04b5723bf89b5b4f289a6339e97f661fbd9dbccf
[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         if (rx51_spk_func)
62                 snd_soc_dapm_enable_pin(codec, "Ext Spk");
63         else
64                 snd_soc_dapm_disable_pin(codec, "Ext Spk");
65         if (rx51_dmic_func)
66                 snd_soc_dapm_enable_pin(codec, "DMic");
67         else
68                 snd_soc_dapm_disable_pin(codec, "DMic");
69
70         gpio_set_value(RX51_TVOUT_SEL_GPIO,
71                        rx51_jack_func == RX51_JACK_TVOUT);
72
73         snd_soc_dapm_sync(codec);
74 }
75
76 static int rx51_startup(struct snd_pcm_substream *substream)
77 {
78         struct snd_pcm_runtime *runtime = substream->runtime;
79         struct snd_soc_pcm_runtime *rtd = substream->private_data;
80         struct snd_soc_codec *codec = rtd->codec;
81
82         snd_pcm_hw_constraint_minmax(runtime,
83                                      SNDRV_PCM_HW_PARAM_CHANNELS, 2, 2);
84         rx51_ext_control(codec);
85
86         return 0;
87 }
88
89 static int rx51_hw_params(struct snd_pcm_substream *substream,
90         struct snd_pcm_hw_params *params)
91 {
92         struct snd_soc_pcm_runtime *rtd = substream->private_data;
93         struct snd_soc_dai *codec_dai = rtd->codec_dai;
94         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
95         int err;
96
97         /* Set codec DAI configuration */
98         err = snd_soc_dai_set_fmt(codec_dai,
99                                   SND_SOC_DAIFMT_DSP_A |
100                                   SND_SOC_DAIFMT_IB_NF |
101                                   SND_SOC_DAIFMT_CBM_CFM);
102         if (err < 0)
103                 return err;
104
105         /* Set cpu DAI configuration */
106         err = snd_soc_dai_set_fmt(cpu_dai,
107                                   SND_SOC_DAIFMT_DSP_A |
108                                   SND_SOC_DAIFMT_IB_NF |
109                                   SND_SOC_DAIFMT_CBM_CFM);
110         if (err < 0)
111                 return err;
112
113         /* Set the codec system clock for DAC and ADC */
114         return snd_soc_dai_set_sysclk(codec_dai, 0, 19200000,
115                                       SND_SOC_CLOCK_IN);
116 }
117
118 static struct snd_soc_ops rx51_ops = {
119         .startup = rx51_startup,
120         .hw_params = rx51_hw_params,
121 };
122
123 static int rx51_get_spk(struct snd_kcontrol *kcontrol,
124                         struct snd_ctl_elem_value *ucontrol)
125 {
126         ucontrol->value.integer.value[0] = rx51_spk_func;
127
128         return 0;
129 }
130
131 static int rx51_set_spk(struct snd_kcontrol *kcontrol,
132                         struct snd_ctl_elem_value *ucontrol)
133 {
134         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
135
136         if (rx51_spk_func == ucontrol->value.integer.value[0])
137                 return 0;
138
139         rx51_spk_func = ucontrol->value.integer.value[0];
140         rx51_ext_control(codec);
141
142         return 1;
143 }
144
145 static int rx51_spk_event(struct snd_soc_dapm_widget *w,
146                           struct snd_kcontrol *k, int event)
147 {
148         if (SND_SOC_DAPM_EVENT_ON(event))
149                 gpio_set_value_cansleep(RX51_SPEAKER_AMP_TWL_GPIO, 1);
150         else
151                 gpio_set_value_cansleep(RX51_SPEAKER_AMP_TWL_GPIO, 0);
152
153         return 0;
154 }
155
156 static int rx51_get_input(struct snd_kcontrol *kcontrol,
157                           struct snd_ctl_elem_value *ucontrol)
158 {
159         ucontrol->value.integer.value[0] = rx51_dmic_func;
160
161         return 0;
162 }
163
164 static int rx51_set_input(struct snd_kcontrol *kcontrol,
165                           struct snd_ctl_elem_value *ucontrol)
166 {
167         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
168
169         if (rx51_dmic_func == ucontrol->value.integer.value[0])
170                 return 0;
171
172         rx51_dmic_func = ucontrol->value.integer.value[0];
173         rx51_ext_control(codec);
174
175         return 1;
176 }
177
178 static int rx51_get_jack(struct snd_kcontrol *kcontrol,
179                          struct snd_ctl_elem_value *ucontrol)
180 {
181         ucontrol->value.integer.value[0] = rx51_jack_func;
182
183         return 0;
184 }
185
186 static int rx51_set_jack(struct snd_kcontrol *kcontrol,
187                          struct snd_ctl_elem_value *ucontrol)
188 {
189         struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
190
191         if (rx51_jack_func == ucontrol->value.integer.value[0])
192                 return 0;
193
194         rx51_jack_func = ucontrol->value.integer.value[0];
195         rx51_ext_control(codec);
196
197         return 1;
198 }
199
200 static struct snd_soc_jack rx51_av_jack;
201
202 static struct snd_soc_jack_gpio rx51_av_jack_gpios[] = {
203         {
204                 .gpio = RX51_JACK_DETECT_GPIO,
205                 .name = "avdet-gpio",
206                 .report = SND_JACK_VIDEOOUT,
207                 .invert = 1,
208                 .debounce_time = 200,
209         },
210 };
211
212 static const struct snd_soc_dapm_widget aic34_dapm_widgets[] = {
213         SND_SOC_DAPM_SPK("Ext Spk", rx51_spk_event),
214         SND_SOC_DAPM_MIC("DMic", NULL),
215 };
216
217 static const struct snd_soc_dapm_route audio_map[] = {
218         {"Ext Spk", NULL, "HPLOUT"},
219         {"Ext Spk", NULL, "HPROUT"},
220
221         {"DMic Rate 64", NULL, "Mic Bias 2V"},
222         {"Mic Bias 2V", NULL, "DMic"},
223 };
224
225 static const char *spk_function[] = {"Off", "On"};
226 static const char *input_function[] = {"ADC", "Digital Mic"};
227 static const char *jack_function[] = {"Off", "TV-OUT"};
228
229 static const struct soc_enum rx51_enum[] = {
230         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
231         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
232         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
233 };
234
235 static const struct snd_kcontrol_new aic34_rx51_controls[] = {
236         SOC_ENUM_EXT("Speaker Function", rx51_enum[0],
237                      rx51_get_spk, rx51_set_spk),
238         SOC_ENUM_EXT("Input Select",  rx51_enum[1],
239                      rx51_get_input, rx51_set_input),
240         SOC_ENUM_EXT("Jack Function", rx51_enum[2],
241                      rx51_get_jack, rx51_set_jack),
242 };
243
244 static int rx51_aic34_init(struct snd_soc_pcm_runtime *rtd)
245 {
246         struct snd_soc_codec *codec = rtd->codec;
247         int err;
248
249         /* Set up NC codec pins */
250         snd_soc_dapm_nc_pin(codec, "MIC3L");
251         snd_soc_dapm_nc_pin(codec, "MIC3R");
252         snd_soc_dapm_nc_pin(codec, "LINE1R");
253
254         /* Add RX-51 specific controls */
255         err = snd_soc_add_controls(codec, aic34_rx51_controls,
256                                    ARRAY_SIZE(aic34_rx51_controls));
257         if (err < 0)
258                 return err;
259
260         /* Add RX-51 specific widgets */
261         snd_soc_dapm_new_controls(codec, aic34_dapm_widgets,
262                                   ARRAY_SIZE(aic34_dapm_widgets));
263
264         /* Set up RX-51 specific audio path audio_map */
265         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
266
267         snd_soc_dapm_sync(codec);
268
269         /* AV jack detection */
270         err = snd_soc_jack_new(codec, "AV Jack",
271                                SND_JACK_VIDEOOUT, &rx51_av_jack);
272         if (err)
273                 return err;
274         err = snd_soc_jack_add_gpios(&rx51_av_jack,
275                                      ARRAY_SIZE(rx51_av_jack_gpios),
276                                      rx51_av_jack_gpios);
277
278         return err;
279 }
280
281 /* Digital audio interface glue - connects codec <--> CPU */
282 static struct snd_soc_dai_link rx51_dai[] = {
283         {
284                 .name = "TLV320AIC34",
285                 .stream_name = "AIC34",
286                 .cpu_dai_name = "omap-mcbsp-dai.1",
287                 .codec_dai_name = "tlv320aic3x-hifi",
288                 .platform_name = "omap-pcm-audio",
289                 .codec_name = "tlv320aic3x-codec.2-0018",
290                 .init = rx51_aic34_init,
291                 .ops = &rx51_ops,
292         },
293 };
294
295 /* Audio card */
296 static struct snd_soc_card rx51_sound_card = {
297         .name = "RX-51",
298         .dai_link = rx51_dai,
299         .num_links = ARRAY_SIZE(rx51_dai),
300 };
301
302 static struct platform_device *rx51_snd_device;
303
304 static int __init rx51_soc_init(void)
305 {
306         int err;
307
308         if (!machine_is_nokia_rx51())
309                 return -ENODEV;
310
311         err = gpio_request(RX51_TVOUT_SEL_GPIO, "tvout_sel");
312         if (err)
313                 goto err_gpio_tvout_sel;
314         gpio_direction_output(RX51_TVOUT_SEL_GPIO, 0);
315
316         rx51_snd_device = platform_device_alloc("soc-audio", -1);
317         if (!rx51_snd_device) {
318                 err = -ENOMEM;
319                 goto err1;
320         }
321
322         platform_set_drvdata(rx51_snd_device, &rx51_sound_card);
323
324         err = platform_device_add(rx51_snd_device);
325         if (err)
326                 goto err2;
327
328         return 0;
329 err2:
330         platform_device_put(rx51_snd_device);
331 err1:
332         gpio_free(RX51_TVOUT_SEL_GPIO);
333 err_gpio_tvout_sel:
334
335         return err;
336 }
337
338 static void __exit rx51_soc_exit(void)
339 {
340         snd_soc_jack_free_gpios(&rx51_av_jack, ARRAY_SIZE(rx51_av_jack_gpios),
341                                 rx51_av_jack_gpios);
342
343         platform_device_unregister(rx51_snd_device);
344         gpio_free(RX51_TVOUT_SEL_GPIO);
345 }
346
347 module_init(rx51_soc_init);
348 module_exit(rx51_soc_exit);
349
350 MODULE_AUTHOR("Nokia Corporation");
351 MODULE_DESCRIPTION("ALSA SoC Nokia RX-51");
352 MODULE_LICENSE("GPL");