Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * For the STS-Thompson TDA7432 audio processor chip | |
3 | * | |
4 | * Handles audio functions: volume, balance, tone, loudness | |
5 | * This driver will not complain if used with any | |
6 | * other i2c device with the same address. | |
7 | * | |
8 | * Muting and tone control by Jonathan Isom <jisom@ematic.com> | |
9 | * | |
10 | * Copyright (c) 2000 Eric Sandeen <eric_sandeen@bigfoot.com> | |
7a00d45c | 11 | * Copyright (c) 2006 Mauro Carvalho Chehab <mchehab@infradead.org> |
1da177e4 LT |
12 | * This code is placed under the terms of the GNU General Public License |
13 | * Based on tda9855.c by Steve VanDeBogart (vandebo@uclink.berkeley.edu) | |
14 | * Which was based on tda8425.c by Greg Alexander (c) 1998 | |
15 | * | |
16 | * OPTIONS: | |
17 | * debug - set to 1 if you'd like to see debug messages | |
18 | * set to 2 if you'd like to be inundated with debug messages | |
19 | * | |
20 | * loudness - set between 0 and 15 for varying degrees of loudness effect | |
21 | * | |
22 | * maxvol - set maximium volume to +20db (1), default is 0db(0) | |
23 | * | |
24 | * | |
25 | * Revision: 0.7 - maxvol module parm to set maximium volume 0db or +20db | |
26 | * store if muted so we can return it | |
27 | * change balance only if flaged to | |
28 | * Revision: 0.6 - added tone controls | |
29 | * Revision: 0.5 - Fixed odd balance problem | |
30 | * Revision: 0.4 - added muting | |
31 | * Revision: 0.3 - Fixed silly reversed volume controls. :) | |
32 | * Revision: 0.2 - Cleaned up #defines | |
33 | * fixed volume control | |
34 | * Added I2C_DRIVERID_TDA7432 | |
35 | * added loudness insmod control | |
36 | * Revision: 0.1 - initial version | |
37 | */ | |
38 | ||
39 | #include <linux/module.h> | |
40 | #include <linux/init.h> | |
41 | #include <linux/kernel.h> | |
1da177e4 LT |
42 | #include <linux/string.h> |
43 | #include <linux/timer.h> | |
44 | #include <linux/delay.h> | |
45 | #include <linux/errno.h> | |
46 | #include <linux/slab.h> | |
33b687cf | 47 | #include <linux/videodev2.h> |
1da177e4 | 48 | #include <linux/i2c.h> |
1da177e4 | 49 | |
d531305a | 50 | #include <media/v4l2-device.h> |
35ea11ff | 51 | #include <media/v4l2-ioctl.h> |
fa3fcceb | 52 | #include <media/i2c-addr.h> |
267ea2a9 | 53 | #include <media/v4l2-i2c-drv.h> |
1da177e4 LT |
54 | |
55 | #ifndef VIDEO_AUDIO_BALANCE | |
56 | # define VIDEO_AUDIO_BALANCE 32 | |
57 | #endif | |
58 | ||
59 | MODULE_AUTHOR("Eric Sandeen <eric_sandeen@bigfoot.com>"); | |
60 | MODULE_DESCRIPTION("bttv driver for the tda7432 audio processor chip"); | |
61 | MODULE_LICENSE("GPL"); | |
62 | ||
63 | static int maxvol; | |
64 | static int loudness; /* disable loudness by default */ | |
65 | static int debug; /* insmod parameter */ | |
66 | module_param(debug, int, S_IRUGO | S_IWUSR); | |
67 | module_param(loudness, int, S_IRUGO); | |
68 | MODULE_PARM_DESC(maxvol,"Set maximium volume to +20db (0), default is 0db(1)"); | |
69 | module_param(maxvol, int, S_IRUGO | S_IWUSR); | |
70 | ||
71 | ||
1da177e4 LT |
72 | |
73 | /* Structure of address and subaddresses for the tda7432 */ | |
74 | ||
75 | struct tda7432 { | |
d531305a | 76 | struct v4l2_subdev sd; |
1da177e4 LT |
77 | int addr; |
78 | int input; | |
79 | int volume; | |
80 | int muted; | |
81 | int bass, treble; | |
82 | int lf, lr, rf, rr; | |
83 | int loud; | |
1da177e4 | 84 | }; |
d531305a HV |
85 | |
86 | static inline struct tda7432 *to_state(struct v4l2_subdev *sd) | |
87 | { | |
88 | return container_of(sd, struct tda7432, sd); | |
89 | } | |
1da177e4 | 90 | |
1da177e4 LT |
91 | /* The TDA7432 is made by STS-Thompson |
92 | * http://www.st.com | |
93 | * http://us.st.com/stonline/books/pdf/docs/4056.pdf | |
94 | * | |
95 | * TDA7432: I2C-bus controlled basic audio processor | |
96 | * | |
97 | * The TDA7432 controls basic audio functions like volume, balance, | |
98 | * and tone control (including loudness). It also has four channel | |
99 | * output (for front and rear). Since most vidcap cards probably | |
100 | * don't have 4 channel output, this driver will set front & rear | |
101 | * together (no independent control). | |
102 | */ | |
103 | ||
104 | /* Subaddresses for TDA7432 */ | |
105 | ||
106 | #define TDA7432_IN 0x00 /* Input select */ | |
107 | #define TDA7432_VL 0x01 /* Volume */ | |
108 | #define TDA7432_TN 0x02 /* Bass, Treble (Tone) */ | |
109 | #define TDA7432_LF 0x03 /* Attenuation LF (Left Front) */ | |
110 | #define TDA7432_LR 0x04 /* Attenuation LR (Left Rear) */ | |
111 | #define TDA7432_RF 0x05 /* Attenuation RF (Right Front) */ | |
112 | #define TDA7432_RR 0x06 /* Attenuation RR (Right Rear) */ | |
113 | #define TDA7432_LD 0x07 /* Loudness */ | |
114 | ||
115 | ||
116 | /* Masks for bits in TDA7432 subaddresses */ | |
117 | ||
118 | /* Many of these not used - just for documentation */ | |
119 | ||
120 | /* Subaddress 0x00 - Input selection and bass control */ | |
121 | ||
122 | /* Bits 0,1,2 control input: | |
123 | * 0x00 - Stereo input | |
124 | * 0x02 - Mono input | |
125 | * 0x03 - Mute (Using Attenuators Plays better with modules) | |
126 | * Mono probably isn't used - I'm guessing only the stereo | |
127 | * input is connected on most cards, so we'll set it to stereo. | |
128 | * | |
129 | * Bit 3 controls bass cut: 0/1 is non-symmetric/symmetric bass cut | |
130 | * Bit 4 controls bass range: 0/1 is extended/standard bass range | |
131 | * | |
132 | * Highest 3 bits not used | |
133 | */ | |
134 | ||
135 | #define TDA7432_STEREO_IN 0 | |
136 | #define TDA7432_MONO_IN 2 /* Probably won't be used */ | |
137 | #define TDA7432_BASS_SYM 1 << 3 | |
138 | #define TDA7432_BASS_NORM 1 << 4 | |
139 | ||
140 | /* Subaddress 0x01 - Volume */ | |
141 | ||
142 | /* Lower 7 bits control volume from -79dB to +32dB in 1dB steps | |
143 | * Recommended maximum is +20 dB | |
144 | * | |
145 | * +32dB: 0x00 | |
146 | * +20dB: 0x0c | |
147 | * 0dB: 0x20 | |
148 | * -79dB: 0x6f | |
149 | * | |
150 | * MSB (bit 7) controls loudness: 1/0 is loudness on/off | |
151 | */ | |
152 | ||
153 | #define TDA7432_VOL_0DB 0x20 | |
154 | #define TDA7432_LD_ON 1 << 7 | |
155 | ||
156 | ||
157 | /* Subaddress 0x02 - Tone control */ | |
158 | ||
159 | /* Bits 0,1,2 control absolute treble gain from 0dB to 14dB | |
160 | * 0x0 is 14dB, 0x7 is 0dB | |
161 | * | |
162 | * Bit 3 controls treble attenuation/gain (sign) | |
163 | * 1 = gain (+) | |
164 | * 0 = attenuation (-) | |
165 | * | |
166 | * Bits 4,5,6 control absolute bass gain from 0dB to 14dB | |
167 | * (This is only true for normal base range, set in 0x00) | |
168 | * 0x0 << 4 is 14dB, 0x7 is 0dB | |
169 | * | |
170 | * Bit 7 controls bass attenuation/gain (sign) | |
171 | * 1 << 7 = gain (+) | |
172 | * 0 << 7 = attenuation (-) | |
173 | * | |
174 | * Example: | |
175 | * 1 1 0 1 0 1 0 1 is +4dB bass, -4dB treble | |
176 | */ | |
177 | ||
178 | #define TDA7432_TREBLE_0DB 0xf | |
179 | #define TDA7432_TREBLE 7 | |
180 | #define TDA7432_TREBLE_GAIN 1 << 3 | |
181 | #define TDA7432_BASS_0DB 0xf | |
182 | #define TDA7432_BASS 7 << 4 | |
183 | #define TDA7432_BASS_GAIN 1 << 7 | |
184 | ||
185 | ||
186 | /* Subaddress 0x03 - Left Front attenuation */ | |
187 | /* Subaddress 0x04 - Left Rear attenuation */ | |
188 | /* Subaddress 0x05 - Right Front attenuation */ | |
189 | /* Subaddress 0x06 - Right Rear attenuation */ | |
190 | ||
191 | /* Bits 0,1,2,3,4 control attenuation from 0dB to -37.5dB | |
192 | * in 1.5dB steps. | |
193 | * | |
194 | * 0x00 is 0dB | |
195 | * 0x1f is -37.5dB | |
196 | * | |
197 | * Bit 5 mutes that channel when set (1 = mute, 0 = unmute) | |
198 | * We'll use the mute on the input, though (above) | |
199 | * Bits 6,7 unused | |
200 | */ | |
201 | ||
202 | #define TDA7432_ATTEN_0DB 0x00 | |
203 | #define TDA7432_MUTE 0x1 << 5 | |
204 | ||
205 | ||
206 | /* Subaddress 0x07 - Loudness Control */ | |
207 | ||
208 | /* Bits 0,1,2,3 control loudness from 0dB to -15dB in 1dB steps | |
209 | * when bit 4 is NOT set | |
210 | * | |
211 | * 0x0 is 0dB | |
212 | * 0xf is -15dB | |
213 | * | |
214 | * If bit 4 is set, then there is a flat attenuation according to | |
215 | * the lower 4 bits, as above. | |
216 | * | |
217 | * Bits 5,6,7 unused | |
218 | */ | |
219 | ||
220 | ||
221 | ||
222 | /* Begin code */ | |
223 | ||
d531305a | 224 | static int tda7432_write(struct v4l2_subdev *sd, int subaddr, int val) |
1da177e4 | 225 | { |
d531305a | 226 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
1da177e4 | 227 | unsigned char buffer[2]; |
d531305a HV |
228 | |
229 | v4l2_dbg(2, debug, sd, "In tda7432_write\n"); | |
230 | v4l2_dbg(1, debug, sd, "Writing %d 0x%x\n", subaddr, val); | |
1da177e4 LT |
231 | buffer[0] = subaddr; |
232 | buffer[1] = val; | |
d531305a HV |
233 | if (2 != i2c_master_send(client, buffer, 2)) { |
234 | v4l2_err(sd, "I/O error, trying (write %d 0x%x)\n", | |
1da177e4 LT |
235 | subaddr, val); |
236 | return -1; | |
237 | } | |
238 | return 0; | |
239 | } | |
240 | ||
d531305a | 241 | static int tda7432_set(struct v4l2_subdev *sd) |
1da177e4 | 242 | { |
d531305a HV |
243 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
244 | struct tda7432 *t = to_state(sd); | |
1da177e4 | 245 | unsigned char buf[16]; |
1da177e4 | 246 | |
d531305a | 247 | v4l2_dbg(1, debug, sd, |
1da177e4 | 248 | "tda7432: 7432_set(0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x)\n", |
d531305a HV |
249 | t->input, t->volume, t->bass, t->treble, t->lf, t->lr, |
250 | t->rf, t->rr, t->loud); | |
1da177e4 LT |
251 | buf[0] = TDA7432_IN; |
252 | buf[1] = t->input; | |
253 | buf[2] = t->volume; | |
254 | buf[3] = t->bass; | |
255 | buf[4] = t->treble; | |
256 | buf[5] = t->lf; | |
257 | buf[6] = t->lr; | |
258 | buf[7] = t->rf; | |
259 | buf[8] = t->rr; | |
260 | buf[9] = t->loud; | |
d531305a HV |
261 | if (10 != i2c_master_send(client, buf, 10)) { |
262 | v4l2_err(sd, "I/O error, trying tda7432_set\n"); | |
1da177e4 LT |
263 | return -1; |
264 | } | |
265 | ||
266 | return 0; | |
267 | } | |
268 | ||
d531305a | 269 | static void do_tda7432_init(struct v4l2_subdev *sd) |
1da177e4 | 270 | { |
d531305a HV |
271 | struct tda7432 *t = to_state(sd); |
272 | ||
273 | v4l2_dbg(2, debug, sd, "In tda7432_init\n"); | |
1da177e4 LT |
274 | |
275 | t->input = TDA7432_STEREO_IN | /* Main (stereo) input */ | |
276 | TDA7432_BASS_SYM | /* Symmetric bass cut */ | |
277 | TDA7432_BASS_NORM; /* Normal bass range */ | |
278 | t->volume = 0x3b ; /* -27dB Volume */ | |
279 | if (loudness) /* Turn loudness on? */ | |
280 | t->volume |= TDA7432_LD_ON; | |
7a00d45c | 281 | t->muted = 1; |
1da177e4 LT |
282 | t->treble = TDA7432_TREBLE_0DB; /* 0dB Treble */ |
283 | t->bass = TDA7432_BASS_0DB; /* 0dB Bass */ | |
284 | t->lf = TDA7432_ATTEN_0DB; /* 0dB attenuation */ | |
285 | t->lr = TDA7432_ATTEN_0DB; /* 0dB attenuation */ | |
286 | t->rf = TDA7432_ATTEN_0DB; /* 0dB attenuation */ | |
287 | t->rr = TDA7432_ATTEN_0DB; /* 0dB attenuation */ | |
288 | t->loud = loudness; /* insmod parameter */ | |
289 | ||
d531305a | 290 | tda7432_set(sd); |
1da177e4 LT |
291 | } |
292 | ||
d531305a | 293 | static int tda7432_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) |
1da177e4 | 294 | { |
d531305a | 295 | struct tda7432 *t = to_state(sd); |
1da177e4 | 296 | |
7a00d45c MCC |
297 | switch (ctrl->id) { |
298 | case V4L2_CID_AUDIO_MUTE: | |
299 | ctrl->value=t->muted; | |
300 | return 0; | |
301 | case V4L2_CID_AUDIO_VOLUME: | |
1da177e4 | 302 | if (!maxvol){ /* max +20db */ |
7a00d45c | 303 | ctrl->value = ( 0x6f - (t->volume & 0x7F) ) * 630; |
1da177e4 | 304 | } else { /* max 0db */ |
7a00d45c | 305 | ctrl->value = ( 0x6f - (t->volume & 0x7F) ) * 829; |
1da177e4 | 306 | } |
7a00d45c MCC |
307 | return 0; |
308 | case V4L2_CID_AUDIO_BALANCE: | |
309 | { | |
1da177e4 LT |
310 | if ( (t->lf) < (t->rf) ) |
311 | /* right is attenuated, balance shifted left */ | |
7a00d45c | 312 | ctrl->value = (32768 - 1057*(t->rf)); |
1da177e4 LT |
313 | else |
314 | /* left is attenuated, balance shifted right */ | |
7a00d45c MCC |
315 | ctrl->value = (32768 + 1057*(t->lf)); |
316 | return 0; | |
317 | } | |
318 | case V4L2_CID_AUDIO_BASS: | |
319 | { | |
1da177e4 | 320 | /* Bass/treble 4 bits each */ |
7a00d45c MCC |
321 | int bass=t->bass; |
322 | if(bass >= 0x8) | |
323 | bass = ~(bass - 0x8) & 0xf; | |
324 | ctrl->value = (bass << 12)+(bass << 8)+(bass << 4)+(bass); | |
325 | return 0; | |
1da177e4 | 326 | } |
7a00d45c | 327 | case V4L2_CID_AUDIO_TREBLE: |
1da177e4 | 328 | { |
7a00d45c MCC |
329 | int treble=t->treble; |
330 | if(treble >= 0x8) | |
331 | treble = ~(treble - 0x8) & 0xf; | |
332 | ctrl->value = (treble << 12)+(treble << 8)+(treble << 4)+(treble); | |
333 | return 0; | |
334 | } | |
335 | } | |
336 | return -EINVAL; | |
337 | } | |
1da177e4 | 338 | |
d531305a | 339 | static int tda7432_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) |
7a00d45c | 340 | { |
d531305a | 341 | struct tda7432 *t = to_state(sd); |
1da177e4 | 342 | |
7a00d45c MCC |
343 | switch (ctrl->id) { |
344 | case V4L2_CID_AUDIO_MUTE: | |
345 | t->muted=ctrl->value; | |
346 | break; | |
347 | case V4L2_CID_AUDIO_VOLUME: | |
348 | if(!maxvol){ /* max +20db */ | |
349 | t->volume = 0x6f - ((ctrl->value)/630); | |
350 | } else { /* max 0db */ | |
351 | t->volume = 0x6f - ((ctrl->value)/829); | |
352 | } | |
1da177e4 LT |
353 | if (loudness) /* Turn on the loudness bit */ |
354 | t->volume |= TDA7432_LD_ON; | |
355 | ||
d531305a | 356 | tda7432_write(sd, TDA7432_VL, t->volume); |
7a00d45c MCC |
357 | return 0; |
358 | case V4L2_CID_AUDIO_BALANCE: | |
359 | if (ctrl->value < 32768) { | |
1da177e4 | 360 | /* shifted to left, attenuate right */ |
7a00d45c | 361 | t->rr = (32768 - ctrl->value)/1057; |
1da177e4 LT |
362 | t->rf = t->rr; |
363 | t->lr = TDA7432_ATTEN_0DB; | |
364 | t->lf = TDA7432_ATTEN_0DB; | |
7a00d45c | 365 | } else if(ctrl->value > 32769) { |
1da177e4 | 366 | /* shifted to right, attenuate left */ |
7a00d45c | 367 | t->lf = (ctrl->value - 32768)/1057; |
1da177e4 LT |
368 | t->lr = t->lf; |
369 | t->rr = TDA7432_ATTEN_0DB; | |
370 | t->rf = TDA7432_ATTEN_0DB; | |
7a00d45c | 371 | } else { |
1da177e4 LT |
372 | /* centered */ |
373 | t->rr = TDA7432_ATTEN_0DB; | |
374 | t->rf = TDA7432_ATTEN_0DB; | |
375 | t->lf = TDA7432_ATTEN_0DB; | |
376 | t->lr = TDA7432_ATTEN_0DB; | |
377 | } | |
7a00d45c MCC |
378 | break; |
379 | case V4L2_CID_AUDIO_BASS: | |
380 | t->bass = ctrl->value >> 12; | |
381 | if(t->bass>= 0x8) | |
382 | t->bass = (~t->bass & 0xf) + 0x8 ; | |
383 | ||
d531305a | 384 | tda7432_write(sd, TDA7432_TN, 0x10 | (t->bass << 4) | t->treble); |
7a00d45c MCC |
385 | return 0; |
386 | case V4L2_CID_AUDIO_TREBLE: | |
387 | t->treble= ctrl->value >> 12; | |
388 | if(t->treble>= 0x8) | |
389 | t->treble = (~t->treble & 0xf) + 0x8 ; | |
390 | ||
d531305a | 391 | tda7432_write(sd, TDA7432_TN, 0x10 | (t->bass << 4) | t->treble); |
7a00d45c MCC |
392 | return 0; |
393 | default: | |
394 | return -EINVAL; | |
395 | } | |
1da177e4 | 396 | |
7a00d45c MCC |
397 | /* Used for both mute and balance changes */ |
398 | if (t->muted) | |
399 | { | |
400 | /* Mute & update balance*/ | |
d531305a HV |
401 | tda7432_write(sd, TDA7432_LF, t->lf | TDA7432_MUTE); |
402 | tda7432_write(sd, TDA7432_LR, t->lr | TDA7432_MUTE); | |
403 | tda7432_write(sd, TDA7432_RF, t->rf | TDA7432_MUTE); | |
404 | tda7432_write(sd, TDA7432_RR, t->rr | TDA7432_MUTE); | |
7a00d45c | 405 | } else { |
d531305a HV |
406 | tda7432_write(sd, TDA7432_LF, t->lf); |
407 | tda7432_write(sd, TDA7432_LR, t->lr); | |
408 | tda7432_write(sd, TDA7432_RF, t->rf); | |
409 | tda7432_write(sd, TDA7432_RR, t->rr); | |
7a00d45c MCC |
410 | } |
411 | return 0; | |
412 | } | |
1da177e4 | 413 | |
d531305a | 414 | static int tda7432_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc) |
7a00d45c | 415 | { |
d531305a | 416 | switch (qc->id) { |
d531305a | 417 | case V4L2_CID_AUDIO_VOLUME: |
10afbef1 HV |
418 | return v4l2_ctrl_query_fill(qc, 0, 65535, 65535 / 100, 58880); |
419 | case V4L2_CID_AUDIO_MUTE: | |
420 | return v4l2_ctrl_query_fill(qc, 0, 1, 1, 0); | |
d531305a HV |
421 | case V4L2_CID_AUDIO_BALANCE: |
422 | case V4L2_CID_AUDIO_BASS: | |
423 | case V4L2_CID_AUDIO_TREBLE: | |
10afbef1 | 424 | return v4l2_ctrl_query_fill(qc, 0, 65535, 65535 / 100, 32768); |
7a00d45c | 425 | } |
d531305a HV |
426 | return -EINVAL; |
427 | } | |
1da177e4 | 428 | |
d531305a HV |
429 | /* ----------------------------------------------------------------------- */ |
430 | ||
431 | static const struct v4l2_subdev_core_ops tda7432_core_ops = { | |
432 | .queryctrl = tda7432_queryctrl, | |
433 | .g_ctrl = tda7432_g_ctrl, | |
434 | .s_ctrl = tda7432_s_ctrl, | |
1da177e4 LT |
435 | }; |
436 | ||
d531305a HV |
437 | static const struct v4l2_subdev_ops tda7432_ops = { |
438 | .core = &tda7432_core_ops, | |
1da177e4 LT |
439 | }; |
440 | ||
d531305a HV |
441 | /* ----------------------------------------------------------------------- */ |
442 | ||
443 | /* *********************** * | |
444 | * i2c interface functions * | |
445 | * *********************** */ | |
446 | ||
447 | static int tda7432_probe(struct i2c_client *client, | |
448 | const struct i2c_device_id *id) | |
1da177e4 | 449 | { |
d531305a HV |
450 | struct tda7432 *t; |
451 | struct v4l2_subdev *sd; | |
452 | ||
453 | v4l_info(client, "chip found @ 0x%02x (%s)\n", | |
454 | client->addr << 1, client->adapter->name); | |
455 | ||
456 | t = kzalloc(sizeof(*t), GFP_KERNEL); | |
457 | if (!t) | |
458 | return -ENOMEM; | |
459 | sd = &t->sd; | |
460 | v4l2_i2c_subdev_init(sd, client, &tda7432_ops); | |
461 | if (loudness < 0 || loudness > 15) { | |
462 | v4l2_warn(sd, "loudness parameter must be between 0 and 15\n"); | |
463 | if (loudness < 0) | |
464 | loudness = 0; | |
465 | if (loudness > 15) | |
466 | loudness = 15; | |
1da177e4 LT |
467 | } |
468 | ||
d531305a HV |
469 | do_tda7432_init(sd); |
470 | return 0; | |
1da177e4 LT |
471 | } |
472 | ||
d531305a | 473 | static int tda7432_remove(struct i2c_client *client) |
1da177e4 | 474 | { |
d531305a | 475 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
1da177e4 | 476 | |
d531305a HV |
477 | do_tda7432_init(sd); |
478 | v4l2_device_unregister_subdev(sd); | |
479 | kfree(to_state(sd)); | |
480 | return 0; | |
481 | } | |
1da177e4 | 482 | |
d531305a HV |
483 | static const struct i2c_device_id tda7432_id[] = { |
484 | { "tda7432", 0 }, | |
485 | { } | |
486 | }; | |
487 | MODULE_DEVICE_TABLE(i2c, tda7432_id); | |
488 | ||
489 | static struct v4l2_i2c_driver_data v4l2_i2c_data = { | |
490 | .name = "tda7432", | |
d531305a HV |
491 | .probe = tda7432_probe, |
492 | .remove = tda7432_remove, | |
493 | .id_table = tda7432_id, | |
494 | }; |