1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) 2 // 3 // This file is provided under a dual BSD/GPLv2 license. When using or 4 // redistributing this file, you may do so under either license. 5 // 6 // Copyright(c) 2018 Intel Corporation. All rights reserved. 7 // 8 // Authors: Keyon Jie <yang.jie@linux.intel.com> 9 // 10 11 #include <linux/module.h> 12 #include <sound/hdaudio_ext.h> 13 #include <sound/hda_register.h> 14 #include <sound/hda_codec.h> 15 #include <sound/hda_i915.h> 16 #include <sound/sof.h> 17 #include "../ops.h" 18 #include "hda.h" 19 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC) 20 #include "../../codecs/hdac_hda.h" 21 #endif /* CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC */ 22 23 #define CODEC_PROBE_RETRIES 3 24 25 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC) 26 #define IDISP_VID_INTEL 0x80860000 27 28 /* load the legacy HDA codec driver */ 29 static int request_codec_module(struct hda_codec *codec) 30 { 31 #ifdef MODULE 32 char alias[MODULE_NAME_LEN]; 33 const char *mod = NULL; 34 35 switch (codec->probe_id) { 36 case HDA_CODEC_ID_GENERIC: 37 #if IS_MODULE(CONFIG_SND_HDA_GENERIC) 38 mod = "snd-hda-codec-generic"; 39 #endif 40 break; 41 default: 42 snd_hdac_codec_modalias(&codec->core, alias, sizeof(alias)); 43 mod = alias; 44 break; 45 } 46 47 if (mod) { 48 dev_dbg(&codec->core.dev, "loading codec module: %s\n", mod); 49 request_module(mod); 50 } 51 #endif /* MODULE */ 52 return device_attach(hda_codec_dev(codec)); 53 } 54 55 static int hda_codec_load_module(struct hda_codec *codec) 56 { 57 int ret = request_codec_module(codec); 58 59 if (ret <= 0) { 60 codec->probe_id = HDA_CODEC_ID_GENERIC; 61 ret = request_codec_module(codec); 62 } 63 64 return ret; 65 } 66 67 /* enable controller wake up event for all codecs with jack connectors */ 68 void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev, bool enable) 69 { 70 struct hda_bus *hbus = sof_to_hbus(sdev); 71 struct hdac_bus *bus = sof_to_bus(sdev); 72 struct hda_codec *codec; 73 unsigned int mask = 0; 74 75 if (enable) { 76 list_for_each_codec(codec, hbus) 77 if (codec->jacktbl.used) 78 mask |= BIT(codec->core.addr); 79 } 80 81 snd_hdac_chip_updatew(bus, WAKEEN, STATESTS_INT_MASK, mask); 82 } 83 84 /* check jack status after resuming from suspend mode */ 85 void hda_codec_jack_check(struct snd_sof_dev *sdev) 86 { 87 struct hda_bus *hbus = sof_to_hbus(sdev); 88 struct hda_codec *codec; 89 90 list_for_each_codec(codec, hbus) 91 /* 92 * Wake up all jack-detecting codecs regardless whether an event 93 * has been recorded in STATESTS 94 */ 95 if (codec->jacktbl.used) 96 pm_request_resume(&codec->core.dev); 97 } 98 #else 99 void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev, bool enable) {} 100 void hda_codec_jack_check(struct snd_sof_dev *sdev) {} 101 #endif /* CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC */ 102 EXPORT_SYMBOL_NS(hda_codec_jack_wake_enable, SND_SOC_SOF_HDA_AUDIO_CODEC); 103 EXPORT_SYMBOL_NS(hda_codec_jack_check, SND_SOC_SOF_HDA_AUDIO_CODEC); 104 105 #if IS_ENABLED(CONFIG_SND_HDA_GENERIC) 106 #define is_generic_config(bus) \ 107 ((bus)->modelname && !strcmp((bus)->modelname, "generic")) 108 #else 109 #define is_generic_config(x) 0 110 #endif 111 112 static struct hda_codec *hda_codec_device_init(struct hdac_bus *bus, int addr, int type) 113 { 114 struct hda_codec *codec; 115 int ret; 116 117 codec = snd_hda_codec_device_init(to_hda_bus(bus), addr, "ehdaudio%dD%d", bus->idx, addr); 118 if (IS_ERR(codec)) { 119 dev_err(bus->dev, "device init failed for hdac device\n"); 120 return codec; 121 } 122 123 codec->core.type = type; 124 125 ret = snd_hdac_device_register(&codec->core); 126 if (ret) { 127 dev_err(bus->dev, "failed to register hdac device\n"); 128 put_device(&codec->core.dev); 129 return ERR_PTR(ret); 130 } 131 132 return codec; 133 } 134 135 /* probe individual codec */ 136 static int hda_codec_probe(struct snd_sof_dev *sdev, int address, 137 bool hda_codec_use_common_hdmi) 138 { 139 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC) 140 struct hdac_hda_priv *hda_priv; 141 int type = HDA_DEV_LEGACY; 142 #endif 143 struct hda_bus *hbus = sof_to_hbus(sdev); 144 struct hda_codec *codec; 145 u32 hda_cmd = (address << 28) | (AC_NODE_ROOT << 20) | 146 (AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID; 147 u32 resp = -1; 148 int ret, retry = 0; 149 150 do { 151 mutex_lock(&hbus->core.cmd_mutex); 152 snd_hdac_bus_send_cmd(&hbus->core, hda_cmd); 153 snd_hdac_bus_get_response(&hbus->core, address, &resp); 154 mutex_unlock(&hbus->core.cmd_mutex); 155 } while (resp == -1 && retry++ < CODEC_PROBE_RETRIES); 156 157 if (resp == -1) 158 return -EIO; 159 dev_dbg(sdev->dev, "HDA codec #%d probed OK: response: %x\n", 160 address, resp); 161 162 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC) 163 hda_priv = devm_kzalloc(sdev->dev, sizeof(*hda_priv), GFP_KERNEL); 164 if (!hda_priv) 165 return -ENOMEM; 166 167 /* only probe ASoC codec drivers for HDAC-HDMI */ 168 if (!hda_codec_use_common_hdmi && (resp & 0xFFFF0000) == IDISP_VID_INTEL) 169 type = HDA_DEV_ASOC; 170 171 codec = hda_codec_device_init(&hbus->core, address, type); 172 ret = PTR_ERR_OR_ZERO(codec); 173 if (ret < 0) 174 return ret; 175 176 hda_priv->codec = codec; 177 dev_set_drvdata(&codec->core.dev, hda_priv); 178 179 if ((resp & 0xFFFF0000) == IDISP_VID_INTEL) { 180 if (!hbus->core.audio_component) { 181 dev_dbg(sdev->dev, 182 "iDisp hw present but no driver\n"); 183 ret = -ENOENT; 184 goto out; 185 } 186 hda_priv->need_display_power = true; 187 } 188 189 if (is_generic_config(hbus)) 190 codec->probe_id = HDA_CODEC_ID_GENERIC; 191 else 192 codec->probe_id = 0; 193 194 if (type == HDA_DEV_LEGACY) { 195 ret = hda_codec_load_module(codec); 196 /* 197 * handle ret==0 (no driver bound) as an error, but pass 198 * other return codes without modification 199 */ 200 if (ret == 0) 201 ret = -ENOENT; 202 } 203 204 out: 205 if (ret < 0) { 206 snd_hdac_device_unregister(&codec->core); 207 put_device(&codec->core.dev); 208 } 209 #else 210 codec = hda_codec_device_init(&hbus->core, address, HDA_DEV_ASOC); 211 ret = PTR_ERR_OR_ZERO(codec); 212 #endif 213 214 return ret; 215 } 216 217 /* Codec initialization */ 218 void hda_codec_probe_bus(struct snd_sof_dev *sdev, 219 bool hda_codec_use_common_hdmi) 220 { 221 struct hdac_bus *bus = sof_to_bus(sdev); 222 int i, ret; 223 224 /* probe codecs in avail slots */ 225 for (i = 0; i < HDA_MAX_CODECS; i++) { 226 227 if (!(bus->codec_mask & (1 << i))) 228 continue; 229 230 ret = hda_codec_probe(sdev, i, hda_codec_use_common_hdmi); 231 if (ret < 0) { 232 dev_warn(bus->dev, "codec #%d probe error, ret: %d\n", 233 i, ret); 234 bus->codec_mask &= ~BIT(i); 235 } 236 } 237 } 238 EXPORT_SYMBOL_NS(hda_codec_probe_bus, SND_SOC_SOF_HDA_AUDIO_CODEC); 239 240 #if IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI) || \ 241 IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI) 242 243 void hda_codec_i915_display_power(struct snd_sof_dev *sdev, bool enable) 244 { 245 struct hdac_bus *bus = sof_to_bus(sdev); 246 247 if (HDA_IDISP_CODEC(bus->codec_mask)) { 248 dev_dbg(bus->dev, "Turning i915 HDAC power %d\n", enable); 249 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, enable); 250 } 251 } 252 EXPORT_SYMBOL_NS(hda_codec_i915_display_power, SND_SOC_SOF_HDA_AUDIO_CODEC_I915); 253 254 int hda_codec_i915_init(struct snd_sof_dev *sdev) 255 { 256 struct hdac_bus *bus = sof_to_bus(sdev); 257 int ret; 258 259 /* i915 exposes a HDA codec for HDMI audio */ 260 ret = snd_hdac_i915_init(bus); 261 if (ret < 0) 262 return ret; 263 264 /* codec_mask not yet known, power up for probe */ 265 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true); 266 267 return 0; 268 } 269 EXPORT_SYMBOL_NS(hda_codec_i915_init, SND_SOC_SOF_HDA_AUDIO_CODEC_I915); 270 271 int hda_codec_i915_exit(struct snd_sof_dev *sdev) 272 { 273 struct hdac_bus *bus = sof_to_bus(sdev); 274 275 if (!bus->audio_component) 276 return 0; 277 278 /* power down unconditionally */ 279 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false); 280 281 return snd_hdac_i915_exit(bus); 282 } 283 EXPORT_SYMBOL_NS(hda_codec_i915_exit, SND_SOC_SOF_HDA_AUDIO_CODEC_I915); 284 285 #endif 286 287 MODULE_LICENSE("Dual BSD/GPL"); 288