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
24SND_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
30SND_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
36struct 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
43static struct platform_device *dmic_codec_dev;
44
45static 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 = snd_soc_substream_to_rtd(substream);
49	struct snd_soc_dai *codec_dai = snd_soc_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
73static const struct snd_soc_ops omap_abe_ops = {
74	.hw_params = omap_abe_hw_params,
75};
76
77static 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 = snd_soc_substream_to_rtd(substream);
81	struct snd_soc_dai *cpu_dai = snd_soc_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
99static const struct snd_soc_ops omap_abe_dmic_ops = {
100	.hw_params = omap_abe_dmic_hw_params,
101};
102
103/* Headset jack */
104static struct snd_soc_jack hs_jack;
105
106/*Headset jack detection DAPM pins */
107static 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 */
119static 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
137static 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
167static int omap_abe_twl6040_init(struct snd_soc_pcm_runtime *rtd)
168{
169	struct snd_soc_component *component = snd_soc_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
198static const struct snd_soc_dapm_route dmic_audio_map[] = {
199	{"DMic", NULL, "Digital Mic"},
200	{"Digital Mic", NULL, "Digital Mic1 Bias"},
201};
202
203static 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
211static 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
308static const struct of_device_id omap_abe_of_match[] = {
309	{.compatible = "ti,abe-twl6040", },
310	{ },
311};
312MODULE_DEVICE_TABLE(of, omap_abe_of_match);
313
314static 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
323static 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}
342module_init(omap_abe_init);
343
344static void __exit omap_abe_exit(void)
345{
346	platform_driver_unregister(&omap_abe_driver);
347	platform_device_unregister(dmic_codec_dev);
348}
349module_exit(omap_abe_exit);
350
351MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>");
352MODULE_DESCRIPTION("ALSA SoC for OMAP boards with ABE and twl6040 codec");
353MODULE_LICENSE("GPL");
354MODULE_ALIAS("platform:omap-abe-twl6040");
355