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Linux/sound/soc/ti/rx51.c

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  1 // SPDX-License-Identifier: GPL-2.0-only
  2 /*
  3  * rx51.c  --  SoC audio for Nokia RX-51
  4  *
  5  * Copyright (C) 2008 - 2009 Nokia Corporation
  6  *
  7  * Contact: Peter Ujfalusi <peter.ujfalusi@ti.com>
  8  *          Eduardo Valentin <eduardo.valentin@nokia.com>
  9  *          Jarkko Nikula <jarkko.nikula@bitmer.com>
 10  */
 11 
 12 #include <linux/delay.h>
 13 #include <linux/gpio.h>
 14 #include <linux/platform_device.h>
 15 #include <linux/gpio/consumer.h>
 16 #include <linux/module.h>
 17 #include <sound/core.h>
 18 #include <sound/jack.h>
 19 #include <sound/pcm.h>
 20 #include <sound/soc.h>
 21 #include <linux/platform_data/asoc-ti-mcbsp.h>
 22 
 23 #include <asm/mach-types.h>
 24 
 25 #include "omap-mcbsp.h"
 26 
 27 enum {
 28         RX51_JACK_DISABLED,
 29         RX51_JACK_TVOUT,                /* tv-out with stereo output */
 30         RX51_JACK_HP,                   /* headphone: stereo output, no mic */
 31         RX51_JACK_HS,                   /* headset: stereo output with mic */
 32 };
 33 
 34 struct rx51_audio_pdata {
 35         struct gpio_desc *tvout_selection_gpio;
 36         struct gpio_desc *jack_detection_gpio;
 37         struct gpio_desc *eci_sw_gpio;
 38         struct gpio_desc *speaker_amp_gpio;
 39 };
 40 
 41 static int rx51_spk_func;
 42 static int rx51_dmic_func;
 43 static int rx51_jack_func;
 44 
 45 static void rx51_ext_control(struct snd_soc_dapm_context *dapm)
 46 {
 47         struct snd_soc_card *card = dapm->card;
 48         struct rx51_audio_pdata *pdata = snd_soc_card_get_drvdata(card);
 49         int hp = 0, hs = 0, tvout = 0;
 50 
 51         switch (rx51_jack_func) {
 52         case RX51_JACK_TVOUT:
 53                 tvout = 1;
 54                 hp = 1;
 55                 break;
 56         case RX51_JACK_HS:
 57                 hs = 1;
 58         case RX51_JACK_HP:
 59                 hp = 1;
 60                 break;
 61         }
 62 
 63         snd_soc_dapm_mutex_lock(dapm);
 64 
 65         if (rx51_spk_func)
 66                 snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk");
 67         else
 68                 snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk");
 69         if (rx51_dmic_func)
 70                 snd_soc_dapm_enable_pin_unlocked(dapm, "DMic");
 71         else
 72                 snd_soc_dapm_disable_pin_unlocked(dapm, "DMic");
 73         if (hp)
 74                 snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
 75         else
 76                 snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
 77         if (hs)
 78                 snd_soc_dapm_enable_pin_unlocked(dapm, "HS Mic");
 79         else
 80                 snd_soc_dapm_disable_pin_unlocked(dapm, "HS Mic");
 81 
 82         gpiod_set_value(pdata->tvout_selection_gpio, tvout);
 83 
 84         snd_soc_dapm_sync_unlocked(dapm);
 85 
 86         snd_soc_dapm_mutex_unlock(dapm);
 87 }
 88 
 89 static int rx51_startup(struct snd_pcm_substream *substream)
 90 {
 91         struct snd_pcm_runtime *runtime = substream->runtime;
 92         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 93         struct snd_soc_card *card = rtd->card;
 94 
 95         snd_pcm_hw_constraint_single(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, 2);
 96         rx51_ext_control(&card->dapm);
 97 
 98         return 0;
 99 }
100 
101 static int rx51_hw_params(struct snd_pcm_substream *substream,
102         struct snd_pcm_hw_params *params)
103 {
104         struct snd_soc_pcm_runtime *rtd = substream->private_data;
105         struct snd_soc_dai *codec_dai = rtd->codec_dai;
106 
107         /* Set the codec system clock for DAC and ADC */
108         return snd_soc_dai_set_sysclk(codec_dai, 0, 19200000,
109                                       SND_SOC_CLOCK_IN);
110 }
111 
112 static const struct snd_soc_ops rx51_ops = {
113         .startup = rx51_startup,
114         .hw_params = rx51_hw_params,
115 };
116 
117 static int rx51_get_spk(struct snd_kcontrol *kcontrol,
118                         struct snd_ctl_elem_value *ucontrol)
119 {
120         ucontrol->value.enumerated.item[0] = rx51_spk_func;
121 
122         return 0;
123 }
124 
125 static int rx51_set_spk(struct snd_kcontrol *kcontrol,
126                         struct snd_ctl_elem_value *ucontrol)
127 {
128         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
129 
130         if (rx51_spk_func == ucontrol->value.enumerated.item[0])
131                 return 0;
132 
133         rx51_spk_func = ucontrol->value.enumerated.item[0];
134         rx51_ext_control(&card->dapm);
135 
136         return 1;
137 }
138 
139 static int rx51_spk_event(struct snd_soc_dapm_widget *w,
140                           struct snd_kcontrol *k, int event)
141 {
142         struct snd_soc_dapm_context *dapm = w->dapm;
143         struct snd_soc_card *card = dapm->card;
144         struct rx51_audio_pdata *pdata = snd_soc_card_get_drvdata(card);
145 
146         gpiod_set_raw_value_cansleep(pdata->speaker_amp_gpio,
147                                      !!SND_SOC_DAPM_EVENT_ON(event));
148 
149         return 0;
150 }
151 
152 static int rx51_get_input(struct snd_kcontrol *kcontrol,
153                           struct snd_ctl_elem_value *ucontrol)
154 {
155         ucontrol->value.enumerated.item[0] = rx51_dmic_func;
156 
157         return 0;
158 }
159 
160 static int rx51_set_input(struct snd_kcontrol *kcontrol,
161                           struct snd_ctl_elem_value *ucontrol)
162 {
163         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
164 
165         if (rx51_dmic_func == ucontrol->value.enumerated.item[0])
166                 return 0;
167 
168         rx51_dmic_func = ucontrol->value.enumerated.item[0];
169         rx51_ext_control(&card->dapm);
170 
171         return 1;
172 }
173 
174 static int rx51_get_jack(struct snd_kcontrol *kcontrol,
175                          struct snd_ctl_elem_value *ucontrol)
176 {
177         ucontrol->value.enumerated.item[0] = rx51_jack_func;
178 
179         return 0;
180 }
181 
182 static int rx51_set_jack(struct snd_kcontrol *kcontrol,
183                          struct snd_ctl_elem_value *ucontrol)
184 {
185         struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
186 
187         if (rx51_jack_func == ucontrol->value.enumerated.item[0])
188                 return 0;
189 
190         rx51_jack_func = ucontrol->value.enumerated.item[0];
191         rx51_ext_control(&card->dapm);
192 
193         return 1;
194 }
195 
196 static struct snd_soc_jack rx51_av_jack;
197 
198 static struct snd_soc_jack_gpio rx51_av_jack_gpios[] = {
199         {
200                 .name = "avdet-gpio",
201                 .report = SND_JACK_HEADSET,
202                 .invert = 1,
203                 .debounce_time = 200,
204         },
205 };
206 
207 static const struct snd_soc_dapm_widget aic34_dapm_widgets[] = {
208         SND_SOC_DAPM_SPK("Ext Spk", rx51_spk_event),
209         SND_SOC_DAPM_MIC("DMic", NULL),
210         SND_SOC_DAPM_HP("Headphone Jack", NULL),
211         SND_SOC_DAPM_MIC("HS Mic", NULL),
212         SND_SOC_DAPM_LINE("FM Transmitter", NULL),
213         SND_SOC_DAPM_SPK("Earphone", NULL),
214 };
215 
216 static const struct snd_soc_dapm_route audio_map[] = {
217         {"Ext Spk", NULL, "HPLOUT"},
218         {"Ext Spk", NULL, "HPROUT"},
219         {"Ext Spk", NULL, "HPLCOM"},
220         {"Ext Spk", NULL, "HPRCOM"},
221         {"FM Transmitter", NULL, "LLOUT"},
222         {"FM Transmitter", NULL, "RLOUT"},
223 
224         {"Headphone Jack", NULL, "TPA6130A2 HPLEFT"},
225         {"Headphone Jack", NULL, "TPA6130A2 HPRIGHT"},
226         {"TPA6130A2 LEFTIN", NULL, "LLOUT"},
227         {"TPA6130A2 RIGHTIN", NULL, "RLOUT"},
228 
229         {"DMic Rate 64", NULL, "DMic"},
230         {"DMic", NULL, "Mic Bias"},
231 
232         {"b LINE2R", NULL, "MONO_LOUT"},
233         {"Earphone", NULL, "b HPLOUT"},
234 
235         {"LINE1L", NULL, "HS Mic"},
236         {"HS Mic", NULL, "b Mic Bias"},
237 };
238 
239 static const char * const spk_function[] = {"Off", "On"};
240 static const char * const input_function[] = {"ADC", "Digital Mic"};
241 static const char * const jack_function[] = {
242         "Off", "TV-OUT", "Headphone", "Headset"
243 };
244 
245 static const struct soc_enum rx51_enum[] = {
246         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
247         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
248         SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
249 };
250 
251 static const struct snd_kcontrol_new aic34_rx51_controls[] = {
252         SOC_ENUM_EXT("Speaker Function", rx51_enum[0],
253                      rx51_get_spk, rx51_set_spk),
254         SOC_ENUM_EXT("Input Select",  rx51_enum[1],
255                      rx51_get_input, rx51_set_input),
256         SOC_ENUM_EXT("Jack Function", rx51_enum[2],
257                      rx51_get_jack, rx51_set_jack),
258         SOC_DAPM_PIN_SWITCH("FM Transmitter"),
259         SOC_DAPM_PIN_SWITCH("Earphone"),
260 };
261 
262 static int rx51_aic34_init(struct snd_soc_pcm_runtime *rtd)
263 {
264         struct snd_soc_card *card = rtd->card;
265         struct rx51_audio_pdata *pdata = snd_soc_card_get_drvdata(card);
266         int err;
267 
268         snd_soc_limit_volume(card, "TPA6130A2 Headphone Playback Volume", 42);
269 
270         err = omap_mcbsp_st_add_controls(rtd, 2);
271         if (err < 0) {
272                 dev_err(card->dev, "Failed to add MCBSP controls\n");
273                 return err;
274         }
275 
276         /* AV jack detection */
277         err = snd_soc_card_jack_new(rtd->card, "AV Jack",
278                                     SND_JACK_HEADSET | SND_JACK_VIDEOOUT,
279                                     &rx51_av_jack, NULL, 0);
280         if (err) {
281                 dev_err(card->dev, "Failed to add AV Jack\n");
282                 return err;
283         }
284 
285         /* prepare gpio for snd_soc_jack_add_gpios */
286         rx51_av_jack_gpios[0].gpio = desc_to_gpio(pdata->jack_detection_gpio);
287         devm_gpiod_put(card->dev, pdata->jack_detection_gpio);
288 
289         err = snd_soc_jack_add_gpios(&rx51_av_jack,
290                                      ARRAY_SIZE(rx51_av_jack_gpios),
291                                      rx51_av_jack_gpios);
292         if (err) {
293                 dev_err(card->dev, "Failed to add GPIOs\n");
294                 return err;
295         }
296 
297         return err;
298 }
299 
300 /* Digital audio interface glue - connects codec <--> CPU */
301 SND_SOC_DAILINK_DEFS(aic34,
302         DAILINK_COMP_ARRAY(COMP_CPU("omap-mcbsp.2")),
303         DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.2-0018",
304                                       "tlv320aic3x-hifi")),
305         DAILINK_COMP_ARRAY(COMP_PLATFORM("omap-mcbsp.2")));
306 
307 static struct snd_soc_dai_link rx51_dai[] = {
308         {
309                 .name = "TLV320AIC34",
310                 .stream_name = "AIC34",
311                 .dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
312                            SND_SOC_DAIFMT_CBM_CFM,
313                 .init = rx51_aic34_init,
314                 .ops = &rx51_ops,
315                 SND_SOC_DAILINK_REG(aic34),
316         },
317 };
318 
319 static struct snd_soc_aux_dev rx51_aux_dev[] = {
320         {
321                 .name = "TLV320AIC34b",
322                 .codec_name = "tlv320aic3x-codec.2-0019",
323         },
324         {
325                 .name = "TPA61320A2",
326                 .codec_name = "tpa6130a2.2-0060",
327         },
328 };
329 
330 static struct snd_soc_codec_conf rx51_codec_conf[] = {
331         {
332                 .dev_name = "tlv320aic3x-codec.2-0019",
333                 .name_prefix = "b",
334         },
335         {
336                 .dev_name = "tpa6130a2.2-0060",
337                 .name_prefix = "TPA6130A2",
338         },
339 };
340 
341 /* Audio card */
342 static struct snd_soc_card rx51_sound_card = {
343         .name = "RX-51",
344         .owner = THIS_MODULE,
345         .dai_link = rx51_dai,
346         .num_links = ARRAY_SIZE(rx51_dai),
347         .aux_dev = rx51_aux_dev,
348         .num_aux_devs = ARRAY_SIZE(rx51_aux_dev),
349         .codec_conf = rx51_codec_conf,
350         .num_configs = ARRAY_SIZE(rx51_codec_conf),
351         .fully_routed = true,
352 
353         .controls = aic34_rx51_controls,
354         .num_controls = ARRAY_SIZE(aic34_rx51_controls),
355         .dapm_widgets = aic34_dapm_widgets,
356         .num_dapm_widgets = ARRAY_SIZE(aic34_dapm_widgets),
357         .dapm_routes = audio_map,
358         .num_dapm_routes = ARRAY_SIZE(audio_map),
359 };
360 
361 static int rx51_soc_probe(struct platform_device *pdev)
362 {
363         struct rx51_audio_pdata *pdata;
364         struct device_node *np = pdev->dev.of_node;
365         struct snd_soc_card *card = &rx51_sound_card;
366         int err;
367 
368         if (!machine_is_nokia_rx51() && !of_machine_is_compatible("nokia,omap3-n900"))
369                 return -ENODEV;
370 
371         card->dev = &pdev->dev;
372 
373         if (np) {
374                 struct device_node *dai_node;
375 
376                 dai_node = of_parse_phandle(np, "nokia,cpu-dai", 0);
377                 if (!dai_node) {
378                         dev_err(&pdev->dev, "McBSP node is not provided\n");
379                         return -EINVAL;
380                 }
381                 rx51_dai[0].cpus->dai_name = NULL;
382                 rx51_dai[0].platforms->name = NULL;
383                 rx51_dai[0].cpus->of_node = dai_node;
384                 rx51_dai[0].platforms->of_node = dai_node;
385 
386                 dai_node = of_parse_phandle(np, "nokia,audio-codec", 0);
387                 if (!dai_node) {
388                         dev_err(&pdev->dev, "Codec node is not provided\n");
389                         return -EINVAL;
390                 }
391                 rx51_dai[0].codecs->name = NULL;
392                 rx51_dai[0].codecs->of_node = dai_node;
393 
394                 dai_node = of_parse_phandle(np, "nokia,audio-codec", 1);
395                 if (!dai_node) {
396                         dev_err(&pdev->dev, "Auxiliary Codec node is not provided\n");
397                         return -EINVAL;
398                 }
399                 rx51_aux_dev[0].codec_name = NULL;
400                 rx51_aux_dev[0].codec_of_node = dai_node;
401                 rx51_codec_conf[0].dev_name = NULL;
402                 rx51_codec_conf[0].of_node = dai_node;
403 
404                 dai_node = of_parse_phandle(np, "nokia,headphone-amplifier", 0);
405                 if (!dai_node) {
406                         dev_err(&pdev->dev, "Headphone amplifier node is not provided\n");
407                         return -EINVAL;
408                 }
409                 rx51_aux_dev[1].codec_name = NULL;
410                 rx51_aux_dev[1].codec_of_node = dai_node;
411                 rx51_codec_conf[1].dev_name = NULL;
412                 rx51_codec_conf[1].of_node = dai_node;
413         }
414 
415         pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
416         if (pdata == NULL)
417                 return -ENOMEM;
418 
419         snd_soc_card_set_drvdata(card, pdata);
420 
421         pdata->tvout_selection_gpio = devm_gpiod_get(card->dev,
422                                                      "tvout-selection",
423                                                      GPIOD_OUT_LOW);
424         if (IS_ERR(pdata->tvout_selection_gpio)) {
425                 dev_err(card->dev, "could not get tvout selection gpio\n");
426                 return PTR_ERR(pdata->tvout_selection_gpio);
427         }
428 
429         pdata->jack_detection_gpio = devm_gpiod_get(card->dev,
430                                                     "jack-detection",
431                                                     GPIOD_ASIS);
432         if (IS_ERR(pdata->jack_detection_gpio)) {
433                 dev_err(card->dev, "could not get jack detection gpio\n");
434                 return PTR_ERR(pdata->jack_detection_gpio);
435         }
436 
437         pdata->eci_sw_gpio = devm_gpiod_get(card->dev, "eci-switch",
438                                             GPIOD_OUT_HIGH);
439         if (IS_ERR(pdata->eci_sw_gpio)) {
440                 dev_err(card->dev, "could not get eci switch gpio\n");
441                 return PTR_ERR(pdata->eci_sw_gpio);
442         }
443 
444         pdata->speaker_amp_gpio = devm_gpiod_get(card->dev,
445                                                  "speaker-amplifier",
446                                                  GPIOD_OUT_LOW);
447         if (IS_ERR(pdata->speaker_amp_gpio)) {
448                 dev_err(card->dev, "could not get speaker enable gpio\n");
449                 return PTR_ERR(pdata->speaker_amp_gpio);
450         }
451 
452         err = devm_snd_soc_register_card(card->dev, card);
453         if (err) {
454                 dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", err);
455                 return err;
456         }
457 
458         return 0;
459 }
460 
461 #if defined(CONFIG_OF)
462 static const struct of_device_id rx51_audio_of_match[] = {
463         { .compatible = "nokia,n900-audio", },
464         {},
465 };
466 MODULE_DEVICE_TABLE(of, rx51_audio_of_match);
467 #endif
468 
469 static struct platform_driver rx51_soc_driver = {
470         .driver = {
471                 .name = "rx51-audio",
472                 .of_match_table = of_match_ptr(rx51_audio_of_match),
473         },
474         .probe = rx51_soc_probe,
475 };
476 
477 module_platform_driver(rx51_soc_driver);
478 
479 MODULE_AUTHOR("Nokia Corporation");
480 MODULE_DESCRIPTION("ALSA SoC Nokia RX-51");
481 MODULE_LICENSE("GPL");
482 MODULE_ALIAS("platform:rx51-audio");
483 

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