2 * Panasonic MN88472 DVB-T/T2/C demodulator driver
4 * Copyright (C) 2013 Antti Palosaari <crope@iki.fi>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
17 #include "mn88472_priv.h"
19 static int mn88472_get_tune_settings(struct dvb_frontend
*fe
,
20 struct dvb_frontend_tune_settings
*s
)
22 s
->min_delay_ms
= 400;
26 static int mn88472_set_frontend(struct dvb_frontend
*fe
)
28 struct i2c_client
*client
= fe
->demodulator_priv
;
29 struct mn88472_dev
*dev
= i2c_get_clientdata(client
);
30 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
34 u8 delivery_system_val
, if_val
[3], bw_val
[7], bw_val2
;
37 "delivery_system=%d modulation=%d frequency=%d symbol_rate=%d inversion=%d\n",
38 c
->delivery_system
, c
->modulation
,
39 c
->frequency
, c
->symbol_rate
, c
->inversion
);
46 switch (c
->delivery_system
) {
48 delivery_system_val
= 0x02;
51 delivery_system_val
= 0x03;
53 case SYS_DVBC_ANNEX_A
:
54 delivery_system_val
= 0x04;
61 if (c
->bandwidth_hz
<= 5000000) {
62 memcpy(bw_val
, "\xe5\x99\x9a\x1b\xa9\x1b\xa9", 7);
64 } else if (c
->bandwidth_hz
<= 6000000) {
65 /* IF 3570000 Hz, BW 6000000 Hz */
66 memcpy(bw_val
, "\xbf\x55\x55\x15\x6b\x15\x6b", 7);
68 } else if (c
->bandwidth_hz
<= 7000000) {
69 /* IF 4570000 Hz, BW 7000000 Hz */
70 memcpy(bw_val
, "\xa4\x00\x00\x0f\x2c\x0f\x2c", 7);
72 } else if (c
->bandwidth_hz
<= 8000000) {
73 /* IF 4570000 Hz, BW 8000000 Hz */
74 memcpy(bw_val
, "\x8f\x80\x00\x08\xee\x08\xee", 7);
82 if (fe
->ops
.tuner_ops
.set_params
) {
83 ret
= fe
->ops
.tuner_ops
.set_params(fe
);
88 if (fe
->ops
.tuner_ops
.get_if_frequency
) {
89 ret
= fe
->ops
.tuner_ops
.get_if_frequency(fe
, &if_frequency
);
93 dev_dbg(&client
->dev
, "get_if_frequency=%d\n", if_frequency
);
96 /* Calculate IF registers ( (1<<24)*IF / Xtal ) */
97 tmp
= div_u64(if_frequency
* (u64
)(1<<24) + (dev
->xtal
/ 2),
99 if_val
[0] = ((tmp
>> 16) & 0xff);
100 if_val
[1] = ((tmp
>> 8) & 0xff);
101 if_val
[2] = ((tmp
>> 0) & 0xff);
103 ret
= regmap_write(dev
->regmap
[2], 0xfb, 0x13);
104 ret
= regmap_write(dev
->regmap
[2], 0xef, 0x13);
105 ret
= regmap_write(dev
->regmap
[2], 0xf9, 0x13);
109 ret
= regmap_write(dev
->regmap
[2], 0x00, 0x66);
112 ret
= regmap_write(dev
->regmap
[2], 0x01, 0x00);
115 ret
= regmap_write(dev
->regmap
[2], 0x02, 0x01);
118 ret
= regmap_write(dev
->regmap
[2], 0x03, delivery_system_val
);
121 ret
= regmap_write(dev
->regmap
[2], 0x04, bw_val2
);
125 for (i
= 0; i
< sizeof(if_val
); i
++) {
126 ret
= regmap_write(dev
->regmap
[2], 0x10 + i
, if_val
[i
]);
131 for (i
= 0; i
< sizeof(bw_val
); i
++) {
132 ret
= regmap_write(dev
->regmap
[2], 0x13 + i
, bw_val
[i
]);
137 switch (c
->delivery_system
) {
139 ret
= regmap_write(dev
->regmap
[0], 0x07, 0x26);
140 ret
= regmap_write(dev
->regmap
[0], 0xb0, 0x0a);
141 ret
= regmap_write(dev
->regmap
[0], 0xb4, 0x00);
142 ret
= regmap_write(dev
->regmap
[0], 0xcd, 0x1f);
143 ret
= regmap_write(dev
->regmap
[0], 0xd4, 0x0a);
144 ret
= regmap_write(dev
->regmap
[0], 0xd6, 0x48);
145 ret
= regmap_write(dev
->regmap
[0], 0x00, 0xba);
146 ret
= regmap_write(dev
->regmap
[0], 0x01, 0x13);
151 ret
= regmap_write(dev
->regmap
[2], 0x2b, 0x13);
152 ret
= regmap_write(dev
->regmap
[2], 0x4f, 0x05);
153 ret
= regmap_write(dev
->regmap
[1], 0xf6, 0x05);
154 ret
= regmap_write(dev
->regmap
[0], 0xb0, 0x0a);
155 ret
= regmap_write(dev
->regmap
[0], 0xb4, 0xf6);
156 ret
= regmap_write(dev
->regmap
[0], 0xcd, 0x01);
157 ret
= regmap_write(dev
->regmap
[0], 0xd4, 0x09);
158 ret
= regmap_write(dev
->regmap
[0], 0xd6, 0x46);
159 ret
= regmap_write(dev
->regmap
[2], 0x30, 0x80);
160 ret
= regmap_write(dev
->regmap
[2], 0x32, 0x00);
164 case SYS_DVBC_ANNEX_A
:
165 ret
= regmap_write(dev
->regmap
[0], 0xb0, 0x0b);
166 ret
= regmap_write(dev
->regmap
[0], 0xb4, 0x00);
167 ret
= regmap_write(dev
->regmap
[0], 0xcd, 0x17);
168 ret
= regmap_write(dev
->regmap
[0], 0xd4, 0x09);
169 ret
= regmap_write(dev
->regmap
[0], 0xd6, 0x48);
170 ret
= regmap_write(dev
->regmap
[1], 0x00, 0xb0);
179 ret
= regmap_write(dev
->regmap
[0], 0x46, 0x00);
180 ret
= regmap_write(dev
->regmap
[0], 0xae, 0x00);
181 ret
= regmap_write(dev
->regmap
[2], 0x08, 0x1d);
182 ret
= regmap_write(dev
->regmap
[0], 0xd9, 0xe3);
185 ret
= regmap_write(dev
->regmap
[2], 0xf8, 0x9f);
189 dev
->delivery_system
= c
->delivery_system
;
193 dev_dbg(&client
->dev
, "failed=%d\n", ret
);
197 static int mn88472_read_status(struct dvb_frontend
*fe
, fe_status_t
*status
)
199 struct i2c_client
*client
= fe
->demodulator_priv
;
200 struct mn88472_dev
*dev
= i2c_get_clientdata(client
);
201 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
212 switch (c
->delivery_system
) {
215 /* FIXME: implement me */
216 utmp
= 0x08; /* DVB-C lock value */
218 case SYS_DVBC_ANNEX_A
:
219 ret
= regmap_read(dev
->regmap
[1], 0x84, &utmp
);
229 *status
= FE_HAS_SIGNAL
| FE_HAS_CARRIER
| FE_HAS_VITERBI
|
230 FE_HAS_SYNC
| FE_HAS_LOCK
;
234 dev_dbg(&client
->dev
, "failed=%d\n", ret
);
238 static int mn88472_init(struct dvb_frontend
*fe
)
240 struct i2c_client
*client
= fe
->demodulator_priv
;
241 struct mn88472_dev
*dev
= i2c_get_clientdata(client
);
242 int ret
, len
, remaining
;
243 const struct firmware
*fw
= NULL
;
244 u8
*fw_file
= MN88472_FIRMWARE
;
246 dev_dbg(&client
->dev
, "\n");
248 /* set cold state by default */
252 ret
= regmap_write(dev
->regmap
[2], 0x05, 0x00);
256 ret
= regmap_bulk_write(dev
->regmap
[2], 0x0b, "\x00\x00", 2);
260 /* request the firmware, this will block and timeout */
261 ret
= request_firmware(&fw
, fw_file
, &client
->dev
);
263 dev_err(&client
->dev
, "firmare file '%s' not found\n",
268 dev_info(&client
->dev
, "downloading firmware from file '%s'\n",
271 ret
= regmap_write(dev
->regmap
[0], 0xf5, 0x03);
275 for (remaining
= fw
->size
; remaining
> 0;
276 remaining
-= (dev
->i2c_wr_max
- 1)) {
278 if (len
> (dev
->i2c_wr_max
- 1))
279 len
= (dev
->i2c_wr_max
- 1);
281 ret
= regmap_bulk_write(dev
->regmap
[0], 0xf6,
282 &fw
->data
[fw
->size
- remaining
], len
);
284 dev_err(&client
->dev
,
285 "firmware download failed=%d\n", ret
);
290 ret
= regmap_write(dev
->regmap
[0], 0xf5, 0x00);
294 release_firmware(fw
);
303 release_firmware(fw
);
305 dev_dbg(&client
->dev
, "failed=%d\n", ret
);
309 static int mn88472_sleep(struct dvb_frontend
*fe
)
311 struct i2c_client
*client
= fe
->demodulator_priv
;
312 struct mn88472_dev
*dev
= i2c_get_clientdata(client
);
315 dev_dbg(&client
->dev
, "\n");
318 ret
= regmap_write(dev
->regmap
[2], 0x0b, 0x30);
323 ret
= regmap_write(dev
->regmap
[2], 0x05, 0x3e);
327 dev
->delivery_system
= SYS_UNDEFINED
;
331 dev_dbg(&client
->dev
, "failed=%d\n", ret
);
335 static struct dvb_frontend_ops mn88472_ops
= {
336 .delsys
= {SYS_DVBT
, SYS_DVBT2
, SYS_DVBC_ANNEX_A
},
338 .name
= "Panasonic MN88472",
339 .caps
= FE_CAN_FEC_1_2
|
352 FE_CAN_TRANSMISSION_MODE_AUTO
|
353 FE_CAN_GUARD_INTERVAL_AUTO
|
354 FE_CAN_HIERARCHY_AUTO
|
356 FE_CAN_2G_MODULATION
|
360 .get_tune_settings
= mn88472_get_tune_settings
,
362 .init
= mn88472_init
,
363 .sleep
= mn88472_sleep
,
365 .set_frontend
= mn88472_set_frontend
,
367 .read_status
= mn88472_read_status
,
370 static int mn88472_probe(struct i2c_client
*client
,
371 const struct i2c_device_id
*id
)
373 struct mn88472_config
*config
= client
->dev
.platform_data
;
374 struct mn88472_dev
*dev
;
377 static const struct regmap_config regmap_config
= {
382 dev_dbg(&client
->dev
, "\n");
384 /* Caller really need to provide pointer for frontend we create. */
385 if (config
->fe
== NULL
) {
386 dev_err(&client
->dev
, "frontend pointer not defined\n");
391 dev
= kzalloc(sizeof(*dev
), GFP_KERNEL
);
397 dev
->i2c_wr_max
= config
->i2c_wr_max
;
398 dev
->xtal
= config
->xtal
;
399 dev
->client
[0] = client
;
400 dev
->regmap
[0] = regmap_init_i2c(dev
->client
[0], ®map_config
);
401 if (IS_ERR(dev
->regmap
[0])) {
402 ret
= PTR_ERR(dev
->regmap
[0]);
406 /* check demod answers to I2C */
407 ret
= regmap_read(dev
->regmap
[0], 0x00, &utmp
);
409 goto err_regmap_0_regmap_exit
;
412 * Chip has three I2C addresses for different register pages. Used
413 * addresses are 0x18, 0x1a and 0x1c. We register two dummy clients,
414 * 0x1a and 0x1c, in order to get own I2C client for each register page.
416 dev
->client
[1] = i2c_new_dummy(client
->adapter
, 0x1a);
417 if (dev
->client
[1] == NULL
) {
419 dev_err(&client
->dev
, "I2C registration failed\n");
421 goto err_regmap_0_regmap_exit
;
423 dev
->regmap
[1] = regmap_init_i2c(dev
->client
[1], ®map_config
);
424 if (IS_ERR(dev
->regmap
[1])) {
425 ret
= PTR_ERR(dev
->regmap
[1]);
426 goto err_client_1_i2c_unregister_device
;
428 i2c_set_clientdata(dev
->client
[1], dev
);
430 dev
->client
[2] = i2c_new_dummy(client
->adapter
, 0x1c);
431 if (dev
->client
[2] == NULL
) {
433 dev_err(&client
->dev
, "2nd I2C registration failed\n");
435 goto err_regmap_1_regmap_exit
;
437 dev
->regmap
[2] = regmap_init_i2c(dev
->client
[2], ®map_config
);
438 if (IS_ERR(dev
->regmap
[2])) {
439 ret
= PTR_ERR(dev
->regmap
[2]);
440 goto err_client_2_i2c_unregister_device
;
442 i2c_set_clientdata(dev
->client
[2], dev
);
444 /* create dvb_frontend */
445 memcpy(&dev
->fe
.ops
, &mn88472_ops
, sizeof(struct dvb_frontend_ops
));
446 dev
->fe
.demodulator_priv
= client
;
447 *config
->fe
= &dev
->fe
;
448 i2c_set_clientdata(client
, dev
);
450 dev_info(&client
->dev
, "Panasonic MN88472 successfully attached\n");
453 err_client_2_i2c_unregister_device
:
454 i2c_unregister_device(dev
->client
[2]);
455 err_regmap_1_regmap_exit
:
456 regmap_exit(dev
->regmap
[1]);
457 err_client_1_i2c_unregister_device
:
458 i2c_unregister_device(dev
->client
[1]);
459 err_regmap_0_regmap_exit
:
460 regmap_exit(dev
->regmap
[0]);
464 dev_dbg(&client
->dev
, "failed=%d\n", ret
);
468 static int mn88472_remove(struct i2c_client
*client
)
470 struct mn88472_dev
*dev
= i2c_get_clientdata(client
);
472 dev_dbg(&client
->dev
, "\n");
474 regmap_exit(dev
->regmap
[2]);
475 i2c_unregister_device(dev
->client
[2]);
477 regmap_exit(dev
->regmap
[1]);
478 i2c_unregister_device(dev
->client
[1]);
480 regmap_exit(dev
->regmap
[0]);
487 static const struct i2c_device_id mn88472_id_table
[] = {
491 MODULE_DEVICE_TABLE(i2c
, mn88472_id_table
);
493 static struct i2c_driver mn88472_driver
= {
495 .owner
= THIS_MODULE
,
498 .probe
= mn88472_probe
,
499 .remove
= mn88472_remove
,
500 .id_table
= mn88472_id_table
,
503 module_i2c_driver(mn88472_driver
);
505 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
506 MODULE_DESCRIPTION("Panasonic MN88472 DVB-T/T2/C demodulator driver");
507 MODULE_LICENSE("GPL");
508 MODULE_FIRMWARE(MN88472_FIRMWARE
);