1 // SPDX-License-Identifier: GPL-2.0-only
2 // This file incorporates work covered by the following copyright notice:
3 // Copyright (c) 2024 Intel Corporation
4 // Copyright (c) 2024 Advanced Micro Devices, Inc.
5
6 /*
7 * soc_sdw_bridge_cs35l56 - codec helper functions for handling CS35L56 Smart AMP
8 */
9
10 #include <linux/module.h>
11 #include <linux/platform_device.h>
12 #include <sound/core.h>
13 #include <sound/pcm.h>
14 #include <sound/pcm_params.h>
15 #include <sound/soc.h>
16 #include <sound/soc-acpi.h>
17 #include <sound/soc_sdw_utils.h>
18
19 static const struct snd_soc_dapm_widget bridge_widgets[] = {
20 SND_SOC_DAPM_SPK("Bridge Speaker", NULL),
21 };
22
23 static const struct snd_soc_dapm_route bridge_map[] = {
24 {"Bridge Speaker", NULL, "AMPL SPK"},
25 {"Bridge Speaker", NULL, "AMPR SPK"},
26 };
27
28 static const char * const bridge_cs35l56_name_prefixes[] = {
29 "AMPL",
30 "AMPR",
31 };
32
33 static int asoc_sdw_bridge_cs35l56_asp_init(struct snd_soc_pcm_runtime *rtd)
34 {
35 struct snd_soc_card *card = rtd->card;
36 int i, ret;
37 unsigned int rx_mask = 3; // ASP RX1, RX2
38 unsigned int tx_mask = 3; // ASP TX1, TX2
39 struct snd_soc_dai *codec_dai;
40 struct snd_soc_dai *cpu_dai;
41
42 card->components = devm_kasprintf(card->dev, GFP_KERNEL,
43 "%s spk:cs35l56-bridge",
44 card->components);
45 if (!card->components)
46 return -ENOMEM;
47
48 ret = snd_soc_dapm_new_controls(&card->dapm, bridge_widgets,
49 ARRAY_SIZE(bridge_widgets));
50 if (ret) {
51 dev_err(card->dev, "widgets addition failed: %d\n", ret);
52 return ret;
53 }
54
55 ret = snd_soc_dapm_add_routes(&card->dapm, bridge_map, ARRAY_SIZE(bridge_map));
56 if (ret) {
57 dev_err(card->dev, "map addition failed: %d\n", ret);
58 return ret;
59 }
60
61 /* 4 x 16-bit sample slots and FSYNC=48000, BCLK=3.072 MHz */
62 for_each_rtd_codec_dais(rtd, i, codec_dai) {
63 ret = snd_soc_dai_set_tdm_slot(codec_dai, tx_mask, rx_mask, 4, 16);
64 if (ret < 0)
65 return ret;
66
67 ret = snd_soc_dai_set_sysclk(codec_dai, 0, 3072000, SND_SOC_CLOCK_IN);
68 if (ret < 0)
69 return ret;
70 }
71
72 for_each_rtd_cpu_dais(rtd, i, cpu_dai) {
73 ret = snd_soc_dai_set_tdm_slot(cpu_dai, tx_mask, rx_mask, 4, 16);
74 if (ret < 0)
75 return ret;
76 }
77
78 return 0;
79 }
80
81 static const struct snd_soc_pcm_stream asoc_sdw_bridge_params = {
82 .formats = SNDRV_PCM_FMTBIT_S16_LE,
83 .rate_min = 48000,
84 .rate_max = 48000,
85 .channels_min = 2,
86 .channels_max = 2,
87 };
88
89 SND_SOC_DAILINK_DEFS(asoc_sdw_bridge_dai,
90 DAILINK_COMP_ARRAY(COMP_CODEC("cs42l43-codec", "cs42l43-asp")),
91 DAILINK_COMP_ARRAY(COMP_CODEC("spi-cs35l56-left", "cs35l56-asp1"),
92 COMP_CODEC("spi-cs35l56-right", "cs35l56-asp1")),
93 DAILINK_COMP_ARRAY(COMP_PLATFORM("cs42l43-codec")));
94
95 static const struct snd_soc_dai_link bridge_dai_template = {
96 .name = "cs42l43-cs35l56",
97 .init = asoc_sdw_bridge_cs35l56_asp_init,
98 .c2c_params = &asoc_sdw_bridge_params,
99 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_CBC_CFC,
100 SND_SOC_DAILINK_REG(asoc_sdw_bridge_dai),
101 };
102
103 int asoc_sdw_bridge_cs35l56_count_sidecar(struct snd_soc_card *card,
104 int *num_dais, int *num_devs)
105 {
106 struct asoc_sdw_mc_private *ctx = snd_soc_card_get_drvdata(card);
107
108 if (ctx->mc_quirk & SOC_SDW_SIDECAR_AMPS) {
109 (*num_dais)++;
110 (*num_devs) += ARRAY_SIZE(bridge_cs35l56_name_prefixes);
111 }
112
113 return 0;
114 }
115 EXPORT_SYMBOL_NS(asoc_sdw_bridge_cs35l56_count_sidecar, SND_SOC_SDW_UTILS);
116
117 int asoc_sdw_bridge_cs35l56_add_sidecar(struct snd_soc_card *card,
118 struct snd_soc_dai_link **dai_links,
119 struct snd_soc_codec_conf **codec_conf)
120 {
121 struct asoc_sdw_mc_private *ctx = snd_soc_card_get_drvdata(card);
122
123 if (ctx->mc_quirk & SOC_SDW_SIDECAR_AMPS) {
124 **dai_links = bridge_dai_template;
125
126 for (int i = 0; i < ARRAY_SIZE(bridge_cs35l56_name_prefixes); i++) {
127 (*codec_conf)->dlc.name = (*dai_links)->codecs[i].name;
128 (*codec_conf)->name_prefix = bridge_cs35l56_name_prefixes[i];
129 (*codec_conf)++;
130 }
131
132 (*dai_links)++;
133 }
134
135 return 0;
136 }
137 EXPORT_SYMBOL_NS(asoc_sdw_bridge_cs35l56_add_sidecar, SND_SOC_SDW_UTILS);
138
139 int asoc_sdw_bridge_cs35l56_spk_init(struct snd_soc_card *card,
140 struct snd_soc_dai_link *dai_links,
141 struct asoc_sdw_codec_info *info,
142 bool playback)
143 {
144 struct asoc_sdw_mc_private *ctx = snd_soc_card_get_drvdata(card);
145
146 if (ctx->mc_quirk & SOC_SDW_SIDECAR_AMPS)
147 info->amp_num += ARRAY_SIZE(bridge_cs35l56_name_prefixes);
148
149 return 0;
150 }
151 EXPORT_SYMBOL_NS(asoc_sdw_bridge_cs35l56_spk_init, SND_SOC_SDW_UTILS);
152
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