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/hda_codec.h> 12 #include <sound/hda_i915.h> 13 #include <sound/soc.h> 14 #include <sound/soc-acpi.h> 15 #include "../../../codecs/hda.h" 16 #include "../utils.h" 17 18 static int avs_create_dai_links(struct device *dev, struct hda_codec *codec, int pcm_count, 19 const char *platform_name, struct snd_soc_dai_link **links) 20 { 21 struct snd_soc_dai_link_component *platform; 22 struct snd_soc_dai_link *dl; 23 struct hda_pcm *pcm; 24 const char *cname = dev_name(&codec->core.dev); 25 int i; 26 27 dl = devm_kcalloc(dev, pcm_count, sizeof(*dl), GFP_KERNEL); 28 platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL); 29 if (!dl || !platform) 30 return -ENOMEM; 31 32 platform->name = platform_name; 33 pcm = list_first_entry(&codec->pcm_list_head, struct hda_pcm, list); 34 35 for (i = 0; i < pcm_count; i++, pcm = list_next_entry(pcm, list)) { 36 dl[i].name = devm_kasprintf(dev, GFP_KERNEL, "%s link%d", cname, i); 37 if (!dl[i].name) 38 return -ENOMEM; 39 40 dl[i].id = i; 41 dl[i].nonatomic = 1; 42 dl[i].no_pcm = 1; 43 dl[i].platforms = platform; 44 dl[i].num_platforms = 1; 45 dl[i].ignore_pmdown_time = 1; 46 47 dl[i].codecs = devm_kzalloc(dev, sizeof(*dl->codecs), GFP_KERNEL); 48 dl[i].cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL); 49 if (!dl[i].codecs || !dl[i].cpus) 50 return -ENOMEM; 51 52 dl[i].cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "%s-cpu%d", cname, i); 53 if (!dl[i].cpus->dai_name) 54 return -ENOMEM; 55 56 dl[i].codecs->name = devm_kstrdup_const(dev, cname, GFP_KERNEL); 57 if (!dl[i].codecs->name) 58 return -ENOMEM; 59 60 dl[i].codecs->dai_name = pcm->name; 61 dl[i].num_codecs = 1; 62 dl[i].num_cpus = 1; 63 } 64 65 *links = dl; 66 return 0; 67 } 68 69 /* Should be aligned with SectionPCM's name from topology */ 70 #define FEDAI_NAME_PREFIX "HDMI" 71 72 static struct snd_pcm * 73 avs_card_hdmi_pcm_at(struct snd_soc_card *card, int hdmi_idx) 74 { 75 struct snd_soc_pcm_runtime *rtd; 76 int dir = SNDRV_PCM_STREAM_PLAYBACK; 77 78 for_each_card_rtds(card, rtd) { 79 struct snd_pcm *spcm; 80 int ret, n; 81 82 spcm = rtd->pcm ? rtd->pcm->streams[dir].pcm : NULL; 83 if (!spcm || !strstr(spcm->id, FEDAI_NAME_PREFIX)) 84 continue; 85 86 ret = sscanf(spcm->id, FEDAI_NAME_PREFIX "%d", &n); 87 if (ret != 1) 88 continue; 89 if (n == hdmi_idx) 90 return rtd->pcm; 91 } 92 93 return NULL; 94 } 95 96 static int avs_card_late_probe(struct snd_soc_card *card) 97 { 98 struct snd_soc_acpi_mach *mach = dev_get_platdata(card->dev); 99 struct avs_mach_pdata *pdata = mach->pdata; 100 struct hda_codec *codec = pdata->codec; 101 struct hda_pcm *hpcm; 102 /* Topology pcm indexing is 1-based */ 103 int i = 1; 104 105 list_for_each_entry(hpcm, &codec->pcm_list_head, list) { 106 struct snd_pcm *spcm; 107 108 spcm = avs_card_hdmi_pcm_at(card, i); 109 if (spcm) { 110 hpcm->pcm = spcm; 111 hpcm->device = spcm->device; 112 dev_info(card->dev, "%s: mapping HDMI converter %d to PCM %d (%p)\n", 113 __func__, i, hpcm->device, spcm); 114 } else { 115 hpcm->pcm = NULL; 116 hpcm->device = SNDRV_PCM_INVALID_DEVICE; 117 dev_warn(card->dev, "%s: no PCM in topology for HDMI converter %d\n", 118 __func__, i); 119 } 120 i++; 121 } 122 123 return hda_codec_probe_complete(codec); 124 } 125 126 static int avs_probing_link_init(struct snd_soc_pcm_runtime *rtm) 127 { 128 struct snd_soc_acpi_mach *mach; 129 struct avs_mach_pdata *pdata; 130 struct snd_soc_dai_link *links = NULL; 131 struct snd_soc_card *card = rtm->card; 132 struct hda_codec *codec; 133 struct hda_pcm *pcm; 134 int ret, pcm_count = 0; 135 136 mach = dev_get_platdata(card->dev); 137 pdata = mach->pdata; 138 codec = pdata->codec; 139 140 if (list_empty(&codec->pcm_list_head)) 141 return -EINVAL; 142 list_for_each_entry(pcm, &codec->pcm_list_head, list) 143 pcm_count++; 144 145 ret = avs_create_dai_links(card->dev, codec, pcm_count, mach->mach_params.platform, &links); 146 if (ret < 0) { 147 dev_err(card->dev, "create links failed: %d\n", ret); 148 return ret; 149 } 150 151 ret = snd_soc_add_pcm_runtimes(card, links, pcm_count); 152 if (ret < 0) { 153 dev_err(card->dev, "add links failed: %d\n", ret); 154 return ret; 155 } 156 157 return 0; 158 } 159 160 static const struct snd_soc_dai_link probing_link = { 161 .name = "probing-LINK", 162 .id = -1, 163 .nonatomic = 1, 164 .no_pcm = 1, 165 .cpus = &snd_soc_dummy_dlc, 166 .num_cpus = 1, 167 .init = avs_probing_link_init, 168 }; 169 170 static int avs_hdaudio_probe(struct platform_device *pdev) 171 { 172 struct snd_soc_dai_link *binder; 173 struct snd_soc_acpi_mach *mach; 174 struct avs_mach_pdata *pdata; 175 struct snd_soc_card *card; 176 struct device *dev = &pdev->dev; 177 struct hda_codec *codec; 178 179 mach = dev_get_platdata(dev); 180 pdata = mach->pdata; 181 codec = pdata->codec; 182 183 /* codec may be unloaded before card's probe() fires */ 184 if (!device_is_registered(&codec->core.dev)) 185 return -ENODEV; 186 187 binder = devm_kmemdup(dev, &probing_link, sizeof(probing_link), GFP_KERNEL); 188 if (!binder) 189 return -ENOMEM; 190 191 binder->platforms = devm_kzalloc(dev, sizeof(*binder->platforms), GFP_KERNEL); 192 binder->codecs = devm_kzalloc(dev, sizeof(*binder->codecs), GFP_KERNEL); 193 if (!binder->platforms || !binder->codecs) 194 return -ENOMEM; 195 196 binder->codecs->name = devm_kstrdup_const(dev, dev_name(&codec->core.dev), GFP_KERNEL); 197 if (!binder->codecs->name) 198 return -ENOMEM; 199 200 binder->platforms->name = mach->mach_params.platform; 201 binder->num_platforms = 1; 202 binder->codecs->dai_name = "codec-probing-DAI"; 203 binder->num_codecs = 1; 204 205 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL); 206 if (!card) 207 return -ENOMEM; 208 209 if (pdata->obsolete_card_names) { 210 card->name = binder->codecs->name; 211 } else { 212 card->driver_name = "avs_hdaudio"; 213 if (hda_codec_is_display(codec)) 214 card->long_name = card->name = "AVS HDMI"; 215 else 216 card->long_name = card->name = "AVS HD-Audio"; 217 } 218 219 card->dev = dev; 220 card->owner = THIS_MODULE; 221 card->dai_link = binder; 222 card->num_links = 1; 223 card->fully_routed = true; 224 if (hda_codec_is_display(codec)) 225 card->late_probe = avs_card_late_probe; 226 227 return devm_snd_soc_register_deferrable_card(dev, card); 228 } 229 230 static const struct platform_device_id avs_hdaudio_driver_ids[] = { 231 { 232 .name = "avs_hdaudio", 233 }, 234 {}, 235 }; 236 MODULE_DEVICE_TABLE(platform, avs_hdaudio_driver_ids); 237 238 static struct platform_driver avs_hdaudio_driver = { 239 .probe = avs_hdaudio_probe, 240 .driver = { 241 .name = "avs_hdaudio", 242 .pm = &snd_soc_pm_ops, 243 }, 244 .id_table = avs_hdaudio_driver_ids, 245 }; 246 247 module_platform_driver(avs_hdaudio_driver) 248 249 MODULE_DESCRIPTION("Intel HD-Audio machine driver"); 250 MODULE_AUTHOR("Cezary Rojewski <cezary.rojewski@intel.com>"); 251 MODULE_LICENSE("GPL"); 252