diff options
author | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
---|---|---|
committer | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
commit | fcc9d2e5a6c89d22b8b773a64fb4ad21ac318446 (patch) | |
tree | a57612d1888735a2ec7972891b68c1ac5ec8faea /drivers/media/video/zr364xx.c | |
parent | 8dea78da5cee153b8af9c07a2745f6c55057fe12 (diff) |
Diffstat (limited to 'drivers/media/video/zr364xx.c')
-rw-r--r-- | drivers/media/video/zr364xx.c | 1721 |
1 files changed, 1721 insertions, 0 deletions
diff --git a/drivers/media/video/zr364xx.c b/drivers/media/video/zr364xx.c new file mode 100644 index 00000000000..c492846c1c5 --- /dev/null +++ b/drivers/media/video/zr364xx.c | |||
@@ -0,0 +1,1721 @@ | |||
1 | /* | ||
2 | * Zoran 364xx based USB webcam module version 0.73 | ||
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 | * Some video buffer code by Lamarque based on s2255drv.c and vivi.c drivers. | ||
14 | * | ||
15 | * This program is free software; you can redistribute it and/or modify | ||
16 | * it under the terms of the GNU General Public License as published by | ||
17 | * the Free Software Foundation; either version 2 of the License, or | ||
18 | * (at your option) any later version. | ||
19 | * | ||
20 | * This program is distributed in the hope that it will be useful, | ||
21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
23 | * GNU General Public License for more details. | ||
24 | * | ||
25 | * You should have received a copy of the GNU General Public License | ||
26 | * along with this program; if not, write to the Free Software | ||
27 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
28 | */ | ||
29 | |||
30 | |||
31 | #include <linux/module.h> | ||
32 | #include <linux/init.h> | ||
33 | #include <linux/usb.h> | ||
34 | #include <linux/vmalloc.h> | ||
35 | #include <linux/slab.h> | ||
36 | #include <linux/proc_fs.h> | ||
37 | #include <linux/highmem.h> | ||
38 | #include <media/v4l2-common.h> | ||
39 | #include <media/v4l2-ioctl.h> | ||
40 | #include <media/videobuf-vmalloc.h> | ||
41 | |||
42 | |||
43 | /* Version Information */ | ||
44 | #define DRIVER_VERSION "0.7.4" | ||
45 | #define DRIVER_AUTHOR "Antoine Jacquet, http://royale.zerezo.com/" | ||
46 | #define DRIVER_DESC "Zoran 364xx" | ||
47 | |||
48 | |||
49 | /* Camera */ | ||
50 | #define FRAMES 1 | ||
51 | #define MAX_FRAME_SIZE 200000 | ||
52 | #define BUFFER_SIZE 0x1000 | ||
53 | #define CTRL_TIMEOUT 500 | ||
54 | |||
55 | #define ZR364XX_DEF_BUFS 4 | ||
56 | #define ZR364XX_READ_IDLE 0 | ||
57 | #define ZR364XX_READ_FRAME 1 | ||
58 | |||
59 | /* Debug macro */ | ||
60 | #define DBG(fmt, args...) \ | ||
61 | do { \ | ||
62 | if (debug) { \ | ||
63 | printk(KERN_INFO KBUILD_MODNAME " " fmt, ##args); \ | ||
64 | } \ | ||
65 | } while (0) | ||
66 | |||
67 | /*#define FULL_DEBUG 1*/ | ||
68 | #ifdef FULL_DEBUG | ||
69 | #define _DBG DBG | ||
70 | #else | ||
71 | #define _DBG(fmt, args...) | ||
72 | #endif | ||
73 | |||
74 | /* Init methods, need to find nicer names for these | ||
75 | * the exact names of the chipsets would be the best if someone finds it */ | ||
76 | #define METHOD0 0 | ||
77 | #define METHOD1 1 | ||
78 | #define METHOD2 2 | ||
79 | #define METHOD3 3 | ||
80 | |||
81 | |||
82 | /* Module parameters */ | ||
83 | static int debug; | ||
84 | static int mode; | ||
85 | |||
86 | |||
87 | /* Module parameters interface */ | ||
88 | module_param(debug, int, 0644); | ||
89 | MODULE_PARM_DESC(debug, "Debug level"); | ||
90 | module_param(mode, int, 0644); | ||
91 | MODULE_PARM_DESC(mode, "0 = 320x240, 1 = 160x120, 2 = 640x480"); | ||
92 | |||
93 | |||
94 | /* Devices supported by this driver | ||
95 | * .driver_info contains the init method used by the camera */ | ||
96 | static struct usb_device_id device_table[] = { | ||
97 | {USB_DEVICE(0x08ca, 0x0109), .driver_info = METHOD0 }, | ||
98 | {USB_DEVICE(0x041e, 0x4024), .driver_info = METHOD0 }, | ||
99 | {USB_DEVICE(0x0d64, 0x0108), .driver_info = METHOD0 }, | ||
100 | {USB_DEVICE(0x0546, 0x3187), .driver_info = METHOD0 }, | ||
101 | {USB_DEVICE(0x0d64, 0x3108), .driver_info = METHOD0 }, | ||
102 | {USB_DEVICE(0x0595, 0x4343), .driver_info = METHOD0 }, | ||
103 | {USB_DEVICE(0x0bb0, 0x500d), .driver_info = METHOD0 }, | ||
104 | {USB_DEVICE(0x0feb, 0x2004), .driver_info = METHOD0 }, | ||
105 | {USB_DEVICE(0x055f, 0xb500), .driver_info = METHOD0 }, | ||
106 | {USB_DEVICE(0x08ca, 0x2062), .driver_info = METHOD2 }, | ||
107 | {USB_DEVICE(0x052b, 0x1a18), .driver_info = METHOD1 }, | ||
108 | {USB_DEVICE(0x04c8, 0x0729), .driver_info = METHOD0 }, | ||
109 | {USB_DEVICE(0x04f2, 0xa208), .driver_info = METHOD0 }, | ||
110 | {USB_DEVICE(0x0784, 0x0040), .driver_info = METHOD1 }, | ||
111 | {USB_DEVICE(0x06d6, 0x0034), .driver_info = METHOD0 }, | ||
112 | {USB_DEVICE(0x0a17, 0x0062), .driver_info = METHOD2 }, | ||
113 | {USB_DEVICE(0x06d6, 0x003b), .driver_info = METHOD0 }, | ||
114 | {USB_DEVICE(0x0a17, 0x004e), .driver_info = METHOD2 }, | ||
115 | {USB_DEVICE(0x041e, 0x405d), .driver_info = METHOD2 }, | ||
116 | {USB_DEVICE(0x08ca, 0x2102), .driver_info = METHOD3 }, | ||
117 | {USB_DEVICE(0x06d6, 0x003d), .driver_info = METHOD0 }, | ||
118 | {} /* Terminating entry */ | ||
119 | }; | ||
120 | |||
121 | MODULE_DEVICE_TABLE(usb, device_table); | ||
122 | |||
123 | struct zr364xx_mode { | ||
124 | u32 color; /* output video color format */ | ||
125 | u32 brightness; /* brightness */ | ||
126 | }; | ||
127 | |||
128 | /* frame structure */ | ||
129 | struct zr364xx_framei { | ||
130 | unsigned long ulState; /* ulState:ZR364XX_READ_IDLE, | ||
131 | ZR364XX_READ_FRAME */ | ||
132 | void *lpvbits; /* image data */ | ||
133 | unsigned long cur_size; /* current data copied to it */ | ||
134 | }; | ||
135 | |||
136 | /* image buffer structure */ | ||
137 | struct zr364xx_bufferi { | ||
138 | unsigned long dwFrames; /* number of frames in buffer */ | ||
139 | struct zr364xx_framei frame[FRAMES]; /* array of FRAME structures */ | ||
140 | }; | ||
141 | |||
142 | struct zr364xx_dmaqueue { | ||
143 | struct list_head active; | ||
144 | struct zr364xx_camera *cam; | ||
145 | }; | ||
146 | |||
147 | struct zr364xx_pipeinfo { | ||
148 | u32 transfer_size; | ||
149 | u8 *transfer_buffer; | ||
150 | u32 state; | ||
151 | void *stream_urb; | ||
152 | void *cam; /* back pointer to zr364xx_camera struct */ | ||
153 | u32 err_count; | ||
154 | u32 idx; | ||
155 | }; | ||
156 | |||
157 | struct zr364xx_fmt { | ||
158 | char *name; | ||
159 | u32 fourcc; | ||
160 | int depth; | ||
161 | }; | ||
162 | |||
163 | /* image formats. */ | ||
164 | static const struct zr364xx_fmt formats[] = { | ||
165 | { | ||
166 | .name = "JPG", | ||
167 | .fourcc = V4L2_PIX_FMT_JPEG, | ||
168 | .depth = 24 | ||
169 | } | ||
170 | }; | ||
171 | |||
172 | /* Camera stuff */ | ||
173 | struct zr364xx_camera { | ||
174 | struct usb_device *udev; /* save off the usb device pointer */ | ||
175 | struct usb_interface *interface;/* the interface for this device */ | ||
176 | struct video_device *vdev; /* v4l video device */ | ||
177 | int nb; | ||
178 | struct zr364xx_bufferi buffer; | ||
179 | int skip; | ||
180 | int width; | ||
181 | int height; | ||
182 | int method; | ||
183 | struct mutex lock; | ||
184 | struct mutex open_lock; | ||
185 | int users; | ||
186 | |||
187 | spinlock_t slock; | ||
188 | struct zr364xx_dmaqueue vidq; | ||
189 | int resources; | ||
190 | int last_frame; | ||
191 | int cur_frame; | ||
192 | unsigned long frame_count; | ||
193 | int b_acquire; | ||
194 | struct zr364xx_pipeinfo pipe[1]; | ||
195 | |||
196 | u8 read_endpoint; | ||
197 | |||
198 | const struct zr364xx_fmt *fmt; | ||
199 | struct videobuf_queue vb_vidq; | ||
200 | enum v4l2_buf_type type; | ||
201 | struct zr364xx_mode mode; | ||
202 | }; | ||
203 | |||
204 | /* buffer for one video frame */ | ||
205 | struct zr364xx_buffer { | ||
206 | /* common v4l buffer stuff -- must be first */ | ||
207 | struct videobuf_buffer vb; | ||
208 | const struct zr364xx_fmt *fmt; | ||
209 | }; | ||
210 | |||
211 | /* function used to send initialisation commands to the camera */ | ||
212 | static int send_control_msg(struct usb_device *udev, u8 request, u16 value, | ||
213 | u16 index, unsigned char *cp, u16 size) | ||
214 | { | ||
215 | int status; | ||
216 | |||
217 | unsigned char *transfer_buffer = kmalloc(size, GFP_KERNEL); | ||
218 | if (!transfer_buffer) { | ||
219 | dev_err(&udev->dev, "kmalloc(%d) failed\n", size); | ||
220 | return -ENOMEM; | ||
221 | } | ||
222 | |||
223 | memcpy(transfer_buffer, cp, size); | ||
224 | |||
225 | status = usb_control_msg(udev, | ||
226 | usb_sndctrlpipe(udev, 0), | ||
227 | request, | ||
228 | USB_DIR_OUT | USB_TYPE_VENDOR | | ||
229 | USB_RECIP_DEVICE, value, index, | ||
230 | transfer_buffer, size, CTRL_TIMEOUT); | ||
231 | |||
232 | kfree(transfer_buffer); | ||
233 | |||
234 | if (status < 0) | ||
235 | dev_err(&udev->dev, | ||
236 | "Failed sending control message, error %d.\n", status); | ||
237 | |||
238 | return status; | ||
239 | } | ||
240 | |||
241 | |||
242 | /* Control messages sent to the camera to initialize it | ||
243 | * and launch the capture */ | ||
244 | typedef struct { | ||
245 | unsigned int value; | ||
246 | unsigned int size; | ||
247 | unsigned char *bytes; | ||
248 | } message; | ||
249 | |||
250 | /* method 0 */ | ||
251 | static unsigned char m0d1[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; | ||
252 | static unsigned char m0d2[] = { 0, 0, 0, 0, 0, 0 }; | ||
253 | static unsigned char m0d3[] = { 0, 0 }; | ||
254 | static message m0[] = { | ||
255 | {0x1f30, 0, NULL}, | ||
256 | {0xd000, 0, NULL}, | ||
257 | {0x3370, sizeof(m0d1), m0d1}, | ||
258 | {0x2000, 0, NULL}, | ||
259 | {0x2f0f, 0, NULL}, | ||
260 | {0x2610, sizeof(m0d2), m0d2}, | ||
261 | {0xe107, 0, NULL}, | ||
262 | {0x2502, 0, NULL}, | ||
263 | {0x1f70, 0, NULL}, | ||
264 | {0xd000, 0, NULL}, | ||
265 | {0x9a01, sizeof(m0d3), m0d3}, | ||
266 | {-1, -1, NULL} | ||
267 | }; | ||
268 | |||
269 | /* method 1 */ | ||
270 | static unsigned char m1d1[] = { 0xff, 0xff }; | ||
271 | static unsigned char m1d2[] = { 0x00, 0x00 }; | ||
272 | static message m1[] = { | ||
273 | {0x1f30, 0, NULL}, | ||
274 | {0xd000, 0, NULL}, | ||
275 | {0xf000, 0, NULL}, | ||
276 | {0x2000, 0, NULL}, | ||
277 | {0x2f0f, 0, NULL}, | ||
278 | {0x2650, 0, NULL}, | ||
279 | {0xe107, 0, NULL}, | ||
280 | {0x2502, sizeof(m1d1), m1d1}, | ||
281 | {0x1f70, 0, NULL}, | ||
282 | {0xd000, 0, NULL}, | ||
283 | {0xd000, 0, NULL}, | ||
284 | {0xd000, 0, NULL}, | ||
285 | {0x9a01, sizeof(m1d2), m1d2}, | ||
286 | {-1, -1, NULL} | ||
287 | }; | ||
288 | |||
289 | /* method 2 */ | ||
290 | static unsigned char m2d1[] = { 0xff, 0xff }; | ||
291 | static message m2[] = { | ||
292 | {0x1f30, 0, NULL}, | ||
293 | {0xf000, 0, NULL}, | ||
294 | {0x2000, 0, NULL}, | ||
295 | {0x2f0f, 0, NULL}, | ||
296 | {0x2650, 0, NULL}, | ||
297 | {0xe107, 0, NULL}, | ||
298 | {0x2502, sizeof(m2d1), m2d1}, | ||
299 | {0x1f70, 0, NULL}, | ||
300 | {-1, -1, NULL} | ||
301 | }; | ||
302 | |||
303 | /* init table */ | ||
304 | static message *init[4] = { m0, m1, m2, m2 }; | ||
305 | |||
306 | |||
307 | /* JPEG static data in header (Huffman table, etc) */ | ||
308 | static unsigned char header1[] = { | ||
309 | 0xFF, 0xD8, | ||
310 | /* | ||
311 | 0xFF, 0xE0, 0x00, 0x10, 'J', 'F', 'I', 'F', | ||
312 | 0x00, 0x01, 0x01, 0x00, 0x33, 0x8A, 0x00, 0x00, 0x33, 0x88, | ||
313 | */ | ||
314 | 0xFF, 0xDB, 0x00, 0x84 | ||
315 | }; | ||
316 | static unsigned char header2[] = { | ||
317 | 0xFF, 0xC4, 0x00, 0x1F, 0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, | ||
318 | 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
319 | 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, | ||
320 | 0xFF, 0xC4, 0x00, 0xB5, 0x10, 0x00, 0x02, 0x01, 0x03, 0x03, 0x02, | ||
321 | 0x04, 0x03, 0x05, 0x05, 0x04, 0x04, 0x00, 0x00, 0x01, 0x7D, 0x01, | ||
322 | 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06, | ||
323 | 0x13, 0x51, 0x61, 0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xA1, | ||
324 | 0x08, 0x23, 0x42, 0xB1, 0xC1, 0x15, 0x52, 0xD1, 0xF0, 0x24, 0x33, | ||
325 | 0x62, 0x72, 0x82, 0x09, 0x0A, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x25, | ||
326 | 0x26, 0x27, 0x28, 0x29, 0x2A, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, | ||
327 | 0x3A, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, | ||
328 | 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, | ||
329 | 0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, | ||
330 | 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93, 0x94, | ||
331 | 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, | ||
332 | 0xA7, 0xA8, 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, | ||
333 | 0xB9, 0xBA, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, | ||
334 | 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xE1, 0xE2, | ||
335 | 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xF1, 0xF2, 0xF3, | ||
336 | 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFF, 0xC4, 0x00, 0x1F, | ||
337 | 0x01, 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, | ||
338 | 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03, 0x04, | ||
339 | 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0xFF, 0xC4, 0x00, 0xB5, | ||
340 | 0x11, 0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04, 0x07, 0x05, | ||
341 | 0x04, 0x04, 0x00, 0x01, 0x02, 0x77, 0x00, 0x01, 0x02, 0x03, 0x11, | ||
342 | 0x04, 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, | ||
343 | 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xA1, 0xB1, 0xC1, | ||
344 | 0x09, 0x23, 0x33, 0x52, 0xF0, 0x15, 0x62, 0x72, 0xD1, 0x0A, 0x16, | ||
345 | 0x24, 0x34, 0xE1, 0x25, 0xF1, 0x17, 0x18, 0x19, 0x1A, 0x26, 0x27, | ||
346 | 0x28, 0x29, 0x2A, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43, 0x44, | ||
347 | 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, 0x55, 0x56, 0x57, | ||
348 | 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, | ||
349 | 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x82, 0x83, 0x84, | ||
350 | 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93, 0x94, 0x95, 0x96, | ||
351 | 0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, | ||
352 | 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, | ||
353 | 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2, 0xD3, | ||
354 | 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xE2, 0xE3, 0xE4, 0xE5, | ||
355 | 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, | ||
356 | 0xF8, 0xF9, 0xFA, 0xFF, 0xC0, 0x00, 0x11, 0x08, 0x00, 0xF0, 0x01, | ||
357 | 0x40, 0x03, 0x01, 0x21, 0x00, 0x02, 0x11, 0x01, 0x03, 0x11, 0x01, | ||
358 | 0xFF, 0xDA, 0x00, 0x0C, 0x03, 0x01, 0x00, 0x02, 0x11, 0x03, 0x11, | ||
359 | 0x00, 0x3F, 0x00 | ||
360 | }; | ||
361 | static unsigned char header3; | ||
362 | |||
363 | /* ------------------------------------------------------------------ | ||
364 | Videobuf operations | ||
365 | ------------------------------------------------------------------*/ | ||
366 | |||
367 | static int buffer_setup(struct videobuf_queue *vq, unsigned int *count, | ||
368 | unsigned int *size) | ||
369 | { | ||
370 | struct zr364xx_camera *cam = vq->priv_data; | ||
371 | |||
372 | *size = cam->width * cam->height * (cam->fmt->depth >> 3); | ||
373 | |||
374 | if (*count == 0) | ||
375 | *count = ZR364XX_DEF_BUFS; | ||
376 | |||
377 | if (*size * *count > ZR364XX_DEF_BUFS * 1024 * 1024) | ||
378 | *count = (ZR364XX_DEF_BUFS * 1024 * 1024) / *size; | ||
379 | |||
380 | return 0; | ||
381 | } | ||
382 | |||
383 | static void free_buffer(struct videobuf_queue *vq, struct zr364xx_buffer *buf) | ||
384 | { | ||
385 | _DBG("%s\n", __func__); | ||
386 | |||
387 | if (in_interrupt()) | ||
388 | BUG(); | ||
389 | |||
390 | videobuf_vmalloc_free(&buf->vb); | ||
391 | buf->vb.state = VIDEOBUF_NEEDS_INIT; | ||
392 | } | ||
393 | |||
394 | static int buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, | ||
395 | enum v4l2_field field) | ||
396 | { | ||
397 | struct zr364xx_camera *cam = vq->priv_data; | ||
398 | struct zr364xx_buffer *buf = container_of(vb, struct zr364xx_buffer, | ||
399 | vb); | ||
400 | int rc; | ||
401 | |||
402 | DBG("%s, field=%d, fmt name = %s\n", __func__, field, cam->fmt != NULL ? | ||
403 | cam->fmt->name : ""); | ||
404 | if (cam->fmt == NULL) | ||
405 | return -EINVAL; | ||
406 | |||
407 | buf->vb.size = cam->width * cam->height * (cam->fmt->depth >> 3); | ||
408 | |||
409 | if (buf->vb.baddr != 0 && buf->vb.bsize < buf->vb.size) { | ||
410 | DBG("invalid buffer prepare\n"); | ||
411 | return -EINVAL; | ||
412 | } | ||
413 | |||
414 | buf->fmt = cam->fmt; | ||
415 | buf->vb.width = cam->width; | ||
416 | buf->vb.height = cam->height; | ||
417 | buf->vb.field = field; | ||
418 | |||
419 | if (buf->vb.state == VIDEOBUF_NEEDS_INIT) { | ||
420 | rc = videobuf_iolock(vq, &buf->vb, NULL); | ||
421 | if (rc < 0) | ||
422 | goto fail; | ||
423 | } | ||
424 | |||
425 | buf->vb.state = VIDEOBUF_PREPARED; | ||
426 | return 0; | ||
427 | fail: | ||
428 | free_buffer(vq, buf); | ||
429 | return rc; | ||
430 | } | ||
431 | |||
432 | static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) | ||
433 | { | ||
434 | struct zr364xx_buffer *buf = container_of(vb, struct zr364xx_buffer, | ||
435 | vb); | ||
436 | struct zr364xx_camera *cam = vq->priv_data; | ||
437 | |||
438 | _DBG("%s\n", __func__); | ||
439 | |||
440 | buf->vb.state = VIDEOBUF_QUEUED; | ||
441 | list_add_tail(&buf->vb.queue, &cam->vidq.active); | ||
442 | } | ||
443 | |||
444 | static void buffer_release(struct videobuf_queue *vq, | ||
445 | struct videobuf_buffer *vb) | ||
446 | { | ||
447 | struct zr364xx_buffer *buf = container_of(vb, struct zr364xx_buffer, | ||
448 | vb); | ||
449 | |||
450 | _DBG("%s\n", __func__); | ||
451 | free_buffer(vq, buf); | ||
452 | } | ||
453 | |||
454 | static struct videobuf_queue_ops zr364xx_video_qops = { | ||
455 | .buf_setup = buffer_setup, | ||
456 | .buf_prepare = buffer_prepare, | ||
457 | .buf_queue = buffer_queue, | ||
458 | .buf_release = buffer_release, | ||
459 | }; | ||
460 | |||
461 | /********************/ | ||
462 | /* V4L2 integration */ | ||
463 | /********************/ | ||
464 | static int zr364xx_vidioc_streamon(struct file *file, void *priv, | ||
465 | enum v4l2_buf_type type); | ||
466 | |||
467 | static ssize_t zr364xx_read(struct file *file, char __user *buf, size_t count, | ||
468 | loff_t * ppos) | ||
469 | { | ||
470 | struct zr364xx_camera *cam = video_drvdata(file); | ||
471 | |||
472 | _DBG("%s\n", __func__); | ||
473 | |||
474 | if (!buf) | ||
475 | return -EINVAL; | ||
476 | |||
477 | if (!count) | ||
478 | return -EINVAL; | ||
479 | |||
480 | if (cam->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && | ||
481 | zr364xx_vidioc_streamon(file, cam, cam->type) == 0) { | ||
482 | DBG("%s: reading %d bytes at pos %d.\n", __func__, (int) count, | ||
483 | (int) *ppos); | ||
484 | |||
485 | /* NoMan Sux ! */ | ||
486 | return videobuf_read_one(&cam->vb_vidq, buf, count, ppos, | ||
487 | file->f_flags & O_NONBLOCK); | ||
488 | } | ||
489 | |||
490 | return 0; | ||
491 | } | ||
492 | |||
493 | /* video buffer vmalloc implementation based partly on VIVI driver which is | ||
494 | * Copyright (c) 2006 by | ||
495 | * Mauro Carvalho Chehab <mchehab--a.t--infradead.org> | ||
496 | * Ted Walther <ted--a.t--enumera.com> | ||
497 | * John Sokol <sokol--a.t--videotechnology.com> | ||
498 | * http://v4l.videotechnology.com/ | ||
499 | * | ||
500 | */ | ||
501 | static void zr364xx_fillbuff(struct zr364xx_camera *cam, | ||
502 | struct zr364xx_buffer *buf, | ||
503 | int jpgsize) | ||
504 | { | ||
505 | int pos = 0; | ||
506 | struct timeval ts; | ||
507 | const char *tmpbuf; | ||
508 | char *vbuf = videobuf_to_vmalloc(&buf->vb); | ||
509 | unsigned long last_frame; | ||
510 | struct zr364xx_framei *frm; | ||
511 | |||
512 | if (!vbuf) | ||
513 | return; | ||
514 | |||
515 | last_frame = cam->last_frame; | ||
516 | if (last_frame != -1) { | ||
517 | frm = &cam->buffer.frame[last_frame]; | ||
518 | tmpbuf = (const char *)cam->buffer.frame[last_frame].lpvbits; | ||
519 | switch (buf->fmt->fourcc) { | ||
520 | case V4L2_PIX_FMT_JPEG: | ||
521 | buf->vb.size = jpgsize; | ||
522 | memcpy(vbuf, tmpbuf, buf->vb.size); | ||
523 | break; | ||
524 | default: | ||
525 | printk(KERN_DEBUG KBUILD_MODNAME ": unknown format?\n"); | ||
526 | } | ||
527 | cam->last_frame = -1; | ||
528 | } else { | ||
529 | printk(KERN_ERR KBUILD_MODNAME ": =======no frame\n"); | ||
530 | return; | ||
531 | } | ||
532 | DBG("%s: Buffer 0x%08lx size= %d\n", __func__, | ||
533 | (unsigned long)vbuf, pos); | ||
534 | /* tell v4l buffer was filled */ | ||
535 | |||
536 | buf->vb.field_count = cam->frame_count * 2; | ||
537 | do_gettimeofday(&ts); | ||
538 | buf->vb.ts = ts; | ||
539 | buf->vb.state = VIDEOBUF_DONE; | ||
540 | } | ||
541 | |||
542 | static int zr364xx_got_frame(struct zr364xx_camera *cam, int jpgsize) | ||
543 | { | ||
544 | struct zr364xx_dmaqueue *dma_q = &cam->vidq; | ||
545 | struct zr364xx_buffer *buf; | ||
546 | unsigned long flags = 0; | ||
547 | int rc = 0; | ||
548 | |||
549 | DBG("wakeup: %p\n", &dma_q); | ||
550 | spin_lock_irqsave(&cam->slock, flags); | ||
551 | |||
552 | if (list_empty(&dma_q->active)) { | ||
553 | DBG("No active queue to serve\n"); | ||
554 | rc = -1; | ||
555 | goto unlock; | ||
556 | } | ||
557 | buf = list_entry(dma_q->active.next, | ||
558 | struct zr364xx_buffer, vb.queue); | ||
559 | |||
560 | if (!waitqueue_active(&buf->vb.done)) { | ||
561 | /* no one active */ | ||
562 | rc = -1; | ||
563 | goto unlock; | ||
564 | } | ||
565 | list_del(&buf->vb.queue); | ||
566 | do_gettimeofday(&buf->vb.ts); | ||
567 | DBG("[%p/%d] wakeup\n", buf, buf->vb.i); | ||
568 | zr364xx_fillbuff(cam, buf, jpgsize); | ||
569 | wake_up(&buf->vb.done); | ||
570 | DBG("wakeup [buf/i] [%p/%d]\n", buf, buf->vb.i); | ||
571 | unlock: | ||
572 | spin_unlock_irqrestore(&cam->slock, flags); | ||
573 | return rc; | ||
574 | } | ||
575 | |||
576 | /* this function moves the usb stream read pipe data | ||
577 | * into the system buffers. | ||
578 | * returns 0 on success, EAGAIN if more data to process (call this | ||
579 | * function again). | ||
580 | */ | ||
581 | static int zr364xx_read_video_callback(struct zr364xx_camera *cam, | ||
582 | struct zr364xx_pipeinfo *pipe_info, | ||
583 | struct urb *purb) | ||
584 | { | ||
585 | unsigned char *pdest; | ||
586 | unsigned char *psrc; | ||
587 | s32 idx = -1; | ||
588 | struct zr364xx_framei *frm; | ||
589 | int i = 0; | ||
590 | unsigned char *ptr = NULL; | ||
591 | |||
592 | _DBG("buffer to user\n"); | ||
593 | idx = cam->cur_frame; | ||
594 | frm = &cam->buffer.frame[idx]; | ||
595 | |||
596 | /* swap bytes if camera needs it */ | ||
597 | if (cam->method == METHOD0) { | ||
598 | u16 *buf = (u16 *)pipe_info->transfer_buffer; | ||
599 | for (i = 0; i < purb->actual_length/2; i++) | ||
600 | swab16s(buf + i); | ||
601 | } | ||
602 | |||
603 | /* search done. now find out if should be acquiring */ | ||
604 | if (!cam->b_acquire) { | ||
605 | /* we found a frame, but this channel is turned off */ | ||
606 | frm->ulState = ZR364XX_READ_IDLE; | ||
607 | return -EINVAL; | ||
608 | } | ||
609 | |||
610 | psrc = (u8 *)pipe_info->transfer_buffer; | ||
611 | ptr = pdest = frm->lpvbits; | ||
612 | |||
613 | if (frm->ulState == ZR364XX_READ_IDLE) { | ||
614 | frm->ulState = ZR364XX_READ_FRAME; | ||
615 | frm->cur_size = 0; | ||
616 | |||
617 | _DBG("jpeg header, "); | ||
618 | memcpy(ptr, header1, sizeof(header1)); | ||
619 | ptr += sizeof(header1); | ||
620 | header3 = 0; | ||
621 | memcpy(ptr, &header3, 1); | ||
622 | ptr++; | ||
623 | memcpy(ptr, psrc, 64); | ||
624 | ptr += 64; | ||
625 | header3 = 1; | ||
626 | memcpy(ptr, &header3, 1); | ||
627 | ptr++; | ||
628 | memcpy(ptr, psrc + 64, 64); | ||
629 | ptr += 64; | ||
630 | memcpy(ptr, header2, sizeof(header2)); | ||
631 | ptr += sizeof(header2); | ||
632 | memcpy(ptr, psrc + 128, | ||
633 | purb->actual_length - 128); | ||
634 | ptr += purb->actual_length - 128; | ||
635 | _DBG("header : %d %d %d %d %d %d %d %d %d\n", | ||
636 | psrc[0], psrc[1], psrc[2], | ||
637 | psrc[3], psrc[4], psrc[5], | ||
638 | psrc[6], psrc[7], psrc[8]); | ||
639 | frm->cur_size = ptr - pdest; | ||
640 | } else { | ||
641 | if (frm->cur_size + purb->actual_length > MAX_FRAME_SIZE) { | ||
642 | dev_info(&cam->udev->dev, | ||
643 | "%s: buffer (%d bytes) too small to hold " | ||
644 | "frame data. Discarding frame data.\n", | ||
645 | __func__, MAX_FRAME_SIZE); | ||
646 | } else { | ||
647 | pdest += frm->cur_size; | ||
648 | memcpy(pdest, psrc, purb->actual_length); | ||
649 | frm->cur_size += purb->actual_length; | ||
650 | } | ||
651 | } | ||
652 | /*_DBG("cur_size %lu urb size %d\n", frm->cur_size, | ||
653 | purb->actual_length);*/ | ||
654 | |||
655 | if (purb->actual_length < pipe_info->transfer_size) { | ||
656 | _DBG("****************Buffer[%d]full*************\n", idx); | ||
657 | cam->last_frame = cam->cur_frame; | ||
658 | cam->cur_frame++; | ||
659 | /* end of system frame ring buffer, start at zero */ | ||
660 | if (cam->cur_frame == cam->buffer.dwFrames) | ||
661 | cam->cur_frame = 0; | ||
662 | |||
663 | /* frame ready */ | ||
664 | /* go back to find the JPEG EOI marker */ | ||
665 | ptr = pdest = frm->lpvbits; | ||
666 | ptr += frm->cur_size - 2; | ||
667 | while (ptr > pdest) { | ||
668 | if (*ptr == 0xFF && *(ptr + 1) == 0xD9 | ||
669 | && *(ptr + 2) == 0xFF) | ||
670 | break; | ||
671 | ptr--; | ||
672 | } | ||
673 | if (ptr == pdest) | ||
674 | DBG("No EOI marker\n"); | ||
675 | |||
676 | /* Sometimes there is junk data in the middle of the picture, | ||
677 | * we want to skip this bogus frames */ | ||
678 | while (ptr > pdest) { | ||
679 | if (*ptr == 0xFF && *(ptr + 1) == 0xFF | ||
680 | && *(ptr + 2) == 0xFF) | ||
681 | break; | ||
682 | ptr--; | ||
683 | } | ||
684 | if (ptr != pdest) { | ||
685 | DBG("Bogus frame ? %d\n", ++(cam->nb)); | ||
686 | } else if (cam->b_acquire) { | ||
687 | /* we skip the 2 first frames which are usually buggy */ | ||
688 | if (cam->skip) | ||
689 | cam->skip--; | ||
690 | else { | ||
691 | _DBG("jpeg(%lu): %d %d %d %d %d %d %d %d\n", | ||
692 | frm->cur_size, | ||
693 | pdest[0], pdest[1], pdest[2], pdest[3], | ||
694 | pdest[4], pdest[5], pdest[6], pdest[7]); | ||
695 | |||
696 | zr364xx_got_frame(cam, frm->cur_size); | ||
697 | } | ||
698 | } | ||
699 | cam->frame_count++; | ||
700 | frm->ulState = ZR364XX_READ_IDLE; | ||
701 | frm->cur_size = 0; | ||
702 | } | ||
703 | /* done successfully */ | ||
704 | return 0; | ||
705 | } | ||
706 | |||
707 | static int res_get(struct zr364xx_camera *cam) | ||
708 | { | ||
709 | /* is it free? */ | ||
710 | mutex_lock(&cam->lock); | ||
711 | if (cam->resources) { | ||
712 | /* no, someone else uses it */ | ||
713 | mutex_unlock(&cam->lock); | ||
714 | return 0; | ||
715 | } | ||
716 | /* it's free, grab it */ | ||
717 | cam->resources = 1; | ||
718 | _DBG("res: get\n"); | ||
719 | mutex_unlock(&cam->lock); | ||
720 | return 1; | ||
721 | } | ||
722 | |||
723 | static inline int res_check(struct zr364xx_camera *cam) | ||
724 | { | ||
725 | return cam->resources; | ||
726 | } | ||
727 | |||
728 | static void res_free(struct zr364xx_camera *cam) | ||
729 | { | ||
730 | mutex_lock(&cam->lock); | ||
731 | cam->resources = 0; | ||
732 | mutex_unlock(&cam->lock); | ||
733 | _DBG("res: put\n"); | ||
734 | } | ||
735 | |||
736 | static int zr364xx_vidioc_querycap(struct file *file, void *priv, | ||
737 | struct v4l2_capability *cap) | ||
738 | { | ||
739 | struct zr364xx_camera *cam = video_drvdata(file); | ||
740 | |||
741 | strlcpy(cap->driver, DRIVER_DESC, sizeof(cap->driver)); | ||
742 | strlcpy(cap->card, cam->udev->product, sizeof(cap->card)); | ||
743 | strlcpy(cap->bus_info, dev_name(&cam->udev->dev), | ||
744 | sizeof(cap->bus_info)); | ||
745 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | | ||
746 | V4L2_CAP_READWRITE | | ||
747 | V4L2_CAP_STREAMING; | ||
748 | |||
749 | return 0; | ||
750 | } | ||
751 | |||
752 | static int zr364xx_vidioc_enum_input(struct file *file, void *priv, | ||
753 | struct v4l2_input *i) | ||
754 | { | ||
755 | if (i->index != 0) | ||
756 | return -EINVAL; | ||
757 | strcpy(i->name, DRIVER_DESC " Camera"); | ||
758 | i->type = V4L2_INPUT_TYPE_CAMERA; | ||
759 | return 0; | ||
760 | } | ||
761 | |||
762 | static int zr364xx_vidioc_g_input(struct file *file, void *priv, | ||
763 | unsigned int *i) | ||
764 | { | ||
765 | *i = 0; | ||
766 | return 0; | ||
767 | } | ||
768 | |||
769 | static int zr364xx_vidioc_s_input(struct file *file, void *priv, | ||
770 | unsigned int i) | ||
771 | { | ||
772 | if (i != 0) | ||
773 | return -EINVAL; | ||
774 | return 0; | ||
775 | } | ||
776 | |||
777 | static int zr364xx_vidioc_queryctrl(struct file *file, void *priv, | ||
778 | struct v4l2_queryctrl *c) | ||
779 | { | ||
780 | struct zr364xx_camera *cam; | ||
781 | |||
782 | if (file == NULL) | ||
783 | return -ENODEV; | ||
784 | cam = video_drvdata(file); | ||
785 | |||
786 | switch (c->id) { | ||
787 | case V4L2_CID_BRIGHTNESS: | ||
788 | c->type = V4L2_CTRL_TYPE_INTEGER; | ||
789 | strcpy(c->name, "Brightness"); | ||
790 | c->minimum = 0; | ||
791 | c->maximum = 127; | ||
792 | c->step = 1; | ||
793 | c->default_value = cam->mode.brightness; | ||
794 | c->flags = 0; | ||
795 | break; | ||
796 | default: | ||
797 | return -EINVAL; | ||
798 | } | ||
799 | return 0; | ||
800 | } | ||
801 | |||
802 | static int zr364xx_vidioc_s_ctrl(struct file *file, void *priv, | ||
803 | struct v4l2_control *c) | ||
804 | { | ||
805 | struct zr364xx_camera *cam; | ||
806 | int temp; | ||
807 | |||
808 | if (file == NULL) | ||
809 | return -ENODEV; | ||
810 | cam = video_drvdata(file); | ||
811 | |||
812 | switch (c->id) { | ||
813 | case V4L2_CID_BRIGHTNESS: | ||
814 | cam->mode.brightness = c->value; | ||
815 | /* hardware brightness */ | ||
816 | mutex_lock(&cam->lock); | ||
817 | send_control_msg(cam->udev, 1, 0x2001, 0, NULL, 0); | ||
818 | temp = (0x60 << 8) + 127 - cam->mode.brightness; | ||
819 | send_control_msg(cam->udev, 1, temp, 0, NULL, 0); | ||
820 | mutex_unlock(&cam->lock); | ||
821 | break; | ||
822 | default: | ||
823 | return -EINVAL; | ||
824 | } | ||
825 | |||
826 | return 0; | ||
827 | } | ||
828 | |||
829 | static int zr364xx_vidioc_g_ctrl(struct file *file, void *priv, | ||
830 | struct v4l2_control *c) | ||
831 | { | ||
832 | struct zr364xx_camera *cam; | ||
833 | |||
834 | if (file == NULL) | ||
835 | return -ENODEV; | ||
836 | cam = video_drvdata(file); | ||
837 | |||
838 | switch (c->id) { | ||
839 | case V4L2_CID_BRIGHTNESS: | ||
840 | c->value = cam->mode.brightness; | ||
841 | break; | ||
842 | default: | ||
843 | return -EINVAL; | ||
844 | } | ||
845 | return 0; | ||
846 | } | ||
847 | |||
848 | static int zr364xx_vidioc_enum_fmt_vid_cap(struct file *file, | ||
849 | void *priv, struct v4l2_fmtdesc *f) | ||
850 | { | ||
851 | if (f->index > 0) | ||
852 | return -EINVAL; | ||
853 | f->flags = V4L2_FMT_FLAG_COMPRESSED; | ||
854 | strcpy(f->description, formats[0].name); | ||
855 | f->pixelformat = formats[0].fourcc; | ||
856 | return 0; | ||
857 | } | ||
858 | |||
859 | static char *decode_fourcc(__u32 pixelformat, char *buf) | ||
860 | { | ||
861 | buf[0] = pixelformat & 0xff; | ||
862 | buf[1] = (pixelformat >> 8) & 0xff; | ||
863 | buf[2] = (pixelformat >> 16) & 0xff; | ||
864 | buf[3] = (pixelformat >> 24) & 0xff; | ||
865 | buf[4] = '\0'; | ||
866 | return buf; | ||
867 | } | ||
868 | |||
869 | static int zr364xx_vidioc_try_fmt_vid_cap(struct file *file, void *priv, | ||
870 | struct v4l2_format *f) | ||
871 | { | ||
872 | struct zr364xx_camera *cam = video_drvdata(file); | ||
873 | char pixelformat_name[5]; | ||
874 | |||
875 | if (cam == NULL) | ||
876 | return -ENODEV; | ||
877 | |||
878 | if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_JPEG) { | ||
879 | DBG("%s: unsupported pixelformat V4L2_PIX_FMT_%s\n", __func__, | ||
880 | decode_fourcc(f->fmt.pix.pixelformat, pixelformat_name)); | ||
881 | return -EINVAL; | ||
882 | } | ||
883 | |||
884 | if (!(f->fmt.pix.width == 160 && f->fmt.pix.height == 120) && | ||
885 | !(f->fmt.pix.width == 640 && f->fmt.pix.height == 480)) { | ||
886 | f->fmt.pix.width = 320; | ||
887 | f->fmt.pix.height = 240; | ||
888 | } | ||
889 | |||
890 | f->fmt.pix.field = V4L2_FIELD_NONE; | ||
891 | f->fmt.pix.bytesperline = f->fmt.pix.width * 2; | ||
892 | f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; | ||
893 | f->fmt.pix.colorspace = 0; | ||
894 | f->fmt.pix.priv = 0; | ||
895 | DBG("%s: V4L2_PIX_FMT_%s (%d) ok!\n", __func__, | ||
896 | decode_fourcc(f->fmt.pix.pixelformat, pixelformat_name), | ||
897 | f->fmt.pix.field); | ||
898 | return 0; | ||
899 | } | ||
900 | |||
901 | static int zr364xx_vidioc_g_fmt_vid_cap(struct file *file, void *priv, | ||
902 | struct v4l2_format *f) | ||
903 | { | ||
904 | struct zr364xx_camera *cam; | ||
905 | |||
906 | if (file == NULL) | ||
907 | return -ENODEV; | ||
908 | cam = video_drvdata(file); | ||
909 | |||
910 | f->fmt.pix.pixelformat = formats[0].fourcc; | ||
911 | f->fmt.pix.field = V4L2_FIELD_NONE; | ||
912 | f->fmt.pix.width = cam->width; | ||
913 | f->fmt.pix.height = cam->height; | ||
914 | f->fmt.pix.bytesperline = f->fmt.pix.width * 2; | ||
915 | f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; | ||
916 | f->fmt.pix.colorspace = 0; | ||
917 | f->fmt.pix.priv = 0; | ||
918 | return 0; | ||
919 | } | ||
920 | |||
921 | static int zr364xx_vidioc_s_fmt_vid_cap(struct file *file, void *priv, | ||
922 | struct v4l2_format *f) | ||
923 | { | ||
924 | struct zr364xx_camera *cam = video_drvdata(file); | ||
925 | struct videobuf_queue *q = &cam->vb_vidq; | ||
926 | char pixelformat_name[5]; | ||
927 | int ret = zr364xx_vidioc_try_fmt_vid_cap(file, cam, f); | ||
928 | int i; | ||
929 | |||
930 | if (ret < 0) | ||
931 | return ret; | ||
932 | |||
933 | mutex_lock(&q->vb_lock); | ||
934 | |||
935 | if (videobuf_queue_is_busy(&cam->vb_vidq)) { | ||
936 | DBG("%s queue busy\n", __func__); | ||
937 | ret = -EBUSY; | ||
938 | goto out; | ||
939 | } | ||
940 | |||
941 | if (res_check(cam)) { | ||
942 | DBG("%s can't change format after started\n", __func__); | ||
943 | ret = -EBUSY; | ||
944 | goto out; | ||
945 | } | ||
946 | |||
947 | cam->width = f->fmt.pix.width; | ||
948 | cam->height = f->fmt.pix.height; | ||
949 | dev_info(&cam->udev->dev, "%s: %dx%d mode selected\n", __func__, | ||
950 | cam->width, cam->height); | ||
951 | f->fmt.pix.bytesperline = f->fmt.pix.width * 2; | ||
952 | f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; | ||
953 | f->fmt.pix.colorspace = 0; | ||
954 | f->fmt.pix.priv = 0; | ||
955 | cam->vb_vidq.field = f->fmt.pix.field; | ||
956 | cam->mode.color = V4L2_PIX_FMT_JPEG; | ||
957 | |||
958 | if (f->fmt.pix.width == 160 && f->fmt.pix.height == 120) | ||
959 | mode = 1; | ||
960 | else if (f->fmt.pix.width == 640 && f->fmt.pix.height == 480) | ||
961 | mode = 2; | ||
962 | else | ||
963 | mode = 0; | ||
964 | |||
965 | m0d1[0] = mode; | ||
966 | m1[2].value = 0xf000 + mode; | ||
967 | m2[1].value = 0xf000 + mode; | ||
968 | |||
969 | /* special case for METHOD3, the modes are different */ | ||
970 | if (cam->method == METHOD3) { | ||
971 | switch (mode) { | ||
972 | case 1: | ||
973 | m2[1].value = 0xf000 + 4; | ||
974 | break; | ||
975 | case 2: | ||
976 | m2[1].value = 0xf000 + 0; | ||
977 | break; | ||
978 | default: | ||
979 | m2[1].value = 0xf000 + 1; | ||
980 | break; | ||
981 | } | ||
982 | } | ||
983 | |||
984 | header2[437] = cam->height / 256; | ||
985 | header2[438] = cam->height % 256; | ||
986 | header2[439] = cam->width / 256; | ||
987 | header2[440] = cam->width % 256; | ||
988 | |||
989 | for (i = 0; init[cam->method][i].size != -1; i++) { | ||
990 | ret = | ||
991 | send_control_msg(cam->udev, 1, init[cam->method][i].value, | ||
992 | 0, init[cam->method][i].bytes, | ||
993 | init[cam->method][i].size); | ||
994 | if (ret < 0) { | ||
995 | dev_err(&cam->udev->dev, | ||
996 | "error during resolution change sequence: %d\n", i); | ||
997 | goto out; | ||
998 | } | ||
999 | } | ||
1000 | |||
1001 | /* Added some delay here, since opening/closing the camera quickly, | ||
1002 | * like Ekiga does during its startup, can crash the webcam | ||
1003 | */ | ||
1004 | mdelay(100); | ||
1005 | cam->skip = 2; | ||
1006 | ret = 0; | ||
1007 | |||
1008 | out: | ||
1009 | mutex_unlock(&q->vb_lock); | ||
1010 | |||
1011 | DBG("%s: V4L2_PIX_FMT_%s (%d) ok!\n", __func__, | ||
1012 | decode_fourcc(f->fmt.pix.pixelformat, pixelformat_name), | ||
1013 | f->fmt.pix.field); | ||
1014 | return ret; | ||
1015 | } | ||
1016 | |||
1017 | static int zr364xx_vidioc_reqbufs(struct file *file, void *priv, | ||
1018 | struct v4l2_requestbuffers *p) | ||
1019 | { | ||
1020 | int rc; | ||
1021 | struct zr364xx_camera *cam = video_drvdata(file); | ||
1022 | rc = videobuf_reqbufs(&cam->vb_vidq, p); | ||
1023 | return rc; | ||
1024 | } | ||
1025 | |||
1026 | static int zr364xx_vidioc_querybuf(struct file *file, | ||
1027 | void *priv, | ||
1028 | struct v4l2_buffer *p) | ||
1029 | { | ||
1030 | int rc; | ||
1031 | struct zr364xx_camera *cam = video_drvdata(file); | ||
1032 | rc = videobuf_querybuf(&cam->vb_vidq, p); | ||
1033 | return rc; | ||
1034 | } | ||
1035 | |||
1036 | static int zr364xx_vidioc_qbuf(struct file *file, | ||
1037 | void *priv, | ||
1038 | struct v4l2_buffer *p) | ||
1039 | { | ||
1040 | int rc; | ||
1041 | struct zr364xx_camera *cam = video_drvdata(file); | ||
1042 | _DBG("%s\n", __func__); | ||
1043 | rc = videobuf_qbuf(&cam->vb_vidq, p); | ||
1044 | return rc; | ||
1045 | } | ||
1046 | |||
1047 | static int zr364xx_vidioc_dqbuf(struct file *file, | ||
1048 | void *priv, | ||
1049 | struct v4l2_buffer *p) | ||
1050 | { | ||
1051 | int rc; | ||
1052 | struct zr364xx_camera *cam = video_drvdata(file); | ||
1053 | _DBG("%s\n", __func__); | ||
1054 | rc = videobuf_dqbuf(&cam->vb_vidq, p, file->f_flags & O_NONBLOCK); | ||
1055 | return rc; | ||
1056 | } | ||
1057 | |||
1058 | static void read_pipe_completion(struct urb *purb) | ||
1059 | { | ||
1060 | struct zr364xx_pipeinfo *pipe_info; | ||
1061 | struct zr364xx_camera *cam; | ||
1062 | int pipe; | ||
1063 | |||
1064 | pipe_info = purb->context; | ||
1065 | _DBG("%s %p, status %d\n", __func__, purb, purb->status); | ||
1066 | if (pipe_info == NULL) { | ||
1067 | printk(KERN_ERR KBUILD_MODNAME ": no context!\n"); | ||
1068 | return; | ||
1069 | } | ||
1070 | |||
1071 | cam = pipe_info->cam; | ||
1072 | if (cam == NULL) { | ||
1073 | printk(KERN_ERR KBUILD_MODNAME ": no context!\n"); | ||
1074 | return; | ||
1075 | } | ||
1076 | |||
1077 | /* if shutting down, do not resubmit, exit immediately */ | ||
1078 | if (purb->status == -ESHUTDOWN) { | ||
1079 | DBG("%s, err shutdown\n", __func__); | ||
1080 | pipe_info->err_count++; | ||
1081 | return; | ||
1082 | } | ||
1083 | |||
1084 | if (pipe_info->state == 0) { | ||
1085 | DBG("exiting USB pipe\n"); | ||
1086 | return; | ||
1087 | } | ||
1088 | |||
1089 | if (purb->actual_length < 0 || | ||
1090 | purb->actual_length > pipe_info->transfer_size) { | ||
1091 | dev_err(&cam->udev->dev, "wrong number of bytes\n"); | ||
1092 | return; | ||
1093 | } | ||
1094 | |||
1095 | if (purb->status == 0) | ||
1096 | zr364xx_read_video_callback(cam, pipe_info, purb); | ||
1097 | else { | ||
1098 | pipe_info->err_count++; | ||
1099 | DBG("%s: failed URB %d\n", __func__, purb->status); | ||
1100 | } | ||
1101 | |||
1102 | pipe = usb_rcvbulkpipe(cam->udev, cam->read_endpoint); | ||
1103 | |||
1104 | /* reuse urb */ | ||
1105 | usb_fill_bulk_urb(pipe_info->stream_urb, cam->udev, | ||
1106 | pipe, | ||
1107 | pipe_info->transfer_buffer, | ||
1108 | pipe_info->transfer_size, | ||
1109 | read_pipe_completion, pipe_info); | ||
1110 | |||
1111 | if (pipe_info->state != 0) { | ||
1112 | purb->status = usb_submit_urb(pipe_info->stream_urb, | ||
1113 | GFP_ATOMIC); | ||
1114 | |||
1115 | if (purb->status) | ||
1116 | dev_err(&cam->udev->dev, | ||
1117 | "error submitting urb (error=%i)\n", | ||
1118 | purb->status); | ||
1119 | } else | ||
1120 | DBG("read pipe complete state 0\n"); | ||
1121 | } | ||
1122 | |||
1123 | static int zr364xx_start_readpipe(struct zr364xx_camera *cam) | ||
1124 | { | ||
1125 | int pipe; | ||
1126 | int retval; | ||
1127 | struct zr364xx_pipeinfo *pipe_info = cam->pipe; | ||
1128 | pipe = usb_rcvbulkpipe(cam->udev, cam->read_endpoint); | ||
1129 | DBG("%s: start pipe IN x%x\n", __func__, cam->read_endpoint); | ||
1130 | |||
1131 | pipe_info->state = 1; | ||
1132 | pipe_info->err_count = 0; | ||
1133 | pipe_info->stream_urb = usb_alloc_urb(0, GFP_KERNEL); | ||
1134 | if (!pipe_info->stream_urb) { | ||
1135 | dev_err(&cam->udev->dev, "ReadStream: Unable to alloc URB\n"); | ||
1136 | return -ENOMEM; | ||
1137 | } | ||
1138 | /* transfer buffer allocated in board_init */ | ||
1139 | usb_fill_bulk_urb(pipe_info->stream_urb, cam->udev, | ||
1140 | pipe, | ||
1141 | pipe_info->transfer_buffer, | ||
1142 | pipe_info->transfer_size, | ||
1143 | read_pipe_completion, pipe_info); | ||
1144 | |||
1145 | DBG("submitting URB %p\n", pipe_info->stream_urb); | ||
1146 | retval = usb_submit_urb(pipe_info->stream_urb, GFP_KERNEL); | ||
1147 | if (retval) { | ||
1148 | printk(KERN_ERR KBUILD_MODNAME ": start read pipe failed\n"); | ||
1149 | return retval; | ||
1150 | } | ||
1151 | |||
1152 | return 0; | ||
1153 | } | ||
1154 | |||
1155 | static void zr364xx_stop_readpipe(struct zr364xx_camera *cam) | ||
1156 | { | ||
1157 | struct zr364xx_pipeinfo *pipe_info; | ||
1158 | |||
1159 | if (cam == NULL) { | ||
1160 | printk(KERN_ERR KBUILD_MODNAME ": invalid device\n"); | ||
1161 | return; | ||
1162 | } | ||
1163 | DBG("stop read pipe\n"); | ||
1164 | pipe_info = cam->pipe; | ||
1165 | if (pipe_info) { | ||
1166 | if (pipe_info->state != 0) | ||
1167 | pipe_info->state = 0; | ||
1168 | |||
1169 | if (pipe_info->stream_urb) { | ||
1170 | /* cancel urb */ | ||
1171 | usb_kill_urb(pipe_info->stream_urb); | ||
1172 | usb_free_urb(pipe_info->stream_urb); | ||
1173 | pipe_info->stream_urb = NULL; | ||
1174 | } | ||
1175 | } | ||
1176 | return; | ||
1177 | } | ||
1178 | |||
1179 | /* starts acquisition process */ | ||
1180 | static int zr364xx_start_acquire(struct zr364xx_camera *cam) | ||
1181 | { | ||
1182 | int j; | ||
1183 | |||
1184 | DBG("start acquire\n"); | ||
1185 | |||
1186 | cam->last_frame = -1; | ||
1187 | cam->cur_frame = 0; | ||
1188 | for (j = 0; j < FRAMES; j++) { | ||
1189 | cam->buffer.frame[j].ulState = ZR364XX_READ_IDLE; | ||
1190 | cam->buffer.frame[j].cur_size = 0; | ||
1191 | } | ||
1192 | cam->b_acquire = 1; | ||
1193 | return 0; | ||
1194 | } | ||
1195 | |||
1196 | static inline int zr364xx_stop_acquire(struct zr364xx_camera *cam) | ||
1197 | { | ||
1198 | cam->b_acquire = 0; | ||
1199 | return 0; | ||
1200 | } | ||
1201 | |||
1202 | static int zr364xx_vidioc_streamon(struct file *file, void *priv, | ||
1203 | enum v4l2_buf_type type) | ||
1204 | { | ||
1205 | struct zr364xx_camera *cam = video_drvdata(file); | ||
1206 | int j; | ||
1207 | int res; | ||
1208 | |||
1209 | DBG("%s\n", __func__); | ||
1210 | |||
1211 | if (cam->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { | ||
1212 | dev_err(&cam->udev->dev, "invalid fh type0\n"); | ||
1213 | return -EINVAL; | ||
1214 | } | ||
1215 | if (cam->type != type) { | ||
1216 | dev_err(&cam->udev->dev, "invalid fh type1\n"); | ||
1217 | return -EINVAL; | ||
1218 | } | ||
1219 | |||
1220 | if (!res_get(cam)) { | ||
1221 | dev_err(&cam->udev->dev, "stream busy\n"); | ||
1222 | return -EBUSY; | ||
1223 | } | ||
1224 | |||
1225 | cam->last_frame = -1; | ||
1226 | cam->cur_frame = 0; | ||
1227 | cam->frame_count = 0; | ||
1228 | for (j = 0; j < FRAMES; j++) { | ||
1229 | cam->buffer.frame[j].ulState = ZR364XX_READ_IDLE; | ||
1230 | cam->buffer.frame[j].cur_size = 0; | ||
1231 | } | ||
1232 | res = videobuf_streamon(&cam->vb_vidq); | ||
1233 | if (res == 0) { | ||
1234 | zr364xx_start_acquire(cam); | ||
1235 | } else { | ||
1236 | res_free(cam); | ||
1237 | } | ||
1238 | return res; | ||
1239 | } | ||
1240 | |||
1241 | static int zr364xx_vidioc_streamoff(struct file *file, void *priv, | ||
1242 | enum v4l2_buf_type type) | ||
1243 | { | ||
1244 | int res; | ||
1245 | struct zr364xx_camera *cam = video_drvdata(file); | ||
1246 | |||
1247 | DBG("%s\n", __func__); | ||
1248 | if (cam->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { | ||
1249 | dev_err(&cam->udev->dev, "invalid fh type0\n"); | ||
1250 | return -EINVAL; | ||
1251 | } | ||
1252 | if (cam->type != type) { | ||
1253 | dev_err(&cam->udev->dev, "invalid fh type1\n"); | ||
1254 | return -EINVAL; | ||
1255 | } | ||
1256 | zr364xx_stop_acquire(cam); | ||
1257 | res = videobuf_streamoff(&cam->vb_vidq); | ||
1258 | if (res < 0) | ||
1259 | return res; | ||
1260 | res_free(cam); | ||
1261 | return 0; | ||
1262 | } | ||
1263 | |||
1264 | |||
1265 | /* open the camera */ | ||
1266 | static int zr364xx_open(struct file *file) | ||
1267 | { | ||
1268 | struct video_device *vdev = video_devdata(file); | ||
1269 | struct zr364xx_camera *cam = video_drvdata(file); | ||
1270 | struct usb_device *udev = cam->udev; | ||
1271 | int i, err; | ||
1272 | |||
1273 | DBG("%s\n", __func__); | ||
1274 | |||
1275 | mutex_lock(&cam->open_lock); | ||
1276 | |||
1277 | if (cam->users) { | ||
1278 | err = -EBUSY; | ||
1279 | goto out; | ||
1280 | } | ||
1281 | |||
1282 | for (i = 0; init[cam->method][i].size != -1; i++) { | ||
1283 | err = | ||
1284 | send_control_msg(udev, 1, init[cam->method][i].value, | ||
1285 | 0, init[cam->method][i].bytes, | ||
1286 | init[cam->method][i].size); | ||
1287 | if (err < 0) { | ||
1288 | dev_err(&cam->udev->dev, | ||
1289 | "error during open sequence: %d\n", i); | ||
1290 | goto out; | ||
1291 | } | ||
1292 | } | ||
1293 | |||
1294 | cam->skip = 2; | ||
1295 | cam->users++; | ||
1296 | file->private_data = vdev; | ||
1297 | cam->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | ||
1298 | cam->fmt = formats; | ||
1299 | |||
1300 | videobuf_queue_vmalloc_init(&cam->vb_vidq, &zr364xx_video_qops, | ||
1301 | NULL, &cam->slock, | ||
1302 | cam->type, | ||
1303 | V4L2_FIELD_NONE, | ||
1304 | sizeof(struct zr364xx_buffer), cam, NULL); | ||
1305 | |||
1306 | /* Added some delay here, since opening/closing the camera quickly, | ||
1307 | * like Ekiga does during its startup, can crash the webcam | ||
1308 | */ | ||
1309 | mdelay(100); | ||
1310 | err = 0; | ||
1311 | |||
1312 | out: | ||
1313 | mutex_unlock(&cam->open_lock); | ||
1314 | DBG("%s: %d\n", __func__, err); | ||
1315 | return err; | ||
1316 | } | ||
1317 | |||
1318 | static void zr364xx_destroy(struct zr364xx_camera *cam) | ||
1319 | { | ||
1320 | unsigned long i; | ||
1321 | |||
1322 | if (!cam) { | ||
1323 | printk(KERN_ERR KBUILD_MODNAME ", %s: no device\n", __func__); | ||
1324 | return; | ||
1325 | } | ||
1326 | mutex_lock(&cam->open_lock); | ||
1327 | if (cam->vdev) | ||
1328 | video_unregister_device(cam->vdev); | ||
1329 | cam->vdev = NULL; | ||
1330 | |||
1331 | /* stops the read pipe if it is running */ | ||
1332 | if (cam->b_acquire) | ||
1333 | zr364xx_stop_acquire(cam); | ||
1334 | |||
1335 | zr364xx_stop_readpipe(cam); | ||
1336 | |||
1337 | /* release sys buffers */ | ||
1338 | for (i = 0; i < FRAMES; i++) { | ||
1339 | if (cam->buffer.frame[i].lpvbits) { | ||
1340 | DBG("vfree %p\n", cam->buffer.frame[i].lpvbits); | ||
1341 | vfree(cam->buffer.frame[i].lpvbits); | ||
1342 | } | ||
1343 | cam->buffer.frame[i].lpvbits = NULL; | ||
1344 | } | ||
1345 | |||
1346 | /* release transfer buffer */ | ||
1347 | kfree(cam->pipe->transfer_buffer); | ||
1348 | cam->pipe->transfer_buffer = NULL; | ||
1349 | mutex_unlock(&cam->open_lock); | ||
1350 | kfree(cam); | ||
1351 | cam = NULL; | ||
1352 | } | ||
1353 | |||
1354 | /* release the camera */ | ||
1355 | static int zr364xx_release(struct file *file) | ||
1356 | { | ||
1357 | struct zr364xx_camera *cam; | ||
1358 | struct usb_device *udev; | ||
1359 | int i, err; | ||
1360 | |||
1361 | DBG("%s\n", __func__); | ||
1362 | cam = video_drvdata(file); | ||
1363 | |||
1364 | if (!cam) | ||
1365 | return -ENODEV; | ||
1366 | |||
1367 | mutex_lock(&cam->open_lock); | ||
1368 | udev = cam->udev; | ||
1369 | |||
1370 | /* turn off stream */ | ||
1371 | if (res_check(cam)) { | ||
1372 | if (cam->b_acquire) | ||
1373 | zr364xx_stop_acquire(cam); | ||
1374 | videobuf_streamoff(&cam->vb_vidq); | ||
1375 | res_free(cam); | ||
1376 | } | ||
1377 | |||
1378 | cam->users--; | ||
1379 | file->private_data = NULL; | ||
1380 | |||
1381 | for (i = 0; i < 2; i++) { | ||
1382 | err = | ||
1383 | send_control_msg(udev, 1, init[cam->method][i].value, | ||
1384 | 0, init[cam->method][i].bytes, | ||
1385 | init[cam->method][i].size); | ||
1386 | if (err < 0) { | ||
1387 | dev_err(&udev->dev, "error during release sequence\n"); | ||
1388 | goto out; | ||
1389 | } | ||
1390 | } | ||
1391 | |||
1392 | /* Added some delay here, since opening/closing the camera quickly, | ||
1393 | * like Ekiga does during its startup, can crash the webcam | ||
1394 | */ | ||
1395 | mdelay(100); | ||
1396 | err = 0; | ||
1397 | |||
1398 | out: | ||
1399 | mutex_unlock(&cam->open_lock); | ||
1400 | |||
1401 | return err; | ||
1402 | } | ||
1403 | |||
1404 | |||
1405 | static int zr364xx_mmap(struct file *file, struct vm_area_struct *vma) | ||
1406 | { | ||
1407 | struct zr364xx_camera *cam = video_drvdata(file); | ||
1408 | int ret; | ||
1409 | |||
1410 | if (cam == NULL) { | ||
1411 | DBG("%s: cam == NULL\n", __func__); | ||
1412 | return -ENODEV; | ||
1413 | } | ||
1414 | DBG("mmap called, vma=0x%08lx\n", (unsigned long)vma); | ||
1415 | |||
1416 | ret = videobuf_mmap_mapper(&cam->vb_vidq, vma); | ||
1417 | |||
1418 | DBG("vma start=0x%08lx, size=%ld, ret=%d\n", | ||
1419 | (unsigned long)vma->vm_start, | ||
1420 | (unsigned long)vma->vm_end - (unsigned long)vma->vm_start, ret); | ||
1421 | return ret; | ||
1422 | } | ||
1423 | |||
1424 | static unsigned int zr364xx_poll(struct file *file, | ||
1425 | struct poll_table_struct *wait) | ||
1426 | { | ||
1427 | struct zr364xx_camera *cam = video_drvdata(file); | ||
1428 | struct videobuf_queue *q = &cam->vb_vidq; | ||
1429 | _DBG("%s\n", __func__); | ||
1430 | |||
1431 | if (cam->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | ||
1432 | return POLLERR; | ||
1433 | |||
1434 | return videobuf_poll_stream(file, q, wait); | ||
1435 | } | ||
1436 | |||
1437 | static const struct v4l2_file_operations zr364xx_fops = { | ||
1438 | .owner = THIS_MODULE, | ||
1439 | .open = zr364xx_open, | ||
1440 | .release = zr364xx_release, | ||
1441 | .read = zr364xx_read, | ||
1442 | .mmap = zr364xx_mmap, | ||
1443 | .ioctl = video_ioctl2, | ||
1444 | .poll = zr364xx_poll, | ||
1445 | }; | ||
1446 | |||
1447 | static const struct v4l2_ioctl_ops zr364xx_ioctl_ops = { | ||
1448 | .vidioc_querycap = zr364xx_vidioc_querycap, | ||
1449 | .vidioc_enum_fmt_vid_cap = zr364xx_vidioc_enum_fmt_vid_cap, | ||
1450 | .vidioc_try_fmt_vid_cap = zr364xx_vidioc_try_fmt_vid_cap, | ||
1451 | .vidioc_s_fmt_vid_cap = zr364xx_vidioc_s_fmt_vid_cap, | ||
1452 | .vidioc_g_fmt_vid_cap = zr364xx_vidioc_g_fmt_vid_cap, | ||
1453 | .vidioc_enum_input = zr364xx_vidioc_enum_input, | ||
1454 | .vidioc_g_input = zr364xx_vidioc_g_input, | ||
1455 | .vidioc_s_input = zr364xx_vidioc_s_input, | ||
1456 | .vidioc_streamon = zr364xx_vidioc_streamon, | ||
1457 | .vidioc_streamoff = zr364xx_vidioc_streamoff, | ||
1458 | .vidioc_queryctrl = zr364xx_vidioc_queryctrl, | ||
1459 | .vidioc_g_ctrl = zr364xx_vidioc_g_ctrl, | ||
1460 | .vidioc_s_ctrl = zr364xx_vidioc_s_ctrl, | ||
1461 | .vidioc_reqbufs = zr364xx_vidioc_reqbufs, | ||
1462 | .vidioc_querybuf = zr364xx_vidioc_querybuf, | ||
1463 | .vidioc_qbuf = zr364xx_vidioc_qbuf, | ||
1464 | .vidioc_dqbuf = zr364xx_vidioc_dqbuf, | ||
1465 | }; | ||
1466 | |||
1467 | static struct video_device zr364xx_template = { | ||
1468 | .name = DRIVER_DESC, | ||
1469 | .fops = &zr364xx_fops, | ||
1470 | .ioctl_ops = &zr364xx_ioctl_ops, | ||
1471 | .release = video_device_release, | ||
1472 | }; | ||
1473 | |||
1474 | |||
1475 | |||
1476 | /*******************/ | ||
1477 | /* USB integration */ | ||
1478 | /*******************/ | ||
1479 | static int zr364xx_board_init(struct zr364xx_camera *cam) | ||
1480 | { | ||
1481 | struct zr364xx_pipeinfo *pipe = cam->pipe; | ||
1482 | unsigned long i; | ||
1483 | |||
1484 | DBG("board init: %p\n", cam); | ||
1485 | memset(pipe, 0, sizeof(*pipe)); | ||
1486 | pipe->cam = cam; | ||
1487 | pipe->transfer_size = BUFFER_SIZE; | ||
1488 | |||
1489 | pipe->transfer_buffer = kzalloc(pipe->transfer_size, | ||
1490 | GFP_KERNEL); | ||
1491 | if (pipe->transfer_buffer == NULL) { | ||
1492 | DBG("out of memory!\n"); | ||
1493 | return -ENOMEM; | ||
1494 | } | ||
1495 | |||
1496 | cam->b_acquire = 0; | ||
1497 | cam->frame_count = 0; | ||
1498 | |||
1499 | /*** start create system buffers ***/ | ||
1500 | for (i = 0; i < FRAMES; i++) { | ||
1501 | /* always allocate maximum size for system buffers */ | ||
1502 | cam->buffer.frame[i].lpvbits = vmalloc(MAX_FRAME_SIZE); | ||
1503 | |||
1504 | DBG("valloc %p, idx %lu, pdata %p\n", | ||
1505 | &cam->buffer.frame[i], i, | ||
1506 | cam->buffer.frame[i].lpvbits); | ||
1507 | if (cam->buffer.frame[i].lpvbits == NULL) { | ||
1508 | printk(KERN_INFO KBUILD_MODNAME ": out of memory. " | ||
1509 | "Using less frames\n"); | ||
1510 | break; | ||
1511 | } | ||
1512 | } | ||
1513 | |||
1514 | if (i == 0) { | ||
1515 | printk(KERN_INFO KBUILD_MODNAME ": out of memory. Aborting\n"); | ||
1516 | kfree(cam->pipe->transfer_buffer); | ||
1517 | cam->pipe->transfer_buffer = NULL; | ||
1518 | return -ENOMEM; | ||
1519 | } else | ||
1520 | cam->buffer.dwFrames = i; | ||
1521 | |||
1522 | /* make sure internal states are set */ | ||
1523 | for (i = 0; i < FRAMES; i++) { | ||
1524 | cam->buffer.frame[i].ulState = ZR364XX_READ_IDLE; | ||
1525 | cam->buffer.frame[i].cur_size = 0; | ||
1526 | } | ||
1527 | |||
1528 | cam->cur_frame = 0; | ||
1529 | cam->last_frame = -1; | ||
1530 | /*** end create system buffers ***/ | ||
1531 | |||
1532 | /* start read pipe */ | ||
1533 | zr364xx_start_readpipe(cam); | ||
1534 | DBG(": board initialized\n"); | ||
1535 | return 0; | ||
1536 | } | ||
1537 | |||
1538 | static int zr364xx_probe(struct usb_interface *intf, | ||
1539 | const struct usb_device_id *id) | ||
1540 | { | ||
1541 | struct usb_device *udev = interface_to_usbdev(intf); | ||
1542 | struct zr364xx_camera *cam = NULL; | ||
1543 | struct usb_host_interface *iface_desc; | ||
1544 | struct usb_endpoint_descriptor *endpoint; | ||
1545 | int err; | ||
1546 | int i; | ||
1547 | |||
1548 | DBG("probing...\n"); | ||
1549 | |||
1550 | dev_info(&intf->dev, DRIVER_DESC " compatible webcam plugged\n"); | ||
1551 | dev_info(&intf->dev, "model %04x:%04x detected\n", | ||
1552 | le16_to_cpu(udev->descriptor.idVendor), | ||
1553 | le16_to_cpu(udev->descriptor.idProduct)); | ||
1554 | |||
1555 | cam = kzalloc(sizeof(struct zr364xx_camera), GFP_KERNEL); | ||
1556 | if (cam == NULL) { | ||
1557 | dev_err(&udev->dev, "cam: out of memory !\n"); | ||
1558 | return -ENOMEM; | ||
1559 | } | ||
1560 | /* save the init method used by this camera */ | ||
1561 | cam->method = id->driver_info; | ||
1562 | |||
1563 | cam->vdev = video_device_alloc(); | ||
1564 | if (cam->vdev == NULL) { | ||
1565 | dev_err(&udev->dev, "cam->vdev: out of memory !\n"); | ||
1566 | kfree(cam); | ||
1567 | cam = NULL; | ||
1568 | return -ENOMEM; | ||
1569 | } | ||
1570 | memcpy(cam->vdev, &zr364xx_template, sizeof(zr364xx_template)); | ||
1571 | cam->vdev->parent = &intf->dev; | ||
1572 | video_set_drvdata(cam->vdev, cam); | ||
1573 | if (debug) | ||
1574 | cam->vdev->debug = V4L2_DEBUG_IOCTL | V4L2_DEBUG_IOCTL_ARG; | ||
1575 | |||
1576 | cam->udev = udev; | ||
1577 | |||
1578 | switch (mode) { | ||
1579 | case 1: | ||
1580 | dev_info(&udev->dev, "160x120 mode selected\n"); | ||
1581 | cam->width = 160; | ||
1582 | cam->height = 120; | ||
1583 | break; | ||
1584 | case 2: | ||
1585 | dev_info(&udev->dev, "640x480 mode selected\n"); | ||
1586 | cam->width = 640; | ||
1587 | cam->height = 480; | ||
1588 | break; | ||
1589 | default: | ||
1590 | dev_info(&udev->dev, "320x240 mode selected\n"); | ||
1591 | cam->width = 320; | ||
1592 | cam->height = 240; | ||
1593 | break; | ||
1594 | } | ||
1595 | |||
1596 | m0d1[0] = mode; | ||
1597 | m1[2].value = 0xf000 + mode; | ||
1598 | m2[1].value = 0xf000 + mode; | ||
1599 | |||
1600 | /* special case for METHOD3, the modes are different */ | ||
1601 | if (cam->method == METHOD3) { | ||
1602 | switch (mode) { | ||
1603 | case 1: | ||
1604 | m2[1].value = 0xf000 + 4; | ||
1605 | break; | ||
1606 | case 2: | ||
1607 | m2[1].value = 0xf000 + 0; | ||
1608 | break; | ||
1609 | default: | ||
1610 | m2[1].value = 0xf000 + 1; | ||
1611 | break; | ||
1612 | } | ||
1613 | } | ||
1614 | |||
1615 | header2[437] = cam->height / 256; | ||
1616 | header2[438] = cam->height % 256; | ||
1617 | header2[439] = cam->width / 256; | ||
1618 | header2[440] = cam->width % 256; | ||
1619 | |||
1620 | cam->users = 0; | ||
1621 | cam->nb = 0; | ||
1622 | cam->mode.brightness = 64; | ||
1623 | mutex_init(&cam->lock); | ||
1624 | mutex_init(&cam->open_lock); | ||
1625 | |||
1626 | DBG("dev: %p, udev %p interface %p\n", cam, cam->udev, intf); | ||
1627 | |||
1628 | /* set up the endpoint information */ | ||
1629 | iface_desc = intf->cur_altsetting; | ||
1630 | DBG("num endpoints %d\n", iface_desc->desc.bNumEndpoints); | ||
1631 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { | ||
1632 | endpoint = &iface_desc->endpoint[i].desc; | ||
1633 | if (!cam->read_endpoint && usb_endpoint_is_bulk_in(endpoint)) { | ||
1634 | /* we found the bulk in endpoint */ | ||
1635 | cam->read_endpoint = endpoint->bEndpointAddress; | ||
1636 | } | ||
1637 | } | ||
1638 | |||
1639 | if (!cam->read_endpoint) { | ||
1640 | dev_err(&intf->dev, "Could not find bulk-in endpoint\n"); | ||
1641 | return -ENOMEM; | ||
1642 | } | ||
1643 | |||
1644 | /* v4l */ | ||
1645 | INIT_LIST_HEAD(&cam->vidq.active); | ||
1646 | cam->vidq.cam = cam; | ||
1647 | err = video_register_device(cam->vdev, VFL_TYPE_GRABBER, -1); | ||
1648 | if (err) { | ||
1649 | dev_err(&udev->dev, "video_register_device failed\n"); | ||
1650 | video_device_release(cam->vdev); | ||
1651 | kfree(cam); | ||
1652 | cam = NULL; | ||
1653 | return err; | ||
1654 | } | ||
1655 | |||
1656 | usb_set_intfdata(intf, cam); | ||
1657 | |||
1658 | /* load zr364xx board specific */ | ||
1659 | err = zr364xx_board_init(cam); | ||
1660 | if (err) { | ||
1661 | spin_lock_init(&cam->slock); | ||
1662 | return err; | ||
1663 | } | ||
1664 | |||
1665 | spin_lock_init(&cam->slock); | ||
1666 | |||
1667 | dev_info(&udev->dev, DRIVER_DESC " controlling device %s\n", | ||
1668 | video_device_node_name(cam->vdev)); | ||
1669 | return 0; | ||
1670 | } | ||
1671 | |||
1672 | |||
1673 | static void zr364xx_disconnect(struct usb_interface *intf) | ||
1674 | { | ||
1675 | struct zr364xx_camera *cam = usb_get_intfdata(intf); | ||
1676 | videobuf_mmap_free(&cam->vb_vidq); | ||
1677 | usb_set_intfdata(intf, NULL); | ||
1678 | dev_info(&intf->dev, DRIVER_DESC " webcam unplugged\n"); | ||
1679 | zr364xx_destroy(cam); | ||
1680 | } | ||
1681 | |||
1682 | |||
1683 | |||
1684 | /**********************/ | ||
1685 | /* Module integration */ | ||
1686 | /**********************/ | ||
1687 | |||
1688 | static struct usb_driver zr364xx_driver = { | ||
1689 | .name = "zr364xx", | ||
1690 | .probe = zr364xx_probe, | ||
1691 | .disconnect = zr364xx_disconnect, | ||
1692 | .id_table = device_table | ||
1693 | }; | ||
1694 | |||
1695 | |||
1696 | static int __init zr364xx_init(void) | ||
1697 | { | ||
1698 | int retval; | ||
1699 | retval = usb_register(&zr364xx_driver); | ||
1700 | if (retval) | ||
1701 | printk(KERN_ERR KBUILD_MODNAME ": usb_register failed!\n"); | ||
1702 | else | ||
1703 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n"); | ||
1704 | return retval; | ||
1705 | } | ||
1706 | |||
1707 | |||
1708 | static void __exit zr364xx_exit(void) | ||
1709 | { | ||
1710 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC " module unloaded\n"); | ||
1711 | usb_deregister(&zr364xx_driver); | ||
1712 | } | ||
1713 | |||
1714 | |||
1715 | module_init(zr364xx_init); | ||
1716 | module_exit(zr364xx_exit); | ||
1717 | |||
1718 | MODULE_AUTHOR(DRIVER_AUTHOR); | ||
1719 | MODULE_DESCRIPTION(DRIVER_DESC); | ||
1720 | MODULE_LICENSE("GPL"); | ||
1721 | MODULE_VERSION(DRIVER_VERSION); | ||