Merge HEAD from master.kernel.org:/home/rmk/linux-2.6-serial.git
[linux-2.6] / drivers / media / video / tuner-simple.c
1 /*
2  * $Id: tuner-simple.c,v 1.43 2005/07/28 18:41:21 mchehab Exp $
3  *
4  * i2c tv tuner chip device driver
5  * controls all those simple 4-control-bytes style tuners.
6  */
7 #include <linux/delay.h>
8 #include <linux/i2c.h>
9 #include <linux/videodev.h>
10 #include <media/tuner.h>
11
12 /* ---------------------------------------------------------------------- */
13
14 /* tv standard selection for Temic 4046 FM5
15    this value takes the low bits of control byte 2
16    from datasheet Rev.01, Feb.00
17      standard     BG      I       L       L2      D
18      picture IF   38.9    38.9    38.9    33.95   38.9
19      sound 1      33.4    32.9    32.4    40.45   32.4
20      sound 2      33.16
21      NICAM        33.05   32.348  33.05           33.05
22  */
23 #define TEMIC_SET_PAL_I         0x05
24 #define TEMIC_SET_PAL_DK        0x09
25 #define TEMIC_SET_PAL_L         0x0a // SECAM ?
26 #define TEMIC_SET_PAL_L2        0x0b // change IF !
27 #define TEMIC_SET_PAL_BG        0x0c
28
29 /* tv tuner system standard selection for Philips FQ1216ME
30    this value takes the low bits of control byte 2
31    from datasheet "1999 Nov 16" (supersedes "1999 Mar 23")
32      standard           BG      DK      I       L       L`
33      picture carrier    38.90   38.90   38.90   38.90   33.95
34      colour             34.47   34.47   34.47   34.47   38.38
35      sound 1            33.40   32.40   32.90   32.40   40.45
36      sound 2            33.16   -       -       -       -
37      NICAM              33.05   33.05   32.35   33.05   39.80
38  */
39 #define PHILIPS_SET_PAL_I       0x01 /* Bit 2 always zero !*/
40 #define PHILIPS_SET_PAL_BGDK    0x09
41 #define PHILIPS_SET_PAL_L2      0x0a
42 #define PHILIPS_SET_PAL_L       0x0b
43
44 /* system switching for Philips FI1216MF MK2
45    from datasheet "1996 Jul 09",
46     standard         BG     L      L'
47     picture carrier  38.90  38.90  33.95
48     colour           34.47  34.37  38.38
49     sound 1          33.40  32.40  40.45
50     sound 2          33.16  -      -
51     NICAM            33.05  33.05  39.80
52  */
53 #define PHILIPS_MF_SET_BG       0x01 /* Bit 2 must be zero, Bit 3 is system output */
54 #define PHILIPS_MF_SET_PAL_L    0x03 // France
55 #define PHILIPS_MF_SET_PAL_L2   0x02 // L'
56
57 /* Control byte */
58
59 #define TUNER_RATIO_MASK        0x06 /* Bit cb1:cb2 */
60 #define TUNER_RATIO_SELECT_50   0x00
61 #define TUNER_RATIO_SELECT_32   0x02
62 #define TUNER_RATIO_SELECT_166  0x04
63 #define TUNER_RATIO_SELECT_62   0x06
64
65 #define TUNER_CHARGE_PUMP       0x40  /* Bit cb6 */
66
67 /* Status byte */
68
69 #define TUNER_POR         0x80
70 #define TUNER_FL          0x40
71 #define TUNER_MODE        0x38
72 #define TUNER_AFC         0x07
73 #define TUNER_SIGNAL      0x07
74 #define TUNER_STEREO      0x10
75
76 #define TUNER_PLL_LOCKED   0x40
77 #define TUNER_STEREO_MK3   0x04
78
79 /* ---------------------------------------------------------------------- */
80
81 struct tunertype
82 {
83         char *name;
84         unsigned char Vendor;
85         unsigned char Type;
86
87         unsigned short thresh1;  /*  band switch VHF_LO <=> VHF_HI  */
88         unsigned short thresh2;  /*  band switch VHF_HI <=> UHF     */
89         unsigned char VHF_L;
90         unsigned char VHF_H;
91         unsigned char UHF;
92         unsigned char config;
93         unsigned short IFPCoff; /* 622.4=16*38.90 MHz PAL,
94                                    732  =16*45.75 NTSCi,
95                                    940  =16*58.75 NTSC-Japan
96                                    704  =16*44    ATSC */
97 };
98
99 /*
100  *      The floats in the tuner struct are computed at compile time
101  *      by gcc and cast back to integers. Thus we don't violate the
102  *      "no float in kernel" rule.
103  */
104 static struct tunertype tuners[] = {
105         { "Temic PAL (4002 FH5)", TEMIC, PAL,
106           16*140.25,16*463.25,0x02,0x04,0x01,0x8e,623},
107         { "Philips PAL_I (FI1246 and compatibles)", Philips, PAL_I,
108           16*140.25,16*463.25,0xa0,0x90,0x30,0x8e,623},
109         { "Philips NTSC (FI1236,FM1236 and compatibles)", Philips, NTSC,
110           16*157.25,16*451.25,0xA0,0x90,0x30,0x8e,732},
111         { "Philips (SECAM+PAL_BG) (FI1216MF, FM1216MF, FR1216MF)", Philips, SECAM,
112           16*168.25,16*447.25,0xA7,0x97,0x37,0x8e,623},
113
114         { "NoTuner", NoTuner, NOTUNER,
115           0,0,0x00,0x00,0x00,0x00,0x00},
116         { "Philips PAL_BG (FI1216 and compatibles)", Philips, PAL,
117           16*168.25,16*447.25,0xA0,0x90,0x30,0x8e,623},
118         { "Temic NTSC (4032 FY5)", TEMIC, NTSC,
119           16*157.25,16*463.25,0x02,0x04,0x01,0x8e,732},
120         { "Temic PAL_I (4062 FY5)", TEMIC, PAL_I,
121           16*170.00,16*450.00,0x02,0x04,0x01,0x8e,623},
122
123         { "Temic NTSC (4036 FY5)", TEMIC, NTSC,
124           16*157.25,16*463.25,0xa0,0x90,0x30,0x8e,732},
125         { "Alps HSBH1", TEMIC, NTSC,
126           16*137.25,16*385.25,0x01,0x02,0x08,0x8e,732},
127         { "Alps TSBE1",TEMIC,PAL,
128           16*137.25,16*385.25,0x01,0x02,0x08,0x8e,732},
129         { "Alps TSBB5", Alps, PAL_I, /* tested (UK UHF) with Modulartech MM205 */
130           16*133.25,16*351.25,0x01,0x02,0x08,0x8e,632},
131
132         { "Alps TSBE5", Alps, PAL, /* untested - data sheet guess. Only IF differs. */
133           16*133.25,16*351.25,0x01,0x02,0x08,0x8e,622},
134         { "Alps TSBC5", Alps, PAL, /* untested - data sheet guess. Only IF differs. */
135           16*133.25,16*351.25,0x01,0x02,0x08,0x8e,608},
136         { "Temic PAL_BG (4006FH5)", TEMIC, PAL,
137           16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
138         { "Alps TSCH6",Alps,NTSC,
139           16*137.25,16*385.25,0x14,0x12,0x11,0x8e,732},
140
141         { "Temic PAL_DK (4016 FY5)",TEMIC,PAL,
142           16*168.25,16*456.25,0xa0,0x90,0x30,0x8e,623},
143         { "Philips NTSC_M (MK2)",Philips,NTSC,
144           16*160.00,16*454.00,0xa0,0x90,0x30,0x8e,732},
145         { "Temic PAL_I (4066 FY5)", TEMIC, PAL_I,
146           16*169.00, 16*454.00, 0xa0,0x90,0x30,0x8e,623},
147         { "Temic PAL* auto (4006 FN5)", TEMIC, PAL,
148           16*169.00, 16*454.00, 0xa0,0x90,0x30,0x8e,623},
149
150         { "Temic PAL_BG (4009 FR5) or PAL_I (4069 FR5)", TEMIC, PAL,
151           16*141.00, 16*464.00, 0xa0,0x90,0x30,0x8e,623},
152         { "Temic NTSC (4039 FR5)", TEMIC, NTSC,
153           16*158.00, 16*453.00, 0xa0,0x90,0x30,0x8e,732},
154         { "Temic PAL/SECAM multi (4046 FM5)", TEMIC, PAL,
155           16*169.00, 16*454.00, 0xa0,0x90,0x30,0x8e,623},
156         { "Philips PAL_DK (FI1256 and compatibles)", Philips, PAL,
157           16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
158
159         { "Philips PAL/SECAM multi (FQ1216ME)", Philips, PAL,
160           16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
161         { "LG PAL_I+FM (TAPC-I001D)", LGINNOTEK, PAL_I,
162           16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
163         { "LG PAL_I (TAPC-I701D)", LGINNOTEK, PAL_I,
164           16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
165         { "LG NTSC+FM (TPI8NSR01F)", LGINNOTEK, NTSC,
166           16*210.00,16*497.00,0xa0,0x90,0x30,0x8e,732},
167
168         { "LG PAL_BG+FM (TPI8PSB01D)", LGINNOTEK, PAL,
169           16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
170         { "LG PAL_BG (TPI8PSB11D)", LGINNOTEK, PAL,
171           16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
172         { "Temic PAL* auto + FM (4009 FN5)", TEMIC, PAL,
173           16*141.00, 16*464.00, 0xa0,0x90,0x30,0x8e,623},
174         { "SHARP NTSC_JP (2U5JF5540)", SHARP, NTSC, /* 940=16*58.75 NTSC@Japan */
175           16*137.25,16*317.25,0x01,0x02,0x08,0x8e,940 },
176
177         { "Samsung PAL TCPM9091PD27", Samsung, PAL,  /* from sourceforge v3tv */
178           16*169,16*464,0xA0,0x90,0x30,0x8e,623},
179         { "MT20xx universal", Microtune,PAL|NTSC,
180           /* see mt20xx.c for details */ },
181         { "Temic PAL_BG (4106 FH5)", TEMIC, PAL,
182           16*141.00, 16*464.00, 0xa0,0x90,0x30,0x8e,623},
183         { "Temic PAL_DK/SECAM_L (4012 FY5)", TEMIC, PAL,
184           16*140.25, 16*463.25, 0x02,0x04,0x01,0x8e,623},
185
186         { "Temic NTSC (4136 FY5)", TEMIC, NTSC,
187           16*158.00, 16*453.00, 0xa0,0x90,0x30,0x8e,732},
188         { "LG PAL (newer TAPC series)", LGINNOTEK, PAL,
189           16*170.00, 16*450.00, 0x01,0x02,0x08,0x8e,623},
190         { "Philips PAL/SECAM multi (FM1216ME MK3)", Philips, PAL,
191           16*160.00,16*442.00,0x01,0x02,0x04,0x8e,623 },
192         { "LG NTSC (newer TAPC series)", LGINNOTEK, NTSC,
193           16*170.00, 16*450.00, 0x01,0x02,0x08,0x8e,732},
194
195         { "HITACHI V7-J180AT", HITACHI, NTSC,
196           16*170.00, 16*450.00, 0x01,0x02,0x08,0x8e,940 },
197         { "Philips PAL_MK (FI1216 MK)", Philips, PAL,
198           16*140.25,16*463.25,0x01,0xc2,0xcf,0x8e,623},
199         { "Philips 1236D ATSC/NTSC daul in",Philips,ATSC,
200           16*157.25,16*454.00,0xa0,0x90,0x30,0x8e,732},
201         { "Philips NTSC MK3 (FM1236MK3 or FM1236/F)", Philips, NTSC,
202           16*160.00,16*442.00,0x01,0x02,0x04,0x8e,732},
203
204         { "Philips 4 in 1 (ATI TV Wonder Pro/Conexant)", Philips, NTSC,
205           16*160.00,16*442.00,0x01,0x02,0x04,0x8e,732},
206         { "Microtune 4049 FM5",Microtune,PAL,
207           16*141.00,16*464.00,0xa0,0x90,0x30,0x8e,623},
208         { "Panasonic VP27s/ENGE4324D", Panasonic, NTSC,
209           16*160.00,16*454.00,0x01,0x02,0x08,0xce,940},
210         { "LG NTSC (TAPE series)", LGINNOTEK, NTSC,
211           16*160.00,16*442.00,0x01,0x02,0x04,0x8e,732 },
212
213         { "Tenna TNF 8831 BGFF)", Philips, PAL,
214           16*161.25,16*463.25,0xa0,0x90,0x30,0x8e,623},
215         { "Microtune 4042 FI5 ATSC/NTSC dual in", Microtune, NTSC,
216           16*162.00,16*457.00,0xa2,0x94,0x31,0x8e,732},
217         { "TCL 2002N", TCL, NTSC,
218           16*172.00,16*448.00,0x01,0x02,0x08,0x8e,732},
219         { "Philips PAL/SECAM_D (FM 1256 I-H3)", Philips, PAL,
220           16*160.00,16*442.00,0x01,0x02,0x04,0x8e,623 },
221
222         { "Thomson DDT 7610 (ATSC/NTSC)", THOMSON, ATSC,
223           16*157.25,16*454.00,0x39,0x3a,0x3c,0x8e,732},
224         { "Philips FQ1286", Philips, NTSC,
225           16*160.00,16*454.00,0x41,0x42,0x04,0x8e,940}, // UHF band untested
226         { "tda8290+75", Philips,PAL|NTSC,
227           /* see tda8290.c for details */ },
228         { "LG PAL (TAPE series)", LGINNOTEK, PAL,
229           16*170.00, 16*450.00, 0x01,0x02,0x08,0xce,623},
230
231         { "Philips PAL/SECAM multi (FQ1216AME MK4)", Philips, PAL,
232           16*160.00,16*442.00,0x01,0x02,0x04,0xce,623 },
233         { "Philips FQ1236A MK4", Philips, NTSC,
234           16*160.00,16*442.00,0x01,0x02,0x04,0x8e,732 },
235         { "Ymec TVision TVF-8531MF/8831MF/8731MF", Philips, NTSC,
236           16*160.00,16*454.00,0xa0,0x90,0x30,0x8e,732},
237         { "Ymec TVision TVF-5533MF", Philips, NTSC,
238           16*160.00,16*454.00,0x01,0x02,0x04,0x8e,732},
239
240         { "Thomson DDT 7611 (ATSC/NTSC)", THOMSON, ATSC,
241           16*157.25,16*454.00,0x39,0x3a,0x3c,0x8e,732},
242         { "Tena TNF9533-D/IF/TNF9533-B/DF", Philips, PAL,
243           16*160.25,16*464.25,0x01,0x02,0x04,0x8e,623},
244         { "Philips TEA5767HN FM Radio", Philips, RADIO,
245           /* see tea5767.c for details */},
246         { "Philips FMD1216ME MK3 Hybrid Tuner", Philips, PAL,
247           16*160.00,16*442.00,0x51,0x52,0x54,0x86,623 },
248
249         { "LG TDVS-H062F/TUA6034", LGINNOTEK, NTSC,
250           16*160.00,16*455.00,0x01,0x02,0x04,0x8e,732},
251
252         { "Ymec TVF66T5-B/DFF", Philips, PAL,
253           16*160.25,16*464.25,0x01,0x02,0x08,0x8e,623},
254 };
255
256 unsigned const int tuner_count = ARRAY_SIZE(tuners);
257
258 /* ---------------------------------------------------------------------- */
259
260 static int tuner_getstatus(struct i2c_client *c)
261 {
262         unsigned char byte;
263
264         if (1 != i2c_master_recv(c,&byte,1))
265                 return 0;
266
267         return byte;
268 }
269
270 static int tuner_signal(struct i2c_client *c)
271 {
272         return (tuner_getstatus(c) & TUNER_SIGNAL) << 13;
273 }
274
275 static int tuner_stereo(struct i2c_client *c)
276 {
277         int stereo, status;
278         struct tuner *t = i2c_get_clientdata(c);
279
280         status = tuner_getstatus (c);
281
282         switch (t->type) {
283                 case TUNER_PHILIPS_FM1216ME_MK3:
284                 case TUNER_PHILIPS_FM1236_MK3:
285                 case TUNER_PHILIPS_FM1256_IH3:
286                         stereo = ((status & TUNER_SIGNAL) == TUNER_STEREO_MK3);
287                         break;
288                 default:
289                         stereo = status & TUNER_STEREO;
290         }
291
292         return stereo;
293 }
294
295
296 /* ---------------------------------------------------------------------- */
297
298 static void default_set_tv_freq(struct i2c_client *c, unsigned int freq)
299 {
300         struct tuner *t = i2c_get_clientdata(c);
301         u8 config;
302         u16 div;
303         struct tunertype *tun;
304         unsigned char buffer[4];
305         int rc;
306
307         tun = &tuners[t->type];
308         if (freq < tun->thresh1) {
309                 config = tun->VHF_L;
310                 tuner_dbg("tv: VHF lowrange\n");
311         } else if (freq < tun->thresh2) {
312                 config = tun->VHF_H;
313                 tuner_dbg("tv: VHF high range\n");
314         } else {
315                 config = tun->UHF;
316                 tuner_dbg("tv: UHF range\n");
317         }
318
319
320         /* tv norm specific stuff for multi-norm tuners */
321         switch (t->type) {
322         case TUNER_PHILIPS_SECAM: // FI1216MF
323                 /* 0x01 -> ??? no change ??? */
324                 /* 0x02 -> PAL BDGHI / SECAM L */
325                 /* 0x04 -> ??? PAL others / SECAM others ??? */
326                 config &= ~0x02;
327                 if (t->std & V4L2_STD_SECAM)
328                         config |= 0x02;
329                 break;
330
331         case TUNER_TEMIC_4046FM5:
332                 config &= ~0x0f;
333
334                 if (t->std & V4L2_STD_PAL_BG) {
335                         config |= TEMIC_SET_PAL_BG;
336
337                 } else if (t->std & V4L2_STD_PAL_I) {
338                         config |= TEMIC_SET_PAL_I;
339
340                 } else if (t->std & V4L2_STD_PAL_DK) {
341                         config |= TEMIC_SET_PAL_DK;
342
343                 } else if (t->std & V4L2_STD_SECAM_L) {
344                         config |= TEMIC_SET_PAL_L;
345
346                 }
347                 break;
348
349         case TUNER_PHILIPS_FQ1216ME:
350                 config &= ~0x0f;
351
352                 if (t->std & (V4L2_STD_PAL_BG|V4L2_STD_PAL_DK)) {
353                         config |= PHILIPS_SET_PAL_BGDK;
354
355                 } else if (t->std & V4L2_STD_PAL_I) {
356                         config |= PHILIPS_SET_PAL_I;
357
358                 } else if (t->std & V4L2_STD_SECAM_L) {
359                         config |= PHILIPS_SET_PAL_L;
360
361                 }
362                 break;
363
364         case TUNER_PHILIPS_ATSC:
365                 /* 0x00 -> ATSC antenna input 1 */
366                 /* 0x01 -> ATSC antenna input 2 */
367                 /* 0x02 -> NTSC antenna input 1 */
368                 /* 0x03 -> NTSC antenna input 2 */
369                 config &= ~0x03;
370                 if (!(t->std & V4L2_STD_ATSC))
371                         config |= 2;
372                 /* FIXME: input */
373                 break;
374
375         case TUNER_MICROTUNE_4042FI5:
376                 /* Set the charge pump for fast tuning */
377                 tun->config |= TUNER_CHARGE_PUMP;
378                 break;
379         }
380
381         /*
382          * Philips FI1216MK2 remark from specification :
383          * for channel selection involving band switching, and to ensure
384          * smooth tuning to the desired channel without causing
385          * unnecessary charge pump action, it is recommended to consider
386          * the difference between wanted channel frequency and the
387          * current channel frequency.  Unnecessary charge pump action
388          * will result in very low tuning voltage which may drive the
389          * oscillator to extreme conditions.
390          *
391          * Progfou: specification says to send config data before
392          * frequency in case (wanted frequency < current frequency).
393          */
394
395         div=freq + tun->IFPCoff;
396         if (t->type == TUNER_PHILIPS_SECAM && freq < t->freq) {
397                 buffer[0] = tun->config;
398                 buffer[1] = config;
399                 buffer[2] = (div>>8) & 0x7f;
400                 buffer[3] = div      & 0xff;
401         } else {
402                 buffer[0] = (div>>8) & 0x7f;
403                 buffer[1] = div      & 0xff;
404                 buffer[2] = tun->config;
405                 buffer[3] = config;
406         }
407         tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
408                   buffer[0],buffer[1],buffer[2],buffer[3]);
409
410         if (4 != (rc = i2c_master_send(c,buffer,4)))
411                 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
412
413         if (t->type == TUNER_MICROTUNE_4042FI5) {
414                 // FIXME - this may also work for other tuners
415                 unsigned long timeout = jiffies + msecs_to_jiffies(1);
416                 u8 status_byte = 0;
417
418                 /* Wait until the PLL locks */
419                 for (;;) {
420                         if (time_after(jiffies,timeout))
421                                 return;
422                         if (1 != (rc = i2c_master_recv(c,&status_byte,1))) {
423                                 tuner_warn("i2c i/o read error: rc == %d (should be 1)\n",rc);
424                                 break;
425                         }
426                         if (status_byte & TUNER_PLL_LOCKED)
427                                 break;
428                         udelay(10);
429                 }
430
431                 /* Set the charge pump for optimized phase noise figure */
432                 tun->config &= ~TUNER_CHARGE_PUMP;
433                 buffer[0] = (div>>8) & 0x7f;
434                 buffer[1] = div      & 0xff;
435                 buffer[2] = tun->config;
436                 buffer[3] = config;
437                 tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
438                        buffer[0],buffer[1],buffer[2],buffer[3]);
439
440                 if (4 != (rc = i2c_master_send(c,buffer,4)))
441                         tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
442         }
443 }
444
445 static void default_set_radio_freq(struct i2c_client *c, unsigned int freq)
446 {
447         struct tunertype *tun;
448         struct tuner *t = i2c_get_clientdata(c);
449         unsigned char buffer[4];
450         unsigned div;
451         int rc;
452
453         tun = &tuners[t->type];
454         div = (20 * freq / 16000) + (int)(20*10.7); /* IF 10.7 MHz */
455         buffer[2] = (tun->config & ~TUNER_RATIO_MASK) | TUNER_RATIO_SELECT_50; /* 50 kHz step */
456
457         switch (t->type) {
458         case TUNER_TENA_9533_DI:
459         case TUNER_YMEC_TVF_5533MF:
460                 tuner_dbg ("This tuner doesn't have FM. Most cards has a TEA5767 for FM\n");
461                 return;
462         case TUNER_PHILIPS_FM1216ME_MK3:
463         case TUNER_PHILIPS_FM1236_MK3:
464         case TUNER_PHILIPS_FMD1216ME_MK3:
465                 buffer[3] = 0x19;
466                 break;
467         case TUNER_PHILIPS_FM1256_IH3:
468                 div = (20 * freq) / 16000 + (int)(33.3 * 20);  /* IF 33.3 MHz */
469                 buffer[3] = 0x19;
470                 break;
471         case TUNER_LG_PAL_FM:
472                 buffer[3] = 0xa5;
473                 break;
474         default:
475                 buffer[3] = 0xa4;
476                 break;
477         }
478         buffer[0] = (div>>8) & 0x7f;
479         buffer[1] = div      & 0xff;
480
481         tuner_dbg("radio 0x%02x 0x%02x 0x%02x 0x%02x\n",
482                buffer[0],buffer[1],buffer[2],buffer[3]);
483
484         if (4 != (rc = i2c_master_send(c,buffer,4)))
485                 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
486 }
487
488 int default_tuner_init(struct i2c_client *c)
489 {
490         struct tuner *t = i2c_get_clientdata(c);
491
492         tuner_info("type set to %d (%s)\n",
493                    t->type, tuners[t->type].name);
494         strlcpy(c->name, tuners[t->type].name, sizeof(c->name));
495
496         t->tv_freq    = default_set_tv_freq;
497         t->radio_freq = default_set_radio_freq;
498         t->has_signal = tuner_signal;
499         t->is_stereo  = tuner_stereo;
500
501         return 0;
502 }
503
504 /*
505  * Overrides for Emacs so that we follow Linus's tabbing style.
506  * ---------------------------------------------------------------------------
507  * Local variables:
508  * c-basic-offset: 8
509  * End:
510  */