tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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");