1 // SPDX-License-Identifier: GPL-2.0-only
2 // This file incorporates work covered by the following copyright notice:
3 // Copyright (c) 2020 Intel Corporation
4 // Copyright (c) 2024 Advanced Micro Devices, Inc.
5 //
6 // soc_sdw_maxim - Helpers to handle maxim codecs
7 // codec devices from generic machine driver
8
9 #include <linux/device.h>
10 #include <linux/errno.h>
11 #include <sound/control.h>
12 #include <sound/soc.h>
13 #include <sound/soc-acpi.h>
14 #include <sound/soc-dapm.h>
15 #include <sound/soc_sdw_utils.h>
16
17 static int maxim_part_id;
18 #define SOC_SDW_PART_ID_MAX98363 0x8363
19 #define SOC_SDW_PART_ID_MAX98373 0x8373
20
21 static const struct snd_soc_dapm_route max_98373_dapm_routes[] = {
22 { "Left Spk", NULL, "Left BE_OUT" },
23 { "Right Spk", NULL, "Right BE_OUT" },
24 };
25
asoc_sdw_maxim_spk_rtd_init(struct snd_soc_pcm_runtime * rtd,struct snd_soc_dai * dai)26 int asoc_sdw_maxim_spk_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai)
27 {
28 struct snd_soc_card *card = rtd->card;
29 int ret;
30
31 ret = snd_soc_dapm_add_routes(&card->dapm, max_98373_dapm_routes, 2);
32 if (ret)
33 dev_err(rtd->dev, "failed to add first SPK map: %d\n", ret);
34
35 return ret;
36 }
37 EXPORT_SYMBOL_NS(asoc_sdw_maxim_spk_rtd_init, "SND_SOC_SDW_UTILS");
38
asoc_sdw_mx8373_enable_spk_pin(struct snd_pcm_substream * substream,bool enable)39 static int asoc_sdw_mx8373_enable_spk_pin(struct snd_pcm_substream *substream, bool enable)
40 {
41 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
42 struct snd_soc_dai *codec_dai;
43 struct snd_soc_dai *cpu_dai;
44 int ret;
45 int j;
46
47 /* set spk pin by playback only */
48 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
49 return 0;
50
51 cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
52 for_each_rtd_codec_dais(rtd, j, codec_dai) {
53 struct snd_soc_dapm_context *dapm =
54 snd_soc_component_get_dapm(cpu_dai->component);
55 char pin_name[16];
56
57 snprintf(pin_name, ARRAY_SIZE(pin_name), "%s Spk",
58 codec_dai->component->name_prefix);
59
60 if (enable)
61 ret = snd_soc_dapm_enable_pin(dapm, pin_name);
62 else
63 ret = snd_soc_dapm_disable_pin(dapm, pin_name);
64
65 if (!ret)
66 snd_soc_dapm_sync(dapm);
67 }
68
69 return 0;
70 }
71
asoc_sdw_mx8373_prepare(struct snd_pcm_substream * substream)72 static int asoc_sdw_mx8373_prepare(struct snd_pcm_substream *substream)
73 {
74 int ret;
75
76 /* according to soc_pcm_prepare dai link prepare is called first */
77 ret = asoc_sdw_prepare(substream);
78 if (ret < 0)
79 return ret;
80
81 return asoc_sdw_mx8373_enable_spk_pin(substream, true);
82 }
83
asoc_sdw_mx8373_hw_free(struct snd_pcm_substream * substream)84 static int asoc_sdw_mx8373_hw_free(struct snd_pcm_substream *substream)
85 {
86 int ret;
87
88 /* according to soc_pcm_hw_free dai link free is called first */
89 ret = asoc_sdw_hw_free(substream);
90 if (ret < 0)
91 return ret;
92
93 return asoc_sdw_mx8373_enable_spk_pin(substream, false);
94 }
95
96 static const struct snd_soc_ops max_98373_sdw_ops = {
97 .startup = asoc_sdw_startup,
98 .prepare = asoc_sdw_mx8373_prepare,
99 .trigger = asoc_sdw_trigger,
100 .hw_params = asoc_sdw_hw_params,
101 .hw_free = asoc_sdw_mx8373_hw_free,
102 .shutdown = asoc_sdw_shutdown,
103 };
104
asoc_sdw_mx8373_sdw_late_probe(struct snd_soc_card * card)105 static int asoc_sdw_mx8373_sdw_late_probe(struct snd_soc_card *card)
106 {
107 struct snd_soc_dapm_context *dapm = &card->dapm;
108
109 /* Disable Left and Right Spk pin after boot */
110 snd_soc_dapm_disable_pin(dapm, "Left Spk");
111 snd_soc_dapm_disable_pin(dapm, "Right Spk");
112 return snd_soc_dapm_sync(dapm);
113 }
114
asoc_sdw_maxim_init(struct snd_soc_card * card,struct snd_soc_dai_link * dai_links,struct asoc_sdw_codec_info * info,bool playback)115 int asoc_sdw_maxim_init(struct snd_soc_card *card,
116 struct snd_soc_dai_link *dai_links,
117 struct asoc_sdw_codec_info *info,
118 bool playback)
119 {
120 info->amp_num++;
121
122 maxim_part_id = info->part_id;
123 switch (maxim_part_id) {
124 case SOC_SDW_PART_ID_MAX98363:
125 /* Default ops are set in function init_dai_link.
126 * called as part of function create_sdw_dailink
127 */
128 break;
129 case SOC_SDW_PART_ID_MAX98373:
130 info->codec_card_late_probe = asoc_sdw_mx8373_sdw_late_probe;
131 dai_links->ops = &max_98373_sdw_ops;
132 break;
133 default:
134 dev_err(card->dev, "Invalid maxim_part_id %#x\n", maxim_part_id);
135 return -EINVAL;
136 }
137 return 0;
138 }
139 EXPORT_SYMBOL_NS(asoc_sdw_maxim_init, "SND_SOC_SDW_UTILS");
140