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
20static 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
25static 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
33static const struct snd_kcontrol_new cs42l42_controls[] = {
34	SOC_DAPM_PIN_SWITCH("Headphone"),
35	SOC_DAPM_PIN_SWITCH("Headset Mic"),
36};
37
38static 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
49static 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
115int 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