xref: /linux/sound/soc/qcom/common.c (revision a4a755c422242c27cb0f7900ac00cf33ac17b1ce)
1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (c) 2018, Linaro Limited.
3 // Copyright (c) 2018, The Linux Foundation. All rights reserved.
4 
5 #include <dt-bindings/sound/qcom,q6afe.h>
6 #include <linux/module.h>
7 #include <sound/jack.h>
8 #include <linux/input-event-codes.h>
9 #include "common.h"
10 
11 static const struct snd_soc_dapm_widget qcom_jack_snd_widgets[] = {
12 	SND_SOC_DAPM_HP("Headphone Jack", NULL),
13 	SND_SOC_DAPM_MIC("Mic Jack", NULL),
14 };
15 
16 int qcom_snd_parse_of(struct snd_soc_card *card)
17 {
18 	struct device_node *np;
19 	struct device_node *codec = NULL;
20 	struct device_node *platform = NULL;
21 	struct device_node *cpu = NULL;
22 	struct device *dev = card->dev;
23 	struct snd_soc_dai_link *link;
24 	struct of_phandle_args args;
25 	struct snd_soc_dai_link_component *dlc;
26 	int ret, num_links;
27 
28 	ret = snd_soc_of_parse_card_name(card, "model");
29 	if (ret == 0 && !card->name)
30 		/* Deprecated, only for compatibility with old device trees */
31 		ret = snd_soc_of_parse_card_name(card, "qcom,model");
32 	if (ret) {
33 		dev_err(dev, "Error parsing card name: %d\n", ret);
34 		return ret;
35 	}
36 
37 	if (of_property_read_bool(dev->of_node, "widgets")) {
38 		ret = snd_soc_of_parse_audio_simple_widgets(card, "widgets");
39 		if (ret)
40 			return ret;
41 	}
42 
43 	/* DAPM routes */
44 	if (of_property_read_bool(dev->of_node, "audio-routing")) {
45 		ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
46 		if (ret)
47 			return ret;
48 	}
49 	/* Deprecated, only for compatibility with old device trees */
50 	if (of_property_read_bool(dev->of_node, "qcom,audio-routing")) {
51 		ret = snd_soc_of_parse_audio_routing(card, "qcom,audio-routing");
52 		if (ret)
53 			return ret;
54 	}
55 
56 	ret = snd_soc_of_parse_pin_switches(card, "pin-switches");
57 	if (ret)
58 		return ret;
59 
60 	ret = snd_soc_of_parse_aux_devs(card, "aux-devs");
61 	if (ret)
62 		return ret;
63 
64 	/* Populate links */
65 	num_links = of_get_available_child_count(dev->of_node);
66 
67 	/* Allocate the DAI link array */
68 	card->dai_link = devm_kcalloc(dev, num_links, sizeof(*link), GFP_KERNEL);
69 	if (!card->dai_link)
70 		return -ENOMEM;
71 
72 	card->num_links = num_links;
73 	link = card->dai_link;
74 
75 	for_each_available_child_of_node(dev->of_node, np) {
76 		dlc = devm_kcalloc(dev, 2, sizeof(*dlc), GFP_KERNEL);
77 		if (!dlc) {
78 			ret = -ENOMEM;
79 			goto err_put_np;
80 		}
81 
82 		link->cpus	= &dlc[0];
83 		link->platforms	= &dlc[1];
84 
85 		link->num_cpus		= 1;
86 		link->num_platforms	= 1;
87 
88 		ret = of_property_read_string(np, "link-name", &link->name);
89 		if (ret) {
90 			dev_err(card->dev, "error getting codec dai_link name\n");
91 			goto err_put_np;
92 		}
93 
94 		cpu = of_get_child_by_name(np, "cpu");
95 		platform = of_get_child_by_name(np, "platform");
96 		codec = of_get_child_by_name(np, "codec");
97 
98 		if (!cpu) {
99 			dev_err(dev, "%s: Can't find cpu DT node\n", link->name);
100 			ret = -EINVAL;
101 			goto err;
102 		}
103 
104 		ret = snd_soc_of_get_dlc(cpu, &args, link->cpus, 0);
105 		if (ret) {
106 			dev_err_probe(card->dev, ret,
107 				      "%s: error getting cpu dai name\n", link->name);
108 			goto err;
109 		}
110 
111 		link->id = args.args[0];
112 
113 		if (platform) {
114 			link->platforms->of_node = of_parse_phandle(platform,
115 					"sound-dai",
116 					0);
117 			if (!link->platforms->of_node) {
118 				dev_err(card->dev, "%s: platform dai not found\n", link->name);
119 				ret = -EINVAL;
120 				goto err;
121 			}
122 		} else {
123 			link->platforms->of_node = link->cpus->of_node;
124 		}
125 
126 		if (codec) {
127 			ret = snd_soc_of_get_dai_link_codecs(dev, codec, link);
128 			if (ret < 0) {
129 				dev_err_probe(card->dev, ret,
130 					      "%s: codec dai not found\n", link->name);
131 				goto err;
132 			}
133 
134 			if (platform) {
135 				/* DPCM backend */
136 				link->no_pcm = 1;
137 				link->ignore_pmdown_time = 1;
138 			}
139 		} else {
140 			/* DPCM frontend */
141 			link->codecs	 = &snd_soc_dummy_dlc;
142 			link->num_codecs = 1;
143 			link->dynamic = 1;
144 		}
145 
146 		if (platform || !codec) {
147 			/* DPCM */
148 			snd_soc_dai_link_set_capabilities(link);
149 			link->ignore_suspend = 1;
150 			link->nonatomic = 1;
151 		}
152 
153 		link->stream_name = link->name;
154 		link++;
155 
156 		of_node_put(cpu);
157 		of_node_put(codec);
158 		of_node_put(platform);
159 	}
160 
161 	if (!card->dapm_widgets) {
162 		card->dapm_widgets = qcom_jack_snd_widgets;
163 		card->num_dapm_widgets = ARRAY_SIZE(qcom_jack_snd_widgets);
164 	}
165 
166 	return 0;
167 err:
168 	of_node_put(cpu);
169 	of_node_put(codec);
170 	of_node_put(platform);
171 err_put_np:
172 	of_node_put(np);
173 	return ret;
174 }
175 EXPORT_SYMBOL_GPL(qcom_snd_parse_of);
176 
177 static struct snd_soc_jack_pin qcom_headset_jack_pins[] = {
178 	/* Headset */
179 	{
180 		.pin = "Mic Jack",
181 		.mask = SND_JACK_MICROPHONE,
182 	},
183 	{
184 		.pin = "Headphone Jack",
185 		.mask = SND_JACK_HEADPHONE,
186 	},
187 };
188 
189 int qcom_snd_wcd_jack_setup(struct snd_soc_pcm_runtime *rtd,
190 			    struct snd_soc_jack *jack, bool *jack_setup)
191 {
192 	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
193 	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
194 	struct snd_soc_card *card = rtd->card;
195 	int rval, i;
196 
197 	if (!*jack_setup) {
198 		rval = snd_soc_card_jack_new_pins(card, "Headset Jack",
199 					     SND_JACK_HEADSET | SND_JACK_LINEOUT |
200 					     SND_JACK_MECHANICAL |
201 					     SND_JACK_BTN_0 | SND_JACK_BTN_1 |
202 					     SND_JACK_BTN_2 | SND_JACK_BTN_3 |
203 					     SND_JACK_BTN_4 | SND_JACK_BTN_5,
204 					     jack, qcom_headset_jack_pins,
205 					     ARRAY_SIZE(qcom_headset_jack_pins));
206 
207 		if (rval < 0) {
208 			dev_err(card->dev, "Unable to add Headphone Jack\n");
209 			return rval;
210 		}
211 
212 		snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_MEDIA);
213 		snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
214 		snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
215 		snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
216 		*jack_setup = true;
217 	}
218 
219 	switch (cpu_dai->id) {
220 	case TX_CODEC_DMA_TX_0:
221 	case TX_CODEC_DMA_TX_1:
222 	case TX_CODEC_DMA_TX_2:
223 	case TX_CODEC_DMA_TX_3:
224 		for_each_rtd_codec_dais(rtd, i, codec_dai) {
225 			rval = snd_soc_component_set_jack(codec_dai->component,
226 							  jack, NULL);
227 			if (rval != 0 && rval != -ENOTSUPP) {
228 				dev_warn(card->dev, "Failed to set jack: %d\n", rval);
229 				return rval;
230 			}
231 		}
232 
233 		break;
234 	default:
235 		break;
236 	}
237 
238 
239 	return 0;
240 }
241 EXPORT_SYMBOL_GPL(qcom_snd_wcd_jack_setup);
242 MODULE_LICENSE("GPL");
243