921f42caf7e09d0547a69e8aa460ec5cf3181d9f
[linux-2.6-block.git] / sound / soc / intel / avs / boards / max98357a.c
1 // SPDX-License-Identifier: GPL-2.0-only
2 //
3 // Copyright(c) 2021-2022 Intel Corporation. All rights reserved.
4 //
5 // Authors: Cezary Rojewski <cezary.rojewski@intel.com>
6 //          Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>
7 //
8
9 #include <linux/module.h>
10 #include <linux/platform_device.h>
11 #include <sound/soc.h>
12 #include <sound/soc-acpi.h>
13 #include <sound/soc-dapm.h>
14
15 static const struct snd_kcontrol_new card_controls[] = {
16         SOC_DAPM_PIN_SWITCH("Spk"),
17 };
18
19 static const struct snd_soc_dapm_widget card_widgets[] = {
20         SND_SOC_DAPM_SPK("Spk", NULL),
21 };
22
23 static const struct snd_soc_dapm_route card_base_routes[] = {
24         { "Spk", NULL, "Speaker" },
25 };
26
27 static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port,
28                                struct snd_soc_dai_link **dai_link)
29 {
30         struct snd_soc_dai_link_component *platform;
31         struct snd_soc_dai_link *dl;
32
33         dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL);
34         platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);
35         if (!dl || !platform)
36                 return -ENOMEM;
37
38         platform->name = platform_name;
39
40         dl->name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d-Codec", ssp_port);
41         dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL);
42         dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs), GFP_KERNEL);
43         if (!dl->name || !dl->cpus || !dl->codecs)
44                 return -ENOMEM;
45
46         dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d Pin", ssp_port);
47         dl->codecs->name = devm_kasprintf(dev, GFP_KERNEL, "MX98357A:00");
48         dl->codecs->dai_name = devm_kasprintf(dev, GFP_KERNEL, "HiFi");
49         if (!dl->cpus->dai_name || !dl->codecs->name || !dl->codecs->dai_name)
50                 return -ENOMEM;
51
52         dl->num_cpus = 1;
53         dl->num_codecs = 1;
54         dl->platforms = platform;
55         dl->num_platforms = 1;
56         dl->id = 0;
57         dl->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS;
58         dl->nonatomic = 1;
59         dl->no_pcm = 1;
60         dl->dpcm_playback = 1;
61
62         *dai_link = dl;
63
64         return 0;
65 }
66
67 static int avs_create_dapm_routes(struct device *dev, int ssp_port,
68                                   struct snd_soc_dapm_route **routes, int *num_routes)
69 {
70         struct snd_soc_dapm_route *dr;
71         const int num_base = ARRAY_SIZE(card_base_routes);
72         const int num_dr = num_base + 1;
73         int idx;
74
75         dr = devm_kcalloc(dev, num_dr, sizeof(*dr), GFP_KERNEL);
76         if (!dr)
77                 return -ENOMEM;
78
79         memcpy(dr, card_base_routes, num_base * sizeof(*dr));
80
81         idx = num_base;
82         dr[idx].sink = devm_kasprintf(dev, GFP_KERNEL, "HiFi Playback");
83         dr[idx].source = devm_kasprintf(dev, GFP_KERNEL, "ssp%d Tx", ssp_port);
84         if (!dr[idx].sink || !dr[idx].source)
85                 return -ENOMEM;
86
87         *routes = dr;
88         *num_routes = num_dr;
89
90         return 0;
91 }
92
93 static int avs_max98357a_probe(struct platform_device *pdev)
94 {
95         struct snd_soc_dapm_route *routes;
96         struct snd_soc_dai_link *dai_link;
97         struct snd_soc_acpi_mach *mach;
98         struct snd_soc_card *card;
99         struct device *dev = &pdev->dev;
100         const char *pname;
101         int num_routes, ssp_port, ret;
102
103         mach = dev_get_platdata(dev);
104         pname = mach->mach_params.platform;
105         ssp_port = __ffs(mach->mach_params.i2s_link_mask);
106
107         ret = avs_create_dai_link(dev, pname, ssp_port, &dai_link);
108         if (ret) {
109                 dev_err(dev, "Failed to create dai link: %d", ret);
110                 return ret;
111         }
112
113         ret = avs_create_dapm_routes(dev, ssp_port, &routes, &num_routes);
114         if (ret) {
115                 dev_err(dev, "Failed to create dapm routes: %d", ret);
116                 return ret;
117         }
118
119         card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
120         if (!card)
121                 return -ENOMEM;
122
123         card->name = "avs_max98357a";
124         card->dev = dev;
125         card->owner = THIS_MODULE;
126         card->dai_link = dai_link;
127         card->num_links = 1;
128         card->controls = card_controls;
129         card->num_controls = ARRAY_SIZE(card_controls);
130         card->dapm_widgets = card_widgets;
131         card->num_dapm_widgets = ARRAY_SIZE(card_widgets);
132         card->dapm_routes = routes;
133         card->num_dapm_routes = num_routes;
134         card->fully_routed = true;
135
136         ret = snd_soc_fixup_dai_links_platform_name(card, pname);
137         if (ret)
138                 return ret;
139
140         return devm_snd_soc_register_card(dev, card);
141 }
142
143 static struct platform_driver avs_max98357a_driver = {
144         .probe = avs_max98357a_probe,
145         .driver = {
146                 .name = "avs_max98357a",
147                 .pm = &snd_soc_pm_ops,
148         },
149 };
150
151 module_platform_driver(avs_max98357a_driver)
152
153 MODULE_LICENSE("GPL");
154 MODULE_ALIAS("platform:avs_max98357a");