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Commit | Line | Data |
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d56410e0 | 1 | /* |
1da177e4 LT |
2 | * vpx3220a, vpx3216b & vpx3214c video decoder driver version 0.0.1 |
3 | * | |
4 | * Copyright (C) 2001 Laurent Pinchart <lpinchart@freegates.be> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
19 | */ | |
20 | ||
21 | #include <linux/module.h> | |
22 | #include <linux/init.h> | |
23 | #include <linux/delay.h> | |
24 | #include <linux/types.h> | |
25 | #include <linux/slab.h> | |
26 | ||
27 | #include <linux/byteorder/swab.h> | |
28 | ||
29 | #include <asm/io.h> | |
30 | #include <asm/uaccess.h> | |
31 | ||
32 | #include <linux/i2c.h> | |
1da177e4 LT |
33 | |
34 | #define I2C_NAME(x) (x)->name | |
35 | ||
36 | #include <linux/videodev.h> | |
5e87efa3 | 37 | #include <media/v4l2-common.h> |
1da177e4 LT |
38 | #include <linux/video_decoder.h> |
39 | ||
40 | #define I2C_VPX3220 0x86 | |
41 | #define VPX3220_DEBUG KERN_DEBUG "vpx3220: " | |
42 | ||
43 | static int debug = 0; | |
44 | module_param(debug, int, 0); | |
45 | MODULE_PARM_DESC(debug, "Debug level (0-1)"); | |
46 | ||
47 | #define dprintk(num, format, args...) \ | |
48 | do { \ | |
49 | if (debug >= num) \ | |
50 | printk(format, ##args); \ | |
51 | } while (0) | |
52 | ||
53 | #define VPX_TIMEOUT_COUNT 10 | |
54 | ||
55 | /* ----------------------------------------------------------------------- */ | |
56 | ||
57 | struct vpx3220 { | |
58 | unsigned char reg[255]; | |
59 | ||
60 | int norm; | |
61 | int input; | |
62 | int enable; | |
63 | int bright; | |
64 | int contrast; | |
65 | int hue; | |
66 | int sat; | |
67 | }; | |
68 | ||
69 | static char *inputs[] = { "internal", "composite", "svideo" }; | |
70 | ||
71 | /* ----------------------------------------------------------------------- */ | |
72 | static inline int | |
73 | vpx3220_write (struct i2c_client *client, | |
74 | u8 reg, | |
75 | u8 value) | |
76 | { | |
77 | struct vpx3220 *decoder = i2c_get_clientdata(client); | |
78 | ||
79 | decoder->reg[reg] = value; | |
80 | return i2c_smbus_write_byte_data(client, reg, value); | |
81 | } | |
82 | ||
83 | static inline int | |
84 | vpx3220_read (struct i2c_client *client, | |
85 | u8 reg) | |
86 | { | |
87 | return i2c_smbus_read_byte_data(client, reg); | |
88 | } | |
89 | ||
90 | static int | |
91 | vpx3220_fp_status (struct i2c_client *client) | |
92 | { | |
93 | unsigned char status; | |
94 | unsigned int i; | |
95 | ||
96 | for (i = 0; i < VPX_TIMEOUT_COUNT; i++) { | |
97 | status = vpx3220_read(client, 0x29); | |
98 | ||
99 | if (!(status & 4)) | |
100 | return 0; | |
101 | ||
102 | udelay(10); | |
103 | ||
104 | if (need_resched()) | |
105 | cond_resched(); | |
106 | } | |
107 | ||
108 | return -1; | |
109 | } | |
110 | ||
111 | static int | |
112 | vpx3220_fp_write (struct i2c_client *client, | |
113 | u8 fpaddr, | |
114 | u16 data) | |
115 | { | |
116 | /* Write the 16-bit address to the FPWR register */ | |
117 | if (i2c_smbus_write_word_data(client, 0x27, swab16(fpaddr)) == -1) { | |
118 | dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__); | |
119 | return -1; | |
120 | } | |
121 | ||
122 | if (vpx3220_fp_status(client) < 0) | |
123 | return -1; | |
124 | ||
125 | /* Write the 16-bit data to the FPDAT register */ | |
126 | if (i2c_smbus_write_word_data(client, 0x28, swab16(data)) == -1) { | |
127 | dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__); | |
128 | return -1; | |
129 | } | |
130 | ||
131 | return 0; | |
132 | } | |
133 | ||
134 | static u16 | |
135 | vpx3220_fp_read (struct i2c_client *client, | |
136 | u16 fpaddr) | |
137 | { | |
138 | s16 data; | |
139 | ||
140 | /* Write the 16-bit address to the FPRD register */ | |
141 | if (i2c_smbus_write_word_data(client, 0x26, swab16(fpaddr)) == -1) { | |
142 | dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__); | |
143 | return -1; | |
144 | } | |
145 | ||
146 | if (vpx3220_fp_status(client) < 0) | |
147 | return -1; | |
148 | ||
149 | /* Read the 16-bit data from the FPDAT register */ | |
150 | data = i2c_smbus_read_word_data(client, 0x28); | |
151 | if (data == -1) { | |
152 | dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__); | |
153 | return -1; | |
154 | } | |
155 | ||
156 | return swab16(data); | |
157 | } | |
158 | ||
159 | static int | |
160 | vpx3220_write_block (struct i2c_client *client, | |
161 | const u8 *data, | |
162 | unsigned int len) | |
163 | { | |
164 | u8 reg; | |
165 | int ret = -1; | |
166 | ||
167 | while (len >= 2) { | |
168 | reg = *data++; | |
169 | if ((ret = | |
170 | vpx3220_write(client, reg, *data++)) < 0) | |
171 | break; | |
172 | len -= 2; | |
173 | } | |
174 | ||
175 | return ret; | |
176 | } | |
177 | ||
178 | static int | |
179 | vpx3220_write_fp_block (struct i2c_client *client, | |
d56410e0 MCC |
180 | const u16 *data, |
181 | unsigned int len) | |
1da177e4 LT |
182 | { |
183 | u8 reg; | |
184 | int ret = 0; | |
185 | ||
186 | while (len > 1) { | |
187 | reg = *data++; | |
188 | ret |= vpx3220_fp_write(client, reg, *data++); | |
189 | len -= 2; | |
190 | } | |
191 | ||
192 | return ret; | |
193 | } | |
194 | ||
195 | /* ---------------------------------------------------------------------- */ | |
196 | ||
197 | static const unsigned short init_ntsc[] = { | |
198 | 0x1c, 0x00, /* NTSC tint angle */ | |
199 | 0x88, 17, /* Window 1 vertical */ | |
200 | 0x89, 240, /* Vertical lines in */ | |
201 | 0x8a, 240, /* Vertical lines out */ | |
202 | 0x8b, 000, /* Horizontal begin */ | |
203 | 0x8c, 640, /* Horizontal length */ | |
204 | 0x8d, 640, /* Number of pixels */ | |
205 | 0x8f, 0xc00, /* Disable window 2 */ | |
9b3acc21 | 206 | 0xf0, 0x73, /* 13.5 MHz transport, Forced |
1da177e4 LT |
207 | * mode, latch windows */ |
208 | 0xf2, 0x13, /* NTSC M, composite input */ | |
209 | 0xe7, 0x1e1, /* Enable vertical standard | |
210 | * locking @ 240 lines */ | |
211 | }; | |
212 | ||
213 | static const unsigned short init_pal[] = { | |
214 | 0x88, 23, /* Window 1 vertical begin */ | |
9b3acc21 | 215 | 0x89, 288, /* Vertical lines in (16 lines |
1da177e4 | 216 | * skipped by the VFE) */ |
9b3acc21 | 217 | 0x8a, 288, /* Vertical lines out (16 lines |
1da177e4 LT |
218 | * skipped by the VFE) */ |
219 | 0x8b, 16, /* Horizontal begin */ | |
220 | 0x8c, 768, /* Horizontal length */ | |
221 | 0x8d, 784, /* Number of pixels | |
222 | * Must be >= Horizontal begin + Horizontal length */ | |
223 | 0x8f, 0xc00, /* Disable window 2 */ | |
9b3acc21 | 224 | 0xf0, 0x77, /* 13.5 MHz transport, Forced |
1da177e4 LT |
225 | * mode, latch windows */ |
226 | 0xf2, 0x3d1, /* PAL B,G,H,I, composite input */ | |
9b3acc21 | 227 | 0xe7, 0x241, /* PAL/SECAM set to 288 lines */ |
1da177e4 LT |
228 | }; |
229 | ||
230 | static const unsigned short init_secam[] = { | |
9b3acc21 RB |
231 | 0x88, 23, /* Window 1 vertical begin */ |
232 | 0x89, 288, /* Vertical lines in (16 lines | |
1da177e4 | 233 | * skipped by the VFE) */ |
9b3acc21 | 234 | 0x8a, 288, /* Vertical lines out (16 lines |
1da177e4 LT |
235 | * skipped by the VFE) */ |
236 | 0x8b, 16, /* Horizontal begin */ | |
237 | 0x8c, 768, /* Horizontal length */ | |
238 | 0x8d, 784, /* Number of pixels | |
239 | * Must be >= Horizontal begin + Horizontal length */ | |
240 | 0x8f, 0xc00, /* Disable window 2 */ | |
9b3acc21 | 241 | 0xf0, 0x77, /* 13.5 MHz transport, Forced |
1da177e4 LT |
242 | * mode, latch windows */ |
243 | 0xf2, 0x3d5, /* SECAM, composite input */ | |
9b3acc21 | 244 | 0xe7, 0x241, /* PAL/SECAM set to 288 lines */ |
1da177e4 LT |
245 | }; |
246 | ||
247 | static const unsigned char init_common[] = { | |
248 | 0xf2, 0x00, /* Disable all outputs */ | |
249 | 0x33, 0x0d, /* Luma : VIN2, Chroma : CIN | |
250 | * (clamp off) */ | |
251 | 0xd8, 0xa8, /* HREF/VREF active high, VREF | |
252 | * pulse = 2, Odd/Even flag */ | |
253 | 0x20, 0x03, /* IF compensation 0dB/oct */ | |
254 | 0xe0, 0xff, /* Open up all comparators */ | |
255 | 0xe1, 0x00, | |
256 | 0xe2, 0x7f, | |
257 | 0xe3, 0x80, | |
258 | 0xe4, 0x7f, | |
259 | 0xe5, 0x80, | |
260 | 0xe6, 0x00, /* Brightness set to 0 */ | |
261 | 0xe7, 0xe0, /* Contrast to 1.0, noise shaping | |
262 | * 10 to 8 2-bit error diffusion */ | |
263 | 0xe8, 0xf8, /* YUV422, CbCr binary offset, | |
264 | * ... (p.32) */ | |
265 | 0xea, 0x18, /* LLC2 connected, output FIFO | |
266 | * reset with VACTintern */ | |
267 | 0xf0, 0x8a, /* Half full level to 10, bus | |
268 | * shuffler [7:0, 23:16, 15:8] */ | |
269 | 0xf1, 0x18, /* Single clock, sync mode, no | |
270 | * FE delay, no HLEN counter */ | |
271 | 0xf8, 0x12, /* Port A, PIXCLK, HF# & FE# | |
272 | * strength to 2 */ | |
273 | 0xf9, 0x24, /* Port B, HREF, VREF, PREF & | |
274 | * ALPHA strength to 4 */ | |
275 | }; | |
276 | ||
277 | static const unsigned short init_fp[] = { | |
278 | 0x59, 0, | |
279 | 0xa0, 2070, /* ACC reference */ | |
280 | 0xa3, 0, | |
281 | 0xa4, 0, | |
282 | 0xa8, 30, | |
283 | 0xb2, 768, | |
284 | 0xbe, 27, | |
285 | 0x58, 0, | |
286 | 0x26, 0, | |
287 | 0x4b, 0x298, /* PLL gain */ | |
288 | }; | |
289 | ||
290 | static void | |
291 | vpx3220_dump_i2c (struct i2c_client *client) | |
292 | { | |
293 | int len = sizeof(init_common); | |
294 | const unsigned char *data = init_common; | |
295 | ||
296 | while (len > 1) { | |
297 | dprintk(1, | |
298 | KERN_DEBUG "vpx3216b i2c reg 0x%02x data 0x%02x\n", | |
299 | *data, vpx3220_read(client, *data)); | |
300 | data += 2; | |
301 | len -= 2; | |
302 | } | |
303 | } | |
304 | ||
305 | static int | |
306 | vpx3220_command (struct i2c_client *client, | |
307 | unsigned int cmd, | |
308 | void *arg) | |
309 | { | |
310 | struct vpx3220 *decoder = i2c_get_clientdata(client); | |
311 | ||
312 | switch (cmd) { | |
313 | case 0: | |
314 | { | |
315 | vpx3220_write_block(client, init_common, | |
316 | sizeof(init_common)); | |
317 | vpx3220_write_fp_block(client, init_fp, | |
318 | sizeof(init_fp) >> 1); | |
319 | switch (decoder->norm) { | |
d56410e0 | 320 | |
1da177e4 LT |
321 | case VIDEO_MODE_NTSC: |
322 | vpx3220_write_fp_block(client, init_ntsc, | |
323 | sizeof(init_ntsc) >> 1); | |
324 | break; | |
325 | ||
326 | case VIDEO_MODE_PAL: | |
327 | vpx3220_write_fp_block(client, init_pal, | |
d56410e0 | 328 | sizeof(init_pal) >> 1); |
1da177e4 LT |
329 | break; |
330 | case VIDEO_MODE_SECAM: | |
331 | vpx3220_write_fp_block(client, init_secam, | |
332 | sizeof(init_secam) >> 1); | |
333 | break; | |
334 | default: | |
335 | vpx3220_write_fp_block(client, init_pal, | |
d56410e0 | 336 | sizeof(init_pal) >> 1); |
1da177e4 LT |
337 | break; |
338 | } | |
d56410e0 | 339 | } |
1da177e4 LT |
340 | break; |
341 | ||
342 | case DECODER_DUMP: | |
343 | { | |
344 | vpx3220_dump_i2c(client); | |
345 | } | |
346 | break; | |
347 | ||
348 | case DECODER_GET_CAPABILITIES: | |
349 | { | |
350 | struct video_decoder_capability *cap = arg; | |
351 | ||
352 | dprintk(1, KERN_DEBUG "%s: DECODER_GET_CAPABILITIES\n", | |
353 | I2C_NAME(client)); | |
354 | ||
355 | cap->flags = VIDEO_DECODER_PAL | | |
356 | VIDEO_DECODER_NTSC | | |
357 | VIDEO_DECODER_SECAM | | |
358 | VIDEO_DECODER_AUTO | | |
359 | VIDEO_DECODER_CCIR; | |
360 | cap->inputs = 3; | |
361 | cap->outputs = 1; | |
362 | } | |
363 | break; | |
364 | ||
365 | case DECODER_GET_STATUS: | |
366 | { | |
367 | int res = 0, status; | |
368 | ||
369 | dprintk(1, KERN_INFO "%s: DECODER_GET_STATUS\n", | |
370 | I2C_NAME(client)); | |
371 | ||
372 | status = vpx3220_fp_read(client, 0x0f3); | |
373 | ||
374 | dprintk(1, KERN_INFO "%s: status: 0x%04x\n", I2C_NAME(client), | |
375 | status); | |
376 | ||
377 | if (status < 0) | |
378 | return status; | |
379 | ||
380 | if ((status & 0x20) == 0) { | |
381 | res |= DECODER_STATUS_GOOD | DECODER_STATUS_COLOR; | |
382 | ||
383 | switch (status & 0x18) { | |
384 | ||
385 | case 0x00: | |
386 | case 0x10: | |
387 | case 0x14: | |
388 | case 0x18: | |
389 | res |= DECODER_STATUS_PAL; | |
390 | break; | |
391 | ||
392 | case 0x08: | |
393 | res |= DECODER_STATUS_SECAM; | |
394 | break; | |
395 | ||
396 | case 0x04: | |
397 | case 0x0c: | |
398 | case 0x1c: | |
399 | res |= DECODER_STATUS_NTSC; | |
400 | break; | |
401 | } | |
402 | } | |
403 | ||
404 | *(int *) arg = res; | |
405 | } | |
406 | break; | |
407 | ||
408 | case DECODER_SET_NORM: | |
409 | { | |
410 | int *iarg = arg, data; | |
de21eb63 RB |
411 | int temp_input; |
412 | ||
413 | /* Here we back up the input selection because it gets | |
414 | overwritten when we fill the registers with the | |
d56410e0 | 415 | choosen video norm */ |
de21eb63 | 416 | temp_input = vpx3220_fp_read(client, 0xf2); |
1da177e4 LT |
417 | |
418 | dprintk(1, KERN_DEBUG "%s: DECODER_SET_NORM %d\n", | |
419 | I2C_NAME(client), *iarg); | |
420 | switch (*iarg) { | |
421 | ||
422 | case VIDEO_MODE_NTSC: | |
423 | vpx3220_write_fp_block(client, init_ntsc, | |
424 | sizeof(init_ntsc) >> 1); | |
425 | dprintk(1, KERN_INFO "%s: norm switched to NTSC\n", | |
426 | I2C_NAME(client)); | |
427 | break; | |
428 | ||
429 | case VIDEO_MODE_PAL: | |
430 | vpx3220_write_fp_block(client, init_pal, | |
431 | sizeof(init_pal) >> 1); | |
432 | dprintk(1, KERN_INFO "%s: norm switched to PAL\n", | |
433 | I2C_NAME(client)); | |
434 | break; | |
435 | ||
436 | case VIDEO_MODE_SECAM: | |
437 | vpx3220_write_fp_block(client, init_secam, | |
438 | sizeof(init_secam) >> 1); | |
439 | dprintk(1, KERN_INFO "%s: norm switched to SECAM\n", | |
440 | I2C_NAME(client)); | |
441 | break; | |
442 | ||
443 | case VIDEO_MODE_AUTO: | |
444 | /* FIXME This is only preliminary support */ | |
445 | data = vpx3220_fp_read(client, 0xf2) & 0x20; | |
446 | vpx3220_fp_write(client, 0xf2, 0x00c0 | data); | |
447 | dprintk(1, KERN_INFO "%s: norm switched to Auto\n", | |
448 | I2C_NAME(client)); | |
449 | break; | |
450 | ||
451 | default: | |
452 | return -EINVAL; | |
453 | ||
454 | } | |
455 | decoder->norm = *iarg; | |
de21eb63 RB |
456 | |
457 | /* And here we set the backed up video input again */ | |
458 | vpx3220_fp_write(client, 0xf2, temp_input | 0x0010); | |
459 | udelay(10); | |
1da177e4 LT |
460 | } |
461 | break; | |
462 | ||
463 | case DECODER_SET_INPUT: | |
464 | { | |
465 | int *iarg = arg, data; | |
466 | ||
467 | /* RJ: *iarg = 0: ST8 (PCTV) input | |
468 | *iarg = 1: COMPOSITE input | |
469 | *iarg = 2: SVHS input */ | |
470 | ||
471 | const int input[3][2] = { | |
472 | {0x0c, 0}, | |
473 | {0x0d, 0}, | |
474 | {0x0e, 1} | |
475 | }; | |
476 | ||
477 | if (*iarg < 0 || *iarg > 2) | |
478 | return -EINVAL; | |
479 | ||
480 | dprintk(1, KERN_INFO "%s: input switched to %s\n", | |
481 | I2C_NAME(client), inputs[*iarg]); | |
482 | ||
483 | vpx3220_write(client, 0x33, input[*iarg][0]); | |
484 | ||
485 | data = vpx3220_fp_read(client, 0xf2) & ~(0x0020); | |
486 | if (data < 0) | |
487 | return data; | |
488 | /* 0x0010 is required to latch the setting */ | |
489 | vpx3220_fp_write(client, 0xf2, | |
490 | data | (input[*iarg][1] << 5) | 0x0010); | |
491 | ||
492 | udelay(10); | |
493 | } | |
494 | break; | |
495 | ||
496 | case DECODER_SET_OUTPUT: | |
497 | { | |
498 | int *iarg = arg; | |
499 | ||
500 | /* not much choice of outputs */ | |
501 | if (*iarg != 0) { | |
502 | return -EINVAL; | |
503 | } | |
504 | } | |
505 | break; | |
506 | ||
507 | case DECODER_ENABLE_OUTPUT: | |
508 | { | |
509 | int *iarg = arg; | |
510 | ||
511 | dprintk(1, KERN_DEBUG "%s: DECODER_ENABLE_OUTPUT %d\n", | |
512 | I2C_NAME(client), *iarg); | |
513 | ||
514 | vpx3220_write(client, 0xf2, (*iarg ? 0x1b : 0x00)); | |
515 | } | |
516 | break; | |
517 | ||
518 | case DECODER_SET_PICTURE: | |
519 | { | |
520 | struct video_picture *pic = arg; | |
521 | ||
522 | if (decoder->bright != pic->brightness) { | |
523 | /* We want -128 to 128 we get 0-65535 */ | |
524 | decoder->bright = pic->brightness; | |
525 | vpx3220_write(client, 0xe6, | |
526 | (decoder->bright - 32768) >> 8); | |
527 | } | |
528 | if (decoder->contrast != pic->contrast) { | |
529 | /* We want 0 to 64 we get 0-65535 */ | |
530 | /* Bit 7 and 8 is for noise shaping */ | |
531 | decoder->contrast = pic->contrast; | |
532 | vpx3220_write(client, 0xe7, | |
533 | (decoder->contrast >> 10) + 192); | |
534 | } | |
535 | if (decoder->sat != pic->colour) { | |
536 | /* We want 0 to 4096 we get 0-65535 */ | |
537 | decoder->sat = pic->colour; | |
538 | vpx3220_fp_write(client, 0xa0, | |
539 | decoder->sat >> 4); | |
540 | } | |
541 | if (decoder->hue != pic->hue) { | |
542 | /* We want -512 to 512 we get 0-65535 */ | |
543 | decoder->hue = pic->hue; | |
544 | vpx3220_fp_write(client, 0x1c, | |
545 | ((decoder->hue - 32768) >> 6) & 0xFFF); | |
546 | } | |
547 | } | |
548 | break; | |
549 | ||
550 | default: | |
551 | return -EINVAL; | |
552 | } | |
553 | ||
554 | return 0; | |
555 | } | |
556 | ||
557 | static int | |
558 | vpx3220_init_client (struct i2c_client *client) | |
559 | { | |
560 | vpx3220_write_block(client, init_common, sizeof(init_common)); | |
561 | vpx3220_write_fp_block(client, init_fp, sizeof(init_fp) >> 1); | |
562 | /* Default to PAL */ | |
563 | vpx3220_write_fp_block(client, init_pal, sizeof(init_pal) >> 1); | |
564 | ||
565 | return 0; | |
566 | } | |
567 | ||
568 | /* ----------------------------------------------------------------------- | |
c84e6036 | 569 | * Client management code |
1da177e4 LT |
570 | */ |
571 | ||
572 | /* | |
573 | * Generic i2c probe | |
574 | * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' | |
575 | */ | |
576 | static unsigned short normal_i2c[] = | |
577 | { I2C_VPX3220 >> 1, (I2C_VPX3220 >> 1) + 4, | |
578 | I2C_CLIENT_END | |
579 | }; | |
1da177e4 | 580 | |
68cc9d0b | 581 | static unsigned short ignore = I2C_CLIENT_END; |
d56410e0 | 582 | |
1da177e4 LT |
583 | static struct i2c_client_address_data addr_data = { |
584 | .normal_i2c = normal_i2c, | |
68cc9d0b JD |
585 | .probe = &ignore, |
586 | .ignore = &ignore, | |
1da177e4 LT |
587 | }; |
588 | ||
589 | static struct i2c_driver vpx3220_i2c_driver; | |
590 | ||
591 | static int | |
592 | vpx3220_detach_client (struct i2c_client *client) | |
593 | { | |
594 | struct vpx3220 *decoder = i2c_get_clientdata(client); | |
595 | int err; | |
596 | ||
597 | err = i2c_detach_client(client); | |
598 | if (err) { | |
599 | return err; | |
600 | } | |
601 | ||
602 | kfree(decoder); | |
603 | kfree(client); | |
604 | ||
605 | return 0; | |
606 | } | |
607 | ||
608 | static int | |
609 | vpx3220_detect_client (struct i2c_adapter *adapter, | |
610 | int address, | |
611 | int kind) | |
612 | { | |
613 | int err; | |
614 | struct i2c_client *client; | |
615 | struct vpx3220 *decoder; | |
616 | ||
617 | dprintk(1, VPX3220_DEBUG "%s\n", __func__); | |
618 | ||
619 | /* Check if the adapter supports the needed features */ | |
620 | if (!i2c_check_functionality | |
621 | (adapter, I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA)) | |
622 | return 0; | |
623 | ||
7408187d | 624 | client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); |
1da177e4 LT |
625 | if (client == NULL) { |
626 | return -ENOMEM; | |
627 | } | |
628 | ||
1da177e4 LT |
629 | client->addr = address; |
630 | client->adapter = adapter; | |
631 | client->driver = &vpx3220_i2c_driver; | |
1da177e4 LT |
632 | |
633 | /* Check for manufacture ID and part number */ | |
634 | if (kind < 0) { | |
635 | u8 id; | |
636 | u16 pn; | |
637 | ||
638 | id = vpx3220_read(client, 0x00); | |
639 | if (id != 0xec) { | |
640 | dprintk(1, | |
641 | KERN_INFO | |
642 | "vpx3220_attach: Wrong manufacturer ID (0x%02x)\n", | |
643 | id); | |
644 | kfree(client); | |
645 | return 0; | |
646 | } | |
647 | ||
648 | pn = (vpx3220_read(client, 0x02) << 8) + | |
649 | vpx3220_read(client, 0x01); | |
650 | switch (pn) { | |
651 | case 0x4680: | |
652 | strlcpy(I2C_NAME(client), "vpx3220a", | |
653 | sizeof(I2C_NAME(client))); | |
654 | break; | |
655 | case 0x4260: | |
656 | strlcpy(I2C_NAME(client), "vpx3216b", | |
657 | sizeof(I2C_NAME(client))); | |
658 | break; | |
659 | case 0x4280: | |
660 | strlcpy(I2C_NAME(client), "vpx3214c", | |
661 | sizeof(I2C_NAME(client))); | |
662 | break; | |
663 | default: | |
664 | dprintk(1, | |
d56410e0 | 665 | KERN_INFO |
1da177e4 LT |
666 | "%s: Wrong part number (0x%04x)\n", |
667 | __func__, pn); | |
668 | kfree(client); | |
669 | return 0; | |
670 | } | |
671 | } else { | |
672 | strlcpy(I2C_NAME(client), "forced vpx32xx", | |
673 | sizeof(I2C_NAME(client))); | |
674 | } | |
675 | ||
7408187d | 676 | decoder = kzalloc(sizeof(struct vpx3220), GFP_KERNEL); |
1da177e4 LT |
677 | if (decoder == NULL) { |
678 | kfree(client); | |
679 | return -ENOMEM; | |
680 | } | |
1da177e4 LT |
681 | decoder->norm = VIDEO_MODE_PAL; |
682 | decoder->input = 0; | |
683 | decoder->enable = 1; | |
684 | decoder->bright = 32768; | |
685 | decoder->contrast = 32768; | |
686 | decoder->hue = 32768; | |
687 | decoder->sat = 32768; | |
688 | i2c_set_clientdata(client, decoder); | |
689 | ||
690 | err = i2c_attach_client(client); | |
691 | if (err) { | |
692 | kfree(client); | |
693 | kfree(decoder); | |
694 | return err; | |
695 | } | |
696 | ||
697 | dprintk(1, KERN_INFO "%s: vpx32xx client found at address 0x%02x\n", | |
698 | I2C_NAME(client), client->addr << 1); | |
699 | ||
700 | vpx3220_init_client(client); | |
701 | ||
702 | return 0; | |
703 | } | |
704 | ||
705 | static int | |
706 | vpx3220_attach_adapter (struct i2c_adapter *adapter) | |
707 | { | |
708 | int ret; | |
709 | ||
710 | ret = i2c_probe(adapter, &addr_data, &vpx3220_detect_client); | |
711 | dprintk(1, VPX3220_DEBUG "%s: i2c_probe returned %d\n", | |
712 | __func__, ret); | |
713 | return ret; | |
714 | } | |
715 | ||
716 | /* ----------------------------------------------------------------------- | |
717 | * Driver initialization and cleanup code | |
718 | */ | |
719 | ||
720 | static struct i2c_driver vpx3220_i2c_driver = { | |
604f28e2 | 721 | .driver = { |
604f28e2 LR |
722 | .name = "vpx3220", |
723 | }, | |
1da177e4 LT |
724 | |
725 | .id = I2C_DRIVERID_VPX3220, | |
1da177e4 LT |
726 | |
727 | .attach_adapter = vpx3220_attach_adapter, | |
728 | .detach_client = vpx3220_detach_client, | |
729 | .command = vpx3220_command, | |
730 | }; | |
731 | ||
732 | static int __init | |
733 | vpx3220_init (void) | |
734 | { | |
735 | return i2c_add_driver(&vpx3220_i2c_driver); | |
736 | } | |
737 | ||
738 | static void __exit | |
739 | vpx3220_cleanup (void) | |
740 | { | |
741 | i2c_del_driver(&vpx3220_i2c_driver); | |
742 | } | |
743 | ||
744 | module_init(vpx3220_init); | |
745 | module_exit(vpx3220_cleanup); | |
746 | ||
6e40773a | 747 | MODULE_DESCRIPTION("vpx3220a/vpx3216b/vpx3214c video decoder driver"); |
1da177e4 LT |
748 | MODULE_AUTHOR("Laurent Pinchart"); |
749 | MODULE_LICENSE("GPL"); |