ASoC: omap: rx51: Enable McBSP2 sidetone
[linux-2.6.git] / sound / soc / omap / sdp4430.c
1 /*
2  * sdp4430.c  --  SoC audio for TI OMAP4430 SDP
3  *
4  * Author: Misael Lopez Cruz <x0052729@ti.com>
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License
8  * version 2 as published by the Free Software Foundation.
9  *
10  * This program is distributed in the hope that it will be useful, but
11  * WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  * General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
18  * 02110-1301 USA
19  *
20  */
21
22 #include <linux/clk.h>
23 #include <linux/platform_device.h>
24 #include <sound/core.h>
25 #include <sound/pcm.h>
26 #include <sound/soc.h>
27 #include <sound/jack.h>
28
29 #include <asm/mach-types.h>
30 #include <plat/hardware.h>
31 #include <plat/mux.h>
32
33 #include "mcpdm.h"
34 #include "omap-pcm.h"
35 #include "../codecs/twl6040.h"
36
37 static int twl6040_power_mode;
38
39 static int sdp4430_hw_params(struct snd_pcm_substream *substream,
40         struct snd_pcm_hw_params *params)
41 {
42         struct snd_soc_pcm_runtime *rtd = substream->private_data;
43         struct snd_soc_dai *codec_dai = rtd->codec_dai;
44         int clk_id, freq;
45         int ret;
46
47         if (twl6040_power_mode) {
48                 clk_id = TWL6040_SYSCLK_SEL_HPPLL;
49                 freq = 38400000;
50         } else {
51                 clk_id = TWL6040_SYSCLK_SEL_LPPLL;
52                 freq = 32768;
53         }
54
55         /* set the codec mclk */
56         ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, freq,
57                                 SND_SOC_CLOCK_IN);
58         if (ret) {
59                 printk(KERN_ERR "can't set codec system clock\n");
60                 return ret;
61         }
62         return ret;
63 }
64
65 static struct snd_soc_ops sdp4430_ops = {
66         .hw_params = sdp4430_hw_params,
67 };
68
69 /* Headset jack */
70 static struct snd_soc_jack hs_jack;
71
72 /*Headset jack detection DAPM pins */
73 static struct snd_soc_jack_pin hs_jack_pins[] = {
74         {
75                 .pin = "Headset Mic",
76                 .mask = SND_JACK_MICROPHONE,
77         },
78         {
79                 .pin = "Headset Stereophone",
80                 .mask = SND_JACK_HEADPHONE,
81         },
82 };
83
84 static int sdp4430_get_power_mode(struct snd_kcontrol *kcontrol,
85         struct snd_ctl_elem_value *ucontrol)
86 {
87         ucontrol->value.integer.value[0] = twl6040_power_mode;
88         return 0;
89 }
90
91 static int sdp4430_set_power_mode(struct snd_kcontrol *kcontrol,
92         struct snd_ctl_elem_value *ucontrol)
93 {
94         if (twl6040_power_mode == ucontrol->value.integer.value[0])
95                 return 0;
96
97         twl6040_power_mode = ucontrol->value.integer.value[0];
98
99         return 1;
100 }
101
102 static const char *power_texts[] = {"Low-Power", "High-Performance"};
103
104 static const struct soc_enum sdp4430_enum[] = {
105         SOC_ENUM_SINGLE_EXT(2, power_texts),
106 };
107
108 static const struct snd_kcontrol_new sdp4430_controls[] = {
109         SOC_ENUM_EXT("TWL6040 Power Mode", sdp4430_enum[0],
110                 sdp4430_get_power_mode, sdp4430_set_power_mode),
111 };
112
113 /* SDP4430 machine DAPM */
114 static const struct snd_soc_dapm_widget sdp4430_twl6040_dapm_widgets[] = {
115         SND_SOC_DAPM_MIC("Ext Mic", NULL),
116         SND_SOC_DAPM_SPK("Ext Spk", NULL),
117         SND_SOC_DAPM_MIC("Headset Mic", NULL),
118         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
119         SND_SOC_DAPM_SPK("Earphone Spk", NULL),
120         SND_SOC_DAPM_INPUT("Aux/FM Stereo In"),
121 };
122
123 static const struct snd_soc_dapm_route audio_map[] = {
124         /* External Mics: MAINMIC, SUBMIC with bias*/
125         {"MAINMIC", NULL, "Main Mic Bias"},
126         {"SUBMIC", NULL, "Main Mic Bias"},
127         {"Main Mic Bias", NULL, "Ext Mic"},
128
129         /* External Speakers: HFL, HFR */
130         {"Ext Spk", NULL, "HFL"},
131         {"Ext Spk", NULL, "HFR"},
132
133         /* Headset Mic: HSMIC with bias */
134         {"HSMIC", NULL, "Headset Mic Bias"},
135         {"Headset Mic Bias", NULL, "Headset Mic"},
136
137         /* Headset Stereophone (Headphone): HSOL, HSOR */
138         {"Headset Stereophone", NULL, "HSOL"},
139         {"Headset Stereophone", NULL, "HSOR"},
140
141         /* Earphone speaker */
142         {"Earphone Spk", NULL, "EP"},
143
144         /* Aux/FM Stereo In: AFML, AFMR */
145         {"AFML", NULL, "Aux/FM Stereo In"},
146         {"AFMR", NULL, "Aux/FM Stereo In"},
147 };
148
149 static int sdp4430_twl6040_init(struct snd_soc_pcm_runtime *rtd)
150 {
151         struct snd_soc_codec *codec = rtd->codec;
152         struct snd_soc_dapm_context *dapm = &codec->dapm;
153         int ret;
154
155         /* Add SDP4430 specific controls */
156         ret = snd_soc_add_controls(codec, sdp4430_controls,
157                                 ARRAY_SIZE(sdp4430_controls));
158         if (ret)
159                 return ret;
160
161         /* Add SDP4430 specific widgets */
162         ret = snd_soc_dapm_new_controls(dapm, sdp4430_twl6040_dapm_widgets,
163                                 ARRAY_SIZE(sdp4430_twl6040_dapm_widgets));
164         if (ret)
165                 return ret;
166
167         /* Set up SDP4430 specific audio path audio_map */
168         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
169
170         /* SDP4430 connected pins */
171         snd_soc_dapm_enable_pin(dapm, "Ext Mic");
172         snd_soc_dapm_enable_pin(dapm, "Ext Spk");
173         snd_soc_dapm_enable_pin(dapm, "AFML");
174         snd_soc_dapm_enable_pin(dapm, "AFMR");
175         snd_soc_dapm_enable_pin(dapm, "Headset Mic");
176         snd_soc_dapm_enable_pin(dapm, "Headset Stereophone");
177
178         ret = snd_soc_dapm_sync(dapm);
179         if (ret)
180                 return ret;
181
182         /* Headset jack detection */
183         ret = snd_soc_jack_new(codec, "Headset Jack",
184                                 SND_JACK_HEADSET, &hs_jack);
185         if (ret)
186                 return ret;
187
188         ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
189                                 hs_jack_pins);
190
191         if (machine_is_omap_4430sdp())
192                 twl6040_hs_jack_detect(codec, &hs_jack, SND_JACK_HEADSET);
193         else
194                 snd_soc_jack_report(&hs_jack, SND_JACK_HEADSET, SND_JACK_HEADSET);
195
196         return ret;
197 }
198
199 /* Digital audio interface glue - connects codec <--> CPU */
200 static struct snd_soc_dai_link sdp4430_dai = {
201         .name = "TWL6040",
202         .stream_name = "TWL6040",
203         .cpu_dai_name ="omap-mcpdm-dai",
204         .codec_dai_name = "twl6040-hifi",
205         .platform_name = "omap-pcm-audio",
206         .codec_name = "twl6040-codec",
207         .init = sdp4430_twl6040_init,
208         .ops = &sdp4430_ops,
209 };
210
211 /* Audio machine driver */
212 static struct snd_soc_card snd_soc_sdp4430 = {
213         .name = "SDP4430",
214         .dai_link = &sdp4430_dai,
215         .num_links = 1,
216 };
217
218 static struct platform_device *sdp4430_snd_device;
219
220 static int __init sdp4430_soc_init(void)
221 {
222         int ret;
223
224         if (!machine_is_omap_4430sdp())
225                 return -ENODEV;
226         printk(KERN_INFO "SDP4430 SoC init\n");
227
228         sdp4430_snd_device = platform_device_alloc("soc-audio", -1);
229         if (!sdp4430_snd_device) {
230                 printk(KERN_ERR "Platform device allocation failed\n");
231                 return -ENOMEM;
232         }
233
234         platform_set_drvdata(sdp4430_snd_device, &snd_soc_sdp4430);
235
236         ret = platform_device_add(sdp4430_snd_device);
237         if (ret)
238                 goto err;
239
240         /* Codec starts in HP mode */
241         twl6040_power_mode = 1;
242
243         return 0;
244
245 err:
246         printk(KERN_ERR "Unable to add platform device\n");
247         platform_device_put(sdp4430_snd_device);
248         return ret;
249 }
250 module_init(sdp4430_soc_init);
251
252 static void __exit sdp4430_soc_exit(void)
253 {
254         platform_device_unregister(sdp4430_snd_device);
255 }
256 module_exit(sdp4430_soc_exit);
257
258 MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
259 MODULE_DESCRIPTION("ALSA SoC SDP4430");
260 MODULE_LICENSE("GPL");
261