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/platform_device.h> 10 #include <sound/hda_codec.h> 11 #include <sound/hda_i915.h> 12 #include <sound/soc.h> 13 #include <sound/soc-acpi.h> 14 #include "../../../codecs/hda.h" 15 16 static int avs_create_dai_links(struct device *dev, struct hda_codec *codec, int pcm_count, 17 const char *platform_name, struct snd_soc_dai_link **links) 18 { 19 struct snd_soc_dai_link_component *platform; 20 struct snd_soc_dai_link *dl; 21 struct hda_pcm *pcm; 22 const char *cname = dev_name(&codec->core.dev); 23 int i; 24 25 dl = devm_kcalloc(dev, pcm_count, sizeof(*dl), GFP_KERNEL); 26 platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL); 27 if (!dl || !platform) 28 return -ENOMEM; 29 30 platform->name = platform_name; 31 pcm = list_first_entry(&codec->pcm_list_head, struct hda_pcm, list); 32 33 for (i = 0; i < pcm_count; i++, pcm = list_next_entry(pcm, list)) { 34 dl[i].name = devm_kasprintf(dev, GFP_KERNEL, "%s link%d", cname, i); 35 if (!dl[i].name) 36 return -ENOMEM; 37 38 dl[i].id = i; 39 dl[i].nonatomic = 1; 40 dl[i].no_pcm = 1; 41 dl[i].dpcm_playback = 1; 42 dl[i].dpcm_capture = 1; 43 dl[i].platforms = platform; 44 dl[i].num_platforms = 1; 45 46 dl[i].codecs = devm_kzalloc(dev, sizeof(*dl->codecs), GFP_KERNEL); 47 dl[i].cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL); 48 if (!dl[i].codecs || !dl[i].cpus) 49 return -ENOMEM; 50 51 dl[i].cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "%s-cpu%d", cname, i); 52 if (!dl[i].cpus->dai_name) 53 return -ENOMEM; 54 55 dl[i].codecs->name = devm_kstrdup(dev, cname, GFP_KERNEL); 56 dl[i].codecs->dai_name = pcm->name; 57 dl[i].num_codecs = 1; 58 dl[i].num_cpus = 1; 59 } 60 61 *links = dl; 62 return 0; 63 } 64 65 static int avs_create_dapm_routes(struct device *dev, struct hda_codec *codec, int pcm_count, 66 struct snd_soc_dapm_route **routes, int *num_routes) 67 { 68 struct snd_soc_dapm_route *dr; 69 struct hda_pcm *pcm; 70 const char *cname = dev_name(&codec->core.dev); 71 int i, n = 0; 72 73 /* at max twice the number of pcms */ 74 dr = devm_kcalloc(dev, pcm_count * 2, sizeof(*dr), GFP_KERNEL); 75 if (!dr) 76 return -ENOMEM; 77 78 pcm = list_first_entry(&codec->pcm_list_head, struct hda_pcm, list); 79 80 for (i = 0; i < pcm_count; i++, pcm = list_next_entry(pcm, list)) { 81 struct hda_pcm_stream *stream; 82 int dir; 83 84 dir = SNDRV_PCM_STREAM_PLAYBACK; 85 stream = &pcm->stream[dir]; 86 if (!stream->substreams) 87 goto capture_routes; 88 89 dr[n].sink = devm_kasprintf(dev, GFP_KERNEL, "%s %s", pcm->name, 90 snd_pcm_direction_name(dir)); 91 dr[n].source = devm_kasprintf(dev, GFP_KERNEL, "%s-cpu%d Tx", cname, i); 92 if (!dr[n].sink || !dr[n].source) 93 return -ENOMEM; 94 n++; 95 96 capture_routes: 97 dir = SNDRV_PCM_STREAM_CAPTURE; 98 stream = &pcm->stream[dir]; 99 if (!stream->substreams) 100 continue; 101 102 dr[n].sink = devm_kasprintf(dev, GFP_KERNEL, "%s-cpu%d Rx", cname, i); 103 dr[n].source = devm_kasprintf(dev, GFP_KERNEL, "%s %s", pcm->name, 104 snd_pcm_direction_name(dir)); 105 if (!dr[n].sink || !dr[n].source) 106 return -ENOMEM; 107 n++; 108 } 109 110 *routes = dr; 111 *num_routes = n; 112 return 0; 113 } 114 115 /* Should be aligned with SectionPCM's name from topology */ 116 #define FEDAI_NAME_PREFIX "HDMI" 117 118 static struct snd_pcm * 119 avs_card_hdmi_pcm_at(struct snd_soc_card *card, int hdmi_idx) 120 { 121 struct snd_soc_pcm_runtime *rtd; 122 int dir = SNDRV_PCM_STREAM_PLAYBACK; 123 124 for_each_card_rtds(card, rtd) { 125 struct snd_pcm *spcm; 126 int ret, n; 127 128 spcm = rtd->pcm ? rtd->pcm->streams[dir].pcm : NULL; 129 if (!spcm || !strstr(spcm->id, FEDAI_NAME_PREFIX)) 130 continue; 131 132 ret = sscanf(spcm->id, FEDAI_NAME_PREFIX "%d", &n); 133 if (ret != 1) 134 continue; 135 if (n == hdmi_idx) 136 return rtd->pcm; 137 } 138 139 return NULL; 140 } 141 142 static int avs_card_late_probe(struct snd_soc_card *card) 143 { 144 struct snd_soc_acpi_mach *mach = dev_get_platdata(card->dev); 145 struct hda_codec *codec = mach->pdata; 146 struct hda_pcm *hpcm; 147 /* Topology pcm indexing is 1-based */ 148 int i = 1; 149 150 list_for_each_entry(hpcm, &codec->pcm_list_head, list) { 151 struct snd_pcm *spcm; 152 153 spcm = avs_card_hdmi_pcm_at(card, i); 154 if (spcm) { 155 hpcm->pcm = spcm; 156 hpcm->device = spcm->device; 157 dev_info(card->dev, "%s: mapping HDMI converter %d to PCM %d (%p)\n", 158 __func__, i, hpcm->device, spcm); 159 } else { 160 hpcm->pcm = NULL; 161 hpcm->device = SNDRV_PCM_INVALID_DEVICE; 162 dev_warn(card->dev, "%s: no PCM in topology for HDMI converter %d\n", 163 __func__, i); 164 } 165 i++; 166 } 167 168 return hda_codec_probe_complete(codec); 169 } 170 171 static int avs_probing_link_init(struct snd_soc_pcm_runtime *rtm) 172 { 173 struct snd_soc_dapm_route *routes; 174 struct snd_soc_acpi_mach *mach; 175 struct snd_soc_dai_link *links = NULL; 176 struct snd_soc_card *card = rtm->card; 177 struct hda_codec *codec; 178 struct hda_pcm *pcm; 179 int ret, n, pcm_count = 0; 180 181 mach = dev_get_platdata(card->dev); 182 codec = mach->pdata; 183 184 if (list_empty(&codec->pcm_list_head)) 185 return -EINVAL; 186 list_for_each_entry(pcm, &codec->pcm_list_head, list) 187 pcm_count++; 188 189 ret = avs_create_dai_links(card->dev, codec, pcm_count, mach->mach_params.platform, &links); 190 if (ret < 0) { 191 dev_err(card->dev, "create links failed: %d\n", ret); 192 return ret; 193 } 194 195 for (n = 0; n < pcm_count; n++) { 196 ret = snd_soc_add_pcm_runtime(card, &links[n]); 197 if (ret < 0) { 198 dev_err(card->dev, "add links failed: %d\n", ret); 199 return ret; 200 } 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