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 #include "../utils.h" 16 17 #define MAX98373_DEV0_NAME "i2c-MX98373:00" 18 #define MAX98373_DEV1_NAME "i2c-MX98373:01" 19 #define MAX98373_CODEC_NAME "max98373-aif1" 20 21 static struct snd_soc_codec_conf card_codec_conf[] = { 22 { 23 .dlc = COMP_CODEC_CONF(MAX98373_DEV0_NAME), 24 .name_prefix = "Right", 25 }, 26 { 27 .dlc = COMP_CODEC_CONF(MAX98373_DEV1_NAME), 28 .name_prefix = "Left", 29 }, 30 }; 31 32 static const struct snd_kcontrol_new card_controls[] = { 33 SOC_DAPM_PIN_SWITCH("Left Spk"), 34 SOC_DAPM_PIN_SWITCH("Right Spk"), 35 }; 36 37 static const struct snd_soc_dapm_widget card_widgets[] = { 38 SND_SOC_DAPM_SPK("Left Spk", NULL), 39 SND_SOC_DAPM_SPK("Right Spk", NULL), 40 }; 41 42 static const struct snd_soc_dapm_route card_base_routes[] = { 43 { "Left Spk", NULL, "Left BE_OUT" }, 44 { "Right Spk", NULL, "Right BE_OUT" }, 45 }; 46 47 static int 48 avs_max98373_be_fixup(struct snd_soc_pcm_runtime *runrime, struct snd_pcm_hw_params *params) 49 { 50 struct snd_interval *rate, *channels; 51 struct snd_mask *fmt; 52 53 rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); 54 channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); 55 fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); 56 57 /* The ADSP will convert the FE rate to 48k, stereo */ 58 rate->min = rate->max = 48000; 59 channels->min = channels->max = 2; 60 61 /* set SSP0 to 16 bit */ 62 snd_mask_none(fmt); 63 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE); 64 return 0; 65 } 66 67 static int avs_max98373_hw_params(struct snd_pcm_substream *substream, 68 struct snd_pcm_hw_params *params) 69 { 70 struct snd_soc_pcm_runtime *runtime = snd_soc_substream_to_rtd(substream); 71 struct snd_soc_dai *codec_dai; 72 int ret, i; 73 74 for_each_rtd_codec_dais(runtime, i, codec_dai) { 75 if (!strcmp(codec_dai->component->name, MAX98373_DEV0_NAME)) { 76 ret = snd_soc_dai_set_tdm_slot(codec_dai, 0x30, 3, 8, 16); 77 if (ret < 0) { 78 dev_err(runtime->dev, "DEV0 TDM slot err:%d\n", ret); 79 return ret; 80 } 81 } 82 if (!strcmp(codec_dai->component->name, MAX98373_DEV1_NAME)) { 83 ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xC0, 3, 8, 16); 84 if (ret < 0) { 85 dev_err(runtime->dev, "DEV1 TDM slot err:%d\n", ret); 86 return ret; 87 } 88 } 89 } 90 91 return 0; 92 } 93 94 static const struct snd_soc_ops avs_max98373_ops = { 95 .hw_params = avs_max98373_hw_params, 96 }; 97 98 static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port, 99 int tdm_slot, struct snd_soc_dai_link **dai_link) 100 { 101 struct snd_soc_dai_link_component *platform; 102 struct snd_soc_dai_link *dl; 103 104 dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL); 105 platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL); 106 if (!dl || !platform) 107 return -ENOMEM; 108 109 platform->name = platform_name; 110 111 dl->name = devm_kasprintf(dev, GFP_KERNEL, 112 AVS_STRING_FMT("SSP", "-Codec", ssp_port, tdm_slot)); 113 dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL); 114 dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs) * 2, GFP_KERNEL); 115 if (!dl->name || !dl->cpus || !dl->codecs) 116 return -ENOMEM; 117 118 dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, 119 AVS_STRING_FMT("SSP", " Pin", ssp_port, tdm_slot)); 120 dl->codecs[0].name = devm_kasprintf(dev, GFP_KERNEL, MAX98373_DEV0_NAME); 121 dl->codecs[0].dai_name = devm_kasprintf(dev, GFP_KERNEL, MAX98373_CODEC_NAME); 122 dl->codecs[1].name = devm_kasprintf(dev, GFP_KERNEL, MAX98373_DEV1_NAME); 123 dl->codecs[1].dai_name = devm_kasprintf(dev, GFP_KERNEL, MAX98373_CODEC_NAME); 124 if (!dl->cpus->dai_name || !dl->codecs[0].name || !dl->codecs[0].dai_name || 125 !dl->codecs[1].name || !dl->codecs[1].dai_name) 126 return -ENOMEM; 127 128 dl->num_cpus = 1; 129 dl->num_codecs = 2; 130 dl->platforms = platform; 131 dl->num_platforms = 1; 132 dl->id = 0; 133 dl->dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBC_CFC; 134 dl->be_hw_params_fixup = avs_max98373_be_fixup; 135 dl->nonatomic = 1; 136 dl->no_pcm = 1; 137 dl->dpcm_capture = 1; 138 dl->dpcm_playback = 1; 139 dl->ignore_pmdown_time = 1; 140 dl->ops = &avs_max98373_ops; 141 142 *dai_link = dl; 143 144 return 0; 145 } 146 147 static int avs_max98373_probe(struct platform_device *pdev) 148 { 149 struct snd_soc_dai_link *dai_link; 150 struct snd_soc_acpi_mach *mach; 151 struct snd_soc_card *card; 152 struct device *dev = &pdev->dev; 153 const char *pname; 154 int ssp_port, tdm_slot, ret; 155 156 mach = dev_get_platdata(dev); 157 pname = mach->mach_params.platform; 158 159 ret = avs_mach_get_ssp_tdm(dev, mach, &ssp_port, &tdm_slot); 160 if (ret) 161 return ret; 162 163 ret = avs_create_dai_link(dev, pname, ssp_port, tdm_slot, &dai_link); 164 if (ret) { 165 dev_err(dev, "Failed to create dai link: %d", ret); 166 return ret; 167 } 168 169 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL); 170 if (!card) 171 return -ENOMEM; 172 173 card->name = "avs_max98373"; 174 card->dev = dev; 175 card->owner = THIS_MODULE; 176 card->dai_link = dai_link; 177 card->num_links = 1; 178 card->codec_conf = card_codec_conf; 179 card->num_configs = ARRAY_SIZE(card_codec_conf); 180 card->controls = card_controls; 181 card->num_controls = ARRAY_SIZE(card_controls); 182 card->dapm_widgets = card_widgets; 183 card->num_dapm_widgets = ARRAY_SIZE(card_widgets); 184 card->dapm_routes = card_base_routes; 185 card->num_dapm_routes = ARRAY_SIZE(card_base_routes); 186 card->fully_routed = true; 187 188 ret = snd_soc_fixup_dai_links_platform_name(card, pname); 189 if (ret) 190 return ret; 191 192 return devm_snd_soc_register_card(dev, card); 193 } 194 195 static const struct platform_device_id avs_max98373_driver_ids[] = { 196 { 197 .name = "avs_max98373", 198 }, 199 {}, 200 }; 201 MODULE_DEVICE_TABLE(platform, avs_max98373_driver_ids); 202 203 static struct platform_driver avs_max98373_driver = { 204 .probe = avs_max98373_probe, 205 .driver = { 206 .name = "avs_max98373", 207 .pm = &snd_soc_pm_ops, 208 }, 209 .id_table = avs_max98373_driver_ids, 210 }; 211 212 module_platform_driver(avs_max98373_driver) 213 214 MODULE_DESCRIPTION("Intel max98373 machine driver"); 215 MODULE_LICENSE("GPL"); 216