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 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 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