1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * omap-abe-twl6040.c -- SoC audio for TI OMAP based boards with ABE and
4 * twl6040 codec
5 *
6 * Author: Misael Lopez Cruz <misael.lopez@ti.com>
7 */
8
9 #include <linux/clk.h>
10 #include <linux/platform_device.h>
11 #include <linux/mfd/twl6040.h>
12 #include <linux/module.h>
13 #include <linux/of.h>
14
15 #include <sound/core.h>
16 #include <sound/pcm.h>
17 #include <sound/soc.h>
18 #include <sound/jack.h>
19
20 #include "omap-dmic.h"
21 #include "omap-mcpdm.h"
22 #include "../codecs/twl6040.h"
23
24 SND_SOC_DAILINK_DEFS(link0,
25 DAILINK_COMP_ARRAY(COMP_EMPTY()),
26 DAILINK_COMP_ARRAY(COMP_CODEC("twl6040-codec",
27 "twl6040-legacy")),
28 DAILINK_COMP_ARRAY(COMP_EMPTY()));
29
30 SND_SOC_DAILINK_DEFS(link1,
31 DAILINK_COMP_ARRAY(COMP_EMPTY()),
32 DAILINK_COMP_ARRAY(COMP_CODEC("dmic-codec",
33 "dmic-hifi")),
34 DAILINK_COMP_ARRAY(COMP_EMPTY()));
35
36 struct abe_twl6040 {
37 struct snd_soc_card card;
38 struct snd_soc_dai_link dai_links[2];
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 = asoc_substream_to_rtd(substream);
49 struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
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 = asoc_substream_to_rtd(substream);
81 struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
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 const 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 = asoc_rtd_to_codec(rtd, 0)->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;
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_pins(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
omap_abe_probe(struct platform_device * pdev)211 static int omap_abe_probe(struct platform_device *pdev)
212 {
213 struct device_node *node = pdev->dev.of_node;
214 struct snd_soc_card *card;
215 struct device_node *dai_node;
216 struct abe_twl6040 *priv;
217 int num_links = 0;
218 int ret = 0;
219
220 if (!node) {
221 dev_err(&pdev->dev, "of node is missing.\n");
222 return -ENODEV;
223 }
224
225 priv = devm_kzalloc(&pdev->dev, sizeof(struct abe_twl6040), GFP_KERNEL);
226 if (priv == NULL)
227 return -ENOMEM;
228
229 card = &priv->card;
230 card->dev = &pdev->dev;
231 card->owner = THIS_MODULE;
232 card->dapm_widgets = twl6040_dapm_widgets;
233 card->num_dapm_widgets = ARRAY_SIZE(twl6040_dapm_widgets);
234 card->dapm_routes = audio_map;
235 card->num_dapm_routes = ARRAY_SIZE(audio_map);
236
237 if (snd_soc_of_parse_card_name(card, "ti,model")) {
238 dev_err(&pdev->dev, "Card name is not provided\n");
239 return -ENODEV;
240 }
241
242 ret = snd_soc_of_parse_audio_routing(card, "ti,audio-routing");
243 if (ret) {
244 dev_err(&pdev->dev, "Error while parsing DAPM routing\n");
245 return ret;
246 }
247
248 dai_node = of_parse_phandle(node, "ti,mcpdm", 0);
249 if (!dai_node) {
250 dev_err(&pdev->dev, "McPDM node is not provided\n");
251 return -EINVAL;
252 }
253
254 priv->dai_links[0].name = "DMIC";
255 priv->dai_links[0].stream_name = "TWL6040";
256 priv->dai_links[0].cpus = link0_cpus;
257 priv->dai_links[0].num_cpus = 1;
258 priv->dai_links[0].cpus->of_node = dai_node;
259 priv->dai_links[0].platforms = link0_platforms;
260 priv->dai_links[0].num_platforms = 1;
261 priv->dai_links[0].platforms->of_node = dai_node;
262 priv->dai_links[0].codecs = link0_codecs;
263 priv->dai_links[0].num_codecs = 1;
264 priv->dai_links[0].init = omap_abe_twl6040_init;
265 priv->dai_links[0].ops = &omap_abe_ops;
266
267 dai_node = of_parse_phandle(node, "ti,dmic", 0);
268 if (dai_node) {
269 num_links = 2;
270 priv->dai_links[1].name = "TWL6040";
271 priv->dai_links[1].stream_name = "DMIC Capture";
272 priv->dai_links[1].cpus = link1_cpus;
273 priv->dai_links[1].num_cpus = 1;
274 priv->dai_links[1].cpus->of_node = dai_node;
275 priv->dai_links[1].platforms = link1_platforms;
276 priv->dai_links[1].num_platforms = 1;
277 priv->dai_links[1].platforms->of_node = dai_node;
278 priv->dai_links[1].codecs = link1_codecs;
279 priv->dai_links[1].num_codecs = 1;
280 priv->dai_links[1].init = omap_abe_dmic_init;
281 priv->dai_links[1].ops = &omap_abe_dmic_ops;
282 } else {
283 num_links = 1;
284 }
285
286 priv->jack_detection = of_property_read_bool(node, "ti,jack-detection");
287 of_property_read_u32(node, "ti,mclk-freq", &priv->mclk_freq);
288 if (!priv->mclk_freq) {
289 dev_err(&pdev->dev, "MCLK frequency not provided\n");
290 return -EINVAL;
291 }
292
293 card->fully_routed = 1;
294
295 card->dai_link = priv->dai_links;
296 card->num_links = num_links;
297
298 snd_soc_card_set_drvdata(card, priv);
299
300 ret = devm_snd_soc_register_card(&pdev->dev, card);
301 if (ret)
302 dev_err(&pdev->dev, "devm_snd_soc_register_card() failed: %d\n",
303 ret);
304
305 return ret;
306 }
307
308 static const struct of_device_id omap_abe_of_match[] = {
309 {.compatible = "ti,abe-twl6040", },
310 { },
311 };
312 MODULE_DEVICE_TABLE(of, omap_abe_of_match);
313
314 static struct platform_driver omap_abe_driver = {
315 .driver = {
316 .name = "omap-abe-twl6040",
317 .pm = &snd_soc_pm_ops,
318 .of_match_table = omap_abe_of_match,
319 },
320 .probe = omap_abe_probe,
321 };
322
omap_abe_init(void)323 static int __init omap_abe_init(void)
324 {
325 int ret;
326
327 dmic_codec_dev = platform_device_register_simple("dmic-codec", -1, NULL,
328 0);
329 if (IS_ERR(dmic_codec_dev)) {
330 pr_err("%s: dmic-codec device registration failed\n", __func__);
331 return PTR_ERR(dmic_codec_dev);
332 }
333
334 ret = platform_driver_register(&omap_abe_driver);
335 if (ret) {
336 pr_err("%s: platform driver registration failed\n", __func__);
337 platform_device_unregister(dmic_codec_dev);
338 }
339
340 return ret;
341 }
342 module_init(omap_abe_init);
343
omap_abe_exit(void)344 static void __exit omap_abe_exit(void)
345 {
346 platform_driver_unregister(&omap_abe_driver);
347 platform_device_unregister(dmic_codec_dev);
348 }
349 module_exit(omap_abe_exit);
350
351 MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>");
352 MODULE_DESCRIPTION("ALSA SoC for OMAP boards with ABE and twl6040 codec");
353 MODULE_LICENSE("GPL");
354 MODULE_ALIAS("platform:omap-abe-twl6040");
355