1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21#include "fc2580_priv.h"
22
23
24
25
26
27
28
29
30
31
32
33static int fc2580_wr_reg_ff(struct fc2580_dev *dev, u8 reg, u8 val)
34{
35 if (val == 0xff)
36 return 0;
37 else
38 return regmap_write(dev->regmap, reg, val);
39}
40
41static int fc2580_set_params(struct fc2580_dev *dev)
42{
43 struct i2c_client *client = dev->client;
44 int ret, i;
45 unsigned int uitmp, div_ref, div_ref_val, div_n, k, k_cw, div_out;
46 u64 f_vco;
47 u8 synth_config;
48 unsigned long timeout;
49
50 if (!dev->active) {
51 dev_dbg(&client->dev, "tuner is sleeping\n");
52 return 0;
53 }
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70 for (i = 0; i < ARRAY_SIZE(fc2580_pll_lut); i++) {
71 if (dev->f_frequency <= fc2580_pll_lut[i].freq)
72 break;
73 }
74 if (i == ARRAY_SIZE(fc2580_pll_lut)) {
75 ret = -EINVAL;
76 goto err;
77 }
78
79 #define DIV_PRE_N 2
80 #define F_REF dev->clk
81 div_out = fc2580_pll_lut[i].div_out;
82 f_vco = (u64) dev->f_frequency * div_out;
83 synth_config = fc2580_pll_lut[i].band;
84 if (f_vco < 2600000000ULL)
85 synth_config |= 0x06;
86 else
87 synth_config |= 0x0e;
88
89
90 #define DIV_N_MIN 76
91 if (f_vco >= div_u64((u64) DIV_PRE_N * DIV_N_MIN * F_REF, 1)) {
92 div_ref = 1;
93 div_ref_val = 0x00;
94 } else if (f_vco >= div_u64((u64) DIV_PRE_N * DIV_N_MIN * F_REF, 2)) {
95 div_ref = 2;
96 div_ref_val = 0x10;
97 } else {
98 div_ref = 4;
99 div_ref_val = 0x20;
100 }
101
102
103 uitmp = DIV_PRE_N * F_REF / div_ref;
104 div_n = div_u64_rem(f_vco, uitmp, &k);
105 k_cw = div_u64((u64) k * 0x100000, uitmp);
106
107 dev_dbg(&client->dev,
108 "frequency=%u bandwidth=%u f_vco=%llu F_REF=%u div_ref=%u div_n=%u k=%u div_out=%u k_cw=%0x\n",
109 dev->f_frequency, dev->f_bandwidth, f_vco, F_REF, div_ref,
110 div_n, k, div_out, k_cw);
111
112 ret = regmap_write(dev->regmap, 0x02, synth_config);
113 if (ret)
114 goto err;
115
116 ret = regmap_write(dev->regmap, 0x18, div_ref_val << 0 | k_cw >> 16);
117 if (ret)
118 goto err;
119
120 ret = regmap_write(dev->regmap, 0x1a, (k_cw >> 8) & 0xff);
121 if (ret)
122 goto err;
123
124 ret = regmap_write(dev->regmap, 0x1b, (k_cw >> 0) & 0xff);
125 if (ret)
126 goto err;
127
128 ret = regmap_write(dev->regmap, 0x1c, div_n);
129 if (ret)
130 goto err;
131
132
133 for (i = 0; i < ARRAY_SIZE(fc2580_freq_regs_lut); i++) {
134 if (dev->f_frequency <= fc2580_freq_regs_lut[i].freq)
135 break;
136 }
137 if (i == ARRAY_SIZE(fc2580_freq_regs_lut)) {
138 ret = -EINVAL;
139 goto err;
140 }
141
142 ret = fc2580_wr_reg_ff(dev, 0x25, fc2580_freq_regs_lut[i].r25_val);
143 if (ret)
144 goto err;
145
146 ret = fc2580_wr_reg_ff(dev, 0x27, fc2580_freq_regs_lut[i].r27_val);
147 if (ret)
148 goto err;
149
150 ret = fc2580_wr_reg_ff(dev, 0x28, fc2580_freq_regs_lut[i].r28_val);
151 if (ret)
152 goto err;
153
154 ret = fc2580_wr_reg_ff(dev, 0x29, fc2580_freq_regs_lut[i].r29_val);
155 if (ret)
156 goto err;
157
158 ret = fc2580_wr_reg_ff(dev, 0x2b, fc2580_freq_regs_lut[i].r2b_val);
159 if (ret)
160 goto err;
161
162 ret = fc2580_wr_reg_ff(dev, 0x2c, fc2580_freq_regs_lut[i].r2c_val);
163 if (ret)
164 goto err;
165
166 ret = fc2580_wr_reg_ff(dev, 0x2d, fc2580_freq_regs_lut[i].r2d_val);
167 if (ret)
168 goto err;
169
170 ret = fc2580_wr_reg_ff(dev, 0x30, fc2580_freq_regs_lut[i].r30_val);
171 if (ret)
172 goto err;
173
174 ret = fc2580_wr_reg_ff(dev, 0x44, fc2580_freq_regs_lut[i].r44_val);
175 if (ret)
176 goto err;
177
178 ret = fc2580_wr_reg_ff(dev, 0x50, fc2580_freq_regs_lut[i].r50_val);
179 if (ret)
180 goto err;
181
182 ret = fc2580_wr_reg_ff(dev, 0x53, fc2580_freq_regs_lut[i].r53_val);
183 if (ret)
184 goto err;
185
186 ret = fc2580_wr_reg_ff(dev, 0x5f, fc2580_freq_regs_lut[i].r5f_val);
187 if (ret)
188 goto err;
189
190 ret = fc2580_wr_reg_ff(dev, 0x61, fc2580_freq_regs_lut[i].r61_val);
191 if (ret)
192 goto err;
193
194 ret = fc2580_wr_reg_ff(dev, 0x62, fc2580_freq_regs_lut[i].r62_val);
195 if (ret)
196 goto err;
197
198 ret = fc2580_wr_reg_ff(dev, 0x63, fc2580_freq_regs_lut[i].r63_val);
199 if (ret)
200 goto err;
201
202 ret = fc2580_wr_reg_ff(dev, 0x67, fc2580_freq_regs_lut[i].r67_val);
203 if (ret)
204 goto err;
205
206 ret = fc2580_wr_reg_ff(dev, 0x68, fc2580_freq_regs_lut[i].r68_val);
207 if (ret)
208 goto err;
209
210 ret = fc2580_wr_reg_ff(dev, 0x69, fc2580_freq_regs_lut[i].r69_val);
211 if (ret)
212 goto err;
213
214 ret = fc2580_wr_reg_ff(dev, 0x6a, fc2580_freq_regs_lut[i].r6a_val);
215 if (ret)
216 goto err;
217
218 ret = fc2580_wr_reg_ff(dev, 0x6b, fc2580_freq_regs_lut[i].r6b_val);
219 if (ret)
220 goto err;
221
222 ret = fc2580_wr_reg_ff(dev, 0x6c, fc2580_freq_regs_lut[i].r6c_val);
223 if (ret)
224 goto err;
225
226 ret = fc2580_wr_reg_ff(dev, 0x6d, fc2580_freq_regs_lut[i].r6d_val);
227 if (ret)
228 goto err;
229
230 ret = fc2580_wr_reg_ff(dev, 0x6e, fc2580_freq_regs_lut[i].r6e_val);
231 if (ret)
232 goto err;
233
234 ret = fc2580_wr_reg_ff(dev, 0x6f, fc2580_freq_regs_lut[i].r6f_val);
235 if (ret)
236 goto err;
237
238
239 for (i = 0; i < ARRAY_SIZE(fc2580_if_filter_lut); i++) {
240 if (dev->f_bandwidth <= fc2580_if_filter_lut[i].freq)
241 break;
242 }
243 if (i == ARRAY_SIZE(fc2580_if_filter_lut)) {
244 ret = -EINVAL;
245 goto err;
246 }
247
248 ret = regmap_write(dev->regmap, 0x36, fc2580_if_filter_lut[i].r36_val);
249 if (ret)
250 goto err;
251
252 uitmp = (unsigned int) 8058000 - (dev->f_bandwidth * 122 / 100 / 2);
253 uitmp = div64_u64((u64) dev->clk * uitmp, 1000000000000ULL);
254 ret = regmap_write(dev->regmap, 0x37, uitmp);
255 if (ret)
256 goto err;
257
258 ret = regmap_write(dev->regmap, 0x39, fc2580_if_filter_lut[i].r39_val);
259 if (ret)
260 goto err;
261
262 timeout = jiffies + msecs_to_jiffies(30);
263 for (uitmp = ~0xc0; !time_after(jiffies, timeout) && uitmp != 0xc0;) {
264
265 ret = regmap_write(dev->regmap, 0x2e, 0x09);
266 if (ret)
267 goto err;
268
269
270 ret = regmap_read(dev->regmap, 0x2f, &uitmp);
271 if (ret)
272 goto err;
273 uitmp &= 0xc0;
274
275 ret = regmap_write(dev->regmap, 0x2e, 0x01);
276 if (ret)
277 goto err;
278 }
279 if (uitmp != 0xc0)
280 dev_dbg(&client->dev, "filter did not lock %02x\n", uitmp);
281
282 return 0;
283err:
284 dev_dbg(&client->dev, "failed=%d\n", ret);
285 return ret;
286}
287
288static int fc2580_init(struct fc2580_dev *dev)
289{
290 struct i2c_client *client = dev->client;
291 int ret, i;
292
293 dev_dbg(&client->dev, "\n");
294
295 for (i = 0; i < ARRAY_SIZE(fc2580_init_reg_vals); i++) {
296 ret = regmap_write(dev->regmap, fc2580_init_reg_vals[i].reg,
297 fc2580_init_reg_vals[i].val);
298 if (ret)
299 goto err;
300 }
301
302 dev->active = true;
303 return 0;
304err:
305 dev_dbg(&client->dev, "failed=%d\n", ret);
306 return ret;
307}
308
309static int fc2580_sleep(struct fc2580_dev *dev)
310{
311 struct i2c_client *client = dev->client;
312 int ret;
313
314 dev_dbg(&client->dev, "\n");
315
316 dev->active = false;
317
318 ret = regmap_write(dev->regmap, 0x02, 0x0a);
319 if (ret)
320 goto err;
321 return 0;
322err:
323 dev_dbg(&client->dev, "failed=%d\n", ret);
324 return ret;
325}
326
327
328
329
330static int fc2580_dvb_set_params(struct dvb_frontend *fe)
331{
332 struct fc2580_dev *dev = fe->tuner_priv;
333 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
334
335 dev->f_frequency = c->frequency;
336 dev->f_bandwidth = c->bandwidth_hz;
337 return fc2580_set_params(dev);
338}
339
340static int fc2580_dvb_init(struct dvb_frontend *fe)
341{
342 return fc2580_init(fe->tuner_priv);
343}
344
345static int fc2580_dvb_sleep(struct dvb_frontend *fe)
346{
347 return fc2580_sleep(fe->tuner_priv);
348}
349
350static int fc2580_dvb_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
351{
352 *frequency = 0;
353 return 0;
354}
355
356static const struct dvb_tuner_ops fc2580_dvb_tuner_ops = {
357 .info = {
358 .name = "FCI FC2580",
359 .frequency_min = 174000000,
360 .frequency_max = 862000000,
361 },
362
363 .init = fc2580_dvb_init,
364 .sleep = fc2580_dvb_sleep,
365 .set_params = fc2580_dvb_set_params,
366
367 .get_if_frequency = fc2580_dvb_get_if_frequency,
368};
369
370
371
372
373#if IS_ENABLED(CONFIG_VIDEO_V4L2)
374static const struct v4l2_frequency_band bands[] = {
375 {
376 .type = V4L2_TUNER_RF,
377 .index = 0,
378 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
379 .rangelow = 130000000,
380 .rangehigh = 2000000000,
381 },
382};
383
384static inline struct fc2580_dev *fc2580_subdev_to_dev(struct v4l2_subdev *sd)
385{
386 return container_of(sd, struct fc2580_dev, subdev);
387}
388
389static int fc2580_standby(struct v4l2_subdev *sd)
390{
391 struct fc2580_dev *dev = fc2580_subdev_to_dev(sd);
392 int ret;
393
394 ret = fc2580_sleep(dev);
395 if (ret)
396 return ret;
397
398 return fc2580_set_params(dev);
399}
400
401static int fc2580_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *v)
402{
403 struct fc2580_dev *dev = fc2580_subdev_to_dev(sd);
404 struct i2c_client *client = dev->client;
405
406 dev_dbg(&client->dev, "index=%d\n", v->index);
407
408 strlcpy(v->name, "FCI FC2580", sizeof(v->name));
409 v->type = V4L2_TUNER_RF;
410 v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;
411 v->rangelow = bands[0].rangelow;
412 v->rangehigh = bands[0].rangehigh;
413 return 0;
414}
415
416static int fc2580_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *v)
417{
418 struct fc2580_dev *dev = fc2580_subdev_to_dev(sd);
419 struct i2c_client *client = dev->client;
420
421 dev_dbg(&client->dev, "index=%d\n", v->index);
422 return 0;
423}
424
425static int fc2580_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f)
426{
427 struct fc2580_dev *dev = fc2580_subdev_to_dev(sd);
428 struct i2c_client *client = dev->client;
429
430 dev_dbg(&client->dev, "tuner=%d\n", f->tuner);
431 f->frequency = dev->f_frequency;
432 return 0;
433}
434
435static int fc2580_s_frequency(struct v4l2_subdev *sd,
436 const struct v4l2_frequency *f)
437{
438 struct fc2580_dev *dev = fc2580_subdev_to_dev(sd);
439 struct i2c_client *client = dev->client;
440
441 dev_dbg(&client->dev, "tuner=%d type=%d frequency=%u\n",
442 f->tuner, f->type, f->frequency);
443
444 dev->f_frequency = clamp_t(unsigned int, f->frequency,
445 bands[0].rangelow, bands[0].rangehigh);
446 return fc2580_set_params(dev);
447}
448
449static int fc2580_enum_freq_bands(struct v4l2_subdev *sd,
450 struct v4l2_frequency_band *band)
451{
452 struct fc2580_dev *dev = fc2580_subdev_to_dev(sd);
453 struct i2c_client *client = dev->client;
454
455 dev_dbg(&client->dev, "tuner=%d type=%d index=%d\n",
456 band->tuner, band->type, band->index);
457
458 if (band->index >= ARRAY_SIZE(bands))
459 return -EINVAL;
460
461 band->capability = bands[band->index].capability;
462 band->rangelow = bands[band->index].rangelow;
463 band->rangehigh = bands[band->index].rangehigh;
464 return 0;
465}
466
467static const struct v4l2_subdev_tuner_ops fc2580_subdev_tuner_ops = {
468 .standby = fc2580_standby,
469 .g_tuner = fc2580_g_tuner,
470 .s_tuner = fc2580_s_tuner,
471 .g_frequency = fc2580_g_frequency,
472 .s_frequency = fc2580_s_frequency,
473 .enum_freq_bands = fc2580_enum_freq_bands,
474};
475
476static const struct v4l2_subdev_ops fc2580_subdev_ops = {
477 .tuner = &fc2580_subdev_tuner_ops,
478};
479
480static int fc2580_s_ctrl(struct v4l2_ctrl *ctrl)
481{
482 struct fc2580_dev *dev = container_of(ctrl->handler, struct fc2580_dev, hdl);
483 struct i2c_client *client = dev->client;
484 int ret;
485
486 dev_dbg(&client->dev, "ctrl: id=%d name=%s cur.val=%d val=%d\n",
487 ctrl->id, ctrl->name, ctrl->cur.val, ctrl->val);
488
489 switch (ctrl->id) {
490 case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO:
491 case V4L2_CID_RF_TUNER_BANDWIDTH:
492
493
494
495
496
497 dev->f_bandwidth = dev->bandwidth->val;
498 ret = fc2580_set_params(dev);
499 break;
500 default:
501 dev_dbg(&client->dev, "unknown ctrl");
502 ret = -EINVAL;
503 }
504 return ret;
505}
506
507static const struct v4l2_ctrl_ops fc2580_ctrl_ops = {
508 .s_ctrl = fc2580_s_ctrl,
509};
510#endif
511
512static struct v4l2_subdev *fc2580_get_v4l2_subdev(struct i2c_client *client)
513{
514 struct fc2580_dev *dev = i2c_get_clientdata(client);
515
516 if (dev->subdev.ops)
517 return &dev->subdev;
518 else
519 return NULL;
520}
521
522static int fc2580_probe(struct i2c_client *client,
523 const struct i2c_device_id *id)
524{
525 struct fc2580_dev *dev;
526 struct fc2580_platform_data *pdata = client->dev.platform_data;
527 struct dvb_frontend *fe = pdata->dvb_frontend;
528 int ret;
529 unsigned int uitmp;
530 static const struct regmap_config regmap_config = {
531 .reg_bits = 8,
532 .val_bits = 8,
533 };
534
535 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
536 if (!dev) {
537 ret = -ENOMEM;
538 goto err;
539 }
540
541 if (pdata->clk)
542 dev->clk = pdata->clk;
543 else
544 dev->clk = 16384000;
545 dev->client = client;
546 dev->regmap = devm_regmap_init_i2c(client, ®map_config);
547 if (IS_ERR(dev->regmap)) {
548 ret = PTR_ERR(dev->regmap);
549 goto err_kfree;
550 }
551
552
553 ret = regmap_read(dev->regmap, 0x01, &uitmp);
554 if (ret)
555 goto err_kfree;
556
557 dev_dbg(&client->dev, "chip_id=%02x\n", uitmp);
558
559 switch (uitmp) {
560 case 0x56:
561 case 0x5a:
562 break;
563 default:
564 ret = -ENODEV;
565 goto err_kfree;
566 }
567
568#if IS_ENABLED(CONFIG_VIDEO_V4L2)
569
570 v4l2_ctrl_handler_init(&dev->hdl, 2);
571 dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, &fc2580_ctrl_ops,
572 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO,
573 0, 1, 1, 1);
574 dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, &fc2580_ctrl_ops,
575 V4L2_CID_RF_TUNER_BANDWIDTH,
576 3000, 10000000, 1, 3000);
577 v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false);
578 if (dev->hdl.error) {
579 ret = dev->hdl.error;
580 dev_err(&client->dev, "Could not initialize controls\n");
581 v4l2_ctrl_handler_free(&dev->hdl);
582 goto err_kfree;
583 }
584 dev->subdev.ctrl_handler = &dev->hdl;
585 dev->f_frequency = bands[0].rangelow;
586 dev->f_bandwidth = dev->bandwidth->val;
587 v4l2_i2c_subdev_init(&dev->subdev, client, &fc2580_subdev_ops);
588#endif
589 fe->tuner_priv = dev;
590 memcpy(&fe->ops.tuner_ops, &fc2580_dvb_tuner_ops,
591 sizeof(fe->ops.tuner_ops));
592 pdata->get_v4l2_subdev = fc2580_get_v4l2_subdev;
593 i2c_set_clientdata(client, dev);
594
595 dev_info(&client->dev, "FCI FC2580 successfully identified\n");
596 return 0;
597err_kfree:
598 kfree(dev);
599err:
600 dev_dbg(&client->dev, "failed=%d\n", ret);
601 return ret;
602}
603
604static int fc2580_remove(struct i2c_client *client)
605{
606 struct fc2580_dev *dev = i2c_get_clientdata(client);
607
608 dev_dbg(&client->dev, "\n");
609
610#if IS_ENABLED(CONFIG_VIDEO_V4L2)
611 v4l2_ctrl_handler_free(&dev->hdl);
612#endif
613 kfree(dev);
614 return 0;
615}
616
617static const struct i2c_device_id fc2580_id_table[] = {
618 {"fc2580", 0},
619 {}
620};
621MODULE_DEVICE_TABLE(i2c, fc2580_id_table);
622
623static struct i2c_driver fc2580_driver = {
624 .driver = {
625 .name = "fc2580",
626 .suppress_bind_attrs = true,
627 },
628 .probe = fc2580_probe,
629 .remove = fc2580_remove,
630 .id_table = fc2580_id_table,
631};
632
633module_i2c_driver(fc2580_driver);
634
635MODULE_DESCRIPTION("FCI FC2580 silicon tuner driver");
636MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
637MODULE_LICENSE("GPL");
638
