diff options
author | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
---|---|---|
committer | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
commit | fcc9d2e5a6c89d22b8b773a64fb4ad21ac318446 (patch) | |
tree | a57612d1888735a2ec7972891b68c1ac5ec8faea /drivers/media/video/tda7432.c | |
parent | 8dea78da5cee153b8af9c07a2745f6c55057fe12 (diff) |
Diffstat (limited to 'drivers/media/video/tda7432.c')
-rw-r--r-- | drivers/media/video/tda7432.c | 496 |
1 files changed, 496 insertions, 0 deletions
diff --git a/drivers/media/video/tda7432.c b/drivers/media/video/tda7432.c new file mode 100644 index 00000000000..bd218545da9 --- /dev/null +++ b/drivers/media/video/tda7432.c | |||
@@ -0,0 +1,496 @@ | |||
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> | ||
11 | * Copyright (c) 2006 Mauro Carvalho Chehab <mchehab@infradead.org> | ||
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 | #include <linux/module.h> | ||
26 | #include <linux/init.h> | ||
27 | #include <linux/kernel.h> | ||
28 | #include <linux/string.h> | ||
29 | #include <linux/timer.h> | ||
30 | #include <linux/delay.h> | ||
31 | #include <linux/errno.h> | ||
32 | #include <linux/slab.h> | ||
33 | #include <linux/videodev2.h> | ||
34 | #include <linux/i2c.h> | ||
35 | |||
36 | #include <media/v4l2-device.h> | ||
37 | #include <media/v4l2-ioctl.h> | ||
38 | #include <media/i2c-addr.h> | ||
39 | |||
40 | #ifndef VIDEO_AUDIO_BALANCE | ||
41 | # define VIDEO_AUDIO_BALANCE 32 | ||
42 | #endif | ||
43 | |||
44 | MODULE_AUTHOR("Eric Sandeen <eric_sandeen@bigfoot.com>"); | ||
45 | MODULE_DESCRIPTION("bttv driver for the tda7432 audio processor chip"); | ||
46 | MODULE_LICENSE("GPL"); | ||
47 | |||
48 | static int maxvol; | ||
49 | static int loudness; /* disable loudness by default */ | ||
50 | static int debug; /* insmod parameter */ | ||
51 | module_param(debug, int, S_IRUGO | S_IWUSR); | ||
52 | MODULE_PARM_DESC(debug, "Set debugging level from 0 to 3. Default is off(0)."); | ||
53 | module_param(loudness, int, S_IRUGO); | ||
54 | MODULE_PARM_DESC(loudness, "Turn loudness on(1) else off(0). Default is off(0)."); | ||
55 | module_param(maxvol, int, S_IRUGO | S_IWUSR); | ||
56 | MODULE_PARM_DESC(maxvol, "Set maximium volume to +20dB(0) else +0dB(1). Default is +20dB(0)."); | ||
57 | |||
58 | |||
59 | /* Structure of address and subaddresses for the tda7432 */ | ||
60 | |||
61 | struct tda7432 { | ||
62 | struct v4l2_subdev sd; | ||
63 | int addr; | ||
64 | int input; | ||
65 | int volume; | ||
66 | int muted; | ||
67 | int bass, treble; | ||
68 | int lf, lr, rf, rr; | ||
69 | int loud; | ||
70 | }; | ||
71 | |||
72 | static inline struct tda7432 *to_state(struct v4l2_subdev *sd) | ||
73 | { | ||
74 | return container_of(sd, struct tda7432, sd); | ||
75 | } | ||
76 | |||
77 | /* The TDA7432 is made by STS-Thompson | ||
78 | * http://www.st.com | ||
79 | * http://us.st.com/stonline/books/pdf/docs/4056.pdf | ||
80 | * | ||
81 | * TDA7432: I2C-bus controlled basic audio processor | ||
82 | * | ||
83 | * The TDA7432 controls basic audio functions like volume, balance, | ||
84 | * and tone control (including loudness). It also has four channel | ||
85 | * output (for front and rear). Since most vidcap cards probably | ||
86 | * don't have 4 channel output, this driver will set front & rear | ||
87 | * together (no independent control). | ||
88 | */ | ||
89 | |||
90 | /* Subaddresses for TDA7432 */ | ||
91 | |||
92 | #define TDA7432_IN 0x00 /* Input select */ | ||
93 | #define TDA7432_VL 0x01 /* Volume */ | ||
94 | #define TDA7432_TN 0x02 /* Bass, Treble (Tone) */ | ||
95 | #define TDA7432_LF 0x03 /* Attenuation LF (Left Front) */ | ||
96 | #define TDA7432_LR 0x04 /* Attenuation LR (Left Rear) */ | ||
97 | #define TDA7432_RF 0x05 /* Attenuation RF (Right Front) */ | ||
98 | #define TDA7432_RR 0x06 /* Attenuation RR (Right Rear) */ | ||
99 | #define TDA7432_LD 0x07 /* Loudness */ | ||
100 | |||
101 | |||
102 | /* Masks for bits in TDA7432 subaddresses */ | ||
103 | |||
104 | /* Many of these not used - just for documentation */ | ||
105 | |||
106 | /* Subaddress 0x00 - Input selection and bass control */ | ||
107 | |||
108 | /* Bits 0,1,2 control input: | ||
109 | * 0x00 - Stereo input | ||
110 | * 0x02 - Mono input | ||
111 | * 0x03 - Mute (Using Attenuators Plays better with modules) | ||
112 | * Mono probably isn't used - I'm guessing only the stereo | ||
113 | * input is connected on most cards, so we'll set it to stereo. | ||
114 | * | ||
115 | * Bit 3 controls bass cut: 0/1 is non-symmetric/symmetric bass cut | ||
116 | * Bit 4 controls bass range: 0/1 is extended/standard bass range | ||
117 | * | ||
118 | * Highest 3 bits not used | ||
119 | */ | ||
120 | |||
121 | #define TDA7432_STEREO_IN 0 | ||
122 | #define TDA7432_MONO_IN 2 /* Probably won't be used */ | ||
123 | #define TDA7432_BASS_SYM 1 << 3 | ||
124 | #define TDA7432_BASS_NORM 1 << 4 | ||
125 | |||
126 | /* Subaddress 0x01 - Volume */ | ||
127 | |||
128 | /* Lower 7 bits control volume from -79dB to +32dB in 1dB steps | ||
129 | * Recommended maximum is +20 dB | ||
130 | * | ||
131 | * +32dB: 0x00 | ||
132 | * +20dB: 0x0c | ||
133 | * 0dB: 0x20 | ||
134 | * -79dB: 0x6f | ||
135 | * | ||
136 | * MSB (bit 7) controls loudness: 1/0 is loudness on/off | ||
137 | */ | ||
138 | |||
139 | #define TDA7432_VOL_0DB 0x20 | ||
140 | #define TDA7432_LD_ON 1 << 7 | ||
141 | |||
142 | |||
143 | /* Subaddress 0x02 - Tone control */ | ||
144 | |||
145 | /* Bits 0,1,2 control absolute treble gain from 0dB to 14dB | ||
146 | * 0x0 is 14dB, 0x7 is 0dB | ||
147 | * | ||
148 | * Bit 3 controls treble attenuation/gain (sign) | ||
149 | * 1 = gain (+) | ||
150 | * 0 = attenuation (-) | ||
151 | * | ||
152 | * Bits 4,5,6 control absolute bass gain from 0dB to 14dB | ||
153 | * (This is only true for normal base range, set in 0x00) | ||
154 | * 0x0 << 4 is 14dB, 0x7 is 0dB | ||
155 | * | ||
156 | * Bit 7 controls bass attenuation/gain (sign) | ||
157 | * 1 << 7 = gain (+) | ||
158 | * 0 << 7 = attenuation (-) | ||
159 | * | ||
160 | * Example: | ||
161 | * 1 1 0 1 0 1 0 1 is +4dB bass, -4dB treble | ||
162 | */ | ||
163 | |||
164 | #define TDA7432_TREBLE_0DB 0xf | ||
165 | #define TDA7432_TREBLE 7 | ||
166 | #define TDA7432_TREBLE_GAIN 1 << 3 | ||
167 | #define TDA7432_BASS_0DB 0xf | ||
168 | #define TDA7432_BASS 7 << 4 | ||
169 | #define TDA7432_BASS_GAIN 1 << 7 | ||
170 | |||
171 | |||
172 | /* Subaddress 0x03 - Left Front attenuation */ | ||
173 | /* Subaddress 0x04 - Left Rear attenuation */ | ||
174 | /* Subaddress 0x05 - Right Front attenuation */ | ||
175 | /* Subaddress 0x06 - Right Rear attenuation */ | ||
176 | |||
177 | /* Bits 0,1,2,3,4 control attenuation from 0dB to -37.5dB | ||
178 | * in 1.5dB steps. | ||
179 | * | ||
180 | * 0x00 is 0dB | ||
181 | * 0x1f is -37.5dB | ||
182 | * | ||
183 | * Bit 5 mutes that channel when set (1 = mute, 0 = unmute) | ||
184 | * We'll use the mute on the input, though (above) | ||
185 | * Bits 6,7 unused | ||
186 | */ | ||
187 | |||
188 | #define TDA7432_ATTEN_0DB 0x00 | ||
189 | #define TDA7432_MUTE 0x1 << 5 | ||
190 | |||
191 | |||
192 | /* Subaddress 0x07 - Loudness Control */ | ||
193 | |||
194 | /* Bits 0,1,2,3 control loudness from 0dB to -15dB in 1dB steps | ||
195 | * when bit 4 is NOT set | ||
196 | * | ||
197 | * 0x0 is 0dB | ||
198 | * 0xf is -15dB | ||
199 | * | ||
200 | * If bit 4 is set, then there is a flat attenuation according to | ||
201 | * the lower 4 bits, as above. | ||
202 | * | ||
203 | * Bits 5,6,7 unused | ||
204 | */ | ||
205 | |||
206 | |||
207 | |||
208 | /* Begin code */ | ||
209 | |||
210 | static int tda7432_write(struct v4l2_subdev *sd, int subaddr, int val) | ||
211 | { | ||
212 | struct i2c_client *client = v4l2_get_subdevdata(sd); | ||
213 | unsigned char buffer[2]; | ||
214 | |||
215 | v4l2_dbg(2, debug, sd, "In tda7432_write\n"); | ||
216 | v4l2_dbg(1, debug, sd, "Writing %d 0x%x\n", subaddr, val); | ||
217 | buffer[0] = subaddr; | ||
218 | buffer[1] = val; | ||
219 | if (2 != i2c_master_send(client, buffer, 2)) { | ||
220 | v4l2_err(sd, "I/O error, trying (write %d 0x%x)\n", | ||
221 | subaddr, val); | ||
222 | return -1; | ||
223 | } | ||
224 | return 0; | ||
225 | } | ||
226 | |||
227 | static int tda7432_set(struct v4l2_subdev *sd) | ||
228 | { | ||
229 | struct i2c_client *client = v4l2_get_subdevdata(sd); | ||
230 | struct tda7432 *t = to_state(sd); | ||
231 | unsigned char buf[16]; | ||
232 | |||
233 | v4l2_dbg(1, debug, sd, | ||
234 | "tda7432: 7432_set(0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x)\n", | ||
235 | t->input, t->volume, t->bass, t->treble, t->lf, t->lr, | ||
236 | t->rf, t->rr, t->loud); | ||
237 | buf[0] = TDA7432_IN; | ||
238 | buf[1] = t->input; | ||
239 | buf[2] = t->volume; | ||
240 | buf[3] = t->bass; | ||
241 | buf[4] = t->treble; | ||
242 | buf[5] = t->lf; | ||
243 | buf[6] = t->lr; | ||
244 | buf[7] = t->rf; | ||
245 | buf[8] = t->rr; | ||
246 | buf[9] = t->loud; | ||
247 | if (10 != i2c_master_send(client, buf, 10)) { | ||
248 | v4l2_err(sd, "I/O error, trying tda7432_set\n"); | ||
249 | return -1; | ||
250 | } | ||
251 | |||
252 | return 0; | ||
253 | } | ||
254 | |||
255 | static void do_tda7432_init(struct v4l2_subdev *sd) | ||
256 | { | ||
257 | struct tda7432 *t = to_state(sd); | ||
258 | |||
259 | v4l2_dbg(2, debug, sd, "In tda7432_init\n"); | ||
260 | |||
261 | t->input = TDA7432_STEREO_IN | /* Main (stereo) input */ | ||
262 | TDA7432_BASS_SYM | /* Symmetric bass cut */ | ||
263 | TDA7432_BASS_NORM; /* Normal bass range */ | ||
264 | t->volume = 0x3b ; /* -27dB Volume */ | ||
265 | if (loudness) /* Turn loudness on? */ | ||
266 | t->volume |= TDA7432_LD_ON; | ||
267 | t->muted = 1; | ||
268 | t->treble = TDA7432_TREBLE_0DB; /* 0dB Treble */ | ||
269 | t->bass = TDA7432_BASS_0DB; /* 0dB Bass */ | ||
270 | t->lf = TDA7432_ATTEN_0DB; /* 0dB attenuation */ | ||
271 | t->lr = TDA7432_ATTEN_0DB; /* 0dB attenuation */ | ||
272 | t->rf = TDA7432_ATTEN_0DB; /* 0dB attenuation */ | ||
273 | t->rr = TDA7432_ATTEN_0DB; /* 0dB attenuation */ | ||
274 | t->loud = loudness; /* insmod parameter */ | ||
275 | |||
276 | tda7432_set(sd); | ||
277 | } | ||
278 | |||
279 | static int tda7432_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) | ||
280 | { | ||
281 | struct tda7432 *t = to_state(sd); | ||
282 | |||
283 | switch (ctrl->id) { | ||
284 | case V4L2_CID_AUDIO_MUTE: | ||
285 | ctrl->value=t->muted; | ||
286 | return 0; | ||
287 | case V4L2_CID_AUDIO_VOLUME: | ||
288 | if (!maxvol){ /* max +20db */ | ||
289 | ctrl->value = ( 0x6f - (t->volume & 0x7F) ) * 630; | ||
290 | } else { /* max 0db */ | ||
291 | ctrl->value = ( 0x6f - (t->volume & 0x7F) ) * 829; | ||
292 | } | ||
293 | return 0; | ||
294 | case V4L2_CID_AUDIO_BALANCE: | ||
295 | { | ||
296 | if ( (t->lf) < (t->rf) ) | ||
297 | /* right is attenuated, balance shifted left */ | ||
298 | ctrl->value = (32768 - 1057*(t->rf)); | ||
299 | else | ||
300 | /* left is attenuated, balance shifted right */ | ||
301 | ctrl->value = (32768 + 1057*(t->lf)); | ||
302 | return 0; | ||
303 | } | ||
304 | case V4L2_CID_AUDIO_BASS: | ||
305 | { | ||
306 | /* Bass/treble 4 bits each */ | ||
307 | int bass=t->bass; | ||
308 | if(bass >= 0x8) | ||
309 | bass = ~(bass - 0x8) & 0xf; | ||
310 | ctrl->value = (bass << 12)+(bass << 8)+(bass << 4)+(bass); | ||
311 | return 0; | ||
312 | } | ||
313 | case V4L2_CID_AUDIO_TREBLE: | ||
314 | { | ||
315 | int treble=t->treble; | ||
316 | if(treble >= 0x8) | ||
317 | treble = ~(treble - 0x8) & 0xf; | ||
318 | ctrl->value = (treble << 12)+(treble << 8)+(treble << 4)+(treble); | ||
319 | return 0; | ||
320 | } | ||
321 | } | ||
322 | return -EINVAL; | ||
323 | } | ||
324 | |||
325 | static int tda7432_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) | ||
326 | { | ||
327 | struct tda7432 *t = to_state(sd); | ||
328 | |||
329 | switch (ctrl->id) { | ||
330 | case V4L2_CID_AUDIO_MUTE: | ||
331 | t->muted=ctrl->value; | ||
332 | break; | ||
333 | case V4L2_CID_AUDIO_VOLUME: | ||
334 | if(!maxvol){ /* max +20db */ | ||
335 | t->volume = 0x6f - ((ctrl->value)/630); | ||
336 | } else { /* max 0db */ | ||
337 | t->volume = 0x6f - ((ctrl->value)/829); | ||
338 | } | ||
339 | if (loudness) /* Turn on the loudness bit */ | ||
340 | t->volume |= TDA7432_LD_ON; | ||
341 | |||
342 | tda7432_write(sd, TDA7432_VL, t->volume); | ||
343 | return 0; | ||
344 | case V4L2_CID_AUDIO_BALANCE: | ||
345 | if (ctrl->value < 32768) { | ||
346 | /* shifted to left, attenuate right */ | ||
347 | t->rr = (32768 - ctrl->value)/1057; | ||
348 | t->rf = t->rr; | ||
349 | t->lr = TDA7432_ATTEN_0DB; | ||
350 | t->lf = TDA7432_ATTEN_0DB; | ||
351 | } else if(ctrl->value > 32769) { | ||
352 | /* shifted to right, attenuate left */ | ||
353 | t->lf = (ctrl->value - 32768)/1057; | ||
354 | t->lr = t->lf; | ||
355 | t->rr = TDA7432_ATTEN_0DB; | ||
356 | t->rf = TDA7432_ATTEN_0DB; | ||
357 | } else { | ||
358 | /* centered */ | ||
359 | t->rr = TDA7432_ATTEN_0DB; | ||
360 | t->rf = TDA7432_ATTEN_0DB; | ||
361 | t->lf = TDA7432_ATTEN_0DB; | ||
362 | t->lr = TDA7432_ATTEN_0DB; | ||
363 | } | ||
364 | break; | ||
365 | case V4L2_CID_AUDIO_BASS: | ||
366 | t->bass = ctrl->value >> 12; | ||
367 | if(t->bass>= 0x8) | ||
368 | t->bass = (~t->bass & 0xf) + 0x8 ; | ||
369 | |||
370 | tda7432_write(sd, TDA7432_TN, 0x10 | (t->bass << 4) | t->treble); | ||
371 | return 0; | ||
372 | case V4L2_CID_AUDIO_TREBLE: | ||
373 | t->treble= ctrl->value >> 12; | ||
374 | if(t->treble>= 0x8) | ||
375 | t->treble = (~t->treble & 0xf) + 0x8 ; | ||
376 | |||
377 | tda7432_write(sd, TDA7432_TN, 0x10 | (t->bass << 4) | t->treble); | ||
378 | return 0; | ||
379 | default: | ||
380 | return -EINVAL; | ||
381 | } | ||
382 | |||
383 | /* Used for both mute and balance changes */ | ||
384 | if (t->muted) | ||
385 | { | ||
386 | /* Mute & update balance*/ | ||
387 | tda7432_write(sd, TDA7432_LF, t->lf | TDA7432_MUTE); | ||
388 | tda7432_write(sd, TDA7432_LR, t->lr | TDA7432_MUTE); | ||
389 | tda7432_write(sd, TDA7432_RF, t->rf | TDA7432_MUTE); | ||
390 | tda7432_write(sd, TDA7432_RR, t->rr | TDA7432_MUTE); | ||
391 | } else { | ||
392 | tda7432_write(sd, TDA7432_LF, t->lf); | ||
393 | tda7432_write(sd, TDA7432_LR, t->lr); | ||
394 | tda7432_write(sd, TDA7432_RF, t->rf); | ||
395 | tda7432_write(sd, TDA7432_RR, t->rr); | ||
396 | } | ||
397 | return 0; | ||
398 | } | ||
399 | |||
400 | static int tda7432_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc) | ||
401 | { | ||
402 | switch (qc->id) { | ||
403 | case V4L2_CID_AUDIO_VOLUME: | ||
404 | return v4l2_ctrl_query_fill(qc, 0, 65535, 65535 / 100, 58880); | ||
405 | case V4L2_CID_AUDIO_MUTE: | ||
406 | return v4l2_ctrl_query_fill(qc, 0, 1, 1, 0); | ||
407 | case V4L2_CID_AUDIO_BALANCE: | ||
408 | case V4L2_CID_AUDIO_BASS: | ||
409 | case V4L2_CID_AUDIO_TREBLE: | ||
410 | return v4l2_ctrl_query_fill(qc, 0, 65535, 65535 / 100, 32768); | ||
411 | } | ||
412 | return -EINVAL; | ||
413 | } | ||
414 | |||
415 | /* ----------------------------------------------------------------------- */ | ||
416 | |||
417 | static const struct v4l2_subdev_core_ops tda7432_core_ops = { | ||
418 | .queryctrl = tda7432_queryctrl, | ||
419 | .g_ctrl = tda7432_g_ctrl, | ||
420 | .s_ctrl = tda7432_s_ctrl, | ||
421 | }; | ||
422 | |||
423 | static const struct v4l2_subdev_ops tda7432_ops = { | ||
424 | .core = &tda7432_core_ops, | ||
425 | }; | ||
426 | |||
427 | /* ----------------------------------------------------------------------- */ | ||
428 | |||
429 | /* *********************** * | ||
430 | * i2c interface functions * | ||
431 | * *********************** */ | ||
432 | |||
433 | static int tda7432_probe(struct i2c_client *client, | ||
434 | const struct i2c_device_id *id) | ||
435 | { | ||
436 | struct tda7432 *t; | ||
437 | struct v4l2_subdev *sd; | ||
438 | |||
439 | v4l_info(client, "chip found @ 0x%02x (%s)\n", | ||
440 | client->addr << 1, client->adapter->name); | ||
441 | |||
442 | t = kzalloc(sizeof(*t), GFP_KERNEL); | ||
443 | if (!t) | ||
444 | return -ENOMEM; | ||
445 | sd = &t->sd; | ||
446 | v4l2_i2c_subdev_init(sd, client, &tda7432_ops); | ||
447 | if (loudness < 0 || loudness > 15) { | ||
448 | v4l2_warn(sd, "loudness parameter must be between 0 and 15\n"); | ||
449 | if (loudness < 0) | ||
450 | loudness = 0; | ||
451 | if (loudness > 15) | ||
452 | loudness = 15; | ||
453 | } | ||
454 | |||
455 | do_tda7432_init(sd); | ||
456 | return 0; | ||
457 | } | ||
458 | |||
459 | static int tda7432_remove(struct i2c_client *client) | ||
460 | { | ||
461 | struct v4l2_subdev *sd = i2c_get_clientdata(client); | ||
462 | |||
463 | do_tda7432_init(sd); | ||
464 | v4l2_device_unregister_subdev(sd); | ||
465 | kfree(to_state(sd)); | ||
466 | return 0; | ||
467 | } | ||
468 | |||
469 | static const struct i2c_device_id tda7432_id[] = { | ||
470 | { "tda7432", 0 }, | ||
471 | { } | ||
472 | }; | ||
473 | MODULE_DEVICE_TABLE(i2c, tda7432_id); | ||
474 | |||
475 | static struct i2c_driver tda7432_driver = { | ||
476 | .driver = { | ||
477 | .owner = THIS_MODULE, | ||
478 | .name = "tda7432", | ||
479 | }, | ||
480 | .probe = tda7432_probe, | ||
481 | .remove = tda7432_remove, | ||
482 | .id_table = tda7432_id, | ||
483 | }; | ||
484 | |||
485 | static __init int init_tda7432(void) | ||
486 | { | ||
487 | return i2c_add_driver(&tda7432_driver); | ||
488 | } | ||
489 | |||
490 | static __exit void exit_tda7432(void) | ||
491 | { | ||
492 | i2c_del_driver(&tda7432_driver); | ||
493 | } | ||
494 | |||
495 | module_init(init_tda7432); | ||
496 | module_exit(exit_tda7432); | ||