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

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