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/platform_data/omap-abe-twl6040.h>
27 #include <linux/module.h>
28 #include <linux/of.h>
29
30 #include <sound/core.h>
31 #include <sound/pcm.h>
32 #include <sound/soc.h>
33 #include <sound/jack.h>
34
35 #include "omap-dmic.h"
36 #include "omap-mcpdm.h"
37 #include "../codecs/twl6040.h"
38
39 struct abe_twl6040 {
40 int jack_detection; /* board can detect jack events */
41 int mclk_freq; /* MCLK frequency speed for twl6040 */
42
43 struct platform_device *dmic_codec_dev;
44 };
45
46 static int omap_abe_hw_params(struct snd_pcm_substream *substream,
47 struct snd_pcm_hw_params *params)
48 {
49 struct snd_soc_pcm_runtime *rtd = substream->private_data;
50 struct snd_soc_dai *codec_dai = rtd->codec_dai;
51 struct snd_soc_codec *codec = rtd->codec;
52 struct snd_soc_card *card = codec->card;
53 struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
54 int clk_id, freq;
55 int ret;
56
57 clk_id = twl6040_get_clk_id(rtd->codec);
58 if (clk_id == TWL6040_SYSCLK_SEL_HPPLL)
59 freq = priv->mclk_freq;
60 else if (clk_id == TWL6040_SYSCLK_SEL_LPPLL)
61 freq = 32768;
62 else
63 return -EINVAL;
64
65 /* set the codec mclk */
66 ret = snd_soc_dai_set_sysclk(codec_dai, clk_id, freq,
67 SND_SOC_CLOCK_IN);
68 if (ret) {
69 printk(KERN_ERR "can't set codec system clock\n");
70 return ret;
71 }
72 return ret;
73 }
74
75 static struct snd_soc_ops omap_abe_ops = {
76 .hw_params = omap_abe_hw_params,
77 };
78
79 static int omap_abe_dmic_hw_params(struct snd_pcm_substream *substream,
80 struct snd_pcm_hw_params *params)
81 {
82 struct snd_soc_pcm_runtime *rtd = substream->private_data;
83 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
84 int ret = 0;
85
86 ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_SYSCLK_PAD_CLKS,
87 19200000, SND_SOC_CLOCK_IN);
88 if (ret < 0) {
89 printk(KERN_ERR "can't set DMIC cpu system clock\n");
90 return ret;
91 }
92 ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_DMIC_ABE_DMIC_CLK, 2400000,
93 SND_SOC_CLOCK_OUT);
94 if (ret < 0) {
95 printk(KERN_ERR "can't set DMIC output clock\n");
96 return ret;
97 }
98 return 0;
99 }
100
101 static struct snd_soc_ops omap_abe_dmic_ops = {
102 .hw_params = omap_abe_dmic_hw_params,
103 };
104
105 /* Headset jack */
106 static struct snd_soc_jack hs_jack;
107
108 /*Headset jack detection DAPM pins */
109 static struct snd_soc_jack_pin hs_jack_pins[] = {
110 {
111 .pin = "Headset Mic",
112 .mask = SND_JACK_MICROPHONE,
113 },
114 {
115 .pin = "Headset Stereophone",
116 .mask = SND_JACK_HEADPHONE,
117 },
118 };
119
120 /* SDP4430 machine DAPM */
121 static const struct snd_soc_dapm_widget twl6040_dapm_widgets[] = {
122 /* Outputs */
123 SND_SOC_DAPM_HP("Headset Stereophone", NULL),
124 SND_SOC_DAPM_SPK("Earphone Spk", NULL),
125 SND_SOC_DAPM_SPK("Ext Spk", NULL),
126 SND_SOC_DAPM_LINE("Line Out", NULL),
127 SND_SOC_DAPM_SPK("Vibrator", NULL),
128
129 /* Inputs */
130 SND_SOC_DAPM_MIC("Headset Mic", NULL),
131 SND_SOC_DAPM_MIC("Main Handset Mic", NULL),
132 SND_SOC_DAPM_MIC("Sub Handset Mic", NULL),
133 SND_SOC_DAPM_LINE("Line In", NULL),
134
135 /* Digital microphones */
136 SND_SOC_DAPM_MIC("Digital Mic", NULL),
137 };
138
139 static const struct snd_soc_dapm_route audio_map[] = {
140 /* Routings for outputs */
141 {"Headset Stereophone", NULL, "HSOL"},
142 {"Headset Stereophone", NULL, "HSOR"},
143
144 {"Earphone Spk", NULL, "EP"},
145
146 {"Ext Spk", NULL, "HFL"},
147 {"Ext Spk", NULL, "HFR"},
148
149 {"Line Out", NULL, "AUXL"},
150 {"Line Out", NULL, "AUXR"},
151
152 {"Vibrator", NULL, "VIBRAL"},
153 {"Vibrator", NULL, "VIBRAR"},
154
155 /* Routings for inputs */
156 {"HSMIC", NULL, "Headset Mic"},
157 {"Headset Mic", NULL, "Headset Mic Bias"},
158
159 {"MAINMIC", NULL, "Main Handset Mic"},
160 {"Main Handset Mic", NULL, "Main Mic Bias"},
161
162 {"SUBMIC", NULL, "Sub Handset Mic"},
163 {"Sub Handset Mic", NULL, "Main Mic Bias"},
164
165 {"AFML", NULL, "Line In"},
166 {"AFMR", NULL, "Line In"},
167 };
168
169 static inline void twl6040_disconnect_pin(struct snd_soc_dapm_context *dapm,
170 int connected, char *pin)
171 {
172 if (!connected)
173 snd_soc_dapm_disable_pin(dapm, pin);
174 }
175
176 static int omap_abe_twl6040_init(struct snd_soc_pcm_runtime *rtd)
177 {
178 struct snd_soc_codec *codec = rtd->codec;
179 struct snd_soc_card *card = codec->card;
180 struct snd_soc_dapm_context *dapm = &codec->dapm;
181 struct omap_abe_twl6040_data *pdata = dev_get_platdata(card->dev);
182 struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
183 int hs_trim;
184 int ret = 0;
185
186 /*
187 * Configure McPDM offset cancellation based on the HSOTRIM value from
188 * twl6040.
189 */
190 hs_trim = twl6040_get_trim_value(codec, TWL6040_TRIM_HSOTRIM);
191 omap_mcpdm_configure_dn_offsets(rtd, TWL6040_HSF_TRIM_LEFT(hs_trim),
192 TWL6040_HSF_TRIM_RIGHT(hs_trim));
193
194 /* Headset jack detection only if it is supported */
195 if (priv->jack_detection) {
196 ret = snd_soc_jack_new(codec, "Headset Jack",
197 SND_JACK_HEADSET, &hs_jack);
198 if (ret)
199 return ret;
200
201 ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
202 hs_jack_pins);
203 twl6040_hs_jack_detect(codec, &hs_jack, SND_JACK_HEADSET);
204 }
205
206 /*
207 * NULL pdata means we booted with DT. In this case the routing is
208 * provided and the card is fully routed, no need to mark pins.
209 */
210 if (!pdata)
211 return ret;
212
213 /* Disable not connected paths if not used */
214 twl6040_disconnect_pin(dapm, pdata->has_hs, "Headset Stereophone");
215 twl6040_disconnect_pin(dapm, pdata->has_hf, "Ext Spk");
216 twl6040_disconnect_pin(dapm, pdata->has_ep, "Earphone Spk");
217 twl6040_disconnect_pin(dapm, pdata->has_aux, "Line Out");
218 twl6040_disconnect_pin(dapm, pdata->has_vibra, "Vibrator");
219 twl6040_disconnect_pin(dapm, pdata->has_hsmic, "Headset Mic");
220 twl6040_disconnect_pin(dapm, pdata->has_mainmic, "Main Handset Mic");
221 twl6040_disconnect_pin(dapm, pdata->has_submic, "Sub Handset Mic");
222 twl6040_disconnect_pin(dapm, pdata->has_afm, "Line In");
223
224 return ret;
225 }
226
227 static const struct snd_soc_dapm_route dmic_audio_map[] = {
228 {"DMic", NULL, "Digital Mic"},
229 {"Digital Mic", NULL, "Digital Mic1 Bias"},
230 };
231
232 static int omap_abe_dmic_init(struct snd_soc_pcm_runtime *rtd)
233 {
234 struct snd_soc_codec *codec = rtd->codec;
235 struct snd_soc_dapm_context *dapm = &codec->dapm;
236
237 return snd_soc_dapm_add_routes(dapm, dmic_audio_map,
238 ARRAY_SIZE(dmic_audio_map));
239 }
240
241 /* Digital audio interface glue - connects codec <--> CPU */
242 static struct snd_soc_dai_link abe_twl6040_dai_links[] = {
243 {
244 .name = "TWL6040",
245 .stream_name = "TWL6040",
246 .cpu_dai_name = "omap-mcpdm",
247 .codec_dai_name = "twl6040-legacy",
248 .platform_name = "omap-pcm-audio",
249 .codec_name = "twl6040-codec",
250 .init = omap_abe_twl6040_init,
251 .ops = &omap_abe_ops,
252 },
253 {
254 .name = "DMIC",
255 .stream_name = "DMIC Capture",
256 .cpu_dai_name = "omap-dmic",
257 .codec_dai_name = "dmic-hifi",
258 .platform_name = "omap-pcm-audio",
259 .codec_name = "dmic-codec",
260 .init = omap_abe_dmic_init,
261 .ops = &omap_abe_dmic_ops,
262 },
263 };
264
265 /* Audio machine driver */
266 static struct snd_soc_card omap_abe_card = {
267 .owner = THIS_MODULE,
268
269 .dapm_widgets = twl6040_dapm_widgets,
270 .num_dapm_widgets = ARRAY_SIZE(twl6040_dapm_widgets),
271 .dapm_routes = audio_map,
272 .num_dapm_routes = ARRAY_SIZE(audio_map),
273 };
274
275 static int omap_abe_probe(struct platform_device *pdev)
276 {
277 struct omap_abe_twl6040_data *pdata = dev_get_platdata(&pdev->dev);
278 struct device_node *node = pdev->dev.of_node;
279 struct snd_soc_card *card = &omap_abe_card;
280 struct abe_twl6040 *priv;
281 int num_links = 0;
282 int ret = 0;
283
284 card->dev = &pdev->dev;
285
286 priv = devm_kzalloc(&pdev->dev, sizeof(struct abe_twl6040), GFP_KERNEL);
287 if (priv == NULL)
288 return -ENOMEM;
289
290 priv->dmic_codec_dev = ERR_PTR(-EINVAL);
291
292 if (node) {
293 struct device_node *dai_node;
294
295 if (snd_soc_of_parse_card_name(card, "ti,model")) {
296 dev_err(&pdev->dev, "Card name is not provided\n");
297 return -ENODEV;
298 }
299
300 ret = snd_soc_of_parse_audio_routing(card,
301 "ti,audio-routing");
302 if (ret) {
303 dev_err(&pdev->dev,
304 "Error while parsing DAPM routing\n");
305 return ret;
306 }
307
308 dai_node = of_parse_phandle(node, "ti,mcpdm", 0);
309 if (!dai_node) {
310 dev_err(&pdev->dev, "McPDM node is not provided\n");
311 return -EINVAL;
312 }
313 abe_twl6040_dai_links[0].cpu_dai_name = NULL;
314 abe_twl6040_dai_links[0].cpu_of_node = dai_node;
315
316 dai_node = of_parse_phandle(node, "ti,dmic", 0);
317 if (dai_node) {
318 num_links = 2;
319 abe_twl6040_dai_links[1].cpu_dai_name = NULL;
320 abe_twl6040_dai_links[1].cpu_of_node = dai_node;
321
322 priv->dmic_codec_dev = platform_device_register_simple(
323 "dmic-codec", -1, NULL, 0);
324 if (IS_ERR(priv->dmic_codec_dev)) {
325 dev_err(&pdev->dev,
326 "Can't instantiate dmic-codec\n");
327 return PTR_ERR(priv->dmic_codec_dev);
328 }
329 } else {
330 num_links = 1;
331 }
332
333 priv->jack_detection = of_property_read_bool(node,
334 "ti,jack-detection");
335 of_property_read_u32(node, "ti,mclk-freq",
336 &priv->mclk_freq);
337 if (!priv->mclk_freq) {
338 dev_err(&pdev->dev, "MCLK frequency not provided\n");
339 ret = -EINVAL;
340 goto err_unregister;
341 }
342
343 omap_abe_card.fully_routed = 1;
344 } else if (pdata) {
345 if (pdata->card_name) {
346 card->name = pdata->card_name;
347 } else {
348 dev_err(&pdev->dev, "Card name is not provided\n");
349 return -ENODEV;
350 }
351
352 if (pdata->has_dmic)
353 num_links = 2;
354 else
355 num_links = 1;
356
357 priv->jack_detection = pdata->jack_detection;
358 priv->mclk_freq = pdata->mclk_freq;
359 } else {
360 dev_err(&pdev->dev, "Missing pdata\n");
361 return -ENODEV;
362 }
363
364
365 if (!priv->mclk_freq) {
366 dev_err(&pdev->dev, "MCLK frequency missing\n");
367 ret = -ENODEV;
368 goto err_unregister;
369 }
370
371 card->dai_link = abe_twl6040_dai_links;
372 card->num_links = num_links;
373
374 snd_soc_card_set_drvdata(card, priv);
375
376 ret = snd_soc_register_card(card);
377 if (ret) {
378 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
379 ret);
380 goto err_unregister;
381 }
382
383 return 0;
384
385 err_unregister:
386 if (!IS_ERR(priv->dmic_codec_dev))
387 platform_device_unregister(priv->dmic_codec_dev);
388
389 return ret;
390 }
391
392 static int omap_abe_remove(struct platform_device *pdev)
393 {
394 struct snd_soc_card *card = platform_get_drvdata(pdev);
395 struct abe_twl6040 *priv = snd_soc_card_get_drvdata(card);
396
397 snd_soc_unregister_card(card);
398
399 if (!IS_ERR(priv->dmic_codec_dev))
400 platform_device_unregister(priv->dmic_codec_dev);
401
402 return 0;
403 }
404
405 static const struct of_device_id omap_abe_of_match[] = {
406 {.compatible = "ti,abe-twl6040", },
407 { },
408 };
409 MODULE_DEVICE_TABLE(of, omap_abe_of_match);
410
411 static struct platform_driver omap_abe_driver = {
412 .driver = {
413 .name = "omap-abe-twl6040",
414 .owner = THIS_MODULE,
415 .pm = &snd_soc_pm_ops,
416 .of_match_table = omap_abe_of_match,
417 },
418 .probe = omap_abe_probe,
419 .remove = omap_abe_remove,
420 };
421
422 module_platform_driver(omap_abe_driver);
423
424 MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>");
425 MODULE_DESCRIPTION("ALSA SoC for OMAP boards with ABE and twl6040 codec");
426 MODULE_LICENSE("GPL");
427 MODULE_ALIAS("platform:omap-abe-twl6040");
428
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