2 * $Id: tuner-core.c,v 1.58 2005/07/14 03:06:43 mchehab Exp $
4 * i2c tv tuner chip device driver
5 * core core, i.e. kernel interfaces, registering and so on
8 #include <linux/module.h>
9 #include <linux/moduleparam.h>
10 #include <linux/kernel.h>
11 #include <linux/sched.h>
12 #include <linux/string.h>
13 #include <linux/timer.h>
14 #include <linux/delay.h>
15 #include <linux/errno.h>
16 #include <linux/slab.h>
17 #include <linux/poll.h>
18 #include <linux/i2c.h>
19 #include <linux/types.h>
20 #include <linux/videodev.h>
21 #include <linux/init.h>
23 #include <media/tuner.h>
24 #include <media/audiochip.h>
28 /* standard i2c insmod options */
29 static unsigned short normal_i2c[] = {
31 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
32 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
38 /* insmod options used at init time => read/only */
39 static unsigned int addr = 0;
40 module_param(addr, int, 0444);
42 static unsigned int no_autodetect = 0;
43 module_param(no_autodetect, int, 0444);
45 /* insmod options used at runtime => read/write */
46 unsigned int tuner_debug = 0;
47 module_param(tuner_debug, int, 0644);
49 static unsigned int tv_range[2] = { 44, 958 };
50 static unsigned int radio_range[2] = { 65, 108 };
52 module_param_array(tv_range, int, NULL, 0644);
53 module_param_array(radio_range, int, NULL, 0644);
55 MODULE_DESCRIPTION("device driver for various TV and TV+FM radio tuners");
56 MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer");
57 MODULE_LICENSE("GPL");
59 static struct i2c_driver driver;
60 static struct i2c_client client_template;
62 /* ---------------------------------------------------------------------- */
64 /* Set tuner frequency, freq in Units of 62.5kHz = 1/16MHz */
65 static void set_tv_freq(struct i2c_client *c, unsigned int freq)
67 struct tuner *t = i2c_get_clientdata(c);
69 if (t->type == UNSET) {
70 tuner_warn ("tuner type not set\n");
73 if (NULL == t->tv_freq) {
74 tuner_warn ("Tuner has no way to set tv freq\n");
77 if (freq < tv_range[0] * 16 || freq > tv_range[1] * 16) {
78 tuner_dbg ("TV freq (%d.%02d) out of range (%d-%d)\n",
79 freq / 16, freq % 16 * 100 / 16, tv_range[0],
85 static void set_radio_freq(struct i2c_client *c, unsigned int freq)
87 struct tuner *t = i2c_get_clientdata(c);
89 if (t->type == UNSET) {
90 tuner_warn ("tuner type not set\n");
93 if (NULL == t->radio_freq) {
94 tuner_warn ("tuner has no way to set radio frequency\n");
97 if (freq <= radio_range[0] * 16000 || freq >= radio_range[1] * 16000) {
98 tuner_dbg ("radio freq (%d.%02d) out of range (%d-%d)\n",
99 freq / 16000, freq % 16000 * 100 / 16000,
100 radio_range[0], radio_range[1]);
103 t->radio_freq(c, freq);
107 static void set_freq(struct i2c_client *c, unsigned long freq)
109 struct tuner *t = i2c_get_clientdata(c);
112 case V4L2_TUNER_RADIO:
113 tuner_dbg("radio freq set to %lu.%02lu\n",
114 freq / 16000, freq % 16000 * 100 / 16000);
115 set_radio_freq(c, freq);
117 case V4L2_TUNER_ANALOG_TV:
118 case V4L2_TUNER_DIGITAL_TV:
119 tuner_dbg("tv freq set to %lu.%02lu\n",
120 freq / 16, freq % 16 * 100 / 16);
121 set_tv_freq(c, freq);
127 static void set_type(struct i2c_client *c, unsigned int type,
128 unsigned int new_mode_mask)
130 struct tuner *t = i2c_get_clientdata(c);
131 unsigned char buffer[4];
133 if (type == UNSET || type == TUNER_ABSENT) {
134 tuner_dbg ("tuner 0x%02x: Tuner type absent\n",c->addr);
138 if (type >= tuner_count) {
139 tuner_warn ("tuner 0x%02x: Tuner count greater than %d\n",c->addr,tuner_count);
143 /* This code detects calls by card attach_inform */
144 if (NULL == t->i2c.dev.driver) {
145 tuner_dbg ("tuner 0x%02x: called during i2c_client register by adapter's attach_inform\n", c->addr);
157 case TUNER_PHILIPS_TDA8290:
161 if (tea5767_tuner_init(c) == EINVAL) {
162 t->type = TUNER_ABSENT;
163 t->mode_mask = T_UNINITIALIZED;
166 t->mode_mask = T_RADIO;
168 case TUNER_PHILIPS_FMD1216ME_MK3:
173 i2c_master_send(c, buffer, 4);
177 i2c_master_send(c, buffer, 4);
178 default_tuner_init(c);
181 default_tuner_init(c);
185 if (t->mode_mask == T_UNINITIALIZED)
186 t->mode_mask = new_mode_mask;
188 set_freq(c, t->freq);
189 tuner_dbg("%s %s I2C addr 0x%02x with type %d used for 0x%02x\n",
190 c->adapter->name, c->driver->name, c->addr << 1, type,
195 * This function apply tuner config to tuner specified
196 * by tun_setup structure. I addr is unset, then admin status
197 * and tun addr status is more precise then current status,
198 * it's applied. Otherwise status and type are applied only to
199 * tuner with exactly the same addr.
202 static void set_addr(struct i2c_client *c, struct tuner_setup *tun_setup)
204 struct tuner *t = i2c_get_clientdata(c);
206 if (tun_setup->addr == ADDR_UNSET) {
207 if (t->mode_mask & tun_setup->mode_mask)
208 set_type(c, tun_setup->type, tun_setup->mode_mask);
209 } else if (tun_setup->addr == c->addr) {
210 set_type(c, tun_setup->type, tun_setup->mode_mask);
214 static inline int check_mode(struct tuner *t, char *cmd)
216 if (1 << t->mode & t->mode_mask) {
218 case V4L2_TUNER_RADIO:
219 tuner_dbg("Cmd %s accepted for radio\n", cmd);
221 case V4L2_TUNER_ANALOG_TV:
222 tuner_dbg("Cmd %s accepted for analog TV\n", cmd);
224 case V4L2_TUNER_DIGITAL_TV:
225 tuner_dbg("Cmd %s accepted for digital TV\n", cmd);
233 static char pal[] = "-";
234 module_param_string(pal, pal, sizeof(pal), 0644);
235 static char secam[] = "-";
236 module_param_string(secam, secam, sizeof(secam), 0644);
238 /* get more precise norm info from insmod option */
239 static int tuner_fixup_std(struct tuner *t)
241 if ((t->std & V4L2_STD_PAL) == V4L2_STD_PAL) {
247 tuner_dbg ("insmod fixup: PAL => PAL-BG\n");
248 t->std = V4L2_STD_PAL_BG;
252 tuner_dbg ("insmod fixup: PAL => PAL-I\n");
253 t->std = V4L2_STD_PAL_I;
259 tuner_dbg ("insmod fixup: PAL => PAL-DK\n");
260 t->std = V4L2_STD_PAL_DK;
264 tuner_dbg ("insmod fixup: PAL => PAL-M\n");
265 t->std = V4L2_STD_PAL_M;
269 tuner_dbg ("insmod fixup: PAL => PAL-N\n");
270 t->std = V4L2_STD_PAL_N;
274 if ((t->std & V4L2_STD_SECAM) == V4L2_STD_SECAM) {
280 tuner_dbg ("insmod fixup: SECAM => SECAM-DK\n");
281 t->std = V4L2_STD_SECAM_DK;
285 tuner_dbg ("insmod fixup: SECAM => SECAM-L\n");
286 t->std = V4L2_STD_SECAM_L;
294 /* ---------------------------------------------------------------------- */
296 /* static var Used only in tuner_attach and tuner_probe */
297 static unsigned default_mode_mask;
299 /* During client attach, set_type is called by adapter's attach_inform callback.
300 set_type must then be completed by tuner_attach.
302 static int tuner_attach(struct i2c_adapter *adap, int addr, int kind)
306 client_template.adapter = adap;
307 client_template.addr = addr;
309 t = kmalloc(sizeof(struct tuner), GFP_KERNEL);
312 memset(t, 0, sizeof(struct tuner));
313 memcpy(&t->i2c, &client_template, sizeof(struct i2c_client));
314 i2c_set_clientdata(&t->i2c, t);
316 t->radio_if2 = 10700 * 1000; /* 10.7MHz - FM radio */
317 t->audmode = V4L2_TUNER_MODE_STEREO;
318 t->mode_mask = T_UNINITIALIZED;
321 tuner_info("chip found @ 0x%x (%s)\n", addr << 1, adap->name);
323 /* TEA5767 autodetection code - only for addr = 0xc0 */
324 if (!no_autodetect) {
326 if (tea5767_autodetection(&t->i2c) != EINVAL) {
327 t->type = TUNER_TEA5767;
328 t->mode_mask = T_RADIO;
330 t->freq = 87.5 * 16; /* Sets freq to FM range */
331 default_mode_mask &= ~T_RADIO;
333 i2c_attach_client (&t->i2c);
334 set_type(&t->i2c,t->type, t->mode_mask);
340 /* Initializes only the first adapter found */
341 if (default_mode_mask != T_UNINITIALIZED) {
342 tuner_dbg ("Setting mode_mask to 0x%02x\n", default_mode_mask);
343 t->mode_mask = default_mode_mask;
344 t->freq = 400 * 16; /* Sets freq to VHF High */
345 default_mode_mask = T_UNINITIALIZED;
348 /* Should be just before return */
349 i2c_attach_client (&t->i2c);
350 set_type (&t->i2c,t->type, t->mode_mask);
354 static int tuner_probe(struct i2c_adapter *adap)
357 normal_i2c[0] = addr;
358 normal_i2c[1] = I2C_CLIENT_END;
361 default_mode_mask = T_RADIO | T_ANALOG_TV | T_DIGITAL_TV;
363 if (adap->class & I2C_CLASS_TV_ANALOG)
364 return i2c_probe(adap, &addr_data, tuner_attach);
368 static int tuner_detach(struct i2c_client *client)
370 struct tuner *t = i2c_get_clientdata(client);
373 err = i2c_detach_client(&t->i2c);
376 ("Client deregistration failed, client not detached.\n");
385 * Switch tuner to other mode. If tuner support both tv and radio,
386 * set another frequency to some value (This is needed for some pal
387 * tuners to avoid locking). Otherwise, just put second tuner in
391 static inline int set_mode(struct i2c_client *client, struct tuner *t, int mode, char *cmd)
393 if (mode != t->mode) {
396 if (check_mode(t, cmd) == EINVAL) {
398 if (V4L2_TUNER_RADIO == mode) {
399 set_tv_freq(client, 400 * 16);
401 set_radio_freq(client, 87.5 * 16000);
409 #define switch_v4l2() if (!t->using_v4l2) \
410 tuner_dbg("switching to v4l2\n"); \
413 static inline int check_v4l2(struct tuner *t)
416 tuner_dbg ("ignore v4l1 call\n");
422 static int tuner_command(struct i2c_client *client, unsigned int cmd, void *arg)
424 struct tuner *t = i2c_get_clientdata(client);
425 unsigned int *iarg = (int *)arg;
428 /* --- configuration --- */
429 case TUNER_SET_TYPE_ADDR:
430 tuner_dbg ("Calling set_type_addr for type=%d, addr=0x%02x, mode=0x%02x\n",
431 ((struct tuner_setup *)arg)->type,
432 ((struct tuner_setup *)arg)->addr,
433 ((struct tuner_setup *)arg)->mode_mask);
435 set_addr(client, (struct tuner_setup *)arg);
438 set_mode(client,t,V4L2_TUNER_RADIO, "AUDC_SET_RADIO");
440 case AUDC_CONFIG_PINNACLE:
441 if (check_mode(t, "AUDC_CONFIG_PINNACLE") == EINVAL)
445 tuner_dbg("pinnacle pal\n");
446 t->radio_if2 = 33300 * 1000;
449 tuner_dbg("pinnacle ntsc\n");
450 t->radio_if2 = 41300 * 1000;
454 case TDA9887_SET_CONFIG:
456 /* --- v4l ioctls --- */
457 /* take care: bttv does userspace copying, we'll get a
458 kernel pointer here... */
461 static const v4l2_std_id map[] = {
462 [VIDEO_MODE_PAL] = V4L2_STD_PAL,
463 [VIDEO_MODE_NTSC] = V4L2_STD_NTSC_M,
464 [VIDEO_MODE_SECAM] = V4L2_STD_SECAM,
465 [4 /* bttv */ ] = V4L2_STD_PAL_M,
466 [5 /* bttv */ ] = V4L2_STD_PAL_N,
467 [6 /* bttv */ ] = V4L2_STD_NTSC_M_JP,
469 struct video_channel *vc = arg;
471 if (check_v4l2(t) == EINVAL)
474 if (set_mode(client,t,V4L2_TUNER_ANALOG_TV, "VIDIOCSCHAN")==EINVAL)
477 if (vc->norm < ARRAY_SIZE(map))
478 t->std = map[vc->norm];
481 set_tv_freq(client, t->freq);
486 unsigned long *v = arg;
488 if (check_mode(t, "VIDIOCSFREQ") == EINVAL)
490 if (check_v4l2(t) == EINVAL)
493 set_freq(client, *v);
498 struct video_tuner *vt = arg;
500 if (check_mode(t, "VIDIOCGTUNER") == EINVAL)
502 if (check_v4l2(t) == EINVAL)
505 if (V4L2_TUNER_RADIO == t->mode) {
507 vt->signal = t->has_signal(client);
509 if (t->is_stereo(client))
511 VIDEO_TUNER_STEREO_ON;
514 ~VIDEO_TUNER_STEREO_ON;
516 vt->flags |= VIDEO_TUNER_LOW; /* Allow freqs at 62.5 Hz */
518 vt->rangelow = radio_range[0] * 16000;
519 vt->rangehigh = radio_range[1] * 16000;
522 vt->rangelow = tv_range[0] * 16;
523 vt->rangehigh = tv_range[1] * 16;
530 struct video_audio *va = arg;
532 if (check_mode(t, "VIDIOCGAUDIO") == EINVAL)
534 if (check_v4l2(t) == EINVAL)
537 if (V4L2_TUNER_RADIO == t->mode && t->is_stereo)
538 va->mode = t->is_stereo(client)
539 ? VIDEO_SOUND_STEREO : VIDEO_SOUND_MONO;
545 v4l2_std_id *id = arg;
547 if (set_mode (client, t, V4L2_TUNER_ANALOG_TV, "VIDIOC_S_STD")
556 set_freq(client, t->freq);
559 case VIDIOC_S_FREQUENCY:
561 struct v4l2_frequency *f = arg;
563 t->freq = f->frequency;
565 if (V4L2_TUNER_RADIO == f->type &&
566 V4L2_TUNER_RADIO != t->mode) {
567 if (set_mode (client, t, f->type, "VIDIOC_S_FREQUENCY")
571 set_freq(client,t->freq);
575 case VIDIOC_G_FREQUENCY:
577 struct v4l2_frequency *f = arg;
579 if (check_mode(t, "VIDIOC_G_FREQUENCY") == EINVAL)
583 f->frequency = t->freq;
588 struct v4l2_tuner *tuner = arg;
590 if (check_mode(t, "VIDIOC_G_TUNER") == EINVAL)
594 if (V4L2_TUNER_RADIO == t->mode) {
597 tuner->signal = t->has_signal(client);
600 if (t->is_stereo(client)) {
602 V4L2_TUNER_SUB_STEREO |
611 V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
613 tuner->audmode = t->audmode;
615 tuner->rangelow = radio_range[0] * 16000;
616 tuner->rangehigh = radio_range[1] * 16000;
618 tuner->rangelow = tv_range[0] * 16;
619 tuner->rangehigh = tv_range[1] * 16;
625 struct v4l2_tuner *tuner = arg;
627 if (check_mode(t, "VIDIOC_S_TUNER") == EINVAL)
632 if (V4L2_TUNER_RADIO == t->mode) {
633 t->audmode = tuner->audmode;
634 set_radio_freq(client, t->freq);
639 tuner_dbg("Unimplemented IOCTL 0x%08x(dir=%d,tp=0x%02x,nr=%d,sz=%d)\n",
640 cmd, _IOC_DIR(cmd), _IOC_TYPE(cmd),
641 _IOC_NR(cmd), _IOC_SIZE(cmd));
648 static int tuner_suspend(struct device *dev, u32 state, u32 level)
650 struct i2c_client *c = container_of (dev, struct i2c_client, dev);
651 struct tuner *t = i2c_get_clientdata (c);
653 tuner_dbg ("suspend\n");
654 /* FIXME: power down ??? */
658 static int tuner_resume(struct device *dev, u32 level)
660 struct i2c_client *c = container_of (dev, struct i2c_client, dev);
661 struct tuner *t = i2c_get_clientdata (c);
663 tuner_dbg ("resume\n");
665 set_freq(c, t->freq);
669 /* ----------------------------------------------------------------------- */
671 static struct i2c_driver driver = {
672 .owner = THIS_MODULE,
674 .id = I2C_DRIVERID_TUNER,
675 .flags = I2C_DF_NOTIFY,
676 .attach_adapter = tuner_probe,
677 .detach_client = tuner_detach,
678 .command = tuner_command,
680 .suspend = tuner_suspend,
681 .resume = tuner_resume,
684 static struct i2c_client client_template = {
685 I2C_DEVNAME("(tuner unset)"),
686 .flags = I2C_CLIENT_ALLOW_USE,
690 static int __init tuner_init_module(void)
692 return i2c_add_driver(&driver);
695 static void __exit tuner_cleanup_module(void)
697 i2c_del_driver(&driver);
700 module_init(tuner_init_module);
701 module_exit(tuner_cleanup_module);
704 * Overrides for Emacs so that we follow Linus's tabbing style.
705 * ---------------------------------------------------------------------------