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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | Winbond w9966cf Webcam parport driver. | |
3 | ||
626e2acf | 4 | Version 0.33 |
1da177e4 LT |
5 | |
6 | Copyright (C) 2001 Jakob Kemi <jakob.kemi@post.utfors.se> | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
21 | */ | |
22 | /* | |
23 | Supported devices: | |
24 | *Lifeview FlyCam Supra (using the Philips saa7111a chip) | |
25 | ||
26 | Does any other model using the w9966 interface chip exist ? | |
27 | ||
28 | Todo: | |
d56410e0 | 29 | |
1da177e4 LT |
30 | *Add a working EPP mode, since DMA ECP read isn't implemented |
31 | in the parport drivers. (That's why it's so sloow) | |
32 | ||
33 | *Add support for other ccd-control chips than the saa7111 | |
34 | please send me feedback on what kind of chips you have. | |
35 | ||
36 | *Add proper probing. I don't know what's wrong with the IEEE1284 | |
37 | parport drivers but (IEEE1284_MODE_NIBBLE|IEEE1284_DEVICE_ID) | |
38 | and nibble read seems to be broken for some peripherals. | |
39 | ||
40 | *Add probing for onboard SRAM, port directions etc. (if possible) | |
41 | ||
42 | *Add support for the hardware compressed modes (maybe using v4l2) | |
43 | ||
44 | *Fix better support for the capture window (no skewed images, v4l | |
45 | interface to capt. window) | |
46 | ||
47 | *Probably some bugs that I don't know of | |
48 | ||
49 | Please support me by sending feedback! | |
d56410e0 | 50 | |
1da177e4 | 51 | Changes: |
d56410e0 | 52 | |
1da177e4 LT |
53 | Alan Cox: Removed RGB mode for kernel merge, added THIS_MODULE |
54 | and owner support for newer module locks | |
55 | */ | |
56 | ||
57 | #include <linux/module.h> | |
58 | #include <linux/init.h> | |
59 | #include <linux/delay.h> | |
626e2acf HV |
60 | #include <linux/version.h> |
61 | #include <linux/videodev2.h> | |
5a0e3ad6 | 62 | #include <linux/slab.h> |
5e87efa3 | 63 | #include <media/v4l2-common.h> |
35ea11ff | 64 | #include <media/v4l2-ioctl.h> |
626e2acf | 65 | #include <media/v4l2-device.h> |
1da177e4 LT |
66 | #include <linux/parport.h> |
67 | ||
ff699e6b | 68 | /*#define DEBUG*/ /* Undef me for production */ |
1da177e4 LT |
69 | |
70 | #ifdef DEBUG | |
7e28adb2 | 71 | #define DPRINTF(x, a...) printk(KERN_DEBUG "W9966: %s(): "x, __func__ , ##a) |
1da177e4 LT |
72 | #else |
73 | #define DPRINTF(x...) | |
74 | #endif | |
75 | ||
76 | /* | |
77 | * Defines, simple typedefs etc. | |
78 | */ | |
79 | ||
80 | #define W9966_DRIVERNAME "W9966CF Webcam" | |
4bfdd586 HV |
81 | #define W9966_MAXCAMS 4 /* Maximum number of cameras */ |
82 | #define W9966_RBUFFER 2048 /* Read buffer (must be an even number) */ | |
83 | #define W9966_SRAMSIZE 131072 /* 128kb */ | |
84 | #define W9966_SRAMID 0x02 /* check w9966cf.pdf */ | |
1da177e4 | 85 | |
4bfdd586 | 86 | /* Empirically determined window limits */ |
1da177e4 LT |
87 | #define W9966_WND_MIN_X 16 |
88 | #define W9966_WND_MIN_Y 14 | |
89 | #define W9966_WND_MAX_X 705 | |
90 | #define W9966_WND_MAX_Y 253 | |
91 | #define W9966_WND_MAX_W (W9966_WND_MAX_X - W9966_WND_MIN_X) | |
92 | #define W9966_WND_MAX_H (W9966_WND_MAX_Y - W9966_WND_MIN_Y) | |
93 | ||
4bfdd586 | 94 | /* Keep track of our current state */ |
1da177e4 LT |
95 | #define W9966_STATE_PDEV 0x01 |
96 | #define W9966_STATE_CLAIMED 0x02 | |
97 | #define W9966_STATE_VDEV 0x04 | |
98 | ||
99 | #define W9966_I2C_W_ID 0x48 | |
100 | #define W9966_I2C_R_ID 0x49 | |
101 | #define W9966_I2C_R_DATA 0x08 | |
102 | #define W9966_I2C_R_CLOCK 0x04 | |
103 | #define W9966_I2C_W_DATA 0x02 | |
104 | #define W9966_I2C_W_CLOCK 0x01 | |
105 | ||
626e2acf HV |
106 | struct w9966 { |
107 | struct v4l2_device v4l2_dev; | |
1da177e4 LT |
108 | unsigned char dev_state; |
109 | unsigned char i2c_state; | |
110 | unsigned short ppmode; | |
4bfdd586 HV |
111 | struct parport *pport; |
112 | struct pardevice *pdev; | |
1da177e4 LT |
113 | struct video_device vdev; |
114 | unsigned short width; | |
115 | unsigned short height; | |
116 | unsigned char brightness; | |
117 | signed char contrast; | |
118 | signed char color; | |
119 | signed char hue; | |
626e2acf | 120 | struct mutex lock; |
1da177e4 LT |
121 | }; |
122 | ||
123 | /* | |
124 | * Module specific properties | |
125 | */ | |
126 | ||
127 | MODULE_AUTHOR("Jakob Kemi <jakob.kemi@post.utfors.se>"); | |
128 | MODULE_DESCRIPTION("Winbond w9966cf WebCam driver (0.32)"); | |
129 | MODULE_LICENSE("GPL"); | |
130 | ||
131 | ||
132 | #ifdef MODULE | |
4bfdd586 | 133 | static const char *pardev[] = {[0 ... W9966_MAXCAMS] = ""}; |
1da177e4 | 134 | #else |
4bfdd586 | 135 | static const char *pardev[] = {[0 ... W9966_MAXCAMS] = "aggressive"}; |
1da177e4 LT |
136 | #endif |
137 | module_param_array(pardev, charp, NULL, 0); | |
4bfdd586 | 138 | MODULE_PARM_DESC(pardev, "pardev: where to search for\n" |
c1f2b0f2 HV |
139 | "\teach camera. 'aggressive' means brute-force search.\n" |
140 | "\tEg: >pardev=parport3,aggressive,parport2,parport1< would assign\n" | |
141 | "\tcam 1 to parport3 and search every parport for cam 2 etc..."); | |
1da177e4 | 142 | |
ff699e6b | 143 | static int parmode; |
1da177e4 LT |
144 | module_param(parmode, int, 0); |
145 | MODULE_PARM_DESC(parmode, "parmode: transfer mode (0=auto, 1=ecp, 2=epp"); | |
146 | ||
147 | static int video_nr = -1; | |
148 | module_param(video_nr, int, 0); | |
149 | ||
626e2acf | 150 | static struct w9966 w9966_cams[W9966_MAXCAMS]; |
1da177e4 | 151 | |
1da177e4 LT |
152 | /* |
153 | * Private function defines | |
154 | */ | |
155 | ||
156 | ||
4bfdd586 | 157 | /* Set camera phase flags, so we know what to uninit when terminating */ |
626e2acf | 158 | static inline void w9966_set_state(struct w9966 *cam, int mask, int val) |
1da177e4 LT |
159 | { |
160 | cam->dev_state = (cam->dev_state & ~mask) ^ val; | |
161 | } | |
162 | ||
4bfdd586 | 163 | /* Get camera phase flags */ |
626e2acf | 164 | static inline int w9966_get_state(struct w9966 *cam, int mask, int val) |
1da177e4 LT |
165 | { |
166 | return ((cam->dev_state & mask) == val); | |
167 | } | |
168 | ||
4bfdd586 | 169 | /* Claim parport for ourself */ |
626e2acf | 170 | static void w9966_pdev_claim(struct w9966 *cam) |
1da177e4 | 171 | { |
c1f2b0f2 | 172 | if (w9966_get_state(cam, W9966_STATE_CLAIMED, W9966_STATE_CLAIMED)) |
1da177e4 LT |
173 | return; |
174 | parport_claim_or_block(cam->pdev); | |
c1f2b0f2 | 175 | w9966_set_state(cam, W9966_STATE_CLAIMED, W9966_STATE_CLAIMED); |
1da177e4 LT |
176 | } |
177 | ||
4bfdd586 | 178 | /* Release parport for others to use */ |
626e2acf | 179 | static void w9966_pdev_release(struct w9966 *cam) |
1da177e4 | 180 | { |
c1f2b0f2 | 181 | if (w9966_get_state(cam, W9966_STATE_CLAIMED, 0)) |
1da177e4 LT |
182 | return; |
183 | parport_release(cam->pdev); | |
c1f2b0f2 | 184 | w9966_set_state(cam, W9966_STATE_CLAIMED, 0); |
1da177e4 | 185 | } |
d56410e0 | 186 | |
4bfdd586 HV |
187 | /* Read register from W9966 interface-chip |
188 | Expects a claimed pdev | |
189 | -1 on error, else register data (byte) */ | |
626e2acf | 190 | static int w9966_read_reg(struct w9966 *cam, int reg) |
1da177e4 | 191 | { |
4bfdd586 | 192 | /* ECP, read, regtransfer, REG, REG, REG, REG, REG */ |
1da177e4 LT |
193 | const unsigned char addr = 0x80 | (reg & 0x1f); |
194 | unsigned char val; | |
d56410e0 | 195 | |
1da177e4 LT |
196 | if (parport_negotiate(cam->pport, cam->ppmode | IEEE1284_ADDR) != 0) |
197 | return -1; | |
198 | if (parport_write(cam->pport, &addr, 1) != 1) | |
199 | return -1; | |
200 | if (parport_negotiate(cam->pport, cam->ppmode | IEEE1284_DATA) != 0) | |
201 | return -1; | |
202 | if (parport_read(cam->pport, &val, 1) != 1) | |
203 | return -1; | |
204 | ||
205 | return val; | |
206 | } | |
207 | ||
4bfdd586 HV |
208 | /* Write register to W9966 interface-chip |
209 | Expects a claimed pdev | |
210 | -1 on error */ | |
626e2acf | 211 | static int w9966_write_reg(struct w9966 *cam, int reg, int data) |
1da177e4 | 212 | { |
4bfdd586 | 213 | /* ECP, write, regtransfer, REG, REG, REG, REG, REG */ |
1da177e4 LT |
214 | const unsigned char addr = 0xc0 | (reg & 0x1f); |
215 | const unsigned char val = data; | |
d56410e0 | 216 | |
1da177e4 LT |
217 | if (parport_negotiate(cam->pport, cam->ppmode | IEEE1284_ADDR) != 0) |
218 | return -1; | |
219 | if (parport_write(cam->pport, &addr, 1) != 1) | |
220 | return -1; | |
221 | if (parport_negotiate(cam->pport, cam->ppmode | IEEE1284_DATA) != 0) | |
222 | return -1; | |
223 | if (parport_write(cam->pport, &val, 1) != 1) | |
224 | return -1; | |
225 | ||
226 | return 0; | |
227 | } | |
228 | ||
271922c0 HV |
229 | /* |
230 | * Ugly and primitive i2c protocol functions | |
231 | */ | |
232 | ||
233 | /* Sets the data line on the i2c bus. | |
234 | Expects a claimed pdev. */ | |
626e2acf | 235 | static void w9966_i2c_setsda(struct w9966 *cam, int state) |
1da177e4 | 236 | { |
271922c0 HV |
237 | if (state) |
238 | cam->i2c_state |= W9966_I2C_W_DATA; | |
239 | else | |
240 | cam->i2c_state &= ~W9966_I2C_W_DATA; | |
d56410e0 | 241 | |
c1f2b0f2 | 242 | w9966_write_reg(cam, 0x18, cam->i2c_state); |
271922c0 HV |
243 | udelay(5); |
244 | } | |
1da177e4 | 245 | |
271922c0 HV |
246 | /* Get peripheral clock line |
247 | Expects a claimed pdev. */ | |
626e2acf | 248 | static int w9966_i2c_getscl(struct w9966 *cam) |
271922c0 | 249 | { |
c1f2b0f2 | 250 | const unsigned char state = w9966_read_reg(cam, 0x18); |
271922c0 HV |
251 | return ((state & W9966_I2C_R_CLOCK) > 0); |
252 | } | |
253 | ||
254 | /* Sets the clock line on the i2c bus. | |
255 | Expects a claimed pdev. -1 on error */ | |
626e2acf | 256 | static int w9966_i2c_setscl(struct w9966 *cam, int state) |
271922c0 HV |
257 | { |
258 | unsigned long timeout; | |
259 | ||
260 | if (state) | |
261 | cam->i2c_state |= W9966_I2C_W_CLOCK; | |
262 | else | |
263 | cam->i2c_state &= ~W9966_I2C_W_CLOCK; | |
264 | ||
c1f2b0f2 | 265 | w9966_write_reg(cam, 0x18, cam->i2c_state); |
271922c0 HV |
266 | udelay(5); |
267 | ||
268 | /* we go to high, we also expect the peripheral to ack. */ | |
269 | if (state) { | |
270 | timeout = jiffies + 100; | |
271 | while (!w9966_i2c_getscl(cam)) { | |
272 | if (time_after(jiffies, timeout)) | |
273 | return -1; | |
274 | } | |
1da177e4 | 275 | } |
271922c0 HV |
276 | return 0; |
277 | } | |
d56410e0 | 278 | |
271922c0 HV |
279 | #if 0 |
280 | /* Get peripheral data line | |
281 | Expects a claimed pdev. */ | |
626e2acf | 282 | static int w9966_i2c_getsda(struct w9966 *cam) |
271922c0 | 283 | { |
c1f2b0f2 | 284 | const unsigned char state = w9966_read_reg(cam, 0x18); |
271922c0 HV |
285 | return ((state & W9966_I2C_R_DATA) > 0); |
286 | } | |
287 | #endif | |
288 | ||
289 | /* Write a byte with ack to the i2c bus. | |
290 | Expects a claimed pdev. -1 on error */ | |
626e2acf | 291 | static int w9966_i2c_wbyte(struct w9966 *cam, int data) |
271922c0 HV |
292 | { |
293 | int i; | |
294 | ||
295 | for (i = 7; i >= 0; i--) { | |
296 | w9966_i2c_setsda(cam, (data >> i) & 0x01); | |
297 | ||
298 | if (w9966_i2c_setscl(cam, 1) == -1) | |
299 | return -1; | |
300 | w9966_i2c_setscl(cam, 0); | |
1da177e4 | 301 | } |
1da177e4 | 302 | |
271922c0 | 303 | w9966_i2c_setsda(cam, 1); |
d56410e0 | 304 | |
271922c0 | 305 | if (w9966_i2c_setscl(cam, 1) == -1) |
1da177e4 | 306 | return -1; |
271922c0 HV |
307 | w9966_i2c_setscl(cam, 0); |
308 | ||
309 | return 0; | |
310 | } | |
311 | ||
312 | /* Read a data byte with ack from the i2c-bus | |
313 | Expects a claimed pdev. -1 on error */ | |
314 | #if 0 | |
626e2acf | 315 | static int w9966_i2c_rbyte(struct w9966 *cam) |
271922c0 HV |
316 | { |
317 | unsigned char data = 0x00; | |
318 | int i; | |
319 | ||
320 | w9966_i2c_setsda(cam, 1); | |
321 | ||
322 | for (i = 0; i < 8; i++) { | |
323 | if (w9966_i2c_setscl(cam, 1) == -1) | |
324 | return -1; | |
325 | data = data << 1; | |
326 | if (w9966_i2c_getsda(cam)) | |
327 | data |= 0x01; | |
328 | ||
329 | w9966_i2c_setscl(cam, 0); | |
1da177e4 | 330 | } |
271922c0 HV |
331 | return data; |
332 | } | |
333 | #endif | |
1da177e4 | 334 | |
271922c0 HV |
335 | /* Read a register from the i2c device. |
336 | Expects claimed pdev. -1 on error */ | |
337 | #if 0 | |
626e2acf | 338 | static int w9966_read_reg_i2c(struct w9966 *cam, int reg) |
271922c0 HV |
339 | { |
340 | int data; | |
1da177e4 | 341 | |
271922c0 HV |
342 | w9966_i2c_setsda(cam, 0); |
343 | w9966_i2c_setscl(cam, 0); | |
1da177e4 | 344 | |
271922c0 HV |
345 | if (w9966_i2c_wbyte(cam, W9966_I2C_W_ID) == -1 || |
346 | w9966_i2c_wbyte(cam, reg) == -1) | |
1da177e4 | 347 | return -1; |
d56410e0 | 348 | |
271922c0 HV |
349 | w9966_i2c_setsda(cam, 1); |
350 | if (w9966_i2c_setscl(cam, 1) == -1) | |
351 | return -1; | |
352 | w9966_i2c_setsda(cam, 0); | |
353 | w9966_i2c_setscl(cam, 0); | |
d56410e0 | 354 | |
271922c0 HV |
355 | if (w9966_i2c_wbyte(cam, W9966_I2C_R_ID) == -1) |
356 | return -1; | |
357 | data = w9966_i2c_rbyte(cam); | |
358 | if (data == -1) | |
359 | return -1; | |
1da177e4 | 360 | |
271922c0 | 361 | w9966_i2c_setsda(cam, 0); |
1da177e4 | 362 | |
271922c0 HV |
363 | if (w9966_i2c_setscl(cam, 1) == -1) |
364 | return -1; | |
365 | w9966_i2c_setsda(cam, 1); | |
366 | ||
367 | return data; | |
368 | } | |
369 | #endif | |
370 | ||
371 | /* Write a register to the i2c device. | |
372 | Expects claimed pdev. -1 on error */ | |
626e2acf | 373 | static int w9966_write_reg_i2c(struct w9966 *cam, int reg, int data) |
1da177e4 | 374 | { |
271922c0 HV |
375 | w9966_i2c_setsda(cam, 0); |
376 | w9966_i2c_setscl(cam, 0); | |
1da177e4 | 377 | |
271922c0 | 378 | if (w9966_i2c_wbyte(cam, W9966_I2C_W_ID) == -1 || |
c1f2b0f2 HV |
379 | w9966_i2c_wbyte(cam, reg) == -1 || |
380 | w9966_i2c_wbyte(cam, data) == -1) | |
271922c0 | 381 | return -1; |
1da177e4 | 382 | |
271922c0 HV |
383 | w9966_i2c_setsda(cam, 0); |
384 | if (w9966_i2c_setscl(cam, 1) == -1) | |
385 | return -1; | |
386 | ||
387 | w9966_i2c_setsda(cam, 1); | |
1da177e4 | 388 | |
271922c0 HV |
389 | return 0; |
390 | } | |
1da177e4 | 391 | |
4bfdd586 HV |
392 | /* Find a good length for capture window (used both for W and H) |
393 | A bit ugly but pretty functional. The capture length | |
394 | have to match the downscale */ | |
1da177e4 LT |
395 | static int w9966_findlen(int near, int size, int maxlen) |
396 | { | |
397 | int bestlen = size; | |
398 | int besterr = abs(near - bestlen); | |
399 | int len; | |
400 | ||
4bfdd586 | 401 | for (len = size + 1; len < maxlen; len++) { |
1da177e4 | 402 | int err; |
4bfdd586 | 403 | if (((64 * size) % len) != 0) |
1da177e4 LT |
404 | continue; |
405 | ||
406 | err = abs(near - len); | |
407 | ||
4bfdd586 | 408 | /* Only continue as long as we keep getting better values */ |
1da177e4 LT |
409 | if (err > besterr) |
410 | break; | |
d56410e0 | 411 | |
1da177e4 LT |
412 | besterr = err; |
413 | bestlen = len; | |
414 | } | |
415 | ||
416 | return bestlen; | |
417 | } | |
418 | ||
4bfdd586 HV |
419 | /* Modify capture window (if necessary) |
420 | and calculate downscaling | |
421 | Return -1 on error */ | |
422 | static int w9966_calcscale(int size, int min, int max, int *beg, int *end, unsigned char *factor) | |
1da177e4 LT |
423 | { |
424 | int maxlen = max - min; | |
425 | int len = *end - *beg + 1; | |
426 | int newlen = w9966_findlen(len, size, maxlen); | |
d56410e0 | 427 | int err = newlen - len; |
1da177e4 | 428 | |
4bfdd586 | 429 | /* Check for bad format */ |
1da177e4 LT |
430 | if (newlen > maxlen || newlen < size) |
431 | return -1; | |
432 | ||
4bfdd586 HV |
433 | /* Set factor (6 bit fixed) */ |
434 | *factor = (64 * size) / newlen; | |
1da177e4 | 435 | if (*factor == 64) |
4bfdd586 | 436 | *factor = 0x00; /* downscale is disabled */ |
1da177e4 | 437 | else |
4bfdd586 | 438 | *factor |= 0x80; /* set downscale-enable bit */ |
1da177e4 | 439 | |
4bfdd586 | 440 | /* Modify old beginning and end */ |
1da177e4 LT |
441 | *beg -= err / 2; |
442 | *end += err - (err / 2); | |
443 | ||
4bfdd586 | 444 | /* Move window if outside borders */ |
1da177e4 LT |
445 | if (*beg < min) { |
446 | *end += min - *beg; | |
447 | *beg += min - *beg; | |
448 | } | |
449 | if (*end > max) { | |
450 | *beg -= *end - max; | |
451 | *end -= *end - max; | |
452 | } | |
453 | ||
454 | return 0; | |
455 | } | |
456 | ||
4bfdd586 HV |
457 | /* Setup the cameras capture window etc. |
458 | Expects a claimed pdev | |
459 | return -1 on error */ | |
626e2acf | 460 | static int w9966_setup(struct w9966 *cam, int x1, int y1, int x2, int y2, int w, int h) |
1da177e4 LT |
461 | { |
462 | unsigned int i; | |
463 | unsigned int enh_s, enh_e; | |
464 | unsigned char scale_x, scale_y; | |
465 | unsigned char regs[0x1c]; | |
466 | unsigned char saa7111_regs[] = { | |
467 | 0x21, 0x00, 0xd8, 0x23, 0x00, 0x80, 0x80, 0x00, | |
468 | 0x88, 0x10, 0x80, 0x40, 0x40, 0x00, 0x01, 0x00, | |
469 | 0x48, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
470 | 0x00, 0x00, 0x00, 0x71, 0xe7, 0x00, 0x00, 0xc0 | |
471 | }; | |
d56410e0 MCC |
472 | |
473 | ||
4bfdd586 | 474 | if (w * h * 2 > W9966_SRAMSIZE) { |
1da177e4 | 475 | DPRINTF("capture window exceeds SRAM size!.\n"); |
4bfdd586 | 476 | w = 200; h = 160; /* Pick default values */ |
1da177e4 LT |
477 | } |
478 | ||
479 | w &= ~0x1; | |
4bfdd586 HV |
480 | if (w < 2) |
481 | w = 2; | |
482 | if (h < 1) | |
483 | h = 1; | |
484 | if (w > W9966_WND_MAX_W) | |
485 | w = W9966_WND_MAX_W; | |
486 | if (h > W9966_WND_MAX_H) | |
487 | h = W9966_WND_MAX_H; | |
1da177e4 LT |
488 | |
489 | cam->width = w; | |
490 | cam->height = h; | |
491 | ||
d56410e0 | 492 | enh_s = 0; |
4bfdd586 HV |
493 | enh_e = w * h * 2; |
494 | ||
c1f2b0f2 | 495 | /* Modify capture window if necessary and calculate downscaling */ |
4bfdd586 | 496 | if (w9966_calcscale(w, W9966_WND_MIN_X, W9966_WND_MAX_X, &x1, &x2, &scale_x) != 0 || |
c1f2b0f2 | 497 | w9966_calcscale(h, W9966_WND_MIN_Y, W9966_WND_MAX_Y, &y1, &y2, &scale_y) != 0) |
4bfdd586 HV |
498 | return -1; |
499 | ||
500 | DPRINTF("%dx%d, x: %d<->%d, y: %d<->%d, sx: %d/64, sy: %d/64.\n", | |
c1f2b0f2 | 501 | w, h, x1, x2, y1, y2, scale_x & ~0x80, scale_y & ~0x80); |
4bfdd586 | 502 | |
c1f2b0f2 | 503 | /* Setup registers */ |
4bfdd586 HV |
504 | regs[0x00] = 0x00; /* Set normal operation */ |
505 | regs[0x01] = 0x18; /* Capture mode */ | |
506 | regs[0x02] = scale_y; /* V-scaling */ | |
507 | regs[0x03] = scale_x; /* H-scaling */ | |
508 | ||
509 | /* Capture window */ | |
510 | regs[0x04] = (x1 & 0x0ff); /* X-start (8 low bits) */ | |
511 | regs[0x05] = (x1 & 0x300)>>8; /* X-start (2 high bits) */ | |
512 | regs[0x06] = (y1 & 0x0ff); /* Y-start (8 low bits) */ | |
513 | regs[0x07] = (y1 & 0x300)>>8; /* Y-start (2 high bits) */ | |
514 | regs[0x08] = (x2 & 0x0ff); /* X-end (8 low bits) */ | |
515 | regs[0x09] = (x2 & 0x300)>>8; /* X-end (2 high bits) */ | |
516 | regs[0x0a] = (y2 & 0x0ff); /* Y-end (8 low bits) */ | |
517 | ||
518 | regs[0x0c] = W9966_SRAMID; /* SRAM-banks (1x 128kb) */ | |
519 | ||
520 | /* Enhancement layer */ | |
521 | regs[0x0d] = (enh_s & 0x000ff); /* Enh. start (0-7) */ | |
522 | regs[0x0e] = (enh_s & 0x0ff00) >> 8; /* Enh. start (8-15) */ | |
523 | regs[0x0f] = (enh_s & 0x70000) >> 16; /* Enh. start (16-17/18??) */ | |
524 | regs[0x10] = (enh_e & 0x000ff); /* Enh. end (0-7) */ | |
525 | regs[0x11] = (enh_e & 0x0ff00) >> 8; /* Enh. end (8-15) */ | |
526 | regs[0x12] = (enh_e & 0x70000) >> 16; /* Enh. end (16-17/18??) */ | |
527 | ||
528 | /* Misc */ | |
529 | regs[0x13] = 0x40; /* VEE control (raw 4:2:2) */ | |
530 | regs[0x17] = 0x00; /* ??? */ | |
531 | regs[0x18] = cam->i2c_state = 0x00; /* Serial bus */ | |
532 | regs[0x19] = 0xff; /* I/O port direction control */ | |
533 | regs[0x1a] = 0xff; /* I/O port data register */ | |
534 | regs[0x1b] = 0x10; /* ??? */ | |
535 | ||
536 | /* SAA7111 chip settings */ | |
1da177e4 LT |
537 | saa7111_regs[0x0a] = cam->brightness; |
538 | saa7111_regs[0x0b] = cam->contrast; | |
539 | saa7111_regs[0x0c] = cam->color; | |
540 | saa7111_regs[0x0d] = cam->hue; | |
541 | ||
c1f2b0f2 HV |
542 | /* Reset (ECP-fifo & serial-bus) */ |
543 | if (w9966_write_reg(cam, 0x00, 0x03) == -1) | |
1da177e4 LT |
544 | return -1; |
545 | ||
c1f2b0f2 | 546 | /* Write regs to w9966cf chip */ |
1da177e4 | 547 | for (i = 0; i < 0x1c; i++) |
c1f2b0f2 | 548 | if (w9966_write_reg(cam, i, regs[i]) == -1) |
1da177e4 LT |
549 | return -1; |
550 | ||
c1f2b0f2 | 551 | /* Write regs to saa7111 chip */ |
1da177e4 | 552 | for (i = 0; i < 0x20; i++) |
c1f2b0f2 | 553 | if (w9966_write_reg_i2c(cam, i, saa7111_regs[i]) == -1) |
1da177e4 LT |
554 | return -1; |
555 | ||
556 | return 0; | |
557 | } | |
558 | ||
559 | /* | |
271922c0 | 560 | * Video4linux interfacing |
1da177e4 LT |
561 | */ |
562 | ||
626e2acf HV |
563 | static int cam_querycap(struct file *file, void *priv, |
564 | struct v4l2_capability *vcap) | |
565 | { | |
566 | struct w9966 *cam = video_drvdata(file); | |
567 | ||
568 | strlcpy(vcap->driver, cam->v4l2_dev.name, sizeof(vcap->driver)); | |
569 | strlcpy(vcap->card, W9966_DRIVERNAME, sizeof(vcap->card)); | |
570 | strlcpy(vcap->bus_info, "parport", sizeof(vcap->bus_info)); | |
571 | vcap->version = KERNEL_VERSION(0, 33, 0); | |
572 | vcap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE; | |
573 | return 0; | |
574 | } | |
575 | ||
576 | static int cam_enum_input(struct file *file, void *fh, struct v4l2_input *vin) | |
577 | { | |
578 | if (vin->index > 0) | |
1da177e4 | 579 | return -EINVAL; |
626e2acf HV |
580 | strlcpy(vin->name, "Camera", sizeof(vin->name)); |
581 | vin->type = V4L2_INPUT_TYPE_CAMERA; | |
582 | vin->audioset = 0; | |
583 | vin->tuner = 0; | |
584 | vin->std = 0; | |
585 | vin->status = 0; | |
586 | return 0; | |
587 | } | |
588 | ||
589 | static int cam_g_input(struct file *file, void *fh, unsigned int *inp) | |
590 | { | |
591 | *inp = 0; | |
592 | return 0; | |
593 | } | |
594 | ||
595 | static int cam_s_input(struct file *file, void *fh, unsigned int inp) | |
596 | { | |
597 | return (inp > 0) ? -EINVAL : 0; | |
598 | } | |
599 | ||
600 | static int cam_queryctrl(struct file *file, void *priv, | |
601 | struct v4l2_queryctrl *qc) | |
602 | { | |
603 | switch (qc->id) { | |
604 | case V4L2_CID_BRIGHTNESS: | |
605 | return v4l2_ctrl_query_fill(qc, 0, 255, 1, 128); | |
606 | case V4L2_CID_CONTRAST: | |
607 | return v4l2_ctrl_query_fill(qc, -64, 64, 1, 64); | |
608 | case V4L2_CID_SATURATION: | |
609 | return v4l2_ctrl_query_fill(qc, -64, 64, 1, 64); | |
610 | case V4L2_CID_HUE: | |
611 | return v4l2_ctrl_query_fill(qc, -128, 127, 1, 0); | |
612 | } | |
613 | return -EINVAL; | |
614 | } | |
615 | ||
616 | static int cam_g_ctrl(struct file *file, void *priv, | |
617 | struct v4l2_control *ctrl) | |
618 | { | |
619 | struct w9966 *cam = video_drvdata(file); | |
620 | int ret = 0; | |
621 | ||
622 | switch (ctrl->id) { | |
623 | case V4L2_CID_BRIGHTNESS: | |
624 | ctrl->value = cam->brightness; | |
625 | break; | |
626 | case V4L2_CID_CONTRAST: | |
627 | ctrl->value = cam->contrast; | |
628 | break; | |
629 | case V4L2_CID_SATURATION: | |
630 | ctrl->value = cam->color; | |
631 | break; | |
632 | case V4L2_CID_HUE: | |
633 | ctrl->value = cam->hue; | |
634 | break; | |
1da177e4 | 635 | default: |
626e2acf HV |
636 | ret = -EINVAL; |
637 | break; | |
1da177e4 | 638 | } |
626e2acf HV |
639 | return ret; |
640 | } | |
641 | ||
642 | static int cam_s_ctrl(struct file *file, void *priv, | |
643 | struct v4l2_control *ctrl) | |
644 | { | |
645 | struct w9966 *cam = video_drvdata(file); | |
646 | int ret = 0; | |
647 | ||
648 | mutex_lock(&cam->lock); | |
649 | switch (ctrl->id) { | |
650 | case V4L2_CID_BRIGHTNESS: | |
651 | cam->brightness = ctrl->value; | |
652 | break; | |
653 | case V4L2_CID_CONTRAST: | |
654 | cam->contrast = ctrl->value; | |
655 | break; | |
656 | case V4L2_CID_SATURATION: | |
657 | cam->color = ctrl->value; | |
658 | break; | |
659 | case V4L2_CID_HUE: | |
660 | cam->hue = ctrl->value; | |
661 | break; | |
662 | default: | |
663 | ret = -EINVAL; | |
664 | break; | |
665 | } | |
666 | ||
667 | if (ret == 0) { | |
668 | w9966_pdev_claim(cam); | |
669 | ||
670 | if (w9966_write_reg_i2c(cam, 0x0a, cam->brightness) == -1 || | |
671 | w9966_write_reg_i2c(cam, 0x0b, cam->contrast) == -1 || | |
672 | w9966_write_reg_i2c(cam, 0x0c, cam->color) == -1 || | |
673 | w9966_write_reg_i2c(cam, 0x0d, cam->hue) == -1) { | |
674 | ret = -EIO; | |
675 | } | |
676 | ||
677 | w9966_pdev_release(cam); | |
678 | } | |
679 | mutex_unlock(&cam->lock); | |
680 | return ret; | |
681 | } | |
682 | ||
683 | static int cam_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt) | |
684 | { | |
685 | struct w9966 *cam = video_drvdata(file); | |
686 | struct v4l2_pix_format *pix = &fmt->fmt.pix; | |
687 | ||
688 | pix->width = cam->width; | |
689 | pix->height = cam->height; | |
690 | pix->pixelformat = V4L2_PIX_FMT_YUYV; | |
691 | pix->field = V4L2_FIELD_NONE; | |
692 | pix->bytesperline = 2 * cam->width; | |
693 | pix->sizeimage = 2 * cam->width * cam->height; | |
694 | /* Just a guess */ | |
695 | pix->colorspace = V4L2_COLORSPACE_SMPTE170M; | |
1da177e4 LT |
696 | return 0; |
697 | } | |
698 | ||
626e2acf | 699 | static int cam_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt) |
1da177e4 | 700 | { |
626e2acf HV |
701 | struct v4l2_pix_format *pix = &fmt->fmt.pix; |
702 | ||
703 | if (pix->width < 2) | |
704 | pix->width = 2; | |
705 | if (pix->height < 1) | |
706 | pix->height = 1; | |
707 | if (pix->width > W9966_WND_MAX_W) | |
708 | pix->width = W9966_WND_MAX_W; | |
709 | if (pix->height > W9966_WND_MAX_H) | |
710 | pix->height = W9966_WND_MAX_H; | |
711 | pix->pixelformat = V4L2_PIX_FMT_YUYV; | |
712 | pix->field = V4L2_FIELD_NONE; | |
713 | pix->bytesperline = 2 * pix->width; | |
714 | pix->sizeimage = 2 * pix->width * pix->height; | |
715 | /* Just a guess */ | |
716 | pix->colorspace = V4L2_COLORSPACE_SMPTE170M; | |
717 | return 0; | |
718 | } | |
719 | ||
720 | static int cam_s_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *fmt) | |
721 | { | |
722 | struct w9966 *cam = video_drvdata(file); | |
723 | struct v4l2_pix_format *pix = &fmt->fmt.pix; | |
724 | int ret = cam_try_fmt_vid_cap(file, fh, fmt); | |
725 | ||
726 | if (ret) | |
727 | return ret; | |
728 | ||
729 | mutex_lock(&cam->lock); | |
730 | /* Update camera regs */ | |
731 | w9966_pdev_claim(cam); | |
732 | ret = w9966_setup(cam, 0, 0, 1023, 1023, pix->width, pix->height); | |
733 | w9966_pdev_release(cam); | |
734 | mutex_unlock(&cam->lock); | |
735 | return ret; | |
736 | } | |
737 | ||
738 | static int cam_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *fmt) | |
739 | { | |
740 | static struct v4l2_fmtdesc formats[] = { | |
741 | { 0, 0, 0, | |
742 | "YUV 4:2:2", V4L2_PIX_FMT_YUYV, | |
743 | { 0, 0, 0, 0 } | |
744 | }, | |
745 | }; | |
746 | enum v4l2_buf_type type = fmt->type; | |
747 | ||
748 | if (fmt->index > 0) | |
749 | return -EINVAL; | |
750 | ||
751 | *fmt = formats[fmt->index]; | |
752 | fmt->type = type; | |
753 | return 0; | |
1da177e4 LT |
754 | } |
755 | ||
4bfdd586 | 756 | /* Capture data */ |
1da177e4 | 757 | static ssize_t w9966_v4l_read(struct file *file, char __user *buf, |
c1f2b0f2 | 758 | size_t count, loff_t *ppos) |
1da177e4 | 759 | { |
626e2acf | 760 | struct w9966 *cam = video_drvdata(file); |
4bfdd586 | 761 | unsigned char addr = 0xa0; /* ECP, read, CCD-transfer, 00000 */ |
1da177e4 LT |
762 | unsigned char __user *dest = (unsigned char __user *)buf; |
763 | unsigned long dleft = count; | |
764 | unsigned char *tbuf; | |
d56410e0 | 765 | |
4bfdd586 | 766 | /* Why would anyone want more than this?? */ |
1da177e4 LT |
767 | if (count > cam->width * cam->height * 2) |
768 | return -EINVAL; | |
d56410e0 | 769 | |
626e2acf | 770 | mutex_lock(&cam->lock); |
1da177e4 | 771 | w9966_pdev_claim(cam); |
c1f2b0f2 HV |
772 | w9966_write_reg(cam, 0x00, 0x02); /* Reset ECP-FIFO buffer */ |
773 | w9966_write_reg(cam, 0x00, 0x00); /* Return to normal operation */ | |
774 | w9966_write_reg(cam, 0x01, 0x98); /* Enable capture */ | |
4bfdd586 HV |
775 | |
776 | /* write special capture-addr and negotiate into data transfer */ | |
777 | if ((parport_negotiate(cam->pport, cam->ppmode|IEEE1284_ADDR) != 0) || | |
c1f2b0f2 HV |
778 | (parport_write(cam->pport, &addr, 1) != 1) || |
779 | (parport_negotiate(cam->pport, cam->ppmode|IEEE1284_DATA) != 0)) { | |
1da177e4 | 780 | w9966_pdev_release(cam); |
626e2acf | 781 | mutex_unlock(&cam->lock); |
1da177e4 LT |
782 | return -EFAULT; |
783 | } | |
784 | ||
785 | tbuf = kmalloc(W9966_RBUFFER, GFP_KERNEL); | |
786 | if (tbuf == NULL) { | |
787 | count = -ENOMEM; | |
788 | goto out; | |
789 | } | |
790 | ||
4bfdd586 | 791 | while (dleft > 0) { |
1da177e4 | 792 | unsigned long tsize = (dleft > W9966_RBUFFER) ? W9966_RBUFFER : dleft; |
d56410e0 | 793 | |
1da177e4 LT |
794 | if (parport_read(cam->pport, tbuf, tsize) < tsize) { |
795 | count = -EFAULT; | |
796 | goto out; | |
797 | } | |
798 | if (copy_to_user(dest, tbuf, tsize) != 0) { | |
799 | count = -EFAULT; | |
800 | goto out; | |
801 | } | |
802 | dest += tsize; | |
803 | dleft -= tsize; | |
804 | } | |
805 | ||
c1f2b0f2 | 806 | w9966_write_reg(cam, 0x01, 0x18); /* Disable capture */ |
1da177e4 LT |
807 | |
808 | out: | |
809 | kfree(tbuf); | |
810 | w9966_pdev_release(cam); | |
626e2acf | 811 | mutex_unlock(&cam->lock); |
1da177e4 LT |
812 | |
813 | return count; | |
814 | } | |
815 | ||
271922c0 HV |
816 | static const struct v4l2_file_operations w9966_fops = { |
817 | .owner = THIS_MODULE, | |
61df3c9b | 818 | .unlocked_ioctl = video_ioctl2, |
271922c0 HV |
819 | .read = w9966_v4l_read, |
820 | }; | |
821 | ||
626e2acf HV |
822 | static const struct v4l2_ioctl_ops w9966_ioctl_ops = { |
823 | .vidioc_querycap = cam_querycap, | |
824 | .vidioc_g_input = cam_g_input, | |
825 | .vidioc_s_input = cam_s_input, | |
826 | .vidioc_enum_input = cam_enum_input, | |
827 | .vidioc_queryctrl = cam_queryctrl, | |
828 | .vidioc_g_ctrl = cam_g_ctrl, | |
829 | .vidioc_s_ctrl = cam_s_ctrl, | |
830 | .vidioc_enum_fmt_vid_cap = cam_enum_fmt_vid_cap, | |
831 | .vidioc_g_fmt_vid_cap = cam_g_fmt_vid_cap, | |
832 | .vidioc_s_fmt_vid_cap = cam_s_fmt_vid_cap, | |
833 | .vidioc_try_fmt_vid_cap = cam_try_fmt_vid_cap, | |
271922c0 HV |
834 | }; |
835 | ||
836 | ||
837 | /* Initialize camera device. Setup all internal flags, set a | |
838 | default video mode, setup ccd-chip, register v4l device etc.. | |
839 | Also used for 'probing' of hardware. | |
840 | -1 on error */ | |
626e2acf | 841 | static int w9966_init(struct w9966 *cam, struct parport *port) |
271922c0 | 842 | { |
626e2acf HV |
843 | struct v4l2_device *v4l2_dev = &cam->v4l2_dev; |
844 | ||
271922c0 HV |
845 | if (cam->dev_state != 0) |
846 | return -1; | |
847 | ||
626e2acf HV |
848 | strlcpy(v4l2_dev->name, "w9966", sizeof(v4l2_dev->name)); |
849 | ||
850 | if (v4l2_device_register(NULL, v4l2_dev) < 0) { | |
851 | v4l2_err(v4l2_dev, "Could not register v4l2_device\n"); | |
852 | return -1; | |
853 | } | |
271922c0 HV |
854 | cam->pport = port; |
855 | cam->brightness = 128; | |
856 | cam->contrast = 64; | |
857 | cam->color = 64; | |
858 | cam->hue = 0; | |
859 | ||
c1f2b0f2 | 860 | /* Select requested transfer mode */ |
271922c0 HV |
861 | switch (parmode) { |
862 | default: /* Auto-detect (priority: hw-ecp, hw-epp, sw-ecp) */ | |
863 | case 0: | |
864 | if (port->modes & PARPORT_MODE_ECP) | |
865 | cam->ppmode = IEEE1284_MODE_ECP; | |
866 | else if (port->modes & PARPORT_MODE_EPP) | |
867 | cam->ppmode = IEEE1284_MODE_EPP; | |
868 | else | |
869 | cam->ppmode = IEEE1284_MODE_ECP; | |
870 | break; | |
871 | case 1: /* hw- or sw-ecp */ | |
872 | cam->ppmode = IEEE1284_MODE_ECP; | |
873 | break; | |
874 | case 2: /* hw- or sw-epp */ | |
875 | cam->ppmode = IEEE1284_MODE_EPP; | |
c1f2b0f2 | 876 | break; |
271922c0 HV |
877 | } |
878 | ||
c1f2b0f2 | 879 | /* Tell the parport driver that we exists */ |
271922c0 HV |
880 | cam->pdev = parport_register_device(port, "w9966", NULL, NULL, NULL, 0, NULL); |
881 | if (cam->pdev == NULL) { | |
882 | DPRINTF("parport_register_device() failed\n"); | |
883 | return -1; | |
884 | } | |
c1f2b0f2 | 885 | w9966_set_state(cam, W9966_STATE_PDEV, W9966_STATE_PDEV); |
271922c0 HV |
886 | |
887 | w9966_pdev_claim(cam); | |
888 | ||
c1f2b0f2 | 889 | /* Setup a default capture mode */ |
271922c0 HV |
890 | if (w9966_setup(cam, 0, 0, 1023, 1023, 200, 160) != 0) { |
891 | DPRINTF("w9966_setup() failed.\n"); | |
892 | return -1; | |
893 | } | |
894 | ||
895 | w9966_pdev_release(cam); | |
896 | ||
c1f2b0f2 | 897 | /* Fill in the video_device struct and register us to v4l */ |
626e2acf HV |
898 | strlcpy(cam->vdev.name, W9966_DRIVERNAME, sizeof(cam->vdev.name)); |
899 | cam->vdev.v4l2_dev = v4l2_dev; | |
900 | cam->vdev.fops = &w9966_fops; | |
901 | cam->vdev.ioctl_ops = &w9966_ioctl_ops; | |
902 | cam->vdev.release = video_device_release_empty; | |
271922c0 HV |
903 | video_set_drvdata(&cam->vdev, cam); |
904 | ||
626e2acf HV |
905 | mutex_init(&cam->lock); |
906 | ||
271922c0 HV |
907 | if (video_register_device(&cam->vdev, VFL_TYPE_GRABBER, video_nr) < 0) |
908 | return -1; | |
909 | ||
c1f2b0f2 | 910 | w9966_set_state(cam, W9966_STATE_VDEV, W9966_STATE_VDEV); |
271922c0 HV |
911 | |
912 | /* All ok */ | |
626e2acf | 913 | v4l2_info(v4l2_dev, "Found and initialized a webcam on %s.\n", |
c1f2b0f2 | 914 | cam->pport->name); |
271922c0 HV |
915 | return 0; |
916 | } | |
917 | ||
918 | ||
919 | /* Terminate everything gracefully */ | |
626e2acf | 920 | static void w9966_term(struct w9966 *cam) |
271922c0 | 921 | { |
c1f2b0f2 HV |
922 | /* Unregister from v4l */ |
923 | if (w9966_get_state(cam, W9966_STATE_VDEV, W9966_STATE_VDEV)) { | |
271922c0 | 924 | video_unregister_device(&cam->vdev); |
c1f2b0f2 | 925 | w9966_set_state(cam, W9966_STATE_VDEV, 0); |
271922c0 HV |
926 | } |
927 | ||
c1f2b0f2 HV |
928 | /* Terminate from IEEE1284 mode and release pdev block */ |
929 | if (w9966_get_state(cam, W9966_STATE_PDEV, W9966_STATE_PDEV)) { | |
271922c0 HV |
930 | w9966_pdev_claim(cam); |
931 | parport_negotiate(cam->pport, IEEE1284_MODE_COMPAT); | |
932 | w9966_pdev_release(cam); | |
933 | } | |
934 | ||
c1f2b0f2 HV |
935 | /* Unregister from parport */ |
936 | if (w9966_get_state(cam, W9966_STATE_PDEV, W9966_STATE_PDEV)) { | |
271922c0 | 937 | parport_unregister_device(cam->pdev); |
c1f2b0f2 | 938 | w9966_set_state(cam, W9966_STATE_PDEV, 0); |
271922c0 | 939 | } |
bd5ba3ba | 940 | memset(cam, 0, sizeof(*cam)); |
271922c0 HV |
941 | } |
942 | ||
1da177e4 | 943 | |
4bfdd586 | 944 | /* Called once for every parport on init */ |
1da177e4 LT |
945 | static void w9966_attach(struct parport *port) |
946 | { | |
947 | int i; | |
d56410e0 | 948 | |
4bfdd586 HV |
949 | for (i = 0; i < W9966_MAXCAMS; i++) { |
950 | if (w9966_cams[i].dev_state != 0) /* Cam is already assigned */ | |
1da177e4 | 951 | continue; |
4bfdd586 | 952 | if (strcmp(pardev[i], "aggressive") == 0 || strcmp(pardev[i], port->name) == 0) { |
1da177e4 | 953 | if (w9966_init(&w9966_cams[i], port) != 0) |
4bfdd586 HV |
954 | w9966_term(&w9966_cams[i]); |
955 | break; /* return */ | |
1da177e4 LT |
956 | } |
957 | } | |
958 | } | |
959 | ||
4bfdd586 | 960 | /* Called once for every parport on termination */ |
1da177e4 LT |
961 | static void w9966_detach(struct parport *port) |
962 | { | |
963 | int i; | |
4bfdd586 | 964 | |
1da177e4 | 965 | for (i = 0; i < W9966_MAXCAMS; i++) |
4bfdd586 HV |
966 | if (w9966_cams[i].dev_state != 0 && w9966_cams[i].pport == port) |
967 | w9966_term(&w9966_cams[i]); | |
1da177e4 LT |
968 | } |
969 | ||
970 | ||
971 | static struct parport_driver w9966_ppd = { | |
972 | .name = W9966_DRIVERNAME, | |
973 | .attach = w9966_attach, | |
974 | .detach = w9966_detach, | |
975 | }; | |
976 | ||
4bfdd586 | 977 | /* Module entry point */ |
1da177e4 LT |
978 | static int __init w9966_mod_init(void) |
979 | { | |
980 | int i; | |
4bfdd586 | 981 | |
1da177e4 LT |
982 | for (i = 0; i < W9966_MAXCAMS; i++) |
983 | w9966_cams[i].dev_state = 0; | |
984 | ||
985 | return parport_register_driver(&w9966_ppd); | |
986 | } | |
987 | ||
4bfdd586 | 988 | /* Module cleanup */ |
1da177e4 LT |
989 | static void __exit w9966_mod_term(void) |
990 | { | |
991 | parport_unregister_driver(&w9966_ppd); | |
992 | } | |
993 | ||
994 | module_init(w9966_mod_init); | |
995 | module_exit(w9966_mod_term); |