xref: /openbmc/linux/sound/soc/ti/rx51.c (revision 19aed2d6)
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 
rx51_ext_control(struct snd_soc_dapm_context * dapm)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 		fallthrough;
59 	case RX51_JACK_HP:
60 		hp = 1;
61 		break;
62 	}
63 
64 	snd_soc_dapm_mutex_lock(dapm);
65 
66 	if (rx51_spk_func)
67 		snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk");
68 	else
69 		snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk");
70 	if (rx51_dmic_func)
71 		snd_soc_dapm_enable_pin_unlocked(dapm, "DMic");
72 	else
73 		snd_soc_dapm_disable_pin_unlocked(dapm, "DMic");
74 	if (hp)
75 		snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
76 	else
77 		snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
78 	if (hs)
79 		snd_soc_dapm_enable_pin_unlocked(dapm, "HS Mic");
80 	else
81 		snd_soc_dapm_disable_pin_unlocked(dapm, "HS Mic");
82 
83 	gpiod_set_value(pdata->tvout_selection_gpio, tvout);
84 
85 	snd_soc_dapm_sync_unlocked(dapm);
86 
87 	snd_soc_dapm_mutex_unlock(dapm);
88 }
89 
rx51_startup(struct snd_pcm_substream * substream)90 static int rx51_startup(struct snd_pcm_substream *substream)
91 {
92 	struct snd_pcm_runtime *runtime = substream->runtime;
93 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
94 	struct snd_soc_card *card = rtd->card;
95 
96 	snd_pcm_hw_constraint_single(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, 2);
97 	rx51_ext_control(&card->dapm);
98 
99 	return 0;
100 }
101 
rx51_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)102 static int rx51_hw_params(struct snd_pcm_substream *substream,
103 	struct snd_pcm_hw_params *params)
104 {
105 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
106 	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
107 
108 	/* Set the codec system clock for DAC and ADC */
109 	return snd_soc_dai_set_sysclk(codec_dai, 0, 19200000,
110 				      SND_SOC_CLOCK_IN);
111 }
112 
113 static const struct snd_soc_ops rx51_ops = {
114 	.startup = rx51_startup,
115 	.hw_params = rx51_hw_params,
116 };
117 
rx51_get_spk(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)118 static int rx51_get_spk(struct snd_kcontrol *kcontrol,
119 			struct snd_ctl_elem_value *ucontrol)
120 {
121 	ucontrol->value.enumerated.item[0] = rx51_spk_func;
122 
123 	return 0;
124 }
125 
rx51_set_spk(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)126 static int rx51_set_spk(struct snd_kcontrol *kcontrol,
127 			struct snd_ctl_elem_value *ucontrol)
128 {
129 	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
130 
131 	if (rx51_spk_func == ucontrol->value.enumerated.item[0])
132 		return 0;
133 
134 	rx51_spk_func = ucontrol->value.enumerated.item[0];
135 	rx51_ext_control(&card->dapm);
136 
137 	return 1;
138 }
139 
rx51_spk_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * k,int event)140 static int rx51_spk_event(struct snd_soc_dapm_widget *w,
141 			  struct snd_kcontrol *k, int event)
142 {
143 	struct snd_soc_dapm_context *dapm = w->dapm;
144 	struct snd_soc_card *card = dapm->card;
145 	struct rx51_audio_pdata *pdata = snd_soc_card_get_drvdata(card);
146 
147 	gpiod_set_raw_value_cansleep(pdata->speaker_amp_gpio,
148 				     !!SND_SOC_DAPM_EVENT_ON(event));
149 
150 	return 0;
151 }
152 
rx51_get_input(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)153 static int rx51_get_input(struct snd_kcontrol *kcontrol,
154 			  struct snd_ctl_elem_value *ucontrol)
155 {
156 	ucontrol->value.enumerated.item[0] = rx51_dmic_func;
157 
158 	return 0;
159 }
160 
rx51_set_input(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)161 static int rx51_set_input(struct snd_kcontrol *kcontrol,
162 			  struct snd_ctl_elem_value *ucontrol)
163 {
164 	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
165 
166 	if (rx51_dmic_func == ucontrol->value.enumerated.item[0])
167 		return 0;
168 
169 	rx51_dmic_func = ucontrol->value.enumerated.item[0];
170 	rx51_ext_control(&card->dapm);
171 
172 	return 1;
173 }
174 
rx51_get_jack(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)175 static int rx51_get_jack(struct snd_kcontrol *kcontrol,
176 			 struct snd_ctl_elem_value *ucontrol)
177 {
178 	ucontrol->value.enumerated.item[0] = rx51_jack_func;
179 
180 	return 0;
181 }
182 
rx51_set_jack(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)183 static int rx51_set_jack(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_jack_func == ucontrol->value.enumerated.item[0])
189 		return 0;
190 
191 	rx51_jack_func = ucontrol->value.enumerated.item[0];
192 	rx51_ext_control(&card->dapm);
193 
194 	return 1;
195 }
196 
197 static struct snd_soc_jack rx51_av_jack;
198 
199 static struct snd_soc_jack_gpio rx51_av_jack_gpios[] = {
200 	{
201 		.name = "avdet-gpio",
202 		.report = SND_JACK_HEADSET,
203 		.invert = 1,
204 		.debounce_time = 200,
205 	},
206 };
207 
208 static const struct snd_soc_dapm_widget aic34_dapm_widgets[] = {
209 	SND_SOC_DAPM_SPK("Ext Spk", rx51_spk_event),
210 	SND_SOC_DAPM_MIC("DMic", NULL),
211 	SND_SOC_DAPM_HP("Headphone Jack", NULL),
212 	SND_SOC_DAPM_MIC("HS Mic", NULL),
213 	SND_SOC_DAPM_LINE("FM Transmitter", NULL),
214 	SND_SOC_DAPM_SPK("Earphone", NULL),
215 };
216 
217 static const struct snd_soc_dapm_route audio_map[] = {
218 	{"Ext Spk", NULL, "HPLOUT"},
219 	{"Ext Spk", NULL, "HPROUT"},
220 	{"Ext Spk", NULL, "HPLCOM"},
221 	{"Ext Spk", NULL, "HPRCOM"},
222 	{"FM Transmitter", NULL, "LLOUT"},
223 	{"FM Transmitter", NULL, "RLOUT"},
224 
225 	{"Headphone Jack", NULL, "TPA6130A2 HPLEFT"},
226 	{"Headphone Jack", NULL, "TPA6130A2 HPRIGHT"},
227 	{"TPA6130A2 LEFTIN", NULL, "LLOUT"},
228 	{"TPA6130A2 RIGHTIN", NULL, "RLOUT"},
229 
230 	{"DMic Rate 64", NULL, "DMic"},
231 	{"DMic", NULL, "Mic Bias"},
232 
233 	{"b LINE2R", NULL, "MONO_LOUT"},
234 	{"Earphone", NULL, "b HPLOUT"},
235 
236 	{"LINE1L", NULL, "HS Mic"},
237 	{"HS Mic", NULL, "b Mic Bias"},
238 };
239 
240 static const char * const spk_function[] = {"Off", "On"};
241 static const char * const input_function[] = {"ADC", "Digital Mic"};
242 static const char * const jack_function[] = {
243 	"Off", "TV-OUT", "Headphone", "Headset"
244 };
245 
246 static const struct soc_enum rx51_enum[] = {
247 	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
248 	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
249 	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
250 };
251 
252 static const struct snd_kcontrol_new aic34_rx51_controls[] = {
253 	SOC_ENUM_EXT("Speaker Function", rx51_enum[0],
254 		     rx51_get_spk, rx51_set_spk),
255 	SOC_ENUM_EXT("Input Select",  rx51_enum[1],
256 		     rx51_get_input, rx51_set_input),
257 	SOC_ENUM_EXT("Jack Function", rx51_enum[2],
258 		     rx51_get_jack, rx51_set_jack),
259 	SOC_DAPM_PIN_SWITCH("FM Transmitter"),
260 	SOC_DAPM_PIN_SWITCH("Earphone"),
261 };
262 
rx51_aic34_init(struct snd_soc_pcm_runtime * rtd)263 static int rx51_aic34_init(struct snd_soc_pcm_runtime *rtd)
264 {
265 	struct snd_soc_card *card = rtd->card;
266 	struct rx51_audio_pdata *pdata = snd_soc_card_get_drvdata(card);
267 	int err;
268 
269 	snd_soc_limit_volume(card, "TPA6130A2 Headphone Playback Volume", 42);
270 
271 	err = omap_mcbsp_st_add_controls(rtd, 2);
272 	if (err < 0) {
273 		dev_err(card->dev, "Failed to add MCBSP controls\n");
274 		return err;
275 	}
276 
277 	/* AV jack detection */
278 	err = snd_soc_card_jack_new(rtd->card, "AV Jack",
279 				    SND_JACK_HEADSET | SND_JACK_VIDEOOUT,
280 				    &rx51_av_jack);
281 	if (err) {
282 		dev_err(card->dev, "Failed to add AV Jack\n");
283 		return err;
284 	}
285 
286 	/* prepare gpio for snd_soc_jack_add_gpios */
287 	rx51_av_jack_gpios[0].gpio = desc_to_gpio(pdata->jack_detection_gpio);
288 	devm_gpiod_put(card->dev, pdata->jack_detection_gpio);
289 
290 	err = snd_soc_jack_add_gpios(&rx51_av_jack,
291 				     ARRAY_SIZE(rx51_av_jack_gpios),
292 				     rx51_av_jack_gpios);
293 	if (err) {
294 		dev_err(card->dev, "Failed to add GPIOs\n");
295 		return err;
296 	}
297 
298 	return err;
299 }
300 
301 /* Digital audio interface glue - connects codec <--> CPU */
302 SND_SOC_DAILINK_DEFS(aic34,
303 	DAILINK_COMP_ARRAY(COMP_CPU("omap-mcbsp.2")),
304 	DAILINK_COMP_ARRAY(COMP_CODEC("tlv320aic3x-codec.2-0018",
305 				      "tlv320aic3x-hifi")),
306 	DAILINK_COMP_ARRAY(COMP_PLATFORM("omap-mcbsp.2")));
307 
308 static struct snd_soc_dai_link rx51_dai[] = {
309 	{
310 		.name = "TLV320AIC34",
311 		.stream_name = "AIC34",
312 		.dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
313 			   SND_SOC_DAIFMT_CBM_CFM,
314 		.init = rx51_aic34_init,
315 		.ops = &rx51_ops,
316 		SND_SOC_DAILINK_REG(aic34),
317 	},
318 };
319 
320 static struct snd_soc_aux_dev rx51_aux_dev[] = {
321 	{
322 		.dlc = COMP_AUX("tlv320aic3x-codec.2-0019"),
323 	},
324 	{
325 		.dlc = COMP_AUX("tpa6130a2.2-0060"),
326 	},
327 };
328 
329 static struct snd_soc_codec_conf rx51_codec_conf[] = {
330 	{
331 		.dlc = COMP_CODEC_CONF("tlv320aic3x-codec.2-0019"),
332 		.name_prefix = "b",
333 	},
334 	{
335 		.dlc = COMP_CODEC_CONF("tpa6130a2.2-0060"),
336 		.name_prefix = "TPA6130A2",
337 	},
338 };
339 
340 /* Audio card */
341 static struct snd_soc_card rx51_sound_card = {
342 	.name = "RX-51",
343 	.owner = THIS_MODULE,
344 	.dai_link = rx51_dai,
345 	.num_links = ARRAY_SIZE(rx51_dai),
346 	.aux_dev = rx51_aux_dev,
347 	.num_aux_devs = ARRAY_SIZE(rx51_aux_dev),
348 	.codec_conf = rx51_codec_conf,
349 	.num_configs = ARRAY_SIZE(rx51_codec_conf),
350 	.fully_routed = true,
351 
352 	.controls = aic34_rx51_controls,
353 	.num_controls = ARRAY_SIZE(aic34_rx51_controls),
354 	.dapm_widgets = aic34_dapm_widgets,
355 	.num_dapm_widgets = ARRAY_SIZE(aic34_dapm_widgets),
356 	.dapm_routes = audio_map,
357 	.num_dapm_routes = ARRAY_SIZE(audio_map),
358 };
359 
rx51_soc_probe(struct platform_device * pdev)360 static int rx51_soc_probe(struct platform_device *pdev)
361 {
362 	struct rx51_audio_pdata *pdata;
363 	struct device_node *np = pdev->dev.of_node;
364 	struct snd_soc_card *card = &rx51_sound_card;
365 	int err;
366 
367 	if (!machine_is_nokia_rx51() && !of_machine_is_compatible("nokia,omap3-n900"))
368 		return -ENODEV;
369 
370 	card->dev = &pdev->dev;
371 
372 	if (np) {
373 		struct device_node *dai_node;
374 
375 		dai_node = of_parse_phandle(np, "nokia,cpu-dai", 0);
376 		if (!dai_node) {
377 			dev_err(&pdev->dev, "McBSP node is not provided\n");
378 			return -EINVAL;
379 		}
380 		rx51_dai[0].cpus->dai_name = NULL;
381 		rx51_dai[0].platforms->name = NULL;
382 		rx51_dai[0].cpus->of_node = dai_node;
383 		rx51_dai[0].platforms->of_node = dai_node;
384 
385 		dai_node = of_parse_phandle(np, "nokia,audio-codec", 0);
386 		if (!dai_node) {
387 			dev_err(&pdev->dev, "Codec node is not provided\n");
388 			return -EINVAL;
389 		}
390 		rx51_dai[0].codecs->name = NULL;
391 		rx51_dai[0].codecs->of_node = dai_node;
392 
393 		dai_node = of_parse_phandle(np, "nokia,audio-codec", 1);
394 		if (!dai_node) {
395 			dev_err(&pdev->dev, "Auxiliary Codec node is not provided\n");
396 			return -EINVAL;
397 		}
398 		rx51_aux_dev[0].dlc.name = NULL;
399 		rx51_aux_dev[0].dlc.of_node = dai_node;
400 		rx51_codec_conf[0].dlc.name = NULL;
401 		rx51_codec_conf[0].dlc.of_node = dai_node;
402 
403 		dai_node = of_parse_phandle(np, "nokia,headphone-amplifier", 0);
404 		if (!dai_node) {
405 			dev_err(&pdev->dev, "Headphone amplifier node is not provided\n");
406 			return -EINVAL;
407 		}
408 		rx51_aux_dev[1].dlc.name = NULL;
409 		rx51_aux_dev[1].dlc.of_node = dai_node;
410 		rx51_codec_conf[1].dlc.name = NULL;
411 		rx51_codec_conf[1].dlc.of_node = dai_node;
412 	}
413 
414 	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
415 	if (pdata == NULL)
416 		return -ENOMEM;
417 
418 	snd_soc_card_set_drvdata(card, pdata);
419 
420 	pdata->tvout_selection_gpio = devm_gpiod_get(card->dev,
421 						     "tvout-selection",
422 						     GPIOD_OUT_LOW);
423 	if (IS_ERR(pdata->tvout_selection_gpio)) {
424 		dev_err(card->dev, "could not get tvout selection gpio\n");
425 		return PTR_ERR(pdata->tvout_selection_gpio);
426 	}
427 
428 	pdata->jack_detection_gpio = devm_gpiod_get(card->dev,
429 						    "jack-detection",
430 						    GPIOD_ASIS);
431 	if (IS_ERR(pdata->jack_detection_gpio)) {
432 		dev_err(card->dev, "could not get jack detection gpio\n");
433 		return PTR_ERR(pdata->jack_detection_gpio);
434 	}
435 
436 	pdata->eci_sw_gpio = devm_gpiod_get(card->dev, "eci-switch",
437 					    GPIOD_OUT_HIGH);
438 	if (IS_ERR(pdata->eci_sw_gpio)) {
439 		dev_err(card->dev, "could not get eci switch gpio\n");
440 		return PTR_ERR(pdata->eci_sw_gpio);
441 	}
442 
443 	pdata->speaker_amp_gpio = devm_gpiod_get(card->dev,
444 						 "speaker-amplifier",
445 						 GPIOD_OUT_LOW);
446 	if (IS_ERR(pdata->speaker_amp_gpio)) {
447 		dev_err(card->dev, "could not get speaker enable gpio\n");
448 		return PTR_ERR(pdata->speaker_amp_gpio);
449 	}
450 
451 	err = devm_snd_soc_register_card(card->dev, card);
452 	if (err) {
453 		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", err);
454 		return err;
455 	}
456 
457 	return 0;
458 }
459 
460 #if defined(CONFIG_OF)
461 static const struct of_device_id rx51_audio_of_match[] = {
462 	{ .compatible = "nokia,n900-audio", },
463 	{},
464 };
465 MODULE_DEVICE_TABLE(of, rx51_audio_of_match);
466 #endif
467 
468 static struct platform_driver rx51_soc_driver = {
469 	.driver = {
470 		.name = "rx51-audio",
471 		.of_match_table = of_match_ptr(rx51_audio_of_match),
472 	},
473 	.probe = rx51_soc_probe,
474 };
475 
476 module_platform_driver(rx51_soc_driver);
477 
478 MODULE_AUTHOR("Nokia Corporation");
479 MODULE_DESCRIPTION("ALSA SoC Nokia RX-51");
480 MODULE_LICENSE("GPL");
481 MODULE_ALIAS("platform:rx51-audio");
482