1 // SPDX-License-Identifier: GPL-2.0-only
2 //
3 // rt1019.c -- RT1019 ALSA SoC audio amplifier driver
4 // Author: Jack Yu <jack.yu@realtek.com>
5 //
6 // Copyright(c) 2021 Realtek Semiconductor Corp.
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
30 #include "rl6231.h"
31 #include "rt1019.h"
32
33 static const struct reg_default rt1019_reg[] = {
34 { 0x0000, 0x00 },
35 { 0x0011, 0x04 },
36 { 0x0013, 0x00 },
37 { 0x0019, 0x30 },
38 { 0x001b, 0x01 },
39 { 0x005c, 0x00 },
40 { 0x005e, 0x10 },
41 { 0x005f, 0xec },
42 { 0x0061, 0x10 },
43 { 0x0062, 0x19 },
44 { 0x0066, 0x08 },
45 { 0x0100, 0x80 },
46 { 0x0100, 0x51 },
47 { 0x0102, 0x23 },
48 { 0x0311, 0x00 },
49 { 0x0312, 0x3e },
50 { 0x0313, 0x86 },
51 { 0x0400, 0x03 },
52 { 0x0401, 0x02 },
53 { 0x0402, 0x01 },
54 { 0x0504, 0xff },
55 { 0x0505, 0x24 },
56 { 0x0b00, 0x50 },
57 { 0x0b01, 0xc3 },
58 };
59
rt1019_volatile_register(struct device * dev,unsigned int reg)60 static bool rt1019_volatile_register(struct device *dev, unsigned int reg)
61 {
62 switch (reg) {
63 case RT1019_PWR_STRP_2:
64 case RT1019_VER_ID:
65 case RT1019_VEND_ID_1:
66 case RT1019_VEND_ID_2:
67 case RT1019_DEV_ID_1:
68 case RT1019_DEV_ID_2:
69 return true;
70
71 default:
72 return false;
73 }
74 }
75
rt1019_readable_register(struct device * dev,unsigned int reg)76 static bool rt1019_readable_register(struct device *dev, unsigned int reg)
77 {
78 switch (reg) {
79 case RT1019_RESET:
80 case RT1019_IDS_CTRL:
81 case RT1019_ASEL_CTRL:
82 case RT1019_PWR_STRP_2:
83 case RT1019_BEEP_TONE:
84 case RT1019_VER_ID:
85 case RT1019_VEND_ID_1:
86 case RT1019_VEND_ID_2:
87 case RT1019_DEV_ID_1:
88 case RT1019_DEV_ID_2:
89 case RT1019_SDB_CTRL:
90 case RT1019_CLK_TREE_1:
91 case RT1019_CLK_TREE_2:
92 case RT1019_CLK_TREE_3:
93 case RT1019_PLL_1:
94 case RT1019_PLL_2:
95 case RT1019_PLL_3:
96 case RT1019_TDM_1:
97 case RT1019_TDM_2:
98 case RT1019_TDM_3:
99 case RT1019_DMIX_MONO_1:
100 case RT1019_DMIX_MONO_2:
101 case RT1019_BEEP_1:
102 case RT1019_BEEP_2:
103 return true;
104 default:
105 return false;
106 }
107 }
108
109 static const DECLARE_TLV_DB_SCALE(dac_vol_tlv, -9525, 75, 0);
110
111 static const char * const rt1019_din_source_select[] = {
112 "Left",
113 "Right",
114 "Left + Right average",
115 };
116
117 static SOC_ENUM_SINGLE_DECL(rt1019_mono_lr_sel, RT1019_IDS_CTRL, 0,
118 rt1019_din_source_select);
119
120 static const struct snd_kcontrol_new rt1019_snd_controls[] = {
121 SOC_SINGLE_TLV("DAC Playback Volume", RT1019_DMIX_MONO_1, 0,
122 127, 0, dac_vol_tlv),
123 SOC_ENUM("Mono LR Select", rt1019_mono_lr_sel),
124 };
125
r1019_dac_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)126 static int r1019_dac_event(struct snd_soc_dapm_widget *w,
127 struct snd_kcontrol *kcontrol, int event)
128 {
129 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
130
131 switch (event) {
132 case SND_SOC_DAPM_PRE_PMU:
133 snd_soc_component_write(component, RT1019_SDB_CTRL, 0xb);
134 break;
135 case SND_SOC_DAPM_POST_PMD:
136 snd_soc_component_write(component, RT1019_SDB_CTRL, 0xa);
137 break;
138 default:
139 break;
140 }
141
142 return 0;
143 }
144
145 static const struct snd_soc_dapm_widget rt1019_dapm_widgets[] = {
146 SND_SOC_DAPM_AIF_IN("AIFRX", "AIF Playback", 0, SND_SOC_NOPM, 0, 0),
147 SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0,
148 r1019_dac_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
149 SND_SOC_DAPM_OUTPUT("SPO"),
150 };
151
152 static const struct snd_soc_dapm_route rt1019_dapm_routes[] = {
153 { "DAC", NULL, "AIFRX" },
154 { "SPO", NULL, "DAC" },
155 };
156
rt1019_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)157 static int rt1019_hw_params(struct snd_pcm_substream *substream,
158 struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
159 {
160 struct snd_soc_component *component = dai->component;
161 struct rt1019_priv *rt1019 = snd_soc_component_get_drvdata(component);
162 int pre_div, bclk_ms, frame_size;
163 unsigned int val_len = 0, sys_div_da_filter = 0;
164 unsigned int sys_dac_osr = 0, sys_fifo_clk = 0;
165 unsigned int sys_clk_cal = 0, sys_asrc_in = 0;
166
167 rt1019->lrck = params_rate(params);
168 pre_div = rl6231_get_clk_info(rt1019->sysclk, rt1019->lrck);
169 if (pre_div < 0) {
170 dev_err(component->dev, "Unsupported clock setting\n");
171 return -EINVAL;
172 }
173
174 frame_size = snd_soc_params_to_frame_size(params);
175 if (frame_size < 0) {
176 dev_err(component->dev, "Unsupported frame size: %d\n", frame_size);
177 return -EINVAL;
178 }
179
180 bclk_ms = frame_size > 32;
181 rt1019->bclk = rt1019->lrck * (32 << bclk_ms);
182
183 dev_dbg(dai->dev, "bclk is %dHz and lrck is %dHz\n",
184 rt1019->bclk, rt1019->lrck);
185 dev_dbg(dai->dev, "bclk_ms is %d and pre_div is %d for iis %d\n",
186 bclk_ms, pre_div, dai->id);
187
188 switch (pre_div) {
189 case 0:
190 sys_div_da_filter = RT1019_SYS_DIV_DA_FIL_DIV1;
191 sys_dac_osr = RT1019_SYS_DA_OSR_DIV1;
192 sys_asrc_in = RT1019_ASRC_256FS_DIV1;
193 sys_fifo_clk = RT1019_SEL_FIFO_DIV1;
194 sys_clk_cal = RT1019_SEL_CLK_CAL_DIV1;
195 break;
196 case 1:
197 sys_div_da_filter = RT1019_SYS_DIV_DA_FIL_DIV2;
198 sys_dac_osr = RT1019_SYS_DA_OSR_DIV2;
199 sys_asrc_in = RT1019_ASRC_256FS_DIV2;
200 sys_fifo_clk = RT1019_SEL_FIFO_DIV2;
201 sys_clk_cal = RT1019_SEL_CLK_CAL_DIV2;
202 break;
203 case 3:
204 sys_div_da_filter = RT1019_SYS_DIV_DA_FIL_DIV4;
205 sys_dac_osr = RT1019_SYS_DA_OSR_DIV4;
206 sys_asrc_in = RT1019_ASRC_256FS_DIV4;
207 sys_fifo_clk = RT1019_SEL_FIFO_DIV4;
208 sys_clk_cal = RT1019_SEL_CLK_CAL_DIV4;
209 break;
210 default:
211 return -EINVAL;
212 }
213
214 switch (params_width(params)) {
215 case 16:
216 break;
217 case 20:
218 val_len = RT1019_I2S_DL_20;
219 break;
220 case 24:
221 val_len = RT1019_I2S_DL_24;
222 break;
223 case 32:
224 val_len = RT1019_I2S_DL_32;
225 break;
226 case 8:
227 val_len = RT1019_I2S_DL_8;
228 break;
229 default:
230 return -EINVAL;
231 }
232
233 snd_soc_component_update_bits(component, RT1019_TDM_2, RT1019_I2S_DL_MASK,
234 val_len);
235 snd_soc_component_update_bits(component, RT1019_CLK_TREE_1,
236 RT1019_SEL_FIFO_MASK, sys_fifo_clk);
237 snd_soc_component_update_bits(component, RT1019_CLK_TREE_2,
238 RT1019_SYS_DIV_DA_FIL_MASK | RT1019_SYS_DA_OSR_MASK |
239 RT1019_ASRC_256FS_MASK, sys_div_da_filter | sys_dac_osr |
240 sys_asrc_in);
241 snd_soc_component_update_bits(component, RT1019_CLK_TREE_3,
242 RT1019_SEL_CLK_CAL_MASK, sys_clk_cal);
243
244 return 0;
245 }
246
rt1019_set_dai_fmt(struct snd_soc_dai * dai,unsigned int fmt)247 static int rt1019_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
248 {
249 struct snd_soc_component *component = dai->component;
250 unsigned int reg_val = 0, reg_val2 = 0;
251
252 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
253 case SND_SOC_DAIFMT_NB_NF:
254 break;
255 case SND_SOC_DAIFMT_IB_NF:
256 reg_val2 |= RT1019_TDM_BCLK_INV;
257 break;
258 default:
259 return -EINVAL;
260 }
261
262 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
263 case SND_SOC_DAIFMT_I2S:
264 break;
265
266 case SND_SOC_DAIFMT_LEFT_J:
267 reg_val |= RT1019_I2S_DF_LEFT;
268 break;
269
270 case SND_SOC_DAIFMT_DSP_A:
271 reg_val |= RT1019_I2S_DF_PCM_A_R;
272 break;
273
274 case SND_SOC_DAIFMT_DSP_B:
275 reg_val |= RT1019_I2S_DF_PCM_B_R;
276 break;
277
278 default:
279 return -EINVAL;
280 }
281
282 snd_soc_component_update_bits(component, RT1019_TDM_2,
283 RT1019_I2S_DF_MASK, reg_val);
284 snd_soc_component_update_bits(component, RT1019_TDM_1,
285 RT1019_TDM_BCLK_MASK, reg_val2);
286
287 return 0;
288 }
289
rt1019_set_dai_sysclk(struct snd_soc_dai * dai,int clk_id,unsigned int freq,int dir)290 static int rt1019_set_dai_sysclk(struct snd_soc_dai *dai,
291 int clk_id, unsigned int freq, int dir)
292 {
293 struct snd_soc_component *component = dai->component;
294 struct rt1019_priv *rt1019 = snd_soc_component_get_drvdata(component);
295 unsigned int reg_val = 0;
296
297 if (freq == rt1019->sysclk && clk_id == rt1019->sysclk_src)
298 return 0;
299
300 switch (clk_id) {
301 case RT1019_SCLK_S_BCLK:
302 reg_val |= RT1019_CLK_SYS_PRE_SEL_BCLK;
303 break;
304
305 case RT1019_SCLK_S_PLL:
306 reg_val |= RT1019_CLK_SYS_PRE_SEL_PLL;
307 break;
308
309 default:
310 dev_err(component->dev, "Invalid clock id (%d)\n", clk_id);
311 return -EINVAL;
312 }
313
314 rt1019->sysclk = freq;
315 rt1019->sysclk_src = clk_id;
316
317 dev_dbg(dai->dev, "Sysclk is %dHz and clock id is %d\n", freq, clk_id);
318
319 snd_soc_component_update_bits(component, RT1019_CLK_TREE_1,
320 RT1019_CLK_SYS_PRE_SEL_MASK, reg_val);
321
322 return 0;
323 }
324
rt1019_set_dai_pll(struct snd_soc_dai * dai,int pll_id,int source,unsigned int freq_in,unsigned int freq_out)325 static int rt1019_set_dai_pll(struct snd_soc_dai *dai, int pll_id, int source,
326 unsigned int freq_in, unsigned int freq_out)
327 {
328 struct snd_soc_component *component = dai->component;
329 struct rt1019_priv *rt1019 = snd_soc_component_get_drvdata(component);
330 struct rl6231_pll_code pll_code;
331 int ret;
332
333 if (!freq_in || !freq_out) {
334 dev_dbg(component->dev, "PLL disabled\n");
335 rt1019->pll_in = 0;
336 rt1019->pll_out = 0;
337 return 0;
338 }
339
340 if (source == rt1019->pll_src && freq_in == rt1019->pll_in &&
341 freq_out == rt1019->pll_out)
342 return 0;
343
344 switch (source) {
345 case RT1019_PLL_S_BCLK:
346 snd_soc_component_update_bits(component, RT1019_CLK_TREE_1,
347 RT1019_PLL_SRC_MASK, RT1019_PLL_SRC_SEL_BCLK);
348 break;
349
350 case RT1019_PLL_S_RC25M:
351 snd_soc_component_update_bits(component, RT1019_CLK_TREE_1,
352 RT1019_PLL_SRC_MASK, RT1019_PLL_SRC_SEL_RC);
353 break;
354
355 default:
356 dev_err(component->dev, "Unknown PLL source %d\n", source);
357 return -EINVAL;
358 }
359
360 ret = rl6231_pll_calc(freq_in, freq_out, &pll_code);
361 if (ret < 0) {
362 dev_err(component->dev, "Unsupport input clock %d\n", freq_in);
363 return ret;
364 }
365
366 dev_dbg(component->dev, "bypass=%d m=%d n=%d k=%d\n",
367 pll_code.m_bp, (pll_code.m_bp ? 0 : pll_code.m_code),
368 pll_code.n_code, pll_code.k_code);
369
370 snd_soc_component_update_bits(component, RT1019_PWR_STRP_2,
371 RT1019_AUTO_BITS_SEL_MASK | RT1019_AUTO_CLK_SEL_MASK,
372 RT1019_AUTO_BITS_SEL_MANU | RT1019_AUTO_CLK_SEL_MANU);
373 snd_soc_component_update_bits(component, RT1019_PLL_1,
374 RT1019_PLL_M_MASK | RT1019_PLL_M_BP_MASK | RT1019_PLL_Q_8_8_MASK,
375 ((pll_code.m_bp ? 0 : pll_code.m_code) << RT1019_PLL_M_SFT) |
376 (pll_code.m_bp << RT1019_PLL_M_BP_SFT) |
377 ((pll_code.n_code >> 8) & RT1019_PLL_Q_8_8_MASK));
378 snd_soc_component_update_bits(component, RT1019_PLL_2,
379 RT1019_PLL_Q_7_0_MASK, pll_code.n_code & RT1019_PLL_Q_7_0_MASK);
380 snd_soc_component_update_bits(component, RT1019_PLL_3,
381 RT1019_PLL_K_MASK, pll_code.k_code);
382
383 rt1019->pll_in = freq_in;
384 rt1019->pll_out = freq_out;
385 rt1019->pll_src = source;
386
387 return 0;
388 }
389
rt1019_set_tdm_slot(struct snd_soc_dai * dai,unsigned int tx_mask,unsigned int rx_mask,int slots,int slot_width)390 static int rt1019_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
391 unsigned int rx_mask, int slots, int slot_width)
392 {
393 struct snd_soc_component *component = dai->component;
394 unsigned int cn = 0, cl = 0, rx_slotnum;
395 int ret = 0, first_bit;
396
397 switch (slots) {
398 case 4:
399 cn = RT1019_I2S_TX_4CH;
400 break;
401 case 6:
402 cn = RT1019_I2S_TX_6CH;
403 break;
404 case 8:
405 cn = RT1019_I2S_TX_8CH;
406 break;
407 case 2:
408 break;
409 default:
410 return -EINVAL;
411 }
412
413 switch (slot_width) {
414 case 20:
415 cl = RT1019_TDM_CL_20;
416 break;
417 case 24:
418 cl = RT1019_TDM_CL_24;
419 break;
420 case 32:
421 cl = RT1019_TDM_CL_32;
422 break;
423 case 8:
424 cl = RT1019_TDM_CL_8;
425 break;
426 case 16:
427 break;
428 default:
429 return -EINVAL;
430 }
431
432 /* Rx slot configuration */
433 rx_slotnum = hweight_long(rx_mask);
434 if (rx_slotnum != 1) {
435 ret = -EINVAL;
436 dev_err(component->dev, "too many rx slots or zero slot\n");
437 goto _set_tdm_err_;
438 }
439 /* This is an assumption that the system sends stereo audio to the
440 * amplifier typically. And the stereo audio is placed in slot 0/2/4/6
441 * as the starting slot. The users could select the channel from
442 * L/R/L+R by "Mono LR Select" control.
443 */
444 first_bit = __ffs(rx_mask);
445 switch (first_bit) {
446 case 0:
447 case 2:
448 case 4:
449 case 6:
450 snd_soc_component_update_bits(component,
451 RT1019_TDM_3,
452 RT1019_TDM_I2S_TX_L_DAC1_1_MASK |
453 RT1019_TDM_I2S_TX_R_DAC1_1_MASK,
454 (first_bit << RT1019_TDM_I2S_TX_L_DAC1_1_SFT) |
455 ((first_bit + 1) << RT1019_TDM_I2S_TX_R_DAC1_1_SFT));
456 break;
457 case 1:
458 case 3:
459 case 5:
460 case 7:
461 snd_soc_component_update_bits(component,
462 RT1019_TDM_3,
463 RT1019_TDM_I2S_TX_L_DAC1_1_MASK |
464 RT1019_TDM_I2S_TX_R_DAC1_1_MASK,
465 ((first_bit - 1) << RT1019_TDM_I2S_TX_L_DAC1_1_SFT) |
466 (first_bit << RT1019_TDM_I2S_TX_R_DAC1_1_SFT));
467 break;
468 default:
469 ret = -EINVAL;
470 goto _set_tdm_err_;
471 }
472
473 snd_soc_component_update_bits(component, RT1019_TDM_1,
474 RT1019_TDM_CL_MASK, cl);
475 snd_soc_component_update_bits(component, RT1019_TDM_2,
476 RT1019_I2S_CH_TX_MASK, cn);
477
478 _set_tdm_err_:
479 return ret;
480 }
481
rt1019_probe(struct snd_soc_component * component)482 static int rt1019_probe(struct snd_soc_component *component)
483 {
484 struct rt1019_priv *rt1019 = snd_soc_component_get_drvdata(component);
485
486 rt1019->component = component;
487 snd_soc_component_write(component, RT1019_SDB_CTRL, 0xa);
488
489 return 0;
490 }
491
492 #define RT1019_STEREO_RATES SNDRV_PCM_RATE_8000_192000
493 #define RT1019_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
494 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S8)
495
496 static const struct snd_soc_dai_ops rt1019_aif_dai_ops = {
497 .hw_params = rt1019_hw_params,
498 .set_fmt = rt1019_set_dai_fmt,
499 .set_sysclk = rt1019_set_dai_sysclk,
500 .set_pll = rt1019_set_dai_pll,
501 .set_tdm_slot = rt1019_set_tdm_slot,
502 };
503
504 static struct snd_soc_dai_driver rt1019_dai[] = {
505 {
506 .name = "rt1019-aif",
507 .id = 0,
508 .playback = {
509 .stream_name = "AIF Playback",
510 .channels_min = 1,
511 .channels_max = 2,
512 .rates = RT1019_STEREO_RATES,
513 .formats = RT1019_FORMATS,
514 },
515 .ops = &rt1019_aif_dai_ops,
516 }
517 };
518
519 static const struct snd_soc_component_driver soc_component_dev_rt1019 = {
520 .probe = rt1019_probe,
521 .controls = rt1019_snd_controls,
522 .num_controls = ARRAY_SIZE(rt1019_snd_controls),
523 .dapm_widgets = rt1019_dapm_widgets,
524 .num_dapm_widgets = ARRAY_SIZE(rt1019_dapm_widgets),
525 .dapm_routes = rt1019_dapm_routes,
526 .num_dapm_routes = ARRAY_SIZE(rt1019_dapm_routes),
527 .non_legacy_dai_naming = 1,
528 };
529
530 static const struct regmap_config rt1019_regmap = {
531 .reg_bits = 16,
532 .val_bits = 8,
533 .use_single_read = true,
534 .use_single_write = true,
535 .max_register = RT1019_BEEP_2,
536 .volatile_reg = rt1019_volatile_register,
537 .readable_reg = rt1019_readable_register,
538 .cache_type = REGCACHE_RBTREE,
539 .reg_defaults = rt1019_reg,
540 .num_reg_defaults = ARRAY_SIZE(rt1019_reg),
541 };
542
543 static const struct i2c_device_id rt1019_i2c_id[] = {
544 { "rt1019", 0 },
545 { }
546 };
547 MODULE_DEVICE_TABLE(i2c, rt1019_i2c_id);
548
549 static const struct of_device_id rt1019_of_match[] = {
550 { .compatible = "realtek,rt1019", },
551 {},
552 };
553 MODULE_DEVICE_TABLE(of, rt1019_of_match);
554
555 #ifdef CONFIG_ACPI
556 static const struct acpi_device_id rt1019_acpi_match[] = {
557 { "10EC1019", 0},
558 { },
559 };
560 MODULE_DEVICE_TABLE(acpi, rt1019_acpi_match);
561 #endif
562
rt1019_i2c_probe(struct i2c_client * i2c,const struct i2c_device_id * id)563 static int rt1019_i2c_probe(struct i2c_client *i2c,
564 const struct i2c_device_id *id)
565 {
566 struct rt1019_priv *rt1019;
567 int ret;
568 unsigned int val, val2, dev_id;
569
570 rt1019 = devm_kzalloc(&i2c->dev, sizeof(struct rt1019_priv),
571 GFP_KERNEL);
572 if (!rt1019)
573 return -ENOMEM;
574
575 i2c_set_clientdata(i2c, rt1019);
576
577 rt1019->regmap = devm_regmap_init_i2c(i2c, &rt1019_regmap);
578 if (IS_ERR(rt1019->regmap)) {
579 ret = PTR_ERR(rt1019->regmap);
580 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
581 ret);
582 return ret;
583 }
584
585 regmap_read(rt1019->regmap, RT1019_DEV_ID_1, &val);
586 regmap_read(rt1019->regmap, RT1019_DEV_ID_2, &val2);
587 dev_id = val << 8 | val2;
588 if (dev_id != RT1019_DEVICE_ID_VAL && dev_id != RT1019_DEVICE_ID_VAL2) {
589 dev_err(&i2c->dev,
590 "Device with ID register 0x%x is not rt1019\n", dev_id);
591 return -ENODEV;
592 }
593
594 return devm_snd_soc_register_component(&i2c->dev,
595 &soc_component_dev_rt1019, rt1019_dai, ARRAY_SIZE(rt1019_dai));
596 }
597
598 static struct i2c_driver rt1019_i2c_driver = {
599 .driver = {
600 .name = "rt1019",
601 .of_match_table = of_match_ptr(rt1019_of_match),
602 .acpi_match_table = ACPI_PTR(rt1019_acpi_match),
603 },
604 .probe = rt1019_i2c_probe,
605 .id_table = rt1019_i2c_id,
606 };
607 module_i2c_driver(rt1019_i2c_driver);
608
609 MODULE_DESCRIPTION("ASoC RT1019 driver");
610 MODULE_AUTHOR("Jack Yu <jack.yu@realtek.com>");
611 MODULE_LICENSE("GPL v2");
612