1 // SPDX-License-Identifier: GPL-2.0-only
2 // Copyright (c) 2023 Intel Corporation
3 
4 /*
5  *  sof_sdw_cs42l42 - Helpers to handle CS42L42 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/control.h>
14 #include <sound/soc.h>
15 #include <sound/soc-acpi.h>
16 #include <sound/soc-dapm.h>
17 #include <sound/jack.h>
18 #include "sof_sdw_common.h"
19 
20 static const struct snd_soc_dapm_widget cs42l42_widgets[] = {
21 	SND_SOC_DAPM_HP("Headphone", NULL),
22 	SND_SOC_DAPM_MIC("Headset Mic", NULL),
23 };
24 
25 static const struct snd_soc_dapm_route cs42l42_map[] = {
26 	/* HP jack connectors - unknown if we have jack detection */
27 	{"Headphone", NULL, "cs42l42 HP"},
28 
29 	/* other jacks */
30 	{"cs42l42 HS", NULL, "Headset Mic"},
31 };
32 
33 static const struct snd_kcontrol_new cs42l42_controls[] = {
34 	SOC_DAPM_PIN_SWITCH("Headphone"),
35 	SOC_DAPM_PIN_SWITCH("Headset Mic"),
36 };
37 
38 static struct snd_soc_jack_pin cs42l42_jack_pins[] = {
39 	{
40 		.pin    = "Headphone",
41 		.mask   = SND_JACK_HEADPHONE,
42 	},
43 	{
44 		.pin    = "Headset Mic",
45 		.mask   = SND_JACK_MICROPHONE,
46 	},
47 };
48 
49 static int cs42l42_rtd_init(struct snd_soc_pcm_runtime *rtd)
50 {
51 	struct snd_soc_card *card = rtd->card;
52 	struct mc_private *ctx = snd_soc_card_get_drvdata(card);
53 	struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
54 	struct snd_soc_component *component = codec_dai->component;
55 	struct snd_soc_jack *jack;
56 	int ret;
57 
58 	card->components = devm_kasprintf(card->dev, GFP_KERNEL,
59 					  "%s hs:cs42l42",
60 					  card->components);
61 	if (!card->components)
62 		return -ENOMEM;
63 
64 	ret = snd_soc_add_card_controls(card, cs42l42_controls,
65 					ARRAY_SIZE(cs42l42_controls));
66 	if (ret) {
67 		dev_err(card->dev, "cs42l42 control addition failed: %d\n", ret);
68 		return ret;
69 	}
70 
71 	ret = snd_soc_dapm_new_controls(&card->dapm, cs42l42_widgets,
72 					ARRAY_SIZE(cs42l42_widgets));
73 	if (ret) {
74 		dev_err(card->dev, "cs42l42 widgets addition failed: %d\n", ret);
75 		return ret;
76 	}
77 
78 	ret = snd_soc_dapm_add_routes(&card->dapm, cs42l42_map,
79 				      ARRAY_SIZE(cs42l42_map));
80 
81 	if (ret) {
82 		dev_err(card->dev, "cs42l42 map addition failed: %d\n", ret);
83 		return ret;
84 	}
85 
86 	ret = snd_soc_card_jack_new_pins(rtd->card, "Headset Jack",
87 					 SND_JACK_HEADSET | SND_JACK_BTN_0 |
88 					 SND_JACK_BTN_1 | SND_JACK_BTN_2 |
89 					 SND_JACK_BTN_3,
90 					 &ctx->sdw_headset,
91 					 cs42l42_jack_pins,
92 					 ARRAY_SIZE(cs42l42_jack_pins));
93 	if (ret) {
94 		dev_err(rtd->card->dev, "Headset Jack creation failed: %d\n",
95 			ret);
96 		return ret;
97 	}
98 
99 	jack = &ctx->sdw_headset;
100 
101 	snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
102 	snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOLUMEUP);
103 	snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEDOWN);
104 	snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOICECOMMAND);
105 
106 	ret = snd_soc_component_set_jack(component, jack, NULL);
107 
108 	if (ret)
109 		dev_err(rtd->card->dev, "Headset Jack call-back failed: %d\n",
110 			ret);
111 
112 	return ret;
113 }
114 
115 int sof_sdw_cs42l42_init(struct snd_soc_card *card,
116 			 const struct snd_soc_acpi_link_adr *link,
117 			 struct snd_soc_dai_link *dai_links,
118 			 struct sof_sdw_codec_info *info,
119 			 bool playback)
120 {
121 	/*
122 	 * headset should be initialized once.
123 	 * Do it with dai link for playback.
124 	 */
125 	if (!playback)
126 		return 0;
127 
128 	dai_links->init = cs42l42_rtd_init;
129 
130 	return 0;
131 }
132