Merge branch 'topic/msnd' into for-linus
[linux-2.6] / sound / soc / omap / sdp3430.c
1 /*
2  * sdp3430.c  --  SoC audio for TI OMAP3430 SDP
3  *
4  * Author: Misael Lopez Cruz <x0052729@ti.com>
5  *
6  * Based on:
7  * Author: Steve Sakoman <steve@sakoman.com>
8  *
9  * This program is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU General Public License
11  * version 2 as published by the Free Software Foundation.
12  *
13  * This program is distributed in the hope that it will be useful, but
14  * WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16  * General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
21  * 02110-1301 USA
22  *
23  */
24
25 #include <linux/clk.h>
26 #include <linux/platform_device.h>
27 #include <sound/core.h>
28 #include <sound/pcm.h>
29 #include <sound/soc.h>
30 #include <sound/soc-dapm.h>
31 #include <sound/jack.h>
32
33 #include <asm/mach-types.h>
34 #include <mach/hardware.h>
35 #include <mach/gpio.h>
36 #include <mach/mcbsp.h>
37
38 #include "omap-mcbsp.h"
39 #include "omap-pcm.h"
40 #include "../codecs/twl4030.h"
41
42 static struct snd_soc_card snd_soc_sdp3430;
43
44 static int sdp3430_hw_params(struct snd_pcm_substream *substream,
45         struct snd_pcm_hw_params *params)
46 {
47         struct snd_soc_pcm_runtime *rtd = substream->private_data;
48         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
49         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
50         int ret;
51
52         /* Set codec DAI configuration */
53         ret = snd_soc_dai_set_fmt(codec_dai,
54                                   SND_SOC_DAIFMT_I2S |
55                                   SND_SOC_DAIFMT_NB_NF |
56                                   SND_SOC_DAIFMT_CBM_CFM);
57         if (ret < 0) {
58                 printk(KERN_ERR "can't set codec DAI configuration\n");
59                 return ret;
60         }
61
62         /* Set cpu DAI configuration */
63         ret = snd_soc_dai_set_fmt(cpu_dai,
64                                   SND_SOC_DAIFMT_I2S |
65                                   SND_SOC_DAIFMT_NB_NF |
66                                   SND_SOC_DAIFMT_CBM_CFM);
67         if (ret < 0) {
68                 printk(KERN_ERR "can't set cpu DAI configuration\n");
69                 return ret;
70         }
71
72         /* Set the codec system clock for DAC and ADC */
73         ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
74                                             SND_SOC_CLOCK_IN);
75         if (ret < 0) {
76                 printk(KERN_ERR "can't set codec system clock\n");
77                 return ret;
78         }
79
80         return 0;
81 }
82
83 static struct snd_soc_ops sdp3430_ops = {
84         .hw_params = sdp3430_hw_params,
85 };
86
87 /* Headset jack */
88 static struct snd_soc_jack hs_jack;
89
90 /* Headset jack detection DAPM pins */
91 static struct snd_soc_jack_pin hs_jack_pins[] = {
92         {
93                 .pin = "Headset Mic",
94                 .mask = SND_JACK_MICROPHONE,
95         },
96         {
97                 .pin = "Headset Stereophone",
98                 .mask = SND_JACK_HEADPHONE,
99         },
100 };
101
102 /* Headset jack detection gpios */
103 static struct snd_soc_jack_gpio hs_jack_gpios[] = {
104         {
105                 .gpio = (OMAP_MAX_GPIO_LINES + 2),
106                 .name = "hsdet-gpio",
107                 .report = SND_JACK_HEADSET,
108                 .debounce_time = 200,
109         },
110 };
111
112 /* SDP3430 machine DAPM */
113 static const struct snd_soc_dapm_widget sdp3430_twl4030_dapm_widgets[] = {
114         SND_SOC_DAPM_MIC("Ext Mic", NULL),
115         SND_SOC_DAPM_SPK("Ext Spk", NULL),
116         SND_SOC_DAPM_MIC("Headset Mic", NULL),
117         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
118 };
119
120 static const struct snd_soc_dapm_route audio_map[] = {
121         /* External Mics: MAINMIC, SUBMIC with bias*/
122         {"MAINMIC", NULL, "Mic Bias 1"},
123         {"SUBMIC", NULL, "Mic Bias 2"},
124         {"Mic Bias 1", NULL, "Ext Mic"},
125         {"Mic Bias 2", NULL, "Ext Mic"},
126
127         /* External Speakers: HFL, HFR */
128         {"Ext Spk", NULL, "HFL"},
129         {"Ext Spk", NULL, "HFR"},
130
131         /* Headset Mic: HSMIC with bias */
132         {"HSMIC", NULL, "Headset Mic Bias"},
133         {"Headset Mic Bias", NULL, "Headset Mic"},
134
135         /* Headset Stereophone (Headphone): HSOL, HSOR */
136         {"Headset Stereophone", NULL, "HSOL"},
137         {"Headset Stereophone", NULL, "HSOR"},
138 };
139
140 static int sdp3430_twl4030_init(struct snd_soc_codec *codec)
141 {
142         int ret;
143
144         /* Add SDP3430 specific widgets */
145         ret = snd_soc_dapm_new_controls(codec, sdp3430_twl4030_dapm_widgets,
146                                 ARRAY_SIZE(sdp3430_twl4030_dapm_widgets));
147         if (ret)
148                 return ret;
149
150         /* Set up SDP3430 specific audio path audio_map */
151         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
152
153         /* SDP3430 connected pins */
154         snd_soc_dapm_enable_pin(codec, "Ext Mic");
155         snd_soc_dapm_enable_pin(codec, "Ext Spk");
156         snd_soc_dapm_disable_pin(codec, "Headset Mic");
157         snd_soc_dapm_disable_pin(codec, "Headset Stereophone");
158
159         /* TWL4030 not connected pins */
160         snd_soc_dapm_nc_pin(codec, "AUXL");
161         snd_soc_dapm_nc_pin(codec, "AUXR");
162         snd_soc_dapm_nc_pin(codec, "CARKITMIC");
163         snd_soc_dapm_nc_pin(codec, "DIGIMIC0");
164         snd_soc_dapm_nc_pin(codec, "DIGIMIC1");
165
166         snd_soc_dapm_nc_pin(codec, "OUTL");
167         snd_soc_dapm_nc_pin(codec, "OUTR");
168         snd_soc_dapm_nc_pin(codec, "EARPIECE");
169         snd_soc_dapm_nc_pin(codec, "PREDRIVEL");
170         snd_soc_dapm_nc_pin(codec, "PREDRIVER");
171         snd_soc_dapm_nc_pin(codec, "CARKITL");
172         snd_soc_dapm_nc_pin(codec, "CARKITR");
173
174         ret = snd_soc_dapm_sync(codec);
175         if (ret)
176                 return ret;
177
178         /* Headset jack detection */
179         ret = snd_soc_jack_new(&snd_soc_sdp3430, "Headset Jack",
180                                 SND_JACK_HEADSET, &hs_jack);
181         if (ret)
182                 return ret;
183
184         ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
185                                 hs_jack_pins);
186         if (ret)
187                 return ret;
188
189         ret = snd_soc_jack_add_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
190                                 hs_jack_gpios);
191
192         return ret;
193 }
194
195 /* Digital audio interface glue - connects codec <--> CPU */
196 static struct snd_soc_dai_link sdp3430_dai = {
197         .name = "TWL4030",
198         .stream_name = "TWL4030",
199         .cpu_dai = &omap_mcbsp_dai[0],
200         .codec_dai = &twl4030_dai,
201         .init = sdp3430_twl4030_init,
202         .ops = &sdp3430_ops,
203 };
204
205 /* Audio machine driver */
206 static struct snd_soc_card snd_soc_sdp3430 = {
207         .name = "SDP3430",
208         .platform = &omap_soc_platform,
209         .dai_link = &sdp3430_dai,
210         .num_links = 1,
211 };
212
213 /* Audio subsystem */
214 static struct snd_soc_device sdp3430_snd_devdata = {
215         .card = &snd_soc_sdp3430,
216         .codec_dev = &soc_codec_dev_twl4030,
217 };
218
219 static struct platform_device *sdp3430_snd_device;
220
221 static int __init sdp3430_soc_init(void)
222 {
223         int ret;
224
225         if (!machine_is_omap_3430sdp()) {
226                 pr_debug("Not SDP3430!\n");
227                 return -ENODEV;
228         }
229         printk(KERN_INFO "SDP3430 SoC init\n");
230
231         sdp3430_snd_device = platform_device_alloc("soc-audio", -1);
232         if (!sdp3430_snd_device) {
233                 printk(KERN_ERR "Platform device allocation failed\n");
234                 return -ENOMEM;
235         }
236
237         platform_set_drvdata(sdp3430_snd_device, &sdp3430_snd_devdata);
238         sdp3430_snd_devdata.dev = &sdp3430_snd_device->dev;
239         *(unsigned int *)sdp3430_dai.cpu_dai->private_data = 1; /* McBSP2 */
240
241         ret = platform_device_add(sdp3430_snd_device);
242         if (ret)
243                 goto err1;
244
245         return 0;
246
247 err1:
248         printk(KERN_ERR "Unable to add platform device\n");
249         platform_device_put(sdp3430_snd_device);
250
251         return ret;
252 }
253 module_init(sdp3430_soc_init);
254
255 static void __exit sdp3430_soc_exit(void)
256 {
257         snd_soc_jack_free_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
258                                 hs_jack_gpios);
259
260         platform_device_unregister(sdp3430_snd_device);
261 }
262 module_exit(sdp3430_soc_exit);
263
264 MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
265 MODULE_DESCRIPTION("ALSA SoC SDP3430");
266 MODULE_LICENSE("GPL");
267