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[XFRM]: skb_cow_data() does not set proper owner for new skbs.
[linux-2.6/verdex.git] / drivers / media / video / tuner-simple.c
blob48c6ceff1dc265c39799ec15120c42e59c024735
1 /*
2 * $Id: tuner-simple.c,v 1.10 2005/03/08 08:38:00 kraxel 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
58 /* ---------------------------------------------------------------------- */
59
60 struct tunertype
61 {
62 char *name;
63 unsigned char Vendor;
64 unsigned char Type;
65
66 unsigned short thresh1; /* band switch VHF_LO <=> VHF_HI */
67 unsigned short thresh2; /* band switch VHF_HI <=> UHF */
68 unsigned char VHF_L;
69 unsigned char VHF_H;
70 unsigned char UHF;
71 unsigned char config;
72 unsigned short IFPCoff; /* 622.4=16*38.90 MHz PAL,
73 732 =16*45.75 NTSCi,
74 940 =16*58.75 NTSC-Japan
75 704 =16*44 ATSC */
76 };
77
78 /*
79 * The floats in the tuner struct are computed at compile time
80 * by gcc and cast back to integers. Thus we don't violate the
81 * "no float in kernel" rule.
82 */
83 static struct tunertype tuners[] = {
84 { "Temic PAL (4002 FH5)", TEMIC, PAL,
85 16*140.25,16*463.25,0x02,0x04,0x01,0x8e,623},
86 { "Philips PAL_I (FI1246 and compatibles)", Philips, PAL_I,
87 16*140.25,16*463.25,0xa0,0x90,0x30,0x8e,623},
88 { "Philips NTSC (FI1236,FM1236 and compatibles)", Philips, NTSC,
89 16*157.25,16*451.25,0xA0,0x90,0x30,0x8e,732},
90 { "Philips (SECAM+PAL_BG) (FI1216MF, FM1216MF, FR1216MF)", Philips, SECAM,
91 16*168.25,16*447.25,0xA7,0x97,0x37,0x8e,623},
92
93 { "NoTuner", NoTuner, NOTUNER,
94 0,0,0x00,0x00,0x00,0x00,0x00},
95 { "Philips PAL_BG (FI1216 and compatibles)", Philips, PAL,
96 16*168.25,16*447.25,0xA0,0x90,0x30,0x8e,623},
97 { "Temic NTSC (4032 FY5)", TEMIC, NTSC,
98 16*157.25,16*463.25,0x02,0x04,0x01,0x8e,732},
99 { "Temic PAL_I (4062 FY5)", TEMIC, PAL_I,
100 16*170.00,16*450.00,0x02,0x04,0x01,0x8e,623},
101
102 { "Temic NTSC (4036 FY5)", TEMIC, NTSC,
103 16*157.25,16*463.25,0xa0,0x90,0x30,0x8e,732},
104 { "Alps HSBH1", TEMIC, NTSC,
105 16*137.25,16*385.25,0x01,0x02,0x08,0x8e,732},
106 { "Alps TSBE1",TEMIC,PAL,
107 16*137.25,16*385.25,0x01,0x02,0x08,0x8e,732},
108 { "Alps TSBB5", Alps, PAL_I, /* tested (UK UHF) with Modulartech MM205 */
109 16*133.25,16*351.25,0x01,0x02,0x08,0x8e,632},
110
111 { "Alps TSBE5", Alps, PAL, /* untested - data sheet guess. Only IF differs. */
112 16*133.25,16*351.25,0x01,0x02,0x08,0x8e,622},
113 { "Alps TSBC5", Alps, PAL, /* untested - data sheet guess. Only IF differs. */
114 16*133.25,16*351.25,0x01,0x02,0x08,0x8e,608},
115 { "Temic PAL_BG (4006FH5)", TEMIC, PAL,
116 16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
117 { "Alps TSCH6",Alps,NTSC,
118 16*137.25,16*385.25,0x14,0x12,0x11,0x8e,732},
119
120 { "Temic PAL_DK (4016 FY5)",TEMIC,PAL,
121 16*168.25,16*456.25,0xa0,0x90,0x30,0x8e,623},
122 { "Philips NTSC_M (MK2)",Philips,NTSC,
123 16*160.00,16*454.00,0xa0,0x90,0x30,0x8e,732},
124 { "Temic PAL_I (4066 FY5)", TEMIC, PAL_I,
125 16*169.00, 16*454.00, 0xa0,0x90,0x30,0x8e,623},
126 { "Temic PAL* auto (4006 FN5)", TEMIC, PAL,
127 16*169.00, 16*454.00, 0xa0,0x90,0x30,0x8e,623},
128
129 { "Temic PAL_BG (4009 FR5) or PAL_I (4069 FR5)", TEMIC, PAL,
130 16*141.00, 16*464.00, 0xa0,0x90,0x30,0x8e,623},
131 { "Temic NTSC (4039 FR5)", TEMIC, NTSC,
132 16*158.00, 16*453.00, 0xa0,0x90,0x30,0x8e,732},
133 { "Temic PAL/SECAM multi (4046 FM5)", TEMIC, PAL,
134 16*169.00, 16*454.00, 0xa0,0x90,0x30,0x8e,623},
135 { "Philips PAL_DK (FI1256 and compatibles)", Philips, PAL,
136 16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
137
138 { "Philips PAL/SECAM multi (FQ1216ME)", Philips, PAL,
139 16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
140 { "LG PAL_I+FM (TAPC-I001D)", LGINNOTEK, PAL_I,
141 16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
142 { "LG PAL_I (TAPC-I701D)", LGINNOTEK, PAL_I,
143 16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
144 { "LG NTSC+FM (TPI8NSR01F)", LGINNOTEK, NTSC,
145 16*210.00,16*497.00,0xa0,0x90,0x30,0x8e,732},
146
147 { "LG PAL_BG+FM (TPI8PSB01D)", LGINNOTEK, PAL,
148 16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
149 { "LG PAL_BG (TPI8PSB11D)", LGINNOTEK, PAL,
150 16*170.00,16*450.00,0xa0,0x90,0x30,0x8e,623},
151 { "Temic PAL* auto + FM (4009 FN5)", TEMIC, PAL,
152 16*141.00, 16*464.00, 0xa0,0x90,0x30,0x8e,623},
153 { "SHARP NTSC_JP (2U5JF5540)", SHARP, NTSC, /* 940=16*58.75 NTSC@Japan */
154 16*137.25,16*317.25,0x01,0x02,0x08,0x8e,940 },
155
156 { "Samsung PAL TCPM9091PD27", Samsung, PAL, /* from sourceforge v3tv */
157 16*169,16*464,0xA0,0x90,0x30,0x8e,623},
158 { "MT20xx universal", Microtune,PAL|NTSC,
159 /* see mt20xx.c for details */ },
160 { "Temic PAL_BG (4106 FH5)", TEMIC, PAL,
161 16*141.00, 16*464.00, 0xa0,0x90,0x30,0x8e,623},
162 { "Temic PAL_DK/SECAM_L (4012 FY5)", TEMIC, PAL,
163 16*140.25, 16*463.25, 0x02,0x04,0x01,0x8e,623},
164
165 { "Temic NTSC (4136 FY5)", TEMIC, NTSC,
166 16*158.00, 16*453.00, 0xa0,0x90,0x30,0x8e,732},
167 { "LG PAL (newer TAPC series)", LGINNOTEK, PAL,
168 16*170.00, 16*450.00, 0x01,0x02,0x08,0x8e,623},
169 { "Philips PAL/SECAM multi (FM1216ME MK3)", Philips, PAL,
170 16*160.00,16*442.00,0x01,0x02,0x04,0x8e,623 },
171 { "LG NTSC (newer TAPC series)", LGINNOTEK, NTSC,
172 16*170.00, 16*450.00, 0x01,0x02,0x08,0x8e,732},
173
174 { "HITACHI V7-J180AT", HITACHI, NTSC,
175 16*170.00, 16*450.00, 0x01,0x02,0x08,0x8e,940 },
176 { "Philips PAL_MK (FI1216 MK)", Philips, PAL,
177 16*140.25,16*463.25,0x01,0xc2,0xcf,0x8e,623},
178 { "Philips 1236D ATSC/NTSC daul in",Philips,ATSC,
179 16*157.25,16*454.00,0xa0,0x90,0x30,0x8e,732},
180 { "Philips NTSC MK3 (FM1236MK3 or FM1236/F)", Philips, NTSC,
181 16*160.00,16*442.00,0x01,0x02,0x04,0x8e,732},
182
183 { "Philips 4 in 1 (ATI TV Wonder Pro/Conexant)", Philips, NTSC,
184 16*160.00,16*442.00,0x01,0x02,0x04,0x8e,732},
185 { "Microtune 4049 FM5",Microtune,PAL,
186 16*141.00,16*464.00,0xa0,0x90,0x30,0x8e,623},
187 { "Panasonic VP27s/ENGE4324D", Panasonic, NTSC,
188 16*160.00,16*454.00,0x01,0x02,0x08,0xce,940},
189 { "LG NTSC (TAPE series)", LGINNOTEK, NTSC,
190 16*160.00,16*442.00,0x01,0x02,0x04,0x8e,732 },
191
192 { "Tenna TNF 8831 BGFF)", Philips, PAL,
193 16*161.25,16*463.25,0xa0,0x90,0x30,0x8e,623},
194 { "Microtune 4042 FI5 ATSC/NTSC dual in", Microtune, NTSC,
195 16*162.00,16*457.00,0xa2,0x94,0x31,0x8e,732},
196 { "TCL 2002N", TCL, NTSC,
197 16*172.00,16*448.00,0x01,0x02,0x08,0x8e,732},
198 { "Philips PAL/SECAM_D (FM 1256 I-H3)", Philips, PAL,
199 16*160.00,16*442.00,0x01,0x02,0x04,0x8e,623 },
200
201 { "Thomson DDT 7610 (ATSC/NTSC)", THOMSON, ATSC,
202 16*157.25,16*454.00,0x39,0x3a,0x3c,0x8e,732},
203 { "Philips FQ1286", Philips, NTSC,
204 16*160.00,16*454.00,0x41,0x42,0x04,0x8e,940}, // UHF band untested
205 { "tda8290+75", Philips,PAL|NTSC,
206 /* see tda8290.c for details */ },
207 { "LG PAL (TAPE series)", LGINNOTEK, PAL,
208 16*170.00, 16*450.00, 0x01,0x02,0x08,0xce,623},
209
210 { "Philips PAL/SECAM multi (FQ1216AME MK4)", Philips, PAL,
211 16*160.00,16*442.00,0x01,0x02,0x04,0xce,623 },
212 { "Philips FQ1236A MK4", Philips, NTSC,
213 16*160.00,16*442.00,0x01,0x02,0x04,0x8e,732 },
214
215 };
216 unsigned const int tuner_count = ARRAY_SIZE(tuners);
217
218 /* ---------------------------------------------------------------------- */
219
220 static int tuner_getstatus(struct i2c_client *c)
221 {
222 unsigned char byte;
223
224 if (1 != i2c_master_recv(c,&byte,1))
225 return 0;
226 return byte;
227 }
228
229 #define TUNER_POR 0x80
230 #define TUNER_FL 0x40
231 #define TUNER_MODE 0x38
232 #define TUNER_AFC 0x07
233
234 #define TUNER_STEREO 0x10 /* radio mode */
235 #define TUNER_SIGNAL 0x07 /* radio mode */
236
237 static int tuner_signal(struct i2c_client *c)
238 {
239 return (tuner_getstatus(c) & TUNER_SIGNAL)<<13;
240 }
241
242 static int tuner_stereo(struct i2c_client *c)
243 {
244 return (tuner_getstatus (c) & TUNER_STEREO);
245 }
246
247 #if 0 /* unused */
248 static int tuner_islocked (struct i2c_client *c)
249 {
250 return (tuner_getstatus (c) & TUNER_FL);
251 }
252
253 static int tuner_afcstatus (struct i2c_client *c)
254 {
255 return (tuner_getstatus (c) & TUNER_AFC) - 2;
256 }
257
258 static int tuner_mode (struct i2c_client *c)
259 {
260 return (tuner_getstatus (c) & TUNER_MODE) >> 3;
261 }
262 #endif
263
264 /* ---------------------------------------------------------------------- */
265
266 static void default_set_tv_freq(struct i2c_client *c, unsigned int freq)
267 {
268 struct tuner *t = i2c_get_clientdata(c);
269 u8 config;
270 u16 div;
271 struct tunertype *tun;
272 unsigned char buffer[4];
273 int rc;
274
275 tun = &tuners[t->type];
276 if (freq < tun->thresh1) {
277 config = tun->VHF_L;
278 tuner_dbg("tv: VHF lowrange\n");
279 } else if (freq < tun->thresh2) {
280 config = tun->VHF_H;
281 tuner_dbg("tv: VHF high range\n");
282 } else {
283 config = tun->UHF;
284 tuner_dbg("tv: UHF range\n");
285 }
286
287
288 /* tv norm specific stuff for multi-norm tuners */
289 switch (t->type) {
290 case TUNER_PHILIPS_SECAM: // FI1216MF
291 /* 0x01 -> ??? no change ??? */
292 /* 0x02 -> PAL BDGHI / SECAM L */
293 /* 0x04 -> ??? PAL others / SECAM others ??? */
294 config &= ~0x02;
295 if (t->std & V4L2_STD_SECAM)
296 config |= 0x02;
297 break;
298
299 case TUNER_TEMIC_4046FM5:
300 config &= ~0x0f;
301
302 if (t->std & V4L2_STD_PAL_BG) {
303 config |= TEMIC_SET_PAL_BG;
304
305 } else if (t->std & V4L2_STD_PAL_I) {
306 config |= TEMIC_SET_PAL_I;
307
308 } else if (t->std & V4L2_STD_PAL_DK) {
309 config |= TEMIC_SET_PAL_DK;
310
311 } else if (t->std & V4L2_STD_SECAM_L) {
312 config |= TEMIC_SET_PAL_L;
313
314 }
315 break;
316
317 case TUNER_PHILIPS_FQ1216ME:
318 config &= ~0x0f;
319
320 if (t->std & (V4L2_STD_PAL_BG|V4L2_STD_PAL_DK)) {
321 config |= PHILIPS_SET_PAL_BGDK;
322
323 } else if (t->std & V4L2_STD_PAL_I) {
324 config |= PHILIPS_SET_PAL_I;
325
326 } else if (t->std & V4L2_STD_SECAM_L) {
327 config |= PHILIPS_SET_PAL_L;
328
329 }
330 break;
331
332 case TUNER_PHILIPS_ATSC:
333 /* 0x00 -> ATSC antenna input 1 */
334 /* 0x01 -> ATSC antenna input 2 */
335 /* 0x02 -> NTSC antenna input 1 */
336 /* 0x03 -> NTSC antenna input 2 */
337 config &= ~0x03;
338 if (!(t->std & V4L2_STD_ATSC))
339 config |= 2;
340 /* FIXME: input */
341 break;
342
343 case TUNER_MICROTUNE_4042FI5:
344 /* Set the charge pump for fast tuning */
345 tun->config |= 0x40;
346 break;
347 }
348
349 /*
350 * Philips FI1216MK2 remark from specification :
351 * for channel selection involving band switching, and to ensure
352 * smooth tuning to the desired channel without causing
353 * unnecessary charge pump action, it is recommended to consider
354 * the difference between wanted channel frequency and the
355 * current channel frequency. Unnecessary charge pump action
356 * will result in very low tuning voltage which may drive the
357 * oscillator to extreme conditions.
358 *
359 * Progfou: specification says to send config data before
360 * frequency in case (wanted frequency < current frequency).
361 */
362
363 div=freq + tun->IFPCoff;
364 if (t->type == TUNER_PHILIPS_SECAM && freq < t->freq) {
365 buffer[0] = tun->config;
366 buffer[1] = config;
367 buffer[2] = (div>>8) & 0x7f;
368 buffer[3] = div & 0xff;
369 } else {
370 buffer[0] = (div>>8) & 0x7f;
371 buffer[1] = div & 0xff;
372 buffer[2] = tun->config;
373 buffer[3] = config;
374 }
375 tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
376 buffer[0],buffer[1],buffer[2],buffer[3]);
377
378 if (4 != (rc = i2c_master_send(c,buffer,4)))
379 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
380
381 if (t->type == TUNER_MICROTUNE_4042FI5) {
382 // FIXME - this may also work for other tuners
383 unsigned long timeout = jiffies + msecs_to_jiffies(1);
384 u8 status_byte = 0;
385
386 /* Wait until the PLL locks */
387 for (;;) {
388 if (time_after(jiffies,timeout))
389 return;
390 if (1 != (rc = i2c_master_recv(c,&status_byte,1))) {
391 tuner_warn("i2c i/o read error: rc == %d (should be 1)\n",rc);
392 break;
393 }
394 /* bit 6 is PLL locked indicator */
395 if (status_byte & 0x40)
396 break;
397 udelay(10);
398 }
399
400 /* Set the charge pump for optimized phase noise figure */
401 tun->config &= ~0x40;
402 buffer[0] = (div>>8) & 0x7f;
403 buffer[1] = div & 0xff;
404 buffer[2] = tun->config;
405 buffer[3] = config;
406 tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
407 buffer[0],buffer[1],buffer[2],buffer[3]);
408
409 if (4 != (rc = i2c_master_send(c,buffer,4)))
410 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
411 }
412 }
413
414 static void default_set_radio_freq(struct i2c_client *c, unsigned int freq)
415 {
416 struct tunertype *tun;
417 struct tuner *t = i2c_get_clientdata(c);
418 unsigned char buffer[4];
419 unsigned div;
420 int rc;
421
422 tun=&tuners[t->type];
423 div = freq + (int)(16*10.7);
424 buffer[2] = tun->config;
425
426 switch (t->type) {
427 case TUNER_PHILIPS_FM1216ME_MK3:
428 case TUNER_PHILIPS_FM1236_MK3:
429 buffer[3] = 0x19;
430 break;
431 case TUNER_PHILIPS_FM1256_IH3:
432 div = (20 * freq)/16 + 333 * 2;
433 buffer[2] = 0x80;
434 buffer[3] = 0x19;
435 break;
436 case TUNER_LG_PAL_FM:
437 buffer[3] = 0xa5;
438 break;
439 default:
440 buffer[3] = 0xa4;
441 break;
442 }
443 buffer[0] = (div>>8) & 0x7f;
444 buffer[1] = div & 0xff;
445
446 tuner_dbg("radio 0x%02x 0x%02x 0x%02x 0x%02x\n",
447 buffer[0],buffer[1],buffer[2],buffer[3]);
448
449 if (4 != (rc = i2c_master_send(c,buffer,4)))
450 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
451 }
452
453 int default_tuner_init(struct i2c_client *c)
454 {
455 struct tuner *t = i2c_get_clientdata(c);
456
457 tuner_info("type set to %d (%s)\n",
458 t->type, tuners[t->type].name);
459 strlcpy(c->name, tuners[t->type].name, sizeof(c->name));
460
461 t->tv_freq = default_set_tv_freq;
462 t->radio_freq = default_set_radio_freq;
463 t->has_signal = tuner_signal;
464 t->is_stereo = tuner_stereo;
465 return 0;
466 }
467
468 /*
469 * Overrides for Emacs so that we follow Linus's tabbing style.
470 * ---------------------------------------------------------------------------
471 * Local variables:
472 * c-basic-offset: 8
473 * End:
474 */
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