soc_sdw_cs42l42.c

 1// SPDX-License-Identifier: GPL-2.0-only
 2// This file incorporates work covered by the following copyright notice:
 3// Copyright (c) 2023 Intel Corporation
 4// Copyright (c) 2024 Advanced Micro Devices, Inc.
 5/*
 6 *  soc_sdw_cs42l42 - Helpers to handle CS42L42 from generic machine driver
 7 */
 8
 9#include <linux/device.h>
10#include <linux/errno.h>
11#include <linux/input.h>
12#include <linux/soundwire/sdw.h>
13#include <linux/soundwire/sdw_type.h>
14#include <sound/control.h>
15#include <sound/soc.h>
16#include <sound/soc-acpi.h>
17#include <sound/soc-dapm.h>
18#include <sound/jack.h>
19#include <sound/soc_sdw_utils.h>
20
21static const struct snd_soc_dapm_route cs42l42_map[] = {
22	/* HP jack connectors - unknown if we have jack detection */
23	{"Headphone", NULL, "cs42l42 HP"},
24
25	/* other jacks */
26	{"cs42l42 HS", NULL, "Headset Mic"},
27};
28
29static struct snd_soc_jack_pin cs42l42_jack_pins[] = {
30	{
31		.pin    = "Headphone",
32		.mask   = SND_JACK_HEADPHONE,
33	},
34	{
35		.pin    = "Headset Mic",
36		.mask   = SND_JACK_MICROPHONE,
37	},
38};
39
40int asoc_sdw_cs42l42_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai)
41{
42	struct snd_soc_card *card = rtd->card;
43	struct snd_soc_dapm_context *dapm = snd_soc_card_to_dapm(card);
44	struct asoc_sdw_mc_private *ctx = snd_soc_card_get_drvdata(card);
45	struct snd_soc_component *component;
46	struct snd_soc_jack *jack;
47	int ret;
48
49	component = dai->component;
50	card->components = devm_kasprintf(card->dev, GFP_KERNEL,
51					  "%s hs:cs42l42",
52					  card->components);
53	if (!card->components)
54		return -ENOMEM;
55
56	ret = snd_soc_dapm_add_routes(dapm, cs42l42_map,
57				      ARRAY_SIZE(cs42l42_map));
58
59	if (ret) {
60		dev_err(card->dev, "cs42l42 map addition failed: %d\n", ret);
61		return ret;
62	}
63
64	ret = snd_soc_card_jack_new_pins(rtd->card, "Headset Jack",
65					 SND_JACK_HEADSET | SND_JACK_BTN_0 |
66					 SND_JACK_BTN_1 | SND_JACK_BTN_2 |
67					 SND_JACK_BTN_3,
68					 &ctx->sdw_headset,
69					 cs42l42_jack_pins,
70					 ARRAY_SIZE(cs42l42_jack_pins));
71	if (ret) {
72		dev_err(rtd->card->dev, "Headset Jack creation failed: %d\n",
73			ret);
74		return ret;
75	}
76
77	jack = &ctx->sdw_headset;
78
79	snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
80	snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOLUMEUP);
81	snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEDOWN);
82	snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOICECOMMAND);
83
84	ret = snd_soc_component_set_jack(component, jack, NULL);
85
86	if (ret)
87		dev_err(rtd->card->dev, "Headset Jack call-back failed: %d\n",
88			ret);
89
90	return ret;
91}
92EXPORT_SYMBOL_NS(asoc_sdw_cs42l42_rtd_init, "SND_SOC_SDW_UTILS");