xref: /openbmc/linux/sound/soc/ti/omap-abe-twl6040.c (revision 19aed2d6)
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