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
|
/*
* zoom2.c -- SoC audio for Zoom2
*
* Author: Misael Lopez Cruz <x0052729@ti.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <asm/mach-types.h>
#include <mach/hardware.h>
#include <mach/gpio.h>
#include <mach/board-zoom.h>
#include <linux/platform_data/asoc-ti-mcbsp.h>
/* Register descriptions for twl4030 codec part */
#include <linux/mfd/twl4030-audio.h>
#include <linux/module.h>
#include "omap-mcbsp.h"
#include "omap-pcm.h"
#define ZOOM2_HEADSET_MUX_GPIO (OMAP_MAX_GPIO_LINES + 15)
static int zoom2_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;
/* Set the codec system clock for DAC and ADC */
ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
SND_SOC_CLOCK_IN);
if (ret < 0) {
printk(KERN_ERR "can't set codec system clock\n");
return ret;
}
return 0;
}
static struct snd_soc_ops zoom2_ops = {
.hw_params = zoom2_hw_params,
};
/* Zoom2 machine DAPM */
static const struct snd_soc_dapm_widget zoom2_twl4030_dapm_widgets[] = {
SND_SOC_DAPM_MIC("Ext Mic", NULL),
SND_SOC_DAPM_SPK("Ext Spk", NULL),
SND_SOC_DAPM_MIC("Headset Mic", NULL),
SND_SOC_DAPM_HP("Headset Stereophone", NULL),
SND_SOC_DAPM_LINE("Aux In", NULL),
};
static const struct snd_soc_dapm_route audio_map[] = {
/* External Mics: MAINMIC, SUBMIC with bias*/
{"MAINMIC", NULL, "Mic Bias 1"},
{"SUBMIC", NULL, "Mic Bias 2"},
{"Mic Bias 1", NULL, "Ext Mic"},
{"Mic Bias 2", NULL, "Ext Mic"},
/* External Speakers: HFL, HFR */
{"Ext Spk", NULL, "HFL"},
{"Ext Spk", NULL, "HFR"},
/* Headset Stereophone: HSOL, HSOR */
{"Headset Stereophone", NULL, "HSOL"},
{"Headset Stereophone", NULL, "HSOR"},
/* Headset Mic: HSMIC with bias */
{"HSMIC", NULL, "Headset Mic Bias"},
{"Headset Mic Bias", NULL, "Headset Mic"},
/* Aux In: AUXL, AUXR */
{"Aux In", NULL, "AUXL"},
{"Aux In", NULL, "AUXR"},
};
static int zoom2_twl4030_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_codec *codec = rtd->codec;
struct snd_soc_dapm_context *dapm = &codec->dapm;
/* TWL4030 not connected pins */
snd_soc_dapm_nc_pin(dapm, "CARKITMIC");
snd_soc_dapm_nc_pin(dapm, "DIGIMIC0");
snd_soc_dapm_nc_pin(dapm, "DIGIMIC1");
snd_soc_dapm_nc_pin(dapm, "EARPIECE");
snd_soc_dapm_nc_pin(dapm, "PREDRIVEL");
snd_soc_dapm_nc_pin(dapm, "PREDRIVER");
snd_soc_dapm_nc_pin(dapm, "CARKITL");
snd_soc_dapm_nc_pin(dapm, "CARKITR");
return 0;
}
static int zoom2_twl4030_voice_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_codec *codec = rtd->codec;
unsigned short reg;
/* Enable voice interface */
reg = codec->driver->read(codec, TWL4030_REG_VOICE_IF);
reg |= TWL4030_VIF_DIN_EN | TWL4030_VIF_DOUT_EN | TWL4030_VIF_EN;
codec->driver->write(codec, TWL4030_REG_VOICE_IF, reg);
return 0;
}
/* Digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link zoom2_dai[] = {
{
.name = "TWL4030 I2S",
.stream_name = "TWL4030 Audio",
.cpu_dai_name = "omap-mcbsp.2",
.codec_dai_name = "twl4030-hifi",
.platform_name = "omap-pcm-audio",
.codec_name = "twl4030-codec",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM,
.init = zoom2_twl4030_init,
.ops = &zoom2_ops,
},
{
.name = "TWL4030 PCM",
.stream_name = "TWL4030 Voice",
.cpu_dai_name = "omap-mcbsp.3",
.codec_dai_name = "twl4030-voice",
.platform_name = "omap-pcm-audio",
.codec_name = "twl4030-codec",
.dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
SND_SOC_DAIFMT_CBM_CFM,
.init = zoom2_twl4030_voice_init,
.ops = &zoom2_ops,
},
};
/* Audio machine driver */
static struct snd_soc_card snd_soc_zoom2 = {
.name = "Zoom2",
.owner = THIS_MODULE,
.dai_link = zoom2_dai,
.num_links = ARRAY_SIZE(zoom2_dai),
.dapm_widgets = zoom2_twl4030_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(zoom2_twl4030_dapm_widgets),
.dapm_routes = audio_map,
.num_dapm_routes = ARRAY_SIZE(audio_map),
};
static struct platform_device *zoom2_snd_device;
static int __init zoom2_soc_init(void)
{
int ret;
if (!machine_is_omap_zoom2())
return -ENODEV;
printk(KERN_INFO "Zoom2 SoC init\n");
zoom2_snd_device = platform_device_alloc("soc-audio", -1);
if (!zoom2_snd_device) {
printk(KERN_ERR "Platform device allocation failed\n");
return -ENOMEM;
}
platform_set_drvdata(zoom2_snd_device, &snd_soc_zoom2);
ret = platform_device_add(zoom2_snd_device);
if (ret)
goto err1;
BUG_ON(gpio_request(ZOOM2_HEADSET_MUX_GPIO, "hs_mux") < 0);
gpio_direction_output(ZOOM2_HEADSET_MUX_GPIO, 0);
BUG_ON(gpio_request(ZOOM2_HEADSET_EXTMUTE_GPIO, "ext_mute") < 0);
gpio_direction_output(ZOOM2_HEADSET_EXTMUTE_GPIO, 0);
return 0;
err1:
printk(KERN_ERR "Unable to add platform device\n");
platform_device_put(zoom2_snd_device);
return ret;
}
module_init(zoom2_soc_init);
static void __exit zoom2_soc_exit(void)
{
gpio_free(ZOOM2_HEADSET_MUX_GPIO);
gpio_free(ZOOM2_HEADSET_EXTMUTE_GPIO);
platform_device_unregister(zoom2_snd_device);
}
module_exit(zoom2_soc_exit);
MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
MODULE_DESCRIPTION("ALSA SoC Zoom2");
MODULE_LICENSE("GPL");
|
