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patch_hdmi.c

/*
 *
 *  patch_hdmi.c - routines for HDMI/DisplayPort codecs
 *
 *  Copyright(c) 2008-2010 Intel Corporation. All rights reserved.
 *  Copyright (c) 2006 ATI Technologies Inc.
 *  Copyright (c) 2008 NVIDIA Corp.  All rights reserved.
 *  Copyright (c) 2008 Wei Ni <wni@nvidia.com>
 *
 *  Authors:
 *                Wu Fengguang <wfg@linux.intel.com>
 *
 *  Maintained by:
 *                Wu Fengguang <wfg@linux.intel.com>
 *
 *  This program is free software; you can redistribute it and/or modify it
 *  under the terms of the GNU General Public License as published by the Free
 *  Software Foundation; either version 2 of the License, or (at your option)
 *  any later version.
 *
 *  This program is distributed in the hope that it will be useful, but
 *  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 *  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 *  for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software Foundation,
 *  Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#include <linux/init.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/moduleparam.h>
#include <sound/core.h>
#include "hda_codec.h"
#include "hda_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");

/*
 * The HDMI/DisplayPort configuration can be highly dynamic. A graphics device
 * could support two independent pipes, each of them can be connected to one or
 * more ports (DVI, HDMI or DisplayPort).
 *
 * The HDA correspondence of pipes/ports are converter/pin nodes.
 */
#define MAX_HDMI_CVTS   3
#define MAX_HDMI_PINS   3

00053 struct hdmi_spec {
      int num_cvts;
      int num_pins;
      hda_nid_t cvt[MAX_HDMI_CVTS+1];  /* audio sources */
      hda_nid_t pin[MAX_HDMI_PINS+1];  /* audio sinks */

      /*
       * source connection for each pin
       */
      hda_nid_t pin_cvt[MAX_HDMI_PINS+1];

      /*
       * HDMI sink attached to each pin
       */
      struct hdmi_eld sink_eld[MAX_HDMI_PINS];

      /*
       * export one pcm per pipe
       */
      struct hda_pcm    pcm_rec[MAX_HDMI_CVTS];
      struct hda_pcm_stream codec_pcm_pars[MAX_HDMI_CVTS];

      /*
       * ati/nvhdmi specific
       */
      struct hda_multi_out multiout;
      struct hda_pcm_stream *pcm_playback;

      /* misc flags */
      /* PD bit indicates only the update, not the current state */
      unsigned int old_pin_detect:1;
};


00087 struct hdmi_audio_infoframe {
      u8 type; /* 0x84 */
      u8 ver;  /* 0x01 */
      u8 len;  /* 0x0a */

      u8 checksum;

      u8 CC02_CT47;     /* CC in bits 0:2, CT in 4:7 */
      u8 SS01_SF24;
      u8 CXT04;
      u8 CA;
      u8 LFEPBL01_LSV36_DM_INH7;
};

00101 struct dp_audio_infoframe {
      u8 type; /* 0x84 */
      u8 len;  /* 0x1b */
      u8 ver;  /* 0x11 << 2 */

      u8 CC02_CT47;     /* match with HDMI infoframe from this on */
      u8 SS01_SF24;
      u8 CXT04;
      u8 CA;
      u8 LFEPBL01_LSV36_DM_INH7;
};

/*
 * CEA speaker placement:
 *
 *        FLH       FCH        FRH
 *  FLW    FL  FLC   FC   FRC   FR   FRW
 *
 *                                  LFE
 *                     TC
 *
 *          RL  RLC   RC   RRC   RR
 *
 * The Left/Right Surround channel _notions_ LS/RS in SMPTE 320M corresponds to
 * CEA RL/RR; The SMPTE channel _assignment_ C/LFE is swapped to CEA LFE/FC.
 */
enum cea_speaker_placement {
      FL  = (1 <<  0),  /* Front Left           */
      FC  = (1 <<  1),  /* Front Center         */
      FR  = (1 <<  2),  /* Front Right          */
      FLC = (1 <<  3),  /* Front Left Center    */
      FRC = (1 <<  4),  /* Front Right Center   */
      RL  = (1 <<  5),  /* Rear Left            */
      RC  = (1 <<  6),  /* Rear Center          */
      RR  = (1 <<  7),  /* Rear Right           */
      RLC = (1 <<  8),  /* Rear Left Center     */
      RRC = (1 <<  9),  /* Rear Right Center    */
      LFE = (1 << 10),  /* Low Frequency Effect */
      FLW = (1 << 11),  /* Front Left Wide      */
      FRW = (1 << 12),  /* Front Right Wide     */
      FLH = (1 << 13),  /* Front Left High      */
      FCH = (1 << 14),  /* Front Center High    */
      FRH = (1 << 15),  /* Front Right High     */
      TC  = (1 << 16),  /* Top Center           */
};

/*
 * ELD SA bits in the CEA Speaker Allocation data block
 */
static int eld_speaker_allocation_bits[] = {
      [0] = FL | FR,
      [1] = LFE,
      [2] = FC,
      [3] = RL | RR,
      [4] = RC,
      [5] = FLC | FRC,
      [6] = RLC | RRC,
      /* the following are not defined in ELD yet */
      [7] = FLW | FRW,
      [8] = FLH | FRH,
      [9] = TC,
      [10] = FCH,
};

00165 struct cea_channel_speaker_allocation {
      int ca_index;
      int speakers[8];

      /* derived values, just for convenience */
      int channels;
      int spk_mask;
};

/*
 * ALSA sequence is:
 *
 *       surround40   surround41   surround50   surround51   surround71
 * ch0   front left   =            =            =            =
 * ch1   front right  =            =            =            =
 * ch2   rear left    =            =            =            =
 * ch3   rear right   =            =            =            =
 * ch4                LFE          center       center       center
 * ch5                                          LFE          LFE
 * ch6                                                       side left
 * ch7                                                       side right
 *
 * surround71 = {FL, FR, RLC, RRC, FC, LFE, RL, RR}
 */
static int hdmi_channel_mapping[0x32][8] = {
      /* stereo */
      [0x00] = { 0x00, 0x11, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7 },
      /* 2.1 */
      [0x01] = { 0x00, 0x11, 0x22, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7 },
      /* Dolby Surround */
      [0x02] = { 0x00, 0x11, 0x23, 0xf2, 0xf4, 0xf5, 0xf6, 0xf7 },
      /* surround40 */
      [0x08] = { 0x00, 0x11, 0x24, 0x35, 0xf3, 0xf2, 0xf6, 0xf7 },
      /* 4ch */
      [0x03] = { 0x00, 0x11, 0x23, 0x32, 0x44, 0xf5, 0xf6, 0xf7 },
      /* surround41 */
      [0x09] = { 0x00, 0x11, 0x24, 0x35, 0x42, 0xf3, 0xf6, 0xf7 },
      /* surround50 */
      [0x0a] = { 0x00, 0x11, 0x24, 0x35, 0x43, 0xf2, 0xf6, 0xf7 },
      /* surround51 */
      [0x0b] = { 0x00, 0x11, 0x24, 0x35, 0x43, 0x52, 0xf6, 0xf7 },
      /* 7.1 */
      [0x13] = { 0x00, 0x11, 0x26, 0x37, 0x43, 0x52, 0x64, 0x75 },
};

/*
 * This is an ordered list!
 *
 * The preceding ones have better chances to be selected by
 * hdmi_channel_allocation().
 */
static struct cea_channel_speaker_allocation channel_allocations[] = {
/*                  channel:   7     6    5    4    3     2    1    0  */
{ .ca_index = 0x00,  .speakers = {   0,    0,   0,   0,   0,    0,  FR,  FL } },
                         /* 2.1 */
{ .ca_index = 0x01,  .speakers = {   0,    0,   0,   0,   0,  LFE,  FR,  FL } },
                         /* Dolby Surround */
{ .ca_index = 0x02,  .speakers = {   0,    0,   0,   0,  FC,    0,  FR,  FL } },
                         /* surround40 */
{ .ca_index = 0x08,  .speakers = {   0,    0,  RR,  RL,   0,    0,  FR,  FL } },
                         /* surround41 */
{ .ca_index = 0x09,  .speakers = {   0,    0,  RR,  RL,   0,  LFE,  FR,  FL } },
                         /* surround50 */
{ .ca_index = 0x0a,  .speakers = {   0,    0,  RR,  RL,  FC,    0,  FR,  FL } },
                         /* surround51 */
{ .ca_index = 0x0b,  .speakers = {   0,    0,  RR,  RL,  FC,  LFE,  FR,  FL } },
                         /* 6.1 */
{ .ca_index = 0x0f,  .speakers = {   0,   RC,  RR,  RL,  FC,  LFE,  FR,  FL } },
                         /* surround71 */
{ .ca_index = 0x13,  .speakers = { RRC,  RLC,  RR,  RL,  FC,  LFE,  FR,  FL } },

{ .ca_index = 0x03,  .speakers = {   0,    0,   0,   0,  FC,  LFE,  FR,  FL } },
{ .ca_index = 0x04,  .speakers = {   0,    0,   0,  RC,   0,    0,  FR,  FL } },
{ .ca_index = 0x05,  .speakers = {   0,    0,   0,  RC,   0,  LFE,  FR,  FL } },
{ .ca_index = 0x06,  .speakers = {   0,    0,   0,  RC,  FC,    0,  FR,  FL } },
{ .ca_index = 0x07,  .speakers = {   0,    0,   0,  RC,  FC,  LFE,  FR,  FL } },
{ .ca_index = 0x0c,  .speakers = {   0,   RC,  RR,  RL,   0,    0,  FR,  FL } },
{ .ca_index = 0x0d,  .speakers = {   0,   RC,  RR,  RL,   0,  LFE,  FR,  FL } },
{ .ca_index = 0x0e,  .speakers = {   0,   RC,  RR,  RL,  FC,    0,  FR,  FL } },
{ .ca_index = 0x10,  .speakers = { RRC,  RLC,  RR,  RL,   0,    0,  FR,  FL } },
{ .ca_index = 0x11,  .speakers = { RRC,  RLC,  RR,  RL,   0,  LFE,  FR,  FL } },
{ .ca_index = 0x12,  .speakers = { RRC,  RLC,  RR,  RL,  FC,    0,  FR,  FL } },
{ .ca_index = 0x14,  .speakers = { FRC,  FLC,   0,   0,   0,    0,  FR,  FL } },
{ .ca_index = 0x15,  .speakers = { FRC,  FLC,   0,   0,   0,  LFE,  FR,  FL } },
{ .ca_index = 0x16,  .speakers = { FRC,  FLC,   0,   0,  FC,    0,  FR,  FL } },
{ .ca_index = 0x17,  .speakers = { FRC,  FLC,   0,   0,  FC,  LFE,  FR,  FL } },
{ .ca_index = 0x18,  .speakers = { FRC,  FLC,   0,  RC,   0,    0,  FR,  FL } },
{ .ca_index = 0x19,  .speakers = { FRC,  FLC,   0,  RC,   0,  LFE,  FR,  FL } },
{ .ca_index = 0x1a,  .speakers = { FRC,  FLC,   0,  RC,  FC,    0,  FR,  FL } },
{ .ca_index = 0x1b,  .speakers = { FRC,  FLC,   0,  RC,  FC,  LFE,  FR,  FL } },
{ .ca_index = 0x1c,  .speakers = { FRC,  FLC,  RR,  RL,   0,    0,  FR,  FL } },
{ .ca_index = 0x1d,  .speakers = { FRC,  FLC,  RR,  RL,   0,  LFE,  FR,  FL } },
{ .ca_index = 0x1e,  .speakers = { FRC,  FLC,  RR,  RL,  FC,    0,  FR,  FL } },
{ .ca_index = 0x1f,  .speakers = { FRC,  FLC,  RR,  RL,  FC,  LFE,  FR,  FL } },
{ .ca_index = 0x20,  .speakers = {   0,  FCH,  RR,  RL,  FC,    0,  FR,  FL } },
{ .ca_index = 0x21,  .speakers = {   0,  FCH,  RR,  RL,  FC,  LFE,  FR,  FL } },
{ .ca_index = 0x22,  .speakers = {  TC,    0,  RR,  RL,  FC,    0,  FR,  FL } },
{ .ca_index = 0x23,  .speakers = {  TC,    0,  RR,  RL,  FC,  LFE,  FR,  FL } },
{ .ca_index = 0x24,  .speakers = { FRH,  FLH,  RR,  RL,   0,    0,  FR,  FL } },
{ .ca_index = 0x25,  .speakers = { FRH,  FLH,  RR,  RL,   0,  LFE,  FR,  FL } },
{ .ca_index = 0x26,  .speakers = { FRW,  FLW,  RR,  RL,   0,    0,  FR,  FL } },
{ .ca_index = 0x27,  .speakers = { FRW,  FLW,  RR,  RL,   0,  LFE,  FR,  FL } },
{ .ca_index = 0x28,  .speakers = {  TC,   RC,  RR,  RL,  FC,    0,  FR,  FL } },
{ .ca_index = 0x29,  .speakers = {  TC,   RC,  RR,  RL,  FC,  LFE,  FR,  FL } },
{ .ca_index = 0x2a,  .speakers = { FCH,   RC,  RR,  RL,  FC,    0,  FR,  FL } },
{ .ca_index = 0x2b,  .speakers = { FCH,   RC,  RR,  RL,  FC,  LFE,  FR,  FL } },
{ .ca_index = 0x2c,  .speakers = {  TC,  FCH,  RR,  RL,  FC,    0,  FR,  FL } },
{ .ca_index = 0x2d,  .speakers = {  TC,  FCH,  RR,  RL,  FC,  LFE,  FR,  FL } },
{ .ca_index = 0x2e,  .speakers = { FRH,  FLH,  RR,  RL,  FC,    0,  FR,  FL } },
{ .ca_index = 0x2f,  .speakers = { FRH,  FLH,  RR,  RL,  FC,  LFE,  FR,  FL } },
{ .ca_index = 0x30,  .speakers = { FRW,  FLW,  RR,  RL,  FC,    0,  FR,  FL } },
{ .ca_index = 0x31,  .speakers = { FRW,  FLW,  RR,  RL,  FC,  LFE,  FR,  FL } },
};


/*
 * HDMI routines
 */

static int hda_node_index(hda_nid_t *nids, hda_nid_t nid)
{
      int i;

      for (i = 0; nids[i]; i++)
            if (nids[i] == nid)
                  return i;

      snd_printk(KERN_WARNING "HDMI: nid %d not registered\n", nid);
      return -EINVAL;
}

static void hdmi_get_show_eld(struct hda_codec *codec, hda_nid_t pin_nid,
                        struct hdmi_eld *eld)
{
      if (!snd_hdmi_get_eld(eld, codec, pin_nid))
            snd_hdmi_show_eld(eld);
}

#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_enable_output(struct hda_codec *codec, hda_nid_t pin_nid)
{
      /* 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);
      /* Enable pin out */
      snd_hda_codec_write(codec, pin_nid, 0,
                      AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT);
}

static int hdmi_get_channel_count(struct hda_codec *codec, hda_nid_t nid)
{
      return 1 + snd_hda_codec_read(codec, nid, 0,
                              AC_VERB_GET_CVT_CHAN_COUNT, 0);
}

static void hdmi_set_channel_count(struct hda_codec *codec,
                           hda_nid_t nid, int chs)
{
      if (chs != hdmi_get_channel_count(codec, nid))
            snd_hda_codec_write(codec, nid, 0,
                            AC_VERB_SET_CVT_CHAN_COUNT, chs - 1);
}


/*
 * Channel mapping routines
 */

/*
 * Compute derived values in channel_allocations[].
 */
static void init_channel_allocations(void)
{
      int i, j;
      struct cea_channel_speaker_allocation *p;

      for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
            p = channel_allocations + i;
            p->channels = 0;
            p->spk_mask = 0;
            for (j = 0; j < ARRAY_SIZE(p->speakers); j++)
                  if (p->speakers[j]) {
                        p->channels++;
                        p->spk_mask |= p->speakers[j];
                  }
      }
}

/*
 * The transformation takes two steps:
 *
 *    eld->spk_alloc => (eld_speaker_allocation_bits[]) => spk_mask
 *          spk_mask => (channel_allocations[])         => ai->CA
 *
 * TODO: it could select the wrong CA from multiple candidates.
*/
static int hdmi_channel_allocation(struct hda_codec *codec, hda_nid_t nid,
                           int channels)
{
      struct hdmi_spec *spec = codec->spec;
      struct hdmi_eld *eld;
      int i;
      int ca = 0;
      int spk_mask = 0;
      char buf[SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE];

      /*
       * CA defaults to 0 for basic stereo audio
       */
      if (channels <= 2)
            return 0;

      i = hda_node_index(spec->pin_cvt, nid);
      if (i < 0)
            return 0;
      eld = &spec->sink_eld[i];

      /*
       * HDMI sink's ELD info cannot always be retrieved for now, e.g.
       * in console or for audio devices. Assume the highest speakers
       * configuration, to _not_ prohibit multi-channel audio playback.
       */
      if (!eld->spk_alloc)
            eld->spk_alloc = 0xffff;

      /*
       * expand ELD's speaker allocation mask
       *
       * ELD tells the speaker mask in a compact(paired) form,
       * expand ELD's notions to match the ones used by Audio InfoFrame.
       */
      for (i = 0; i < ARRAY_SIZE(eld_speaker_allocation_bits); i++) {
            if (eld->spk_alloc & (1 << i))
                  spk_mask |= eld_speaker_allocation_bits[i];
      }

      /* search for the first working match in the CA table */
      for (i = 0; i < ARRAY_SIZE(channel_allocations); i++) {
            if (channels == channel_allocations[i].channels &&
                (spk_mask & channel_allocations[i].spk_mask) ==
                        channel_allocations[i].spk_mask) {
                  ca = channel_allocations[i].ca_index;
                  break;
            }
      }

      snd_print_channel_allocation(eld->spk_alloc, buf, sizeof(buf));
      snd_printdd("HDMI: select CA 0x%x for %d-channel allocation: %s\n",
                ca, channels, buf);

      return ca;
}

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

      for (i = 0; i < 8; i++) {
            slot = snd_hda_codec_read(codec, pin_nid, 0,
                                    AC_VERB_GET_HDMI_CHAN_SLOT, i);
            printk(KERN_DEBUG "HDMI: ASP channel %d => slot %d\n",
                                    slot >> 4, slot & 0xf);
      }
#endif
}


static void hdmi_setup_channel_mapping(struct hda_codec *codec,
                               hda_nid_t pin_nid,
                               int ca)
{
      int i;
      int err;

      if (hdmi_channel_mapping[ca][1] == 0) {
            for (i = 0; i < channel_allocations[ca].channels; i++)
                  hdmi_channel_mapping[ca][i] = i | (i << 4);
            for (; i < 8; i++)
                  hdmi_channel_mapping[ca][i] = 0xf | (i << 4);
      }

      for (i = 0; i < 8; i++) {
            err = snd_hda_codec_write(codec, pin_nid, 0,
                                AC_VERB_SET_HDMI_CHAN_SLOT,
                                hdmi_channel_mapping[ca][i]);
            if (err) {
                  snd_printdd(KERN_NOTICE
                            "HDMI: channel mapping failed\n");
                  break;
            }
      }

      hdmi_debug_channel_mapping(codec, pin_nid);
}


/*
 * 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);
      printk(KERN_DEBUG "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);
            printk(KERN_DEBUG "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)
                        snd_printd(KERN_INFO "dip index %d: %d != %d\n",
                                    bi, pi, i);
                  if (bi == 0) /* byte index wrapped around */
                        break;
            }
            snd_printd(KERN_INFO
                  "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;

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

      hdmi_set_dip_index(codec, pin_nid, 0x0, 0x0);
      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 void hdmi_setup_audio_infoframe(struct hda_codec *codec, hda_nid_t nid,
                              struct snd_pcm_substream *substream)
{
      struct hdmi_spec *spec = codec->spec;
      hda_nid_t pin_nid;
      int channels = substream->runtime->channels;
      int ca;
      int i;
      u8 ai[max(sizeof(struct hdmi_audio_infoframe),
              sizeof(struct dp_audio_infoframe))];

      ca = hdmi_channel_allocation(codec, nid, channels);

      for (i = 0; i < spec->num_pins; i++) {
            if (spec->pin_cvt[i] != nid)
                  continue;
            if (!spec->sink_eld[i].monitor_present)
                  continue;

            pin_nid = spec->pin[i];

            memset(ai, 0, sizeof(ai));
            if (spec->sink_eld[i].conn_type == 0) { /* HDMI */
                  struct hdmi_audio_infoframe *hdmi_ai;

                  hdmi_ai = (struct hdmi_audio_infoframe *)ai;
                  hdmi_ai->type           = 0x84;
                  hdmi_ai->ver            = 0x01;
                  hdmi_ai->len            = 0x0a;
                  hdmi_ai->CC02_CT47      = channels - 1;
                  hdmi_checksum_audio_infoframe(hdmi_ai);
            } else if (spec->sink_eld[i].conn_type == 1) { /* DisplayPort */
                  struct dp_audio_infoframe *dp_ai;

                  dp_ai = (struct dp_audio_infoframe *)ai;
                  dp_ai->type       = 0x84;
                  dp_ai->len        = 0x1b;
                  dp_ai->ver        = 0x11 << 2;
                  dp_ai->CC02_CT47  = channels - 1;
            } else {
                  snd_printd("HDMI: unknown connection type at pin %d\n",
                           pin_nid);
                  continue;
            }

            /*
             * 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, sizeof(ai))) {
                  snd_printdd("hdmi_setup_audio_infoframe: "
                            "cvt=%d pin=%d channels=%d\n",
                            nid, pin_nid,
                            channels);
                  hdmi_setup_channel_mapping(codec, pin_nid, ca);
                  hdmi_stop_infoframe_trans(codec, pin_nid);
                  hdmi_fill_audio_infoframe(codec, pin_nid,
                                      ai, sizeof(ai));
                  hdmi_start_infoframe_trans(codec, pin_nid);
            }
      }
}


/*
 * Unsolicited events
 */

static void hdmi_present_sense(struct hda_codec *codec, hda_nid_t pin_nid,
                         struct hdmi_eld *eld);

static void hdmi_intrinsic_event(struct hda_codec *codec, unsigned int res)
{
      struct hdmi_spec *spec = codec->spec;
      int tag = res >> AC_UNSOL_RES_TAG_SHIFT;
      int pind = !!(res & AC_UNSOL_RES_PD);
      int eldv = !!(res & AC_UNSOL_RES_ELDV);
      int index;

      printk(KERN_INFO
            "HDMI hot plug event: Pin=%d Presence_Detect=%d ELD_Valid=%d\n",
            tag, pind, eldv);

      index = hda_node_index(spec->pin, tag);
      if (index < 0)
            return;

      if (spec->old_pin_detect) {
            if (pind)
                  hdmi_present_sense(codec, tag, &spec->sink_eld[index]);
            pind = spec->sink_eld[index].monitor_present;
      }

      spec->sink_eld[index].monitor_present = pind;
      spec->sink_eld[index].eld_valid = eldv;

      if (pind && eldv) {
            hdmi_get_show_eld(codec, spec->pin[index],
                          &spec->sink_eld[index]);
            /* TODO: do real things about ELD */
      }
}

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);

      printk(KERN_INFO
            "HDMI CP event: PIN=%d SUBTAG=0x%x CP_STATE=%d CP_READY=%d\n",
            tag,
            subtag,
            cp_state,
            cp_ready);

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


static void hdmi_unsol_event(struct hda_codec *codec, unsigned int res)
{
      struct hdmi_spec *spec = codec->spec;
      int tag = res >> AC_UNSOL_RES_TAG_SHIFT;
      int subtag = (res & AC_UNSOL_RES_SUBTAG) >> AC_UNSOL_RES_SUBTAG_SHIFT;

      if (hda_node_index(spec->pin, tag) < 0) {
            snd_printd(KERN_INFO "Unexpected HDMI event tag 0x%x\n", tag);
            return;
      }

      if (subtag == 0)
            hdmi_intrinsic_event(codec, res);
      else
            hdmi_non_intrinsic_event(codec, res);
}

/*
 * 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_setup_stream(struct hda_codec *codec, hda_nid_t nid,
                        u32 stream_tag, int format)
{
      struct hdmi_spec *spec = codec->spec;
      int pinctl;
      int new_pinctl = 0;
      int i;

      for (i = 0; i < spec->num_pins; i++) {
            if (spec->pin_cvt[i] != nid)
                  continue;
            if (!(snd_hda_query_pin_caps(codec, spec->pin[i]) & AC_PINCAP_HBR))
                  continue;

            pinctl = snd_hda_codec_read(codec, spec->pin[i], 0,
                                  AC_VERB_GET_PIN_WIDGET_CONTROL, 0);

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

            snd_printdd("hdmi_setup_stream: "
                      "NID=0x%x, %spinctl=0x%x\n",
                      spec->pin[i],
                      pinctl == new_pinctl ? "" : "new-",
                      new_pinctl);

            if (pinctl != new_pinctl)
                  snd_hda_codec_write(codec, spec->pin[i], 0,
                                  AC_VERB_SET_PIN_WIDGET_CONTROL,
                                  new_pinctl);
      }

      if (is_hbr_format(format) && !new_pinctl) {
            snd_printdd("hdmi_setup_stream: HBR is not supported\n");
            return -EINVAL;
      }

      snd_hda_codec_setup_stream(codec, nid, stream_tag, 0, format);
      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 hdmi_eld *eld;
      struct hda_pcm_stream *codec_pars;
      struct snd_pcm_runtime *runtime = substream->runtime;
      unsigned int idx;

      for (idx = 0; idx < spec->num_cvts; idx++)
            if (hinfo->nid == spec->cvt[idx])
                  break;
      if (snd_BUG_ON(idx >= spec->num_cvts) ||
          snd_BUG_ON(idx >= spec->num_pins))
            return -EINVAL;

      /* save the PCM info the codec provides */
      codec_pars = &spec->codec_pcm_pars[idx];
      if (!codec_pars->rates)
            *codec_pars = *hinfo;

      eld = &spec->sink_eld[idx];
      if (!static_hdmi_pcm && eld->eld_valid && eld->sad_count > 0) {
            hdmi_eld_update_pcm_info(eld, hinfo, codec_pars);
            if (hinfo->channels_min > hinfo->channels_max ||
                !hinfo->rates || !hinfo->formats)
                  return -ENODEV;
      } else {
            /* fallback to the codec default */
            hinfo->channels_max = codec_pars->channels_max;
            hinfo->rates = codec_pars->rates;
            hinfo->formats = codec_pars->formats;
            hinfo->maxbps = codec_pars->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/HDMI auto parsing
 */
static int hdmi_read_pin_conn(struct hda_codec *codec, hda_nid_t pin_nid)
{
      struct hdmi_spec *spec = codec->spec;
      hda_nid_t conn_list[HDA_MAX_CONNECTIONS];
      int conn_len, curr;
      int index;

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

      conn_len = snd_hda_get_connections(codec, pin_nid, conn_list,
                                 HDA_MAX_CONNECTIONS);
      if (conn_len > 1)
            curr = snd_hda_codec_read(codec, pin_nid, 0,
                                AC_VERB_GET_CONNECT_SEL, 0);
      else
            curr = 0;

      index = hda_node_index(spec->pin, pin_nid);
      if (index < 0)
            return -EINVAL;

      spec->pin_cvt[index] = conn_list[curr];

      return 0;
}

static void hdmi_present_sense(struct hda_codec *codec, hda_nid_t pin_nid,
                         struct hdmi_eld *eld)
{
      int present = snd_hda_pin_sense(codec, pin_nid);

      eld->monitor_present    = !!(present & AC_PINSENSE_PRESENCE);
      eld->eld_valid          = !!(present & AC_PINSENSE_ELDV);

      if (present & AC_PINSENSE_ELDV)
            hdmi_get_show_eld(codec, pin_nid, eld);
}

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

      if (spec->num_pins >= MAX_HDMI_PINS) {
            snd_printk(KERN_WARNING
                     "HDMI: no space for pin %d\n", pin_nid);
            return -E2BIG;
      }

      hdmi_present_sense(codec, pin_nid, &spec->sink_eld[spec->num_pins]);

      spec->pin[spec->num_pins] = pin_nid;
      spec->num_pins++;

      return hdmi_read_pin_conn(codec, pin_nid);
}

static int hdmi_add_cvt(struct hda_codec *codec, hda_nid_t nid)
{
      int i, found_pin = 0;
      struct hdmi_spec *spec = codec->spec;

      for (i = 0; i < spec->num_pins; i++)
            if (nid == spec->pin_cvt[i]) {
                  found_pin = 1;
                  break;
            }

      if (!found_pin) {
            snd_printdd("HDMI: Skipping node %d (no connection)\n", nid);
            return -EINVAL;
      }

      if (snd_BUG_ON(spec->num_cvts >= MAX_HDMI_CVTS))
            return -E2BIG;

      spec->cvt[spec->num_cvts] = nid;
      spec->num_cvts++;

      return 0;
}

static int hdmi_parse_codec(struct hda_codec *codec)
{
      hda_nid_t nid;
      int i, nodes;
      int num_tmp_cvts = 0;
      hda_nid_t tmp_cvt[MAX_HDMI_CVTS];

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

      for (i = 0; i < nodes; i++, nid++) {
            unsigned int caps;
            unsigned int type;
            unsigned int config;

            caps = snd_hda_param_read(codec, nid, AC_PAR_AUDIO_WIDGET_CAP);
            type = get_wcaps_type(caps);

            if (!(caps & AC_WCAP_DIGITAL))
                  continue;

            switch (type) {
            case AC_WID_AUD_OUT:
                  if (num_tmp_cvts >= MAX_HDMI_CVTS) {
                        snd_printk(KERN_WARNING
                                 "HDMI: no space for converter %d\n", nid);
                        continue;
                  }
                  tmp_cvt[num_tmp_cvts] = nid;
                  num_tmp_cvts++;
                  break;
            case AC_WID_PIN:
                  caps = snd_hda_param_read(codec, nid, AC_PAR_PIN_CAP);
                  if (!(caps & (AC_PINCAP_HDMI | AC_PINCAP_DP)))
                        continue;

                  config = snd_hda_codec_read(codec, nid, 0,
                                   AC_VERB_GET_CONFIG_DEFAULT, 0);
                  if (get_defcfg_connect(config) == AC_JACK_PORT_NONE)
                        continue;

                  hdmi_add_pin(codec, nid);
                  break;
            }
      }

      for (i = 0; i < num_tmp_cvts; i++)
            hdmi_add_cvt(codec, tmp_cvt[i]);

      /*
       * G45/IbexPeak don't support EPSS: the unsolicited pin hot plug event
       * can be lost and presence sense verb will become inaccurate if the
       * HDA link is powered off at hot plug or hw initialization time.
       */
#ifdef CONFIG_SND_HDA_POWER_SAVE
      if (!(snd_hda_param_read(codec, codec->afg, AC_PAR_POWER_STATE) &
            AC_PWRST_EPSS))
            codec->bus->power_keep_link_on = 1;
#endif

      return 0;
}

/*
 */
static char *generic_hdmi_pcm_names[MAX_HDMI_CVTS] = {
      "HDMI 0",
      "HDMI 1",
      "HDMI 2",
};

/*
 * HDMI callbacks
 */

static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
                                 struct hda_codec *codec,
                                 unsigned int stream_tag,
                                 unsigned int format,
                                 struct snd_pcm_substream *substream)
{
      hdmi_set_channel_count(codec, hinfo->nid,
                         substream->runtime->channels);

      hdmi_setup_audio_infoframe(codec, hinfo->nid, substream);

      return hdmi_setup_stream(codec, hinfo->nid, stream_tag, format);
}

static struct hda_pcm_stream generic_hdmi_pcm_playback = {
      .substreams = 1,
      .channels_min = 2,
      .ops = {
            .open = hdmi_pcm_open,
            .prepare = generic_hdmi_playback_pcm_prepare,
      },
};

static int generic_hdmi_build_pcms(struct hda_codec *codec)
{
      struct hdmi_spec *spec = codec->spec;
      struct hda_pcm *info = spec->pcm_rec;
      int i;

      codec->num_pcms = spec->num_cvts;
      codec->pcm_info = info;

      for (i = 0; i < codec->num_pcms; i++, info++) {
            unsigned int chans;
            struct hda_pcm_stream *pstr;

            chans = get_wcaps(codec, spec->cvt[i]);
            chans = get_wcaps_channels(chans);

            info->name = generic_hdmi_pcm_names[i];
            info->pcm_type = HDA_PCM_TYPE_HDMI;
            pstr = &info->stream[SNDRV_PCM_STREAM_PLAYBACK];
            if (spec->pcm_playback)
                  *pstr = *spec->pcm_playback;
            else
                  *pstr = generic_hdmi_pcm_playback;
            pstr->nid = spec->cvt[i];
            if (pstr->channels_max <= 2 && chans && chans <= 16)
                  pstr->channels_max = chans;
      }

      return 0;
}

static int generic_hdmi_build_controls(struct hda_codec *codec)
{
      struct hdmi_spec *spec = codec->spec;
      int err;
      int i;

      for (i = 0; i < codec->num_pcms; i++) {
            err = snd_hda_create_spdif_out_ctls(codec, spec->cvt[i]);
            if (err < 0)
                  return err;
      }

      return 0;
}

static int generic_hdmi_init(struct hda_codec *codec)
{
      struct hdmi_spec *spec = codec->spec;
      int i;

      for (i = 0; spec->pin[i]; i++) {
            hdmi_enable_output(codec, spec->pin[i]);
            snd_hda_codec_write(codec, spec->pin[i], 0,
                            AC_VERB_SET_UNSOLICITED_ENABLE,
                            AC_USRSP_EN | spec->pin[i]);
      }
      return 0;
}

static void generic_hdmi_free(struct hda_codec *codec)
{
      struct hdmi_spec *spec = codec->spec;
      int i;

      for (i = 0; i < spec->num_pins; i++)
            snd_hda_eld_proc_free(codec, &spec->sink_eld[i]);

      kfree(spec);
}

static struct hda_codec_ops generic_hdmi_patch_ops = {
      .init             = generic_hdmi_init,
      .free             = generic_hdmi_free,
      .build_pcms       = generic_hdmi_build_pcms,
      .build_controls         = generic_hdmi_build_controls,
      .unsol_event            = hdmi_unsol_event,
};

static int patch_generic_hdmi(struct hda_codec *codec)
{
      struct hdmi_spec *spec;
      int i;

      spec = kzalloc(sizeof(*spec), GFP_KERNEL);
      if (spec == NULL)
            return -ENOMEM;

      codec->spec = spec;
      if (hdmi_parse_codec(codec) < 0) {
            codec->spec = NULL;
            kfree(spec);
            return -EINVAL;
      }
      codec->patch_ops = generic_hdmi_patch_ops;

      for (i = 0; i < spec->num_pins; i++)
            snd_hda_eld_proc_new(codec, &spec->sink_eld[i], i);

      init_channel_allocations();

      return 0;
}

/*
 * Nvidia specific implementations
 */

#define Nv_VERB_SET_Channel_Allocation          0xF79
#define Nv_VERB_SET_Info_Frame_Checksum         0xF7A
#define Nv_VERB_SET_Audio_Protection_On         0xF98
#define Nv_VERB_SET_Audio_Protection_Off        0xF99

#define nvhdmi_master_con_nid_7x    0x04
#define nvhdmi_master_pin_nid_7x    0x05

static hda_nid_t nvhdmi_con_nids_7x[4] = {
      /*front, rear, clfe, rear_surr */
      0x6, 0x8, 0xa, 0xc,
};

static struct hda_verb nvhdmi_basic_init_7x[] = {
      /* set audio protect on */
      { 0x1, Nv_VERB_SET_Audio_Protection_On, 0x1},
      /* enable digital output on pin widget */
      { 0x5, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT | 0x5 },
      { 0x7, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT | 0x5 },
      { 0x9, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT | 0x5 },
      { 0xb, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT | 0x5 },
      { 0xd, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT | 0x5 },
      {} /* terminator */
};

#ifdef LIMITED_RATE_FMT_SUPPORT
/* support only the safe format and rate */
#define SUPPORTED_RATES       SNDRV_PCM_RATE_48000
#define SUPPORTED_MAXBPS      16
#define SUPPORTED_FORMATS     SNDRV_PCM_FMTBIT_S16_LE
#else
/* support all rates and formats */
#define SUPPORTED_RATES \
      (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
      SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |\
       SNDRV_PCM_RATE_192000)
#define SUPPORTED_MAXBPS      24
#define SUPPORTED_FORMATS \
      (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE)
#endif

static int nvhdmi_7x_init(struct hda_codec *codec)
{
      snd_hda_sequence_write(codec, nvhdmi_basic_init_7x);
      return 0;
}

static unsigned int channels_2_6_8[] = {
      2, 6, 8
};

static unsigned int channels_2_8[] = {
      2, 8
};

static struct snd_pcm_hw_constraint_list hw_constraints_2_6_8_channels = {
      .count = ARRAY_SIZE(channels_2_6_8),
      .list = channels_2_6_8,
      .mask = 0,
};

static struct snd_pcm_hw_constraint_list hw_constraints_2_8_channels = {
      .count = ARRAY_SIZE(channels_2_8),
      .list = channels_2_8,
      .mask = 0,
};

static int simple_playback_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_hw_constraint_list *hw_constraints_channels = NULL;

      switch (codec->preset->id) {
      case 0x10de0002:
      case 0x10de0003:
      case 0x10de0005:
      case 0x10de0006:
            hw_constraints_channels = &hw_constraints_2_8_channels;
            break;
      case 0x10de0007:
            hw_constraints_channels = &hw_constraints_2_6_8_channels;
            break;
      default:
            break;
      }

      if (hw_constraints_channels != NULL) {
            snd_pcm_hw_constraint_list(substream->runtime, 0,
                        SNDRV_PCM_HW_PARAM_CHANNELS,
                        hw_constraints_channels);
      } else {
            snd_pcm_hw_constraint_step(substream->runtime, 0,
                                 SNDRV_PCM_HW_PARAM_CHANNELS, 2);
      }

      return snd_hda_multi_out_dig_open(codec, &spec->multiout);
}

static int simple_playback_pcm_close(struct hda_pcm_stream *hinfo,
                             struct hda_codec *codec,
                             struct snd_pcm_substream *substream)
{
      struct hdmi_spec *spec = codec->spec;
      return snd_hda_multi_out_dig_close(codec, &spec->multiout);
}

static int simple_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
                               struct hda_codec *codec,
                               unsigned int stream_tag,
                               unsigned int format,
                               struct snd_pcm_substream *substream)
{
      struct hdmi_spec *spec = codec->spec;
      return snd_hda_multi_out_dig_prepare(codec, &spec->multiout,
                                   stream_tag, format, substream);
}

static int nvhdmi_8ch_7x_pcm_close(struct hda_pcm_stream *hinfo,
                           struct hda_codec *codec,
                           struct snd_pcm_substream *substream)
{
      struct hdmi_spec *spec = codec->spec;
      int i;

      snd_hda_codec_write(codec, nvhdmi_master_con_nid_7x,
                  0, AC_VERB_SET_CHANNEL_STREAMID, 0);
      for (i = 0; i < 4; i++) {
            /* set the stream id */
            snd_hda_codec_write(codec, nvhdmi_con_nids_7x[i], 0,
                        AC_VERB_SET_CHANNEL_STREAMID, 0);
            /* set the stream format */
            snd_hda_codec_write(codec, nvhdmi_con_nids_7x[i], 0,
                        AC_VERB_SET_STREAM_FORMAT, 0);
      }

      return snd_hda_multi_out_dig_close(codec, &spec->multiout);
}

static int nvhdmi_8ch_7x_pcm_prepare(struct hda_pcm_stream *hinfo,
                             struct hda_codec *codec,
                             unsigned int stream_tag,
                             unsigned int format,
                             struct snd_pcm_substream *substream)
{
      int chs;
      unsigned int dataDCC1, dataDCC2, chan, chanmask, channel_id;
      int i;

      mutex_lock(&codec->spdif_mutex);

      chs = substream->runtime->channels;
      chan = chs ? (chs - 1) : 1;

      switch (chs) {
      default:
      case 0:
      case 2:
            chanmask = 0x00;
            break;
      case 4:
            chanmask = 0x08;
            break;
      case 6:
            chanmask = 0x0b;
            break;
      case 8:
            chanmask = 0x13;
            break;
      }
      dataDCC1 = AC_DIG1_ENABLE | AC_DIG1_COPYRIGHT;
      dataDCC2 = 0x2;

      /* set the Audio InforFrame Channel Allocation */
      snd_hda_codec_write(codec, 0x1, 0,
                  Nv_VERB_SET_Channel_Allocation, chanmask);

      /* turn off SPDIF once; otherwise the IEC958 bits won't be updated */
      if (codec->spdif_status_reset && (codec->spdif_ctls & AC_DIG1_ENABLE))
            snd_hda_codec_write(codec,
                        nvhdmi_master_con_nid_7x,
                        0,
                        AC_VERB_SET_DIGI_CONVERT_1,
                        codec->spdif_ctls & ~AC_DIG1_ENABLE & 0xff);

      /* set the stream id */
      snd_hda_codec_write(codec, nvhdmi_master_con_nid_7x, 0,
                  AC_VERB_SET_CHANNEL_STREAMID, (stream_tag << 4) | 0x0);

      /* set the stream format */
      snd_hda_codec_write(codec, nvhdmi_master_con_nid_7x, 0,
                  AC_VERB_SET_STREAM_FORMAT, format);

      /* turn on again (if needed) */
      /* enable and set the channel status audio/data flag */
      if (codec->spdif_status_reset && (codec->spdif_ctls & AC_DIG1_ENABLE)) {
            snd_hda_codec_write(codec,
                        nvhdmi_master_con_nid_7x,
                        0,
                        AC_VERB_SET_DIGI_CONVERT_1,
                        codec->spdif_ctls & 0xff);
            snd_hda_codec_write(codec,
                        nvhdmi_master_con_nid_7x,
                        0,
                        AC_VERB_SET_DIGI_CONVERT_2, dataDCC2);
      }

      for (i = 0; i < 4; i++) {
            if (chs == 2)
                  channel_id = 0;
            else
                  channel_id = i * 2;

            /* turn off SPDIF once;
             *otherwise the IEC958 bits won't be updated
             */
            if (codec->spdif_status_reset &&
            (codec->spdif_ctls & AC_DIG1_ENABLE))
                  snd_hda_codec_write(codec,
                        nvhdmi_con_nids_7x[i],
                        0,
                        AC_VERB_SET_DIGI_CONVERT_1,
                        codec->spdif_ctls & ~AC_DIG1_ENABLE & 0xff);
            /* set the stream id */
            snd_hda_codec_write(codec,
                        nvhdmi_con_nids_7x[i],
                        0,
                        AC_VERB_SET_CHANNEL_STREAMID,
                        (stream_tag << 4) | channel_id);
            /* set the stream format */
            snd_hda_codec_write(codec,
                        nvhdmi_con_nids_7x[i],
                        0,
                        AC_VERB_SET_STREAM_FORMAT,
                        format);
            /* turn on again (if needed) */
            /* enable and set the channel status audio/data flag */
            if (codec->spdif_status_reset &&
            (codec->spdif_ctls & AC_DIG1_ENABLE)) {
                  snd_hda_codec_write(codec,
                              nvhdmi_con_nids_7x[i],
                              0,
                              AC_VERB_SET_DIGI_CONVERT_1,
                              codec->spdif_ctls & 0xff);
                  snd_hda_codec_write(codec,
                              nvhdmi_con_nids_7x[i],
                              0,
                              AC_VERB_SET_DIGI_CONVERT_2, dataDCC2);
            }
      }

      /* set the Audio Info Frame Checksum */
      snd_hda_codec_write(codec, 0x1, 0,
                  Nv_VERB_SET_Info_Frame_Checksum,
                  (0x71 - chan - chanmask));

      mutex_unlock(&codec->spdif_mutex);
      return 0;
}

static struct hda_pcm_stream nvhdmi_pcm_playback_8ch_7x = {
      .substreams = 1,
      .channels_min = 2,
      .channels_max = 8,
      .nid = nvhdmi_master_con_nid_7x,
      .rates = SUPPORTED_RATES,
      .maxbps = SUPPORTED_MAXBPS,
      .formats = SUPPORTED_FORMATS,
      .ops = {
            .open = simple_playback_pcm_open,
            .close = nvhdmi_8ch_7x_pcm_close,
            .prepare = nvhdmi_8ch_7x_pcm_prepare
      },
};

static struct hda_pcm_stream nvhdmi_pcm_playback_2ch = {
      .substreams = 1,
      .channels_min = 2,
      .channels_max = 2,
      .nid = nvhdmi_master_con_nid_7x,
      .rates = SUPPORTED_RATES,
      .maxbps = SUPPORTED_MAXBPS,
      .formats = SUPPORTED_FORMATS,
      .ops = {
            .open = simple_playback_pcm_open,
            .close = simple_playback_pcm_close,
            .prepare = simple_playback_pcm_prepare
      },
};

static struct hda_codec_ops nvhdmi_patch_ops_8ch_7x = {
      .build_controls = generic_hdmi_build_controls,
      .build_pcms = generic_hdmi_build_pcms,
      .init = nvhdmi_7x_init,
      .free = generic_hdmi_free,
};

static struct hda_codec_ops nvhdmi_patch_ops_2ch = {
      .build_controls = generic_hdmi_build_controls,
      .build_pcms = generic_hdmi_build_pcms,
      .init = nvhdmi_7x_init,
      .free = generic_hdmi_free,
};

static int patch_nvhdmi_8ch_89(struct hda_codec *codec)
{
      struct hdmi_spec *spec;
      int err = patch_generic_hdmi(codec);

      if (err < 0)
            return err;
      spec = codec->spec;
      spec->old_pin_detect = 1;
      return 0;
}

static int patch_nvhdmi_2ch(struct hda_codec *codec)
{
      struct hdmi_spec *spec;

      spec = kzalloc(sizeof(*spec), GFP_KERNEL);
      if (spec == NULL)
            return -ENOMEM;

      codec->spec = spec;

      spec->multiout.num_dacs = 0;  /* no analog */
      spec->multiout.max_channels = 2;
      spec->multiout.dig_out_nid = nvhdmi_master_con_nid_7x;
      spec->old_pin_detect = 1;
      spec->num_cvts = 1;
      spec->cvt[0] = nvhdmi_master_con_nid_7x;
      spec->pcm_playback = &nvhdmi_pcm_playback_2ch;

      codec->patch_ops = nvhdmi_patch_ops_2ch;

      return 0;
}

static int patch_nvhdmi_8ch_7x(struct hda_codec *codec)
{
      struct hdmi_spec *spec;
      int err = patch_nvhdmi_2ch(codec);

      if (err < 0)
            return err;
      spec = codec->spec;
      spec->multiout.max_channels = 8;
      spec->pcm_playback = &nvhdmi_pcm_playback_8ch_7x;
      codec->patch_ops = nvhdmi_patch_ops_8ch_7x;
      return 0;
}

/*
 * ATI-specific implementations
 *
 * FIXME: we may omit the whole this and use the generic code once after
 * it's confirmed to work.
 */

#define ATIHDMI_CVT_NID       0x02  /* audio converter */
#define ATIHDMI_PIN_NID       0x03  /* HDMI output pin */

static int atihdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
                              struct hda_codec *codec,
                              unsigned int stream_tag,
                              unsigned int format,
                              struct snd_pcm_substream *substream)
{
      struct hdmi_spec *spec = codec->spec;
      int chans = substream->runtime->channels;
      int i, err;

      err = simple_playback_pcm_prepare(hinfo, codec, stream_tag, format,
                                substream);
      if (err < 0)
            return err;
      snd_hda_codec_write(codec, spec->cvt[0], 0, AC_VERB_SET_CVT_CHAN_COUNT,
                      chans - 1);
      /* FIXME: XXX */
      for (i = 0; i < chans; i++) {
            snd_hda_codec_write(codec, spec->cvt[0], 0,
                            AC_VERB_SET_HDMI_CHAN_SLOT,
                            (i << 4) | i);
      }
      return 0;
}

static struct hda_pcm_stream atihdmi_pcm_digital_playback = {
      .substreams = 1,
      .channels_min = 2,
      .channels_max = 2,
      .nid = ATIHDMI_CVT_NID,
      .ops = {
            .open = simple_playback_pcm_open,
            .close = simple_playback_pcm_close,
            .prepare = atihdmi_playback_pcm_prepare
      },
};

static struct hda_verb atihdmi_basic_init[] = {
      /* enable digital output on pin widget */
      { 0x03, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT },
      {} /* terminator */
};

static int atihdmi_init(struct hda_codec *codec)
{
      struct hdmi_spec *spec = codec->spec;

      snd_hda_sequence_write(codec, atihdmi_basic_init);
      /* SI codec requires to unmute the pin */
      if (get_wcaps(codec, spec->pin[0]) & AC_WCAP_OUT_AMP)
            snd_hda_codec_write(codec, spec->pin[0], 0,
                            AC_VERB_SET_AMP_GAIN_MUTE,
                            AMP_OUT_UNMUTE);
      return 0;
}

static struct hda_codec_ops atihdmi_patch_ops = {
      .build_controls = generic_hdmi_build_controls,
      .build_pcms = generic_hdmi_build_pcms,
      .init = atihdmi_init,
      .free = generic_hdmi_free,
};


static int patch_atihdmi(struct hda_codec *codec)
{
      struct hdmi_spec *spec;

      spec = kzalloc(sizeof(*spec), GFP_KERNEL);
      if (spec == NULL)
            return -ENOMEM;

      codec->spec = spec;

      spec->multiout.num_dacs = 0;    /* no analog */
      spec->multiout.max_channels = 2;
      spec->multiout.dig_out_nid = ATIHDMI_CVT_NID;
      spec->num_cvts = 1;
      spec->cvt[0] = ATIHDMI_CVT_NID;
      spec->pin[0] = ATIHDMI_PIN_NID;
      spec->pcm_playback = &atihdmi_pcm_digital_playback;

      codec->patch_ops = atihdmi_patch_ops;

      return 0;
}


/*
 * patch entries
 */
static struct hda_codec_preset snd_hda_preset_hdmi[] = {
{ .id = 0x1002793c, .name = "RS600 HDMI", .patch = patch_atihdmi },
{ .id = 0x10027919, .name = "RS600 HDMI", .patch = patch_atihdmi },
{ .id = 0x1002791a, .name = "RS690/780 HDMI",   .patch = patch_atihdmi },
{ .id = 0x1002aa01, .name = "R6xx HDMI",  .patch = patch_generic_hdmi },
{ .id = 0x10951390, .name = "SiI1390 HDMI",     .patch = patch_generic_hdmi },
{ .id = 0x10951392, .name = "SiI1392 HDMI",     .patch = patch_generic_hdmi },
{ .id = 0x17e80047, .name = "Chrontel HDMI",    .patch = patch_generic_hdmi },
{ .id = 0x10de0002, .name = "MCP77/78 HDMI",    .patch = patch_nvhdmi_8ch_7x },
{ .id = 0x10de0003, .name = "MCP77/78 HDMI",    .patch = patch_nvhdmi_8ch_7x },
{ .id = 0x10de0005, .name = "MCP77/78 HDMI",    .patch = patch_nvhdmi_8ch_7x },
{ .id = 0x10de0006, .name = "MCP77/78 HDMI",    .patch = patch_nvhdmi_8ch_7x },
{ .id = 0x10de0007, .name = "MCP79/7A HDMI",    .patch = patch_nvhdmi_8ch_7x },
{ .id = 0x10de000a, .name = "GPU 0a HDMI/DP",   .patch = patch_nvhdmi_8ch_89 },
{ .id = 0x10de000b, .name = "GPU 0b HDMI/DP",   .patch = patch_nvhdmi_8ch_89 },
{ .id = 0x10de000c, .name = "MCP89 HDMI", .patch = patch_nvhdmi_8ch_89 },
{ .id = 0x10de000d, .name = "GPU 0d HDMI/DP",   .patch = patch_nvhdmi_8ch_89 },
{ .id = 0x10de0010, .name = "GPU 10 HDMI/DP",   .patch = patch_nvhdmi_8ch_89 },
{ .id = 0x10de0011, .name = "GPU 11 HDMI/DP",   .patch = patch_nvhdmi_8ch_89 },
{ .id = 0x10de0012, .name = "GPU 12 HDMI/DP",   .patch = patch_nvhdmi_8ch_89 },
{ .id = 0x10de0013, .name = "GPU 13 HDMI/DP",   .patch = patch_nvhdmi_8ch_89 },
{ .id = 0x10de0014, .name = "GPU 14 HDMI/DP",   .patch = patch_nvhdmi_8ch_89 },
{ .id = 0x10de0018, .name = "GPU 18 HDMI/DP",   .patch = patch_nvhdmi_8ch_89 },
{ .id = 0x10de0019, .name = "GPU 19 HDMI/DP",   .patch = patch_nvhdmi_8ch_89 },
{ .id = 0x10de001a, .name = "GPU 1a HDMI/DP",   .patch = patch_nvhdmi_8ch_89 },
{ .id = 0x10de001b, .name = "GPU 1b HDMI/DP",   .patch = patch_nvhdmi_8ch_89 },
{ .id = 0x10de001c, .name = "GPU 1c HDMI/DP",   .patch = patch_nvhdmi_8ch_89 },
{ .id = 0x10de0040, .name = "GPU 40 HDMI/DP",   .patch = patch_nvhdmi_8ch_89 },
{ .id = 0x10de0041, .name = "GPU 41 HDMI/DP",   .patch = patch_nvhdmi_8ch_89 },
{ .id = 0x10de0042, .name = "GPU 42 HDMI/DP",   .patch = patch_nvhdmi_8ch_89 },
{ .id = 0x10de0043, .name = "GPU 43 HDMI/DP",   .patch = patch_nvhdmi_8ch_89 },
{ .id = 0x10de0044, .name = "GPU 44 HDMI/DP",   .patch = patch_nvhdmi_8ch_89 },
{ .id = 0x10de0067, .name = "MCP67 HDMI", .patch = patch_nvhdmi_2ch },
{ .id = 0x10de8001, .name = "MCP73 HDMI", .patch = patch_nvhdmi_2ch },
{ .id = 0x80860054, .name = "IbexPeak HDMI",    .patch = patch_generic_hdmi },
{ .id = 0x80862801, .name = "Bearlake HDMI",    .patch = patch_generic_hdmi },
{ .id = 0x80862802, .name = "Cantiga HDMI",     .patch = patch_generic_hdmi },
{ .id = 0x80862803, .name = "Eaglelake HDMI",   .patch = patch_generic_hdmi },
{ .id = 0x80862804, .name = "IbexPeak HDMI",    .patch = patch_generic_hdmi },
{ .id = 0x80862805, .name = "CougarPoint HDMI", .patch = patch_generic_hdmi },
{ .id = 0x808629fb, .name = "Crestline HDMI",   .patch = patch_generic_hdmi },
{} /* terminator */
};

MODULE_ALIAS("snd-hda-codec-id:1002793c");
MODULE_ALIAS("snd-hda-codec-id:10027919");
MODULE_ALIAS("snd-hda-codec-id:1002791a");
MODULE_ALIAS("snd-hda-codec-id:1002aa01");
MODULE_ALIAS("snd-hda-codec-id:10951390");
MODULE_ALIAS("snd-hda-codec-id:10951392");
MODULE_ALIAS("snd-hda-codec-id:10de0002");
MODULE_ALIAS("snd-hda-codec-id:10de0003");
MODULE_ALIAS("snd-hda-codec-id:10de0005");
MODULE_ALIAS("snd-hda-codec-id:10de0006");
MODULE_ALIAS("snd-hda-codec-id:10de0007");
MODULE_ALIAS("snd-hda-codec-id:10de000a");
MODULE_ALIAS("snd-hda-codec-id:10de000b");
MODULE_ALIAS("snd-hda-codec-id:10de000c");
MODULE_ALIAS("snd-hda-codec-id:10de000d");
MODULE_ALIAS("snd-hda-codec-id:10de0010");
MODULE_ALIAS("snd-hda-codec-id:10de0011");
MODULE_ALIAS("snd-hda-codec-id:10de0012");
MODULE_ALIAS("snd-hda-codec-id:10de0013");
MODULE_ALIAS("snd-hda-codec-id:10de0014");
MODULE_ALIAS("snd-hda-codec-id:10de0018");
MODULE_ALIAS("snd-hda-codec-id:10de0019");
MODULE_ALIAS("snd-hda-codec-id:10de001a");
MODULE_ALIAS("snd-hda-codec-id:10de001b");
MODULE_ALIAS("snd-hda-codec-id:10de001c");
MODULE_ALIAS("snd-hda-codec-id:10de0040");
MODULE_ALIAS("snd-hda-codec-id:10de0041");
MODULE_ALIAS("snd-hda-codec-id:10de0042");
MODULE_ALIAS("snd-hda-codec-id:10de0043");
MODULE_ALIAS("snd-hda-codec-id:10de0044");
MODULE_ALIAS("snd-hda-codec-id:10de0067");
MODULE_ALIAS("snd-hda-codec-id:10de8001");
MODULE_ALIAS("snd-hda-codec-id:17e80047");
MODULE_ALIAS("snd-hda-codec-id:80860054");
MODULE_ALIAS("snd-hda-codec-id:80862801");
MODULE_ALIAS("snd-hda-codec-id:80862802");
MODULE_ALIAS("snd-hda-codec-id:80862803");
MODULE_ALIAS("snd-hda-codec-id:80862804");
MODULE_ALIAS("snd-hda-codec-id:80862805");
MODULE_ALIAS("snd-hda-codec-id:808629fb");

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("HDMI HD-audio codec");
MODULE_ALIAS("snd-hda-codec-intelhdmi");
MODULE_ALIAS("snd-hda-codec-nvhdmi");
MODULE_ALIAS("snd-hda-codec-atihdmi");

static struct hda_codec_preset_list intel_list = {
      .preset = snd_hda_preset_hdmi,
      .owner = THIS_MODULE,
};

static int __init patch_hdmi_init(void)
{
      return snd_hda_add_codec_preset(&intel_list);
}

static void __exit patch_hdmi_exit(void)
{
      snd_hda_delete_codec_preset(&intel_list);
}

module_init(patch_hdmi_init)
module_exit(patch_hdmi_exit)

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