LXR linux/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 */
  27static 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
  53static 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 */
  66void 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 */
  81void 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
 100void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev) {}
 101void hda_codec_jack_check(struct snd_sof_dev *sdev) {}
 102#endif /* CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC */
 103EXPORT_SYMBOL_NS(hda_codec_jack_wake_enable, SND_SOC_SOF_HDA_AUDIO_CODEC);
 104EXPORT_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 */
 114static 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 */
 193void 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}
 213EXPORT_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
 218void 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}
 227EXPORT_SYMBOL_NS(hda_codec_i915_display_power, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);
 228
 229int 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}
 244EXPORT_SYMBOL_NS(hda_codec_i915_init, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);
 245
 246int 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}
 258EXPORT_SYMBOL_NS(hda_codec_i915_exit, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);
 259
 260#endif
 261
 262MODULE_LICENSE("Dual BSD/GPL");
 263