Commit | Line | Data |
---|---|---|
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> | |
35 | #include <media/id.h> | |
36 | ||
37 | static int debug; /* insmod parameter */ | |
38 | module_param(debug, int, S_IRUGO | S_IWUSR); | |
39 | MODULE_LICENSE("GPL"); | |
40 | ||
41 | ||
42 | /* Addresses to scan */ | |
43 | static unsigned short normal_i2c[] = { | |
44 | I2C_TDA9875 >> 1, | |
45 | I2C_CLIENT_END | |
46 | }; | |
1da177e4 LT |
47 | I2C_CLIENT_INSMOD; |
48 | ||
49 | /* This is a superset of the TDA9875 */ | |
50 | struct tda9875 { | |
51 | int mode; | |
52 | int rvol, lvol; | |
53 | int bass, treble; | |
54 | struct i2c_client c; | |
55 | }; | |
56 | ||
57 | static struct i2c_driver driver; | |
58 | static struct i2c_client client_template; | |
59 | ||
60 | #define dprintk if (debug) printk | |
61 | ||
62 | /* The TDA9875 is made by Philips Semiconductor | |
63 | * http://www.semiconductors.philips.com | |
64 | * TDA9875: I2C-bus controlled DSP audio processor, FM demodulator | |
65 | * | |
66 | */ | |
67 | ||
68 | /* subaddresses for TDA9875 */ | |
69 | #define TDA9875_MUT 0x12 /*General mute (value --> 0b11001100*/ | |
70 | #define TDA9875_CFG 0x01 /* Config register (value --> 0b00000000 */ | |
71 | #define TDA9875_DACOS 0x13 /*DAC i/o select (ADC) 0b0000100*/ | |
72 | #define TDA9875_LOSR 0x16 /*Line output select regirter 0b0100 0001*/ | |
73 | ||
74 | #define TDA9875_CH1V 0x0c /*Channel 1 volume (mute)*/ | |
75 | #define TDA9875_CH2V 0x0d /*Channel 2 volume (mute)*/ | |
76 | #define TDA9875_SC1 0x14 /*SCART 1 in (mono)*/ | |
77 | #define TDA9875_SC2 0x15 /*SCART 2 in (mono)*/ | |
78 | ||
79 | #define TDA9875_ADCIS 0x17 /*ADC input select (mono) 0b0110 000*/ | |
80 | #define TDA9875_AER 0x19 /*Audio effect (AVL+Pseudo) 0b0000 0110*/ | |
81 | #define TDA9875_MCS 0x18 /*Main channel select (DAC) 0b0000100*/ | |
82 | #define TDA9875_MVL 0x1a /* Main volume gauche */ | |
83 | #define TDA9875_MVR 0x1b /* Main volume droite */ | |
84 | #define TDA9875_MBA 0x1d /* Main Basse */ | |
85 | #define TDA9875_MTR 0x1e /* Main treble */ | |
86 | #define TDA9875_ACS 0x1f /* Auxilary channel select (FM) 0b0000000*/ | |
87 | #define TDA9875_AVL 0x20 /* Auxilary volume gauche */ | |
88 | #define TDA9875_AVR 0x21 /* Auxilary volume droite */ | |
89 | #define TDA9875_ABA 0x22 /* Auxilary Basse */ | |
90 | #define TDA9875_ATR 0x23 /* Auxilary treble */ | |
91 | ||
92 | #define TDA9875_MSR 0x02 /* Monitor select register */ | |
93 | #define TDA9875_C1MSB 0x03 /* Carrier 1 (FM) frequency register MSB */ | |
94 | #define TDA9875_C1MIB 0x04 /* Carrier 1 (FM) frequency register (16-8]b */ | |
95 | #define TDA9875_C1LSB 0x05 /* Carrier 1 (FM) frequency register LSB */ | |
96 | #define TDA9875_C2MSB 0x06 /* Carrier 2 (nicam) frequency register MSB */ | |
97 | #define TDA9875_C2MIB 0x07 /* Carrier 2 (nicam) frequency register (16-8]b */ | |
98 | #define TDA9875_C2LSB 0x08 /* Carrier 2 (nicam) frequency register LSB */ | |
99 | #define TDA9875_DCR 0x09 /* Demodulateur configuration regirter*/ | |
100 | #define TDA9875_DEEM 0x0a /* FM de-emphasis regirter*/ | |
101 | #define TDA9875_FMAT 0x0b /* FM Matrix regirter*/ | |
102 | ||
103 | /* values */ | |
104 | #define TDA9875_MUTE_ON 0xff /* general mute */ | |
105 | #define TDA9875_MUTE_OFF 0xcc /* general no mute */ | |
106 | ||
107 | ||
108 | ||
109 | /* Begin code */ | |
110 | ||
111 | static int tda9875_write(struct i2c_client *client, int subaddr, unsigned char val) | |
112 | { | |
113 | unsigned char buffer[2]; | |
114 | dprintk("In tda9875_write\n"); | |
115 | dprintk("Writing %d 0x%x\n", subaddr, val); | |
116 | buffer[0] = subaddr; | |
117 | buffer[1] = val; | |
118 | if (2 != i2c_master_send(client,buffer,2)) { | |
119 | printk(KERN_WARNING "tda9875: I/O error, trying (write %d 0x%x)\n", | |
120 | subaddr, val); | |
121 | return -1; | |
122 | } | |
123 | return 0; | |
124 | } | |
125 | ||
1da177e4 LT |
126 | |
127 | static int i2c_read_register(struct i2c_adapter *adap, int addr, int reg) | |
128 | { | |
129 | unsigned char write[1]; | |
130 | unsigned char read[1]; | |
131 | struct i2c_msg msgs[2] = { | |
132 | { addr, 0, 1, write }, | |
133 | { addr, I2C_M_RD, 1, read } | |
134 | }; | |
135 | write[0] = reg; | |
136 | ||
137 | if (2 != i2c_transfer(adap,msgs,2)) { | |
138 | printk(KERN_WARNING "tda9875: I/O error (read2)\n"); | |
139 | return -1; | |
140 | } | |
141 | dprintk("tda9875: chip_read2: reg%d=0x%x\n",reg,read[0]); | |
142 | return read[0]; | |
143 | } | |
144 | ||
145 | static void tda9875_set(struct i2c_client *client) | |
146 | { | |
147 | struct tda9875 *tda = i2c_get_clientdata(client); | |
148 | unsigned char a; | |
149 | ||
150 | dprintk(KERN_DEBUG "tda9875_set(%04x,%04x,%04x,%04x)\n", | |
151 | tda->lvol,tda->rvol,tda->bass,tda->treble); | |
152 | ||
153 | ||
154 | a = tda->lvol & 0xff; | |
155 | tda9875_write(client, TDA9875_MVL, a); | |
156 | a =tda->rvol & 0xff; | |
157 | tda9875_write(client, TDA9875_MVR, a); | |
158 | a =tda->bass & 0xff; | |
159 | tda9875_write(client, TDA9875_MBA, a); | |
160 | a =tda->treble & 0xff; | |
161 | tda9875_write(client, TDA9875_MTR, a); | |
162 | } | |
163 | ||
164 | static void do_tda9875_init(struct i2c_client *client) | |
165 | { | |
166 | struct tda9875 *t = i2c_get_clientdata(client); | |
167 | dprintk("In tda9875_init\n"); | |
168 | tda9875_write(client, TDA9875_CFG, 0xd0 ); /*reg de config 0 (reset)*/ | |
169 | tda9875_write(client, TDA9875_MSR, 0x03 ); /* Monitor 0b00000XXX*/ | |
170 | tda9875_write(client, TDA9875_C1MSB, 0x00 ); /*Car1(FM) MSB XMHz*/ | |
171 | tda9875_write(client, TDA9875_C1MIB, 0x00 ); /*Car1(FM) MIB XMHz*/ | |
172 | tda9875_write(client, TDA9875_C1LSB, 0x00 ); /*Car1(FM) LSB XMHz*/ | |
173 | tda9875_write(client, TDA9875_C2MSB, 0x00 ); /*Car2(NICAM) MSB XMHz*/ | |
174 | tda9875_write(client, TDA9875_C2MIB, 0x00 ); /*Car2(NICAM) MIB XMHz*/ | |
175 | tda9875_write(client, TDA9875_C2LSB, 0x00 ); /*Car2(NICAM) LSB XMHz*/ | |
176 | tda9875_write(client, TDA9875_DCR, 0x00 ); /*Demod config 0x00*/ | |
177 | tda9875_write(client, TDA9875_DEEM, 0x44 ); /*DE-Emph 0b0100 0100*/ | |
178 | tda9875_write(client, TDA9875_FMAT, 0x00 ); /*FM Matrix reg 0x00*/ | |
179 | tda9875_write(client, TDA9875_SC1, 0x00 ); /* SCART 1 (SC1)*/ | |
180 | tda9875_write(client, TDA9875_SC2, 0x01 ); /* SCART 2 (sc2)*/ | |
181 | ||
182 | tda9875_write(client, TDA9875_CH1V, 0x10 ); /* Channel volume 1 mute*/ | |
183 | tda9875_write(client, TDA9875_CH2V, 0x10 ); /* Channel volume 2 mute */ | |
184 | tda9875_write(client, TDA9875_DACOS, 0x02 ); /* sig DAC i/o(in:nicam)*/ | |
185 | tda9875_write(client, TDA9875_ADCIS, 0x6f ); /* sig ADC input(in:mono)*/ | |
186 | tda9875_write(client, TDA9875_LOSR, 0x00 ); /* line out (in:mono)*/ | |
187 | tda9875_write(client, TDA9875_AER, 0x00 ); /*06 Effect (AVL+PSEUDO) */ | |
188 | tda9875_write(client, TDA9875_MCS, 0x44 ); /* Main ch select (DAC) */ | |
189 | tda9875_write(client, TDA9875_MVL, 0x03 ); /* Vol Main left 10dB */ | |
190 | tda9875_write(client, TDA9875_MVR, 0x03 ); /* Vol Main right 10dB*/ | |
191 | tda9875_write(client, TDA9875_MBA, 0x00 ); /* Main Bass Main 0dB*/ | |
192 | tda9875_write(client, TDA9875_MTR, 0x00 ); /* Main Treble Main 0dB*/ | |
193 | tda9875_write(client, TDA9875_ACS, 0x44 ); /* Aux chan select (dac)*/ | |
194 | tda9875_write(client, TDA9875_AVL, 0x00 ); /* Vol Aux left 0dB*/ | |
195 | tda9875_write(client, TDA9875_AVR, 0x00 ); /* Vol Aux right 0dB*/ | |
196 | tda9875_write(client, TDA9875_ABA, 0x00 ); /* Aux Bass Main 0dB*/ | |
197 | tda9875_write(client, TDA9875_ATR, 0x00 ); /* Aux Aigus Main 0dB*/ | |
198 | ||
199 | tda9875_write(client, TDA9875_MUT, 0xcc ); /* General mute */ | |
200 | ||
201 | t->mode=AUDIO_UNMUTE; | |
202 | t->lvol=t->rvol =0; /* 0dB */ | |
203 | t->bass=0; /* 0dB */ | |
204 | t->treble=0; /* 0dB */ | |
205 | tda9875_set(client); | |
206 | ||
207 | } | |
208 | ||
209 | ||
210 | /* *********************** * | |
211 | * i2c interface functions * | |
212 | * *********************** */ | |
213 | ||
214 | static int tda9875_checkit(struct i2c_adapter *adap, int addr) | |
215 | { | |
216 | int dic,rev; | |
217 | ||
218 | dic=i2c_read_register(adap,addr,254); | |
219 | rev=i2c_read_register(adap,addr,255); | |
220 | ||
221 | if(dic==0 || dic==2) { // tda9875 and tda9875A | |
222 | printk("tda9875: TDA9875%s Rev.%d detected at 0x%x\n", | |
223 | dic==0?"":"A", rev,addr<<1); | |
224 | return 1; | |
225 | } | |
226 | printk("tda9875: no such chip at 0x%x (dic=0x%x rev=0x%x)\n",addr<<1,dic,rev); | |
227 | return(0); | |
228 | } | |
229 | ||
230 | static int tda9875_attach(struct i2c_adapter *adap, int addr, int kind) | |
231 | { | |
232 | struct tda9875 *t; | |
233 | struct i2c_client *client; | |
234 | dprintk("In tda9875_attach\n"); | |
235 | ||
236 | t = kmalloc(sizeof *t,GFP_KERNEL); | |
237 | if (!t) | |
238 | return -ENOMEM; | |
239 | memset(t,0,sizeof *t); | |
240 | ||
241 | client = &t->c; | |
242 | memcpy(client,&client_template,sizeof(struct i2c_client)); | |
243 | client->adapter = adap; | |
244 | client->addr = addr; | |
245 | i2c_set_clientdata(client, t); | |
246 | ||
247 | if(!tda9875_checkit(adap,addr)) { | |
248 | kfree(t); | |
249 | return 1; | |
250 | } | |
251 | ||
252 | do_tda9875_init(client); | |
253 | printk(KERN_INFO "tda9875: init\n"); | |
254 | ||
255 | i2c_attach_client(client); | |
256 | return 0; | |
257 | } | |
258 | ||
259 | static int tda9875_probe(struct i2c_adapter *adap) | |
260 | { | |
261 | #ifdef I2C_CLASS_TV_ANALOG | |
262 | if (adap->class & I2C_CLASS_TV_ANALOG) | |
263 | return i2c_probe(adap, &addr_data, tda9875_attach); | |
264 | #else | |
265 | if (adap->id == (I2C_ALGO_BIT | I2C_HW_B_BT848)) | |
266 | return i2c_probe(adap, &addr_data, tda9875_attach); | |
267 | #endif | |
268 | return 0; | |
269 | } | |
270 | ||
271 | static int tda9875_detach(struct i2c_client *client) | |
272 | { | |
273 | struct tda9875 *t = i2c_get_clientdata(client); | |
274 | ||
275 | do_tda9875_init(client); | |
276 | i2c_detach_client(client); | |
277 | ||
278 | kfree(t); | |
279 | return 0; | |
280 | } | |
281 | ||
282 | static int tda9875_command(struct i2c_client *client, | |
283 | unsigned int cmd, void *arg) | |
284 | { | |
285 | struct tda9875 *t = i2c_get_clientdata(client); | |
286 | ||
287 | dprintk("In tda9875_command...\n"); | |
288 | ||
289 | switch (cmd) { | |
290 | /* --- v4l ioctls --- */ | |
291 | /* take care: bttv does userspace copying, we'll get a | |
292 | kernel pointer here... */ | |
293 | case VIDIOCGAUDIO: | |
294 | { | |
295 | struct video_audio *va = arg; | |
296 | int left,right; | |
297 | ||
298 | dprintk("VIDIOCGAUDIO\n"); | |
299 | ||
300 | va->flags |= VIDEO_AUDIO_VOLUME | | |
301 | VIDEO_AUDIO_BASS | | |
302 | VIDEO_AUDIO_TREBLE; | |
303 | ||
304 | /* min is -84 max is 24 */ | |
305 | left = (t->lvol+84)*606; | |
306 | right = (t->rvol+84)*606; | |
307 | va->volume=max(left,right); | |
308 | va->balance=(32768*min(left,right))/ | |
309 | (va->volume ? va->volume : 1); | |
310 | va->balance=(left<right)? | |
311 | (65535-va->balance) : va->balance; | |
312 | va->bass = (t->bass+12)*2427; /* min -12 max +15 */ | |
313 | va->treble = (t->treble+12)*2730;/* min -12 max +12 */ | |
314 | va->mode |= VIDEO_SOUND_MONO; | |
315 | ||
316 | break; /* VIDIOCGAUDIO case */ | |
317 | } | |
318 | ||
319 | case VIDIOCSAUDIO: | |
320 | { | |
321 | struct video_audio *va = arg; | |
322 | int left,right; | |
323 | ||
324 | dprintk("VIDEOCSAUDIO...\n"); | |
325 | left = (min(65536 - va->balance,32768) * | |
326 | va->volume) / 32768; | |
327 | right = (min(va->balance,(__u16)32768) * | |
328 | va->volume) / 32768; | |
329 | t->lvol = ((left/606)-84) & 0xff; | |
330 | if (t->lvol > 24) | |
331 | t->lvol = 24; | |
332 | if (t->lvol < -84) | |
333 | t->lvol = -84 & 0xff; | |
334 | ||
335 | t->rvol = ((right/606)-84) & 0xff; | |
336 | if (t->rvol > 24) | |
337 | t->rvol = 24; | |
338 | if (t->rvol < -84) | |
339 | t->rvol = -84 & 0xff; | |
340 | ||
341 | t->bass = ((va->bass/2400)-12) & 0xff; | |
342 | if (t->bass > 15) | |
343 | t->bass = 15; | |
344 | if (t->bass < -12) | |
345 | t->bass = -12 & 0xff; | |
346 | ||
347 | t->treble = ((va->treble/2700)-12) & 0xff; | |
348 | if (t->treble > 12) | |
349 | t->treble = 12; | |
350 | if (t->treble < -12) | |
351 | t->treble = -12 & 0xff; | |
352 | ||
353 | ||
354 | ||
355 | //printk("tda9875 bal:%04x vol:%04x bass:%04x treble:%04x\n",va->balance,va->volume,va->bass,va->treble); | |
356 | ||
357 | ||
358 | tda9875_set(client); | |
359 | ||
360 | break; | |
361 | ||
362 | } /* end of VIDEOCSAUDIO case */ | |
363 | ||
364 | default: /* Not VIDEOCGAUDIO or VIDEOCSAUDIO */ | |
365 | ||
366 | /* nothing */ | |
367 | dprintk("Default\n"); | |
368 | ||
369 | } /* end of (cmd) switch */ | |
370 | ||
371 | return 0; | |
372 | } | |
373 | ||
374 | ||
375 | static struct i2c_driver driver = { | |
376 | .owner = THIS_MODULE, | |
377 | .name = "i2c tda9875 driver", | |
378 | .id = I2C_DRIVERID_TDA9875, | |
379 | .flags = I2C_DF_NOTIFY, | |
380 | .attach_adapter = tda9875_probe, | |
381 | .detach_client = tda9875_detach, | |
382 | .command = tda9875_command, | |
383 | }; | |
384 | ||
385 | static struct i2c_client client_template = | |
386 | { | |
387 | I2C_DEVNAME("tda9875"), | |
388 | .driver = &driver, | |
389 | }; | |
390 | ||
391 | static int __init tda9875_init(void) | |
392 | { | |
393 | return i2c_add_driver(&driver); | |
394 | } | |
395 | ||
396 | static void __exit tda9875_fini(void) | |
397 | { | |
398 | i2c_del_driver(&driver); | |
399 | } | |
400 | ||
401 | module_init(tda9875_init); | |
402 | module_exit(tda9875_fini); | |
403 | ||
404 | /* | |
405 | * Local variables: | |
406 | * c-basic-offset: 8 | |
407 | * End: | |
408 | */ | |
409 |