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
|
/*
* byt_cr_dpcm_rt5640.c - ASoc Machine driver for Intel Byt CR platform
*
* Copyright (C) 2014 Intel Corp
* Author: Subhransu S. Prusty <subhransu.s.prusty@intel.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; version 2 of the License.
*
* 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/init.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/device.h>
#include <linux/slab.h>
#include <linux/input.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include "../codecs/rt5640.h"
#include "sst-atom-controls.h"
static const struct snd_soc_dapm_widget byt_dapm_widgets[] = {
SND_SOC_DAPM_HP("Headphone", NULL),
SND_SOC_DAPM_MIC("Headset Mic", NULL),
SND_SOC_DAPM_MIC("Int Mic", NULL),
SND_SOC_DAPM_SPK("Ext Spk", NULL),
};
static const struct snd_soc_dapm_route byt_audio_map[] = {
{"IN2P", NULL, "Headset Mic"},
{"IN2N", NULL, "Headset Mic"},
{"Headset Mic", NULL, "MICBIAS1"},
{"IN1P", NULL, "MICBIAS1"},
{"LDO2", NULL, "Int Mic"},
{"Headphone", NULL, "HPOL"},
{"Headphone", NULL, "HPOR"},
{"Ext Spk", NULL, "SPOLP"},
{"Ext Spk", NULL, "SPOLN"},
{"Ext Spk", NULL, "SPORP"},
{"Ext Spk", NULL, "SPORN"},
{"AIF1 Playback", NULL, "ssp2 Tx"},
{"ssp2 Tx", NULL, "codec_out0"},
{"ssp2 Tx", NULL, "codec_out1"},
{"codec_in0", NULL, "ssp2 Rx"},
{"codec_in1", NULL, "ssp2 Rx"},
{"ssp2 Rx", NULL, "AIF1 Capture"},
};
static const struct snd_kcontrol_new byt_mc_controls[] = {
SOC_DAPM_PIN_SWITCH("Headphone"),
SOC_DAPM_PIN_SWITCH("Headset Mic"),
SOC_DAPM_PIN_SWITCH("Int Mic"),
SOC_DAPM_PIN_SWITCH("Ext Spk"),
};
static int byt_aif1_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;
int ret;
snd_soc_dai_set_bclk_ratio(codec_dai, 50);
ret = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_PLL1,
params_rate(params) * 512,
SND_SOC_CLOCK_IN);
if (ret < 0) {
dev_err(rtd->dev, "can't set codec clock %d\n", ret);
return ret;
}
ret = snd_soc_dai_set_pll(codec_dai, 0, RT5640_PLL1_S_BCLK1,
params_rate(params) * 50,
params_rate(params) * 512);
if (ret < 0) {
dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
return ret;
}
return 0;
}
static const struct snd_soc_pcm_stream byt_dai_params = {
.formats = SNDRV_PCM_FMTBIT_S24_LE,
.rate_min = 48000,
.rate_max = 48000,
.channels_min = 2,
.channels_max = 2,
};
static int byt_codec_fixup(struct snd_soc_pcm_runtime *rtd,
struct snd_pcm_hw_params *params)
{
struct snd_interval *rate = hw_param_interval(params,
SNDRV_PCM_HW_PARAM_RATE);
struct snd_interval *channels = hw_param_interval(params,
SNDRV_PCM_HW_PARAM_CHANNELS);
/* The DSP will covert the FE rate to 48k, stereo, 24bits */
rate->min = rate->max = 48000;
channels->min = channels->max = 2;
/* set SSP2 to 24-bit */
snd_mask_set(¶ms->masks[SNDRV_PCM_HW_PARAM_FORMAT -
SNDRV_PCM_HW_PARAM_FIRST_MASK],
SNDRV_PCM_FORMAT_S24_LE);
return 0;
}
static unsigned int rates_48000[] = {
48000,
};
static struct snd_pcm_hw_constraint_list constraints_48000 = {
.count = ARRAY_SIZE(rates_48000),
.list = rates_48000,
};
static int byt_aif1_startup(struct snd_pcm_substream *substream)
{
return snd_pcm_hw_constraint_list(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_RATE,
&constraints_48000);
}
static struct snd_soc_ops byt_aif1_ops = {
.startup = byt_aif1_startup,
};
static struct snd_soc_ops byt_be_ssp2_ops = {
.hw_params = byt_aif1_hw_params,
};
static struct snd_soc_dai_link byt_dailink[] = {
[MERR_DPCM_AUDIO] = {
.name = "Baytrail Audio Port",
.stream_name = "Baytrail Audio",
.cpu_dai_name = "media-cpu-dai",
.codec_dai_name = "snd-soc-dummy-dai",
.codec_name = "snd-soc-dummy",
.platform_name = "sst-mfld-platform",
.ignore_suspend = 1,
.dynamic = 1,
.dpcm_playback = 1,
.dpcm_capture = 1,
.ops = &byt_aif1_ops,
},
[MERR_DPCM_COMPR] = {
.name = "Baytrail Compressed Port",
.stream_name = "Baytrail Compress",
.cpu_dai_name = "compress-cpu-dai",
.codec_dai_name = "snd-soc-dummy-dai",
.codec_name = "snd-soc-dummy",
.platform_name = "sst-mfld-platform",
},
/* back ends */
{
.name = "SSP2-Codec",
.be_id = 1,
.cpu_dai_name = "ssp2-port",
.platform_name = "sst-mfld-platform",
.no_pcm = 1,
.codec_dai_name = "rt5640-aif1",
.codec_name = "i2c-10EC5640:00",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
| SND_SOC_DAIFMT_CBS_CFS,
.be_hw_params_fixup = byt_codec_fixup,
.ignore_suspend = 1,
.dpcm_playback = 1,
.dpcm_capture = 1,
.ops = &byt_be_ssp2_ops,
},
};
/* SoC card */
static struct snd_soc_card snd_soc_card_byt = {
.name = "baytrailcraudio",
.dai_link = byt_dailink,
.num_links = ARRAY_SIZE(byt_dailink),
.dapm_widgets = byt_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(byt_dapm_widgets),
.dapm_routes = byt_audio_map,
.num_dapm_routes = ARRAY_SIZE(byt_audio_map),
.controls = byt_mc_controls,
.num_controls = ARRAY_SIZE(byt_mc_controls),
};
static int snd_byt_mc_probe(struct platform_device *pdev)
{
int ret_val = 0;
/* register the soc card */
snd_soc_card_byt.dev = &pdev->dev;
ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_byt);
if (ret_val) {
dev_err(&pdev->dev, "devm_snd_soc_register_card failed %d\n", ret_val);
return ret_val;
}
platform_set_drvdata(pdev, &snd_soc_card_byt);
return ret_val;
}
static struct platform_driver snd_byt_mc_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "bytt100_rt5640",
.pm = &snd_soc_pm_ops,
},
.probe = snd_byt_mc_probe,
};
module_platform_driver(snd_byt_mc_driver);
MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver");
MODULE_AUTHOR("Subhransu S. Prusty <subhransu.s.prusty@intel.com>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:bytrt5640-audio");
|
