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V4L/DVB (3435): rename cb variable names in tuner structures for global consistency
[linux-2.6/btrfs-unstable.git] / drivers / media / video / tuner-simple.c
blob2c6410cc0fe93090a75cd4c36b730ce5748644fb
1 /*
2 *
3 * i2c tv tuner chip device driver
4 * controls all those simple 4-control-bytes style tuners.
5 */
6 #include <linux/delay.h>
7 #include <linux/i2c.h>
8 #include <linux/videodev.h>
9 #include <media/tuner.h>
10
11 static int offset = 0;
12 module_param(offset, int, 0666);
13 MODULE_PARM_DESC(offset,"Allows to specify an offset for tuner");
14
15 /* ---------------------------------------------------------------------- */
16
17 /* tv standard selection for Temic 4046 FM5
18 this value takes the low bits of control byte 2
19 from datasheet Rev.01, Feb.00
20 standard BG I L L2 D
21 picture IF 38.9 38.9 38.9 33.95 38.9
22 sound 1 33.4 32.9 32.4 40.45 32.4
23 sound 2 33.16
24 NICAM 33.05 32.348 33.05 33.05
25 */
26 #define TEMIC_SET_PAL_I 0x05
27 #define TEMIC_SET_PAL_DK 0x09
28 #define TEMIC_SET_PAL_L 0x0a // SECAM ?
29 #define TEMIC_SET_PAL_L2 0x0b // change IF !
30 #define TEMIC_SET_PAL_BG 0x0c
31
32 /* tv tuner system standard selection for Philips FQ1216ME
33 this value takes the low bits of control byte 2
34 from datasheet "1999 Nov 16" (supersedes "1999 Mar 23")
35 standard BG DK I L L`
36 picture carrier 38.90 38.90 38.90 38.90 33.95
37 colour 34.47 34.47 34.47 34.47 38.38
38 sound 1 33.40 32.40 32.90 32.40 40.45
39 sound 2 33.16 - - - -
40 NICAM 33.05 33.05 32.35 33.05 39.80
41 */
42 #define PHILIPS_SET_PAL_I 0x01 /* Bit 2 always zero !*/
43 #define PHILIPS_SET_PAL_BGDK 0x09
44 #define PHILIPS_SET_PAL_L2 0x0a
45 #define PHILIPS_SET_PAL_L 0x0b
46
47 /* system switching for Philips FI1216MF MK2
48 from datasheet "1996 Jul 09",
49 standard BG L L'
50 picture carrier 38.90 38.90 33.95
51 colour 34.47 34.37 38.38
52 sound 1 33.40 32.40 40.45
53 sound 2 33.16 - -
54 NICAM 33.05 33.05 39.80
55 */
56 #define PHILIPS_MF_SET_BG 0x01 /* Bit 2 must be zero, Bit 3 is system output */
57 #define PHILIPS_MF_SET_PAL_L 0x03 // France
58 #define PHILIPS_MF_SET_PAL_L2 0x02 // L'
59
60 /* Control byte */
61
62 #define TUNER_RATIO_MASK 0x06 /* Bit cb1:cb2 */
63 #define TUNER_RATIO_SELECT_50 0x00
64 #define TUNER_RATIO_SELECT_32 0x02
65 #define TUNER_RATIO_SELECT_166 0x04
66 #define TUNER_RATIO_SELECT_62 0x06
67
68 #define TUNER_CHARGE_PUMP 0x40 /* Bit cb6 */
69
70 /* Status byte */
71
72 #define TUNER_POR 0x80
73 #define TUNER_FL 0x40
74 #define TUNER_MODE 0x38
75 #define TUNER_AFC 0x07
76 #define TUNER_SIGNAL 0x07
77 #define TUNER_STEREO 0x10
78
79 #define TUNER_PLL_LOCKED 0x40
80 #define TUNER_STEREO_MK3 0x04
81
82 #define TUNER_PARAM_ANALOG 0 /* to be removed */
83 /* FIXME:
84 * Right now, all tuners are using the first tuner_params[] array element
85 * for analog mode. In the future, we will be merging similar tuner
86 * definitions together, such that each tuner definition will have a
87 * tuner_params struct for each available video standard. At that point,
88 * TUNER_PARAM_ANALOG will be removed, and the tuner_params[] array
89 * element will be chosen based on the video standard in use.
90 *
91 */
92
93 /* ---------------------------------------------------------------------- */
94
95 static int tuner_getstatus(struct i2c_client *c)
96 {
97 unsigned char byte;
98
99 if (1 != i2c_master_recv(c,&byte,1))
100 return 0;
101
102 return byte;
103 }
104
105 static int tuner_signal(struct i2c_client *c)
106 {
107 return (tuner_getstatus(c) & TUNER_SIGNAL) << 13;
108 }
109
110 static int tuner_stereo(struct i2c_client *c)
111 {
112 int stereo, status;
113 struct tuner *t = i2c_get_clientdata(c);
114
115 status = tuner_getstatus (c);
116
117 switch (t->type) {
118 case TUNER_PHILIPS_FM1216ME_MK3:
119 case TUNER_PHILIPS_FM1236_MK3:
120 case TUNER_PHILIPS_FM1256_IH3:
121 stereo = ((status & TUNER_SIGNAL) == TUNER_STEREO_MK3);
122 break;
123 default:
124 stereo = status & TUNER_STEREO;
125 }
126
127 return stereo;
128 }
129
130
131 /* ---------------------------------------------------------------------- */
132
133 static void default_set_tv_freq(struct i2c_client *c, unsigned int freq)
134 {
135 struct tuner *t = i2c_get_clientdata(c);
136 u8 cb, tuneraddr;
137 u16 div;
138 struct tunertype *tun;
139 u8 buffer[4];
140 int rc, IFPCoff, i, j;
141
142 tun = &tuners[t->type];
143 j = TUNER_PARAM_ANALOG;
144
145 for (i = 0; i < tun->params[j].count; i++) {
146 if (freq > tun->params[j].ranges[i].limit)
147 continue;
148 break;
149 }
150 if (i == tun->params[j].count) {
151 tuner_dbg("TV frequency out of range (%d > %d)",
152 freq, tun->params[j].ranges[i - 1].limit);
153 freq = tun->params[j].ranges[--i].limit;
154 }
155 cb = tun->params[j].ranges[i].cb;
156 /* i == 0 -> VHF_LO */
157 /* i == 1 -> VHF_HI */
158 /* i == 2 -> UHF */
159 tuner_dbg("tv: range %d\n",i);
160
161 /* tv norm specific stuff for multi-norm tuners */
162 switch (t->type) {
163 case TUNER_PHILIPS_SECAM: // FI1216MF
164 /* 0x01 -> ??? no change ??? */
165 /* 0x02 -> PAL BDGHI / SECAM L */
166 /* 0x04 -> ??? PAL others / SECAM others ??? */
167 cb &= ~0x02;
168 if (t->std & V4L2_STD_SECAM)
169 cb |= 0x02;
170 break;
171
172 case TUNER_TEMIC_4046FM5:
173 cb &= ~0x0f;
174
175 if (t->std & V4L2_STD_PAL_BG) {
176 cb |= TEMIC_SET_PAL_BG;
177
178 } else if (t->std & V4L2_STD_PAL_I) {
179 cb |= TEMIC_SET_PAL_I;
180
181 } else if (t->std & V4L2_STD_PAL_DK) {
182 cb |= TEMIC_SET_PAL_DK;
183
184 } else if (t->std & V4L2_STD_SECAM_L) {
185 cb |= TEMIC_SET_PAL_L;
186
187 }
188 break;
189
190 case TUNER_PHILIPS_FQ1216ME:
191 cb &= ~0x0f;
192
193 if (t->std & (V4L2_STD_PAL_BG|V4L2_STD_PAL_DK)) {
194 cb |= PHILIPS_SET_PAL_BGDK;
195
196 } else if (t->std & V4L2_STD_PAL_I) {
197 cb |= PHILIPS_SET_PAL_I;
198
199 } else if (t->std & V4L2_STD_SECAM_L) {
200 cb |= PHILIPS_SET_PAL_L;
201
202 }
203 break;
204
205 case TUNER_PHILIPS_ATSC:
206 /* 0x00 -> ATSC antenna input 1 */
207 /* 0x01 -> ATSC antenna input 2 */
208 /* 0x02 -> NTSC antenna input 1 */
209 /* 0x03 -> NTSC antenna input 2 */
210 cb &= ~0x03;
211 if (!(t->std & V4L2_STD_ATSC))
212 cb |= 2;
213 /* FIXME: input */
214 break;
215
216 case TUNER_MICROTUNE_4042FI5:
217 /* Set the charge pump for fast tuning */
218 tun->params[j].config |= TUNER_CHARGE_PUMP;
219 break;
220
221 case TUNER_PHILIPS_TUV1236D:
222 /* 0x40 -> ATSC antenna input 1 */
223 /* 0x48 -> ATSC antenna input 2 */
224 /* 0x00 -> NTSC antenna input 1 */
225 /* 0x08 -> NTSC antenna input 2 */
226 buffer[0] = 0x14;
227 buffer[1] = 0x00;
228 buffer[2] = 0x17;
229 buffer[3] = 0x00;
230 cb &= ~0x40;
231 if (t->std & V4L2_STD_ATSC) {
232 cb |= 0x40;
233 buffer[1] = 0x04;
234 }
235 /* set to the correct mode (analog or digital) */
236 tuneraddr = c->addr;
237 c->addr = 0x0a;
238 if (2 != (rc = i2c_master_send(c,&buffer[0],2)))
239 tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
240 if (2 != (rc = i2c_master_send(c,&buffer[2],2)))
241 tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
242 c->addr = tuneraddr;
243 /* FIXME: input */
244 break;
245 }
246
247 /* IFPCoff = Video Intermediate Frequency - Vif:
248 940 =16*58.75 NTSC/J (Japan)
249 732 =16*45.75 M/N STD
250 704 =16*44 ATSC (at DVB code)
251 632 =16*39.50 I U.K.
252 622.4=16*38.90 B/G D/K I, L STD
253 592 =16*37.00 D China
254 590 =16.36.875 B Australia
255 543.2=16*33.95 L' STD
256 171.2=16*10.70 FM Radio (at set_radio_freq)
257 */
258
259 if (t->std == V4L2_STD_NTSC_M_JP) {
260 IFPCoff = 940;
261 } else if ((t->std & V4L2_STD_MN) &&
262 !(t->std & ~V4L2_STD_MN)) {
263 IFPCoff = 732;
264 } else if (t->std == V4L2_STD_SECAM_LC) {
265 IFPCoff = 543;
266 } else {
267 IFPCoff = 623;
268 }
269
270 div=freq + IFPCoff + offset;
271
272 tuner_dbg("Freq= %d.%02d MHz, V_IF=%d.%02d MHz, Offset=%d.%02d MHz, div=%0d\n",
273 freq / 16, freq % 16 * 100 / 16,
274 IFPCoff / 16, IFPCoff % 16 * 100 / 16,
275 offset / 16, offset % 16 * 100 / 16,
276 div);
277
278 if (tuners[t->type].params->cb_first_if_lower_freq && div < t->last_div) {
279 buffer[0] = tun->params[j].config;
280 buffer[1] = cb;
281 buffer[2] = (div>>8) & 0x7f;
282 buffer[3] = div & 0xff;
283 } else {
284 buffer[0] = (div>>8) & 0x7f;
285 buffer[1] = div & 0xff;
286 buffer[2] = tun->params[j].config;
287 buffer[3] = cb;
288 }
289 t->last_div = div;
290 tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
291 buffer[0],buffer[1],buffer[2],buffer[3]);
292
293 if (4 != (rc = i2c_master_send(c,buffer,4)))
294 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
295
296 if (t->type == TUNER_MICROTUNE_4042FI5) {
297 // FIXME - this may also work for other tuners
298 unsigned long timeout = jiffies + msecs_to_jiffies(1);
299 u8 status_byte = 0;
300
301 /* Wait until the PLL locks */
302 for (;;) {
303 if (time_after(jiffies,timeout))
304 return;
305 if (1 != (rc = i2c_master_recv(c,&status_byte,1))) {
306 tuner_warn("i2c i/o read error: rc == %d (should be 1)\n",rc);
307 break;
308 }
309 if (status_byte & TUNER_PLL_LOCKED)
310 break;
311 udelay(10);
312 }
313
314 /* Set the charge pump for optimized phase noise figure */
315 tun->params[j].config &= ~TUNER_CHARGE_PUMP;
316 buffer[0] = (div>>8) & 0x7f;
317 buffer[1] = div & 0xff;
318 buffer[2] = tun->params[j].config;
319 buffer[3] = cb;
320 tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
321 buffer[0],buffer[1],buffer[2],buffer[3]);
322
323 if (4 != (rc = i2c_master_send(c,buffer,4)))
324 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
325 }
326 }
327
328 static void default_set_radio_freq(struct i2c_client *c, unsigned int freq)
329 {
330 struct tunertype *tun;
331 struct tuner *t = i2c_get_clientdata(c);
332 u8 buffer[4];
333 u16 div;
334 int rc, j;
335
336 tun = &tuners[t->type];
337 j = TUNER_PARAM_ANALOG;
338
339 div = (20 * freq / 16000) + (int)(20*10.7); /* IF 10.7 MHz */
340 buffer[2] = (tun->params[j].config & ~TUNER_RATIO_MASK) | TUNER_RATIO_SELECT_50; /* 50 kHz step */
341
342 switch (t->type) {
343 case TUNER_TENA_9533_DI:
344 case TUNER_YMEC_TVF_5533MF:
345 tuner_dbg ("This tuner doesn't have FM. Most cards has a TEA5767 for FM\n");
346 return;
347 case TUNER_PHILIPS_FM1216ME_MK3:
348 case TUNER_PHILIPS_FM1236_MK3:
349 case TUNER_PHILIPS_FMD1216ME_MK3:
350 buffer[3] = 0x19;
351 break;
352 case TUNER_PHILIPS_FM1256_IH3:
353 div = (20 * freq) / 16000 + (int)(33.3 * 20); /* IF 33.3 MHz */
354 buffer[3] = 0x19;
355 break;
356 case TUNER_LG_PAL_FM:
357 buffer[3] = 0xa5;
358 break;
359 case TUNER_MICROTUNE_4049FM5:
360 div = (20 * freq) / 16000 + (int)(33.3 * 20); /* IF 33.3 MHz */
361 buffer[3] = 0xa4;
362 break;
363 default:
364 buffer[3] = 0xa4;
365 break;
366 }
367 buffer[0] = (div>>8) & 0x7f;
368 buffer[1] = div & 0xff;
369 if (tuners[t->type].params->cb_first_if_lower_freq && div < t->last_div) {
370 buffer[0] = buffer[2];
371 buffer[1] = buffer[3];
372 buffer[2] = (div>>8) & 0x7f;
373 buffer[3] = div & 0xff;
374 } else {
375 buffer[0] = (div>>8) & 0x7f;
376 buffer[1] = div & 0xff;
377 }
378
379 tuner_dbg("radio 0x%02x 0x%02x 0x%02x 0x%02x\n",
380 buffer[0],buffer[1],buffer[2],buffer[3]);
381 t->last_div = div;
382
383 if (4 != (rc = i2c_master_send(c,buffer,4)))
384 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
385 }
386
387 int default_tuner_init(struct i2c_client *c)
388 {
389 struct tuner *t = i2c_get_clientdata(c);
390
391 tuner_info("type set to %d (%s)\n",
392 t->type, tuners[t->type].name);
393 strlcpy(c->name, tuners[t->type].name, sizeof(c->name));
394
395 t->set_tv_freq = default_set_tv_freq;
396 t->set_radio_freq = default_set_radio_freq;
397 t->has_signal = tuner_signal;
398 t->is_stereo = tuner_stereo;
399 t->standby = NULL;
400
401 return 0;
402 }
403
404 /*
405 * Overrides for Emacs so that we follow Linus's tabbing style.
406 * ---------------------------------------------------------------------------
407 * Local variables:
408 * c-basic-offset: 8
409 * End:
410 */
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