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TOMOYO Linux Cross Reference
Linux/sound/soc/omap/rx51.c

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  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@ti.com>
  7  *          Eduardo Valentin <eduardo.valentin@nokia.com>
  8  *          Jarkko Nikula <jarkko.nikula@bitmer.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 <linux/module.h>
 30 #include <sound/core.h>
 31 #include <sound/jack.h>
 32 #include <sound/pcm.h>
 33 #include <sound/soc.h>
 34 #include <linux/platform_data/asoc-ti-mcbsp.h>
 35 #include "../codecs/tpa6130a2.h"
 36 
 37 #include <asm/mach-types.h>
 38 
 39 #include "omap-mcbsp.h"
 40 #include "omap-pcm.h"
 41 
 42 #define RX51_TVOUT_SEL_GPIO             40
 43 #define RX51_JACK_DETECT_GPIO           177
 44 #define RX51_ECI_SW_GPIO                182
 45 /*
 46  * REVISIT: TWL4030 GPIO base in RX-51. Now statically defined to 192. This
 47  * gpio is reserved in arch/arm/mach-omap2/board-rx51-peripherals.c
 48  */
 49 #define RX51_SPEAKER_AMP_TWL_GPIO       (192 + 7)
 50 
 51 enum {
 52         RX51_JACK_DISABLED,
 53         RX51_JACK_TVOUT,                /* tv-out with stereo output */
 54         RX51_JACK_HP,                   /* headphone: stereo output, no mic */
 55         RX51_JACK_HS,                   /* headset: stereo output with mic */
 56 };
 57 
 58 static int rx51_spk_func;
 59 static int rx51_dmic_func;
 60 static int rx51_jack_func;
 61 
 62 static void rx51_ext_control(struct snd_soc_dapm_context *dapm)
 63 {
 64         int hp = 0, hs = 0, tvout = 0;
 65 
 66         switch (rx51_jack_func) {
 67         case RX51_JACK_TVOUT:
 68                 tvout = 1;
 69                 hp = 1;
 70                 break;
 71         case RX51_JACK_HS:
 72                 hs = 1;
 73         case RX51_JACK_HP:
 74                 hp = 1;
 75                 break;
 76         }
 77 
 78         if (rx51_spk_func)
 79                 snd_soc_dapm_enable_pin(dapm, "Ext Spk");
 80         else
 81                 snd_soc_dapm_disable_pin(dapm, "Ext Spk");
 82         if (rx51_dmic_func)
 83                 snd_soc_dapm_enable_pin(dapm, "DMic");
 84         else
 85                 snd_soc_dapm_disable_pin(dapm, "DMic");
 86         if (hp)
 87                 snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
 88         else
 89                 snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
 90         if (hs)
 91                 snd_soc_dapm_enable_pin(dapm, "HS Mic");
 92         else
 93                 snd_soc_dapm_disable_pin(dapm, "HS Mic");
 94 
 95         gpio_set_value(RX51_TVOUT_SEL_GPIO, tvout);
 96 
 97         snd_soc_dapm_sync(dapm);
 98 }
 99 
100 static int rx51_startup(struct snd_pcm_substream *substream)
101 {
102         struct snd_pcm_runtime *runtime = substream->runtime;
103         struct snd_soc_pcm_runtime *rtd = substream->private_data;
104         struct snd_soc_card *card = rtd->card;
105 
106         snd_pcm_hw_constraint_minmax(runtime,
107                                      SNDRV_PCM_HW_PARAM_CHANNELS, 2, 2);
108         rx51_ext_control(&card->dapm);
109 
110         return 0;
111 }
112 
113 static int rx51_hw_params(struct snd_pcm_substream *substream,
114         struct snd_pcm_hw_params *params)
115 {
116         struct snd_soc_pcm_runtime *rtd = substream->private_data;
117         struct snd_soc_dai *codec_dai = rtd->codec_dai;
118 
119         /* Set the codec system clock for DAC and ADC */
120         return snd_soc_dai_set_sysclk(codec_dai, 0, 19200000,
121                                       SND_SOC_CLOCK_IN);
122 }
123 
124 static struct snd_soc_ops rx51_ops = {
125         .startup = rx51_startup,
126         .hw_params = rx51_hw_params,
127 };
128 
129 static int rx51_get_spk(struct snd_kcontrol *kcontrol,
130                         struct snd_ctl_elem_value *ucontrol)
131 {
132         ucontrol->value.integer.value[0] = rx51_spk_func;
133 
134         return 0;
135 }
136 
137 static int rx51_set_spk(struct snd_kcontrol *kcontrol,
138                         struct snd_ctl_elem_value *ucontrol)
139 {
140         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
141 
142         if (rx51_spk_func == ucontrol->value.integer.value[0])
143                 return 0;
144 
145         rx51_spk_func = ucontrol->value.integer.value[0];
146         rx51_ext_control(&card->dapm);
147 
148         return 1;
149 }
150 
151 static int rx51_spk_event(struct snd_soc_dapm_widget *w,
152                           struct snd_kcontrol *k, int event)
153 {
154         if (SND_SOC_DAPM_EVENT_ON(event))
155                 gpio_set_value_cansleep(RX51_SPEAKER_AMP_TWL_GPIO, 1);
156         else
157                 gpio_set_value_cansleep(RX51_SPEAKER_AMP_TWL_GPIO, 0);
158 
159         return 0;
160 }
161 
162 static int rx51_hp_event(struct snd_soc_dapm_widget *w,
163                          struct snd_kcontrol *k, int event)
164 {
165         struct snd_soc_codec *codec = w->dapm->codec;
166 
167         if (SND_SOC_DAPM_EVENT_ON(event))
168                 tpa6130a2_stereo_enable(codec, 1);
169         else
170                 tpa6130a2_stereo_enable(codec, 0);
171 
172         return 0;
173 }
174 
175 static int rx51_get_input(struct snd_kcontrol *kcontrol,
176                           struct snd_ctl_elem_value *ucontrol)
177 {
178         ucontrol->value.integer.value[0] = rx51_dmic_func;
179 
180         return 0;
181 }
182 
183 static int rx51_set_input(struct snd_kcontrol *kcontrol,
184                           struct snd_ctl_elem_value *ucontrol)
185 {
186         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
187 
188         if (rx51_dmic_func == ucontrol->value.integer.value[0])
189                 return 0;
190 
191         rx51_dmic_func = ucontrol->value.integer.value[0];
192         rx51_ext_control(&card->dapm);
193 
194         return 1;
195 }
196 
197 static int rx51_get_jack(struct snd_kcontrol *kcontrol,
198                          struct snd_ctl_elem_value *ucontrol)
199 {
200         ucontrol->value.integer.value[0] = rx51_jack_func;
201 
202         return 0;
203 }
204 
205 static int rx51_set_jack(struct snd_kcontrol *kcontrol,
206                          struct snd_ctl_elem_value *ucontrol)
207 {
208         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
209 
210         if (rx51_jack_func == ucontrol->value.integer.value[0])
211                 return 0;
212 
213         rx51_jack_func = ucontrol->value.integer.value[0];
214         rx51_ext_control(&card->dapm);
215 
216         return 1;
217 }
218 
219 static struct snd_soc_jack rx51_av_jack;
220 
221 static struct snd_soc_jack_gpio rx51_av_jack_gpios[] = {
222         {
223                 .gpio = RX51_JACK_DETECT_GPIO,
224                 .name = "avdet-gpio",
225                 .report = SND_JACK_HEADSET,
226                 .invert = 1,
227                 .debounce_time = 200,
228         },
229 };
230 
231 static const struct snd_soc_dapm_widget aic34_dapm_widgets[] = {
232         SND_SOC_DAPM_SPK("Ext Spk", rx51_spk_event),
233         SND_SOC_DAPM_MIC("DMic", NULL),
234         SND_SOC_DAPM_HP("Headphone Jack", rx51_hp_event),
235         SND_SOC_DAPM_MIC("HS Mic", NULL),
236         SND_SOC_DAPM_LINE("FM Transmitter", NULL),
237 };
238 
239 static const struct snd_soc_dapm_widget aic34_dapm_widgetsb[] = {
240         SND_SOC_DAPM_SPK("Earphone", NULL),
241 };
242 
243 static const struct snd_soc_dapm_route audio_map[] = {
244         {"Ext Spk", NULL, "HPLOUT"},
245         {"Ext Spk", NULL, "HPROUT"},
246         {"Headphone Jack", NULL, "LLOUT"},
247         {"Headphone Jack", NULL, "RLOUT"},
248         {"FM Transmitter", NULL, "LLOUT"},
249         {"FM Transmitter", NULL, "RLOUT"},
250 
251         {"DMic Rate 64", NULL, "Mic Bias"},
252         {"Mic Bias", NULL, "DMic"},
253 };
254 
255 static const struct snd_soc_dapm_route audio_mapb[] = {
256         {"b LINE2R", NULL, "MONO_LOUT"},
257         {"Earphone", NULL, "b HPLOUT"},
258 
259         {"LINE1L", NULL, "b Mic Bias"},
260         {"b Mic Bias", NULL, "HS Mic"}
261 };
262 
263 static const char *spk_function[] = {"Off", "On"};
264 static const char *input_function[] = {"ADC", "Digital Mic"};
265 static const char *jack_function[] = {"Off", "TV-OUT", "Headphone", "Headset"};
266 
267 static const struct soc_enum rx51_enum[] = {
268         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
269         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
270         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
271 };
272 
273 static const struct snd_kcontrol_new aic34_rx51_controls[] = {
274         SOC_ENUM_EXT("Speaker Function", rx51_enum[0],
275                      rx51_get_spk, rx51_set_spk),
276         SOC_ENUM_EXT("Input Select",  rx51_enum[1],
277                      rx51_get_input, rx51_set_input),
278         SOC_ENUM_EXT("Jack Function", rx51_enum[2],
279                      rx51_get_jack, rx51_set_jack),
280         SOC_DAPM_PIN_SWITCH("FM Transmitter"),
281 };
282 
283 static const struct snd_kcontrol_new aic34_rx51_controlsb[] = {
284         SOC_DAPM_PIN_SWITCH("Earphone"),
285 };
286 
287 static int rx51_aic34_init(struct snd_soc_pcm_runtime *rtd)
288 {
289         struct snd_soc_codec *codec = rtd->codec;
290         struct snd_soc_dapm_context *dapm = &codec->dapm;
291         int err;
292 
293         /* Set up NC codec pins */
294         snd_soc_dapm_nc_pin(dapm, "MIC3L");
295         snd_soc_dapm_nc_pin(dapm, "MIC3R");
296         snd_soc_dapm_nc_pin(dapm, "LINE1R");
297 
298         /* Add RX-51 specific controls */
299         err = snd_soc_add_card_controls(rtd->card, aic34_rx51_controls,
300                                    ARRAY_SIZE(aic34_rx51_controls));
301         if (err < 0)
302                 return err;
303 
304         /* Add RX-51 specific widgets */
305         snd_soc_dapm_new_controls(dapm, aic34_dapm_widgets,
306                                   ARRAY_SIZE(aic34_dapm_widgets));
307 
308         /* Set up RX-51 specific audio path audio_map */
309         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
310 
311         err = tpa6130a2_add_controls(codec);
312         if (err < 0)
313                 return err;
314         snd_soc_limit_volume(codec, "TPA6130A2 Headphone Playback Volume", 42);
315 
316         err = omap_mcbsp_st_add_controls(rtd);
317         if (err < 0)
318                 return err;
319 
320         /* AV jack detection */
321         err = snd_soc_jack_new(codec, "AV Jack",
322                                SND_JACK_HEADSET | SND_JACK_VIDEOOUT,
323                                &rx51_av_jack);
324         if (err)
325                 return err;
326         err = snd_soc_jack_add_gpios(&rx51_av_jack,
327                                      ARRAY_SIZE(rx51_av_jack_gpios),
328                                      rx51_av_jack_gpios);
329 
330         return err;
331 }
332 
333 static int rx51_aic34b_init(struct snd_soc_dapm_context *dapm)
334 {
335         int err;
336 
337         err = snd_soc_add_card_controls(dapm->card, aic34_rx51_controlsb,
338                                    ARRAY_SIZE(aic34_rx51_controlsb));
339         if (err < 0)
340                 return err;
341 
342         err = snd_soc_dapm_new_controls(dapm, aic34_dapm_widgetsb,
343                                         ARRAY_SIZE(aic34_dapm_widgetsb));
344         if (err < 0)
345                 return 0;
346 
347         return snd_soc_dapm_add_routes(dapm, audio_mapb,
348                                        ARRAY_SIZE(audio_mapb));
349 }
350 
351 /* Digital audio interface glue - connects codec <--> CPU */
352 static struct snd_soc_dai_link rx51_dai[] = {
353         {
354                 .name = "TLV320AIC34",
355                 .stream_name = "AIC34",
356                 .cpu_dai_name = "omap-mcbsp.2",
357                 .codec_dai_name = "tlv320aic3x-hifi",
358                 .platform_name = "omap-pcm-audio",
359                 .codec_name = "tlv320aic3x-codec.2-0018",
360                 .dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
361                            SND_SOC_DAIFMT_CBM_CFM,
362                 .init = rx51_aic34_init,
363                 .ops = &rx51_ops,
364         },
365 };
366 
367 static struct snd_soc_aux_dev rx51_aux_dev[] = {
368         {
369                 .name = "TLV320AIC34b",
370                 .codec_name = "tlv320aic3x-codec.2-0019",
371                 .init = rx51_aic34b_init,
372         },
373 };
374 
375 static struct snd_soc_codec_conf rx51_codec_conf[] = {
376         {
377                 .dev_name = "tlv320aic3x-codec.2-0019",
378                 .name_prefix = "b",
379         },
380 };
381 
382 /* Audio card */
383 static struct snd_soc_card rx51_sound_card = {
384         .name = "RX-51",
385         .owner = THIS_MODULE,
386         .dai_link = rx51_dai,
387         .num_links = ARRAY_SIZE(rx51_dai),
388         .aux_dev = rx51_aux_dev,
389         .num_aux_devs = ARRAY_SIZE(rx51_aux_dev),
390         .codec_conf = rx51_codec_conf,
391         .num_configs = ARRAY_SIZE(rx51_codec_conf),
392 };
393 
394 static struct platform_device *rx51_snd_device;
395 
396 static int __init rx51_soc_init(void)
397 {
398         int err;
399 
400         if (!machine_is_nokia_rx51())
401                 return -ENODEV;
402 
403         err = gpio_request_one(RX51_TVOUT_SEL_GPIO,
404                                GPIOF_DIR_OUT | GPIOF_INIT_LOW, "tvout_sel");
405         if (err)
406                 goto err_gpio_tvout_sel;
407         err = gpio_request_one(RX51_ECI_SW_GPIO,
408                                GPIOF_DIR_OUT | GPIOF_INIT_HIGH, "eci_sw");
409         if (err)
410                 goto err_gpio_eci_sw;
411 
412         rx51_snd_device = platform_device_alloc("soc-audio", -1);
413         if (!rx51_snd_device) {
414                 err = -ENOMEM;
415                 goto err1;
416         }
417 
418         platform_set_drvdata(rx51_snd_device, &rx51_sound_card);
419 
420         err = platform_device_add(rx51_snd_device);
421         if (err)
422                 goto err2;
423 
424         return 0;
425 err2:
426         platform_device_put(rx51_snd_device);
427 err1:
428         gpio_free(RX51_ECI_SW_GPIO);
429 err_gpio_eci_sw:
430         gpio_free(RX51_TVOUT_SEL_GPIO);
431 err_gpio_tvout_sel:
432 
433         return err;
434 }
435 
436 static void __exit rx51_soc_exit(void)
437 {
438         snd_soc_jack_free_gpios(&rx51_av_jack, ARRAY_SIZE(rx51_av_jack_gpios),
439                                 rx51_av_jack_gpios);
440 
441         platform_device_unregister(rx51_snd_device);
442         gpio_free(RX51_ECI_SW_GPIO);
443         gpio_free(RX51_TVOUT_SEL_GPIO);
444 }
445 
446 module_init(rx51_soc_init);
447 module_exit(rx51_soc_exit);
448 
449 MODULE_AUTHOR("Nokia Corporation");
450 MODULE_DESCRIPTION("ALSA SoC Nokia RX-51");
451 MODULE_LICENSE("GPL");
452 

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