1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * i2c tv tuner chip device driver |
4 | * core core, i.e. kernel interfaces, registering and so on |
5 | * |
6 | * Copyright(c) by Ralph Metzler, Gerd Knorr, Gunther Mayer |
7 | * |
8 | * Copyright(c) 2005-2011 by Mauro Carvalho Chehab |
9 | * - Added support for a separate Radio tuner |
10 | * - Major rework and cleanups at the code |
11 | * |
12 | * This driver supports many devices and the idea is to let the driver |
13 | * detect which device is present. So rather than listing all supported |
14 | * devices here, we pretend to support a single, fake device type that will |
15 | * handle both radio and analog TV tuning. |
16 | */ |
17 | |
18 | #include <linux/module.h> |
19 | #include <linux/kernel.h> |
20 | #include <linux/string.h> |
21 | #include <linux/timer.h> |
22 | #include <linux/delay.h> |
23 | #include <linux/errno.h> |
24 | #include <linux/slab.h> |
25 | #include <linux/poll.h> |
26 | #include <linux/i2c.h> |
27 | #include <linux/types.h> |
28 | #include <linux/init.h> |
29 | #include <linux/videodev2.h> |
30 | #include <media/tuner.h> |
31 | #include <media/tuner-types.h> |
32 | #include <media/v4l2-device.h> |
33 | #include <media/v4l2-ioctl.h> |
34 | #include "mt20xx.h" |
35 | #include "tda8290.h" |
36 | #include "tea5761.h" |
37 | #include "tea5767.h" |
38 | #include "xc2028.h" |
39 | #include "tuner-simple.h" |
40 | #include "tda9887.h" |
41 | #include "xc5000.h" |
42 | #include "tda18271.h" |
43 | #include "xc4000.h" |
44 | |
45 | #define UNSET (-1U) |
46 | |
47 | /* |
48 | * Driver modprobe parameters |
49 | */ |
50 | |
51 | /* insmod options used at init time => read/only */ |
52 | static unsigned int addr; |
53 | static unsigned int no_autodetect; |
54 | static unsigned int show_i2c; |
55 | |
56 | module_param(addr, int, 0444); |
57 | module_param(no_autodetect, int, 0444); |
58 | module_param(show_i2c, int, 0444); |
59 | |
60 | /* insmod options used at runtime => read/write */ |
61 | static int tuner_debug; |
62 | static unsigned int tv_range[2] = { 44, 958 }; |
63 | static unsigned int radio_range[2] = { 65, 108 }; |
64 | static char pal[] = "--" ; |
65 | static char secam[] = "--" ; |
66 | static char ntsc[] = "-" ; |
67 | |
68 | module_param_named(debug, tuner_debug, int, 0644); |
69 | module_param_array(tv_range, int, NULL, 0644); |
70 | module_param_array(radio_range, int, NULL, 0644); |
71 | module_param_string(pal, pal, sizeof(pal), 0644); |
72 | module_param_string(secam, secam, sizeof(secam), 0644); |
73 | module_param_string(ntsc, ntsc, sizeof(ntsc), 0644); |
74 | |
75 | /* |
76 | * Static vars |
77 | */ |
78 | |
79 | static LIST_HEAD(tuner_list); |
80 | static const struct v4l2_subdev_ops tuner_ops; |
81 | |
82 | /* |
83 | * Debug macros |
84 | */ |
85 | |
86 | #undef pr_fmt |
87 | |
88 | #define pr_fmt(fmt) KBUILD_MODNAME ": %d-%04x: " fmt, \ |
89 | i2c_adapter_id(t->i2c->adapter), t->i2c->addr |
90 | |
91 | |
92 | #define dprintk(fmt, arg...) do { \ |
93 | if (tuner_debug) \ |
94 | printk(KERN_DEBUG pr_fmt("%s: " fmt), __func__, ##arg); \ |
95 | } while (0) |
96 | |
97 | /* |
98 | * Internal enums/struct used inside the driver |
99 | */ |
100 | |
101 | /** |
102 | * enum tuner_pad_index - tuner pad index for MEDIA_ENT_F_TUNER |
103 | * |
104 | * @TUNER_PAD_RF_INPUT: |
105 | * Radiofrequency (RF) sink pad, usually linked to a RF connector entity. |
106 | * @TUNER_PAD_OUTPUT: |
107 | * tuner video output source pad. Contains the video chrominance |
108 | * and luminance or the hole bandwidth of the signal converted to |
109 | * an Intermediate Frequency (IF) or to baseband (on zero-IF tuners). |
110 | * @TUNER_PAD_AUD_OUT: |
111 | * Tuner audio output source pad. Tuners used to decode analog TV |
112 | * signals have an extra pad for audio output. Old tuners use an |
113 | * analog stage with a saw filter for the audio IF frequency. The |
114 | * output of the pad is, in this case, the audio IF, with should be |
115 | * decoded either by the bridge chipset (that's the case of cx2388x |
116 | * chipsets) or may require an external IF sound processor, like |
117 | * msp34xx. On modern silicon tuners, the audio IF decoder is usually |
118 | * incorporated at the tuner. On such case, the output of this pad |
119 | * is an audio sampled data. |
120 | * @TUNER_NUM_PADS: |
121 | * Number of pads of the tuner. |
122 | */ |
123 | enum tuner_pad_index { |
124 | TUNER_PAD_RF_INPUT, |
125 | TUNER_PAD_OUTPUT, |
126 | TUNER_PAD_AUD_OUT, |
127 | TUNER_NUM_PADS |
128 | }; |
129 | |
130 | /** |
131 | * enum if_vid_dec_pad_index - video IF-PLL pad index |
132 | * for MEDIA_ENT_F_IF_VID_DECODER |
133 | * |
134 | * @IF_VID_DEC_PAD_IF_INPUT: |
135 | * video Intermediate Frequency (IF) sink pad |
136 | * @IF_VID_DEC_PAD_OUT: |
137 | * IF-PLL video output source pad. Contains the video chrominance |
138 | * and luminance IF signals. |
139 | * @IF_VID_DEC_PAD_NUM_PADS: |
140 | * Number of pads of the video IF-PLL. |
141 | */ |
142 | enum if_vid_dec_pad_index { |
143 | IF_VID_DEC_PAD_IF_INPUT, |
144 | IF_VID_DEC_PAD_OUT, |
145 | IF_VID_DEC_PAD_NUM_PADS |
146 | }; |
147 | |
148 | struct tuner { |
149 | /* device */ |
150 | struct dvb_frontend fe; |
151 | struct i2c_client *i2c; |
152 | struct v4l2_subdev sd; |
153 | struct list_head list; |
154 | |
155 | /* keep track of the current settings */ |
156 | v4l2_std_id std; |
157 | unsigned int tv_freq; |
158 | unsigned int radio_freq; |
159 | unsigned int audmode; |
160 | |
161 | enum v4l2_tuner_type mode; |
162 | unsigned int mode_mask; /* Combination of allowable modes */ |
163 | |
164 | bool standby; /* Standby mode */ |
165 | |
166 | unsigned int type; /* chip type id */ |
167 | void *config; |
168 | const char *name; |
169 | |
170 | #if defined(CONFIG_MEDIA_CONTROLLER) |
171 | struct media_pad pad[TUNER_NUM_PADS]; |
172 | #endif |
173 | }; |
174 | |
175 | /* |
176 | * Function prototypes |
177 | */ |
178 | |
179 | static void set_tv_freq(struct i2c_client *c, unsigned int freq); |
180 | static void set_radio_freq(struct i2c_client *c, unsigned int freq); |
181 | |
182 | /* |
183 | * tuner attach/detach logic |
184 | */ |
185 | |
186 | /* This macro allows us to probe dynamically, avoiding static links */ |
187 | #ifdef CONFIG_MEDIA_ATTACH |
188 | #define tuner_symbol_probe(FUNCTION, ARGS...) ({ \ |
189 | int __r = -EINVAL; \ |
190 | typeof(&FUNCTION) __a = symbol_request(FUNCTION); \ |
191 | if (__a) { \ |
192 | __r = (int) __a(ARGS); \ |
193 | symbol_put(FUNCTION); \ |
194 | } else { \ |
195 | printk(KERN_ERR "TUNER: Unable to find " \ |
196 | "symbol "#FUNCTION"()\n"); \ |
197 | } \ |
198 | __r; \ |
199 | }) |
200 | |
201 | static void tuner_detach(struct dvb_frontend *fe) |
202 | { |
203 | if (fe->ops.tuner_ops.release) { |
204 | fe->ops.tuner_ops.release(fe); |
205 | symbol_put_addr(addr: fe->ops.tuner_ops.release); |
206 | } |
207 | if (fe->ops.analog_ops.release) { |
208 | fe->ops.analog_ops.release(fe); |
209 | symbol_put_addr(addr: fe->ops.analog_ops.release); |
210 | } |
211 | } |
212 | #else |
213 | #define tuner_symbol_probe(FUNCTION, ARGS...) ({ \ |
214 | FUNCTION(ARGS); \ |
215 | }) |
216 | |
217 | static void tuner_detach(struct dvb_frontend *fe) |
218 | { |
219 | if (fe->ops.tuner_ops.release) |
220 | fe->ops.tuner_ops.release(fe); |
221 | if (fe->ops.analog_ops.release) |
222 | fe->ops.analog_ops.release(fe); |
223 | } |
224 | #endif |
225 | |
226 | |
227 | static inline struct tuner *to_tuner(struct v4l2_subdev *sd) |
228 | { |
229 | return container_of(sd, struct tuner, sd); |
230 | } |
231 | |
232 | /* |
233 | * struct analog_demod_ops callbacks |
234 | */ |
235 | |
236 | static void fe_set_params(struct dvb_frontend *fe, |
237 | struct analog_parameters *params) |
238 | { |
239 | struct dvb_tuner_ops *fe_tuner_ops = &fe->ops.tuner_ops; |
240 | struct tuner *t = fe->analog_demod_priv; |
241 | |
242 | if (NULL == fe_tuner_ops->set_analog_params) { |
243 | pr_warn("Tuner frontend module has no way to set freq\n" ); |
244 | return; |
245 | } |
246 | fe_tuner_ops->set_analog_params(fe, params); |
247 | } |
248 | |
249 | static void fe_standby(struct dvb_frontend *fe) |
250 | { |
251 | struct dvb_tuner_ops *fe_tuner_ops = &fe->ops.tuner_ops; |
252 | |
253 | if (fe_tuner_ops->sleep) |
254 | fe_tuner_ops->sleep(fe); |
255 | } |
256 | |
257 | static int fe_set_config(struct dvb_frontend *fe, void *priv_cfg) |
258 | { |
259 | struct dvb_tuner_ops *fe_tuner_ops = &fe->ops.tuner_ops; |
260 | struct tuner *t = fe->analog_demod_priv; |
261 | |
262 | if (fe_tuner_ops->set_config) |
263 | return fe_tuner_ops->set_config(fe, priv_cfg); |
264 | |
265 | pr_warn("Tuner frontend module has no way to set config\n" ); |
266 | |
267 | return 0; |
268 | } |
269 | |
270 | static void tuner_status(struct dvb_frontend *fe); |
271 | |
272 | static const struct analog_demod_ops tuner_analog_ops = { |
273 | .set_params = fe_set_params, |
274 | .standby = fe_standby, |
275 | .set_config = fe_set_config, |
276 | .tuner_status = tuner_status |
277 | }; |
278 | |
279 | /* |
280 | * Functions to select between radio and TV and tuner probe/remove functions |
281 | */ |
282 | |
283 | /** |
284 | * set_type - Sets the tuner type for a given device |
285 | * |
286 | * @c: i2c_client descriptor |
287 | * @type: type of the tuner (e. g. tuner number) |
288 | * @new_mode_mask: Indicates if tuner supports TV and/or Radio |
289 | * @new_config: an optional parameter used by a few tuners to adjust |
290 | * internal parameters, like LNA mode |
291 | * @tuner_callback: an optional function to be called when switching |
292 | * to analog mode |
293 | * |
294 | * This function applies the tuner config to tuner specified |
295 | * by tun_setup structure. It contains several per-tuner initialization "magic" |
296 | */ |
297 | static void set_type(struct i2c_client *c, unsigned int type, |
298 | unsigned int new_mode_mask, void *new_config, |
299 | int (*tuner_callback) (void *dev, int component, int cmd, int arg)) |
300 | { |
301 | struct tuner *t = to_tuner(sd: i2c_get_clientdata(client: c)); |
302 | struct dvb_tuner_ops *fe_tuner_ops = &t->fe.ops.tuner_ops; |
303 | struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops; |
304 | unsigned char buffer[4]; |
305 | int tune_now = 1; |
306 | |
307 | if (type == UNSET || type == TUNER_ABSENT) { |
308 | dprintk("tuner 0x%02x: Tuner type absent\n" , c->addr); |
309 | return; |
310 | } |
311 | |
312 | t->type = type; |
313 | t->config = new_config; |
314 | if (tuner_callback != NULL) { |
315 | dprintk("defining GPIO callback\n" ); |
316 | t->fe.callback = tuner_callback; |
317 | } |
318 | |
319 | /* discard private data, in case set_type() was previously called */ |
320 | tuner_detach(fe: &t->fe); |
321 | t->fe.analog_demod_priv = NULL; |
322 | |
323 | switch (t->type) { |
324 | case TUNER_MT2032: |
325 | if (!dvb_attach(microtune_attach, |
326 | &t->fe, t->i2c->adapter, t->i2c->addr)) |
327 | goto attach_failed; |
328 | break; |
329 | case TUNER_PHILIPS_TDA8290: |
330 | { |
331 | if (!dvb_attach(tda829x_attach, &t->fe, t->i2c->adapter, |
332 | t->i2c->addr, t->config)) |
333 | goto attach_failed; |
334 | break; |
335 | } |
336 | case TUNER_TEA5767: |
337 | if (!dvb_attach(tea5767_attach, &t->fe, |
338 | t->i2c->adapter, t->i2c->addr)) |
339 | goto attach_failed; |
340 | t->mode_mask = T_RADIO; |
341 | break; |
342 | case TUNER_TEA5761: |
343 | if (!dvb_attach(tea5761_attach, &t->fe, |
344 | t->i2c->adapter, t->i2c->addr)) |
345 | goto attach_failed; |
346 | t->mode_mask = T_RADIO; |
347 | break; |
348 | case TUNER_PHILIPS_FMD1216ME_MK3: |
349 | case TUNER_PHILIPS_FMD1216MEX_MK3: |
350 | buffer[0] = 0x0b; |
351 | buffer[1] = 0xdc; |
352 | buffer[2] = 0x9c; |
353 | buffer[3] = 0x60; |
354 | i2c_master_send(client: c, buf: buffer, count: 4); |
355 | mdelay(1); |
356 | buffer[2] = 0x86; |
357 | buffer[3] = 0x54; |
358 | i2c_master_send(client: c, buf: buffer, count: 4); |
359 | if (!dvb_attach(simple_tuner_attach, &t->fe, |
360 | t->i2c->adapter, t->i2c->addr, t->type)) |
361 | goto attach_failed; |
362 | break; |
363 | case TUNER_PHILIPS_TD1316: |
364 | buffer[0] = 0x0b; |
365 | buffer[1] = 0xdc; |
366 | buffer[2] = 0x86; |
367 | buffer[3] = 0xa4; |
368 | i2c_master_send(client: c, buf: buffer, count: 4); |
369 | if (!dvb_attach(simple_tuner_attach, &t->fe, |
370 | t->i2c->adapter, t->i2c->addr, t->type)) |
371 | goto attach_failed; |
372 | break; |
373 | case TUNER_XC2028: |
374 | { |
375 | struct xc2028_config cfg = { |
376 | .i2c_adap = t->i2c->adapter, |
377 | .i2c_addr = t->i2c->addr, |
378 | }; |
379 | if (!dvb_attach(xc2028_attach, &t->fe, &cfg)) |
380 | goto attach_failed; |
381 | tune_now = 0; |
382 | break; |
383 | } |
384 | case TUNER_TDA9887: |
385 | if (!dvb_attach(tda9887_attach, |
386 | &t->fe, t->i2c->adapter, t->i2c->addr)) |
387 | goto attach_failed; |
388 | break; |
389 | case TUNER_XC5000: |
390 | { |
391 | struct xc5000_config xc5000_cfg = { |
392 | .i2c_address = t->i2c->addr, |
393 | /* if_khz will be set at dvb_attach() */ |
394 | .if_khz = 0, |
395 | }; |
396 | |
397 | if (!dvb_attach(xc5000_attach, |
398 | &t->fe, t->i2c->adapter, &xc5000_cfg)) |
399 | goto attach_failed; |
400 | tune_now = 0; |
401 | break; |
402 | } |
403 | case TUNER_XC5000C: |
404 | { |
405 | struct xc5000_config xc5000c_cfg = { |
406 | .i2c_address = t->i2c->addr, |
407 | /* if_khz will be set at dvb_attach() */ |
408 | .if_khz = 0, |
409 | .chip_id = XC5000C, |
410 | }; |
411 | |
412 | if (!dvb_attach(xc5000_attach, |
413 | &t->fe, t->i2c->adapter, &xc5000c_cfg)) |
414 | goto attach_failed; |
415 | tune_now = 0; |
416 | break; |
417 | } |
418 | case TUNER_NXP_TDA18271: |
419 | { |
420 | struct tda18271_config cfg = { |
421 | .small_i2c = TDA18271_03_BYTE_CHUNK_INIT, |
422 | }; |
423 | |
424 | if (!dvb_attach(tda18271_attach, &t->fe, t->i2c->addr, |
425 | t->i2c->adapter, &cfg)) |
426 | goto attach_failed; |
427 | tune_now = 0; |
428 | break; |
429 | } |
430 | case TUNER_XC4000: |
431 | { |
432 | struct xc4000_config xc4000_cfg = { |
433 | .i2c_address = t->i2c->addr, |
434 | /* FIXME: the correct parameters will be set */ |
435 | /* only when the digital dvb_attach() occurs */ |
436 | .default_pm = 0, |
437 | .dvb_amplitude = 0, |
438 | .set_smoothedcvbs = 0, |
439 | .if_khz = 0 |
440 | }; |
441 | if (!dvb_attach(xc4000_attach, |
442 | &t->fe, t->i2c->adapter, &xc4000_cfg)) |
443 | goto attach_failed; |
444 | tune_now = 0; |
445 | break; |
446 | } |
447 | default: |
448 | if (!dvb_attach(simple_tuner_attach, &t->fe, |
449 | t->i2c->adapter, t->i2c->addr, t->type)) |
450 | goto attach_failed; |
451 | |
452 | break; |
453 | } |
454 | |
455 | if ((NULL == analog_ops->set_params) && |
456 | (fe_tuner_ops->set_analog_params)) { |
457 | |
458 | t->name = fe_tuner_ops->info.name; |
459 | |
460 | t->fe.analog_demod_priv = t; |
461 | memcpy(analog_ops, &tuner_analog_ops, |
462 | sizeof(struct analog_demod_ops)); |
463 | |
464 | if (fe_tuner_ops->get_rf_strength) |
465 | analog_ops->has_signal = fe_tuner_ops->get_rf_strength; |
466 | if (fe_tuner_ops->get_afc) |
467 | analog_ops->get_afc = fe_tuner_ops->get_afc; |
468 | |
469 | } else { |
470 | t->name = analog_ops->info.name; |
471 | } |
472 | |
473 | #ifdef CONFIG_MEDIA_CONTROLLER |
474 | t->sd.entity.name = t->name; |
475 | #endif |
476 | |
477 | dprintk("type set to %s\n" , t->name); |
478 | |
479 | t->mode_mask = new_mode_mask; |
480 | |
481 | /* Some tuners require more initialization setup before use, |
482 | such as firmware download or device calibration. |
483 | trying to set a frequency here will just fail |
484 | FIXME: better to move set_freq to the tuner code. This is needed |
485 | on analog tuners for PLL to properly work |
486 | */ |
487 | if (tune_now) { |
488 | if (V4L2_TUNER_RADIO == t->mode) |
489 | set_radio_freq(c, freq: t->radio_freq); |
490 | else |
491 | set_tv_freq(c, freq: t->tv_freq); |
492 | } |
493 | |
494 | dprintk("%s %s I2C addr 0x%02x with type %d used for 0x%02x\n" , |
495 | c->adapter->name, c->dev.driver->name, c->addr << 1, type, |
496 | t->mode_mask); |
497 | return; |
498 | |
499 | attach_failed: |
500 | dprintk("Tuner attach for type = %d failed.\n" , t->type); |
501 | t->type = TUNER_ABSENT; |
502 | |
503 | return; |
504 | } |
505 | |
506 | /** |
507 | * tuner_s_type_addr - Sets the tuner type for a device |
508 | * |
509 | * @sd: subdev descriptor |
510 | * @tun_setup: type to be associated to a given tuner i2c address |
511 | * |
512 | * This function applies the tuner config to tuner specified |
513 | * by tun_setup structure. |
514 | * If tuner I2C address is UNSET, then it will only set the device |
515 | * if the tuner supports the mode specified in the call. |
516 | * If the address is specified, the change will be applied only if |
517 | * tuner I2C address matches. |
518 | * The call can change the tuner number and the tuner mode. |
519 | */ |
520 | static int tuner_s_type_addr(struct v4l2_subdev *sd, |
521 | struct tuner_setup *tun_setup) |
522 | { |
523 | struct tuner *t = to_tuner(sd); |
524 | struct i2c_client *c = v4l2_get_subdevdata(sd); |
525 | |
526 | dprintk("Calling set_type_addr for type=%d, addr=0x%02x, mode=0x%02x, config=%p\n" , |
527 | tun_setup->type, |
528 | tun_setup->addr, |
529 | tun_setup->mode_mask, |
530 | tun_setup->config); |
531 | |
532 | if ((t->type == UNSET && ((tun_setup->addr == ADDR_UNSET) && |
533 | (t->mode_mask & tun_setup->mode_mask))) || |
534 | (tun_setup->addr == c->addr)) { |
535 | set_type(c, type: tun_setup->type, new_mode_mask: tun_setup->mode_mask, |
536 | new_config: tun_setup->config, tuner_callback: tun_setup->tuner_callback); |
537 | } else |
538 | dprintk("set addr discarded for type %i, mask %x. Asked to change tuner at addr 0x%02x, with mask %x\n" , |
539 | t->type, t->mode_mask, |
540 | tun_setup->addr, tun_setup->mode_mask); |
541 | |
542 | return 0; |
543 | } |
544 | |
545 | /** |
546 | * tuner_s_config - Sets tuner configuration |
547 | * |
548 | * @sd: subdev descriptor |
549 | * @cfg: tuner configuration |
550 | * |
551 | * Calls tuner set_config() private function to set some tuner-internal |
552 | * parameters |
553 | */ |
554 | static int tuner_s_config(struct v4l2_subdev *sd, |
555 | const struct v4l2_priv_tun_config *cfg) |
556 | { |
557 | struct tuner *t = to_tuner(sd); |
558 | struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops; |
559 | |
560 | if (t->type != cfg->tuner) |
561 | return 0; |
562 | |
563 | if (analog_ops->set_config) { |
564 | analog_ops->set_config(&t->fe, cfg->priv); |
565 | return 0; |
566 | } |
567 | |
568 | dprintk("Tuner frontend module has no way to set config\n" ); |
569 | return 0; |
570 | } |
571 | |
572 | /** |
573 | * tuner_lookup - Seek for tuner adapters |
574 | * |
575 | * @adap: i2c_adapter struct |
576 | * @radio: pointer to be filled if the adapter is radio |
577 | * @tv: pointer to be filled if the adapter is TV |
578 | * |
579 | * Search for existing radio and/or TV tuners on the given I2C adapter, |
580 | * discarding demod-only adapters (tda9887). |
581 | * |
582 | * Note that when this function is called from tuner_probe you can be |
583 | * certain no other devices will be added/deleted at the same time, I2C |
584 | * core protects against that. |
585 | */ |
586 | static void tuner_lookup(struct i2c_adapter *adap, |
587 | struct tuner **radio, struct tuner **tv) |
588 | { |
589 | struct tuner *pos; |
590 | |
591 | *radio = NULL; |
592 | *tv = NULL; |
593 | |
594 | list_for_each_entry(pos, &tuner_list, list) { |
595 | int mode_mask; |
596 | |
597 | if (pos->i2c->adapter != adap || |
598 | strcmp(pos->i2c->dev.driver->name, "tuner" )) |
599 | continue; |
600 | |
601 | mode_mask = pos->mode_mask; |
602 | if (*radio == NULL && mode_mask == T_RADIO) |
603 | *radio = pos; |
604 | /* Note: currently TDA9887 is the only demod-only |
605 | device. If other devices appear then we need to |
606 | make this test more general. */ |
607 | else if (*tv == NULL && pos->type != TUNER_TDA9887 && |
608 | (pos->mode_mask & T_ANALOG_TV)) |
609 | *tv = pos; |
610 | } |
611 | } |
612 | |
613 | /** |
614 | *tuner_probe - Probes the existing tuners on an I2C bus |
615 | * |
616 | * @client: i2c_client descriptor |
617 | * |
618 | * This routine probes for tuners at the expected I2C addresses. On most |
619 | * cases, if a device answers to a given I2C address, it assumes that the |
620 | * device is a tuner. On a few cases, however, an additional logic is needed |
621 | * to double check if the device is really a tuner, or to identify the tuner |
622 | * type, like on tea5767/5761 devices. |
623 | * |
624 | * During client attach, set_type is called by adapter's attach_inform callback. |
625 | * set_type must then be completed by tuner_probe. |
626 | */ |
627 | static int tuner_probe(struct i2c_client *client) |
628 | { |
629 | struct tuner *t; |
630 | struct tuner *radio; |
631 | struct tuner *tv; |
632 | #ifdef CONFIG_MEDIA_CONTROLLER |
633 | int ret; |
634 | #endif |
635 | |
636 | t = kzalloc(size: sizeof(struct tuner), GFP_KERNEL); |
637 | if (NULL == t) |
638 | return -ENOMEM; |
639 | v4l2_i2c_subdev_init(sd: &t->sd, client, ops: &tuner_ops); |
640 | t->i2c = client; |
641 | t->name = "(tuner unset)" ; |
642 | t->type = UNSET; |
643 | t->audmode = V4L2_TUNER_MODE_STEREO; |
644 | t->standby = true; |
645 | t->radio_freq = 87.5 * 16000; /* Initial freq range */ |
646 | t->tv_freq = 400 * 16; /* Sets freq to VHF High - needed for some PLL's to properly start */ |
647 | |
648 | if (show_i2c) { |
649 | unsigned char buffer[16]; |
650 | int rc; |
651 | |
652 | memset(buffer, 0, sizeof(buffer)); |
653 | rc = i2c_master_recv(client, buf: buffer, count: sizeof(buffer)); |
654 | if (rc >= 0) |
655 | pr_info("I2C RECV = %*ph\n" , rc, buffer); |
656 | } |
657 | |
658 | /* autodetection code based on the i2c addr */ |
659 | if (!no_autodetect) { |
660 | switch (client->addr) { |
661 | case 0x10: |
662 | if (tuner_symbol_probe(tea5761_autodetection, |
663 | t->i2c->adapter, |
664 | t->i2c->addr) >= 0) { |
665 | t->type = TUNER_TEA5761; |
666 | t->mode_mask = T_RADIO; |
667 | tuner_lookup(adap: t->i2c->adapter, radio: &radio, tv: &tv); |
668 | if (tv) |
669 | tv->mode_mask &= ~T_RADIO; |
670 | |
671 | goto register_client; |
672 | } |
673 | kfree(objp: t); |
674 | return -ENODEV; |
675 | case 0x42: |
676 | case 0x43: |
677 | case 0x4a: |
678 | case 0x4b: |
679 | /* If chip is not tda8290, don't register. |
680 | since it can be tda9887*/ |
681 | if (tuner_symbol_probe(tda829x_probe, t->i2c->adapter, |
682 | t->i2c->addr) >= 0) { |
683 | dprintk("tda829x detected\n" ); |
684 | } else { |
685 | /* Default is being tda9887 */ |
686 | t->type = TUNER_TDA9887; |
687 | t->mode_mask = T_RADIO | T_ANALOG_TV; |
688 | goto register_client; |
689 | } |
690 | break; |
691 | case 0x60: |
692 | if (tuner_symbol_probe(tea5767_autodetection, |
693 | t->i2c->adapter, t->i2c->addr) |
694 | >= 0) { |
695 | t->type = TUNER_TEA5767; |
696 | t->mode_mask = T_RADIO; |
697 | /* Sets freq to FM range */ |
698 | tuner_lookup(adap: t->i2c->adapter, radio: &radio, tv: &tv); |
699 | if (tv) |
700 | tv->mode_mask &= ~T_RADIO; |
701 | |
702 | goto register_client; |
703 | } |
704 | break; |
705 | } |
706 | } |
707 | |
708 | /* Initializes only the first TV tuner on this adapter. Why only the |
709 | first? Because there are some devices (notably the ones with TI |
710 | tuners) that have more than one i2c address for the *same* device. |
711 | Experience shows that, except for just one case, the first |
712 | address is the right one. The exception is a Russian tuner |
713 | (ACORP_Y878F). So, the desired behavior is just to enable the |
714 | first found TV tuner. */ |
715 | tuner_lookup(adap: t->i2c->adapter, radio: &radio, tv: &tv); |
716 | if (tv == NULL) { |
717 | t->mode_mask = T_ANALOG_TV; |
718 | if (radio == NULL) |
719 | t->mode_mask |= T_RADIO; |
720 | dprintk("Setting mode_mask to 0x%02x\n" , t->mode_mask); |
721 | } |
722 | |
723 | /* Should be just before return */ |
724 | register_client: |
725 | #if defined(CONFIG_MEDIA_CONTROLLER) |
726 | t->sd.entity.name = t->name; |
727 | /* |
728 | * Handle the special case where the tuner has actually |
729 | * two stages: the PLL to tune into a frequency and the |
730 | * IF-PLL demodulator (tda988x). |
731 | */ |
732 | if (t->type == TUNER_TDA9887) { |
733 | t->pad[IF_VID_DEC_PAD_IF_INPUT].flags = MEDIA_PAD_FL_SINK; |
734 | t->pad[IF_VID_DEC_PAD_IF_INPUT].sig_type = PAD_SIGNAL_ANALOG; |
735 | t->pad[IF_VID_DEC_PAD_OUT].flags = MEDIA_PAD_FL_SOURCE; |
736 | t->pad[IF_VID_DEC_PAD_OUT].sig_type = PAD_SIGNAL_ANALOG; |
737 | ret = media_entity_pads_init(entity: &t->sd.entity, |
738 | num_pads: IF_VID_DEC_PAD_NUM_PADS, |
739 | pads: &t->pad[0]); |
740 | t->sd.entity.function = MEDIA_ENT_F_IF_VID_DECODER; |
741 | } else { |
742 | t->pad[TUNER_PAD_RF_INPUT].flags = MEDIA_PAD_FL_SINK; |
743 | t->pad[TUNER_PAD_RF_INPUT].sig_type = PAD_SIGNAL_ANALOG; |
744 | t->pad[TUNER_PAD_OUTPUT].flags = MEDIA_PAD_FL_SOURCE; |
745 | t->pad[TUNER_PAD_OUTPUT].sig_type = PAD_SIGNAL_ANALOG; |
746 | t->pad[TUNER_PAD_AUD_OUT].flags = MEDIA_PAD_FL_SOURCE; |
747 | t->pad[TUNER_PAD_AUD_OUT].sig_type = PAD_SIGNAL_AUDIO; |
748 | ret = media_entity_pads_init(entity: &t->sd.entity, num_pads: TUNER_NUM_PADS, |
749 | pads: &t->pad[0]); |
750 | t->sd.entity.function = MEDIA_ENT_F_TUNER; |
751 | } |
752 | |
753 | if (ret < 0) { |
754 | pr_err("failed to initialize media entity!\n" ); |
755 | kfree(objp: t); |
756 | return ret; |
757 | } |
758 | #endif |
759 | /* Sets a default mode */ |
760 | if (t->mode_mask & T_ANALOG_TV) |
761 | t->mode = V4L2_TUNER_ANALOG_TV; |
762 | else |
763 | t->mode = V4L2_TUNER_RADIO; |
764 | set_type(c: client, type: t->type, new_mode_mask: t->mode_mask, new_config: t->config, tuner_callback: t->fe.callback); |
765 | list_add_tail(new: &t->list, head: &tuner_list); |
766 | |
767 | pr_info("Tuner %d found with type(s)%s%s.\n" , |
768 | t->type, |
769 | t->mode_mask & T_RADIO ? " Radio" : "" , |
770 | t->mode_mask & T_ANALOG_TV ? " TV" : "" ); |
771 | return 0; |
772 | } |
773 | |
774 | /** |
775 | * tuner_remove - detaches a tuner |
776 | * |
777 | * @client: i2c_client descriptor |
778 | */ |
779 | |
780 | static void tuner_remove(struct i2c_client *client) |
781 | { |
782 | struct tuner *t = to_tuner(sd: i2c_get_clientdata(client)); |
783 | |
784 | v4l2_device_unregister_subdev(sd: &t->sd); |
785 | tuner_detach(fe: &t->fe); |
786 | t->fe.analog_demod_priv = NULL; |
787 | |
788 | list_del(entry: &t->list); |
789 | kfree(objp: t); |
790 | } |
791 | |
792 | /* |
793 | * Functions to switch between Radio and TV |
794 | * |
795 | * A few cards have a separate I2C tuner for radio. Those routines |
796 | * take care of switching between TV/Radio mode, filtering only the |
797 | * commands that apply to the Radio or TV tuner. |
798 | */ |
799 | |
800 | /** |
801 | * check_mode - Verify if tuner supports the requested mode |
802 | * @t: a pointer to the module's internal struct_tuner |
803 | * @mode: mode of the tuner, as defined by &enum v4l2_tuner_type. |
804 | * |
805 | * This function checks if the tuner is capable of tuning analog TV, |
806 | * digital TV or radio, depending on what the caller wants. If the |
807 | * tuner can't support that mode, it returns -EINVAL. Otherwise, it |
808 | * returns 0. |
809 | * This function is needed for boards that have a separate tuner for |
810 | * radio (like devices with tea5767). |
811 | * |
812 | * NOTE: mt20xx uses V4L2_TUNER_DIGITAL_TV and calls set_tv_freq to |
813 | * select a TV frequency. So, t_mode = T_ANALOG_TV could actually |
814 | * be used to represent a Digital TV too. |
815 | */ |
816 | static inline int check_mode(struct tuner *t, enum v4l2_tuner_type mode) |
817 | { |
818 | int t_mode; |
819 | if (mode == V4L2_TUNER_RADIO) |
820 | t_mode = T_RADIO; |
821 | else |
822 | t_mode = T_ANALOG_TV; |
823 | |
824 | if ((t_mode & t->mode_mask) == 0) |
825 | return -EINVAL; |
826 | |
827 | return 0; |
828 | } |
829 | |
830 | /** |
831 | * set_mode - Switch tuner to other mode. |
832 | * @t: a pointer to the module's internal struct_tuner |
833 | * @mode: enum v4l2_type (radio or TV) |
834 | * |
835 | * If tuner doesn't support the needed mode (radio or TV), prints a |
836 | * debug message and returns -EINVAL, changing its state to standby. |
837 | * Otherwise, changes the mode and returns 0. |
838 | */ |
839 | static int set_mode(struct tuner *t, enum v4l2_tuner_type mode) |
840 | { |
841 | struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops; |
842 | |
843 | if (mode != t->mode) { |
844 | if (check_mode(t, mode) == -EINVAL) { |
845 | dprintk("Tuner doesn't support mode %d. Putting tuner to sleep\n" , |
846 | mode); |
847 | t->standby = true; |
848 | if (analog_ops->standby) |
849 | analog_ops->standby(&t->fe); |
850 | return -EINVAL; |
851 | } |
852 | t->mode = mode; |
853 | dprintk("Changing to mode %d\n" , mode); |
854 | } |
855 | return 0; |
856 | } |
857 | |
858 | /** |
859 | * set_freq - Set the tuner to the desired frequency. |
860 | * @t: a pointer to the module's internal struct_tuner |
861 | * @freq: frequency to set (0 means to use the current frequency) |
862 | */ |
863 | static void set_freq(struct tuner *t, unsigned int freq) |
864 | { |
865 | struct i2c_client *client = v4l2_get_subdevdata(sd: &t->sd); |
866 | |
867 | if (t->mode == V4L2_TUNER_RADIO) { |
868 | if (!freq) |
869 | freq = t->radio_freq; |
870 | set_radio_freq(c: client, freq); |
871 | } else { |
872 | if (!freq) |
873 | freq = t->tv_freq; |
874 | set_tv_freq(c: client, freq); |
875 | } |
876 | } |
877 | |
878 | /* |
879 | * Functions that are specific for TV mode |
880 | */ |
881 | |
882 | /** |
883 | * set_tv_freq - Set tuner frequency, freq in Units of 62.5 kHz = 1/16MHz |
884 | * |
885 | * @c: i2c_client descriptor |
886 | * @freq: frequency |
887 | */ |
888 | static void set_tv_freq(struct i2c_client *c, unsigned int freq) |
889 | { |
890 | struct tuner *t = to_tuner(sd: i2c_get_clientdata(client: c)); |
891 | struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops; |
892 | |
893 | struct analog_parameters params = { |
894 | .mode = t->mode, |
895 | .audmode = t->audmode, |
896 | .std = t->std |
897 | }; |
898 | |
899 | if (t->type == UNSET) { |
900 | pr_warn("tuner type not set\n" ); |
901 | return; |
902 | } |
903 | if (NULL == analog_ops->set_params) { |
904 | pr_warn("Tuner has no way to set tv freq\n" ); |
905 | return; |
906 | } |
907 | if (freq < tv_range[0] * 16 || freq > tv_range[1] * 16) { |
908 | dprintk("TV freq (%d.%02d) out of range (%d-%d)\n" , |
909 | freq / 16, freq % 16 * 100 / 16, tv_range[0], |
910 | tv_range[1]); |
911 | /* V4L2 spec: if the freq is not possible then the closest |
912 | possible value should be selected */ |
913 | if (freq < tv_range[0] * 16) |
914 | freq = tv_range[0] * 16; |
915 | else |
916 | freq = tv_range[1] * 16; |
917 | } |
918 | params.frequency = freq; |
919 | dprintk("tv freq set to %d.%02d\n" , |
920 | freq / 16, freq % 16 * 100 / 16); |
921 | t->tv_freq = freq; |
922 | t->standby = false; |
923 | |
924 | analog_ops->set_params(&t->fe, ¶ms); |
925 | } |
926 | |
927 | /** |
928 | * tuner_fixup_std - force a given video standard variant |
929 | * |
930 | * @t: tuner internal struct |
931 | * @std: TV standard |
932 | * |
933 | * A few devices or drivers have problem to detect some standard variations. |
934 | * On other operational systems, the drivers generally have a per-country |
935 | * code, and some logic to apply per-country hacks. V4L2 API doesn't provide |
936 | * such hacks. Instead, it relies on a proper video standard selection from |
937 | * the userspace application. However, as some apps are buggy, not allowing |
938 | * to distinguish all video standard variations, a modprobe parameter can |
939 | * be used to force a video standard match. |
940 | */ |
941 | static v4l2_std_id tuner_fixup_std(struct tuner *t, v4l2_std_id std) |
942 | { |
943 | if (pal[0] != '-' && (std & V4L2_STD_PAL) == V4L2_STD_PAL) { |
944 | switch (pal[0]) { |
945 | case '6': |
946 | return V4L2_STD_PAL_60; |
947 | case 'b': |
948 | case 'B': |
949 | case 'g': |
950 | case 'G': |
951 | return V4L2_STD_PAL_BG; |
952 | case 'i': |
953 | case 'I': |
954 | return V4L2_STD_PAL_I; |
955 | case 'd': |
956 | case 'D': |
957 | case 'k': |
958 | case 'K': |
959 | return V4L2_STD_PAL_DK; |
960 | case 'M': |
961 | case 'm': |
962 | return V4L2_STD_PAL_M; |
963 | case 'N': |
964 | case 'n': |
965 | if (pal[1] == 'c' || pal[1] == 'C') |
966 | return V4L2_STD_PAL_Nc; |
967 | return V4L2_STD_PAL_N; |
968 | default: |
969 | pr_warn("pal= argument not recognised\n" ); |
970 | break; |
971 | } |
972 | } |
973 | if (secam[0] != '-' && (std & V4L2_STD_SECAM) == V4L2_STD_SECAM) { |
974 | switch (secam[0]) { |
975 | case 'b': |
976 | case 'B': |
977 | case 'g': |
978 | case 'G': |
979 | case 'h': |
980 | case 'H': |
981 | return V4L2_STD_SECAM_B | |
982 | V4L2_STD_SECAM_G | |
983 | V4L2_STD_SECAM_H; |
984 | case 'd': |
985 | case 'D': |
986 | case 'k': |
987 | case 'K': |
988 | return V4L2_STD_SECAM_DK; |
989 | case 'l': |
990 | case 'L': |
991 | if ((secam[1] == 'C') || (secam[1] == 'c')) |
992 | return V4L2_STD_SECAM_LC; |
993 | return V4L2_STD_SECAM_L; |
994 | default: |
995 | pr_warn("secam= argument not recognised\n" ); |
996 | break; |
997 | } |
998 | } |
999 | |
1000 | if (ntsc[0] != '-' && (std & V4L2_STD_NTSC) == V4L2_STD_NTSC) { |
1001 | switch (ntsc[0]) { |
1002 | case 'm': |
1003 | case 'M': |
1004 | return V4L2_STD_NTSC_M; |
1005 | case 'j': |
1006 | case 'J': |
1007 | return V4L2_STD_NTSC_M_JP; |
1008 | case 'k': |
1009 | case 'K': |
1010 | return V4L2_STD_NTSC_M_KR; |
1011 | default: |
1012 | pr_info("ntsc= argument not recognised\n" ); |
1013 | break; |
1014 | } |
1015 | } |
1016 | return std; |
1017 | } |
1018 | |
1019 | /* |
1020 | * Functions that are specific for Radio mode |
1021 | */ |
1022 | |
1023 | /** |
1024 | * set_radio_freq - Set tuner frequency, freq in Units of 62.5 Hz = 1/16kHz |
1025 | * |
1026 | * @c: i2c_client descriptor |
1027 | * @freq: frequency |
1028 | */ |
1029 | static void set_radio_freq(struct i2c_client *c, unsigned int freq) |
1030 | { |
1031 | struct tuner *t = to_tuner(sd: i2c_get_clientdata(client: c)); |
1032 | struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops; |
1033 | |
1034 | struct analog_parameters params = { |
1035 | .mode = t->mode, |
1036 | .audmode = t->audmode, |
1037 | .std = t->std |
1038 | }; |
1039 | |
1040 | if (t->type == UNSET) { |
1041 | pr_warn("tuner type not set\n" ); |
1042 | return; |
1043 | } |
1044 | if (NULL == analog_ops->set_params) { |
1045 | pr_warn("tuner has no way to set radio frequency\n" ); |
1046 | return; |
1047 | } |
1048 | if (freq < radio_range[0] * 16000 || freq > radio_range[1] * 16000) { |
1049 | dprintk("radio freq (%d.%02d) out of range (%d-%d)\n" , |
1050 | freq / 16000, freq % 16000 * 100 / 16000, |
1051 | radio_range[0], radio_range[1]); |
1052 | /* V4L2 spec: if the freq is not possible then the closest |
1053 | possible value should be selected */ |
1054 | if (freq < radio_range[0] * 16000) |
1055 | freq = radio_range[0] * 16000; |
1056 | else |
1057 | freq = radio_range[1] * 16000; |
1058 | } |
1059 | params.frequency = freq; |
1060 | dprintk("radio freq set to %d.%02d\n" , |
1061 | freq / 16000, freq % 16000 * 100 / 16000); |
1062 | t->radio_freq = freq; |
1063 | t->standby = false; |
1064 | |
1065 | analog_ops->set_params(&t->fe, ¶ms); |
1066 | /* |
1067 | * The tuner driver might decide to change the audmode if it only |
1068 | * supports stereo, so update t->audmode. |
1069 | */ |
1070 | t->audmode = params.audmode; |
1071 | } |
1072 | |
1073 | /* |
1074 | * Debug function for reporting tuner status to userspace |
1075 | */ |
1076 | |
1077 | /** |
1078 | * tuner_status - Dumps the current tuner status at dmesg |
1079 | * @fe: pointer to struct dvb_frontend |
1080 | * |
1081 | * This callback is used only for driver debug purposes, answering to |
1082 | * VIDIOC_LOG_STATUS. No changes should happen on this call. |
1083 | */ |
1084 | static void tuner_status(struct dvb_frontend *fe) |
1085 | { |
1086 | struct tuner *t = fe->analog_demod_priv; |
1087 | unsigned long freq, freq_fraction; |
1088 | struct dvb_tuner_ops *fe_tuner_ops = &fe->ops.tuner_ops; |
1089 | struct analog_demod_ops *analog_ops = &fe->ops.analog_ops; |
1090 | const char *p; |
1091 | |
1092 | switch (t->mode) { |
1093 | case V4L2_TUNER_RADIO: |
1094 | p = "radio" ; |
1095 | break; |
1096 | case V4L2_TUNER_DIGITAL_TV: /* Used by mt20xx */ |
1097 | p = "digital TV" ; |
1098 | break; |
1099 | case V4L2_TUNER_ANALOG_TV: |
1100 | default: |
1101 | p = "analog TV" ; |
1102 | break; |
1103 | } |
1104 | if (t->mode == V4L2_TUNER_RADIO) { |
1105 | freq = t->radio_freq / 16000; |
1106 | freq_fraction = (t->radio_freq % 16000) * 100 / 16000; |
1107 | } else { |
1108 | freq = t->tv_freq / 16; |
1109 | freq_fraction = (t->tv_freq % 16) * 100 / 16; |
1110 | } |
1111 | pr_info("Tuner mode: %s%s\n" , p, |
1112 | t->standby ? " on standby mode" : "" ); |
1113 | pr_info("Frequency: %lu.%02lu MHz\n" , freq, freq_fraction); |
1114 | pr_info("Standard: 0x%08lx\n" , (unsigned long)t->std); |
1115 | if (t->mode != V4L2_TUNER_RADIO) |
1116 | return; |
1117 | if (fe_tuner_ops->get_status) { |
1118 | u32 tuner_status = 0; |
1119 | |
1120 | fe_tuner_ops->get_status(&t->fe, &tuner_status); |
1121 | if (tuner_status & TUNER_STATUS_LOCKED) |
1122 | pr_info("Tuner is locked.\n" ); |
1123 | if (tuner_status & TUNER_STATUS_STEREO) |
1124 | pr_info("Stereo: yes\n" ); |
1125 | } |
1126 | if (analog_ops->has_signal) { |
1127 | u16 signal; |
1128 | |
1129 | if (!analog_ops->has_signal(fe, &signal)) |
1130 | pr_info("Signal strength: %hu\n" , signal); |
1131 | } |
1132 | } |
1133 | |
1134 | /* |
1135 | * Function to splicitly change mode to radio. Probably not needed anymore |
1136 | */ |
1137 | |
1138 | static int tuner_s_radio(struct v4l2_subdev *sd) |
1139 | { |
1140 | struct tuner *t = to_tuner(sd); |
1141 | |
1142 | if (set_mode(t, mode: V4L2_TUNER_RADIO) == 0) |
1143 | set_freq(t, freq: 0); |
1144 | return 0; |
1145 | } |
1146 | |
1147 | /* |
1148 | * Tuner callbacks to handle userspace ioctl's |
1149 | */ |
1150 | |
1151 | /** |
1152 | * tuner_standby - places the tuner in standby mode |
1153 | * @sd: pointer to struct v4l2_subdev |
1154 | */ |
1155 | static int tuner_standby(struct v4l2_subdev *sd) |
1156 | { |
1157 | struct tuner *t = to_tuner(sd); |
1158 | struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops; |
1159 | |
1160 | dprintk("Putting tuner to sleep\n" ); |
1161 | t->standby = true; |
1162 | if (analog_ops->standby) |
1163 | analog_ops->standby(&t->fe); |
1164 | return 0; |
1165 | } |
1166 | |
1167 | static int tuner_s_std(struct v4l2_subdev *sd, v4l2_std_id std) |
1168 | { |
1169 | struct tuner *t = to_tuner(sd); |
1170 | |
1171 | if (set_mode(t, mode: V4L2_TUNER_ANALOG_TV)) |
1172 | return 0; |
1173 | |
1174 | t->std = tuner_fixup_std(t, std); |
1175 | if (t->std != std) |
1176 | dprintk("Fixup standard %llx to %llx\n" , std, t->std); |
1177 | set_freq(t, freq: 0); |
1178 | return 0; |
1179 | } |
1180 | |
1181 | static int tuner_s_frequency(struct v4l2_subdev *sd, const struct v4l2_frequency *f) |
1182 | { |
1183 | struct tuner *t = to_tuner(sd); |
1184 | |
1185 | if (set_mode(t, mode: f->type) == 0) |
1186 | set_freq(t, freq: f->frequency); |
1187 | return 0; |
1188 | } |
1189 | |
1190 | /** |
1191 | * tuner_g_frequency - Get the tuned frequency for the tuner |
1192 | * @sd: pointer to struct v4l2_subdev |
1193 | * @f: pointer to struct v4l2_frequency |
1194 | * |
1195 | * At return, the structure f will be filled with tuner frequency |
1196 | * if the tuner matches the f->type. |
1197 | * Note: f->type should be initialized before calling it. |
1198 | * This is done by either video_ioctl2 or by the bridge driver. |
1199 | */ |
1200 | static int tuner_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f) |
1201 | { |
1202 | struct tuner *t = to_tuner(sd); |
1203 | struct dvb_tuner_ops *fe_tuner_ops = &t->fe.ops.tuner_ops; |
1204 | |
1205 | if (check_mode(t, mode: f->type) == -EINVAL) |
1206 | return 0; |
1207 | if (f->type == t->mode && fe_tuner_ops->get_frequency && !t->standby) { |
1208 | u32 abs_freq; |
1209 | |
1210 | fe_tuner_ops->get_frequency(&t->fe, &abs_freq); |
1211 | f->frequency = (V4L2_TUNER_RADIO == t->mode) ? |
1212 | DIV_ROUND_CLOSEST(abs_freq * 2, 125) : |
1213 | DIV_ROUND_CLOSEST(abs_freq, 62500); |
1214 | } else { |
1215 | f->frequency = (V4L2_TUNER_RADIO == f->type) ? |
1216 | t->radio_freq : t->tv_freq; |
1217 | } |
1218 | return 0; |
1219 | } |
1220 | |
1221 | /** |
1222 | * tuner_g_tuner - Fill in tuner information |
1223 | * @sd: pointer to struct v4l2_subdev |
1224 | * @vt: pointer to struct v4l2_tuner |
1225 | * |
1226 | * At return, the structure vt will be filled with tuner information |
1227 | * if the tuner matches vt->type. |
1228 | * Note: vt->type should be initialized before calling it. |
1229 | * This is done by either video_ioctl2 or by the bridge driver. |
1230 | */ |
1231 | static int tuner_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt) |
1232 | { |
1233 | struct tuner *t = to_tuner(sd); |
1234 | struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops; |
1235 | struct dvb_tuner_ops *fe_tuner_ops = &t->fe.ops.tuner_ops; |
1236 | |
1237 | if (check_mode(t, mode: vt->type) == -EINVAL) |
1238 | return 0; |
1239 | if (vt->type == t->mode && analog_ops->get_afc) |
1240 | analog_ops->get_afc(&t->fe, &vt->afc); |
1241 | if (vt->type == t->mode && analog_ops->has_signal) { |
1242 | u16 signal = (u16)vt->signal; |
1243 | |
1244 | if (!analog_ops->has_signal(&t->fe, &signal)) |
1245 | vt->signal = signal; |
1246 | } |
1247 | if (vt->type != V4L2_TUNER_RADIO) { |
1248 | vt->capability |= V4L2_TUNER_CAP_NORM; |
1249 | vt->rangelow = tv_range[0] * 16; |
1250 | vt->rangehigh = tv_range[1] * 16; |
1251 | return 0; |
1252 | } |
1253 | |
1254 | /* radio mode */ |
1255 | if (vt->type == t->mode) { |
1256 | vt->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; |
1257 | if (fe_tuner_ops->get_status) { |
1258 | u32 tuner_status = 0; |
1259 | |
1260 | fe_tuner_ops->get_status(&t->fe, &tuner_status); |
1261 | vt->rxsubchans = |
1262 | (tuner_status & TUNER_STATUS_STEREO) ? |
1263 | V4L2_TUNER_SUB_STEREO : |
1264 | V4L2_TUNER_SUB_MONO; |
1265 | } |
1266 | vt->audmode = t->audmode; |
1267 | } |
1268 | vt->capability |= V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO; |
1269 | vt->rangelow = radio_range[0] * 16000; |
1270 | vt->rangehigh = radio_range[1] * 16000; |
1271 | |
1272 | return 0; |
1273 | } |
1274 | |
1275 | /** |
1276 | * tuner_s_tuner - Set the tuner's audio mode |
1277 | * @sd: pointer to struct v4l2_subdev |
1278 | * @vt: pointer to struct v4l2_tuner |
1279 | * |
1280 | * Sets the audio mode if the tuner matches vt->type. |
1281 | * Note: vt->type should be initialized before calling it. |
1282 | * This is done by either video_ioctl2 or by the bridge driver. |
1283 | */ |
1284 | static int tuner_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *vt) |
1285 | { |
1286 | struct tuner *t = to_tuner(sd); |
1287 | |
1288 | if (set_mode(t, mode: vt->type)) |
1289 | return 0; |
1290 | |
1291 | if (t->mode == V4L2_TUNER_RADIO) { |
1292 | t->audmode = vt->audmode; |
1293 | /* |
1294 | * For radio audmode can only be mono or stereo. Map any |
1295 | * other values to stereo. The actual tuner driver that is |
1296 | * called in set_radio_freq can decide to limit the audmode to |
1297 | * mono if only mono is supported. |
1298 | */ |
1299 | if (t->audmode != V4L2_TUNER_MODE_MONO && |
1300 | t->audmode != V4L2_TUNER_MODE_STEREO) |
1301 | t->audmode = V4L2_TUNER_MODE_STEREO; |
1302 | } |
1303 | set_freq(t, freq: 0); |
1304 | |
1305 | return 0; |
1306 | } |
1307 | |
1308 | static int tuner_log_status(struct v4l2_subdev *sd) |
1309 | { |
1310 | struct tuner *t = to_tuner(sd); |
1311 | struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops; |
1312 | |
1313 | if (analog_ops->tuner_status) |
1314 | analog_ops->tuner_status(&t->fe); |
1315 | return 0; |
1316 | } |
1317 | |
1318 | #ifdef CONFIG_PM_SLEEP |
1319 | static int tuner_suspend(struct device *dev) |
1320 | { |
1321 | struct i2c_client *c = to_i2c_client(dev); |
1322 | struct tuner *t = to_tuner(sd: i2c_get_clientdata(client: c)); |
1323 | struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops; |
1324 | |
1325 | dprintk("suspend\n" ); |
1326 | |
1327 | if (t->fe.ops.tuner_ops.suspend) |
1328 | t->fe.ops.tuner_ops.suspend(&t->fe); |
1329 | else if (!t->standby && analog_ops->standby) |
1330 | analog_ops->standby(&t->fe); |
1331 | |
1332 | return 0; |
1333 | } |
1334 | |
1335 | static int tuner_resume(struct device *dev) |
1336 | { |
1337 | struct i2c_client *c = to_i2c_client(dev); |
1338 | struct tuner *t = to_tuner(sd: i2c_get_clientdata(client: c)); |
1339 | |
1340 | dprintk("resume\n" ); |
1341 | |
1342 | if (t->fe.ops.tuner_ops.resume) |
1343 | t->fe.ops.tuner_ops.resume(&t->fe); |
1344 | else if (!t->standby) |
1345 | if (set_mode(t, mode: t->mode) == 0) |
1346 | set_freq(t, freq: 0); |
1347 | |
1348 | return 0; |
1349 | } |
1350 | #endif |
1351 | |
1352 | static int tuner_command(struct i2c_client *client, unsigned cmd, void *arg) |
1353 | { |
1354 | struct v4l2_subdev *sd = i2c_get_clientdata(client); |
1355 | |
1356 | /* TUNER_SET_CONFIG is still called by tuner-simple.c, so we have |
1357 | to handle it here. |
1358 | There must be a better way of doing this... */ |
1359 | switch (cmd) { |
1360 | case TUNER_SET_CONFIG: |
1361 | return tuner_s_config(sd, cfg: arg); |
1362 | } |
1363 | return -ENOIOCTLCMD; |
1364 | } |
1365 | |
1366 | /* |
1367 | * Callback structs |
1368 | */ |
1369 | |
1370 | static const struct v4l2_subdev_core_ops tuner_core_ops = { |
1371 | .log_status = tuner_log_status, |
1372 | }; |
1373 | |
1374 | static const struct v4l2_subdev_tuner_ops tuner_tuner_ops = { |
1375 | .standby = tuner_standby, |
1376 | .s_radio = tuner_s_radio, |
1377 | .g_tuner = tuner_g_tuner, |
1378 | .s_tuner = tuner_s_tuner, |
1379 | .s_frequency = tuner_s_frequency, |
1380 | .g_frequency = tuner_g_frequency, |
1381 | .s_type_addr = tuner_s_type_addr, |
1382 | .s_config = tuner_s_config, |
1383 | }; |
1384 | |
1385 | static const struct v4l2_subdev_video_ops tuner_video_ops = { |
1386 | .s_std = tuner_s_std, |
1387 | }; |
1388 | |
1389 | static const struct v4l2_subdev_ops tuner_ops = { |
1390 | .core = &tuner_core_ops, |
1391 | .tuner = &tuner_tuner_ops, |
1392 | .video = &tuner_video_ops, |
1393 | }; |
1394 | |
1395 | /* |
1396 | * I2C structs and module init functions |
1397 | */ |
1398 | |
1399 | static const struct dev_pm_ops tuner_pm_ops = { |
1400 | SET_SYSTEM_SLEEP_PM_OPS(tuner_suspend, tuner_resume) |
1401 | }; |
1402 | |
1403 | static const struct i2c_device_id tuner_id[] = { |
1404 | { "tuner" , }, /* autodetect */ |
1405 | { } |
1406 | }; |
1407 | MODULE_DEVICE_TABLE(i2c, tuner_id); |
1408 | |
1409 | static struct i2c_driver tuner_driver = { |
1410 | .driver = { |
1411 | .name = "tuner" , |
1412 | .pm = &tuner_pm_ops, |
1413 | }, |
1414 | .probe = tuner_probe, |
1415 | .remove = tuner_remove, |
1416 | .command = tuner_command, |
1417 | .id_table = tuner_id, |
1418 | }; |
1419 | |
1420 | module_i2c_driver(tuner_driver); |
1421 | |
1422 | MODULE_DESCRIPTION("device driver for various TV and TV+FM radio tuners" ); |
1423 | MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer" ); |
1424 | MODULE_LICENSE("GPL" ); |
1425 | |