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patch_hdmi.c
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/*
*
* 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 <[email protected]>
*
* Authors:
* Wu Fengguang <[email protected]>
*
* Maintained by:
* Wu Fengguang <[email protected]>
*
* 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/module.h>
#include <sound/core.h>
#include <sound/jack.h>
#include "hda_codec.h"
#include "hda_local.h"
#include "hda_jack.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 N 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 8
#define MAX_HDMI_PINS 8
struct hdmi_spec_per_cvt {
hda_nid_t cvt_nid;
int assigned;
unsigned int channels_min;
unsigned int channels_max;
u32 rates;
u64 formats;
unsigned int maxbps;
};
struct hdmi_spec_per_pin {
hda_nid_t pin_nid;
int num_mux_nids;
hda_nid_t mux_nids[HDA_MAX_CONNECTIONS];
struct hda_codec *codec;
struct hdmi_eld sink_eld;
struct delayed_work work;
int repoll_count;
};
struct hdmi_spec {
int num_cvts;
struct hdmi_spec_per_cvt cvts[MAX_HDMI_CVTS];
int num_pins;
struct hdmi_spec_per_pin pins[MAX_HDMI_PINS];
struct hda_pcm pcm_rec[MAX_HDMI_PINS];
/*
* Non-generic ATI/NVIDIA specific
*/
struct hda_multi_out multiout;
const struct hda_pcm_stream *pcm_playback;
};
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;
};
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;
};
union audio_infoframe {
struct hdmi_audio_infoframe hdmi;
struct dp_audio_infoframe dp;
u8 bytes[0];
};
/*
* 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, 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 pin_nid_to_pin_index(struct hdmi_spec *spec, hda_nid_t pin_nid)
{
int pin_idx;
for (pin_idx = 0; pin_idx < spec->num_pins; pin_idx++)
if (spec->pins[pin_idx].pin_nid == pin_nid)
return pin_idx;
snd_printk(KERN_WARNING "HDMI: pin nid %d not registered\n", pin_nid);
return -EINVAL;
}
static int hinfo_to_pin_index(struct hdmi_spec *spec,
struct hda_pcm_stream *hinfo)
{
int pin_idx;
for (pin_idx = 0; pin_idx < spec->num_pins; pin_idx++)
if (&spec->pcm_rec[pin_idx].stream[0] == hinfo)
return pin_idx;
snd_printk(KERN_WARNING "HDMI: hinfo %p not registered\n", hinfo);
return -EINVAL;
}
static int cvt_nid_to_cvt_index(struct hdmi_spec *spec, hda_nid_t cvt_nid)
{
int cvt_idx;
for (cvt_idx = 0; cvt_idx < spec->num_cvts; cvt_idx++)
if (spec->cvts[cvt_idx].cvt_nid == cvt_nid)
return cvt_idx;
snd_printk(KERN_WARNING "HDMI: cvt nid %d not registered\n", cvt_nid);
return -EINVAL;
}
static int hdmi_eld_ctl_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
struct hdmi_spec *spec;
int pin_idx;
spec = codec->spec;
uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
pin_idx = kcontrol->private_value;
uinfo->count = spec->pins[pin_idx].sink_eld.eld_size;
return 0;
}
static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
struct hdmi_spec *spec;
int pin_idx;
spec = codec->spec;
pin_idx = kcontrol->private_value;
memcpy(ucontrol->value.bytes.data,
spec->pins[pin_idx].sink_eld.eld_buffer, ELD_MAX_SIZE);
return 0;
}
static struct snd_kcontrol_new eld_bytes_ctl = {
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
.name = "ELD",
.info = hdmi_eld_ctl_info,
.get = hdmi_eld_ctl_get,
};
static int hdmi_create_eld_ctl(struct hda_codec *codec, int pin_idx,
int device)
{
struct snd_kcontrol *kctl;
struct hdmi_spec *spec = codec->spec;
int err;
kctl = snd_ctl_new1(&eld_bytes_ctl, codec);
if (!kctl)
return -ENOMEM;
kctl->private_value = pin_idx;
kctl->id.device = device;
err = snd_hda_ctl_add(codec, spec->pins[pin_idx].pin_nid, kctl);
if (err < 0)
return err;
return 0;
}
#ifdef BE_PARANOID
static void hdmi_get_dip_index(struct hda_codec *codec, hda_nid_t pin_nid,
int *packet_index, int *byte_index)
{
int val;
val = snd_hda_codec_read(codec, pin_nid, 0,
AC_VERB_GET_HDMI_DIP_INDEX, 0);
*packet_index = val >> 5;
*byte_index = val & 0x1f;
}
#endif
static void hdmi_set_dip_index(struct hda_codec *codec, hda_nid_t pin_nid,
int packet_index, int byte_index)
{
int val;
val = (packet_index << 5) | (byte_index & 0x1f);
snd_hda_codec_write(codec, pin_nid, 0, AC_VERB_SET_HDMI_DIP_INDEX, val);
}
static void hdmi_write_dip_byte(struct hda_codec *codec, hda_nid_t pin_nid,
unsigned char val)
{
snd_hda_codec_write(codec, pin_nid, 0, AC_VERB_SET_HDMI_DIP_DATA, val);
}
static void hdmi_init_pin(struct hda_codec *codec, hda_nid_t pin_nid)
{
/* 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);
/* Disable pin out until stream is active*/
snd_hda_codec_write(codec, pin_nid, 0,
AC_VERB_SET_PIN_WIDGET_CONTROL, 0);
}
static int hdmi_get_channel_count(struct hda_codec *codec, hda_nid_t cvt_nid)
{
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,
hda_nid_t cvt_nid, int chs)
{
if (chs != hdmi_get_channel_count(codec, cvt_nid))
snd_hda_codec_write(codec, cvt_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 hdmi_eld *eld, int channels)
{
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;
/*
* 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, int pin_idx,
struct snd_pcm_substream *substream)
{
struct hdmi_spec *spec = codec->spec;
struct hdmi_spec_per_pin *per_pin = &spec->pins[pin_idx];
hda_nid_t pin_nid = per_pin->pin_nid;
int channels = substream->runtime->channels;
struct hdmi_eld *eld;
int ca;
union audio_infoframe ai;
eld = &spec->pins[pin_idx].sink_eld;
if (!eld->monitor_present)
return;
ca = hdmi_channel_allocation(eld, channels);
memset(&ai, 0, sizeof(ai));
if (eld->conn_type == 0) { /* HDMI */
struct hdmi_audio_infoframe *hdmi_ai = &ai.hdmi;
hdmi_ai->type = 0x84;
hdmi_ai->ver = 0x01;
hdmi_ai->len = 0x0a;
hdmi_ai->CC02_CT47 = channels - 1;
hdmi_ai->CA = ca;
hdmi_checksum_audio_infoframe(hdmi_ai);
} else if (eld->conn_type == 1) { /* DisplayPort */
struct dp_audio_infoframe *dp_ai = &ai.dp;
dp_ai->type = 0x84;
dp_ai->len = 0x1b;
dp_ai->ver = 0x11 << 2;
dp_ai->CC02_CT47 = channels - 1;
dp_ai->CA = ca;
} else {
snd_printd("HDMI: unknown connection type at pin %d\n",
pin_nid);
return;
}
/*
* sizeof(ai) is used instead of sizeof(*hdmi_ai) or
* sizeof(*dp_ai) to avoid partial match/update problems when
* the user switches between HDMI/DP monitors.
*/
if (!hdmi_infoframe_uptodate(codec, pin_nid, ai.bytes,
sizeof(ai))) {
snd_printdd("hdmi_setup_audio_infoframe: "
"pin=%d channels=%d\n",
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.bytes, sizeof(ai));
hdmi_start_infoframe_trans(codec, pin_nid);
}
}
/*
* Unsolicited events
*/
static void hdmi_present_sense(struct hdmi_spec_per_pin *per_pin, int repoll);
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 pin_nid;
int pd = !!(res & AC_UNSOL_RES_PD);
int eldv = !!(res & AC_UNSOL_RES_ELDV);
int pin_idx;
struct hda_jack_tbl *jack;
jack = snd_hda_jack_tbl_get_from_tag(codec, tag);
if (!jack)
return;
pin_nid = jack->nid;
jack->jack_dirty = 1;
printk(KERN_INFO
"HDMI hot plug event: Codec=%d Pin=%d Presence_Detect=%d ELD_Valid=%d\n",
codec->addr, pin_nid, pd, eldv);
pin_idx = pin_nid_to_pin_index(spec, pin_nid);
if (pin_idx < 0)
return;
hdmi_present_sense(&spec->pins[pin_idx], 1);
snd_hda_jack_report_sync(codec);
}
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: CODEC=%d PIN=%d SUBTAG=0x%x CP_STATE=%d CP_READY=%d\n",
codec->addr,
tag,
subtag,
cp_state,
cp_ready);
/* TODO */
if (cp_state)
;
if (cp_ready)
;
}
static void 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 (!snd_hda_jack_tbl_get_from_tag(codec, 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
*/
/* 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 cvt_nid,
hda_nid_t pin_nid, u32 stream_tag, int format)
{
int pinctl;
int new_pinctl = 0;
if (snd_hda_query_pin_caps(codec, pin_nid) & AC_PINCAP_HBR) {
pinctl = snd_hda_codec_read(codec, pin_nid, 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",
pin_nid,
pinctl == new_pinctl ? "" : "new-",
new_pinctl);
if (pinctl != new_pinctl)
snd_hda_codec_write(codec, pin_nid, 0,
AC_VERB_SET_PIN_WIDGET_CONTROL,
new_pinctl);
}
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, cvt_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 snd_pcm_runtime *runtime = substream->runtime;
int pin_idx, cvt_idx, mux_idx = 0;
struct hdmi_spec_per_pin *per_pin;
struct hdmi_eld *eld;
struct hdmi_spec_per_cvt *per_cvt = NULL;
int pinctl;
/* Validate hinfo */
pin_idx = hinfo_to_pin_index(spec, hinfo);
if (snd_BUG_ON(pin_idx < 0))
return -EINVAL;
per_pin = &spec->pins[pin_idx];
eld = &per_pin->sink_eld;
/* Dynamically assign converter to stream */
for (cvt_idx = 0; cvt_idx < spec->num_cvts; cvt_idx++) {
per_cvt = &spec->cvts[cvt_idx];
/* Must not already be assigned */
if (per_cvt->assigned)
continue;
/* Must be in pin's mux's list of converters */
for (mux_idx = 0; mux_idx < per_pin->num_mux_nids; mux_idx++)
if (per_pin->mux_nids[mux_idx] == per_cvt->cvt_nid)
break;
/* Not in mux list */
if (mux_idx == per_pin->num_mux_nids)
continue;
break;
}
/* No free converters */
if (cvt_idx == spec->num_cvts)
return -ENODEV;
/* Claim converter */
per_cvt->assigned = 1;
hinfo->nid = per_cvt->cvt_nid;
snd_hda_codec_write(codec, per_pin->pin_nid, 0,
AC_VERB_SET_CONNECT_SEL,
mux_idx);
pinctl = snd_hda_codec_read(codec, per_pin->pin_nid, 0,
AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
snd_hda_codec_write(codec, per_pin->pin_nid, 0,
AC_VERB_SET_PIN_WIDGET_CONTROL,
pinctl | PIN_OUT);
snd_hda_spdif_ctls_assign(codec, pin_idx, per_cvt->cvt_nid);
/* Initially set the converter's capabilities */
hinfo->channels_min = per_cvt->channels_min;
hinfo->channels_max = per_cvt->channels_max;
hinfo->rates = per_cvt->rates;
hinfo->formats = per_cvt->formats;
hinfo->maxbps = per_cvt->maxbps;
/* Restrict capabilities by ELD if this isn't disabled */
if (!static_hdmi_pcm && eld->eld_valid) {
snd_hdmi_eld_update_pcm_info(eld, hinfo);
if (hinfo->channels_min > hinfo->channels_max ||
!hinfo->rates || !hinfo->formats)
return -ENODEV;
}
/* Store the updated parameters */
runtime->hw.channels_min = hinfo->channels_min;
runtime->hw.channels_max = hinfo->channels_max;
runtime->hw.formats = hinfo->formats;
runtime->hw.rates = hinfo->rates;
snd_pcm_hw_constraint_step(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_CHANNELS, 2);
return 0;
}
/*
* HDA/HDMI auto parsing
*/
static int hdmi_read_pin_conn(struct hda_codec *codec, int pin_idx)
{
struct hdmi_spec *spec = codec->spec;
struct hdmi_spec_per_pin *per_pin = &spec->pins[pin_idx];
hda_nid_t pin_nid = per_pin->pin_nid;
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;
}
per_pin->num_mux_nids = snd_hda_get_connections(codec, pin_nid,
per_pin->mux_nids,
HDA_MAX_CONNECTIONS);
return 0;
}
static void hdmi_present_sense(struct hdmi_spec_per_pin *per_pin, int repoll)
{
struct hda_codec *codec = per_pin->codec;
struct hdmi_eld *eld = &per_pin->sink_eld;
hda_nid_t pin_nid = per_pin->pin_nid;
/*
* Always execute a GetPinSense verb here, even when called from
* hdmi_intrinsic_event; for some NVIDIA HW, the unsolicited
* response's PD bit is not the real PD value, but indicates that
* the real PD value changed. An older version of the HD-audio
* specification worked this way. Hence, we just ignore the data in
* the unsolicited response to avoid custom WARs.
*/
int present = snd_hda_pin_sense(codec, pin_nid);
bool eld_valid = false;
memset(eld, 0, offsetof(struct hdmi_eld, eld_buffer));
eld->monitor_present = !!(present & AC_PINSENSE_PRESENCE);
if (eld->monitor_present)
eld_valid = !!(present & AC_PINSENSE_ELDV);
printk(KERN_INFO
"HDMI status: Codec=%d Pin=%d Presence_Detect=%d ELD_Valid=%d\n",
codec->addr, pin_nid, eld->monitor_present, eld_valid);
if (eld_valid) {
if (!snd_hdmi_get_eld(eld, codec, pin_nid))