ASoC: Intel: Restore Baytrail ADSP streams only when ADSP was in reset
[cascardo/linux.git] / sound / soc / s6000 / s6105-ipcam.c
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 <linux/i2c.h>
18 #include <sound/core.h>
19 #include <sound/pcm.h>
20 #include <sound/soc.h>
21
22 #include <variant/dmac.h>
23
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;
33         struct snd_soc_dai *codec_dai = rtd->codec_dai;
34         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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 |
45                                            SND_SOC_DAIFMT_NB_NF);
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_card *card = kcontrol->private_data;
108         struct snd_soc_dapm_context *dapm = &card->dapm;
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(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);
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_pcm_runtime *rtd)
137 {
138         struct snd_soc_codec *codec = rtd->codec;
139         struct snd_soc_dapm_context *dapm = &codec->dapm;
140         struct snd_soc_card *card = rtd->card;
141
142         /* not present */
143         snd_soc_dapm_nc_pin(dapm, "MONO_LOUT");
144         snd_soc_dapm_nc_pin(dapm, "LINE2L");
145         snd_soc_dapm_nc_pin(dapm, "LINE2R");
146
147         /* not connected */
148         snd_soc_dapm_nc_pin(dapm, "MIC3L"); /* LINE2L on this chip */
149         snd_soc_dapm_nc_pin(dapm, "MIC3R"); /* LINE2R on this chip */
150         snd_soc_dapm_nc_pin(dapm, "LLOUT");
151         snd_soc_dapm_nc_pin(dapm, "RLOUT");
152         snd_soc_dapm_nc_pin(dapm, "HPRCOM");
153
154         /* must correspond to audio_out_mux.private_value initializer */
155         snd_soc_dapm_disable_pin(&card->dapm, "Audio Out Differential");
156
157         snd_ctl_add(card->snd_card, snd_ctl_new1(&audio_out_mux, card));
158
159         return 0;
160 }
161
162 /* s6105 digital audio interface glue - connects codec <--> CPU */
163 static struct snd_soc_dai_link s6105_dai = {
164         .name = "TLV320AIC31",
165         .stream_name = "AIC31",
166         .cpu_dai_name = "s6000-i2s",
167         .codec_dai_name = "tlv320aic3x-hifi",
168         .platform_name = "s6000-pcm-audio",
169         .codec_name = "tlv320aic3x-codec.0-001a",
170         .init = s6105_aic3x_init,
171         .ops = &s6105_ops,
172 };
173
174 /* s6105 audio machine driver */
175 static struct snd_soc_card snd_soc_card_s6105 = {
176         .name = "Stretch IP Camera",
177         .owner = THIS_MODULE,
178         .dai_link = &s6105_dai,
179         .num_links = 1,
180
181         .dapm_widgets = aic3x_dapm_widgets,
182         .num_dapm_widgets = ARRAY_SIZE(aic3x_dapm_widgets),
183         .dapm_routes = audio_map,
184         .num_dapm_routes = ARRAY_SIZE(audio_map),
185 };
186
187 static struct s6000_snd_platform_data s6105_snd_data __initdata = {
188         .wide           = 0,
189         .channel_in     = 0,
190         .channel_out    = 1,
191         .lines_in       = 1,
192         .lines_out      = 1,
193         .same_rate      = 1,
194 };
195
196 static struct platform_device *s6105_snd_device;
197
198 /* temporary i2c device creation until this can be moved into the machine
199  * support file.
200 */
201 static struct i2c_board_info i2c_device[] = {
202         { I2C_BOARD_INFO("tlv320aic33", 0x18), }
203 };
204
205 static int __init s6105_init(void)
206 {
207         int ret;
208
209         i2c_register_board_info(0, i2c_device, ARRAY_SIZE(i2c_device));
210
211         s6105_snd_device = platform_device_alloc("soc-audio", -1);
212         if (!s6105_snd_device)
213                 return -ENOMEM;
214
215         platform_set_drvdata(s6105_snd_device, &snd_soc_card_s6105);
216         platform_device_add_data(s6105_snd_device, &s6105_snd_data,
217                                  sizeof(s6105_snd_data));
218
219         ret = platform_device_add(s6105_snd_device);
220         if (ret)
221                 platform_device_put(s6105_snd_device);
222
223         return ret;
224 }
225
226 static void __exit s6105_exit(void)
227 {
228         platform_device_unregister(s6105_snd_device);
229 }
230
231 module_init(s6105_init);
232 module_exit(s6105_exit);
233
234 MODULE_AUTHOR("Daniel Gloeckner");
235 MODULE_DESCRIPTION("Stretch s6105 IP camera ASoC driver");
236 MODULE_LICENSE("GPL");