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