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 <[email protected]>
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
25 enum 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
35 static 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
44 struct mt8365_mt6357_priv {
45 struct pinctrl *pinctrl;
46 struct pinctrl_state *pin_states[PIN_STATE_MAX];
47 };
48
49 enum {
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
62 static const struct snd_soc_dapm_widget mt8365_mt6357_widgets[] = {
63 SND_SOC_DAPM_OUTPUT("HDMI Out"),
64 };
65
66 static const struct snd_soc_dapm_route mt8365_mt6357_routes[] = {
67 {"HDMI Out", NULL, "2ND I2S Playback"},
68 {"DMIC In", NULL, "MICBIAS0"},
69 };
70
mt8365_mt6357_int_adda_startup(struct snd_pcm_substream * substream)71 static 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
mt8365_mt6357_int_adda_shutdown(struct snd_pcm_substream * substream)102 static 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
131 static 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
136 SND_SOC_DAILINK_DEFS(playback1,
137 DAILINK_COMP_ARRAY(COMP_CPU("DL1")),
138 DAILINK_COMP_ARRAY(COMP_DUMMY()),
139 DAILINK_COMP_ARRAY(COMP_EMPTY()));
140 SND_SOC_DAILINK_DEFS(playback2,
141 DAILINK_COMP_ARRAY(COMP_CPU("DL2")),
142 DAILINK_COMP_ARRAY(COMP_DUMMY()),
143 DAILINK_COMP_ARRAY(COMP_EMPTY()));
144 SND_SOC_DAILINK_DEFS(awb_capture,
145 DAILINK_COMP_ARRAY(COMP_CPU("AWB")),
146 DAILINK_COMP_ARRAY(COMP_DUMMY()),
147 DAILINK_COMP_ARRAY(COMP_EMPTY()));
148 SND_SOC_DAILINK_DEFS(vul,
149 DAILINK_COMP_ARRAY(COMP_CPU("VUL")),
150 DAILINK_COMP_ARRAY(COMP_DUMMY()),
151 DAILINK_COMP_ARRAY(COMP_EMPTY()));
152
153 SND_SOC_DAILINK_DEFS(i2s3,
154 DAILINK_COMP_ARRAY(COMP_CPU("2ND I2S")),
155 DAILINK_COMP_ARRAY(COMP_DUMMY()),
156 DAILINK_COMP_ARRAY(COMP_EMPTY()));
157 SND_SOC_DAILINK_DEFS(dmic,
158 DAILINK_COMP_ARRAY(COMP_CPU("DMIC")),
159 DAILINK_COMP_ARRAY(COMP_DUMMY()),
160 DAILINK_COMP_ARRAY(COMP_EMPTY()));
161 SND_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 */
167 static 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_CBS_CFS,
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
mt8365_mt6357_gpio_probe(struct snd_soc_card * card)247 static 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
279 static 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
mt8365_mt6357_dev_probe(struct mtk_soc_card_data * soc_card_data,bool legacy)290 static 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
312 err:
313 clean_card_reference(card);
314 return ret;
315 }
316
317 static 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
325 static const struct of_device_id mt8365_mt6357_dt_match[] = {
326 { .compatible = "mediatek,mt8365-mt6357", .data = &mt8365_mt6357_card },
327 { /* sentinel */ }
328 };
329 MODULE_DEVICE_TABLE(of, mt8365_mt6357_dt_match);
330
331 static 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
340 module_platform_driver(mt8365_mt6357_driver);
341
342 /* Module information */
343 MODULE_DESCRIPTION("MT8365 EVK SoC machine driver");
344 MODULE_AUTHOR("Nicolas Belin <[email protected]>");
345 MODULE_LICENSE("GPL");
346 MODULE_ALIAS("platform: mt8365_mt6357");
347