summaryrefslogtreecommitdiffstats
path: root/sound/soc/omap/omap-twl4030.c
blob: 6a8d6b5f160debac623f79ad72b91dd5c77b1550 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
/*
 * omap-twl4030.c  --  SoC audio for TI SoC based boards with twl4030 codec
 *
 * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com
 * All rights reserved.
 *
 * Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
 *
 * This driver replaces the following machine drivers:
 * omap3beagle (Author: Steve Sakoman <steve@sakoman.com>)
 * omap3evm (Author: Anuj Aggarwal <anuj.aggarwal@ti.com>)
 * overo (Author: Steve Sakoman <steve@sakoman.com>)
 * igep0020 (Author: Enric Balletbo i Serra <eballetbo@iseebcn.com>)
 * zoom2 (Author: Misael Lopez Cruz <misael.lopez@ti.com>)
 * sdp3430 (Author: Misael Lopez Cruz <misael.lopez@ti.com>)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 */

#include <linux/platform_device.h>
#include <linux/platform_data/omap-twl4030.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/gpio.h>
#include <linux/of_gpio.h>

#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/jack.h>

#include "omap-mcbsp.h"

struct omap_twl4030 {
	int jack_detect;	/* board can detect jack events */
	struct snd_soc_jack hs_jack;
};

static int omap_twl4030_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_card *card = codec->card;
	unsigned int fmt;
	int ret;

	switch (params_channels(params)) {
	case 2: /* Stereo I2S mode */
		fmt =	SND_SOC_DAIFMT_I2S |
			SND_SOC_DAIFMT_NB_NF |
			SND_SOC_DAIFMT_CBM_CFM;
		break;
	case 4: /* Four channel TDM mode */
		fmt =	SND_SOC_DAIFMT_DSP_A |
			SND_SOC_DAIFMT_IB_NF |
			SND_SOC_DAIFMT_CBM_CFM;
		break;
	default:
		return -EINVAL;
	}

	/* Set codec DAI configuration */
	ret = snd_soc_dai_set_fmt(codec_dai, fmt);
	if (ret < 0) {
		dev_err(card->dev, "can't set codec DAI configuration\n");
		return ret;
	}

	/* Set cpu DAI configuration */
	ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
	if (ret < 0) {
		dev_err(card->dev, "can't set cpu DAI configuration\n");
		return ret;
	}

	return 0;
}

static struct snd_soc_ops omap_twl4030_ops = {
	.hw_params = omap_twl4030_hw_params,
};

static const struct snd_soc_dapm_widget dapm_widgets[] = {
	SND_SOC_DAPM_SPK("Earpiece Spk", NULL),
	SND_SOC_DAPM_SPK("Handsfree Spk", NULL),
	SND_SOC_DAPM_HP("Headset Stereophone", NULL),
	SND_SOC_DAPM_SPK("Ext Spk", NULL),
	SND_SOC_DAPM_SPK("Carkit Spk", NULL),

	SND_SOC_DAPM_MIC("Main Mic", NULL),
	SND_SOC_DAPM_MIC("Sub Mic", NULL),
	SND_SOC_DAPM_MIC("Headset Mic", NULL),
	SND_SOC_DAPM_MIC("Carkit Mic", NULL),
	SND_SOC_DAPM_MIC("Digital0 Mic", NULL),
	SND_SOC_DAPM_MIC("Digital1 Mic", NULL),
	SND_SOC_DAPM_LINE("Line In", NULL),
};

static const struct snd_soc_dapm_route audio_map[] = {
	/* Headset Stereophone:  HSOL, HSOR */
	{"Headset Stereophone", NULL, "HSOL"},
	{"Headset Stereophone", NULL, "HSOR"},
	/* External Speakers: HFL, HFR */
	{"Handsfree Spk", NULL, "HFL"},
	{"Handsfree Spk", NULL, "HFR"},
	/* External Speakers: PredrivL, PredrivR */
	{"Ext Spk", NULL, "PREDRIVEL"},
	{"Ext Spk", NULL, "PREDRIVER"},
	/* Carkit speakers:  CARKITL, CARKITR */
	{"Carkit Spk", NULL, "CARKITL"},
	{"Carkit Spk", NULL, "CARKITR"},
	/* Earpiece */
	{"Earpiece Spk", NULL, "EARPIECE"},

	/* External Mics: MAINMIC, SUBMIC with bias */
	{"MAINMIC", NULL, "Main Mic"},
	{"Main Mic", NULL, "Mic Bias 1"},
	{"SUBMIC", NULL, "Sub Mic"},
	{"Sub Mic", NULL, "Mic Bias 2"},
	/* Headset Mic: HSMIC with bias */
	{"HSMIC", NULL, "Headset Mic"},
	{"Headset Mic", NULL, "Headset Mic Bias"},
	/* Digital Mics: DIGIMIC0, DIGIMIC1 with bias */
	{"DIGIMIC0", NULL, "Digital0 Mic"},
	{"Digital0 Mic", NULL, "Mic Bias 1"},
	{"DIGIMIC1", NULL, "Digital1 Mic"},
	{"Digital1 Mic", NULL, "Mic Bias 2"},
	/* Carkit In: CARKITMIC */
	{"CARKITMIC", NULL, "Carkit Mic"},
	/* Aux In: AUXL, AUXR */
	{"AUXL", NULL, "Line In"},
	{"AUXR", NULL, "Line In"},
};

/* Headset jack detection DAPM pins */
static struct snd_soc_jack_pin hs_jack_pins[] = {
	{
		.pin = "Headset Mic",
		.mask = SND_JACK_MICROPHONE,
	},
	{
		.pin = "Headset Stereophone",
		.mask = SND_JACK_HEADPHONE,
	},
};

/* Headset jack detection gpios */
static struct snd_soc_jack_gpio hs_jack_gpios[] = {
	{
		.name = "hsdet-gpio",
		.report = SND_JACK_HEADSET,
		.debounce_time = 200,
	},
};

static inline void twl4030_disconnect_pin(struct snd_soc_dapm_context *dapm,
					  int connected, char *pin)
{
	if (!connected)
		snd_soc_dapm_disable_pin(dapm, pin);
}

static int omap_twl4030_init(struct snd_soc_pcm_runtime *rtd)
{
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_card *card = codec->card;
	struct snd_soc_dapm_context *dapm = &codec->dapm;
	struct omap_tw4030_pdata *pdata = dev_get_platdata(card->dev);
	struct omap_twl4030 *priv = snd_soc_card_get_drvdata(card);
	int ret = 0;

	/* Headset jack detection only if it is supported */
	if (priv->jack_detect > 0) {
		hs_jack_gpios[0].gpio = priv->jack_detect;

		ret = snd_soc_jack_new(codec, "Headset Jack", SND_JACK_HEADSET,
				       &priv->hs_jack);
		if (ret)
			return ret;

		ret = snd_soc_jack_add_pins(&priv->hs_jack,
					    ARRAY_SIZE(hs_jack_pins),
					    hs_jack_pins);
		if (ret)
			return ret;

		ret = snd_soc_jack_add_gpios(&priv->hs_jack,
					     ARRAY_SIZE(hs_jack_gpios),
					     hs_jack_gpios);
		if (ret)
			return ret;
	}

	/*
	 * NULL pdata means we booted with DT. In this case the routing is
	 * provided and the card is fully routed, no need to mark pins.
	 */
	if (!pdata || !pdata->custom_routing)
		return ret;

	/* Disable not connected paths if not used */
	twl4030_disconnect_pin(dapm, pdata->has_ear, "Earpiece Spk");
	twl4030_disconnect_pin(dapm, pdata->has_hf, "Handsfree Spk");
	twl4030_disconnect_pin(dapm, pdata->has_hs, "Headset Stereophone");
	twl4030_disconnect_pin(dapm, pdata->has_predriv, "Ext Spk");
	twl4030_disconnect_pin(dapm, pdata->has_carkit, "Carkit Spk");

	twl4030_disconnect_pin(dapm, pdata->has_mainmic, "Main Mic");
	twl4030_disconnect_pin(dapm, pdata->has_submic, "Sub Mic");
	twl4030_disconnect_pin(dapm, pdata->has_hsmic, "Headset Mic");
	twl4030_disconnect_pin(dapm, pdata->has_carkitmic, "Carkit Mic");
	twl4030_disconnect_pin(dapm, pdata->has_digimic0, "Digital0 Mic");
	twl4030_disconnect_pin(dapm, pdata->has_digimic1, "Digital1 Mic");
	twl4030_disconnect_pin(dapm, pdata->has_linein, "Line In");

	return ret;
}

/* Digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link omap_twl4030_dai_links[] = {
	{
		.name = "TWL4030 HiFi",
		.stream_name = "TWL4030 HiFi",
		.cpu_dai_name = "omap-mcbsp.2",
		.codec_dai_name = "twl4030-hifi",
		.platform_name = "omap-pcm-audio",
		.codec_name = "twl4030-codec",
		.init = omap_twl4030_init,
		.ops = &omap_twl4030_ops,
	},
	{
		.name = "TWL4030 Voice",
		.stream_name = "TWL4030 Voice",
		.cpu_dai_name = "omap-mcbsp.3",
		.codec_dai_name = "twl4030-voice",
		.platform_name = "omap-pcm-audio",
		.codec_name = "twl4030-codec",
		.dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
			   SND_SOC_DAIFMT_CBM_CFM,
	},
};

/* Audio machine driver */
static struct snd_soc_card omap_twl4030_card = {
	.owner = THIS_MODULE,
	.dai_link = omap_twl4030_dai_links,
	.num_links = ARRAY_SIZE(omap_twl4030_dai_links),

	.dapm_widgets = dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(dapm_widgets),
	.dapm_routes = audio_map,
	.num_dapm_routes = ARRAY_SIZE(audio_map),
};

static int omap_twl4030_probe(struct platform_device *pdev)
{
	struct omap_tw4030_pdata *pdata = dev_get_platdata(&pdev->dev);
	struct device_node *node = pdev->dev.of_node;
	struct snd_soc_card *card = &omap_twl4030_card;
	struct omap_twl4030 *priv;
	int ret = 0;

	card->dev = &pdev->dev;

	priv = devm_kzalloc(&pdev->dev, sizeof(struct omap_twl4030), GFP_KERNEL);
	if (priv == NULL)
		return -ENOMEM;

	if (node) {
		struct device_node *dai_node;
		struct property *prop;

		if (snd_soc_of_parse_card_name(card, "ti,model")) {
			dev_err(&pdev->dev, "Card name is not provided\n");
			return -ENODEV;
		}

		dai_node = of_parse_phandle(node, "ti,mcbsp", 0);
		if (!dai_node) {
			dev_err(&pdev->dev, "McBSP node is not provided\n");
			return -EINVAL;
		}
		omap_twl4030_dai_links[0].cpu_dai_name  = NULL;
		omap_twl4030_dai_links[0].cpu_of_node = dai_node;

		dai_node = of_parse_phandle(node, "ti,mcbsp-voice", 0);
		if (!dai_node) {
			card->num_links = 1;
		} else {
			omap_twl4030_dai_links[1].cpu_dai_name  = NULL;
			omap_twl4030_dai_links[1].cpu_of_node = dai_node;
		}

		priv->jack_detect = of_get_named_gpio(node,
						      "ti,jack-det-gpio", 0);

		/* Optional: audio routing can be provided */
		prop = of_find_property(node, "ti,audio-routing", NULL);
		if (prop) {
			ret = snd_soc_of_parse_audio_routing(card,
							    "ti,audio-routing");
			if (ret)
				return ret;

			card->fully_routed = 1;
		}
	} else if (pdata) {
		if (pdata->card_name) {
			card->name = pdata->card_name;
		} else {
			dev_err(&pdev->dev, "Card name is not provided\n");
			return -ENODEV;
		}

		if (!pdata->voice_connected)
			card->num_links = 1;

		priv->jack_detect = pdata->jack_detect;
	} else {
		dev_err(&pdev->dev, "Missing pdata\n");
		return -ENODEV;
	}

	snd_soc_card_set_drvdata(card, priv);
	ret = devm_snd_soc_register_card(&pdev->dev, card);
	if (ret) {
		dev_err(&pdev->dev, "devm_snd_soc_register_card() failed: %d\n",
			ret);
		return ret;
	}

	return 0;
}

static int omap_twl4030_remove(struct platform_device *pdev)
{
	struct snd_soc_card *card = platform_get_drvdata(pdev);
	struct omap_twl4030 *priv = snd_soc_card_get_drvdata(card);

	if (priv->jack_detect > 0)
		snd_soc_jack_free_gpios(&priv->hs_jack,
					ARRAY_SIZE(hs_jack_gpios),
					hs_jack_gpios);

	return 0;
}

static const struct of_device_id omap_twl4030_of_match[] = {
	{.compatible = "ti,omap-twl4030", },
	{ },
};
MODULE_DEVICE_TABLE(of, omap_twl4030_of_match);

static struct platform_driver omap_twl4030_driver = {
	.driver = {
		.name = "omap-twl4030",
		.owner = THIS_MODULE,
		.pm = &snd_soc_pm_ops,
		.of_match_table = omap_twl4030_of_match,
	},
	.probe = omap_twl4030_probe,
	.remove = omap_twl4030_remove,
};

module_platform_driver(omap_twl4030_driver);

MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
MODULE_DESCRIPTION("ALSA SoC for TI SoC based boards with twl4030 codec");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:omap-twl4030");