// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *
 *  hdmi.c - routines for HDMI/DisplayPort codecs
 *
 *  Copyright(c) 2008-2010 Intel Corporation
 *  Copyright (c) 2006 ATI Technologies Inc.
 *  Copyright (c) 2008 NVIDIA Corp.  All rights reserved.
 *  Copyright (c) 2008 Wei Ni <wni@nvidia.com>
 *  Copyright (c) 2013 Anssi Hannula <anssi.hannula@iki.fi>
 *
 *  Authors:
 *                      Wu Fengguang <wfg@linux.intel.com>
 *
 *  Maintained by:
 *                      Wu Fengguang <wfg@linux.intel.com>
 */

#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <sound/core.h>
#include <sound/jack.h>
#include <sound/asoundef.h>
#include <sound/tlv.h>
#include <sound/hdaudio.h>
#include <sound/hda_i915.h>
#include <sound/hda_chmap.h>
#include <sound/hda_codec.h>
#include "hda_local.h"
#include "hda_jack.h"
#include "hda_controller.h"
#include "hdmi_local.h"

static bool static_hdmi_pcm;
module_param(static_hdmi_pcm, bool, 0644);
MODULE_PARM_DESC(static_hdmi_pcm, "Don't restrict PCM parameters per ELD info");

static bool enable_acomp = true;
module_param(enable_acomp, bool, 0444);
MODULE_PARM_DESC(enable_acomp, "Enable audio component binding (default=yes)");

static bool enable_all_pins;
module_param(enable_all_pins, bool, 0444);
MODULE_PARM_DESC(enable_all_pins, "Forcibly enable all pins");

int snd_hda_hdmi_pin_id_to_pin_index(struct hda_codec *codec,
                                     hda_nid_t pin_nid, int dev_id)
{
        struct hdmi_spec *spec = codec->spec;
        int pin_idx;
        struct hdmi_spec_per_pin *per_pin;

        /*
         * (dev_id == -1) means it is NON-MST pin
         * return the first virtual pin on this port
         */
        if (dev_id == -1)
                dev_id = 0;

        for (pin_idx = 0; pin_idx < spec->num_pins; pin_idx++) {
                per_pin = get_pin(spec, pin_idx);
                if ((per_pin->pin_nid == pin_nid) &&
                        (per_pin->dev_id == dev_id))
                        return pin_idx;
        }

        codec_warn(codec, "HDMI: pin NID 0x%x not registered\n", pin_nid);
        return -EINVAL;
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_pin_id_to_pin_index, "SND_HDA_CODEC_HDMI");

static int hinfo_to_pcm_index(struct hda_codec *codec,
                        struct hda_pcm_stream *hinfo)
{
        struct hdmi_spec *spec = codec->spec;
        int pcm_idx;

        for (pcm_idx = 0; pcm_idx < spec->pcm_used; pcm_idx++)
                if (get_pcm_rec(spec, pcm_idx)->stream == hinfo)
                        return pcm_idx;

        codec_warn(codec, "HDMI: hinfo %p not tied to a PCM\n", hinfo);
        return -EINVAL;
}

static int hinfo_to_pin_index(struct hda_codec *codec,
                              struct hda_pcm_stream *hinfo)
{
        struct hdmi_spec *spec = codec->spec;
        struct hdmi_spec_per_pin *per_pin;
        int pin_idx;

        for (pin_idx = 0; pin_idx < spec->num_pins; pin_idx++) {
                per_pin = get_pin(spec, pin_idx);
                if (per_pin->pcm &&
                        per_pin->pcm->pcm->stream == hinfo)
                        return pin_idx;
        }

        codec_dbg(codec, "HDMI: hinfo %p (pcm %d) not registered\n", hinfo,
                  hinfo_to_pcm_index(codec, hinfo));
        return -EINVAL;
}

static struct hdmi_spec_per_pin *pcm_idx_to_pin(struct hdmi_spec *spec,
                                                int pcm_idx)
{
        int i;
        struct hdmi_spec_per_pin *per_pin;

        for (i = 0; i < spec->num_pins; i++) {
                per_pin = get_pin(spec, i);
                if (per_pin->pcm_idx == pcm_idx)
                        return per_pin;
        }
        return NULL;
}

static int cvt_nid_to_cvt_index(struct hda_codec *codec, hda_nid_t cvt_nid)
{
        struct hdmi_spec *spec = codec->spec;
        int cvt_idx;

        for (cvt_idx = 0; cvt_idx < spec->num_cvts; cvt_idx++)
                if (get_cvt(spec, cvt_idx)->cvt_nid == cvt_nid)
                        return cvt_idx;

        codec_warn(codec, "HDMI: cvt NID 0x%x not registered\n", cvt_nid);
        return -EINVAL;
}

static int hdmi_eld_ctl_info(struct snd_kcontrol *kcontrol,
                        struct snd_ctl_elem_info *uinfo)
{
        struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
        struct hdmi_spec *spec = codec->spec;
        struct hdmi_spec_per_pin *per_pin;
        struct hdmi_eld *eld;
        int pcm_idx;

        uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;

        pcm_idx = kcontrol->private_value;
        guard(mutex)(&spec->pcm_lock);
        per_pin = pcm_idx_to_pin(spec, pcm_idx);
        if (!per_pin) {
                /* no pin is bound to the pcm */
                uinfo->count = 0;
                return 0;
        }
        eld = &per_pin->sink_eld;
        uinfo->count = eld->eld_valid ? eld->eld_size : 0;
        return 0;
}

static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
                        struct snd_ctl_elem_value *ucontrol)
{
        struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
        struct hdmi_spec *spec = codec->spec;
        struct hdmi_spec_per_pin *per_pin;
        struct hdmi_eld *eld;
        int pcm_idx;

        pcm_idx = kcontrol->private_value;
        guard(mutex)(&spec->pcm_lock);
        per_pin = pcm_idx_to_pin(spec, pcm_idx);
        if (!per_pin) {
                /* no pin is bound to the pcm */
                memset(ucontrol->value.bytes.data, 0,
                       ARRAY_SIZE(ucontrol->value.bytes.data));
                return 0;
        }

        eld = &per_pin->sink_eld;
        if (eld->eld_size > ARRAY_SIZE(ucontrol->value.bytes.data) ||
            eld->eld_size > ELD_MAX_SIZE) {
                snd_BUG();
                return -EINVAL;
        }

        memset(ucontrol->value.bytes.data, 0,
               ARRAY_SIZE(ucontrol->value.bytes.data));
        if (eld->eld_valid)
                memcpy(ucontrol->value.bytes.data, eld->eld_buffer,
                       eld->eld_size);
        return 0;
}

static const struct snd_kcontrol_new eld_bytes_ctl = {
        .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE |
                SNDRV_CTL_ELEM_ACCESS_SKIP_CHECK,
        .iface = SNDRV_CTL_ELEM_IFACE_PCM,
        .name = "ELD",
        .info = hdmi_eld_ctl_info,
        .get = hdmi_eld_ctl_get,
};

static int hdmi_create_eld_ctl(struct hda_codec *codec, int pcm_idx,
                        int device)
{
        struct snd_kcontrol *kctl;
        struct hdmi_spec *spec = codec->spec;
        int err;

        kctl = snd_ctl_new1(&eld_bytes_ctl, codec);
        if (!kctl)
                return -ENOMEM;
        kctl->private_value = pcm_idx;
        kctl->id.device = device;

        /* no pin nid is associated with the kctl now
         * tbd: associate pin nid to eld ctl later
         */
        err = snd_hda_ctl_add(codec, 0, kctl);
        if (err < 0)
                return err;

        get_hdmi_pcm(spec, pcm_idx)->eld_ctl = kctl;
        return 0;
}

#ifdef BE_PARANOID
static void hdmi_get_dip_index(struct hda_codec *codec, hda_nid_t pin_nid,
                                int *packet_index, int *byte_index)
{
        int val;

        val = snd_hda_codec_read(codec, pin_nid, 0,
                                 AC_VERB_GET_HDMI_DIP_INDEX, 0);

        *packet_index = val >> 5;
        *byte_index = val & 0x1f;
}
#endif

static void hdmi_set_dip_index(struct hda_codec *codec, hda_nid_t pin_nid,
                                int packet_index, int byte_index)
{
        int val;

        val = (packet_index << 5) | (byte_index & 0x1f);

        snd_hda_codec_write(codec, pin_nid, 0, AC_VERB_SET_HDMI_DIP_INDEX, val);
}

static void hdmi_write_dip_byte(struct hda_codec *codec, hda_nid_t pin_nid,
                                unsigned char val)
{
        snd_hda_codec_write(codec, pin_nid, 0, AC_VERB_SET_HDMI_DIP_DATA, val);
}

static void hdmi_init_pin(struct hda_codec *codec, hda_nid_t pin_nid)
{
        struct hdmi_spec *spec = codec->spec;
        int pin_out;

        /* Unmute */
        if (get_wcaps(codec, pin_nid) & AC_WCAP_OUT_AMP)
                snd_hda_codec_write(codec, pin_nid, 0,
                                AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE);

        if (spec->dyn_pin_out)
                /* Disable pin out until stream is active */
                pin_out = 0;
        else
                /* Enable pin out: some machines with GM965 gets broken output
                 * when the pin is disabled or changed while using with HDMI
                 */
                pin_out = PIN_OUT;

        snd_hda_codec_write(codec, pin_nid, 0,
                            AC_VERB_SET_PIN_WIDGET_CONTROL, pin_out);
}

/*
 * ELD proc files
 */

#ifdef CONFIG_SND_PROC_FS
static void print_eld_info(struct snd_info_entry *entry,
                           struct snd_info_buffer *buffer)
{
        struct hdmi_spec_per_pin *per_pin = entry->private_data;

        guard(mutex)(&per_pin->lock);
        snd_hdmi_print_eld_info(&per_pin->sink_eld, buffer, per_pin->pin_nid,
                                per_pin->dev_id, per_pin->cvt_nid);
}

static void write_eld_info(struct snd_info_entry *entry,
                           struct snd_info_buffer *buffer)
{
        struct hdmi_spec_per_pin *per_pin = entry->private_data;

        guard(mutex)(&per_pin->lock);
        snd_hdmi_write_eld_info(&per_pin->sink_eld, buffer);
}

static int eld_proc_new(struct hdmi_spec_per_pin *per_pin, int index)
{
        char name[32];
        struct hda_codec *codec = per_pin->codec;
        struct snd_info_entry *entry;
        int err;

        snprintf(name, sizeof(name), "eld#%d.%d", codec->addr, index);
        err = snd_card_proc_new(codec->card, name, &entry);
        if (err < 0)
                return err;

        snd_info_set_text_ops(entry, per_pin, print_eld_info);
        entry->c.text.write = write_eld_info;
        entry->mode |= 0200;
        per_pin->proc_entry = entry;

        return 0;
}

static void eld_proc_free(struct hdmi_spec_per_pin *per_pin)
{
        if (!per_pin->codec->bus->shutdown) {
                snd_info_free_entry(per_pin->proc_entry);
                per_pin->proc_entry = NULL;
        }
}
#else
static inline int eld_proc_new(struct hdmi_spec_per_pin *per_pin,
                               int index)
{
        return 0;
}
static inline void eld_proc_free(struct hdmi_spec_per_pin *per_pin)
{
}
#endif

/*
 * Audio InfoFrame routines
 */

/*
 * Enable Audio InfoFrame Transmission
 */
static void hdmi_start_infoframe_trans(struct hda_codec *codec,
                                       hda_nid_t pin_nid)
{
        hdmi_set_dip_index(codec, pin_nid, 0x0, 0x0);
        snd_hda_codec_write(codec, pin_nid, 0, AC_VERB_SET_HDMI_DIP_XMIT,
                                                AC_DIPXMIT_BEST);
}

/*
 * Disable Audio InfoFrame Transmission
 */
static void hdmi_stop_infoframe_trans(struct hda_codec *codec,
                                      hda_nid_t pin_nid)
{
        hdmi_set_dip_index(codec, pin_nid, 0x0, 0x0);
        snd_hda_codec_write(codec, pin_nid, 0, AC_VERB_SET_HDMI_DIP_XMIT,
                                                AC_DIPXMIT_DISABLE);
}

static void hdmi_debug_dip_size(struct hda_codec *codec, hda_nid_t pin_nid)
{
#ifdef CONFIG_SND_DEBUG_VERBOSE
        int i;
        int size;

        size = snd_hdmi_get_eld_size(codec, pin_nid);
        codec_dbg(codec, "HDMI: ELD buf size is %d\n", size);

        for (i = 0; i < 8; i++) {
                size = snd_hda_codec_read(codec, pin_nid, 0,
                                                AC_VERB_GET_HDMI_DIP_SIZE, i);
                codec_dbg(codec, "HDMI: DIP GP[%d] buf size is %d\n", i, size);
        }
#endif
}

static void hdmi_clear_dip_buffers(struct hda_codec *codec, hda_nid_t pin_nid)
{
#ifdef BE_PARANOID
        int i, j;
        int size;
        int pi, bi;
        for (i = 0; i < 8; i++) {
                size = snd_hda_codec_read(codec, pin_nid, 0,
                                                AC_VERB_GET_HDMI_DIP_SIZE, i);
                if (size == 0)
                        continue;

                hdmi_set_dip_index(codec, pin_nid, i, 0x0);
                for (j = 1; j < 1000; j++) {
                        hdmi_write_dip_byte(codec, pin_nid, 0x0);
                        hdmi_get_dip_index(codec, pin_nid, &pi, &bi);
                        if (pi != i)
                                codec_dbg(codec, "dip index %d: %d != %d\n",
                                                bi, pi, i);
                        if (bi == 0) /* byte index wrapped around */
                                break;
                }
                codec_dbg(codec,
                        "HDMI: DIP GP[%d] buf reported size=%d, written=%d\n",
                        i, size, j);
        }
#endif
}

static void hdmi_checksum_audio_infoframe(struct hdmi_audio_infoframe *hdmi_ai)
{
        u8 *bytes = (u8 *)hdmi_ai;
        u8 sum = 0;
        int i;

        hdmi_ai->checksum = 0;

        for (i = 0; i < sizeof(*hdmi_ai); i++)
                sum += bytes[i];

        hdmi_ai->checksum = -sum;
}

static void hdmi_fill_audio_infoframe(struct hda_codec *codec,
                                      hda_nid_t pin_nid,
                                      u8 *dip, int size)
{
        int i;

        hdmi_debug_dip_size(codec, pin_nid);
        hdmi_clear_dip_buffers(codec, pin_nid); /* be paranoid */

        hdmi_set_dip_index(codec, pin_nid, 0x0, 0x0);
        for (i = 0; i < size; i++)
                hdmi_write_dip_byte(codec, pin_nid, dip[i]);
}

static bool hdmi_infoframe_uptodate(struct hda_codec *codec, hda_nid_t pin_nid,
                                    u8 *dip, int size)
{
        u8 val;
        int i;

        hdmi_set_dip_index(codec, pin_nid, 0x0, 0x0);
        if (snd_hda_codec_read(codec, pin_nid, 0, AC_VERB_GET_HDMI_DIP_XMIT, 0)
                                                            != AC_DIPXMIT_BEST)
                return false;

        for (i = 0; i < size; i++) {
                val = snd_hda_codec_read(codec, pin_nid, 0,
                                         AC_VERB_GET_HDMI_DIP_DATA, 0);
                if (val != dip[i])
                        return false;
        }

        return true;
}

static int hdmi_pin_get_eld(struct hda_codec *codec, hda_nid_t nid,
                            int dev_id, unsigned char *buf, int *eld_size)
{
        snd_hda_set_dev_select(codec, nid, dev_id);

        return snd_hdmi_get_eld(codec, nid, buf, eld_size);
}

static void hdmi_pin_setup_infoframe(struct hda_codec *codec,
                                     hda_nid_t pin_nid, int dev_id,
                                     int ca, int active_channels,
                                     int conn_type)
{
        struct hdmi_spec *spec = codec->spec;
        union audio_infoframe ai;

        memset(&ai, 0, sizeof(ai));
        if ((conn_type == 0) || /* HDMI */
                /* Nvidia DisplayPort: Nvidia HW expects same layout as HDMI */
                (conn_type == 1 && spec->nv_dp_workaround)) {
                struct hdmi_audio_infoframe *hdmi_ai = &ai.hdmi;

                if (conn_type == 0) { /* HDMI */
                        hdmi_ai->type           = 0x84;
                        hdmi_ai->ver            = 0x01;
                        hdmi_ai->len            = 0x0a;
                } else {/* Nvidia DP */
                        hdmi_ai->type           = 0x84;
                        hdmi_ai->ver            = 0x1b;
                        hdmi_ai->len            = 0x11 << 2;
                }
                hdmi_ai->CC02_CT47      = active_channels - 1;
                hdmi_ai->CA             = ca;
                hdmi_checksum_audio_infoframe(hdmi_ai);
        } else if (conn_type == 1) { /* DisplayPort */
                struct dp_audio_infoframe *dp_ai = &ai.dp;

                dp_ai->type             = 0x84;
                dp_ai->len              = 0x1b;
                dp_ai->ver              = 0x11 << 2;
                dp_ai->CC02_CT47        = active_channels - 1;
                dp_ai->CA               = ca;
        } else {
                codec_dbg(codec, "HDMI: unknown connection type at pin NID 0x%x\n", pin_nid);
                return;
        }

        snd_hda_set_dev_select(codec, pin_nid, dev_id);

        /*
         * sizeof(ai) is used instead of sizeof(*hdmi_ai) or
         * sizeof(*dp_ai) to avoid partial match/update problems when
         * the user switches between HDMI/DP monitors.
         */
        if (!hdmi_infoframe_uptodate(codec, pin_nid, ai.bytes,
                                        sizeof(ai))) {
                codec_dbg(codec, "%s: pin NID=0x%x channels=%d ca=0x%02x\n",
                          __func__, pin_nid, active_channels, ca);
                hdmi_stop_infoframe_trans(codec, pin_nid);
                hdmi_fill_audio_infoframe(codec, pin_nid,
                                            ai.bytes, sizeof(ai));
                hdmi_start_infoframe_trans(codec, pin_nid);
        }
}

void snd_hda_hdmi_setup_audio_infoframe(struct hda_codec *codec,
                                        struct hdmi_spec_per_pin *per_pin,
                                        bool non_pcm)
{
        struct hdmi_spec *spec = codec->spec;
        struct hdac_chmap *chmap = &spec->chmap;
        hda_nid_t pin_nid = per_pin->pin_nid;
        int dev_id = per_pin->dev_id;
        int channels = per_pin->channels;
        int active_channels;
        struct hdmi_eld *eld;
        int ca;

        if (!channels)
                return;

        snd_hda_set_dev_select(codec, pin_nid, dev_id);

        /* some HW (e.g. HSW+) needs reprogramming the amp at each time */
        if (get_wcaps(codec, pin_nid) & AC_WCAP_OUT_AMP)
                snd_hda_codec_write(codec, pin_nid, 0,
                                            AC_VERB_SET_AMP_GAIN_MUTE,
                                            AMP_OUT_UNMUTE);

        eld = &per_pin->sink_eld;

        ca = snd_hdac_channel_allocation(&codec->core,
                        eld->info.spk_alloc, channels,
                        per_pin->chmap_set, non_pcm, per_pin->chmap);

        active_channels = snd_hdac_get_active_channels(ca);

        chmap->ops.set_channel_count(&codec->core, per_pin->cvt_nid,
                                                active_channels);

        /*
         * always configure channel mapping, it may have been changed by the
         * user in the meantime
         */
        snd_hdac_setup_channel_mapping(&spec->chmap,
                                pin_nid, non_pcm, ca, channels,
                                per_pin->chmap, per_pin->chmap_set);

        spec->ops.pin_setup_infoframe(codec, pin_nid, dev_id,
                                      ca, active_channels, eld->info.conn_type);

        per_pin->non_pcm = non_pcm;
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_setup_audio_infoframe, "SND_HDA_CODEC_HDMI");

/*
 * Unsolicited events
 */

static void hdmi_present_sense(struct hdmi_spec_per_pin *per_pin, int repoll);

void snd_hda_hdmi_check_presence_and_report(struct hda_codec *codec,
                                            hda_nid_t nid, int dev_id)
{
        struct hdmi_spec *spec = codec->spec;
        int pin_idx = pin_id_to_pin_index(codec, nid, dev_id);

        if (pin_idx < 0)
                return;
        guard(mutex)(&spec->pcm_lock);
        hdmi_present_sense(get_pin(spec, pin_idx), 1);
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_check_presence_and_report,
                     "SND_HDA_CODEC_HDMI");

static void jack_callback(struct hda_codec *codec,
                          struct hda_jack_callback *jack)
{
        /* stop polling when notification is enabled */
        if (codec_has_acomp(codec))
                return;

        snd_hda_hdmi_check_presence_and_report(codec, jack->nid, jack->dev_id);
}

static void hdmi_intrinsic_event(struct hda_codec *codec, unsigned int res,
                                 struct hda_jack_tbl *jack)
{
        jack->jack_dirty = 1;

        codec_dbg(codec,
                "HDMI hot plug event: Codec=%d NID=0x%x Device=%d Inactive=%d Presence_Detect=%d ELD_Valid=%d\n",
                codec->addr, jack->nid, jack->dev_id, !!(res & AC_UNSOL_RES_IA),
                !!(res & AC_UNSOL_RES_PD), !!(res & AC_UNSOL_RES_ELDV));

        snd_hda_hdmi_check_presence_and_report(codec, jack->nid, jack->dev_id);
}

static void hdmi_non_intrinsic_event(struct hda_codec *codec, unsigned int res)
{
        int tag = res >> AC_UNSOL_RES_TAG_SHIFT;
        int subtag = (res & AC_UNSOL_RES_SUBTAG) >> AC_UNSOL_RES_SUBTAG_SHIFT;
        int cp_state = !!(res & AC_UNSOL_RES_CP_STATE);
        int cp_ready = !!(res & AC_UNSOL_RES_CP_READY);

        codec_info(codec,
                "HDMI CP event: CODEC=%d TAG=%d SUBTAG=0x%x CP_STATE=%d CP_READY=%d\n",
                codec->addr,
                tag,
                subtag,
                cp_state,
                cp_ready);

        /* TODO */
        if (cp_state) {
                ;
        }
        if (cp_ready) {
                ;
        }
}

void snd_hda_hdmi_generic_unsol_event(struct hda_codec *codec, unsigned int res)
{
        int tag = res >> AC_UNSOL_RES_TAG_SHIFT;
        int subtag = (res & AC_UNSOL_RES_SUBTAG) >> AC_UNSOL_RES_SUBTAG_SHIFT;
        struct hda_jack_tbl *jack;

        if (codec_has_acomp(codec))
                return;

        if (codec->dp_mst) {
                int dev_entry =
                        (res & AC_UNSOL_RES_DE) >> AC_UNSOL_RES_DE_SHIFT;

                jack = snd_hda_jack_tbl_get_from_tag(codec, tag, dev_entry);
        } else {
                jack = snd_hda_jack_tbl_get_from_tag(codec, tag, 0);
        }

        if (!jack) {
                codec_dbg(codec, "Unexpected HDMI event tag 0x%x\n", tag);
                return;
        }

        if (subtag == 0)
                hdmi_intrinsic_event(codec, res, jack);
        else
                hdmi_non_intrinsic_event(codec, res);
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_generic_unsol_event, "SND_HDA_CODEC_HDMI");

/*
 * Callbacks
 */

/* HBR should be Non-PCM, 8 channels */
#define is_hbr_format(format) \
        ((format & AC_FMT_TYPE_NON_PCM) && (format & AC_FMT_CHAN_MASK) == 7)

static int hdmi_pin_hbr_setup(struct hda_codec *codec, hda_nid_t pin_nid,
                              int dev_id, bool hbr)
{
        int pinctl, new_pinctl;

        if (snd_hda_query_pin_caps(codec, pin_nid) & AC_PINCAP_HBR) {
                snd_hda_set_dev_select(codec, pin_nid, dev_id);
                pinctl = snd_hda_codec_read(codec, pin_nid, 0,
                                            AC_VERB_GET_PIN_WIDGET_CONTROL, 0);

                if (pinctl < 0)
                        return hbr ? -EINVAL : 0;

                new_pinctl = pinctl & ~AC_PINCTL_EPT;
                if (hbr)
                        new_pinctl |= AC_PINCTL_EPT_HBR;
                else
                        new_pinctl |= AC_PINCTL_EPT_NATIVE;

                codec_dbg(codec,
                          "hdmi_pin_hbr_setup: NID=0x%x, %spinctl=0x%x\n",
                            pin_nid,
                            pinctl == new_pinctl ? "" : "new-",
                            new_pinctl);

                if (pinctl != new_pinctl)
                        snd_hda_codec_write(codec, pin_nid, 0,
                                            AC_VERB_SET_PIN_WIDGET_CONTROL,
                                            new_pinctl);
        } else if (hbr)
                return -EINVAL;

        return 0;
}

int snd_hda_hdmi_setup_stream(struct hda_codec *codec,
                              hda_nid_t cvt_nid,
                              hda_nid_t pin_nid, int dev_id,
                              u32 stream_tag, int format)
{
        struct hdmi_spec *spec = codec->spec;
        unsigned int param;
        int err;

        err = spec->ops.pin_hbr_setup(codec, pin_nid, dev_id,
                                      is_hbr_format(format));

        if (err) {
                codec_dbg(codec, "hdmi_setup_stream: HBR is not supported\n");
                return err;
        }

        if (spec->intel_hsw_fixup) {

                /*
                 * on recent platforms IEC Coding Type is required for HBR
                 * support, read current Digital Converter settings and set
                 * ICT bitfield if needed.
                 */
                param = snd_hda_codec_read(codec, cvt_nid, 0,
                                           AC_VERB_GET_DIGI_CONVERT_1, 0);

                param = (param >> 16) & ~(AC_DIG3_ICT);

                /* on recent platforms ICT mode is required for HBR support */
                if (is_hbr_format(format))
                        param |= 0x1;

                snd_hda_codec_write(codec, cvt_nid, 0,
                                    AC_VERB_SET_DIGI_CONVERT_3, param);
        }

        snd_hda_codec_setup_stream(codec, cvt_nid, stream_tag, 0, format);
        return 0;
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_setup_stream, "SND_HDA_CODEC_HDMI");

/* Try to find an available converter
 * If pin_idx is less then zero, just try to find an available converter.
 * Otherwise, try to find an available converter and get the cvt mux index
 * of the pin.
 */
static int hdmi_choose_cvt(struct hda_codec *codec,
                           int pin_idx, int *cvt_id,
                           bool silent)
{
        struct hdmi_spec *spec = codec->spec;
        struct hdmi_spec_per_pin *per_pin;
        struct hdmi_spec_per_cvt *per_cvt = NULL;
        int cvt_idx, mux_idx = 0;

        /* pin_idx < 0 means no pin will be bound to the converter */
        if (pin_idx < 0)
                per_pin = NULL;
        else
                per_pin = get_pin(spec, pin_idx);

        if (per_pin && per_pin->silent_stream) {
                cvt_idx = cvt_nid_to_cvt_index(codec, per_pin->cvt_nid);
                per_cvt = get_cvt(spec, cvt_idx);
                if (per_cvt->assigned && !silent)
                        return -EBUSY;
                if (cvt_id)
                        *cvt_id = cvt_idx;
                return 0;
        }

        /* Dynamically assign converter to stream */
        for (cvt_idx = 0; cvt_idx < spec->num_cvts; cvt_idx++) {
                per_cvt = get_cvt(spec, cvt_idx);

                /* Must not already be assigned */
                if (per_cvt->assigned || per_cvt->silent_stream)
                        continue;
                if (per_pin == NULL)
                        break;
                /* Must be in pin's mux's list of converters */
                for (mux_idx = 0; mux_idx < per_pin->num_mux_nids; mux_idx++)
                        if (per_pin->mux_nids[mux_idx] == per_cvt->cvt_nid)
                                break;
                /* Not in mux list */
                if (mux_idx == per_pin->num_mux_nids)
                        continue;
                break;
        }

        /* No free converters */
        if (cvt_idx == spec->num_cvts)
                return -EBUSY;

        if (per_pin != NULL)
                per_pin->mux_idx = mux_idx;

        if (cvt_id)
                *cvt_id = cvt_idx;

        return 0;
}

/* skeleton caller of pin_cvt_fixup ops */
static void pin_cvt_fixup(struct hda_codec *codec,
                          struct hdmi_spec_per_pin *per_pin,
                          hda_nid_t cvt_nid)
{
        struct hdmi_spec *spec = codec->spec;

        if (spec->ops.pin_cvt_fixup)
                spec->ops.pin_cvt_fixup(codec, per_pin, cvt_nid);
}

/* called in hdmi_pcm_open when no pin is assigned to the PCM */
static int hdmi_pcm_open_no_pin(struct hda_pcm_stream *hinfo,
                         struct hda_codec *codec,
                         struct snd_pcm_substream *substream)
{
        struct hdmi_spec *spec = codec->spec;
        struct snd_pcm_runtime *runtime = substream->runtime;
        int cvt_idx, pcm_idx;
        struct hdmi_spec_per_cvt *per_cvt = NULL;
        int err;

        pcm_idx = hinfo_to_pcm_index(codec, hinfo);
        if (pcm_idx < 0)
                return -EINVAL;

        err = hdmi_choose_cvt(codec, -1, &cvt_idx, false);
        if (err)
                return err;

        per_cvt = get_cvt(spec, cvt_idx);
        per_cvt->assigned = true;
        hinfo->nid = per_cvt->cvt_nid;

        pin_cvt_fixup(codec, NULL, per_cvt->cvt_nid);

        set_bit(pcm_idx, &spec->pcm_in_use);
        /* todo: setup spdif ctls assign */

        /* Initially set the converter's capabilities */
        hinfo->channels_min = per_cvt->channels_min;
        hinfo->channels_max = per_cvt->channels_max;
        hinfo->rates = per_cvt->rates;
        hinfo->formats = per_cvt->formats;
        hinfo->maxbps = per_cvt->maxbps;

        /* Store the updated parameters */
        runtime->hw.channels_min = hinfo->channels_min;
        runtime->hw.channels_max = hinfo->channels_max;
        runtime->hw.formats = hinfo->formats;
        runtime->hw.rates = hinfo->rates;

        snd_pcm_hw_constraint_step(substream->runtime, 0,
                                   SNDRV_PCM_HW_PARAM_CHANNELS, 2);
        return 0;
}

/*
 * HDA PCM callbacks
 */
static int hdmi_pcm_open(struct hda_pcm_stream *hinfo,
                         struct hda_codec *codec,
                         struct snd_pcm_substream *substream)
{
        struct hdmi_spec *spec = codec->spec;
        struct snd_pcm_runtime *runtime = substream->runtime;
        int pin_idx, cvt_idx, pcm_idx;
        struct hdmi_spec_per_pin *per_pin;
        struct hdmi_eld *eld;
        struct hdmi_spec_per_cvt *per_cvt = NULL;
        int err;

        /* Validate hinfo */
        pcm_idx = hinfo_to_pcm_index(codec, hinfo);
        if (pcm_idx < 0)
                return -EINVAL;

        guard(mutex)(&spec->pcm_lock);
        pin_idx = hinfo_to_pin_index(codec, hinfo);
        /* no pin is assigned to the PCM
         * PA need pcm open successfully when probe
         */
        if (pin_idx < 0)
                return hdmi_pcm_open_no_pin(hinfo, codec, substream);

        err = hdmi_choose_cvt(codec, pin_idx, &cvt_idx, false);
        if (err < 0)
                return err;

        per_cvt = get_cvt(spec, cvt_idx);
        /* Claim converter */
        per_cvt->assigned = true;

        set_bit(pcm_idx, &spec->pcm_in_use);
        per_pin = get_pin(spec, pin_idx);
        per_pin->cvt_nid = per_cvt->cvt_nid;
        hinfo->nid = per_cvt->cvt_nid;

        /* flip stripe flag for the assigned stream if supported */
        if (get_wcaps(codec, per_cvt->cvt_nid) & AC_WCAP_STRIPE)
                azx_stream(get_azx_dev(substream))->stripe = 1;

        snd_hda_set_dev_select(codec, per_pin->pin_nid, per_pin->dev_id);
        snd_hda_codec_write_cache(codec, per_pin->pin_nid, 0,
                            AC_VERB_SET_CONNECT_SEL,
                            per_pin->mux_idx);

        /* configure unused pins to choose other converters */
        pin_cvt_fixup(codec, per_pin, 0);

        snd_hda_spdif_ctls_assign(codec, pcm_idx, per_cvt->cvt_nid);

        /* Initially set the converter's capabilities */
        hinfo->channels_min = per_cvt->channels_min;
        hinfo->channels_max = per_cvt->channels_max;
        hinfo->rates = per_cvt->rates;
        hinfo->formats = per_cvt->formats;
        hinfo->maxbps = per_cvt->maxbps;

        eld = &per_pin->sink_eld;
        /* Restrict capabilities by ELD if this isn't disabled */
        if (!static_hdmi_pcm && eld->eld_valid) {
                snd_hdmi_eld_update_pcm_info(&eld->info, hinfo);
                if (hinfo->channels_min > hinfo->channels_max ||
                    !hinfo->rates || !hinfo->formats) {
                        per_cvt->assigned = false;
                        hinfo->nid = 0;
                        snd_hda_spdif_ctls_unassign(codec, pcm_idx);
                        return -ENODEV;
                }
        }

        /* Store the updated parameters */
        runtime->hw.channels_min = hinfo->channels_min;
        runtime->hw.channels_max = hinfo->channels_max;
        runtime->hw.formats = hinfo->formats;
        runtime->hw.rates = hinfo->rates;

        snd_pcm_hw_constraint_step(substream->runtime, 0,
                                   SNDRV_PCM_HW_PARAM_CHANNELS, 2);
        return 0;
}

/*
 * HDA/HDMI auto parsing
 */
static int hdmi_read_pin_conn(struct hda_codec *codec, int pin_idx)
{
        struct hdmi_spec *spec = codec->spec;
        struct hdmi_spec_per_pin *per_pin = get_pin(spec, pin_idx);
        hda_nid_t pin_nid = per_pin->pin_nid;
        int dev_id = per_pin->dev_id;
        int conns;

        if (!(get_wcaps(codec, pin_nid) & AC_WCAP_CONN_LIST)) {
                codec_warn(codec,
                           "HDMI: pin NID 0x%x wcaps %#x does not support connection list\n",
                           pin_nid, get_wcaps(codec, pin_nid));
                return -EINVAL;
        }

        snd_hda_set_dev_select(codec, pin_nid, dev_id);

        if (spec->intel_hsw_fixup) {
                conns = spec->num_cvts;
                memcpy(per_pin->mux_nids, spec->cvt_nids,
                       sizeof(hda_nid_t) * conns);
        } else {
                conns = snd_hda_get_raw_connections(codec, pin_nid,
                                                    per_pin->mux_nids,
                                                    HDA_MAX_CONNECTIONS);
        }

        /* all the device entries on the same pin have the same conn list */
        per_pin->num_mux_nids = conns;

        return 0;
}

static int hdmi_find_pcm_slot(struct hdmi_spec *spec,
                              struct hdmi_spec_per_pin *per_pin)
{
        int i;

        for (i = 0; i < spec->pcm_used; i++) {
                if (!test_bit(i, &spec->pcm_bitmap))
                        return i;
        }
        return -EBUSY;
}

static void hdmi_attach_hda_pcm(struct hdmi_spec *spec,
                                struct hdmi_spec_per_pin *per_pin)
{
        int idx;

        /* pcm already be attached to the pin */
        if (per_pin->pcm)
                return;
        /* try the previously used slot at first */
        idx = per_pin->prev_pcm_idx;
        if (idx >= 0) {
                if (!test_bit(idx, &spec->pcm_bitmap))
                        goto found;
                per_pin->prev_pcm_idx = -1; /* no longer valid, clear it */
        }
        idx = hdmi_find_pcm_slot(spec, per_pin);
        if (idx == -EBUSY)
                return;
 found:
        per_pin->pcm_idx = idx;
        per_pin->pcm = get_hdmi_pcm(spec, idx);
        set_bit(idx, &spec->pcm_bitmap);
}

static void hdmi_detach_hda_pcm(struct hdmi_spec *spec,
                                struct hdmi_spec_per_pin *per_pin)
{
        int idx;

        /* pcm already be detached from the pin */
        if (!per_pin->pcm)
                return;
        idx = per_pin->pcm_idx;
        per_pin->pcm_idx = -1;
        per_pin->prev_pcm_idx = idx; /* remember the previous index */
        per_pin->pcm = NULL;
        if (idx >= 0 && idx < spec->pcm_used)
                clear_bit(idx, &spec->pcm_bitmap);
}

static int hdmi_get_pin_cvt_mux(struct hdmi_spec *spec,
                struct hdmi_spec_per_pin *per_pin, hda_nid_t cvt_nid)
{
        int mux_idx;

        for (mux_idx = 0; mux_idx < per_pin->num_mux_nids; mux_idx++)
                if (per_pin->mux_nids[mux_idx] == cvt_nid)
                        break;
        return mux_idx;
}

static bool check_non_pcm_per_cvt(struct hda_codec *codec, hda_nid_t cvt_nid);

static void hdmi_pcm_setup_pin(struct hdmi_spec *spec,
                           struct hdmi_spec_per_pin *per_pin)
{
        struct hda_codec *codec = per_pin->codec;
        struct hda_pcm *pcm;
        struct hda_pcm_stream *hinfo;
        struct snd_pcm_substream *substream;
        int mux_idx;
        bool non_pcm;

        if (per_pin->pcm_idx < 0 || per_pin->pcm_idx >= spec->pcm_used)
                return;
        pcm = get_pcm_rec(spec, per_pin->pcm_idx);
        if (!pcm->pcm)
                return;
        if (!test_bit(per_pin->pcm_idx, &spec->pcm_in_use))
                return;

        /* hdmi audio only uses playback and one substream */
        hinfo = pcm->stream;
        substream = pcm->pcm->streams[0].substream;

        per_pin->cvt_nid = hinfo->nid;

        mux_idx = hdmi_get_pin_cvt_mux(spec, per_pin, hinfo->nid);
        if (mux_idx < per_pin->num_mux_nids) {
                snd_hda_set_dev_select(codec, per_pin->pin_nid,
                                   per_pin->dev_id);
                snd_hda_codec_write_cache(codec, per_pin->pin_nid, 0,
                                AC_VERB_SET_CONNECT_SEL,
                                mux_idx);
        }
        snd_hda_spdif_ctls_assign(codec, per_pin->pcm_idx, hinfo->nid);

        non_pcm = check_non_pcm_per_cvt(codec, hinfo->nid);
        if (substream->runtime)
                per_pin->channels = substream->runtime->channels;
        per_pin->setup = true;
        per_pin->mux_idx = mux_idx;

        snd_hda_hdmi_setup_audio_infoframe(codec, per_pin, non_pcm);
}

static void hdmi_pcm_reset_pin(struct hdmi_spec *spec,
                           struct hdmi_spec_per_pin *per_pin)
{
        if (per_pin->pcm_idx >= 0 && per_pin->pcm_idx < spec->pcm_used)
                snd_hda_spdif_ctls_unassign(per_pin->codec, per_pin->pcm_idx);

        per_pin->chmap_set = false;
        memset(per_pin->chmap, 0, sizeof(per_pin->chmap));

        per_pin->setup = false;
        per_pin->channels = 0;
}

static struct snd_jack *pin_idx_to_pcm_jack(struct hda_codec *codec,
                                            struct hdmi_spec_per_pin *per_pin)
{
        struct hdmi_spec *spec = codec->spec;

        if (per_pin->pcm_idx >= 0)
                return spec->pcm_rec[per_pin->pcm_idx].jack;
        else
                return NULL;
}

/* update per_pin ELD from the given new ELD;
 * setup info frame and notification accordingly
 * also notify ELD kctl and report jack status changes
 */
static void update_eld(struct hda_codec *codec,
                       struct hdmi_spec_per_pin *per_pin,
                       struct hdmi_eld *eld,
                       int repoll)
{
        struct hdmi_eld *pin_eld = &per_pin->sink_eld;
        struct hdmi_spec *spec = codec->spec;
        struct snd_jack *pcm_jack;
        bool old_eld_valid = pin_eld->eld_valid;
        bool eld_changed;
        int pcm_idx;

        if (eld->eld_valid) {
                if (eld->eld_size <= 0 ||
                    snd_parse_eld(hda_codec_dev(codec), &eld->info,
                                  eld->eld_buffer, eld->eld_size) < 0) {
                        eld->eld_valid = false;
                        if (repoll) {
                                schedule_delayed_work(&per_pin->work,
                                                      msecs_to_jiffies(300));
                                return;
                        }
                }
        }

        if (!eld->eld_valid || eld->eld_size <= 0 || eld->info.sad_count <= 0) {
                eld->eld_valid = false;
                eld->eld_size = 0;
        }

        /* for monitor disconnection, save pcm_idx firstly */
        pcm_idx = per_pin->pcm_idx;

        /*
         * pcm_idx >=0 before update_eld() means it is in monitor
         * disconnected event. Jack must be fetched before update_eld().
         */
        pcm_jack = pin_idx_to_pcm_jack(codec, per_pin);

        if (!spec->static_pcm_mapping) {
                if (eld->eld_valid) {
                        hdmi_attach_hda_pcm(spec, per_pin);
                        hdmi_pcm_setup_pin(spec, per_pin);
                } else {
                        hdmi_pcm_reset_pin(spec, per_pin);
                        hdmi_detach_hda_pcm(spec, per_pin);
                }
        }

        /* if pcm_idx == -1, it means this is in monitor connection event
         * we can get the correct pcm_idx now.
         */
        if (pcm_idx == -1)
                pcm_idx = per_pin->pcm_idx;
        if (!pcm_jack)
                pcm_jack = pin_idx_to_pcm_jack(codec, per_pin);

        if (eld->eld_valid)
                snd_show_eld(hda_codec_dev(codec), &eld->info);

        eld_changed = (pin_eld->eld_valid != eld->eld_valid);
        eld_changed |= (pin_eld->monitor_present != eld->monitor_present);
        if (!eld_changed && eld->eld_valid && pin_eld->eld_valid)
                if (pin_eld->eld_size != eld->eld_size ||
                    memcmp(pin_eld->eld_buffer, eld->eld_buffer,
                           eld->eld_size) != 0)
                        eld_changed = true;

        if (eld_changed) {
                pin_eld->monitor_present = eld->monitor_present;
                pin_eld->eld_valid = eld->eld_valid;
                pin_eld->eld_size = eld->eld_size;
                if (eld->eld_valid)
                        memcpy(pin_eld->eld_buffer, eld->eld_buffer,
                               eld->eld_size);
                pin_eld->info = eld->info;
        }

        /*
         * Re-setup pin and infoframe. This is needed e.g. when
         * - sink is first plugged-in
         * - transcoder can change during stream playback on Haswell
         *   and this can make HW reset converter selection on a pin.
         */
        if (eld->eld_valid && !old_eld_valid && per_pin->setup) {
                pin_cvt_fixup(codec, per_pin, 0);
                snd_hda_hdmi_setup_audio_infoframe(codec, per_pin, per_pin->non_pcm);
        }

        if (eld_changed && pcm_idx >= 0)
                snd_ctl_notify(codec->card,
                               SNDRV_CTL_EVENT_MASK_VALUE |
                               SNDRV_CTL_EVENT_MASK_INFO,
                               &get_hdmi_pcm(spec, pcm_idx)->eld_ctl->id);

        if (eld_changed && pcm_jack)
                snd_jack_report(pcm_jack,
                                (eld->monitor_present && eld->eld_valid) ?
                                SND_JACK_AVOUT : 0);
}

/* update ELD and jack state via HD-audio verbs */
static void hdmi_present_sense_via_verbs(struct hdmi_spec_per_pin *per_pin,
                                         int repoll)
{
        struct hda_codec *codec = per_pin->codec;
        struct hdmi_spec *spec = codec->spec;
        struct hdmi_eld *eld = &spec->temp_eld;
        struct device *dev = hda_codec_dev(codec);
        hda_nid_t pin_nid = per_pin->pin_nid;
        int dev_id = per_pin->dev_id;
        /*
         * Always execute a GetPinSense verb here, even when called from
         * hdmi_intrinsic_event; for some NVIDIA HW, the unsolicited
         * response's PD bit is not the real PD value, but indicates that
         * the real PD value changed. An older version of the HD-audio
         * specification worked this way. Hence, we just ignore the data in
         * the unsolicited response to avoid custom WARs.
         */
        int present;

#ifdef  CONFIG_PM
        if (dev->power.runtime_status == RPM_SUSPENDING)
                return;
#endif

        CLASS(snd_hda_power_pm, pm)(codec);
        if (pm.err < 0 && pm_runtime_suspended(dev))
                return;

        present = snd_hda_jack_pin_sense(codec, pin_nid, dev_id);

        guard(mutex)(&per_pin->lock);
        eld->monitor_present = !!(present & AC_PINSENSE_PRESENCE);
        if (eld->monitor_present)
                eld->eld_valid  = !!(present & AC_PINSENSE_ELDV);
        else
                eld->eld_valid = false;

        codec_dbg(codec,
                "HDMI status: Codec=%d NID=0x%x Presence_Detect=%d ELD_Valid=%d\n",
                codec->addr, pin_nid, eld->monitor_present, eld->eld_valid);

        if (eld->eld_valid) {
                if (spec->ops.pin_get_eld(codec, pin_nid, dev_id,
                                          eld->eld_buffer, &eld->eld_size) < 0)
                        eld->eld_valid = false;
        }

        update_eld(codec, per_pin, eld, repoll);
}

static void silent_stream_enable(struct hda_codec *codec,
                                 struct hdmi_spec_per_pin *per_pin)
{
        struct hdmi_spec *spec = codec->spec;
        struct hdmi_spec_per_cvt *per_cvt;
        int cvt_idx, pin_idx, err;

        /*
         * Power-up will call hdmi_present_sense, so the PM calls
         * have to be done without mutex held.
         */

        CLASS(snd_hda_power_pm, pm)(codec);
        if (pm.err < 0 && pm.err != -EACCES) {
                codec_err(codec,
                          "Failed to power up codec for silent stream enable ret=[%d]\n", pm.err);
                return;
        }

        guard(mutex)(&per_pin->lock);

        if (per_pin->setup) {
                codec_dbg(codec, "hdmi: PCM already open, no silent stream\n");
                return;
        }

        pin_idx = pin_id_to_pin_index(codec, per_pin->pin_nid, per_pin->dev_id);
        err = hdmi_choose_cvt(codec, pin_idx, &cvt_idx, true);
        if (err) {
                codec_err(codec, "hdmi: no free converter to enable silent mode\n");
                return;
        }

        per_cvt = get_cvt(spec, cvt_idx);
        per_cvt->silent_stream = true;
        per_pin->cvt_nid = per_cvt->cvt_nid;
        per_pin->silent_stream = true;

        codec_dbg(codec, "hdmi: enabling silent stream pin-NID=0x%x cvt-NID=0x%x\n",
                  per_pin->pin_nid, per_cvt->cvt_nid);

        snd_hda_set_dev_select(codec, per_pin->pin_nid, per_pin->dev_id);
        snd_hda_codec_write_cache(codec, per_pin->pin_nid, 0,
                                  AC_VERB_SET_CONNECT_SEL,
                                  per_pin->mux_idx);

        /* configure unused pins to choose other converters */
        pin_cvt_fixup(codec, per_pin, 0);

        spec->ops.silent_stream(codec, per_pin, true);
}

static void silent_stream_disable(struct hda_codec *codec,
                                  struct hdmi_spec_per_pin *per_pin)
{
        struct hdmi_spec *spec = codec->spec;
        struct hdmi_spec_per_cvt *per_cvt;
        int cvt_idx;

        CLASS(snd_hda_power_pm, pm)(codec);
        if (pm.err < 0 && pm.err != -EACCES) {
                codec_err(codec,
                          "Failed to power up codec for silent stream disable ret=[%d]\n",
                          pm.err);
                return;
        }

        guard(mutex)(&per_pin->lock);
        if (!per_pin->silent_stream)
                return;

        codec_dbg(codec, "HDMI: disable silent stream on pin-NID=0x%x cvt-NID=0x%x\n",
                  per_pin->pin_nid, per_pin->cvt_nid);

        cvt_idx = cvt_nid_to_cvt_index(codec, per_pin->cvt_nid);
        if (cvt_idx >= 0 && cvt_idx < spec->num_cvts) {
                per_cvt = get_cvt(spec, cvt_idx);
                per_cvt->silent_stream = false;
        }

        spec->ops.silent_stream(codec, per_pin, false);

        per_pin->cvt_nid = 0;
        per_pin->silent_stream = false;
}

/* update ELD and jack state via audio component */
static void sync_eld_via_acomp(struct hda_codec *codec,
                               struct hdmi_spec_per_pin *per_pin)
{
        struct hdmi_spec *spec = codec->spec;
        struct hdmi_eld *eld = &spec->temp_eld;
        bool monitor_prev, monitor_next;

        scoped_guard(mutex, &per_pin->lock) {
                eld->monitor_present = false;
                monitor_prev = per_pin->sink_eld.monitor_present;
                eld->eld_size = snd_hdac_acomp_get_eld(&codec->core, per_pin->pin_nid,
                                                       per_pin->dev_id, &eld->monitor_present,
                                                       eld->eld_buffer, ELD_MAX_SIZE);
                eld->eld_valid = (eld->eld_size > 0);
                update_eld(codec, per_pin, eld, 0);
                monitor_next = per_pin->sink_eld.monitor_present;
        }

        if (spec->silent_stream_type) {
                if (!monitor_prev && monitor_next)
                        silent_stream_enable(codec, per_pin);
                else if (monitor_prev && !monitor_next)
                        silent_stream_disable(codec, per_pin);
        }
}

static void hdmi_present_sense(struct hdmi_spec_per_pin *per_pin, int repoll)
{
        struct hda_codec *codec = per_pin->codec;

        if (!codec_has_acomp(codec))
                hdmi_present_sense_via_verbs(per_pin, repoll);
        else
                sync_eld_via_acomp(codec, per_pin);
}

static void hdmi_repoll_eld(struct work_struct *work)
{
        struct hdmi_spec_per_pin *per_pin =
        container_of(to_delayed_work(work), struct hdmi_spec_per_pin, work);
        struct hda_codec *codec = per_pin->codec;
        struct hdmi_spec *spec = codec->spec;
        struct hda_jack_tbl *jack;

        jack = snd_hda_jack_tbl_get_mst(codec, per_pin->pin_nid,
                                        per_pin->dev_id);
        if (jack)
                jack->jack_dirty = 1;

        if (per_pin->repoll_count++ > 6)
                per_pin->repoll_count = 0;

        guard(mutex)(&spec->pcm_lock);
        hdmi_present_sense(per_pin, per_pin->repoll_count);
}

static int hdmi_add_pin(struct hda_codec *codec, hda_nid_t pin_nid)
{
        struct hdmi_spec *spec = codec->spec;
        unsigned int caps, config;
        int pin_idx;
        struct hdmi_spec_per_pin *per_pin;
        int err;
        int dev_num, i;

        caps = snd_hda_query_pin_caps(codec, pin_nid);
        if (!(caps & (AC_PINCAP_HDMI | AC_PINCAP_DP)))
                return 0;

        /*
         * For DP MST audio, Configuration Default is the same for
         * all device entries on the same pin
         */
        config = snd_hda_codec_get_pincfg(codec, pin_nid);
        if (get_defcfg_connect(config) == AC_JACK_PORT_NONE &&
            !spec->force_connect)
                return 0;

        /*
         * To simplify the implementation, malloc all
         * the virtual pins in the initialization statically
         */
        if (spec->intel_hsw_fixup) {
                /*
                 * On Intel platforms, device entries count returned
                 * by AC_PAR_DEVLIST_LEN is dynamic, and depends on
                 * the type of receiver that is connected. Allocate pin
                 * structures based on worst case.
                 */
                dev_num = spec->dev_num;
        } else if (codec->dp_mst) {
                dev_num = snd_hda_get_num_devices(codec, pin_nid) + 1;
                /*
                 * spec->dev_num is the maxinum number of device entries
                 * among all the pins
                 */
                spec->dev_num = (spec->dev_num > dev_num) ?
                        spec->dev_num : dev_num;
        } else {
                /*
                 * If the platform doesn't support DP MST,
                 * manually set dev_num to 1. This means
                 * the pin has only one device entry.
                 */
                dev_num = 1;
                spec->dev_num = 1;
        }

        for (i = 0; i < dev_num; i++) {
                pin_idx = spec->num_pins;
                per_pin = snd_array_new(&spec->pins);

                if (!per_pin)
                        return -ENOMEM;

                per_pin->pcm = NULL;
                per_pin->pcm_idx = -1;
                per_pin->prev_pcm_idx = -1;
                per_pin->pin_nid = pin_nid;
                per_pin->pin_nid_idx = spec->num_nids;
                per_pin->dev_id = i;
                per_pin->non_pcm = false;
                snd_hda_set_dev_select(codec, pin_nid, i);
                err = hdmi_read_pin_conn(codec, pin_idx);
                if (err < 0)
                        return err;
                if (!is_jack_detectable(codec, pin_nid))
                        codec_warn(codec, "HDMI: pin NID 0x%x - jack not detectable\n", pin_nid);
                spec->num_pins++;
        }
        spec->num_nids++;

        return 0;
}

static int hdmi_add_cvt(struct hda_codec *codec, hda_nid_t cvt_nid)
{
        struct hdmi_spec *spec = codec->spec;
        struct hdmi_spec_per_cvt *per_cvt;
        unsigned int chans;
        int err;

        chans = get_wcaps(codec, cvt_nid);
        chans = get_wcaps_channels(chans);

        per_cvt = snd_array_new(&spec->cvts);
        if (!per_cvt)
                return -ENOMEM;

        per_cvt->cvt_nid = cvt_nid;
        per_cvt->channels_min = 2;
        if (chans <= 16) {
                per_cvt->channels_max = chans;
                if (chans > spec->chmap.channels_max)
                        spec->chmap.channels_max = chans;
        }

        err = snd_hda_query_supported_pcm(codec, cvt_nid,
                                          &per_cvt->rates,
                                          &per_cvt->formats,
                                          NULL,
                                          &per_cvt->maxbps);
        if (err < 0)
                return err;

        if (spec->num_cvts < ARRAY_SIZE(spec->cvt_nids))
                spec->cvt_nids[spec->num_cvts] = cvt_nid;
        spec->num_cvts++;

        return 0;
}

static const struct snd_pci_quirk force_connect_list[] = {
        SND_PCI_QUIRK(0x103c, 0x83e2, "HP EliteDesk 800 G4", 1),
        SND_PCI_QUIRK(0x103c, 0x83ef, "HP MP9 G4 Retail System AMS", 1),
        SND_PCI_QUIRK(0x103c, 0x845a, "HP EliteDesk 800 G4 DM 65W", 1),
        SND_PCI_QUIRK(0x103c, 0x83f3, "HP ProDesk 400", 1),
        SND_PCI_QUIRK(0x103c, 0x870f, "HP", 1),
        SND_PCI_QUIRK(0x103c, 0x871a, "HP", 1),
        SND_PCI_QUIRK(0x103c, 0x8711, "HP", 1),
        SND_PCI_QUIRK(0x103c, 0x8715, "HP", 1),
        SND_PCI_QUIRK(0x1043, 0x86ae, "ASUS", 1),  /* Z170 PRO */
        SND_PCI_QUIRK(0x1043, 0x86c7, "ASUS", 1),  /* Z170M PLUS */
        SND_PCI_QUIRK(0x1462, 0xec94, "MS-7C94", 1),
        SND_PCI_QUIRK(0x1558, 0x14a1, "TUXEDO InfinityBook S 14 Gen6", 1),
        SND_PCI_QUIRK(0x8086, 0x2060, "Intel NUC5CPYB", 1),
        SND_PCI_QUIRK(0x8086, 0x2081, "Intel NUC 10", 1),
        {}
};

int snd_hda_hdmi_parse_codec(struct hda_codec *codec)
{
        struct hdmi_spec *spec = codec->spec;
        hda_nid_t start_nid;
        unsigned int caps;
        int i, nodes;
        const struct snd_pci_quirk *q;

        nodes = snd_hda_get_sub_nodes(codec, codec->core.afg, &start_nid);
        if (!start_nid || nodes < 0) {
                codec_warn(codec, "HDMI: failed to get afg sub nodes\n");
                return -EINVAL;
        }

        if (enable_all_pins)
                spec->force_connect = true;

        q = snd_pci_quirk_lookup(codec->bus->pci, force_connect_list);

        if (q && q->value)
                spec->force_connect = true;

        /*
         * hdmi_add_pin() assumes total amount of converters to
         * be known, so first discover all converters
         */
        for (i = 0; i < nodes; i++) {
                hda_nid_t nid = start_nid + i;

                caps = get_wcaps(codec, nid);

                if (!(caps & AC_WCAP_DIGITAL))
                        continue;

                if (get_wcaps_type(caps) == AC_WID_AUD_OUT)
                        hdmi_add_cvt(codec, nid);
        }

        /* discover audio pins */
        for (i = 0; i < nodes; i++) {
                hda_nid_t nid = start_nid + i;

                caps = get_wcaps(codec, nid);

                if (!(caps & AC_WCAP_DIGITAL))
                        continue;

                if (get_wcaps_type(caps) == AC_WID_PIN)
                        hdmi_add_pin(codec, nid);
        }

        return 0;
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_parse_codec, "SND_HDA_CODEC_HDMI");

/*
 */
static bool check_non_pcm_per_cvt(struct hda_codec *codec, hda_nid_t cvt_nid)
{
        struct hda_spdif_out *spdif;

        guard(mutex)(&codec->spdif_mutex);
        spdif = snd_hda_spdif_out_of_nid(codec, cvt_nid);
        /* Add sanity check to pass klockwork check.
         * This should never happen.
         */
        if (WARN_ON(spdif == NULL))
                return true;
        return !!(spdif->status & IEC958_AES0_NONAUDIO);
}

/*
 * HDMI callbacks
 */

int snd_hda_hdmi_generic_pcm_prepare(struct hda_pcm_stream *hinfo,
                                     struct hda_codec *codec,
                                     unsigned int stream_tag,
                                     unsigned int format,
                                     struct snd_pcm_substream *substream)
{
        hda_nid_t cvt_nid = hinfo->nid;
        struct hdmi_spec *spec = codec->spec;
        int pin_idx;
        struct hdmi_spec_per_pin *per_pin;
        struct snd_pcm_runtime *runtime = substream->runtime;
        bool non_pcm;
        int pinctl, stripe;

        guard(mutex)(&spec->pcm_lock);
        pin_idx = hinfo_to_pin_index(codec, hinfo);
        if (pin_idx < 0) {
                /* when pcm is not bound to a pin skip pin setup and return 0
                 * to make audio playback be ongoing
                 */
                pin_cvt_fixup(codec, NULL, cvt_nid);
                snd_hda_codec_setup_stream(codec, cvt_nid,
                                        stream_tag, 0, format);
                return 0;
        }

        per_pin = get_pin(spec, pin_idx);

        /* Verify pin:cvt selections to avoid silent audio after S3.
         * After S3, the audio driver restores pin:cvt selections
         * but this can happen before gfx is ready and such selection
         * is overlooked by HW. Thus multiple pins can share a same
         * default convertor and mute control will affect each other,
         * which can cause a resumed audio playback become silent
         * after S3.
         */
        pin_cvt_fixup(codec, per_pin, 0);

        /* Call sync_audio_rate to set the N/CTS/M manually if necessary */
        /* Todo: add DP1.2 MST audio support later */
        if (codec_has_acomp(codec))
                snd_hdac_sync_audio_rate(&codec->core, per_pin->pin_nid,
                                         per_pin->dev_id, runtime->rate);

        non_pcm = check_non_pcm_per_cvt(codec, cvt_nid);
        scoped_guard(mutex, &per_pin->lock) {
                per_pin->channels = substream->runtime->channels;
                per_pin->setup = true;

                if (get_wcaps(codec, cvt_nid) & AC_WCAP_STRIPE) {
                        stripe = snd_hdac_get_stream_stripe_ctl(&codec->bus->core,
                                                                substream);
                        snd_hda_codec_write(codec, cvt_nid, 0,
                                            AC_VERB_SET_STRIPE_CONTROL,
                                            stripe);
                }

                snd_hda_hdmi_setup_audio_infoframe(codec, per_pin, non_pcm);
        }
        if (spec->dyn_pin_out) {
                snd_hda_set_dev_select(codec, per_pin->pin_nid,
                                       per_pin->dev_id);
                pinctl = snd_hda_codec_read(codec, per_pin->pin_nid, 0,
                                            AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
                snd_hda_codec_write(codec, per_pin->pin_nid, 0,
                                    AC_VERB_SET_PIN_WIDGET_CONTROL,
                                    pinctl | PIN_OUT);
        }

        /* snd_hda_set_dev_select() has been called before */
        return spec->ops.setup_stream(codec, cvt_nid, per_pin->pin_nid,
                                      per_pin->dev_id, stream_tag, format);
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_generic_pcm_prepare, "SND_HDA_CODEC_HDMI");

int snd_hda_hdmi_generic_pcm_cleanup(struct hda_pcm_stream *hinfo,
                                     struct hda_codec *codec,
                                     struct snd_pcm_substream *substream)
{
        snd_hda_codec_cleanup_stream(codec, hinfo->nid);
        return 0;
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_generic_pcm_cleanup, "SND_HDA_CODEC_HDMI");

static int hdmi_pcm_close(struct hda_pcm_stream *hinfo,
                          struct hda_codec *codec,
                          struct snd_pcm_substream *substream)
{
        struct hdmi_spec *spec = codec->spec;
        int cvt_idx, pin_idx, pcm_idx;
        struct hdmi_spec_per_cvt *per_cvt;
        struct hdmi_spec_per_pin *per_pin;
        int pinctl;

        guard(mutex)(&spec->pcm_lock);
        if (hinfo->nid) {
                pcm_idx = hinfo_to_pcm_index(codec, hinfo);
                if (snd_BUG_ON(pcm_idx < 0))
                        return -EINVAL;
                cvt_idx = cvt_nid_to_cvt_index(codec, hinfo->nid);
                if (snd_BUG_ON(cvt_idx < 0))
                        return -EINVAL;
                per_cvt = get_cvt(spec, cvt_idx);
                per_cvt->assigned = false;
                hinfo->nid = 0;

                azx_stream(get_azx_dev(substream))->stripe = 0;

                snd_hda_spdif_ctls_unassign(codec, pcm_idx);
                clear_bit(pcm_idx, &spec->pcm_in_use);
                pin_idx = hinfo_to_pin_index(codec, hinfo);
                /*
                 * In such a case, return 0 to match the behavior in
                 * hdmi_pcm_open()
                 */
                if (pin_idx < 0)
                        return 0;

                per_pin = get_pin(spec, pin_idx);

                if (spec->dyn_pin_out) {
                        snd_hda_set_dev_select(codec, per_pin->pin_nid,
                                               per_pin->dev_id);
                        pinctl = snd_hda_codec_read(codec, per_pin->pin_nid, 0,
                                        AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
                        snd_hda_codec_write(codec, per_pin->pin_nid, 0,
                                            AC_VERB_SET_PIN_WIDGET_CONTROL,
                                            pinctl & ~PIN_OUT);
                }

                guard(mutex)(&per_pin->lock);
                per_pin->chmap_set = false;
                memset(per_pin->chmap, 0, sizeof(per_pin->chmap));

                per_pin->setup = false;
                per_pin->channels = 0;
        }

        return 0;
}

static const struct hda_pcm_ops generic_ops = {
        .open = hdmi_pcm_open,
        .close = hdmi_pcm_close,
        .prepare = snd_hda_hdmi_generic_pcm_prepare,
        .cleanup = snd_hda_hdmi_generic_pcm_cleanup,
};

static int hdmi_get_spk_alloc(struct hdac_device *hdac, int pcm_idx)
{
        struct hda_codec *codec = hdac_to_hda_codec(hdac);
        struct hdmi_spec *spec = codec->spec;
        struct hdmi_spec_per_pin *per_pin = pcm_idx_to_pin(spec, pcm_idx);

        if (!per_pin)
                return 0;

        return per_pin->sink_eld.info.spk_alloc;
}

static void hdmi_get_chmap(struct hdac_device *hdac, int pcm_idx,
                                        unsigned char *chmap)
{
        struct hda_codec *codec = hdac_to_hda_codec(hdac);
        struct hdmi_spec *spec = codec->spec;
        struct hdmi_spec_per_pin *per_pin = pcm_idx_to_pin(spec, pcm_idx);

        /* chmap is already set to 0 in caller */
        if (!per_pin)
                return;

        memcpy(chmap, per_pin->chmap, ARRAY_SIZE(per_pin->chmap));
}

static void hdmi_set_chmap(struct hdac_device *hdac, int pcm_idx,
                                unsigned char *chmap, int prepared)
{
        struct hda_codec *codec = hdac_to_hda_codec(hdac);
        struct hdmi_spec *spec = codec->spec;
        struct hdmi_spec_per_pin *per_pin = pcm_idx_to_pin(spec, pcm_idx);

        if (!per_pin)
                return;
        guard(mutex)(&per_pin->lock);
        per_pin->chmap_set = true;
        memcpy(per_pin->chmap, chmap, ARRAY_SIZE(per_pin->chmap));
        if (prepared)
                snd_hda_hdmi_setup_audio_infoframe(codec, per_pin, per_pin->non_pcm);
}

static bool is_hdmi_pcm_attached(struct hdac_device *hdac, int pcm_idx)
{
        struct hda_codec *codec = hdac_to_hda_codec(hdac);
        struct hdmi_spec *spec = codec->spec;
        struct hdmi_spec_per_pin *per_pin = pcm_idx_to_pin(spec, pcm_idx);

        return per_pin ? true:false;
}

int snd_hda_hdmi_generic_build_pcms(struct hda_codec *codec)
{
        struct hdmi_spec *spec = codec->spec;
        int idx, pcm_num;

        /* limit the PCM devices to the codec converters or available PINs */
        pcm_num = min(spec->num_cvts, spec->num_pins);
        codec_dbg(codec, "hdmi: pcm_num set to %d\n", pcm_num);

        for (idx = 0; idx < pcm_num; idx++) {
                struct hdmi_spec_per_cvt *per_cvt;
                struct hda_pcm *info;
                struct hda_pcm_stream *pstr;

                info = snd_hda_codec_pcm_new(codec, "HDMI %d", idx);
                if (!info)
                        return -ENOMEM;

                spec->pcm_rec[idx].pcm = info;
                spec->pcm_used++;
                info->pcm_type = HDA_PCM_TYPE_HDMI;
                info->own_chmap = true;

                pstr = &info->stream[SNDRV_PCM_STREAM_PLAYBACK];
                pstr->substreams = 1;
                pstr->ops = generic_ops;

                per_cvt = get_cvt(spec, 0);
                pstr->channels_min = per_cvt->channels_min;
                pstr->channels_max = per_cvt->channels_max;

                /* pcm number is less than pcm_rec array size */
                if (spec->pcm_used >= ARRAY_SIZE(spec->pcm_rec))
                        break;
                /* other pstr fields are set in open */
        }

        return 0;
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_generic_build_pcms, "SND_HDA_CODEC_HDMI");

static void free_hdmi_jack_priv(struct snd_jack *jack)
{
        struct hdmi_pcm *pcm = jack->private_data;

        pcm->jack = NULL;
}

static int generic_hdmi_build_jack(struct hda_codec *codec, int pcm_idx)
{
        char hdmi_str[32] = "HDMI/DP";
        struct hdmi_spec *spec = codec->spec;
        struct snd_jack *jack;
        int pcmdev = get_pcm_rec(spec, pcm_idx)->device;
        int err;

        if (pcmdev > 0)
                sprintf(hdmi_str + strlen(hdmi_str), ",pcm=%d", pcmdev);

        err = snd_jack_new(codec->card, hdmi_str, SND_JACK_AVOUT, &jack,
                           true, false);
        if (err < 0)
                return err;

        spec->pcm_rec[pcm_idx].jack = jack;
        jack->private_data = &spec->pcm_rec[pcm_idx];
        jack->private_free = free_hdmi_jack_priv;
        return 0;
}

int snd_hda_hdmi_generic_build_controls(struct hda_codec *codec)
{
        struct hdmi_spec *spec = codec->spec;
        int dev, err;
        int pin_idx, pcm_idx;

        for (pcm_idx = 0; pcm_idx < spec->pcm_used; pcm_idx++) {
                if (!get_pcm_rec(spec, pcm_idx)->pcm) {
                        /* no PCM: mark this for skipping permanently */
                        set_bit(pcm_idx, &spec->pcm_bitmap);
                        continue;
                }

                err = generic_hdmi_build_jack(codec, pcm_idx);
                if (err < 0)
                        return err;

                /* create the spdif for each pcm
                 * pin will be bound when monitor is connected
                 */
                err = snd_hda_create_dig_out_ctls(codec,
                                          0, spec->cvt_nids[0],
                                          HDA_PCM_TYPE_HDMI);
                if (err < 0)
                        return err;
                snd_hda_spdif_ctls_unassign(codec, pcm_idx);

                dev = get_pcm_rec(spec, pcm_idx)->device;
                if (dev != SNDRV_PCM_INVALID_DEVICE) {
                        /* add control for ELD Bytes */
                        err = hdmi_create_eld_ctl(codec, pcm_idx, dev);
                        if (err < 0)
                                return err;
                }
        }

        for (pin_idx = 0; pin_idx < spec->num_pins; pin_idx++) {
                struct hdmi_spec_per_pin *per_pin = get_pin(spec, pin_idx);
                struct hdmi_eld *pin_eld = &per_pin->sink_eld;

                if (spec->static_pcm_mapping) {
                        hdmi_attach_hda_pcm(spec, per_pin);
                        hdmi_pcm_setup_pin(spec, per_pin);
                }

                pin_eld->eld_valid = false;
                hdmi_present_sense(per_pin, 0);
        }

        /* add channel maps */
        for (pcm_idx = 0; pcm_idx < spec->pcm_used; pcm_idx++) {
                struct hda_pcm *pcm;

                pcm = get_pcm_rec(spec, pcm_idx);
                if (!pcm || !pcm->pcm)
                        break;
                err = snd_hdac_add_chmap_ctls(pcm->pcm, pcm_idx, &spec->chmap);
                if (err < 0)
                        return err;
        }

        return 0;
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_generic_build_controls, "SND_HDA_CODEC_HDMI");

int snd_hda_hdmi_generic_init_per_pins(struct hda_codec *codec)
{
        struct hdmi_spec *spec = codec->spec;
        int pin_idx;

        for (pin_idx = 0; pin_idx < spec->num_pins; pin_idx++) {
                struct hdmi_spec_per_pin *per_pin = get_pin(spec, pin_idx);

                per_pin->codec = codec;
                mutex_init(&per_pin->lock);
                INIT_DELAYED_WORK(&per_pin->work, hdmi_repoll_eld);
                eld_proc_new(per_pin, pin_idx);
        }
        return 0;
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_generic_init_per_pins, "SND_HDA_CODEC_HDMI");

int snd_hda_hdmi_generic_init(struct hda_codec *codec)
{
        struct hdmi_spec *spec = codec->spec;
        int pin_idx;

        guard(mutex)(&spec->bind_lock);
        for (pin_idx = 0; pin_idx < spec->num_pins; pin_idx++) {
                struct hdmi_spec_per_pin *per_pin = get_pin(spec, pin_idx);
                hda_nid_t pin_nid = per_pin->pin_nid;
                int dev_id = per_pin->dev_id;

                snd_hda_set_dev_select(codec, pin_nid, dev_id);
                hdmi_init_pin(codec, pin_nid);
                if (codec_has_acomp(codec))
                        continue;
                snd_hda_jack_detect_enable_callback_mst(codec, pin_nid, dev_id,
                                                        jack_callback);
        }
        return 0;
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_generic_init, "SND_HDA_CODEC_HDMI");

static void hdmi_array_init(struct hdmi_spec *spec, int nums)
{
        snd_array_init(&spec->pins, sizeof(struct hdmi_spec_per_pin), nums);
        snd_array_init(&spec->cvts, sizeof(struct hdmi_spec_per_cvt), nums);
}

static void hdmi_array_free(struct hdmi_spec *spec)
{
        snd_array_free(&spec->pins);
        snd_array_free(&spec->cvts);
}

void snd_hda_hdmi_generic_spec_free(struct hda_codec *codec)
{
        struct hdmi_spec *spec = codec->spec;

        if (spec) {
                hdmi_array_free(spec);
                kfree(spec);
                codec->spec = NULL;
        }
        codec->dp_mst = false;
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_generic_spec_free, "SND_HDA_CODEC_HDMI");

void snd_hda_hdmi_generic_remove(struct hda_codec *codec)
{
        struct hdmi_spec *spec = codec->spec;
        int pin_idx, pcm_idx;

        if (spec->acomp_registered) {
                snd_hdac_acomp_exit(&codec->bus->core);
        } else if (codec_has_acomp(codec)) {
                snd_hdac_acomp_register_notifier(&codec->bus->core, NULL);
        }
        codec->relaxed_resume = 0;

        for (pin_idx = 0; pin_idx < spec->num_pins; pin_idx++) {
                struct hdmi_spec_per_pin *per_pin = get_pin(spec, pin_idx);
                cancel_delayed_work_sync(&per_pin->work);
                eld_proc_free(per_pin);
        }

        for (pcm_idx = 0; pcm_idx < spec->pcm_used; pcm_idx++) {
                if (spec->pcm_rec[pcm_idx].jack == NULL)
                        continue;
                snd_device_free(codec->card, spec->pcm_rec[pcm_idx].jack);
        }

        snd_hda_hdmi_generic_spec_free(codec);
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_generic_remove, "SND_HDA_CODEC_HDMI");

int snd_hda_hdmi_generic_suspend(struct hda_codec *codec)
{
        struct hdmi_spec *spec = codec->spec;
        int pin_idx;

        for (pin_idx = 0; pin_idx < spec->num_pins; pin_idx++) {
                struct hdmi_spec_per_pin *per_pin = get_pin(spec, pin_idx);
                cancel_delayed_work_sync(&per_pin->work);
        }
        return 0;
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_generic_suspend, "SND_HDA_CODEC_HDMI");

int snd_hda_hdmi_generic_resume(struct hda_codec *codec)
{
        struct hdmi_spec *spec = codec->spec;
        int pin_idx;

        snd_hda_codec_init(codec);
        snd_hda_regmap_sync(codec);

        for (pin_idx = 0; pin_idx < spec->num_pins; pin_idx++) {
                struct hdmi_spec_per_pin *per_pin = get_pin(spec, pin_idx);
                hdmi_present_sense(per_pin, 1);
        }
        return 0;
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_generic_resume, "SND_HDA_CODEC_HDMI");

static const struct hdmi_ops generic_standard_hdmi_ops = {
        .pin_get_eld                            = hdmi_pin_get_eld,
        .pin_setup_infoframe                    = hdmi_pin_setup_infoframe,
        .pin_hbr_setup                          = hdmi_pin_hbr_setup,
        .setup_stream                           = snd_hda_hdmi_setup_stream,
};

/* allocate codec->spec and assign/initialize generic parser ops */
int snd_hda_hdmi_generic_alloc(struct hda_codec *codec)
{
        struct hdmi_spec *spec;

        spec = kzalloc_obj(*spec);
        if (!spec)
                return -ENOMEM;

        spec->codec = codec;
        spec->ops = generic_standard_hdmi_ops;
        spec->dev_num = 1;      /* initialize to 1 */
        mutex_init(&spec->pcm_lock);
        mutex_init(&spec->bind_lock);
        snd_hdac_register_chmap_ops(&codec->core, &spec->chmap);

        spec->chmap.ops.get_chmap = hdmi_get_chmap;
        spec->chmap.ops.set_chmap = hdmi_set_chmap;
        spec->chmap.ops.is_pcm_attached = is_hdmi_pcm_attached;
        spec->chmap.ops.get_spk_alloc = hdmi_get_spk_alloc;

        codec->spec = spec;
        hdmi_array_init(spec, 4);

        return 0;
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_generic_alloc, "SND_HDA_CODEC_HDMI");

/* generic HDMI parser */
int snd_hda_hdmi_generic_probe(struct hda_codec *codec)
{
        int err;

        err = snd_hda_hdmi_generic_alloc(codec);
        if (err < 0)
                return err;

        err = snd_hda_hdmi_parse_codec(codec);
        if (err < 0) {
                snd_hda_hdmi_generic_spec_free(codec);
                return err;
        }

        snd_hda_hdmi_generic_init_per_pins(codec);
        return 0;
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_generic_probe, "SND_HDA_CODEC_HDMI");

/*
 * generic audio component binding
 */

/* turn on / off the unsol event jack detection dynamically */
static void reprogram_jack_detect(struct hda_codec *codec, hda_nid_t nid,
                                  int dev_id, bool use_acomp)
{
        struct hda_jack_tbl *tbl;

        tbl = snd_hda_jack_tbl_get_mst(codec, nid, dev_id);
        if (tbl) {
                /* clear unsol even if component notifier is used, or re-enable
                 * if notifier is cleared
                 */
                unsigned int val = use_acomp ? 0 : (AC_USRSP_EN | tbl->tag);
                snd_hda_codec_write_cache(codec, nid, 0,
                                          AC_VERB_SET_UNSOLICITED_ENABLE, val);
        }
}

/* set up / clear component notifier dynamically */
static void generic_acomp_notifier_set(struct drm_audio_component *acomp,
                                       bool use_acomp)
{
        struct hdmi_spec *spec;
        int i;

        spec = container_of(acomp->audio_ops, struct hdmi_spec, drm_audio_ops);
        guard(mutex)(&spec->bind_lock);
        spec->use_acomp_notifier = use_acomp;
        spec->codec->relaxed_resume = use_acomp;
        spec->codec->bus->keep_power = 0;
        /* reprogram each jack detection logic depending on the notifier */
        for (i = 0; i < spec->num_pins; i++)
                reprogram_jack_detect(spec->codec,
                                      get_pin(spec, i)->pin_nid,
                                      get_pin(spec, i)->dev_id,
                                      use_acomp);
}

/* enable / disable the notifier via master bind / unbind */
int snd_hda_hdmi_acomp_master_bind(struct device *dev,
                                   struct drm_audio_component *acomp)
{
        generic_acomp_notifier_set(acomp, true);
        return 0;
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_acomp_master_bind, "SND_HDA_CODEC_HDMI");

void snd_hda_hdmi_acomp_master_unbind(struct device *dev,
                                      struct drm_audio_component *acomp)
{
        generic_acomp_notifier_set(acomp, false);
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_acomp_master_unbind, "SND_HDA_CODEC_HDMI");

/* check whether both HD-audio and DRM PCI devices belong to the same bus */
static int match_bound_vga(struct device *dev, int subtype, void *data)
{
        struct hdac_bus *bus = data;
        struct pci_dev *pci, *master;

        if (!dev_is_pci(dev) || !dev_is_pci(bus->dev))
                return 0;
        master = to_pci_dev(bus->dev);
        pci = to_pci_dev(dev);
        return master->bus == pci->bus;
}

/* audio component notifier for AMD/Nvidia HDMI codecs */
void snd_hda_hdmi_acomp_pin_eld_notify(void *audio_ptr, int port, int dev_id)
{
        struct hda_codec *codec = audio_ptr;
        struct hdmi_spec *spec = codec->spec;
        hda_nid_t pin_nid = spec->port2pin(codec, port);

        if (!pin_nid)
                return;
        if (get_wcaps_type(get_wcaps(codec, pin_nid)) != AC_WID_PIN)
                return;
        /* skip notification during system suspend (but not in runtime PM);
         * the state will be updated at resume
         */
        if (codec->core.dev.power.power_state.event == PM_EVENT_SUSPEND)
                return;

        snd_hda_hdmi_check_presence_and_report(codec, pin_nid, dev_id);
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_acomp_pin_eld_notify, "SND_HDA_CODEC_HDMI");

/* set up the private drm_audio_ops from the template */
void snd_hda_hdmi_setup_drm_audio_ops(struct hda_codec *codec,
                                      const struct drm_audio_component_audio_ops *ops)
{
        struct hdmi_spec *spec = codec->spec;

        spec->drm_audio_ops.audio_ptr = codec;
        /* intel_audio_codec_enable() or intel_audio_codec_disable()
         * will call pin_eld_notify with using audio_ptr pointer
         * We need make sure audio_ptr is really setup
         */
        wmb();
        spec->drm_audio_ops.pin2port = ops->pin2port;
        spec->drm_audio_ops.pin_eld_notify = ops->pin_eld_notify;
        spec->drm_audio_ops.master_bind = ops->master_bind;
        spec->drm_audio_ops.master_unbind = ops->master_unbind;
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_setup_drm_audio_ops, "SND_HDA_CODEC_HDMI");

/* initialize the generic HDMI audio component */
void snd_hda_hdmi_acomp_init(struct hda_codec *codec,
                             const struct drm_audio_component_audio_ops *ops,
                             int (*port2pin)(struct hda_codec *, int))
{
        struct hdmi_spec *spec = codec->spec;

        if (!enable_acomp) {
                codec_info(codec, "audio component disabled by module option\n");
                return;
        }

        spec->port2pin = port2pin;
        snd_hda_hdmi_setup_drm_audio_ops(codec, ops);
        if (!snd_hdac_acomp_init(&codec->bus->core, &spec->drm_audio_ops,
                                 match_bound_vga, 0)) {
                spec->acomp_registered = true;
        }
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_acomp_init, "SND_HDA_CODEC_HDMI");

/*
 */

enum {
        MODEL_GENERIC,
        MODEL_GF,
};

static int generichdmi_probe(struct hda_codec *codec,
                             const struct hda_device_id *id)
{
        int err;

        err = snd_hda_hdmi_generic_probe(codec);
        if (err < 0)
                return err;
        /*
         * Glenfly GPUs have two codecs, stream switches from one codec to
         * another, need to do actual clean-ups in codec_cleanup_stream
         */
        if (id->driver_data == MODEL_GF)
                codec->no_sticky_stream = 1;

        return 0;
}

static const struct hda_codec_ops generichdmi_codec_ops = {
        .probe = generichdmi_probe,
        .remove = snd_hda_hdmi_generic_remove,
        .init = snd_hda_hdmi_generic_init,
        .build_pcms = snd_hda_hdmi_generic_build_pcms,
        .build_controls = snd_hda_hdmi_generic_build_controls,
        .unsol_event = snd_hda_hdmi_generic_unsol_event,
        .suspend = snd_hda_hdmi_generic_suspend,
        .resume  = snd_hda_hdmi_generic_resume,
};

/*
 */
static const struct hda_device_id snd_hda_id_generichdmi[] = {
        HDA_CODEC_ID_MODEL(0x00147a47, "Loongson HDMI",         MODEL_GENERIC),
        HDA_CODEC_ID_MODEL(0x10951390, "SiI1390 HDMI",          MODEL_GENERIC),
        HDA_CODEC_ID_MODEL(0x10951392, "SiI1392 HDMI",          MODEL_GENERIC),
        HDA_CODEC_ID_MODEL(0x11069f84, "VX11 HDMI/DP",          MODEL_GENERIC),
        HDA_CODEC_ID_MODEL(0x11069f85, "VX11 HDMI/DP",          MODEL_GENERIC),
        HDA_CODEC_ID_MODEL(0x17e80047, "Chrontel HDMI",         MODEL_GENERIC),
        HDA_CODEC_ID_MODEL(0x1d179f86, "ZX-100S HDMI/DP",       MODEL_GF),
        HDA_CODEC_ID_MODEL(0x1d179f87, "ZX-100S HDMI/DP",       MODEL_GF),
        HDA_CODEC_ID_MODEL(0x1d179f88, "KX-5000 HDMI/DP",       MODEL_GF),
        HDA_CODEC_ID_MODEL(0x1d179f89, "KX-5000 HDMI/DP",       MODEL_GF),
        HDA_CODEC_ID_MODEL(0x1d179f8a, "KX-6000 HDMI/DP",       MODEL_GF),
        HDA_CODEC_ID_MODEL(0x1d179f8b, "KX-6000 HDMI/DP",       MODEL_GF),
        HDA_CODEC_ID_MODEL(0x1d179f8c, "KX-6000G HDMI/DP",      MODEL_GF),
        HDA_CODEC_ID_MODEL(0x1d179f8d, "KX-6000G HDMI/DP",      MODEL_GF),
        HDA_CODEC_ID_MODEL(0x1d179f8e, "KX-7000 HDMI/DP",       MODEL_GF),
        HDA_CODEC_ID_MODEL(0x1d179f8f, "KX-7000 HDMI/DP",       MODEL_GF),
        HDA_CODEC_ID_MODEL(0x1d179f90, "KX-7000 HDMI/DP",       MODEL_GF),
        HDA_CODEC_ID_MODEL(0x67663d82, "Arise 82 HDMI/DP",      MODEL_GF),
        HDA_CODEC_ID_MODEL(0x67663d83, "Arise 83 HDMI/DP",      MODEL_GF),
        HDA_CODEC_ID_MODEL(0x67663d84, "Arise 84 HDMI/DP",      MODEL_GF),
        HDA_CODEC_ID_MODEL(0x67663d85, "Arise 85 HDMI/DP",      MODEL_GF),
        HDA_CODEC_ID_MODEL(0x67663d86, "Arise 86 HDMI/DP",      MODEL_GF),
        HDA_CODEC_ID_MODEL(0x67663d87, "Arise 87 HDMI/DP",      MODEL_GF),
        HDA_CODEC_ID_MODEL(0x80862801, "Bearlake HDMI",         MODEL_GENERIC),
        HDA_CODEC_ID_MODEL(0x80862802, "Cantiga HDMI",          MODEL_GENERIC),
        HDA_CODEC_ID_MODEL(0x80862803, "Eaglelake HDMI",        MODEL_GENERIC),
        HDA_CODEC_ID_MODEL(0x80862880, "CedarTrail HDMI",       MODEL_GENERIC),
        HDA_CODEC_ID_MODEL(0x808629fb, "Crestline HDMI",        MODEL_GENERIC),
        /* special ID for generic HDMI */
        HDA_CODEC_ID_MODEL(HDA_CODEC_ID_GENERIC_HDMI, "Generic HDMI", MODEL_GENERIC),
        {} /* terminator */
};
MODULE_DEVICE_TABLE(hdaudio, snd_hda_id_generichdmi);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Generic HDMI HD-audio codec");

static struct hda_codec_driver generichdmi_driver = {
        .id = snd_hda_id_generichdmi,
        .ops = &generichdmi_codec_ops,
};

module_hda_codec_driver(generichdmi_driver);