1 // SPDX-License-Identifier: GPL-2.0-only 1
2 //
3 // rt1318.c -- RT1318 ALSA SoC audio amplifi
4 // Author: Jack Yu <jack.yu@realtek.com>
5 //
6 // Copyright(c) 2024 Realtek Semiconductor Cor
7 //
8 //
9
10 #include <linux/acpi.h>
11 #include <linux/fs.h>
12 #include <linux/module.h>
13 #include <linux/moduleparam.h>
14 #include <linux/init.h>
15 #include <linux/delay.h>
16 #include <linux/pm.h>
17 #include <linux/regmap.h>
18 #include <linux/i2c.h>
19 #include <linux/platform_device.h>
20 #include <linux/firmware.h>
21 #include <linux/gpio.h>
22 #include <sound/core.h>
23 #include <sound/pcm.h>
24 #include <sound/pcm_params.h>
25 #include <sound/soc.h>
26 #include <sound/soc-dapm.h>
27 #include <sound/initval.h>
28 #include <sound/tlv.h>
29 #include <sound/rt1318.h>
30
31 #include "rt1318.h"
32
33 static const struct reg_sequence init_list[] =
34 { 0x0000C000, 0x01},
35 { 0x0000F20D, 0x00},
36 { 0x0000F212, 0x3E},
37 { 0x0000C001, 0x02},
38 { 0x0000C003, 0x22},
39 { 0x0000C004, 0x44},
40 { 0x0000C005, 0x44},
41 { 0x0000C007, 0x64},
42 { 0x0000C00E, 0xE7},
43 { 0x0000F223, 0x7F},
44 { 0x0000F224, 0xDB},
45 { 0x0000F225, 0xEE},
46 { 0x0000F226, 0x3F},
47 { 0x0000F227, 0x0F},
48 { 0x0000F21A, 0x78},
49 { 0x0000F242, 0x3C},
50 { 0x0000C120, 0x40},
51 { 0x0000C125, 0x03},
52 { 0x0000C321, 0x0A},
53 { 0x0000C200, 0xD8},
54 { 0x0000C201, 0x27},
55 { 0x0000C202, 0x0F},
56 { 0x0000C400, 0x0E},
57 { 0x0000C401, 0x43},
58 { 0x0000C402, 0xE0},
59 { 0x0000C403, 0x00},
60 { 0x0000C404, 0x4C},
61 { 0x0000C406, 0x40},
62 { 0x0000C407, 0x02},
63 { 0x0000C408, 0x3F},
64 { 0x0000C300, 0x01},
65 { 0x0000C125, 0x03},
66 { 0x0000DF00, 0x10},
67 { 0x0000F20B, 0x2A},
68 { 0x0000DF5F, 0x01},
69 { 0x0000DF60, 0xA7},
70 { 0x0000C203, 0x84},
71 { 0x0000C206, 0x78},
72 { 0x0000F10A, 0x09},
73 { 0x0000F10B, 0x4C},
74 { 0x0000F104, 0xF4},
75 { 0x0000F105, 0x03},
76 { 0x0000F109, 0xE0},
77 { 0x0000F10B, 0x5C},
78 { 0x0000F104, 0xF4},
79 { 0x0000F105, 0x04},
80 { 0x0000F109, 0x65},
81 { 0x0000F10B, 0x5C},
82 { 0x0000F104, 0xF4},
83 { 0x0000F105, 0x02},
84 { 0x0000F109, 0x30},
85 { 0x0000F10B, 0x5C},
86 { 0x0000E706, 0x0F},
87 { 0x0000E707, 0x30},
88 { 0x0000E806, 0x0F},
89 { 0x0000E807, 0x30},
90 { 0x0000CE04, 0x03},
91 { 0x0000CE05, 0x5F},
92 { 0x0000CE06, 0xA2},
93 { 0x0000CE07, 0x6B},
94 { 0x0000CF04, 0x03},
95 { 0x0000CF05, 0x5F},
96 { 0x0000CF06, 0xA2},
97 { 0x0000CF07, 0x6B},
98 { 0x0000CE60, 0xE3},
99 { 0x0000C130, 0x51},
100 { 0x0000E000, 0xA8},
101 { 0x0000F102, 0x00},
102 { 0x0000F103, 0x00},
103 { 0x0000F104, 0xF5},
104 { 0x0000F105, 0x23},
105 { 0x0000F109, 0x04},
106 { 0x0000F10A, 0x0B},
107 { 0x0000F10B, 0x4C},
108 { 0x0000F10B, 0x5C},
109 { 0x41001888, 0x00},
110 { 0x0000C121, 0x0B},
111 { 0x0000F102, 0x00},
112 { 0x0000F103, 0x00},
113 { 0x0000F104, 0xF5},
114 { 0x0000F105, 0x23},
115 { 0x0000F109, 0x00},
116 { 0x0000F10A, 0x0B},
117 { 0x0000F10B, 0x4C},
118 { 0x0000F10B, 0x5C},
119 { 0x0000F800, 0x20},
120 { 0x0000CA00, 0x80},
121 { 0x0000CA10, 0x00},
122 { 0x0000CA02, 0x78},
123 { 0x0000CA12, 0x78},
124 { 0x0000ED00, 0x90},
125 { 0x0000E604, 0x00},
126 { 0x0000DB00, 0x0C},
127 { 0x0000DD00, 0x0C},
128 { 0x0000DC19, 0x00},
129 { 0x0000DC1A, 0x6A},
130 { 0x0000DC1B, 0xAA},
131 { 0x0000DC1C, 0xAB},
132 { 0x0000DC1D, 0x00},
133 { 0x0000DC1E, 0x16},
134 { 0x0000DC1F, 0xDB},
135 { 0x0000DC20, 0x6D},
136 { 0x0000DE19, 0x00},
137 { 0x0000DE1A, 0x6A},
138 { 0x0000DE1B, 0xAA},
139 { 0x0000DE1C, 0xAB},
140 { 0x0000DE1D, 0x00},
141 { 0x0000DE1E, 0x16},
142 { 0x0000DE1F, 0xDB},
143 { 0x0000DE20, 0x6D},
144 { 0x0000DB32, 0x00},
145 { 0x0000DD32, 0x00},
146 { 0x0000DB33, 0x0A},
147 { 0x0000DD33, 0x0A},
148 { 0x0000DB34, 0x1A},
149 { 0x0000DD34, 0x1A},
150 { 0x0000DB15, 0xEF},
151 { 0x0000DD15, 0xEF},
152 { 0x0000DB17, 0xEF},
153 { 0x0000DD17, 0xEF},
154 { 0x0000DB94, 0x70},
155 { 0x0000DD94, 0x70},
156 { 0x0000DB19, 0x40},
157 { 0x0000DD19, 0x40},
158 { 0x0000DB12, 0xC0},
159 { 0x0000DD12, 0xC0},
160 { 0x0000DB00, 0x4C},
161 { 0x0000DB04, 0x05},
162 { 0x0000DB05, 0x03},
163 { 0x0000DD04, 0x05},
164 { 0x0000DD05, 0x03},
165 { 0x0000DBBB, 0x09},
166 { 0x0000DBBC, 0x30},
167 { 0x0000DBBD, 0xF0},
168 { 0x0000DBBE, 0xF1},
169 { 0x0000DDBB, 0x09},
170 { 0x0000DDBC, 0x30},
171 { 0x0000DDBD, 0xF0},
172 { 0x0000DDBE, 0xF1},
173 { 0x0000DB01, 0x79},
174 { 0x0000DD01, 0x79},
175 { 0x0000DB08, 0x40},
176 { 0x0000DD08, 0x40},
177 { 0x0000DC52, 0xEF},
178 { 0x0000DE52, 0xEF},
179 { 0x0000DB00, 0xCC},
180 { 0x0000CC2C, 0x00},
181 { 0x0000CC2D, 0x2A},
182 { 0x0000CC2E, 0x83},
183 { 0x0000CC2F, 0xA8},
184 { 0x0000CD2C, 0x00},
185 { 0x0000CD2D, 0x2A},
186 { 0x0000CD2E, 0x83},
187 { 0x0000CD2F, 0xA8},
188 { 0x0000CC24, 0x00},
189 { 0x0000CC25, 0x51},
190 { 0x0000CC26, 0xEB},
191 { 0x0000CC27, 0x85},
192 { 0x0000CD24, 0x00},
193 { 0x0000CD25, 0x51},
194 { 0x0000CD26, 0xEB},
195 { 0x0000CD27, 0x85},
196 { 0x0000CC20, 0x00},
197 { 0x0000CC21, 0x00},
198 { 0x0000CC22, 0x43},
199 { 0x0000CD20, 0x00},
200 { 0x0000CD21, 0x00},
201 { 0x0000CD22, 0x43},
202 { 0x0000CC16, 0x0F},
203 { 0x0000CC17, 0x00},
204 { 0x0000CD16, 0x0F},
205 { 0x0000CD17, 0x00},
206 { 0x0000CC29, 0x5D},
207 { 0x0000CC2A, 0xC0},
208 { 0x0000CD29, 0x5D},
209 { 0x0000CD2A, 0xC0},
210 { 0x0000CC31, 0x20},
211 { 0x0000CC32, 0x00},
212 { 0x0000CC33, 0x00},
213 { 0x0000CC34, 0x00},
214 { 0x0000CD31, 0x20},
215 { 0x0000CD32, 0x00},
216 { 0x0000CD33, 0x00},
217 { 0x0000CD34, 0x00},
218 { 0x0000CC36, 0x79},
219 { 0x0000CC37, 0x99},
220 { 0x0000CC38, 0x99},
221 { 0x0000CC39, 0x99},
222 { 0x0000CD36, 0x79},
223 { 0x0000CD37, 0x99},
224 { 0x0000CD38, 0x99},
225 { 0x0000CD39, 0x99},
226 { 0x0000CC09, 0x00},
227 { 0x0000CC0A, 0x07},
228 { 0x0000CC0B, 0x5F},
229 { 0x0000CC0C, 0x6F},
230 { 0x0000CD09, 0x00},
231 { 0x0000CD0A, 0x07},
232 { 0x0000CD0B, 0x5F},
233 { 0x0000CD0C, 0x6F},
234 { 0x0000CC0E, 0x00},
235 { 0x0000CC0F, 0x03},
236 { 0x0000CC10, 0xAF},
237 { 0x0000CC11, 0xB7},
238 { 0x0000CD0E, 0x00},
239 { 0x0000CD0F, 0x03},
240 { 0x0000CD10, 0xAF},
241 { 0x0000CD11, 0xB7},
242 { 0x0000CCD6, 0x00},
243 { 0x0000CCD7, 0x03},
244 { 0x0000CDD6, 0x00},
245 { 0x0000CDD7, 0x03},
246 { 0x0000CCD8, 0x00},
247 { 0x0000CCD9, 0x03},
248 { 0x0000CDD8, 0x00},
249 { 0x0000CDD9, 0x03},
250 { 0x0000CCDA, 0x00},
251 { 0x0000CCDB, 0x03},
252 { 0x0000CDDA, 0x00},
253 { 0x0000CDDB, 0x03},
254 { 0x0000C320, 0x20},
255 { 0x0000C203, 0x9C},
256 };
257
258 static const struct reg_default rt1318_reg[] =
259 { 0xc000, 0x00 },
260 { 0xc001, 0x43 },
261 { 0xc003, 0x22 },
262 { 0xc004, 0x44 },
263 { 0xc005, 0x44 },
264 { 0xc006, 0x33 },
265 { 0xc007, 0x64 },
266 { 0xc008, 0x05 },
267 { 0xc00a, 0xfc },
268 { 0xc00b, 0x0f },
269 { 0xc00c, 0x0e },
270 { 0xc00d, 0xef },
271 { 0xc00e, 0xe5 },
272 { 0xc00f, 0xff },
273 { 0xc120, 0xc0 },
274 { 0xc121, 0x00 },
275 { 0xc122, 0x00 },
276 { 0xc123, 0x14 },
277 { 0xc125, 0x00 },
278 { 0xc130, 0x59 },
279 { 0xc200, 0x00 },
280 { 0xc201, 0x00 },
281 { 0xc202, 0x00 },
282 { 0xc203, 0x04 },
283 { 0xc204, 0x00 },
284 { 0xc205, 0x00 },
285 { 0xc206, 0x68 },
286 { 0xc207, 0x70 },
287 { 0xc208, 0x00 },
288 { 0xc20a, 0x00 },
289 { 0xc20b, 0x01 },
290 { 0xc20c, 0x7f },
291 { 0xc20d, 0x01 },
292 { 0xc20e, 0x7f },
293 { 0xc300, 0x00 },
294 { 0xc301, 0x00 },
295 { 0xc303, 0x80 },
296 { 0xc320, 0x00 },
297 { 0xc321, 0x09 },
298 { 0xc322, 0x02 },
299 { 0xc400, 0x00 },
300 { 0xc401, 0x00 },
301 { 0xc402, 0x00 },
302 { 0xc403, 0x00 },
303 { 0xc404, 0x00 },
304 { 0xc405, 0x00 },
305 { 0xc406, 0x00 },
306 { 0xc407, 0x00 },
307 { 0xc408, 0x00 },
308 { 0xc410, 0x04 },
309 { 0xc430, 0x00 },
310 { 0xc431, 0x00 },
311 { 0xca00, 0x10 },
312 { 0xca01, 0x00 },
313 { 0xca02, 0x0b },
314 { 0xca10, 0x10 },
315 { 0xca11, 0x00 },
316 { 0xca12, 0x0b },
317 { 0xce04, 0x08 },
318 { 0xce05, 0x00 },
319 { 0xce06, 0x00 },
320 { 0xce07, 0x00 },
321 { 0xce60, 0x63 },
322 { 0xcf04, 0x08 },
323 { 0xcf05, 0x00 },
324 { 0xcf06, 0x00 },
325 { 0xcf07, 0x00 },
326 { 0xdb00, 0x00 },
327 { 0xdb08, 0x40 },
328 { 0xdb12, 0x00 },
329 { 0xdb35, 0x00 },
330 { 0xdbb5, 0x00 },
331 { 0xdbb6, 0x40 },
332 { 0xdbb7, 0x00 },
333 { 0xdbb8, 0x00 },
334 { 0xdbc5, 0x00 },
335 { 0xdbc6, 0x00 },
336 { 0xdbc7, 0x00 },
337 { 0xdbc8, 0x00 },
338 { 0xdd08, 0x40 },
339 { 0xdd12, 0x00 },
340 { 0xdd35, 0x00 },
341 { 0xddb5, 0x00 },
342 { 0xddb6, 0x40 },
343 { 0xddb7, 0x00 },
344 { 0xddb8, 0x00 },
345 { 0xddc5, 0x00 },
346 { 0xddc6, 0x00 },
347 { 0xddc7, 0x00 },
348 { 0xddc8, 0x00 },
349 { 0xdd93, 0x00 },
350 { 0xdd94, 0x64 },
351 { 0xdf00, 0x00 },
352 { 0xdf5f, 0x00 },
353 { 0xdf60, 0x00 },
354 { 0xe000, 0x08 },
355 { 0xe300, 0xa0 },
356 { 0xe400, 0x22 },
357 { 0xe706, 0x2f },
358 { 0xe707, 0x2f },
359 { 0xe806, 0x2f },
360 { 0xe807, 0x2f },
361 { 0xea00, 0x43 },
362 { 0xed00, 0x80 },
363 { 0xed01, 0x0f },
364 { 0xed02, 0xff },
365 { 0xed03, 0x00 },
366 { 0xed04, 0x00 },
367 { 0xed05, 0x0f },
368 { 0xed06, 0xff },
369 { 0xf010, 0x10 },
370 { 0xf011, 0xec },
371 { 0xf012, 0x68 },
372 { 0xf013, 0x21 },
373 { 0xf102, 0x00 },
374 { 0xf103, 0x00 },
375 { 0xf104, 0x00 },
376 { 0xf105, 0x00 },
377 { 0xf106, 0x00 },
378 { 0xf107, 0x00 },
379 { 0xf108, 0x00 },
380 { 0xf109, 0x00 },
381 { 0xf10a, 0x03 },
382 { 0xf10b, 0x40 },
383 { 0xf20b, 0x28 },
384 { 0xf20d, 0x00 },
385 { 0xf212, 0x00 },
386 { 0xf21a, 0x00 },
387 { 0xf223, 0x40 },
388 { 0xf224, 0x00 },
389 { 0xf225, 0x00 },
390 { 0xf226, 0x00 },
391 { 0xf227, 0x00 },
392 { 0xf242, 0x0c },
393 { 0xf800, 0x00 },
394 { 0xf801, 0x12 },
395 { 0xf802, 0xe0 },
396 { 0xf803, 0x2f },
397 { 0xf804, 0x00 },
398 { 0xf805, 0x00 },
399 { 0xf806, 0x07 },
400 { 0xf807, 0xff },
401 };
402
403 static bool rt1318_volatile_register(struct de
404 {
405 switch (reg) {
406 case 0xc000:
407 case 0xc301:
408 case 0xc410:
409 case 0xc430 ... 0xc431:
410 case 0xdb06:
411 case 0xdb12:
412 case 0xdb1d ... 0xdb1f:
413 case 0xdb35:
414 case 0xdb37:
415 case 0xdb8a ... 0xdb92:
416 case 0xdbc5 ... 0xdbc8:
417 case 0xdc2b ... 0xdc49:
418 case 0xdd0b:
419 case 0xdd12:
420 case 0xdd1d ... 0xdd1f:
421 case 0xdd35:
422 case 0xdd8a ... 0xdd92:
423 case 0xddc5 ... 0xddc8:
424 case 0xde2b ... 0xde44:
425 case 0xdf4a ... 0xdf55:
426 case 0xe224 ... 0xe23b:
427 case 0xea01:
428 case 0xebc5:
429 case 0xebc8:
430 case 0xebcb ... 0xebcc:
431 case 0xed03 ... 0xed06:
432 case 0xf010 ... 0xf014:
433 return true;
434
435 default:
436 return false;
437 }
438 }
439
440 static bool rt1318_readable_register(struct de
441 {
442 switch (reg) {
443 case 0xc000 ... 0xc00f:
444 case 0xc120 ... 0xc130:
445 case 0xc200 ... 0xc20e:
446 case 0xc300 ... 0xc303:
447 case 0xc320 ... 0xc322:
448 case 0xc400 ... 0xc408:
449 case 0xc430 ... 0xc431:
450 case 0xca00 ... 0xca02:
451 case 0xca10 ... 0xca12:
452 case 0xcb00 ... 0xcb0b:
453 case 0xcc00 ... 0xcce5:
454 case 0xcd00 ... 0xcde5:
455 case 0xce00 ... 0xce6a:
456 case 0xcf00 ... 0xcf53:
457 case 0xd000 ... 0xd0cc:
458 case 0xd100 ... 0xd1b9:
459 case 0xdb00 ... 0xdc53:
460 case 0xdd00 ... 0xde53:
461 case 0xdf00 ... 0xdf6b:
462 case 0xe000:
463 case 0xe300:
464 case 0xe400:
465 case 0xe706 ... 0xe707:
466 case 0xe806 ... 0xe807:
467 case 0xea00:
468 case 0xeb00 ... 0xebcc:
469 case 0xec00 ... 0xecb9:
470 case 0xed00 ... 0xed06:
471 case 0xf010 ... 0xf014:
472 case 0xf102 ... 0xf10b:
473 case 0xf20b:
474 case 0xf20d ... 0xf242:
475 case 0xf800 ... 0xf807:
476 return true;
477 default:
478 return false;
479 }
480 }
481
482 static int rt1318_dac_event(struct snd_soc_dap
483 struct snd_kcontrol *kcontrol, int eve
484 {
485 struct snd_soc_component *component =
486 struct rt1318_priv *rt1318 = snd_soc_c
487
488 switch (event) {
489 case SND_SOC_DAPM_PRE_PMU:
490 regmap_update_bits(rt1318->reg
491 RT1318_PDB_CTR
492 break;
493
494 case SND_SOC_DAPM_POST_PMD:
495 regmap_update_bits(rt1318->reg
496 RT1318_PDB_CTR
497 break;
498
499 default:
500 break;
501 }
502 return 0;
503 }
504
505 static int rt1318_dvol_put(struct snd_kcontrol
506 struct snd_ctl_elem_value *uco
507 {
508 struct snd_soc_component *component =
509 struct rt1318_priv *rt1318 = snd_soc_c
510
511 rt1318->rt1318_dvol = ucontrol->value.
512
513 if (rt1318->rt1318_dvol <= RT1318_DVOL
514 regmap_write(rt1318->regmap, R
515 rt1318->rt1318_dvol >>
516 regmap_write(rt1318->regmap, R
517 rt1318->rt1318_dvol &
518 regmap_write(rt1318->regmap, R
519 rt1318->rt1318_dvol >>
520 regmap_write(rt1318->regmap, R
521 rt1318->rt1318_dvol &
522 return 1;
523 }
524
525 return 0;
526 }
527
528 static int rt1318_dvol_get(struct snd_kcontrol
529 struct snd_ctl_elem_value *uco
530 {
531 struct snd_soc_component *component =
532 struct rt1318_priv *rt1318 = snd_soc_c
533
534 ucontrol->value.integer.value[0] = rt1
535
536 return 0;
537 }
538
539 static const struct snd_kcontrol_new rt1318_sn
540 SOC_SINGLE_EXT("Amp Playback Volume",
541 rt1318_dvol_get, rt1318_dvol_p
542 };
543
544 static const struct snd_soc_dapm_widget rt1318
545 /* Audio Interface */
546 SND_SOC_DAPM_AIF_IN("AIF1RX", "AIF1 Pl
547 /* DACs */
548 SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SO
549 rt1318_dac_event, SND_SOC_DAPM
550 SND_SOC_DAPM_POST_PMD),
551 /* Output Lines */
552 SND_SOC_DAPM_OUTPUT("Amp"),
553 };
554
555 static const struct snd_soc_dapm_route rt1318_
556 {"DAC", NULL, "AIF1RX"},
557 {"Amp", NULL, "DAC"},
558 };
559
560 static int rt1318_get_clk_info(int sclk, int r
561 {
562 int i, pd[] = {1, 2, 4, 8, 16, 24};
563
564 if (sclk <= 0 || rate <= 0)
565 return -EINVAL;
566
567 rate = rate << 8;
568 for (i = 0; i < ARRAY_SIZE(pd); i++)
569 if (sclk == rate * pd[i])
570 return i;
571
572 return -EINVAL;
573 }
574
575 static int rt1318_clk_ip_info(struct snd_soc_c
576 {
577 struct rt1318_priv *rt1318 = snd_soc_c
578
579 switch (lrclk) {
580 case RT1318_LRCLK_48000:
581 case RT1318_LRCLK_44100:
582 case RT1318_LRCLK_16000:
583 regmap_update_bits(rt1318->reg
584 RT1318_SRCIN_F
585 RT1318_SRCIN_T
586 break;
587 case RT1318_LRCLK_96000:
588 regmap_update_bits(rt1318->reg
589 RT1318_SRCIN_F
590 RT1318_SRCIN_T
591 break;
592 case RT1318_LRCLK_192000:
593 regmap_update_bits(rt1318->reg
594 RT1318_SRCIN_F
595 RT1318_SRCIN_T
596 break;
597 default:
598 dev_err(component->dev, "Unsup
599 return -EINVAL;
600 }
601
602 return 0;
603 }
604
605 static int rt1318_hw_params(struct snd_pcm_sub
606 struct snd_pcm_hw_params *params, stru
607 {
608 struct snd_soc_component *component =
609 struct rt1318_priv *rt1318 = snd_soc_c
610 int data_len = 0, ch_len = 0;
611 int pre_div, ret;
612
613 rt1318->lrck = params_rate(params);
614 pre_div = rt1318_get_clk_info(rt1318->
615 if (pre_div < 0) {
616 dev_err(component->dev, "Unsup
617 return -EINVAL;
618 }
619 ret = rt1318_clk_ip_info(component, rt
620 if (ret < 0) {
621 dev_err(component->dev, "Unsup
622 return -EINVAL;
623 }
624
625 switch (params_width(params)) {
626 case 16:
627 break;
628 case 20:
629 data_len = RT1318_I2S_DL_20;
630 ch_len = RT1318_I2S_DL_20;
631 break;
632 case 24:
633 data_len = RT1318_I2S_DL_24;
634 ch_len = RT1318_I2S_DL_24;
635 break;
636 case 32:
637 data_len = RT1318_I2S_DL_32;
638 ch_len = RT1318_I2S_DL_32;
639 break;
640 case 8:
641 data_len = RT1318_I2S_DL_8;
642 ch_len = RT1318_I2S_DL_8;
643 break;
644 default:
645 return -EINVAL;
646 }
647
648 regmap_update_bits(rt1318->regmap, RT1
649 RT1318_DIV_AP_
650 pre_div << RT1
651 pre_div << RT1
652 regmap_update_bits(rt1318->regmap, RT1
653 RT1318_AD_STO1
654 pre_div << RT1
655 pre_div << RT1
656 regmap_update_bits(rt1318->regmap, RT1
657 RT1318_AD_ANA_
658 pre_div << RT1
659 pre_div << RT1
660 regmap_update_bits(rt1318->regmap, RT1
661 RT1318_DIV_FIF
662 pre_div << RT1
663 pre_div << RT1
664 regmap_update_bits(rt1318->regmap, RT1
665 RT1318_DIV_NLM
666 RT1318_DIV_POS
667 pre_div << RT1
668 pre_div << RT1
669
670 regmap_update_bits(rt1318->regmap, RT1
671 RT1318_I2S_DL_
672 regmap_update_bits(rt1318->regmap, RT1
673 RT1318_I2S_TX_
674 ch_len << RT13
675 ch_len << RT13
676
677 return 0;
678 }
679
680 static int rt1318_set_dai_fmt(struct snd_soc_d
681 {
682 struct snd_soc_component *component =
683 struct rt1318_priv *rt1318 = snd_soc_c
684 unsigned int reg_val = 0, reg_val2 = 0
685
686 switch (fmt & SND_SOC_DAIFMT_INV_MASK)
687 case SND_SOC_DAIFMT_NB_NF:
688 break;
689 case SND_SOC_DAIFMT_IB_NF:
690 reg_val2 |= RT1318_TDM_BCLK_IN
691 break;
692 default:
693 return -EINVAL;
694 }
695
696 switch (fmt & SND_SOC_DAIFMT_FORMAT_MA
697 case SND_SOC_DAIFMT_I2S:
698 break;
699
700 case SND_SOC_DAIFMT_LEFT_J:
701 reg_val |= RT1318_FMT_LEFT_J;
702 break;
703
704 case SND_SOC_DAIFMT_DSP_A:
705 reg_val |= RT1318_FMT_PCM_A_R;
706 break;
707
708 case SND_SOC_DAIFMT_DSP_B:
709 reg_val |= RT1318_FMT_PCM_B_R;
710 break;
711
712 default:
713 return -EINVAL;
714 }
715
716 regmap_update_bits(rt1318->regmap, RT1
717 RT1318_I2S_FMT_MASK, r
718 regmap_update_bits(rt1318->regmap, RT1
719 RT1318_TDM_BCLK_MASK,
720
721 return 0;
722 }
723
724 static int rt1318_set_dai_sysclk(struct snd_so
725 int clk_id, unsigned int freq,
726 {
727 struct snd_soc_component *component =
728 struct rt1318_priv *rt1318 = snd_soc_c
729 int reg_val = 0;
730
731 if (freq == rt1318->sysclk && clk_id =
732 return 0;
733
734 switch (clk_id) {
735 case RT1318_SCLK_S_BCLK:
736 reg_val |= RT1318_SYSCLK_BCLK;
737 break;
738 case RT1318_SCLK_S_SDW:
739 reg_val |= RT1318_SYSCLK_SDW;
740 break;
741 case RT1318_SCLK_S_PLL2F:
742 reg_val |= RT1318_SYSCLK_PLL2F
743 break;
744 case RT1318_SCLK_S_PLL2B:
745 reg_val |= RT1318_SYSCLK_PLL2B
746 break;
747 case RT1318_SCLK_S_MCLK:
748 reg_val |= RT1318_SYSCLK_MCLK;
749 break;
750 case RT1318_SCLK_S_RC0:
751 reg_val |= RT1318_SYSCLK_RC1;
752 break;
753 case RT1318_SCLK_S_RC1:
754 reg_val |= RT1318_SYSCLK_RC2;
755 break;
756 case RT1318_SCLK_S_RC2:
757 reg_val |= RT1318_SYSCLK_RC3;
758 break;
759 default:
760 dev_err(component->dev, "Inval
761 return -EINVAL;
762 }
763
764 rt1318->sysclk = freq;
765 rt1318->sysclk_src = clk_id;
766 dev_dbg(dai->dev, "Sysclk is %dHz and
767 regmap_update_bits(rt1318->regmap, RT1
768 RT1318_SYSCLK_SEL_MASK
769
770 return 0;
771 }
772
773 static const struct pll_calc_map pll_preset_ta
774 {512000, 4096000, 22, 190, 0, true, fa
775 {1024000, 4096000, 22, 94, 0, true, fa
776 {1024000, 16384000, 4, 190, 0, true, f
777 {1411200, 11289600, 6, 62, 0, true, fa
778 {1536000, 12288000, 6, 62, 0, true, fa
779 {2822400, 11289600, 6, 62, 0, true, fa
780 {2822400, 45158400, 0, 62, 0, true, fa
781 {2822400, 49152000, 0, 62, 0, true, fa
782 {3072000, 12288000, 6, 62, 0, true, fa
783 {3072000, 24576000, 2, 62, 0, true, fa
784 {3072000, 49152000, 0, 62, 0, true, fa
785 {6144000, 24576000, 2, 94, 4, false, f
786 {6144000, 49152000, 0, 30, 0, true, fa
787 {6144000, 98304000, 0, 94, 4, false, t
788 {12288000, 49152000, 0, 62, 6, false,
789 };
790
791 static int rt1318_pll_calc(const unsigned int
792 const unsigned int freq_out, struct rt
793 {
794 int max_n = RT1318_PLL_N_MAX, max_m =
795 int i, k, red, n_t, pll_out, in_t, out
796 int n = 0, m = 0, m_t = 0;
797 int red_t = abs(freq_out - freq_in);
798 bool m_bypass = false, k_bypass = fals
799
800 if (RT1318_PLL_INP_MAX < freq_in || RT
801 return -EINVAL;
802
803 for (i = 0; i < ARRAY_SIZE(pll_preset_
804 if (freq_in == pll_preset_tabl
805 freq_out == pll_preset
806 k = pll_preset_table[i
807 m = pll_preset_table[i
808 n = pll_preset_table[i
809 m_bypass = pll_preset_
810 k_bypass = pll_preset_
811 goto code_find;
812 }
813 }
814
815 k = 100000000 / freq_out - 2;
816 if (k > RT1318_PLL_K_MAX)
817 k = RT1318_PLL_K_MAX;
818 if (k < 0) {
819 k = 0;
820 k_bypass = true;
821 }
822 for (n_t = 0; n_t <= max_n; n_t++) {
823 in_t = freq_in / (k_bypass ? 1
824 pll_out = freq_out / (n_t + 2)
825 if (in_t < 0)
826 continue;
827 if (in_t == pll_out) {
828 m_bypass = true;
829 n = n_t;
830 goto code_find;
831 }
832 red = abs(in_t - pll_out);
833 if (red < red_t) {
834 m_bypass = true;
835 n = n_t;
836 m = m_t;
837 if (red == 0)
838 goto code_find
839 red_t = red;
840 }
841 for (m_t = 0; m_t <= max_m; m_
842 out_t = in_t / (m_t +
843 red = abs(out_t - pll_
844 if (red < red_t) {
845 m_bypass = fal
846 n = n_t;
847 m = m_t;
848 if (red == 0)
849 goto c
850 red_t = red;
851 }
852 }
853 }
854 pr_debug("Only get approximation about
855
856 code_find:
857
858 pll_code->m_bp = m_bypass;
859 pll_code->k_bp = k_bypass;
860 pll_code->m_code = m;
861 pll_code->n_code = n;
862 pll_code->k_code = k;
863 return 0;
864 }
865
866 static int rt1318_set_dai_pll(struct snd_soc_d
867 unsigned int freq_in,
868 {
869 struct snd_soc_component *component =
870 struct rt1318_priv *rt1318 = snd_soc_c
871 struct rt1318_pll_code pll_code;
872 int ret;
873
874 if (!freq_in || !freq_out) {
875 dev_dbg(component->dev, "PLL d
876 rt1318->pll_in = 0;
877 rt1318->pll_out = 0;
878 return 0;
879 }
880
881 if (source == rt1318->pll_src && freq_
882 freq_out == rt1318->pll_out)
883 return 0;
884
885 switch (source) {
886 case RT1318_PLL_S_BCLK0:
887 regmap_update_bits(rt1318->reg
888 RT1318_PLLIN_MASK, RT1
889 break;
890 case RT1318_PLL_S_BCLK1:
891 regmap_update_bits(rt1318->reg
892 RT1318_PLLIN_MASK, RT1
893 break;
894 case RT1318_PLL_S_RC:
895 regmap_update_bits(rt1318->reg
896 RT1318_PLLIN_MASK, RT1
897 break;
898 case RT1318_PLL_S_MCLK:
899 regmap_update_bits(rt1318->reg
900 RT1318_PLLIN_MASK, RT1
901 break;
902 case RT1318_PLL_S_SDW_IN_PLL:
903 regmap_update_bits(rt1318->reg
904 RT1318_PLLIN_MASK, RT1
905 break;
906 case RT1318_PLL_S_SDW_0:
907 regmap_update_bits(rt1318->reg
908 RT1318_PLLIN_MASK, RT1
909 break;
910 case RT1318_PLL_S_SDW_1:
911 regmap_update_bits(rt1318->reg
912 RT1318_PLLIN_MASK, RT1
913 break;
914 case RT1318_PLL_S_SDW_2:
915 regmap_update_bits(rt1318->reg
916 RT1318_PLLIN_MASK, RT1
917 break;
918 default:
919 dev_err(component->dev, "Unkno
920 return -EINVAL;
921 }
922
923 ret = rt1318_pll_calc(freq_in, freq_ou
924 if (ret < 0) {
925 dev_err(component->dev, "Unsup
926 return ret;
927 }
928
929 dev_dbg(component->dev, "bypass=%d m=%
930 pll_code.m_bp, (pll_code.m_bp
931 pll_code.n_code, pll_code.k_co
932
933 regmap_update_bits(rt1318->regmap, RT1
934 RT1318_K_PLL1_MASK, pl
935 regmap_update_bits(rt1318->regmap, RT1
936 RT1318_M_PLL1_MASK, (p
937 regmap_update_bits(rt1318->regmap, RT1
938 RT1318_N_8_PLL1_MASK,
939 regmap_update_bits(rt1318->regmap, RT1
940 RT1318_N_7_0_PLL1_MASK
941
942 rt1318->pll_in = freq_in;
943 rt1318->pll_out = freq_out;
944 rt1318->pll_src = source;
945
946 return 0;
947 }
948
949 static int rt1318_set_tdm_slot(struct snd_soc_
950 unsigned int rx_mask,
951 {
952 struct snd_soc_component *component =
953 struct rt1318_priv *rt1318 = snd_soc_c
954 unsigned int cn = 0, cl = 0, rx_slotnu
955 int ret = 0, first_bit;
956
957 switch (slots) {
958 case 4:
959 cn |= RT1318_I2S_CH_TX_4CH;
960 cn |= RT1318_I2S_CH_RX_4CH;
961 break;
962 case 6:
963 cn |= RT1318_I2S_CH_TX_6CH;
964 cn |= RT1318_I2S_CH_RX_6CH;
965 break;
966 case 8:
967 cn |= RT1318_I2S_CH_TX_8CH;
968 cn |= RT1318_I2S_CH_RX_8CH;
969 break;
970 case 2:
971 break;
972 default:
973 return -EINVAL;
974 }
975
976 switch (slot_width) {
977 case 20:
978 cl |= RT1318_I2S_TX_CHL_20;
979 cl |= RT1318_I2S_RX_CHL_20;
980 break;
981 case 24:
982 cl |= RT1318_I2S_TX_CHL_24;
983 cl |= RT1318_I2S_RX_CHL_24;
984 break;
985 case 32:
986 cl |= RT1318_I2S_TX_CHL_32;
987 cl |= RT1318_I2S_RX_CHL_32;
988 break;
989 case 8:
990 cl |= RT1318_I2S_TX_CHL_8;
991 cl |= RT1318_I2S_RX_CHL_8;
992 break;
993 case 16:
994 break;
995 default:
996 return -EINVAL;
997 }
998
999 /* Rx slot configuration */
1000 rx_slotnum = hweight_long(rx_mask);
1001 if (rx_slotnum != 1) {
1002 ret = -EINVAL;
1003 dev_err(component->dev, "too
1004 goto _set_tdm_err_;
1005 }
1006
1007 first_bit = __ffs(rx_mask);
1008 switch (first_bit) {
1009 case 0:
1010 case 2:
1011 case 4:
1012 case 6:
1013 regmap_update_bits(rt1318->re
1014 RT1318_TDM_CTRL9,
1015 RT1318_TDM_I2S_TX_L_D
1016 RT1318_TDM_I2S_TX_R_D
1017 (first_bit << RT1318_
1018 ((first_bit + 1) << R
1019 break;
1020 case 1:
1021 case 3:
1022 case 5:
1023 case 7:
1024 regmap_update_bits(rt1318->re
1025 RT1318_TDM_CTRL9,
1026 RT1318_TDM_I2S_TX_L_D
1027 RT1318_TDM_I2S_TX_R_D
1028 ((first_bit - 1) << R
1029 (first_bit << RT1318_
1030 break;
1031 default:
1032 ret = -EINVAL;
1033 goto _set_tdm_err_;
1034 }
1035
1036 regmap_update_bits(rt1318->regmap, RT
1037 RT1318_I2S_CH_TX_MASK
1038 regmap_update_bits(rt1318->regmap, RT
1039 RT1318_I2S_TX_CHL_MAS
1040
1041 _set_tdm_err_:
1042 return ret;
1043 }
1044
1045 static int rt1318_probe(struct snd_soc_compon
1046 {
1047 struct rt1318_priv *rt1318 = snd_soc_
1048
1049 rt1318->component = component;
1050
1051 schedule_work(&rt1318->cali_work);
1052 rt1318->rt1318_dvol = RT1318_DVOL_STE
1053
1054 return 0;
1055 }
1056
1057 static void rt1318_remove(struct snd_soc_comp
1058 {
1059 struct rt1318_priv *rt1318 = snd_soc_
1060
1061 cancel_work_sync(&rt1318->cali_work);
1062 }
1063
1064 #ifdef CONFIG_PM
1065 static int rt1318_suspend(struct snd_soc_comp
1066 {
1067 struct rt1318_priv *rt1318 = snd_soc_
1068
1069 regcache_cache_only(rt1318->regmap, t
1070 regcache_mark_dirty(rt1318->regmap);
1071 return 0;
1072 }
1073
1074 static int rt1318_resume(struct snd_soc_compo
1075 {
1076 struct rt1318_priv *rt1318 = snd_soc_
1077
1078 regcache_cache_only(rt1318->regmap, f
1079 regcache_sync(rt1318->regmap);
1080 return 0;
1081 }
1082 #else
1083 #define rt1318_suspend NULL
1084 #define rt1318_resume NULL
1085 #endif
1086
1087 #define RT1318_STEREO_RATES SNDRV_PCM_RATE_80
1088 #define RT1318_FORMATS (SNDRV_PCM_FMTBIT_S16_
1089 SNDRV_PCM_FMTBIT_S24_
1090
1091 static const struct snd_soc_dai_ops rt1318_ai
1092 .hw_params = rt1318_hw_params,
1093 .set_fmt = rt1318_set_dai_fmt,
1094 .set_sysclk = rt1318_set_dai_sysclk,
1095 .set_pll = rt1318_set_dai_pll,
1096 .set_tdm_slot = rt1318_set_tdm_slot,
1097 };
1098
1099 static struct snd_soc_dai_driver rt1318_dai[]
1100 {
1101 .name = "rt1318-aif",
1102 .id = 0,
1103 .playback = {
1104 .stream_name = "AIF1
1105 .channels_min = 1,
1106 .channels_max = 2,
1107 .rates = RT1318_STERE
1108 .formats = RT1318_FOR
1109 },
1110 .ops = &rt1318_aif_dai_ops,
1111 }
1112 };
1113
1114 static const struct snd_soc_component_driver
1115 .probe = rt1318_probe,
1116 .remove = rt1318_remove,
1117 .suspend = rt1318_suspend,
1118 .resume = rt1318_resume,
1119 .controls = rt1318_snd_controls,
1120 .num_controls = ARRAY_SIZE(rt1318_snd
1121 .dapm_widgets = rt1318_dapm_widgets,
1122 .num_dapm_widgets = ARRAY_SIZE(rt1318
1123 .dapm_routes = rt1318_dapm_routes,
1124 .num_dapm_routes = ARRAY_SIZE(rt1318_
1125 .use_pmdown_time = 1,
1126 .endianness = 1,
1127 };
1128
1129 static const struct regmap_config rt1318_regm
1130 .reg_bits = 32,
1131 .val_bits = 8,
1132 .readable_reg = rt1318_readable_regis
1133 .volatile_reg = rt1318_volatile_regis
1134 .max_register = 0x41001888,
1135 .reg_defaults = rt1318_reg,
1136 .num_reg_defaults = ARRAY_SIZE(rt1318
1137 .cache_type = REGCACHE_RBTREE,
1138 .use_single_read = true,
1139 .use_single_write = true,
1140 };
1141
1142 static const struct i2c_device_id rt1318_i2c_
1143 { "rt1318" },
1144 { }
1145 };
1146 MODULE_DEVICE_TABLE(i2c, rt1318_i2c_id);
1147
1148 static const struct of_device_id rt1318_of_ma
1149 { .compatible = "realtek,rt1318", },
1150 {},
1151 };
1152 MODULE_DEVICE_TABLE(of, rt1318_of_match);
1153
1154 #ifdef CONFIG_ACPI
1155 static const struct acpi_device_id rt1318_acp
1156 { "10EC1318", 0},
1157 { },
1158 };
1159 MODULE_DEVICE_TABLE(acpi, rt1318_acpi_match);
1160 #endif
1161
1162 static int rt1318_parse_dt(struct rt1318_priv
1163 {
1164 device_property_read_u32(dev, "realte
1165 &rt1318->pdata.init_r0_l);
1166 device_property_read_u32(dev, "realte
1167 &rt1318->pdata.init_r0_r);
1168
1169 return 0;
1170 }
1171
1172 static void rt1318_calibration_sequence(struc
1173 {
1174 regmap_write(rt1318->regmap, RT1318_C
1175 regmap_write(rt1318->regmap, RT1318_P
1176 regmap_write(rt1318->regmap, RT1318_S
1177 regmap_write(rt1318->regmap, RT1318_S
1178 regmap_write(rt1318->regmap, RT1318_S
1179 regmap_write(rt1318->regmap, RT1318_S
1180 regmap_write(rt1318->regmap, RT1318_S
1181 regmap_write(rt1318->regmap, RT1318_F
1182 regmap_write(rt1318->regmap, RT1318_T
1183 regmap_write(rt1318->regmap, RT1318_T
1184 regmap_write(rt1318->regmap, RT1318_T
1185 regmap_write(rt1318->regmap, RT1318_S
1186 }
1187
1188 static void rt1318_r0_calculate(struct rt1318
1189 {
1190 unsigned int r0_l, r0_l_byte0, r0_l_b
1191 unsigned int r0_r, r0_r_byte0, r0_r_b
1192 unsigned int r0_l_integer, r0_l_facto
1193 unsigned int format = 16777216; /* 2^
1194
1195 regmap_read(rt1318->regmap, RT1318_R0
1196 regmap_read(rt1318->regmap, RT1318_R0
1197 regmap_read(rt1318->regmap, RT1318_R0
1198 regmap_read(rt1318->regmap, RT1318_R0
1199 r0_l = r0_l_byte0 << 24 | r0_l_byte1
1200 r0_l_integer = format / r0_l;
1201 r0_l_factor = (format * 10) / r0_l -
1202
1203 regmap_read(rt1318->regmap, RT1318_R0
1204 regmap_read(rt1318->regmap, RT1318_R0
1205 regmap_read(rt1318->regmap, RT1318_R0
1206 regmap_read(rt1318->regmap, RT1318_R0
1207 r0_r = r0_r_byte0 << 24 | r0_r_byte1
1208 r0_r_integer = format / r0_r;
1209 r0_r_factor = (format * 10) / r0_r -
1210
1211 dev_dbg(rt1318->component->dev, "r0_l
1212 dev_dbg(rt1318->component->dev, "r0_r
1213 }
1214
1215 static void rt1318_r0_restore(struct rt1318_p
1216 {
1217 regmap_write(rt1318->regmap, RT1318_P
1218 (rt1318->pdata.init_r0_l >> 2
1219 regmap_write(rt1318->regmap, RT1318_P
1220 (rt1318->pdata.init_r0_l >> 1
1221 regmap_write(rt1318->regmap, RT1318_P
1222 (rt1318->pdata.init_r0_l >> 8
1223 regmap_write(rt1318->regmap, RT1318_P
1224 (rt1318->pdata.init_r0_l >> 0
1225 regmap_write(rt1318->regmap, RT1318_P
1226 (rt1318->pdata.init_r0_r >> 2
1227 regmap_write(rt1318->regmap, RT1318_P
1228 (rt1318->pdata.init_r0_r >> 1
1229 regmap_write(rt1318->regmap, RT1318_P
1230 (rt1318->pdata.init_r0_r >> 8
1231 regmap_write(rt1318->regmap, RT1318_P
1232 (rt1318->pdata.init_r0_r >> 0
1233 regmap_write(rt1318->regmap, RT1318_S
1234 regmap_write(rt1318->regmap, RT1318_S
1235 regmap_write(rt1318->regmap, RT1318_R
1236 regmap_write(rt1318->regmap, RT1318_R
1237 regmap_write(rt1318->regmap, RT1318_S
1238 regmap_write(rt1318->regmap, RT1318_S
1239 regmap_write(rt1318->regmap, RT1318_S
1240 regmap_write(rt1318->regmap, RT1318_T
1241 }
1242
1243 static int rt1318_calibrate(struct rt1318_pri
1244 {
1245 int chk_cnt = 30, count = 0;
1246 int val, val2;
1247
1248 regmap_write(rt1318->regmap, RT1318_P
1249 usleep_range(0, 10000);
1250 rt1318_calibration_sequence(rt1318);
1251
1252 while (count < chk_cnt) {
1253 msleep(100);
1254 regmap_read(rt1318->regmap, R
1255 regmap_read(rt1318->regmap, R
1256 val = (val >> 1) & 0x1;
1257 val2 = (val2 >> 1) & 0x1;
1258 if (val & val2) {
1259 dev_dbg(rt1318->compo
1260 break;
1261 }
1262 count++;
1263 if (count == chk_cnt) {
1264 regmap_write(rt1318->
1265 return RT1318_R0_CALI
1266 }
1267 }
1268 regmap_write(rt1318->regmap, RT1318_P
1269 regmap_read(rt1318->regmap, RT1318_R0
1270 regmap_read(rt1318->regmap, RT1318_R0
1271 if ((val & 0x1) & (val2 & 0x1))
1272 return RT1318_R0_IN_RANGE;
1273 else
1274 return RT1318_R0_OUT_OF_RANGE
1275 }
1276
1277 static void rt1318_calibration_work(struct wo
1278 {
1279 struct rt1318_priv *rt1318 =
1280 container_of(work, struct rt1
1281 int ret;
1282
1283 if (rt1318->pdata.init_r0_l && rt1318
1284 rt1318_r0_restore(rt1318);
1285 else {
1286 ret = rt1318_calibrate(rt1318
1287 if (ret == RT1318_R0_IN_RANGE
1288 rt1318_r0_calculate(r
1289 dev_dbg(rt1318->component->de
1290 }
1291 }
1292
1293 static int rt1318_i2c_probe(struct i2c_client
1294 {
1295 struct rt1318_platform_data *pdata =
1296 struct rt1318_priv *rt1318;
1297 int ret, val, val2, dev_id;
1298
1299 rt1318 = devm_kzalloc(&i2c->dev, size
1300 GFP_KERNEL);
1301 if (!rt1318)
1302 return -ENOMEM;
1303
1304 i2c_set_clientdata(i2c, rt1318);
1305
1306 if (pdata)
1307 rt1318->pdata = *pdata;
1308 else
1309 rt1318_parse_dt(rt1318, &i2c-
1310
1311 rt1318->regmap = devm_regmap_init_i2c
1312 if (IS_ERR(rt1318->regmap)) {
1313 ret = PTR_ERR(rt1318->regmap)
1314 dev_err(&i2c->dev, "Failed to
1315 ret);
1316 return ret;
1317 }
1318
1319 regmap_read(rt1318->regmap, RT1318_DE
1320 regmap_read(rt1318->regmap, RT1318_DE
1321 dev_id = (val << 8) | val2;
1322 if (dev_id != 0x6821) {
1323 dev_err(&i2c->dev,
1324 "Device with ID regis
1325 dev_id);
1326 return -ENODEV;
1327 }
1328
1329 ret = regmap_register_patch(rt1318->r
1330 ARRAY_SIZ
1331 if (ret != 0)
1332 dev_warn(&i2c->dev, "Failed t
1333
1334 INIT_WORK(&rt1318->cali_work, rt1318_
1335
1336 return devm_snd_soc_register_componen
1337 &soc_component_dev_rt1318, rt
1338 }
1339
1340 static struct i2c_driver rt1318_i2c_driver =
1341 .driver = {
1342 .name = "rt1318",
1343 .of_match_table = of_match_pt
1344 .acpi_match_table = ACPI_PTR(
1345 },
1346 .probe = rt1318_i2c_probe,
1347 .id_table = rt1318_i2c_id,
1348 };
1349 module_i2c_driver(rt1318_i2c_driver);
1350
1351 MODULE_DESCRIPTION("ASoC RT1318 driver");
1352 MODULE_AUTHOR("Jack Yu <jack.yu@realtek.com>"
1353 MODULE_LICENSE("GPL");
1354
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