Merge branch 'block-2.6.24' of git://git.kernel.dk/data/git/linux-2.6-block
[linux-2.6] / drivers / media / video / tuner-simple.c
1 /*
2  * i2c tv tuner chip device driver
3  * controls all those simple 4-control-bytes style tuners.
4  *
5  * This "tuner-simple" module was split apart from the original "tuner" module.
6  */
7 #include <linux/delay.h>
8 #include <linux/i2c.h>
9 #include <linux/videodev.h>
10 #include <media/tuner.h>
11 #include <media/v4l2-common.h>
12 #include <media/tuner-types.h>
13 #include "tuner-i2c.h"
14 #include "tuner-simple.h"
15
16 static int debug = 0;
17 module_param(debug, int, 0644);
18 MODULE_PARM_DESC(debug, "enable verbose debug messages");
19
20 #define PREFIX "tuner-simple "
21
22 static int offset = 0;
23 module_param(offset, int, 0664);
24 MODULE_PARM_DESC(offset,"Allows to specify an offset for tuner");
25
26 /* ---------------------------------------------------------------------- */
27
28 /* tv standard selection for Temic 4046 FM5
29    this value takes the low bits of control byte 2
30    from datasheet Rev.01, Feb.00
31      standard     BG      I       L       L2      D
32      picture IF   38.9    38.9    38.9    33.95   38.9
33      sound 1      33.4    32.9    32.4    40.45   32.4
34      sound 2      33.16
35      NICAM        33.05   32.348  33.05           33.05
36  */
37 #define TEMIC_SET_PAL_I         0x05
38 #define TEMIC_SET_PAL_DK        0x09
39 #define TEMIC_SET_PAL_L         0x0a // SECAM ?
40 #define TEMIC_SET_PAL_L2        0x0b // change IF !
41 #define TEMIC_SET_PAL_BG        0x0c
42
43 /* tv tuner system standard selection for Philips FQ1216ME
44    this value takes the low bits of control byte 2
45    from datasheet "1999 Nov 16" (supersedes "1999 Mar 23")
46      standard           BG      DK      I       L       L`
47      picture carrier    38.90   38.90   38.90   38.90   33.95
48      colour             34.47   34.47   34.47   34.47   38.38
49      sound 1            33.40   32.40   32.90   32.40   40.45
50      sound 2            33.16   -       -       -       -
51      NICAM              33.05   33.05   32.35   33.05   39.80
52  */
53 #define PHILIPS_SET_PAL_I       0x01 /* Bit 2 always zero !*/
54 #define PHILIPS_SET_PAL_BGDK    0x09
55 #define PHILIPS_SET_PAL_L2      0x0a
56 #define PHILIPS_SET_PAL_L       0x0b
57
58 /* system switching for Philips FI1216MF MK2
59    from datasheet "1996 Jul 09",
60     standard         BG     L      L'
61     picture carrier  38.90  38.90  33.95
62     colour           34.47  34.37  38.38
63     sound 1          33.40  32.40  40.45
64     sound 2          33.16  -      -
65     NICAM            33.05  33.05  39.80
66  */
67 #define PHILIPS_MF_SET_STD_BG   0x01 /* Bit 2 must be zero, Bit 3 is system output */
68 #define PHILIPS_MF_SET_STD_L    0x03 /* Used on Secam France */
69 #define PHILIPS_MF_SET_STD_LC   0x02 /* Used on SECAM L' */
70
71 /* Control byte */
72
73 #define TUNER_RATIO_MASK        0x06 /* Bit cb1:cb2 */
74 #define TUNER_RATIO_SELECT_50   0x00
75 #define TUNER_RATIO_SELECT_32   0x02
76 #define TUNER_RATIO_SELECT_166  0x04
77 #define TUNER_RATIO_SELECT_62   0x06
78
79 #define TUNER_CHARGE_PUMP       0x40  /* Bit cb6 */
80
81 /* Status byte */
82
83 #define TUNER_POR         0x80
84 #define TUNER_FL          0x40
85 #define TUNER_MODE        0x38
86 #define TUNER_AFC         0x07
87 #define TUNER_SIGNAL      0x07
88 #define TUNER_STEREO      0x10
89
90 #define TUNER_PLL_LOCKED   0x40
91 #define TUNER_STEREO_MK3   0x04
92
93 struct tuner_simple_priv {
94         u16 last_div;
95         struct tuner_i2c_props i2c_props;
96
97         unsigned int type;
98         struct tunertype *tun;
99
100         u32 frequency;
101 };
102
103 /* ---------------------------------------------------------------------- */
104
105 static int tuner_read_status(struct dvb_frontend *fe)
106 {
107         struct tuner_simple_priv *priv = fe->tuner_priv;
108         unsigned char byte;
109
110         if (1 != tuner_i2c_xfer_recv(&priv->i2c_props,&byte,1))
111                 return 0;
112
113         return byte;
114 }
115
116 static inline int tuner_signal(const int status)
117 {
118         return (status & TUNER_SIGNAL) << 13;
119 }
120
121 static inline int tuner_stereo(const int type, const int status)
122 {
123         switch (type) {
124                 case TUNER_PHILIPS_FM1216ME_MK3:
125                 case TUNER_PHILIPS_FM1236_MK3:
126                 case TUNER_PHILIPS_FM1256_IH3:
127                 case TUNER_LG_NTSC_TAPE:
128                         return ((status & TUNER_SIGNAL) == TUNER_STEREO_MK3);
129                 default:
130                         return status & TUNER_STEREO;
131         }
132 }
133
134 static inline int tuner_islocked(const int status)
135 {
136         return (status & TUNER_FL);
137 }
138
139 static inline int tuner_afcstatus(const int status)
140 {
141         return (status & TUNER_AFC) - 2;
142 }
143
144
145 static int simple_get_status(struct dvb_frontend *fe, u32 *status)
146 {
147         struct tuner_simple_priv *priv = fe->tuner_priv;
148         int tuner_status = tuner_read_status(fe);
149
150         *status = 0;
151
152         if (tuner_islocked(tuner_status))
153                 *status = TUNER_STATUS_LOCKED;
154         if (tuner_stereo(priv->type, tuner_status))
155                 *status |= TUNER_STATUS_STEREO;
156
157         tuner_dbg("AFC Status: %d\n", tuner_afcstatus(tuner_status));
158
159         return 0;
160 }
161
162 static int simple_get_rf_strength(struct dvb_frontend *fe, u16 *strength)
163 {
164         struct tuner_simple_priv *priv = fe->tuner_priv;
165         int signal = tuner_signal(tuner_read_status(fe));
166
167         *strength = signal;
168
169         tuner_dbg("Signal strength: %d\n", signal);
170
171         return 0;
172 }
173
174 /* ---------------------------------------------------------------------- */
175
176 static int simple_set_tv_freq(struct dvb_frontend *fe,
177                               struct analog_parameters *params)
178 {
179         struct tuner_simple_priv *priv = fe->tuner_priv;
180         u8 config, cb, tuneraddr;
181         u16 div;
182         struct tunertype *tun;
183         u8 buffer[4];
184         int rc, IFPCoff, i, j;
185         enum param_type desired_type;
186         struct tuner_params *t_params;
187
188         tun = priv->tun;
189
190         /* IFPCoff = Video Intermediate Frequency - Vif:
191                 940  =16*58.75  NTSC/J (Japan)
192                 732  =16*45.75  M/N STD
193                 704  =16*44     ATSC (at DVB code)
194                 632  =16*39.50  I U.K.
195                 622.4=16*38.90  B/G D/K I, L STD
196                 592  =16*37.00  D China
197                 590  =16.36.875 B Australia
198                 543.2=16*33.95  L' STD
199                 171.2=16*10.70  FM Radio (at set_radio_freq)
200         */
201
202         if (params->std == V4L2_STD_NTSC_M_JP) {
203                 IFPCoff      = 940;
204                 desired_type = TUNER_PARAM_TYPE_NTSC;
205         } else if ((params->std & V4L2_STD_MN) &&
206                   !(params->std & ~V4L2_STD_MN)) {
207                 IFPCoff      = 732;
208                 desired_type = TUNER_PARAM_TYPE_NTSC;
209         } else if (params->std == V4L2_STD_SECAM_LC) {
210                 IFPCoff      = 543;
211                 desired_type = TUNER_PARAM_TYPE_SECAM;
212         } else {
213                 IFPCoff      = 623;
214                 desired_type = TUNER_PARAM_TYPE_PAL;
215         }
216
217         for (j = 0; j < tun->count-1; j++) {
218                 if (desired_type != tun->params[j].type)
219                         continue;
220                 break;
221         }
222         /* use default tuner_t_params if desired_type not available */
223         if (desired_type != tun->params[j].type) {
224                 tuner_dbg("IFPCoff = %d: tuner_t_params undefined for tuner %d\n",
225                           IFPCoff, priv->type);
226                 j = 0;
227         }
228         t_params = &tun->params[j];
229
230         for (i = 0; i < t_params->count; i++) {
231                 if (params->frequency > t_params->ranges[i].limit)
232                         continue;
233                 break;
234         }
235         if (i == t_params->count) {
236                 tuner_dbg("TV frequency out of range (%d > %d)",
237                                 params->frequency, t_params->ranges[i - 1].limit);
238                 params->frequency = t_params->ranges[--i].limit;
239         }
240         config = t_params->ranges[i].config;
241         cb     = t_params->ranges[i].cb;
242         /*  i == 0 -> VHF_LO
243          *  i == 1 -> VHF_HI
244          *  i == 2 -> UHF     */
245         tuner_dbg("tv: param %d, range %d\n",j,i);
246
247         div=params->frequency + IFPCoff + offset;
248
249         tuner_dbg("Freq= %d.%02d MHz, V_IF=%d.%02d MHz, Offset=%d.%02d MHz, div=%0d\n",
250                                         params->frequency / 16, params->frequency % 16 * 100 / 16,
251                                         IFPCoff / 16, IFPCoff % 16 * 100 / 16,
252                                         offset / 16, offset % 16 * 100 / 16,
253                                         div);
254
255         /* tv norm specific stuff for multi-norm tuners */
256         switch (priv->type) {
257         case TUNER_PHILIPS_SECAM: // FI1216MF
258                 /* 0x01 -> ??? no change ??? */
259                 /* 0x02 -> PAL BDGHI / SECAM L */
260                 /* 0x04 -> ??? PAL others / SECAM others ??? */
261                 cb &= ~0x03;
262                 if (params->std & V4L2_STD_SECAM_L) //also valid for V4L2_STD_SECAM
263                         cb |= PHILIPS_MF_SET_STD_L;
264                 else if (params->std & V4L2_STD_SECAM_LC)
265                         cb |= PHILIPS_MF_SET_STD_LC;
266                 else /* V4L2_STD_B|V4L2_STD_GH */
267                         cb |= PHILIPS_MF_SET_STD_BG;
268                 break;
269
270         case TUNER_TEMIC_4046FM5:
271                 cb &= ~0x0f;
272
273                 if (params->std & V4L2_STD_PAL_BG) {
274                         cb |= TEMIC_SET_PAL_BG;
275
276                 } else if (params->std & V4L2_STD_PAL_I) {
277                         cb |= TEMIC_SET_PAL_I;
278
279                 } else if (params->std & V4L2_STD_PAL_DK) {
280                         cb |= TEMIC_SET_PAL_DK;
281
282                 } else if (params->std & V4L2_STD_SECAM_L) {
283                         cb |= TEMIC_SET_PAL_L;
284
285                 }
286                 break;
287
288         case TUNER_PHILIPS_FQ1216ME:
289                 cb &= ~0x0f;
290
291                 if (params->std & (V4L2_STD_PAL_BG|V4L2_STD_PAL_DK)) {
292                         cb |= PHILIPS_SET_PAL_BGDK;
293
294                 } else if (params->std & V4L2_STD_PAL_I) {
295                         cb |= PHILIPS_SET_PAL_I;
296
297                 } else if (params->std & V4L2_STD_SECAM_L) {
298                         cb |= PHILIPS_SET_PAL_L;
299
300                 }
301                 break;
302
303         case TUNER_PHILIPS_ATSC:
304                 /* 0x00 -> ATSC antenna input 1 */
305                 /* 0x01 -> ATSC antenna input 2 */
306                 /* 0x02 -> NTSC antenna input 1 */
307                 /* 0x03 -> NTSC antenna input 2 */
308                 cb &= ~0x03;
309                 if (!(params->std & V4L2_STD_ATSC))
310                         cb |= 2;
311                 /* FIXME: input */
312                 break;
313
314         case TUNER_MICROTUNE_4042FI5:
315                 /* Set the charge pump for fast tuning */
316                 config |= TUNER_CHARGE_PUMP;
317                 break;
318
319         case TUNER_PHILIPS_TUV1236D:
320                 /* 0x40 -> ATSC antenna input 1 */
321                 /* 0x48 -> ATSC antenna input 2 */
322                 /* 0x00 -> NTSC antenna input 1 */
323                 /* 0x08 -> NTSC antenna input 2 */
324                 buffer[0] = 0x14;
325                 buffer[1] = 0x00;
326                 buffer[2] = 0x17;
327                 buffer[3] = 0x00;
328                 cb &= ~0x40;
329                 if (params->std & V4L2_STD_ATSC) {
330                         cb |= 0x40;
331                         buffer[1] = 0x04;
332                 }
333                 /* set to the correct mode (analog or digital) */
334                 tuneraddr = priv->i2c_props.addr;
335                 priv->i2c_props.addr = 0x0a;
336                 if (2 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,&buffer[0],2)))
337                         tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
338                 if (2 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,&buffer[2],2)))
339                         tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
340                 priv->i2c_props.addr = tuneraddr;
341                 /* FIXME: input */
342                 break;
343         }
344
345         if (t_params->cb_first_if_lower_freq && div < priv->last_div) {
346                 buffer[0] = config;
347                 buffer[1] = cb;
348                 buffer[2] = (div>>8) & 0x7f;
349                 buffer[3] = div      & 0xff;
350         } else {
351                 buffer[0] = (div>>8) & 0x7f;
352                 buffer[1] = div      & 0xff;
353                 buffer[2] = config;
354                 buffer[3] = cb;
355         }
356         priv->last_div = div;
357         if (t_params->has_tda9887) {
358                 int config = 0;
359                 int is_secam_l = (params->std & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC)) &&
360                         !(params->std & ~(V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC));
361
362                 if (params->std == V4L2_STD_SECAM_LC) {
363                         if (t_params->port1_active ^ t_params->port1_invert_for_secam_lc)
364                                 config |= TDA9887_PORT1_ACTIVE;
365                         if (t_params->port2_active ^ t_params->port2_invert_for_secam_lc)
366                                 config |= TDA9887_PORT2_ACTIVE;
367                 }
368                 else {
369                         if (t_params->port1_active)
370                                 config |= TDA9887_PORT1_ACTIVE;
371                         if (t_params->port2_active)
372                                 config |= TDA9887_PORT2_ACTIVE;
373                 }
374                 if (t_params->intercarrier_mode)
375                         config |= TDA9887_INTERCARRIER;
376                 if (is_secam_l) {
377                         if (i == 0 && t_params->default_top_secam_low)
378                                 config |= TDA9887_TOP(t_params->default_top_secam_low);
379                         else if (i == 1 && t_params->default_top_secam_mid)
380                                 config |= TDA9887_TOP(t_params->default_top_secam_mid);
381                         else if (t_params->default_top_secam_high)
382                                 config |= TDA9887_TOP(t_params->default_top_secam_high);
383                 }
384                 else {
385                         if (i == 0 && t_params->default_top_low)
386                                 config |= TDA9887_TOP(t_params->default_top_low);
387                         else if (i == 1 && t_params->default_top_mid)
388                                 config |= TDA9887_TOP(t_params->default_top_mid);
389                         else if (t_params->default_top_high)
390                                 config |= TDA9887_TOP(t_params->default_top_high);
391                 }
392                 if (t_params->default_pll_gating_18)
393                         config |= TDA9887_GATING_18;
394                 i2c_clients_command(priv->i2c_props.adap, TDA9887_SET_CONFIG, &config);
395         }
396         tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
397                   buffer[0],buffer[1],buffer[2],buffer[3]);
398
399         if (4 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,buffer,4)))
400                 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
401
402         switch (priv->type) {
403         case TUNER_LG_TDVS_H06XF:
404                 /* Set the Auxiliary Byte. */
405                 buffer[0] = buffer[2];
406                 buffer[0] &= ~0x20;
407                 buffer[0] |= 0x18;
408                 buffer[1] = 0x20;
409                 tuner_dbg("tv 0x%02x 0x%02x\n",buffer[0],buffer[1]);
410
411                 if (2 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,buffer,2)))
412                         tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc);
413                 break;
414         case TUNER_MICROTUNE_4042FI5:
415         {
416                 // FIXME - this may also work for other tuners
417                 unsigned long timeout = jiffies + msecs_to_jiffies(1);
418                 u8 status_byte = 0;
419
420                 /* Wait until the PLL locks */
421                 for (;;) {
422                         if (time_after(jiffies,timeout))
423                                 return 0;
424                         if (1 != (rc = tuner_i2c_xfer_recv(&priv->i2c_props,&status_byte,1))) {
425                                 tuner_warn("i2c i/o read error: rc == %d (should be 1)\n",rc);
426                                 break;
427                         }
428                         if (status_byte & TUNER_PLL_LOCKED)
429                                 break;
430                         udelay(10);
431                 }
432
433                 /* Set the charge pump for optimized phase noise figure */
434                 config &= ~TUNER_CHARGE_PUMP;
435                 buffer[0] = (div>>8) & 0x7f;
436                 buffer[1] = div      & 0xff;
437                 buffer[2] = config;
438                 buffer[3] = cb;
439                 tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
440                           buffer[0],buffer[1],buffer[2],buffer[3]);
441
442                 if (4 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,buffer,4)))
443                         tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
444                 break;
445         }
446         }
447         return 0;
448 }
449
450 static int simple_set_radio_freq(struct dvb_frontend *fe,
451                                  struct analog_parameters *params)
452 {
453         struct tunertype *tun;
454         struct tuner_simple_priv *priv = fe->tuner_priv;
455         u8 buffer[4];
456         u16 div;
457         int rc, j;
458         struct tuner_params *t_params;
459         unsigned int freq = params->frequency;
460
461         tun = priv->tun;
462
463         for (j = tun->count-1; j > 0; j--)
464                 if (tun->params[j].type == TUNER_PARAM_TYPE_RADIO)
465                         break;
466         /* default t_params (j=0) will be used if desired type wasn't found */
467         t_params = &tun->params[j];
468
469         /* Select Radio 1st IF used */
470         switch (t_params->radio_if) {
471         case 0: /* 10.7 MHz */
472                 freq += (unsigned int)(10.7*16000);
473                 break;
474         case 1: /* 33.3 MHz */
475                 freq += (unsigned int)(33.3*16000);
476                 break;
477         case 2: /* 41.3 MHz */
478                 freq += (unsigned int)(41.3*16000);
479                 break;
480         default:
481                 tuner_warn("Unsupported radio_if value %d\n", t_params->radio_if);
482                 return 0;
483         }
484
485         /* Bandswitch byte */
486         switch (priv->type) {
487         case TUNER_TENA_9533_DI:
488         case TUNER_YMEC_TVF_5533MF:
489                 tuner_dbg("This tuner doesn't have FM. Most cards have a TEA5767 for FM\n");
490                 return 0;
491         case TUNER_PHILIPS_FM1216ME_MK3:
492         case TUNER_PHILIPS_FM1236_MK3:
493         case TUNER_PHILIPS_FMD1216ME_MK3:
494         case TUNER_LG_NTSC_TAPE:
495         case TUNER_PHILIPS_FM1256_IH3:
496                 buffer[3] = 0x19;
497                 break;
498         case TUNER_TNF_5335MF:
499                 buffer[3] = 0x11;
500                 break;
501         case TUNER_LG_PAL_FM:
502                 buffer[3] = 0xa5;
503                 break;
504         case TUNER_THOMSON_DTT761X:
505                 buffer[3] = 0x39;
506                 break;
507         case TUNER_MICROTUNE_4049FM5:
508         default:
509                 buffer[3] = 0xa4;
510                 break;
511         }
512
513         buffer[2] = (t_params->ranges[0].config & ~TUNER_RATIO_MASK) |
514                     TUNER_RATIO_SELECT_50; /* 50 kHz step */
515
516         /* Convert from 1/16 kHz V4L steps to 1/20 MHz (=50 kHz) PLL steps
517            freq * (1 Mhz / 16000 V4L steps) * (20 PLL steps / 1 MHz) =
518            freq * (1/800) */
519         div = (freq + 400) / 800;
520
521         if (t_params->cb_first_if_lower_freq && div < priv->last_div) {
522                 buffer[0] = buffer[2];
523                 buffer[1] = buffer[3];
524                 buffer[2] = (div>>8) & 0x7f;
525                 buffer[3] = div      & 0xff;
526         } else {
527                 buffer[0] = (div>>8) & 0x7f;
528                 buffer[1] = div      & 0xff;
529         }
530
531         tuner_dbg("radio 0x%02x 0x%02x 0x%02x 0x%02x\n",
532                buffer[0],buffer[1],buffer[2],buffer[3]);
533         priv->last_div = div;
534
535         if (t_params->has_tda9887) {
536                 int config = 0;
537                 if (t_params->port1_active && !t_params->port1_fm_high_sensitivity)
538                         config |= TDA9887_PORT1_ACTIVE;
539                 if (t_params->port2_active && !t_params->port2_fm_high_sensitivity)
540                         config |= TDA9887_PORT2_ACTIVE;
541                 if (t_params->intercarrier_mode)
542                         config |= TDA9887_INTERCARRIER;
543 /*              if (t_params->port1_set_for_fm_mono)
544                         config &= ~TDA9887_PORT1_ACTIVE;*/
545                 if (t_params->fm_gain_normal)
546                         config |= TDA9887_GAIN_NORMAL;
547                 if (t_params->radio_if == 2)
548                         config |= TDA9887_RIF_41_3;
549                 i2c_clients_command(priv->i2c_props.adap, TDA9887_SET_CONFIG, &config);
550         }
551         if (4 != (rc = tuner_i2c_xfer_send(&priv->i2c_props,buffer,4)))
552                 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc);
553
554         return 0;
555 }
556
557 static int simple_set_params(struct dvb_frontend *fe,
558                              struct analog_parameters *params)
559 {
560         struct tuner_simple_priv *priv = fe->tuner_priv;
561         int ret = -EINVAL;
562
563         switch (params->mode) {
564         case V4L2_TUNER_RADIO:
565                 ret = simple_set_radio_freq(fe, params);
566                 priv->frequency = params->frequency * 125 / 2;
567                 break;
568         case V4L2_TUNER_ANALOG_TV:
569         case V4L2_TUNER_DIGITAL_TV:
570                 ret = simple_set_tv_freq(fe, params);
571                 priv->frequency = params->frequency * 62500;
572                 break;
573         }
574
575         return ret;
576 }
577
578
579 static int simple_release(struct dvb_frontend *fe)
580 {
581         kfree(fe->tuner_priv);
582         fe->tuner_priv = NULL;
583
584         return 0;
585 }
586
587 static int simple_get_frequency(struct dvb_frontend *fe, u32 *frequency)
588 {
589         struct tuner_simple_priv *priv = fe->tuner_priv;
590         *frequency = priv->frequency;
591         return 0;
592 }
593
594 static struct dvb_tuner_ops simple_tuner_ops = {
595         .set_analog_params = simple_set_params,
596         .release           = simple_release,
597         .get_frequency     = simple_get_frequency,
598         .get_status        = simple_get_status,
599         .get_rf_strength   = simple_get_rf_strength,
600 };
601
602 struct dvb_frontend *simple_tuner_attach(struct dvb_frontend *fe,
603                                          struct i2c_adapter *i2c_adap,
604                                          u8 i2c_addr,
605                                          struct simple_tuner_config *cfg)
606 {
607         struct tuner_simple_priv *priv = NULL;
608
609         priv = kzalloc(sizeof(struct tuner_simple_priv), GFP_KERNEL);
610         if (priv == NULL)
611                 return NULL;
612         fe->tuner_priv = priv;
613
614         priv->i2c_props.addr = i2c_addr;
615         priv->i2c_props.adap = i2c_adap;
616         priv->type = cfg->type;
617         priv->tun  = cfg->tun;
618
619         memcpy(&fe->ops.tuner_ops, &simple_tuner_ops, sizeof(struct dvb_tuner_ops));
620
621         tuner_info("type set to %d (%s)\n", cfg->type, cfg->tun->name);
622
623         strlcpy(fe->ops.tuner_ops.info.name, cfg->tun->name, sizeof(fe->ops.tuner_ops.info.name));
624
625         return fe;
626 }
627
628
629 EXPORT_SYMBOL_GPL(simple_tuner_attach);
630
631 MODULE_DESCRIPTION("Simple 4-control-bytes style tuner driver");
632 MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer");
633 MODULE_LICENSE("GPL");
634
635 /*
636  * Overrides for Emacs so that we follow Linus's tabbing style.
637  * ---------------------------------------------------------------------------
638  * Local variables:
639  * c-basic-offset: 8
640  * End:
641  */