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 stereo
= ((status
& TUNER_SIGNAL
) == TUNER_STEREO_MK3
);
124 stereo
= status
& TUNER_STEREO
;
131 /* ---------------------------------------------------------------------- */
133 static void default_set_tv_freq(struct i2c_client
*c
, unsigned int freq
)
135 struct tuner
*t
= i2c_get_clientdata(c
);
136 u8 config
, cb
, tuneraddr
;
138 struct tunertype
*tun
;
140 int rc
, IFPCoff
, i
, j
;
142 tun
= &tuners
[t
->type
];
143 j
= TUNER_PARAM_ANALOG
;
145 /* IFPCoff = Video Intermediate Frequency - Vif:
146 940 =16*58.75 NTSC/J (Japan)
147 732 =16*45.75 M/N STD
148 704 =16*44 ATSC (at DVB code)
150 622.4=16*38.90 B/G D/K I, L STD
151 592 =16*37.00 D China
152 590 =16.36.875 B Australia
153 543.2=16*33.95 L' STD
154 171.2=16*10.70 FM Radio (at set_radio_freq)
157 if (t
->std
== V4L2_STD_NTSC_M_JP
) {
159 } else if ((t
->std
& V4L2_STD_MN
) &&
160 !(t
->std
& ~V4L2_STD_MN
)) {
162 } else if (t
->std
== V4L2_STD_SECAM_LC
) {
168 for (i
= 0; i
< tun
->params
[j
].count
; i
++) {
169 if (freq
> tun
->params
[j
].ranges
[i
].limit
)
173 if (i
== tun
->params
[j
].count
) {
174 tuner_dbg("TV frequency out of range (%d > %d)",
175 freq
, tun
->params
[j
].ranges
[i
- 1].limit
);
176 freq
= tun
->params
[j
].ranges
[--i
].limit
;
178 config
= tun
->params
[j
].ranges
[i
].config
;
179 cb
= tun
->params
[j
].ranges
[i
].cb
;
183 tuner_dbg("tv: range %d\n",i
);
185 div
=freq
+ IFPCoff
+ offset
;
187 tuner_dbg("Freq= %d.%02d MHz, V_IF=%d.%02d MHz, Offset=%d.%02d MHz, div=%0d\n",
188 freq
/ 16, freq
% 16 * 100 / 16,
189 IFPCoff
/ 16, IFPCoff
% 16 * 100 / 16,
190 offset
/ 16, offset
% 16 * 100 / 16,
193 /* tv norm specific stuff for multi-norm tuners */
195 case TUNER_PHILIPS_SECAM
: // FI1216MF
196 /* 0x01 -> ??? no change ??? */
197 /* 0x02 -> PAL BDGHI / SECAM L */
198 /* 0x04 -> ??? PAL others / SECAM others ??? */
200 if (t
->std
& V4L2_STD_SECAM
)
204 case TUNER_TEMIC_4046FM5
:
207 if (t
->std
& V4L2_STD_PAL_BG
) {
208 cb
|= TEMIC_SET_PAL_BG
;
210 } else if (t
->std
& V4L2_STD_PAL_I
) {
211 cb
|= TEMIC_SET_PAL_I
;
213 } else if (t
->std
& V4L2_STD_PAL_DK
) {
214 cb
|= TEMIC_SET_PAL_DK
;
216 } else if (t
->std
& V4L2_STD_SECAM_L
) {
217 cb
|= TEMIC_SET_PAL_L
;
222 case TUNER_PHILIPS_FQ1216ME
:
225 if (t
->std
& (V4L2_STD_PAL_BG
|V4L2_STD_PAL_DK
)) {
226 cb
|= PHILIPS_SET_PAL_BGDK
;
228 } else if (t
->std
& V4L2_STD_PAL_I
) {
229 cb
|= PHILIPS_SET_PAL_I
;
231 } else if (t
->std
& V4L2_STD_SECAM_L
) {
232 cb
|= PHILIPS_SET_PAL_L
;
237 case TUNER_PHILIPS_ATSC
:
238 /* 0x00 -> ATSC antenna input 1 */
239 /* 0x01 -> ATSC antenna input 2 */
240 /* 0x02 -> NTSC antenna input 1 */
241 /* 0x03 -> NTSC antenna input 2 */
243 if (!(t
->std
& V4L2_STD_ATSC
))
248 case TUNER_MICROTUNE_4042FI5
:
249 /* Set the charge pump for fast tuning */
250 config
|= TUNER_CHARGE_PUMP
;
253 case TUNER_PHILIPS_TUV1236D
:
254 /* 0x40 -> ATSC antenna input 1 */
255 /* 0x48 -> ATSC antenna input 2 */
256 /* 0x00 -> NTSC antenna input 1 */
257 /* 0x08 -> NTSC antenna input 2 */
263 if (t
->std
& V4L2_STD_ATSC
) {
267 /* set to the correct mode (analog or digital) */
270 if (2 != (rc
= i2c_master_send(c
,&buffer
[0],2)))
271 tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc
);
272 if (2 != (rc
= i2c_master_send(c
,&buffer
[2],2)))
273 tuner_warn("i2c i/o error: rc == %d (should be 2)\n",rc
);
279 if (tuners
[t
->type
].params
->cb_first_if_lower_freq
&& div
< t
->last_div
) {
282 buffer
[2] = (div
>>8) & 0x7f;
283 buffer
[3] = div
& 0xff;
285 buffer
[0] = (div
>>8) & 0x7f;
286 buffer
[1] = div
& 0xff;
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 config
&= ~TUNER_CHARGE_PUMP
;
317 buffer
[0] = (div
>>8) & 0x7f;
318 buffer
[1] = div
& 0xff;
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
].ranges
[0].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
:
353 case TUNER_PHILIPS_FM1256_IH3
:
354 div
= (20 * freq
) / 16000 + (int)(33.3 * 20); /* IF 33.3 MHz */
357 case TUNER_LG_PAL_FM
:
360 case TUNER_MICROTUNE_4049FM5
:
361 div
= (20 * freq
) / 16000 + (int)(33.3 * 20); /* IF 33.3 MHz */
368 buffer
[0] = (div
>>8) & 0x7f;
369 buffer
[1] = div
& 0xff;
370 if (tuners
[t
->type
].params
->cb_first_if_lower_freq
&& div
< t
->last_div
) {
371 buffer
[0] = buffer
[2];
372 buffer
[1] = buffer
[3];
373 buffer
[2] = (div
>>8) & 0x7f;
374 buffer
[3] = div
& 0xff;
376 buffer
[0] = (div
>>8) & 0x7f;
377 buffer
[1] = div
& 0xff;
380 tuner_dbg("radio 0x%02x 0x%02x 0x%02x 0x%02x\n",
381 buffer
[0],buffer
[1],buffer
[2],buffer
[3]);
384 if (4 != (rc
= i2c_master_send(c
,buffer
,4)))
385 tuner_warn("i2c i/o error: rc == %d (should be 4)\n",rc
);
388 int default_tuner_init(struct i2c_client
*c
)
390 struct tuner
*t
= i2c_get_clientdata(c
);
392 tuner_info("type set to %d (%s)\n",
393 t
->type
, tuners
[t
->type
].name
);
394 strlcpy(c
->name
, tuners
[t
->type
].name
, sizeof(c
->name
));
396 t
->set_tv_freq
= default_set_tv_freq
;
397 t
->set_radio_freq
= default_set_radio_freq
;
398 t
->has_signal
= tuner_signal
;
399 t
->is_stereo
= tuner_stereo
;
406 * Overrides for Emacs so that we follow Linus's tabbing style.
407 * ---------------------------------------------------------------------------