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b7eee616 AJ |
1 | /* |
2 | * Zoran 364xx based USB webcam module version 0.72 | |
3 | * | |
4 | * Allows you to use your USB webcam with V4L2 applications | |
5 | * This is still in heavy developpement ! | |
6 | * | |
7 | * Copyright (C) 2004 Antoine Jacquet <royale@zerezo.com> | |
8 | * http://royale.zerezo.com/zr364xx/ | |
9 | * | |
10 | * Heavily inspired by usb-skeleton.c, vicam.c, cpia.c and spca50x.c drivers | |
11 | * V4L2 version inspired by meye.c driver | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License as published by | |
15 | * the Free Software Foundation; either version 2 of the License, or | |
16 | * (at your option) any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | * | |
23 | * You should have received a copy of the GNU General Public License | |
24 | * along with this program; if not, write to the Free Software | |
25 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
26 | */ | |
27 | ||
28 | ||
29 | #include <linux/version.h> | |
30 | #include <linux/module.h> | |
31 | #include <linux/init.h> | |
32 | #include <linux/usb.h> | |
33 | #include <linux/vmalloc.h> | |
34 | #include <linux/slab.h> | |
35 | #include <linux/proc_fs.h> | |
2575f84a | 36 | #include <linux/highmem.h> |
b7eee616 AJ |
37 | #include <media/v4l2-common.h> |
38 | ||
39 | ||
40 | /* Version Information */ | |
41 | #define DRIVER_VERSION "v0.72" | |
42 | #define DRIVER_AUTHOR "Antoine Jacquet, http://royale.zerezo.com/" | |
43 | #define DRIVER_DESC "Zoran 364xx" | |
44 | ||
45 | ||
46 | /* Camera */ | |
47 | #define FRAMES 2 | |
48 | #define MAX_FRAME_SIZE 100000 | |
49 | #define BUFFER_SIZE 0x1000 | |
50 | #define CTRL_TIMEOUT 500 | |
51 | ||
52 | ||
53 | /* Debug macro */ | |
54 | #define DBG(x...) if (debug) info(x) | |
55 | ||
56 | ||
57 | /* Init methods, need to find nicer names for these | |
58 | * the exact names of the chipsets would be the best if someone finds it */ | |
59 | #define METHOD0 0 | |
60 | #define METHOD1 1 | |
61 | #define METHOD2 2 | |
62 | ||
63 | ||
64 | /* Module parameters */ | |
65 | static int debug = 0; | |
66 | static int mode = 0; | |
67 | ||
68 | ||
69 | /* Module parameters interface */ | |
70 | module_param(debug, int, 0644); | |
71 | MODULE_PARM_DESC(debug, "Debug level"); | |
72 | module_param(mode, int, 0644); | |
73 | MODULE_PARM_DESC(mode, "0 = 320x240, 1 = 160x120, 2 = 640x480"); | |
74 | ||
75 | ||
76 | /* Devices supported by this driver | |
77 | * .driver_info contains the init method used by the camera */ | |
78 | static struct usb_device_id device_table[] = { | |
79 | {USB_DEVICE(0x08ca, 0x0109), .driver_info = METHOD0 }, | |
80 | {USB_DEVICE(0x041e, 0x4024), .driver_info = METHOD0 }, | |
81 | {USB_DEVICE(0x0d64, 0x0108), .driver_info = METHOD0 }, | |
82 | {USB_DEVICE(0x0546, 0x3187), .driver_info = METHOD0 }, | |
83 | {USB_DEVICE(0x0d64, 0x3108), .driver_info = METHOD0 }, | |
84 | {USB_DEVICE(0x0595, 0x4343), .driver_info = METHOD0 }, | |
85 | {USB_DEVICE(0x0bb0, 0x500d), .driver_info = METHOD0 }, | |
86 | {USB_DEVICE(0x0feb, 0x2004), .driver_info = METHOD0 }, | |
87 | {USB_DEVICE(0x055f, 0xb500), .driver_info = METHOD0 }, | |
88 | {USB_DEVICE(0x08ca, 0x2062), .driver_info = METHOD2 }, | |
89 | {USB_DEVICE(0x052b, 0x1a18), .driver_info = METHOD1 }, | |
90 | {USB_DEVICE(0x04c8, 0x0729), .driver_info = METHOD0 }, | |
91 | {USB_DEVICE(0x04f2, 0xa208), .driver_info = METHOD0 }, | |
92 | {USB_DEVICE(0x0784, 0x0040), .driver_info = METHOD1 }, | |
93 | {USB_DEVICE(0x06d6, 0x0034), .driver_info = METHOD0 }, | |
94 | {USB_DEVICE(0x0a17, 0x0062), .driver_info = METHOD2 }, | |
bebeaea0 | 95 | {USB_DEVICE(0x06d6, 0x003b), .driver_info = METHOD0 }, |
b7eee616 AJ |
96 | {} /* Terminating entry */ |
97 | }; | |
98 | ||
99 | MODULE_DEVICE_TABLE(usb, device_table); | |
100 | ||
101 | ||
102 | /* Camera stuff */ | |
103 | struct zr364xx_camera { | |
104 | struct usb_device *udev; /* save off the usb device pointer */ | |
105 | struct usb_interface *interface;/* the interface for this device */ | |
106 | struct video_device *vdev; /* v4l video device */ | |
107 | u8 *framebuf; | |
108 | int nb; | |
109 | unsigned char *buffer; | |
110 | int skip; | |
111 | int brightness; | |
112 | int width; | |
113 | int height; | |
114 | int method; | |
115 | struct mutex lock; | |
116 | }; | |
117 | ||
118 | ||
119 | /* function used to send initialisation commands to the camera */ | |
120 | static int send_control_msg(struct usb_device *udev, u8 request, u16 value, | |
121 | u16 index, unsigned char *cp, u16 size) | |
122 | { | |
123 | int status; | |
124 | ||
125 | unsigned char *transfer_buffer = kmalloc(size, GFP_KERNEL); | |
126 | if (!transfer_buffer) { | |
127 | info("kmalloc(%d) failed", size); | |
128 | return -ENOMEM; | |
129 | } | |
130 | ||
131 | memcpy(transfer_buffer, cp, size); | |
132 | ||
133 | status = usb_control_msg(udev, | |
134 | usb_sndctrlpipe(udev, 0), | |
135 | request, | |
136 | USB_DIR_OUT | USB_TYPE_VENDOR | | |
137 | USB_RECIP_DEVICE, value, index, | |
138 | transfer_buffer, size, CTRL_TIMEOUT); | |
139 | ||
140 | kfree(transfer_buffer); | |
141 | ||
142 | if (status < 0) | |
143 | info("Failed sending control message, error %d.", status); | |
144 | ||
145 | return status; | |
146 | } | |
147 | ||
148 | ||
149 | /* Control messages sent to the camera to initialize it | |
150 | * and launch the capture */ | |
151 | typedef struct { | |
152 | unsigned int value; | |
153 | unsigned int size; | |
154 | unsigned char *bytes; | |
155 | } message; | |
156 | ||
157 | /* method 0 */ | |
158 | static unsigned char m0d1[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; | |
159 | static unsigned char m0d2[] = { 0, 0, 0, 0, 0, 0 }; | |
160 | static unsigned char m0d3[] = { 0, 0 }; | |
161 | static message m0[] = { | |
162 | {0x1f30, 0, NULL}, | |
163 | {0xd000, 0, NULL}, | |
164 | {0x3370, sizeof(m0d1), m0d1}, | |
165 | {0x2000, 0, NULL}, | |
166 | {0x2f0f, 0, NULL}, | |
167 | {0x2610, sizeof(m0d2), m0d2}, | |
168 | {0xe107, 0, NULL}, | |
169 | {0x2502, 0, NULL}, | |
170 | {0x1f70, 0, NULL}, | |
171 | {0xd000, 0, NULL}, | |
172 | {0x9a01, sizeof(m0d3), m0d3}, | |
173 | {-1, -1, NULL} | |
174 | }; | |
175 | ||
176 | /* method 1 */ | |
177 | static unsigned char m1d1[] = { 0xff, 0xff }; | |
178 | static unsigned char m1d2[] = { 0x00, 0x00 }; | |
179 | static message m1[] = { | |
180 | {0x1f30, 0, NULL}, | |
181 | {0xd000, 0, NULL}, | |
182 | {0xf000, 0, NULL}, | |
183 | {0x2000, 0, NULL}, | |
184 | {0x2f0f, 0, NULL}, | |
185 | {0x2650, 0, NULL}, | |
186 | {0xe107, 0, NULL}, | |
187 | {0x2502, sizeof(m1d1), m1d1}, | |
188 | {0x1f70, 0, NULL}, | |
189 | {0xd000, 0, NULL}, | |
190 | {0xd000, 0, NULL}, | |
191 | {0xd000, 0, NULL}, | |
192 | {0x9a01, sizeof(m1d2), m1d2}, | |
193 | {-1, -1, NULL} | |
194 | }; | |
195 | ||
196 | /* method 2 */ | |
197 | static unsigned char m2d1[] = { 0xff, 0xff }; | |
198 | static message m2[] = { | |
199 | {0x1f30, 0, NULL}, | |
200 | {0xf000, 0, NULL}, | |
201 | {0x2000, 0, NULL}, | |
202 | {0x2f0f, 0, NULL}, | |
203 | {0x2650, 0, NULL}, | |
204 | {0xe107, 0, NULL}, | |
205 | {0x2502, sizeof(m2d1), m2d1}, | |
206 | {0x1f70, 0, NULL}, | |
207 | {-1, -1, NULL} | |
208 | }; | |
209 | ||
210 | /* init table */ | |
211 | static message *init[3] = { m0, m1, m2 }; | |
212 | ||
213 | ||
214 | /* JPEG static data in header (Huffman table, etc) */ | |
215 | static unsigned char header1[] = { | |
216 | 0xFF, 0xD8, | |
217 | /* | |
218 | 0xFF, 0xE0, 0x00, 0x10, 'J', 'F', 'I', 'F', | |
219 | 0x00, 0x01, 0x01, 0x00, 0x33, 0x8A, 0x00, 0x00, 0x33, 0x88, | |
220 | */ | |
221 | 0xFF, 0xDB, 0x00, 0x84 | |
222 | }; | |
223 | static unsigned char header2[] = { | |
224 | 0xFF, 0xC4, 0x00, 0x1F, 0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, | |
225 | 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
226 | 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, | |
227 | 0xFF, 0xC4, 0x00, 0xB5, 0x10, 0x00, 0x02, 0x01, 0x03, 0x03, 0x02, | |
228 | 0x04, 0x03, 0x05, 0x05, 0x04, 0x04, 0x00, 0x00, 0x01, 0x7D, 0x01, | |
229 | 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06, | |
230 | 0x13, 0x51, 0x61, 0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xA1, | |
231 | 0x08, 0x23, 0x42, 0xB1, 0xC1, 0x15, 0x52, 0xD1, 0xF0, 0x24, 0x33, | |
232 | 0x62, 0x72, 0x82, 0x09, 0x0A, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x25, | |
233 | 0x26, 0x27, 0x28, 0x29, 0x2A, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, | |
234 | 0x3A, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, | |
235 | 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, | |
236 | 0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, | |
237 | 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93, 0x94, | |
238 | 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, | |
239 | 0xA7, 0xA8, 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, | |
240 | 0xB9, 0xBA, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, | |
241 | 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xE1, 0xE2, | |
242 | 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xF1, 0xF2, 0xF3, | |
243 | 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFF, 0xC4, 0x00, 0x1F, | |
244 | 0x01, 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, | |
245 | 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03, 0x04, | |
246 | 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0xFF, 0xC4, 0x00, 0xB5, | |
247 | 0x11, 0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04, 0x07, 0x05, | |
248 | 0x04, 0x04, 0x00, 0x01, 0x02, 0x77, 0x00, 0x01, 0x02, 0x03, 0x11, | |
249 | 0x04, 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, | |
250 | 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xA1, 0xB1, 0xC1, | |
251 | 0x09, 0x23, 0x33, 0x52, 0xF0, 0x15, 0x62, 0x72, 0xD1, 0x0A, 0x16, | |
252 | 0x24, 0x34, 0xE1, 0x25, 0xF1, 0x17, 0x18, 0x19, 0x1A, 0x26, 0x27, | |
253 | 0x28, 0x29, 0x2A, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43, 0x44, | |
254 | 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, 0x55, 0x56, 0x57, | |
255 | 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, | |
256 | 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x82, 0x83, 0x84, | |
257 | 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93, 0x94, 0x95, 0x96, | |
258 | 0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, | |
259 | 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, | |
260 | 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2, 0xD3, | |
261 | 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xE2, 0xE3, 0xE4, 0xE5, | |
262 | 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, | |
263 | 0xF8, 0xF9, 0xFA, 0xFF, 0xC0, 0x00, 0x11, 0x08, 0x00, 0xF0, 0x01, | |
264 | 0x40, 0x03, 0x01, 0x21, 0x00, 0x02, 0x11, 0x01, 0x03, 0x11, 0x01, | |
265 | 0xFF, 0xDA, 0x00, 0x0C, 0x03, 0x01, 0x00, 0x02, 0x11, 0x03, 0x11, | |
266 | 0x00, 0x3F, 0x00 | |
267 | }; | |
268 | static unsigned char header3; | |
269 | ||
270 | ||
271 | ||
272 | /********************/ | |
273 | /* V4L2 integration */ | |
274 | /********************/ | |
275 | ||
276 | /* this function reads a full JPEG picture synchronously | |
277 | * TODO: do it asynchronously... */ | |
278 | static int read_frame(struct zr364xx_camera *cam, int framenum) | |
279 | { | |
280 | int i, n, temp, head, size, actual_length; | |
93566ad8 | 281 | unsigned char *ptr = NULL, *jpeg; |
b7eee616 AJ |
282 | |
283 | redo: | |
284 | /* hardware brightness */ | |
285 | n = send_control_msg(cam->udev, 1, 0x2001, 0, NULL, 0); | |
286 | temp = (0x60 << 8) + 127 - cam->brightness; | |
287 | n = send_control_msg(cam->udev, 1, temp, 0, NULL, 0); | |
288 | ||
289 | /* during the first loop we are going to insert JPEG header */ | |
290 | head = 0; | |
291 | /* this is the place in memory where we are going to build | |
292 | * the JPEG image */ | |
293 | jpeg = cam->framebuf + framenum * MAX_FRAME_SIZE; | |
294 | /* read data... */ | |
295 | do { | |
296 | n = usb_bulk_msg(cam->udev, | |
297 | usb_rcvbulkpipe(cam->udev, 0x81), | |
298 | cam->buffer, BUFFER_SIZE, &actual_length, | |
299 | CTRL_TIMEOUT); | |
300 | DBG("buffer : %d %d", cam->buffer[0], cam->buffer[1]); | |
301 | DBG("bulk : n=%d size=%d", n, actual_length); | |
302 | if (n < 0) { | |
303 | info("error reading bulk msg"); | |
304 | return 0; | |
305 | } | |
306 | if (actual_length < 0 || actual_length > BUFFER_SIZE) { | |
307 | info("wrong number of bytes"); | |
308 | return 0; | |
309 | } | |
310 | ||
311 | /* swap bytes if camera needs it */ | |
93566ad8 TP |
312 | if (cam->method == METHOD0) { |
313 | u16 *buf = (u16*)cam->buffer; | |
314 | for (i = 0; i < BUFFER_SIZE/2; i++) | |
315 | swab16s(buf + i); | |
316 | } | |
b7eee616 AJ |
317 | |
318 | /* write the JPEG header */ | |
319 | if (!head) { | |
320 | DBG("jpeg header"); | |
321 | ptr = jpeg; | |
322 | memcpy(ptr, header1, sizeof(header1)); | |
323 | ptr += sizeof(header1); | |
324 | header3 = 0; | |
325 | memcpy(ptr, &header3, 1); | |
326 | ptr++; | |
327 | memcpy(ptr, cam->buffer, 64); | |
328 | ptr += 64; | |
329 | header3 = 1; | |
330 | memcpy(ptr, &header3, 1); | |
331 | ptr++; | |
332 | memcpy(ptr, cam->buffer + 64, 64); | |
333 | ptr += 64; | |
334 | memcpy(ptr, header2, sizeof(header2)); | |
335 | ptr += sizeof(header2); | |
336 | memcpy(ptr, cam->buffer + 128, | |
337 | actual_length - 128); | |
338 | ptr += actual_length - 128; | |
339 | head = 1; | |
340 | DBG("header : %d %d %d %d %d %d %d %d %d", | |
341 | cam->buffer[0], cam->buffer[1], cam->buffer[2], | |
342 | cam->buffer[3], cam->buffer[4], cam->buffer[5], | |
343 | cam->buffer[6], cam->buffer[7], cam->buffer[8]); | |
344 | } else { | |
345 | memcpy(ptr, cam->buffer, actual_length); | |
346 | ptr += actual_length; | |
347 | } | |
348 | } | |
349 | /* ... until there is no more */ | |
350 | while (actual_length == BUFFER_SIZE); | |
351 | ||
352 | /* we skip the 2 first frames which are usually buggy */ | |
353 | if (cam->skip) { | |
354 | cam->skip--; | |
355 | goto redo; | |
356 | } | |
357 | ||
358 | /* go back to find the JPEG EOI marker */ | |
359 | size = ptr - jpeg; | |
360 | ptr -= 2; | |
361 | while (ptr > jpeg) { | |
362 | if (*ptr == 0xFF && *(ptr + 1) == 0xD9 | |
363 | && *(ptr + 2) == 0xFF) | |
364 | break; | |
365 | ptr--; | |
366 | } | |
367 | if (ptr == jpeg) | |
368 | DBG("No EOI marker"); | |
369 | ||
370 | /* Sometimes there is junk data in the middle of the picture, | |
371 | * we want to skip this bogus frames */ | |
372 | while (ptr > jpeg) { | |
373 | if (*ptr == 0xFF && *(ptr + 1) == 0xFF | |
374 | && *(ptr + 2) == 0xFF) | |
375 | break; | |
376 | ptr--; | |
377 | } | |
378 | if (ptr != jpeg) { | |
379 | DBG("Bogus frame ? %d", cam->nb); | |
380 | goto redo; | |
381 | } | |
382 | ||
383 | DBG("jpeg : %d %d %d %d %d %d %d %d", | |
384 | jpeg[0], jpeg[1], jpeg[2], jpeg[3], | |
385 | jpeg[4], jpeg[5], jpeg[6], jpeg[7]); | |
386 | ||
387 | return size; | |
388 | } | |
389 | ||
390 | ||
391 | static ssize_t zr364xx_read(struct file *file, char *buf, size_t cnt, | |
392 | loff_t * ppos) | |
393 | { | |
394 | unsigned long count = cnt; | |
395 | struct video_device *vdev = video_devdata(file); | |
396 | struct zr364xx_camera *cam; | |
397 | ||
398 | DBG("zr364xx_read: read %d bytes.", (int) count); | |
399 | ||
400 | if (vdev == NULL) | |
401 | return -ENODEV; | |
402 | cam = video_get_drvdata(vdev); | |
403 | ||
404 | if (!buf) | |
405 | return -EINVAL; | |
406 | ||
407 | if (!count) | |
408 | return -EINVAL; | |
409 | ||
410 | /* NoMan Sux ! */ | |
411 | count = read_frame(cam, 0); | |
412 | ||
413 | if (copy_to_user(buf, cam->framebuf, count)) | |
414 | return -EFAULT; | |
415 | ||
416 | return count; | |
417 | } | |
418 | ||
419 | ||
420 | static int zr364xx_vidioc_querycap(struct file *file, void *priv, | |
421 | struct v4l2_capability *cap) | |
422 | { | |
423 | memset(cap, 0, sizeof(*cap)); | |
424 | strcpy(cap->driver, DRIVER_DESC); | |
425 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE; | |
426 | return 0; | |
427 | } | |
428 | ||
429 | static int zr364xx_vidioc_enum_input(struct file *file, void *priv, | |
430 | struct v4l2_input *i) | |
431 | { | |
432 | if (i->index != 0) | |
433 | return -EINVAL; | |
434 | memset(i, 0, sizeof(*i)); | |
435 | i->index = 0; | |
436 | strcpy(i->name, DRIVER_DESC " Camera"); | |
437 | i->type = V4L2_INPUT_TYPE_CAMERA; | |
438 | return 0; | |
439 | } | |
440 | ||
441 | static int zr364xx_vidioc_g_input(struct file *file, void *priv, | |
442 | unsigned int *i) | |
443 | { | |
444 | *i = 0; | |
445 | return 0; | |
446 | } | |
447 | ||
448 | static int zr364xx_vidioc_s_input(struct file *file, void *priv, | |
449 | unsigned int i) | |
450 | { | |
451 | if (i != 0) | |
452 | return -EINVAL; | |
453 | return 0; | |
454 | } | |
455 | ||
456 | static int zr364xx_vidioc_queryctrl(struct file *file, void *priv, | |
457 | struct v4l2_queryctrl *c) | |
458 | { | |
459 | struct video_device *vdev = video_devdata(file); | |
460 | struct zr364xx_camera *cam; | |
461 | ||
462 | if (vdev == NULL) | |
463 | return -ENODEV; | |
464 | cam = video_get_drvdata(vdev); | |
465 | ||
466 | switch (c->id) { | |
467 | case V4L2_CID_BRIGHTNESS: | |
468 | c->type = V4L2_CTRL_TYPE_INTEGER; | |
469 | strcpy(c->name, "Brightness"); | |
470 | c->minimum = 0; | |
471 | c->maximum = 127; | |
472 | c->step = 1; | |
473 | c->default_value = cam->brightness; | |
474 | c->flags = 0; | |
475 | break; | |
476 | default: | |
477 | return -EINVAL; | |
478 | } | |
479 | return 0; | |
480 | } | |
481 | ||
482 | static int zr364xx_vidioc_s_ctrl(struct file *file, void *priv, | |
483 | struct v4l2_control *c) | |
484 | { | |
485 | struct video_device *vdev = video_devdata(file); | |
486 | struct zr364xx_camera *cam; | |
487 | ||
488 | if (vdev == NULL) | |
489 | return -ENODEV; | |
490 | cam = video_get_drvdata(vdev); | |
491 | ||
492 | switch (c->id) { | |
493 | case V4L2_CID_BRIGHTNESS: | |
494 | cam->brightness = c->value; | |
495 | break; | |
496 | default: | |
497 | return -EINVAL; | |
498 | } | |
499 | return 0; | |
500 | } | |
501 | ||
502 | static int zr364xx_vidioc_g_ctrl(struct file *file, void *priv, | |
503 | struct v4l2_control *c) | |
504 | { | |
505 | struct video_device *vdev = video_devdata(file); | |
506 | struct zr364xx_camera *cam; | |
507 | ||
508 | if (vdev == NULL) | |
509 | return -ENODEV; | |
510 | cam = video_get_drvdata(vdev); | |
511 | ||
512 | switch (c->id) { | |
513 | case V4L2_CID_BRIGHTNESS: | |
514 | c->value = cam->brightness; | |
515 | break; | |
516 | default: | |
517 | return -EINVAL; | |
518 | } | |
519 | return 0; | |
520 | } | |
521 | ||
522 | static int zr364xx_vidioc_enum_fmt_cap(struct file *file, | |
523 | void *priv, struct v4l2_fmtdesc *f) | |
524 | { | |
525 | if (f->index > 0) | |
526 | return -EINVAL; | |
527 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
528 | return -EINVAL; | |
529 | memset(f, 0, sizeof(*f)); | |
530 | f->index = 0; | |
531 | f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
532 | f->flags = V4L2_FMT_FLAG_COMPRESSED; | |
533 | strcpy(f->description, "JPEG"); | |
534 | f->pixelformat = V4L2_PIX_FMT_JPEG; | |
535 | return 0; | |
536 | } | |
537 | ||
538 | static int zr364xx_vidioc_try_fmt_cap(struct file *file, void *priv, | |
539 | struct v4l2_format *f) | |
540 | { | |
541 | struct video_device *vdev = video_devdata(file); | |
542 | struct zr364xx_camera *cam; | |
543 | ||
544 | if (vdev == NULL) | |
545 | return -ENODEV; | |
546 | cam = video_get_drvdata(vdev); | |
547 | ||
548 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
549 | return -EINVAL; | |
550 | if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_JPEG) | |
551 | return -EINVAL; | |
552 | if (f->fmt.pix.field != V4L2_FIELD_ANY && | |
553 | f->fmt.pix.field != V4L2_FIELD_NONE) | |
554 | return -EINVAL; | |
555 | f->fmt.pix.field = V4L2_FIELD_NONE; | |
556 | f->fmt.pix.width = cam->width; | |
557 | f->fmt.pix.height = cam->height; | |
558 | f->fmt.pix.bytesperline = f->fmt.pix.width * 2; | |
559 | f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; | |
560 | f->fmt.pix.colorspace = 0; | |
561 | f->fmt.pix.priv = 0; | |
562 | return 0; | |
563 | } | |
564 | ||
565 | static int zr364xx_vidioc_g_fmt_cap(struct file *file, void *priv, | |
566 | struct v4l2_format *f) | |
567 | { | |
568 | struct video_device *vdev = video_devdata(file); | |
569 | struct zr364xx_camera *cam; | |
570 | ||
571 | if (vdev == NULL) | |
572 | return -ENODEV; | |
573 | cam = video_get_drvdata(vdev); | |
574 | ||
575 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
576 | return -EINVAL; | |
577 | memset(&f->fmt.pix, 0, sizeof(struct v4l2_pix_format)); | |
578 | f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
579 | f->fmt.pix.pixelformat = V4L2_PIX_FMT_JPEG; | |
580 | f->fmt.pix.field = V4L2_FIELD_NONE; | |
581 | f->fmt.pix.width = cam->width; | |
582 | f->fmt.pix.height = cam->height; | |
583 | f->fmt.pix.bytesperline = f->fmt.pix.width * 2; | |
584 | f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; | |
585 | f->fmt.pix.colorspace = 0; | |
586 | f->fmt.pix.priv = 0; | |
587 | return 0; | |
588 | } | |
589 | ||
590 | static int zr364xx_vidioc_s_fmt_cap(struct file *file, void *priv, | |
591 | struct v4l2_format *f) | |
592 | { | |
593 | struct video_device *vdev = video_devdata(file); | |
594 | struct zr364xx_camera *cam; | |
595 | ||
596 | if (vdev == NULL) | |
597 | return -ENODEV; | |
598 | cam = video_get_drvdata(vdev); | |
599 | ||
600 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
601 | return -EINVAL; | |
602 | if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_JPEG) | |
603 | return -EINVAL; | |
604 | if (f->fmt.pix.field != V4L2_FIELD_ANY && | |
605 | f->fmt.pix.field != V4L2_FIELD_NONE) | |
606 | return -EINVAL; | |
607 | f->fmt.pix.field = V4L2_FIELD_NONE; | |
608 | f->fmt.pix.width = cam->width; | |
609 | f->fmt.pix.height = cam->height; | |
610 | f->fmt.pix.bytesperline = f->fmt.pix.width * 2; | |
611 | f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; | |
612 | f->fmt.pix.colorspace = 0; | |
613 | f->fmt.pix.priv = 0; | |
614 | DBG("ok!"); | |
615 | return 0; | |
616 | } | |
617 | ||
618 | static int zr364xx_vidioc_streamon(struct file *file, void *priv, | |
619 | enum v4l2_buf_type type) | |
620 | { | |
621 | return 0; | |
622 | } | |
623 | ||
624 | static int zr364xx_vidioc_streamoff(struct file *file, void *priv, | |
625 | enum v4l2_buf_type type) | |
626 | { | |
627 | return 0; | |
628 | } | |
629 | ||
630 | ||
631 | /* open the camera */ | |
632 | static int zr364xx_open(struct inode *inode, struct file *file) | |
633 | { | |
634 | struct video_device *vdev = video_devdata(file); | |
635 | struct zr364xx_camera *cam = video_get_drvdata(vdev); | |
636 | struct usb_device *udev = cam->udev; | |
637 | int i, err; | |
638 | ||
639 | DBG("zr364xx_open"); | |
640 | ||
641 | cam->skip = 2; | |
642 | ||
643 | err = video_exclusive_open(inode, file); | |
644 | if (err < 0) | |
645 | return err; | |
646 | ||
647 | if (!cam->framebuf) { | |
648 | cam->framebuf = vmalloc_32(MAX_FRAME_SIZE * FRAMES); | |
649 | if (!cam->framebuf) { | |
650 | info("vmalloc_32 failed!"); | |
651 | return -ENOMEM; | |
652 | } | |
653 | } | |
654 | ||
655 | mutex_lock(&cam->lock); | |
656 | for (i = 0; init[cam->method][i].size != -1; i++) { | |
657 | err = | |
658 | send_control_msg(udev, 1, init[cam->method][i].value, | |
659 | 0, init[cam->method][i].bytes, | |
660 | init[cam->method][i].size); | |
661 | if (err < 0) { | |
662 | info("error during open sequence: %d", i); | |
663 | mutex_unlock(&cam->lock); | |
664 | return err; | |
665 | } | |
666 | } | |
667 | ||
668 | file->private_data = vdev; | |
669 | ||
670 | /* Added some delay here, since opening/closing the camera quickly, | |
671 | * like Ekiga does during its startup, can crash the webcam | |
672 | */ | |
673 | mdelay(100); | |
674 | ||
675 | mutex_unlock(&cam->lock); | |
676 | return 0; | |
677 | } | |
678 | ||
679 | ||
680 | /* release the camera */ | |
681 | static int zr364xx_release(struct inode *inode, struct file *file) | |
682 | { | |
683 | struct video_device *vdev = video_devdata(file); | |
684 | struct zr364xx_camera *cam; | |
685 | struct usb_device *udev; | |
686 | int i, err; | |
687 | ||
688 | DBG("zr364xx_release"); | |
689 | ||
690 | if (vdev == NULL) | |
691 | return -ENODEV; | |
692 | cam = video_get_drvdata(vdev); | |
693 | ||
694 | udev = cam->udev; | |
695 | ||
696 | mutex_lock(&cam->lock); | |
697 | for (i = 0; i < 2; i++) { | |
698 | err = | |
699 | send_control_msg(udev, 1, init[cam->method][i].value, | |
700 | 0, init[i][cam->method].bytes, | |
701 | init[cam->method][i].size); | |
702 | if (err < 0) { | |
703 | info("error during release sequence"); | |
704 | mutex_unlock(&cam->lock); | |
705 | return err; | |
706 | } | |
707 | } | |
708 | ||
709 | file->private_data = NULL; | |
710 | video_exclusive_release(inode, file); | |
711 | ||
712 | /* Added some delay here, since opening/closing the camera quickly, | |
713 | * like Ekiga does during its startup, can crash the webcam | |
714 | */ | |
715 | mdelay(100); | |
716 | ||
717 | mutex_unlock(&cam->lock); | |
718 | return 0; | |
719 | } | |
720 | ||
721 | ||
722 | static int zr364xx_mmap(struct file *file, struct vm_area_struct *vma) | |
723 | { | |
724 | void *pos; | |
725 | unsigned long start = vma->vm_start; | |
726 | unsigned long size = vma->vm_end - vma->vm_start; | |
727 | struct video_device *vdev = video_devdata(file); | |
728 | struct zr364xx_camera *cam; | |
729 | ||
730 | DBG("zr364xx_mmap: %ld\n", size); | |
731 | ||
732 | if (vdev == NULL) | |
733 | return -ENODEV; | |
734 | cam = video_get_drvdata(vdev); | |
735 | ||
736 | pos = cam->framebuf; | |
737 | while (size > 0) { | |
738 | if (vm_insert_page(vma, start, vmalloc_to_page(pos))) | |
739 | return -EAGAIN; | |
740 | start += PAGE_SIZE; | |
741 | pos += PAGE_SIZE; | |
742 | if (size > PAGE_SIZE) | |
743 | size -= PAGE_SIZE; | |
744 | else | |
745 | size = 0; | |
746 | } | |
747 | ||
748 | return 0; | |
749 | } | |
750 | ||
751 | ||
bdd36658 | 752 | static const struct file_operations zr364xx_fops = { |
b7eee616 AJ |
753 | .owner = THIS_MODULE, |
754 | .open = zr364xx_open, | |
755 | .release = zr364xx_release, | |
756 | .read = zr364xx_read, | |
757 | .mmap = zr364xx_mmap, | |
758 | .ioctl = video_ioctl2, | |
759 | .llseek = no_llseek, | |
760 | }; | |
761 | ||
762 | static struct video_device zr364xx_template = { | |
763 | .owner = THIS_MODULE, | |
764 | .name = DRIVER_DESC, | |
765 | .type = VID_TYPE_CAPTURE, | |
766 | .fops = &zr364xx_fops, | |
767 | .release = video_device_release, | |
768 | .minor = -1, | |
769 | ||
770 | .vidioc_querycap = zr364xx_vidioc_querycap, | |
771 | .vidioc_enum_fmt_cap = zr364xx_vidioc_enum_fmt_cap, | |
772 | .vidioc_try_fmt_cap = zr364xx_vidioc_try_fmt_cap, | |
773 | .vidioc_s_fmt_cap = zr364xx_vidioc_s_fmt_cap, | |
774 | .vidioc_g_fmt_cap = zr364xx_vidioc_g_fmt_cap, | |
775 | .vidioc_enum_input = zr364xx_vidioc_enum_input, | |
776 | .vidioc_g_input = zr364xx_vidioc_g_input, | |
777 | .vidioc_s_input = zr364xx_vidioc_s_input, | |
778 | .vidioc_streamon = zr364xx_vidioc_streamon, | |
779 | .vidioc_streamoff = zr364xx_vidioc_streamoff, | |
780 | .vidioc_queryctrl = zr364xx_vidioc_queryctrl, | |
781 | .vidioc_g_ctrl = zr364xx_vidioc_g_ctrl, | |
782 | .vidioc_s_ctrl = zr364xx_vidioc_s_ctrl, | |
783 | }; | |
784 | ||
785 | ||
786 | ||
787 | /*******************/ | |
788 | /* USB integration */ | |
789 | /*******************/ | |
790 | ||
791 | static int zr364xx_probe(struct usb_interface *intf, | |
792 | const struct usb_device_id *id) | |
793 | { | |
794 | struct usb_device *udev = interface_to_usbdev(intf); | |
795 | struct zr364xx_camera *cam = NULL; | |
783aa8fa | 796 | int err; |
b7eee616 AJ |
797 | |
798 | DBG("probing..."); | |
799 | ||
800 | info(DRIVER_DESC " compatible webcam plugged"); | |
801 | info("model %04x:%04x detected", udev->descriptor.idVendor, | |
802 | udev->descriptor.idProduct); | |
803 | ||
783aa8fa AM |
804 | cam = kzalloc(sizeof(struct zr364xx_camera), GFP_KERNEL); |
805 | if (cam == NULL) { | |
b7eee616 | 806 | info("cam: out of memory !"); |
783aa8fa | 807 | return -ENOMEM; |
b7eee616 | 808 | } |
b7eee616 AJ |
809 | /* save the init method used by this camera */ |
810 | cam->method = id->driver_info; | |
811 | ||
812 | cam->vdev = video_device_alloc(); | |
813 | if (cam->vdev == NULL) { | |
814 | info("cam->vdev: out of memory !"); | |
815 | kfree(cam); | |
783aa8fa | 816 | return -ENOMEM; |
b7eee616 AJ |
817 | } |
818 | memcpy(cam->vdev, &zr364xx_template, sizeof(zr364xx_template)); | |
819 | video_set_drvdata(cam->vdev, cam); | |
820 | if (debug) | |
821 | cam->vdev->debug = V4L2_DEBUG_IOCTL | V4L2_DEBUG_IOCTL_ARG; | |
822 | ||
823 | cam->udev = udev; | |
824 | ||
825 | if ((cam->buffer = kmalloc(BUFFER_SIZE, GFP_KERNEL)) == NULL) { | |
826 | info("cam->buffer: out of memory !"); | |
827 | video_device_release(cam->vdev); | |
828 | kfree(cam); | |
829 | return -ENODEV; | |
830 | } | |
831 | ||
832 | switch (mode) { | |
833 | case 1: | |
834 | info("160x120 mode selected"); | |
835 | cam->width = 160; | |
836 | cam->height = 120; | |
837 | break; | |
838 | case 2: | |
839 | info("640x480 mode selected"); | |
840 | cam->width = 640; | |
841 | cam->height = 480; | |
842 | break; | |
843 | default: | |
844 | info("320x240 mode selected"); | |
845 | cam->width = 320; | |
846 | cam->height = 240; | |
847 | break; | |
848 | } | |
849 | ||
850 | m0d1[0] = mode; | |
851 | m1[2].value = 0xf000 + mode; | |
852 | m2[1].value = 0xf000 + mode; | |
853 | header2[437] = cam->height / 256; | |
854 | header2[438] = cam->height % 256; | |
855 | header2[439] = cam->width / 256; | |
856 | header2[440] = cam->width % 256; | |
857 | ||
858 | cam->nb = 0; | |
859 | cam->brightness = 64; | |
860 | mutex_init(&cam->lock); | |
861 | ||
783aa8fa AM |
862 | err = video_register_device(cam->vdev, VFL_TYPE_GRABBER, -1); |
863 | if (err) { | |
b7eee616 AJ |
864 | info("video_register_device failed"); |
865 | video_device_release(cam->vdev); | |
866 | kfree(cam->buffer); | |
867 | kfree(cam); | |
783aa8fa | 868 | return err; |
b7eee616 AJ |
869 | } |
870 | ||
871 | usb_set_intfdata(intf, cam); | |
872 | ||
873 | info(DRIVER_DESC " controlling video device %d", cam->vdev->minor); | |
874 | return 0; | |
875 | } | |
876 | ||
877 | ||
878 | static void zr364xx_disconnect(struct usb_interface *intf) | |
879 | { | |
880 | struct zr364xx_camera *cam = usb_get_intfdata(intf); | |
881 | usb_set_intfdata(intf, NULL); | |
882 | dev_set_drvdata(&intf->dev, NULL); | |
883 | info(DRIVER_DESC " webcam unplugged"); | |
884 | if (cam->vdev) | |
885 | video_unregister_device(cam->vdev); | |
886 | cam->vdev = NULL; | |
887 | kfree(cam->buffer); | |
888 | if (cam->framebuf) | |
889 | vfree(cam->framebuf); | |
890 | kfree(cam); | |
891 | } | |
892 | ||
893 | ||
894 | ||
895 | /**********************/ | |
896 | /* Module integration */ | |
897 | /**********************/ | |
898 | ||
899 | static struct usb_driver zr364xx_driver = { | |
900 | .name = "zr364xx", | |
901 | .probe = zr364xx_probe, | |
902 | .disconnect = zr364xx_disconnect, | |
903 | .id_table = device_table | |
904 | }; | |
905 | ||
906 | ||
907 | static int __init zr364xx_init(void) | |
908 | { | |
909 | int retval; | |
783aa8fa | 910 | retval = usb_register(&zr364xx_driver); |
b7eee616 AJ |
911 | if (retval) |
912 | info("usb_register failed!"); | |
913 | else | |
914 | info(DRIVER_DESC " module loaded"); | |
915 | return retval; | |
916 | } | |
917 | ||
918 | ||
919 | static void __exit zr364xx_exit(void) | |
920 | { | |
921 | info(DRIVER_DESC " module unloaded"); | |
922 | usb_deregister(&zr364xx_driver); | |
923 | } | |
924 | ||
925 | ||
926 | module_init(zr364xx_init); | |
927 | module_exit(zr364xx_exit); | |
928 | ||
929 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
930 | MODULE_DESCRIPTION(DRIVER_DESC); | |
931 | MODULE_LICENSE("GPL"); |