1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * omap-twl4030.c -- SoC audio for TI SoC based boards with twl4030 codec
4 *
5 * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com
6 * All rights reserved.
7 *
8 * Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
9 *
10 * This driver replaces the following machine drivers:
11 * omap3beagle (Author: Steve Sakoman <steve@sakoman.com>)
12 * omap3evm (Author: Anuj Aggarwal <anuj.aggarwal@ti.com>)
13 * overo (Author: Steve Sakoman <steve@sakoman.com>)
14 * igep0020 (Author: Enric Balletbo i Serra <eballetbo@iseebcn.com>)
15 * zoom2 (Author: Misael Lopez Cruz <misael.lopez@ti.com>)
16 * sdp3430 (Author: Misael Lopez Cruz <misael.lopez@ti.com>)
17 */
18
19#include <linux/platform_device.h>
20#include <linux/platform_data/omap-twl4030.h>
21#include <linux/module.h>
22#include <linux/of.h>
23
24#include <sound/core.h>
25#include <sound/pcm.h>
26#include <sound/soc.h>
27#include <sound/jack.h>
28
29#include "omap-mcbsp.h"
30
31struct omap_twl4030 {
32 struct snd_soc_jack hs_jack;
33};
34
35static int omap_twl4030_hw_params(struct snd_pcm_substream *substream,
36 struct snd_pcm_hw_params *params)
37{
38 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
39 unsigned int fmt;
40
41 switch (params_channels(p: params)) {
42 case 2: /* Stereo I2S mode */
43 fmt = SND_SOC_DAIFMT_I2S |
44 SND_SOC_DAIFMT_NB_NF |
45 SND_SOC_DAIFMT_CBP_CFP;
46 break;
47 case 4: /* Four channel TDM mode */
48 fmt = SND_SOC_DAIFMT_DSP_A |
49 SND_SOC_DAIFMT_IB_NF |
50 SND_SOC_DAIFMT_CBP_CFP;
51 break;
52 default:
53 return -EINVAL;
54 }
55
56 return snd_soc_runtime_set_dai_fmt(rtd, dai_fmt: fmt);
57}
58
59static const struct snd_soc_ops omap_twl4030_ops = {
60 .hw_params = omap_twl4030_hw_params,
61};
62
63static const struct snd_soc_dapm_widget dapm_widgets[] = {
64 SND_SOC_DAPM_SPK("Earpiece Spk", NULL),
65 SND_SOC_DAPM_SPK("Handsfree Spk", NULL),
66 SND_SOC_DAPM_HP("Headset Stereophone", NULL),
67 SND_SOC_DAPM_SPK("Ext Spk", NULL),
68 SND_SOC_DAPM_SPK("Carkit Spk", NULL),
69
70 SND_SOC_DAPM_MIC("Main Mic", NULL),
71 SND_SOC_DAPM_MIC("Sub Mic", NULL),
72 SND_SOC_DAPM_MIC("Headset Mic", NULL),
73 SND_SOC_DAPM_MIC("Carkit Mic", NULL),
74 SND_SOC_DAPM_MIC("Digital0 Mic", NULL),
75 SND_SOC_DAPM_MIC("Digital1 Mic", NULL),
76 SND_SOC_DAPM_LINE("Line In", NULL),
77};
78
79static const struct snd_soc_dapm_route audio_map[] = {
80 /* Headset Stereophone: HSOL, HSOR */
81 {"Headset Stereophone", NULL, "HSOL"},
82 {"Headset Stereophone", NULL, "HSOR"},
83 /* External Speakers: HFL, HFR */
84 {"Handsfree Spk", NULL, "HFL"},
85 {"Handsfree Spk", NULL, "HFR"},
86 /* External Speakers: PredrivL, PredrivR */
87 {"Ext Spk", NULL, "PREDRIVEL"},
88 {"Ext Spk", NULL, "PREDRIVER"},
89 /* Carkit speakers: CARKITL, CARKITR */
90 {"Carkit Spk", NULL, "CARKITL"},
91 {"Carkit Spk", NULL, "CARKITR"},
92 /* Earpiece */
93 {"Earpiece Spk", NULL, "EARPIECE"},
94
95 /* External Mics: MAINMIC, SUBMIC with bias */
96 {"MAINMIC", NULL, "Main Mic"},
97 {"Main Mic", NULL, "Mic Bias 1"},
98 {"SUBMIC", NULL, "Sub Mic"},
99 {"Sub Mic", NULL, "Mic Bias 2"},
100 /* Headset Mic: HSMIC with bias */
101 {"HSMIC", NULL, "Headset Mic"},
102 {"Headset Mic", NULL, "Headset Mic Bias"},
103 /* Digital Mics: DIGIMIC0, DIGIMIC1 with bias */
104 {"DIGIMIC0", NULL, "Digital0 Mic"},
105 {"Digital0 Mic", NULL, "Mic Bias 1"},
106 {"DIGIMIC1", NULL, "Digital1 Mic"},
107 {"Digital1 Mic", NULL, "Mic Bias 2"},
108 /* Carkit In: CARKITMIC */
109 {"CARKITMIC", NULL, "Carkit Mic"},
110 /* Aux In: AUXL, AUXR */
111 {"AUXL", NULL, "Line In"},
112 {"AUXR", NULL, "Line In"},
113};
114
115/* Headset jack detection DAPM pins */
116static struct snd_soc_jack_pin hs_jack_pins[] = {
117 {
118 .pin = "Headset Mic",
119 .mask = SND_JACK_MICROPHONE,
120 },
121 {
122 .pin = "Headset Stereophone",
123 .mask = SND_JACK_HEADPHONE,
124 },
125};
126
127/* Headset jack detection gpios */
128static struct snd_soc_jack_gpio hs_jack_gpios[] = {
129 {
130 .name = "ti,jack-det",
131 .report = SND_JACK_HEADSET,
132 .debounce_time = 200,
133 },
134};
135
136static inline void twl4030_disconnect_pin(struct snd_soc_dapm_context *dapm,
137 int connected, char *pin)
138{
139 if (!connected)
140 snd_soc_dapm_disable_pin(dapm, pin);
141}
142
143static int omap_twl4030_init(struct snd_soc_pcm_runtime *rtd)
144{
145 struct snd_soc_card *card = rtd->card;
146 struct snd_soc_dapm_context *dapm = snd_soc_card_to_dapm(card);
147 struct omap_tw4030_pdata *pdata = dev_get_platdata(dev: card->dev);
148 struct omap_twl4030 *priv = snd_soc_card_get_drvdata(card);
149 int ret = 0;
150
151 /*
152 * This is a bit of a hack, but the GPIO is optional so we
153 * only want to add the jack detection if the GPIO is there.
154 */
155 if (of_property_present(np: card->dev->of_node, propname: "ti,jack-det-gpio")) {
156 hs_jack_gpios[0].gpiod_dev = card->dev;
157 hs_jack_gpios[0].idx = 0;
158
159 ret = snd_soc_card_jack_new_pins(card: rtd->card, id: "Headset Jack",
160 type: SND_JACK_HEADSET,
161 jack: &priv->hs_jack, pins: hs_jack_pins,
162 ARRAY_SIZE(hs_jack_pins));
163 if (ret)
164 return ret;
165
166 ret = snd_soc_jack_add_gpios(jack: &priv->hs_jack,
167 ARRAY_SIZE(hs_jack_gpios),
168 gpios: hs_jack_gpios);
169 if (ret)
170 return ret;
171 }
172
173 /*
174 * NULL pdata means we booted with DT. In this case the routing is
175 * provided and the card is fully routed, no need to mark pins.
176 */
177 if (!pdata || !pdata->custom_routing)
178 return ret;
179
180 /* Disable not connected paths if not used */
181 twl4030_disconnect_pin(dapm, connected: pdata->has_ear, pin: "Earpiece Spk");
182 twl4030_disconnect_pin(dapm, connected: pdata->has_hf, pin: "Handsfree Spk");
183 twl4030_disconnect_pin(dapm, connected: pdata->has_hs, pin: "Headset Stereophone");
184 twl4030_disconnect_pin(dapm, connected: pdata->has_predriv, pin: "Ext Spk");
185 twl4030_disconnect_pin(dapm, connected: pdata->has_carkit, pin: "Carkit Spk");
186
187 twl4030_disconnect_pin(dapm, connected: pdata->has_mainmic, pin: "Main Mic");
188 twl4030_disconnect_pin(dapm, connected: pdata->has_submic, pin: "Sub Mic");
189 twl4030_disconnect_pin(dapm, connected: pdata->has_hsmic, pin: "Headset Mic");
190 twl4030_disconnect_pin(dapm, connected: pdata->has_carkitmic, pin: "Carkit Mic");
191 twl4030_disconnect_pin(dapm, connected: pdata->has_digimic0, pin: "Digital0 Mic");
192 twl4030_disconnect_pin(dapm, connected: pdata->has_digimic1, pin: "Digital1 Mic");
193 twl4030_disconnect_pin(dapm, connected: pdata->has_linein, pin: "Line In");
194
195 return ret;
196}
197
198/* Digital audio interface glue - connects codec <--> CPU */
199SND_SOC_DAILINK_DEFS(hifi,
200 DAILINK_COMP_ARRAY(COMP_CPU("omap-mcbsp.2")),
201 DAILINK_COMP_ARRAY(COMP_CODEC("twl4030-codec", "twl4030-hifi")),
202 DAILINK_COMP_ARRAY(COMP_PLATFORM("omap-mcbsp.2")));
203
204SND_SOC_DAILINK_DEFS(voice,
205 DAILINK_COMP_ARRAY(COMP_CPU("omap-mcbsp.3")),
206 DAILINK_COMP_ARRAY(COMP_CODEC("twl4030-codec", "twl4030-voice")),
207 DAILINK_COMP_ARRAY(COMP_PLATFORM("omap-mcbsp.3")));
208
209static struct snd_soc_dai_link omap_twl4030_dai_links[] = {
210 {
211 .name = "TWL4030 HiFi",
212 .stream_name = "TWL4030 HiFi",
213 .init = omap_twl4030_init,
214 .ops = &omap_twl4030_ops,
215 SND_SOC_DAILINK_REG(hifi),
216 },
217 {
218 .name = "TWL4030 Voice",
219 .stream_name = "TWL4030 Voice",
220 .dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
221 SND_SOC_DAIFMT_CBP_CFP,
222 SND_SOC_DAILINK_REG(voice),
223 },
224};
225
226/* Audio machine driver */
227static struct snd_soc_card omap_twl4030_card = {
228 .owner = THIS_MODULE,
229 .dai_link = omap_twl4030_dai_links,
230 .num_links = ARRAY_SIZE(omap_twl4030_dai_links),
231
232 .dapm_widgets = dapm_widgets,
233 .num_dapm_widgets = ARRAY_SIZE(dapm_widgets),
234 .dapm_routes = audio_map,
235 .num_dapm_routes = ARRAY_SIZE(audio_map),
236};
237
238static int omap_twl4030_probe(struct platform_device *pdev)
239{
240 struct omap_tw4030_pdata *pdata = dev_get_platdata(dev: &pdev->dev);
241 struct device_node *node = pdev->dev.of_node;
242 struct snd_soc_card *card = &omap_twl4030_card;
243 struct omap_twl4030 *priv;
244 int ret = 0;
245
246 card->dev = &pdev->dev;
247
248 priv = devm_kzalloc(dev: &pdev->dev, size: sizeof(struct omap_twl4030), GFP_KERNEL);
249 if (priv == NULL)
250 return -ENOMEM;
251
252 if (node) {
253 struct device_node *dai_node;
254 struct property *prop;
255
256 if (snd_soc_of_parse_card_name(card, propname: "ti,model")) {
257 dev_err(&pdev->dev, "Card name is not provided\n");
258 return -ENODEV;
259 }
260
261 dai_node = of_parse_phandle(np: node, phandle_name: "ti,mcbsp", index: 0);
262 if (!dai_node) {
263 dev_err(&pdev->dev, "McBSP node is not provided\n");
264 return -EINVAL;
265 }
266 omap_twl4030_dai_links[0].cpus->dai_name = NULL;
267 omap_twl4030_dai_links[0].cpus->of_node = dai_node;
268
269 omap_twl4030_dai_links[0].platforms->name = NULL;
270 omap_twl4030_dai_links[0].platforms->of_node = dai_node;
271
272 dai_node = of_parse_phandle(np: node, phandle_name: "ti,mcbsp-voice", index: 0);
273 if (!dai_node) {
274 card->num_links = 1;
275 } else {
276 omap_twl4030_dai_links[1].cpus->dai_name = NULL;
277 omap_twl4030_dai_links[1].cpus->of_node = dai_node;
278
279 omap_twl4030_dai_links[1].platforms->name = NULL;
280 omap_twl4030_dai_links[1].platforms->of_node = dai_node;
281 }
282
283 /* Optional: audio routing can be provided */
284 prop = of_find_property(np: node, name: "ti,audio-routing", NULL);
285 if (prop) {
286 ret = snd_soc_of_parse_audio_routing(card,
287 propname: "ti,audio-routing");
288 if (ret)
289 return ret;
290
291 card->fully_routed = 1;
292 }
293 } else if (pdata) {
294 if (pdata->card_name) {
295 card->name = pdata->card_name;
296 } else {
297 dev_err(&pdev->dev, "Card name is not provided\n");
298 return -ENODEV;
299 }
300
301 if (!pdata->voice_connected)
302 card->num_links = 1;
303 } else {
304 dev_err(&pdev->dev, "Missing pdata\n");
305 return -ENODEV;
306 }
307
308 snd_soc_card_set_drvdata(card, data: priv);
309 ret = devm_snd_soc_register_card(dev: &pdev->dev, card);
310 if (ret) {
311 dev_err(&pdev->dev, "devm_snd_soc_register_card() failed: %d\n",
312 ret);
313 return ret;
314 }
315
316 return 0;
317}
318
319static const struct of_device_id omap_twl4030_of_match[] = {
320 {.compatible = "ti,omap-twl4030", },
321 { },
322};
323MODULE_DEVICE_TABLE(of, omap_twl4030_of_match);
324
325static struct platform_driver omap_twl4030_driver = {
326 .driver = {
327 .name = "omap-twl4030",
328 .pm = &snd_soc_pm_ops,
329 .of_match_table = omap_twl4030_of_match,
330 },
331 .probe = omap_twl4030_probe,
332};
333
334module_platform_driver(omap_twl4030_driver);
335
336MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
337MODULE_DESCRIPTION("ALSA SoC for TI SoC based boards with twl4030 codec");
338MODULE_LICENSE("GPL");
339MODULE_ALIAS("platform:omap-twl4030");
340

source code of linux/sound/soc/ti/omap-twl4030.c