mt8189-dai-pcm.c

  1// SPDX-License-Identifier: GPL-2.0
  2/*
  3 *  MediaTek ALSA SoC Audio DAI I2S Control
  4 *
  5 *  Copyright (c) 2025 MediaTek Inc.
  6 *  Author: Darren Ye <darren.ye@mediatek.com>
  7 */
  8
  9#include <linux/regmap.h>
 10
 11#include <sound/pcm_params.h>
 12
 13#include "mt8189-afe-common.h"
 14#include "mt8189-interconnection.h"
 15#include "mt8189-afe-clk.h"
 16
 17enum AUD_TX_LCH_RPT {
 18	AUD_TX_LCH_RPT_NO_REPEAT,
 19	AUD_TX_LCH_RPT_REPEAT
 20};
 21
 22enum AUD_VBT_16K_MODE {
 23	AUD_VBT_16K_MODE_DISABLE,
 24	AUD_VBT_16K_MODE_ENABLE
 25};
 26
 27enum AUD_EXT_MODEM {
 28	AUD_EXT_MODEM_SELECT_INTERNAL,
 29	AUD_EXT_MODEM_SELECT_EXTERNAL
 30};
 31
 32enum AUD_PCM_SYNC_TYPE {
 33	/* bck sync length = 1 */
 34	AUD_PCM_ONE_BCK_CYCLE_SYNC,
 35	/* bck sync length = PCM_INTF_CON1[9:13] */
 36	AUD_PCM_EXTENDED_BCK_CYCLE_SYNC
 37};
 38
 39enum AUD_BT_MODE {
 40	AUD_BT_MODE_DUAL_MIC_ON_TX,
 41	AUD_BT_MODE_SINGLE_MIC_ON_TX
 42};
 43
 44enum AUD_PCM_AFIFO_SRC {
 45	/* slave mode & external modem uses different crystal */
 46	AUD_PCM_AFIFO_ASRC,
 47	/* slave mode & external modem uses the same crystal */
 48	AUD_PCM_AFIFO_AFIFO
 49};
 50
 51enum AUD_PCM_CLOCK_SOURCE {
 52	AUD_PCM_CLOCK_MASTER_MODE,
 53	AUD_PCM_CLOCK_SLAVE_MODE
 54};
 55
 56enum AUD_PCM_WLEN {
 57	AUD_PCM_WLEN_PCM_32_BCK_CYCLES,
 58	AUD_PCM_WLEN_PCM_64_BCK_CYCLES
 59};
 60
 61enum AUD_PCM_MODE {
 62	AUD_PCM_MODE_PCM_MODE_8K,
 63	AUD_PCM_MODE_PCM_MODE_16K,
 64	AUD_PCM_MODE_PCM_MODE_32K,
 65	AUD_PCM_MODE_PCM_MODE_48K
 66};
 67
 68enum AUD_PCM_FMT {
 69	AUD_PCM_FMT_I2S,
 70	AUD_PCM_FMT_EIAJ,
 71	AUD_PCM_FMT_PCM_MODE_A,
 72	AUD_PCM_FMT_PCM_MODE_B
 73};
 74
 75enum AUD_BCLK_OUT_INV {
 76	AUD_BCLK_OUT_INV_NO_INVERSE,
 77	AUD_BCLK_OUT_INV_INVERSE
 78};
 79
 80enum AUD_PCM_EN {
 81	AUD_PCM_EN_DISABLE,
 82	AUD_PCM_EN_ENABLE
 83};
 84
 85enum AUD_PCM1_1X_EN_DOMAIN {
 86	HOPPING_26M,
 87	APLL,
 88	SLAVE = 6
 89};
 90
 91enum AUD_PCM1_1X_EN_SLAVE_MODE {
 92	PCM0_SLAVE_1X_EN,
 93	PCM1_SLAVE_1X_EN
 94};
 95
 96enum {
 97	PCM_8K,
 98	PCM_16K = 4,
 99	PCM_32K = 8,
100	PCM_48K = 10
101};
102
103static unsigned int pcm_1x_rate_transform(struct device *dev,
104					  unsigned int rate)
105{
106	switch (rate) {
107	case 8000:
108		return PCM_8K;
109	case 16000:
110		return PCM_16K;
111	case 32000:
112		return PCM_32K;
113	case 48000:
114		return PCM_48K;
115	default:
116		dev_warn(dev, "rate %u invalid, use %d!!!\n",
117			 rate, PCM_48K);
118		return PCM_48K;
119	}
120}
121
122static unsigned int pcm_rate_transform(struct device *dev,
123				       unsigned int rate)
124{
125	switch (rate) {
126	case 8000:
127		return MTK_AFE_PCM_RATE_8K;
128	case 16000:
129		return MTK_AFE_PCM_RATE_16K;
130	case 32000:
131		return MTK_AFE_PCM_RATE_32K;
132	case 48000:
133		return MTK_AFE_PCM_RATE_48K;
134	default:
135		dev_warn(dev, "rate %u invalid, use %d\n",
136			 rate, MTK_AFE_PCM_RATE_48K);
137		return MTK_AFE_PCM_RATE_48K;
138	}
139}
140
141/* dai component */
142static const struct snd_kcontrol_new mtk_pcm_0_playback_ch1_mix[] = {
143	SOC_DAPM_SINGLE_AUTODISABLE("ADDA_UL_CH1", AFE_CONN096_0,
144				    I_ADDA_UL_CH1, 1, 0),
145	SOC_DAPM_SINGLE_AUTODISABLE("DL2_CH1", AFE_CONN096_1,
146				    I_DL2_CH1, 1, 0),
147	SOC_DAPM_SINGLE_AUTODISABLE("DL_24CH_CH1", AFE_CONN096_1,
148				    I_DL_24CH_CH1, 1, 0),
149};
150
151static const struct snd_kcontrol_new mtk_pcm_0_playback_ch2_mix[] = {
152	SOC_DAPM_SINGLE_AUTODISABLE("ADDA_UL_CH2", AFE_CONN097_0,
153				    I_ADDA_UL_CH2, 1, 0),
154	SOC_DAPM_SINGLE_AUTODISABLE("DL2_CH2", AFE_CONN097_1,
155				    I_DL2_CH2, 1, 0),
156	SOC_DAPM_SINGLE_AUTODISABLE("DL_24CH_CH2", AFE_CONN097_1,
157				    I_DL_24CH_CH2, 1, 0),
158};
159
160static const struct snd_kcontrol_new mtk_pcm_0_playback_ch4_mix[] = {
161	SOC_DAPM_SINGLE_AUTODISABLE("I2SIN1_CH1", AFE_CONN099_4,
162				    I_I2SIN1_CH1, 1, 0),
163	SOC_DAPM_SINGLE_AUTODISABLE("I2SIN1_CH2", AFE_CONN099_4,
164				    I_I2SIN1_CH2, 1, 0),
165	SOC_DAPM_SINGLE_AUTODISABLE("DL0_CH1", AFE_CONN099_1,
166				    I_DL0_CH1, 1, 0),
167	SOC_DAPM_SINGLE_AUTODISABLE("DL_24CH_CH1", AFE_CONN099_1,
168				    I_DL_24CH_CH1, 1, 0),
169};
170
171static const struct snd_soc_dapm_widget mtk_dai_pcm_widgets[] = {
172	/* inter-connections */
173	SND_SOC_DAPM_MIXER("PCM_0_PB_CH1", SND_SOC_NOPM, 0, 0,
174			   mtk_pcm_0_playback_ch1_mix,
175			   ARRAY_SIZE(mtk_pcm_0_playback_ch1_mix)),
176	SND_SOC_DAPM_MIXER("PCM_0_PB_CH2", SND_SOC_NOPM, 0, 0,
177			   mtk_pcm_0_playback_ch2_mix,
178			   ARRAY_SIZE(mtk_pcm_0_playback_ch2_mix)),
179	SND_SOC_DAPM_MIXER("PCM_0_PB_CH4", SND_SOC_NOPM, 0, 0,
180			   mtk_pcm_0_playback_ch4_mix,
181			   ARRAY_SIZE(mtk_pcm_0_playback_ch4_mix)),
182
183	SND_SOC_DAPM_SUPPLY("PCM_0_EN",
184			    AFE_PCM0_INTF_CON0, PCM0_EN_SFT, 0,
185			    NULL, 0),
186
187	SND_SOC_DAPM_SUPPLY("PCM0_CG", AUDIO_TOP_CON0, PDN_PCM0_SFT, 1,
188			    NULL, 0),
189
190	SND_SOC_DAPM_INPUT("AFE_PCM_INPUT"),
191	SND_SOC_DAPM_OUTPUT("AFE_PCM_OUTPUT"),
192};
193
194static const struct snd_soc_dapm_route mtk_dai_pcm_routes[] = {
195	{"PCM 0 Playback", NULL, "PCM_0_PB_CH1"},
196	{"PCM 0 Playback", NULL, "PCM_0_PB_CH2"},
197	{"PCM 0 Playback", NULL, "PCM_0_PB_CH4"},
198
199	{"PCM 0 Playback", NULL, "PCM_0_EN"},
200	{"PCM 0 Capture", NULL, "PCM_0_EN"},
201	{"PCM 0 Playback", NULL, "PCM0_CG"},
202	{"PCM 0 Capture", NULL, "PCM0_CG"},
203
204	{"AFE_PCM_OUTPUT", NULL, "PCM 0 Playback"},
205	{"PCM 0 Capture", NULL, "AFE_PCM_INPUT"},
206
207	{"PCM_0_PB_CH1", "DL2_CH1", "DL2"},
208	{"PCM_0_PB_CH2", "DL2_CH2", "DL2"},
209	{"PCM_0_PB_CH4", "DL0_CH1", "DL0"},
210
211	{"PCM_0_PB_CH1", "DL_24CH_CH1", "DL_24CH"},
212	{"PCM_0_PB_CH2", "DL_24CH_CH2", "DL_24CH"},
213	{"PCM_0_PB_CH4", "DL_24CH_CH1", "DL_24CH"},
214};
215
216/* dai ops */
217static int mtk_dai_pcm_hw_params(struct snd_pcm_substream *substream,
218				 struct snd_pcm_hw_params *params,
219				 struct snd_soc_dai *dai)
220{
221	struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
222	unsigned int rate = params_rate(params);
223	unsigned int rate_reg = pcm_rate_transform(afe->dev, rate);
224	unsigned int x_rate_reg = pcm_1x_rate_transform(afe->dev, rate);
225	unsigned int pcm_con0;
226	unsigned int pcm_con1;
227	unsigned int playback_active = 0;
228	unsigned int capture_active = 0;
229	struct snd_soc_dapm_widget *playback_widget =
230		snd_soc_dai_get_widget(dai, SNDRV_PCM_STREAM_PLAYBACK);
231	struct snd_soc_dapm_widget *capture_widget =
232		snd_soc_dai_get_widget(dai, SNDRV_PCM_STREAM_CAPTURE);
233
234	if (playback_widget)
235		playback_active = playback_widget->active;
236	if (capture_widget)
237		capture_active = capture_widget->active;
238	dev_dbg(afe->dev,
239		"id %d, stream %d, rate %d, rate_reg %d, active p %d, c %d\n",
240		dai->id, substream->stream, rate, rate_reg,
241		playback_active, capture_active);
242
243	if (playback_active || capture_active)
244		return 0;
245	switch (dai->id) {
246	case MT8189_DAI_PCM_0:
247		pcm_con0 = AUD_BCLK_OUT_INV_NO_INVERSE << PCM0_BCLK_OUT_INV_SFT;
248		pcm_con0 |= AUD_TX_LCH_RPT_NO_REPEAT << PCM0_TX_LCH_RPT_SFT;
249		pcm_con0 |= AUD_VBT_16K_MODE_DISABLE << PCM0_VBT_16K_MODE_SFT;
250		pcm_con0 |= 0 << PCM0_SYNC_LENGTH_SFT;
251		pcm_con0 |= AUD_PCM_ONE_BCK_CYCLE_SYNC << PCM0_SYNC_TYPE_SFT;
252		pcm_con0 |= AUD_PCM_AFIFO_AFIFO << PCM0_BYP_ASRC_SFT;
253		pcm_con0 |= AUD_PCM_CLOCK_MASTER_MODE << PCM0_SLAVE_SFT;
254		pcm_con0 |= rate_reg << PCM0_MODE_SFT;
255		pcm_con0 |= AUD_PCM_FMT_I2S << PCM0_FMT_SFT;
256
257		pcm_con1 = AUD_EXT_MODEM_SELECT_INTERNAL << PCM0_EXT_MODEM_SFT;
258		pcm_con1 |= AUD_BT_MODE_DUAL_MIC_ON_TX << PCM0_BT_MODE_SFT;
259		pcm_con1 |= HOPPING_26M << PCM0_1X_EN_DOMAIN_SFT;
260		pcm_con1 |= x_rate_reg << PCM0_1X_EN_MODE_SFT;
261
262		regmap_update_bits(afe->regmap, AFE_PCM0_INTF_CON0,
263				   ~(unsigned int)PCM0_EN_MASK_SFT, pcm_con0);
264		regmap_update_bits(afe->regmap, AFE_PCM0_INTF_CON1,
265				   AFE_PCM0_INTF_CON1_MASK_MON_MASK_SFT,
266				   pcm_con1);
267		break;
268	default:
269		dev_err(afe->dev, "%s(), id %d not support\n",
270			__func__, dai->id);
271		return -EINVAL;
272	}
273	return 0;
274}
275
276static const struct snd_soc_dai_ops mtk_dai_pcm_ops = {
277	.hw_params = mtk_dai_pcm_hw_params,
278};
279
280/* dai driver */
281#define MTK_PCM_RATES (SNDRV_PCM_RATE_8000 |\
282		       SNDRV_PCM_RATE_16000 |\
283		       SNDRV_PCM_RATE_32000 |\
284		       SNDRV_PCM_RATE_48000)
285
286#define MTK_PCM_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
287			 SNDRV_PCM_FMTBIT_S24_LE |\
288			 SNDRV_PCM_FMTBIT_S32_LE)
289
290static struct snd_soc_dai_driver mtk_dai_pcm_driver[] = {
291	{
292		.name = "PCM 0",
293		.id = MT8189_DAI_PCM_0,
294		.playback = {
295			.stream_name = "PCM 0 Playback",
296			.channels_min = 1,
297			.channels_max = 2,
298			.rates = MTK_PCM_RATES,
299			.formats = MTK_PCM_FORMATS,
300		},
301		.capture = {
302			.stream_name = "PCM 0 Capture",
303			.channels_min = 1,
304			.channels_max = 2,
305			.rates = MTK_PCM_RATES,
306			.formats = MTK_PCM_FORMATS,
307		},
308		.ops = &mtk_dai_pcm_ops,
309		.symmetric_rate = 1,
310		.symmetric_sample_bits = 1,
311	},
312};
313
314int mt8189_dai_pcm_register(struct mtk_base_afe *afe)
315{
316	struct mtk_base_afe_dai *dai;
317
318	dai = devm_kzalloc(afe->dev, sizeof(*dai), GFP_KERNEL);
319	if (!dai)
320		return -ENOMEM;
321
322	dai->dai_drivers = mtk_dai_pcm_driver;
323	dai->num_dai_drivers = ARRAY_SIZE(mtk_dai_pcm_driver);
324	dai->dapm_widgets = mtk_dai_pcm_widgets;
325	dai->num_dapm_widgets = ARRAY_SIZE(mtk_dai_pcm_widgets);
326	dai->dapm_routes = mtk_dai_pcm_routes;
327	dai->num_dapm_routes = ARRAY_SIZE(mtk_dai_pcm_routes);
328
329	list_add(&dai->list, &afe->sub_dais);
330
331	return 0;
332}