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 MAX98927_DEV0_NAME "i2c-MX98927:00" 17 #define MAX98927_DEV1_NAME "i2c-MX98927:01" 18 #define MAX98927_CODEC_NAME "max98927-aif1" 19 20 static struct snd_soc_codec_conf card_codec_conf[] = { 21 { 22 .dlc = COMP_CODEC_CONF(MAX98927_DEV0_NAME), 23 .name_prefix = "Right", 24 }, 25 { 26 .dlc = COMP_CODEC_CONF(MAX98927_DEV1_NAME), 27 .name_prefix = "Left", 28 }, 29 }; 30 31 static const struct snd_kcontrol_new card_controls[] = { 32 SOC_DAPM_PIN_SWITCH("Left Spk"), 33 SOC_DAPM_PIN_SWITCH("Right Spk"), 34 }; 35 36 static 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 41 static 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 46 static int 47 avs_max98927_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 66 static int avs_max98927_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 = 0; 72 int i; 73 74 for_each_rtd_codec_dais(runtime, i, codec_dai) { 75 if (!strcmp(codec_dai->component->name, MAX98927_DEV0_NAME)) 76 ret = snd_soc_dai_set_tdm_slot(codec_dai, 0x30, 3, 8, 16); 77 else if (!strcmp(codec_dai->component->name, MAX98927_DEV1_NAME)) 78 ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xC0, 3, 8, 16); 79 80 if (ret < 0) { 81 dev_err(runtime->dev, "hw_params for %s failed: %d\n", 82 codec_dai->component->name, ret); 83 return ret; 84 } 85 } 86 87 return 0; 88 } 89 90 static const struct snd_soc_ops avs_max98927_ops = { 91 .hw_params = avs_max98927_hw_params, 92 }; 93 94 static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port, 95 struct snd_soc_dai_link **dai_link) 96 { 97 struct snd_soc_dai_link_component *platform; 98 struct snd_soc_dai_link *dl; 99 100 dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL); 101 platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL); 102 if (!dl || !platform) 103 return -ENOMEM; 104 105 platform->name = platform_name; 106 107 dl->name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d-Codec", ssp_port); 108 dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL); 109 dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs) * 2, GFP_KERNEL); 110 if (!dl->name || !dl->cpus || !dl->codecs) 111 return -ENOMEM; 112 113 dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d Pin", ssp_port); 114 dl->codecs[0].name = devm_kasprintf(dev, GFP_KERNEL, MAX98927_DEV0_NAME); 115 dl->codecs[0].dai_name = devm_kasprintf(dev, GFP_KERNEL, MAX98927_CODEC_NAME); 116 dl->codecs[1].name = devm_kasprintf(dev, GFP_KERNEL, MAX98927_DEV1_NAME); 117 dl->codecs[1].dai_name = devm_kasprintf(dev, GFP_KERNEL, MAX98927_CODEC_NAME); 118 if (!dl->cpus->dai_name || !dl->codecs[0].name || !dl->codecs[0].dai_name || 119 !dl->codecs[1].name || !dl->codecs[1].dai_name) 120 return -ENOMEM; 121 122 dl->num_cpus = 1; 123 dl->num_codecs = 2; 124 dl->platforms = platform; 125 dl->num_platforms = 1; 126 dl->id = 0; 127 dl->dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS; 128 dl->be_hw_params_fixup = avs_max98927_be_fixup; 129 dl->nonatomic = 1; 130 dl->no_pcm = 1; 131 dl->dpcm_capture = 1; 132 dl->dpcm_playback = 1; 133 dl->ignore_pmdown_time = 1; 134 dl->ops = &avs_max98927_ops; 135 136 *dai_link = dl; 137 138 return 0; 139 } 140 141 static int avs_max98927_probe(struct platform_device *pdev) 142 { 143 struct snd_soc_dai_link *dai_link; 144 struct snd_soc_acpi_mach *mach; 145 struct snd_soc_card *card; 146 struct device *dev = &pdev->dev; 147 const char *pname; 148 int ssp_port, ret; 149 150 mach = dev_get_platdata(dev); 151 pname = mach->mach_params.platform; 152 ssp_port = __ffs(mach->mach_params.i2s_link_mask); 153 154 ret = avs_create_dai_link(dev, pname, ssp_port, &dai_link); 155 if (ret) { 156 dev_err(dev, "Failed to create dai link: %d", ret); 157 return ret; 158 } 159 160 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL); 161 if (!card) 162 return -ENOMEM; 163 164 card->name = "avs_max98927"; 165 card->dev = dev; 166 card->owner = THIS_MODULE; 167 card->dai_link = dai_link; 168 card->num_links = 1; 169 card->codec_conf = card_codec_conf; 170 card->num_configs = ARRAY_SIZE(card_codec_conf); 171 card->controls = card_controls; 172 card->num_controls = ARRAY_SIZE(card_controls); 173 card->dapm_widgets = card_widgets; 174 card->num_dapm_widgets = ARRAY_SIZE(card_widgets); 175 card->dapm_routes = card_base_routes; 176 card->num_dapm_routes = ARRAY_SIZE(card_base_routes); 177 card->fully_routed = true; 178 179 ret = snd_soc_fixup_dai_links_platform_name(card, pname); 180 if (ret) 181 return ret; 182 183 return devm_snd_soc_register_card(dev, card); 184 } 185 186 static struct platform_driver avs_max98927_driver = { 187 .probe = avs_max98927_probe, 188 .driver = { 189 .name = "avs_max98927", 190 .pm = &snd_soc_pm_ops, 191 }, 192 }; 193 194 module_platform_driver(avs_max98927_driver) 195 196 MODULE_LICENSE("GPL"); 197 MODULE_ALIAS("platform:avs_max98927"); 198