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linux-pinenote/sound/pci/hda/patch_hdmi.c
Wu Fengguang 3eaead579e ALSA: hdmi - dont fail on extra nodes 
The number of HDMI nodes is expected to go up in future.
So don't fail hard on seeing extra converter/pin nodes.

We can still operate safely on the nodes within
MAX_HDMI_CVTS/MAX_HDMI_PINS.

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2010-05-17 08:12:13 +02:00

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/*
*
* patch_hdmi.c - routines for HDMI/DisplayPort codecs
*
* Copyright(c) 2008-2010 Intel Corporation. All rights reserved.
*
* 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.
*/
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];
/*
* nvhdmi specific
*/
struct hda_multi_out multiout;
unsigned int codec_type;
};
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;
};
/*
* 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, 0x34, 0x43, 0xf2, 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_setup_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_setup_channel_allocation(struct hda_codec *codec, hda_nid_t nid,
struct hdmi_audio_infoframe *ai)
{
struct hdmi_spec *spec = codec->spec;
struct hdmi_eld *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 (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) {
ai->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",
ai->CA, channels, buf);
return ai->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,
struct hdmi_audio_infoframe *ai)
{
int i;
int ca = ai->CA;
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 *ai)
{
u8 *bytes = (u8 *)ai;
u8 sum = 0;
int i;
ai->checksum = 0;
for (i = 0; i < sizeof(*ai); i++)
sum += bytes[i];
ai->checksum = -sum;
}
static void hdmi_fill_audio_infoframe(struct hda_codec *codec,
hda_nid_t pin_nid,
struct hdmi_audio_infoframe *ai)
{
u8 *bytes = (u8 *)ai;
int i;
hdmi_debug_dip_size(codec, pin_nid);
hdmi_clear_dip_buffers(codec, pin_nid); /* be paranoid */
hdmi_checksum_audio_infoframe(ai);
hdmi_set_dip_index(codec, pin_nid, 0x0, 0x0);
for (i = 0; i < sizeof(*ai); i++)
hdmi_write_dip_byte(codec, pin_nid, bytes[i]);
}
static bool hdmi_infoframe_uptodate(struct hda_codec *codec, hda_nid_t pin_nid,
struct hdmi_audio_infoframe *ai)
{
u8 *bytes = (u8 *)ai;
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 < sizeof(*ai); i++) {
val = snd_hda_codec_read(codec, pin_nid, 0,
AC_VERB_GET_HDMI_DIP_DATA, 0);
if (val != bytes[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 i;
struct hdmi_audio_infoframe ai = {
.type = 0x84,
.ver = 0x01,
.len = 0x0a,
.CC02_CT47 = substream->runtime->channels - 1,
};
hdmi_setup_channel_allocation(codec, nid, &ai);
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];
if (!hdmi_infoframe_uptodate(codec, pin_nid, &ai)) {
snd_printdd("hdmi_setup_audio_infoframe: "
"cvt=%d pin=%d channels=%d\n",
nid, pin_nid,
substream->runtime->channels);
hdmi_setup_channel_mapping(codec, pin_nid, &ai);
hdmi_stop_infoframe_trans(codec, pin_nid);
hdmi_fill_audio_infoframe(codec, pin_nid, &ai);
hdmi_start_infoframe_trans(codec, pin_nid);
}
}
}
/*
* Unsolicited events
*/
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;
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
*/
static void hdmi_setup_stream(struct hda_codec *codec, hda_nid_t nid,
u32 stream_tag, int format)
{
int tag;
int fmt;
tag = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONV, 0) >> 4;
fmt = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_STREAM_FORMAT, 0);
snd_printdd("hdmi_setup_stream: "
"NID=0x%x, %sstream=0x%x, %sformat=0x%x\n",
nid,
tag == stream_tag ? "" : "new-",
stream_tag,
fmt == format ? "" : "new-",
format);
if (tag != stream_tag)
snd_hda_codec_write(codec, nid, 0,
AC_VERB_SET_CHANNEL_STREAMID,
stream_tag << 4);
if (fmt != format)
snd_hda_codec_write(codec, nid, 0,
AC_VERB_SET_STREAM_FORMAT, format);
}
/*
* 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++;
/*
* It is assumed that converter nodes come first in the node list and
* hence have been registered and usable now.
*/
return hdmi_read_pin_conn(codec, pin_nid);
}
static int hdmi_add_cvt(struct hda_codec *codec, hda_nid_t nid)
{
struct hdmi_spec *spec = codec->spec;
if (spec->num_cvts >= MAX_HDMI_CVTS) {
snd_printk(KERN_WARNING
"HDMI: no space for converter %d\n", nid);
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;
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;
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:
hdmi_add_cvt(codec, nid);
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;
hdmi_add_pin(codec, nid);
break;
}
}
/*
* 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;
}
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