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
|
/* sound/soc/samsung/smartq_wm8987.c
*
* Copyright 2010 Maurus Cuelenaere <mcuelenaere@gmail.com>
*
* Based on smdk6410_wm8987.c
* Copyright 2007 Wolfson Microelectronics PLC. - linux@wolfsonmicro.com
* Graeme Gregory - graeme.gregory@wolfsonmicro.com
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
*/
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <sound/soc.h>
#include <sound/jack.h>
#include "i2s.h"
#include "../codecs/wm8750.h"
/*
* WM8987 is register compatible with WM8750, so using that as base driver.
*/
static struct snd_soc_card snd_soc_smartq;
static int smartq_hifi_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 = rtd->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
unsigned int clk = 0;
int ret;
switch (params_rate(params)) {
case 8000:
case 16000:
case 32000:
case 48000:
case 96000:
clk = 12288000;
break;
case 11025:
case 22050:
case 44100:
case 88200:
clk = 11289600;
break;
}
/* Use PCLK for I2S signal generation */
ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0,
0, SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;
/* Gate the RCLK output on PAD */
ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK,
0, SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;
/* set the codec system clock for DAC and ADC */
ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;
return 0;
}
/*
* SmartQ WM8987 HiFi DAI operations.
*/
static struct snd_soc_ops smartq_hifi_ops = {
.hw_params = smartq_hifi_hw_params,
};
static struct snd_soc_jack smartq_jack;
static struct snd_soc_jack_pin smartq_jack_pins[] = {
/* Disable speaker when headphone is plugged in */
{
.pin = "Internal Speaker",
.mask = SND_JACK_HEADPHONE,
},
};
static struct snd_soc_jack_gpio smartq_jack_gpios[] = {
{
.gpio = -1,
.name = "headphone detect",
.report = SND_JACK_HEADPHONE,
.debounce_time = 200,
},
};
static const struct snd_kcontrol_new wm8987_smartq_controls[] = {
SOC_DAPM_PIN_SWITCH("Internal Speaker"),
SOC_DAPM_PIN_SWITCH("Headphone Jack"),
SOC_DAPM_PIN_SWITCH("Internal Mic"),
};
static int smartq_speaker_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *k,
int event)
{
struct gpio_desc *gpio = snd_soc_card_get_drvdata(&snd_soc_smartq);
gpiod_set_value(gpio, SND_SOC_DAPM_EVENT_OFF(event));
return 0;
}
static const struct snd_soc_dapm_widget wm8987_dapm_widgets[] = {
SND_SOC_DAPM_SPK("Internal Speaker", smartq_speaker_event),
SND_SOC_DAPM_HP("Headphone Jack", NULL),
SND_SOC_DAPM_MIC("Internal Mic", NULL),
};
static const struct snd_soc_dapm_route audio_map[] = {
{"Headphone Jack", NULL, "LOUT2"},
{"Headphone Jack", NULL, "ROUT2"},
{"Internal Speaker", NULL, "LOUT2"},
{"Internal Speaker", NULL, "ROUT2"},
{"Mic Bias", NULL, "Internal Mic"},
{"LINPUT2", NULL, "Mic Bias"},
};
static int smartq_wm8987_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_dapm_context *dapm = &rtd->card->dapm;
int err = 0;
/* set endpoints to not connected */
snd_soc_dapm_nc_pin(dapm, "LINPUT1");
snd_soc_dapm_nc_pin(dapm, "RINPUT1");
snd_soc_dapm_nc_pin(dapm, "OUT3");
snd_soc_dapm_nc_pin(dapm, "ROUT1");
/* Headphone jack detection */
err = snd_soc_card_jack_new(rtd->card, "Headphone Jack",
SND_JACK_HEADPHONE, &smartq_jack,
smartq_jack_pins,
ARRAY_SIZE(smartq_jack_pins));
if (err)
return err;
err = snd_soc_jack_add_gpios(&smartq_jack,
ARRAY_SIZE(smartq_jack_gpios),
smartq_jack_gpios);
return err;
}
static struct snd_soc_dai_link smartq_dai[] = {
{
.name = "wm8987",
.stream_name = "SmartQ Hi-Fi",
.cpu_dai_name = "samsung-i2s.0",
.codec_dai_name = "wm8750-hifi",
.platform_name = "samsung-i2s.0",
.codec_name = "wm8750.0-0x1a",
.init = smartq_wm8987_init,
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS,
.ops = &smartq_hifi_ops,
},
};
static struct snd_soc_card snd_soc_smartq = {
.name = "SmartQ",
.owner = THIS_MODULE,
.dai_link = smartq_dai,
.num_links = ARRAY_SIZE(smartq_dai),
.dapm_widgets = wm8987_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(wm8987_dapm_widgets),
.dapm_routes = audio_map,
.num_dapm_routes = ARRAY_SIZE(audio_map),
.controls = wm8987_smartq_controls,
.num_controls = ARRAY_SIZE(wm8987_smartq_controls),
};
static int smartq_probe(struct platform_device *pdev)
{
struct gpio_desc *gpio;
int ret;
platform_set_drvdata(pdev, &snd_soc_smartq);
/* Initialise GPIOs used by amplifiers */
gpio = devm_gpiod_get(&pdev->dev, "amplifiers shutdown",
GPIOD_OUT_HIGH);
if (IS_ERR(gpio)) {
dev_err(&pdev->dev, "Failed to register GPK12\n");
ret = PTR_ERR(gpio);
goto out;
}
snd_soc_card_set_drvdata(&snd_soc_smartq, gpio);
ret = devm_snd_soc_register_card(&pdev->dev, &snd_soc_smartq);
if (ret)
dev_err(&pdev->dev, "Failed to register card\n");
out:
return ret;
}
static struct platform_driver smartq_driver = {
.driver = {
.name = "smartq-audio",
},
.probe = smartq_probe,
};
module_platform_driver(smartq_driver);
/* Module information */
MODULE_AUTHOR("Maurus Cuelenaere <mcuelenaere@gmail.com>");
MODULE_DESCRIPTION("ALSA SoC SmartQ WM8987");
MODULE_LICENSE("GPL");
|
