1/*
2 * omap-twl4030.c  --  SoC audio for TI SoC based boards with twl4030 codec
3 *
4 * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com
5 * All rights reserved.
6 *
7 * Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
8 *
9 * This driver replaces the following machine drivers:
10 * omap3beagle (Author: Steve Sakoman <steve@sakoman.com>)
11 * omap3evm (Author: Anuj Aggarwal <anuj.aggarwal@ti.com>)
12 * overo (Author: Steve Sakoman <steve@sakoman.com>)
13 * igep0020 (Author: Enric Balletbo i Serra <eballetbo@iseebcn.com>)
14 * zoom2 (Author: Misael Lopez Cruz <misael.lopez@ti.com>)
15 * sdp3430 (Author: Misael Lopez Cruz <misael.lopez@ti.com>)
16 *
17 * This program is free software; you can redistribute it and/or
18 * modify it under the terms of the GNU General Public License
19 * version 2 as published by the Free Software Foundation.
20 *
21 * This program is distributed in the hope that it will be useful, but
22 * WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
24 * General Public License for more details.
25 *
26 * You should have received a copy of the GNU General Public License
27 * along with this program; if not, write to the Free Software
28 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
29 * 02110-1301 USA
30 *
31 */
32
33#include <linux/platform_device.h>
34#include <linux/platform_data/omap-twl4030.h>
35#include <linux/module.h>
36#include <linux/of.h>
37#include <linux/gpio.h>
38#include <linux/of_gpio.h>
39
40#include <sound/core.h>
41#include <sound/pcm.h>
42#include <sound/soc.h>
43#include <sound/jack.h>
44
45#include "omap-mcbsp.h"
46
47struct omap_twl4030 {
48	int jack_detect;	/* board can detect jack events */
49	struct snd_soc_jack hs_jack;
50};
51
52static int omap_twl4030_hw_params(struct snd_pcm_substream *substream,
53	struct snd_pcm_hw_params *params)
54{
55	struct snd_soc_pcm_runtime *rtd = substream->private_data;
56	unsigned int fmt;
57
58	switch (params_channels(params)) {
59	case 2: /* Stereo I2S mode */
60		fmt =	SND_SOC_DAIFMT_I2S |
61			SND_SOC_DAIFMT_NB_NF |
62			SND_SOC_DAIFMT_CBM_CFM;
63		break;
64	case 4: /* Four channel TDM mode */
65		fmt =	SND_SOC_DAIFMT_DSP_A |
66			SND_SOC_DAIFMT_IB_NF |
67			SND_SOC_DAIFMT_CBM_CFM;
68		break;
69	default:
70		return -EINVAL;
71	}
72
73	return snd_soc_runtime_set_dai_fmt(rtd, fmt);
74}
75
76static struct snd_soc_ops omap_twl4030_ops = {
77	.hw_params = omap_twl4030_hw_params,
78};
79
80static const struct snd_soc_dapm_widget dapm_widgets[] = {
81	SND_SOC_DAPM_SPK("Earpiece Spk", NULL),
82	SND_SOC_DAPM_SPK("Handsfree Spk", NULL),
83	SND_SOC_DAPM_HP("Headset Stereophone", NULL),
84	SND_SOC_DAPM_SPK("Ext Spk", NULL),
85	SND_SOC_DAPM_SPK("Carkit Spk", NULL),
86
87	SND_SOC_DAPM_MIC("Main Mic", NULL),
88	SND_SOC_DAPM_MIC("Sub Mic", NULL),
89	SND_SOC_DAPM_MIC("Headset Mic", NULL),
90	SND_SOC_DAPM_MIC("Carkit Mic", NULL),
91	SND_SOC_DAPM_MIC("Digital0 Mic", NULL),
92	SND_SOC_DAPM_MIC("Digital1 Mic", NULL),
93	SND_SOC_DAPM_LINE("Line In", NULL),
94};
95
96static const struct snd_soc_dapm_route audio_map[] = {
97	/* Headset Stereophone:  HSOL, HSOR */
98	{"Headset Stereophone", NULL, "HSOL"},
99	{"Headset Stereophone", NULL, "HSOR"},
100	/* External Speakers: HFL, HFR */
101	{"Handsfree Spk", NULL, "HFL"},
102	{"Handsfree Spk", NULL, "HFR"},
103	/* External Speakers: PredrivL, PredrivR */
104	{"Ext Spk", NULL, "PREDRIVEL"},
105	{"Ext Spk", NULL, "PREDRIVER"},
106	/* Carkit speakers:  CARKITL, CARKITR */
107	{"Carkit Spk", NULL, "CARKITL"},
108	{"Carkit Spk", NULL, "CARKITR"},
109	/* Earpiece */
110	{"Earpiece Spk", NULL, "EARPIECE"},
111
112	/* External Mics: MAINMIC, SUBMIC with bias */
113	{"MAINMIC", NULL, "Main Mic"},
114	{"Main Mic", NULL, "Mic Bias 1"},
115	{"SUBMIC", NULL, "Sub Mic"},
116	{"Sub Mic", NULL, "Mic Bias 2"},
117	/* Headset Mic: HSMIC with bias */
118	{"HSMIC", NULL, "Headset Mic"},
119	{"Headset Mic", NULL, "Headset Mic Bias"},
120	/* Digital Mics: DIGIMIC0, DIGIMIC1 with bias */
121	{"DIGIMIC0", NULL, "Digital0 Mic"},
122	{"Digital0 Mic", NULL, "Mic Bias 1"},
123	{"DIGIMIC1", NULL, "Digital1 Mic"},
124	{"Digital1 Mic", NULL, "Mic Bias 2"},
125	/* Carkit In: CARKITMIC */
126	{"CARKITMIC", NULL, "Carkit Mic"},
127	/* Aux In: AUXL, AUXR */
128	{"AUXL", NULL, "Line In"},
129	{"AUXR", NULL, "Line In"},
130};
131
132/* Headset jack detection DAPM pins */
133static struct snd_soc_jack_pin hs_jack_pins[] = {
134	{
135		.pin = "Headset Mic",
136		.mask = SND_JACK_MICROPHONE,
137	},
138	{
139		.pin = "Headset Stereophone",
140		.mask = SND_JACK_HEADPHONE,
141	},
142};
143
144/* Headset jack detection gpios */
145static struct snd_soc_jack_gpio hs_jack_gpios[] = {
146	{
147		.name = "hsdet-gpio",
148		.report = SND_JACK_HEADSET,
149		.debounce_time = 200,
150	},
151};
152
153static inline void twl4030_disconnect_pin(struct snd_soc_dapm_context *dapm,
154					  int connected, char *pin)
155{
156	if (!connected)
157		snd_soc_dapm_disable_pin(dapm, pin);
158}
159
160static int omap_twl4030_init(struct snd_soc_pcm_runtime *rtd)
161{
162	struct snd_soc_codec *codec = rtd->codec;
163	struct snd_soc_card *card = rtd->card;
164	struct snd_soc_dapm_context *dapm = &codec->dapm;
165	struct omap_tw4030_pdata *pdata = dev_get_platdata(card->dev);
166	struct omap_twl4030 *priv = snd_soc_card_get_drvdata(card);
167	int ret = 0;
168
169	/* Headset jack detection only if it is supported */
170	if (priv->jack_detect > 0) {
171		hs_jack_gpios[0].gpio = priv->jack_detect;
172
173		ret = snd_soc_card_jack_new(rtd->card, "Headset Jack",
174					    SND_JACK_HEADSET, &priv->hs_jack,
175					    hs_jack_pins,
176					    ARRAY_SIZE(hs_jack_pins));
177		if (ret)
178			return ret;
179
180		ret = snd_soc_jack_add_gpios(&priv->hs_jack,
181					     ARRAY_SIZE(hs_jack_gpios),
182					     hs_jack_gpios);
183		if (ret)
184			return ret;
185	}
186
187	/*
188	 * NULL pdata means we booted with DT. In this case the routing is
189	 * provided and the card is fully routed, no need to mark pins.
190	 */
191	if (!pdata || !pdata->custom_routing)
192		return ret;
193
194	/* Disable not connected paths if not used */
195	twl4030_disconnect_pin(dapm, pdata->has_ear, "Earpiece Spk");
196	twl4030_disconnect_pin(dapm, pdata->has_hf, "Handsfree Spk");
197	twl4030_disconnect_pin(dapm, pdata->has_hs, "Headset Stereophone");
198	twl4030_disconnect_pin(dapm, pdata->has_predriv, "Ext Spk");
199	twl4030_disconnect_pin(dapm, pdata->has_carkit, "Carkit Spk");
200
201	twl4030_disconnect_pin(dapm, pdata->has_mainmic, "Main Mic");
202	twl4030_disconnect_pin(dapm, pdata->has_submic, "Sub Mic");
203	twl4030_disconnect_pin(dapm, pdata->has_hsmic, "Headset Mic");
204	twl4030_disconnect_pin(dapm, pdata->has_carkitmic, "Carkit Mic");
205	twl4030_disconnect_pin(dapm, pdata->has_digimic0, "Digital0 Mic");
206	twl4030_disconnect_pin(dapm, pdata->has_digimic1, "Digital1 Mic");
207	twl4030_disconnect_pin(dapm, pdata->has_linein, "Line In");
208
209	return ret;
210}
211
212static int omap_twl4030_card_remove(struct snd_soc_card *card)
213{
214	struct omap_twl4030 *priv = snd_soc_card_get_drvdata(card);
215
216	if (priv->jack_detect > 0)
217		snd_soc_jack_free_gpios(&priv->hs_jack,
218					ARRAY_SIZE(hs_jack_gpios),
219					hs_jack_gpios);
220
221	return 0;
222}
223
224/* Digital audio interface glue - connects codec <--> CPU */
225static struct snd_soc_dai_link omap_twl4030_dai_links[] = {
226	{
227		.name = "TWL4030 HiFi",
228		.stream_name = "TWL4030 HiFi",
229		.cpu_dai_name = "omap-mcbsp.2",
230		.codec_dai_name = "twl4030-hifi",
231		.platform_name = "omap-mcbsp.2",
232		.codec_name = "twl4030-codec",
233		.init = omap_twl4030_init,
234		.ops = &omap_twl4030_ops,
235	},
236	{
237		.name = "TWL4030 Voice",
238		.stream_name = "TWL4030 Voice",
239		.cpu_dai_name = "omap-mcbsp.3",
240		.codec_dai_name = "twl4030-voice",
241		.platform_name = "omap-mcbsp.3",
242		.codec_name = "twl4030-codec",
243		.dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
244			   SND_SOC_DAIFMT_CBM_CFM,
245	},
246};
247
248/* Audio machine driver */
249static struct snd_soc_card omap_twl4030_card = {
250	.owner = THIS_MODULE,
251	.remove = omap_twl4030_card_remove,
252	.dai_link = omap_twl4030_dai_links,
253	.num_links = ARRAY_SIZE(omap_twl4030_dai_links),
254
255	.dapm_widgets = dapm_widgets,
256	.num_dapm_widgets = ARRAY_SIZE(dapm_widgets),
257	.dapm_routes = audio_map,
258	.num_dapm_routes = ARRAY_SIZE(audio_map),
259};
260
261static int omap_twl4030_probe(struct platform_device *pdev)
262{
263	struct omap_tw4030_pdata *pdata = dev_get_platdata(&pdev->dev);
264	struct device_node *node = pdev->dev.of_node;
265	struct snd_soc_card *card = &omap_twl4030_card;
266	struct omap_twl4030 *priv;
267	int ret = 0;
268
269	card->dev = &pdev->dev;
270
271	priv = devm_kzalloc(&pdev->dev, sizeof(struct omap_twl4030), GFP_KERNEL);
272	if (priv == NULL)
273		return -ENOMEM;
274
275	if (node) {
276		struct device_node *dai_node;
277		struct property *prop;
278
279		if (snd_soc_of_parse_card_name(card, "ti,model")) {
280			dev_err(&pdev->dev, "Card name is not provided\n");
281			return -ENODEV;
282		}
283
284		dai_node = of_parse_phandle(node, "ti,mcbsp", 0);
285		if (!dai_node) {
286			dev_err(&pdev->dev, "McBSP node is not provided\n");
287			return -EINVAL;
288		}
289		omap_twl4030_dai_links[0].cpu_dai_name  = NULL;
290		omap_twl4030_dai_links[0].cpu_of_node = dai_node;
291
292		omap_twl4030_dai_links[0].platform_name  = NULL;
293		omap_twl4030_dai_links[0].platform_of_node = dai_node;
294
295		dai_node = of_parse_phandle(node, "ti,mcbsp-voice", 0);
296		if (!dai_node) {
297			card->num_links = 1;
298		} else {
299			omap_twl4030_dai_links[1].cpu_dai_name  = NULL;
300			omap_twl4030_dai_links[1].cpu_of_node = dai_node;
301
302			omap_twl4030_dai_links[1].platform_name  = NULL;
303			omap_twl4030_dai_links[1].platform_of_node = dai_node;
304		}
305
306		priv->jack_detect = of_get_named_gpio(node,
307						      "ti,jack-det-gpio", 0);
308
309		/* Optional: audio routing can be provided */
310		prop = of_find_property(node, "ti,audio-routing", NULL);
311		if (prop) {
312			ret = snd_soc_of_parse_audio_routing(card,
313							    "ti,audio-routing");
314			if (ret)
315				return ret;
316
317			card->fully_routed = 1;
318		}
319	} else if (pdata) {
320		if (pdata->card_name) {
321			card->name = pdata->card_name;
322		} else {
323			dev_err(&pdev->dev, "Card name is not provided\n");
324			return -ENODEV;
325		}
326
327		if (!pdata->voice_connected)
328			card->num_links = 1;
329
330		priv->jack_detect = pdata->jack_detect;
331	} else {
332		dev_err(&pdev->dev, "Missing pdata\n");
333		return -ENODEV;
334	}
335
336	snd_soc_card_set_drvdata(card, priv);
337	ret = devm_snd_soc_register_card(&pdev->dev, card);
338	if (ret) {
339		dev_err(&pdev->dev, "devm_snd_soc_register_card() failed: %d\n",
340			ret);
341		return ret;
342	}
343
344	return 0;
345}
346
347static const struct of_device_id omap_twl4030_of_match[] = {
348	{.compatible = "ti,omap-twl4030", },
349	{ },
350};
351MODULE_DEVICE_TABLE(of, omap_twl4030_of_match);
352
353static struct platform_driver omap_twl4030_driver = {
354	.driver = {
355		.name = "omap-twl4030",
356		.pm = &snd_soc_pm_ops,
357		.of_match_table = omap_twl4030_of_match,
358	},
359	.probe = omap_twl4030_probe,
360};
361
362module_platform_driver(omap_twl4030_driver);
363
364MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
365MODULE_DESCRIPTION("ALSA SoC for TI SoC based boards with twl4030 codec");
366MODULE_LICENSE("GPL");
367MODULE_ALIAS("platform:omap-twl4030");
368