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[mirror_ubuntu-bionic-kernel.git] / drivers / media / video / zr364xx.c
CommitLineData
b7eee616 1/*
ccbf035a 2 * Zoran 364xx based USB webcam module version 0.73
b7eee616
AJ		 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 *
ccbf035a
LVS		 13 * Some video buffer code by Lamarque based on s2255drv.c and vivi.c drivers.
14 *
b7eee616
AJ		 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
b7eee616
AJ		 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>
2575f84a 37#include <linux/highmem.h>
b7eee616 38#include <media/v4l2-common.h>
35ea11ff 39#include <media/v4l2-ioctl.h>
ccbf035a 40#include <media/videobuf-vmalloc.h>
b7eee616
AJ		 41
42
43/* Version Information */
1990d50b 44#define DRIVER_VERSION "0.7.4"
b7eee616
AJ		 45#define DRIVER_AUTHOR "Antoine Jacquet, http://royale.zerezo.com/"
46#define DRIVER_DESC "Zoran 364xx"
47
48
49/* Camera */
ccbf035a 50#define FRAMES 1
8c5f32ac 51#define MAX_FRAME_SIZE 200000
b7eee616
AJ		 52#define BUFFER_SIZE 0x1000
53#define CTRL_TIMEOUT 500
54
ccbf035a
LVS		 55#define ZR364XX_DEF_BUFS 4
56#define ZR364XX_READ_IDLE 0
57#define ZR364XX_READ_FRAME 1
b7eee616
AJ		 58
59/* Debug macro */
ccbf035a
LVS		 60#define DBG(fmt, args...) \
61 do { \
62 if (debug) { \
63 printk(KERN_INFO KBUILD_MODNAME " " fmt, ##args); \
64 } \
65 } while (0)
b7eee616 66
76594c53
LVS		 67/*#define FULL_DEBUG 1*/
68#ifdef FULL_DEBUG
69#define _DBG DBG
70#else
71#define _DBG(fmt, args...)
72#endif
73
b7eee616
AJ		 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
08135ba2 79#define METHOD3 3
b7eee616
AJ		 80
81
82/* Module parameters */
ff699e6b
DSL		 83static int debug;
84static int mode;
b7eee616
AJ		 85
86
87/* Module parameters interface */
88module_param(debug, int, 0644);
89MODULE_PARM_DESC(debug, "Debug level");
90module_param(mode, int, 0644);
91MODULE_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 */
96static 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 },
bebeaea0 113 {USB_DEVICE(0x06d6, 0x003b), .driver_info = METHOD0 },
71c04475 114 {USB_DEVICE(0x0a17, 0x004e), .driver_info = METHOD2 },
c0e0aff9 115 {USB_DEVICE(0x041e, 0x405d), .driver_info = METHOD2 },
08135ba2 116 {USB_DEVICE(0x08ca, 0x2102), .driver_info = METHOD3 },
9018f6c3 117 {USB_DEVICE(0x06d6, 0x003d), .driver_info = METHOD0 },
b7eee616
AJ		 118 {} /* Terminating entry */
119};
120
121MODULE_DEVICE_TABLE(usb, device_table);
122
ccbf035a
LVS		 123struct zr364xx_mode {
124 u32 color; /* output video color format */
125 u32 brightness; /* brightness */
126};
127
128/* frame structure */
129struct 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 */
137struct zr364xx_bufferi {
138 unsigned long dwFrames; /* number of frames in buffer */
139 struct zr364xx_framei frame[FRAMES]; /* array of FRAME structures */
140};
141
142struct zr364xx_dmaqueue {
143 struct list_head active;
144 struct zr364xx_camera *cam;
145};
146
147struct 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
157struct zr364xx_fmt {
158 char *name;
159 u32 fourcc;
160 int depth;
161};
162
163/* image formats. */
164static const struct zr364xx_fmt formats[] = {
165 {
166 .name = "JPG",
167 .fourcc = V4L2_PIX_FMT_JPEG,
168 .depth = 24
169 }
170};
b7eee616
AJ		 171
172/* Camera stuff */
173struct 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 */
b7eee616 177 int nb;
ccbf035a 178 struct zr364xx_bufferi buffer;
b7eee616 179 int skip;
b7eee616
AJ		 180 int width;
181 int height;
182 int method;
183 struct mutex lock;
ccbf035a 184 struct mutex open_lock;
33d27a45 185 int users;
ccbf035a
LVS		 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;
b7eee616
AJ		 202};
203
ccbf035a
LVS		 204/* buffer for one video frame */
205struct zr364xx_buffer {
206 /* common v4l buffer stuff -- must be first */
207 struct videobuf_buffer vb;
208 const struct zr364xx_fmt *fmt;
209};
b7eee616
AJ		 210
211/* function used to send initialisation commands to the camera */
212static 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) {
a482f327 219 dev_err(&udev->dev, "kmalloc(%d) failed\n", size);
b7eee616
AJ		 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)
a482f327
GKH		 235 dev_err(&udev->dev,
236 "Failed sending control message, error %d.\n", status);
b7eee616
AJ		 237
238 return status;
239}
240
241
242/* Control messages sent to the camera to initialize it
243 * and launch the capture */
244typedef struct {
245 unsigned int value;
246 unsigned int size;
247 unsigned char *bytes;
248} message;
249
250/* method 0 */
251static unsigned char m0d1[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
252static unsigned char m0d2[] = { 0, 0, 0, 0, 0, 0 };
253static unsigned char m0d3[] = { 0, 0 };
254static 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 */
270static unsigned char m1d1[] = { 0xff, 0xff };
271static unsigned char m1d2[] = { 0x00, 0x00 };
272static 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 */
290static unsigned char m2d1[] = { 0xff, 0xff };
291static 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 */
08135ba2 304static message *init[4] = { m0, m1, m2, m2 };
b7eee616
AJ		 305
306
307/* JPEG static data in header (Huffman table, etc) */
308static 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};
316static 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};
361static unsigned char header3;
362
ccbf035a
LVS		 363/* ------------------------------------------------------------------
364 Videobuf operations
365 ------------------------------------------------------------------*/
b7eee616 366
ccbf035a
LVS		 367static int buffer_setup(struct videobuf_queue *vq, unsigned int *count,
368 unsigned int *size)
369{
370 struct zr364xx_camera *cam = vq->priv_data;
b7eee616 371
ccbf035a 372 *size = cam->width * cam->height * (cam->fmt->depth >> 3);
b7eee616 373
ccbf035a
LVS		 374 if (*count == 0)
375 *count = ZR364XX_DEF_BUFS;
b7eee616 376
dab7e310
AB		 377 if (*size * *count > ZR364XX_DEF_BUFS * 1024 * 1024)
378 *count = (ZR364XX_DEF_BUFS * 1024 * 1024) / *size;
b7eee616 379
ccbf035a
LVS		 380 return 0;
381}
b7eee616 382
ccbf035a
LVS		 383static void free_buffer(struct videobuf_queue *vq, struct zr364xx_buffer *buf)
384{
76594c53 385 _DBG("%s\n", __func__);
b7eee616 386
ccbf035a
LVS		 387 if (in_interrupt())
388 BUG();
b7eee616 389
ccbf035a
LVS		 390 videobuf_vmalloc_free(&buf->vb);
391 buf->vb.state = VIDEOBUF_NEEDS_INIT;
392}
393
394static 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;
b7eee616 412 }
ccbf035a
LVS		 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;
b7eee616
AJ		 423 }
424
ccbf035a
LVS		 425 buf->vb.state = VIDEOBUF_PREPARED;
426 return 0;
427fail:
428 free_buffer(vq, buf);
429 return rc;
430}
431
432static 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
76594c53 438 _DBG("%s\n", __func__);
b7eee616 439
ccbf035a
LVS		 440 buf->vb.state = VIDEOBUF_QUEUED;
441 list_add_tail(&buf->vb.queue, &cam->vidq.active);
b7eee616
AJ		 442}
443
ccbf035a
LVS		 444static 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
76594c53 450 _DBG("%s\n", __func__);
ccbf035a
LVS		 451 free_buffer(vq, buf);
452}
453
454static 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/********************/
464static int zr364xx_vidioc_streamon(struct file *file, void *priv,
465 enum v4l2_buf_type type);
b7eee616 466
ccbf035a 467static ssize_t zr364xx_read(struct file *file, char __user *buf, size_t count,
b7eee616
AJ		 468 loff_t * ppos)
469{
ccbf035a 470 struct zr364xx_camera *cam = video_drvdata(file);
b7eee616 471
76594c53 472 _DBG("%s\n", __func__);
b7eee616
AJ		 473
474 if (!buf)
475 return -EINVAL;
476
477 if (!count)
478 return -EINVAL;
479
ccbf035a
LVS		 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 */
501static 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
542static 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);
571unlock:
572 spin_unlock_irqrestore(&cam->slock, flags);
3053814c 573 return rc;
ccbf035a
LVS		 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 */
581static 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
76594c53 592 _DBG("buffer to user\n");
ccbf035a
LVS		 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
ccbf035a
LVS		 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
76594c53 617 _DBG("jpeg header, ");
ccbf035a
LVS		 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;
76594c53 635 _DBG("header : %d %d %d %d %d %d %d %d %d\n",
ccbf035a
LVS		 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 {
76594c53
LVS		 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 }
ccbf035a 651 }
76594c53 652 /*_DBG("cur_size %lu urb size %d\n", frm->cur_size,
ccbf035a
LVS		 653 purb->actual_length);*/
654
655 if (purb->actual_length < pipe_info->transfer_size) {
76594c53 656 _DBG("****************Buffer[%d]full*************\n", idx);
ccbf035a
LVS		 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 {
76594c53 691 _DBG("jpeg(%lu): %d %d %d %d %d %d %d %d\n",
ccbf035a
LVS		 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
707static 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;
76594c53 718 _DBG("res: get\n");
ccbf035a
LVS		 719 mutex_unlock(&cam->lock);
720 return 1;
721}
b7eee616 722
ccbf035a
LVS		 723static inline int res_check(struct zr364xx_camera *cam)
724{
725 return cam->resources;
b7eee616
AJ		 726}
727
ccbf035a
LVS		 728static void res_free(struct zr364xx_camera *cam)
729{
730 mutex_lock(&cam->lock);
731 cam->resources = 0;
732 mutex_unlock(&cam->lock);
76594c53 733 _DBG("res: put\n");
ccbf035a 734}
b7eee616
AJ		 735
736static int zr364xx_vidioc_querycap(struct file *file, void *priv,
737 struct v4l2_capability *cap)
738{
ccbf035a
LVS		 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));
ccbf035a
LVS		 745 cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |
746 V4L2_CAP_READWRITE |
747 V4L2_CAP_STREAMING;
748
b7eee616
AJ		 749 return 0;
750}
751
752static int zr364xx_vidioc_enum_input(struct file *file, void *priv,
753 struct v4l2_input *i)
754{
755 if (i->index != 0)
756 return -EINVAL;
b7eee616
AJ		 757 strcpy(i->name, DRIVER_DESC " Camera");
758 i->type = V4L2_INPUT_TYPE_CAMERA;
759 return 0;
760}
761
762static int zr364xx_vidioc_g_input(struct file *file, void *priv,
763 unsigned int *i)
764{
765 *i = 0;
766 return 0;
767}
768
769static 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
777static int zr364xx_vidioc_queryctrl(struct file *file, void *priv,
778 struct v4l2_queryctrl *c)
779{
b7eee616
AJ		 780 struct zr364xx_camera *cam;
781
ccbf035a 782 if (file == NULL)
b7eee616 783 return -ENODEV;
ccbf035a 784 cam = video_drvdata(file);
b7eee616
AJ		 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;
ccbf035a 793 c->default_value = cam->mode.brightness;
b7eee616
AJ		 794 c->flags = 0;
795 break;
796 default:
797 return -EINVAL;
798 }
799 return 0;
800}
801
802static int zr364xx_vidioc_s_ctrl(struct file *file, void *priv,
803 struct v4l2_control *c)
804{
b7eee616 805 struct zr364xx_camera *cam;
ccbf035a 806 int temp;
b7eee616 807
ccbf035a 808 if (file == NULL)
b7eee616 809 return -ENODEV;
ccbf035a 810 cam = video_drvdata(file);
b7eee616
AJ		 811
812 switch (c->id) {
813 case V4L2_CID_BRIGHTNESS:
ccbf035a
LVS		 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);
b7eee616
AJ		 821 break;
822 default:
823 return -EINVAL;
824 }
ccbf035a 825
b7eee616
AJ		 826 return 0;
827}
828
829static int zr364xx_vidioc_g_ctrl(struct file *file, void *priv,
830 struct v4l2_control *c)
831{
b7eee616
AJ		 832 struct zr364xx_camera *cam;
833
ccbf035a 834 if (file == NULL)
b7eee616 835 return -ENODEV;
ccbf035a 836 cam = video_drvdata(file);
b7eee616
AJ		 837
838 switch (c->id) {
839 case V4L2_CID_BRIGHTNESS:
ccbf035a 840 c->value = cam->mode.brightness;
b7eee616
AJ		 841 break;
842 default:
843 return -EINVAL;
844 }
845 return 0;
846}
847
78b526a4 848static int zr364xx_vidioc_enum_fmt_vid_cap(struct file *file,
b7eee616
AJ		 849 void *priv, struct v4l2_fmtdesc *f)
850{
851 if (f->index > 0)
852 return -EINVAL;
b7eee616 853 f->flags = V4L2_FMT_FLAG_COMPRESSED;
ccbf035a
LVS		 854 strcpy(f->description, formats[0].name);
855 f->pixelformat = formats[0].fourcc;
b7eee616
AJ		 856 return 0;
857}
858
ccbf035a
LVS		 859static 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
78b526a4 869static int zr364xx_vidioc_try_fmt_vid_cap(struct file *file, void *priv,
b7eee616
AJ		 870 struct v4l2_format *f)
871{
ccbf035a
LVS		 872 struct zr364xx_camera *cam = video_drvdata(file);
873 char pixelformat_name[5];
b7eee616 874
ccbf035a 875 if (cam == NULL)
b7eee616 876 return -ENODEV;
b7eee616 877
ccbf035a
LVS		 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));
b7eee616 881 return -EINVAL;
ccbf035a
LVS		 882 }
883
8c5f32ac
LVS		 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
b7eee616 890 f->fmt.pix.field = V4L2_FIELD_NONE;
b7eee616
AJ		 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;
ccbf035a
LVS		 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);
b7eee616
AJ		 898 return 0;
899}
900
78b526a4 901static int zr364xx_vidioc_g_fmt_vid_cap(struct file *file, void *priv,
b7eee616
AJ		 902 struct v4l2_format *f)
903{
b7eee616
AJ		 904 struct zr364xx_camera *cam;
905
ccbf035a 906 if (file == NULL)
b7eee616 907 return -ENODEV;
ccbf035a 908 cam = video_drvdata(file);
b7eee616 909
ccbf035a 910 f->fmt.pix.pixelformat = formats[0].fourcc;
b7eee616
AJ		 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
78b526a4 921static int zr364xx_vidioc_s_fmt_vid_cap(struct file *file, void *priv,
b7eee616
AJ		 922 struct v4l2_format *f)
923{
ccbf035a
LVS		 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);
8c5f32ac 928 int i;
b7eee616 929
ccbf035a
LVS		 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 }
b7eee616 940
8c5f32ac
LVS		 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);
b7eee616
AJ		 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;
ccbf035a
LVS		 955 cam->vb_vidq.field = f->fmt.pix.field;
956 cam->mode.color = V4L2_PIX_FMT_JPEG;
8c5f32ac
LVS		 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;
08135ba2
AJ		 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
8c5f32ac
LVS		 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;
ccbf035a
LVS		 1006 ret = 0;
1007
1008out:
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
1017static 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
1026static 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
1036static 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);
76594c53 1042 _DBG("%s\n", __func__);
ccbf035a
LVS		 1043 rc = videobuf_qbuf(&cam->vb_vidq, p);
1044 return rc;
1045}
1046
1047static 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);
76594c53 1053 _DBG("%s\n", __func__);
ccbf035a
LVS		 1054 rc = videobuf_dqbuf(&cam->vb_vidq, p, file->f_flags & O_NONBLOCK);
1055 return rc;
1056}
1057
1058static 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;
76594c53 1065 _DBG("%s %p, status %d\n", __func__, purb, purb->status);
ccbf035a
LVS		 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
1123static 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
1155static 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 }
ccbf035a
LVS		 1176 return;
1177}
1178
1179/* starts acquisition process */
1180static 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 }
8c5f32ac 1192 cam->b_acquire = 1;
ccbf035a
LVS		 1193 return 0;
1194}
1195
1196static inline int zr364xx_stop_acquire(struct zr364xx_camera *cam)
1197{
1198 cam->b_acquire = 0;
b7eee616
AJ		 1199 return 0;
1200}
1201
1202static int zr364xx_vidioc_streamon(struct file *file, void *priv,
1203 enum v4l2_buf_type type)
1204{
ccbf035a
LVS		 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);
ccbf035a
LVS		 1235 } else {
1236 res_free(cam);
1237 }
ccbf035a 1238 return res;
b7eee616
AJ		 1239}
1240
1241static int zr364xx_vidioc_streamoff(struct file *file, void *priv,
1242 enum v4l2_buf_type type)
1243{
ccbf035a
LVS		 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);
b7eee616
AJ		 1261 return 0;
1262}
1263
1264
1265/* open the camera */
bec43661 1266static int zr364xx_open(struct file *file)
b7eee616
AJ		 1267{
1268 struct video_device *vdev = video_devdata(file);
ccbf035a 1269 struct zr364xx_camera *cam = video_drvdata(file);
b7eee616
AJ		 1270 struct usb_device *udev = cam->udev;
1271 int i, err;
1272
ccbf035a 1273 DBG("%s\n", __func__);
b7eee616 1274
ccbf035a 1275 mutex_lock(&cam->open_lock);
69025c93 1276
33d27a45
AJ		 1277 if (cam->users) {
1278 err = -EBUSY;
69025c93 1279 goto out;
33d27a45 1280 }
b7eee616 1281
b7eee616
AJ		 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) {
a482f327
GKH		 1288 dev_err(&cam->udev->dev,
1289 "error during open sequence: %d\n", i);
69025c93 1290 goto out;
b7eee616
AJ		 1291 }
1292 }
1293
33d27a45
AJ		 1294 cam->skip = 2;
1295 cam->users++;
b7eee616 1296 file->private_data = vdev;
ccbf035a
LVS		 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,
08bff03e 1304 sizeof(struct zr364xx_buffer), cam, NULL);
b7eee616
AJ		 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);
69025c93 1310 err = 0;
b7eee616 1311
69025c93 1312out:
ccbf035a
LVS		 1313 mutex_unlock(&cam->open_lock);
1314 DBG("%s: %d\n", __func__, err);
69025c93 1315 return err;
b7eee616
AJ		 1316}
1317
ccbf035a
LVS		 1318static 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;
ccbf035a
LVS		 1349 mutex_unlock(&cam->open_lock);
1350 kfree(cam);
1351 cam = NULL;
1352}
b7eee616
AJ		 1353
1354/* release the camera */
bec43661 1355static int zr364xx_release(struct file *file)
b7eee616 1356{
b7eee616
AJ		 1357 struct zr364xx_camera *cam;
1358 struct usb_device *udev;
1359 int i, err;
1360
ccbf035a
LVS		 1361 DBG("%s\n", __func__);
1362 cam = video_drvdata(file);
b7eee616 1363
ccbf035a 1364 if (!cam)
b7eee616 1365 return -ENODEV;
b7eee616 1366
ccbf035a 1367 mutex_lock(&cam->open_lock);
b7eee616
AJ		 1368 udev = cam->udev;
1369
ccbf035a
LVS		 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 }
33d27a45
AJ		 1377
1378 cam->users--;
1379 file->private_data = NULL;
1380
b7eee616
AJ		 1381 for (i = 0; i < 2; i++) {
1382 err =
1383 send_control_msg(udev, 1, init[cam->method][i].value,
7b808924 1384 0, init[cam->method][i].bytes,
b7eee616
AJ		 1385 init[cam->method][i].size);
1386 if (err < 0) {
a482f327 1387 dev_err(&udev->dev, "error during release sequence\n");
33d27a45 1388 goto out;
b7eee616
AJ		 1389 }
1390 }
1391
b7eee616
AJ		 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);
33d27a45 1396 err = 0;
b7eee616 1397
33d27a45 1398out:
ccbf035a
LVS		 1399 mutex_unlock(&cam->open_lock);
1400
33d27a45 1401 return err;
b7eee616
AJ		 1402}
1403
1404
1405static int zr364xx_mmap(struct file *file, struct vm_area_struct *vma)
1406{
ccbf035a
LVS		 1407 struct zr364xx_camera *cam = video_drvdata(file);
1408 int ret;
b7eee616 1409
ccbf035a
LVS		 1410 if (cam == NULL) {
1411 DBG("%s: cam == NULL\n", __func__);
b7eee616 1412 return -ENODEV;
b7eee616 1413 }
ccbf035a 1414 DBG("mmap called, vma=0x%08lx\n", (unsigned long)vma);
b7eee616 1415
ccbf035a
LVS		 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;
b7eee616
AJ		 1422}
1423
ccbf035a
LVS		 1424static 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;
76594c53 1429 _DBG("%s\n", __func__);
ccbf035a
LVS		 1430
1431 if (cam->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1432 return POLLERR;
1433
1434 return videobuf_poll_stream(file, q, wait);
1435}
b7eee616 1436
bec43661 1437static const struct v4l2_file_operations zr364xx_fops = {
b7eee616
AJ		 1438 .owner = THIS_MODULE,
1439 .open = zr364xx_open,
1440 .release = zr364xx_release,
1441 .read = zr364xx_read,
1442 .mmap = zr364xx_mmap,
1443 .ioctl = video_ioctl2,
ccbf035a 1444 .poll = zr364xx_poll,
b7eee616
AJ		 1445};
1446
a399810c 1447static const struct v4l2_ioctl_ops zr364xx_ioctl_ops = {
b7eee616 1448 .vidioc_querycap = zr364xx_vidioc_querycap,
78b526a4
HV		 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,
b7eee616
AJ		 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,
ccbf035a
LVS		 1461 .vidioc_reqbufs = zr364xx_vidioc_reqbufs,
1462 .vidioc_querybuf = zr364xx_vidioc_querybuf,
1463 .vidioc_qbuf = zr364xx_vidioc_qbuf,
1464 .vidioc_dqbuf = zr364xx_vidioc_dqbuf,
b7eee616
AJ		 1465};
1466
a399810c 1467static struct video_device zr364xx_template = {
a399810c 1468 .name = DRIVER_DESC,
a399810c
HV		 1469 .fops = &zr364xx_fops,
1470 .ioctl_ops = &zr364xx_ioctl_ops,
1471 .release = video_device_release,
a399810c
HV		 1472};
1473
b7eee616
AJ		 1474
1475
1476/*******************/
1477/* USB integration */
1478/*******************/
ccbf035a
LVS		 1479static 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}
b7eee616
AJ		 1537
1538static 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;
ccbf035a
LVS		 1543 struct usb_host_interface *iface_desc;
1544 struct usb_endpoint_descriptor *endpoint;
783aa8fa 1545 int err;
ccbf035a 1546 int i;
b7eee616 1547
ccbf035a 1548 DBG("probing...\n");
b7eee616 1549
a482f327
GKH		 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));
b7eee616 1554
783aa8fa
AM		 1555 cam = kzalloc(sizeof(struct zr364xx_camera), GFP_KERNEL);
1556 if (cam == NULL) {
a482f327 1557 dev_err(&udev->dev, "cam: out of memory !\n");
783aa8fa 1558 return -ENOMEM;
b7eee616 1559 }
b7eee616
AJ		 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) {
a482f327 1565 dev_err(&udev->dev, "cam->vdev: out of memory !\n");
b7eee616 1566 kfree(cam);
ccbf035a 1567 cam = NULL;
783aa8fa 1568 return -ENOMEM;
b7eee616
AJ		 1569 }
1570 memcpy(cam->vdev, &zr364xx_template, sizeof(zr364xx_template));
ccbf035a 1571 cam->vdev->parent = &intf->dev;
b7eee616
AJ		 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
b7eee616
AJ		 1578 switch (mode) {
1579 case 1:
a482f327 1580 dev_info(&udev->dev, "160x120 mode selected\n");
b7eee616
AJ		 1581 cam->width = 160;
1582 cam->height = 120;
1583 break;
1584 case 2:
a482f327 1585 dev_info(&udev->dev, "640x480 mode selected\n");
b7eee616
AJ		 1586 cam->width = 640;
1587 cam->height = 480;
1588 break;
1589 default:
a482f327 1590 dev_info(&udev->dev, "320x240 mode selected\n");
b7eee616
AJ		 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;
08135ba2
AJ		 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
b7eee616
AJ		 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
ccbf035a 1620 cam->users = 0;
b7eee616 1621 cam->nb = 0;
ccbf035a 1622 cam->mode.brightness = 64;
b7eee616 1623 mutex_init(&cam->lock);
ccbf035a
LVS		 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 }
b7eee616 1638
ccbf035a
LVS		 1639 if (!cam->read_endpoint) {
1640 dev_err(&intf->dev, "Could not find bulk-in endpoint\n");
0163b924
JL		 1641 video_device_release(cam->vdev);
1642 kfree(cam);
1643 cam = NULL;
ccbf035a
LVS		 1644 return -ENOMEM;
1645 }
1646
1647 /* v4l */
1648 INIT_LIST_HEAD(&cam->vidq.active);
1649 cam->vidq.cam = cam;
783aa8fa
AM		 1650 err = video_register_device(cam->vdev, VFL_TYPE_GRABBER, -1);
1651 if (err) {
a482f327 1652 dev_err(&udev->dev, "video_register_device failed\n");
b7eee616 1653 video_device_release(cam->vdev);
b7eee616 1654 kfree(cam);
ccbf035a 1655 cam = NULL;
783aa8fa 1656 return err;
b7eee616
AJ		 1657 }
1658
1659 usb_set_intfdata(intf, cam);
1660
ccbf035a
LVS		 1661 /* load zr364xx board specific */
1662 err = zr364xx_board_init(cam);
1663 if (err) {
1664 spin_lock_init(&cam->slock);
1665 return err;
1666 }
1667
1668 spin_lock_init(&cam->slock);
1669
38c7c036
LP		 1670 dev_info(&udev->dev, DRIVER_DESC " controlling device %s\n",
1671 video_device_node_name(cam->vdev));
b7eee616
AJ		 1672 return 0;
1673}
1674
1675
1676static void zr364xx_disconnect(struct usb_interface *intf)
1677{
1678 struct zr364xx_camera *cam = usb_get_intfdata(intf);
ccbf035a 1679 videobuf_mmap_free(&cam->vb_vidq);
b7eee616 1680 usb_set_intfdata(intf, NULL);
a482f327 1681 dev_info(&intf->dev, DRIVER_DESC " webcam unplugged\n");
ccbf035a 1682 zr364xx_destroy(cam);
b7eee616
AJ		 1683}
1684
1685
1686
1687/**********************/
1688/* Module integration */
1689/**********************/
1690
1691static struct usb_driver zr364xx_driver = {
1692 .name = "zr364xx",
1693 .probe = zr364xx_probe,
1694 .disconnect = zr364xx_disconnect,
1695 .id_table = device_table
1696};
1697
1698
1699static int __init zr364xx_init(void)
1700{
1701 int retval;
783aa8fa 1702 retval = usb_register(&zr364xx_driver);
b7eee616 1703 if (retval)
a482f327 1704 printk(KERN_ERR KBUILD_MODNAME ": usb_register failed!\n");
b7eee616 1705 else
a482f327 1706 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n");
b7eee616
AJ		 1707 return retval;
1708}
1709
1710
1711static void __exit zr364xx_exit(void)
1712{
a482f327 1713 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC " module unloaded\n");
b7eee616
AJ		 1714 usb_deregister(&zr364xx_driver);
1715}
1716
1717
1718module_init(zr364xx_init);
1719module_exit(zr364xx_exit);
1720
1721MODULE_AUTHOR(DRIVER_AUTHOR);
1722MODULE_DESCRIPTION(DRIVER_DESC);
1723MODULE_LICENSE("GPL");
1990d50b 1724MODULE_VERSION(DRIVER_VERSION);
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