1 // SPDX-License-Identifier: GPL-2.0-only
2 // Copyright (c) 2023 Intel Corporation
3
4 /*
5 * sof_sdw_cs_amp - Helpers to handle CS35L56 from generic machine driver
6 */
7
8 #include <linux/device.h>
9 #include <linux/errno.h>
10 #include <sound/soc.h>
11 #include <sound/soc-acpi.h>
12 #include <sound/soc-dai.h>
13 #include "sof_sdw_common.h"
14
15 #define CODEC_NAME_SIZE 8
16
17 static const struct snd_soc_dapm_widget sof_widgets[] = {
18 SND_SOC_DAPM_SPK("Speakers", NULL),
19 };
20
cs_spk_init(struct snd_soc_pcm_runtime * rtd)21 static int cs_spk_init(struct snd_soc_pcm_runtime *rtd)
22 {
23 const char *dai_name = rtd->dai_link->codecs->dai_name;
24 struct snd_soc_card *card = rtd->card;
25 char codec_name[CODEC_NAME_SIZE];
26 char widget_name[16];
27 struct snd_soc_dapm_route route = { "Speakers", NULL, widget_name };
28 struct snd_soc_dai *codec_dai;
29 int i, ret;
30
31 snprintf(codec_name, CODEC_NAME_SIZE, "%s", dai_name);
32 card->components = devm_kasprintf(card->dev, GFP_KERNEL,
33 "%s spk:%s",
34 card->components, codec_name);
35 if (!card->components)
36 return -ENOMEM;
37
38 ret = snd_soc_dapm_new_controls(&card->dapm, sof_widgets,
39 ARRAY_SIZE(sof_widgets));
40 if (ret) {
41 dev_err(card->dev, "widgets addition failed: %d\n", ret);
42 return ret;
43 }
44
45 for_each_rtd_codec_dais(rtd, i, codec_dai) {
46 if (!strstr(codec_dai->name, "cs35l56"))
47 continue;
48
49 snprintf(widget_name, sizeof(widget_name), "%s SPK",
50 codec_dai->component->name_prefix);
51 ret = snd_soc_dapm_add_routes(&card->dapm, &route, 1);
52 if (ret)
53 return ret;
54 }
55
56 return 0;
57 }
58
sof_sdw_cs_amp_init(struct snd_soc_card * card,const struct snd_soc_acpi_link_adr * link,struct snd_soc_dai_link * dai_links,struct sof_sdw_codec_info * info,bool playback)59 int sof_sdw_cs_amp_init(struct snd_soc_card *card,
60 const struct snd_soc_acpi_link_adr *link,
61 struct snd_soc_dai_link *dai_links,
62 struct sof_sdw_codec_info *info,
63 bool playback)
64 {
65 /* Do init on playback link only. */
66 if (!playback)
67 return 0;
68
69 info->amp_num++;
70 dai_links->init = cs_spk_init;
71
72 return 0;
73 }
74