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android_kernel_xiaomi_sm8350/sound/pci/hda/patch_intelhdmi.c
Wu Fengguang 1ffc69a6e8 ALSA: intelhdmi - channel mapping applies to Pin 
HDA036-A specifies that the Audio Sample Packet (ASP) Channel Mapping
verbs apply to Digital Display Pin Complex instead of Converter.

With this fix, channel mapping is working as expected for IbexPeak.

Thanks to Marcin for pointing this out!

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-12-11 07:56:10 +01:00

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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"
/*
* 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 INTEL_HDMI_CVTS 2
#define INTEL_HDMI_PINS 3
static char *intel_hdmi_pcm_names[INTEL_HDMI_CVTS] = {
"INTEL HDMI 0",
"INTEL HDMI 1",
};
struct intel_hdmi_spec {
int num_cvts;
int num_pins;
hda_nid_t cvt[INTEL_HDMI_CVTS+1]; /* audio sources */
hda_nid_t pin[INTEL_HDMI_PINS+1]; /* audio sinks */
/*
* source connection for each pin
*/
hda_nid_t pin_cvt[INTEL_HDMI_PINS+1];
/*
* HDMI sink attached to each pin
*/
struct hdmi_eld sink_eld[INTEL_HDMI_PINS];
/*
* export one pcm per pipe
*/
struct hda_pcm pcm_rec[INTEL_HDMI_CVTS];
};
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 } },
};
/*
* HDA/HDMI auto parsing
*/
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 int intel_hdmi_read_pin_conn(struct hda_codec *codec, hda_nid_t pin_nid)
{
struct intel_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_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);
}
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 intel_hdmi_add_pin(struct hda_codec *codec, hda_nid_t pin_nid)
{
struct intel_hdmi_spec *spec = codec->spec;
if (spec->num_pins >= INTEL_HDMI_PINS) {
snd_printk(KERN_WARNING
"HDMI: no space for pin %d \n", pin_nid);
return -EINVAL;
}
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 intel_hdmi_read_pin_conn(codec, pin_nid);
}
static int intel_hdmi_add_cvt(struct hda_codec *codec, hda_nid_t nid)
{
struct intel_hdmi_spec *spec = codec->spec;
if (spec->num_cvts >= INTEL_HDMI_CVTS) {
snd_printk(KERN_WARNING
"HDMI: no space for converter %d \n", nid);
return -EINVAL;
}
spec->cvt[spec->num_cvts] = nid;
spec->num_cvts++;
return 0;
}
static int intel_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:
if (intel_hdmi_add_cvt(codec, nid) < 0)
return -EINVAL;
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;
if (intel_hdmi_add_pin(codec, nid) < 0)
return -EINVAL;
break;
}
}
return 0;
}
/*
* HDMI routines
*/
#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);
}
/*
* 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 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);
}
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
}
/*
* Audio InfoFrame routines
*/
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]);
}
/*
* 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 intel_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(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,
hda_nid_t pin_nid,
struct hdmi_audio_infoframe *ai)
{
int i;
if (!ai->CA)
return;
/*
* TODO: adjust channel mapping if necessary
* ALSA sequence is front/surr/clfe/side?
*/
for (i = 0; i < 8; i++)
snd_hda_codec_write(codec, pin_nid, 0,
AC_VERB_SET_HDMI_CHAN_SLOT,
(i << 4) | i);
hdmi_debug_channel_mapping(codec, pin_nid);
}
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 intel_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)) {
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 intel_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 intel_hdmi_unsol_event(struct hda_codec *codec, unsigned int res)
{
struct intel_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);
}
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)
{
hdmi_set_channel_count(codec, hinfo->nid,
substream->runtime->channels);
hdmi_setup_audio_infoframe(codec, hinfo->nid, substream);
hdmi_setup_stream(codec, hinfo->nid, stream_tag, format);
return 0;
}
static int intel_hdmi_playback_pcm_cleanup(struct hda_pcm_stream *hinfo,
struct hda_codec *codec,
struct snd_pcm_substream *substream)
{
return 0;
}
static struct hda_pcm_stream intel_hdmi_pcm_playback = {
.substreams = 1,
.channels_min = 2,
.ops = {
.prepare = intel_hdmi_playback_pcm_prepare,
.cleanup = intel_hdmi_playback_pcm_cleanup,
},
};
static int intel_hdmi_build_pcms(struct hda_codec *codec)
{
struct intel_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;
chans = get_wcaps(codec, spec->cvt[i]);
chans = get_wcaps_channels(chans);
info->name = intel_hdmi_pcm_names[i];
info->pcm_type = HDA_PCM_TYPE_HDMI;
info->stream[SNDRV_PCM_STREAM_PLAYBACK] =
intel_hdmi_pcm_playback;
info->stream[SNDRV_PCM_STREAM_PLAYBACK].nid = spec->cvt[i];
info->stream[SNDRV_PCM_STREAM_PLAYBACK].channels_max = chans;
}
return 0;
}
static int intel_hdmi_build_controls(struct hda_codec *codec)
{
struct intel_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 intel_hdmi_init(struct hda_codec *codec)
{
struct intel_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 intel_hdmi_free(struct hda_codec *codec)
{
struct intel_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 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;
int i;
spec = kzalloc(sizeof(*spec), GFP_KERNEL);
if (spec == NULL)
return -ENOMEM;
codec->spec = spec;
if (intel_hdmi_parse_codec(codec) < 0) {
codec->spec = NULL;
kfree(spec);
return -EINVAL;
}
codec->patch_ops = intel_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;
}
static struct hda_codec_preset snd_hda_preset_intelhdmi[] = {
{ .id = 0x808629fb, .name = "G45 DEVCL", .patch = patch_intel_hdmi },
{ .id = 0x80862801, .name = "G45 DEVBLC", .patch = patch_intel_hdmi },
{ .id = 0x80862802, .name = "G45 DEVCTG", .patch = patch_intel_hdmi },
{ .id = 0x80862803, .name = "G45 DEVELK", .patch = patch_intel_hdmi },
{ .id = 0x80862804, .name = "G45 DEVIBX", .patch = patch_intel_hdmi },
{ .id = 0x80860054, .name = "Q57 DEVIBX", .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:80862804");
MODULE_ALIAS("snd-hda-codec-id:80860054");
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)
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