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
|
#include <asm/mach-types.h>
#include <linux/clk.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/gpio.h>
#include <linux/regulator/consumer.h>
#include <linux/delay.h>
#ifdef CONFIG_SWITCH
#include <linux/switch.h>
#endif
#include <mach/tegra_asoc_pdata.h>
#include <mach/gpio-tegra.h>
#include <sound/core.h>
#include <sound/jack.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include "tegra_pcm.h"
#include "tegra_asoc_utils.h"
#include <linux/tfa9887.h>
#include "tegra30_ahub.h"
#include "tegra30_i2s.h"
#include "tegra_dmic.h"
#define DRV_NAME "tegra-snd-dmic_rev1.0"
#define DAI_LINK_CAPTURE_FRONT 0
#define DAI_LINK_CAPTURE_BACK 1
static int tegra_dmic_rev1_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_codec *codec = rtd->codec;
struct snd_soc_card *card = codec->card;
struct tegra_dmic_cif dmic_cif_info = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
struct tegra_dmic_cif dmic_rx_cif_info = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
int err;
u32 sampling_rate;
u32 channels;
u32 data_format;
u32 clock_freq;
sampling_rate = params_rate(params);
channels = params_channels(params);
data_format = params_format(params);
if (sampling_rate == 8000)
clock_freq = sampling_rate * 128;/* OSR = 128 */
else
clock_freq = sampling_rate * 64;/* OSR = 64 */
err = snd_soc_dai_set_sysclk(cpu_dai, 0, clock_freq,
SND_SOC_CLOCK_IN);
if (err < 0) {
dev_err(card->dev, "cpu_dai clock not set\n");
return err;
}
/*
* Now set all cif ports.
*/
if (data_format == SNDRV_PCM_FORMAT_S16_LE) {
dmic_cif_info.audio_bits = (16 >> 2) - 1;
dmic_cif_info.client_bits = (16 >> 2) - 1;
} else if (data_format == SNDRV_PCM_FORMAT_S20_3LE) {
dmic_cif_info.audio_bits = (32 >> 2) - 1;
dmic_cif_info.client_bits = (20 >> 2) - 1;
} else if (data_format == SNDRV_PCM_FORMAT_S24_LE) {
dmic_cif_info.audio_bits = (32 >> 2) - 1;
dmic_cif_info.client_bits = (24 >> 2) - 1;
}
/*
* Always operate DMIC in stereo mode. Conversion to mono,
* can be done at later stage.
*/
dmic_cif_info.audio_channels = 2;
dmic_cif_info.client_channels = 2;
tegra_dmic_set_acif(cpu_dai, &dmic_cif_info);
dmic_rx_cif_info.audio_bits = dmic_cif_info.audio_bits;
dmic_rx_cif_info.client_bits = dmic_cif_info.audio_bits;
dmic_rx_cif_info.audio_channels = 2;
dmic_rx_cif_info.client_channels = channels;
tegra_dmic_set_rx_cif(cpu_dai, &dmic_rx_cif_info, data_format);
return 0;
}
static int tegra_dmic_rev1_hw_free(struct snd_pcm_substream *substream)
{
return 0;
}
static int tegra_dmic_rev1_startup(struct snd_pcm_substream *substream)
{
return 0;
}
static void tegra_dmic_rev1_shutdown(
struct snd_pcm_substream *substream)
{
}
static struct snd_soc_ops tegra_dmic_rev1_ops = {
.hw_params = tegra_dmic_rev1_hw_params,
.hw_free = tegra_dmic_rev1_hw_free,
.startup = tegra_dmic_rev1_startup,
.shutdown = tegra_dmic_rev1_shutdown,
};
static const struct snd_soc_dapm_widget dmic_dapm_widgets[] = {
SND_SOC_DAPM_MIC("Digital Mic", NULL),
SND_SOC_DAPM_MICBIAS("Digital Mic Bias", SND_SOC_NOPM, 0, 0),
};
static const struct snd_soc_dapm_route dmic_audio_map[] = {
{"DMic", NULL, "Digital Mic"},
{"Digital Mic", NULL, "Digital Mic Bias"},
};
static int tegra_dmic_rev1_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_codec *codec = rtd->codec;
struct snd_soc_dapm_context *dapm = &codec->dapm;
int ret;
ret = snd_soc_dapm_new_controls(dapm, dmic_dapm_widgets,
ARRAY_SIZE(dmic_dapm_widgets));
if (ret)
return ret;
return snd_soc_dapm_add_routes(dapm, dmic_audio_map,
ARRAY_SIZE(dmic_audio_map));
}
static struct snd_soc_dai_link tegra_dmic_rev1_dai[TEGRA_DMIC_COUNT] = {
[DAI_LINK_CAPTURE_FRONT] = {
.name = "DMic Front",
.stream_name = "DMIC_FRONT_CAPTURE",
.codec_name = "dmic-codec.0",
.platform_name = "tegra-dmic.0",
.codec_dai_name = "dmic-hifi",
.cpu_dai_name = "tegra-dmic.0",
.init = tegra_dmic_rev1_init,
.ops = &tegra_dmic_rev1_ops,
},
[DAI_LINK_CAPTURE_BACK] = {
.name = "DMic Back",
.stream_name = "DMIC_BACK_CAPTURE",
.codec_name = "dmic-codec.0",
.platform_name = "tegra-dmic.1",
.codec_dai_name = "dmic-hifi",
.cpu_dai_name = "tegra-dmic.1",
.init = tegra_dmic_rev1_init,
.ops = &tegra_dmic_rev1_ops,
}
};
static struct snd_soc_card snd_soc_tegra_dmic_rev1 = {
.name = "tegra-dmic-rev1.0",
.owner = THIS_MODULE,
.dai_link = tegra_dmic_rev1_dai,
.num_links = TEGRA_DMIC_COUNT,
};
static __devinit int tegra_dmic_rev1_driver_probe(
struct platform_device *pdev)
{
struct snd_soc_card *card = &snd_soc_tegra_dmic_rev1;
int ret;
card->dev = &pdev->dev;
platform_set_drvdata(pdev, card);
ret = snd_soc_register_card(card);
if (ret) {
dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
ret);
goto err_unregister_card;
}
if (!card->instantiated) {
dev_err(&pdev->dev, "No DMIC codec\n");
goto err_unregister_card;
}
return 0;
err_unregister_card:
snd_soc_unregister_card(card);
return ret;
}
static int __devexit tegra_dmic_rev1_driver_remove(
struct platform_device *pdev)
{
struct snd_soc_card *card = platform_get_drvdata(pdev);
snd_soc_unregister_card(card);
return 0;
}
static struct platform_driver tegra_dmic_rev1_driver = {
.driver = {
.name = DRV_NAME,
.owner = THIS_MODULE,
},
.probe = tegra_dmic_rev1_driver_probe,
.remove = __devexit_p(tegra_dmic_rev1_driver_remove),
};
static int __init tegra_dmic_rev1_modinit(void)
{
return platform_driver_register(&tegra_dmic_rev1_driver);
}
module_init(tegra_dmic_rev1_modinit);
static void __exit tegra_dmic_rev1_modexit(void)
{
platform_driver_unregister(&tegra_dmic_rev1_driver);
}
module_exit(tegra_dmic_rev1_modexit);
MODULE_AUTHOR("Ankit Gupta <ankitgupta@nvidia.com>");
MODULE_DESCRIPTION("Tegra + DMicRev1.0 machine ASoC driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:" DRV_NAME);
|
