1 // SPDX-License-Identifier: GPL-2.0-only 2 // 3 // Copyright(c) 2021-2022 Intel Corporation 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 static const struct snd_kcontrol_new card_controls[] = { 18 SOC_DAPM_PIN_SWITCH("Spk"), 19 }; 20 21 static const struct snd_soc_dapm_widget card_widgets[] = { 22 SND_SOC_DAPM_SPK("Spk", NULL), 23 }; 24 25 static const struct snd_soc_dapm_route card_base_routes[] = { 26 { "Spk", NULL, "Speaker" }, 27 }; 28 29 static int 30 avs_max98357a_be_fixup(struct snd_soc_pcm_runtime *runrime, struct snd_pcm_hw_params *params) 31 { 32 struct snd_interval *rate, *channels; 33 struct snd_mask *fmt; 34 35 rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); 36 channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); 37 fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); 38 39 /* The ADSP will convert the FE rate to 48k, stereo */ 40 rate->min = rate->max = 48000; 41 channels->min = channels->max = 2; 42 43 /* set SSP0 to 16 bit */ 44 snd_mask_none(fmt); 45 snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S16_LE); 46 return 0; 47 } 48 49 static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port, 50 int tdm_slot, struct snd_soc_dai_link **dai_link) 51 { 52 struct snd_soc_dai_link_component *platform; 53 struct snd_soc_dai_link *dl; 54 55 dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL); 56 platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL); 57 if (!dl || !platform) 58 return -ENOMEM; 59 60 platform->name = platform_name; 61 62 dl->name = devm_kasprintf(dev, GFP_KERNEL, 63 AVS_STRING_FMT("SSP", "-Codec", ssp_port, tdm_slot)); 64 dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL); 65 dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs), GFP_KERNEL); 66 if (!dl->name || !dl->cpus || !dl->codecs) 67 return -ENOMEM; 68 69 dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, 70 AVS_STRING_FMT("SSP", " Pin", ssp_port, tdm_slot)); 71 dl->codecs->name = devm_kasprintf(dev, GFP_KERNEL, "MX98357A:00"); 72 dl->codecs->dai_name = devm_kasprintf(dev, GFP_KERNEL, "HiFi"); 73 if (!dl->cpus->dai_name || !dl->codecs->name || !dl->codecs->dai_name) 74 return -ENOMEM; 75 76 dl->num_cpus = 1; 77 dl->num_codecs = 1; 78 dl->platforms = platform; 79 dl->num_platforms = 1; 80 dl->id = 0; 81 dl->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS; 82 dl->be_hw_params_fixup = avs_max98357a_be_fixup; 83 dl->nonatomic = 1; 84 dl->no_pcm = 1; 85 dl->dpcm_playback = 1; 86 87 *dai_link = dl; 88 89 return 0; 90 } 91 92 static int avs_max98357a_probe(struct platform_device *pdev) 93 { 94 struct snd_soc_dai_link *dai_link; 95 struct snd_soc_acpi_mach *mach; 96 struct snd_soc_card *card; 97 struct device *dev = &pdev->dev; 98 const char *pname; 99 int ssp_port, tdm_slot, ret; 100 101 mach = dev_get_platdata(dev); 102 pname = mach->mach_params.platform; 103 104 ret = avs_mach_get_ssp_tdm(dev, mach, &ssp_port, &tdm_slot); 105 if (ret) 106 return ret; 107 108 ret = avs_create_dai_link(dev, pname, ssp_port, tdm_slot, &dai_link); 109 if (ret) { 110 dev_err(dev, "Failed to create dai link: %d", ret); 111 return ret; 112 } 113 114 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL); 115 if (!card) 116 return -ENOMEM; 117 118 card->name = "avs_max98357a"; 119 card->dev = dev; 120 card->owner = THIS_MODULE; 121 card->dai_link = dai_link; 122 card->num_links = 1; 123 card->controls = card_controls; 124 card->num_controls = ARRAY_SIZE(card_controls); 125 card->dapm_widgets = card_widgets; 126 card->num_dapm_widgets = ARRAY_SIZE(card_widgets); 127 card->dapm_routes = card_base_routes; 128 card->num_dapm_routes = ARRAY_SIZE(card_base_routes); 129 card->fully_routed = true; 130 131 ret = snd_soc_fixup_dai_links_platform_name(card, pname); 132 if (ret) 133 return ret; 134 135 return devm_snd_soc_register_card(dev, card); 136 } 137 138 static const struct platform_device_id avs_max98357a_driver_ids[] = { 139 { 140 .name = "avs_max98357a", 141 }, 142 {}, 143 }; 144 MODULE_DEVICE_TABLE(platform, avs_max98357a_driver_ids); 145 146 static struct platform_driver avs_max98357a_driver = { 147 .probe = avs_max98357a_probe, 148 .driver = { 149 .name = "avs_max98357a", 150 .pm = &snd_soc_pm_ops, 151 }, 152 .id_table = avs_max98357a_driver_ids, 153 }; 154 155 module_platform_driver(avs_max98357a_driver) 156 157 MODULE_DESCRIPTION("Intel max98357a machine driver"); 158 MODULE_LICENSE("GPL"); 159