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 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC) 24 #define IDISP_VID_INTEL 0x80860000 25 26 /* load the legacy HDA codec driver */ 27 static int request_codec_module(struct hda_codec *codec) 28 { 29 #ifdef MODULE 30 char alias[MODULE_NAME_LEN]; 31 const char *mod = NULL; 32 33 switch (codec->probe_id) { 34 case HDA_CODEC_ID_GENERIC: 35 #if IS_MODULE(CONFIG_SND_HDA_GENERIC) 36 mod = "snd-hda-codec-generic"; 37 #endif 38 break; 39 default: 40 snd_hdac_codec_modalias(&codec->core, alias, sizeof(alias)); 41 mod = alias; 42 break; 43 } 44 45 if (mod) { 46 dev_dbg(&codec->core.dev, "loading codec module: %s\n", mod); 47 request_module(mod); 48 } 49 #endif /* MODULE */ 50 return device_attach(hda_codec_dev(codec)); 51 } 52 53 static int hda_codec_load_module(struct hda_codec *codec) 54 { 55 int ret = request_codec_module(codec); 56 57 if (ret <= 0) { 58 codec->probe_id = HDA_CODEC_ID_GENERIC; 59 ret = request_codec_module(codec); 60 } 61 62 return ret; 63 } 64 65 /* enable controller wake up event for all codecs with jack connectors */ 66 void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev) 67 { 68 struct hda_bus *hbus = sof_to_hbus(sdev); 69 struct hdac_bus *bus = sof_to_bus(sdev); 70 struct hda_codec *codec; 71 unsigned int mask = 0; 72 73 list_for_each_codec(codec, hbus) 74 if (codec->jacktbl.used) 75 mask |= BIT(codec->core.addr); 76 77 snd_hdac_chip_updatew(bus, WAKEEN, STATESTS_INT_MASK, mask); 78 } 79 80 /* check jack status after resuming from suspend mode */ 81 void hda_codec_jack_check(struct snd_sof_dev *sdev) 82 { 83 struct hda_bus *hbus = sof_to_hbus(sdev); 84 struct hdac_bus *bus = sof_to_bus(sdev); 85 struct hda_codec *codec; 86 87 /* disable controller Wake Up event*/ 88 snd_hdac_chip_updatew(bus, WAKEEN, STATESTS_INT_MASK, 0); 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 schedule_delayed_work(&codec->jackpoll_work, 97 codec->jackpoll_interval); 98 } 99 #else 100 void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev) {} 101 void hda_codec_jack_check(struct snd_sof_dev *sdev) {} 102 #endif /* CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC */ 103 EXPORT_SYMBOL_NS(hda_codec_jack_wake_enable, SND_SOC_SOF_HDA_AUDIO_CODEC); 104 EXPORT_SYMBOL_NS(hda_codec_jack_check, SND_SOC_SOF_HDA_AUDIO_CODEC); 105 106 #if IS_ENABLED(CONFIG_SND_HDA_GENERIC) 107 #define is_generic_config(bus) \ 108 ((bus)->modelname && !strcmp((bus)->modelname, "generic")) 109 #else 110 #define is_generic_config(x) 0 111 #endif 112 113 /* probe individual codec */ 114 static int hda_codec_probe(struct snd_sof_dev *sdev, int address, 115 bool hda_codec_use_common_hdmi) 116 { 117 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC) 118 struct hdac_hda_priv *hda_priv; 119 struct hda_codec *codec; 120 #endif 121 struct hda_bus *hbus = sof_to_hbus(sdev); 122 struct hdac_device *hdev; 123 u32 hda_cmd = (address << 28) | (AC_NODE_ROOT << 20) | 124 (AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID; 125 u32 resp = -1; 126 int ret; 127 128 mutex_lock(&hbus->core.cmd_mutex); 129 snd_hdac_bus_send_cmd(&hbus->core, hda_cmd); 130 snd_hdac_bus_get_response(&hbus->core, address, &resp); 131 mutex_unlock(&hbus->core.cmd_mutex); 132 if (resp == -1) 133 return -EIO; 134 dev_dbg(sdev->dev, "HDA codec #%d probed OK: response: %x\n", 135 address, resp); 136 137 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC) 138 hda_priv = devm_kzalloc(sdev->dev, sizeof(*hda_priv), GFP_KERNEL); 139 if (!hda_priv) 140 return -ENOMEM; 141 142 hda_priv->codec.bus = hbus; 143 hdev = &hda_priv->codec.core; 144 codec = &hda_priv->codec; 145 146 ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev); 147 if (ret < 0) 148 return ret; 149 150 if ((resp & 0xFFFF0000) == IDISP_VID_INTEL) { 151 if (!hdev->bus->audio_component) { 152 dev_dbg(sdev->dev, 153 "iDisp hw present but no driver\n"); 154 return -ENOENT; 155 } 156 hda_priv->need_display_power = true; 157 } 158 159 if (is_generic_config(hbus)) 160 codec->probe_id = HDA_CODEC_ID_GENERIC; 161 else 162 codec->probe_id = 0; 163 164 /* 165 * if common HDMI codec driver is not used, codec load 166 * is skipped here and hdac_hdmi is used instead 167 */ 168 if (hda_codec_use_common_hdmi || 169 (resp & 0xFFFF0000) != IDISP_VID_INTEL) { 170 hdev->type = HDA_DEV_LEGACY; 171 ret = hda_codec_load_module(codec); 172 /* 173 * handle ret==0 (no driver bound) as an error, but pass 174 * other return codes without modification 175 */ 176 if (ret == 0) 177 ret = -ENOENT; 178 } 179 180 return ret; 181 182 error: 183 snd_hdac_ext_bus_device_exit(hdev); 184 return -ENOENT; 185 186 #else 187 hdev = devm_kzalloc(sdev->dev, sizeof(*hdev), GFP_KERNEL); 188 if (!hdev) 189 return -ENOMEM; 190 191 ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev); 192 193 return ret; 194 #endif 195 } 196 197 /* Codec initialization */ 198 void hda_codec_probe_bus(struct snd_sof_dev *sdev, 199 bool hda_codec_use_common_hdmi) 200 { 201 struct hdac_bus *bus = sof_to_bus(sdev); 202 int i, ret; 203 204 /* probe codecs in avail slots */ 205 for (i = 0; i < HDA_MAX_CODECS; i++) { 206 207 if (!(bus->codec_mask & (1 << i))) 208 continue; 209 210 ret = hda_codec_probe(sdev, i, hda_codec_use_common_hdmi); 211 if (ret < 0) { 212 dev_warn(bus->dev, "codec #%d probe error, ret: %d\n", 213 i, ret); 214 bus->codec_mask &= ~BIT(i); 215 } 216 } 217 } 218 EXPORT_SYMBOL_NS(hda_codec_probe_bus, SND_SOC_SOF_HDA_AUDIO_CODEC); 219 220 #if IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI) || \ 221 IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI) 222 223 void hda_codec_i915_display_power(struct snd_sof_dev *sdev, bool enable) 224 { 225 struct hdac_bus *bus = sof_to_bus(sdev); 226 227 if (HDA_IDISP_CODEC(bus->codec_mask)) { 228 dev_dbg(bus->dev, "Turning i915 HDAC power %d\n", enable); 229 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, enable); 230 } 231 } 232 EXPORT_SYMBOL_NS(hda_codec_i915_display_power, SND_SOC_SOF_HDA_AUDIO_CODEC_I915); 233 234 int hda_codec_i915_init(struct snd_sof_dev *sdev) 235 { 236 struct hdac_bus *bus = sof_to_bus(sdev); 237 int ret; 238 239 /* i915 exposes a HDA codec for HDMI audio */ 240 ret = snd_hdac_i915_init(bus); 241 if (ret < 0) 242 return ret; 243 244 /* codec_mask not yet known, power up for probe */ 245 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true); 246 247 return 0; 248 } 249 EXPORT_SYMBOL_NS(hda_codec_i915_init, SND_SOC_SOF_HDA_AUDIO_CODEC_I915); 250 251 int hda_codec_i915_exit(struct snd_sof_dev *sdev) 252 { 253 struct hdac_bus *bus = sof_to_bus(sdev); 254 255 if (!bus->audio_component) 256 return 0; 257 258 /* power down unconditionally */ 259 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false); 260 261 return snd_hdac_i915_exit(bus); 262 } 263 EXPORT_SYMBOL_NS(hda_codec_i915_exit, SND_SOC_SOF_HDA_AUDIO_CODEC_I915); 264 265 #endif 266 267 MODULE_LICENSE("Dual BSD/GPL"); 268