1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
|
/*
* mt2701-cs42448.c -- MT2701 CS42448 ALSA SoC machine driver
*
* Copyright (c) 2016 MediaTek Inc.
* Author: Ir Lian <ir.lian@mediatek.com>
* Garlic Tseng <garlic.tseng@mediatek.com>
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/module.h>
#include <sound/soc.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/pinctrl/consumer.h>
#include <linux/of_gpio.h>
#include "mt2701-afe-common.h"
struct mt2701_cs42448_private {
int i2s1_in_mux;
int i2s1_in_mux_gpio_sel_1;
int i2s1_in_mux_gpio_sel_2;
};
static const char * const i2sin_mux_switch_text[] = {
"ADC_SDOUT2",
"ADC_SDOUT3",
"I2S_IN_1",
"I2S_IN_2",
};
static const struct soc_enum i2sin_mux_enum =
SOC_ENUM_SINGLE_EXT(4, i2sin_mux_switch_text);
static int mt2701_cs42448_i2sin1_mux_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
struct mt2701_cs42448_private *priv = snd_soc_card_get_drvdata(card);
ucontrol->value.integer.value[0] = priv->i2s1_in_mux;
return 0;
}
static int mt2701_cs42448_i2sin1_mux_set(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
struct mt2701_cs42448_private *priv = snd_soc_card_get_drvdata(card);
if (ucontrol->value.integer.value[0] == priv->i2s1_in_mux)
return 0;
switch (ucontrol->value.integer.value[0]) {
case 0:
gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 0);
gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 0);
break;
case 1:
gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 1);
gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 0);
break;
case 2:
gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 0);
gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 1);
break;
case 3:
gpio_set_value(priv->i2s1_in_mux_gpio_sel_1, 1);
gpio_set_value(priv->i2s1_in_mux_gpio_sel_2, 1);
break;
default:
dev_warn(card->dev, "%s invalid setting\n", __func__);
}
priv->i2s1_in_mux = ucontrol->value.integer.value[0];
return 0;
}
static const struct snd_soc_dapm_widget
mt2701_cs42448_asoc_card_dapm_widgets[] = {
SND_SOC_DAPM_LINE("Line Out Jack", NULL),
SND_SOC_DAPM_MIC("AMIC", NULL),
SND_SOC_DAPM_LINE("Tuner In", NULL),
SND_SOC_DAPM_LINE("Satellite Tuner In", NULL),
SND_SOC_DAPM_LINE("AUX In", NULL),
};
static const struct snd_kcontrol_new mt2701_cs42448_controls[] = {
SOC_DAPM_PIN_SWITCH("Line Out Jack"),
SOC_DAPM_PIN_SWITCH("AMIC"),
SOC_DAPM_PIN_SWITCH("Tuner In"),
SOC_DAPM_PIN_SWITCH("Satellite Tuner In"),
SOC_DAPM_PIN_SWITCH("AUX In"),
SOC_ENUM_EXT("I2SIN1_MUX_Switch", i2sin_mux_enum,
mt2701_cs42448_i2sin1_mux_get,
mt2701_cs42448_i2sin1_mux_set),
};
static const unsigned int mt2701_cs42448_sampling_rates[] = {48000};
static const struct snd_pcm_hw_constraint_list mt2701_cs42448_constraints_rates = {
.count = ARRAY_SIZE(mt2701_cs42448_sampling_rates),
.list = mt2701_cs42448_sampling_rates,
.mask = 0,
};
static int mt2701_cs42448_fe_ops_startup(struct snd_pcm_substream *substream)
{
int err;
err = snd_pcm_hw_constraint_list(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_RATE,
&mt2701_cs42448_constraints_rates);
if (err < 0) {
dev_err(substream->pcm->card->dev,
"%s snd_pcm_hw_constraint_list failed: 0x%x\n",
__func__, err);
return err;
}
return 0;
}
static const struct snd_soc_ops mt2701_cs42448_48k_fe_ops = {
.startup = mt2701_cs42448_fe_ops_startup,
};
static int mt2701_cs42448_be_ops_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
struct snd_soc_dai *codec_dai = rtd->codec_dai;
unsigned int mclk_rate;
unsigned int rate = params_rate(params);
unsigned int div_mclk_over_bck = rate > 192000 ? 2 : 4;
unsigned int div_bck_over_lrck = 64;
mclk_rate = rate * div_bck_over_lrck * div_mclk_over_bck;
/* mt2701 mclk */
snd_soc_dai_set_sysclk(cpu_dai, 0, mclk_rate, SND_SOC_CLOCK_OUT);
/* codec mclk */
snd_soc_dai_set_sysclk(codec_dai, 0, mclk_rate, SND_SOC_CLOCK_IN);
return 0;
}
static struct snd_soc_ops mt2701_cs42448_be_ops = {
.hw_params = mt2701_cs42448_be_ops_hw_params
};
enum {
DAI_LINK_FE_MULTI_CH_OUT,
DAI_LINK_FE_PCM0_IN,
DAI_LINK_FE_PCM1_IN,
DAI_LINK_FE_BT_OUT,
DAI_LINK_FE_BT_IN,
DAI_LINK_BE_I2S0,
DAI_LINK_BE_I2S1,
DAI_LINK_BE_I2S2,
DAI_LINK_BE_I2S3,
DAI_LINK_BE_MRG_BT,
};
static struct snd_soc_dai_link mt2701_cs42448_dai_links[] = {
/* FE */
[DAI_LINK_FE_MULTI_CH_OUT] = {
.name = "mt2701-cs42448-multi-ch-out",
.stream_name = "mt2701-cs42448-multi-ch-out",
.cpu_dai_name = "PCM_multi",
.codec_name = "snd-soc-dummy",
.codec_dai_name = "snd-soc-dummy-dai",
.trigger = {SND_SOC_DPCM_TRIGGER_POST,
SND_SOC_DPCM_TRIGGER_POST},
.ops = &mt2701_cs42448_48k_fe_ops,
.dynamic = 1,
.dpcm_playback = 1,
},
[DAI_LINK_FE_PCM0_IN] = {
.name = "mt2701-cs42448-pcm0",
.stream_name = "mt2701-cs42448-pcm0-data-UL",
.cpu_dai_name = "PCM0",
.codec_name = "snd-soc-dummy",
.codec_dai_name = "snd-soc-dummy-dai",
.trigger = {SND_SOC_DPCM_TRIGGER_POST,
SND_SOC_DPCM_TRIGGER_POST},
.ops = &mt2701_cs42448_48k_fe_ops,
.dynamic = 1,
.dpcm_capture = 1,
},
[DAI_LINK_FE_PCM1_IN] = {
.name = "mt2701-cs42448-pcm1-data-UL",
.stream_name = "mt2701-cs42448-pcm1-data-UL",
.cpu_dai_name = "PCM1",
.codec_name = "snd-soc-dummy",
.codec_dai_name = "snd-soc-dummy-dai",
.trigger = {SND_SOC_DPCM_TRIGGER_POST,
SND_SOC_DPCM_TRIGGER_POST},
.ops = &mt2701_cs42448_48k_fe_ops,
.dynamic = 1,
.dpcm_capture = 1,
},
[DAI_LINK_FE_BT_OUT] = {
.name = "mt2701-cs42448-pcm-BT-out",
.stream_name = "mt2701-cs42448-pcm-BT",
.cpu_dai_name = "PCM_BT_DL",
.codec_name = "snd-soc-dummy",
.codec_dai_name = "snd-soc-dummy-dai",
.trigger = {SND_SOC_DPCM_TRIGGER_POST,
SND_SOC_DPCM_TRIGGER_POST},
.dynamic = 1,
.dpcm_playback = 1,
},
[DAI_LINK_FE_BT_IN] = {
.name = "mt2701-cs42448-pcm-BT-in",
.stream_name = "mt2701-cs42448-pcm-BT",
.cpu_dai_name = "PCM_BT_UL",
.codec_name = "snd-soc-dummy",
.codec_dai_name = "snd-soc-dummy-dai",
.trigger = {SND_SOC_DPCM_TRIGGER_POST,
SND_SOC_DPCM_TRIGGER_POST},
.dynamic = 1,
.dpcm_capture = 1,
},
/* BE */
[DAI_LINK_BE_I2S0] = {
.name = "mt2701-cs42448-I2S0",
.cpu_dai_name = "I2S0",
.no_pcm = 1,
.codec_dai_name = "cs42448",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
| SND_SOC_DAIFMT_GATED,
.ops = &mt2701_cs42448_be_ops,
.dpcm_playback = 1,
.dpcm_capture = 1,
},
[DAI_LINK_BE_I2S1] = {
.name = "mt2701-cs42448-I2S1",
.cpu_dai_name = "I2S1",
.no_pcm = 1,
.codec_dai_name = "cs42448",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
| SND_SOC_DAIFMT_GATED,
.ops = &mt2701_cs42448_be_ops,
.dpcm_playback = 1,
.dpcm_capture = 1,
},
[DAI_LINK_BE_I2S2] = {
.name = "mt2701-cs42448-I2S2",
.cpu_dai_name = "I2S2",
.no_pcm = 1,
.codec_dai_name = "cs42448",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
| SND_SOC_DAIFMT_GATED,
.ops = &mt2701_cs42448_be_ops,
.dpcm_playback = 1,
.dpcm_capture = 1,
},
[DAI_LINK_BE_I2S3] = {
.name = "mt2701-cs42448-I2S3",
.cpu_dai_name = "I2S3",
.no_pcm = 1,
.codec_dai_name = "cs42448",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS
| SND_SOC_DAIFMT_GATED,
.ops = &mt2701_cs42448_be_ops,
.dpcm_playback = 1,
.dpcm_capture = 1,
},
[DAI_LINK_BE_MRG_BT] = {
.name = "mt2701-cs42448-MRG-BT",
.cpu_dai_name = "MRG BT",
.no_pcm = 1,
.codec_dai_name = "bt-sco-pcm-wb",
.dpcm_playback = 1,
.dpcm_capture = 1,
},
};
static struct snd_soc_card mt2701_cs42448_soc_card = {
.name = "mt2701-cs42448",
.owner = THIS_MODULE,
.dai_link = mt2701_cs42448_dai_links,
.num_links = ARRAY_SIZE(mt2701_cs42448_dai_links),
.controls = mt2701_cs42448_controls,
.num_controls = ARRAY_SIZE(mt2701_cs42448_controls),
.dapm_widgets = mt2701_cs42448_asoc_card_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(mt2701_cs42448_asoc_card_dapm_widgets),
};
static int mt2701_cs42448_machine_probe(struct platform_device *pdev)
{
struct snd_soc_card *card = &mt2701_cs42448_soc_card;
int ret;
int i;
struct device_node *platform_node, *codec_node, *codec_node_bt_mrg;
struct mt2701_cs42448_private *priv =
devm_kzalloc(&pdev->dev, sizeof(struct mt2701_cs42448_private),
GFP_KERNEL);
struct device *dev = &pdev->dev;
if (!priv)
return -ENOMEM;
platform_node = of_parse_phandle(pdev->dev.of_node,
"mediatek,platform", 0);
if (!platform_node) {
dev_err(&pdev->dev, "Property 'platform' missing or invalid\n");
return -EINVAL;
}
for (i = 0; i < card->num_links; i++) {
if (mt2701_cs42448_dai_links[i].platform_name)
continue;
mt2701_cs42448_dai_links[i].platform_of_node = platform_node;
}
card->dev = dev;
codec_node = of_parse_phandle(pdev->dev.of_node,
"mediatek,audio-codec", 0);
if (!codec_node) {
dev_err(&pdev->dev,
"Property 'audio-codec' missing or invalid\n");
return -EINVAL;
}
for (i = 0; i < card->num_links; i++) {
if (mt2701_cs42448_dai_links[i].codec_name)
continue;
mt2701_cs42448_dai_links[i].codec_of_node = codec_node;
}
codec_node_bt_mrg = of_parse_phandle(pdev->dev.of_node,
"mediatek,audio-codec-bt-mrg", 0);
if (!codec_node_bt_mrg) {
dev_err(&pdev->dev,
"Property 'audio-codec-bt-mrg' missing or invalid\n");
return -EINVAL;
}
mt2701_cs42448_dai_links[DAI_LINK_BE_MRG_BT].codec_of_node
= codec_node_bt_mrg;
ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
if (ret) {
dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret);
return ret;
}
priv->i2s1_in_mux_gpio_sel_1 =
of_get_named_gpio(dev->of_node, "i2s1-in-sel-gpio1", 0);
if (gpio_is_valid(priv->i2s1_in_mux_gpio_sel_1)) {
ret = devm_gpio_request(dev, priv->i2s1_in_mux_gpio_sel_1,
"i2s1_in_mux_gpio_sel_1");
if (ret)
dev_warn(&pdev->dev, "%s devm_gpio_request fail %d\n",
__func__, ret);
gpio_direction_output(priv->i2s1_in_mux_gpio_sel_1, 0);
}
priv->i2s1_in_mux_gpio_sel_2 =
of_get_named_gpio(dev->of_node, "i2s1-in-sel-gpio2", 0);
if (gpio_is_valid(priv->i2s1_in_mux_gpio_sel_2)) {
ret = devm_gpio_request(dev, priv->i2s1_in_mux_gpio_sel_2,
"i2s1_in_mux_gpio_sel_2");
if (ret)
dev_warn(&pdev->dev, "%s devm_gpio_request fail2 %d\n",
__func__, ret);
gpio_direction_output(priv->i2s1_in_mux_gpio_sel_2, 0);
}
snd_soc_card_set_drvdata(card, priv);
ret = devm_snd_soc_register_card(&pdev->dev, card);
if (ret)
dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n",
__func__, ret);
return ret;
}
#ifdef CONFIG_OF
static const struct of_device_id mt2701_cs42448_machine_dt_match[] = {
{.compatible = "mediatek,mt2701-cs42448-machine",},
{}
};
#endif
static struct platform_driver mt2701_cs42448_machine = {
.driver = {
.name = "mt2701-cs42448",
#ifdef CONFIG_OF
.of_match_table = mt2701_cs42448_machine_dt_match,
#endif
},
.probe = mt2701_cs42448_machine_probe,
};
module_platform_driver(mt2701_cs42448_machine);
/* Module information */
MODULE_DESCRIPTION("MT2701 CS42448 ALSA SoC machine driver");
MODULE_AUTHOR("Ir Lian <ir.lian@mediatek.com>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("mt2701 cs42448 soc card");
|