264 lines
6.7 KiB
C
264 lines
6.7 KiB
C
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// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
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//
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// This file is provided under a dual BSD/GPLv2 license. When using or
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// redistributing this file, you may do so under either license.
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//
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// Copyright(c) 2018 Intel Corporation. All rights reserved.
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//
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// Authors: Keyon Jie <yang.jie@linux.intel.com>
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//
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#include <linux/module.h>
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#include <sound/hdaudio_ext.h>
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#include <sound/hda_register.h>
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#include <sound/hda_codec.h>
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#include <sound/hda_i915.h>
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#include <sound/sof.h>
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#include "../ops.h"
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#include "hda.h"
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)
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#include "../../codecs/hdac_hda.h"
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#endif /* CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC */
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)
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#define IDISP_VID_INTEL 0x80860000
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/* load the legacy HDA codec driver */
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static int request_codec_module(struct hda_codec *codec)
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{
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#ifdef MODULE
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char alias[MODULE_NAME_LEN];
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const char *mod = NULL;
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switch (codec->probe_id) {
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case HDA_CODEC_ID_GENERIC:
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#if IS_MODULE(CONFIG_SND_HDA_GENERIC)
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mod = "snd-hda-codec-generic";
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#endif
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break;
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default:
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snd_hdac_codec_modalias(&codec->core, alias, sizeof(alias));
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mod = alias;
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break;
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}
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if (mod) {
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dev_dbg(&codec->core.dev, "loading codec module: %s\n", mod);
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request_module(mod);
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}
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#endif /* MODULE */
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return device_attach(hda_codec_dev(codec));
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}
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static int hda_codec_load_module(struct hda_codec *codec)
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{
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int ret = request_codec_module(codec);
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if (ret <= 0) {
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codec->probe_id = HDA_CODEC_ID_GENERIC;
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ret = request_codec_module(codec);
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}
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return ret;
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}
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/* enable controller wake up event for all codecs with jack connectors */
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void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev, bool enable)
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{
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struct hda_bus *hbus = sof_to_hbus(sdev);
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struct hdac_bus *bus = sof_to_bus(sdev);
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struct hda_codec *codec;
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unsigned int mask = 0;
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if (enable) {
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list_for_each_codec(codec, hbus)
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if (codec->jacktbl.used)
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mask |= BIT(codec->core.addr);
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}
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snd_hdac_chip_updatew(bus, WAKEEN, STATESTS_INT_MASK, mask);
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}
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/* check jack status after resuming from suspend mode */
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void hda_codec_jack_check(struct snd_sof_dev *sdev)
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{
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struct hda_bus *hbus = sof_to_hbus(sdev);
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struct hda_codec *codec;
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list_for_each_codec(codec, hbus)
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/*
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* Wake up all jack-detecting codecs regardless whether an event
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* has been recorded in STATESTS
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*/
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if (codec->jacktbl.used)
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pm_request_resume(&codec->core.dev);
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}
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#else
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void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev, bool enable) {}
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void hda_codec_jack_check(struct snd_sof_dev *sdev) {}
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#endif /* CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC */
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EXPORT_SYMBOL_NS(hda_codec_jack_wake_enable, SND_SOC_SOF_HDA_AUDIO_CODEC);
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EXPORT_SYMBOL_NS(hda_codec_jack_check, SND_SOC_SOF_HDA_AUDIO_CODEC);
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#if IS_ENABLED(CONFIG_SND_HDA_GENERIC)
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#define is_generic_config(bus) \
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((bus)->modelname && !strcmp((bus)->modelname, "generic"))
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#else
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#define is_generic_config(x) 0
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#endif
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/* probe individual codec */
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static int hda_codec_probe(struct snd_sof_dev *sdev, int address,
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bool hda_codec_use_common_hdmi)
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{
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)
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struct hdac_hda_priv *hda_priv;
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struct hda_codec *codec;
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int type = HDA_DEV_LEGACY;
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#endif
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struct hda_bus *hbus = sof_to_hbus(sdev);
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struct hdac_device *hdev;
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u32 hda_cmd = (address << 28) | (AC_NODE_ROOT << 20) |
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(AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID;
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u32 resp = -1;
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int ret;
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mutex_lock(&hbus->core.cmd_mutex);
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snd_hdac_bus_send_cmd(&hbus->core, hda_cmd);
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snd_hdac_bus_get_response(&hbus->core, address, &resp);
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mutex_unlock(&hbus->core.cmd_mutex);
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if (resp == -1)
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return -EIO;
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dev_dbg(sdev->dev, "HDA codec #%d probed OK: response: %x\n",
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address, resp);
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)
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hda_priv = devm_kzalloc(sdev->dev, sizeof(*hda_priv), GFP_KERNEL);
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if (!hda_priv)
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return -ENOMEM;
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hda_priv->codec.bus = hbus;
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hdev = &hda_priv->codec.core;
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codec = &hda_priv->codec;
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/* only probe ASoC codec drivers for HDAC-HDMI */
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if (!hda_codec_use_common_hdmi && (resp & 0xFFFF0000) == IDISP_VID_INTEL)
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type = HDA_DEV_ASOC;
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ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev, type);
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if (ret < 0)
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return ret;
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if ((resp & 0xFFFF0000) == IDISP_VID_INTEL) {
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if (!hdev->bus->audio_component) {
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dev_dbg(sdev->dev,
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"iDisp hw present but no driver\n");
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ret = -ENOENT;
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goto out;
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}
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hda_priv->need_display_power = true;
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}
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if (is_generic_config(hbus))
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codec->probe_id = HDA_CODEC_ID_GENERIC;
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else
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codec->probe_id = 0;
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if (type == HDA_DEV_LEGACY) {
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ret = hda_codec_load_module(codec);
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/*
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* handle ret==0 (no driver bound) as an error, but pass
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* other return codes without modification
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*/
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if (ret == 0)
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ret = -ENOENT;
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}
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out:
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if (ret < 0) {
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snd_hdac_device_unregister(hdev);
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put_device(&hdev->dev);
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}
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#else
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hdev = devm_kzalloc(sdev->dev, sizeof(*hdev), GFP_KERNEL);
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if (!hdev)
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return -ENOMEM;
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ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev, HDA_DEV_ASOC);
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#endif
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return ret;
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}
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/* Codec initialization */
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void hda_codec_probe_bus(struct snd_sof_dev *sdev,
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bool hda_codec_use_common_hdmi)
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{
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struct hdac_bus *bus = sof_to_bus(sdev);
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int i, ret;
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/* probe codecs in avail slots */
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for (i = 0; i < HDA_MAX_CODECS; i++) {
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if (!(bus->codec_mask & (1 << i)))
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continue;
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ret = hda_codec_probe(sdev, i, hda_codec_use_common_hdmi);
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if (ret < 0) {
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dev_warn(bus->dev, "codec #%d probe error, ret: %d\n",
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i, ret);
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bus->codec_mask &= ~BIT(i);
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}
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}
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}
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EXPORT_SYMBOL_NS(hda_codec_probe_bus, SND_SOC_SOF_HDA_AUDIO_CODEC);
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#if IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI) || \
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IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI)
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void hda_codec_i915_display_power(struct snd_sof_dev *sdev, bool enable)
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{
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struct hdac_bus *bus = sof_to_bus(sdev);
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if (HDA_IDISP_CODEC(bus->codec_mask)) {
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dev_dbg(bus->dev, "Turning i915 HDAC power %d\n", enable);
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snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, enable);
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}
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}
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EXPORT_SYMBOL_NS(hda_codec_i915_display_power, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);
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int hda_codec_i915_init(struct snd_sof_dev *sdev)
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{
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struct hdac_bus *bus = sof_to_bus(sdev);
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int ret;
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/* i915 exposes a HDA codec for HDMI audio */
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ret = snd_hdac_i915_init(bus);
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if (ret < 0)
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return ret;
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/* codec_mask not yet known, power up for probe */
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snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true);
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return 0;
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}
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EXPORT_SYMBOL_NS(hda_codec_i915_init, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);
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int hda_codec_i915_exit(struct snd_sof_dev *sdev)
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{
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struct hdac_bus *bus = sof_to_bus(sdev);
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if (!bus->audio_component)
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return 0;
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/* power down unconditionally */
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snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false);
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return snd_hdac_i915_exit(bus);
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}
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EXPORT_SYMBOL_NS(hda_codec_i915_exit, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);
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#endif
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MODULE_LICENSE("Dual BSD/GPL");
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