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 int type = HDA_DEV_LEGACY; 121 #endif 122 struct hda_bus *hbus = sof_to_hbus(sdev); 123 struct hdac_device *hdev; 124 u32 hda_cmd = (address << 28) | (AC_NODE_ROOT << 20) | 125 (AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID; 126 u32 resp = -1; 127 int ret; 128 129 mutex_lock(&hbus->core.cmd_mutex); 130 snd_hdac_bus_send_cmd(&hbus->core, hda_cmd); 131 snd_hdac_bus_get_response(&hbus->core, address, &resp); 132 mutex_unlock(&hbus->core.cmd_mutex); 133 if (resp == -1) 134 return -EIO; 135 dev_dbg(sdev->dev, "HDA codec #%d probed OK: response: %x\n", 136 address, resp); 137 138 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC) 139 hda_priv = devm_kzalloc(sdev->dev, sizeof(*hda_priv), GFP_KERNEL); 140 if (!hda_priv) 141 return -ENOMEM; 142 143 hda_priv->codec.bus = hbus; 144 hdev = &hda_priv->codec.core; 145 codec = &hda_priv->codec; 146 147 /* only probe ASoC codec drivers for HDAC-HDMI */ 148 if (!hda_codec_use_common_hdmi && (resp & 0xFFFF0000) == IDISP_VID_INTEL) 149 type = HDA_DEV_ASOC; 150 151 ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev, type); 152 if (ret < 0) 153 return ret; 154 155 if ((resp & 0xFFFF0000) == IDISP_VID_INTEL) { 156 if (!hdev->bus->audio_component) { 157 dev_dbg(sdev->dev, 158 "iDisp hw present but no driver\n"); 159 goto error; 160 } 161 hda_priv->need_display_power = true; 162 } 163 164 if (is_generic_config(hbus)) 165 codec->probe_id = HDA_CODEC_ID_GENERIC; 166 else 167 codec->probe_id = 0; 168 169 if (type == HDA_DEV_LEGACY) { 170 ret = hda_codec_load_module(codec); 171 /* 172 * handle ret==0 (no driver bound) as an error, but pass 173 * other return codes without modification 174 */ 175 if (ret == 0) 176 goto error; 177 } 178 179 return ret; 180 181 error: 182 snd_hdac_ext_bus_device_exit(hdev); 183 return -ENOENT; 184 185 #else 186 hdev = devm_kzalloc(sdev->dev, sizeof(*hdev), GFP_KERNEL); 187 if (!hdev) 188 return -ENOMEM; 189 190 ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev, HDA_DEV_ASOC); 191 192 return ret; 193 #endif 194 } 195 196 /* Codec initialization */ 197 void hda_codec_probe_bus(struct snd_sof_dev *sdev, 198 bool hda_codec_use_common_hdmi) 199 { 200 struct hdac_bus *bus = sof_to_bus(sdev); 201 int i, ret; 202 203 /* probe codecs in avail slots */ 204 for (i = 0; i < HDA_MAX_CODECS; i++) { 205 206 if (!(bus->codec_mask & (1 << i))) 207 continue; 208 209 ret = hda_codec_probe(sdev, i, hda_codec_use_common_hdmi); 210 if (ret < 0) { 211 dev_warn(bus->dev, "codec #%d probe error, ret: %d\n", 212 i, ret); 213 bus->codec_mask &= ~BIT(i); 214 } 215 } 216 } 217 EXPORT_SYMBOL_NS(hda_codec_probe_bus, SND_SOC_SOF_HDA_AUDIO_CODEC); 218 219 #if IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI) || \ 220 IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI) 221 222 void hda_codec_i915_display_power(struct snd_sof_dev *sdev, bool enable) 223 { 224 struct hdac_bus *bus = sof_to_bus(sdev); 225 226 if (HDA_IDISP_CODEC(bus->codec_mask)) { 227 dev_dbg(bus->dev, "Turning i915 HDAC power %d\n", enable); 228 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, enable); 229 } 230 } 231 EXPORT_SYMBOL_NS(hda_codec_i915_display_power, SND_SOC_SOF_HDA_AUDIO_CODEC_I915); 232 233 int hda_codec_i915_init(struct snd_sof_dev *sdev) 234 { 235 struct hdac_bus *bus = sof_to_bus(sdev); 236 int ret; 237 238 /* i915 exposes a HDA codec for HDMI audio */ 239 ret = snd_hdac_i915_init(bus); 240 if (ret < 0) 241 return ret; 242 243 /* codec_mask not yet known, power up for probe */ 244 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true); 245 246 return 0; 247 } 248 EXPORT_SYMBOL_NS(hda_codec_i915_init, SND_SOC_SOF_HDA_AUDIO_CODEC_I915); 249 250 int hda_codec_i915_exit(struct snd_sof_dev *sdev) 251 { 252 struct hdac_bus *bus = sof_to_bus(sdev); 253 254 if (!bus->audio_component) 255 return 0; 256 257 /* power down unconditionally */ 258 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false); 259 260 return snd_hdac_i915_exit(bus); 261 } 262 EXPORT_SYMBOL_NS(hda_codec_i915_exit, SND_SOC_SOF_HDA_AUDIO_CODEC_I915); 263 264 #endif 265 266 MODULE_LICENSE("Dual BSD/GPL"); 267