soc_sdw_rt_mf_sdca.c

 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 */
23static const struct snd_soc_dapm_route rt712_spk_map[] = {
24	{ "Speaker", NULL, "rt712 SPOL" },
25	{ "Speaker", NULL, "rt712 SPOR" },
26};
27
28static const struct snd_soc_dapm_route rt721_spk_map[] = {
29	{ "Speaker", NULL, "rt721 SPK" },
30};
31
32static 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 */
37struct 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 */
44static 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
50static 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
59int 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	struct snd_soc_dapm_context *dapm = snd_soc_card_to_dapm(card);
63	char codec_name[CODEC_NAME_SIZE];
64	int ret;
65
66	/* acquire codec name */
67	snprintf(codec_name, CODEC_NAME_SIZE, "%s", dai->name);
68
69	/* acquire corresponding route map and size */
70	const struct codec_route_map *route_map = get_codec_route_map(codec_name);
71
72	if (!route_map) {
73		dev_err(rtd->dev, "failed to get codec name and route map\n");
74		return -EINVAL;
75	}
76
77	/* Add routes */
78	ret = snd_soc_dapm_add_routes(dapm, route_map->route_map, route_map->route_size);
79	if (ret)
80		dev_err(rtd->dev, "failed to add rt sdca spk map: %d\n", ret);
81
82	return ret;
83}
84EXPORT_SYMBOL_NS(asoc_sdw_rt_mf_sdca_spk_rtd_init, "SND_SOC_SDW_UTILS");