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 /* probe individual codec */ 113 static int hda_codec_probe(struct snd_sof_dev *sdev, int address, 114 bool hda_codec_use_common_hdmi) 115 { 116 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC) 117 struct hdac_hda_priv *hda_priv; 118 struct hda_codec *codec; 119 int type = HDA_DEV_LEGACY; 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, retry = 0; 127 128 do { 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 } while (resp == -1 && retry++ < CODEC_PROBE_RETRIES); 134 135 if (resp == -1) 136 return -EIO; 137 dev_dbg(sdev->dev, "HDA codec #%d probed OK: response: %x\n", 138 address, resp); 139 140 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC) 141 hda_priv = devm_kzalloc(sdev->dev, sizeof(*hda_priv), GFP_KERNEL); 142 if (!hda_priv) 143 return -ENOMEM; 144 145 hda_priv->codec.bus = hbus; 146 hdev = &hda_priv->codec.core; 147 codec = &hda_priv->codec; 148 149 /* only probe ASoC codec drivers for HDAC-HDMI */ 150 if (!hda_codec_use_common_hdmi && (resp & 0xFFFF0000) == IDISP_VID_INTEL) 151 type = HDA_DEV_ASOC; 152 153 ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev, type); 154 if (ret < 0) 155 return ret; 156 157 if ((resp & 0xFFFF0000) == IDISP_VID_INTEL) { 158 if (!hdev->bus->audio_component) { 159 dev_dbg(sdev->dev, 160 "iDisp hw present but no driver\n"); 161 ret = -ENOENT; 162 goto out; 163 } 164 hda_priv->need_display_power = true; 165 } 166 167 if (is_generic_config(hbus)) 168 codec->probe_id = HDA_CODEC_ID_GENERIC; 169 else 170 codec->probe_id = 0; 171 172 if (type == HDA_DEV_LEGACY) { 173 ret = hda_codec_load_module(codec); 174 /* 175 * handle ret==0 (no driver bound) as an error, but pass 176 * other return codes without modification 177 */ 178 if (ret == 0) 179 ret = -ENOENT; 180 } 181 182 out: 183 if (ret < 0) { 184 snd_hdac_device_unregister(hdev); 185 put_device(&hdev->dev); 186 } 187 #else 188 hdev = devm_kzalloc(sdev->dev, sizeof(*hdev), GFP_KERNEL); 189 if (!hdev) 190 return -ENOMEM; 191 192 ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev, HDA_DEV_ASOC); 193 #endif 194 195 return ret; 196 } 197 198 /* Codec initialization */ 199 void hda_codec_probe_bus(struct snd_sof_dev *sdev, 200 bool hda_codec_use_common_hdmi) 201 { 202 struct hdac_bus *bus = sof_to_bus(sdev); 203 int i, ret; 204 205 /* probe codecs in avail slots */ 206 for (i = 0; i < HDA_MAX_CODECS; i++) { 207 208 if (!(bus->codec_mask & (1 << i))) 209 continue; 210 211 ret = hda_codec_probe(sdev, i, hda_codec_use_common_hdmi); 212 if (ret < 0) { 213 dev_warn(bus->dev, "codec #%d probe error, ret: %d\n", 214 i, ret); 215 bus->codec_mask &= ~BIT(i); 216 } 217 } 218 } 219 EXPORT_SYMBOL_NS(hda_codec_probe_bus, SND_SOC_SOF_HDA_AUDIO_CODEC); 220 221 #if IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI) || \ 222 IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI) 223 224 void hda_codec_i915_display_power(struct snd_sof_dev *sdev, bool enable) 225 { 226 struct hdac_bus *bus = sof_to_bus(sdev); 227 228 if (HDA_IDISP_CODEC(bus->codec_mask)) { 229 dev_dbg(bus->dev, "Turning i915 HDAC power %d\n", enable); 230 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, enable); 231 } 232 } 233 EXPORT_SYMBOL_NS(hda_codec_i915_display_power, SND_SOC_SOF_HDA_AUDIO_CODEC_I915); 234 235 int hda_codec_i915_init(struct snd_sof_dev *sdev) 236 { 237 struct hdac_bus *bus = sof_to_bus(sdev); 238 int ret; 239 240 /* i915 exposes a HDA codec for HDMI audio */ 241 ret = snd_hdac_i915_init(bus); 242 if (ret < 0) 243 return ret; 244 245 /* codec_mask not yet known, power up for probe */ 246 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true); 247 248 return 0; 249 } 250 EXPORT_SYMBOL_NS(hda_codec_i915_init, SND_SOC_SOF_HDA_AUDIO_CODEC_I915); 251 252 int hda_codec_i915_exit(struct snd_sof_dev *sdev) 253 { 254 struct hdac_bus *bus = sof_to_bus(sdev); 255 256 if (!bus->audio_component) 257 return 0; 258 259 /* power down unconditionally */ 260 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false); 261 262 return snd_hdac_i915_exit(bus); 263 } 264 EXPORT_SYMBOL_NS(hda_codec_i915_exit, SND_SOC_SOF_HDA_AUDIO_CODEC_I915); 265 266 #endif 267 268 MODULE_LICENSE("Dual BSD/GPL"); 269