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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_card *card = rtd->card;
 59         unsigned int fmt;
 60         int ret;
 61 
 62         switch (params_channels(params)) {
 63         case 2: /* Stereo I2S mode */
 64                 fmt =   SND_SOC_DAIFMT_I2S |
 65                         SND_SOC_DAIFMT_NB_NF |
 66                         SND_SOC_DAIFMT_CBM_CFM;
 67                 break;
 68         case 4: /* Four channel TDM mode */
 69                 fmt =   SND_SOC_DAIFMT_DSP_A |
 70                         SND_SOC_DAIFMT_IB_NF |
 71                         SND_SOC_DAIFMT_CBM_CFM;
 72                 break;
 73         default:
 74                 return -EINVAL;
 75         }
 76 
 77         /* Set codec DAI configuration */
 78         ret = snd_soc_dai_set_fmt(codec_dai, fmt);
 79         if (ret < 0) {
 80                 dev_err(card->dev, "can't set codec DAI configuration\n");
 81                 return ret;
 82         }
 83 
 84         /* Set cpu DAI configuration */
 85         ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
 86         if (ret < 0) {
 87                 dev_err(card->dev, "can't set cpu DAI configuration\n");
 88                 return ret;
 89         }
 90 
 91         return 0;
 92 }
 93 
 94 static struct snd_soc_ops omap_twl4030_ops = {
 95         .hw_params = omap_twl4030_hw_params,
 96 };
 97 
 98 static const struct snd_soc_dapm_widget dapm_widgets[] = {
 99         SND_SOC_DAPM_SPK("Earpiece Spk", NULL),
100         SND_SOC_DAPM_SPK("Handsfree Spk", NULL),
101         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
102         SND_SOC_DAPM_SPK("Ext Spk", NULL),
103         SND_SOC_DAPM_SPK("Carkit Spk", NULL),
104 
105         SND_SOC_DAPM_MIC("Main Mic", NULL),
106         SND_SOC_DAPM_MIC("Sub Mic", NULL),
107         SND_SOC_DAPM_MIC("Headset Mic", NULL),
108         SND_SOC_DAPM_MIC("Carkit Mic", NULL),
109         SND_SOC_DAPM_MIC("Digital0 Mic", NULL),
110         SND_SOC_DAPM_MIC("Digital1 Mic", NULL),
111         SND_SOC_DAPM_LINE("Line In", NULL),
112 };
113 
114 static const struct snd_soc_dapm_route audio_map[] = {
115         /* Headset Stereophone:  HSOL, HSOR */
116         {"Headset Stereophone", NULL, "HSOL"},
117         {"Headset Stereophone", NULL, "HSOR"},
118         /* External Speakers: HFL, HFR */
119         {"Handsfree Spk", NULL, "HFL"},
120         {"Handsfree Spk", NULL, "HFR"},
121         /* External Speakers: PredrivL, PredrivR */
122         {"Ext Spk", NULL, "PREDRIVEL"},
123         {"Ext Spk", NULL, "PREDRIVER"},
124         /* Carkit speakers:  CARKITL, CARKITR */
125         {"Carkit Spk", NULL, "CARKITL"},
126         {"Carkit Spk", NULL, "CARKITR"},
127         /* Earpiece */
128         {"Earpiece Spk", NULL, "EARPIECE"},
129 
130         /* External Mics: MAINMIC, SUBMIC with bias */
131         {"MAINMIC", NULL, "Main Mic"},
132         {"Main Mic", NULL, "Mic Bias 1"},
133         {"SUBMIC", NULL, "Sub Mic"},
134         {"Sub Mic", NULL, "Mic Bias 2"},
135         /* Headset Mic: HSMIC with bias */
136         {"HSMIC", NULL, "Headset Mic"},
137         {"Headset Mic", NULL, "Headset Mic Bias"},
138         /* Digital Mics: DIGIMIC0, DIGIMIC1 with bias */
139         {"DIGIMIC0", NULL, "Digital0 Mic"},
140         {"Digital0 Mic", NULL, "Mic Bias 1"},
141         {"DIGIMIC1", NULL, "Digital1 Mic"},
142         {"Digital1 Mic", NULL, "Mic Bias 2"},
143         /* Carkit In: CARKITMIC */
144         {"CARKITMIC", NULL, "Carkit Mic"},
145         /* Aux In: AUXL, AUXR */
146         {"AUXL", NULL, "Line In"},
147         {"AUXR", NULL, "Line In"},
148 };
149 
150 /* Headset jack detection DAPM pins */
151 static struct snd_soc_jack_pin hs_jack_pins[] = {
152         {
153                 .pin = "Headset Mic",
154                 .mask = SND_JACK_MICROPHONE,
155         },
156         {
157                 .pin = "Headset Stereophone",
158                 .mask = SND_JACK_HEADPHONE,
159         },
160 };
161 
162 /* Headset jack detection gpios */
163 static struct snd_soc_jack_gpio hs_jack_gpios[] = {
164         {
165                 .name = "hsdet-gpio",
166                 .report = SND_JACK_HEADSET,
167                 .debounce_time = 200,
168         },
169 };
170 
171 static inline void twl4030_disconnect_pin(struct snd_soc_dapm_context *dapm,
172                                           int connected, char *pin)
173 {
174         if (!connected)
175                 snd_soc_dapm_disable_pin(dapm, pin);
176 }
177 
178 static int omap_twl4030_init(struct snd_soc_pcm_runtime *rtd)
179 {
180         struct snd_soc_codec *codec = rtd->codec;
181         struct snd_soc_card *card = rtd->card;
182         struct snd_soc_dapm_context *dapm = &codec->dapm;
183         struct omap_tw4030_pdata *pdata = dev_get_platdata(card->dev);
184         struct omap_twl4030 *priv = snd_soc_card_get_drvdata(card);
185         int ret = 0;
186 
187         /* Headset jack detection only if it is supported */
188         if (priv->jack_detect > 0) {
189                 hs_jack_gpios[0].gpio = priv->jack_detect;
190 
191                 ret = snd_soc_jack_new(codec, "Headset Jack", SND_JACK_HEADSET,
192                                        &priv->hs_jack);
193                 if (ret)
194                         return ret;
195 
196                 ret = snd_soc_jack_add_pins(&priv->hs_jack,
197                                             ARRAY_SIZE(hs_jack_pins),
198                                             hs_jack_pins);
199                 if (ret)
200                         return ret;
201 
202                 ret = snd_soc_jack_add_gpios(&priv->hs_jack,
203                                              ARRAY_SIZE(hs_jack_gpios),
204                                              hs_jack_gpios);
205                 if (ret)
206                         return ret;
207         }
208 
209         /*
210          * NULL pdata means we booted with DT. In this case the routing is
211          * provided and the card is fully routed, no need to mark pins.
212          */
213         if (!pdata || !pdata->custom_routing)
214                 return ret;
215 
216         /* Disable not connected paths if not used */
217         twl4030_disconnect_pin(dapm, pdata->has_ear, "Earpiece Spk");
218         twl4030_disconnect_pin(dapm, pdata->has_hf, "Handsfree Spk");
219         twl4030_disconnect_pin(dapm, pdata->has_hs, "Headset Stereophone");
220         twl4030_disconnect_pin(dapm, pdata->has_predriv, "Ext Spk");
221         twl4030_disconnect_pin(dapm, pdata->has_carkit, "Carkit Spk");
222 
223         twl4030_disconnect_pin(dapm, pdata->has_mainmic, "Main Mic");
224         twl4030_disconnect_pin(dapm, pdata->has_submic, "Sub Mic");
225         twl4030_disconnect_pin(dapm, pdata->has_hsmic, "Headset Mic");
226         twl4030_disconnect_pin(dapm, pdata->has_carkitmic, "Carkit Mic");
227         twl4030_disconnect_pin(dapm, pdata->has_digimic0, "Digital0 Mic");
228         twl4030_disconnect_pin(dapm, pdata->has_digimic1, "Digital1 Mic");
229         twl4030_disconnect_pin(dapm, pdata->has_linein, "Line In");
230 
231         return ret;
232 }
233 
234 static int omap_twl4030_card_remove(struct snd_soc_card *card)
235 {
236         struct omap_twl4030 *priv = snd_soc_card_get_drvdata(card);
237 
238         if (priv->jack_detect > 0)
239                 snd_soc_jack_free_gpios(&priv->hs_jack,
240                                         ARRAY_SIZE(hs_jack_gpios),
241                                         hs_jack_gpios);
242 
243         return 0;
244 }
245 
246 /* Digital audio interface glue - connects codec <--> CPU */
247 static struct snd_soc_dai_link omap_twl4030_dai_links[] = {
248         {
249                 .name = "TWL4030 HiFi",
250                 .stream_name = "TWL4030 HiFi",
251                 .cpu_dai_name = "omap-mcbsp.2",
252                 .codec_dai_name = "twl4030-hifi",
253                 .platform_name = "omap-mcbsp.2",
254                 .codec_name = "twl4030-codec",
255                 .init = omap_twl4030_init,
256                 .ops = &omap_twl4030_ops,
257         },
258         {
259                 .name = "TWL4030 Voice",
260                 .stream_name = "TWL4030 Voice",
261                 .cpu_dai_name = "omap-mcbsp.3",
262                 .codec_dai_name = "twl4030-voice",
263                 .platform_name = "omap-mcbsp.3",
264                 .codec_name = "twl4030-codec",
265                 .dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
266                            SND_SOC_DAIFMT_CBM_CFM,
267         },
268 };
269 
270 /* Audio machine driver */
271 static struct snd_soc_card omap_twl4030_card = {
272         .owner = THIS_MODULE,
273         .remove = omap_twl4030_card_remove,
274         .dai_link = omap_twl4030_dai_links,
275         .num_links = ARRAY_SIZE(omap_twl4030_dai_links),
276 
277         .dapm_widgets = dapm_widgets,
278         .num_dapm_widgets = ARRAY_SIZE(dapm_widgets),
279         .dapm_routes = audio_map,
280         .num_dapm_routes = ARRAY_SIZE(audio_map),
281 };
282 
283 static int omap_twl4030_probe(struct platform_device *pdev)
284 {
285         struct omap_tw4030_pdata *pdata = dev_get_platdata(&pdev->dev);
286         struct device_node *node = pdev->dev.of_node;
287         struct snd_soc_card *card = &omap_twl4030_card;
288         struct omap_twl4030 *priv;
289         int ret = 0;
290 
291         card->dev = &pdev->dev;
292 
293         priv = devm_kzalloc(&pdev->dev, sizeof(struct omap_twl4030), GFP_KERNEL);
294         if (priv == NULL)
295                 return -ENOMEM;
296 
297         if (node) {
298                 struct device_node *dai_node;
299                 struct property *prop;
300 
301                 if (snd_soc_of_parse_card_name(card, "ti,model")) {
302                         dev_err(&pdev->dev, "Card name is not provided\n");
303                         return -ENODEV;
304                 }
305 
306                 dai_node = of_parse_phandle(node, "ti,mcbsp", 0);
307                 if (!dai_node) {
308                         dev_err(&pdev->dev, "McBSP node is not provided\n");
309                         return -EINVAL;
310                 }
311                 omap_twl4030_dai_links[0].cpu_dai_name  = NULL;
312                 omap_twl4030_dai_links[0].cpu_of_node = dai_node;
313 
314                 omap_twl4030_dai_links[0].platform_name  = NULL;
315                 omap_twl4030_dai_links[0].platform_of_node = dai_node;
316 
317                 dai_node = of_parse_phandle(node, "ti,mcbsp-voice", 0);
318                 if (!dai_node) {
319                         card->num_links = 1;
320                 } else {
321                         omap_twl4030_dai_links[1].cpu_dai_name  = NULL;
322                         omap_twl4030_dai_links[1].cpu_of_node = dai_node;
323 
324                         omap_twl4030_dai_links[1].platform_name  = NULL;
325                         omap_twl4030_dai_links[1].platform_of_node = dai_node;
326                 }
327 
328                 priv->jack_detect = of_get_named_gpio(node,
329                                                       "ti,jack-det-gpio", 0);
330 
331                 /* Optional: audio routing can be provided */
332                 prop = of_find_property(node, "ti,audio-routing", NULL);
333                 if (prop) {
334                         ret = snd_soc_of_parse_audio_routing(card,
335                                                             "ti,audio-routing");
336                         if (ret)
337                                 return ret;
338 
339                         card->fully_routed = 1;
340                 }
341         } else if (pdata) {
342                 if (pdata->card_name) {
343                         card->name = pdata->card_name;
344                 } else {
345                         dev_err(&pdev->dev, "Card name is not provided\n");
346                         return -ENODEV;
347                 }
348 
349                 if (!pdata->voice_connected)
350                         card->num_links = 1;
351 
352                 priv->jack_detect = pdata->jack_detect;
353         } else {
354                 dev_err(&pdev->dev, "Missing pdata\n");
355                 return -ENODEV;
356         }
357 
358         snd_soc_card_set_drvdata(card, priv);
359         ret = devm_snd_soc_register_card(&pdev->dev, card);
360         if (ret) {
361                 dev_err(&pdev->dev, "devm_snd_soc_register_card() failed: %d\n",
362                         ret);
363                 return ret;
364         }
365 
366         return 0;
367 }
368 
369 static const struct of_device_id omap_twl4030_of_match[] = {
370         {.compatible = "ti,omap-twl4030", },
371         { },
372 };
373 MODULE_DEVICE_TABLE(of, omap_twl4030_of_match);
374 
375 static struct platform_driver omap_twl4030_driver = {
376         .driver = {
377                 .name = "omap-twl4030",
378                 .owner = THIS_MODULE,
379                 .pm = &snd_soc_pm_ops,
380                 .of_match_table = omap_twl4030_of_match,
381         },
382         .probe = omap_twl4030_probe,
383 };
384 
385 module_platform_driver(omap_twl4030_driver);
386 
387 MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
388 MODULE_DESCRIPTION("ALSA SoC for TI SoC based boards with twl4030 codec");
389 MODULE_LICENSE("GPL");
390 MODULE_ALIAS("platform:omap-twl4030");
391 

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