/*
*
* 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"
#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 hdmi_eld sink_eld;
};
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 "HDMI channel count: expect %d, get %d\n",
chs, hdmi_get_channel_count(codec));
}
static void hdmi_debug_channel_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 "HDMI: ASP channel %d => slot %d\n",
slot >> 4, slot & 0x7);
}
#endif
}
static void hdmi_parse_eld(struct hda_codec *codec)
{
struct intel_hdmi_spec *spec = codec->spec;
struct hdmi_eld *eld = &spec->sink_eld;
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 "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)
{
#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_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 hdmi_eld *eld = &spec->sink_eld;
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;
break;
}
}
snd_print_channel_allocation(eld->spk_alloc, buf, sizeof(buf));
snd_printdd(KERN_INFO
"HDMI: select CA 0x%x for %d-channel allocation: %s\n",
ai->CA, channels, buf);
return ai->CA;
}
static void hdmi_setup_channel_mapping(struct hda_codec *codec,
struct hdmi_audio_infoframe *ai)
{
if (!ai->CA)
return;
/*
* TODO: adjust channel mapping if necessary
* ALSA sequence is front/surr/clfe/side?
*/
snd_hda_sequence_write(codec, def_chan_map);
hdmi_debug_channel_mapping(codec);
}
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_setup_channel_mapping(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 hot plug event: Presence_Detect=%d ELD_Valid=%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 content protection event: SUBTAG=0x%x CP_STATE=%d CP_READY=%d\n",
subtag,
cp_state,
cp_ready);
/* TODO */
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 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);
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)
{
struct intel_hdmi_spec *spec = codec->spec;
snd_hda_eld_proc_free(codec, &spec->sink_eld);
kfree(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_eld);
init_channel_allocations();
return 0;
}
static 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 */
};
MODULE_ALIAS("snd-hda-codec-id:808629fb");
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:10951392");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Intel HDMI HD-audio codec");
static struct hda_codec_preset_list intel_list = {
.preset = snd_hda_preset_intelhdmi,
.owner = THIS_MODULE,
};
static int __init patch_intelhdmi_init(void)
{
return snd_hda_add_codec_preset(&intel_list);
}
static void __exit patch_intelhdmi_exit(void)
{
snd_hda_delete_codec_preset(&intel_list);
}
module_init(patch_intelhdmi_init)
module_exit(patch_intelhdmi_exit)
