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698544de8a
linux/sound/pci/hda/patch_intelhdmi.c
Wu Fengguang 698544de8a ALSA: hda: HDMI channel allocations for audio infoframe 
To play a 3+ channels LPCM/DSD stream via HDMI,

	- HDMI sink must tell HDMI source about its speaker placements
	  (via ELD, speaker-allocation field)
	- HDMI source must tell the HDMI sink about channel allocation
	  (via audio infoframe, channel-allocation field)

(related docs: HDMI 1.3a spec section 7.4, CEA-861-D section 7.5.3 and 6.6)

This patch attempts to set the CA(channel-allocation) byte in the audio infoframe
according to
	- the number of channels in the current stream
	- the speakers attached to the HDMI sink

A channel_allocations[] line must meet the following two criteria to be
considered as a valid candidate for CA:
	1) its number of allocated channels = substream->runtime->channels
	2) its speakers are a subset of the available ones on the sink side

If there are multiple candidates, the first one is selected.  This simple
policy shall cheat the sink into playing music, but may direct data to the
wrong speakers.

Signed-off-by: Wu Fengguang <wfg@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-11-19 07:35:36 +01:00

674 lines
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/*
*
* patch_intelhdmi.c - Patch for Intel HDMI codecs
*
* Copyright(c) 2008 Intel Corporation. All rights reserved.
*
* Authors:
* Jiang Zhe <zhe.jiang@intel.com>
* 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 <sound/core.h>
#include "hda_codec.h"
#include "hda_local.h"
#include "hda_patch.h"
#define CVT_NID 0x02 /* audio converter */
#define PIN_NID 0x03 /* HDMI output pin */
#define INTEL_HDMI_EVENT_TAG 0x08
struct intel_hdmi_spec {
struct hda_multi_out multiout;
struct hda_pcm pcm_rec;
struct sink_eld sink;
};
static struct hda_verb pinout_enable_verb[] = {
{PIN_NID, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT},
{} /* terminator */
};
static struct hda_verb pinout_disable_verb[] = {
{PIN_NID, AC_VERB_SET_PIN_WIDGET_CONTROL, 0x00},
{}
};
static struct hda_verb unsolicited_response_verb[] = {
{PIN_NID, AC_VERB_SET_UNSOLICITED_ENABLE, AC_USRSP_EN |
INTEL_HDMI_EVENT_TAG},
{}
};
static struct hda_verb def_chan_map[] = {
{CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x00},
{CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x11},
{CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x22},
{CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x33},
{CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x44},
{CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x55},
{CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x66},
{CVT_NID, AC_VERB_SET_HDMI_CHAN_SLOT, 0x77},
{}
};
struct hdmi_audio_infoframe {
u8 type; /* 0x84 */
u8 ver; /* 0x01 */
u8 len; /* 0x0a */
u8 checksum; /* PB0 */
u8 CC02_CT47; /* CC in bits 0:2, CT in 4:7 */
u8 SS01_SF24;
u8 CXT04;
u8 CA;
u8 LFEPBL01_LSV36_DM_INH7;
u8 reserved[5]; /* PB6 - PB10 */
};
/*
* 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,
};
struct cea_channel_speaker_allocation {
int ca_index;
int speakers[8];
/* derived values, just for convenience */
int channels;
int spk_mask;
};
/*
* This is an ordered list!
*
* The preceding ones have better chances to be selected by
* hdmi_setup_channel_allocation().
*/
static struct cea_channel_speaker_allocation channel_allocations[] = {
/* channel: 8 7 6 5 4 3 2 1 */
{ .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 } },
{ .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 = 0x08, .speakers = { 0, 0, RR, RL, 0, 0, FR, FL } },
{ .ca_index = 0x09, .speakers = { 0, 0, RR, RL, 0, LFE, FR, FL } },
{ .ca_index = 0x0a, .speakers = { 0, 0, RR, RL, FC, 0, FR, FL } },
/* 5.1 */
{ .ca_index = 0x0b, .speakers = { 0, 0, RR, RL, 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 } },
/* 6.1 */
{ .ca_index = 0x0f, .speakers = { 0, RC, RR, RL, FC, LFE, 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 } },
/* 7.1 */
{ .ca_index = 0x13, .speakers = { RRC, RLC, RR, RL, FC, LFE, 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
*/
#ifdef BE_PARANOID
static void hdmi_get_dip_index(struct hda_codec *codec, hda_nid_t nid,
int *packet_index, int *byte_index)
{
int val;
val = snd_hda_codec_read(codec, 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 nid,
int packet_index, int byte_index)
{
int val;
val = (packet_index << 5) | (byte_index & 0x1f);
snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_HDMI_DIP_INDEX, val);
}
static void hdmi_write_dip_byte(struct hda_codec *codec, hda_nid_t nid,
unsigned char val)
{
snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_HDMI_DIP_DATA, val);
}
static void hdmi_enable_output(struct hda_codec *codec)
{
/* Enable Audio InfoFrame Transmission */
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);
/* 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_sequence_write(codec, pinout_enable_verb);
}
static void hdmi_disable_output(struct hda_codec *codec)
{
snd_hda_sequence_write(codec, pinout_disable_verb);
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_MUTE);
/*
* FIXME: noises may arise when playing music after reloading the
* kernel module, until the next X restart or monitor repower.
*/
}
static int hdmi_get_channel_count(struct hda_codec *codec)
{
return 1 + snd_hda_codec_read(codec, CVT_NID, 0,
AC_VERB_GET_CVT_CHAN_COUNT, 0);
}
static void hdmi_set_channel_count(struct hda_codec *codec, int chs)
{
snd_hda_codec_write(codec, CVT_NID, 0,
AC_VERB_SET_CVT_CHAN_COUNT, chs - 1);
if (chs != hdmi_get_channel_count(codec))
snd_printd(KERN_INFO "Channel count expect=%d, real=%d\n",
chs, hdmi_get_channel_count(codec));
}
static void hdmi_debug_slot_mapping(struct hda_codec *codec)
{
#ifdef CONFIG_SND_DEBUG_VERBOSE
int i;
int slot;
for (i = 0; i < 8; i++) {
slot = snd_hda_codec_read(codec, CVT_NID, 0,
AC_VERB_GET_HDMI_CHAN_SLOT, i);
printk(KERN_DEBUG "ASP channel %d => slot %d\n",
slot >> 4, slot & 0x7);
}
#endif
}
static void hdmi_setup_channel_mapping(struct hda_codec *codec)
{
snd_hda_sequence_write(codec, def_chan_map);
hdmi_debug_slot_mapping(codec);
}
static void hdmi_parse_eld(struct hda_codec *codec)
{
struct intel_hdmi_spec *spec = codec->spec;
struct sink_eld *eld = &spec->sink;
if (!snd_hdmi_get_eld(eld, codec, PIN_NID))
snd_hdmi_show_eld(eld);
}
/*
* Audio Infoframe routines
*/
static void hdmi_debug_dip_size(struct hda_codec *codec)
{
#ifdef CONFIG_SND_DEBUG_VERBOSE
int i;
int size;
size = snd_hdmi_get_eld_size(codec, PIN_NID);
printk(KERN_DEBUG "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 "DIP GP[%d] buf size is %d\n", i, size);
}
#endif
}
static void hdmi_clear_dip_buffers(struct hda_codec *codec)
{
#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
"DIP GP[%d] buf reported size=%d, written=%d\n",
i, size, j);
}
#endif
}
static void hdmi_fill_audio_infoframe(struct hda_codec *codec,
struct hdmi_audio_infoframe *ai)
{
u8 *params = (u8 *)ai;
int i;
hdmi_debug_dip_size(codec);
hdmi_clear_dip_buffers(codec); /* be paranoid */
hdmi_set_dip_index(codec, PIN_NID, 0x0, 0x0);
for (i = 0; i < sizeof(ai); i++)
hdmi_write_dip_byte(codec, PIN_NID, params[i]);
}
/*
* 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_setup_channel_allocation(struct hda_codec *codec,
struct hdmi_audio_infoframe *ai)
{
struct intel_hdmi_spec *spec = codec->spec;
struct sink_eld *eld = &spec->sink;
int i;
int spk_mask = 0;
int channels = 1 + (ai->CC02_CT47 & 0x7);
char buf[SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE];
/*
* CA defaults to 0 for basic stereo audio
*/
if (!eld->eld_ver)
return 0;
if (!eld->spk_alloc)
return 0;
if (channels <= 2)
return 0;
/*
* 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) {
ai->CA = channel_allocations[i].ca_index;
return 0;
}
}
snd_print_channel_allocation(eld->spk_alloc, buf, sizeof(buf));
snd_printd(KERN_INFO "failed to setup channel allocation: %d of %s\n",
channels, buf);
return -1;
}
static void hdmi_setup_audio_infoframe(struct hda_codec *codec,
struct snd_pcm_substream *substream)
{
struct hdmi_audio_infoframe ai = {
.type = 0x84,
.ver = 0x01,
.len = 0x0a,
.CC02_CT47 = substream->runtime->channels - 1,
};
hdmi_setup_channel_allocation(codec, &ai);
hdmi_fill_audio_infoframe(codec, &ai);
}
/*
* Unsolicited events
*/
static void hdmi_intrinsic_event(struct hda_codec *codec, unsigned int res)
{
int pind = !!(res & AC_UNSOL_RES_PD);
int eldv = !!(res & AC_UNSOL_RES_ELDV);
printk(KERN_INFO "HDMI intrinsic event: PD=%d ELDV=%d\n", pind, eldv);
if (pind && eldv) {
hdmi_parse_eld(codec);
/* TODO: do real things about ELD */
}
}
static void hdmi_non_intrinsic_event(struct hda_codec *codec, unsigned int res)
{
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 non-intrinsic event: "
"SUBTAG=0x%x CP_STATE=%d CP_READY=%d\n",
subtag,
cp_state,
cp_ready);
/* who cares? */
if (cp_state)
;
if (cp_ready)
;
}
static void intel_hdmi_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;
if (tag != INTEL_HDMI_EVENT_TAG) {
snd_printd(KERN_INFO
"Unexpected HDMI unsolicited event tag 0x%x\n",
tag);
return;
}
if (subtag == 0)
hdmi_intrinsic_event(codec, res);
else
hdmi_non_intrinsic_event(codec, res);
}
/*
* Callbacks
*/
static int intel_hdmi_playback_pcm_open(struct hda_pcm_stream *hinfo,
struct hda_codec *codec,
struct snd_pcm_substream *substream)
{
struct intel_hdmi_spec *spec = codec->spec;
return snd_hda_multi_out_dig_open(codec, &spec->multiout);
}
static int intel_hdmi_playback_pcm_close(struct hda_pcm_stream *hinfo,
struct hda_codec *codec,
struct snd_pcm_substream *substream)
{
struct intel_hdmi_spec *spec = codec->spec;
hdmi_disable_output(codec);
return snd_hda_multi_out_dig_close(codec, &spec->multiout);
}
static int intel_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)
{
struct intel_hdmi_spec *spec = codec->spec;
snd_hda_multi_out_dig_prepare(codec, &spec->multiout, stream_tag,
format, substream);
hdmi_set_channel_count(codec, substream->runtime->channels);
/* wfg: channel mapping not supported by DEVCTG */
hdmi_setup_channel_mapping(codec);
hdmi_setup_audio_infoframe(codec, substream);
hdmi_enable_output(codec);
return 0;
}
static struct hda_pcm_stream intel_hdmi_pcm_playback = {
.substreams = 1,
.channels_min = 2,
.channels_max = 8,
.nid = CVT_NID, /* NID to query formats and rates and setup streams */
.ops = {
.open = intel_hdmi_playback_pcm_open,
.close = intel_hdmi_playback_pcm_close,
.prepare = intel_hdmi_playback_pcm_prepare
},
};
static int intel_hdmi_build_pcms(struct hda_codec *codec)
{
struct intel_hdmi_spec *spec = codec->spec;
struct hda_pcm *info = &spec->pcm_rec;
codec->num_pcms = 1;
codec->pcm_info = info;
info->name = "INTEL HDMI";
info->pcm_type = HDA_PCM_TYPE_HDMI;
info->stream[SNDRV_PCM_STREAM_PLAYBACK] = intel_hdmi_pcm_playback;
return 0;
}
static int intel_hdmi_build_controls(struct hda_codec *codec)
{
struct intel_hdmi_spec *spec = codec->spec;
int err;
err = snd_hda_create_spdif_out_ctls(codec, spec->multiout.dig_out_nid);
if (err < 0)
return err;
return 0;
}
static int intel_hdmi_init(struct hda_codec *codec)
{
/* disable audio output as early as possible */
hdmi_disable_output(codec);
snd_hda_sequence_write(codec, unsolicited_response_verb);
return 0;
}
static void intel_hdmi_free(struct hda_codec *codec)
{
kfree(codec->spec);
}
static struct hda_codec_ops intel_hdmi_patch_ops = {
.init = intel_hdmi_init,
.free = intel_hdmi_free,
.build_pcms = intel_hdmi_build_pcms,
.build_controls = intel_hdmi_build_controls,
.unsol_event = intel_hdmi_unsol_event,
};
static int patch_intel_hdmi(struct hda_codec *codec)
{
struct intel_hdmi_spec *spec;
spec = kzalloc(sizeof(*spec), GFP_KERNEL);
if (spec == NULL)
return -ENOMEM;
spec->multiout.num_dacs = 0; /* no analog */
spec->multiout.max_channels = 8;
spec->multiout.dig_out_nid = CVT_NID;
codec->spec = spec;
codec->patch_ops = intel_hdmi_patch_ops;
snd_hda_eld_proc_new(codec, &spec->sink);
init_channel_allocations();
return 0;
}
struct hda_codec_preset snd_hda_preset_intelhdmi[] = {
{ .id = 0x808629fb, .name = "INTEL G45 DEVCL", .patch = patch_intel_hdmi },
{ .id = 0x80862801, .name = "INTEL G45 DEVBLC", .patch = patch_intel_hdmi },
{ .id = 0x80862802, .name = "INTEL G45 DEVCTG", .patch = patch_intel_hdmi },
{ .id = 0x80862803, .name = "INTEL G45 DEVELK", .patch = patch_intel_hdmi },
{ .id = 0x10951392, .name = "SiI1392 HDMI", .patch = patch_intel_hdmi },
{} /* terminator */
};
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