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 <linux/i2c.h>
18 #include <sound/core.h>
19 #include <sound/pcm.h>
20 #include <sound/soc.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->codec_dai;
35 struct snd_soc_dai *cpu_dai = rtd->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 struct snd_soc_dapm_context *dapm = &codec->dapm;
110 unsigned int val = (ucontrol->value.enumerated.item[0] != 0);
111 char *differential = "Audio Out Differential";
112 char *stereo = "Audio Out Stereo";
114 if (kcontrol->private_value == val)
116 kcontrol->private_value = val;
117 snd_soc_dapm_disable_pin(dapm, val ? differential : stereo);
118 snd_soc_dapm_sync(dapm);
119 snd_soc_dapm_enable_pin(dapm, val ? stereo : differential);
120 snd_soc_dapm_sync(dapm);
125 static const struct snd_kcontrol_new audio_out_mux = {
126 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
127 .name = "Master Output Mux",
129 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
130 .info = output_type_info,
131 .get = output_type_get,
132 .put = output_type_put,
133 .private_value = 1 /* default to stereo */
136 /* Logic for a aic3x as connected on the s6105 ip camera ref design */
137 static int s6105_aic3x_init(struct snd_soc_pcm_runtime *rtd)
139 struct snd_soc_codec *codec = rtd->codec;
140 struct snd_soc_dapm_context *dapm = &codec->dapm;
142 /* Add s6105 specific widgets */
143 snd_soc_dapm_new_controls(dapm, aic3x_dapm_widgets,
144 ARRAY_SIZE(aic3x_dapm_widgets));
146 /* Set up s6105 specific audio path audio_map */
147 snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
150 snd_soc_dapm_nc_pin(dapm, "MONO_LOUT");
151 snd_soc_dapm_nc_pin(dapm, "LINE2L");
152 snd_soc_dapm_nc_pin(dapm, "LINE2R");
155 snd_soc_dapm_nc_pin(dapm, "MIC3L"); /* LINE2L on this chip */
156 snd_soc_dapm_nc_pin(dapm, "MIC3R"); /* LINE2R on this chip */
157 snd_soc_dapm_nc_pin(dapm, "LLOUT");
158 snd_soc_dapm_nc_pin(dapm, "RLOUT");
159 snd_soc_dapm_nc_pin(dapm, "HPRCOM");
161 /* always connected */
162 snd_soc_dapm_enable_pin(dapm, "Audio In");
164 /* must correspond to audio_out_mux.private_value initializer */
165 snd_soc_dapm_disable_pin(dapm, "Audio Out Differential");
166 snd_soc_dapm_sync(dapm);
167 snd_soc_dapm_enable_pin(dapm, "Audio Out Stereo");
169 snd_soc_dapm_sync(dapm);
171 snd_ctl_add(codec->card->snd_card, snd_ctl_new1(&audio_out_mux, codec));
176 /* s6105 digital audio interface glue - connects codec <--> CPU */
177 static struct snd_soc_dai_link s6105_dai = {
178 .name = "TLV320AIC31",
179 .stream_name = "AIC31",
180 .cpu_dai_name = "s6000-i2s",
181 .codec_dai_name = "tlv320aic3x-hifi",
182 .platform_name = "s6000-pcm-audio",
183 .codec_name = "tlv320aic3x-codec.0-001a",
184 .init = s6105_aic3x_init,
188 /* s6105 audio machine driver */
189 static struct snd_soc_card snd_soc_card_s6105 = {
190 .name = "Stretch IP Camera",
191 .dai_link = &s6105_dai,
195 static struct s6000_snd_platform_data __initdata s6105_snd_data = {
204 static struct platform_device *s6105_snd_device;
206 /* temporary i2c device creation until this can be moved into the machine
209 static struct i2c_board_info i2c_device[] = {
210 { I2C_BOARD_INFO("tlv320aic33", 0x18), }
213 static int __init s6105_init(void)
217 i2c_register_board_info(0, i2c_device, ARRAY_SIZE(i2c_device));
219 s6105_snd_device = platform_device_alloc("soc-audio", -1);
220 if (!s6105_snd_device)
223 platform_set_drvdata(s6105_snd_device, &snd_soc_card_s6105);
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");