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1da177e4 LT |
1 | /* |
2 | * For the TDA9875 chip | |
3 | * (The TDA9875 is used on the Diamond DTV2000 french version | |
4 | * Other cards probably use these chips as well.) | |
5 | * This driver will not complain if used with any | |
6 | * other i2c device with the same address. | |
7 | * | |
8 | * Copyright (c) 2000 Guillaume Delvit based on Gerd Knorr source and | |
9 | * Eric Sandeen | |
10 | * This code is placed under the terms of the GNU General Public License | |
11 | * Based on tda9855.c by Steve VanDeBogart (vandebo@uclink.berkeley.edu) | |
12 | * Which was based on tda8425.c by Greg Alexander (c) 1998 | |
13 | * | |
14 | * OPTIONS: | |
15 | * debug - set to 1 if you'd like to see debug messages | |
16 | * | |
17 | * Revision: 0.1 - original version | |
18 | */ | |
19 | ||
20 | #include <linux/module.h> | |
21 | #include <linux/kernel.h> | |
22 | #include <linux/sched.h> | |
23 | #include <linux/string.h> | |
24 | #include <linux/timer.h> | |
25 | #include <linux/delay.h> | |
26 | #include <linux/errno.h> | |
27 | #include <linux/slab.h> | |
28 | #include <linux/videodev.h> | |
29 | #include <linux/i2c.h> | |
30 | #include <linux/i2c-algo-bit.h> | |
31 | #include <linux/init.h> | |
32 | ||
33 | #include "bttv.h" | |
34 | #include <media/audiochip.h> | |
1da177e4 LT |
35 | |
36 | static int debug; /* insmod parameter */ | |
37 | module_param(debug, int, S_IRUGO | S_IWUSR); | |
38 | MODULE_LICENSE("GPL"); | |
39 | ||
40 | ||
41 | /* Addresses to scan */ | |
42 | static unsigned short normal_i2c[] = { | |
43 | I2C_TDA9875 >> 1, | |
44 | I2C_CLIENT_END | |
45 | }; | |
1da177e4 LT |
46 | I2C_CLIENT_INSMOD; |
47 | ||
48 | /* This is a superset of the TDA9875 */ | |
49 | struct tda9875 { | |
50 | int mode; | |
51 | int rvol, lvol; | |
52 | int bass, treble; | |
53 | struct i2c_client c; | |
54 | }; | |
55 | ||
56 | static struct i2c_driver driver; | |
57 | static struct i2c_client client_template; | |
58 | ||
59 | #define dprintk if (debug) printk | |
60 | ||
61 | /* The TDA9875 is made by Philips Semiconductor | |
62 | * http://www.semiconductors.philips.com | |
63 | * TDA9875: I2C-bus controlled DSP audio processor, FM demodulator | |
64 | * | |
65 | */ | |
66 | ||
67 | /* subaddresses for TDA9875 */ | |
68 | #define TDA9875_MUT 0x12 /*General mute (value --> 0b11001100*/ | |
69 | #define TDA9875_CFG 0x01 /* Config register (value --> 0b00000000 */ | |
70 | #define TDA9875_DACOS 0x13 /*DAC i/o select (ADC) 0b0000100*/ | |
71 | #define TDA9875_LOSR 0x16 /*Line output select regirter 0b0100 0001*/ | |
72 | ||
73 | #define TDA9875_CH1V 0x0c /*Channel 1 volume (mute)*/ | |
74 | #define TDA9875_CH2V 0x0d /*Channel 2 volume (mute)*/ | |
75 | #define TDA9875_SC1 0x14 /*SCART 1 in (mono)*/ | |
76 | #define TDA9875_SC2 0x15 /*SCART 2 in (mono)*/ | |
77 | ||
78 | #define TDA9875_ADCIS 0x17 /*ADC input select (mono) 0b0110 000*/ | |
79 | #define TDA9875_AER 0x19 /*Audio effect (AVL+Pseudo) 0b0000 0110*/ | |
80 | #define TDA9875_MCS 0x18 /*Main channel select (DAC) 0b0000100*/ | |
81 | #define TDA9875_MVL 0x1a /* Main volume gauche */ | |
82 | #define TDA9875_MVR 0x1b /* Main volume droite */ | |
83 | #define TDA9875_MBA 0x1d /* Main Basse */ | |
84 | #define TDA9875_MTR 0x1e /* Main treble */ | |
85 | #define TDA9875_ACS 0x1f /* Auxilary channel select (FM) 0b0000000*/ | |
86 | #define TDA9875_AVL 0x20 /* Auxilary volume gauche */ | |
87 | #define TDA9875_AVR 0x21 /* Auxilary volume droite */ | |
88 | #define TDA9875_ABA 0x22 /* Auxilary Basse */ | |
89 | #define TDA9875_ATR 0x23 /* Auxilary treble */ | |
90 | ||
91 | #define TDA9875_MSR 0x02 /* Monitor select register */ | |
92 | #define TDA9875_C1MSB 0x03 /* Carrier 1 (FM) frequency register MSB */ | |
93 | #define TDA9875_C1MIB 0x04 /* Carrier 1 (FM) frequency register (16-8]b */ | |
94 | #define TDA9875_C1LSB 0x05 /* Carrier 1 (FM) frequency register LSB */ | |
95 | #define TDA9875_C2MSB 0x06 /* Carrier 2 (nicam) frequency register MSB */ | |
96 | #define TDA9875_C2MIB 0x07 /* Carrier 2 (nicam) frequency register (16-8]b */ | |
97 | #define TDA9875_C2LSB 0x08 /* Carrier 2 (nicam) frequency register LSB */ | |
98 | #define TDA9875_DCR 0x09 /* Demodulateur configuration regirter*/ | |
99 | #define TDA9875_DEEM 0x0a /* FM de-emphasis regirter*/ | |
100 | #define TDA9875_FMAT 0x0b /* FM Matrix regirter*/ | |
101 | ||
102 | /* values */ | |
103 | #define TDA9875_MUTE_ON 0xff /* general mute */ | |
104 | #define TDA9875_MUTE_OFF 0xcc /* general no mute */ | |
105 | ||
106 | ||
107 | ||
108 | /* Begin code */ | |
109 | ||
110 | static int tda9875_write(struct i2c_client *client, int subaddr, unsigned char val) | |
111 | { | |
112 | unsigned char buffer[2]; | |
113 | dprintk("In tda9875_write\n"); | |
114 | dprintk("Writing %d 0x%x\n", subaddr, val); | |
115 | buffer[0] = subaddr; | |
116 | buffer[1] = val; | |
117 | if (2 != i2c_master_send(client,buffer,2)) { | |
118 | printk(KERN_WARNING "tda9875: I/O error, trying (write %d 0x%x)\n", | |
119 | subaddr, val); | |
120 | return -1; | |
121 | } | |
122 | return 0; | |
123 | } | |
124 | ||
1da177e4 LT |
125 | |
126 | static int i2c_read_register(struct i2c_adapter *adap, int addr, int reg) | |
127 | { | |
4ac97914 MCC |
128 | unsigned char write[1]; |
129 | unsigned char read[1]; | |
130 | struct i2c_msg msgs[2] = { | |
131 | { addr, 0, 1, write }, | |
132 | { addr, I2C_M_RD, 1, read } | |
133 | }; | |
134 | write[0] = reg; | |
135 | ||
136 | if (2 != i2c_transfer(adap,msgs,2)) { | |
137 | printk(KERN_WARNING "tda9875: I/O error (read2)\n"); | |
138 | return -1; | |
139 | } | |
140 | dprintk("tda9875: chip_read2: reg%d=0x%x\n",reg,read[0]); | |
141 | return read[0]; | |
1da177e4 LT |
142 | } |
143 | ||
144 | static void tda9875_set(struct i2c_client *client) | |
145 | { | |
146 | struct tda9875 *tda = i2c_get_clientdata(client); | |
147 | unsigned char a; | |
148 | ||
149 | dprintk(KERN_DEBUG "tda9875_set(%04x,%04x,%04x,%04x)\n", | |
150 | tda->lvol,tda->rvol,tda->bass,tda->treble); | |
151 | ||
152 | ||
153 | a = tda->lvol & 0xff; | |
154 | tda9875_write(client, TDA9875_MVL, a); | |
155 | a =tda->rvol & 0xff; | |
156 | tda9875_write(client, TDA9875_MVR, a); | |
157 | a =tda->bass & 0xff; | |
158 | tda9875_write(client, TDA9875_MBA, a); | |
159 | a =tda->treble & 0xff; | |
160 | tda9875_write(client, TDA9875_MTR, a); | |
161 | } | |
162 | ||
163 | static void do_tda9875_init(struct i2c_client *client) | |
164 | { | |
165 | struct tda9875 *t = i2c_get_clientdata(client); | |
166 | dprintk("In tda9875_init\n"); | |
167 | tda9875_write(client, TDA9875_CFG, 0xd0 ); /*reg de config 0 (reset)*/ | |
168 | tda9875_write(client, TDA9875_MSR, 0x03 ); /* Monitor 0b00000XXX*/ | |
169 | tda9875_write(client, TDA9875_C1MSB, 0x00 ); /*Car1(FM) MSB XMHz*/ | |
170 | tda9875_write(client, TDA9875_C1MIB, 0x00 ); /*Car1(FM) MIB XMHz*/ | |
171 | tda9875_write(client, TDA9875_C1LSB, 0x00 ); /*Car1(FM) LSB XMHz*/ | |
172 | tda9875_write(client, TDA9875_C2MSB, 0x00 ); /*Car2(NICAM) MSB XMHz*/ | |
173 | tda9875_write(client, TDA9875_C2MIB, 0x00 ); /*Car2(NICAM) MIB XMHz*/ | |
174 | tda9875_write(client, TDA9875_C2LSB, 0x00 ); /*Car2(NICAM) LSB XMHz*/ | |
175 | tda9875_write(client, TDA9875_DCR, 0x00 ); /*Demod config 0x00*/ | |
176 | tda9875_write(client, TDA9875_DEEM, 0x44 ); /*DE-Emph 0b0100 0100*/ | |
177 | tda9875_write(client, TDA9875_FMAT, 0x00 ); /*FM Matrix reg 0x00*/ | |
178 | tda9875_write(client, TDA9875_SC1, 0x00 ); /* SCART 1 (SC1)*/ | |
179 | tda9875_write(client, TDA9875_SC2, 0x01 ); /* SCART 2 (sc2)*/ | |
180 | ||
181 | tda9875_write(client, TDA9875_CH1V, 0x10 ); /* Channel volume 1 mute*/ | |
182 | tda9875_write(client, TDA9875_CH2V, 0x10 ); /* Channel volume 2 mute */ | |
183 | tda9875_write(client, TDA9875_DACOS, 0x02 ); /* sig DAC i/o(in:nicam)*/ | |
184 | tda9875_write(client, TDA9875_ADCIS, 0x6f ); /* sig ADC input(in:mono)*/ | |
185 | tda9875_write(client, TDA9875_LOSR, 0x00 ); /* line out (in:mono)*/ | |
4ac97914 | 186 | tda9875_write(client, TDA9875_AER, 0x00 ); /*06 Effect (AVL+PSEUDO) */ |
1da177e4 LT |
187 | tda9875_write(client, TDA9875_MCS, 0x44 ); /* Main ch select (DAC) */ |
188 | tda9875_write(client, TDA9875_MVL, 0x03 ); /* Vol Main left 10dB */ | |
189 | tda9875_write(client, TDA9875_MVR, 0x03 ); /* Vol Main right 10dB*/ | |
190 | tda9875_write(client, TDA9875_MBA, 0x00 ); /* Main Bass Main 0dB*/ | |
191 | tda9875_write(client, TDA9875_MTR, 0x00 ); /* Main Treble Main 0dB*/ | |
192 | tda9875_write(client, TDA9875_ACS, 0x44 ); /* Aux chan select (dac)*/ | |
193 | tda9875_write(client, TDA9875_AVL, 0x00 ); /* Vol Aux left 0dB*/ | |
194 | tda9875_write(client, TDA9875_AVR, 0x00 ); /* Vol Aux right 0dB*/ | |
195 | tda9875_write(client, TDA9875_ABA, 0x00 ); /* Aux Bass Main 0dB*/ | |
196 | tda9875_write(client, TDA9875_ATR, 0x00 ); /* Aux Aigus Main 0dB*/ | |
197 | ||
198 | tda9875_write(client, TDA9875_MUT, 0xcc ); /* General mute */ | |
199 | ||
200 | t->mode=AUDIO_UNMUTE; | |
201 | t->lvol=t->rvol =0; /* 0dB */ | |
4ac97914 | 202 | t->bass=0; /* 0dB */ |
1da177e4 LT |
203 | t->treble=0; /* 0dB */ |
204 | tda9875_set(client); | |
205 | ||
206 | } | |
207 | ||
208 | ||
209 | /* *********************** * | |
210 | * i2c interface functions * | |
211 | * *********************** */ | |
212 | ||
213 | static int tda9875_checkit(struct i2c_adapter *adap, int addr) | |
214 | { | |
215 | int dic,rev; | |
216 | ||
217 | dic=i2c_read_register(adap,addr,254); | |
218 | rev=i2c_read_register(adap,addr,255); | |
219 | ||
220 | if(dic==0 || dic==2) { // tda9875 and tda9875A | |
221 | printk("tda9875: TDA9875%s Rev.%d detected at 0x%x\n", | |
222 | dic==0?"":"A", rev,addr<<1); | |
223 | return 1; | |
224 | } | |
225 | printk("tda9875: no such chip at 0x%x (dic=0x%x rev=0x%x)\n",addr<<1,dic,rev); | |
226 | return(0); | |
227 | } | |
228 | ||
229 | static int tda9875_attach(struct i2c_adapter *adap, int addr, int kind) | |
230 | { | |
231 | struct tda9875 *t; | |
232 | struct i2c_client *client; | |
233 | dprintk("In tda9875_attach\n"); | |
234 | ||
235 | t = kmalloc(sizeof *t,GFP_KERNEL); | |
236 | if (!t) | |
237 | return -ENOMEM; | |
238 | memset(t,0,sizeof *t); | |
239 | ||
240 | client = &t->c; | |
4ac97914 MCC |
241 | memcpy(client,&client_template,sizeof(struct i2c_client)); |
242 | client->adapter = adap; | |
243 | client->addr = addr; | |
1da177e4 LT |
244 | i2c_set_clientdata(client, t); |
245 | ||
246 | if(!tda9875_checkit(adap,addr)) { | |
247 | kfree(t); | |
248 | return 1; | |
249 | } | |
250 | ||
251 | do_tda9875_init(client); | |
252 | printk(KERN_INFO "tda9875: init\n"); | |
253 | ||
254 | i2c_attach_client(client); | |
255 | return 0; | |
256 | } | |
257 | ||
258 | static int tda9875_probe(struct i2c_adapter *adap) | |
259 | { | |
260 | #ifdef I2C_CLASS_TV_ANALOG | |
261 | if (adap->class & I2C_CLASS_TV_ANALOG) | |
262 | return i2c_probe(adap, &addr_data, tda9875_attach); | |
263 | #else | |
c7a46533 | 264 | if (adap->id == I2C_HW_B_BT848) |
1da177e4 LT |
265 | return i2c_probe(adap, &addr_data, tda9875_attach); |
266 | #endif | |
267 | return 0; | |
268 | } | |
269 | ||
270 | static int tda9875_detach(struct i2c_client *client) | |
271 | { | |
272 | struct tda9875 *t = i2c_get_clientdata(client); | |
273 | ||
274 | do_tda9875_init(client); | |
275 | i2c_detach_client(client); | |
276 | ||
277 | kfree(t); | |
278 | return 0; | |
279 | } | |
280 | ||
281 | static int tda9875_command(struct i2c_client *client, | |
282 | unsigned int cmd, void *arg) | |
283 | { | |
284 | struct tda9875 *t = i2c_get_clientdata(client); | |
285 | ||
286 | dprintk("In tda9875_command...\n"); | |
287 | ||
288 | switch (cmd) { | |
4ac97914 | 289 | /* --- v4l ioctls --- */ |
1da177e4 LT |
290 | /* take care: bttv does userspace copying, we'll get a |
291 | kernel pointer here... */ | |
292 | case VIDIOCGAUDIO: | |
293 | { | |
294 | struct video_audio *va = arg; | |
295 | int left,right; | |
296 | ||
297 | dprintk("VIDIOCGAUDIO\n"); | |
298 | ||
299 | va->flags |= VIDEO_AUDIO_VOLUME | | |
300 | VIDEO_AUDIO_BASS | | |
301 | VIDEO_AUDIO_TREBLE; | |
302 | ||
303 | /* min is -84 max is 24 */ | |
304 | left = (t->lvol+84)*606; | |
305 | right = (t->rvol+84)*606; | |
306 | va->volume=max(left,right); | |
307 | va->balance=(32768*min(left,right))/ | |
308 | (va->volume ? va->volume : 1); | |
309 | va->balance=(left<right)? | |
310 | (65535-va->balance) : va->balance; | |
311 | va->bass = (t->bass+12)*2427; /* min -12 max +15 */ | |
312 | va->treble = (t->treble+12)*2730;/* min -12 max +12 */ | |
313 | va->mode |= VIDEO_SOUND_MONO; | |
314 | ||
315 | break; /* VIDIOCGAUDIO case */ | |
316 | } | |
317 | ||
318 | case VIDIOCSAUDIO: | |
319 | { | |
320 | struct video_audio *va = arg; | |
321 | int left,right; | |
322 | ||
323 | dprintk("VIDEOCSAUDIO...\n"); | |
324 | left = (min(65536 - va->balance,32768) * | |
325 | va->volume) / 32768; | |
326 | right = (min(va->balance,(__u16)32768) * | |
327 | va->volume) / 32768; | |
328 | t->lvol = ((left/606)-84) & 0xff; | |
329 | if (t->lvol > 24) | |
330 | t->lvol = 24; | |
331 | if (t->lvol < -84) | |
332 | t->lvol = -84 & 0xff; | |
333 | ||
334 | t->rvol = ((right/606)-84) & 0xff; | |
335 | if (t->rvol > 24) | |
336 | t->rvol = 24; | |
337 | if (t->rvol < -84) | |
338 | t->rvol = -84 & 0xff; | |
339 | ||
340 | t->bass = ((va->bass/2400)-12) & 0xff; | |
341 | if (t->bass > 15) | |
342 | t->bass = 15; | |
343 | if (t->bass < -12) | |
344 | t->bass = -12 & 0xff; | |
345 | ||
346 | t->treble = ((va->treble/2700)-12) & 0xff; | |
347 | if (t->treble > 12) | |
348 | t->treble = 12; | |
349 | if (t->treble < -12) | |
350 | t->treble = -12 & 0xff; | |
351 | ||
352 | ||
353 | ||
354 | //printk("tda9875 bal:%04x vol:%04x bass:%04x treble:%04x\n",va->balance,va->volume,va->bass,va->treble); | |
355 | ||
356 | ||
4ac97914 | 357 | tda9875_set(client); |
1da177e4 LT |
358 | |
359 | break; | |
360 | ||
361 | } /* end of VIDEOCSAUDIO case */ | |
362 | ||
363 | default: /* Not VIDEOCGAUDIO or VIDEOCSAUDIO */ | |
364 | ||
365 | /* nothing */ | |
366 | dprintk("Default\n"); | |
367 | ||
368 | } /* end of (cmd) switch */ | |
369 | ||
370 | return 0; | |
371 | } | |
372 | ||
373 | ||
374 | static struct i2c_driver driver = { | |
375 | .owner = THIS_MODULE, | |
4ac97914 MCC |
376 | .name = "i2c tda9875 driver", |
377 | .id = I2C_DRIVERID_TDA9875, | |
1da177e4 | 378 | .attach_adapter = tda9875_probe, |
4ac97914 MCC |
379 | .detach_client = tda9875_detach, |
380 | .command = tda9875_command, | |
1da177e4 LT |
381 | }; |
382 | ||
383 | static struct i2c_client client_template = | |
384 | { | |
4ac97914 MCC |
385 | .name = "tda9875", |
386 | .driver = &driver, | |
1da177e4 LT |
387 | }; |
388 | ||
389 | static int __init tda9875_init(void) | |
390 | { | |
391 | return i2c_add_driver(&driver); | |
392 | } | |
393 | ||
394 | static void __exit tda9875_fini(void) | |
395 | { | |
396 | i2c_del_driver(&driver); | |
397 | } | |
398 | ||
399 | module_init(tda9875_init); | |
400 | module_exit(tda9875_fini); | |
401 | ||
402 | /* | |
403 | * Local variables: | |
404 | * c-basic-offset: 8 | |
405 | * End: | |
406 | */ | |
407 |