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Source at commit be977234bfb4a6dca8a39e7c52165e4cd536ad71 created 12 years 9 months ago. By Lars-Peter Clausen, jz4740: Fix compile error | |
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1 | /* |
2 | * webcam.c -- USB webcam gadget driver |
3 | * |
4 | * Copyright (C) 2009-2010 |
5 | * Laurent Pinchart (laurent.pinchart@ideasonboard.com) |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify |
8 | * it under the terms of the GNU General Public License as published by |
9 | * the Free Software Foundation; either version 2 of the License, or |
10 | * (at your option) any later version. |
11 | * |
12 | */ |
13 | #include <linux/kernel.h> |
14 | #include <linux/device.h> |
15 | #include <linux/usb/video.h> |
16 | |
17 | #include "f_uvc.h" |
18 | |
19 | /* |
20 | * Kbuild is not very cooperative with respect to linking separately |
21 | * compiled library objects into one module. So for now we won't use |
22 | * separate compilation ... ensuring init/exit sections work to shrink |
23 | * the runtime footprint, and giving us at least some parts of what |
24 | * a "gcc --combine ... part1.c part2.c part3.c ... " build would. |
25 | */ |
26 | #include "composite.c" |
27 | #include "usbstring.c" |
28 | #include "config.c" |
29 | #include "epautoconf.c" |
30 | |
31 | #include "uvc_queue.c" |
32 | #include "uvc_video.c" |
33 | #include "uvc_v4l2.c" |
34 | #include "f_uvc.c" |
35 | |
36 | /* -------------------------------------------------------------------------- |
37 | * Device descriptor |
38 | */ |
39 | |
40 | #define WEBCAM_VENDOR_ID 0x1d6b /* Linux Foundation */ |
41 | #define WEBCAM_PRODUCT_ID 0x0102 /* Webcam A/V gadget */ |
42 | #define WEBCAM_DEVICE_BCD 0x0010 /* 0.10 */ |
43 | |
44 | static char webcam_vendor_label[] = "Linux Foundation"; |
45 | static char webcam_product_label[] = "Webcam gadget"; |
46 | static char webcam_config_label[] = "Video"; |
47 | |
48 | /* string IDs are assigned dynamically */ |
49 | |
50 | #define STRING_MANUFACTURER_IDX 0 |
51 | #define STRING_PRODUCT_IDX 1 |
52 | #define STRING_DESCRIPTION_IDX 2 |
53 | |
54 | static struct usb_string webcam_strings[] = { |
55 | [STRING_MANUFACTURER_IDX].s = webcam_vendor_label, |
56 | [STRING_PRODUCT_IDX].s = webcam_product_label, |
57 | [STRING_DESCRIPTION_IDX].s = webcam_config_label, |
58 | { } |
59 | }; |
60 | |
61 | static struct usb_gadget_strings webcam_stringtab = { |
62 | .language = 0x0409, /* en-us */ |
63 | .strings = webcam_strings, |
64 | }; |
65 | |
66 | static struct usb_gadget_strings *webcam_device_strings[] = { |
67 | &webcam_stringtab, |
68 | NULL, |
69 | }; |
70 | |
71 | static struct usb_device_descriptor webcam_device_descriptor = { |
72 | .bLength = USB_DT_DEVICE_SIZE, |
73 | .bDescriptorType = USB_DT_DEVICE, |
74 | .bcdUSB = cpu_to_le16(0x0200), |
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 | DECLARE_UVC_HEADER_DESCRIPTOR(1); |
89 | |
90 | static const struct UVC_HEADER_DESCRIPTOR(1) uvc_control_header = { |
91 | .bLength = UVC_DT_HEADER_SIZE(1), |
92 | .bDescriptorType = USB_DT_CS_INTERFACE, |
93 | .bDescriptorSubType = UVC_VC_HEADER, |
94 | .bcdUVC = cpu_to_le16(0x0100), |
95 | .wTotalLength = 0, /* dynamic */ |
96 | .dwClockFrequency = cpu_to_le32(48000000), |
97 | .bInCollection = 0, /* dynamic */ |
98 | .baInterfaceNr[0] = 0, /* dynamic */ |
99 | }; |
100 | |
101 | static const struct uvc_camera_terminal_descriptor uvc_camera_terminal = { |
102 | .bLength = UVC_DT_CAMERA_TERMINAL_SIZE(3), |
103 | .bDescriptorType = USB_DT_CS_INTERFACE, |
104 | .bDescriptorSubType = UVC_VC_INPUT_TERMINAL, |
105 | .bTerminalID = 1, |
106 | .wTerminalType = cpu_to_le16(0x0201), |
107 | .bAssocTerminal = 0, |
108 | .iTerminal = 0, |
109 | .wObjectiveFocalLengthMin = cpu_to_le16(0), |
110 | .wObjectiveFocalLengthMax = cpu_to_le16(0), |
111 | .wOcularFocalLength = cpu_to_le16(0), |
112 | .bControlSize = 3, |
113 | .bmControls[0] = 2, |
114 | .bmControls[1] = 0, |
115 | .bmControls[2] = 0, |
116 | }; |
117 | |
118 | static const struct uvc_processing_unit_descriptor uvc_processing = { |
119 | .bLength = UVC_DT_PROCESSING_UNIT_SIZE(2), |
120 | .bDescriptorType = USB_DT_CS_INTERFACE, |
121 | .bDescriptorSubType = UVC_VC_PROCESSING_UNIT, |
122 | .bUnitID = 2, |
123 | .bSourceID = 1, |
124 | .wMaxMultiplier = cpu_to_le16(16*1024), |
125 | .bControlSize = 2, |
126 | .bmControls[0] = 1, |
127 | .bmControls[1] = 0, |
128 | .iProcessing = 0, |
129 | }; |
130 | |
131 | static const struct uvc_output_terminal_descriptor uvc_output_terminal = { |
132 | .bLength = UVC_DT_OUTPUT_TERMINAL_SIZE, |
133 | .bDescriptorType = USB_DT_CS_INTERFACE, |
134 | .bDescriptorSubType = UVC_VC_OUTPUT_TERMINAL, |
135 | .bTerminalID = 3, |
136 | .wTerminalType = cpu_to_le16(0x0101), |
137 | .bAssocTerminal = 0, |
138 | .bSourceID = 2, |
139 | .iTerminal = 0, |
140 | }; |
141 | |
142 | DECLARE_UVC_INPUT_HEADER_DESCRIPTOR(1, 2); |
143 | |
144 | static const struct UVC_INPUT_HEADER_DESCRIPTOR(1, 2) uvc_input_header = { |
145 | .bLength = UVC_DT_INPUT_HEADER_SIZE(1, 2), |
146 | .bDescriptorType = USB_DT_CS_INTERFACE, |
147 | .bDescriptorSubType = UVC_VS_INPUT_HEADER, |
148 | .bNumFormats = 2, |
149 | .wTotalLength = 0, /* dynamic */ |
150 | .bEndpointAddress = 0, /* dynamic */ |
151 | .bmInfo = 0, |
152 | .bTerminalLink = 3, |
153 | .bStillCaptureMethod = 0, |
154 | .bTriggerSupport = 0, |
155 | .bTriggerUsage = 0, |
156 | .bControlSize = 1, |
157 | .bmaControls[0][0] = 0, |
158 | .bmaControls[1][0] = 4, |
159 | }; |
160 | |
161 | static const struct uvc_format_uncompressed uvc_format_yuv = { |
162 | .bLength = UVC_DT_FORMAT_UNCOMPRESSED_SIZE, |
163 | .bDescriptorType = USB_DT_CS_INTERFACE, |
164 | .bDescriptorSubType = UVC_VS_FORMAT_UNCOMPRESSED, |
165 | .bFormatIndex = 1, |
166 | .bNumFrameDescriptors = 2, |
167 | .guidFormat = |
168 | { 'Y', 'U', 'Y', '2', 0x00, 0x00, 0x10, 0x00, |
169 | 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71}, |
170 | .bBitsPerPixel = 16, |
171 | .bDefaultFrameIndex = 1, |
172 | .bAspectRatioX = 0, |
173 | .bAspectRatioY = 0, |
174 | .bmInterfaceFlags = 0, |
175 | .bCopyProtect = 0, |
176 | }; |
177 | |
178 | DECLARE_UVC_FRAME_UNCOMPRESSED(1); |
179 | DECLARE_UVC_FRAME_UNCOMPRESSED(3); |
180 | |
181 | static const struct UVC_FRAME_UNCOMPRESSED(3) uvc_frame_yuv_360p = { |
182 | .bLength = UVC_DT_FRAME_UNCOMPRESSED_SIZE(3), |
183 | .bDescriptorType = USB_DT_CS_INTERFACE, |
184 | .bDescriptorSubType = UVC_VS_FRAME_UNCOMPRESSED, |
185 | .bFrameIndex = 1, |
186 | .bmCapabilities = 0, |
187 | .wWidth = cpu_to_le16(640), |
188 | .wHeight = cpu_to_le16(360), |
189 | .dwMinBitRate = cpu_to_le32(18432000), |
190 | .dwMaxBitRate = cpu_to_le32(55296000), |
191 | .dwMaxVideoFrameBufferSize = cpu_to_le32(460800), |
192 | .dwDefaultFrameInterval = cpu_to_le32(666666), |
193 | .bFrameIntervalType = 3, |
194 | .dwFrameInterval[0] = cpu_to_le32(666666), |
195 | .dwFrameInterval[1] = cpu_to_le32(1000000), |
196 | .dwFrameInterval[2] = cpu_to_le32(5000000), |
197 | }; |
198 | |
199 | static const struct UVC_FRAME_UNCOMPRESSED(1) uvc_frame_yuv_720p = { |
200 | .bLength = UVC_DT_FRAME_UNCOMPRESSED_SIZE(1), |
201 | .bDescriptorType = USB_DT_CS_INTERFACE, |
202 | .bDescriptorSubType = UVC_VS_FRAME_UNCOMPRESSED, |
203 | .bFrameIndex = 2, |
204 | .bmCapabilities = 0, |
205 | .wWidth = cpu_to_le16(1280), |
206 | .wHeight = cpu_to_le16(720), |
207 | .dwMinBitRate = cpu_to_le32(29491200), |
208 | .dwMaxBitRate = cpu_to_le32(29491200), |
209 | .dwMaxVideoFrameBufferSize = cpu_to_le32(1843200), |
210 | .dwDefaultFrameInterval = cpu_to_le32(5000000), |
211 | .bFrameIntervalType = 1, |
212 | .dwFrameInterval[0] = cpu_to_le32(5000000), |
213 | }; |
214 | |
215 | static const struct uvc_format_mjpeg uvc_format_mjpg = { |
216 | .bLength = UVC_DT_FORMAT_MJPEG_SIZE, |
217 | .bDescriptorType = USB_DT_CS_INTERFACE, |
218 | .bDescriptorSubType = UVC_VS_FORMAT_MJPEG, |
219 | .bFormatIndex = 2, |
220 | .bNumFrameDescriptors = 2, |
221 | .bmFlags = 0, |
222 | .bDefaultFrameIndex = 1, |
223 | .bAspectRatioX = 0, |
224 | .bAspectRatioY = 0, |
225 | .bmInterfaceFlags = 0, |
226 | .bCopyProtect = 0, |
227 | }; |
228 | |
229 | DECLARE_UVC_FRAME_MJPEG(1); |
230 | DECLARE_UVC_FRAME_MJPEG(3); |
231 | |
232 | static const struct UVC_FRAME_MJPEG(3) uvc_frame_mjpg_360p = { |
233 | .bLength = UVC_DT_FRAME_MJPEG_SIZE(3), |
234 | .bDescriptorType = USB_DT_CS_INTERFACE, |
235 | .bDescriptorSubType = UVC_VS_FRAME_MJPEG, |
236 | .bFrameIndex = 1, |
237 | .bmCapabilities = 0, |
238 | .wWidth = cpu_to_le16(640), |
239 | .wHeight = cpu_to_le16(360), |
240 | .dwMinBitRate = cpu_to_le32(18432000), |
241 | .dwMaxBitRate = cpu_to_le32(55296000), |
242 | .dwMaxVideoFrameBufferSize = cpu_to_le32(460800), |
243 | .dwDefaultFrameInterval = cpu_to_le32(666666), |
244 | .bFrameIntervalType = 3, |
245 | .dwFrameInterval[0] = cpu_to_le32(666666), |
246 | .dwFrameInterval[1] = cpu_to_le32(1000000), |
247 | .dwFrameInterval[2] = cpu_to_le32(5000000), |
248 | }; |
249 | |
250 | static const struct UVC_FRAME_MJPEG(1) uvc_frame_mjpg_720p = { |
251 | .bLength = UVC_DT_FRAME_MJPEG_SIZE(1), |
252 | .bDescriptorType = USB_DT_CS_INTERFACE, |
253 | .bDescriptorSubType = UVC_VS_FRAME_MJPEG, |
254 | .bFrameIndex = 2, |
255 | .bmCapabilities = 0, |
256 | .wWidth = cpu_to_le16(1280), |
257 | .wHeight = cpu_to_le16(720), |
258 | .dwMinBitRate = cpu_to_le32(29491200), |
259 | .dwMaxBitRate = cpu_to_le32(29491200), |
260 | .dwMaxVideoFrameBufferSize = cpu_to_le32(1843200), |
261 | .dwDefaultFrameInterval = cpu_to_le32(5000000), |
262 | .bFrameIntervalType = 1, |
263 | .dwFrameInterval[0] = cpu_to_le32(5000000), |
264 | }; |
265 | |
266 | static const struct uvc_color_matching_descriptor uvc_color_matching = { |
267 | .bLength = UVC_DT_COLOR_MATCHING_SIZE, |
268 | .bDescriptorType = USB_DT_CS_INTERFACE, |
269 | .bDescriptorSubType = UVC_VS_COLORFORMAT, |
270 | .bColorPrimaries = 1, |
271 | .bTransferCharacteristics = 1, |
272 | .bMatrixCoefficients = 4, |
273 | }; |
274 | |
275 | static const struct uvc_descriptor_header * const uvc_control_cls[] = { |
276 | (const struct uvc_descriptor_header *) &uvc_control_header, |
277 | (const struct uvc_descriptor_header *) &uvc_camera_terminal, |
278 | (const struct uvc_descriptor_header *) &uvc_processing, |
279 | (const struct uvc_descriptor_header *) &uvc_output_terminal, |
280 | NULL, |
281 | }; |
282 | |
283 | static const struct uvc_descriptor_header * const uvc_fs_streaming_cls[] = { |
284 | (const struct uvc_descriptor_header *) &uvc_input_header, |
285 | (const struct uvc_descriptor_header *) &uvc_format_yuv, |
286 | (const struct uvc_descriptor_header *) &uvc_frame_yuv_360p, |
287 | (const struct uvc_descriptor_header *) &uvc_frame_yuv_720p, |
288 | (const struct uvc_descriptor_header *) &uvc_format_mjpg, |
289 | (const struct uvc_descriptor_header *) &uvc_frame_mjpg_360p, |
290 | (const struct uvc_descriptor_header *) &uvc_frame_mjpg_720p, |
291 | (const struct uvc_descriptor_header *) &uvc_color_matching, |
292 | NULL, |
293 | }; |
294 | |
295 | static const struct uvc_descriptor_header * const uvc_hs_streaming_cls[] = { |
296 | (const struct uvc_descriptor_header *) &uvc_input_header, |
297 | (const struct uvc_descriptor_header *) &uvc_format_yuv, |
298 | (const struct uvc_descriptor_header *) &uvc_frame_yuv_360p, |
299 | (const struct uvc_descriptor_header *) &uvc_frame_yuv_720p, |
300 | (const struct uvc_descriptor_header *) &uvc_format_mjpg, |
301 | (const struct uvc_descriptor_header *) &uvc_frame_mjpg_360p, |
302 | (const struct uvc_descriptor_header *) &uvc_frame_mjpg_720p, |
303 | (const struct uvc_descriptor_header *) &uvc_color_matching, |
304 | NULL, |
305 | }; |
306 | |
307 | /* -------------------------------------------------------------------------- |
308 | * USB configuration |
309 | */ |
310 | |
311 | static int __init |
312 | webcam_config_bind(struct usb_configuration *c) |
313 | { |
314 | return uvc_bind_config(c, uvc_control_cls, uvc_fs_streaming_cls, |
315 | uvc_hs_streaming_cls); |
316 | } |
317 | |
318 | static struct usb_configuration webcam_config_driver = { |
319 | .label = webcam_config_label, |
320 | .bConfigurationValue = 1, |
321 | .iConfiguration = 0, /* dynamic */ |
322 | .bmAttributes = USB_CONFIG_ATT_SELFPOWER, |
323 | .bMaxPower = CONFIG_USB_GADGET_VBUS_DRAW / 2, |
324 | }; |
325 | |
326 | static int /* __init_or_exit */ |
327 | webcam_unbind(struct usb_composite_dev *cdev) |
328 | { |
329 | return 0; |
330 | } |
331 | |
332 | static int __init |
333 | webcam_bind(struct usb_composite_dev *cdev) |
334 | { |
335 | int ret; |
336 | |
337 | /* Allocate string descriptor numbers ... note that string contents |
338 | * can be overridden by the composite_dev glue. |
339 | */ |
340 | if ((ret = usb_string_id(cdev)) < 0) |
341 | goto error; |
342 | webcam_strings[STRING_MANUFACTURER_IDX].id = ret; |
343 | webcam_device_descriptor.iManufacturer = ret; |
344 | |
345 | if ((ret = usb_string_id(cdev)) < 0) |
346 | goto error; |
347 | webcam_strings[STRING_PRODUCT_IDX].id = ret; |
348 | webcam_device_descriptor.iProduct = ret; |
349 | |
350 | if ((ret = usb_string_id(cdev)) < 0) |
351 | goto error; |
352 | webcam_strings[STRING_DESCRIPTION_IDX].id = ret; |
353 | webcam_config_driver.iConfiguration = ret; |
354 | |
355 | /* Register our configuration. */ |
356 | if ((ret = usb_add_config(cdev, &webcam_config_driver, |
357 | webcam_config_bind)) < 0) |
358 | goto error; |
359 | |
360 | INFO(cdev, "Webcam Video Gadget\n"); |
361 | return 0; |
362 | |
363 | error: |
364 | webcam_unbind(cdev); |
365 | return ret; |
366 | } |
367 | |
368 | /* -------------------------------------------------------------------------- |
369 | * Driver |
370 | */ |
371 | |
372 | static struct usb_composite_driver webcam_driver = { |
373 | .name = "g_webcam", |
374 | .dev = &webcam_device_descriptor, |
375 | .strings = webcam_device_strings, |
376 | .unbind = webcam_unbind, |
377 | }; |
378 | |
379 | static int __init |
380 | webcam_init(void) |
381 | { |
382 | return usb_composite_probe(&webcam_driver, webcam_bind); |
383 | } |
384 | |
385 | static void __exit |
386 | webcam_cleanup(void) |
387 | { |
388 | usb_composite_unregister(&webcam_driver); |
389 | } |
390 | |
391 | module_init(webcam_init); |
392 | module_exit(webcam_cleanup); |
393 | |
394 | MODULE_AUTHOR("Laurent Pinchart"); |
395 | MODULE_DESCRIPTION("Webcam Video Gadget"); |
396 | MODULE_LICENSE("GPL"); |
397 | MODULE_VERSION("0.1.0"); |
398 | |
399 |
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