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
5 /*
6 * soc_sdw_rt_mf_sdca
7 * - Helpers to handle RT Multifunction Codec from generic machine driver
8 */
9
10 #include <linux/device.h>
11 #include <linux/errno.h>
12 #include <linux/soundwire/sdw.h>
13 #include <linux/soundwire/sdw_type.h>
14 #include <sound/control.h>
15 #include <sound/soc.h>
16 #include <sound/soc-acpi.h>
17 #include <sound/soc-dapm.h>
18 #include <sound/soc_sdw_utils.h>
19
20 #define CODEC_NAME_SIZE 6
21
22 /* dapm routes for RT-SPK will be registered dynamically */
23 static const struct snd_soc_dapm_route rt712_spk_map[] = {
24 { "Speaker", NULL, "rt712 SPOL" },
25 { "Speaker", NULL, "rt712 SPOR" },
26 };
27
28 static const struct snd_soc_dapm_route rt721_spk_map[] = {
29 { "Speaker", NULL, "rt721 SPK" },
30 };
31
32 static const struct snd_soc_dapm_route rt722_spk_map[] = {
33 { "Speaker", NULL, "rt722 SPK" },
34 };
35
36 /* Structure to map codec names to respective route arrays and sizes */
37 struct codec_route_map {
38 const char *codec_name;
39 const struct snd_soc_dapm_route *route_map;
40 size_t route_size;
41 };
42
43 /* Codec route maps array */
44 static const struct codec_route_map codec_routes[] = {
45 { "rt712", rt712_spk_map, ARRAY_SIZE(rt712_spk_map) },
46 { "rt721", rt721_spk_map, ARRAY_SIZE(rt721_spk_map) },
47 { "rt722", rt722_spk_map, ARRAY_SIZE(rt722_spk_map) },
48 };
49
get_codec_route_map(const char * codec_name)50 static const struct codec_route_map *get_codec_route_map(const char *codec_name)
51 {
52 for (size_t i = 0; i < ARRAY_SIZE(codec_routes); i++) {
53 if (strcmp(codec_routes[i].codec_name, codec_name) == 0)
54 return &codec_routes[i];
55 }
56 return NULL;
57 }
58
asoc_sdw_rt_mf_sdca_spk_rtd_init(struct snd_soc_pcm_runtime * rtd,struct snd_soc_dai * dai)59 int asoc_sdw_rt_mf_sdca_spk_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai)
60 {
61 struct snd_soc_card *card = rtd->card;
62 char codec_name[CODEC_NAME_SIZE];
63 int ret;
64
65 /* acquire codec name */
66 snprintf(codec_name, CODEC_NAME_SIZE, "%s", dai->name);
67
68 /* acquire corresponding route map and size */
69 const struct codec_route_map *route_map = get_codec_route_map(codec_name);
70
71 if (!route_map) {
72 dev_err(rtd->dev, "failed to get codec name and route map\n");
73 return -EINVAL;
74 }
75
76 /* Update card components */
77 card->components = devm_kasprintf(card->dev, GFP_KERNEL,
78 "%s spk:%s",
79 card->components, codec_name);
80 if (!card->components)
81 return -ENOMEM;
82
83 /* Add routes */
84 ret = snd_soc_dapm_add_routes(&card->dapm, route_map->route_map, route_map->route_size);
85 if (ret)
86 dev_err(rtd->dev, "failed to add rt sdca spk map: %d\n", ret);
87
88 return ret;
89 }
90 EXPORT_SYMBOL_NS(asoc_sdw_rt_mf_sdca_spk_rtd_init, "SND_SOC_SDW_UTILS");
91