sound/soc/sof/intel/hda-codec.c

   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");