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 MAX98927_DEV0_NAME "i2c-MX98927:00" 18 #define MAX98927_DEV1_NAME "i2c-MX98927:01" 19 #define MAX98927_CODEC_NAME "max98927-aif1" 20 21 static struct snd_soc_codec_conf card_codec_conf[] = { 22 { 23 .dlc = COMP_CODEC_CONF(MAX98927_DEV0_NAME), 24 .name_prefix = "Right", 25 }, 26 { 27 .dlc = COMP_CODEC_CONF(MAX98927_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_max98927_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_max98927_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 = 0; 73 int i; 74 75 for_each_rtd_codec_dais(runtime, i, codec_dai) { 76 if (!strcmp(codec_dai->component->name, MAX98927_DEV0_NAME)) 77 ret = snd_soc_dai_set_tdm_slot(codec_dai, 0x30, 3, 8, 16); 78 else if (!strcmp(codec_dai->component->name, MAX98927_DEV1_NAME)) 79 ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xC0, 3, 8, 16); 80 81 if (ret < 0) { 82 dev_err(runtime->dev, "hw_params for %s failed: %d\n", 83 codec_dai->component->name, ret); 84 return ret; 85 } 86 } 87 88 return 0; 89 } 90 91 static const struct snd_soc_ops avs_max98927_ops = { 92 .hw_params = avs_max98927_hw_params, 93 }; 94 95 static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port, 96 int tdm_slot, struct snd_soc_dai_link **dai_link) 97 { 98 struct snd_soc_dai_link_component *platform; 99 struct snd_soc_dai_link *dl; 100 101 dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL); 102 platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL); 103 if (!dl || !platform) 104 return -ENOMEM; 105 106 platform->name = platform_name; 107 108 dl->name = devm_kasprintf(dev, GFP_KERNEL, 109 AVS_STRING_FMT("SSP", "-Codec", ssp_port, tdm_slot)); 110 dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL); 111 dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs) * 2, GFP_KERNEL); 112 if (!dl->name || !dl->cpus || !dl->codecs) 113 return -ENOMEM; 114 115 dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, 116 AVS_STRING_FMT("SSP", " Pin", ssp_port, tdm_slot)); 117 dl->codecs[0].name = devm_kasprintf(dev, GFP_KERNEL, MAX98927_DEV0_NAME); 118 dl->codecs[0].dai_name = devm_kasprintf(dev, GFP_KERNEL, MAX98927_CODEC_NAME); 119 dl->codecs[1].name = devm_kasprintf(dev, GFP_KERNEL, MAX98927_DEV1_NAME); 120 dl->codecs[1].dai_name = devm_kasprintf(dev, GFP_KERNEL, MAX98927_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_CBS_CFS; 131 dl->be_hw_params_fixup = avs_max98927_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_max98927_ops; 138 139 *dai_link = dl; 140 141 return 0; 142 } 143 144 static int avs_max98927_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, tdm_slot, ret; 152 153 mach = dev_get_platdata(dev); 154 pname = mach->mach_params.platform; 155 156 ret = avs_mach_get_ssp_tdm(dev, mach, &ssp_port, &tdm_slot); 157 if (ret) 158 return ret; 159 160 ret = avs_create_dai_link(dev, pname, ssp_port, tdm_slot, &dai_link); 161 if (ret) { 162 dev_err(dev, "Failed to create dai link: %d", ret); 163 return ret; 164 } 165 166 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL); 167 if (!card) 168 return -ENOMEM; 169 170 card->name = "avs_max98927"; 171 card->dev = dev; 172 card->owner = THIS_MODULE; 173 card->dai_link = dai_link; 174 card->num_links = 1; 175 card->codec_conf = card_codec_conf; 176 card->num_configs = ARRAY_SIZE(card_codec_conf); 177 card->controls = card_controls; 178 card->num_controls = ARRAY_SIZE(card_controls); 179 card->dapm_widgets = card_widgets; 180 card->num_dapm_widgets = ARRAY_SIZE(card_widgets); 181 card->dapm_routes = card_base_routes; 182 card->num_dapm_routes = ARRAY_SIZE(card_base_routes); 183 card->fully_routed = true; 184 185 ret = snd_soc_fixup_dai_links_platform_name(card, pname); 186 if (ret) 187 return ret; 188 189 return devm_snd_soc_register_card(dev, card); 190 } 191 192 static const struct platform_device_id avs_max98927_driver_ids[] = { 193 { 194 .name = "avs_max98927", 195 }, 196 {}, 197 }; 198 MODULE_DEVICE_TABLE(platform, avs_max98927_driver_ids); 199 200 static struct platform_driver avs_max98927_driver = { 201 .probe = avs_max98927_probe, 202 .driver = { 203 .name = "avs_max98927", 204 .pm = &snd_soc_pm_ops, 205 }, 206 .id_table = avs_max98927_driver_ids, 207 }; 208 209 module_platform_driver(avs_max98927_driver) 210 211 MODULE_LICENSE("GPL"); 212