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 #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");