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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         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 
 76 static struct snd_soc_ops omap_twl4030_ops = {
 77         .hw_params = omap_twl4030_hw_params,
 78 };
 79 
 80 static 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 
 96 static 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 */
133 static 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 */
145 static 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 
153 static 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 
160 static int omap_twl4030_init(struct snd_soc_pcm_runtime *rtd)
161 {
162         struct snd_soc_card *card = rtd->card;
163         struct snd_soc_dapm_context *dapm = &card->dapm;
164         struct omap_tw4030_pdata *pdata = dev_get_platdata(card->dev);
165         struct omap_twl4030 *priv = snd_soc_card_get_drvdata(card);
166         int ret = 0;
167 
168         /* Headset jack detection only if it is supported */
169         if (priv->jack_detect > 0) {
170                 hs_jack_gpios[0].gpio = priv->jack_detect;
171 
172                 ret = snd_soc_card_jack_new(rtd->card, "Headset Jack",
173                                             SND_JACK_HEADSET, &priv->hs_jack,
174                                             hs_jack_pins,
175                                             ARRAY_SIZE(hs_jack_pins));
176                 if (ret)
177                         return ret;
178 
179                 ret = snd_soc_jack_add_gpios(&priv->hs_jack,
180                                              ARRAY_SIZE(hs_jack_gpios),
181                                              hs_jack_gpios);
182                 if (ret)
183                         return ret;
184         }
185 
186         /*
187          * NULL pdata means we booted with DT. In this case the routing is
188          * provided and the card is fully routed, no need to mark pins.
189          */
190         if (!pdata || !pdata->custom_routing)
191                 return ret;
192 
193         /* Disable not connected paths if not used */
194         twl4030_disconnect_pin(dapm, pdata->has_ear, "Earpiece Spk");
195         twl4030_disconnect_pin(dapm, pdata->has_hf, "Handsfree Spk");
196         twl4030_disconnect_pin(dapm, pdata->has_hs, "Headset Stereophone");
197         twl4030_disconnect_pin(dapm, pdata->has_predriv, "Ext Spk");
198         twl4030_disconnect_pin(dapm, pdata->has_carkit, "Carkit Spk");
199 
200         twl4030_disconnect_pin(dapm, pdata->has_mainmic, "Main Mic");
201         twl4030_disconnect_pin(dapm, pdata->has_submic, "Sub Mic");
202         twl4030_disconnect_pin(dapm, pdata->has_hsmic, "Headset Mic");
203         twl4030_disconnect_pin(dapm, pdata->has_carkitmic, "Carkit Mic");
204         twl4030_disconnect_pin(dapm, pdata->has_digimic0, "Digital0 Mic");
205         twl4030_disconnect_pin(dapm, pdata->has_digimic1, "Digital1 Mic");
206         twl4030_disconnect_pin(dapm, pdata->has_linein, "Line In");
207 
208         return ret;
209 }
210 
211 static int omap_twl4030_card_remove(struct snd_soc_card *card)
212 {
213         struct omap_twl4030 *priv = snd_soc_card_get_drvdata(card);
214 
215         if (priv->jack_detect > 0)
216                 snd_soc_jack_free_gpios(&priv->hs_jack,
217                                         ARRAY_SIZE(hs_jack_gpios),
218                                         hs_jack_gpios);
219 
220         return 0;
221 }
222 
223 /* Digital audio interface glue - connects codec <--> CPU */
224 static struct snd_soc_dai_link omap_twl4030_dai_links[] = {
225         {
226                 .name = "TWL4030 HiFi",
227                 .stream_name = "TWL4030 HiFi",
228                 .cpu_dai_name = "omap-mcbsp.2",
229                 .codec_dai_name = "twl4030-hifi",
230                 .platform_name = "omap-mcbsp.2",
231                 .codec_name = "twl4030-codec",
232                 .init = omap_twl4030_init,
233                 .ops = &omap_twl4030_ops,
234         },
235         {
236                 .name = "TWL4030 Voice",
237                 .stream_name = "TWL4030 Voice",
238                 .cpu_dai_name = "omap-mcbsp.3",
239                 .codec_dai_name = "twl4030-voice",
240                 .platform_name = "omap-mcbsp.3",
241                 .codec_name = "twl4030-codec",
242                 .dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
243                            SND_SOC_DAIFMT_CBM_CFM,
244         },
245 };
246 
247 /* Audio machine driver */
248 static struct snd_soc_card omap_twl4030_card = {
249         .owner = THIS_MODULE,
250         .remove = omap_twl4030_card_remove,
251         .dai_link = omap_twl4030_dai_links,
252         .num_links = ARRAY_SIZE(omap_twl4030_dai_links),
253 
254         .dapm_widgets = dapm_widgets,
255         .num_dapm_widgets = ARRAY_SIZE(dapm_widgets),
256         .dapm_routes = audio_map,
257         .num_dapm_routes = ARRAY_SIZE(audio_map),
258 };
259 
260 static int omap_twl4030_probe(struct platform_device *pdev)
261 {
262         struct omap_tw4030_pdata *pdata = dev_get_platdata(&pdev->dev);
263         struct device_node *node = pdev->dev.of_node;
264         struct snd_soc_card *card = &omap_twl4030_card;
265         struct omap_twl4030 *priv;
266         int ret = 0;
267 
268         card->dev = &pdev->dev;
269 
270         priv = devm_kzalloc(&pdev->dev, sizeof(struct omap_twl4030), GFP_KERNEL);
271         if (priv == NULL)
272                 return -ENOMEM;
273 
274         if (node) {
275                 struct device_node *dai_node;
276                 struct property *prop;
277 
278                 if (snd_soc_of_parse_card_name(card, "ti,model")) {
279                         dev_err(&pdev->dev, "Card name is not provided\n");
280                         return -ENODEV;
281                 }
282 
283                 dai_node = of_parse_phandle(node, "ti,mcbsp", 0);
284                 if (!dai_node) {
285                         dev_err(&pdev->dev, "McBSP node is not provided\n");
286                         return -EINVAL;
287                 }
288                 omap_twl4030_dai_links[0].cpu_dai_name  = NULL;
289                 omap_twl4030_dai_links[0].cpu_of_node = dai_node;
290 
291                 omap_twl4030_dai_links[0].platform_name  = NULL;
292                 omap_twl4030_dai_links[0].platform_of_node = dai_node;
293 
294                 dai_node = of_parse_phandle(node, "ti,mcbsp-voice", 0);
295                 if (!dai_node) {
296                         card->num_links = 1;
297                 } else {
298                         omap_twl4030_dai_links[1].cpu_dai_name  = NULL;
299                         omap_twl4030_dai_links[1].cpu_of_node = dai_node;
300 
301                         omap_twl4030_dai_links[1].platform_name  = NULL;
302                         omap_twl4030_dai_links[1].platform_of_node = dai_node;
303                 }
304 
305                 priv->jack_detect = of_get_named_gpio(node,
306                                                       "ti,jack-det-gpio", 0);
307 
308                 /* Optional: audio routing can be provided */
309                 prop = of_find_property(node, "ti,audio-routing", NULL);
310                 if (prop) {
311                         ret = snd_soc_of_parse_audio_routing(card,
312                                                             "ti,audio-routing");
313                         if (ret)
314                                 return ret;
315 
316                         card->fully_routed = 1;
317                 }
318         } else if (pdata) {
319                 if (pdata->card_name) {
320                         card->name = pdata->card_name;
321                 } else {
322                         dev_err(&pdev->dev, "Card name is not provided\n");
323                         return -ENODEV;
324                 }
325 
326                 if (!pdata->voice_connected)
327                         card->num_links = 1;
328 
329                 priv->jack_detect = pdata->jack_detect;
330         } else {
331                 dev_err(&pdev->dev, "Missing pdata\n");
332                 return -ENODEV;
333         }
334 
335         snd_soc_card_set_drvdata(card, priv);
336         ret = devm_snd_soc_register_card(&pdev->dev, card);
337         if (ret) {
338                 dev_err(&pdev->dev, "devm_snd_soc_register_card() failed: %d\n",
339                         ret);
340                 return ret;
341         }
342 
343         return 0;
344 }
345 
346 static const struct of_device_id omap_twl4030_of_match[] = {
347         {.compatible = "ti,omap-twl4030", },
348         { },
349 };
350 MODULE_DEVICE_TABLE(of, omap_twl4030_of_match);
351 
352 static struct platform_driver omap_twl4030_driver = {
353         .driver = {
354                 .name = "omap-twl4030",
355                 .pm = &snd_soc_pm_ops,
356                 .of_match_table = omap_twl4030_of_match,
357         },
358         .probe = omap_twl4030_probe,
359 };
360 
361 module_platform_driver(omap_twl4030_driver);
362 
363 MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
364 MODULE_DESCRIPTION("ALSA SoC for TI SoC based boards with twl4030 codec");
365 MODULE_LICENSE("GPL");
366 MODULE_ALIAS("platform:omap-twl4030");
367 

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