1// SPDX-License-Identifier: GPL-2.0-only 2// 3// Copyright(c) 2022 Intel Corporation. All rights reserved. 4// 5// Authors: Cezary Rojewski <cezary.rojewski@intel.com> 6// Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com> 7// 8 9#include <linux/module.h> 10#include <linux/platform_device.h> 11#include <sound/pcm_params.h> 12#include <sound/soc.h> 13#include <sound/soc-acpi.h> 14#include <sound/soc-dapm.h> 15 16#define MAX98373_DEV0_NAME "i2c-MX98373:00" 17#define MAX98373_DEV1_NAME "i2c-MX98373:01" 18#define MAX98373_CODEC_NAME "max98373-aif1" 19 20static struct snd_soc_codec_conf card_codec_conf[] = { 21 { 22 .dlc = COMP_CODEC_CONF(MAX98373_DEV0_NAME), 23 .name_prefix = "Right", 24 }, 25 { 26 .dlc = COMP_CODEC_CONF(MAX98373_DEV1_NAME), 27 .name_prefix = "Left", 28 }, 29}; 30 31static const struct snd_kcontrol_new card_controls[] = { 32 SOC_DAPM_PIN_SWITCH("Left Spk"), 33 SOC_DAPM_PIN_SWITCH("Right Spk"), 34}; 35 36static const struct snd_soc_dapm_widget card_widgets[] = { 37 SND_SOC_DAPM_SPK("Left Spk", NULL), 38 SND_SOC_DAPM_SPK("Right Spk", NULL), 39}; 40 41static const struct snd_soc_dapm_route card_base_routes[] = { 42 { "Left Spk", NULL, "Left BE_OUT" }, 43 { "Right Spk", NULL, "Right BE_OUT" }, 44}; 45 46static int 47avs_max98373_be_fixup(struct snd_soc_pcm_runtime *runrime, struct snd_pcm_hw_params *params) 48{ 49 struct snd_interval *rate, *channels; 50 struct snd_mask *fmt; 51 52 rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); 53 channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); 54 fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); 55 56 /* The ADSP will convert the FE rate to 48k, stereo */ 57 rate->min = rate->max = 48000; 58 channels->min = channels->max = 2; 59 60 /* set SSP0 to 16 bit */ 61 snd_mask_none(fmt); 62 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE); 63 return 0; 64} 65 66static int avs_max98373_hw_params(struct snd_pcm_substream *substream, 67 struct snd_pcm_hw_params *params) 68{ 69 struct snd_soc_pcm_runtime *runtime = asoc_substream_to_rtd(substream); 70 struct snd_soc_dai *codec_dai; 71 int ret, i; 72 73 for_each_rtd_codec_dais(runtime, i, codec_dai) { 74 if (!strcmp(codec_dai->component->name, MAX98373_DEV0_NAME)) { 75 ret = snd_soc_dai_set_tdm_slot(codec_dai, 0x30, 3, 8, 16); 76 if (ret < 0) { 77 dev_err(runtime->dev, "DEV0 TDM slot err:%d\n", ret); 78 return ret; 79 } 80 } 81 if (!strcmp(codec_dai->component->name, MAX98373_DEV1_NAME)) { 82 ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xC0, 3, 8, 16); 83 if (ret < 0) { 84 dev_err(runtime->dev, "DEV1 TDM slot err:%d\n", ret); 85 return ret; 86 } 87 } 88 } 89 90 return 0; 91} 92 93static const struct snd_soc_ops avs_max98373_ops = { 94 .hw_params = avs_max98373_hw_params, 95}; 96 97static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port, 98 struct snd_soc_dai_link **dai_link) 99{ 100 struct snd_soc_dai_link_component *platform; 101 struct snd_soc_dai_link *dl; 102 103 dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL); 104 platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL); 105 if (!dl || !platform) 106 return -ENOMEM; 107 108 platform->name = platform_name; 109 110 dl->name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d-Codec", ssp_port); 111 dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL); 112 dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs) * 2, GFP_KERNEL); 113 if (!dl->name || !dl->cpus || !dl->codecs) 114 return -ENOMEM; 115 116 dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d Pin", ssp_port); 117 dl->codecs[0].name = devm_kasprintf(dev, GFP_KERNEL, MAX98373_DEV0_NAME); 118 dl->codecs[0].dai_name = devm_kasprintf(dev, GFP_KERNEL, MAX98373_CODEC_NAME); 119 dl->codecs[1].name = devm_kasprintf(dev, GFP_KERNEL, MAX98373_DEV1_NAME); 120 dl->codecs[1].dai_name = devm_kasprintf(dev, GFP_KERNEL, MAX98373_CODEC_NAME); 121 if (!dl->cpus->dai_name || !dl->codecs[0].name || !dl->codecs[0].dai_name || 122 !dl->codecs[1].name || !dl->codecs[1].dai_name) 123 return -ENOMEM; 124 125 dl->num_cpus = 1; 126 dl->num_codecs = 2; 127 dl->platforms = platform; 128 dl->num_platforms = 1; 129 dl->id = 0; 130 dl->dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBC_CFC; 131 dl->be_hw_params_fixup = avs_max98373_be_fixup; 132 dl->nonatomic = 1; 133 dl->no_pcm = 1; 134 dl->dpcm_capture = 1; 135 dl->dpcm_playback = 1; 136 dl->ignore_pmdown_time = 1; 137 dl->ops = &avs_max98373_ops; 138 139 *dai_link = dl; 140 141 return 0; 142} 143 144static int avs_max98373_probe(struct platform_device *pdev) 145{ 146 struct snd_soc_dai_link *dai_link; 147 struct snd_soc_acpi_mach *mach; 148 struct snd_soc_card *card; 149 struct device *dev = &pdev->dev; 150 const char *pname; 151 int ssp_port, ret; 152 153 mach = dev_get_platdata(dev); 154 pname = mach->mach_params.platform; 155 ssp_port = __ffs(mach->mach_params.i2s_link_mask); 156 157 ret = avs_create_dai_link(dev, pname, ssp_port, &dai_link); 158 if (ret) { 159 dev_err(dev, "Failed to create dai link: %d", ret); 160 return ret; 161 } 162 163 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL); 164 if (!card) 165 return -ENOMEM; 166 167 card->name = "avs_max98373"; 168 card->dev = dev; 169 card->owner = THIS_MODULE; 170 card->dai_link = dai_link; 171 card->num_links = 1; 172 card->codec_conf = card_codec_conf; 173 card->num_configs = ARRAY_SIZE(card_codec_conf); 174 card->controls = card_controls; 175 card->num_controls = ARRAY_SIZE(card_controls); 176 card->dapm_widgets = card_widgets; 177 card->num_dapm_widgets = ARRAY_SIZE(card_widgets); 178 card->dapm_routes = card_base_routes; 179 card->num_dapm_routes = ARRAY_SIZE(card_base_routes); 180 card->fully_routed = true; 181 182 ret = snd_soc_fixup_dai_links_platform_name(card, pname); 183 if (ret) 184 return ret; 185 186 return devm_snd_soc_register_card(dev, card); 187} 188 189static struct platform_driver avs_max98373_driver = { 190 .probe = avs_max98373_probe, 191 .driver = { 192 .name = "avs_max98373", 193 .pm = &snd_soc_pm_ops, 194 }, 195}; 196 197module_platform_driver(avs_max98373_driver) 198 199MODULE_LICENSE("GPL"); 200MODULE_ALIAS("platform:avs_max98373"); 201