3 * i2c tv tuner chip device driver
4 * core core, i.e. kernel interfaces, registering and so on
7 #include <linux/module.h>
8 #include <linux/moduleparam.h>
9 #include <linux/kernel.h>
10 #include <linux/sched.h>
11 #include <linux/string.h>
12 #include <linux/timer.h>
13 #include <linux/delay.h>
14 #include <linux/errno.h>
15 #include <linux/slab.h>
16 #include <linux/poll.h>
17 #include <linux/i2c.h>
18 #include <linux/types.h>
19 #include <linux/videodev.h>
20 #include <linux/init.h>
22 #include <media/tuner.h>
23 #include <media/audiochip.h>
29 /* standard i2c insmod options */
30 static unsigned short normal_i2c[] = {
32 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
33 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
39 /* insmod options used at init time => read/only */
40 static unsigned int addr = 0;
41 module_param(addr, int, 0444);
43 static unsigned int no_autodetect = 0;
44 module_param(no_autodetect, int, 0444);
46 static unsigned int show_i2c = 0;
47 module_param(show_i2c, int, 0444);
49 /* insmod options used at runtime => read/write */
50 unsigned int tuner_debug = 0;
51 module_param(tuner_debug, int, 0644);
53 static unsigned int tv_range[2] = { 44, 958 };
54 static unsigned int radio_range[2] = { 65, 108 };
56 module_param_array(tv_range, int, NULL, 0644);
57 module_param_array(radio_range, int, NULL, 0644);
59 MODULE_DESCRIPTION("device driver for various TV and TV+FM radio tuners");
60 MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer");
61 MODULE_LICENSE("GPL");
63 static struct i2c_driver driver;
64 static struct i2c_client client_template;
66 /* ---------------------------------------------------------------------- */
68 /* Set tuner frequency, freq in Units of 62.5kHz = 1/16MHz */
69 static void set_tv_freq(struct i2c_client *c, unsigned int freq)
71 struct tuner *t = i2c_get_clientdata(c);
73 if (t->type == UNSET) {
74 tuner_warn ("tuner type not set\n");
77 if (NULL == t->tv_freq) {
78 tuner_warn ("Tuner has no way to set tv freq\n");
81 if (freq < tv_range[0] * 16 || freq > tv_range[1] * 16) {
82 tuner_dbg ("TV freq (%d.%02d) out of range (%d-%d)\n",
83 freq / 16, freq % 16 * 100 / 16, tv_range[0],
89 static void set_radio_freq(struct i2c_client *c, unsigned int freq)
91 struct tuner *t = i2c_get_clientdata(c);
93 if (t->type == UNSET) {
94 tuner_warn ("tuner type not set\n");
97 if (NULL == t->radio_freq) {
98 tuner_warn ("tuner has no way to set radio frequency\n");
101 if (freq <= radio_range[0] * 16000 || freq >= radio_range[1] * 16000) {
102 tuner_dbg ("radio freq (%d.%02d) out of range (%d-%d)\n",
103 freq / 16000, freq % 16000 * 100 / 16000,
104 radio_range[0], radio_range[1]);
107 t->radio_freq(c, freq);
111 static void set_freq(struct i2c_client *c, unsigned long freq)
113 struct tuner *t = i2c_get_clientdata(c);
116 case V4L2_TUNER_RADIO:
117 tuner_dbg("radio freq set to %lu.%02lu\n",
118 freq / 16000, freq % 16000 * 100 / 16000);
119 set_radio_freq(c, freq);
121 case V4L2_TUNER_ANALOG_TV:
122 case V4L2_TUNER_DIGITAL_TV:
123 tuner_dbg("tv freq set to %lu.%02lu\n",
124 freq / 16, freq % 16 * 100 / 16);
125 set_tv_freq(c, freq);
131 static void set_type(struct i2c_client *c, unsigned int type,
132 unsigned int new_mode_mask)
134 struct tuner *t = i2c_get_clientdata(c);
135 unsigned char buffer[4];
137 if (type == UNSET || type == TUNER_ABSENT) {
138 tuner_dbg ("tuner 0x%02x: Tuner type absent\n",c->addr);
142 if (type >= tuner_count) {
143 tuner_warn ("tuner 0x%02x: Tuner count greater than %d\n",c->addr,tuner_count);
147 /* This code detects calls by card attach_inform */
148 if (NULL == t->i2c.dev.driver) {
149 tuner_dbg ("tuner 0x%02x: called during i2c_client register by adapter's attach_inform\n", c->addr);
161 case TUNER_PHILIPS_TDA8290:
165 if (tea5767_tuner_init(c) == EINVAL) {
166 t->type = TUNER_ABSENT;
167 t->mode_mask = T_UNINITIALIZED;
170 t->mode_mask = T_RADIO;
172 case TUNER_PHILIPS_FMD1216ME_MK3:
177 i2c_master_send(c, buffer, 4);
181 i2c_master_send(c, buffer, 4);
182 default_tuner_init(c);
184 case TUNER_LG_TDVS_H062F:
185 /* Set the Auxiliary Byte. */
189 i2c_master_send(c, buffer, 4);
190 default_tuner_init(c);
193 default_tuner_init(c);
197 if (t->mode_mask == T_UNINITIALIZED)
198 t->mode_mask = new_mode_mask;
200 set_freq(c, t->freq);
201 tuner_dbg("%s %s I2C addr 0x%02x with type %d used for 0x%02x\n",
202 c->adapter->name, c->driver->name, c->addr << 1, type,
207 * This function apply tuner config to tuner specified
208 * by tun_setup structure. I addr is unset, then admin status
209 * and tun addr status is more precise then current status,
210 * it's applied. Otherwise status and type are applied only to
211 * tuner with exactly the same addr.
214 static void set_addr(struct i2c_client *c, struct tuner_setup *tun_setup)
216 struct tuner *t = i2c_get_clientdata(c);
218 if ((tun_setup->addr == ADDR_UNSET &&
219 (t->mode_mask & tun_setup->mode_mask)) ||
220 tun_setup->addr == c->addr) {
221 set_type(c, tun_setup->type, tun_setup->mode_mask);
225 static inline int check_mode(struct tuner *t, char *cmd)
227 if ((1 << t->mode & t->mode_mask) == 0) {
232 case V4L2_TUNER_RADIO:
233 tuner_dbg("Cmd %s accepted for radio\n", cmd);
235 case V4L2_TUNER_ANALOG_TV:
236 tuner_dbg("Cmd %s accepted for analog TV\n", cmd);
238 case V4L2_TUNER_DIGITAL_TV:
239 tuner_dbg("Cmd %s accepted for digital TV\n", cmd);
245 static char pal[] = "-";
246 module_param_string(pal, pal, sizeof(pal), 0644);
247 static char secam[] = "-";
248 module_param_string(secam, secam, sizeof(secam), 0644);
250 /* get more precise norm info from insmod option */
251 static int tuner_fixup_std(struct tuner *t)
253 if ((t->std & V4L2_STD_PAL) == V4L2_STD_PAL) {
259 tuner_dbg ("insmod fixup: PAL => PAL-BG\n");
260 t->std = V4L2_STD_PAL_BG;
264 tuner_dbg ("insmod fixup: PAL => PAL-I\n");
265 t->std = V4L2_STD_PAL_I;
271 tuner_dbg ("insmod fixup: PAL => PAL-DK\n");
272 t->std = V4L2_STD_PAL_DK;
276 tuner_dbg ("insmod fixup: PAL => PAL-M\n");
277 t->std = V4L2_STD_PAL_M;
281 tuner_dbg ("insmod fixup: PAL => PAL-N\n");
282 t->std = V4L2_STD_PAL_N;
286 if ((t->std & V4L2_STD_SECAM) == V4L2_STD_SECAM) {
292 tuner_dbg ("insmod fixup: SECAM => SECAM-DK\n");
293 t->std = V4L2_STD_SECAM_DK;
297 tuner_dbg ("insmod fixup: SECAM => SECAM-L\n");
298 t->std = V4L2_STD_SECAM_L;
306 /* ---------------------------------------------------------------------- */
308 /* static var Used only in tuner_attach and tuner_probe */
309 static unsigned default_mode_mask;
311 /* During client attach, set_type is called by adapter's attach_inform callback.
312 set_type must then be completed by tuner_attach.
314 static int tuner_attach(struct i2c_adapter *adap, int addr, int kind)
318 client_template.adapter = adap;
319 client_template.addr = addr;
321 t = kmalloc(sizeof(struct tuner), GFP_KERNEL);
324 memset(t, 0, sizeof(struct tuner));
325 memcpy(&t->i2c, &client_template, sizeof(struct i2c_client));
326 i2c_set_clientdata(&t->i2c, t);
328 t->radio_if2 = 10700 * 1000; /* 10.7MHz - FM radio */
329 t->audmode = V4L2_TUNER_MODE_STEREO;
330 t->mode_mask = T_UNINITIALIZED;
333 tuner_info("chip found @ 0x%x (%s)\n", addr << 1, adap->name);
336 unsigned char buffer[16];
339 memset(buffer, 0, sizeof(buffer));
340 rc = i2c_master_recv(&t->i2c, buffer, sizeof(buffer));
341 printk("tuner-%04x I2C RECV = ",addr);
343 printk("%02x ",buffer[i]);
346 /* TEA5767 autodetection code - only for addr = 0xc0 */
347 if (!no_autodetect) {
349 if (tea5767_autodetection(&t->i2c) != EINVAL) {
350 t->type = TUNER_TEA5767;
351 t->mode_mask = T_RADIO;
353 t->freq = 87.5 * 16; /* Sets freq to FM range */
354 default_mode_mask &= ~T_RADIO;
356 i2c_attach_client (&t->i2c);
357 set_type(&t->i2c,t->type, t->mode_mask);
363 /* Initializes only the first adapter found */
364 if (default_mode_mask != T_UNINITIALIZED) {
365 tuner_dbg ("Setting mode_mask to 0x%02x\n", default_mode_mask);
366 t->mode_mask = default_mode_mask;
367 t->freq = 400 * 16; /* Sets freq to VHF High */
368 default_mode_mask = T_UNINITIALIZED;
371 /* Should be just before return */
372 i2c_attach_client (&t->i2c);
373 set_type (&t->i2c,t->type, t->mode_mask);
377 static int tuner_probe(struct i2c_adapter *adap)
380 normal_i2c[0] = addr;
381 normal_i2c[1] = I2C_CLIENT_END;
384 default_mode_mask = T_RADIO | T_ANALOG_TV | T_DIGITAL_TV;
386 if (adap->class & I2C_CLASS_TV_ANALOG)
387 return i2c_probe(adap, &addr_data, tuner_attach);
391 static int tuner_detach(struct i2c_client *client)
393 struct tuner *t = i2c_get_clientdata(client);
396 err = i2c_detach_client(&t->i2c);
399 ("Client deregistration failed, client not detached.\n");
408 * Switch tuner to other mode. If tuner support both tv and radio,
409 * set another frequency to some value (This is needed for some pal
410 * tuners to avoid locking). Otherwise, just put second tuner in
414 static inline int set_mode(struct i2c_client *client, struct tuner *t, int mode, char *cmd)
421 if (check_mode(t, cmd) == EINVAL) {
430 #define switch_v4l2() if (!t->using_v4l2) \
431 tuner_dbg("switching to v4l2\n"); \
434 static inline int check_v4l2(struct tuner *t)
437 tuner_dbg ("ignore v4l1 call\n");
443 static int tuner_command(struct i2c_client *client, unsigned int cmd, void *arg)
445 struct tuner *t = i2c_get_clientdata(client);
446 unsigned int *iarg = (int *)arg;
449 /* --- configuration --- */
450 case TUNER_SET_TYPE_ADDR:
451 tuner_dbg ("Calling set_type_addr for type=%d, addr=0x%02x, mode=0x%02x\n",
452 ((struct tuner_setup *)arg)->type,
453 ((struct tuner_setup *)arg)->addr,
454 ((struct tuner_setup *)arg)->mode_mask);
456 set_addr(client, (struct tuner_setup *)arg);
459 set_mode(client,t,V4L2_TUNER_RADIO, "AUDC_SET_RADIO");
461 case TUNER_SET_STANDBY:
463 if (check_mode(t, "TUNER_SET_STANDBY") == EINVAL)
469 case AUDC_CONFIG_PINNACLE:
470 if (check_mode(t, "AUDC_CONFIG_PINNACLE") == EINVAL)
474 tuner_dbg("pinnacle pal\n");
475 t->radio_if2 = 33300 * 1000;
478 tuner_dbg("pinnacle ntsc\n");
479 t->radio_if2 = 41300 * 1000;
484 if (check_mode(t, "VIDIOCSAUDIO") == EINVAL)
486 if (check_v4l2(t) == EINVAL)
489 /* Should be implemented, since bttv calls it */
490 tuner_dbg("VIDIOCSAUDIO not implemented.\n");
494 case TDA9887_SET_CONFIG:
496 /* --- v4l ioctls --- */
497 /* take care: bttv does userspace copying, we'll get a
498 kernel pointer here... */
501 static const v4l2_std_id map[] = {
502 [VIDEO_MODE_PAL] = V4L2_STD_PAL,
503 [VIDEO_MODE_NTSC] = V4L2_STD_NTSC_M,
504 [VIDEO_MODE_SECAM] = V4L2_STD_SECAM,
505 [4 /* bttv */ ] = V4L2_STD_PAL_M,
506 [5 /* bttv */ ] = V4L2_STD_PAL_N,
507 [6 /* bttv */ ] = V4L2_STD_NTSC_M_JP,
509 struct video_channel *vc = arg;
511 if (check_v4l2(t) == EINVAL)
514 if (set_mode(client,t,V4L2_TUNER_ANALOG_TV, "VIDIOCSCHAN")==EINVAL)
517 if (vc->norm < ARRAY_SIZE(map))
518 t->std = map[vc->norm];
521 set_tv_freq(client, t->freq);
526 unsigned long *v = arg;
528 if (check_mode(t, "VIDIOCSFREQ") == EINVAL)
530 if (check_v4l2(t) == EINVAL)
533 set_freq(client, *v);
538 struct video_tuner *vt = arg;
540 if (check_mode(t, "VIDIOCGTUNER") == EINVAL)
542 if (check_v4l2(t) == EINVAL)
545 if (V4L2_TUNER_RADIO == t->mode) {
547 vt->signal = t->has_signal(client);
549 if (t->is_stereo(client))
551 VIDEO_TUNER_STEREO_ON;
554 ~VIDEO_TUNER_STEREO_ON;
556 vt->flags |= VIDEO_TUNER_LOW; /* Allow freqs at 62.5 Hz */
558 vt->rangelow = radio_range[0] * 16000;
559 vt->rangehigh = radio_range[1] * 16000;
562 vt->rangelow = tv_range[0] * 16;
563 vt->rangehigh = tv_range[1] * 16;
570 struct video_audio *va = arg;
572 if (check_mode(t, "VIDIOCGAUDIO") == EINVAL)
574 if (check_v4l2(t) == EINVAL)
577 if (V4L2_TUNER_RADIO == t->mode && t->is_stereo)
578 va->mode = t->is_stereo(client)
579 ? VIDEO_SOUND_STEREO : VIDEO_SOUND_MONO;
585 v4l2_std_id *id = arg;
587 if (set_mode (client, t, V4L2_TUNER_ANALOG_TV, "VIDIOC_S_STD")
596 set_freq(client, t->freq);
599 case VIDIOC_S_FREQUENCY:
601 struct v4l2_frequency *f = arg;
603 t->freq = f->frequency;
605 if (V4L2_TUNER_RADIO == f->type &&
606 V4L2_TUNER_RADIO != t->mode) {
607 if (set_mode (client, t, f->type, "VIDIOC_S_FREQUENCY")
611 set_freq(client,t->freq);
615 case VIDIOC_G_FREQUENCY:
617 struct v4l2_frequency *f = arg;
619 if (check_mode(t, "VIDIOC_G_FREQUENCY") == EINVAL)
623 f->frequency = t->freq;
628 struct v4l2_tuner *tuner = arg;
630 if (check_mode(t, "VIDIOC_G_TUNER") == EINVAL)
634 if (V4L2_TUNER_RADIO == t->mode) {
637 tuner->signal = t->has_signal(client);
640 if (t->is_stereo(client)) {
642 V4L2_TUNER_SUB_STEREO |
651 V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
653 tuner->audmode = t->audmode;
655 tuner->rangelow = radio_range[0] * 16000;
656 tuner->rangehigh = radio_range[1] * 16000;
658 tuner->rangelow = tv_range[0] * 16;
659 tuner->rangehigh = tv_range[1] * 16;
665 struct v4l2_tuner *tuner = arg;
667 if (check_mode(t, "VIDIOC_S_TUNER") == EINVAL)
672 if (V4L2_TUNER_RADIO == t->mode) {
673 t->audmode = tuner->audmode;
674 set_radio_freq(client, t->freq);
679 tuner_dbg("Unimplemented IOCTL 0x%08x(dir=%d,tp=0x%02x,nr=%d,sz=%d)\n",
680 cmd, _IOC_DIR(cmd), _IOC_TYPE(cmd),
681 _IOC_NR(cmd), _IOC_SIZE(cmd));
688 static int tuner_suspend(struct device *dev, pm_message_t state, u32 level)
690 struct i2c_client *c = container_of (dev, struct i2c_client, dev);
691 struct tuner *t = i2c_get_clientdata (c);
693 tuner_dbg ("suspend\n");
694 /* FIXME: power down ??? */
698 static int tuner_resume(struct device *dev, u32 level)
700 struct i2c_client *c = container_of (dev, struct i2c_client, dev);
701 struct tuner *t = i2c_get_clientdata (c);
703 tuner_dbg ("resume\n");
705 set_freq(c, t->freq);
709 /* ----------------------------------------------------------------------- */
711 static struct i2c_driver driver = {
712 .owner = THIS_MODULE,
714 .id = I2C_DRIVERID_TUNER,
715 .flags = I2C_DF_NOTIFY,
716 .attach_adapter = tuner_probe,
717 .detach_client = tuner_detach,
718 .command = tuner_command,
720 .suspend = tuner_suspend,
721 .resume = tuner_resume,
724 static struct i2c_client client_template = {
725 .name = "(tuner unset)",
726 .flags = I2C_CLIENT_ALLOW_USE,
730 static int __init tuner_init_module(void)
732 return i2c_add_driver(&driver);
735 static void __exit tuner_cleanup_module(void)
737 i2c_del_driver(&driver);
740 module_init(tuner_init_module);
741 module_exit(tuner_cleanup_module);
744 * Overrides for Emacs so that we follow Linus's tabbing style.
745 * ---------------------------------------------------------------------------