sof_sdw_max98373.c (3619B)
1// SPDX-License-Identifier: GPL-2.0-only 2// Copyright (c) 2020 Intel Corporation 3// 4// sof_sdw_max98373 - Helpers to handle 2x MAX98373 5// codec devices from generic machine driver 6 7#include <linux/device.h> 8#include <linux/errno.h> 9#include <sound/control.h> 10#include <sound/soc.h> 11#include <sound/soc-acpi.h> 12#include <sound/soc-dapm.h> 13#include "sof_sdw_common.h" 14#include "sof_maxim_common.h" 15 16static const struct snd_soc_dapm_widget mx8373_widgets[] = { 17 SND_SOC_DAPM_SPK("Left Spk", NULL), 18 SND_SOC_DAPM_SPK("Right Spk", NULL), 19}; 20 21static const struct snd_kcontrol_new mx8373_controls[] = { 22 SOC_DAPM_PIN_SWITCH("Left Spk"), 23 SOC_DAPM_PIN_SWITCH("Right Spk"), 24}; 25 26static int spk_init(struct snd_soc_pcm_runtime *rtd) 27{ 28 struct snd_soc_card *card = rtd->card; 29 int ret; 30 31 card->components = devm_kasprintf(card->dev, GFP_KERNEL, 32 "%s spk:mx8373", 33 card->components); 34 if (!card->components) 35 return -ENOMEM; 36 37 ret = snd_soc_add_card_controls(card, mx8373_controls, 38 ARRAY_SIZE(mx8373_controls)); 39 if (ret) { 40 dev_err(card->dev, "mx8373 ctrls addition failed: %d\n", ret); 41 return ret; 42 } 43 44 ret = snd_soc_dapm_new_controls(&card->dapm, mx8373_widgets, 45 ARRAY_SIZE(mx8373_widgets)); 46 if (ret) { 47 dev_err(card->dev, "mx8373 widgets addition failed: %d\n", ret); 48 return ret; 49 } 50 51 ret = snd_soc_dapm_add_routes(&card->dapm, max_98373_dapm_routes, 2); 52 if (ret) 53 dev_err(rtd->dev, "failed to add first SPK map: %d\n", ret); 54 55 return ret; 56} 57 58static int mx8373_enable_spk_pin(struct snd_pcm_substream *substream, bool enable) 59{ 60 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); 61 struct snd_soc_dai *codec_dai; 62 struct snd_soc_dai *cpu_dai; 63 int ret; 64 int j; 65 66 /* set spk pin by playback only */ 67 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) 68 return 0; 69 70 cpu_dai = asoc_rtd_to_cpu(rtd, 0); 71 for_each_rtd_codec_dais(rtd, j, codec_dai) { 72 struct snd_soc_dapm_context *dapm = 73 snd_soc_component_get_dapm(cpu_dai->component); 74 char pin_name[16]; 75 76 snprintf(pin_name, ARRAY_SIZE(pin_name), "%s Spk", 77 codec_dai->component->name_prefix); 78 79 if (enable) 80 ret = snd_soc_dapm_enable_pin(dapm, pin_name); 81 else 82 ret = snd_soc_dapm_disable_pin(dapm, pin_name); 83 84 if (!ret) 85 snd_soc_dapm_sync(dapm); 86 } 87 88 return 0; 89} 90 91static int mx8373_sdw_prepare(struct snd_pcm_substream *substream) 92{ 93 int ret; 94 95 /* according to soc_pcm_prepare dai link prepare is called first */ 96 ret = sdw_prepare(substream); 97 if (ret < 0) 98 return ret; 99 100 return mx8373_enable_spk_pin(substream, true); 101} 102 103static int mx8373_sdw_hw_free(struct snd_pcm_substream *substream) 104{ 105 int ret; 106 107 /* according to soc_pcm_hw_free dai link free is called first */ 108 ret = sdw_hw_free(substream); 109 if (ret < 0) 110 return ret; 111 112 return mx8373_enable_spk_pin(substream, false); 113} 114 115static const struct snd_soc_ops max_98373_sdw_ops = { 116 .startup = sdw_startup, 117 .prepare = mx8373_sdw_prepare, 118 .trigger = sdw_trigger, 119 .hw_free = mx8373_sdw_hw_free, 120 .shutdown = sdw_shutdown, 121}; 122 123int sof_sdw_mx8373_init(struct snd_soc_card *card, 124 const struct snd_soc_acpi_link_adr *link, 125 struct snd_soc_dai_link *dai_links, 126 struct sof_sdw_codec_info *info, 127 bool playback) 128{ 129 info->amp_num++; 130 if (info->amp_num == 2) 131 dai_links->init = spk_init; 132 133 info->late_probe = true; 134 135 dai_links->ops = &max_98373_sdw_ops; 136 137 return 0; 138} 139 140int sof_sdw_mx8373_late_probe(struct snd_soc_card *card) 141{ 142 struct snd_soc_dapm_context *dapm = &card->dapm; 143 144 /* Disable Left and Right Spk pin after boot */ 145 snd_soc_dapm_disable_pin(dapm, "Left Spk"); 146 snd_soc_dapm_disable_pin(dapm, "Right Spk"); 147 return snd_soc_dapm_sync(dapm); 148}