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 20 static 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 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_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 covert 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_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 93 static const struct snd_soc_ops avs_max98373_ops = { 94 .hw_params = avs_max98373_hw_params, 95 }; 96 97 static 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 } 143 144 static int avs_create_dapm_routes(struct device *dev, int ssp_port, 145 struct snd_soc_dapm_route **routes, int *num_routes) 146 { 147 struct snd_soc_dapm_route *dr; 148 const int num_base = ARRAY_SIZE(card_base_routes); 149 const int num_dr = num_base + 2; 150 int idx; 151 152 dr = devm_kcalloc(dev, num_dr, sizeof(*dr), GFP_KERNEL); 153 if (!dr) 154 return -ENOMEM; 155 156 memcpy(dr, card_base_routes, num_base * sizeof(*dr)); 157 158 idx = num_base; 159 dr[idx].sink = devm_kasprintf(dev, GFP_KERNEL, "Left HiFi Playback"); 160 dr[idx].source = devm_kasprintf(dev, GFP_KERNEL, "ssp%d Tx", ssp_port); 161 if (!dr[idx].sink || !dr[idx].source) 162 return -ENOMEM; 163 164 idx++; 165 dr[idx].sink = devm_kasprintf(dev, GFP_KERNEL, "Right HiFi Playback"); 166 dr[idx].source = devm_kasprintf(dev, GFP_KERNEL, "ssp%d Tx", ssp_port); 167 if (!dr[idx].sink || !dr[idx].source) 168 return -ENOMEM; 169 170 *routes = dr; 171 *num_routes = num_dr; 172 173 return 0; 174 } 175 176 static int avs_max98373_probe(struct platform_device *pdev) 177 { 178 struct snd_soc_dapm_route *routes; 179 struct snd_soc_dai_link *dai_link; 180 struct snd_soc_acpi_mach *mach; 181 struct snd_soc_card *card; 182 struct device *dev = &pdev->dev; 183 const char *pname; 184 int num_routes, ssp_port, ret; 185 186 mach = dev_get_platdata(dev); 187 pname = mach->mach_params.platform; 188 ssp_port = __ffs(mach->mach_params.i2s_link_mask); 189 190 ret = avs_create_dai_link(dev, pname, ssp_port, &dai_link); 191 if (ret) { 192 dev_err(dev, "Failed to create dai link: %d", ret); 193 return ret; 194 } 195 196 ret = avs_create_dapm_routes(dev, ssp_port, &routes, &num_routes); 197 if (ret) { 198 dev_err(dev, "Failed to create dapm routes: %d", ret); 199 return ret; 200 } 201 202 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL); 203 if (!card) 204 return -ENOMEM; 205 206 card->name = "avs_max98373"; 207 card->dev = dev; 208 card->owner = THIS_MODULE; 209 card->dai_link = dai_link; 210 card->num_links = 1; 211 card->codec_conf = card_codec_conf; 212 card->num_configs = ARRAY_SIZE(card_codec_conf); 213 card->controls = card_controls; 214 card->num_controls = ARRAY_SIZE(card_controls); 215 card->dapm_widgets = card_widgets; 216 card->num_dapm_widgets = ARRAY_SIZE(card_widgets); 217 card->dapm_routes = routes; 218 card->num_dapm_routes = num_routes; 219 card->fully_routed = true; 220 221 ret = snd_soc_fixup_dai_links_platform_name(card, pname); 222 if (ret) 223 return ret; 224 225 return devm_snd_soc_register_card(dev, card); 226 } 227 228 static struct platform_driver avs_max98373_driver = { 229 .probe = avs_max98373_probe, 230 .driver = { 231 .name = "avs_max98373", 232 .pm = &snd_soc_pm_ops, 233 }, 234 }; 235 236 module_platform_driver(avs_max98373_driver) 237 238 MODULE_LICENSE("GPL"); 239 MODULE_ALIAS("platform:avs_max98373"); 240