2 * Panasonic MN88473 DVB-T/T2/C demodulator driver
4 * Copyright (C) 2014 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 "mn88473_priv.h"
19 static int mn88473_get_tune_settings(struct dvb_frontend
*fe
,
20 struct dvb_frontend_tune_settings
*s
)
22 s
->min_delay_ms
= 1000;
26 static int mn88473_set_frontend(struct dvb_frontend
*fe
)
28 struct i2c_client
*client
= fe
->demodulator_priv
;
29 struct mn88473_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];
37 "delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%d stream_id=%d\n",
51 switch (c
->delivery_system
) {
53 delivery_system_val
= 0x02;
56 delivery_system_val
= 0x03;
58 case SYS_DVBC_ANNEX_A
:
59 delivery_system_val
= 0x04;
66 if (c
->bandwidth_hz
<= 6000000) {
67 memcpy(bw_val
, "\xe9\x55\x55\x1c\x29\x1c\x29", 7);
68 } else if (c
->bandwidth_hz
<= 7000000) {
69 memcpy(bw_val
, "\xc8\x00\x00\x17\x0a\x17\x0a", 7);
70 } else if (c
->bandwidth_hz
<= 8000000) {
71 memcpy(bw_val
, "\xaf\x00\x00\x11\xec\x11\xec", 7);
78 if (fe
->ops
.tuner_ops
.set_params
) {
79 ret
= fe
->ops
.tuner_ops
.set_params(fe
);
84 if (fe
->ops
.tuner_ops
.get_if_frequency
) {
85 ret
= fe
->ops
.tuner_ops
.get_if_frequency(fe
, &if_frequency
);
89 dev_dbg(&client
->dev
, "get_if_frequency=%d\n", if_frequency
);
94 /* Calculate IF registers ( (1<<24)*IF / Xtal ) */
95 tmp
= div_u64(if_frequency
* (u64
)(1<<24) + (dev
->xtal
/ 2),
97 if_val
[0] = ((tmp
>> 16) & 0xff);
98 if_val
[1] = ((tmp
>> 8) & 0xff);
99 if_val
[2] = ((tmp
>> 0) & 0xff);
101 ret
= regmap_write(dev
->regmap
[2], 0x05, 0x00);
102 ret
= regmap_write(dev
->regmap
[2], 0xfb, 0x13);
103 ret
= regmap_write(dev
->regmap
[2], 0xef, 0x13);
104 ret
= regmap_write(dev
->regmap
[2], 0xf9, 0x13);
105 ret
= regmap_write(dev
->regmap
[2], 0x00, 0x18);
106 ret
= regmap_write(dev
->regmap
[2], 0x01, 0x01);
107 ret
= regmap_write(dev
->regmap
[2], 0x02, 0x21);
108 ret
= regmap_write(dev
->regmap
[2], 0x03, delivery_system_val
);
109 ret
= regmap_write(dev
->regmap
[2], 0x0b, 0x00);
111 for (i
= 0; i
< sizeof(if_val
); i
++) {
112 ret
= regmap_write(dev
->regmap
[2], 0x10 + i
, if_val
[i
]);
117 for (i
= 0; i
< sizeof(bw_val
); i
++) {
118 ret
= regmap_write(dev
->regmap
[2], 0x13 + i
, bw_val
[i
]);
123 ret
= regmap_write(dev
->regmap
[2], 0x2d, 0x3b);
124 ret
= regmap_write(dev
->regmap
[2], 0x2e, 0x00);
125 ret
= regmap_write(dev
->regmap
[2], 0x56, 0x0d);
126 ret
= regmap_write(dev
->regmap
[0], 0x01, 0xba);
127 ret
= regmap_write(dev
->regmap
[0], 0x02, 0x13);
128 ret
= regmap_write(dev
->regmap
[0], 0x03, 0x80);
129 ret
= regmap_write(dev
->regmap
[0], 0x04, 0xba);
130 ret
= regmap_write(dev
->regmap
[0], 0x05, 0x91);
131 ret
= regmap_write(dev
->regmap
[0], 0x07, 0xe7);
132 ret
= regmap_write(dev
->regmap
[0], 0x08, 0x28);
133 ret
= regmap_write(dev
->regmap
[0], 0x0a, 0x1a);
134 ret
= regmap_write(dev
->regmap
[0], 0x13, 0x1f);
135 ret
= regmap_write(dev
->regmap
[0], 0x19, 0x03);
136 ret
= regmap_write(dev
->regmap
[0], 0x1d, 0xb0);
137 ret
= regmap_write(dev
->regmap
[0], 0x2a, 0x72);
138 ret
= regmap_write(dev
->regmap
[0], 0x2d, 0x00);
139 ret
= regmap_write(dev
->regmap
[0], 0x3c, 0x00);
140 ret
= regmap_write(dev
->regmap
[0], 0x3f, 0xf8);
141 ret
= regmap_write(dev
->regmap
[0], 0x40, 0xf4);
142 ret
= regmap_write(dev
->regmap
[0], 0x41, 0x08);
143 ret
= regmap_write(dev
->regmap
[0], 0xd2, 0x29);
144 ret
= regmap_write(dev
->regmap
[0], 0xd4, 0x55);
145 ret
= regmap_write(dev
->regmap
[1], 0x10, 0x10);
146 ret
= regmap_write(dev
->regmap
[1], 0x11, 0xab);
147 ret
= regmap_write(dev
->regmap
[1], 0x12, 0x0d);
148 ret
= regmap_write(dev
->regmap
[1], 0x13, 0xae);
149 ret
= regmap_write(dev
->regmap
[1], 0x14, 0x1d);
150 ret
= regmap_write(dev
->regmap
[1], 0x15, 0x9d);
151 ret
= regmap_write(dev
->regmap
[1], 0xbe, 0x08);
152 ret
= regmap_write(dev
->regmap
[2], 0x09, 0x08);
153 ret
= regmap_write(dev
->regmap
[2], 0x08, 0x1d);
154 ret
= regmap_write(dev
->regmap
[0], 0xb2, 0x37);
155 ret
= regmap_write(dev
->regmap
[0], 0xd7, 0x04);
156 ret
= regmap_write(dev
->regmap
[2], 0x32, 0x80);
157 ret
= regmap_write(dev
->regmap
[2], 0x36, 0x00);
158 ret
= regmap_write(dev
->regmap
[2], 0xf8, 0x9f);
162 dev
->delivery_system
= c
->delivery_system
;
166 dev_dbg(&client
->dev
, "failed=%d\n", ret
);
170 static int mn88473_read_status(struct dvb_frontend
*fe
, enum fe_status
*status
)
172 struct i2c_client
*client
= fe
->demodulator_priv
;
173 struct mn88473_dev
*dev
= i2c_get_clientdata(client
);
174 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
186 switch (c
->delivery_system
) {
188 ret
= regmap_read(dev
->regmap
[0], 0x62, &utmp
);
191 if (!(utmp
& 0xA0)) {
192 if ((utmp
& 0xF) >= 0x03)
193 *status
|= FE_HAS_SIGNAL
;
194 if ((utmp
& 0xF) >= 0x09)
199 ret
= regmap_read(dev
->regmap
[2], 0x8B, &utmp
);
202 if (!(utmp
& 0x40)) {
203 if ((utmp
& 0xF) >= 0x07)
204 *status
|= FE_HAS_SIGNAL
;
205 if ((utmp
& 0xF) >= 0x0a)
206 *status
|= FE_HAS_CARRIER
;
207 if ((utmp
& 0xF) >= 0x0d)
208 *status
|= FE_HAS_VITERBI
| FE_HAS_SYNC
| FE_HAS_LOCK
;
211 case SYS_DVBC_ANNEX_A
:
212 ret
= regmap_read(dev
->regmap
[1], 0x85, &utmp
);
215 if (!(utmp
& 0x40)) {
216 ret
= regmap_read(dev
->regmap
[1], 0x89, &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 mn88473_init(struct dvb_frontend
*fe
)
240 struct i2c_client
*client
= fe
->demodulator_priv
;
241 struct mn88473_dev
*dev
= i2c_get_clientdata(client
);
242 int ret
, len
, remaining
;
243 const struct firmware
*fw
= NULL
;
244 u8
*fw_file
= MN88473_FIRMWARE
;
247 dev_dbg(&client
->dev
, "\n");
249 /* set cold state by default */
252 /* check if firmware is already running */
253 ret
= regmap_read(dev
->regmap
[0], 0xf5, &tmp
);
258 dev_info(&client
->dev
, "firmware already running\n");
263 /* request the firmware, this will block and timeout */
264 ret
= request_firmware(&fw
, fw_file
, &client
->dev
);
266 dev_err(&client
->dev
, "firmare file '%s' not found\n", fw_file
);
267 goto err_request_firmware
;
270 dev_info(&client
->dev
, "downloading firmware from file '%s'\n",
273 ret
= regmap_write(dev
->regmap
[0], 0xf5, 0x03);
277 for (remaining
= fw
->size
; remaining
> 0;
278 remaining
-= (dev
->i2c_wr_max
- 1)) {
280 if (len
> (dev
->i2c_wr_max
- 1))
281 len
= dev
->i2c_wr_max
- 1;
283 ret
= regmap_bulk_write(dev
->regmap
[0], 0xf6,
284 &fw
->data
[fw
->size
- remaining
], len
);
286 dev_err(&client
->dev
, "firmware download failed=%d\n",
292 /* parity check of firmware */
293 ret
= regmap_read(dev
->regmap
[0], 0xf8, &tmp
);
295 dev_err(&client
->dev
,
296 "parity reg read failed=%d\n", ret
);
300 dev_err(&client
->dev
,
301 "firmware parity check failed=0x%x\n", tmp
);
304 dev_err(&client
->dev
, "firmware parity check succeeded=0x%x\n", tmp
);
306 ret
= regmap_write(dev
->regmap
[0], 0xf5, 0x00);
310 release_firmware(fw
);
319 release_firmware(fw
);
320 err_request_firmware
:
321 dev_dbg(&client
->dev
, "failed=%d\n", ret
);
325 static int mn88473_sleep(struct dvb_frontend
*fe
)
327 struct i2c_client
*client
= fe
->demodulator_priv
;
328 struct mn88473_dev
*dev
= i2c_get_clientdata(client
);
331 dev_dbg(&client
->dev
, "\n");
333 ret
= regmap_write(dev
->regmap
[2], 0x05, 0x3e);
337 dev
->delivery_system
= SYS_UNDEFINED
;
341 dev_dbg(&client
->dev
, "failed=%d\n", ret
);
345 static struct dvb_frontend_ops mn88473_ops
= {
346 .delsys
= {SYS_DVBT
, SYS_DVBT2
, SYS_DVBC_ANNEX_AC
},
348 .name
= "Panasonic MN88473",
349 .symbol_rate_min
= 1000000,
350 .symbol_rate_max
= 7200000,
351 .caps
= FE_CAN_FEC_1_2
|
364 FE_CAN_TRANSMISSION_MODE_AUTO
|
365 FE_CAN_GUARD_INTERVAL_AUTO
|
366 FE_CAN_HIERARCHY_AUTO
|
368 FE_CAN_2G_MODULATION
|
372 .get_tune_settings
= mn88473_get_tune_settings
,
374 .init
= mn88473_init
,
375 .sleep
= mn88473_sleep
,
377 .set_frontend
= mn88473_set_frontend
,
379 .read_status
= mn88473_read_status
,
382 static int mn88473_probe(struct i2c_client
*client
,
383 const struct i2c_device_id
*id
)
385 struct mn88473_config
*config
= client
->dev
.platform_data
;
386 struct mn88473_dev
*dev
;
389 static const struct regmap_config regmap_config
= {
394 dev_dbg(&client
->dev
, "\n");
396 /* Caller really need to provide pointer for frontend we create. */
397 if (config
->fe
== NULL
) {
398 dev_err(&client
->dev
, "frontend pointer not defined\n");
403 dev
= kzalloc(sizeof(*dev
), GFP_KERNEL
);
409 dev
->i2c_wr_max
= config
->i2c_wr_max
;
411 dev
->xtal
= 25000000;
413 dev
->xtal
= config
->xtal
;
414 dev
->client
[0] = client
;
415 dev
->regmap
[0] = regmap_init_i2c(dev
->client
[0], ®map_config
);
416 if (IS_ERR(dev
->regmap
[0])) {
417 ret
= PTR_ERR(dev
->regmap
[0]);
421 /* check demod answers to I2C */
422 ret
= regmap_read(dev
->regmap
[0], 0x00, &utmp
);
424 goto err_regmap_0_regmap_exit
;
427 * Chip has three I2C addresses for different register pages. Used
428 * addresses are 0x18, 0x1a and 0x1c. We register two dummy clients,
429 * 0x1a and 0x1c, in order to get own I2C client for each register page.
431 dev
->client
[1] = i2c_new_dummy(client
->adapter
, 0x1a);
432 if (dev
->client
[1] == NULL
) {
434 dev_err(&client
->dev
, "I2C registration failed\n");
436 goto err_regmap_0_regmap_exit
;
438 dev
->regmap
[1] = regmap_init_i2c(dev
->client
[1], ®map_config
);
439 if (IS_ERR(dev
->regmap
[1])) {
440 ret
= PTR_ERR(dev
->regmap
[1]);
441 goto err_client_1_i2c_unregister_device
;
443 i2c_set_clientdata(dev
->client
[1], dev
);
445 dev
->client
[2] = i2c_new_dummy(client
->adapter
, 0x1c);
446 if (dev
->client
[2] == NULL
) {
448 dev_err(&client
->dev
, "2nd I2C registration failed\n");
450 goto err_regmap_1_regmap_exit
;
452 dev
->regmap
[2] = regmap_init_i2c(dev
->client
[2], ®map_config
);
453 if (IS_ERR(dev
->regmap
[2])) {
454 ret
= PTR_ERR(dev
->regmap
[2]);
455 goto err_client_2_i2c_unregister_device
;
457 i2c_set_clientdata(dev
->client
[2], dev
);
459 /* create dvb_frontend */
460 memcpy(&dev
->fe
.ops
, &mn88473_ops
, sizeof(struct dvb_frontend_ops
));
461 dev
->fe
.demodulator_priv
= client
;
462 *config
->fe
= &dev
->fe
;
463 i2c_set_clientdata(client
, dev
);
465 dev_info(&dev
->client
[0]->dev
, "Panasonic MN88473 successfully attached\n");
468 err_client_2_i2c_unregister_device
:
469 i2c_unregister_device(dev
->client
[2]);
470 err_regmap_1_regmap_exit
:
471 regmap_exit(dev
->regmap
[1]);
472 err_client_1_i2c_unregister_device
:
473 i2c_unregister_device(dev
->client
[1]);
474 err_regmap_0_regmap_exit
:
475 regmap_exit(dev
->regmap
[0]);
479 dev_dbg(&client
->dev
, "failed=%d\n", ret
);
483 static int mn88473_remove(struct i2c_client
*client
)
485 struct mn88473_dev
*dev
= i2c_get_clientdata(client
);
487 dev_dbg(&client
->dev
, "\n");
489 regmap_exit(dev
->regmap
[2]);
490 i2c_unregister_device(dev
->client
[2]);
492 regmap_exit(dev
->regmap
[1]);
493 i2c_unregister_device(dev
->client
[1]);
495 regmap_exit(dev
->regmap
[0]);
502 static const struct i2c_device_id mn88473_id_table
[] = {
506 MODULE_DEVICE_TABLE(i2c
, mn88473_id_table
);
508 static struct i2c_driver mn88473_driver
= {
512 .probe
= mn88473_probe
,
513 .remove
= mn88473_remove
,
514 .id_table
= mn88473_id_table
,
517 module_i2c_driver(mn88473_driver
);
519 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
520 MODULE_DESCRIPTION("Panasonic MN88473 DVB-T/T2/C demodulator driver");
521 MODULE_LICENSE("GPL");
522 MODULE_FIRMWARE(MN88473_FIRMWARE
);