1 // SPDX-License-Identifier: GPL-2.0+
2 //
3 // Copyright (C) 2015 - 2016 Samsung Electronics Co., Ltd.
4 //
5 // Authors: Inha Song <ideal.song@samsung.com>
6 // Sylwester Nawrocki <s.nawrocki@samsung.com>
7
8 #include <linux/clk.h>
9 #include <linux/gpio.h>
10 #include <linux/gpio/consumer.h>
11 #include <linux/module.h>
12 #include <linux/of.h>
13 #include <sound/pcm_params.h>
14 #include <sound/soc.h>
15
16 #include "i2s.h"
17 #include "../codecs/wm5110.h"
18
19 /*
20 * The source clock is XCLKOUT with its mux set to the external fixed rate
21 * oscillator (XXTI).
22 */
23 #define MCLK_RATE 24000000U
24
25 #define TM2_DAI_AIF1 0
26 #define TM2_DAI_AIF2 1
27
28 struct tm2_machine_priv {
29 struct snd_soc_component *component;
30 unsigned int sysclk_rate;
31 struct gpio_desc *gpio_mic_bias;
32 };
33
34 static int tm2_start_sysclk(struct snd_soc_card *card)
35 {
36 struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(card);
37 struct snd_soc_component *component = priv->component;
38 int ret;
39
40 ret = snd_soc_component_set_pll(component, WM5110_FLL1_REFCLK,
41 ARIZONA_FLL_SRC_MCLK1,
42 MCLK_RATE,
43 priv->sysclk_rate);
44 if (ret < 0) {
45 dev_err(component->dev, "Failed to set FLL1 source: %d\n", ret);
46 return ret;
47 }
48
49 ret = snd_soc_component_set_pll(component, WM5110_FLL1,
50 ARIZONA_FLL_SRC_MCLK1,
51 MCLK_RATE,
52 priv->sysclk_rate);
53 if (ret < 0) {
54 dev_err(component->dev, "Failed to start FLL1: %d\n", ret);
55 return ret;
56 }
57
58 ret = snd_soc_component_set_sysclk(component, ARIZONA_CLK_SYSCLK,
59 ARIZONA_CLK_SRC_FLL1,
60 priv->sysclk_rate,
61 SND_SOC_CLOCK_IN);
62 if (ret < 0) {
63 dev_err(component->dev, "Failed to set SYSCLK source: %d\n", ret);
64 return ret;
65 }
66
67 return 0;
68 }
69
70 static int tm2_stop_sysclk(struct snd_soc_card *card)
71 {
72 struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(card);
73 struct snd_soc_component *component = priv->component;
74 int ret;
75
76 ret = snd_soc_component_set_pll(component, WM5110_FLL1, 0, 0, 0);
77 if (ret < 0) {
78 dev_err(component->dev, "Failed to stop FLL1: %d\n", ret);
79 return ret;
80 }
81
82 ret = snd_soc_component_set_sysclk(component, ARIZONA_CLK_SYSCLK,
83 ARIZONA_CLK_SRC_FLL1, 0, 0);
84 if (ret < 0) {
85 dev_err(component->dev, "Failed to stop SYSCLK: %d\n", ret);
86 return ret;
87 }
88
89 return 0;
90 }
91
92 static int tm2_aif1_hw_params(struct snd_pcm_substream *substream,
93 struct snd_pcm_hw_params *params)
94 {
95 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
96 struct snd_soc_component *component = snd_soc_rtd_to_codec(rtd, 0)->component;
97 struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(rtd->card);
98
99 switch (params_rate(params)) {
100 case 4000:
101 case 8000:
102 case 12000:
103 case 16000:
104 case 24000:
105 case 32000:
106 case 48000:
107 case 96000:
108 case 192000:
109 /* Highest possible SYSCLK frequency: 147.456MHz */
110 priv->sysclk_rate = 147456000U;
111 break;
112 case 11025:
113 case 22050:
114 case 44100:
115 case 88200:
116 case 176400:
117 /* Highest possible SYSCLK frequency: 135.4752 MHz */
118 priv->sysclk_rate = 135475200U;
119 break;
120 default:
121 dev_err(component->dev, "Not supported sample rate: %d\n",
122 params_rate(params));
123 return -EINVAL;
124 }
125
126 return tm2_start_sysclk(rtd->card);
127 }
128
129 static const struct snd_soc_ops tm2_aif1_ops = {
130 .hw_params = tm2_aif1_hw_params,
131 };
132
133 static int tm2_aif2_hw_params(struct snd_pcm_substream *substream,
134 struct snd_pcm_hw_params *params)
135 {
136 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
137 struct snd_soc_component *component = snd_soc_rtd_to_codec(rtd, 0)->component;
138 unsigned int asyncclk_rate;
139 int ret;
140
141 switch (params_rate(params)) {
142 case 8000:
143 case 12000:
144 case 16000:
145 /* Highest possible ASYNCCLK frequency: 49.152MHz */
146 asyncclk_rate = 49152000U;
147 break;
148 case 11025:
149 /* Highest possible ASYNCCLK frequency: 45.1584 MHz */
150 asyncclk_rate = 45158400U;
151 break;
152 default:
153 dev_err(component->dev, "Not supported sample rate: %d\n",
154 params_rate(params));
155 return -EINVAL;
156 }
157
158 ret = snd_soc_component_set_pll(component, WM5110_FLL2_REFCLK,
159 ARIZONA_FLL_SRC_MCLK1,
160 MCLK_RATE,
161 asyncclk_rate);
162 if (ret < 0) {
163 dev_err(component->dev, "Failed to set FLL2 source: %d\n", ret);
164 return ret;
165 }
166
167 ret = snd_soc_component_set_pll(component, WM5110_FLL2,
168 ARIZONA_FLL_SRC_MCLK1,
169 MCLK_RATE,
170 asyncclk_rate);
171 if (ret < 0) {
172 dev_err(component->dev, "Failed to start FLL2: %d\n", ret);
173 return ret;
174 }
175
176 ret = snd_soc_component_set_sysclk(component, ARIZONA_CLK_ASYNCCLK,
177 ARIZONA_CLK_SRC_FLL2,
178 asyncclk_rate,
179 SND_SOC_CLOCK_IN);
180 if (ret < 0) {
181 dev_err(component->dev, "Failed to set ASYNCCLK source: %d\n", ret);
182 return ret;
183 }
184
185 return 0;
186 }
187
188 static int tm2_aif2_hw_free(struct snd_pcm_substream *substream)
189 {
190 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
191 struct snd_soc_component *component = snd_soc_rtd_to_codec(rtd, 0)->component;
192 int ret;
193
194 /* disable FLL2 */
195 ret = snd_soc_component_set_pll(component, WM5110_FLL2, ARIZONA_FLL_SRC_MCLK1,
196 0, 0);
197 if (ret < 0)
198 dev_err(component->dev, "Failed to stop FLL2: %d\n", ret);
199
200 return ret;
201 }
202
203 static const struct snd_soc_ops tm2_aif2_ops = {
204 .hw_params = tm2_aif2_hw_params,
205 .hw_free = tm2_aif2_hw_free,
206 };
207
208 static int tm2_hdmi_hw_params(struct snd_pcm_substream *substream,
209 struct snd_pcm_hw_params *params)
210 {
211 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
212 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
213 unsigned int bfs;
214 int bitwidth, ret;
215
216 bitwidth = snd_pcm_format_width(params_format(params));
217 if (bitwidth < 0) {
218 dev_err(rtd->card->dev, "Invalid bit-width: %d\n", bitwidth);
219 return bitwidth;
220 }
221
222 switch (bitwidth) {
223 case 48:
224 bfs = 64;
225 break;
226 case 16:
227 bfs = 32;
228 break;
229 default:
230 dev_err(rtd->card->dev, "Unsupported bit-width: %d\n", bitwidth);
231 return -EINVAL;
232 }
233
234 switch (params_rate(params)) {
235 case 48000:
236 case 96000:
237 case 192000:
238 break;
239 default:
240 dev_err(rtd->card->dev, "Unsupported sample rate: %d\n",
241 params_rate(params));
242 return -EINVAL;
243 }
244
245 ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_OPCLK,
246 0, SAMSUNG_I2S_OPCLK_PCLK);
247 if (ret < 0)
248 return ret;
249
250 ret = snd_soc_dai_set_clkdiv(cpu_dai, SAMSUNG_I2S_DIV_BCLK, bfs);
251 if (ret < 0)
252 return ret;
253
254 return 0;
255 }
256
257 static const struct snd_soc_ops tm2_hdmi_ops = {
258 .hw_params = tm2_hdmi_hw_params,
259 };
260
261 static int tm2_mic_bias(struct snd_soc_dapm_widget *w,
262 struct snd_kcontrol *kcontrol, int event)
263 {
264 struct snd_soc_card *card = w->dapm->card;
265 struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(card);
266
267 switch (event) {
268 case SND_SOC_DAPM_PRE_PMU:
269 gpiod_set_value_cansleep(priv->gpio_mic_bias, 1);
270 break;
271 case SND_SOC_DAPM_POST_PMD:
272 gpiod_set_value_cansleep(priv->gpio_mic_bias, 0);
273 break;
274 }
275
276 return 0;
277 }
278
279 static int tm2_set_bias_level(struct snd_soc_card *card,
280 struct snd_soc_dapm_context *dapm,
281 enum snd_soc_bias_level level)
282 {
283 struct snd_soc_pcm_runtime *rtd;
284
285 rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
286
287 if (dapm->dev != snd_soc_rtd_to_codec(rtd, 0)->dev)
288 return 0;
289
290 switch (level) {
291 case SND_SOC_BIAS_STANDBY:
292 if (card->dapm.bias_level == SND_SOC_BIAS_OFF)
293 tm2_start_sysclk(card);
294 break;
295 case SND_SOC_BIAS_OFF:
296 tm2_stop_sysclk(card);
297 break;
298 default:
299 break;
300 }
301
302 return 0;
303 }
304
305 static struct snd_soc_aux_dev tm2_speaker_amp_dev;
306
307 static int tm2_late_probe(struct snd_soc_card *card)
308 {
309 struct tm2_machine_priv *priv = snd_soc_card_get_drvdata(card);
310 unsigned int ch_map[] = { 0, 1 };
311 struct snd_soc_dai *amp_pdm_dai;
312 struct snd_soc_pcm_runtime *rtd;
313 struct snd_soc_dai *aif1_dai;
314 struct snd_soc_dai *aif2_dai;
315 int ret;
316
317 rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[TM2_DAI_AIF1]);
318 aif1_dai = snd_soc_rtd_to_codec(rtd, 0);
319 priv->component = snd_soc_rtd_to_codec(rtd, 0)->component;
320
321 ret = snd_soc_dai_set_sysclk(aif1_dai, ARIZONA_CLK_SYSCLK, 0, 0);
322 if (ret < 0) {
323 dev_err(aif1_dai->dev, "Failed to set SYSCLK: %d\n", ret);
324 return ret;
325 }
326
327 rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[TM2_DAI_AIF2]);
328 aif2_dai = snd_soc_rtd_to_codec(rtd, 0);
329
330 ret = snd_soc_dai_set_sysclk(aif2_dai, ARIZONA_CLK_ASYNCCLK, 0, 0);
331 if (ret < 0) {
332 dev_err(aif2_dai->dev, "Failed to set ASYNCCLK: %d\n", ret);
333 return ret;
334 }
335
336 amp_pdm_dai = snd_soc_find_dai(&tm2_speaker_amp_dev.dlc);
337 if (!amp_pdm_dai)
338 return -ENODEV;
339
340 /* Set the MAX98504 V/I sense PDM Tx DAI channel mapping */
341 ret = snd_soc_dai_set_channel_map(amp_pdm_dai, ARRAY_SIZE(ch_map),
342 ch_map, 0, NULL);
343 if (ret < 0)
344 return ret;
345
346 ret = snd_soc_dai_set_tdm_slot(amp_pdm_dai, 0x3, 0x0, 2, 16);
347 if (ret < 0)
348 return ret;
349
350 return 0;
351 }
352
353 static const struct snd_kcontrol_new tm2_controls[] = {
354 SOC_DAPM_PIN_SWITCH("HP"),
355 SOC_DAPM_PIN_SWITCH("SPK"),
356 SOC_DAPM_PIN_SWITCH("RCV"),
357 SOC_DAPM_PIN_SWITCH("VPS"),
358 SOC_DAPM_PIN_SWITCH("HDMI"),
359
360 SOC_DAPM_PIN_SWITCH("Main Mic"),
361 SOC_DAPM_PIN_SWITCH("Sub Mic"),
362 SOC_DAPM_PIN_SWITCH("Third Mic"),
363
364 SOC_DAPM_PIN_SWITCH("Headset Mic"),
365 };
366
367 static const struct snd_soc_dapm_widget tm2_dapm_widgets[] = {
368 SND_SOC_DAPM_HP("HP", NULL),
369 SND_SOC_DAPM_SPK("SPK", NULL),
370 SND_SOC_DAPM_SPK("RCV", NULL),
371 SND_SOC_DAPM_LINE("VPS", NULL),
372 SND_SOC_DAPM_LINE("HDMI", NULL),
373
374 SND_SOC_DAPM_MIC("Main Mic", tm2_mic_bias),
375 SND_SOC_DAPM_MIC("Sub Mic", NULL),
376 SND_SOC_DAPM_MIC("Third Mic", NULL),
377
378 SND_SOC_DAPM_MIC("Headset Mic", NULL),
379 };
380
381 static const struct snd_soc_component_driver tm2_component = {
382 .name = "tm2-audio",
383 };
384
385 static struct snd_soc_dai_driver tm2_ext_dai[] = {
386 {
387 .name = "Voice call",
388 .playback = {
389 .channels_min = 1,
390 .channels_max = 4,
391 .rate_min = 8000,
392 .rate_max = 48000,
393 .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |
394 SNDRV_PCM_RATE_48000),
395 .formats = SNDRV_PCM_FMTBIT_S16_LE,
396 },
397 .capture = {
398 .channels_min = 1,
399 .channels_max = 4,
400 .rate_min = 8000,
401 .rate_max = 48000,
402 .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |
403 SNDRV_PCM_RATE_48000),
404 .formats = SNDRV_PCM_FMTBIT_S16_LE,
405 },
406 },
407 {
408 .name = "Bluetooth",
409 .playback = {
410 .channels_min = 1,
411 .channels_max = 4,
412 .rate_min = 8000,
413 .rate_max = 16000,
414 .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000),
415 .formats = SNDRV_PCM_FMTBIT_S16_LE,
416 },
417 .capture = {
418 .channels_min = 1,
419 .channels_max = 2,
420 .rate_min = 8000,
421 .rate_max = 16000,
422 .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000),
423 .formats = SNDRV_PCM_FMTBIT_S16_LE,
424 },
425 },
426 };
427
428 SND_SOC_DAILINK_DEFS(aif1,
429 DAILINK_COMP_ARRAY(COMP_CPU(SAMSUNG_I2S_DAI)),
430 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm5110-aif1")),
431 DAILINK_COMP_ARRAY(COMP_EMPTY()));
432
433 SND_SOC_DAILINK_DEFS(voice,
434 DAILINK_COMP_ARRAY(COMP_CPU(SAMSUNG_I2S_DAI)),
435 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm5110-aif2")),
436 DAILINK_COMP_ARRAY(COMP_EMPTY()));
437
438 SND_SOC_DAILINK_DEFS(bt,
439 DAILINK_COMP_ARRAY(COMP_CPU(SAMSUNG_I2S_DAI)),
440 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm5110-aif3")),
441 DAILINK_COMP_ARRAY(COMP_EMPTY()));
442
443 SND_SOC_DAILINK_DEFS(hdmi,
444 DAILINK_COMP_ARRAY(COMP_EMPTY()),
445 DAILINK_COMP_ARRAY(COMP_EMPTY()),
446 DAILINK_COMP_ARRAY(COMP_EMPTY()));
447
448 static struct snd_soc_dai_link tm2_dai_links[] = {
449 {
450 .name = "WM5110 AIF1",
451 .stream_name = "HiFi Primary",
452 .ops = &tm2_aif1_ops,
453 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
454 SND_SOC_DAIFMT_CBM_CFM,
455 SND_SOC_DAILINK_REG(aif1),
456 }, {
457 .name = "WM5110 Voice",
458 .stream_name = "Voice call",
459 .ops = &tm2_aif2_ops,
460 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
461 SND_SOC_DAIFMT_CBM_CFM,
462 .ignore_suspend = 1,
463 SND_SOC_DAILINK_REG(voice),
464 }, {
465 .name = "WM5110 BT",
466 .stream_name = "Bluetooth",
467 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
468 SND_SOC_DAIFMT_CBM_CFM,
469 .ignore_suspend = 1,
470 SND_SOC_DAILINK_REG(bt),
471 }, {
472 .name = "HDMI",
473 .stream_name = "i2s1",
474 .ops = &tm2_hdmi_ops,
475 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
476 SND_SOC_DAIFMT_CBS_CFS,
477 SND_SOC_DAILINK_REG(hdmi),
478 }
479 };
480
481 static struct snd_soc_card tm2_card = {
482 .owner = THIS_MODULE,
483
484 .dai_link = tm2_dai_links,
485 .controls = tm2_controls,
486 .num_controls = ARRAY_SIZE(tm2_controls),
487 .dapm_widgets = tm2_dapm_widgets,
488 .num_dapm_widgets = ARRAY_SIZE(tm2_dapm_widgets),
489 .aux_dev = &tm2_speaker_amp_dev,
490 .num_aux_devs = 1,
491
492 .late_probe = tm2_late_probe,
493 .set_bias_level = tm2_set_bias_level,
494 };
495
496 static int tm2_probe(struct platform_device *pdev)
497 {
498 struct device_node *cpu_dai_node[2] = {};
499 struct device_node *codec_dai_node[2] = {};
500 const char *cells_name = NULL;
501 struct device *dev = &pdev->dev;
502 struct snd_soc_card *card = &tm2_card;
503 struct tm2_machine_priv *priv;
504 struct snd_soc_dai_link *dai_link;
505 int num_codecs, ret, i;
506
507 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
508 if (!priv)
509 return -ENOMEM;
510
511 snd_soc_card_set_drvdata(card, priv);
512 card->dev = dev;
513
514 priv->gpio_mic_bias = devm_gpiod_get(dev, "mic-bias", GPIOD_OUT_HIGH);
515 if (IS_ERR(priv->gpio_mic_bias)) {
516 dev_err(dev, "Failed to get mic bias gpio\n");
517 return PTR_ERR(priv->gpio_mic_bias);
518 }
519
520 ret = snd_soc_of_parse_card_name(card, "model");
521 if (ret < 0) {
522 dev_err(dev, "Card name is not specified\n");
523 return ret;
524 }
525
526 ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
527 if (ret < 0) {
528 /* Backwards compatible way */
529 ret = snd_soc_of_parse_audio_routing(card, "samsung,audio-routing");
530 if (ret < 0) {
531 dev_err(dev, "Audio routing is not specified or invalid\n");
532 return ret;
533 }
534 }
535
536 card->aux_dev[0].dlc.of_node = of_parse_phandle(dev->of_node,
537 "audio-amplifier", 0);
538 if (!card->aux_dev[0].dlc.of_node) {
539 dev_err(dev, "audio-amplifier property invalid or missing\n");
540 return -EINVAL;
541 }
542
543 num_codecs = of_count_phandle_with_args(dev->of_node, "audio-codec",
544 NULL);
545
546 /* Skip the HDMI link if not specified in DT */
547 if (num_codecs > 1) {
548 card->num_links = ARRAY_SIZE(tm2_dai_links);
549 cells_name = "#sound-dai-cells";
550 } else {
551 card->num_links = ARRAY_SIZE(tm2_dai_links) - 1;
552 }
553
554 for (i = 0; i < num_codecs; i++) {
555 struct of_phandle_args args;
556
557 ret = of_parse_phandle_with_args(dev->of_node, "i2s-controller",
558 cells_name, i, &args);
559 if (ret) {
560 dev_err(dev, "i2s-controller property parse error: %d\n", i);
561 ret = -EINVAL;
562 goto dai_node_put;
563 }
564 cpu_dai_node[i] = args.np;
565
566 codec_dai_node[i] = of_parse_phandle(dev->of_node,
567 "audio-codec", i);
568 if (!codec_dai_node[i]) {
569 dev_err(dev, "audio-codec property parse error\n");
570 ret = -EINVAL;
571 goto dai_node_put;
572 }
573 }
574
575 /* Initialize WM5110 - I2S and HDMI - I2S1 DAI links */
576 for_each_card_prelinks(card, i, dai_link) {
577 unsigned int dai_index = 0; /* WM5110 */
578
579 dai_link->cpus->name = NULL;
580 dai_link->platforms->name = NULL;
581
582 if (num_codecs > 1 && i == card->num_links - 1)
583 dai_index = 1; /* HDMI */
584
585 dai_link->codecs->of_node = codec_dai_node[dai_index];
586 dai_link->cpus->of_node = cpu_dai_node[dai_index];
587 dai_link->platforms->of_node = cpu_dai_node[dai_index];
588 }
589
590 if (num_codecs > 1) {
591 struct of_phandle_args args;
592
593 /* HDMI DAI link (I2S1) */
594 i = card->num_links - 1;
595
596 ret = of_parse_phandle_with_fixed_args(dev->of_node,
597 "audio-codec", 0, 1, &args);
598 if (ret) {
599 dev_err(dev, "audio-codec property parse error\n");
600 goto dai_node_put;
601 }
602
603 ret = snd_soc_get_dai_name(&args, &card->dai_link[i].codecs->dai_name);
604 if (ret) {
605 dev_err(dev, "Unable to get codec_dai_name\n");
606 goto dai_node_put;
607 }
608 }
609
610 ret = devm_snd_soc_register_component(dev, &tm2_component,
611 tm2_ext_dai, ARRAY_SIZE(tm2_ext_dai));
612 if (ret < 0) {
613 dev_err(dev, "Failed to register component: %d\n", ret);
614 goto dai_node_put;
615 }
616
617 ret = devm_snd_soc_register_card(dev, card);
618 if (ret < 0) {
619 dev_err_probe(dev, ret, "Failed to register card\n");
620 goto dai_node_put;
621 }
622
623 dai_node_put:
624 for (i = 0; i < num_codecs; i++) {
625 of_node_put(codec_dai_node[i]);
626 of_node_put(cpu_dai_node[i]);
627 }
628
629 of_node_put(card->aux_dev[0].dlc.of_node);
630
631 return ret;
632 }
633
634 static int tm2_pm_prepare(struct device *dev)
635 {
636 struct snd_soc_card *card = dev_get_drvdata(dev);
637
638 return tm2_stop_sysclk(card);
639 }
640
641 static void tm2_pm_complete(struct device *dev)
642 {
643 struct snd_soc_card *card = dev_get_drvdata(dev);
644
645 tm2_start_sysclk(card);
646 }
647
648 static const struct dev_pm_ops tm2_pm_ops = {
649 .prepare = tm2_pm_prepare,
650 .suspend = snd_soc_suspend,
651 .resume = snd_soc_resume,
652 .complete = tm2_pm_complete,
653 .freeze = snd_soc_suspend,
654 .thaw = snd_soc_resume,
655 .poweroff = snd_soc_poweroff,
656 .restore = snd_soc_resume,
657 };
658
659 static const struct of_device_id tm2_of_match[] = {
660 { .compatible = "samsung,tm2-audio" },
661 { },
662 };
663 MODULE_DEVICE_TABLE(of, tm2_of_match);
664
665 static struct platform_driver tm2_driver = {
666 .driver = {
667 .name = "tm2-audio",
668 .pm = &tm2_pm_ops,
669 .of_match_table = tm2_of_match,
670 },
671 .probe = tm2_probe,
672 };
673 module_platform_driver(tm2_driver);
674
675 MODULE_AUTHOR("Inha Song <ideal.song@samsung.com>");
676 MODULE_DESCRIPTION("ALSA SoC Exynos TM2 Audio Support");
677 MODULE_LICENSE("GPL v2");
678
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.