ASoC: Decouple DAPM from CODECs
[linux-2.6.git] / sound / soc / omap / rx51.c
1 /*
2  * rx51.c  --  SoC audio for Nokia RX-51
3  *
4  * Copyright (C) 2008 - 2009 Nokia Corporation
5  *
6  * Contact: Peter Ujfalusi <peter.ujfalusi@nokia.com>
7  *          Eduardo Valentin <eduardo.valentin@nokia.com>
8  *          Jarkko Nikula <jhnikula@gmail.com>
9  *
10  * This program is free software; you can redistribute it and/or
11  * modify it under the terms of the GNU General Public License
12  * version 2 as published by the Free Software Foundation.
13  *
14  * This program is distributed in the hope that it will be useful, but
15  * WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17  * General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License
20  * along with this program; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
22  * 02110-1301 USA
23  *
24  */
25
26 #include <linux/delay.h>
27 #include <linux/gpio.h>
28 #include <linux/platform_device.h>
29 #include <sound/core.h>
30 #include <sound/jack.h>
31 #include <sound/pcm.h>
32 #include <sound/soc.h>
33 #include <sound/soc-dapm.h>
34 #include <plat/mcbsp.h>
35
36 #include <asm/mach-types.h>
37
38 #include "omap-mcbsp.h"
39 #include "omap-pcm.h"
40 #include "../codecs/tlv320aic3x.h"
41
42 #define RX51_TVOUT_SEL_GPIO             40
43 #define RX51_JACK_DETECT_GPIO           177
44 /*
45  * REVISIT: TWL4030 GPIO base in RX-51. Now statically defined to 192. This
46  * gpio is reserved in arch/arm/mach-omap2/board-rx51-peripherals.c
47  */
48 #define RX51_SPEAKER_AMP_TWL_GPIO       (192 + 7)
49
50 enum {
51         RX51_JACK_DISABLED,
52         RX51_JACK_TVOUT,                /* tv-out */
53 };
54
55 static int rx51_spk_func;
56 static int rx51_dmic_func;
57 static int rx51_jack_func;
58
59 static void rx51_ext_control(struct snd_soc_codec *codec)
60 {
61         struct snd_soc_dapm_context *dapm = &codec->dapm;
62
63         if (rx51_spk_func)
64                 snd_soc_dapm_enable_pin(dapm, "Ext Spk");
65         else
66                 snd_soc_dapm_disable_pin(dapm, "Ext Spk");
67         if (rx51_dmic_func)
68                 snd_soc_dapm_enable_pin(dapm, "DMic");
69         else
70                 snd_soc_dapm_disable_pin(dapm, "DMic");
71
72         gpio_set_value(RX51_TVOUT_SEL_GPIO,
73                        rx51_jack_func == RX51_JACK_TVOUT);
74
75         snd_soc_dapm_sync(dapm);
76 }
77
78 static int rx51_startup(struct snd_pcm_substream *substream)
79 {
80         struct snd_pcm_runtime *runtime = substream->runtime;
81         struct snd_soc_pcm_runtime *rtd = substream->private_data;
82         struct snd_soc_codec *codec = rtd->codec;
83
84         snd_pcm_hw_constraint_minmax(runtime,
85                                      SNDRV_PCM_HW_PARAM_CHANNELS, 2, 2);
86         rx51_ext_control(codec);
87
88         return 0;
89 }
90
91 static int rx51_hw_params(struct snd_pcm_substream *substream,
92         struct snd_pcm_hw_params *params)
93 {
94         struct snd_soc_pcm_runtime *rtd = substream->private_data;
95         struct snd_soc_dai *codec_dai = rtd->codec_dai;
96         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
97         int err;
98
99         /* Set codec DAI configuration */
100         err = snd_soc_dai_set_fmt(codec_dai,
101                                   SND_SOC_DAIFMT_DSP_A |
102                                   SND_SOC_DAIFMT_IB_NF |
103                                   SND_SOC_DAIFMT_CBM_CFM);
104         if (err < 0)
105                 return err;
106
107         /* Set cpu DAI configuration */
108         err = snd_soc_dai_set_fmt(cpu_dai,
109                                   SND_SOC_DAIFMT_DSP_A |
110                                   SND_SOC_DAIFMT_IB_NF |
111                                   SND_SOC_DAIFMT_CBM_CFM);
112         if (err < 0)
113                 return err;
114
115         /* Set the codec system clock for DAC and ADC */
116         return snd_soc_dai_set_sysclk(codec_dai, 0, 19200000,
117                                       SND_SOC_CLOCK_IN);
118 }
119
120 static struct snd_soc_ops rx51_ops = {
121         .startup = rx51_startup,
122         .hw_params = rx51_hw_params,
123 };
124
125 static int rx51_get_spk(struct snd_kcontrol *kcontrol,
126                         struct snd_ctl_elem_value *ucontrol)
127 {
128         ucontrol->value.integer.value[0] = rx51_spk_func;
129
130         return 0;
131 }
132
133 static int rx51_set_spk(struct snd_kcontrol *kcontrol,
134                         struct snd_ctl_elem_value *ucontrol)
135 {
136         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
137
138         if (rx51_spk_func == ucontrol->value.integer.value[0])
139                 return 0;
140
141         rx51_spk_func = ucontrol->value.integer.value[0];
142         rx51_ext_control(codec);
143
144         return 1;
145 }
146
147 static int rx51_spk_event(struct snd_soc_dapm_widget *w,
148                           struct snd_kcontrol *k, int event)
149 {
150         if (SND_SOC_DAPM_EVENT_ON(event))
151                 gpio_set_value_cansleep(RX51_SPEAKER_AMP_TWL_GPIO, 1);
152         else
153                 gpio_set_value_cansleep(RX51_SPEAKER_AMP_TWL_GPIO, 0);
154
155         return 0;
156 }
157
158 static int rx51_get_input(struct snd_kcontrol *kcontrol,
159                           struct snd_ctl_elem_value *ucontrol)
160 {
161         ucontrol->value.integer.value[0] = rx51_dmic_func;
162
163         return 0;
164 }
165
166 static int rx51_set_input(struct snd_kcontrol *kcontrol,
167                           struct snd_ctl_elem_value *ucontrol)
168 {
169         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
170
171         if (rx51_dmic_func == ucontrol->value.integer.value[0])
172                 return 0;
173
174         rx51_dmic_func = ucontrol->value.integer.value[0];
175         rx51_ext_control(codec);
176
177         return 1;
178 }
179
180 static int rx51_get_jack(struct snd_kcontrol *kcontrol,
181                          struct snd_ctl_elem_value *ucontrol)
182 {
183         ucontrol->value.integer.value[0] = rx51_jack_func;
184
185         return 0;
186 }
187
188 static int rx51_set_jack(struct snd_kcontrol *kcontrol,
189                          struct snd_ctl_elem_value *ucontrol)
190 {
191         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
192
193         if (rx51_jack_func == ucontrol->value.integer.value[0])
194                 return 0;
195
196         rx51_jack_func = ucontrol->value.integer.value[0];
197         rx51_ext_control(codec);
198
199         return 1;
200 }
201
202 static struct snd_soc_jack rx51_av_jack;
203
204 static struct snd_soc_jack_gpio rx51_av_jack_gpios[] = {
205         {
206                 .gpio = RX51_JACK_DETECT_GPIO,
207                 .name = "avdet-gpio",
208                 .report = SND_JACK_VIDEOOUT,
209                 .invert = 1,
210                 .debounce_time = 200,
211         },
212 };
213
214 static const struct snd_soc_dapm_widget aic34_dapm_widgets[] = {
215         SND_SOC_DAPM_SPK("Ext Spk", rx51_spk_event),
216         SND_SOC_DAPM_MIC("DMic", NULL),
217 };
218
219 static const struct snd_soc_dapm_route audio_map[] = {
220         {"Ext Spk", NULL, "HPLOUT"},
221         {"Ext Spk", NULL, "HPROUT"},
222
223         {"DMic Rate 64", NULL, "Mic Bias 2V"},
224         {"Mic Bias 2V", NULL, "DMic"},
225 };
226
227 static const char *spk_function[] = {"Off", "On"};
228 static const char *input_function[] = {"ADC", "Digital Mic"};
229 static const char *jack_function[] = {"Off", "TV-OUT"};
230
231 static const struct soc_enum rx51_enum[] = {
232         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
233         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
234         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
235 };
236
237 static const struct snd_kcontrol_new aic34_rx51_controls[] = {
238         SOC_ENUM_EXT("Speaker Function", rx51_enum[0],
239                      rx51_get_spk, rx51_set_spk),
240         SOC_ENUM_EXT("Input Select",  rx51_enum[1],
241                      rx51_get_input, rx51_set_input),
242         SOC_ENUM_EXT("Jack Function", rx51_enum[2],
243                      rx51_get_jack, rx51_set_jack),
244 };
245
246 static int rx51_aic34_init(struct snd_soc_pcm_runtime *rtd)
247 {
248         struct snd_soc_codec *codec = rtd->codec;
249         struct snd_soc_dapm_context *dapm = &codec->dapm;
250         int err;
251
252         /* Set up NC codec pins */
253         snd_soc_dapm_nc_pin(dapm, "MIC3L");
254         snd_soc_dapm_nc_pin(dapm, "MIC3R");
255         snd_soc_dapm_nc_pin(dapm, "LINE1R");
256
257         /* Add RX-51 specific controls */
258         err = snd_soc_add_controls(codec, aic34_rx51_controls,
259                                    ARRAY_SIZE(aic34_rx51_controls));
260         if (err < 0)
261                 return err;
262
263         /* Add RX-51 specific widgets */
264         snd_soc_dapm_new_controls(dapm, aic34_dapm_widgets,
265                                   ARRAY_SIZE(aic34_dapm_widgets));
266
267         /* Set up RX-51 specific audio path audio_map */
268         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
269
270         snd_soc_dapm_sync(dapm);
271
272         /* AV jack detection */
273         err = snd_soc_jack_new(codec, "AV Jack",
274                                SND_JACK_VIDEOOUT, &rx51_av_jack);
275         if (err)
276                 return err;
277         err = snd_soc_jack_add_gpios(&rx51_av_jack,
278                                      ARRAY_SIZE(rx51_av_jack_gpios),
279                                      rx51_av_jack_gpios);
280
281         return err;
282 }
283
284 /* Digital audio interface glue - connects codec <--> CPU */
285 static struct snd_soc_dai_link rx51_dai[] = {
286         {
287                 .name = "TLV320AIC34",
288                 .stream_name = "AIC34",
289                 .cpu_dai_name = "omap-mcbsp-dai.1",
290                 .codec_dai_name = "tlv320aic3x-hifi",
291                 .platform_name = "omap-pcm-audio",
292                 .codec_name = "tlv320aic3x-codec.2-0018",
293                 .init = rx51_aic34_init,
294                 .ops = &rx51_ops,
295         },
296 };
297
298 /* Audio card */
299 static struct snd_soc_card rx51_sound_card = {
300         .name = "RX-51",
301         .dai_link = rx51_dai,
302         .num_links = ARRAY_SIZE(rx51_dai),
303 };
304
305 static struct platform_device *rx51_snd_device;
306
307 static int __init rx51_soc_init(void)
308 {
309         int err;
310
311         if (!machine_is_nokia_rx51())
312                 return -ENODEV;
313
314         err = gpio_request(RX51_TVOUT_SEL_GPIO, "tvout_sel");
315         if (err)
316                 goto err_gpio_tvout_sel;
317         gpio_direction_output(RX51_TVOUT_SEL_GPIO, 0);
318
319         rx51_snd_device = platform_device_alloc("soc-audio", -1);
320         if (!rx51_snd_device) {
321                 err = -ENOMEM;
322                 goto err1;
323         }
324
325         platform_set_drvdata(rx51_snd_device, &rx51_sound_card);
326
327         err = platform_device_add(rx51_snd_device);
328         if (err)
329                 goto err2;
330
331         return 0;
332 err2:
333         platform_device_put(rx51_snd_device);
334 err1:
335         gpio_free(RX51_TVOUT_SEL_GPIO);
336 err_gpio_tvout_sel:
337
338         return err;
339 }
340
341 static void __exit rx51_soc_exit(void)
342 {
343         snd_soc_jack_free_gpios(&rx51_av_jack, ARRAY_SIZE(rx51_av_jack_gpios),
344                                 rx51_av_jack_gpios);
345
346         platform_device_unregister(rx51_snd_device);
347         gpio_free(RX51_TVOUT_SEL_GPIO);
348 }
349
350 module_init(rx51_soc_init);
351 module_exit(rx51_soc_exit);
352
353 MODULE_AUTHOR("Nokia Corporation");
354 MODULE_DESCRIPTION("ALSA SoC Nokia RX-51");
355 MODULE_LICENSE("GPL");