ASoC: Decouple DAPM from CODECs
[linux-2.6.git] / 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 <linux/i2c/twl.h>
28 #include <sound/core.h>
29 #include <sound/pcm.h>
30 #include <sound/soc.h>
31 #include <sound/soc-dapm.h>
32 #include <sound/jack.h>
33
34 #include <asm/mach-types.h>
35 #include <mach/hardware.h>
36 #include <mach/gpio.h>
37 #include <plat/mcbsp.h>
38
39 /* Register descriptions for twl4030 codec part */
40 #include <linux/mfd/twl4030-codec.h>
41
42 #include "omap-mcbsp.h"
43 #include "omap-pcm.h"
44
45 /* TWL4030 PMBR1 Register */
46 #define TWL4030_INTBR_PMBR1             0x0D
47 /* TWL4030 PMBR1 Register GPIO6 mux bit */
48 #define TWL4030_GPIO6_PWM0_MUTE(value)  (value << 2)
49
50 static struct snd_soc_card snd_soc_sdp3430;
51
52 static int sdp3430_hw_params(struct snd_pcm_substream *substream,
53         struct snd_pcm_hw_params *params)
54 {
55         struct snd_soc_pcm_runtime *rtd = substream->private_data;
56         struct snd_soc_dai *codec_dai = rtd->codec_dai;
57         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
58         int ret;
59
60         /* Set codec DAI configuration */
61         ret = snd_soc_dai_set_fmt(codec_dai,
62                                   SND_SOC_DAIFMT_I2S |
63                                   SND_SOC_DAIFMT_NB_NF |
64                                   SND_SOC_DAIFMT_CBM_CFM);
65         if (ret < 0) {
66                 printk(KERN_ERR "can't set codec DAI configuration\n");
67                 return ret;
68         }
69
70         /* Set cpu DAI configuration */
71         ret = snd_soc_dai_set_fmt(cpu_dai,
72                                   SND_SOC_DAIFMT_I2S |
73                                   SND_SOC_DAIFMT_NB_NF |
74                                   SND_SOC_DAIFMT_CBM_CFM);
75         if (ret < 0) {
76                 printk(KERN_ERR "can't set cpu DAI configuration\n");
77                 return ret;
78         }
79
80         /* Set the codec system clock for DAC and ADC */
81         ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
82                                             SND_SOC_CLOCK_IN);
83         if (ret < 0) {
84                 printk(KERN_ERR "can't set codec system clock\n");
85                 return ret;
86         }
87
88         return 0;
89 }
90
91 static struct snd_soc_ops sdp3430_ops = {
92         .hw_params = sdp3430_hw_params,
93 };
94
95 static int sdp3430_hw_voice_params(struct snd_pcm_substream *substream,
96         struct snd_pcm_hw_params *params)
97 {
98         struct snd_soc_pcm_runtime *rtd = substream->private_data;
99         struct snd_soc_dai *codec_dai = rtd->codec_dai;
100         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
101         int ret;
102
103         /* Set codec DAI configuration */
104         ret = snd_soc_dai_set_fmt(codec_dai,
105                                 SND_SOC_DAIFMT_DSP_A |
106                                 SND_SOC_DAIFMT_IB_NF |
107                                 SND_SOC_DAIFMT_CBM_CFM);
108         if (ret) {
109                 printk(KERN_ERR "can't set codec DAI configuration\n");
110                 return ret;
111         }
112
113         /* Set cpu DAI configuration */
114         ret = snd_soc_dai_set_fmt(cpu_dai,
115                                 SND_SOC_DAIFMT_DSP_A |
116                                 SND_SOC_DAIFMT_IB_NF |
117                                 SND_SOC_DAIFMT_CBM_CFM);
118         if (ret < 0) {
119                 printk(KERN_ERR "can't set cpu DAI configuration\n");
120                 return ret;
121         }
122
123         /* Set the codec system clock for DAC and ADC */
124         ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
125                                             SND_SOC_CLOCK_IN);
126         if (ret < 0) {
127                 printk(KERN_ERR "can't set codec system clock\n");
128                 return ret;
129         }
130
131         return 0;
132 }
133
134 static struct snd_soc_ops sdp3430_voice_ops = {
135         .hw_params = sdp3430_hw_voice_params,
136 };
137
138 /* Headset jack */
139 static struct snd_soc_jack hs_jack;
140
141 /* Headset jack detection DAPM pins */
142 static struct snd_soc_jack_pin hs_jack_pins[] = {
143         {
144                 .pin = "Headset Mic",
145                 .mask = SND_JACK_MICROPHONE,
146         },
147         {
148                 .pin = "Headset Stereophone",
149                 .mask = SND_JACK_HEADPHONE,
150         },
151 };
152
153 /* Headset jack detection gpios */
154 static struct snd_soc_jack_gpio hs_jack_gpios[] = {
155         {
156                 .gpio = (OMAP_MAX_GPIO_LINES + 2),
157                 .name = "hsdet-gpio",
158                 .report = SND_JACK_HEADSET,
159                 .debounce_time = 200,
160         },
161 };
162
163 /* SDP3430 machine DAPM */
164 static const struct snd_soc_dapm_widget sdp3430_twl4030_dapm_widgets[] = {
165         SND_SOC_DAPM_MIC("Ext Mic", NULL),
166         SND_SOC_DAPM_SPK("Ext Spk", NULL),
167         SND_SOC_DAPM_MIC("Headset Mic", NULL),
168         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
169 };
170
171 static const struct snd_soc_dapm_route audio_map[] = {
172         /* External Mics: MAINMIC, SUBMIC with bias*/
173         {"MAINMIC", NULL, "Mic Bias 1"},
174         {"SUBMIC", NULL, "Mic Bias 2"},
175         {"Mic Bias 1", NULL, "Ext Mic"},
176         {"Mic Bias 2", NULL, "Ext Mic"},
177
178         /* External Speakers: HFL, HFR */
179         {"Ext Spk", NULL, "HFL"},
180         {"Ext Spk", NULL, "HFR"},
181
182         /* Headset Mic: HSMIC with bias */
183         {"HSMIC", NULL, "Headset Mic Bias"},
184         {"Headset Mic Bias", NULL, "Headset Mic"},
185
186         /* Headset Stereophone (Headphone): HSOL, HSOR */
187         {"Headset Stereophone", NULL, "HSOL"},
188         {"Headset Stereophone", NULL, "HSOR"},
189 };
190
191 static int sdp3430_twl4030_init(struct snd_soc_pcm_runtime *rtd)
192 {
193         struct snd_soc_codec *codec = rtd->codec;
194         struct snd_soc_dapm_context *dapm = &codec->dapm;
195         int ret;
196
197         /* Add SDP3430 specific widgets */
198         ret = snd_soc_dapm_new_controls(dapm, sdp3430_twl4030_dapm_widgets,
199                                 ARRAY_SIZE(sdp3430_twl4030_dapm_widgets));
200         if (ret)
201                 return ret;
202
203         /* Set up SDP3430 specific audio path audio_map */
204         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
205
206         /* SDP3430 connected pins */
207         snd_soc_dapm_enable_pin(dapm, "Ext Mic");
208         snd_soc_dapm_enable_pin(dapm, "Ext Spk");
209         snd_soc_dapm_disable_pin(dapm, "Headset Mic");
210         snd_soc_dapm_disable_pin(dapm, "Headset Stereophone");
211
212         /* TWL4030 not connected pins */
213         snd_soc_dapm_nc_pin(dapm, "AUXL");
214         snd_soc_dapm_nc_pin(dapm, "AUXR");
215         snd_soc_dapm_nc_pin(dapm, "CARKITMIC");
216         snd_soc_dapm_nc_pin(dapm, "DIGIMIC0");
217         snd_soc_dapm_nc_pin(dapm, "DIGIMIC1");
218
219         snd_soc_dapm_nc_pin(dapm, "OUTL");
220         snd_soc_dapm_nc_pin(dapm, "OUTR");
221         snd_soc_dapm_nc_pin(dapm, "EARPIECE");
222         snd_soc_dapm_nc_pin(dapm, "PREDRIVEL");
223         snd_soc_dapm_nc_pin(dapm, "PREDRIVER");
224         snd_soc_dapm_nc_pin(dapm, "CARKITL");
225         snd_soc_dapm_nc_pin(dapm, "CARKITR");
226
227         ret = snd_soc_dapm_sync(dapm);
228         if (ret)
229                 return ret;
230
231         /* Headset jack detection */
232         ret = snd_soc_jack_new(codec, "Headset Jack",
233                                 SND_JACK_HEADSET, &hs_jack);
234         if (ret)
235                 return ret;
236
237         ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
238                                 hs_jack_pins);
239         if (ret)
240                 return ret;
241
242         ret = snd_soc_jack_add_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
243                                 hs_jack_gpios);
244
245         return ret;
246 }
247
248 static int sdp3430_twl4030_voice_init(struct snd_soc_pcm_runtime *rtd)
249 {
250         struct snd_soc_codec *codec = rtd->codec;
251         unsigned short reg;
252
253         /* Enable voice interface */
254         reg = codec->driver->read(codec, TWL4030_REG_VOICE_IF);
255         reg |= TWL4030_VIF_DIN_EN | TWL4030_VIF_DOUT_EN | TWL4030_VIF_EN;
256         codec->driver->write(codec, TWL4030_REG_VOICE_IF, reg);
257
258         return 0;
259 }
260
261
262 /* Digital audio interface glue - connects codec <--> CPU */
263 static struct snd_soc_dai_link sdp3430_dai[] = {
264         {
265                 .name = "TWL4030 I2S",
266                 .stream_name = "TWL4030 Audio",
267                 .cpu_dai_name = "omap-mcbsp-dai.1",
268                 .codec_dai_name = "twl4030-hifi",
269                 .platform_name = "omap-pcm-audio",
270                 .codec_name = "twl4030-codec",
271                 .init = sdp3430_twl4030_init,
272                 .ops = &sdp3430_ops,
273         },
274         {
275                 .name = "TWL4030 PCM",
276                 .stream_name = "TWL4030 Voice",
277                 .cpu_dai_name = "omap-mcbsp-dai.2",
278                 .codec_dai_name = "twl4030-voice",
279                 .platform_name = "omap-pcm-audio",
280                 .codec_name = "twl4030-codec",
281                 .init = sdp3430_twl4030_voice_init,
282                 .ops = &sdp3430_voice_ops,
283         },
284 };
285
286 /* Audio machine driver */
287 static struct snd_soc_card snd_soc_sdp3430 = {
288         .name = "SDP3430",
289         .dai_link = sdp3430_dai,
290         .num_links = ARRAY_SIZE(sdp3430_dai),
291 };
292
293 static struct platform_device *sdp3430_snd_device;
294
295 static int __init sdp3430_soc_init(void)
296 {
297         int ret;
298         u8 pin_mux;
299
300         if (!machine_is_omap_3430sdp())
301                 return -ENODEV;
302         printk(KERN_INFO "SDP3430 SoC init\n");
303
304         sdp3430_snd_device = platform_device_alloc("soc-audio", -1);
305         if (!sdp3430_snd_device) {
306                 printk(KERN_ERR "Platform device allocation failed\n");
307                 return -ENOMEM;
308         }
309
310         platform_set_drvdata(sdp3430_snd_device, &snd_soc_sdp3430);
311
312         /* Set TWL4030 GPIO6 as EXTMUTE signal */
313         twl_i2c_read_u8(TWL4030_MODULE_INTBR, &pin_mux,
314                                                 TWL4030_INTBR_PMBR1);
315         pin_mux &= ~TWL4030_GPIO6_PWM0_MUTE(0x03);
316         pin_mux |= TWL4030_GPIO6_PWM0_MUTE(0x02);
317         twl_i2c_write_u8(TWL4030_MODULE_INTBR, pin_mux,
318                                                 TWL4030_INTBR_PMBR1);
319
320         ret = platform_device_add(sdp3430_snd_device);
321         if (ret)
322                 goto err1;
323
324         return 0;
325
326 err1:
327         printk(KERN_ERR "Unable to add platform device\n");
328         platform_device_put(sdp3430_snd_device);
329
330         return ret;
331 }
332 module_init(sdp3430_soc_init);
333
334 static void __exit sdp3430_soc_exit(void)
335 {
336         snd_soc_jack_free_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
337                                 hs_jack_gpios);
338
339         platform_device_unregister(sdp3430_snd_device);
340 }
341 module_exit(sdp3430_soc_exit);
342
343 MODULE_AUTHOR("Misael Lopez Cruz <x0052729@ti.com>");
344 MODULE_DESCRIPTION("ALSA SoC SDP3430");
345 MODULE_LICENSE("GPL");
346