1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * MediaTek ALSA SoC AFE platform driver for MT7986
4 *
5 * Copyright (c) 2023 MediaTek Inc.
6 * Authors: Vic Wu <vic.wu@mediatek.com>
7 * Maso Huang <maso.huang@mediatek.com>
8 */
9
10 #include <linux/clk.h>
11 #include <linux/delay.h>
12 #include <linux/module.h>
13 #include <linux/of.h>
14 #include <linux/of_address.h>
15 #include <linux/pm_runtime.h>
16
17 #include "mt7986-afe-common.h"
18 #include "mt7986-reg.h"
19 #include "../common/mtk-afe-platform-driver.h"
20 #include "../common/mtk-afe-fe-dai.h"
21
22 enum {
23 MTK_AFE_RATE_8K = 0,
24 MTK_AFE_RATE_11K = 1,
25 MTK_AFE_RATE_12K = 2,
26 MTK_AFE_RATE_16K = 4,
27 MTK_AFE_RATE_22K = 5,
28 MTK_AFE_RATE_24K = 6,
29 MTK_AFE_RATE_32K = 8,
30 MTK_AFE_RATE_44K = 9,
31 MTK_AFE_RATE_48K = 10,
32 MTK_AFE_RATE_88K = 13,
33 MTK_AFE_RATE_96K = 14,
34 MTK_AFE_RATE_176K = 17,
35 MTK_AFE_RATE_192K = 18,
36 };
37
38 enum {
39 CLK_INFRA_AUD_BUS_CK = 0,
40 CLK_INFRA_AUD_26M_CK,
41 CLK_INFRA_AUD_L_CK,
42 CLK_INFRA_AUD_AUD_CK,
43 CLK_INFRA_AUD_EG2_CK,
44 CLK_NUM
45 };
46
47 static const char *aud_clks[CLK_NUM] = {
48 [CLK_INFRA_AUD_BUS_CK] = "aud_bus_ck",
49 [CLK_INFRA_AUD_26M_CK] = "aud_26m_ck",
50 [CLK_INFRA_AUD_L_CK] = "aud_l_ck",
51 [CLK_INFRA_AUD_AUD_CK] = "aud_aud_ck",
52 [CLK_INFRA_AUD_EG2_CK] = "aud_eg2_ck",
53 };
54
55 unsigned int mt7986_afe_rate_transform(struct device *dev, unsigned int rate)
56 {
57 switch (rate) {
58 case 8000:
59 return MTK_AFE_RATE_8K;
60 case 11025:
61 return MTK_AFE_RATE_11K;
62 case 12000:
63 return MTK_AFE_RATE_12K;
64 case 16000:
65 return MTK_AFE_RATE_16K;
66 case 22050:
67 return MTK_AFE_RATE_22K;
68 case 24000:
69 return MTK_AFE_RATE_24K;
70 case 32000:
71 return MTK_AFE_RATE_32K;
72 case 44100:
73 return MTK_AFE_RATE_44K;
74 case 48000:
75 return MTK_AFE_RATE_48K;
76 case 88200:
77 return MTK_AFE_RATE_88K;
78 case 96000:
79 return MTK_AFE_RATE_96K;
80 case 176400:
81 return MTK_AFE_RATE_176K;
82 case 192000:
83 return MTK_AFE_RATE_192K;
84 default:
85 dev_warn(dev, "%s(), rate %u invalid, using %d!!!\n",
86 __func__, rate, MTK_AFE_RATE_48K);
87 return MTK_AFE_RATE_48K;
88 }
89 }
90
91 static const struct snd_pcm_hardware mt7986_afe_hardware = {
92 .info = SNDRV_PCM_INFO_MMAP |
93 SNDRV_PCM_INFO_INTERLEAVED |
94 SNDRV_PCM_INFO_MMAP_VALID,
95 .formats = SNDRV_PCM_FMTBIT_S16_LE |
96 SNDRV_PCM_FMTBIT_S24_LE |
97 SNDRV_PCM_FMTBIT_S32_LE,
98 .period_bytes_min = 256,
99 .period_bytes_max = 4 * 48 * 1024,
100 .periods_min = 2,
101 .periods_max = 256,
102 .buffer_bytes_max = 8 * 48 * 1024,
103 .fifo_size = 0,
104 };
105
106 static int mt7986_memif_fs(struct snd_pcm_substream *substream,
107 unsigned int rate)
108 {
109 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
110 struct snd_soc_component *component = snd_soc_rtdcom_lookup(rtd, AFE_PCM_NAME);
111 struct mtk_base_afe *afe = snd_soc_component_get_drvdata(component);
112
113 return mt7986_afe_rate_transform(afe->dev, rate);
114 }
115
116 static int mt7986_irq_fs(struct snd_pcm_substream *substream,
117 unsigned int rate)
118 {
119 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
120 struct snd_soc_component *component = snd_soc_rtdcom_lookup(rtd, AFE_PCM_NAME);
121 struct mtk_base_afe *afe = snd_soc_component_get_drvdata(component);
122
123 return mt7986_afe_rate_transform(afe->dev, rate);
124 }
125
126 #define MTK_PCM_RATES (SNDRV_PCM_RATE_8000_48000 |\
127 SNDRV_PCM_RATE_88200 |\
128 SNDRV_PCM_RATE_96000 |\
129 SNDRV_PCM_RATE_176400 |\
130 SNDRV_PCM_RATE_192000)
131
132 #define MTK_PCM_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
133 SNDRV_PCM_FMTBIT_S24_LE |\
134 SNDRV_PCM_FMTBIT_S32_LE)
135
136 static struct snd_soc_dai_driver mt7986_memif_dai_driver[] = {
137 /* FE DAIs: memory intefaces to CPU */
138 {
139 .name = "DL1",
140 .id = MT7986_MEMIF_DL1,
141 .playback = {
142 .stream_name = "DL1",
143 .channels_min = 1,
144 .channels_max = 2,
145 .rates = MTK_PCM_RATES,
146 .formats = MTK_PCM_FORMATS,
147 },
148 .ops = &mtk_afe_fe_ops,
149 },
150 {
151 .name = "UL1",
152 .id = MT7986_MEMIF_VUL12,
153 .capture = {
154 .stream_name = "UL1",
155 .channels_min = 1,
156 .channels_max = 2,
157 .rates = MTK_PCM_RATES,
158 .formats = MTK_PCM_FORMATS,
159 },
160 .ops = &mtk_afe_fe_ops,
161 },
162 };
163
164 static const struct snd_kcontrol_new o018_mix[] = {
165 SOC_DAPM_SINGLE_AUTODISABLE("I150_Switch", AFE_CONN018_4, 22, 1, 0),
166 };
167
168 static const struct snd_kcontrol_new o019_mix[] = {
169 SOC_DAPM_SINGLE_AUTODISABLE("I151_Switch", AFE_CONN019_4, 23, 1, 0),
170 };
171
172 static const struct snd_soc_dapm_widget mt7986_memif_widgets[] = {
173 /* DL */
174 SND_SOC_DAPM_MIXER("I032", SND_SOC_NOPM, 0, 0, NULL, 0),
175 SND_SOC_DAPM_MIXER("I033", SND_SOC_NOPM, 0, 0, NULL, 0),
176
177 /* UL */
178 SND_SOC_DAPM_MIXER("O018", SND_SOC_NOPM, 0, 0,
179 o018_mix, ARRAY_SIZE(o018_mix)),
180 SND_SOC_DAPM_MIXER("O019", SND_SOC_NOPM, 0, 0,
181 o019_mix, ARRAY_SIZE(o019_mix)),
182 };
183
184 static const struct snd_soc_dapm_route mt7986_memif_routes[] = {
185 {"I032", NULL, "DL1"},
186 {"I033", NULL, "DL1"},
187 {"UL1", NULL, "O018"},
188 {"UL1", NULL, "O019"},
189 {"O018", "I150_Switch", "I150"},
190 {"O019", "I151_Switch", "I151"},
191 };
192
193 static const struct snd_soc_component_driver mt7986_afe_pcm_dai_component = {
194 .name = "mt7986-afe-pcm-dai",
195 };
196
197 static const struct mtk_base_memif_data memif_data[MT7986_MEMIF_NUM] = {
198 [MT7986_MEMIF_DL1] = {
199 .name = "DL1",
200 .id = MT7986_MEMIF_DL1,
201 .reg_ofs_base = AFE_DL0_BASE,
202 .reg_ofs_cur = AFE_DL0_CUR,
203 .reg_ofs_end = AFE_DL0_END,
204 .reg_ofs_base_msb = AFE_DL0_BASE_MSB,
205 .reg_ofs_cur_msb = AFE_DL0_CUR_MSB,
206 .reg_ofs_end_msb = AFE_DL0_END_MSB,
207 .fs_reg = AFE_DL0_CON0,
208 .fs_shift = DL0_MODE_SFT,
209 .fs_maskbit = DL0_MODE_MASK,
210 .mono_reg = AFE_DL0_CON0,
211 .mono_shift = DL0_MONO_SFT,
212 .enable_reg = AFE_DL0_CON0,
213 .enable_shift = DL0_ON_SFT,
214 .hd_reg = AFE_DL0_CON0,
215 .hd_shift = DL0_HD_MODE_SFT,
216 .hd_align_reg = AFE_DL0_CON0,
217 .hd_align_mshift = DL0_HALIGN_SFT,
218 .pbuf_reg = AFE_DL0_CON0,
219 .pbuf_shift = DL0_PBUF_SIZE_SFT,
220 .minlen_reg = AFE_DL0_CON0,
221 .minlen_shift = DL0_MINLEN_SFT,
222 },
223 [MT7986_MEMIF_VUL12] = {
224 .name = "VUL12",
225 .id = MT7986_MEMIF_VUL12,
226 .reg_ofs_base = AFE_VUL0_BASE,
227 .reg_ofs_cur = AFE_VUL0_CUR,
228 .reg_ofs_end = AFE_VUL0_END,
229 .reg_ofs_base_msb = AFE_VUL0_BASE_MSB,
230 .reg_ofs_cur_msb = AFE_VUL0_CUR_MSB,
231 .reg_ofs_end_msb = AFE_VUL0_END_MSB,
232 .fs_reg = AFE_VUL0_CON0,
233 .fs_shift = VUL0_MODE_SFT,
234 .fs_maskbit = VUL0_MODE_MASK,
235 .mono_reg = AFE_VUL0_CON0,
236 .mono_shift = VUL0_MONO_SFT,
237 .enable_reg = AFE_VUL0_CON0,
238 .enable_shift = VUL0_ON_SFT,
239 .hd_reg = AFE_VUL0_CON0,
240 .hd_shift = VUL0_HD_MODE_SFT,
241 .hd_align_reg = AFE_VUL0_CON0,
242 .hd_align_mshift = VUL0_HALIGN_SFT,
243 },
244 };
245
246 static const struct mtk_base_irq_data irq_data[MT7986_IRQ_NUM] = {
247 [MT7986_IRQ_0] = {
248 .id = MT7986_IRQ_0,
249 .irq_cnt_reg = AFE_IRQ0_MCU_CFG1,
250 .irq_cnt_shift = AFE_IRQ_CNT_SHIFT,
251 .irq_cnt_maskbit = AFE_IRQ_CNT_MASK,
252 .irq_fs_reg = AFE_IRQ0_MCU_CFG0,
253 .irq_fs_shift = IRQ_MCU_MODE_SFT,
254 .irq_fs_maskbit = IRQ_MCU_MODE_MASK,
255 .irq_en_reg = AFE_IRQ0_MCU_CFG0,
256 .irq_en_shift = IRQ_MCU_ON_SFT,
257 .irq_clr_reg = AFE_IRQ_MCU_CLR,
258 .irq_clr_shift = IRQ0_MCU_CLR_SFT,
259 },
260 [MT7986_IRQ_1] = {
261 .id = MT7986_IRQ_1,
262 .irq_cnt_reg = AFE_IRQ1_MCU_CFG1,
263 .irq_cnt_shift = AFE_IRQ_CNT_SHIFT,
264 .irq_cnt_maskbit = AFE_IRQ_CNT_MASK,
265 .irq_fs_reg = AFE_IRQ1_MCU_CFG0,
266 .irq_fs_shift = IRQ_MCU_MODE_SFT,
267 .irq_fs_maskbit = IRQ_MCU_MODE_MASK,
268 .irq_en_reg = AFE_IRQ1_MCU_CFG0,
269 .irq_en_shift = IRQ_MCU_ON_SFT,
270 .irq_clr_reg = AFE_IRQ_MCU_CLR,
271 .irq_clr_shift = IRQ1_MCU_CLR_SFT,
272 },
273 [MT7986_IRQ_2] = {
274 .id = MT7986_IRQ_2,
275 .irq_cnt_reg = AFE_IRQ2_MCU_CFG1,
276 .irq_cnt_shift = AFE_IRQ_CNT_SHIFT,
277 .irq_cnt_maskbit = AFE_IRQ_CNT_MASK,
278 .irq_fs_reg = AFE_IRQ2_MCU_CFG0,
279 .irq_fs_shift = IRQ_MCU_MODE_SFT,
280 .irq_fs_maskbit = IRQ_MCU_MODE_MASK,
281 .irq_en_reg = AFE_IRQ2_MCU_CFG0,
282 .irq_en_shift = IRQ_MCU_ON_SFT,
283 .irq_clr_reg = AFE_IRQ_MCU_CLR,
284 .irq_clr_shift = IRQ2_MCU_CLR_SFT,
285 },
286 };
287
288 static bool mt7986_is_volatile_reg(struct device *dev, unsigned int reg)
289 {
290 /*
291 * Those auto-gen regs are read-only, so put it as volatile because
292 * volatile registers cannot be cached, which means that they cannot
293 * be set when power is off
294 */
295
296 switch (reg) {
297 case AFE_DL0_CUR_MSB:
298 case AFE_DL0_CUR:
299 case AFE_DL0_RCH_MON:
300 case AFE_DL0_LCH_MON:
301 case AFE_VUL0_CUR_MSB:
302 case AFE_VUL0_CUR:
303 case AFE_IRQ_MCU_STATUS:
304 case AFE_MEMIF_RD_MON:
305 case AFE_MEMIF_WR_MON:
306 return true;
307 default:
308 return false;
309 };
310 }
311
312 static const struct regmap_config mt7986_afe_regmap_config = {
313 .reg_bits = 32,
314 .reg_stride = 4,
315 .val_bits = 32,
316 .volatile_reg = mt7986_is_volatile_reg,
317 .max_register = AFE_MAX_REGISTER,
318 .num_reg_defaults_raw = ((AFE_MAX_REGISTER / 4) + 1),
319 };
320
321 static int mt7986_init_clock(struct mtk_base_afe *afe)
322 {
323 struct mt7986_afe_private *afe_priv = afe->platform_priv;
324 int ret, i;
325
326 afe_priv->clks = devm_kcalloc(afe->dev, CLK_NUM,
327 sizeof(*afe_priv->clks), GFP_KERNEL);
328 if (!afe_priv->clks)
329 return -ENOMEM;
330 afe_priv->num_clks = CLK_NUM;
331
332 for (i = 0; i < afe_priv->num_clks; i++)
333 afe_priv->clks[i].id = aud_clks[i];
334
335 ret = devm_clk_bulk_get(afe->dev, afe_priv->num_clks, afe_priv->clks);
336 if (ret)
337 return dev_err_probe(afe->dev, ret, "Failed to get clocks\n");
338
339 return 0;
340 }
341
342 static irqreturn_t mt7986_afe_irq_handler(int irq_id, void *dev)
343 {
344 struct mtk_base_afe *afe = dev;
345 struct mtk_base_afe_irq *irq;
346 u32 mcu_en, status, status_mcu;
347 int i, ret;
348 irqreturn_t irq_ret = IRQ_HANDLED;
349
350 /* get irq that is sent to MCU */
351 regmap_read(afe->regmap, AFE_IRQ_MCU_EN, &mcu_en);
352
353 ret = regmap_read(afe->regmap, AFE_IRQ_MCU_STATUS, &status);
354 /* only care IRQ which is sent to MCU */
355 status_mcu = status & mcu_en & AFE_IRQ_STATUS_BITS;
356
357 if (ret || status_mcu == 0) {
358 dev_err(afe->dev, "%s(), irq status err, ret %d, status 0x%x, mcu_en 0x%x\n",
359 __func__, ret, status, mcu_en);
360
361 irq_ret = IRQ_NONE;
362 goto err_irq;
363 }
364
365 for (i = 0; i < MT7986_MEMIF_NUM; i++) {
366 struct mtk_base_afe_memif *memif = &afe->memif[i];
367
368 if (!memif->substream)
369 continue;
370
371 if (memif->irq_usage < 0)
372 continue;
373
374 irq = &afe->irqs[memif->irq_usage];
375
376 if (status_mcu & (1 << irq->irq_data->irq_en_shift))
377 snd_pcm_period_elapsed(memif->substream);
378 }
379
380 err_irq:
381 /* clear irq */
382 regmap_write(afe->regmap, AFE_IRQ_MCU_CLR, status_mcu);
383
384 return irq_ret;
385 }
386
387 static int mt7986_afe_runtime_suspend(struct device *dev)
388 {
389 struct mtk_base_afe *afe = dev_get_drvdata(dev);
390 struct mt7986_afe_private *afe_priv = afe->platform_priv;
391
392 if (!afe->regmap || afe_priv->pm_runtime_bypass_reg_ctl)
393 goto skip_regmap;
394
395 /* disable clk*/
396 regmap_update_bits(afe->regmap, AUDIO_TOP_CON4, 0x3fff, 0x3fff);
397 regmap_update_bits(afe->regmap, AUDIO_ENGEN_CON0, AUD_APLL2_EN_MASK, 0);
398 regmap_update_bits(afe->regmap, AUDIO_ENGEN_CON0, AUD_26M_EN_MASK, 0);
399
400 /* make sure all irq status are cleared, twice intended */
401 regmap_update_bits(afe->regmap, AFE_IRQ_MCU_CLR, 0xffff, 0xffff);
402
403 skip_regmap:
404 clk_bulk_disable_unprepare(afe_priv->num_clks, afe_priv->clks);
405
406 return 0;
407 }
408
409 static int mt7986_afe_runtime_resume(struct device *dev)
410 {
411 struct mtk_base_afe *afe = dev_get_drvdata(dev);
412 struct mt7986_afe_private *afe_priv = afe->platform_priv;
413 int ret;
414
415 ret = clk_bulk_prepare_enable(afe_priv->num_clks, afe_priv->clks);
416 if (ret)
417 return dev_err_probe(afe->dev, ret, "Failed to enable clocks\n");
418
419 if (!afe->regmap || afe_priv->pm_runtime_bypass_reg_ctl)
420 return 0;
421
422 /* enable clk*/
423 regmap_update_bits(afe->regmap, AUDIO_TOP_CON4, 0x3fff, 0);
424 regmap_update_bits(afe->regmap, AUDIO_ENGEN_CON0, AUD_APLL2_EN_MASK,
425 AUD_APLL2_EN);
426 regmap_update_bits(afe->regmap, AUDIO_ENGEN_CON0, AUD_26M_EN_MASK,
427 AUD_26M_EN);
428
429 return 0;
430 }
431
432 static int mt7986_dai_memif_register(struct mtk_base_afe *afe)
433 {
434 struct mtk_base_afe_dai *dai;
435
436 dai = devm_kzalloc(afe->dev, sizeof(*dai), GFP_KERNEL);
437 if (!dai)
438 return -ENOMEM;
439
440 list_add(&dai->list, &afe->sub_dais);
441
442 dai->dai_drivers = mt7986_memif_dai_driver;
443 dai->num_dai_drivers = ARRAY_SIZE(mt7986_memif_dai_driver);
444
445 dai->dapm_widgets = mt7986_memif_widgets;
446 dai->num_dapm_widgets = ARRAY_SIZE(mt7986_memif_widgets);
447 dai->dapm_routes = mt7986_memif_routes;
448 dai->num_dapm_routes = ARRAY_SIZE(mt7986_memif_routes);
449
450 return 0;
451 }
452
453 typedef int (*dai_register_cb)(struct mtk_base_afe *);
454 static const dai_register_cb dai_register_cbs[] = {
455 mt7986_dai_etdm_register,
456 mt7986_dai_memif_register,
457 };
458
459 static int mt7986_afe_pcm_dev_probe(struct platform_device *pdev)
460 {
461 struct mtk_base_afe *afe;
462 struct mt7986_afe_private *afe_priv;
463 struct device *dev;
464 int i, irq_id, ret;
465
466 afe = devm_kzalloc(&pdev->dev, sizeof(*afe), GFP_KERNEL);
467 if (!afe)
468 return -ENOMEM;
469 platform_set_drvdata(pdev, afe);
470
471 afe->platform_priv = devm_kzalloc(&pdev->dev, sizeof(*afe_priv),
472 GFP_KERNEL);
473 if (!afe->platform_priv)
474 return -ENOMEM;
475
476 afe_priv = afe->platform_priv;
477 afe->dev = &pdev->dev;
478 dev = afe->dev;
479
480 afe->base_addr = devm_platform_ioremap_resource(pdev, 0);
481 if (IS_ERR(afe->base_addr))
482 return PTR_ERR(afe->base_addr);
483
484 /* initial audio related clock */
485 ret = mt7986_init_clock(afe);
486 if (ret)
487 return dev_err_probe(dev, ret, "Cannot initialize clocks\n");
488
489 ret = devm_pm_runtime_enable(dev);
490 if (ret)
491 return ret;
492
493 /* enable clock for regcache get default value from hw */
494 afe_priv->pm_runtime_bypass_reg_ctl = true;
495 pm_runtime_get_sync(&pdev->dev);
496
497 afe->regmap = devm_regmap_init_mmio(&pdev->dev, afe->base_addr,
498 &mt7986_afe_regmap_config);
499
500 pm_runtime_put_sync(&pdev->dev);
501 if (IS_ERR(afe->regmap))
502 return PTR_ERR(afe->regmap);
503
504 afe_priv->pm_runtime_bypass_reg_ctl = false;
505
506 /* init memif */
507 afe->memif_size = MT7986_MEMIF_NUM;
508 afe->memif = devm_kcalloc(dev, afe->memif_size, sizeof(*afe->memif),
509 GFP_KERNEL);
510 if (!afe->memif)
511 return -ENOMEM;
512
513 for (i = 0; i < afe->memif_size; i++) {
514 afe->memif[i].data = &memif_data[i];
515 afe->memif[i].irq_usage = -1;
516 }
517
518 mutex_init(&afe->irq_alloc_lock);
519
520 /* irq initialize */
521 afe->irqs_size = MT7986_IRQ_NUM;
522 afe->irqs = devm_kcalloc(dev, afe->irqs_size, sizeof(*afe->irqs),
523 GFP_KERNEL);
524 if (!afe->irqs)
525 return -ENOMEM;
526
527 for (i = 0; i < afe->irqs_size; i++)
528 afe->irqs[i].irq_data = &irq_data[i];
529
530 /* request irq */
531 irq_id = platform_get_irq(pdev, 0);
532 if (irq_id < 0) {
533 ret = irq_id;
534 return dev_err_probe(dev, ret, "No irq found\n");
535 }
536 ret = devm_request_irq(dev, irq_id, mt7986_afe_irq_handler,
537 IRQF_TRIGGER_NONE, "asys-isr", (void *)afe);
538 if (ret)
539 return dev_err_probe(dev, ret, "Failed to request irq for asys-isr\n");
540
541 /* init sub_dais */
542 INIT_LIST_HEAD(&afe->sub_dais);
543
544 for (i = 0; i < ARRAY_SIZE(dai_register_cbs); i++) {
545 ret = dai_register_cbs[i](afe);
546 if (ret)
547 return dev_err_probe(dev, ret, "DAI register failed, i: %d\n", i);
548 }
549
550 /* init dai_driver and component_driver */
551 ret = mtk_afe_combine_sub_dai(afe);
552 if (ret)
553 return dev_err_probe(dev, ret, "mtk_afe_combine_sub_dai fail\n");
554
555 afe->mtk_afe_hardware = &mt7986_afe_hardware;
556 afe->memif_fs = mt7986_memif_fs;
557 afe->irq_fs = mt7986_irq_fs;
558
559 afe->runtime_resume = mt7986_afe_runtime_resume;
560 afe->runtime_suspend = mt7986_afe_runtime_suspend;
561
562 /* register component */
563 ret = devm_snd_soc_register_component(&pdev->dev,
564 &mtk_afe_pcm_platform,
565 NULL, 0);
566 if (ret)
567 return dev_err_probe(dev, ret, "Cannot register AFE component\n");
568
569 ret = devm_snd_soc_register_component(afe->dev,
570 &mt7986_afe_pcm_dai_component,
571 afe->dai_drivers,
572 afe->num_dai_drivers);
573 if (ret)
574 return dev_err_probe(dev, ret, "Cannot register PCM DAI component\n");
575
576 return 0;
577 }
578
579 static void mt7986_afe_pcm_dev_remove(struct platform_device *pdev)
580 {
581 pm_runtime_disable(&pdev->dev);
582 if (!pm_runtime_status_suspended(&pdev->dev))
583 mt7986_afe_runtime_suspend(&pdev->dev);
584 }
585
586 static const struct of_device_id mt7986_afe_pcm_dt_match[] = {
587 { .compatible = "mediatek,mt7986-afe" },
588 { /* sentinel */ }
589 };
590 MODULE_DEVICE_TABLE(of, mt7986_afe_pcm_dt_match);
591
592 static const struct dev_pm_ops mt7986_afe_pm_ops = {
593 SET_RUNTIME_PM_OPS(mt7986_afe_runtime_suspend,
594 mt7986_afe_runtime_resume, NULL)
595 };
596
597 static struct platform_driver mt7986_afe_pcm_driver = {
598 .driver = {
599 .name = "mt7986-audio",
600 .of_match_table = mt7986_afe_pcm_dt_match,
601 .pm = &mt7986_afe_pm_ops,
602 },
603 .probe = mt7986_afe_pcm_dev_probe,
604 .remove_new = mt7986_afe_pcm_dev_remove,
605 };
606 module_platform_driver(mt7986_afe_pcm_driver);
607
608 MODULE_DESCRIPTION("MediaTek SoC AFE platform driver for ALSA MT7986");
609 MODULE_AUTHOR("Vic Wu <vic.wu@mediatek.com>");
610 MODULE_LICENSE("GPL");
611
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