mt8365-mt6357.c

  1// SPDX-License-Identifier: GPL-2.0
  2/*
  3 * MediaTek MT8365 Sound Card driver
  4 *
  5 * Copyright (c) 2024 MediaTek Inc.
  6 * Authors: Nicolas Belin <nbelin@baylibre.com>
  7 */
  8
  9#include <linux/array_size.h>
 10#include <linux/dev_printk.h>
 11#include <linux/err.h>
 12#include <linux/mod_devicetable.h>
 13#include <linux/module.h>
 14#include <linux/pinctrl/consumer.h>
 15#include <linux/platform_device.h>
 16#include <linux/types.h>
 17
 18#include <sound/soc.h>
 19#include <sound/pcm_params.h>
 20
 21#include "mt8365-afe-common.h"
 22#include "../common/mtk-soc-card.h"
 23#include "../common/mtk-soundcard-driver.h"
 24
 25enum pinctrl_pin_state {
 26	PIN_STATE_DEFAULT,
 27	PIN_STATE_DMIC,
 28	PIN_STATE_MISO_OFF,
 29	PIN_STATE_MISO_ON,
 30	PIN_STATE_MOSI_OFF,
 31	PIN_STATE_MOSI_ON,
 32	PIN_STATE_MAX
 33};
 34
 35static const char * const mt8365_mt6357_pin_str[PIN_STATE_MAX] = {
 36	"default",
 37	"dmic",
 38	"miso_off",
 39	"miso_on",
 40	"mosi_off",
 41	"mosi_on",
 42};
 43
 44struct mt8365_mt6357_priv {
 45	struct pinctrl *pinctrl;
 46	struct pinctrl_state *pin_states[PIN_STATE_MAX];
 47};
 48
 49enum {
 50	/* FE */
 51	DAI_LINK_DL1_PLAYBACK = 0,
 52	DAI_LINK_DL2_PLAYBACK,
 53	DAI_LINK_AWB_CAPTURE,
 54	DAI_LINK_VUL_CAPTURE,
 55	/* BE */
 56	DAI_LINK_2ND_I2S_INTF,
 57	DAI_LINK_DMIC,
 58	DAI_LINK_INT_ADDA,
 59	DAI_LINK_NUM
 60};
 61
 62static const struct snd_soc_dapm_widget mt8365_mt6357_widgets[] = {
 63	SND_SOC_DAPM_OUTPUT("HDMI Out"),
 64};
 65
 66static const struct snd_soc_dapm_route mt8365_mt6357_routes[] = {
 67	{"HDMI Out", NULL, "2ND I2S Playback"},
 68	{"DMIC In", NULL, "MICBIAS0"},
 69};
 70
 71static int mt8365_mt6357_int_adda_startup(struct snd_pcm_substream *substream)
 72{
 73	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 74	struct mt8365_mt6357_priv *priv = snd_soc_card_get_drvdata(rtd->card);
 75	int ret = 0;
 76
 77	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 78		if (IS_ERR(priv->pin_states[PIN_STATE_MOSI_ON]))
 79			return ret;
 80
 81		ret = pinctrl_select_state(priv->pinctrl,
 82					   priv->pin_states[PIN_STATE_MOSI_ON]);
 83		if (ret)
 84			dev_err(rtd->card->dev, "%s failed to select state %d\n",
 85				__func__, ret);
 86	}
 87
 88	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
 89		if (IS_ERR(priv->pin_states[PIN_STATE_MISO_ON]))
 90			return ret;
 91
 92		ret = pinctrl_select_state(priv->pinctrl,
 93					   priv->pin_states[PIN_STATE_MISO_ON]);
 94		if (ret)
 95			dev_err(rtd->card->dev, "%s failed to select state %d\n",
 96				__func__, ret);
 97	}
 98
 99	return 0;
100}
101
102static void mt8365_mt6357_int_adda_shutdown(struct snd_pcm_substream *substream)
103{
104	struct snd_soc_pcm_runtime *rtd = substream->private_data;
105	struct mt8365_mt6357_priv *priv = snd_soc_card_get_drvdata(rtd->card);
106	int ret = 0;
107
108	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
109		if (IS_ERR(priv->pin_states[PIN_STATE_MOSI_OFF]))
110			return;
111
112		ret = pinctrl_select_state(priv->pinctrl,
113					   priv->pin_states[PIN_STATE_MOSI_OFF]);
114		if (ret)
115			dev_err(rtd->card->dev, "%s failed to select state %d\n",
116				__func__, ret);
117	}
118
119	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
120		if (IS_ERR(priv->pin_states[PIN_STATE_MISO_OFF]))
121			return;
122
123		ret = pinctrl_select_state(priv->pinctrl,
124					   priv->pin_states[PIN_STATE_MISO_OFF]);
125		if (ret)
126			dev_err(rtd->card->dev, "%s failed to select state %d\n",
127				__func__, ret);
128	}
129}
130
131static const struct snd_soc_ops mt8365_mt6357_int_adda_ops = {
132	.startup = mt8365_mt6357_int_adda_startup,
133	.shutdown = mt8365_mt6357_int_adda_shutdown,
134};
135
136SND_SOC_DAILINK_DEFS(playback1,
137		     DAILINK_COMP_ARRAY(COMP_CPU("DL1")),
138		     DAILINK_COMP_ARRAY(COMP_DUMMY()),
139		     DAILINK_COMP_ARRAY(COMP_EMPTY()));
140SND_SOC_DAILINK_DEFS(playback2,
141		     DAILINK_COMP_ARRAY(COMP_CPU("DL2")),
142		     DAILINK_COMP_ARRAY(COMP_DUMMY()),
143		     DAILINK_COMP_ARRAY(COMP_EMPTY()));
144SND_SOC_DAILINK_DEFS(awb_capture,
145		     DAILINK_COMP_ARRAY(COMP_CPU("AWB")),
146		     DAILINK_COMP_ARRAY(COMP_DUMMY()),
147		     DAILINK_COMP_ARRAY(COMP_EMPTY()));
148SND_SOC_DAILINK_DEFS(vul,
149		     DAILINK_COMP_ARRAY(COMP_CPU("VUL")),
150		     DAILINK_COMP_ARRAY(COMP_DUMMY()),
151		     DAILINK_COMP_ARRAY(COMP_EMPTY()));
152
153SND_SOC_DAILINK_DEFS(i2s3,
154		     DAILINK_COMP_ARRAY(COMP_CPU("2ND I2S")),
155		     DAILINK_COMP_ARRAY(COMP_DUMMY()),
156		     DAILINK_COMP_ARRAY(COMP_EMPTY()));
157SND_SOC_DAILINK_DEFS(dmic,
158		     DAILINK_COMP_ARRAY(COMP_CPU("DMIC")),
159		     DAILINK_COMP_ARRAY(COMP_DUMMY()),
160		     DAILINK_COMP_ARRAY(COMP_EMPTY()));
161SND_SOC_DAILINK_DEFS(primary_codec,
162		     DAILINK_COMP_ARRAY(COMP_CPU("INT ADDA")),
163		     DAILINK_COMP_ARRAY(COMP_CODEC("mt6357-sound", "mt6357-snd-codec-aif1")),
164		     DAILINK_COMP_ARRAY(COMP_EMPTY()));
165
166/* Digital audio interface glue - connects codec <---> CPU */
167static struct snd_soc_dai_link mt8365_mt6357_dais[] = {
168	/* Front End DAI links */
169	[DAI_LINK_DL1_PLAYBACK] = {
170		.name = "DL1_FE",
171		.stream_name = "MultiMedia1_PLayback",
172		.id = DAI_LINK_DL1_PLAYBACK,
173		.trigger = {
174			SND_SOC_DPCM_TRIGGER_POST,
175			SND_SOC_DPCM_TRIGGER_POST
176		},
177		.dynamic = 1,
178		.playback_only = 1,
179		.dpcm_merged_rate = 1,
180		SND_SOC_DAILINK_REG(playback1),
181	},
182	[DAI_LINK_DL2_PLAYBACK] = {
183		.name = "DL2_FE",
184		.stream_name = "MultiMedia2_PLayback",
185		.id = DAI_LINK_DL2_PLAYBACK,
186		.trigger = {
187			SND_SOC_DPCM_TRIGGER_POST,
188			SND_SOC_DPCM_TRIGGER_POST
189		},
190		.dynamic = 1,
191		.playback_only = 1,
192		.dpcm_merged_rate = 1,
193		SND_SOC_DAILINK_REG(playback2),
194	},
195	[DAI_LINK_AWB_CAPTURE] = {
196		.name = "AWB_FE",
197		.stream_name = "DL1_AWB_Record",
198		.id = DAI_LINK_AWB_CAPTURE,
199		.trigger = {
200			SND_SOC_DPCM_TRIGGER_POST,
201			SND_SOC_DPCM_TRIGGER_POST
202		},
203		.dynamic = 1,
204		.capture_only = 1,
205		.dpcm_merged_rate = 1,
206		SND_SOC_DAILINK_REG(awb_capture),
207	},
208	[DAI_LINK_VUL_CAPTURE] = {
209		.name = "VUL_FE",
210		.stream_name = "MultiMedia1_Capture",
211		.id = DAI_LINK_VUL_CAPTURE,
212		.trigger = {
213			SND_SOC_DPCM_TRIGGER_POST,
214			SND_SOC_DPCM_TRIGGER_POST
215		},
216		.dynamic = 1,
217		.capture_only = 1,
218		.dpcm_merged_rate = 1,
219		SND_SOC_DAILINK_REG(vul),
220	},
221	/* Back End DAI links */
222	[DAI_LINK_2ND_I2S_INTF] = {
223		.name = "I2S_OUT_BE",
224		.no_pcm = 1,
225		.id = DAI_LINK_2ND_I2S_INTF,
226		.dai_fmt = SND_SOC_DAIFMT_I2S |
227				SND_SOC_DAIFMT_NB_NF |
228				SND_SOC_DAIFMT_CBC_CFC,
229		SND_SOC_DAILINK_REG(i2s3),
230	},
231	[DAI_LINK_DMIC] = {
232		.name = "DMIC_BE",
233		.no_pcm = 1,
234		.id = DAI_LINK_DMIC,
235		.capture_only = 1,
236		SND_SOC_DAILINK_REG(dmic),
237	},
238	[DAI_LINK_INT_ADDA] = {
239		.name = "MTK_Codec",
240		.no_pcm = 1,
241		.id = DAI_LINK_INT_ADDA,
242		.ops = &mt8365_mt6357_int_adda_ops,
243		SND_SOC_DAILINK_REG(primary_codec),
244	},
245};
246
247static int mt8365_mt6357_gpio_probe(struct snd_soc_card *card)
248{
249	struct mt8365_mt6357_priv *priv = snd_soc_card_get_drvdata(card);
250	int ret, i;
251
252	priv->pinctrl = devm_pinctrl_get(card->dev);
253	if (IS_ERR(priv->pinctrl)) {
254		ret = PTR_ERR(priv->pinctrl);
255		return dev_err_probe(card->dev, ret,
256				     "Failed to get pinctrl\n");
257	}
258
259	for (i = PIN_STATE_DEFAULT ; i < PIN_STATE_MAX ; i++) {
260		priv->pin_states[i] = pinctrl_lookup_state(priv->pinctrl,
261							   mt8365_mt6357_pin_str[i]);
262		if (IS_ERR(priv->pin_states[i])) {
263			dev_info(card->dev, "No pin state for %s\n",
264				 mt8365_mt6357_pin_str[i]);
265		} else {
266			ret = pinctrl_select_state(priv->pinctrl,
267						   priv->pin_states[i]);
268			if (ret) {
269				dev_err_probe(card->dev, ret,
270					      "Failed to select pin state %s\n",
271					      mt8365_mt6357_pin_str[i]);
272				return ret;
273			}
274		}
275	}
276	return 0;
277}
278
279static struct snd_soc_card mt8365_mt6357_soc_card = {
280	.name = "mt8365-evk",
281	.owner = THIS_MODULE,
282	.dai_link = mt8365_mt6357_dais,
283	.num_links = ARRAY_SIZE(mt8365_mt6357_dais),
284	.dapm_widgets = mt8365_mt6357_widgets,
285	.num_dapm_widgets = ARRAY_SIZE(mt8365_mt6357_widgets),
286	.dapm_routes = mt8365_mt6357_routes,
287	.num_dapm_routes = ARRAY_SIZE(mt8365_mt6357_routes),
288};
289
290static int mt8365_mt6357_dev_probe(struct mtk_soc_card_data *soc_card_data, bool legacy)
291{
292	struct mtk_platform_card_data *card_data = soc_card_data->card_data;
293	struct snd_soc_card *card = card_data->card;
294	struct device *dev = card->dev;
295	struct mt8365_mt6357_priv *mach_priv;
296	int ret;
297
298	card->dev = dev;
299	ret = parse_dai_link_info(card);
300	if (ret)
301		goto err;
302
303	mach_priv = devm_kzalloc(dev, sizeof(*mach_priv),
304				 GFP_KERNEL);
305	if (!mach_priv)
306		return -ENOMEM;
307	soc_card_data->mach_priv = mach_priv;
308	snd_soc_card_set_drvdata(card, soc_card_data);
309	mt8365_mt6357_gpio_probe(card);
310	return 0;
311
312err:
313	clean_card_reference(card);
314	return ret;
315}
316
317static const struct mtk_soundcard_pdata mt8365_mt6357_card = {
318	.card_name = "mt8365-mt6357",
319	.card_data = &(struct mtk_platform_card_data) {
320		.card = &mt8365_mt6357_soc_card,
321	},
322	.soc_probe = mt8365_mt6357_dev_probe
323};
324
325static const struct of_device_id mt8365_mt6357_dt_match[] = {
326	{ .compatible = "mediatek,mt8365-mt6357", .data = &mt8365_mt6357_card },
327	{ /* sentinel */ }
328};
329MODULE_DEVICE_TABLE(of, mt8365_mt6357_dt_match);
330
331static struct platform_driver mt8365_mt6357_driver = {
332	.driver = {
333		   .name = "mt8365_mt6357",
334		   .of_match_table = mt8365_mt6357_dt_match,
335		   .pm = &snd_soc_pm_ops,
336	},
337	.probe = mtk_soundcard_common_probe,
338};
339
340module_platform_driver(mt8365_mt6357_driver);
341
342/* Module information */
343MODULE_DESCRIPTION("MT8365 EVK SoC machine driver");
344MODULE_AUTHOR("Nicolas Belin <nbelin@baylibre.com>");
345MODULE_LICENSE("GPL");
346MODULE_ALIAS("platform: mt8365_mt6357");