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
|
/*
* smdk64xx_wm8580.c
*
* Copyright (c) 2009 Samsung Electronics Co. Ltd
* Author: Jaswinder Singh <jassi.brar@samsung.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/platform_device.h>
#include <linux/clk.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include "../codecs/wm8580.h"
#include "s3c24xx-pcm.h"
#include "s3c64xx-i2s.h"
#define S3C64XX_I2S_V4 2
/* SMDK64XX has a 12MHZ crystal attached to WM8580 */
#define SMDK64XX_WM8580_FREQ 12000000
static int smdk64xx_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->dai->cpu_dai;
struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
unsigned int pll_out;
int bfs, rfs, ret;
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_U8:
case SNDRV_PCM_FORMAT_S8:
bfs = 16;
break;
case SNDRV_PCM_FORMAT_U16_LE:
case SNDRV_PCM_FORMAT_S16_LE:
bfs = 32;
break;
default:
return -EINVAL;
}
/* The Fvco for WM8580 PLLs must fall within [90,100]MHz.
* This criterion can't be met if we request PLL output
* as {8000x256, 64000x256, 11025x256}Hz.
* As a wayout, we rather change rfs to a minimum value that
* results in (params_rate(params) * rfs), and itself, acceptable
* to both - the CODEC and the CPU.
*/
switch (params_rate(params)) {
case 16000:
case 22050:
case 32000:
case 44100:
case 48000:
case 88200:
case 96000:
rfs = 256;
break;
case 64000:
rfs = 384;
break;
case 8000:
case 11025:
rfs = 512;
break;
default:
return -EINVAL;
}
pll_out = params_rate(params) * rfs;
/* Set the Codec DAI configuration */
ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
| SND_SOC_DAIFMT_NB_NF
| SND_SOC_DAIFMT_CBM_CFM);
if (ret < 0)
return ret;
/* Set the AP DAI configuration */
ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
| SND_SOC_DAIFMT_NB_NF
| SND_SOC_DAIFMT_CBM_CFM);
if (ret < 0)
return ret;
ret = snd_soc_dai_set_sysclk(cpu_dai, S3C64XX_CLKSRC_CDCLK,
0, SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;
/* We use PCLK for basic ops in SoC-Slave mode */
ret = snd_soc_dai_set_sysclk(cpu_dai, S3C64XX_CLKSRC_PCLK,
0, SND_SOC_CLOCK_IN);
if (ret < 0)
return ret;
/* Set WM8580 to drive MCLK from it's PLLA */
ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK,
WM8580_CLKSRC_PLLA);
if (ret < 0)
return ret;
/* Explicitly set WM8580-DAC to source from MCLK */
ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_DAC_CLKSEL,
WM8580_CLKSRC_MCLK);
if (ret < 0)
return ret;
/* Assuming the CODEC driver evaluates it's rfs too from this call */
ret = snd_soc_dai_set_pll(codec_dai, 0, WM8580_PLLA,
SMDK64XX_WM8580_FREQ, pll_out);
if (ret < 0)
return ret;
ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_I2SV2_DIV_BCLK, bfs);
if (ret < 0)
return ret;
ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_I2SV2_DIV_RCLK, rfs);
if (ret < 0)
return ret;
return 0;
}
/*
* SMDK64XX WM8580 DAI operations.
*/
static struct snd_soc_ops smdk64xx_ops = {
.hw_params = smdk64xx_hw_params,
};
/* SMDK64xx Playback widgets */
static const struct snd_soc_dapm_widget wm8580_dapm_widgets_pbk[] = {
SND_SOC_DAPM_HP("Front-L/R", NULL),
SND_SOC_DAPM_HP("Center/Sub", NULL),
SND_SOC_DAPM_HP("Rear-L/R", NULL),
};
/* SMDK64xx Capture widgets */
static const struct snd_soc_dapm_widget wm8580_dapm_widgets_cpt[] = {
SND_SOC_DAPM_MIC("MicIn", NULL),
SND_SOC_DAPM_LINE("LineIn", NULL),
};
/* SMDK-PAIFTX connections */
static const struct snd_soc_dapm_route audio_map_tx[] = {
/* MicIn feeds AINL */
{"AINL", NULL, "MicIn"},
/* LineIn feeds AINL/R */
{"AINL", NULL, "LineIn"},
{"AINR", NULL, "LineIn"},
};
/* SMDK-PAIFRX connections */
static const struct snd_soc_dapm_route audio_map_rx[] = {
/* Front Left/Right are fed VOUT1L/R */
{"Front-L/R", NULL, "VOUT1L"},
{"Front-L/R", NULL, "VOUT1R"},
/* Center/Sub are fed VOUT2L/R */
{"Center/Sub", NULL, "VOUT2L"},
{"Center/Sub", NULL, "VOUT2R"},
/* Rear Left/Right are fed VOUT3L/R */
{"Rear-L/R", NULL, "VOUT3L"},
{"Rear-L/R", NULL, "VOUT3R"},
};
static int smdk64xx_wm8580_init_paiftx(struct snd_soc_codec *codec)
{
/* Add smdk64xx specific Capture widgets */
snd_soc_dapm_new_controls(codec, wm8580_dapm_widgets_cpt,
ARRAY_SIZE(wm8580_dapm_widgets_cpt));
/* Set up PAIFTX audio path */
snd_soc_dapm_add_routes(codec, audio_map_tx, ARRAY_SIZE(audio_map_tx));
/* All enabled by default */
snd_soc_dapm_enable_pin(codec, "MicIn");
snd_soc_dapm_enable_pin(codec, "LineIn");
/* signal a DAPM event */
snd_soc_dapm_sync(codec);
return 0;
}
static int smdk64xx_wm8580_init_paifrx(struct snd_soc_codec *codec)
{
/* Add smdk64xx specific Playback widgets */
snd_soc_dapm_new_controls(codec, wm8580_dapm_widgets_pbk,
ARRAY_SIZE(wm8580_dapm_widgets_pbk));
/* Set up PAIFRX audio path */
snd_soc_dapm_add_routes(codec, audio_map_rx, ARRAY_SIZE(audio_map_rx));
/* All enabled by default */
snd_soc_dapm_enable_pin(codec, "Front-L/R");
snd_soc_dapm_enable_pin(codec, "Center/Sub");
snd_soc_dapm_enable_pin(codec, "Rear-L/R");
/* signal a DAPM event */
snd_soc_dapm_sync(codec);
return 0;
}
static struct snd_soc_dai_link smdk64xx_dai[] = {
{ /* Primary Playback i/f */
.name = "WM8580 PAIF RX",
.stream_name = "Playback",
.cpu_dai = &s3c64xx_i2s_dai[S3C64XX_I2S_V4],
.codec_dai = &wm8580_dai[WM8580_DAI_PAIFRX],
.init = smdk64xx_wm8580_init_paifrx,
.ops = &smdk64xx_ops,
},
{ /* Primary Capture i/f */
.name = "WM8580 PAIF TX",
.stream_name = "Capture",
.cpu_dai = &s3c64xx_i2s_dai[S3C64XX_I2S_V4],
.codec_dai = &wm8580_dai[WM8580_DAI_PAIFTX],
.init = smdk64xx_wm8580_init_paiftx,
.ops = &smdk64xx_ops,
},
};
static struct snd_soc_card smdk64xx = {
.name = "smdk64xx",
.platform = &s3c24xx_soc_platform,
.dai_link = smdk64xx_dai,
.num_links = ARRAY_SIZE(smdk64xx_dai),
};
static struct snd_soc_device smdk64xx_snd_devdata = {
.card = &smdk64xx,
.codec_dev = &soc_codec_dev_wm8580,
};
static struct platform_device *smdk64xx_snd_device;
static int __init smdk64xx_audio_init(void)
{
int ret;
smdk64xx_snd_device = platform_device_alloc("soc-audio", -1);
if (!smdk64xx_snd_device)
return -ENOMEM;
platform_set_drvdata(smdk64xx_snd_device, &smdk64xx_snd_devdata);
smdk64xx_snd_devdata.dev = &smdk64xx_snd_device->dev;
ret = platform_device_add(smdk64xx_snd_device);
if (ret)
platform_device_put(smdk64xx_snd_device);
return ret;
}
module_init(smdk64xx_audio_init);
MODULE_AUTHOR("Jaswinder Singh, jassi.brar@samsung.com");
MODULE_DESCRIPTION("ALSA SoC SMDK64XX WM8580");
MODULE_LICENSE("GPL");
|
