1 // SPDX-License-Identifier: GPL-2.0-only
2 //
3 // Copyright(c) 2024-2025 Intel Corporation
4 //
5 // Author: Cezary Rojewski <cezary.rojewski@intel.com>
6 //
7
8 #include <linux/module.h>
9 #include <linux/platform_device.h>
10 #include <sound/core.h>
11 #include <sound/pcm.h>
12 #include <sound/pcm_params.h>
13 #include <sound/soc.h>
14
15 static const struct snd_soc_dapm_widget card_widgets[] = {
16 SND_SOC_DAPM_HP("CPB Stereo HP 1", NULL),
17 SND_SOC_DAPM_HP("CPB Stereo HP 2", NULL),
18 SND_SOC_DAPM_HP("CPB Stereo HP 3", NULL),
19 SND_SOC_DAPM_LINE("CPB Line Out", NULL),
20 SND_SOC_DAPM_MIC("CPB Stereo Mic 1", NULL),
21 SND_SOC_DAPM_MIC("CPB Stereo Mic 2", NULL),
22 SND_SOC_DAPM_LINE("CPB Line In", NULL),
23 };
24
25 static const struct snd_soc_dapm_route card_routes[] = {
26 { "CPB Stereo HP 1", NULL, "AOUT1L" },
27 { "CPB Stereo HP 1", NULL, "AOUT1R" },
28 { "CPB Stereo HP 2", NULL, "AOUT2L" },
29 { "CPB Stereo HP 2", NULL, "AOUT2R" },
30 { "CPB Stereo HP 3", NULL, "AOUT3L" },
31 { "CPB Stereo HP 3", NULL, "AOUT3R" },
32 { "CPB Line Out", NULL, "AOUT4L" },
33 { "CPB Line Out", NULL, "AOUT4R" },
34
35 { "AIN1L", NULL, "CPB Stereo Mic 1" },
36 { "AIN1R", NULL, "CPB Stereo Mic 1" },
37 { "AIN2L", NULL, "CPB Stereo Mic 2" },
38 { "AIN2R", NULL, "CPB Stereo Mic 2" },
39 { "AIN3L", NULL, "CPB Line In" },
40 { "AIN3R", NULL, "CPB Line In" },
41 };
42
avs_pcm3168a_be_fixup(struct snd_soc_pcm_runtime * runtime,struct snd_pcm_hw_params * params)43 static int avs_pcm3168a_be_fixup(struct snd_soc_pcm_runtime *runtime,
44 struct snd_pcm_hw_params *params)
45 {
46 struct snd_mask *fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
47
48 /* Set SSP to 24 bit. */
49 snd_mask_none(fmt);
50 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_LE);
51
52 return 0;
53 }
54
55 SND_SOC_DAILINK_DEF(pcm3168a_dac,
56 DAILINK_COMP_ARRAY(COMP_CODEC("i2c-PCM3168A:00", "pcm3168a-dac")));
57 SND_SOC_DAILINK_DEF(pcm3168a_adc,
58 DAILINK_COMP_ARRAY(COMP_CODEC("i2c-PCM3168A:00", "pcm3168a-adc")));
59 SND_SOC_DAILINK_DEF(cpu_ssp0, DAILINK_COMP_ARRAY(COMP_CPU("SSP0 Pin")));
60 SND_SOC_DAILINK_DEF(cpu_ssp2, DAILINK_COMP_ARRAY(COMP_CPU("SSP2 Pin")));
61
avs_create_dai_links(struct device * dev,struct snd_soc_dai_link ** links,int * num_links)62 static int avs_create_dai_links(struct device *dev, struct snd_soc_dai_link **links, int *num_links)
63 {
64 struct snd_soc_dai_link_component *platform;
65 struct snd_soc_dai_link *dl;
66 const int num_dl = 2;
67
68 dl = devm_kcalloc(dev, num_dl, sizeof(*dl), GFP_KERNEL);
69 platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);
70 if (!dl || !platform)
71 return -ENOMEM;
72
73 platform->name = dev_name(dev);
74 dl[0].num_cpus = 1;
75 dl[0].num_codecs = 1;
76 dl[0].platforms = platform;
77 dl[0].num_platforms = 1;
78 dl[0].dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBP_CFP;
79 dl[0].be_hw_params_fixup = avs_pcm3168a_be_fixup;
80 dl[0].nonatomic = 1;
81 dl[0].no_pcm = 1;
82 memcpy(&dl[1], &dl[0], sizeof(*dl));
83
84 dl[0].name = "SSP0-Codec-dac";
85 dl[0].cpus = cpu_ssp0;
86 dl[0].codecs = pcm3168a_dac;
87 dl[1].name = "SSP2-Codec-adc";
88 dl[1].cpus = cpu_ssp2;
89 dl[1].codecs = pcm3168a_adc;
90
91 *links = dl;
92 *num_links = num_dl;
93 return 0;
94 }
95
avs_pcm3168a_probe(struct platform_device * pdev)96 static int avs_pcm3168a_probe(struct platform_device *pdev)
97 {
98 struct device *dev = &pdev->dev;
99 struct snd_soc_card *card;
100 int ret;
101
102 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
103 if (!card)
104 return -ENOMEM;
105
106 ret = avs_create_dai_links(dev, &card->dai_link, &card->num_links);
107 if (ret)
108 return ret;
109
110 card->name = "avs_pcm3168a";
111 card->dev = dev;
112 card->owner = THIS_MODULE;
113 card->dapm_widgets = card_widgets;
114 card->num_dapm_widgets = ARRAY_SIZE(card_widgets);
115 card->dapm_routes = card_routes;
116 card->num_dapm_routes = ARRAY_SIZE(card_routes);
117 card->fully_routed = true;
118
119 return devm_snd_soc_register_card(dev, card);
120 }
121
122 static const struct platform_device_id avs_pcm3168a_driver_ids[] = {
123 {
124 .name = "avs_pcm3168a",
125 },
126 {},
127 };
128 MODULE_DEVICE_TABLE(platform, avs_pcm3168a_driver_ids);
129
130 static struct platform_driver avs_pcm3168a_driver = {
131 .probe = avs_pcm3168a_probe,
132 .driver = {
133 .name = "avs_pcm3168a",
134 .pm = &snd_soc_pm_ops,
135 },
136 .id_table = avs_pcm3168a_driver_ids,
137 };
138
139 module_platform_driver(avs_pcm3168a_driver);
140
141 MODULE_DESCRIPTION("Intel pcm3168a machine driver");
142 MODULE_AUTHOR("Cezary Rojewski <cezary.rojewski@intel.com>");
143 MODULE_LICENSE("GPL");
144