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, bool enable) 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 if (enable) { 74 list_for_each_codec(codec, hbus) 75 if (codec->jacktbl.used) 76 mask |= BIT(codec->core.addr); 77 } 78 79 snd_hdac_chip_updatew(bus, WAKEEN, STATESTS_INT_MASK, mask); 80 } 81 82 /* check jack status after resuming from suspend mode */ 83 void hda_codec_jack_check(struct snd_sof_dev *sdev) 84 { 85 struct hda_bus *hbus = sof_to_hbus(sdev); 86 struct hda_codec *codec; 87 88 list_for_each_codec(codec, hbus) 89 /* 90 * Wake up all jack-detecting codecs regardless whether an event 91 * has been recorded in STATESTS 92 */ 93 if (codec->jacktbl.used) 94 pm_request_resume(&codec->core.dev); 95 } 96 #else 97 void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev, bool enable) {} 98 void hda_codec_jack_check(struct snd_sof_dev *sdev) {} 99 #endif /* CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC */ 100 EXPORT_SYMBOL_NS(hda_codec_jack_wake_enable, SND_SOC_SOF_HDA_AUDIO_CODEC); 101 EXPORT_SYMBOL_NS(hda_codec_jack_check, SND_SOC_SOF_HDA_AUDIO_CODEC); 102 103 #if IS_ENABLED(CONFIG_SND_HDA_GENERIC) 104 #define is_generic_config(bus) \ 105 ((bus)->modelname && !strcmp((bus)->modelname, "generic")) 106 #else 107 #define is_generic_config(x) 0 108 #endif 109 110 /* probe individual codec */ 111 static int hda_codec_probe(struct snd_sof_dev *sdev, int address, 112 bool hda_codec_use_common_hdmi) 113 { 114 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC) 115 struct hdac_hda_priv *hda_priv; 116 struct hda_codec *codec; 117 int type = HDA_DEV_LEGACY; 118 #endif 119 struct hda_bus *hbus = sof_to_hbus(sdev); 120 struct hdac_device *hdev; 121 u32 hda_cmd = (address << 28) | (AC_NODE_ROOT << 20) | 122 (AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID; 123 u32 resp = -1; 124 int ret; 125 126 mutex_lock(&hbus->core.cmd_mutex); 127 snd_hdac_bus_send_cmd(&hbus->core, hda_cmd); 128 snd_hdac_bus_get_response(&hbus->core, address, &resp); 129 mutex_unlock(&hbus->core.cmd_mutex); 130 if (resp == -1) 131 return -EIO; 132 dev_dbg(sdev->dev, "HDA codec #%d probed OK: response: %x\n", 133 address, resp); 134 135 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC) 136 hda_priv = devm_kzalloc(sdev->dev, sizeof(*hda_priv), GFP_KERNEL); 137 if (!hda_priv) 138 return -ENOMEM; 139 140 hda_priv->codec.bus = hbus; 141 hdev = &hda_priv->codec.core; 142 codec = &hda_priv->codec; 143 144 /* only probe ASoC codec drivers for HDAC-HDMI */ 145 if (!hda_codec_use_common_hdmi && (resp & 0xFFFF0000) == IDISP_VID_INTEL) 146 type = HDA_DEV_ASOC; 147 148 ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev, type); 149 if (ret < 0) 150 return ret; 151 152 if ((resp & 0xFFFF0000) == IDISP_VID_INTEL) { 153 if (!hdev->bus->audio_component) { 154 dev_dbg(sdev->dev, 155 "iDisp hw present but no driver\n"); 156 ret = -ENOENT; 157 goto out; 158 } 159 hda_priv->need_display_power = true; 160 } 161 162 if (is_generic_config(hbus)) 163 codec->probe_id = HDA_CODEC_ID_GENERIC; 164 else 165 codec->probe_id = 0; 166 167 if (type == HDA_DEV_LEGACY) { 168 ret = hda_codec_load_module(codec); 169 /* 170 * handle ret==0 (no driver bound) as an error, but pass 171 * other return codes without modification 172 */ 173 if (ret == 0) 174 ret = -ENOENT; 175 } 176 177 out: 178 if (ret < 0) { 179 snd_hdac_device_unregister(hdev); 180 put_device(&hdev->dev); 181 } 182 #else 183 hdev = devm_kzalloc(sdev->dev, sizeof(*hdev), GFP_KERNEL); 184 if (!hdev) 185 return -ENOMEM; 186 187 ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev, HDA_DEV_ASOC); 188 #endif 189 190 return ret; 191 } 192 193 /* Codec initialization */ 194 void hda_codec_probe_bus(struct snd_sof_dev *sdev, 195 bool hda_codec_use_common_hdmi) 196 { 197 struct hdac_bus *bus = sof_to_bus(sdev); 198 int i, ret; 199 200 /* probe codecs in avail slots */ 201 for (i = 0; i < HDA_MAX_CODECS; i++) { 202 203 if (!(bus->codec_mask & (1 << i))) 204 continue; 205 206 ret = hda_codec_probe(sdev, i, hda_codec_use_common_hdmi); 207 if (ret < 0) { 208 dev_warn(bus->dev, "codec #%d probe error, ret: %d\n", 209 i, ret); 210 bus->codec_mask &= ~BIT(i); 211 } 212 } 213 } 214 EXPORT_SYMBOL_NS(hda_codec_probe_bus, SND_SOC_SOF_HDA_AUDIO_CODEC); 215 216 #if IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI) || \ 217 IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI) 218 219 void hda_codec_i915_display_power(struct snd_sof_dev *sdev, bool enable) 220 { 221 struct hdac_bus *bus = sof_to_bus(sdev); 222 223 if (HDA_IDISP_CODEC(bus->codec_mask)) { 224 dev_dbg(bus->dev, "Turning i915 HDAC power %d\n", enable); 225 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, enable); 226 } 227 } 228 EXPORT_SYMBOL_NS(hda_codec_i915_display_power, SND_SOC_SOF_HDA_AUDIO_CODEC_I915); 229 230 int hda_codec_i915_init(struct snd_sof_dev *sdev) 231 { 232 struct hdac_bus *bus = sof_to_bus(sdev); 233 int ret; 234 235 /* i915 exposes a HDA codec for HDMI audio */ 236 ret = snd_hdac_i915_init(bus); 237 if (ret < 0) 238 return ret; 239 240 /* codec_mask not yet known, power up for probe */ 241 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true); 242 243 return 0; 244 } 245 EXPORT_SYMBOL_NS(hda_codec_i915_init, SND_SOC_SOF_HDA_AUDIO_CODEC_I915); 246 247 int hda_codec_i915_exit(struct snd_sof_dev *sdev) 248 { 249 struct hdac_bus *bus = sof_to_bus(sdev); 250 251 if (!bus->audio_component) 252 return 0; 253 254 /* power down unconditionally */ 255 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false); 256 257 return snd_hdac_i915_exit(bus); 258 } 259 EXPORT_SYMBOL_NS(hda_codec_i915_exit, SND_SOC_SOF_HDA_AUDIO_CODEC_I915); 260 261 #endif 262 263 MODULE_LICENSE("Dual BSD/GPL"); 264