1 // SPDX-License-Identifier: GPL-2.0-only 2 // 3 // Copyright(c) 2021-2022 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/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 17 static int avs_create_dai_links(struct device *dev, struct hda_codec *codec, int pcm_count, 18 const char *platform_name, struct snd_soc_dai_link **links) 19 { 20 struct snd_soc_dai_link_component *platform; 21 struct snd_soc_dai_link *dl; 22 struct hda_pcm *pcm; 23 const char *cname = dev_name(&codec->core.dev); 24 int i; 25 26 dl = devm_kcalloc(dev, pcm_count, sizeof(*dl), GFP_KERNEL); 27 platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL); 28 if (!dl || !platform) 29 return -ENOMEM; 30 31 platform->name = platform_name; 32 pcm = list_first_entry(&codec->pcm_list_head, struct hda_pcm, list); 33 34 for (i = 0; i < pcm_count; i++, pcm = list_next_entry(pcm, list)) { 35 dl[i].name = devm_kasprintf(dev, GFP_KERNEL, "%s link%d", cname, i); 36 if (!dl[i].name) 37 return -ENOMEM; 38 39 dl[i].id = i; 40 dl[i].nonatomic = 1; 41 dl[i].no_pcm = 1; 42 dl[i].dpcm_playback = 1; 43 dl[i].dpcm_capture = 1; 44 dl[i].platforms = platform; 45 dl[i].num_platforms = 1; 46 dl[i].ignore_pmdown_time = 1; 47 48 dl[i].codecs = devm_kzalloc(dev, sizeof(*dl->codecs), GFP_KERNEL); 49 dl[i].cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL); 50 if (!dl[i].codecs || !dl[i].cpus) 51 return -ENOMEM; 52 53 dl[i].cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "%s-cpu%d", cname, i); 54 if (!dl[i].cpus->dai_name) 55 return -ENOMEM; 56 57 dl[i].codecs->name = devm_kstrdup(dev, cname, GFP_KERNEL); 58 dl[i].codecs->dai_name = pcm->name; 59 dl[i].num_codecs = 1; 60 dl[i].num_cpus = 1; 61 } 62 63 *links = dl; 64 return 0; 65 } 66 67 static int avs_create_dapm_routes(struct device *dev, struct hda_codec *codec, int pcm_count, 68 struct snd_soc_dapm_route **routes, int *num_routes) 69 { 70 struct snd_soc_dapm_route *dr; 71 struct hda_pcm *pcm; 72 const char *cname = dev_name(&codec->core.dev); 73 int i, n = 0; 74 75 /* at max twice the number of pcms */ 76 dr = devm_kcalloc(dev, pcm_count * 2, sizeof(*dr), GFP_KERNEL); 77 if (!dr) 78 return -ENOMEM; 79 80 pcm = list_first_entry(&codec->pcm_list_head, struct hda_pcm, list); 81 82 for (i = 0; i < pcm_count; i++, pcm = list_next_entry(pcm, list)) { 83 struct hda_pcm_stream *stream; 84 int dir; 85 86 dir = SNDRV_PCM_STREAM_PLAYBACK; 87 stream = &pcm->stream[dir]; 88 if (!stream->substreams) 89 goto capture_routes; 90 91 dr[n].sink = devm_kasprintf(dev, GFP_KERNEL, "%s %s", pcm->name, 92 snd_pcm_direction_name(dir)); 93 dr[n].source = devm_kasprintf(dev, GFP_KERNEL, "%s-cpu%d Tx", cname, i); 94 if (!dr[n].sink || !dr[n].source) 95 return -ENOMEM; 96 n++; 97 98 capture_routes: 99 dir = SNDRV_PCM_STREAM_CAPTURE; 100 stream = &pcm->stream[dir]; 101 if (!stream->substreams) 102 continue; 103 104 dr[n].sink = devm_kasprintf(dev, GFP_KERNEL, "%s-cpu%d Rx", cname, i); 105 dr[n].source = devm_kasprintf(dev, GFP_KERNEL, "%s %s", pcm->name, 106 snd_pcm_direction_name(dir)); 107 if (!dr[n].sink || !dr[n].source) 108 return -ENOMEM; 109 n++; 110 } 111 112 *routes = dr; 113 *num_routes = n; 114 return 0; 115 } 116 117 /* Should be aligned with SectionPCM's name from topology */ 118 #define FEDAI_NAME_PREFIX "HDMI" 119 120 static struct snd_pcm * 121 avs_card_hdmi_pcm_at(struct snd_soc_card *card, int hdmi_idx) 122 { 123 struct snd_soc_pcm_runtime *rtd; 124 int dir = SNDRV_PCM_STREAM_PLAYBACK; 125 126 for_each_card_rtds(card, rtd) { 127 struct snd_pcm *spcm; 128 int ret, n; 129 130 spcm = rtd->pcm ? rtd->pcm->streams[dir].pcm : NULL; 131 if (!spcm || !strstr(spcm->id, FEDAI_NAME_PREFIX)) 132 continue; 133 134 ret = sscanf(spcm->id, FEDAI_NAME_PREFIX "%d", &n); 135 if (ret != 1) 136 continue; 137 if (n == hdmi_idx) 138 return rtd->pcm; 139 } 140 141 return NULL; 142 } 143 144 static int avs_card_late_probe(struct snd_soc_card *card) 145 { 146 struct snd_soc_acpi_mach *mach = dev_get_platdata(card->dev); 147 struct hda_codec *codec = mach->pdata; 148 struct hda_pcm *hpcm; 149 /* Topology pcm indexing is 1-based */ 150 int i = 1; 151 152 list_for_each_entry(hpcm, &codec->pcm_list_head, list) { 153 struct snd_pcm *spcm; 154 155 spcm = avs_card_hdmi_pcm_at(card, i); 156 if (spcm) { 157 hpcm->pcm = spcm; 158 hpcm->device = spcm->device; 159 dev_info(card->dev, "%s: mapping HDMI converter %d to PCM %d (%p)\n", 160 __func__, i, hpcm->device, spcm); 161 } else { 162 hpcm->pcm = NULL; 163 hpcm->device = SNDRV_PCM_INVALID_DEVICE; 164 dev_warn(card->dev, "%s: no PCM in topology for HDMI converter %d\n", 165 __func__, i); 166 } 167 i++; 168 } 169 170 return hda_codec_probe_complete(codec); 171 } 172 173 static int avs_probing_link_init(struct snd_soc_pcm_runtime *rtm) 174 { 175 struct snd_soc_dapm_route *routes; 176 struct snd_soc_acpi_mach *mach; 177 struct snd_soc_dai_link *links = NULL; 178 struct snd_soc_card *card = rtm->card; 179 struct hda_codec *codec; 180 struct hda_pcm *pcm; 181 int ret, n, pcm_count = 0; 182 183 mach = dev_get_platdata(card->dev); 184 codec = mach->pdata; 185 186 if (list_empty(&codec->pcm_list_head)) 187 return -EINVAL; 188 list_for_each_entry(pcm, &codec->pcm_list_head, list) 189 pcm_count++; 190 191 ret = avs_create_dai_links(card->dev, codec, pcm_count, mach->mach_params.platform, &links); 192 if (ret < 0) { 193 dev_err(card->dev, "create links failed: %d\n", ret); 194 return ret; 195 } 196 197 ret = snd_soc_add_pcm_runtimes(card, links, pcm_count); 198 if (ret < 0) { 199 dev_err(card->dev, "add links failed: %d\n", ret); 200 return ret; 201 } 202 203 ret = avs_create_dapm_routes(card->dev, codec, pcm_count, &routes, &n); 204 if (ret < 0) { 205 dev_err(card->dev, "create routes failed: %d\n", ret); 206 return ret; 207 } 208 209 ret = snd_soc_dapm_add_routes(&card->dapm, routes, n); 210 if (ret < 0) { 211 dev_err(card->dev, "add routes failed: %d\n", ret); 212 return ret; 213 } 214 215 return 0; 216 } 217 218 SND_SOC_DAILINK_DEF(dummy, DAILINK_COMP_ARRAY(COMP_DUMMY())); 219 220 static struct snd_soc_dai_link probing_link = { 221 .name = "probing-LINK", 222 .id = -1, 223 .nonatomic = 1, 224 .no_pcm = 1, 225 .dpcm_playback = 1, 226 .dpcm_capture = 1, 227 .cpus = dummy, 228 .num_cpus = ARRAY_SIZE(dummy), 229 .init = avs_probing_link_init, 230 }; 231 232 static int avs_hdaudio_probe(struct platform_device *pdev) 233 { 234 struct snd_soc_dai_link *binder; 235 struct snd_soc_acpi_mach *mach; 236 struct snd_soc_card *card; 237 struct device *dev = &pdev->dev; 238 struct hda_codec *codec; 239 240 mach = dev_get_platdata(dev); 241 codec = mach->pdata; 242 243 /* codec may be unloaded before card's probe() fires */ 244 if (!device_is_registered(&codec->core.dev)) 245 return -ENODEV; 246 247 binder = devm_kmemdup(dev, &probing_link, sizeof(probing_link), GFP_KERNEL); 248 if (!binder) 249 return -ENOMEM; 250 251 binder->platforms = devm_kzalloc(dev, sizeof(*binder->platforms), GFP_KERNEL); 252 binder->codecs = devm_kzalloc(dev, sizeof(*binder->codecs), GFP_KERNEL); 253 if (!binder->platforms || !binder->codecs) 254 return -ENOMEM; 255 256 binder->codecs->name = devm_kstrdup(dev, dev_name(&codec->core.dev), GFP_KERNEL); 257 if (!binder->codecs->name) 258 return -ENOMEM; 259 260 binder->platforms->name = mach->mach_params.platform; 261 binder->num_platforms = 1; 262 binder->codecs->dai_name = "codec-probing-DAI"; 263 binder->num_codecs = 1; 264 265 card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL); 266 if (!card) 267 return -ENOMEM; 268 269 card->name = binder->codecs->name; 270 card->dev = dev; 271 card->owner = THIS_MODULE; 272 card->dai_link = binder; 273 card->num_links = 1; 274 card->fully_routed = true; 275 if (hda_codec_is_display(codec)) 276 card->late_probe = avs_card_late_probe; 277 278 return devm_snd_soc_register_card(dev, card); 279 } 280 281 static struct platform_driver avs_hdaudio_driver = { 282 .probe = avs_hdaudio_probe, 283 .driver = { 284 .name = "avs_hdaudio", 285 .pm = &snd_soc_pm_ops, 286 }, 287 }; 288 289 module_platform_driver(avs_hdaudio_driver) 290 291 MODULE_DESCRIPTION("Intel HD-Audio machine driver"); 292 MODULE_AUTHOR("Cezary Rojewski <cezary.rojewski@intel.com>"); 293 MODULE_LICENSE("GPL"); 294 MODULE_ALIAS("platform:avs_hdaudio"); 295