2 * Silicon Labs Si2146/2147/2148/2157/2158 silicon tuner 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 "si2157_priv.h"
19 static const struct dvb_tuner_ops si2157_ops
;
21 /* execute firmware command */
22 static int si2157_cmd_execute(struct i2c_client
*client
, struct si2157_cmd
*cmd
)
24 struct si2157_dev
*dev
= i2c_get_clientdata(client
);
26 unsigned long timeout
;
28 mutex_lock(&dev
->i2c_mutex
);
31 /* write cmd and args for firmware */
32 ret
= i2c_master_send(client
, cmd
->args
, cmd
->wlen
);
34 goto err_mutex_unlock
;
35 } else if (ret
!= cmd
->wlen
) {
37 goto err_mutex_unlock
;
42 /* wait cmd execution terminate */
44 timeout
= jiffies
+ msecs_to_jiffies(TIMEOUT
);
45 while (!time_after(jiffies
, timeout
)) {
46 ret
= i2c_master_recv(client
, cmd
->args
, cmd
->rlen
);
48 goto err_mutex_unlock
;
49 } else if (ret
!= cmd
->rlen
) {
51 goto err_mutex_unlock
;
55 if ((cmd
->args
[0] >> 7) & 0x01)
59 dev_dbg(&client
->dev
, "cmd execution took %d ms\n",
60 jiffies_to_msecs(jiffies
) -
61 (jiffies_to_msecs(timeout
) - TIMEOUT
));
63 if (!((cmd
->args
[0] >> 7) & 0x01)) {
65 goto err_mutex_unlock
;
69 mutex_unlock(&dev
->i2c_mutex
);
73 mutex_unlock(&dev
->i2c_mutex
);
74 dev_dbg(&client
->dev
, "failed=%d\n", ret
);
78 static int si2157_init(struct dvb_frontend
*fe
)
80 struct i2c_client
*client
= fe
->tuner_priv
;
81 struct si2157_dev
*dev
= i2c_get_clientdata(client
);
82 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
83 int ret
, len
, remaining
;
84 struct si2157_cmd cmd
;
85 const struct firmware
*fw
;
87 unsigned int uitmp
, chip_id
;
89 dev_dbg(&client
->dev
, "\n");
91 /* Returned IF frequency is garbage when firmware is not running */
92 memcpy(cmd
.args
, "\x15\x00\x06\x07", 4);
95 ret
= si2157_cmd_execute(client
, &cmd
);
99 uitmp
= cmd
.args
[2] << 0 | cmd
.args
[3] << 8;
100 dev_dbg(&client
->dev
, "if_frequency kHz=%u\n", uitmp
);
102 if (uitmp
== dev
->if_frequency
/ 1000)
106 if (dev
->chiptype
== SI2157_CHIPTYPE_SI2146
) {
107 memcpy(cmd
.args
, "\xc0\x05\x01\x00\x00\x0b\x00\x00\x01", 9);
109 } else if (dev
->chiptype
== SI2157_CHIPTYPE_SI2141
) {
110 memcpy(cmd
.args
, "\xc0\x00\x0d\x0e\x00\x01\x01\x01\x01\x03", 10);
113 memcpy(cmd
.args
, "\xc0\x00\x0c\x00\x00\x01\x01\x01\x01\x01\x01\x02\x00\x00\x01", 15);
117 ret
= si2157_cmd_execute(client
, &cmd
);
121 /* Si2141 needs a second command before it answers the revision query */
122 if (dev
->chiptype
== SI2157_CHIPTYPE_SI2141
) {
123 memcpy(cmd
.args
, "\xc0\x08\x01\x02\x00\x00\x01", 7);
125 ret
= si2157_cmd_execute(client
, &cmd
);
130 /* query chip revision */
131 memcpy(cmd
.args
, "\x02", 1);
134 ret
= si2157_cmd_execute(client
, &cmd
);
138 chip_id
= cmd
.args
[1] << 24 | cmd
.args
[2] << 16 | cmd
.args
[3] << 8 |
141 #define SI2158_A20 ('A' << 24 | 58 << 16 | '2' << 8 | '0' << 0)
142 #define SI2148_A20 ('A' << 24 | 48 << 16 | '2' << 8 | '0' << 0)
143 #define SI2157_A30 ('A' << 24 | 57 << 16 | '3' << 8 | '0' << 0)
144 #define SI2147_A30 ('A' << 24 | 47 << 16 | '3' << 8 | '0' << 0)
145 #define SI2146_A10 ('A' << 24 | 46 << 16 | '1' << 8 | '0' << 0)
146 #define SI2141_A10 ('A' << 24 | 41 << 16 | '1' << 8 | '0' << 0)
151 fw_name
= SI2158_A20_FIRMWARE
;
154 fw_name
= SI2141_A10_FIRMWARE
;
162 dev_err(&client
->dev
, "unknown chip version Si21%d-%c%c%c\n",
163 cmd
.args
[2], cmd
.args
[1],
164 cmd
.args
[3], cmd
.args
[4]);
169 dev_info(&client
->dev
, "found a 'Silicon Labs Si21%d-%c%c%c'\n",
170 cmd
.args
[2], cmd
.args
[1], cmd
.args
[3], cmd
.args
[4]);
173 goto skip_fw_download
;
175 /* request the firmware, this will block and timeout */
176 ret
= request_firmware(&fw
, fw_name
, &client
->dev
);
178 dev_err(&client
->dev
, "firmware file '%s' not found\n",
183 /* firmware should be n chunks of 17 bytes */
184 if (fw
->size
% 17 != 0) {
185 dev_err(&client
->dev
, "firmware file '%s' is invalid\n",
188 goto err_release_firmware
;
191 dev_info(&client
->dev
, "downloading firmware from file '%s'\n",
194 for (remaining
= fw
->size
; remaining
> 0; remaining
-= 17) {
195 len
= fw
->data
[fw
->size
- remaining
];
196 if (len
> SI2157_ARGLEN
) {
197 dev_err(&client
->dev
, "Bad firmware length\n");
199 goto err_release_firmware
;
201 memcpy(cmd
.args
, &fw
->data
[(fw
->size
- remaining
) + 1], len
);
204 ret
= si2157_cmd_execute(client
, &cmd
);
206 dev_err(&client
->dev
, "firmware download failed %d\n",
208 goto err_release_firmware
;
212 release_firmware(fw
);
215 /* reboot the tuner with new firmware? */
216 memcpy(cmd
.args
, "\x01\x01", 2);
219 ret
= si2157_cmd_execute(client
, &cmd
);
223 /* query firmware version */
224 memcpy(cmd
.args
, "\x11", 1);
227 ret
= si2157_cmd_execute(client
, &cmd
);
231 dev_info(&client
->dev
, "firmware version: %c.%c.%d\n",
232 cmd
.args
[6], cmd
.args
[7], cmd
.args
[8]);
234 /* init statistics in order signal app which are supported */
236 c
->strength
.stat
[0].scale
= FE_SCALE_NOT_AVAILABLE
;
237 /* start statistics polling */
238 schedule_delayed_work(&dev
->stat_work
, msecs_to_jiffies(1000));
242 err_release_firmware
:
243 release_firmware(fw
);
245 dev_dbg(&client
->dev
, "failed=%d\n", ret
);
249 static int si2157_sleep(struct dvb_frontend
*fe
)
251 struct i2c_client
*client
= fe
->tuner_priv
;
252 struct si2157_dev
*dev
= i2c_get_clientdata(client
);
254 struct si2157_cmd cmd
;
256 dev_dbg(&client
->dev
, "\n");
260 /* stop statistics polling */
261 cancel_delayed_work_sync(&dev
->stat_work
);
264 memcpy(cmd
.args
, "\x16\x00", 2);
267 ret
= si2157_cmd_execute(client
, &cmd
);
273 dev_dbg(&client
->dev
, "failed=%d\n", ret
);
277 static int si2157_set_params(struct dvb_frontend
*fe
)
279 struct i2c_client
*client
= fe
->tuner_priv
;
280 struct si2157_dev
*dev
= i2c_get_clientdata(client
);
281 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
283 struct si2157_cmd cmd
;
284 u8 bandwidth
, delivery_system
;
285 u32 if_frequency
= 5000000;
287 dev_dbg(&client
->dev
,
288 "delivery_system=%d frequency=%u bandwidth_hz=%u\n",
289 c
->delivery_system
, c
->frequency
, c
->bandwidth_hz
);
296 if (c
->bandwidth_hz
<= 6000000)
298 else if (c
->bandwidth_hz
<= 7000000)
300 else if (c
->bandwidth_hz
<= 8000000)
305 switch (c
->delivery_system
) {
307 delivery_system
= 0x00;
308 if_frequency
= 3250000;
310 case SYS_DVBC_ANNEX_B
:
311 delivery_system
= 0x10;
312 if_frequency
= 4000000;
315 case SYS_DVBT2
: /* it seems DVB-T and DVB-T2 both are 0x20 here */
316 delivery_system
= 0x20;
318 case SYS_DVBC_ANNEX_A
:
319 delivery_system
= 0x30;
326 memcpy(cmd
.args
, "\x14\x00\x03\x07\x00\x00", 6);
327 cmd
.args
[4] = delivery_system
| bandwidth
;
332 ret
= si2157_cmd_execute(client
, &cmd
);
336 if (dev
->chiptype
== SI2157_CHIPTYPE_SI2146
)
337 memcpy(cmd
.args
, "\x14\x00\x02\x07\x00\x01", 6);
339 memcpy(cmd
.args
, "\x14\x00\x02\x07\x00\x00", 6);
340 cmd
.args
[4] = dev
->if_port
;
343 ret
= si2157_cmd_execute(client
, &cmd
);
347 /* set if frequency if needed */
348 if (if_frequency
!= dev
->if_frequency
) {
349 memcpy(cmd
.args
, "\x14\x00\x06\x07", 4);
350 cmd
.args
[4] = (if_frequency
/ 1000) & 0xff;
351 cmd
.args
[5] = ((if_frequency
/ 1000) >> 8) & 0xff;
354 ret
= si2157_cmd_execute(client
, &cmd
);
358 dev
->if_frequency
= if_frequency
;
362 memcpy(cmd
.args
, "\x41\x00\x00\x00\x00\x00\x00\x00", 8);
363 cmd
.args
[4] = (c
->frequency
>> 0) & 0xff;
364 cmd
.args
[5] = (c
->frequency
>> 8) & 0xff;
365 cmd
.args
[6] = (c
->frequency
>> 16) & 0xff;
366 cmd
.args
[7] = (c
->frequency
>> 24) & 0xff;
369 ret
= si2157_cmd_execute(client
, &cmd
);
375 dev_dbg(&client
->dev
, "failed=%d\n", ret
);
379 static int si2157_get_if_frequency(struct dvb_frontend
*fe
, u32
*frequency
)
381 struct i2c_client
*client
= fe
->tuner_priv
;
382 struct si2157_dev
*dev
= i2c_get_clientdata(client
);
384 *frequency
= dev
->if_frequency
;
388 static const struct dvb_tuner_ops si2157_ops
= {
390 .name
= "Silicon Labs Si2141/Si2146/2147/2148/2157/2158",
391 .frequency_min
= 42000000,
392 .frequency_max
= 870000000,
396 .sleep
= si2157_sleep
,
397 .set_params
= si2157_set_params
,
398 .get_if_frequency
= si2157_get_if_frequency
,
401 static void si2157_stat_work(struct work_struct
*work
)
403 struct si2157_dev
*dev
= container_of(work
, struct si2157_dev
, stat_work
.work
);
404 struct dvb_frontend
*fe
= dev
->fe
;
405 struct i2c_client
*client
= fe
->tuner_priv
;
406 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
407 struct si2157_cmd cmd
;
410 dev_dbg(&client
->dev
, "\n");
412 memcpy(cmd
.args
, "\x42\x00", 2);
415 ret
= si2157_cmd_execute(client
, &cmd
);
419 c
->strength
.stat
[0].scale
= FE_SCALE_DECIBEL
;
420 c
->strength
.stat
[0].svalue
= (s8
) cmd
.args
[3] * 1000;
422 schedule_delayed_work(&dev
->stat_work
, msecs_to_jiffies(2000));
425 c
->strength
.stat
[0].scale
= FE_SCALE_NOT_AVAILABLE
;
426 dev_dbg(&client
->dev
, "failed=%d\n", ret
);
429 static int si2157_probe(struct i2c_client
*client
,
430 const struct i2c_device_id
*id
)
432 struct si2157_config
*cfg
= client
->dev
.platform_data
;
433 struct dvb_frontend
*fe
= cfg
->fe
;
434 struct si2157_dev
*dev
;
435 struct si2157_cmd cmd
;
438 dev
= kzalloc(sizeof(*dev
), GFP_KERNEL
);
441 dev_err(&client
->dev
, "kzalloc() failed\n");
445 i2c_set_clientdata(client
, dev
);
447 dev
->inversion
= cfg
->inversion
;
448 dev
->if_port
= cfg
->if_port
;
449 dev
->chiptype
= (u8
)id
->driver_data
;
450 dev
->if_frequency
= 5000000; /* default value of property 0x0706 */
451 mutex_init(&dev
->i2c_mutex
);
452 INIT_DELAYED_WORK(&dev
->stat_work
, si2157_stat_work
);
454 /* check if the tuner is there */
457 ret
= si2157_cmd_execute(client
, &cmd
);
461 memcpy(&fe
->ops
.tuner_ops
, &si2157_ops
, sizeof(struct dvb_tuner_ops
));
462 fe
->tuner_priv
= client
;
464 #ifdef CONFIG_MEDIA_CONTROLLER
466 dev
->mdev
= cfg
->mdev
;
468 dev
->ent
.name
= KBUILD_MODNAME
;
469 dev
->ent
.function
= MEDIA_ENT_F_TUNER
;
471 dev
->pad
[TUNER_PAD_RF_INPUT
].flags
= MEDIA_PAD_FL_SINK
;
472 dev
->pad
[TUNER_PAD_OUTPUT
].flags
= MEDIA_PAD_FL_SOURCE
;
473 dev
->pad
[TUNER_PAD_AUD_OUT
].flags
= MEDIA_PAD_FL_SOURCE
;
475 ret
= media_entity_pads_init(&dev
->ent
, TUNER_NUM_PADS
,
481 ret
= media_device_register_entity(cfg
->mdev
, &dev
->ent
);
483 media_entity_cleanup(&dev
->ent
);
489 dev_info(&client
->dev
, "Silicon Labs %s successfully attached\n",
490 dev
->chiptype
== SI2157_CHIPTYPE_SI2141
? "Si2141" :
491 dev
->chiptype
== SI2157_CHIPTYPE_SI2146
?
492 "Si2146" : "Si2147/2148/2157/2158");
499 dev_dbg(&client
->dev
, "failed=%d\n", ret
);
503 static int si2157_remove(struct i2c_client
*client
)
505 struct si2157_dev
*dev
= i2c_get_clientdata(client
);
506 struct dvb_frontend
*fe
= dev
->fe
;
508 dev_dbg(&client
->dev
, "\n");
510 /* stop statistics polling */
511 cancel_delayed_work_sync(&dev
->stat_work
);
513 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
515 media_device_unregister_entity(&dev
->ent
);
518 memset(&fe
->ops
.tuner_ops
, 0, sizeof(struct dvb_tuner_ops
));
519 fe
->tuner_priv
= NULL
;
525 static const struct i2c_device_id si2157_id_table
[] = {
526 {"si2157", SI2157_CHIPTYPE_SI2157
},
527 {"si2146", SI2157_CHIPTYPE_SI2146
},
528 {"si2141", SI2157_CHIPTYPE_SI2141
},
531 MODULE_DEVICE_TABLE(i2c
, si2157_id_table
);
533 static struct i2c_driver si2157_driver
= {
536 .suppress_bind_attrs
= true,
538 .probe
= si2157_probe
,
539 .remove
= si2157_remove
,
540 .id_table
= si2157_id_table
,
543 module_i2c_driver(si2157_driver
);
545 MODULE_DESCRIPTION("Silicon Labs Si2141/Si2146/2147/2148/2157/2158 silicon tuner driver");
546 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
547 MODULE_LICENSE("GPL");
548 MODULE_FIRMWARE(SI2158_A20_FIRMWARE
);
549 MODULE_FIRMWARE(SI2141_A10_FIRMWARE
);