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
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* tegra_wm8903.c - Tegra machine ASoC driver for boards using WM8903 codec.
*
* Author: Stephen Warren <swarren@nvidia.com>
* Copyright (C) 2010-2012 - NVIDIA, Inc.
*
* Based on code copyright/by:
*
* (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
*
* Copyright 2007 Wolfson Microelectronics PLC.
* Author: Graeme Gregory
* graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/gpio.h>
#include <linux/of_gpio.h>
#include <sound/core.h>
#include <sound/jack.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include "../codecs/wm8903.h"
#include "tegra_asoc_utils.h"
#define DRV_NAME "tegra-snd-wm8903"
struct tegra_wm8903 {
int gpio_spkr_en;
int gpio_hp_det;
int gpio_hp_mute;
int gpio_int_mic_en;
int gpio_ext_mic_en;
struct tegra_asoc_utils_data util_data;
};
static int tegra_wm8903_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 *codec_dai = asoc_rtd_to_codec(rtd, 0);
struct snd_soc_card *card = rtd->card;
struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
int srate, mclk;
int err;
srate = params_rate(params);
switch (srate) {
case 64000:
case 88200:
case 96000:
mclk = 128 * srate;
break;
default:
mclk = 256 * srate;
break;
}
/* FIXME: Codec only requires >= 3MHz if OSR==0 */
while (mclk < 6000000)
mclk *= 2;
err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
if (err < 0) {
dev_err(card->dev, "Can't configure clocks\n");
return err;
}
err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
SND_SOC_CLOCK_IN);
if (err < 0) {
dev_err(card->dev, "codec_dai clock not set\n");
return err;
}
return 0;
}
static const struct snd_soc_ops tegra_wm8903_ops = {
.hw_params = tegra_wm8903_hw_params,
};
static struct snd_soc_jack tegra_wm8903_hp_jack;
static struct snd_soc_jack_pin tegra_wm8903_hp_jack_pins[] = {
{
.pin = "Headphone Jack",
.mask = SND_JACK_HEADPHONE,
},
};
static struct snd_soc_jack_gpio tegra_wm8903_hp_jack_gpio = {
.name = "headphone detect",
.report = SND_JACK_HEADPHONE,
.debounce_time = 150,
.invert = 1,
};
static struct snd_soc_jack tegra_wm8903_mic_jack;
static struct snd_soc_jack_pin tegra_wm8903_mic_jack_pins[] = {
{
.pin = "Mic Jack",
.mask = SND_JACK_MICROPHONE,
},
};
static int tegra_wm8903_event_int_spk(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *k, int event)
{
struct snd_soc_dapm_context *dapm = w->dapm;
struct snd_soc_card *card = dapm->card;
struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
if (!gpio_is_valid(machine->gpio_spkr_en))
return 0;
gpio_set_value_cansleep(machine->gpio_spkr_en,
SND_SOC_DAPM_EVENT_ON(event));
return 0;
}
static int tegra_wm8903_event_hp(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *k, int event)
{
struct snd_soc_dapm_context *dapm = w->dapm;
struct snd_soc_card *card = dapm->card;
struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
if (!gpio_is_valid(machine->gpio_hp_mute))
return 0;
gpio_set_value_cansleep(machine->gpio_hp_mute,
!SND_SOC_DAPM_EVENT_ON(event));
return 0;
}
static int tegra_wm8903_event_int_mic(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *k, int event)
{
struct snd_soc_dapm_context *dapm = w->dapm;
struct snd_soc_card *card = dapm->card;
struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
if (!gpio_is_valid(machine->gpio_int_mic_en))
return 0;
gpio_set_value_cansleep(machine->gpio_int_mic_en,
SND_SOC_DAPM_EVENT_ON(event));
return 0;
}
static const struct snd_soc_dapm_widget tegra_wm8903_dapm_widgets[] = {
SND_SOC_DAPM_SPK("Int Spk", tegra_wm8903_event_int_spk),
SND_SOC_DAPM_HP("Headphone Jack", tegra_wm8903_event_hp),
SND_SOC_DAPM_MIC("Mic Jack", NULL),
SND_SOC_DAPM_MIC("Int Mic", tegra_wm8903_event_int_mic),
};
static const struct snd_kcontrol_new tegra_wm8903_controls[] = {
SOC_DAPM_PIN_SWITCH("Int Spk"),
SOC_DAPM_PIN_SWITCH("Int Mic"),
};
static int tegra_wm8903_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
struct snd_soc_component *component = codec_dai->component;
struct snd_soc_card *card = rtd->card;
struct tegra_wm8903 *machine = snd_soc_card_get_drvdata(card);
if (gpio_is_valid(machine->gpio_hp_det)) {
tegra_wm8903_hp_jack_gpio.gpio = machine->gpio_hp_det;
snd_soc_card_jack_new(rtd->card, "Headphone Jack",
SND_JACK_HEADPHONE, &tegra_wm8903_hp_jack,
tegra_wm8903_hp_jack_pins,
ARRAY_SIZE(tegra_wm8903_hp_jack_pins));
snd_soc_jack_add_gpios(&tegra_wm8903_hp_jack,
1,
&tegra_wm8903_hp_jack_gpio);
}
snd_soc_card_jack_new(rtd->card, "Mic Jack", SND_JACK_MICROPHONE,
&tegra_wm8903_mic_jack,
tegra_wm8903_mic_jack_pins,
ARRAY_SIZE(tegra_wm8903_mic_jack_pins));
wm8903_mic_detect(component, &tegra_wm8903_mic_jack, SND_JACK_MICROPHONE,
0);
snd_soc_dapm_force_enable_pin(&card->dapm, "MICBIAS");
return 0;
}
static int tegra_wm8903_remove(struct snd_soc_card *card)
{
struct snd_soc_pcm_runtime *rtd =
snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
struct snd_soc_component *component = codec_dai->component;
wm8903_mic_detect(component, NULL, 0, 0);
return 0;
}
SND_SOC_DAILINK_DEFS(hifi,
DAILINK_COMP_ARRAY(COMP_EMPTY()),
DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8903-hifi")),
DAILINK_COMP_ARRAY(COMP_EMPTY()));
static struct snd_soc_dai_link tegra_wm8903_dai = {
.name = "WM8903",
.stream_name = "WM8903 PCM",
.init = tegra_wm8903_init,
.ops = &tegra_wm8903_ops,
.dai_fmt = SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS,
SND_SOC_DAILINK_REG(hifi),
};
static struct snd_soc_card snd_soc_tegra_wm8903 = {
.name = "tegra-wm8903",
.owner = THIS_MODULE,
.dai_link = &tegra_wm8903_dai,
.num_links = 1,
.remove = tegra_wm8903_remove,
.controls = tegra_wm8903_controls,
.num_controls = ARRAY_SIZE(tegra_wm8903_controls),
.dapm_widgets = tegra_wm8903_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(tegra_wm8903_dapm_widgets),
.fully_routed = true,
};
static int tegra_wm8903_driver_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct snd_soc_card *card = &snd_soc_tegra_wm8903;
struct tegra_wm8903 *machine;
int ret;
machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm8903),
GFP_KERNEL);
if (!machine)
return -ENOMEM;
card->dev = &pdev->dev;
snd_soc_card_set_drvdata(card, machine);
machine->gpio_spkr_en = of_get_named_gpio(np, "nvidia,spkr-en-gpios",
0);
if (machine->gpio_spkr_en == -EPROBE_DEFER)
return -EPROBE_DEFER;
if (gpio_is_valid(machine->gpio_spkr_en)) {
ret = devm_gpio_request_one(&pdev->dev, machine->gpio_spkr_en,
GPIOF_OUT_INIT_LOW,
|