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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> | |
aa6b904e | 17 | #include <linux/i2c.h> |
2b7dbbe0 DG |
18 | #include <sound/core.h> |
19 | #include <sound/pcm.h> | |
20 | #include <sound/soc.h> | |
21 | #include <sound/soc-dapm.h> | |
22 | ||
23 | #include <variant/dmac.h> | |
24 | ||
25 | #include "../codecs/tlv320aic3x.h" | |
26 | #include "s6000-pcm.h" | |
27 | #include "s6000-i2s.h" | |
28 | ||
29 | #define S6105_CAM_CODEC_CLOCK 12288000 | |
30 | ||
31 | static int s6105_hw_params(struct snd_pcm_substream *substream, | |
32 | struct snd_pcm_hw_params *params) | |
33 | { | |
34 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
35 | struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; | |
36 | struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; | |
37 | int ret = 0; | |
38 | ||
39 | /* set codec DAI configuration */ | |
40 | ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | | |
41 | SND_SOC_DAIFMT_CBM_CFM); | |
42 | if (ret < 0) | |
43 | return ret; | |
44 | ||
45 | /* set cpu DAI configuration */ | |
46 | ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_CBM_CFM | | |
80fbe6ac | 47 | SND_SOC_DAIFMT_NB_NF); |
2b7dbbe0 DG |
48 | if (ret < 0) |
49 | return ret; | |
50 | ||
51 | /* set the codec system clock */ | |
52 | ret = snd_soc_dai_set_sysclk(codec_dai, 0, S6105_CAM_CODEC_CLOCK, | |
53 | SND_SOC_CLOCK_OUT); | |
54 | if (ret < 0) | |
55 | return ret; | |
56 | ||
57 | return 0; | |
58 | } | |
59 | ||
60 | static struct snd_soc_ops s6105_ops = { | |
61 | .hw_params = s6105_hw_params, | |
62 | }; | |
63 | ||
64 | /* s6105 machine dapm widgets */ | |
65 | static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = { | |
66 | SND_SOC_DAPM_LINE("Audio Out Differential", NULL), | |
67 | SND_SOC_DAPM_LINE("Audio Out Stereo", NULL), | |
68 | SND_SOC_DAPM_LINE("Audio In", NULL), | |
69 | }; | |
70 | ||
71 | /* s6105 machine audio_mapnections to the codec pins */ | |
72 | static const struct snd_soc_dapm_route audio_map[] = { | |
73 | /* Audio Out connected to HPLOUT, HPLCOM, HPROUT */ | |
74 | {"Audio Out Differential", NULL, "HPLOUT"}, | |
75 | {"Audio Out Differential", NULL, "HPLCOM"}, | |
76 | {"Audio Out Stereo", NULL, "HPLOUT"}, | |
77 | {"Audio Out Stereo", NULL, "HPROUT"}, | |
78 | ||
79 | /* Audio In connected to LINE1L, LINE1R */ | |
80 | {"LINE1L", NULL, "Audio In"}, | |
81 | {"LINE1R", NULL, "Audio In"}, | |
82 | }; | |
83 | ||
84 | static int output_type_info(struct snd_kcontrol *kcontrol, | |
85 | struct snd_ctl_elem_info *uinfo) | |
86 | { | |
87 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
88 | uinfo->count = 1; | |
89 | uinfo->value.enumerated.items = 2; | |
90 | if (uinfo->value.enumerated.item) { | |
91 | uinfo->value.enumerated.item = 1; | |
92 | strcpy(uinfo->value.enumerated.name, "HPLOUT/HPROUT"); | |
93 | } else { | |
94 | strcpy(uinfo->value.enumerated.name, "HPLOUT/HPLCOM"); | |
95 | } | |
96 | return 0; | |
97 | } | |
98 | ||
99 | static int output_type_get(struct snd_kcontrol *kcontrol, | |
100 | struct snd_ctl_elem_value *ucontrol) | |
101 | { | |
102 | ucontrol->value.enumerated.item[0] = kcontrol->private_value; | |
103 | return 0; | |
104 | } | |
105 | ||
106 | static int output_type_put(struct snd_kcontrol *kcontrol, | |
107 | struct snd_ctl_elem_value *ucontrol) | |
108 | { | |
109 | struct snd_soc_codec *codec = kcontrol->private_data; | |
110 | unsigned int val = (ucontrol->value.enumerated.item[0] != 0); | |
111 | char *differential = "Audio Out Differential"; | |
112 | char *stereo = "Audio Out Stereo"; | |
113 | ||
114 | if (kcontrol->private_value == val) | |
115 | return 0; | |
116 | kcontrol->private_value = val; | |
117 | snd_soc_dapm_disable_pin(codec, val ? differential : stereo); | |
118 | snd_soc_dapm_sync(codec); | |
119 | snd_soc_dapm_enable_pin(codec, val ? stereo : differential); | |
120 | snd_soc_dapm_sync(codec); | |
121 | ||
122 | return 1; | |
123 | } | |
124 | ||
125 | static const struct snd_kcontrol_new audio_out_mux = { | |
126 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, | |
127 | .name = "Master Output Mux", | |
128 | .index = 0, | |
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 */ | |
134 | }; | |
135 | ||
136 | /* Logic for a aic3x as connected on the s6105 ip camera ref design */ | |
137 | static int s6105_aic3x_init(struct snd_soc_codec *codec) | |
138 | { | |
139 | /* Add s6105 specific widgets */ | |
140 | snd_soc_dapm_new_controls(codec, aic3x_dapm_widgets, | |
141 | ARRAY_SIZE(aic3x_dapm_widgets)); | |
142 | ||
143 | /* Set up s6105 specific audio path audio_map */ | |
144 | snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); | |
145 | ||
146 | /* not present */ | |
147 | snd_soc_dapm_nc_pin(codec, "MONO_LOUT"); | |
148 | snd_soc_dapm_nc_pin(codec, "LINE2L"); | |
149 | snd_soc_dapm_nc_pin(codec, "LINE2R"); | |
150 | ||
151 | /* not connected */ | |
152 | snd_soc_dapm_nc_pin(codec, "MIC3L"); /* LINE2L on this chip */ | |
153 | snd_soc_dapm_nc_pin(codec, "MIC3R"); /* LINE2R on this chip */ | |
154 | snd_soc_dapm_nc_pin(codec, "LLOUT"); | |
155 | snd_soc_dapm_nc_pin(codec, "RLOUT"); | |
156 | snd_soc_dapm_nc_pin(codec, "HPRCOM"); | |
157 | ||
158 | /* always connected */ | |
159 | snd_soc_dapm_enable_pin(codec, "Audio In"); | |
160 | ||
161 | /* must correspond to audio_out_mux.private_value initializer */ | |
162 | snd_soc_dapm_disable_pin(codec, "Audio Out Differential"); | |
163 | snd_soc_dapm_sync(codec); | |
164 | snd_soc_dapm_enable_pin(codec, "Audio Out Stereo"); | |
165 | ||
166 | snd_soc_dapm_sync(codec); | |
167 | ||
168 | snd_ctl_add(codec->card, snd_ctl_new1(&audio_out_mux, codec)); | |
169 | ||
170 | return 0; | |
171 | } | |
172 | ||
173 | /* s6105 digital audio interface glue - connects codec <--> CPU */ | |
174 | static struct snd_soc_dai_link s6105_dai = { | |
175 | .name = "TLV320AIC31", | |
176 | .stream_name = "AIC31", | |
177 | .cpu_dai = &s6000_i2s_dai, | |
178 | .codec_dai = &aic3x_dai, | |
179 | .init = s6105_aic3x_init, | |
180 | .ops = &s6105_ops, | |
181 | }; | |
182 | ||
183 | /* s6105 audio machine driver */ | |
184 | static struct snd_soc_card snd_soc_card_s6105 = { | |
185 | .name = "Stretch IP Camera", | |
186 | .platform = &s6000_soc_platform, | |
187 | .dai_link = &s6105_dai, | |
188 | .num_links = 1, | |
189 | }; | |
190 | ||
191 | /* s6105 audio private data */ | |
192 | static struct aic3x_setup_data s6105_aic3x_setup = { | |
2b7dbbe0 DG |
193 | }; |
194 | ||
195 | /* s6105 audio subsystem */ | |
196 | static struct snd_soc_device s6105_snd_devdata = { | |
197 | .card = &snd_soc_card_s6105, | |
198 | .codec_dev = &soc_codec_dev_aic3x, | |
199 | .codec_data = &s6105_aic3x_setup, | |
200 | }; | |
201 | ||
202 | static struct s6000_snd_platform_data __initdata s6105_snd_data = { | |
203 | .wide = 0, | |
204 | .channel_in = 0, | |
205 | .channel_out = 1, | |
206 | .lines_in = 1, | |
207 | .lines_out = 1, | |
208 | .same_rate = 1, | |
209 | }; | |
210 | ||
211 | static struct platform_device *s6105_snd_device; | |
212 | ||
aa6b904e BD |
213 | /* temporary i2c device creation until this can be moved into the machine |
214 | * support file. | |
215 | */ | |
216 | static struct i2c_board_info i2c_device[] = { | |
217 | { I2C_BOARD_INFO("tlv320aic33", 0x18), } | |
218 | }; | |
219 | ||
2b7dbbe0 DG |
220 | static int __init s6105_init(void) |
221 | { | |
222 | int ret; | |
223 | ||
aa6b904e BD |
224 | i2c_register_board_info(0, i2c_device, ARRAY_SIZE(i2c_device)); |
225 | ||
2b7dbbe0 DG |
226 | s6105_snd_device = platform_device_alloc("soc-audio", -1); |
227 | if (!s6105_snd_device) | |
228 | return -ENOMEM; | |
229 | ||
230 | platform_set_drvdata(s6105_snd_device, &s6105_snd_devdata); | |
231 | s6105_snd_devdata.dev = &s6105_snd_device->dev; | |
232 | platform_device_add_data(s6105_snd_device, &s6105_snd_data, | |
233 | sizeof(s6105_snd_data)); | |
234 | ||
235 | ret = platform_device_add(s6105_snd_device); | |
236 | if (ret) | |
237 | platform_device_put(s6105_snd_device); | |
238 | ||
239 | return ret; | |
240 | } | |
241 | ||
242 | static void __exit s6105_exit(void) | |
243 | { | |
244 | platform_device_unregister(s6105_snd_device); | |
245 | } | |
246 | ||
247 | module_init(s6105_init); | |
248 | module_exit(s6105_exit); | |
249 | ||
250 | MODULE_AUTHOR("Daniel Gloeckner"); | |
251 | MODULE_DESCRIPTION("Stretch s6105 IP camera ASoC driver"); | |
252 | MODULE_LICENSE("GPL"); |