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
43 static struct platform_device *dmic_codec_dev;
44
omap_abe_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)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(codec_dai->component);
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 const struct snd_soc_ops omap_abe_ops = {
74 .hw_params = omap_abe_hw_params,
75 };
76
omap_abe_dmic_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)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
omap_abe_twl6040_init(struct snd_soc_pcm_runtime * rtd)167 static int omap_abe_twl6040_init(struct snd_soc_pcm_runtime *rtd)
168 {
169 struct snd_soc_component *component = rtd->codec_dai->component;
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(component, 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_card_jack_new(rtd->card, "Headset Jack",
186 SND_JACK_HEADSET, &hs_jack,
187 hs_jack_pins,
188 ARRAY_SIZE(hs_jack_pins));
189 if (ret)
190 return ret;
191
192 twl6040_hs_jack_detect(component, &hs_jack, SND_JACK_HEADSET);
193 }
194
195 return 0;
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
omap_abe_dmic_init(struct snd_soc_pcm_runtime * rtd)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
omap_abe_probe(struct platform_device * pdev)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 if (snd_soc_of_parse_card_name(card, "ti,model")) {
262 dev_err(&pdev->dev, "Card name is not provided\n");
263 return -ENODEV;
264 }
265
266 ret = snd_soc_of_parse_audio_routing(card, "ti,audio-routing");
267 if (ret) {
268 dev_err(&pdev->dev, "Error while parsing DAPM routing\n");
269 return ret;
270 }
271
272 dai_node = of_parse_phandle(node, "ti,mcpdm", 0);
273 if (!dai_node) {
274 dev_err(&pdev->dev, "McPDM node is not provided\n");
275 return -EINVAL;
276 }
277 abe_twl6040_dai_links[0].cpu_of_node = dai_node;
278 abe_twl6040_dai_links[0].platform_of_node = dai_node;
279
280 dai_node = of_parse_phandle(node, "ti,dmic", 0);
281 if (dai_node) {
282 num_links = 2;
283 abe_twl6040_dai_links[1].cpu_of_node = dai_node;
284 abe_twl6040_dai_links[1].platform_of_node = dai_node;
285 } else {
286 num_links = 1;
287 }
288
289 priv->jack_detection = of_property_read_bool(node, "ti,jack-detection");
290 of_property_read_u32(node, "ti,mclk-freq", &priv->mclk_freq);
291 if (!priv->mclk_freq) {
292 dev_err(&pdev->dev, "MCLK frequency not provided\n");
293 return -EINVAL;
294 }
295
296 card->fully_routed = 1;
297
298 if (!priv->mclk_freq) {
299 dev_err(&pdev->dev, "MCLK frequency missing\n");
300 return -ENODEV;
301 }
302
303 card->dai_link = abe_twl6040_dai_links;
304 card->num_links = num_links;
305
306 snd_soc_card_set_drvdata(card, priv);
307
308 ret = devm_snd_soc_register_card(&pdev->dev, card);
309 if (ret)
310 dev_err(&pdev->dev, "devm_snd_soc_register_card() failed: %d\n",
311 ret);
312
313 return ret;
314 }
315
316 static const struct of_device_id omap_abe_of_match[] = {
317 {.compatible = "ti,abe-twl6040", },
318 { },
319 };
320 MODULE_DEVICE_TABLE(of, omap_abe_of_match);
321
322 static struct platform_driver omap_abe_driver = {
323 .driver = {
324 .name = "omap-abe-twl6040",
325 .pm = &snd_soc_pm_ops,
326 .of_match_table = omap_abe_of_match,
327 },
328 .probe = omap_abe_probe,
329 };
330
omap_abe_init(void)331 static int __init omap_abe_init(void)
332 {
333 int ret;
334
335 dmic_codec_dev = platform_device_register_simple("dmic-codec", -1, NULL,
336 0);
337 if (IS_ERR(dmic_codec_dev)) {
338 pr_err("%s: dmic-codec device registration failed\n", __func__);
339 return PTR_ERR(dmic_codec_dev);
340 }
341
342 ret = platform_driver_register(&omap_abe_driver);
343 if (ret) {
344 pr_err("%s: platform driver registration failed\n", __func__);
345 platform_device_unregister(dmic_codec_dev);
346 }
347
348 return ret;
349 }
350 module_init(omap_abe_init);
351
omap_abe_exit(void)352 static void __exit omap_abe_exit(void)
353 {
354 platform_driver_unregister(&omap_abe_driver);
355 platform_device_unregister(dmic_codec_dev);
356 }
357 module_exit(omap_abe_exit);
358
359 MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>");
360 MODULE_DESCRIPTION("ALSA SoC for OMAP boards with ABE and twl6040 codec");
361 MODULE_LICENSE("GPL");
362 MODULE_ALIAS("platform:omap-abe-twl6040");
363
