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
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 card->components = devm_kasprintf(card->dev, GFP_KERNEL,
32 "%s spk:mx%04x",
33 card->components, maxim_part_id);
34 if (!card->components)
35 return -ENOMEM;
36
37 dev_dbg(card->dev, "soundwire maxim card components assigned : %s\n",
38 card->components);
39
40 ret = snd_soc_dapm_add_routes(&card->dapm, max_98373_dapm_routes, 2);
41 if (ret)
42 dev_err(rtd->dev, "failed to add first SPK map: %d\n", ret);
43
44 return ret;
45 }
46 EXPORT_SYMBOL_NS(asoc_sdw_maxim_spk_rtd_init, SND_SOC_SDW_UTILS);
47
48 static int asoc_sdw_mx8373_enable_spk_pin(struct snd_pcm_substream *substream, bool enable)
49 {
50 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
51 struct snd_soc_dai *codec_dai;
52 struct snd_soc_dai *cpu_dai;
53 int ret;
54 int j;
55
56 /* set spk pin by playback only */
57 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
58 return 0;
59
60 cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
61 for_each_rtd_codec_dais(rtd, j, codec_dai) {
62 struct snd_soc_dapm_context *dapm =
63 snd_soc_component_get_dapm(cpu_dai->component);
64 char pin_name[16];
65
66 snprintf(pin_name, ARRAY_SIZE(pin_name), "%s Spk",
67 codec_dai->component->name_prefix);
68
69 if (enable)
70 ret = snd_soc_dapm_enable_pin(dapm, pin_name);
71 else
72 ret = snd_soc_dapm_disable_pin(dapm, pin_name);
73
74 if (!ret)
75 snd_soc_dapm_sync(dapm);
76 }
77
78 return 0;
79 }
80
81 static int asoc_sdw_mx8373_prepare(struct snd_pcm_substream *substream)
82 {
83 int ret;
84
85 /* according to soc_pcm_prepare dai link prepare is called first */
86 ret = asoc_sdw_prepare(substream);
87 if (ret < 0)
88 return ret;
89
90 return asoc_sdw_mx8373_enable_spk_pin(substream, true);
91 }
92
93 static int asoc_sdw_mx8373_hw_free(struct snd_pcm_substream *substream)
94 {
95 int ret;
96
97 /* according to soc_pcm_hw_free dai link free is called first */
98 ret = asoc_sdw_hw_free(substream);
99 if (ret < 0)
100 return ret;
101
102 return asoc_sdw_mx8373_enable_spk_pin(substream, false);
103 }
104
105 static const struct snd_soc_ops max_98373_sdw_ops = {
106 .startup = asoc_sdw_startup,
107 .prepare = asoc_sdw_mx8373_prepare,
108 .trigger = asoc_sdw_trigger,
109 .hw_params = asoc_sdw_hw_params,
110 .hw_free = asoc_sdw_mx8373_hw_free,
111 .shutdown = asoc_sdw_shutdown,
112 };
113
114 static int asoc_sdw_mx8373_sdw_late_probe(struct snd_soc_card *card)
115 {
116 struct snd_soc_dapm_context *dapm = &card->dapm;
117
118 /* Disable Left and Right Spk pin after boot */
119 snd_soc_dapm_disable_pin(dapm, "Left Spk");
120 snd_soc_dapm_disable_pin(dapm, "Right Spk");
121 return snd_soc_dapm_sync(dapm);
122 }
123
124 int asoc_sdw_maxim_init(struct snd_soc_card *card,
125 struct snd_soc_dai_link *dai_links,
126 struct asoc_sdw_codec_info *info,
127 bool playback)
128 {
129 info->amp_num++;
130
131 maxim_part_id = info->part_id;
132 switch (maxim_part_id) {
133 case SOC_SDW_PART_ID_MAX98363:
134 /* Default ops are set in function init_dai_link.
135 * called as part of function create_sdw_dailink
136 */
137 break;
138 case SOC_SDW_PART_ID_MAX98373:
139 info->codec_card_late_probe = asoc_sdw_mx8373_sdw_late_probe;
140 dai_links->ops = &max_98373_sdw_ops;
141 break;
142 default:
143 dev_err(card->dev, "Invalid maxim_part_id %#x\n", maxim_part_id);
144 return -EINVAL;
145 }
146 return 0;
147 }
148 EXPORT_SYMBOL_NS(asoc_sdw_maxim_init, SND_SOC_SDW_UTILS);
149
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