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

   1 // SPDX-License-Identifier: (GPL-2.0 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 hda_codec_load_module(struct hda_codec *codec)
  28 {
  29 #ifdef MODULE
  30         char alias[MODULE_NAME_LEN];
  31         const char *module = alias;
  32
  33         snd_hdac_codec_modalias(&codec->core, alias, sizeof(alias));
  34         dev_dbg(&codec->core.dev, "loading codec module: %s\n", module);
  35         request_module(module);
  36 #endif
  37         return device_attach(hda_codec_dev(codec));
  38 }
  39
  40 /* enable controller wake up event for all codecs with jack connectors */
  41 void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev)
  42 {
  43         struct hda_bus *hbus = sof_to_hbus(sdev);
  44         struct hdac_bus *bus = sof_to_bus(sdev);
  45         struct hda_codec *codec;
  46         unsigned int mask = 0;
  47
  48         list_for_each_codec(codec, hbus)
  49                 if (codec->jacktbl.used)
  50                         mask |= BIT(codec->core.addr);
  51
  52         snd_hdac_chip_updatew(bus, WAKEEN, STATESTS_INT_MASK, mask);
  53 }
  54
  55 /* check jack status after resuming from suspend mode */
  56 void hda_codec_jack_check(struct snd_sof_dev *sdev)
  57 {
  58         struct hda_bus *hbus = sof_to_hbus(sdev);
  59         struct hdac_bus *bus = sof_to_bus(sdev);
  60         struct hda_codec *codec;
  61
  62         /* disable controller Wake Up event*/
  63         snd_hdac_chip_updatew(bus, WAKEEN, STATESTS_INT_MASK, 0);
  64
  65         list_for_each_codec(codec, hbus)
  66                 /*
  67                  * Wake up all jack-detecting codecs regardless whether an event
  68                  * has been recorded in STATESTS
  69                  */
  70                 if (codec->jacktbl.used)
  71                         schedule_delayed_work(&codec->jackpoll_work,
  72                                               codec->jackpoll_interval);
  73 }
  74 #else
  75 void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev) {}
  76 void hda_codec_jack_check(struct snd_sof_dev *sdev) {}
  77 #endif /* CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC */
  78 EXPORT_SYMBOL_NS(hda_codec_jack_wake_enable, SND_SOC_SOF_HDA_AUDIO_CODEC);
  79 EXPORT_SYMBOL_NS(hda_codec_jack_check, SND_SOC_SOF_HDA_AUDIO_CODEC);
  80
  81 /* probe individual codec */
  82 static int hda_codec_probe(struct snd_sof_dev *sdev, int address,
  83                            bool hda_codec_use_common_hdmi)
  84 {
  85 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)
  86         struct hdac_hda_priv *hda_priv;
  87 #endif
  88         struct hda_bus *hbus = sof_to_hbus(sdev);
  89         struct hdac_device *hdev;
  90         u32 hda_cmd = (address << 28) | (AC_NODE_ROOT << 20) |
  91                 (AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID;
  92         u32 resp = -1;
  93         int ret;
  94
  95         mutex_lock(&hbus->core.cmd_mutex);
  96         snd_hdac_bus_send_cmd(&hbus->core, hda_cmd);
  97         snd_hdac_bus_get_response(&hbus->core, address, &resp);
  98         mutex_unlock(&hbus->core.cmd_mutex);
  99         if (resp == -1)
 100                 return -EIO;
 101         dev_dbg(sdev->dev, "HDA codec #%d probed OK: response: %x\n",
 102                 address, resp);
 103
 104 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)
 105         hda_priv = devm_kzalloc(sdev->dev, sizeof(*hda_priv), GFP_KERNEL);
 106         if (!hda_priv)
 107                 return -ENOMEM;
 108
 109         hda_priv->codec.bus = hbus;
 110         hdev = &hda_priv->codec.core;
 111
 112         ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev);
 113         if (ret < 0)
 114                 return ret;
 115
 116         if ((resp & 0xFFFF0000) == IDISP_VID_INTEL) {
 117                 if (!hdev->bus->audio_component) {
 118                         dev_dbg(sdev->dev,
 119                                 "iDisp hw present but no driver\n");
 120                         return -ENOENT;
 121                 }
 122                 hda_priv->need_display_power = true;
 123         }
 124
 125         /*
 126          * if common HDMI codec driver is not used, codec load
 127          * is skipped here and hdac_hdmi is used instead
 128          */
 129         if (hda_codec_use_common_hdmi ||
 130             (resp & 0xFFFF0000) != IDISP_VID_INTEL) {
 131                 hdev->type = HDA_DEV_LEGACY;
 132                 ret = hda_codec_load_module(&hda_priv->codec);
 133                 /*
 134                  * handle ret==0 (no driver bound) as an error, but pass
 135                  * other return codes without modification
 136                  */
 137                 if (ret == 0)
 138                         ret = -ENOENT;
 139         }
 140
 141         return ret;
 142 #else
 143         hdev = devm_kzalloc(sdev->dev, sizeof(*hdev), GFP_KERNEL);
 144         if (!hdev)
 145                 return -ENOMEM;
 146
 147         ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev);
 148
 149         return ret;
 150 #endif
 151 }
 152
 153 /* Codec initialization */
 154 void hda_codec_probe_bus(struct snd_sof_dev *sdev,
 155                          bool hda_codec_use_common_hdmi)
 156 {
 157         struct hdac_bus *bus = sof_to_bus(sdev);
 158         int i, ret;
 159
 160         /* probe codecs in avail slots */
 161         for (i = 0; i < HDA_MAX_CODECS; i++) {
 162
 163                 if (!(bus->codec_mask & (1 << i)))
 164                         continue;
 165
 166                 ret = hda_codec_probe(sdev, i, hda_codec_use_common_hdmi);
 167                 if (ret < 0) {
 168                         dev_warn(bus->dev, "codec #%d probe error, ret: %d\n",
 169                                  i, ret);
 170                         bus->codec_mask &= ~BIT(i);
 171                 }
 172         }
 173 }
 174 EXPORT_SYMBOL_NS(hda_codec_probe_bus, SND_SOC_SOF_HDA_AUDIO_CODEC);
 175
 176 #if IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI) || \
 177         IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI)
 178
 179 void hda_codec_i915_display_power(struct snd_sof_dev *sdev, bool enable)
 180 {
 181         struct hdac_bus *bus = sof_to_bus(sdev);
 182
 183         if (HDA_IDISP_CODEC(bus->codec_mask)) {
 184                 dev_dbg(bus->dev, "Turning i915 HDAC power %d\n", enable);
 185                 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, enable);
 186         }
 187 }
 188 EXPORT_SYMBOL_NS(hda_codec_i915_display_power, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);
 189
 190 int hda_codec_i915_init(struct snd_sof_dev *sdev)
 191 {
 192         struct hdac_bus *bus = sof_to_bus(sdev);
 193         int ret;
 194
 195         /* i915 exposes a HDA codec for HDMI audio */
 196         ret = snd_hdac_i915_init(bus);
 197         if (ret < 0)
 198                 return ret;
 199
 200         /* codec_mask not yet known, power up for probe */
 201         snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true);
 202
 203         return 0;
 204 }
 205 EXPORT_SYMBOL_NS(hda_codec_i915_init, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);
 206
 207 int hda_codec_i915_exit(struct snd_sof_dev *sdev)
 208 {
 209         struct hdac_bus *bus = sof_to_bus(sdev);
 210         int ret;
 211
 212         if (!bus->audio_component)
 213                 return 0;
 214
 215         /* power down unconditionally */
 216         snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false);
 217
 218         ret = snd_hdac_i915_exit(bus);
 219
 220         return ret;
 221 }
 222 EXPORT_SYMBOL_NS(hda_codec_i915_exit, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);
 223
 224 #endif
 225
 226 MODULE_LICENSE("Dual BSD/GPL");