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Linux/sound/soc/omap/omap-twl4030.c

  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 
 47 struct omap_twl4030 {
 48         int jack_detect;        /* board can detect jack events */
 49         struct snd_soc_jack hs_jack;
 50 };
 51 
 52 static 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         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 57         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 58         struct snd_soc_codec *codec = rtd->codec;
 59         struct snd_soc_card *card = codec->card;
 60         unsigned int fmt;
 61         int ret;
 62 
 63         switch (params_channels(params)) {
 64         case 2: /* Stereo I2S mode */
 65                 fmt =   SND_SOC_DAIFMT_I2S |
 66                         SND_SOC_DAIFMT_NB_NF |
 67                         SND_SOC_DAIFMT_CBM_CFM;
 68                 break;
 69         case 4: /* Four channel TDM mode */
 70                 fmt =   SND_SOC_DAIFMT_DSP_A |
 71                         SND_SOC_DAIFMT_IB_NF |
 72                         SND_SOC_DAIFMT_CBM_CFM;
 73                 break;
 74         default:
 75                 return -EINVAL;
 76         }
 77 
 78         /* Set codec DAI configuration */
 79         ret = snd_soc_dai_set_fmt(codec_dai, fmt);
 80         if (ret < 0) {
 81                 dev_err(card->dev, "can't set codec DAI configuration\n");
 82                 return ret;
 83         }
 84 
 85         /* Set cpu DAI configuration */
 86         ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
 87         if (ret < 0) {
 88                 dev_err(card->dev, "can't set cpu DAI configuration\n");
 89                 return ret;
 90         }
 91 
 92         return 0;
 93 }
 94 
 95 static struct snd_soc_ops omap_twl4030_ops = {
 96         .hw_params = omap_twl4030_hw_params,
 97 };
 98 
 99 static const struct snd_soc_dapm_widget dapm_widgets[] = {
100         SND_SOC_DAPM_SPK("Earpiece Spk", NULL),
101         SND_SOC_DAPM_SPK("Handsfree Spk", NULL),
102         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
103         SND_SOC_DAPM_SPK("Ext Spk", NULL),
104         SND_SOC_DAPM_SPK("Carkit Spk", NULL),
105 
106         SND_SOC_DAPM_MIC("Main Mic", NULL),
107         SND_SOC_DAPM_MIC("Sub Mic", NULL),
108         SND_SOC_DAPM_MIC("Headset Mic", NULL),
109         SND_SOC_DAPM_MIC("Carkit Mic", NULL),
110         SND_SOC_DAPM_MIC("Digital0 Mic", NULL),
111         SND_SOC_DAPM_MIC("Digital1 Mic", NULL),
112         SND_SOC_DAPM_LINE("Line In", NULL),
113 };
114 
115 static const struct snd_soc_dapm_route audio_map[] = {
116         /* Headset Stereophone:  HSOL, HSOR */
117         {"Headset Stereophone", NULL, "HSOL"},
118         {"Headset Stereophone", NULL, "HSOR"},
119         /* External Speakers: HFL, HFR */
120         {"Handsfree Spk", NULL, "HFL"},
121         {"Handsfree Spk", NULL, "HFR"},
122         /* External Speakers: PredrivL, PredrivR */
123         {"Ext Spk", NULL, "PREDRIVEL"},
124         {"Ext Spk", NULL, "PREDRIVER"},
125         /* Carkit speakers:  CARKITL, CARKITR */
126         {"Carkit Spk", NULL, "CARKITL"},
127         {"Carkit Spk", NULL, "CARKITR"},
128         /* Earpiece */
129         {"Earpiece Spk", NULL, "EARPIECE"},
130 
131         /* External Mics: MAINMIC, SUBMIC with bias */
132         {"MAINMIC", NULL, "Main Mic"},
133         {"Main Mic", NULL, "Mic Bias 1"},
134         {"SUBMIC", NULL, "Sub Mic"},
135         {"Sub Mic", NULL, "Mic Bias 2"},
136         /* Headset Mic: HSMIC with bias */
137         {"HSMIC", NULL, "Headset Mic"},
138         {"Headset Mic", NULL, "Headset Mic Bias"},
139         /* Digital Mics: DIGIMIC0, DIGIMIC1 with bias */
140         {"DIGIMIC0", NULL, "Digital0 Mic"},
141         {"Digital0 Mic", NULL, "Mic Bias 1"},
142         {"DIGIMIC1", NULL, "Digital1 Mic"},
143         {"Digital1 Mic", NULL, "Mic Bias 2"},
144         /* Carkit In: CARKITMIC */
145         {"CARKITMIC", NULL, "Carkit Mic"},
146         /* Aux In: AUXL, AUXR */
147         {"AUXL", NULL, "Line In"},
148         {"AUXR", NULL, "Line In"},
149 };
150 
151 /* Headset jack detection DAPM pins */
152 static struct snd_soc_jack_pin hs_jack_pins[] = {
153         {
154                 .pin = "Headset Mic",
155                 .mask = SND_JACK_MICROPHONE,
156         },
157         {
158                 .pin = "Headset Stereophone",
159                 .mask = SND_JACK_HEADPHONE,
160         },
161 };
162 
163 /* Headset jack detection gpios */
164 static struct snd_soc_jack_gpio hs_jack_gpios[] = {
165         {
166                 .name = "hsdet-gpio",
167                 .report = SND_JACK_HEADSET,
168                 .debounce_time = 200,
169         },
170 };
171 
172 static inline void twl4030_disconnect_pin(struct snd_soc_dapm_context *dapm,
173                                           int connected, char *pin)
174 {
175         if (!connected)
176                 snd_soc_dapm_disable_pin(dapm, pin);
177 }
178 
179 static int omap_twl4030_init(struct snd_soc_pcm_runtime *rtd)
180 {
181         struct snd_soc_codec *codec = rtd->codec;
182         struct snd_soc_card *card = codec->card;
183         struct snd_soc_dapm_context *dapm = &codec->dapm;
184         struct omap_tw4030_pdata *pdata = dev_get_platdata(card->dev);
185         struct omap_twl4030 *priv = snd_soc_card_get_drvdata(card);
186         int ret = 0;
187 
188         /* Headset jack detection only if it is supported */
189         if (priv->jack_detect > 0) {
190                 hs_jack_gpios[0].gpio = priv->jack_detect;
191 
192                 ret = snd_soc_jack_new(codec, "Headset Jack", SND_JACK_HEADSET,
193                                        &priv->hs_jack);
194                 if (ret)
195                         return ret;
196 
197                 ret = snd_soc_jack_add_pins(&priv->hs_jack,
198                                             ARRAY_SIZE(hs_jack_pins),
199                                             hs_jack_pins);
200                 if (ret)
201                         return ret;
202 
203                 ret = snd_soc_jack_add_gpios(&priv->hs_jack,
204                                              ARRAY_SIZE(hs_jack_gpios),
205                                              hs_jack_gpios);
206                 if (ret)
207                         return ret;
208         }
209 
210         /*
211          * NULL pdata means we booted with DT. In this case the routing is
212          * provided and the card is fully routed, no need to mark pins.
213          */
214         if (!pdata || !pdata->custom_routing)
215                 return ret;
216 
217         /* Disable not connected paths if not used */
218         twl4030_disconnect_pin(dapm, pdata->has_ear, "Earpiece Spk");
219         twl4030_disconnect_pin(dapm, pdata->has_hf, "Handsfree Spk");
220         twl4030_disconnect_pin(dapm, pdata->has_hs, "Headset Stereophone");
221         twl4030_disconnect_pin(dapm, pdata->has_predriv, "Ext Spk");
222         twl4030_disconnect_pin(dapm, pdata->has_carkit, "Carkit Spk");
223 
224         twl4030_disconnect_pin(dapm, pdata->has_mainmic, "Main Mic");
225         twl4030_disconnect_pin(dapm, pdata->has_submic, "Sub Mic");
226         twl4030_disconnect_pin(dapm, pdata->has_hsmic, "Headset Mic");
227         twl4030_disconnect_pin(dapm, pdata->has_carkitmic, "Carkit Mic");
228         twl4030_disconnect_pin(dapm, pdata->has_digimic0, "Digital0 Mic");
229         twl4030_disconnect_pin(dapm, pdata->has_digimic1, "Digital1 Mic");
230         twl4030_disconnect_pin(dapm, pdata->has_linein, "Line In");
231 
232         return ret;
233 }
234 
235 /* Digital audio interface glue - connects codec <--> CPU */
236 static struct snd_soc_dai_link omap_twl4030_dai_links[] = {
237         {
238                 .name = "TWL4030 HiFi",
239                 .stream_name = "TWL4030 HiFi",
240                 .cpu_dai_name = "omap-mcbsp.2",
241                 .codec_dai_name = "twl4030-hifi",
242                 .platform_name = "omap-pcm-audio",
243                 .codec_name = "twl4030-codec",
244                 .init = omap_twl4030_init,
245                 .ops = &omap_twl4030_ops,
246         },
247         {
248                 .name = "TWL4030 Voice",
249                 .stream_name = "TWL4030 Voice",
250                 .cpu_dai_name = "omap-mcbsp.3",
251                 .codec_dai_name = "twl4030-voice",
252                 .platform_name = "omap-pcm-audio",
253                 .codec_name = "twl4030-codec",
254                 .dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
255                            SND_SOC_DAIFMT_CBM_CFM,
256         },
257 };
258 
259 /* Audio machine driver */
260 static struct snd_soc_card omap_twl4030_card = {
261         .owner = THIS_MODULE,
262         .dai_link = omap_twl4030_dai_links,
263         .num_links = ARRAY_SIZE(omap_twl4030_dai_links),
264 
265         .dapm_widgets = dapm_widgets,
266         .num_dapm_widgets = ARRAY_SIZE(dapm_widgets),
267         .dapm_routes = audio_map,
268         .num_dapm_routes = ARRAY_SIZE(audio_map),
269 };
270 
271 static int omap_twl4030_probe(struct platform_device *pdev)
272 {
273         struct omap_tw4030_pdata *pdata = dev_get_platdata(&pdev->dev);
274         struct device_node *node = pdev->dev.of_node;
275         struct snd_soc_card *card = &omap_twl4030_card;
276         struct omap_twl4030 *priv;
277         int ret = 0;
278 
279         card->dev = &pdev->dev;
280 
281         priv = devm_kzalloc(&pdev->dev, sizeof(struct omap_twl4030), GFP_KERNEL);
282         if (priv == NULL)
283                 return -ENOMEM;
284 
285         if (node) {
286                 struct device_node *dai_node;
287                 struct property *prop;
288 
289                 if (snd_soc_of_parse_card_name(card, "ti,model")) {
290                         dev_err(&pdev->dev, "Card name is not provided\n");
291                         return -ENODEV;
292                 }
293 
294                 dai_node = of_parse_phandle(node, "ti,mcbsp", 0);
295                 if (!dai_node) {
296                         dev_err(&pdev->dev, "McBSP node is not provided\n");
297                         return -EINVAL;
298                 }
299                 omap_twl4030_dai_links[0].cpu_dai_name  = NULL;
300                 omap_twl4030_dai_links[0].cpu_of_node = dai_node;
301 
302                 dai_node = of_parse_phandle(node, "ti,mcbsp-voice", 0);
303                 if (!dai_node) {
304                         card->num_links = 1;
305                 } else {
306                         omap_twl4030_dai_links[1].cpu_dai_name  = NULL;
307                         omap_twl4030_dai_links[1].cpu_of_node = dai_node;
308                 }
309 
310                 priv->jack_detect = of_get_named_gpio(node,
311                                                       "ti,jack-det-gpio", 0);
312 
313                 /* Optional: audio routing can be provided */
314                 prop = of_find_property(node, "ti,audio-routing", NULL);
315                 if (prop) {
316                         ret = snd_soc_of_parse_audio_routing(card,
317                                                             "ti,audio-routing");
318                         if (ret)
319                                 return ret;
320 
321                         card->fully_routed = 1;
322                 }
323         } else if (pdata) {
324                 if (pdata->card_name) {
325                         card->name = pdata->card_name;
326                 } else {
327                         dev_err(&pdev->dev, "Card name is not provided\n");
328                         return -ENODEV;
329                 }
330 
331                 if (!pdata->voice_connected)
332                         card->num_links = 1;
333 
334                 priv->jack_detect = pdata->jack_detect;
335         } else {
336                 dev_err(&pdev->dev, "Missing pdata\n");
337                 return -ENODEV;
338         }
339 
340         snd_soc_card_set_drvdata(card, priv);
341         ret = devm_snd_soc_register_card(&pdev->dev, card);
342         if (ret) {
343                 dev_err(&pdev->dev, "devm_snd_soc_register_card() failed: %d\n",
344                         ret);
345                 return ret;
346         }
347 
348         return 0;
349 }
350 
351 static int omap_twl4030_remove(struct platform_device *pdev)
352 {
353         struct snd_soc_card *card = platform_get_drvdata(pdev);
354         struct omap_twl4030 *priv = snd_soc_card_get_drvdata(card);
355 
356         if (priv->jack_detect > 0)
357                 snd_soc_jack_free_gpios(&priv->hs_jack,
358                                         ARRAY_SIZE(hs_jack_gpios),
359                                         hs_jack_gpios);
360 
361         return 0;
362 }
363 
364 static const struct of_device_id omap_twl4030_of_match[] = {
365         {.compatible = "ti,omap-twl4030", },
366         { },
367 };
368 MODULE_DEVICE_TABLE(of, omap_twl4030_of_match);
369 
370 static struct platform_driver omap_twl4030_driver = {
371         .driver = {
372                 .name = "omap-twl4030",
373                 .owner = THIS_MODULE,
374                 .pm = &snd_soc_pm_ops,
375                 .of_match_table = omap_twl4030_of_match,
376         },
377         .probe = omap_twl4030_probe,
378         .remove = omap_twl4030_remove,
379 };
380 
381 module_platform_driver(omap_twl4030_driver);
382 
383 MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
384 MODULE_DESCRIPTION("ALSA SoC for TI SoC based boards with twl4030 codec");
385 MODULE_LICENSE("GPL");
386 MODULE_ALIAS("platform:omap-twl4030");
387 

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