1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (c) 2020 Intel Corporation
3 
4 /*
5  *  sof_sdw_rt711 - Helpers to handle RT711 from generic machine driver
6  */
7 
8 #include <linux/device.h>
9 #include <linux/errno.h>
10 #include <linux/input.h>
11 #include <linux/soundwire/sdw.h>
12 #include <linux/soundwire/sdw_type.h>
13 #include <sound/soc.h>
14 #include <sound/soc-acpi.h>
15 #include <sound/jack.h>
16 #include "sof_sdw_common.h"
17 
18 /*
19  * Note this MUST be called before snd_soc_register_card(), so that the props
20  * are in place before the codec component driver's probe function parses them.
21  */
22 static int rt711_add_codec_device_props(const char *sdw_dev_name)
23 {
24 	struct property_entry props[MAX_NO_PROPS] = {};
25 	struct device *sdw_dev;
26 	int ret;
27 
28 	sdw_dev = bus_find_device_by_name(&sdw_bus_type, NULL, sdw_dev_name);
29 	if (!sdw_dev)
30 		return -EPROBE_DEFER;
31 
32 	if (SOF_RT711_JDSRC(sof_sdw_quirk)) {
33 		props[0] = PROPERTY_ENTRY_U32("realtek,jd-src",
34 					      SOF_RT711_JDSRC(sof_sdw_quirk));
35 	}
36 
37 	ret = device_add_properties(sdw_dev, props);
38 	put_device(sdw_dev);
39 
40 	return ret;
41 }
42 
43 static const struct snd_soc_dapm_widget rt711_widgets[] = {
44 	SND_SOC_DAPM_HP("Headphone", NULL),
45 	SND_SOC_DAPM_MIC("Headset Mic", NULL),
46 };
47 
48 static const struct snd_soc_dapm_route rt711_map[] = {
49 	/* Headphones */
50 	{ "Headphone", NULL, "rt711 HP" },
51 	{ "rt711 MIC2", NULL, "Headset Mic" },
52 };
53 
54 static const struct snd_kcontrol_new rt711_controls[] = {
55 	SOC_DAPM_PIN_SWITCH("Headphone"),
56 	SOC_DAPM_PIN_SWITCH("Headset Mic"),
57 };
58 
59 static struct snd_soc_jack_pin rt711_jack_pins[] = {
60 	{
61 		.pin    = "Headphone",
62 		.mask   = SND_JACK_HEADPHONE,
63 	},
64 	{
65 		.pin    = "Headset Mic",
66 		.mask   = SND_JACK_MICROPHONE,
67 	},
68 };
69 
70 static int rt711_rtd_init(struct snd_soc_pcm_runtime *rtd)
71 {
72 	struct snd_soc_card *card = rtd->card;
73 	struct mc_private *ctx = snd_soc_card_get_drvdata(card);
74 	struct snd_soc_component *component = rtd->codec_dai->component;
75 	struct snd_soc_jack *jack;
76 	int ret;
77 
78 	card->components = devm_kasprintf(card->dev, GFP_KERNEL,
79 					  "%s hs:rt711",
80 					  card->components);
81 	if (!card->components)
82 		return -ENOMEM;
83 
84 	ret = snd_soc_add_card_controls(card, rt711_controls,
85 					ARRAY_SIZE(rt711_controls));
86 	if (ret) {
87 		dev_err(card->dev, "rt711 controls addition failed: %d\n", ret);
88 		return ret;
89 	}
90 
91 	ret = snd_soc_dapm_new_controls(&card->dapm, rt711_widgets,
92 					ARRAY_SIZE(rt711_widgets));
93 	if (ret) {
94 		dev_err(card->dev, "rt711 widgets addition failed: %d\n", ret);
95 		return ret;
96 	}
97 
98 	ret = snd_soc_dapm_add_routes(&card->dapm, rt711_map,
99 				      ARRAY_SIZE(rt711_map));
100 
101 	if (ret) {
102 		dev_err(card->dev, "rt711 map addition failed: %d\n", ret);
103 		return ret;
104 	}
105 
106 	ret = snd_soc_card_jack_new(rtd->card, "Headset Jack",
107 				    SND_JACK_HEADSET | SND_JACK_BTN_0 |
108 				    SND_JACK_BTN_1 | SND_JACK_BTN_2 |
109 				    SND_JACK_BTN_3,
110 				    &ctx->sdw_headset,
111 				    rt711_jack_pins,
112 				    ARRAY_SIZE(rt711_jack_pins));
113 	if (ret) {
114 		dev_err(rtd->card->dev, "Headset Jack creation failed: %d\n",
115 			ret);
116 		return ret;
117 	}
118 
119 	jack = &ctx->sdw_headset;
120 
121 	snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_VOLUMEUP);
122 	snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_PLAYPAUSE);
123 	snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEDOWN);
124 	snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOICECOMMAND);
125 
126 	ret = snd_soc_component_set_jack(component, jack, NULL);
127 
128 	if (ret)
129 		dev_err(rtd->card->dev, "Headset Jack call-back failed: %d\n",
130 			ret);
131 
132 	return ret;
133 }
134 
135 int sof_sdw_rt711_init(const struct snd_soc_acpi_link_adr *link,
136 		       struct snd_soc_dai_link *dai_links,
137 		       struct sof_sdw_codec_info *info,
138 		       bool playback)
139 {
140 	int ret;
141 
142 	/*
143 	 * headset should be initialized once.
144 	 * Do it with dai link for playback.
145 	 */
146 	if (!playback)
147 		return 0;
148 
149 	ret = rt711_add_codec_device_props("sdw:0:25d:711:0");
150 	if (ret < 0)
151 		return ret;
152 
153 	dai_links->init = rt711_rtd_init;
154 
155 	return 0;
156 }
157