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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> | |
2b7dbbe0 DG |
21 | |
22 | #include <variant/dmac.h> | |
23 | ||
2b7dbbe0 DG |
24 | #include "s6000-pcm.h" |
25 | #include "s6000-i2s.h" | |
26 | ||
27 | #define S6105_CAM_CODEC_CLOCK 12288000 | |
28 | ||
29 | static int s6105_hw_params(struct snd_pcm_substream *substream, | |
30 | struct snd_pcm_hw_params *params) | |
31 | { | |
32 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
f0fba2ad LG |
33 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
34 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
2b7dbbe0 DG |
35 | int ret = 0; |
36 | ||
37 | /* set codec DAI configuration */ | |
38 | ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | | |
39 | SND_SOC_DAIFMT_CBM_CFM); | |
40 | if (ret < 0) | |
41 | return ret; | |
42 | ||
43 | /* set cpu DAI configuration */ | |
44 | ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_CBM_CFM | | |
80fbe6ac | 45 | SND_SOC_DAIFMT_NB_NF); |
2b7dbbe0 DG |
46 | if (ret < 0) |
47 | return ret; | |
48 | ||
49 | /* set the codec system clock */ | |
50 | ret = snd_soc_dai_set_sysclk(codec_dai, 0, S6105_CAM_CODEC_CLOCK, | |
51 | SND_SOC_CLOCK_OUT); | |
52 | if (ret < 0) | |
53 | return ret; | |
54 | ||
55 | return 0; | |
56 | } | |
57 | ||
58 | static struct snd_soc_ops s6105_ops = { | |
59 | .hw_params = s6105_hw_params, | |
60 | }; | |
61 | ||
62 | /* s6105 machine dapm widgets */ | |
63 | static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = { | |
64 | SND_SOC_DAPM_LINE("Audio Out Differential", NULL), | |
65 | SND_SOC_DAPM_LINE("Audio Out Stereo", NULL), | |
66 | SND_SOC_DAPM_LINE("Audio In", NULL), | |
67 | }; | |
68 | ||
69 | /* s6105 machine audio_mapnections to the codec pins */ | |
70 | static const struct snd_soc_dapm_route audio_map[] = { | |
71 | /* Audio Out connected to HPLOUT, HPLCOM, HPROUT */ | |
72 | {"Audio Out Differential", NULL, "HPLOUT"}, | |
73 | {"Audio Out Differential", NULL, "HPLCOM"}, | |
74 | {"Audio Out Stereo", NULL, "HPLOUT"}, | |
75 | {"Audio Out Stereo", NULL, "HPROUT"}, | |
76 | ||
77 | /* Audio In connected to LINE1L, LINE1R */ | |
78 | {"LINE1L", NULL, "Audio In"}, | |
79 | {"LINE1R", NULL, "Audio In"}, | |
80 | }; | |
81 | ||
82 | static int output_type_info(struct snd_kcontrol *kcontrol, | |
83 | struct snd_ctl_elem_info *uinfo) | |
84 | { | |
85 | uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; | |
86 | uinfo->count = 1; | |
87 | uinfo->value.enumerated.items = 2; | |
88 | if (uinfo->value.enumerated.item) { | |
89 | uinfo->value.enumerated.item = 1; | |
90 | strcpy(uinfo->value.enumerated.name, "HPLOUT/HPROUT"); | |
91 | } else { | |
92 | strcpy(uinfo->value.enumerated.name, "HPLOUT/HPLCOM"); | |
93 | } | |
94 | return 0; | |
95 | } | |
96 | ||
97 | static int output_type_get(struct snd_kcontrol *kcontrol, | |
98 | struct snd_ctl_elem_value *ucontrol) | |
99 | { | |
100 | ucontrol->value.enumerated.item[0] = kcontrol->private_value; | |
101 | return 0; | |
102 | } | |
103 | ||
104 | static int output_type_put(struct snd_kcontrol *kcontrol, | |
105 | struct snd_ctl_elem_value *ucontrol) | |
106 | { | |
107 | struct snd_soc_codec *codec = kcontrol->private_data; | |
ce6120cc | 108 | struct snd_soc_dapm_context *dapm = &codec->dapm; |
2b7dbbe0 DG |
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; | |
ce6120cc LG |
116 | snd_soc_dapm_disable_pin(dapm, val ? differential : stereo); |
117 | snd_soc_dapm_sync(dapm); | |
118 | snd_soc_dapm_enable_pin(dapm, val ? stereo : differential); | |
119 | snd_soc_dapm_sync(dapm); | |
2b7dbbe0 DG |
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 */ | |
f0fba2ad | 136 | static int s6105_aic3x_init(struct snd_soc_pcm_runtime *rtd) |
2b7dbbe0 | 137 | { |
f0fba2ad | 138 | struct snd_soc_codec *codec = rtd->codec; |
ce6120cc | 139 | struct snd_soc_dapm_context *dapm = &codec->dapm; |
f0fba2ad | 140 | |
2b7dbbe0 | 141 | /* Add s6105 specific widgets */ |
ce6120cc | 142 | snd_soc_dapm_new_controls(dapm, aic3x_dapm_widgets, |
2b7dbbe0 DG |
143 | ARRAY_SIZE(aic3x_dapm_widgets)); |
144 | ||
145 | /* Set up s6105 specific audio path audio_map */ | |
ce6120cc | 146 | snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map)); |
2b7dbbe0 DG |
147 | |
148 | /* not present */ | |
ce6120cc LG |
149 | snd_soc_dapm_nc_pin(dapm, "MONO_LOUT"); |
150 | snd_soc_dapm_nc_pin(dapm, "LINE2L"); | |
151 | snd_soc_dapm_nc_pin(dapm, "LINE2R"); | |
2b7dbbe0 DG |
152 | |
153 | /* not connected */ | |
ce6120cc LG |
154 | snd_soc_dapm_nc_pin(dapm, "MIC3L"); /* LINE2L on this chip */ |
155 | snd_soc_dapm_nc_pin(dapm, "MIC3R"); /* LINE2R on this chip */ | |
156 | snd_soc_dapm_nc_pin(dapm, "LLOUT"); | |
157 | snd_soc_dapm_nc_pin(dapm, "RLOUT"); | |
158 | snd_soc_dapm_nc_pin(dapm, "HPRCOM"); | |
2b7dbbe0 DG |
159 | |
160 | /* always connected */ | |
ce6120cc | 161 | snd_soc_dapm_enable_pin(dapm, "Audio In"); |
2b7dbbe0 DG |
162 | |
163 | /* must correspond to audio_out_mux.private_value initializer */ | |
ce6120cc LG |
164 | snd_soc_dapm_disable_pin(dapm, "Audio Out Differential"); |
165 | snd_soc_dapm_sync(dapm); | |
166 | snd_soc_dapm_enable_pin(dapm, "Audio Out Stereo"); | |
2b7dbbe0 | 167 | |
ce6120cc | 168 | snd_soc_dapm_sync(dapm); |
2b7dbbe0 | 169 | |
b76fb39d | 170 | snd_ctl_add(codec->card->snd_card, snd_ctl_new1(&audio_out_mux, codec)); |
2b7dbbe0 DG |
171 | |
172 | return 0; | |
173 | } | |
174 | ||
175 | /* s6105 digital audio interface glue - connects codec <--> CPU */ | |
176 | static struct snd_soc_dai_link s6105_dai = { | |
177 | .name = "TLV320AIC31", | |
178 | .stream_name = "AIC31", | |
f0fba2ad LG |
179 | .cpu_dai_name = "s6000-i2s", |
180 | .codec_dai_name = "tlv320aic3x-hifi", | |
181 | .platform_name = "s6000-pcm-audio", | |
182 | .codec_name = "tlv320aic3x-codec.0-001a", | |
2b7dbbe0 DG |
183 | .init = s6105_aic3x_init, |
184 | .ops = &s6105_ops, | |
185 | }; | |
186 | ||
187 | /* s6105 audio machine driver */ | |
188 | static struct snd_soc_card snd_soc_card_s6105 = { | |
189 | .name = "Stretch IP Camera", | |
2b7dbbe0 DG |
190 | .dai_link = &s6105_dai, |
191 | .num_links = 1, | |
192 | }; | |
193 | ||
2b7dbbe0 DG |
194 | static struct s6000_snd_platform_data __initdata s6105_snd_data = { |
195 | .wide = 0, | |
196 | .channel_in = 0, | |
197 | .channel_out = 1, | |
198 | .lines_in = 1, | |
199 | .lines_out = 1, | |
200 | .same_rate = 1, | |
201 | }; | |
202 | ||
203 | static struct platform_device *s6105_snd_device; | |
204 | ||
aa6b904e BD |
205 | /* temporary i2c device creation until this can be moved into the machine |
206 | * support file. | |
207 | */ | |
208 | static struct i2c_board_info i2c_device[] = { | |
209 | { I2C_BOARD_INFO("tlv320aic33", 0x18), } | |
210 | }; | |
211 | ||
2b7dbbe0 DG |
212 | static int __init s6105_init(void) |
213 | { | |
214 | int ret; | |
215 | ||
aa6b904e BD |
216 | i2c_register_board_info(0, i2c_device, ARRAY_SIZE(i2c_device)); |
217 | ||
2b7dbbe0 DG |
218 | s6105_snd_device = platform_device_alloc("soc-audio", -1); |
219 | if (!s6105_snd_device) | |
220 | return -ENOMEM; | |
221 | ||
f0fba2ad | 222 | platform_set_drvdata(s6105_snd_device, &snd_soc_card_s6105); |
2b7dbbe0 DG |
223 | platform_device_add_data(s6105_snd_device, &s6105_snd_data, |
224 | sizeof(s6105_snd_data)); | |
225 | ||
226 | ret = platform_device_add(s6105_snd_device); | |
227 | if (ret) | |
228 | platform_device_put(s6105_snd_device); | |
229 | ||
230 | return ret; | |
231 | } | |
232 | ||
233 | static void __exit s6105_exit(void) | |
234 | { | |
235 | platform_device_unregister(s6105_snd_device); | |
236 | } | |
237 | ||
238 | module_init(s6105_init); | |
239 | module_exit(s6105_exit); | |
240 | ||
241 | MODULE_AUTHOR("Daniel Gloeckner"); | |
242 | MODULE_DESCRIPTION("Stretch s6105 IP camera ASoC driver"); | |
243 | MODULE_LICENSE("GPL"); |