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Linux/sound/soc/omap/omap-abe-twl6040.c

  1 /*
  2  * omap-abe-twl6040.c  --  SoC audio for TI OMAP based boards with ABE and
  3  *                         twl6040 codec
  4  *
  5  * Author: Misael Lopez Cruz <misael.lopez@ti.com>
  6  *
  7  * This program is free software; you can redistribute it and/or
  8  * modify it under the terms of the GNU General Public License
  9  * version 2 as published by the Free Software Foundation.
 10  *
 11  * This program is distributed in the hope that it will be useful, but
 12  * WITHOUT ANY WARRANTY; without even the implied warranty of
 13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 14  * General Public License for more details.
 15  *
 16  * You should have received a copy of the GNU General Public License
 17  * along with this program; if not, write to the Free Software
 18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 19  * 02110-1301 USA
 20  *
 21  */
 22 
 23 #include <linux/clk.h>
 24 #include <linux/platform_device.h>
 25 #include <linux/mfd/twl6040.h>
 26 #include <linux/module.h>
 27 #include <linux/of.h>
 28 
 29 #include <sound/core.h>
 30 #include <sound/pcm.h>
 31 #include <sound/soc.h>
 32 #include <sound/jack.h>
 33 
 34 #include "omap-dmic.h"
 35 #include "omap-mcpdm.h"
 36 #include "../codecs/twl6040.h"
 37 
 38 struct abe_twl6040 {
 39         int     jack_detection; /* board can detect jack events */
 40         int     mclk_freq;      /* MCLK frequency speed for twl6040 */
 41 
 42         struct platform_device *dmic_codec_dev;
 43 };
 44 
 45 static int omap_abe_hw_params(struct snd_pcm_substream *substream,
 46         struct snd_pcm_hw_params *params)
 47 {
 48         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 49         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 50         struct snd_soc_codec *codec = rtd->codec;
 51         struct snd_soc_card *card = codec->card;
 52         struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
 53         int clk_id, freq;
 54         int ret;
 55 
 56         clk_id = twl6040_get_clk_id(rtd->codec);
 57         if (clk_id == TWL6040_SYSCLK_SEL_HPPLL)
 58                 freq = priv->mclk_freq;
 59         else if (clk_id == TWL6040_SYSCLK_SEL_LPPLL)
 60                 freq = 32768;
 61         else
 62                 return -EINVAL;
 63 
 64         /* set the codec mclk */
 65         ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, freq,
 66                                 SND_SOC_CLOCK_IN);
 67         if (ret) {
 68                 printk(KERN_ERR "can't set codec system clock\n");
 69                 return ret;
 70         }
 71         return ret;
 72 }
 73 
 74 static struct snd_soc_ops omap_abe_ops = {
 75         .hw_params = omap_abe_hw_params,
 76 };
 77 
 78 static int omap_abe_dmic_hw_params(struct snd_pcm_substream *substream,
 79         struct snd_pcm_hw_params *params)
 80 {
 81         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 82         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 83         int ret = 0;
 84 
 85         ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_SYSCLK_PAD_CLKS,
 86                                      19200000, SND_SOC_CLOCK_IN);
 87         if (ret < 0) {
 88                 printk(KERN_ERR "can't set DMIC cpu system clock\n");
 89                 return ret;
 90         }
 91         ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_ABE_DMIC_CLK, 2400000,
 92                                      SND_SOC_CLOCK_OUT);
 93         if (ret < 0) {
 94                 printk(KERN_ERR "can't set DMIC output clock\n");
 95                 return ret;
 96         }
 97         return 0;
 98 }
 99 
100 static struct snd_soc_ops omap_abe_dmic_ops = {
101         .hw_params = omap_abe_dmic_hw_params,
102 };
103 
104 /* Headset jack */
105 static struct snd_soc_jack hs_jack;
106 
107 /*Headset jack detection DAPM pins */
108 static struct snd_soc_jack_pin hs_jack_pins[] = {
109         {
110                 .pin = "Headset Mic",
111                 .mask = SND_JACK_MICROPHONE,
112         },
113         {
114                 .pin = "Headset Stereophone",
115                 .mask = SND_JACK_HEADPHONE,
116         },
117 };
118 
119 /* SDP4430 machine DAPM */
120 static const struct snd_soc_dapm_widget twl6040_dapm_widgets[] = {
121         /* Outputs */
122         SND_SOC_DAPM_HP("Headset Stereophone", NULL),
123         SND_SOC_DAPM_SPK("Earphone Spk", NULL),
124         SND_SOC_DAPM_SPK("Ext Spk", NULL),
125         SND_SOC_DAPM_LINE("Line Out", NULL),
126         SND_SOC_DAPM_SPK("Vibrator", NULL),
127 
128         /* Inputs */
129         SND_SOC_DAPM_MIC("Headset Mic", NULL),
130         SND_SOC_DAPM_MIC("Main Handset Mic", NULL),
131         SND_SOC_DAPM_MIC("Sub Handset Mic", NULL),
132         SND_SOC_DAPM_LINE("Line In", NULL),
133 
134         /* Digital microphones */
135         SND_SOC_DAPM_MIC("Digital Mic", NULL),
136 };
137 
138 static const struct snd_soc_dapm_route audio_map[] = {
139         /* Routings for outputs */
140         {"Headset Stereophone", NULL, "HSOL"},
141         {"Headset Stereophone", NULL, "HSOR"},
142 
143         {"Earphone Spk", NULL, "EP"},
144 
145         {"Ext Spk", NULL, "HFL"},
146         {"Ext Spk", NULL, "HFR"},
147 
148         {"Line Out", NULL, "AUXL"},
149         {"Line Out", NULL, "AUXR"},
150 
151         {"Vibrator", NULL, "VIBRAL"},
152         {"Vibrator", NULL, "VIBRAR"},
153 
154         /* Routings for inputs */
155         {"HSMIC", NULL, "Headset Mic"},
156         {"Headset Mic", NULL, "Headset Mic Bias"},
157 
158         {"MAINMIC", NULL, "Main Handset Mic"},
159         {"Main Handset Mic", NULL, "Main Mic Bias"},
160 
161         {"SUBMIC", NULL, "Sub Handset Mic"},
162         {"Sub Handset Mic", NULL, "Main Mic Bias"},
163 
164         {"AFML", NULL, "Line In"},
165         {"AFMR", NULL, "Line In"},
166 };
167 
168 static int omap_abe_twl6040_init(struct snd_soc_pcm_runtime *rtd)
169 {
170         struct snd_soc_codec *codec = rtd->codec;
171         struct snd_soc_card *card = codec->card;
172         struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
173         int hs_trim;
174         int ret = 0;
175 
176         /*
177          * Configure McPDM offset cancellation based on the HSOTRIM value from
178          * twl6040.
179          */
180         hs_trim = twl6040_get_trim_value(codec, TWL6040_TRIM_HSOTRIM);
181         omap_mcpdm_configure_dn_offsets(rtd, TWL6040_HSF_TRIM_LEFT(hs_trim),
182                                         TWL6040_HSF_TRIM_RIGHT(hs_trim));
183 
184         /* Headset jack detection only if it is supported */
185         if (priv->jack_detection) {
186                 ret = snd_soc_jack_new(codec, "Headset Jack",
187                                         SND_JACK_HEADSET, &hs_jack);
188                 if (ret)
189                         return ret;
190 
191                 ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
192                                         hs_jack_pins);
193                 twl6040_hs_jack_detect(codec, &hs_jack, SND_JACK_HEADSET);
194         }
195 
196         return ret;
197 }
198 
199 static const struct snd_soc_dapm_route dmic_audio_map[] = {
200         {"DMic", NULL, "Digital Mic"},
201         {"Digital Mic", NULL, "Digital Mic1 Bias"},
202 };
203 
204 static int omap_abe_dmic_init(struct snd_soc_pcm_runtime *rtd)
205 {
206         struct snd_soc_dapm_context *dapm = &rtd->card->dapm;
207 
208         return snd_soc_dapm_add_routes(dapm, dmic_audio_map,
209                                 ARRAY_SIZE(dmic_audio_map));
210 }
211 
212 /* Digital audio interface glue - connects codec <--> CPU */
213 static struct snd_soc_dai_link abe_twl6040_dai_links[] = {
214         {
215                 .name = "TWL6040",
216                 .stream_name = "TWL6040",
217                 .cpu_dai_name = "omap-mcpdm",
218                 .codec_dai_name = "twl6040-legacy",
219                 .platform_name = "omap-pcm-audio",
220                 .codec_name = "twl6040-codec",
221                 .init = omap_abe_twl6040_init,
222                 .ops = &omap_abe_ops,
223         },
224         {
225                 .name = "DMIC",
226                 .stream_name = "DMIC Capture",
227                 .cpu_dai_name = "omap-dmic",
228                 .codec_dai_name = "dmic-hifi",
229                 .platform_name = "omap-pcm-audio",
230                 .codec_name = "dmic-codec",
231                 .init = omap_abe_dmic_init,
232                 .ops = &omap_abe_dmic_ops,
233         },
234 };
235 
236 /* Audio machine driver */
237 static struct snd_soc_card omap_abe_card = {
238         .owner = THIS_MODULE,
239 
240         .dapm_widgets = twl6040_dapm_widgets,
241         .num_dapm_widgets = ARRAY_SIZE(twl6040_dapm_widgets),
242         .dapm_routes = audio_map,
243         .num_dapm_routes = ARRAY_SIZE(audio_map),
244 };
245 
246 static int omap_abe_probe(struct platform_device *pdev)
247 {
248         struct device_node *node = pdev->dev.of_node;
249         struct snd_soc_card *card = &omap_abe_card;
250         struct device_node *dai_node;
251         struct abe_twl6040 *priv;
252         int num_links = 0;
253         int ret = 0;
254 
255         if (!node) {
256                 dev_err(&pdev->dev, "of node is missing.\n");
257                 return -ENODEV;
258         }
259 
260         card->dev = &pdev->dev;
261 
262         priv = devm_kzalloc(&pdev->dev, sizeof(struct abe_twl6040), GFP_KERNEL);
263         if (priv == NULL)
264                 return -ENOMEM;
265 
266         priv->dmic_codec_dev = ERR_PTR(-EINVAL);
267 
268         if (snd_soc_of_parse_card_name(card, "ti,model")) {
269                 dev_err(&pdev->dev, "Card name is not provided\n");
270                 return -ENODEV;
271         }
272 
273         ret = snd_soc_of_parse_audio_routing(card, "ti,audio-routing");
274         if (ret) {
275                 dev_err(&pdev->dev, "Error while parsing DAPM routing\n");
276                 return ret;
277         }
278 
279         dai_node = of_parse_phandle(node, "ti,mcpdm", 0);
280         if (!dai_node) {
281                 dev_err(&pdev->dev, "McPDM node is not provided\n");
282                 return -EINVAL;
283         }
284         abe_twl6040_dai_links[0].cpu_dai_name  = NULL;
285         abe_twl6040_dai_links[0].cpu_of_node = dai_node;
286 
287         dai_node = of_parse_phandle(node, "ti,dmic", 0);
288         if (dai_node) {
289                 num_links = 2;
290                 abe_twl6040_dai_links[1].cpu_dai_name  = NULL;
291                 abe_twl6040_dai_links[1].cpu_of_node = dai_node;
292 
293                 priv->dmic_codec_dev = platform_device_register_simple(
294                                                 "dmic-codec", -1, NULL, 0);
295                 if (IS_ERR(priv->dmic_codec_dev)) {
296                         dev_err(&pdev->dev, "Can't instantiate dmic-codec\n");
297                         return PTR_ERR(priv->dmic_codec_dev);
298                 }
299         } else {
300                 num_links = 1;
301         }
302 
303         priv->jack_detection = of_property_read_bool(node, "ti,jack-detection");
304         of_property_read_u32(node, "ti,mclk-freq", &priv->mclk_freq);
305         if (!priv->mclk_freq) {
306                 dev_err(&pdev->dev, "MCLK frequency not provided\n");
307                 ret = -EINVAL;
308                 goto err_unregister;
309         }
310 
311         card->fully_routed = 1;
312 
313         if (!priv->mclk_freq) {
314                 dev_err(&pdev->dev, "MCLK frequency missing\n");
315                 ret = -ENODEV;
316                 goto err_unregister;
317         }
318 
319         card->dai_link = abe_twl6040_dai_links;
320         card->num_links = num_links;
321 
322         snd_soc_card_set_drvdata(card, priv);
323 
324         ret = snd_soc_register_card(card);
325         if (ret) {
326                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
327                         ret);
328                 goto err_unregister;
329         }
330 
331         return 0;
332 
333 err_unregister:
334         if (!IS_ERR(priv->dmic_codec_dev))
335                 platform_device_unregister(priv->dmic_codec_dev);
336 
337         return ret;
338 }
339 
340 static int omap_abe_remove(struct platform_device *pdev)
341 {
342         struct snd_soc_card *card = platform_get_drvdata(pdev);
343         struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
344 
345         snd_soc_unregister_card(card);
346 
347         if (!IS_ERR(priv->dmic_codec_dev))
348                 platform_device_unregister(priv->dmic_codec_dev);
349 
350         return 0;
351 }
352 
353 static const struct of_device_id omap_abe_of_match[] = {
354         {.compatible = "ti,abe-twl6040", },
355         { },
356 };
357 MODULE_DEVICE_TABLE(of, omap_abe_of_match);
358 
359 static struct platform_driver omap_abe_driver = {
360         .driver = {
361                 .name = "omap-abe-twl6040",
362                 .owner = THIS_MODULE,
363                 .pm = &snd_soc_pm_ops,
364                 .of_match_table = omap_abe_of_match,
365         },
366         .probe = omap_abe_probe,
367         .remove = omap_abe_remove,
368 };
369 
370 module_platform_driver(omap_abe_driver);
371 
372 MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>");
373 MODULE_DESCRIPTION("ALSA SoC for OMAP boards with ABE and twl6040 codec");
374 MODULE_LICENSE("GPL");
375 MODULE_ALIAS("platform:omap-abe-twl6040");
376 

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