1 | // SPDX-License-Identifier: GPL-2.0+ |
2 | /* |
3 | * webcam.c -- USB webcam gadget driver |
4 | * |
5 | * Copyright (C) 2009-2010 |
6 | * Laurent Pinchart (laurent.pinchart@ideasonboard.com) |
7 | */ |
8 | |
9 | #include <linux/kernel.h> |
10 | #include <linux/device.h> |
11 | #include <linux/module.h> |
12 | #include <linux/usb/video.h> |
13 | |
14 | #include "u_uvc.h" |
15 | #include "uvc_configfs.h" |
16 | |
17 | USB_GADGET_COMPOSITE_OPTIONS(); |
18 | |
19 | /*-------------------------------------------------------------------------*/ |
20 | |
21 | /* module parameters specific to the Video streaming endpoint */ |
22 | static unsigned int streaming_interval = 1; |
23 | module_param(streaming_interval, uint, S_IRUGO|S_IWUSR); |
24 | MODULE_PARM_DESC(streaming_interval, "1 - 16" ); |
25 | |
26 | static unsigned int streaming_maxpacket = 1024; |
27 | module_param(streaming_maxpacket, uint, S_IRUGO|S_IWUSR); |
28 | MODULE_PARM_DESC(streaming_maxpacket, "1 - 1023 (FS), 1 - 3072 (hs/ss)" ); |
29 | |
30 | static unsigned int streaming_maxburst; |
31 | module_param(streaming_maxburst, uint, S_IRUGO|S_IWUSR); |
32 | MODULE_PARM_DESC(streaming_maxburst, "0 - 15 (ss only)" ); |
33 | |
34 | /* -------------------------------------------------------------------------- |
35 | * Device descriptor |
36 | */ |
37 | |
38 | #define WEBCAM_VENDOR_ID 0x1d6b /* Linux Foundation */ |
39 | #define WEBCAM_PRODUCT_ID 0x0102 /* Webcam A/V gadget */ |
40 | #define WEBCAM_DEVICE_BCD 0x0010 /* 0.10 */ |
41 | |
42 | static char webcam_vendor_label[] = "Linux Foundation" ; |
43 | static char webcam_product_label[] = "Webcam gadget" ; |
44 | static char webcam_config_label[] = "Video" ; |
45 | |
46 | /* string IDs are assigned dynamically */ |
47 | |
48 | #define STRING_DESCRIPTION_IDX USB_GADGET_FIRST_AVAIL_IDX |
49 | |
50 | static struct usb_string webcam_strings[] = { |
51 | [USB_GADGET_MANUFACTURER_IDX].s = webcam_vendor_label, |
52 | [USB_GADGET_PRODUCT_IDX].s = webcam_product_label, |
53 | [USB_GADGET_SERIAL_IDX].s = "" , |
54 | [STRING_DESCRIPTION_IDX].s = webcam_config_label, |
55 | { } |
56 | }; |
57 | |
58 | static struct usb_gadget_strings webcam_stringtab = { |
59 | .language = 0x0409, /* en-us */ |
60 | .strings = webcam_strings, |
61 | }; |
62 | |
63 | static struct usb_gadget_strings *webcam_device_strings[] = { |
64 | &webcam_stringtab, |
65 | NULL, |
66 | }; |
67 | |
68 | static struct usb_function_instance *fi_uvc; |
69 | static struct usb_function *f_uvc; |
70 | |
71 | static struct usb_device_descriptor webcam_device_descriptor = { |
72 | .bLength = USB_DT_DEVICE_SIZE, |
73 | .bDescriptorType = USB_DT_DEVICE, |
74 | /* .bcdUSB = DYNAMIC */ |
75 | .bDeviceClass = USB_CLASS_MISC, |
76 | .bDeviceSubClass = 0x02, |
77 | .bDeviceProtocol = 0x01, |
78 | .bMaxPacketSize0 = 0, /* dynamic */ |
79 | .idVendor = cpu_to_le16(WEBCAM_VENDOR_ID), |
80 | .idProduct = cpu_to_le16(WEBCAM_PRODUCT_ID), |
81 | .bcdDevice = cpu_to_le16(WEBCAM_DEVICE_BCD), |
82 | .iManufacturer = 0, /* dynamic */ |
83 | .iProduct = 0, /* dynamic */ |
84 | .iSerialNumber = 0, /* dynamic */ |
85 | .bNumConfigurations = 0, /* dynamic */ |
86 | }; |
87 | |
88 | static const struct UVC_HEADER_DESCRIPTOR(1) = { |
89 | .bLength = UVC_DT_HEADER_SIZE(1), |
90 | .bDescriptorType = USB_DT_CS_INTERFACE, |
91 | .bDescriptorSubType = UVC_VC_HEADER, |
92 | .bcdUVC = cpu_to_le16(0x0110), |
93 | .wTotalLength = 0, /* dynamic */ |
94 | .dwClockFrequency = cpu_to_le32(48000000), |
95 | .bInCollection = 0, /* dynamic */ |
96 | .baInterfaceNr[0] = 0, /* dynamic */ |
97 | }; |
98 | |
99 | static const struct uvc_camera_terminal_descriptor uvc_camera_terminal = { |
100 | .bLength = UVC_DT_CAMERA_TERMINAL_SIZE(3), |
101 | .bDescriptorType = USB_DT_CS_INTERFACE, |
102 | .bDescriptorSubType = UVC_VC_INPUT_TERMINAL, |
103 | .bTerminalID = 1, |
104 | .wTerminalType = cpu_to_le16(0x0201), |
105 | .bAssocTerminal = 0, |
106 | .iTerminal = 0, |
107 | .wObjectiveFocalLengthMin = cpu_to_le16(0), |
108 | .wObjectiveFocalLengthMax = cpu_to_le16(0), |
109 | .wOcularFocalLength = cpu_to_le16(0), |
110 | .bControlSize = 3, |
111 | .bmControls[0] = 2, |
112 | .bmControls[1] = 0, |
113 | .bmControls[2] = 0, |
114 | }; |
115 | |
116 | static const struct uvc_processing_unit_descriptor uvc_processing = { |
117 | .bLength = UVC_DT_PROCESSING_UNIT_SIZE(2), |
118 | .bDescriptorType = USB_DT_CS_INTERFACE, |
119 | .bDescriptorSubType = UVC_VC_PROCESSING_UNIT, |
120 | .bUnitID = 2, |
121 | .bSourceID = 1, |
122 | .wMaxMultiplier = cpu_to_le16(16*1024), |
123 | .bControlSize = 2, |
124 | .bmControls[0] = 1, |
125 | .bmControls[1] = 0, |
126 | .iProcessing = 0, |
127 | .bmVideoStandards = 0, |
128 | }; |
129 | |
130 | static const struct uvc_output_terminal_descriptor uvc_output_terminal = { |
131 | .bLength = UVC_DT_OUTPUT_TERMINAL_SIZE, |
132 | .bDescriptorType = USB_DT_CS_INTERFACE, |
133 | .bDescriptorSubType = UVC_VC_OUTPUT_TERMINAL, |
134 | .bTerminalID = 3, |
135 | .wTerminalType = cpu_to_le16(0x0101), |
136 | .bAssocTerminal = 0, |
137 | .bSourceID = 2, |
138 | .iTerminal = 0, |
139 | }; |
140 | |
141 | DECLARE_UVC_INPUT_HEADER_DESCRIPTOR(1, 2); |
142 | |
143 | static const struct UVC_INPUT_HEADER_DESCRIPTOR(1, 2) = { |
144 | .bLength = UVC_DT_INPUT_HEADER_SIZE(1, 2), |
145 | .bDescriptorType = USB_DT_CS_INTERFACE, |
146 | .bDescriptorSubType = UVC_VS_INPUT_HEADER, |
147 | .bNumFormats = 2, |
148 | .wTotalLength = 0, /* dynamic */ |
149 | .bEndpointAddress = 0, /* dynamic */ |
150 | .bmInfo = 0, |
151 | .bTerminalLink = 3, |
152 | .bStillCaptureMethod = 0, |
153 | .bTriggerSupport = 0, |
154 | .bTriggerUsage = 0, |
155 | .bControlSize = 1, |
156 | .bmaControls[0][0] = 0, |
157 | .bmaControls[1][0] = 4, |
158 | }; |
159 | |
160 | static const struct uvcg_color_matching uvcg_color_matching = { |
161 | .desc = { |
162 | .bLength = UVC_DT_COLOR_MATCHING_SIZE, |
163 | .bDescriptorType = USB_DT_CS_INTERFACE, |
164 | .bDescriptorSubType = UVC_VS_COLORFORMAT, |
165 | .bColorPrimaries = 1, |
166 | .bTransferCharacteristics = 1, |
167 | .bMatrixCoefficients = 4, |
168 | }, |
169 | }; |
170 | |
171 | static struct uvcg_uncompressed uvcg_format_yuv = { |
172 | .fmt = { |
173 | .type = UVCG_UNCOMPRESSED, |
174 | /* add to .frames and fill .num_frames at runtime */ |
175 | .color_matching = (struct uvcg_color_matching *)&uvcg_color_matching, |
176 | }, |
177 | .desc = { |
178 | .bLength = UVC_DT_FORMAT_UNCOMPRESSED_SIZE, |
179 | .bDescriptorType = USB_DT_CS_INTERFACE, |
180 | .bDescriptorSubType = UVC_VS_FORMAT_UNCOMPRESSED, |
181 | .bFormatIndex = 1, |
182 | .bNumFrameDescriptors = 2, |
183 | .guidFormat = { |
184 | 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, |
185 | 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 |
186 | }, |
187 | .bBitsPerPixel = 16, |
188 | .bDefaultFrameIndex = 1, |
189 | .bAspectRatioX = 0, |
190 | .bAspectRatioY = 0, |
191 | .bmInterlaceFlags = 0, |
192 | .bCopyProtect = 0, |
193 | }, |
194 | }; |
195 | |
196 | static struct uvcg_format_ptr uvcg_format_ptr_yuv = { |
197 | .fmt = &uvcg_format_yuv.fmt, |
198 | }; |
199 | |
200 | DECLARE_UVC_FRAME_UNCOMPRESSED(1); |
201 | DECLARE_UVC_FRAME_UNCOMPRESSED(3); |
202 | |
203 | #define UVCG_WIDTH_360P 640 |
204 | #define UVCG_HEIGHT_360P 360 |
205 | #define UVCG_MIN_BITRATE_360P 18432000 |
206 | #define UVCG_MAX_BITRATE_360P 55296000 |
207 | #define UVCG_MAX_VIDEO_FB_SZ_360P 460800 |
208 | #define UVCG_FRM_INTERV_0_360P 666666 |
209 | #define UVCG_FRM_INTERV_1_360P 1000000 |
210 | #define UVCG_FRM_INTERV_2_360P 5000000 |
211 | #define UVCG_DEFAULT_FRM_INTERV_360P UVCG_FRM_INTERV_0_360P |
212 | |
213 | static const struct UVC_FRAME_UNCOMPRESSED(3) uvc_frame_yuv_360p = { |
214 | .bLength = UVC_DT_FRAME_UNCOMPRESSED_SIZE(3), |
215 | .bDescriptorType = USB_DT_CS_INTERFACE, |
216 | .bDescriptorSubType = UVC_VS_FRAME_UNCOMPRESSED, |
217 | .bFrameIndex = 1, |
218 | .bmCapabilities = 0, |
219 | .wWidth = cpu_to_le16(UVCG_WIDTH_360P), |
220 | .wHeight = cpu_to_le16(UVCG_HEIGHT_360P), |
221 | .dwMinBitRate = cpu_to_le32(UVCG_MIN_BITRATE_360P), |
222 | .dwMaxBitRate = cpu_to_le32(UVCG_MAX_BITRATE_360P), |
223 | .dwMaxVideoFrameBufferSize = cpu_to_le32(UVCG_MAX_VIDEO_FB_SZ_360P), |
224 | .dwDefaultFrameInterval = cpu_to_le32(UVCG_DEFAULT_FRM_INTERV_360P), |
225 | .bFrameIntervalType = 3, |
226 | .dwFrameInterval[0] = cpu_to_le32(UVCG_FRM_INTERV_0_360P), |
227 | .dwFrameInterval[1] = cpu_to_le32(UVCG_FRM_INTERV_1_360P), |
228 | .dwFrameInterval[2] = cpu_to_le32(UVCG_FRM_INTERV_2_360P), |
229 | }; |
230 | |
231 | static u32 uvcg_frame_yuv_360p_dw_frame_interval[] = { |
232 | [0] = UVCG_FRM_INTERV_0_360P, |
233 | [1] = UVCG_FRM_INTERV_1_360P, |
234 | [2] = UVCG_FRM_INTERV_2_360P, |
235 | }; |
236 | |
237 | static const struct uvcg_frame uvcg_frame_yuv_360p = { |
238 | .fmt_type = UVCG_UNCOMPRESSED, |
239 | .frame = { |
240 | .b_length = UVC_DT_FRAME_UNCOMPRESSED_SIZE(3), |
241 | .b_descriptor_type = USB_DT_CS_INTERFACE, |
242 | .b_descriptor_subtype = UVC_VS_FRAME_UNCOMPRESSED, |
243 | .b_frame_index = 1, |
244 | .bm_capabilities = 0, |
245 | .w_width = UVCG_WIDTH_360P, |
246 | .w_height = UVCG_HEIGHT_360P, |
247 | .dw_min_bit_rate = UVCG_MIN_BITRATE_360P, |
248 | .dw_max_bit_rate = UVCG_MAX_BITRATE_360P, |
249 | .dw_max_video_frame_buffer_size = UVCG_MAX_VIDEO_FB_SZ_360P, |
250 | .dw_default_frame_interval = UVCG_DEFAULT_FRM_INTERV_360P, |
251 | .b_frame_interval_type = 3, |
252 | }, |
253 | .dw_frame_interval = uvcg_frame_yuv_360p_dw_frame_interval, |
254 | }; |
255 | |
256 | static struct uvcg_frame_ptr uvcg_frame_ptr_yuv_360p = { |
257 | .frm = (struct uvcg_frame *)&uvcg_frame_yuv_360p, |
258 | }; |
259 | #define UVCG_WIDTH_720P 1280 |
260 | #define UVCG_HEIGHT_720P 720 |
261 | #define UVCG_MIN_BITRATE_720P 29491200 |
262 | #define UVCG_MAX_BITRATE_720P 29491200 |
263 | #define UVCG_MAX_VIDEO_FB_SZ_720P 1843200 |
264 | #define UVCG_FRM_INTERV_0_720P 5000000 |
265 | #define UVCG_DEFAULT_FRM_INTERV_720P UVCG_FRM_INTERV_0_720P |
266 | |
267 | static const struct UVC_FRAME_UNCOMPRESSED(1) uvc_frame_yuv_720p = { |
268 | .bLength = UVC_DT_FRAME_UNCOMPRESSED_SIZE(1), |
269 | .bDescriptorType = USB_DT_CS_INTERFACE, |
270 | .bDescriptorSubType = UVC_VS_FRAME_UNCOMPRESSED, |
271 | .bFrameIndex = 2, |
272 | .bmCapabilities = 0, |
273 | .wWidth = cpu_to_le16(UVCG_WIDTH_720P), |
274 | .wHeight = cpu_to_le16(UVCG_HEIGHT_720P), |
275 | .dwMinBitRate = cpu_to_le32(UVCG_MIN_BITRATE_720P), |
276 | .dwMaxBitRate = cpu_to_le32(UVCG_MAX_BITRATE_720P), |
277 | .dwMaxVideoFrameBufferSize = cpu_to_le32(UVCG_MAX_VIDEO_FB_SZ_720P), |
278 | .dwDefaultFrameInterval = cpu_to_le32(UVCG_DEFAULT_FRM_INTERV_720P), |
279 | .bFrameIntervalType = 1, |
280 | .dwFrameInterval[0] = cpu_to_le32(UVCG_FRM_INTERV_0_720P), |
281 | }; |
282 | |
283 | static u32 uvcg_frame_yuv_720p_dw_frame_interval[] = { |
284 | [0] = UVCG_FRM_INTERV_0_720P, |
285 | }; |
286 | |
287 | static const struct uvcg_frame uvcg_frame_yuv_720p = { |
288 | .fmt_type = UVCG_UNCOMPRESSED, |
289 | .frame = { |
290 | .b_length = UVC_DT_FRAME_UNCOMPRESSED_SIZE(1), |
291 | .b_descriptor_type = USB_DT_CS_INTERFACE, |
292 | .b_descriptor_subtype = UVC_VS_FRAME_UNCOMPRESSED, |
293 | .b_frame_index = 2, |
294 | .bm_capabilities = 0, |
295 | .w_width = UVCG_WIDTH_720P, |
296 | .w_height = UVCG_HEIGHT_720P, |
297 | .dw_min_bit_rate = UVCG_MIN_BITRATE_720P, |
298 | .dw_max_bit_rate = UVCG_MAX_BITRATE_720P, |
299 | .dw_max_video_frame_buffer_size = UVCG_MAX_VIDEO_FB_SZ_720P, |
300 | .dw_default_frame_interval = UVCG_DEFAULT_FRM_INTERV_720P, |
301 | .b_frame_interval_type = 1, |
302 | }, |
303 | .dw_frame_interval = uvcg_frame_yuv_720p_dw_frame_interval, |
304 | }; |
305 | |
306 | static struct uvcg_frame_ptr uvcg_frame_ptr_yuv_720p = { |
307 | .frm = (struct uvcg_frame *)&uvcg_frame_yuv_720p, |
308 | }; |
309 | |
310 | static struct uvcg_mjpeg uvcg_format_mjpeg = { |
311 | .fmt = { |
312 | .type = UVCG_MJPEG, |
313 | /* add to .frames and fill .num_frames at runtime */ |
314 | .color_matching = (struct uvcg_color_matching *)&uvcg_color_matching, |
315 | }, |
316 | .desc = { |
317 | .bLength = UVC_DT_FORMAT_MJPEG_SIZE, |
318 | .bDescriptorType = USB_DT_CS_INTERFACE, |
319 | .bDescriptorSubType = UVC_VS_FORMAT_MJPEG, |
320 | .bFormatIndex = 2, |
321 | .bNumFrameDescriptors = 2, |
322 | .bmFlags = 0, |
323 | .bDefaultFrameIndex = 1, |
324 | .bAspectRatioX = 0, |
325 | .bAspectRatioY = 0, |
326 | .bmInterlaceFlags = 0, |
327 | .bCopyProtect = 0, |
328 | }, |
329 | }; |
330 | |
331 | static struct uvcg_format_ptr uvcg_format_ptr_mjpeg = { |
332 | .fmt = &uvcg_format_mjpeg.fmt, |
333 | }; |
334 | |
335 | DECLARE_UVC_FRAME_MJPEG(1); |
336 | DECLARE_UVC_FRAME_MJPEG(3); |
337 | |
338 | static const struct UVC_FRAME_MJPEG(3) uvc_frame_mjpg_360p = { |
339 | .bLength = UVC_DT_FRAME_MJPEG_SIZE(3), |
340 | .bDescriptorType = USB_DT_CS_INTERFACE, |
341 | .bDescriptorSubType = UVC_VS_FRAME_MJPEG, |
342 | .bFrameIndex = 1, |
343 | .bmCapabilities = 0, |
344 | .wWidth = cpu_to_le16(UVCG_WIDTH_360P), |
345 | .wHeight = cpu_to_le16(UVCG_HEIGHT_360P), |
346 | .dwMinBitRate = cpu_to_le32(UVCG_MIN_BITRATE_360P), |
347 | .dwMaxBitRate = cpu_to_le32(UVCG_MAX_BITRATE_360P), |
348 | .dwMaxVideoFrameBufferSize = cpu_to_le32(UVCG_MAX_VIDEO_FB_SZ_360P), |
349 | .dwDefaultFrameInterval = cpu_to_le32(UVCG_DEFAULT_FRM_INTERV_360P), |
350 | .bFrameIntervalType = 3, |
351 | .dwFrameInterval[0] = cpu_to_le32(UVCG_FRM_INTERV_0_360P), |
352 | .dwFrameInterval[1] = cpu_to_le32(UVCG_FRM_INTERV_1_360P), |
353 | .dwFrameInterval[2] = cpu_to_le32(UVCG_FRM_INTERV_2_360P), |
354 | }; |
355 | |
356 | static u32 uvcg_frame_mjpeg_360p_dw_frame_interval[] = { |
357 | [0] = UVCG_FRM_INTERV_0_360P, |
358 | [1] = UVCG_FRM_INTERV_1_360P, |
359 | [2] = UVCG_FRM_INTERV_2_360P, |
360 | }; |
361 | |
362 | static const struct uvcg_frame uvcg_frame_mjpeg_360p = { |
363 | .fmt_type = UVCG_MJPEG, |
364 | .frame = { |
365 | .b_length = UVC_DT_FRAME_MJPEG_SIZE(3), |
366 | .b_descriptor_type = USB_DT_CS_INTERFACE, |
367 | .b_descriptor_subtype = UVC_VS_FRAME_MJPEG, |
368 | .b_frame_index = 1, |
369 | .bm_capabilities = 0, |
370 | .w_width = UVCG_WIDTH_360P, |
371 | .w_height = UVCG_HEIGHT_360P, |
372 | .dw_min_bit_rate = UVCG_MIN_BITRATE_360P, |
373 | .dw_max_bit_rate = UVCG_MAX_BITRATE_360P, |
374 | .dw_max_video_frame_buffer_size = UVCG_MAX_VIDEO_FB_SZ_360P, |
375 | .dw_default_frame_interval = UVCG_DEFAULT_FRM_INTERV_360P, |
376 | .b_frame_interval_type = 3, |
377 | }, |
378 | .dw_frame_interval = uvcg_frame_mjpeg_360p_dw_frame_interval, |
379 | }; |
380 | |
381 | static struct uvcg_frame_ptr uvcg_frame_ptr_mjpeg_360p = { |
382 | .frm = (struct uvcg_frame *)&uvcg_frame_mjpeg_360p, |
383 | }; |
384 | |
385 | static const struct UVC_FRAME_MJPEG(1) uvc_frame_mjpg_720p = { |
386 | .bLength = UVC_DT_FRAME_MJPEG_SIZE(1), |
387 | .bDescriptorType = USB_DT_CS_INTERFACE, |
388 | .bDescriptorSubType = UVC_VS_FRAME_MJPEG, |
389 | .bFrameIndex = 2, |
390 | .bmCapabilities = 0, |
391 | .wWidth = cpu_to_le16(UVCG_WIDTH_720P), |
392 | .wHeight = cpu_to_le16(UVCG_HEIGHT_720P), |
393 | .dwMinBitRate = cpu_to_le32(UVCG_MIN_BITRATE_720P), |
394 | .dwMaxBitRate = cpu_to_le32(UVCG_MAX_BITRATE_720P), |
395 | .dwMaxVideoFrameBufferSize = cpu_to_le32(UVCG_MAX_VIDEO_FB_SZ_720P), |
396 | .dwDefaultFrameInterval = cpu_to_le32(UVCG_DEFAULT_FRM_INTERV_720P), |
397 | .bFrameIntervalType = 1, |
398 | .dwFrameInterval[0] = cpu_to_le32(UVCG_FRM_INTERV_0_720P), |
399 | }; |
400 | |
401 | static u32 uvcg_frame_mjpeg_720p_dw_frame_interval[] = { |
402 | [0] = UVCG_FRM_INTERV_0_720P, |
403 | }; |
404 | |
405 | static const struct uvcg_frame uvcg_frame_mjpeg_720p = { |
406 | .fmt_type = UVCG_MJPEG, |
407 | .frame = { |
408 | .b_length = UVC_DT_FRAME_MJPEG_SIZE(1), |
409 | .b_descriptor_type = USB_DT_CS_INTERFACE, |
410 | .b_descriptor_subtype = UVC_VS_FRAME_MJPEG, |
411 | .b_frame_index = 2, |
412 | .bm_capabilities = 0, |
413 | .w_width = UVCG_WIDTH_720P, |
414 | .w_height = UVCG_HEIGHT_720P, |
415 | .dw_min_bit_rate = UVCG_MIN_BITRATE_720P, |
416 | .dw_max_bit_rate = UVCG_MAX_BITRATE_720P, |
417 | .dw_max_video_frame_buffer_size = UVCG_MAX_VIDEO_FB_SZ_720P, |
418 | .dw_default_frame_interval = UVCG_DEFAULT_FRM_INTERV_720P, |
419 | .b_frame_interval_type = 1, |
420 | }, |
421 | .dw_frame_interval = uvcg_frame_mjpeg_720p_dw_frame_interval, |
422 | }; |
423 | |
424 | static struct uvcg_frame_ptr uvcg_frame_ptr_mjpeg_720p = { |
425 | .frm = (struct uvcg_frame *)&uvcg_frame_mjpeg_720p, |
426 | }; |
427 | |
428 | static struct uvcg_streaming_header = { |
429 | }; |
430 | |
431 | static const struct uvc_descriptor_header * const uvc_fs_control_cls[] = { |
432 | (const struct uvc_descriptor_header *) &uvc_control_header, |
433 | (const struct uvc_descriptor_header *) &uvc_camera_terminal, |
434 | (const struct uvc_descriptor_header *) &uvc_processing, |
435 | (const struct uvc_descriptor_header *) &uvc_output_terminal, |
436 | NULL, |
437 | }; |
438 | |
439 | static const struct uvc_descriptor_header * const uvc_ss_control_cls[] = { |
440 | (const struct uvc_descriptor_header *) &uvc_control_header, |
441 | (const struct uvc_descriptor_header *) &uvc_camera_terminal, |
442 | (const struct uvc_descriptor_header *) &uvc_processing, |
443 | (const struct uvc_descriptor_header *) &uvc_output_terminal, |
444 | NULL, |
445 | }; |
446 | |
447 | static const struct uvc_descriptor_header * const uvc_fs_streaming_cls[] = { |
448 | (const struct uvc_descriptor_header *) &uvc_input_header, |
449 | (const struct uvc_descriptor_header *) &uvcg_format_yuv.desc, |
450 | (const struct uvc_descriptor_header *) &uvc_frame_yuv_360p, |
451 | (const struct uvc_descriptor_header *) &uvc_frame_yuv_720p, |
452 | (const struct uvc_descriptor_header *) &uvcg_color_matching.desc, |
453 | (const struct uvc_descriptor_header *) &uvcg_format_mjpeg.desc, |
454 | (const struct uvc_descriptor_header *) &uvc_frame_mjpg_360p, |
455 | (const struct uvc_descriptor_header *) &uvc_frame_mjpg_720p, |
456 | (const struct uvc_descriptor_header *) &uvcg_color_matching.desc, |
457 | NULL, |
458 | }; |
459 | |
460 | static const struct uvc_descriptor_header * const uvc_hs_streaming_cls[] = { |
461 | (const struct uvc_descriptor_header *) &uvc_input_header, |
462 | (const struct uvc_descriptor_header *) &uvcg_format_yuv.desc, |
463 | (const struct uvc_descriptor_header *) &uvc_frame_yuv_360p, |
464 | (const struct uvc_descriptor_header *) &uvc_frame_yuv_720p, |
465 | (const struct uvc_descriptor_header *) &uvcg_color_matching.desc, |
466 | (const struct uvc_descriptor_header *) &uvcg_format_mjpeg.desc, |
467 | (const struct uvc_descriptor_header *) &uvc_frame_mjpg_360p, |
468 | (const struct uvc_descriptor_header *) &uvc_frame_mjpg_720p, |
469 | (const struct uvc_descriptor_header *) &uvcg_color_matching.desc, |
470 | NULL, |
471 | }; |
472 | |
473 | static const struct uvc_descriptor_header * const uvc_ss_streaming_cls[] = { |
474 | (const struct uvc_descriptor_header *) &uvc_input_header, |
475 | (const struct uvc_descriptor_header *) &uvcg_format_yuv.desc, |
476 | (const struct uvc_descriptor_header *) &uvc_frame_yuv_360p, |
477 | (const struct uvc_descriptor_header *) &uvc_frame_yuv_720p, |
478 | (const struct uvc_descriptor_header *) &uvcg_color_matching.desc, |
479 | (const struct uvc_descriptor_header *) &uvcg_format_mjpeg.desc, |
480 | (const struct uvc_descriptor_header *) &uvc_frame_mjpg_360p, |
481 | (const struct uvc_descriptor_header *) &uvc_frame_mjpg_720p, |
482 | (const struct uvc_descriptor_header *) &uvcg_color_matching.desc, |
483 | NULL, |
484 | }; |
485 | |
486 | /* -------------------------------------------------------------------------- |
487 | * USB configuration |
488 | */ |
489 | |
490 | static int |
491 | webcam_config_bind(struct usb_configuration *c) |
492 | { |
493 | int status = 0; |
494 | |
495 | f_uvc = usb_get_function(fi: fi_uvc); |
496 | if (IS_ERR(ptr: f_uvc)) |
497 | return PTR_ERR(ptr: f_uvc); |
498 | |
499 | status = usb_add_function(c, f_uvc); |
500 | if (status < 0) |
501 | usb_put_function(f: f_uvc); |
502 | |
503 | return status; |
504 | } |
505 | |
506 | static struct usb_configuration webcam_config_driver = { |
507 | .label = webcam_config_label, |
508 | .bConfigurationValue = 1, |
509 | .iConfiguration = 0, /* dynamic */ |
510 | .bmAttributes = USB_CONFIG_ATT_SELFPOWER, |
511 | .MaxPower = CONFIG_USB_GADGET_VBUS_DRAW, |
512 | }; |
513 | |
514 | static int |
515 | webcam_unbind(struct usb_composite_dev *cdev) |
516 | { |
517 | if (!IS_ERR_OR_NULL(ptr: f_uvc)) |
518 | usb_put_function(f: f_uvc); |
519 | if (!IS_ERR_OR_NULL(ptr: fi_uvc)) |
520 | usb_put_function_instance(fi: fi_uvc); |
521 | return 0; |
522 | } |
523 | |
524 | static int |
525 | webcam_bind(struct usb_composite_dev *cdev) |
526 | { |
527 | struct f_uvc_opts *uvc_opts; |
528 | int ret; |
529 | |
530 | fi_uvc = usb_get_function_instance(name: "uvc" ); |
531 | if (IS_ERR(ptr: fi_uvc)) |
532 | return PTR_ERR(ptr: fi_uvc); |
533 | |
534 | uvc_opts = container_of(fi_uvc, struct f_uvc_opts, func_inst); |
535 | |
536 | uvc_opts->streaming_interval = streaming_interval; |
537 | uvc_opts->streaming_maxpacket = streaming_maxpacket; |
538 | uvc_opts->streaming_maxburst = streaming_maxburst; |
539 | |
540 | uvc_opts->fs_control = uvc_fs_control_cls; |
541 | uvc_opts->ss_control = uvc_ss_control_cls; |
542 | uvc_opts->fs_streaming = uvc_fs_streaming_cls; |
543 | uvc_opts->hs_streaming = uvc_hs_streaming_cls; |
544 | uvc_opts->ss_streaming = uvc_ss_streaming_cls; |
545 | |
546 | INIT_LIST_HEAD(list: &uvcg_format_yuv.fmt.frames); |
547 | list_add_tail(new: &uvcg_frame_ptr_yuv_360p.entry, head: &uvcg_format_yuv.fmt.frames); |
548 | list_add_tail(new: &uvcg_frame_ptr_yuv_720p.entry, head: &uvcg_format_yuv.fmt.frames); |
549 | uvcg_format_yuv.fmt.num_frames = 2; |
550 | |
551 | INIT_LIST_HEAD(list: &uvcg_format_mjpeg.fmt.frames); |
552 | list_add_tail(new: &uvcg_frame_ptr_mjpeg_360p.entry, head: &uvcg_format_mjpeg.fmt.frames); |
553 | list_add_tail(new: &uvcg_frame_ptr_mjpeg_720p.entry, head: &uvcg_format_mjpeg.fmt.frames); |
554 | uvcg_format_mjpeg.fmt.num_frames = 2; |
555 | |
556 | INIT_LIST_HEAD(list: &uvcg_streaming_header.formats); |
557 | list_add_tail(new: &uvcg_format_ptr_yuv.entry, head: &uvcg_streaming_header.formats); |
558 | list_add_tail(new: &uvcg_format_ptr_mjpeg.entry, head: &uvcg_streaming_header.formats); |
559 | uvcg_streaming_header.num_fmt = 2; |
560 | |
561 | uvc_opts->header = &uvcg_streaming_header; |
562 | |
563 | /* Allocate string descriptor numbers ... note that string contents |
564 | * can be overridden by the composite_dev glue. |
565 | */ |
566 | ret = usb_string_ids_tab(c: cdev, str: webcam_strings); |
567 | if (ret < 0) |
568 | goto error; |
569 | webcam_device_descriptor.iManufacturer = |
570 | webcam_strings[USB_GADGET_MANUFACTURER_IDX].id; |
571 | webcam_device_descriptor.iProduct = |
572 | webcam_strings[USB_GADGET_PRODUCT_IDX].id; |
573 | webcam_config_driver.iConfiguration = |
574 | webcam_strings[STRING_DESCRIPTION_IDX].id; |
575 | |
576 | /* Register our configuration. */ |
577 | if ((ret = usb_add_config(cdev, &webcam_config_driver, |
578 | webcam_config_bind)) < 0) |
579 | goto error; |
580 | |
581 | usb_composite_overwrite_options(cdev, covr: &coverwrite); |
582 | INFO(cdev, "Webcam Video Gadget\n" ); |
583 | return 0; |
584 | |
585 | error: |
586 | usb_put_function_instance(fi: fi_uvc); |
587 | return ret; |
588 | } |
589 | |
590 | /* -------------------------------------------------------------------------- |
591 | * Driver |
592 | */ |
593 | |
594 | static struct usb_composite_driver webcam_driver = { |
595 | .name = "g_webcam" , |
596 | .dev = &webcam_device_descriptor, |
597 | .strings = webcam_device_strings, |
598 | .max_speed = USB_SPEED_SUPER, |
599 | .bind = webcam_bind, |
600 | .unbind = webcam_unbind, |
601 | }; |
602 | |
603 | module_usb_composite_driver(webcam_driver); |
604 | |
605 | MODULE_AUTHOR("Laurent Pinchart" ); |
606 | MODULE_DESCRIPTION("Webcam Video Gadget" ); |
607 | MODULE_LICENSE("GPL" ); |
608 | |
609 | |