46919a23 AP |
2086 | .ct_item_ops = &uvcg_streaming_class_item_ops, |
2087 | .ct_owner = THIS_MODULE, | |
2088 | }; | |
2089 | ||
46919a23 AP |
2090 | /* streaming/class */ |
2091 | static struct uvcg_streaming_class_grp { | |
2092 | struct config_group group; | |
2093 | } uvcg_streaming_class_grp; | |
2094 | ||
97363902 | 2095 | static const struct config_item_type uvcg_streaming_class_grp_type = { |
46919a23 AP |
2096 | .ct_owner = THIS_MODULE, |
2097 | }; | |
2098 | ||
46919a23 AP |
2099 | /* streaming */ |
2100 | static struct uvcg_streaming_grp { | |
2101 | struct config_group group; | |
2102 | } uvcg_streaming_grp; | |
2103 | ||
97363902 | 2104 | static const struct config_item_type uvcg_streaming_grp_type = { |
46919a23 AP |
2105 | .ct_owner = THIS_MODULE, |
2106 | }; | |
2107 | ||
46919a23 AP |
2108 | static inline struct f_uvc_opts *to_f_uvc_opts(struct config_item *item) |
2109 | { | |
2110 | return container_of(to_config_group(item), struct f_uvc_opts, | |
2111 | func_inst.group); | |
2112 | } | |
2113 | ||
46919a23 AP |
2114 | static void uvc_attr_release(struct config_item *item) |
2115 | { | |
2116 | struct f_uvc_opts *opts = to_f_uvc_opts(item); | |
2117 | ||
2118 | usb_put_function_instance(&opts->func_inst); | |
2119 | } | |
2120 | ||
2121 | static struct configfs_item_operations uvc_item_ops = { | |
2122 | .release = uvc_attr_release, | |
46919a23 AP |
2123 | }; |
2124 | ||
c8cd7510 | 2125 | #define UVCG_OPTS_ATTR(cname, aname, conv, str2u, uxx, vnoc, limit) \ |
46919a23 | 2126 | static ssize_t f_uvc_opts_##cname##_show( \ |
76e0da34 | 2127 | struct config_item *item, char *page) \ |
46919a23 | 2128 | { \ |
76e0da34 | 2129 | struct f_uvc_opts *opts = to_f_uvc_opts(item); \ |
46919a23 AP |
2130 | int result; \ |
2131 | \ | |
2132 | mutex_lock(&opts->lock); \ | |
2133 | result = sprintf(page, "%d\n", conv(opts->cname)); \ | |
2134 | mutex_unlock(&opts->lock); \ | |
2135 | \ | |
2136 | return result; \ | |
2137 | } \ | |
2138 | \ | |
2139 | static ssize_t \ | |
76e0da34 | 2140 | f_uvc_opts_##cname##_store(struct config_item *item, \ |
46919a23 AP |
2141 | const char *page, size_t len) \ |
2142 | { \ | |
76e0da34 | 2143 | struct f_uvc_opts *opts = to_f_uvc_opts(item); \ |
46919a23 AP |
2144 | int ret; \ |
2145 | uxx num; \ | |
2146 | \ | |
2147 | mutex_lock(&opts->lock); \ | |
2148 | if (opts->refcnt) { \ | |
2149 | ret = -EBUSY; \ | |
2150 | goto end; \ | |
2151 | } \ | |
2152 | \ | |
2153 | ret = str2u(page, 0, &num); \ | |
2154 | if (ret) \ | |
2155 | goto end; \ | |
2156 | \ | |
2157 | if (num > limit) { \ | |
2158 | ret = -EINVAL; \ | |
2159 | goto end; \ | |
2160 | } \ | |
2161 | opts->cname = vnoc(num); \ | |
2162 | ret = len; \ | |
2163 | end: \ | |
2164 | mutex_unlock(&opts->lock); \ | |
2165 | return ret; \ | |
2166 | } \ | |
2167 | \ | |
c8cd7510 | 2168 | UVC_ATTR(f_uvc_opts_, cname, cname) |
46919a23 AP |
2169 | |
2170 | #define identity_conv(x) (x) | |
2171 | ||
c8cd7510 PC |
2172 | UVCG_OPTS_ATTR(streaming_interval, streaming_interval, identity_conv, |
2173 | kstrtou8, u8, identity_conv, 16); | |
2174 | UVCG_OPTS_ATTR(streaming_maxpacket, streaming_maxpacket, le16_to_cpu, | |
2175 | kstrtou16, u16, le16_to_cpu, 3072); | |
2176 | UVCG_OPTS_ATTR(streaming_maxburst, streaming_maxburst, identity_conv, | |
2177 | kstrtou8, u8, identity_conv, 15); | |
46919a23 AP |
2178 | |
2179 | #undef identity_conv | |
2180 | ||
2181 | #undef UVCG_OPTS_ATTR | |
2182 | ||
2183 | static struct configfs_attribute *uvc_attrs[] = { | |
76e0da34 CH |
2184 | &f_uvc_opts_attr_streaming_interval, |
2185 | &f_uvc_opts_attr_streaming_maxpacket, | |
2186 | &f_uvc_opts_attr_streaming_maxburst, | |
46919a23 AP |
2187 | NULL, |
2188 | }; | |
2189 | ||
97363902 | 2190 | static const struct config_item_type uvc_func_type = { |
46919a23 AP |
2191 | .ct_item_ops = &uvc_item_ops, |
2192 | .ct_attrs = uvc_attrs, | |
2193 | .ct_owner = THIS_MODULE, | |
2194 | }; | |
2195 | ||
46919a23 AP |
2196 | int uvcg_attach_configfs(struct f_uvc_opts *opts) |
2197 | { | |
2198 | config_group_init_type_name(&uvcg_control_header_grp.group, | |
2199 | "header", | |
2200 | &uvcg_control_header_grp_type); | |
1ae1602d | 2201 | |
46919a23 | 2202 | config_group_init_type_name(&uvcg_default_processing.group, |
1ae1602d CH |
2203 | "default", &uvcg_default_processing_type); |
2204 | config_group_init_type_name(&uvcg_processing_grp.group, | |
2205 | "processing", &uvcg_processing_grp_type); | |
2206 | configfs_add_default_group(&uvcg_default_processing.group, | |
2207 | &uvcg_processing_grp.group); | |
2208 | ||
46919a23 | 2209 | config_group_init_type_name(&uvcg_default_camera.group, |
1ae1602d CH |
2210 | "default", &uvcg_default_camera_type); |
2211 | config_group_init_type_name(&uvcg_camera_grp.group, | |
2212 | "camera", &uvcg_camera_grp_type); | |
2213 | configfs_add_default_group(&uvcg_default_camera.group, | |
2214 | &uvcg_camera_grp.group); | |
2215 | ||
46919a23 | 2216 | config_group_init_type_name(&uvcg_default_output.group, |
1ae1602d CH |
2217 | "default", &uvcg_default_output_type); |
2218 | config_group_init_type_name(&uvcg_output_grp.group, | |
2219 | "output", &uvcg_output_grp_type); | |
2220 | configfs_add_default_group(&uvcg_default_output.group, | |
2221 | &uvcg_output_grp.group); | |
2222 | ||
2223 | config_group_init_type_name(&uvcg_terminal_grp.group, | |
2224 | "terminal", &uvcg_terminal_grp_type); | |
2225 | configfs_add_default_group(&uvcg_camera_grp.group, | |
2226 | &uvcg_terminal_grp.group); | |
2227 | configfs_add_default_group(&uvcg_output_grp.group, | |
2228 | &uvcg_terminal_grp.group); | |
2229 | ||
46919a23 | 2230 | config_group_init_type_name(&uvcg_control_class_fs.group, |
1ae1602d | 2231 | "fs", &uvcg_control_class_type); |
46919a23 | 2232 | config_group_init_type_name(&uvcg_control_class_ss.group, |
1ae1602d CH |
2233 | "ss", &uvcg_control_class_type); |
2234 | config_group_init_type_name(&uvcg_control_class_grp.group, | |
46919a23 AP |
2235 | "class", |
2236 | &uvcg_control_class_grp_type); | |
1ae1602d CH |
2237 | configfs_add_default_group(&uvcg_control_class_fs.group, |
2238 | &uvcg_control_class_grp.group); | |
2239 | configfs_add_default_group(&uvcg_control_class_ss.group, | |
2240 | &uvcg_control_class_grp.group); | |
2241 | ||
2242 | config_group_init_type_name(&uvcg_control_grp.group, | |
46919a23 AP |
2243 | "control", |
2244 | &uvcg_control_grp_type); | |
1ae1602d CH |
2245 | configfs_add_default_group(&uvcg_control_header_grp.group, |
2246 | &uvcg_control_grp.group); | |
2247 | configfs_add_default_group(&uvcg_processing_grp.group, | |
2248 | &uvcg_control_grp.group); | |
2249 | configfs_add_default_group(&uvcg_terminal_grp.group, | |
2250 | &uvcg_control_grp.group); | |
2251 | configfs_add_default_group(&uvcg_control_class_grp.group, | |
2252 | &uvcg_control_grp.group); | |
2253 | ||
46919a23 AP |
2254 | config_group_init_type_name(&uvcg_streaming_header_grp.group, |
2255 | "header", | |
2256 | &uvcg_streaming_header_grp_type); | |
2257 | config_group_init_type_name(&uvcg_uncompressed_grp.group, | |
2258 | "uncompressed", | |
2259 | &uvcg_uncompressed_grp_type); | |
2260 | config_group_init_type_name(&uvcg_mjpeg_grp.group, | |
2261 | "mjpeg", | |
2262 | &uvcg_mjpeg_grp_type); | |
2263 | config_group_init_type_name(&uvcg_default_color_matching.group, | |
2264 | "default", | |
2265 | &uvcg_default_color_matching_type); | |
1ae1602d | 2266 | config_group_init_type_name(&uvcg_color_matching_grp.group, |
46919a23 AP |
2267 | "color_matching", |
2268 | &uvcg_color_matching_grp_type); | |
1ae1602d CH |
2269 | configfs_add_default_group(&uvcg_default_color_matching.group, |
2270 | &uvcg_color_matching_grp.group); | |
2271 | ||
46919a23 | 2272 | config_group_init_type_name(&uvcg_streaming_class_fs.group, |
1ae1602d | 2273 | "fs", &uvcg_streaming_class_type); |
46919a23 | 2274 | config_group_init_type_name(&uvcg_streaming_class_hs.group, |
1ae1602d | 2275 | "hs", &uvcg_streaming_class_type); |
46919a23 | 2276 | config_group_init_type_name(&uvcg_streaming_class_ss.group, |
1ae1602d CH |
2277 | "ss", &uvcg_streaming_class_type); |
2278 | config_group_init_type_name(&uvcg_streaming_class_grp.group, | |
2279 | "class", &uvcg_streaming_class_grp_type); | |
2280 | configfs_add_default_group(&uvcg_streaming_class_fs.group, | |
2281 | &uvcg_streaming_class_grp.group); | |
2282 | configfs_add_default_group(&uvcg_streaming_class_hs.group, | |
2283 | &uvcg_streaming_class_grp.group); | |
2284 | configfs_add_default_group(&uvcg_streaming_class_ss.group, | |
2285 | &uvcg_streaming_class_grp.group); | |
2286 | ||
2287 | config_group_init_type_name(&uvcg_streaming_grp.group, | |
2288 | "streaming", &uvcg_streaming_grp_type); | |
2289 | configfs_add_default_group(&uvcg_streaming_header_grp.group, | |
2290 | &uvcg_streaming_grp.group); | |
2291 | configfs_add_default_group(&uvcg_uncompressed_grp.group, | |
2292 | &uvcg_streaming_grp.group); | |
2293 | configfs_add_default_group(&uvcg_mjpeg_grp.group, | |
2294 | &uvcg_streaming_grp.group); | |
2295 | configfs_add_default_group(&uvcg_color_matching_grp.group, | |
2296 | &uvcg_streaming_grp.group); | |
2297 | configfs_add_default_group(&uvcg_streaming_class_grp.group, | |
2298 | &uvcg_streaming_grp.group); | |
2299 | ||
2300 | config_group_init_type_name(&opts->func_inst.group, | |
46919a23 AP |
2301 | "", |
2302 | &uvc_func_type); | |
1ae1602d CH |
2303 | configfs_add_default_group(&uvcg_control_grp.group, |
2304 | &opts->func_inst.group); | |
2305 | configfs_add_default_group(&uvcg_streaming_grp.group, | |
2306 | &opts->func_inst.group); | |
2307 | ||
46919a23 AP |
2308 | return 0; |
2309 | } |