1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * drivers/mfd/si476x-cmd.c -- Subroutines implementing command
4 * protocol of si476x series of chips
5 *
6 * Copyright (C) 2012 Innovative Converged Devices(ICD)
7 * Copyright (C) 2013 Andrey Smirnov
8 *
9 * Author: Andrey Smirnov <andrew.smirnov@gmail.com>
10 */
11
12 #include <linux/module.h>
13 #include <linux/completion.h>
14 #include <linux/delay.h>
15 #include <linux/atomic.h>
16 #include <linux/i2c.h>
17 #include <linux/device.h>
18 #include <linux/gpio.h>
19 #include <linux/videodev2.h>
20
21 #include <linux/mfd/si476x-core.h>
22
23 #include <asm/unaligned.h>
24
25 #define msb(x) ((u8)((u16) x >> 8))
26 #define lsb(x) ((u8)((u16) x & 0x00FF))
27
28
29
30 #define CMD_POWER_UP 0x01
31 #define CMD_POWER_UP_A10_NRESP 1
32 #define CMD_POWER_UP_A10_NARGS 5
33
34 #define CMD_POWER_UP_A20_NRESP 1
35 #define CMD_POWER_UP_A20_NARGS 5
36
37 #define POWER_UP_DELAY_MS 110
38
39 #define CMD_POWER_DOWN 0x11
40 #define CMD_POWER_DOWN_A10_NRESP 1
41
42 #define CMD_POWER_DOWN_A20_NRESP 1
43 #define CMD_POWER_DOWN_A20_NARGS 1
44
45 #define CMD_FUNC_INFO 0x12
46 #define CMD_FUNC_INFO_NRESP 7
47
48 #define CMD_SET_PROPERTY 0x13
49 #define CMD_SET_PROPERTY_NARGS 5
50 #define CMD_SET_PROPERTY_NRESP 1
51
52 #define CMD_GET_PROPERTY 0x14
53 #define CMD_GET_PROPERTY_NARGS 3
54 #define CMD_GET_PROPERTY_NRESP 4
55
56 #define CMD_AGC_STATUS 0x17
57 #define CMD_AGC_STATUS_NRESP_A10 2
58 #define CMD_AGC_STATUS_NRESP_A20 6
59
60 #define PIN_CFG_BYTE(x) (0x7F & (x))
61 #define CMD_DIG_AUDIO_PIN_CFG 0x18
62 #define CMD_DIG_AUDIO_PIN_CFG_NARGS 4
63 #define CMD_DIG_AUDIO_PIN_CFG_NRESP 5
64
65 #define CMD_ZIF_PIN_CFG 0x19
66 #define CMD_ZIF_PIN_CFG_NARGS 4
67 #define CMD_ZIF_PIN_CFG_NRESP 5
68
69 #define CMD_IC_LINK_GPO_CTL_PIN_CFG 0x1A
70 #define CMD_IC_LINK_GPO_CTL_PIN_CFG_NARGS 4
71 #define CMD_IC_LINK_GPO_CTL_PIN_CFG_NRESP 5
72
73 #define CMD_ANA_AUDIO_PIN_CFG 0x1B
74 #define CMD_ANA_AUDIO_PIN_CFG_NARGS 1
75 #define CMD_ANA_AUDIO_PIN_CFG_NRESP 2
76
77 #define CMD_INTB_PIN_CFG 0x1C
78 #define CMD_INTB_PIN_CFG_NARGS 2
79 #define CMD_INTB_PIN_CFG_A10_NRESP 6
80 #define CMD_INTB_PIN_CFG_A20_NRESP 3
81
82 #define CMD_FM_TUNE_FREQ 0x30
83 #define CMD_FM_TUNE_FREQ_A10_NARGS 5
84 #define CMD_FM_TUNE_FREQ_A20_NARGS 3
85 #define CMD_FM_TUNE_FREQ_NRESP 1
86
87 #define CMD_FM_RSQ_STATUS 0x32
88
89 #define CMD_FM_RSQ_STATUS_A10_NARGS 1
90 #define CMD_FM_RSQ_STATUS_A10_NRESP 17
91 #define CMD_FM_RSQ_STATUS_A30_NARGS 1
92 #define CMD_FM_RSQ_STATUS_A30_NRESP 23
93
94
95 #define CMD_FM_SEEK_START 0x31
96 #define CMD_FM_SEEK_START_NARGS 1
97 #define CMD_FM_SEEK_START_NRESP 1
98
99 #define CMD_FM_RDS_STATUS 0x36
100 #define CMD_FM_RDS_STATUS_NARGS 1
101 #define CMD_FM_RDS_STATUS_NRESP 16
102
103 #define CMD_FM_RDS_BLOCKCOUNT 0x37
104 #define CMD_FM_RDS_BLOCKCOUNT_NARGS 1
105 #define CMD_FM_RDS_BLOCKCOUNT_NRESP 8
106
107 #define CMD_FM_PHASE_DIVERSITY 0x38
108 #define CMD_FM_PHASE_DIVERSITY_NARGS 1
109 #define CMD_FM_PHASE_DIVERSITY_NRESP 1
110
111 #define CMD_FM_PHASE_DIV_STATUS 0x39
112 #define CMD_FM_PHASE_DIV_STATUS_NRESP 2
113
114 #define CMD_AM_TUNE_FREQ 0x40
115 #define CMD_AM_TUNE_FREQ_NARGS 3
116 #define CMD_AM_TUNE_FREQ_NRESP 1
117
118 #define CMD_AM_RSQ_STATUS 0x42
119 #define CMD_AM_RSQ_STATUS_NARGS 1
120 #define CMD_AM_RSQ_STATUS_NRESP 13
121
122 #define CMD_AM_SEEK_START 0x41
123 #define CMD_AM_SEEK_START_NARGS 1
124 #define CMD_AM_SEEK_START_NRESP 1
125
126
127 #define CMD_AM_ACF_STATUS 0x45
128 #define CMD_AM_ACF_STATUS_NRESP 6
129 #define CMD_AM_ACF_STATUS_NARGS 1
130
131 #define CMD_FM_ACF_STATUS 0x35
132 #define CMD_FM_ACF_STATUS_NRESP 8
133 #define CMD_FM_ACF_STATUS_NARGS 1
134
135 #define CMD_MAX_ARGS_COUNT (10)
136
137
138 enum si476x_acf_status_report_bits {
139 SI476X_ACF_BLEND_INT = (1 << 4),
140 SI476X_ACF_HIBLEND_INT = (1 << 3),
141 SI476X_ACF_HICUT_INT = (1 << 2),
142 SI476X_ACF_CHBW_INT = (1 << 1),
143 SI476X_ACF_SOFTMUTE_INT = (1 << 0),
144
145 SI476X_ACF_SMUTE = (1 << 0),
146 SI476X_ACF_SMATTN = 0x1f,
147 SI476X_ACF_PILOT = (1 << 7),
148 SI476X_ACF_STBLEND = ~SI476X_ACF_PILOT,
149 };
150
151 enum si476x_agc_status_report_bits {
152 SI476X_AGC_MXHI = (1 << 5),
153 SI476X_AGC_MXLO = (1 << 4),
154 SI476X_AGC_LNAHI = (1 << 3),
155 SI476X_AGC_LNALO = (1 << 2),
156 };
157
158 enum si476x_errors {
159 SI476X_ERR_BAD_COMMAND = 0x10,
160 SI476X_ERR_BAD_ARG1 = 0x11,
161 SI476X_ERR_BAD_ARG2 = 0x12,
162 SI476X_ERR_BAD_ARG3 = 0x13,
163 SI476X_ERR_BAD_ARG4 = 0x14,
164 SI476X_ERR_BUSY = 0x18,
165 SI476X_ERR_BAD_INTERNAL_MEMORY = 0x20,
166 SI476X_ERR_BAD_PATCH = 0x30,
167 SI476X_ERR_BAD_BOOT_MODE = 0x31,
168 SI476X_ERR_BAD_PROPERTY = 0x40,
169 };
170
si476x_core_parse_and_nag_about_error(struct si476x_core * core)171 static int si476x_core_parse_and_nag_about_error(struct si476x_core *core)
172 {
173 int err;
174 char *cause;
175 u8 buffer[2];
176
177 if (core->revision != SI476X_REVISION_A10) {
178 err = si476x_core_i2c_xfer(core, SI476X_I2C_RECV,
179 buffer, sizeof(buffer));
180 if (err == sizeof(buffer)) {
181 switch (buffer[1]) {
182 case SI476X_ERR_BAD_COMMAND:
183 cause = "Bad command";
184 err = -EINVAL;
185 break;
186 case SI476X_ERR_BAD_ARG1:
187 cause = "Bad argument #1";
188 err = -EINVAL;
189 break;
190 case SI476X_ERR_BAD_ARG2:
191 cause = "Bad argument #2";
192 err = -EINVAL;
193 break;
194 case SI476X_ERR_BAD_ARG3:
195 cause = "Bad argument #3";
196 err = -EINVAL;
197 break;
198 case SI476X_ERR_BAD_ARG4:
199 cause = "Bad argument #4";
200 err = -EINVAL;
201 break;
202 case SI476X_ERR_BUSY:
203 cause = "Chip is busy";
204 err = -EBUSY;
205 break;
206 case SI476X_ERR_BAD_INTERNAL_MEMORY:
207 cause = "Bad internal memory";
208 err = -EIO;
209 break;
210 case SI476X_ERR_BAD_PATCH:
211 cause = "Bad patch";
212 err = -EINVAL;
213 break;
214 case SI476X_ERR_BAD_BOOT_MODE:
215 cause = "Bad boot mode";
216 err = -EINVAL;
217 break;
218 case SI476X_ERR_BAD_PROPERTY:
219 cause = "Bad property";
220 err = -EINVAL;
221 break;
222 default:
223 cause = "Unknown";
224 err = -EIO;
225 }
226
227 dev_err(&core->client->dev,
228 "[Chip error status]: %s\n", cause);
229 } else {
230 dev_err(&core->client->dev,
231 "Failed to fetch error code\n");
232 err = (err >= 0) ? -EIO : err;
233 }
234 } else {
235 err = -EIO;
236 }
237
238 return err;
239 }
240
241 /**
242 * si476x_core_send_command() - sends a command to si476x and waits its
243 * response
244 * @core: si476x_device structure for the device we are
245 * communicating with
246 * @command: command id
247 * @args: command arguments we are sending
248 * @argn: actual size of @args
249 * @resp: buffer to place the expected response from the device
250 * @respn: actual size of @resp
251 * @usecs: amount of time to wait before reading the response (in
252 * usecs)
253 *
254 * Function returns 0 on success and negative error code on
255 * failure
256 */
si476x_core_send_command(struct si476x_core * core,const u8 command,const u8 args[],const int argn,u8 resp[],const int respn,const int usecs)257 static int si476x_core_send_command(struct si476x_core *core,
258 const u8 command,
259 const u8 args[],
260 const int argn,
261 u8 resp[],
262 const int respn,
263 const int usecs)
264 {
265 struct i2c_client *client = core->client;
266 int err;
267 u8 data[CMD_MAX_ARGS_COUNT + 1];
268
269 if (argn > CMD_MAX_ARGS_COUNT) {
270 err = -ENOMEM;
271 goto exit;
272 }
273
274 if (!client->adapter) {
275 err = -ENODEV;
276 goto exit;
277 }
278
279 /* First send the command and its arguments */
280 data[0] = command;
281 memcpy(&data[1], args, argn);
282 dev_dbg(&client->dev, "Command:\n %*ph\n", argn + 1, data);
283
284 err = si476x_core_i2c_xfer(core, SI476X_I2C_SEND,
285 (char *) data, argn + 1);
286 if (err != argn + 1) {
287 dev_err(&core->client->dev,
288 "Error while sending command 0x%02x\n",
289 command);
290 err = (err >= 0) ? -EIO : err;
291 goto exit;
292 }
293 /* Set CTS to zero only after the command is send to avoid
294 * possible racing conditions when working in polling mode */
295 atomic_set(&core->cts, 0);
296
297 /* if (unlikely(command == CMD_POWER_DOWN) */
298 if (!wait_event_timeout(core->command,
299 atomic_read(&core->cts),
300 usecs_to_jiffies(usecs) + 1))
301 dev_warn(&core->client->dev,
302 "(%s) [CMD 0x%02x] Answer timeout.\n",
303 __func__, command);
304
305 /*
306 When working in polling mode, for some reason the tuner will
307 report CTS bit as being set in the first status byte read,
308 but all the consequtive ones will return zeros until the
309 tuner is actually completed the POWER_UP command. To
310 workaround that we wait for second CTS to be reported
311 */
312 if (unlikely(!core->client->irq && command == CMD_POWER_UP)) {
313 if (!wait_event_timeout(core->command,
314 atomic_read(&core->cts),
315 usecs_to_jiffies(usecs) + 1))
316 dev_warn(&core->client->dev,
317 "(%s) Power up took too much time.\n",
318 __func__);
319 }
320
321 /* Then get the response */
322 err = si476x_core_i2c_xfer(core, SI476X_I2C_RECV, resp, respn);
323 if (err != respn) {
324 dev_err(&core->client->dev,
325 "Error while reading response for command 0x%02x\n",
326 command);
327 err = (err >= 0) ? -EIO : err;
328 goto exit;
329 }
330 dev_dbg(&client->dev, "Response:\n %*ph\n", respn, resp);
331
332 err = 0;
333
334 if (resp[0] & SI476X_ERR) {
335 dev_err(&core->client->dev,
336 "[CMD 0x%02x] Chip set error flag\n", command);
337 err = si476x_core_parse_and_nag_about_error(core);
338 goto exit;
339 }
340
341 if (!(resp[0] & SI476X_CTS))
342 err = -EBUSY;
343 exit:
344 return err;
345 }
346
si476x_cmd_clear_stc(struct si476x_core * core)347 static int si476x_cmd_clear_stc(struct si476x_core *core)
348 {
349 int err;
350 struct si476x_rsq_status_args args = {
351 .primary = false,
352 .rsqack = false,
353 .attune = false,
354 .cancel = false,
355 .stcack = true,
356 };
357
358 switch (core->power_up_parameters.func) {
359 case SI476X_FUNC_FM_RECEIVER:
360 err = si476x_core_cmd_fm_rsq_status(core, &args, NULL);
361 break;
362 case SI476X_FUNC_AM_RECEIVER:
363 err = si476x_core_cmd_am_rsq_status(core, &args, NULL);
364 break;
365 default:
366 err = -EINVAL;
367 }
368
369 return err;
370 }
371
si476x_cmd_tune_seek_freq(struct si476x_core * core,uint8_t cmd,const uint8_t args[],size_t argn,uint8_t * resp,size_t respn)372 static int si476x_cmd_tune_seek_freq(struct si476x_core *core,
373 uint8_t cmd,
374 const uint8_t args[], size_t argn,
375 uint8_t *resp, size_t respn)
376 {
377 int err;
378
379
380 atomic_set(&core->stc, 0);
381 err = si476x_core_send_command(core, cmd, args, argn, resp, respn,
382 SI476X_TIMEOUT_TUNE);
383 if (!err) {
384 wait_event_killable(core->tuning,
385 atomic_read(&core->stc));
386 si476x_cmd_clear_stc(core);
387 }
388
389 return err;
390 }
391
392 /**
393 * si476x_core_cmd_func_info() - send 'FUNC_INFO' command to the device
394 * @core: device to send the command to
395 * @info: struct si476x_func_info to fill all the information
396 * returned by the command
397 *
398 * The command requests the firmware and patch version for currently
399 * loaded firmware (dependent on the function of the device FM/AM/WB)
400 *
401 * Function returns 0 on success and negative error code on
402 * failure
403 */
si476x_core_cmd_func_info(struct si476x_core * core,struct si476x_func_info * info)404 int si476x_core_cmd_func_info(struct si476x_core *core,
405 struct si476x_func_info *info)
406 {
407 int err;
408 u8 resp[CMD_FUNC_INFO_NRESP];
409
410 err = si476x_core_send_command(core, CMD_FUNC_INFO,
411 NULL, 0,
412 resp, ARRAY_SIZE(resp),
413 SI476X_DEFAULT_TIMEOUT);
414
415 info->firmware.major = resp[1];
416 info->firmware.minor[0] = resp[2];
417 info->firmware.minor[1] = resp[3];
418
419 info->patch_id = ((u16) resp[4] << 8) | resp[5];
420 info->func = resp[6];
421
422 return err;
423 }
424 EXPORT_SYMBOL_GPL(si476x_core_cmd_func_info);
425
426 /**
427 * si476x_core_cmd_set_property() - send 'SET_PROPERTY' command to the device
428 * @core: device to send the command to
429 * @property: property address
430 * @value: property value
431 *
432 * Function returns 0 on success and negative error code on
433 * failure
434 */
si476x_core_cmd_set_property(struct si476x_core * core,u16 property,u16 value)435 int si476x_core_cmd_set_property(struct si476x_core *core,
436 u16 property, u16 value)
437 {
438 u8 resp[CMD_SET_PROPERTY_NRESP];
439 const u8 args[CMD_SET_PROPERTY_NARGS] = {
440 0x00,
441 msb(property),
442 lsb(property),
443 msb(value),
444 lsb(value),
445 };
446
447 return si476x_core_send_command(core, CMD_SET_PROPERTY,
448 args, ARRAY_SIZE(args),
449 resp, ARRAY_SIZE(resp),
450 SI476X_DEFAULT_TIMEOUT);
451 }
452 EXPORT_SYMBOL_GPL(si476x_core_cmd_set_property);
453
454 /**
455 * si476x_core_cmd_get_property() - send 'GET_PROPERTY' command to the device
456 * @core: device to send the command to
457 * @property: property address
458 *
459 * Function return the value of property as u16 on success or a
460 * negative error on failure
461 */
si476x_core_cmd_get_property(struct si476x_core * core,u16 property)462 int si476x_core_cmd_get_property(struct si476x_core *core, u16 property)
463 {
464 int err;
465 u8 resp[CMD_GET_PROPERTY_NRESP];
466 const u8 args[CMD_GET_PROPERTY_NARGS] = {
467 0x00,
468 msb(property),
469 lsb(property),
470 };
471
472 err = si476x_core_send_command(core, CMD_GET_PROPERTY,
473 args, ARRAY_SIZE(args),
474 resp, ARRAY_SIZE(resp),
475 SI476X_DEFAULT_TIMEOUT);
476 if (err < 0)
477 return err;
478 else
479 return get_unaligned_be16(resp + 2);
480 }
481 EXPORT_SYMBOL_GPL(si476x_core_cmd_get_property);
482
483 /**
484 * si476x_core_cmd_dig_audio_pin_cfg() - send 'DIG_AUDIO_PIN_CFG' command to
485 * the device
486 * @core: device to send the command to
487 * @dclk: DCLK pin function configuration:
488 * #SI476X_DCLK_NOOP - do not modify the behaviour
489 * #SI476X_DCLK_TRISTATE - put the pin in tristate condition,
490 * enable 1MOhm pulldown
491 * #SI476X_DCLK_DAUDIO - set the pin to be a part of digital
492 * audio interface
493 * @dfs: DFS pin function configuration:
494 * #SI476X_DFS_NOOP - do not modify the behaviour
495 * #SI476X_DFS_TRISTATE - put the pin in tristate condition,
496 * enable 1MOhm pulldown
497 * SI476X_DFS_DAUDIO - set the pin to be a part of digital
498 * audio interface
499 * @dout: - DOUT pin function configuration:
500 * SI476X_DOUT_NOOP - do not modify the behaviour
501 * SI476X_DOUT_TRISTATE - put the pin in tristate condition,
502 * enable 1MOhm pulldown
503 * SI476X_DOUT_I2S_OUTPUT - set this pin to be digital out on I2S
504 * port 1
505 * SI476X_DOUT_I2S_INPUT - set this pin to be digital in on I2S
506 * port 1
507 * @xout: - XOUT pin function configuration:
508 * SI476X_XOUT_NOOP - do not modify the behaviour
509 * SI476X_XOUT_TRISTATE - put the pin in tristate condition,
510 * enable 1MOhm pulldown
511 * SI476X_XOUT_I2S_INPUT - set this pin to be digital in on I2S
512 * port 1
513 * SI476X_XOUT_MODE_SELECT - set this pin to be the input that
514 * selects the mode of the I2S audio
515 * combiner (analog or HD)
516 * [SI4761/63/65/67 Only]
517 *
518 * Function returns 0 on success and negative error code on failure
519 */
si476x_core_cmd_dig_audio_pin_cfg(struct si476x_core * core,enum si476x_dclk_config dclk,enum si476x_dfs_config dfs,enum si476x_dout_config dout,enum si476x_xout_config xout)520 int si476x_core_cmd_dig_audio_pin_cfg(struct si476x_core *core,
521 enum si476x_dclk_config dclk,
522 enum si476x_dfs_config dfs,
523 enum si476x_dout_config dout,
524 enum si476x_xout_config xout)
525 {
526 u8 resp[CMD_DIG_AUDIO_PIN_CFG_NRESP];
527 const u8 args[CMD_DIG_AUDIO_PIN_CFG_NARGS] = {
528 PIN_CFG_BYTE(dclk),
529 PIN_CFG_BYTE(dfs),
530 PIN_CFG_BYTE(dout),
531 PIN_CFG_BYTE(xout),
532 };
533
534 return si476x_core_send_command(core, CMD_DIG_AUDIO_PIN_CFG,
535 args, ARRAY_SIZE(args),
536 resp, ARRAY_SIZE(resp),
537 SI476X_DEFAULT_TIMEOUT);
538 }
539 EXPORT_SYMBOL_GPL(si476x_core_cmd_dig_audio_pin_cfg);
540
541 /**
542 * si476x_core_cmd_zif_pin_cfg - send 'ZIF_PIN_CFG_COMMAND'
543 * @core: - device to send the command to
544 * @iqclk: - IQCL pin function configuration:
545 * SI476X_IQCLK_NOOP - do not modify the behaviour
546 * SI476X_IQCLK_TRISTATE - put the pin in tristate condition,
547 * enable 1MOhm pulldown
548 * SI476X_IQCLK_IQ - set pin to be a part of I/Q interface
549 * in master mode
550 * @iqfs: - IQFS pin function configuration:
551 * SI476X_IQFS_NOOP - do not modify the behaviour
552 * SI476X_IQFS_TRISTATE - put the pin in tristate condition,
553 * enable 1MOhm pulldown
554 * SI476X_IQFS_IQ - set pin to be a part of I/Q interface
555 * in master mode
556 * @iout: - IOUT pin function configuration:
557 * SI476X_IOUT_NOOP - do not modify the behaviour
558 * SI476X_IOUT_TRISTATE - put the pin in tristate condition,
559 * enable 1MOhm pulldown
560 * SI476X_IOUT_OUTPUT - set pin to be I out
561 * @qout: - QOUT pin function configuration:
562 * SI476X_QOUT_NOOP - do not modify the behaviour
563 * SI476X_QOUT_TRISTATE - put the pin in tristate condition,
564 * enable 1MOhm pulldown
565 * SI476X_QOUT_OUTPUT - set pin to be Q out
566 *
567 * Function returns 0 on success and negative error code on failure
568 */
si476x_core_cmd_zif_pin_cfg(struct si476x_core * core,enum si476x_iqclk_config iqclk,enum si476x_iqfs_config iqfs,enum si476x_iout_config iout,enum si476x_qout_config qout)569 int si476x_core_cmd_zif_pin_cfg(struct si476x_core *core,
570 enum si476x_iqclk_config iqclk,
571 enum si476x_iqfs_config iqfs,
572 enum si476x_iout_config iout,
573 enum si476x_qout_config qout)
574 {
575 u8 resp[CMD_ZIF_PIN_CFG_NRESP];
576 const u8 args[CMD_ZIF_PIN_CFG_NARGS] = {
577 PIN_CFG_BYTE(iqclk),
578 PIN_CFG_BYTE(iqfs),
579 PIN_CFG_BYTE(iout),
580 PIN_CFG_BYTE(qout),
581 };
582
583 return si476x_core_send_command(core, CMD_ZIF_PIN_CFG,
584 args, ARRAY_SIZE(args),
585 resp, ARRAY_SIZE(resp),
586 SI476X_DEFAULT_TIMEOUT);
587 }
588 EXPORT_SYMBOL_GPL(si476x_core_cmd_zif_pin_cfg);
589
590 /**
591 * si476x_core_cmd_ic_link_gpo_ctl_pin_cfg - send
592 * 'IC_LINK_GPIO_CTL_PIN_CFG' command to the device
593 * @core: - device to send the command to
594 * @icin: - ICIN pin function configuration:
595 * SI476X_ICIN_NOOP - do not modify the behaviour
596 * SI476X_ICIN_TRISTATE - put the pin in tristate condition,
597 * enable 1MOhm pulldown
598 * SI476X_ICIN_GPO1_HIGH - set pin to be an output, drive it high
599 * SI476X_ICIN_GPO1_LOW - set pin to be an output, drive it low
600 * SI476X_ICIN_IC_LINK - set the pin to be a part of Inter-Chip link
601 * @icip: - ICIP pin function configuration:
602 * SI476X_ICIP_NOOP - do not modify the behaviour
603 * SI476X_ICIP_TRISTATE - put the pin in tristate condition,
604 * enable 1MOhm pulldown
605 * SI476X_ICIP_GPO1_HIGH - set pin to be an output, drive it high
606 * SI476X_ICIP_GPO1_LOW - set pin to be an output, drive it low
607 * SI476X_ICIP_IC_LINK - set the pin to be a part of Inter-Chip link
608 * @icon: - ICON pin function configuration:
609 * SI476X_ICON_NOOP - do not modify the behaviour
610 * SI476X_ICON_TRISTATE - put the pin in tristate condition,
611 * enable 1MOhm pulldown
612 * SI476X_ICON_I2S - set the pin to be a part of audio
613 * interface in slave mode (DCLK)
614 * SI476X_ICON_IC_LINK - set the pin to be a part of Inter-Chip link
615 * @icop: - ICOP pin function configuration:
616 * SI476X_ICOP_NOOP - do not modify the behaviour
617 * SI476X_ICOP_TRISTATE - put the pin in tristate condition,
618 * enable 1MOhm pulldown
619 * SI476X_ICOP_I2S - set the pin to be a part of audio
620 * interface in slave mode (DOUT)
621 * [Si4761/63/65/67 Only]
622 * SI476X_ICOP_IC_LINK - set the pin to be a part of Inter-Chip link
623 *
624 * Function returns 0 on success and negative error code on failure
625 */
si476x_core_cmd_ic_link_gpo_ctl_pin_cfg(struct si476x_core * core,enum si476x_icin_config icin,enum si476x_icip_config icip,enum si476x_icon_config icon,enum si476x_icop_config icop)626 int si476x_core_cmd_ic_link_gpo_ctl_pin_cfg(struct si476x_core *core,
627 enum si476x_icin_config icin,
628 enum si476x_icip_config icip,
629 enum si476x_icon_config icon,
630 enum si476x_icop_config icop)
631 {
632 u8 resp[CMD_IC_LINK_GPO_CTL_PIN_CFG_NRESP];
633 const u8 args[CMD_IC_LINK_GPO_CTL_PIN_CFG_NARGS] = {
634 PIN_CFG_BYTE(icin),
635 PIN_CFG_BYTE(icip),
636 PIN_CFG_BYTE(icon),
637 PIN_CFG_BYTE(icop),
638 };
639
640 return si476x_core_send_command(core, CMD_IC_LINK_GPO_CTL_PIN_CFG,
641 args, ARRAY_SIZE(args),
642 resp, ARRAY_SIZE(resp),
643 SI476X_DEFAULT_TIMEOUT);
644 }
645 EXPORT_SYMBOL_GPL(si476x_core_cmd_ic_link_gpo_ctl_pin_cfg);
646
647 /**
648 * si476x_core_cmd_ana_audio_pin_cfg - send 'ANA_AUDIO_PIN_CFG' to the
649 * device
650 * @core: - device to send the command to
651 * @lrout: - LROUT pin function configuration:
652 * SI476X_LROUT_NOOP - do not modify the behaviour
653 * SI476X_LROUT_TRISTATE - put the pin in tristate condition,
654 * enable 1MOhm pulldown
655 * SI476X_LROUT_AUDIO - set pin to be audio output
656 * SI476X_LROUT_MPX - set pin to be MPX output
657 *
658 * Function returns 0 on success and negative error code on failure
659 */
si476x_core_cmd_ana_audio_pin_cfg(struct si476x_core * core,enum si476x_lrout_config lrout)660 int si476x_core_cmd_ana_audio_pin_cfg(struct si476x_core *core,
661 enum si476x_lrout_config lrout)
662 {
663 u8 resp[CMD_ANA_AUDIO_PIN_CFG_NRESP];
664 const u8 args[CMD_ANA_AUDIO_PIN_CFG_NARGS] = {
665 PIN_CFG_BYTE(lrout),
666 };
667
668 return si476x_core_send_command(core, CMD_ANA_AUDIO_PIN_CFG,
669 args, ARRAY_SIZE(args),
670 resp, ARRAY_SIZE(resp),
671 SI476X_DEFAULT_TIMEOUT);
672 }
673 EXPORT_SYMBOL_GPL(si476x_core_cmd_ana_audio_pin_cfg);
674
675
676 /**
677 * si476x_core_cmd_intb_pin_cfg_a10 - send 'INTB_PIN_CFG' command to the device
678 * @core: - device to send the command to
679 * @intb: - INTB pin function configuration:
680 * SI476X_INTB_NOOP - do not modify the behaviour
681 * SI476X_INTB_TRISTATE - put the pin in tristate condition,
682 * enable 1MOhm pulldown
683 * SI476X_INTB_DAUDIO - set pin to be a part of digital
684 * audio interface in slave mode
685 * SI476X_INTB_IRQ - set pin to be an interrupt request line
686 * @a1: - A1 pin function configuration:
687 * SI476X_A1_NOOP - do not modify the behaviour
688 * SI476X_A1_TRISTATE - put the pin in tristate condition,
689 * enable 1MOhm pulldown
690 * SI476X_A1_IRQ - set pin to be an interrupt request line
691 *
692 * Function returns 0 on success and negative error code on failure
693 */
si476x_core_cmd_intb_pin_cfg_a10(struct si476x_core * core,enum si476x_intb_config intb,enum si476x_a1_config a1)694 static int si476x_core_cmd_intb_pin_cfg_a10(struct si476x_core *core,
695 enum si476x_intb_config intb,
696 enum si476x_a1_config a1)
697 {
698 u8 resp[CMD_INTB_PIN_CFG_A10_NRESP];
699 const u8 args[CMD_INTB_PIN_CFG_NARGS] = {
700 PIN_CFG_BYTE(intb),
701 PIN_CFG_BYTE(a1),
702 };
703
704 return si476x_core_send_command(core, CMD_INTB_PIN_CFG,
705 args, ARRAY_SIZE(args),
706 resp, ARRAY_SIZE(resp),
707 SI476X_DEFAULT_TIMEOUT);
708 }
709
si476x_core_cmd_intb_pin_cfg_a20(struct si476x_core * core,enum si476x_intb_config intb,enum si476x_a1_config a1)710 static int si476x_core_cmd_intb_pin_cfg_a20(struct si476x_core *core,
711 enum si476x_intb_config intb,
712 enum si476x_a1_config a1)
713 {
714 u8 resp[CMD_INTB_PIN_CFG_A20_NRESP];
715 const u8 args[CMD_INTB_PIN_CFG_NARGS] = {
716 PIN_CFG_BYTE(intb),
717 PIN_CFG_BYTE(a1),
718 };
719
720 return si476x_core_send_command(core, CMD_INTB_PIN_CFG,
721 args, ARRAY_SIZE(args),
722 resp, ARRAY_SIZE(resp),
723 SI476X_DEFAULT_TIMEOUT);
724 }
725
726
727
728 /**
729 * si476x_core_cmd_am_rsq_status - send 'AM_RSQ_STATUS' command to the
730 * device
731 * @core: - device to send the command to
732 * @rsqargs: - pointer to a structure containing a group of sub-args
733 * relevant to sending the RSQ status command
734 * @report: - all signal quality information returned by the command
735 * (if NULL then the output of the command is ignored)
736 *
737 * Function returns 0 on success and negative error code on failure
738 */
si476x_core_cmd_am_rsq_status(struct si476x_core * core,struct si476x_rsq_status_args * rsqargs,struct si476x_rsq_status_report * report)739 int si476x_core_cmd_am_rsq_status(struct si476x_core *core,
740 struct si476x_rsq_status_args *rsqargs,
741 struct si476x_rsq_status_report *report)
742 {
743 int err;
744 u8 resp[CMD_AM_RSQ_STATUS_NRESP];
745 const u8 args[CMD_AM_RSQ_STATUS_NARGS] = {
746 rsqargs->rsqack << 3 | rsqargs->attune << 2 |
747 rsqargs->cancel << 1 | rsqargs->stcack,
748 };
749
750 err = si476x_core_send_command(core, CMD_AM_RSQ_STATUS,
751 args, ARRAY_SIZE(args),
752 resp, ARRAY_SIZE(resp),
753 SI476X_DEFAULT_TIMEOUT);
754 /*
755 * Besides getting received signal quality information this
756 * command can be used to just acknowledge different interrupt
757 * flags in those cases it is useless to copy and parse
758 * received data so user can pass NULL, and thus avoid
759 * unnecessary copying.
760 */
761 if (!report)
762 return err;
763
764 report->snrhint = 0x08 & resp[1];
765 report->snrlint = 0x04 & resp[1];
766 report->rssihint = 0x02 & resp[1];
767 report->rssilint = 0x01 & resp[1];
768
769 report->bltf = 0x80 & resp[2];
770 report->snr_ready = 0x20 & resp[2];
771 report->rssiready = 0x08 & resp[2];
772 report->afcrl = 0x02 & resp[2];
773 report->valid = 0x01 & resp[2];
774
775 report->readfreq = get_unaligned_be16(resp + 3);
776 report->freqoff = resp[5];
777 report->rssi = resp[6];
778 report->snr = resp[7];
779 report->lassi = resp[9];
780 report->hassi = resp[10];
781 report->mult = resp[11];
782 report->dev = resp[12];
783
784 return err;
785 }
786 EXPORT_SYMBOL_GPL(si476x_core_cmd_am_rsq_status);
787
si476x_core_cmd_fm_acf_status(struct si476x_core * core,struct si476x_acf_status_report * report)788 int si476x_core_cmd_fm_acf_status(struct si476x_core *core,
789 struct si476x_acf_status_report *report)
790 {
791 int err;
792 u8 resp[CMD_FM_ACF_STATUS_NRESP];
793 const u8 args[CMD_FM_ACF_STATUS_NARGS] = {
794 0x0,
795 };
796
797 if (!report)
798 return -EINVAL;
799
800 err = si476x_core_send_command(core, CMD_FM_ACF_STATUS,
801 args, ARRAY_SIZE(args),
802 resp, ARRAY_SIZE(resp),
803 SI476X_DEFAULT_TIMEOUT);
804 if (err < 0)
805 return err;
806
807 report->blend_int = resp[1] & SI476X_ACF_BLEND_INT;
808 report->hblend_int = resp[1] & SI476X_ACF_HIBLEND_INT;
809 report->hicut_int = resp[1] & SI476X_ACF_HICUT_INT;
810 report->chbw_int = resp[1] & SI476X_ACF_CHBW_INT;
811 report->softmute_int = resp[1] & SI476X_ACF_SOFTMUTE_INT;
812 report->smute = resp[2] & SI476X_ACF_SMUTE;
813 report->smattn = resp[3] & SI476X_ACF_SMATTN;
814 report->chbw = resp[4];
815 report->hicut = resp[5];
816 report->hiblend = resp[6];
817 report->pilot = resp[7] & SI476X_ACF_PILOT;
818 report->stblend = resp[7] & SI476X_ACF_STBLEND;
819
820 return err;
821 }
822 EXPORT_SYMBOL_GPL(si476x_core_cmd_fm_acf_status);
823
si476x_core_cmd_am_acf_status(struct si476x_core * core,struct si476x_acf_status_report * report)824 int si476x_core_cmd_am_acf_status(struct si476x_core *core,
825 struct si476x_acf_status_report *report)
826 {
827 int err;
828 u8 resp[CMD_AM_ACF_STATUS_NRESP];
829 const u8 args[CMD_AM_ACF_STATUS_NARGS] = {
830 0x0,
831 };
832
833 if (!report)
834 return -EINVAL;
835
836 err = si476x_core_send_command(core, CMD_AM_ACF_STATUS,
837 args, ARRAY_SIZE(args),
838 resp, ARRAY_SIZE(resp),
839 SI476X_DEFAULT_TIMEOUT);
840 if (err < 0)
841 return err;
842
843 report->blend_int = resp[1] & SI476X_ACF_BLEND_INT;
844 report->hblend_int = resp[1] & SI476X_ACF_HIBLEND_INT;
845 report->hicut_int = resp[1] & SI476X_ACF_HICUT_INT;
846 report->chbw_int = resp[1] & SI476X_ACF_CHBW_INT;
847 report->softmute_int = resp[1] & SI476X_ACF_SOFTMUTE_INT;
848 report->smute = resp[2] & SI476X_ACF_SMUTE;
849 report->smattn = resp[3] & SI476X_ACF_SMATTN;
850 report->chbw = resp[4];
851 report->hicut = resp[5];
852
853 return err;
854 }
855 EXPORT_SYMBOL_GPL(si476x_core_cmd_am_acf_status);
856
857
858 /**
859 * si476x_core_cmd_fm_seek_start - send 'FM_SEEK_START' command to the
860 * device
861 * @core: - device to send the command to
862 * @seekup: - if set the direction of the search is 'up'
863 * @wrap: - if set seek wraps when hitting band limit
864 *
865 * This function begins search for a valid station. The station is
866 * considered valid when 'FM_VALID_SNR_THRESHOLD' and
867 * 'FM_VALID_RSSI_THRESHOLD' and 'FM_VALID_MAX_TUNE_ERROR' criteria
868 * are met.
869 } *
870 * Function returns 0 on success and negative error code on failure
871 */
si476x_core_cmd_fm_seek_start(struct si476x_core * core,bool seekup,bool wrap)872 int si476x_core_cmd_fm_seek_start(struct si476x_core *core,
873 bool seekup, bool wrap)
874 {
875 u8 resp[CMD_FM_SEEK_START_NRESP];
876 const u8 args[CMD_FM_SEEK_START_NARGS] = {
877 seekup << 3 | wrap << 2,
878 };
879
880 return si476x_cmd_tune_seek_freq(core, CMD_FM_SEEK_START,
881 args, sizeof(args),
882 resp, sizeof(resp));
883 }
884 EXPORT_SYMBOL_GPL(si476x_core_cmd_fm_seek_start);
885
886 /**
887 * si476x_core_cmd_fm_rds_status - send 'FM_RDS_STATUS' command to the
888 * device
889 * @core: - device to send the command to
890 * @status_only: - if set the data is not removed from RDSFIFO,
891 * RDSFIFOUSED is not decremented and data in all the
892 * rest RDS data contains the last valid info received
893 * @mtfifo: if set the command clears RDS receive FIFO
894 * @intack: if set the command clards the RDSINT bit.
895 * @report: - all signal quality information returned by the command
896 * (if NULL then the output of the command is ignored)
897 *
898 * Function returns 0 on success and negative error code on failure
899 */
si476x_core_cmd_fm_rds_status(struct si476x_core * core,bool status_only,bool mtfifo,bool intack,struct si476x_rds_status_report * report)900 int si476x_core_cmd_fm_rds_status(struct si476x_core *core,
901 bool status_only,
902 bool mtfifo,
903 bool intack,
904 struct si476x_rds_status_report *report)
905 {
906 int err;
907 u8 resp[CMD_FM_RDS_STATUS_NRESP];
908 const u8 args[CMD_FM_RDS_STATUS_NARGS] = {
909 status_only << 2 | mtfifo << 1 | intack,
910 };
911
912 err = si476x_core_send_command(core, CMD_FM_RDS_STATUS,
913 args, ARRAY_SIZE(args),
914 resp, ARRAY_SIZE(resp),
915 SI476X_DEFAULT_TIMEOUT);
916 /*
917 * Besides getting RDS status information this command can be
918 * used to just acknowledge different interrupt flags in those
919 * cases it is useless to copy and parse received data so user
920 * can pass NULL, and thus avoid unnecessary copying.
921 */
922 if (err < 0 || report == NULL)
923 return err;
924
925 report->rdstpptyint = 0x10 & resp[1];
926 report->rdspiint = 0x08 & resp[1];
927 report->rdssyncint = 0x02 & resp[1];
928 report->rdsfifoint = 0x01 & resp[1];
929
930 report->tpptyvalid = 0x10 & resp[2];
931 report->pivalid = 0x08 & resp[2];
932 report->rdssync = 0x02 & resp[2];
933 report->rdsfifolost = 0x01 & resp[2];
934
935 report->tp = 0x20 & resp[3];
936 report->pty = 0x1f & resp[3];
937
938 report->pi = get_unaligned_be16(resp + 4);
939 report->rdsfifoused = resp[6];
940
941 report->ble[V4L2_RDS_BLOCK_A] = 0xc0 & resp[7];
942 report->ble[V4L2_RDS_BLOCK_B] = 0x30 & resp[7];
943 report->ble[V4L2_RDS_BLOCK_C] = 0x0c & resp[7];
944 report->ble[V4L2_RDS_BLOCK_D] = 0x03 & resp[7];
945
946 report->rds[V4L2_RDS_BLOCK_A].block = V4L2_RDS_BLOCK_A;
947 report->rds[V4L2_RDS_BLOCK_A].msb = resp[8];
948 report->rds[V4L2_RDS_BLOCK_A].lsb = resp[9];
949
950 report->rds[V4L2_RDS_BLOCK_B].block = V4L2_RDS_BLOCK_B;
951 report->rds[V4L2_RDS_BLOCK_B].msb = resp[10];
952 report->rds[V4L2_RDS_BLOCK_B].lsb = resp[11];
953
954 report->rds[V4L2_RDS_BLOCK_C].block = V4L2_RDS_BLOCK_C;
955 report->rds[V4L2_RDS_BLOCK_C].msb = resp[12];
956 report->rds[V4L2_RDS_BLOCK_C].lsb = resp[13];
957
958 report->rds[V4L2_RDS_BLOCK_D].block = V4L2_RDS_BLOCK_D;
959 report->rds[V4L2_RDS_BLOCK_D].msb = resp[14];
960 report->rds[V4L2_RDS_BLOCK_D].lsb = resp[15];
961
962 return err;
963 }
964 EXPORT_SYMBOL_GPL(si476x_core_cmd_fm_rds_status);
965
si476x_core_cmd_fm_rds_blockcount(struct si476x_core * core,bool clear,struct si476x_rds_blockcount_report * report)966 int si476x_core_cmd_fm_rds_blockcount(struct si476x_core *core,
967 bool clear,
968 struct si476x_rds_blockcount_report *report)
969 {
970 int err;
971 u8 resp[CMD_FM_RDS_BLOCKCOUNT_NRESP];
972 const u8 args[CMD_FM_RDS_BLOCKCOUNT_NARGS] = {
973 clear,
974 };
975
976 if (!report)
977 return -EINVAL;
978
979 err = si476x_core_send_command(core, CMD_FM_RDS_BLOCKCOUNT,
980 args, ARRAY_SIZE(args),
981 resp, ARRAY_SIZE(resp),
982 SI476X_DEFAULT_TIMEOUT);
983
984 if (!err) {
985 report->expected = get_unaligned_be16(resp + 2);
986 report->received = get_unaligned_be16(resp + 4);
987 report->uncorrectable = get_unaligned_be16(resp + 6);
988 }
989
990 return err;
991 }
992 EXPORT_SYMBOL_GPL(si476x_core_cmd_fm_rds_blockcount);
993
si476x_core_cmd_fm_phase_diversity(struct si476x_core * core,enum si476x_phase_diversity_mode mode)994 int si476x_core_cmd_fm_phase_diversity(struct si476x_core *core,
995 enum si476x_phase_diversity_mode mode)
996 {
997 u8 resp[CMD_FM_PHASE_DIVERSITY_NRESP];
998 const u8 args[CMD_FM_PHASE_DIVERSITY_NARGS] = {
999 mode & 0x07,
1000 };
1001
1002 return si476x_core_send_command(core, CMD_FM_PHASE_DIVERSITY,
1003 args, ARRAY_SIZE(args),
1004 resp, ARRAY_SIZE(resp),
1005 SI476X_DEFAULT_TIMEOUT);
1006 }
1007 EXPORT_SYMBOL_GPL(si476x_core_cmd_fm_phase_diversity);
1008 /**
1009 * si476x_core_cmd_fm_phase_div_status() - get the phase diversity
1010 * status
1011 *
1012 * @core: si476x device
1013 *
1014 * NOTE caller must hold core lock
1015 *
1016 * Function returns the value of the status bit in case of success and
1017 * negative error code in case of failure.
1018 */
si476x_core_cmd_fm_phase_div_status(struct si476x_core * core)1019 int si476x_core_cmd_fm_phase_div_status(struct si476x_core *core)
1020 {
1021 int err;
1022 u8 resp[CMD_FM_PHASE_DIV_STATUS_NRESP];
1023
1024 err = si476x_core_send_command(core, CMD_FM_PHASE_DIV_STATUS,
1025 NULL, 0,
1026 resp, ARRAY_SIZE(resp),
1027 SI476X_DEFAULT_TIMEOUT);
1028
1029 return (err < 0) ? err : resp[1];
1030 }
1031 EXPORT_SYMBOL_GPL(si476x_core_cmd_fm_phase_div_status);
1032
1033
1034 /**
1035 * si476x_core_cmd_am_seek_start - send 'FM_SEEK_START' command to the
1036 * device
1037 * @core: - device to send the command to
1038 * @seekup: - if set the direction of the search is 'up'
1039 * @wrap: - if set seek wraps when hitting band limit
1040 *
1041 * This function begins search for a valid station. The station is
1042 * considered valid when 'FM_VALID_SNR_THRESHOLD' and
1043 * 'FM_VALID_RSSI_THRESHOLD' and 'FM_VALID_MAX_TUNE_ERROR' criteria
1044 * are met.
1045 *
1046 * Function returns 0 on success and negative error code on failure
1047 */
si476x_core_cmd_am_seek_start(struct si476x_core * core,bool seekup,bool wrap)1048 int si476x_core_cmd_am_seek_start(struct si476x_core *core,
1049 bool seekup, bool wrap)
1050 {
1051 u8 resp[CMD_AM_SEEK_START_NRESP];
1052 const u8 args[CMD_AM_SEEK_START_NARGS] = {
1053 seekup << 3 | wrap << 2,
1054 };
1055
1056 return si476x_cmd_tune_seek_freq(core, CMD_AM_SEEK_START,
1057 args, sizeof(args),
1058 resp, sizeof(resp));
1059 }
1060 EXPORT_SYMBOL_GPL(si476x_core_cmd_am_seek_start);
1061
1062
1063
si476x_core_cmd_power_up_a10(struct si476x_core * core,struct si476x_power_up_args * puargs)1064 static int si476x_core_cmd_power_up_a10(struct si476x_core *core,
1065 struct si476x_power_up_args *puargs)
1066 {
1067 u8 resp[CMD_POWER_UP_A10_NRESP];
1068 const bool intsel = (core->pinmux.a1 == SI476X_A1_IRQ);
1069 const bool ctsen = (core->client->irq != 0);
1070 const u8 args[CMD_POWER_UP_A10_NARGS] = {
1071 0xF7, /* Reserved, always 0xF7 */
1072 0x3F & puargs->xcload, /* First two bits are reserved to be
1073 * zeros */
1074 ctsen << 7 | intsel << 6 | 0x07, /* Last five bits
1075 * are reserved to
1076 * be written as 0x7 */
1077 puargs->func << 4 | puargs->freq,
1078 0x11, /* Reserved, always 0x11 */
1079 };
1080
1081 return si476x_core_send_command(core, CMD_POWER_UP,
1082 args, ARRAY_SIZE(args),
1083 resp, ARRAY_SIZE(resp),
1084 SI476X_TIMEOUT_POWER_UP);
1085 }
1086
si476x_core_cmd_power_up_a20(struct si476x_core * core,struct si476x_power_up_args * puargs)1087 static int si476x_core_cmd_power_up_a20(struct si476x_core *core,
1088 struct si476x_power_up_args *puargs)
1089 {
1090 u8 resp[CMD_POWER_UP_A20_NRESP];
1091 const bool intsel = (core->pinmux.a1 == SI476X_A1_IRQ);
1092 const bool ctsen = (core->client->irq != 0);
1093 const u8 args[CMD_POWER_UP_A20_NARGS] = {
1094 puargs->ibias6x << 7 | puargs->xstart,
1095 0x3F & puargs->xcload, /* First two bits are reserved to be
1096 * zeros */
1097 ctsen << 7 | intsel << 6 | puargs->fastboot << 5 |
1098 puargs->xbiashc << 3 | puargs->xbias,
1099 puargs->func << 4 | puargs->freq,
1100 0x10 | puargs->xmode,
1101 };
1102
1103 return si476x_core_send_command(core, CMD_POWER_UP,
1104 args, ARRAY_SIZE(args),
1105 resp, ARRAY_SIZE(resp),
1106 SI476X_TIMEOUT_POWER_UP);
1107 }
1108
si476x_core_cmd_power_down_a10(struct si476x_core * core,struct si476x_power_down_args * pdargs)1109 static int si476x_core_cmd_power_down_a10(struct si476x_core *core,
1110 struct si476x_power_down_args *pdargs)
1111 {
1112 u8 resp[CMD_POWER_DOWN_A10_NRESP];
1113
1114 return si476x_core_send_command(core, CMD_POWER_DOWN,
1115 NULL, 0,
1116 resp, ARRAY_SIZE(resp),
1117 SI476X_DEFAULT_TIMEOUT);
1118 }
1119
si476x_core_cmd_power_down_a20(struct si476x_core * core,struct si476x_power_down_args * pdargs)1120 static int si476x_core_cmd_power_down_a20(struct si476x_core *core,
1121 struct si476x_power_down_args *pdargs)
1122 {
1123 u8 resp[CMD_POWER_DOWN_A20_NRESP];
1124 const u8 args[CMD_POWER_DOWN_A20_NARGS] = {
1125 pdargs->xosc,
1126 };
1127 return si476x_core_send_command(core, CMD_POWER_DOWN,
1128 args, ARRAY_SIZE(args),
1129 resp, ARRAY_SIZE(resp),
1130 SI476X_DEFAULT_TIMEOUT);
1131 }
1132
si476x_core_cmd_am_tune_freq_a10(struct si476x_core * core,struct si476x_tune_freq_args * tuneargs)1133 static int si476x_core_cmd_am_tune_freq_a10(struct si476x_core *core,
1134 struct si476x_tune_freq_args *tuneargs)
1135 {
1136
1137 const int am_freq = tuneargs->freq;
1138 u8 resp[CMD_AM_TUNE_FREQ_NRESP];
1139 const u8 args[CMD_AM_TUNE_FREQ_NARGS] = {
1140 (tuneargs->hd << 6),
1141 msb(am_freq),
1142 lsb(am_freq),
1143 };
1144
1145 return si476x_cmd_tune_seek_freq(core, CMD_AM_TUNE_FREQ, args,
1146 sizeof(args),
1147 resp, sizeof(resp));
1148 }
1149
si476x_core_cmd_am_tune_freq_a20(struct si476x_core * core,struct si476x_tune_freq_args * tuneargs)1150 static int si476x_core_cmd_am_tune_freq_a20(struct si476x_core *core,
1151 struct si476x_tune_freq_args *tuneargs)
1152 {
1153 const int am_freq = tuneargs->freq;
1154 u8 resp[CMD_AM_TUNE_FREQ_NRESP];
1155 const u8 args[CMD_AM_TUNE_FREQ_NARGS] = {
1156 (tuneargs->zifsr << 6) | (tuneargs->injside & 0x03),
1157 msb(am_freq),
1158 lsb(am_freq),
1159 };
1160
1161 return si476x_cmd_tune_seek_freq(core, CMD_AM_TUNE_FREQ,
1162 args, sizeof(args),
1163 resp, sizeof(resp));
1164 }
1165
si476x_core_cmd_fm_rsq_status_a10(struct si476x_core * core,struct si476x_rsq_status_args * rsqargs,struct si476x_rsq_status_report * report)1166 static int si476x_core_cmd_fm_rsq_status_a10(struct si476x_core *core,
1167 struct si476x_rsq_status_args *rsqargs,
1168 struct si476x_rsq_status_report *report)
1169 {
1170 int err;
1171 u8 resp[CMD_FM_RSQ_STATUS_A10_NRESP];
1172 const u8 args[CMD_FM_RSQ_STATUS_A10_NARGS] = {
1173 rsqargs->rsqack << 3 | rsqargs->attune << 2 |
1174 rsqargs->cancel << 1 | rsqargs->stcack,
1175 };
1176
1177 err = si476x_core_send_command(core, CMD_FM_RSQ_STATUS,
1178 args, ARRAY_SIZE(args),
1179 resp, ARRAY_SIZE(resp),
1180 SI476X_DEFAULT_TIMEOUT);
1181 /*
1182 * Besides getting received signal quality information this
1183 * command can be used to just acknowledge different interrupt
1184 * flags in those cases it is useless to copy and parse
1185 * received data so user can pass NULL, and thus avoid
1186 * unnecessary copying.
1187 */
1188 if (err < 0 || report == NULL)
1189 return err;
1190
1191 report->multhint = 0x80 & resp[1];
1192 report->multlint = 0x40 & resp[1];
1193 report->snrhint = 0x08 & resp[1];
1194 report->snrlint = 0x04 & resp[1];
1195 report->rssihint = 0x02 & resp[1];
1196 report->rssilint = 0x01 & resp[1];
1197
1198 report->bltf = 0x80 & resp[2];
1199 report->snr_ready = 0x20 & resp[2];
1200 report->rssiready = 0x08 & resp[2];
1201 report->afcrl = 0x02 & resp[2];
1202 report->valid = 0x01 & resp[2];
1203
1204 report->readfreq = get_unaligned_be16(resp + 3);
1205 report->freqoff = resp[5];
1206 report->rssi = resp[6];
1207 report->snr = resp[7];
1208 report->lassi = resp[9];
1209 report->hassi = resp[10];
1210 report->mult = resp[11];
1211 report->dev = resp[12];
1212 report->readantcap = get_unaligned_be16(resp + 13);
1213 report->assi = resp[15];
1214 report->usn = resp[16];
1215
1216 return err;
1217 }
1218
si476x_core_cmd_fm_rsq_status_a20(struct si476x_core * core,struct si476x_rsq_status_args * rsqargs,struct si476x_rsq_status_report * report)1219 static int si476x_core_cmd_fm_rsq_status_a20(struct si476x_core *core,
1220 struct si476x_rsq_status_args *rsqargs,
1221 struct si476x_rsq_status_report *report)
1222 {
1223 int err;
1224 u8 resp[CMD_FM_RSQ_STATUS_A10_NRESP];
1225 const u8 args[CMD_FM_RSQ_STATUS_A30_NARGS] = {
1226 rsqargs->primary << 4 | rsqargs->rsqack << 3 |
1227 rsqargs->attune << 2 | rsqargs->cancel << 1 |
1228 rsqargs->stcack,
1229 };
1230
1231 err = si476x_core_send_command(core, CMD_FM_RSQ_STATUS,
1232 args, ARRAY_SIZE(args),
1233 resp, ARRAY_SIZE(resp),
1234 SI476X_DEFAULT_TIMEOUT);
1235 /*
1236 * Besides getting received signal quality information this
1237 * command can be used to just acknowledge different interrupt
1238 * flags in those cases it is useless to copy and parse
1239 * received data so user can pass NULL, and thus avoid
1240 * unnecessary copying.
1241 */
1242 if (err < 0 || report == NULL)
1243 return err;
1244
1245 report->multhint = 0x80 & resp[1];
1246 report->multlint = 0x40 & resp[1];
1247 report->snrhint = 0x08 & resp[1];
1248 report->snrlint = 0x04 & resp[1];
1249 report->rssihint = 0x02 & resp[1];
1250 report->rssilint = 0x01 & resp[1];
1251
1252 report->bltf = 0x80 & resp[2];
1253 report->snr_ready = 0x20 & resp[2];
1254 report->rssiready = 0x08 & resp[2];
1255 report->afcrl = 0x02 & resp[2];
1256 report->valid = 0x01 & resp[2];
1257
1258 report->readfreq = get_unaligned_be16(resp + 3);
1259 report->freqoff = resp[5];
1260 report->rssi = resp[6];
1261 report->snr = resp[7];
1262 report->lassi = resp[9];
1263 report->hassi = resp[10];
1264 report->mult = resp[11];
1265 report->dev = resp[12];
1266 report->readantcap = get_unaligned_be16(resp + 13);
1267 report->assi = resp[15];
1268 report->usn = resp[16];
1269
1270 return err;
1271 }
1272
1273
si476x_core_cmd_fm_rsq_status_a30(struct si476x_core * core,struct si476x_rsq_status_args * rsqargs,struct si476x_rsq_status_report * report)1274 static int si476x_core_cmd_fm_rsq_status_a30(struct si476x_core *core,
1275 struct si476x_rsq_status_args *rsqargs,
1276 struct si476x_rsq_status_report *report)
1277 {
1278 int err;
1279 u8 resp[CMD_FM_RSQ_STATUS_A30_NRESP];
1280 const u8 args[CMD_FM_RSQ_STATUS_A30_NARGS] = {
1281 rsqargs->primary << 4 | rsqargs->rsqack << 3 |
1282 rsqargs->attune << 2 | rsqargs->cancel << 1 |
1283 rsqargs->stcack,
1284 };
1285
1286 err = si476x_core_send_command(core, CMD_FM_RSQ_STATUS,
1287 args, ARRAY_SIZE(args),
1288 resp, ARRAY_SIZE(resp),
1289 SI476X_DEFAULT_TIMEOUT);
1290 /*
1291 * Besides getting received signal quality information this
1292 * command can be used to just acknowledge different interrupt
1293 * flags in those cases it is useless to copy and parse
1294 * received data so user can pass NULL, and thus avoid
1295 * unnecessary copying.
1296 */
1297 if (err < 0 || report == NULL)
1298 return err;
1299
1300 report->multhint = 0x80 & resp[1];
1301 report->multlint = 0x40 & resp[1];
1302 report->snrhint = 0x08 & resp[1];
1303 report->snrlint = 0x04 & resp[1];
1304 report->rssihint = 0x02 & resp[1];
1305 report->rssilint = 0x01 & resp[1];
1306
1307 report->bltf = 0x80 & resp[2];
1308 report->snr_ready = 0x20 & resp[2];
1309 report->rssiready = 0x08 & resp[2];
1310 report->injside = 0x04 & resp[2];
1311 report->afcrl = 0x02 & resp[2];
1312 report->valid = 0x01 & resp[2];
1313
1314 report->readfreq = get_unaligned_be16(resp + 3);
1315 report->freqoff = resp[5];
1316 report->rssi = resp[6];
1317 report->snr = resp[7];
1318 report->issi = resp[8];
1319 report->lassi = resp[9];
1320 report->hassi = resp[10];
1321 report->mult = resp[11];
1322 report->dev = resp[12];
1323 report->readantcap = get_unaligned_be16(resp + 13);
1324 report->assi = resp[15];
1325 report->usn = resp[16];
1326
1327 report->pilotdev = resp[17];
1328 report->rdsdev = resp[18];
1329 report->assidev = resp[19];
1330 report->strongdev = resp[20];
1331 report->rdspi = get_unaligned_be16(resp + 21);
1332
1333 return err;
1334 }
1335
si476x_core_cmd_fm_tune_freq_a10(struct si476x_core * core,struct si476x_tune_freq_args * tuneargs)1336 static int si476x_core_cmd_fm_tune_freq_a10(struct si476x_core *core,
1337 struct si476x_tune_freq_args *tuneargs)
1338 {
1339 u8 resp[CMD_FM_TUNE_FREQ_NRESP];
1340 const u8 args[CMD_FM_TUNE_FREQ_A10_NARGS] = {
1341 (tuneargs->hd << 6) | (tuneargs->tunemode << 4)
1342 | (tuneargs->smoothmetrics << 2),
1343 msb(tuneargs->freq),
1344 lsb(tuneargs->freq),
1345 msb(tuneargs->antcap),
1346 lsb(tuneargs->antcap)
1347 };
1348
1349 return si476x_cmd_tune_seek_freq(core, CMD_FM_TUNE_FREQ,
1350 args, sizeof(args),
1351 resp, sizeof(resp));
1352 }
1353
si476x_core_cmd_fm_tune_freq_a20(struct si476x_core * core,struct si476x_tune_freq_args * tuneargs)1354 static int si476x_core_cmd_fm_tune_freq_a20(struct si476x_core *core,
1355 struct si476x_tune_freq_args *tuneargs)
1356 {
1357 u8 resp[CMD_FM_TUNE_FREQ_NRESP];
1358 const u8 args[CMD_FM_TUNE_FREQ_A20_NARGS] = {
1359 (tuneargs->hd << 6) | (tuneargs->tunemode << 4)
1360 | (tuneargs->smoothmetrics << 2) | (tuneargs->injside),
1361 msb(tuneargs->freq),
1362 lsb(tuneargs->freq),
1363 };
1364
1365 return si476x_cmd_tune_seek_freq(core, CMD_FM_TUNE_FREQ,
1366 args, sizeof(args),
1367 resp, sizeof(resp));
1368 }
1369
si476x_core_cmd_agc_status_a20(struct si476x_core * core,struct si476x_agc_status_report * report)1370 static int si476x_core_cmd_agc_status_a20(struct si476x_core *core,
1371 struct si476x_agc_status_report *report)
1372 {
1373 int err;
1374 u8 resp[CMD_AGC_STATUS_NRESP_A20];
1375
1376 if (!report)
1377 return -EINVAL;
1378
1379 err = si476x_core_send_command(core, CMD_AGC_STATUS,
1380 NULL, 0,
1381 resp, ARRAY_SIZE(resp),
1382 SI476X_DEFAULT_TIMEOUT);
1383 if (err < 0)
1384 return err;
1385
1386 report->mxhi = resp[1] & SI476X_AGC_MXHI;
1387 report->mxlo = resp[1] & SI476X_AGC_MXLO;
1388 report->lnahi = resp[1] & SI476X_AGC_LNAHI;
1389 report->lnalo = resp[1] & SI476X_AGC_LNALO;
1390 report->fmagc1 = resp[2];
1391 report->fmagc2 = resp[3];
1392 report->pgagain = resp[4];
1393 report->fmwblang = resp[5];
1394
1395 return err;
1396 }
1397
si476x_core_cmd_agc_status_a10(struct si476x_core * core,struct si476x_agc_status_report * report)1398 static int si476x_core_cmd_agc_status_a10(struct si476x_core *core,
1399 struct si476x_agc_status_report *report)
1400 {
1401 int err;
1402 u8 resp[CMD_AGC_STATUS_NRESP_A10];
1403
1404 if (!report)
1405 return -EINVAL;
1406
1407 err = si476x_core_send_command(core, CMD_AGC_STATUS,
1408 NULL, 0,
1409 resp, ARRAY_SIZE(resp),
1410 SI476X_DEFAULT_TIMEOUT);
1411 if (err < 0)
1412 return err;
1413
1414 report->mxhi = resp[1] & SI476X_AGC_MXHI;
1415 report->mxlo = resp[1] & SI476X_AGC_MXLO;
1416 report->lnahi = resp[1] & SI476X_AGC_LNAHI;
1417 report->lnalo = resp[1] & SI476X_AGC_LNALO;
1418
1419 return err;
1420 }
1421
1422 typedef int (*tune_freq_func_t) (struct si476x_core *core,
1423 struct si476x_tune_freq_args *tuneargs);
1424
1425 static struct {
1426 int (*power_up)(struct si476x_core *,
1427 struct si476x_power_up_args *);
1428 int (*power_down)(struct si476x_core *,
1429 struct si476x_power_down_args *);
1430
1431 tune_freq_func_t fm_tune_freq;
1432 tune_freq_func_t am_tune_freq;
1433
1434 int (*fm_rsq_status)(struct si476x_core *,
1435 struct si476x_rsq_status_args *,
1436 struct si476x_rsq_status_report *);
1437
1438 int (*agc_status)(struct si476x_core *,
1439 struct si476x_agc_status_report *);
1440 int (*intb_pin_cfg)(struct si476x_core *core,
1441 enum si476x_intb_config intb,
1442 enum si476x_a1_config a1);
1443 } si476x_cmds_vtable[] = {
1444 [SI476X_REVISION_A10] = {
1445 .power_up = si476x_core_cmd_power_up_a10,
1446 .power_down = si476x_core_cmd_power_down_a10,
1447 .fm_tune_freq = si476x_core_cmd_fm_tune_freq_a10,
1448 .am_tune_freq = si476x_core_cmd_am_tune_freq_a10,
1449 .fm_rsq_status = si476x_core_cmd_fm_rsq_status_a10,
1450 .agc_status = si476x_core_cmd_agc_status_a10,
1451 .intb_pin_cfg = si476x_core_cmd_intb_pin_cfg_a10,
1452 },
1453 [SI476X_REVISION_A20] = {
1454 .power_up = si476x_core_cmd_power_up_a20,
1455 .power_down = si476x_core_cmd_power_down_a20,
1456 .fm_tune_freq = si476x_core_cmd_fm_tune_freq_a20,
1457 .am_tune_freq = si476x_core_cmd_am_tune_freq_a20,
1458 .fm_rsq_status = si476x_core_cmd_fm_rsq_status_a20,
1459 .agc_status = si476x_core_cmd_agc_status_a20,
1460 .intb_pin_cfg = si476x_core_cmd_intb_pin_cfg_a20,
1461 },
1462 [SI476X_REVISION_A30] = {
1463 .power_up = si476x_core_cmd_power_up_a20,
1464 .power_down = si476x_core_cmd_power_down_a20,
1465 .fm_tune_freq = si476x_core_cmd_fm_tune_freq_a20,
1466 .am_tune_freq = si476x_core_cmd_am_tune_freq_a20,
1467 .fm_rsq_status = si476x_core_cmd_fm_rsq_status_a30,
1468 .agc_status = si476x_core_cmd_agc_status_a20,
1469 .intb_pin_cfg = si476x_core_cmd_intb_pin_cfg_a20,
1470 },
1471 };
1472
si476x_core_cmd_power_up(struct si476x_core * core,struct si476x_power_up_args * args)1473 int si476x_core_cmd_power_up(struct si476x_core *core,
1474 struct si476x_power_up_args *args)
1475 {
1476 BUG_ON(core->revision > SI476X_REVISION_A30 ||
1477 core->revision == -1);
1478 return si476x_cmds_vtable[core->revision].power_up(core, args);
1479 }
1480 EXPORT_SYMBOL_GPL(si476x_core_cmd_power_up);
1481
si476x_core_cmd_power_down(struct si476x_core * core,struct si476x_power_down_args * args)1482 int si476x_core_cmd_power_down(struct si476x_core *core,
1483 struct si476x_power_down_args *args)
1484 {
1485 BUG_ON(core->revision > SI476X_REVISION_A30 ||
1486 core->revision == -1);
1487 return si476x_cmds_vtable[core->revision].power_down(core, args);
1488 }
1489 EXPORT_SYMBOL_GPL(si476x_core_cmd_power_down);
1490
si476x_core_cmd_fm_tune_freq(struct si476x_core * core,struct si476x_tune_freq_args * args)1491 int si476x_core_cmd_fm_tune_freq(struct si476x_core *core,
1492 struct si476x_tune_freq_args *args)
1493 {
1494 BUG_ON(core->revision > SI476X_REVISION_A30 ||
1495 core->revision == -1);
1496 return si476x_cmds_vtable[core->revision].fm_tune_freq(core, args);
1497 }
1498 EXPORT_SYMBOL_GPL(si476x_core_cmd_fm_tune_freq);
1499
si476x_core_cmd_am_tune_freq(struct si476x_core * core,struct si476x_tune_freq_args * args)1500 int si476x_core_cmd_am_tune_freq(struct si476x_core *core,
1501 struct si476x_tune_freq_args *args)
1502 {
1503 BUG_ON(core->revision > SI476X_REVISION_A30 ||
1504 core->revision == -1);
1505 return si476x_cmds_vtable[core->revision].am_tune_freq(core, args);
1506 }
1507 EXPORT_SYMBOL_GPL(si476x_core_cmd_am_tune_freq);
1508
si476x_core_cmd_fm_rsq_status(struct si476x_core * core,struct si476x_rsq_status_args * args,struct si476x_rsq_status_report * report)1509 int si476x_core_cmd_fm_rsq_status(struct si476x_core *core,
1510 struct si476x_rsq_status_args *args,
1511 struct si476x_rsq_status_report *report)
1512
1513 {
1514 BUG_ON(core->revision > SI476X_REVISION_A30 ||
1515 core->revision == -1);
1516 return si476x_cmds_vtable[core->revision].fm_rsq_status(core, args,
1517 report);
1518 }
1519 EXPORT_SYMBOL_GPL(si476x_core_cmd_fm_rsq_status);
1520
si476x_core_cmd_agc_status(struct si476x_core * core,struct si476x_agc_status_report * report)1521 int si476x_core_cmd_agc_status(struct si476x_core *core,
1522 struct si476x_agc_status_report *report)
1523
1524 {
1525 BUG_ON(core->revision > SI476X_REVISION_A30 ||
1526 core->revision == -1);
1527 return si476x_cmds_vtable[core->revision].agc_status(core, report);
1528 }
1529 EXPORT_SYMBOL_GPL(si476x_core_cmd_agc_status);
1530
si476x_core_cmd_intb_pin_cfg(struct si476x_core * core,enum si476x_intb_config intb,enum si476x_a1_config a1)1531 int si476x_core_cmd_intb_pin_cfg(struct si476x_core *core,
1532 enum si476x_intb_config intb,
1533 enum si476x_a1_config a1)
1534 {
1535 BUG_ON(core->revision > SI476X_REVISION_A30 ||
1536 core->revision == -1);
1537
1538 return si476x_cmds_vtable[core->revision].intb_pin_cfg(core, intb, a1);
1539 }
1540 EXPORT_SYMBOL_GPL(si476x_core_cmd_intb_pin_cfg);
1541
1542 MODULE_LICENSE("GPL");
1543 MODULE_AUTHOR("Andrey Smirnov <andrew.smirnov@gmail.com>");
1544 MODULE_DESCRIPTION("API for command exchange for si476x");
1545