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