2 * ASoC driver for Stretch s6105 IP camera platform
4 * Author: Daniel Gloeckner, <dg@emlix.com>
5 * Copyright: (C) 2009 emlix GmbH <info@emlix.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
12 #include <linux/module.h>
13 #include <linux/moduleparam.h>
14 #include <linux/timer.h>
15 #include <linux/interrupt.h>
16 #include <linux/platform_device.h>
17 #include <sound/core.h>
18 #include <sound/pcm.h>
19 #include <sound/soc.h>
20 #include <sound/soc-dapm.h>
22 #include <variant/dmac.h>
24 #include "../codecs/tlv320aic3x.h"
25 #include "s6000-pcm.h"
26 #include "s6000-i2s.h"
28 #define S6105_CAM_CODEC_CLOCK 12288000
30 static int s6105_hw_params(struct snd_pcm_substream
*substream
,
31 struct snd_pcm_hw_params
*params
)
33 struct snd_soc_pcm_runtime
*rtd
= substream
->private_data
;
34 struct snd_soc_dai
*codec_dai
= rtd
->dai
->codec_dai
;
35 struct snd_soc_dai
*cpu_dai
= rtd
->dai
->cpu_dai
;
38 /* set codec DAI configuration */
39 ret
= snd_soc_dai_set_fmt(codec_dai
, SND_SOC_DAIFMT_I2S
|
40 SND_SOC_DAIFMT_CBM_CFM
);
44 /* set cpu DAI configuration */
45 ret
= snd_soc_dai_set_fmt(cpu_dai
, SND_SOC_DAIFMT_CBM_CFM
|
46 SND_SOC_DAIFMT_NB_NF
);
50 /* set the codec system clock */
51 ret
= snd_soc_dai_set_sysclk(codec_dai
, 0, S6105_CAM_CODEC_CLOCK
,
59 static struct snd_soc_ops s6105_ops
= {
60 .hw_params
= s6105_hw_params
,
63 /* s6105 machine dapm widgets */
64 static const struct snd_soc_dapm_widget aic3x_dapm_widgets
[] = {
65 SND_SOC_DAPM_LINE("Audio Out Differential", NULL
),
66 SND_SOC_DAPM_LINE("Audio Out Stereo", NULL
),
67 SND_SOC_DAPM_LINE("Audio In", NULL
),
70 /* s6105 machine audio_mapnections to the codec pins */
71 static const struct snd_soc_dapm_route audio_map
[] = {
72 /* Audio Out connected to HPLOUT, HPLCOM, HPROUT */
73 {"Audio Out Differential", NULL
, "HPLOUT"},
74 {"Audio Out Differential", NULL
, "HPLCOM"},
75 {"Audio Out Stereo", NULL
, "HPLOUT"},
76 {"Audio Out Stereo", NULL
, "HPROUT"},
78 /* Audio In connected to LINE1L, LINE1R */
79 {"LINE1L", NULL
, "Audio In"},
80 {"LINE1R", NULL
, "Audio In"},
83 static int output_type_info(struct snd_kcontrol
*kcontrol
,
84 struct snd_ctl_elem_info
*uinfo
)
86 uinfo
->type
= SNDRV_CTL_ELEM_TYPE_ENUMERATED
;
88 uinfo
->value
.enumerated
.items
= 2;
89 if (uinfo
->value
.enumerated
.item
) {
90 uinfo
->value
.enumerated
.item
= 1;
91 strcpy(uinfo
->value
.enumerated
.name
, "HPLOUT/HPROUT");
93 strcpy(uinfo
->value
.enumerated
.name
, "HPLOUT/HPLCOM");
98 static int output_type_get(struct snd_kcontrol
*kcontrol
,
99 struct snd_ctl_elem_value
*ucontrol
)
101 ucontrol
->value
.enumerated
.item
[0] = kcontrol
->private_value
;
105 static int output_type_put(struct snd_kcontrol
*kcontrol
,
106 struct snd_ctl_elem_value
*ucontrol
)
108 struct snd_soc_codec
*codec
= kcontrol
->private_data
;
109 unsigned int val
= (ucontrol
->value
.enumerated
.item
[0] != 0);
110 char *differential
= "Audio Out Differential";
111 char *stereo
= "Audio Out Stereo";
113 if (kcontrol
->private_value
== val
)
115 kcontrol
->private_value
= val
;
116 snd_soc_dapm_disable_pin(codec
, val
? differential
: stereo
);
117 snd_soc_dapm_sync(codec
);
118 snd_soc_dapm_enable_pin(codec
, val
? stereo
: differential
);
119 snd_soc_dapm_sync(codec
);
124 static const struct snd_kcontrol_new audio_out_mux
= {
125 .iface
= SNDRV_CTL_ELEM_IFACE_MIXER
,
126 .name
= "Master Output Mux",
128 .access
= SNDRV_CTL_ELEM_ACCESS_READWRITE
,
129 .info
= output_type_info
,
130 .get
= output_type_get
,
131 .put
= output_type_put
,
132 .private_value
= 1 /* default to stereo */
135 /* Logic for a aic3x as connected on the s6105 ip camera ref design */
136 static int s6105_aic3x_init(struct snd_soc_codec
*codec
)
138 /* Add s6105 specific widgets */
139 snd_soc_dapm_new_controls(codec
, aic3x_dapm_widgets
,
140 ARRAY_SIZE(aic3x_dapm_widgets
));
142 /* Set up s6105 specific audio path audio_map */
143 snd_soc_dapm_add_routes(codec
, audio_map
, ARRAY_SIZE(audio_map
));
146 snd_soc_dapm_nc_pin(codec
, "MONO_LOUT");
147 snd_soc_dapm_nc_pin(codec
, "LINE2L");
148 snd_soc_dapm_nc_pin(codec
, "LINE2R");
151 snd_soc_dapm_nc_pin(codec
, "MIC3L"); /* LINE2L on this chip */
152 snd_soc_dapm_nc_pin(codec
, "MIC3R"); /* LINE2R on this chip */
153 snd_soc_dapm_nc_pin(codec
, "LLOUT");
154 snd_soc_dapm_nc_pin(codec
, "RLOUT");
155 snd_soc_dapm_nc_pin(codec
, "HPRCOM");
157 /* always connected */
158 snd_soc_dapm_enable_pin(codec
, "Audio In");
160 /* must correspond to audio_out_mux.private_value initializer */
161 snd_soc_dapm_disable_pin(codec
, "Audio Out Differential");
162 snd_soc_dapm_sync(codec
);
163 snd_soc_dapm_enable_pin(codec
, "Audio Out Stereo");
165 snd_soc_dapm_sync(codec
);
167 snd_ctl_add(codec
->card
, snd_ctl_new1(&audio_out_mux
, codec
));
172 /* s6105 digital audio interface glue - connects codec <--> CPU */
173 static struct snd_soc_dai_link s6105_dai
= {
174 .name
= "TLV320AIC31",
175 .stream_name
= "AIC31",
176 .cpu_dai
= &s6000_i2s_dai
,
177 .codec_dai
= &aic3x_dai
,
178 .init
= s6105_aic3x_init
,
182 /* s6105 audio machine driver */
183 static struct snd_soc_card snd_soc_card_s6105
= {
184 .name
= "Stretch IP Camera",
185 .platform
= &s6000_soc_platform
,
186 .dai_link
= &s6105_dai
,
190 /* s6105 audio private data */
191 static struct aic3x_setup_data s6105_aic3x_setup
= {
196 /* s6105 audio subsystem */
197 static struct snd_soc_device s6105_snd_devdata
= {
198 .card
= &snd_soc_card_s6105
,
199 .codec_dev
= &soc_codec_dev_aic3x
,
200 .codec_data
= &s6105_aic3x_setup
,
203 static struct s6000_snd_platform_data __initdata s6105_snd_data
= {
212 static struct platform_device
*s6105_snd_device
;
214 static int __init
s6105_init(void)
218 s6105_snd_device
= platform_device_alloc("soc-audio", -1);
219 if (!s6105_snd_device
)
222 platform_set_drvdata(s6105_snd_device
, &s6105_snd_devdata
);
223 s6105_snd_devdata
.dev
= &s6105_snd_device
->dev
;
224 platform_device_add_data(s6105_snd_device
, &s6105_snd_data
,
225 sizeof(s6105_snd_data
));
227 ret
= platform_device_add(s6105_snd_device
);
229 platform_device_put(s6105_snd_device
);
234 static void __exit
s6105_exit(void)
236 platform_device_unregister(s6105_snd_device
);
239 module_init(s6105_init
);
240 module_exit(s6105_exit
);
242 MODULE_AUTHOR("Daniel Gloeckner");
243 MODULE_DESCRIPTION("Stretch s6105 IP camera ASoC driver");
244 MODULE_LICENSE("GPL");