3 * i2c tv tuner chip device driver
4 * controls all those simple 4-control-bytes style tuners.
6 #include <linux/delay.h>
8 #include <linux/videodev.h>
9 #include <media/tuner.h>
11 static int offset = 0;
12 module_param(offset, int, 0666);
13 MODULE_PARM_DESC(offset,"Allows to specify an offset for tuner");
15 /* ---------------------------------------------------------------------- */
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
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
24 NICAM 33.05 32.348 33.05 33.05
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
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")
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
40 NICAM 33.05 33.05 32.35 33.05 39.80
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
47 /* system switching for Philips FI1216MF MK2
48 from datasheet "1996 Jul 09",
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
54 NICAM 33.05 33.05 39.80
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'
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
68 #define TUNER_CHARGE_PUMP 0x40 /* Bit cb6 */
72 #define TUNER_POR 0x80
74 #define TUNER_MODE 0x38
75 #define TUNER_AFC 0x07
76 #define TUNER_SIGNAL 0x07
77 #define TUNER_STEREO 0x10
79 #define TUNER_PLL_LOCKED 0x40
80 #define TUNER_STEREO_MK3 0x04
82 #define TUNER_PARAM_ANALOG 0 /* to be removed */
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.
93 /* ---------------------------------------------------------------------- */
95 static int tuner_getstatus(struct i2c_client *c)
99 if (1 != i2c_master_recv(c,&byte,1))
105 static int tuner_signal(struct i2c_client *c)
107 return (tuner_getstatus(c) & TUNER_SIGNAL) << 13;
110 static int tuner_stereo(struct i2c_client *c)
113 struct tuner *t = i2c_get_clientdata(c);
115 status = tuner_getstatus (c);
118 case TUNER_PHILIPS_FM1216ME_MK3:
119 case TUNER_PHILIPS_FM1236_MK3:
120 case TUNER_PHILIPS_FM1256_IH3:
121 case TUNER_LG_NTSC_TAPE:
122 stereo = ((status & TUNER_SIGNAL) == TUNER_STEREO_MK3);
125 stereo = status & TUNER_STEREO;
132 /* ---------------------------------------------------------------------- */
134 static void default_set_tv_freq(struct i2c_client *c, unsigned int freq)
136 struct tuner *t = i2c_get_clientdata(c);
137 u8 config, tuneraddr;
139 struct tunertype *tun;
141 int rc, IFPCoff, i, j;
143 tun = &tuners[t->type];
144 j = TUNER_PARAM_ANALOG;
146 for (i = 0; i < tun->params[j].count; i++) {
147 if (freq > tun->params[j].ranges[i].limit)
151 if (i == tun->params[j].count) {
152 tuner_dbg("TV frequency out of range (%d > %d)",
153 freq, tun->params[j].ranges[i - 1].limit);
154 freq = tun->params[j].ranges[--i].limit;
156 config = tun->params[j].ranges[i].cb;
157 /* i == 0 -> VHF_LO */
158 /* i == 1 -> VHF_HI */
160 tuner_dbg("tv: range %d\n",i);
162 /* tv norm specific stuff for multi-norm tuners */
164 case TUNER_PHILIPS_SECAM: // FI1216MF
165 /* 0x01 -> ??? no change ??? */
166 /* 0x02 -> PAL BDGHI / SECAM L */
167 /* 0x04 -> ??? PAL others / SECAM others ??? */
169 if (t->std & V4L2_STD_SECAM)
173 case TUNER_TEMIC_4046FM5:
176 if (t->std & V4L2_STD_PAL_BG) {
177 config |= TEMIC_SET_PAL_BG;
179 } else if (t->std & V4L2_STD_PAL_I) {
180 config |= TEMIC_SET_PAL_I;
182 } else if (t->std & V4L2_STD_PAL_DK) {
183 config |= TEMIC_SET_PAL_DK;
185 } else if (t->std & V4L2_STD_SECAM_L) {
186 config |= TEMIC_SET_PAL_L;
191 case TUNER_PHILIPS_FQ1216ME:
194 if (t->std & (V4L2_STD_PAL_BG|V4L2_STD_PAL_DK)) {
195 config |= PHILIPS_SET_PAL_BGDK;
197 } else if (t->std & V4L2_STD_PAL_I) {
198 config |= PHILIPS_SET_PAL_I;
200 } else if (t->std & V4L2_STD_SECAM_L) {
201 config |= PHILIPS_SET_PAL_L;
206 case TUNER_PHILIPS_ATSC:
207 /* 0x00 -> ATSC antenna input 1 */
208 /* 0x01 -> ATSC antenna input 2 */
209 /* 0x02 -> NTSC antenna input 1 */
210 /* 0x03 -> NTSC antenna input 2 */
212 if (!(t->std & V4L2_STD_ATSC))
217 case TUNER_MICROTUNE_4042FI5:
218 /* Set the charge pump for fast tuning */
219 tun->params[j].config |= TUNER_CHARGE_PUMP;
222 case TUNER_PHILIPS_TUV1236D:
223 /* 0x40 -> ATSC antenna input 1 */
224 /* 0x48 -> ATSC antenna input 2 */
225 /* 0x00 -> NTSC antenna input 1 */
226 /* 0x08 -> NTSC antenna input 2 */
232 if (t->std & V4L2_STD_ATSC) {
236 /* set to the correct mode (analog or digital) */
239 if (2 != (rc = i2c_master_send(c,&buffer[0],2)))
240 tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
241 if (2 != (rc = i2c_master_send(c,&buffer[2],2)))
242 tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
248 /* IFPCoff = Video Intermediate Frequency - Vif:
249 940 =16*58.75 NTSC/J (Japan)
250 732 =16*45.75 M/N STD
251 704 =16*44 ATSC (at DVB code)
253 622.4=16*38.90 B/G D/K I, L STD
254 592 =16*37.00 D China
255 590 =16.36.875 B Australia
256 543.2=16*33.95 L' STD
257 171.2=16*10.70 FM Radio (at set_radio_freq)
260 if (t->std == V4L2_STD_NTSC_M_JP) {
262 } else if ((t->std & V4L2_STD_MN) &&
263 !(t->std & ~V4L2_STD_MN)) {
265 } else if (t->std == V4L2_STD_SECAM_LC) {
271 div=freq + IFPCoff + offset;
273 tuner_dbg("Freq= %d.%02d MHz, V_IF=%d.%02d MHz, Offset=%d.%02d MHz, div=%0d\n",
274 freq / 16, freq % 16 * 100 / 16,
275 IFPCoff / 16, IFPCoff % 16 * 100 / 16,
276 offset / 16, offset % 16 * 100 / 16,
279 if (tuners[t->type].params->cb_first_if_lower_freq && div < t->last_div) {
280 buffer[0] = tun->params[j].config;
282 buffer[2] = (div>>8) & 0x7f;
283 buffer[3] = div & 0xff;
285 buffer[0] = (div>>8) & 0x7f;
286 buffer[1] = div & 0xff;
287 buffer[2] = tun->params[j].config;
291 tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
292 buffer[0],buffer[1],buffer[2],buffer[3]);
294 if (4 != (rc = i2c_master_send(c,buffer,4)))
295 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
297 if (t->type == TUNER_MICROTUNE_4042FI5) {
298 // FIXME - this may also work for other tuners
299 unsigned long timeout = jiffies + msecs_to_jiffies(1);
302 /* Wait until the PLL locks */
304 if (time_after(jiffies,timeout))
306 if (1 != (rc = i2c_master_recv(c,&status_byte,1))) {
307 tuner_warn("i2c i/o read error: rc == %d (should be 1)\n",rc);
310 if (status_byte & TUNER_PLL_LOCKED)
315 /* Set the charge pump for optimized phase noise figure */
316 tun->params[j].config &= ~TUNER_CHARGE_PUMP;
317 buffer[0] = (div>>8) & 0x7f;
318 buffer[1] = div & 0xff;
319 buffer[2] = tun->params[j].config;
321 tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
322 buffer[0],buffer[1],buffer[2],buffer[3]);
324 if (4 != (rc = i2c_master_send(c,buffer,4)))
325 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
329 static void default_set_radio_freq(struct i2c_client *c, unsigned int freq)
331 struct tunertype *tun;
332 struct tuner *t = i2c_get_clientdata(c);
337 tun = &tuners[t->type];
338 j = TUNER_PARAM_ANALOG;
340 div = (20 * freq / 16000) + (int)(20*10.7); /* IF 10.7 MHz */
341 buffer[2] = (tun->params[j].config & ~TUNER_RATIO_MASK) | TUNER_RATIO_SELECT_50; /* 50 kHz step */
344 case TUNER_TENA_9533_DI:
345 case TUNER_YMEC_TVF_5533MF:
346 tuner_dbg ("This tuner doesn't have FM. Most cards has a TEA5767 for FM\n");
348 case TUNER_PHILIPS_FM1216ME_MK3:
349 case TUNER_PHILIPS_FM1236_MK3:
350 case TUNER_PHILIPS_FMD1216ME_MK3:
351 case TUNER_LG_NTSC_TAPE:
354 case TUNER_PHILIPS_FM1256_IH3:
355 div = (20 * freq) / 16000 + (int)(33.3 * 20); /* IF 33.3 MHz */
358 case TUNER_LG_PAL_FM:
361 case TUNER_MICROTUNE_4049FM5:
362 div = (20 * freq) / 16000 + (int)(33.3 * 20); /* IF 33.3 MHz */
369 buffer[0] = (div>>8) & 0x7f;
370 buffer[1] = div & 0xff;
371 if (tuners[t->type].params->cb_first_if_lower_freq && div < t->last_div) {
372 buffer[0] = buffer[2];
373 buffer[1] = buffer[3];
374 buffer[2] = (div>>8) & 0x7f;
375 buffer[3] = div & 0xff;
377 buffer[0] = (div>>8) & 0x7f;
378 buffer[1] = div & 0xff;
381 tuner_dbg("radio 0x%02x 0x%02x 0x%02x 0x%02x\n",
382 buffer[0],buffer[1],buffer[2],buffer[3]);
385 if (4 != (rc = i2c_master_send(c,buffer,4)))
386 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
389 int default_tuner_init(struct i2c_client *c)
391 struct tuner *t = i2c_get_clientdata(c);
393 tuner_info("type set to %d (%s)\n",
394 t->type, tuners[t->type].name);
395 strlcpy(c->name, tuners[t->type].name, sizeof(c->name));
397 t->set_tv_freq = default_set_tv_freq;
398 t->set_radio_freq = default_set_radio_freq;
399 t->has_signal = tuner_signal;
400 t->is_stereo = tuner_stereo;
407 * Overrides for Emacs so that we follow Linus's tabbing style.
408 * ---------------------------------------------------------------------------