Commit | Line | Data |
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2b7dbbe0 DG |
1 | /* |
2 | * ASoC driver for Stretch s6105 IP camera platform | |
3 | * | |
4 | * Author: Daniel Gloeckner, <dg@emlix.com> | |
5 | * Copyright: (C) 2009 emlix GmbH <info@emlix.com> | |
6 | * | |
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. | |
10 | */ | |
11 | ||
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> | |
21 | ||
22 | #include <variant/dmac.h> | |
23 | ||
24 | #include "../codecs/tlv320aic3x.h" | |
25 | #include "s6000-pcm.h" | |
26 | #include "s6000-i2s.h" | |
27 | ||
28 | #define S6105_CAM_CODEC_CLOCK 12288000 | |
29 | ||
30 | static int s6105_hw_params(struct snd_pcm_substream *substream, | |
31 | struct snd_pcm_hw_params *params) | |
32 | { | |
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; | |
36 | int ret = 0; | |
37 | ||
38 | /* set codec DAI configuration */ | |
39 | ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | | |
40 | SND_SOC_DAIFMT_CBM_CFM); | |
41 | if (ret < 0) | |
42 | return ret; | |
43 | ||
44 | /* set cpu DAI configuration */ | |
45 | ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_CBM_CFM | | |
46 | SND_SOC_DAIFMT_IB_IF); | |
47 | if (ret < 0) | |
48 | return ret; | |
49 | ||
50 | /* set the codec system clock */ | |
51 | ret = snd_soc_dai_set_sysclk(codec_dai, 0, S6105_CAM_CODEC_CLOCK, | |
52 | SND_SOC_CLOCK_OUT); | |
53 | if (ret < 0) | |
54 | return ret; | |
55 | ||
56 | return 0; | |
57 | } | |
58 | ||
59 | static struct snd_soc_ops s6105_ops = { | |
60 | .hw_params = s6105_hw_params, | |
61 | }; | |
62 | ||
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), | |
68 | }; | |
69 | ||
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"}, | |
77 | ||
78 | /* Audio In connected to LINE1L, LINE1R */ | |
79 | {"LINE1L", NULL, "Audio In"}, | |
80 | {"LINE1R", NULL, "Audio In"}, | |
81 | }; | |
82 | ||
83 | static int output_type_info(struct snd_kcontrol *kcontrol, | |
84 | struct snd_ctl_elem_info *uinfo) | |
85 | { | |
86 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
87 | uinfo->count = 1; | |
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"); | |
92 | } else { | |
93 | strcpy(uinfo->value.enumerated.name, "HPLOUT/HPLCOM"); | |
94 | } | |
95 | return 0; | |
96 | } | |
97 | ||
98 | static int output_type_get(struct snd_kcontrol *kcontrol, | |
99 | struct snd_ctl_elem_value *ucontrol) | |
100 | { | |
101 | ucontrol->value.enumerated.item[0] = kcontrol->private_value; | |
102 | return 0; | |
103 | } | |
104 | ||
105 | static int output_type_put(struct snd_kcontrol *kcontrol, | |
106 | struct snd_ctl_elem_value *ucontrol) | |
107 | { | |
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"; | |
112 | ||
113 | if (kcontrol->private_value == val) | |
114 | return 0; | |
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); | |
120 | ||
121 | return 1; | |
122 | } | |
123 | ||
124 | static const struct snd_kcontrol_new audio_out_mux = { | |
125 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
126 | .name = "Master Output Mux", | |
127 | .index = 0, | |
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 */ | |
133 | }; | |
134 | ||
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) | |
137 | { | |
138 | /* Add s6105 specific widgets */ | |
139 | snd_soc_dapm_new_controls(codec, aic3x_dapm_widgets, | |
140 | ARRAY_SIZE(aic3x_dapm_widgets)); | |
141 | ||
142 | /* Set up s6105 specific audio path audio_map */ | |
143 | snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); | |
144 | ||
145 | /* not present */ | |
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"); | |
149 | ||
150 | /* not connected */ | |
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"); | |
156 | ||
157 | /* always connected */ | |
158 | snd_soc_dapm_enable_pin(codec, "Audio In"); | |
159 | ||
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"); | |
164 | ||
165 | snd_soc_dapm_sync(codec); | |
166 | ||
167 | snd_ctl_add(codec->card, snd_ctl_new1(&audio_out_mux, codec)); | |
168 | ||
169 | return 0; | |
170 | } | |
171 | ||
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, | |
179 | .ops = &s6105_ops, | |
180 | }; | |
181 | ||
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, | |
187 | .num_links = 1, | |
188 | }; | |
189 | ||
190 | /* s6105 audio private data */ | |
191 | static struct aic3x_setup_data s6105_aic3x_setup = { | |
192 | .i2c_bus = 0, | |
193 | .i2c_address = 0x18, | |
194 | }; | |
195 | ||
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, | |
201 | }; | |
202 | ||
203 | static struct s6000_snd_platform_data __initdata s6105_snd_data = { | |
204 | .wide = 0, | |
205 | .channel_in = 0, | |
206 | .channel_out = 1, | |
207 | .lines_in = 1, | |
208 | .lines_out = 1, | |
209 | .same_rate = 1, | |
210 | }; | |
211 | ||
212 | static struct platform_device *s6105_snd_device; | |
213 | ||
214 | static int __init s6105_init(void) | |
215 | { | |
216 | int ret; | |
217 | ||
218 | s6105_snd_device = platform_device_alloc("soc-audio", -1); | |
219 | if (!s6105_snd_device) | |
220 | return -ENOMEM; | |
221 | ||
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)); | |
226 | ||
227 | ret = platform_device_add(s6105_snd_device); | |
228 | if (ret) | |
229 | platform_device_put(s6105_snd_device); | |
230 | ||
231 | return ret; | |
232 | } | |
233 | ||
234 | static void __exit s6105_exit(void) | |
235 | { | |
236 | platform_device_unregister(s6105_snd_device); | |
237 | } | |
238 | ||
239 | module_init(s6105_init); | |
240 | module_exit(s6105_exit); | |
241 | ||
242 | MODULE_AUTHOR("Daniel Gloeckner"); | |
243 | MODULE_DESCRIPTION("Stretch s6105 IP camera ASoC driver"); | |
244 | MODULE_LICENSE("GPL"); |