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 #define CODEC_PROBE_RETRIES 3 26 27 /* load the legacy HDA codec driver */ 28 static int request_codec_module(struct hda_codec *codec) 29 { 30 #ifdef MODULE 31 char alias[MODULE_NAME_LEN]; 32 const char *mod = NULL; 33 34 switch (codec->probe_id) { 35 case HDA_CODEC_ID_GENERIC: 36 #if IS_MODULE(CONFIG_SND_HDA_GENERIC) 37 mod = "snd-hda-codec-generic"; 38 #endif 39 break; 40 default: 41 snd_hdac_codec_modalias(&codec->core, alias, sizeof(alias)); 42 mod = alias; 43 break; 44 } 45 46 if (mod) { 47 dev_dbg(&codec->core.dev, "loading codec module: %s\n", mod); 48 request_module(mod); 49 } 50 #endif /* MODULE */ 51 return device_attach(hda_codec_dev(codec)); 52 } 53 54 static int hda_codec_load_module(struct hda_codec *codec) 55 { 56 int ret = request_codec_module(codec); 57 58 if (ret <= 0) { 59 codec->probe_id = HDA_CODEC_ID_GENERIC; 60 ret = request_codec_module(codec); 61 } 62 63 return ret; 64 } 65 66 /* enable controller wake up event for all codecs with jack connectors */ 67 void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev, bool enable) 68 { 69 struct hda_bus *hbus = sof_to_hbus(sdev); 70 struct hdac_bus *bus = sof_to_bus(sdev); 71 struct hda_codec *codec; 72 unsigned int mask = 0; 73 74 if (enable) { 75 list_for_each_codec(codec, hbus) 76 if (codec->jacktbl.used) 77 mask |= BIT(codec->core.addr); 78 } 79 80 snd_hdac_chip_updatew(bus, WAKEEN, STATESTS_INT_MASK, mask); 81 } 82 83 /* check jack status after resuming from suspend mode */ 84 void hda_codec_jack_check(struct snd_sof_dev *sdev) 85 { 86 struct hda_bus *hbus = sof_to_hbus(sdev); 87 struct hda_codec *codec; 88 89 list_for_each_codec(codec, hbus) 90 /* 91 * Wake up all jack-detecting codecs regardless whether an event 92 * has been recorded in STATESTS 93 */ 94 if (codec->jacktbl.used) 95 pm_request_resume(&codec->core.dev); 96 } 97 #else 98 void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev, bool enable) {} 99 void hda_codec_jack_check(struct snd_sof_dev *sdev) {} 100 #endif /* CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC */ 101 EXPORT_SYMBOL_NS(hda_codec_jack_wake_enable, SND_SOC_SOF_HDA_AUDIO_CODEC); 102 EXPORT_SYMBOL_NS(hda_codec_jack_check, SND_SOC_SOF_HDA_AUDIO_CODEC); 103 104 #if IS_ENABLED(CONFIG_SND_HDA_GENERIC) 105 #define is_generic_config(bus) \ 106 ((bus)->modelname && !strcmp((bus)->modelname, "generic")) 107 #else 108 #define is_generic_config(x) 0 109 #endif 110 111 /* probe individual codec */ 112 static int hda_codec_probe(struct snd_sof_dev *sdev, int address, 113 bool hda_codec_use_common_hdmi) 114 { 115 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC) 116 struct hdac_hda_priv *hda_priv; 117 struct hda_codec *codec; 118 int type = HDA_DEV_LEGACY; 119 #endif 120 struct hda_bus *hbus = sof_to_hbus(sdev); 121 struct hdac_device *hdev; 122 u32 hda_cmd = (address << 28) | (AC_NODE_ROOT << 20) | 123 (AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID; 124 u32 resp = -1; 125 int ret, retry = 0; 126 127 do { 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 } while (resp == -1 && retry++ < CODEC_PROBE_RETRIES); 133 134 if (resp == -1) 135 return -EIO; 136 dev_dbg(sdev->dev, "HDA codec #%d probed OK: response: %x\n", 137 address, resp); 138 139 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC) 140 hda_priv = devm_kzalloc(sdev->dev, sizeof(*hda_priv), GFP_KERNEL); 141 if (!hda_priv) 142 return -ENOMEM; 143 144 hda_priv->codec.bus = hbus; 145 hdev = &hda_priv->codec.core; 146 codec = &hda_priv->codec; 147 148 /* only probe ASoC codec drivers for HDAC-HDMI */ 149 if (!hda_codec_use_common_hdmi && (resp & 0xFFFF0000) == IDISP_VID_INTEL) 150 type = HDA_DEV_ASOC; 151 152 ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev, type); 153 if (ret < 0) 154 return ret; 155 156 if ((resp & 0xFFFF0000) == IDISP_VID_INTEL) { 157 if (!hdev->bus->audio_component) { 158 dev_dbg(sdev->dev, 159 "iDisp hw present but no driver\n"); 160 ret = -ENOENT; 161 goto out; 162 } 163 hda_priv->need_display_power = true; 164 } 165 166 if (is_generic_config(hbus)) 167 codec->probe_id = HDA_CODEC_ID_GENERIC; 168 else 169 codec->probe_id = 0; 170 171 if (type == HDA_DEV_LEGACY) { 172 ret = hda_codec_load_module(codec); 173 /* 174 * handle ret==0 (no driver bound) as an error, but pass 175 * other return codes without modification 176 */ 177 if (ret == 0) 178 ret = -ENOENT; 179 } 180 181 out: 182 if (ret < 0) { 183 snd_hdac_device_unregister(hdev); 184 put_device(&hdev->dev); 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, HDA_DEV_ASOC); 192 #endif 193 194 return ret; 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