/*
* hdac_hdmi.c - ASoc HDA-HDMI codec driver for Intel platforms
*
* Copyright (C) 2014-2015 Intel Corp
* Author: Samreen Nilofer <samreen.nilofer@intel.com>
* Subhransu S. Prusty <subhransu.s.prusty@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; version 2 of the License.
*
* 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.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <linux/hdmi.h>
#include <drm/drm_edid.h>
#include <sound/pcm_params.h>
#include <sound/jack.h>
#include <sound/soc.h>
#include <sound/hdaudio_ext.h>
#include <sound/hda_i915.h>
#include <sound/pcm_drm_eld.h>
#include <sound/hda_chmap.h>
#include "../../hda/local.h"
#include "hdac_hdmi.h"
#define NAME_SIZE 32
#define AMP_OUT_MUTE 0xb080
#define AMP_OUT_UNMUTE 0xb000
#define PIN_OUT (AC_PINCTL_OUT_EN)
#define HDA_MAX_CONNECTIONS 32
#define HDA_MAX_CVTS 3
#define ELD_MAX_SIZE 256
#define ELD_FIXED_BYTES 20
struct hdac_hdmi_cvt_params {
unsigned int channels_min;
unsigned int channels_max;
u32 rates;
u64 formats;
unsigned int maxbps;
};
struct hdac_hdmi_cvt {
struct list_head head;
hda_nid_t nid;
const char *name;
struct hdac_hdmi_cvt_params params;
};
/* Currently only spk_alloc, more to be added */
struct hdac_hdmi_parsed_eld {
u8 spk_alloc;
};
struct hdac_hdmi_eld {
bool monitor_present;
bool eld_valid;
int eld_size;
char eld_buffer[ELD_MAX_SIZE];
struct hdac_hdmi_parsed_eld info;
};
struct hdac_hdmi_pin {
struct list_head head;
hda_nid_t nid;
int num_mux_nids;
hda_nid_t mux_nids[HDA_MAX_CONNECTIONS];
struct hdac_hdmi_eld eld;
struct hdac_ext_device *edev;
int repoll_count;
struct delayed_work work;
struct mutex lock;
bool chmap_set;
unsigned char chmap[8]; /* ALSA API channel-map */
int channels; /* current number of channels */
};
struct hdac_hdmi_pcm {
struct list_head head;
int pcm_id;
struct hdac_hdmi_pin *pin;
struct hdac_hdmi_cvt *cvt;
struct snd_jack *jack;
};
struct hdac_hdmi_dai_pin_map {
int dai_id;
struct hdac_hdmi_pin *pin;
struct hdac_hdmi_cvt *cvt;
};
struct hdac_hdmi_priv {
struct hdac_hdmi_dai_pin_map dai_map[HDA_MAX_CVTS];
struct list_head pin_list;
struct list_head cvt_list;
struct list_head pcm_list;
int num_pin;
int num_cvt;
struct mutex pin_mutex;
struct hdac_chmap chmap;
};
static struct hdac_hdmi_pcm *get_hdmi_pcm_from_id(struct hdac_hdmi_priv *hdmi,
int pcm_idx)
{
struct hdac_hdmi_pcm *pcm;
list_for_each_entry(pcm, &hdmi->pcm_list, head) {
if (pcm->pcm_id == pcm_idx)
return pcm;
}
return NULL;
}
static inline struct hdac_ext_device *to_hda_ext_device(struct device *dev)
{
struct hdac_device *hdac = dev_to_hdac_dev(dev);
return to_ehdac_device(hdac);
}
static unsigned int sad_format(const u8 *sad)
{
return ((sad[0] >> 0x3) & 0x1f);
}
static unsigned int sad_sample_bits_lpcm(const u8 *sad)
{
return (sad[2] & 7);
}
static int hdac_hdmi_eld_limit_formats(struct snd_pcm_runtime *runtime,
void *eld)
{
u64 formats = SNDRV_PCM_FMTBIT_S16;
int i;
const u8 *sad, *eld_buf = eld;
sad = drm_eld_sad(eld_buf);
if (!sad)
goto format_constraint;
for (i = drm_eld_sad_count(eld_buf); i > 0; i--, sad += 3) {
if (sad_format(sad) == 1) { /* AUDIO_CODING_TYPE_LPCM */
/*
* the controller support 20 and 24 bits in 32 bit
* container so we set S32
*/
if (sad_sample_bits_lpcm(sad) & 0x6)
formats |= SNDRV_PCM_FMTBIT_S32;
}
}
format_constraint:
return snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT,
formats);
}
/* HDMI ELD routines */
static unsigned int hdac_hdmi_get_eld_data(struct hdac_device *codec,
hda_nid_t nid, int byte_index)
{
unsigned int val;
val = snd_hdac_codec_read(codec, nid, 0, AC_VERB_GET_HDMI_ELDD,
byte_index);
dev_dbg(&codec->dev, "HDMI: ELD data byte %d: 0x%x\n",
byte_index, val);
return val;
}
static int hdac_hdmi_get_eld_size(struct hdac_device *codec, hda_nid_t nid)
{
return snd_hdac_codec_read(codec, nid, 0, AC_VERB_GET_HDMI_DIP_SIZE,
AC_DIPSIZE_ELD_BUF);
}
/*
* This function queries the ELD size and ELD data and fills in the buffer
* passed by user
*/
static int hdac_hdmi_get_eld(struct hdac_device *codec, hda_nid_t nid,
unsigned char *buf, int *eld_size)
{
int i, size, ret = 0;
/*
* ELD size is initialized to zero in caller function. If no errors and
* ELD is valid, actual eld_size is assigned.
*/
size = hdac_hdmi_get_eld_size(codec, nid);
if (size < ELD_FIXED_BYTES || size > ELD_MAX_SIZE) {
dev_err(&codec->dev, "HDMI: invalid ELD buf size %d\n", size);
return -ERANGE;
}
/* set ELD buffer */
for (i = 0; i < size; i++) {
unsigned int val = hdac_hdmi_get_eld_data(codec, nid, i);
/*
* Graphics driver might be writing to ELD buffer right now.
* Just abort. The caller will repoll after a while.
*/
if (!(val & AC_ELDD_ELD_VALID)) {
dev_err(&codec->dev,
"HDMI: invalid ELD data byte %d\n", i);
ret = -EINVAL;
goto error;
}
val &= AC_ELDD_ELD_DATA;
/*
* The first byte cannot be zero. This can happen on some DVI
* connections. Some Intel chips may also need some 250ms delay
* to return non-zero ELD data, even when the graphics driver
* correctly writes ELD content before setting ELD_valid bit.
*/
if (!val && !i) {
dev_err(&codec->dev, "HDMI: 0 ELD data\n");
ret = -EINVAL;
goto error;
}
buf[i] = val;
}
*eld_size = size;
error:
return ret;
}
static int hdac_hdmi_setup_stream(struct hdac_ext_device *hdac,
hda_nid_t cvt_nid, hda_nid_t pin_nid,
u32 stream_tag, int format)
{
unsigned int val;
dev_dbg(&hdac->hdac.dev, "cvt nid %d pnid %d stream %d format 0x%x\n",
cvt_nid, pin_nid, stream_tag, format);
val = (stream_tag << 4);
snd_hdac_codec_write(&hdac->hdac, cvt_nid, 0,
AC_VERB_SET_CHANNEL_STREAMID, val);
snd_hdac_codec_write(&hdac->hdac, cvt_nid, 0,
AC_VERB_SET_STREAM_FORMAT, format);
return 0;
}
static void
hdac_hdmi_set_dip_index(struct hdac_ext_device *hdac, hda_nid_t pin_nid,
int packet_index, int byte_index)
{
int val;
val = (packet_index << 5) | (byte_index & 0x1f);
snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
AC_VERB_SET_HDMI_DIP_INDEX, val);
}
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;
};
static int hdac_hdmi_setup_audio_infoframe(struct hdac_ext_device *hdac,
hda_nid_t cvt_nid, hda_nid_t pin_nid)
{
uint8_t buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AUDIO_INFOFRAME_SIZE];
struct hdmi_audio_infoframe frame;
struct dp_audio_infoframe dp_ai;
struct hdac_hdmi_priv *hdmi = hdac->private_data;
struct hdac_hdmi_pin *pin;
u8 *dip;
int ret;
int i;
const u8 *eld_buf;
u8 conn_type;
int channels, ca;
list_for_each_entry(pin, &hdmi->pin_list, head) {
if (pin->nid == pin_nid)
break;
}
ca = snd_hdac_channel_allocation(&hdac->hdac, pin->eld.info.spk_alloc,
pin->channels, pin->chmap_set, true, pin->chmap);
channels = snd_hdac_get_active_channels(ca);
hdmi->chmap.ops.set_channel_count(&hdac->hdac, cvt_nid, channels);
snd_hdac_setup_channel_mapping(&hdmi->chmap, pin->nid, false, ca,
pin->channels, pin->chmap, pin->chmap_set);
eld_buf = pin->eld.eld_buffer;
conn_type = drm_eld_get_conn_type(eld_buf);
switch (conn_type) {
case DRM_ELD_CONN_TYPE_HDMI:
hdmi_audio_infoframe_init(&frame);
frame.channels = channels;
frame.channel_allocation = ca;
ret = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer));
if (ret < 0)
return ret;
break;
case DRM_ELD_CONN_TYPE_DP:
memset(&dp_ai, 0, sizeof(dp_ai));
dp_ai.type = 0x84;
dp_ai.len = 0x1b;
dp_ai.ver = 0x11 << 2;
dp_ai.CC02_CT47 = channels - 1;
dp_ai.CA = ca;
dip = (u8 *)&dp_ai;
break;
default:
dev_err(&hdac->hdac.dev, "Invalid connection type: %d\n",
conn_type);
return -EIO;
}
/* stop infoframe transmission */
hdac_hdmi_set_dip_index(hdac, pin_nid, 0x0, 0x0);
snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
AC_VERB_SET_HDMI_DIP_XMIT, AC_DIPXMIT_DISABLE);
/* Fill infoframe. Index auto-incremented */
hdac_hdmi_set_dip_index(hdac, pin_nid, 0x0, 0x0);
if (conn_type == DRM_ELD_CONN_TYPE_HDMI) {
for (i = 0; i < sizeof(buffer); i++)
snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
AC_VERB_SET_HDMI_DIP_DATA, buffer[i]);
} else {
for (i = 0; i < sizeof(dp_ai); i++)
snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
AC_VERB_SET_HDMI_DIP_DATA, dip[i]);
}
/* Start infoframe */
hdac_hdmi_set_dip_index(hdac, pin_nid, 0x0, 0x0);
snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
AC_VERB_SET_HDMI_DIP_XMIT, AC_DIPXMIT_BEST);
return 0;
}
static void hdac_hdmi_set_power_state(struct hdac_ext_device *edev,
struct hdac_hdmi_dai_pin_map *dai_map, unsigned int pwr_state)
{
/* Power up pin widget */
if (!snd_hdac_check_power_state(&edev->hdac, dai_map->pin->nid,
pwr_state))
snd_hdac_codec_write(&edev->hdac, dai_map->pin->nid, 0,
AC_VERB_SET_POWER_STATE, pwr_state);
/* Power up converter */
if (!snd_hdac_check_power_state(&edev->hdac, dai_map->cvt->nid,
pwr_state))
snd_hdac_codec_write(&edev->hdac, dai_map->cvt->nid, 0,
AC_VERB_SET_POWER_STATE, pwr_state);
}
static int hdac_hdmi_playback_prepare(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
struct hdac_hdmi_priv *hdmi = hdac->private_data;
struct hdac_hdmi_dai_pin_map *dai_map;
struct hdac_hdmi_pin *pin;
struct hdac_ext_dma_params *dd;
int ret;
dai_map = &hdmi->dai_map[dai->id];
pin = dai_map->pin;
dd = (struct hdac_ext_dma_params *)snd_soc_dai_get_dma_data(dai, substream);
dev_dbg(&hdac->hdac.dev, "stream tag from cpu dai %d format in cvt 0x%x\n",
dd->stream_tag, dd->format);
mutex_lock(&pin->lock);
pin->channels = substream->runtime->channels;
ret = hdac_hdmi_setup_audio_infoframe(hdac, dai_map->cvt->nid,
dai_map->pin->nid);
mutex_unlock(&pin->lock);
if (ret < 0)
return ret;
return hdac_hdmi_setup_stream(hdac, dai_map->cvt->nid,
dai_map->pin->nid, dd->stream_tag, dd->format);
}
static int hdac_hdmi_set_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hparams, struct snd_soc_dai *dai)
{
struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
struct hdac_hdmi_priv *hdmi = hdac->private_data;
struct hdac_hdmi_dai_pin_map *dai_map;
struct hdac_hdmi_pin *pin;
struct hdac_ext_dma_params *dd;
dai_map = &hdmi->dai_map[dai->id];
pin = dai_map->pin;
if (!pin)
return -ENODEV;
if ((!pin->eld.monitor_present) || (!pin->eld.eld_valid)) {
dev_err(&hdac->hdac.dev, "device is not configured for this pin: %d\n",
pin->nid);
return -ENODEV;
}
dd = snd_soc_dai_get_dma_data(dai, substream);
if (!dd) {
dd = kzalloc(sizeof(*dd), GFP_KERNEL);
if (!dd)
return -ENOMEM;
}
dd->format = snd_hdac_calc_stream_format(params_rate(hparams),
params_channels(hparams), params_format(hparams),
24, 0);
snd_soc_dai_set_dma_data(dai, substream, (void *)dd);
return 0;
}
static int hdac_hdmi_playback_cleanup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct hdac_ext_device *edev = snd_soc_dai_get_drvdata(dai);
struct hdac_ext_dma_params *dd;
struct hdac_hdmi_priv *hdmi = edev->private_data;
struct hdac_hdmi_dai_pin_map *dai_map;
dai_map = &hdmi->dai_map[dai->id];
dd = (struct hdac_ext_dma_params *)snd_soc_dai_get_dma_data(dai, substream);
if (dd) {
snd_soc_dai_set_dma_data(dai, substream, NULL);
kfree(dd);
}
return 0;
}
static void hdac_hdmi_enable_cvt(struct hdac_ext_device *edev,
struct hdac_hdmi_dai_pin_map *dai_map)
{
/* Enable transmission */
snd_hdac_codec_write(&edev->hdac, dai_map->cvt->nid, 0,
AC_VERB_SET_DIGI_CONVERT_1, 1);
/* Category Code (CC) to zero */
snd_hdac_codec_write(&edev->hdac, dai_map->cvt->nid, 0,
AC_VERB_SET_DIGI_CONVERT_2, 0);
}
static int hdac_hdmi_enable_pin(struct hdac_ext_device *hdac,
struct hdac_hdmi_dai_pin_map *dai_map)
{
int mux_idx;
struct hdac_hdmi_pin *pin = dai_map->pin;
for (mux_idx = 0; mux_idx < pin->num_mux_nids; mux_idx++) {
if (pin->mux_nids[mux_idx] == dai_map->cvt->nid) {
snd_hdac_codec_write(&hdac->hdac, pin->nid, 0,
AC_VERB_SET_CONNECT_SEL, mux_idx);
break;
}
}
if (mux_idx == pin->num_mux_nids)
return -EIO;
/* Enable out path for this pin widget */
snd_hdac_codec_write(&hdac->hdac, pin->nid, 0,
AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT);
hdac_hdmi_set_power_state(hdac, dai_map, AC_PWRST_D0);
snd_hdac_codec_write(&hdac->hdac, pin->nid, 0,
AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE);
return 0;
}
static int hdac_hdmi_query_pin_connlist(struct hdac_ext_device *hdac,
struct hdac_hdmi_pin *pin)
{
if (!(get_wcaps(&hdac->hdac, pin->nid) & AC_WCAP_CONN_LIST)) {
dev_warn(&hdac->hdac.dev,
"HDMI: pin %d wcaps %#x does not support connection list\n",
pin->nid, get_wcaps(&hdac->hdac, pin->nid));
return -EINVAL;
}
pin->num_mux_nids = snd_hdac_get_connections(&hdac->hdac, pin->nid,
pin->mux_nids, HDA_MAX_CONNECTIONS);
if (pin->num_mux_nids == 0)
dev_warn(&hdac->hdac.dev, "No connections found for pin: %d\n",
pin->nid);
dev_dbg(&hdac->hdac.dev, "num_mux_nids %d for pin: %d\n",
pin->num_mux_nids, pin->nid);
return pin->num_mux_nids;
}
/*
* Query pcm list and return pin widget to which stream is routed.
*
* Also query connection list of the pin, to validate the cvt to pin map.
*
* Same stream rendering to multiple pins simultaneously can be done
* possibly, but not supported for now in driver. So return the first pin
* connected.
*/
static struct hdac_hdmi_pin *hdac_hdmi_get_pin_from_cvt(
struct hdac_ext_device *edev,
struct hdac_hdmi_priv *hdmi,
struct hdac_hdmi_cvt *cvt)
{
struct hdac_hdmi_pcm *pcm;
struct hdac_hdmi_pin *pin = NULL;
int ret, i;
list_for_each_entry(pcm, &hdmi->pcm_list, head) {
if (pcm->cvt == cvt) {
pin = pcm->pin;
break;
}
}
if (pin) {
ret = hdac_hdmi_query_pin_connlist(edev, pin);
if (ret < 0)
return NULL;
for (i = 0; i < pin->num_mux_nids; i++) {
if (pin->mux_nids[i] == cvt->nid)
return pin;
}
}
return NULL;
}
/*
* This tries to get a valid pin and set the HW constraints based on the
* ELD. Even if a valid pin is not found return success so that device open
* doesn't fail.
*/
static int hdac_hdmi_pcm_open(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
struct hdac_hdmi_priv *hdmi = hdac->private_data;
struct hdac_hdmi_dai_pin_map *dai_map;
struct hdac_hdmi_cvt *cvt;
struct hdac_hdmi_pin *pin;
int ret;
dai_map = &hdmi->dai_map[dai->id];
cvt = dai_map->cvt;
pin = hdac_hdmi_get_pin_from_cvt(hdac, hdmi, cvt);
/*
* To make PA and other userland happy.
* userland scans devices so returning error does not help.
*/
if (!pin)
return 0;
if ((!pin->eld.monitor_present) ||
(!pin->eld.eld_valid)) {
dev_warn(&hdac->hdac.dev,
"Failed: monitor present? %d ELD valid?: %d for pin: %d\n",
pin->eld.monitor_present, pin->eld.eld_valid, pin->nid);
return 0;
}
dai_map->pin = pin;
hdac_hdmi_enable_cvt(hdac, dai_map);
ret = hdac_hdmi_enable_pin(hdac, dai_map);
if (ret < 0)
return ret;
ret = hdac_hdmi_eld_limit_formats(substream->runtime,
pin->eld.eld_buffer);
if (ret < 0)
return ret;
return snd_pcm_hw_constraint_eld(substream->runtime,
pin->eld.eld_buffer);
}
static int hdac_hdmi_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *dai)
{
struct hdac_hdmi_dai_pin_map *dai_map;
struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
struct hdac_hdmi_priv *hdmi = hdac->private_data;
int ret;
dai_map = &hdmi->dai_map[dai->id];
if (cmd == SNDRV_PCM_TRIGGER_RESUME) {
ret = hdac_hdmi_enable_pin(hdac, dai_map);
if (ret < 0)
return ret;
return hdac_hdmi_playback_prepare(substream, dai);
}
return 0;
}
static void hdac_hdmi_pcm_close(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
struct hdac_hdmi_priv *hdmi = hdac->private_data;
struct hdac_hdmi_dai_pin_map *dai_map;
dai_map = &hdmi->dai_map[dai->id];
if (dai_map->pin) {
snd_hdac_codec_write(&hdac->hdac, dai_map->cvt->nid, 0,
AC_VERB_SET_CHANNEL_STREAMID, 0);
snd_hdac_codec_write(&hdac->hdac, dai_map->cvt->nid, 0,
AC_VERB_SET_STREAM_FORMAT, 0);
hdac_hdmi_set_power_state(hdac, dai_map, AC_PWRST_D3);
snd_hdac_codec_write(&hdac->hdac, dai_map->pin->nid, 0,
AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE);
mutex_lock(&dai_map->pin->lock);
dai_map->pin->chmap_set = false;
memset(dai_map->pin->chmap, 0, sizeof(dai_map->pin->chmap));
dai_map->pin->channels = 0;
mutex_unlock(&dai_map->pin->lock);
dai_map->pin = NULL;
}
}
static int
hdac_hdmi_query_cvt_params(struct hdac_device *hdac, struct hdac_hdmi_cvt *cvt)
{
unsigned int chans;
struct hdac_ext_device *edev = to_ehdac_device(hdac);
struct hdac_hdmi_priv *hdmi = edev->private_data;
int err;
chans = get_wcaps(hdac, cvt->nid);
chans = get_wcaps_channels(chans);
cvt->params.channels_min = 2;
cvt->params.channels_max = chans;
if (chans > hdmi->chmap.channels_max)
hdmi->chmap.channels_max = chans;
err = snd_hdac_query_supported_pcm(hdac, cvt->nid,
&cvt->params.rates,
&cvt->params.formats,
&cvt->params.maxbps);
if (err < 0)
dev_err(&hdac->dev,
"Failed to query pcm params for nid %d: %d\n",
cvt->nid, err);
return err;
}
static int hdac_hdmi_fill_widget_info(struct device *dev,
struct snd_soc_dapm_widget *w,
enum snd_soc_dapm_type id, void *priv,
const char *wname, const char *stream,
struct snd_kcontrol_new *wc, int numkc)
{
w->id = id;
w->name = devm_kstrdup(dev, wname, GFP_KERNEL);
if (!w->name)
return -ENOMEM;
w->sname = stream;
w->reg = SND_SOC_NOPM;
w->shift = 0;
w->kcontrol_news = wc;
w->num_kcontrols = numkc;
w->priv = priv;
return 0;
}
static void hdac_hdmi_fill_route(struct snd_soc_dapm_route *route,
const char *sink, const char *control, const char *src,
int (*handler)(struct snd_soc_dapm_widget *src,
struct snd_soc_dapm_widget *sink))
{
route->sink = sink;
route->source = src;
route->control = control;
route->connected = handler;
}
static struct hdac_hdmi_pcm *hdac_hdmi_get_pcm(struct hdac_ext_device *edev,
struct hdac_hdmi_pin *pin)
{
struct hdac_hdmi_priv *hdmi = edev->private_data;
struct hdac_hdmi_pcm *pcm = NULL;
list_for_each_entry(pcm, &hdmi->pcm_list, head) {
if (pcm->pin == pin)
return pcm;
}
return NULL;
}
/*
* Based on user selection, map the PINs with the PCMs.
*/
static int hdac_hdmi_set_pin_mux(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
int ret;
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
struct snd_soc_dapm_widget *w = snd_soc_dapm_kcontrol_widget(kcontrol);
struct snd_soc_dapm_context *dapm = w->dapm;
struct hdac_hdmi_pin *pin = w->priv;
struct hdac_ext_device *edev = to_hda_ext_device(dapm->dev);
struct hdac_hdmi_priv *hdmi = edev->private_data;
struct hdac_hdmi_pcm *pcm = NULL;
const char *cvt_name = e->texts[ucontrol->value.enumerated.item[0]];
ret = snd_soc_dapm_put_enum_double(kcontrol, ucontrol);
if (ret < 0)
return ret;
mutex_lock(&hdmi->pin_mutex);
list_for_each_entry(pcm, &hdmi->pcm_list, head) {
if (pcm->pin == pin)
pcm->pin = NULL;
/*
* Jack status is not reported during device probe as the
* PCMs are not registered by then. So report it here.
*/
if (!strcmp(cvt_name, pcm->cvt->name) && !pcm->pin) {
pcm->pin = pin;
if (pin->eld.monitor_present && pin->eld.eld_valid) {
dev_dbg(&edev->hdac.dev,
"jack report for pcm=%d\n",
pcm->pcm_id);
snd_jack_report(pcm->jack, SND_JACK_AVOUT);
}
mutex_unlock(&hdmi->pin_mutex);
return ret;
}
}
mutex_unlock(&hdmi->pin_mutex);
return ret;
}
/*
* Ideally the Mux inputs should be based on the num_muxs enumerated, but
* the display driver seem to be programming the connection list for the pin
* widget runtime.
*
* So programming all the possible inputs for the mux, the user has to take
* care of selecting the right one and leaving all other inputs selected to
* "NONE"
*/
static int hdac_hdmi_create_pin_muxs(struct hdac_ext_device *edev,
struct hdac_hdmi_pin *pin,
struct snd_soc_dapm_widget *widget,
const char *widget_name)
{
struct hdac_hdmi_priv *hdmi = edev->private_data;
struct snd_kcontrol_new *kc;
struct hdac_hdmi_cvt *cvt;
struct soc_enum *se;
char kc_name[NAME_SIZE];
char mux_items[NAME_SIZE];
/* To hold inputs to the Pin mux */
char *items[HDA_MAX_CONNECTIONS];
int i = 0;
int num_items = hdmi->num_cvt + 1;
kc = devm_kzalloc(&edev->hdac.dev, sizeof(*kc), GFP_KERNEL);
if (!kc)
return -ENOMEM;
se = devm_kzalloc(&edev->hdac.dev, sizeof(*se), GFP_KERNEL);
if (!se)
return -ENOMEM;
sprintf(kc_name, "Pin %d Input", pin->nid);
kc->name = devm_kstrdup(&edev->hdac.dev, kc_name, GFP_KERNEL);
if (!kc->name)
return -ENOMEM;
kc->private_value = (long)se;
kc->iface = SNDRV_CTL_ELEM_IFACE_MIXER;
kc->access = 0;
kc->info = snd_soc_info_enum_double;
kc->put = hdac_hdmi_set_pin_mux;
kc->get = snd_soc_dapm_get_enum_double;
se->reg = SND_SOC_NOPM;
/* enum texts: ["NONE", "cvt #", "cvt #", ...] */
se->items = num_items;
se->mask = roundup_pow_of_two(se->items) - 1;
sprintf(mux_items, "NONE");
items[i] = devm_kstrdup(&edev->hdac.dev, mux_items, GFP_KERNEL);
if (!items[i])
return -ENOMEM;
list_for_each_entry(cvt, &hdmi->cvt_list, head) {
i++;
sprintf(mux_items, "cvt %d", cvt->nid);
items[i] = devm_kstrdup(&edev->hdac.dev, mux_items, GFP_KERNEL);
if (!items[i])
return -ENOMEM;
}
se->texts = devm_kmemdup(&edev->hdac.dev, items,
(num_items * sizeof(char *)), GFP_KERNEL);
if (!se->texts)
return -ENOMEM;
return hdac_hdmi_fill_widget_info(&edev->hdac.dev, widget,
snd_soc_dapm_mux, pin, widget_name, NULL, kc, 1);
}
/* Add cvt <- input <- mux route map */
static void hdac_hdmi_add_pinmux_cvt_route(struct hdac_ext_device *edev,
struct snd_soc_dapm_widget *widgets,
struct snd_soc_dapm_route *route, int rindex)
{
struct hdac_hdmi_priv *hdmi = edev->private_data;
const struct snd_kcontrol_new *kc;
struct soc_enum *se;
int mux_index = hdmi->num_cvt + hdmi->num_pin;
int i, j;
for (i = 0; i < hdmi->num_pin; i++) {
kc = widgets[mux_index].kcontrol_news;
se = (struct soc_enum *)kc->private_value;
for (j = 0; j < hdmi->num_cvt; j++) {
hdac_hdmi_fill_route(&route[rindex],
widgets[mux_index].name,
se->texts[j + 1],
widgets[j].name, NULL);
rindex++;
}
mux_index++;
}
}
/*
* Widgets are added in the below sequence
* Converter widgets for num converters enumerated
* Pin widgets for num pins enumerated
* Pin mux widgets to represent connenction list of pin widget
*
* Total widgets elements = num_cvt + num_pin + num_pin;
*
* Routes are added as below:
* pin mux -> pin (based on num_pins)
* cvt -> "Input sel control" -> pin_mux
*
* Total route elements:
* num_pins + (pin_muxes * num_cvt)
*/
static int create_fill_widget_route_map(struct snd_soc_dapm_context *dapm)
{
struct snd_soc_dapm_widget *widgets;
struct snd_soc_dapm_route *route;
struct hdac_ext_device *edev = to_hda_ext_device(dapm->dev);
struct hdac_hdmi_priv *hdmi = edev->private_data;
struct snd_soc_dai_driver *dai_drv = dapm->component->dai_drv;
char widget_name[NAME_SIZE];
struct hdac_hdmi_cvt *cvt;
struct hdac_hdmi_pin *pin;
int ret, i = 0, num_routes = 0;
if (list_empty(&hdmi->cvt_list) || list_empty(&hdmi->pin_list))
return -EINVAL;
widgets = devm_kzalloc(dapm->dev,
(sizeof(*widgets) * ((2 * hdmi->num_pin) + hdmi->num_cvt)),
GFP_KERNEL);
if (!widgets)
return -ENOMEM;
/* DAPM widgets to represent each converter widget */
list_for_each_entry(cvt, &hdmi->cvt_list, head) {
sprintf(widget_name, "Converter %d", cvt->nid);
ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i],
snd_soc_dapm_aif_in, &cvt->nid,
widget_name, dai_drv[i].playback.stream_name, NULL, 0);
if (ret < 0)
return ret;
i++;
}
list_for_each_entry(pin, &hdmi->pin_list, head) {
sprintf(widget_name, "hif%d Output", pin->nid);
ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i],
snd_soc_dapm_output, &pin->nid,
widget_name, NULL, NULL, 0);
if (ret < 0)
return ret;
i++;
}
/* DAPM widgets to represent the connection list to pin widget */
list_for_each_entry(pin, &hdmi->pin_list, head) {
sprintf(widget_name, "Pin %d Mux", pin->nid);
ret = hdac_hdmi_create_pin_muxs(edev, pin, &widgets[i],
widget_name);
if (ret < 0)
return ret;
i++;
/* For cvt to pin_mux mapping */
num_routes += hdmi->num_cvt;
/* For pin_mux to pin mapping */
num_routes++;
}
route = devm_kzalloc(dapm->dev, (sizeof(*route) * num_routes),
GFP_KERNEL);
if (!route)
return -ENOMEM;
i = 0;
/* Add pin <- NULL <- mux route map */
list_for_each_entry(pin, &hdmi->pin_list, head) {
int sink_index = i + hdmi->num_cvt;
int src_index = sink_index + hdmi->num_pin;
hdac_hdmi_fill_route(&route[i],
widgets[sink_index].name, NULL,
widgets[src_index].name, NULL);
i++;
}
hdac_hdmi_add_pinmux_cvt_route(edev, widgets, route, i);
snd_soc_dapm_new_controls(dapm, widgets,
((2 * hdmi->num_pin) + hdmi->num_cvt));
snd_soc_dapm_add_routes(dapm, route, num_routes);
snd_soc_dapm_new_widgets(dapm->card);
return 0;
}
static int hdac_hdmi_init_dai_map(struct hdac_ext_device *edev)
{
struct hdac_hdmi_priv *hdmi = edev->private_data;
struct hdac_hdmi_dai_pin_map *dai_map;
struct hdac_hdmi_cvt *cvt;
int dai_id = 0;
if (list_empty(&hdmi->cvt_list))
return -EINVAL;
list_for_each_entry(cvt, &hdmi->cvt_list, head) {
dai_map = &hdmi->dai_map[dai_id];
dai_map->dai_id = dai_id;
dai_map->cvt = cvt;
dai_id++;
if (dai_id == HDA_MAX_CVTS) {
dev_warn(&edev->hdac.dev,
"Max dais supported: %d\n", dai_id);
break;
}
}
return 0;
}
static int hdac_hdmi_add_cvt(struct hdac_ext_device *edev, hda_nid_t nid)
{
struct hdac_hdmi_priv *hdmi = edev->private_data;
struct hdac_hdmi_cvt *cvt;
char name[NAME_SIZE];
cvt = kzalloc(sizeof(*cvt), GFP_KERNEL);
if (!cvt)
return -ENOMEM;
cvt->nid = nid;
sprintf(name, "cvt %d", cvt->nid);
cvt->name = kstrdup(name, GFP_KERNEL);
list_add_tail(&cvt->head, &hdmi->cvt_list);
hdmi->num_cvt++;
return hdac_hdmi_query_cvt_params(&edev->hdac, cvt);
}
static void hdac_hdmi_parse_eld(struct hdac_ext_device *edev,
struct hdac_hdmi_pin *pin)
{
pin->eld.info.spk_alloc = pin->eld.eld_buffer[DRM_ELD_SPEAKER];
}
static void hdac_hdmi_present_sense(struct hdac_hdmi_pin *pin, int repoll)
{
struct hdac_ext_device *edev = pin->edev;
struct hdac_hdmi_priv *hdmi = edev->private_data;
struct hdac_hdmi_pcm *pcm;
int val;
pin->repoll_count = repoll;
pm_runtime_get_sync(&edev->hdac.dev);
val = snd_hdac_codec_read(&edev->hdac, pin->nid, 0,
AC_VERB_GET_PIN_SENSE, 0);
dev_dbg(&edev->hdac.dev, "Pin sense val %x for pin: %d\n",
val, pin->nid);
mutex_lock(&hdmi->pin_mutex);
pin->eld.monitor_present = !!(val & AC_PINSENSE_PRESENCE);
pin->eld.eld_valid = !!(val & AC_PINSENSE_ELDV);
pcm = hdac_hdmi_get_pcm(edev, pin);
if (!pin->eld.monitor_present || !pin->eld.eld_valid) {
dev_dbg(&edev->hdac.dev, "%s: disconnect for pin %d\n",
__func__, pin->nid);
/*
* PCMs are not registered during device probe, so don't
* report jack here. It will be done in usermode mux
* control select.
*/
if (pcm) {
dev_dbg(&edev->hdac.dev,
"jack report for pcm=%d\n", pcm->pcm_id);
snd_jack_report(pcm->jack, 0);
}
mutex_unlock(&hdmi->pin_mutex);
goto put_hdac_device;
}
if (pin->eld.monitor_present && pin->eld.eld_valid) {
/* TODO: use i915 component for reading ELD later */
if (hdac_hdmi_get_eld(&edev->hdac, pin->nid,
pin->eld.eld_buffer,
&pin->eld.eld_size) == 0) {
if (pcm) {
dev_dbg(&edev->hdac.dev,
"jack report for pcm=%d\n",
pcm->pcm_id);
snd_jack_report(pcm->jack, SND_JACK_AVOUT);
}
hdac_hdmi_parse_eld(edev, pin);
print_hex_dump_debug("ELD: ",
DUMP_PREFIX_OFFSET, 16, 1,
pin->eld.eld_buffer, pin->eld.eld_size,
true);
} else {
pin->eld.monitor_present = false;
pin->eld.eld_valid = false;
if (pcm) {
dev_dbg(&edev->hdac.dev,
"jack report for pcm=%d\n",
pcm->pcm_id);
snd_jack_report(pcm->jack, 0);
}
}
}
mutex_unlock(&hdmi->pin_mutex);
/*
* Sometimes the pin_sense may present invalid monitor
* present and eld_valid. If ELD data is not valid, loop few
* more times to get correct pin sense and valid ELD.
*/
if ((!pin->eld.monitor_present || !pin->eld.eld_valid) && repoll)
schedule_delayed_work(&pin->work, msecs_to_jiffies(300));
put_hdac_device:
pm_runtime_put_sync(&edev->hdac.dev);
}
static void hdac_hdmi_repoll_eld(struct work_struct *work)
{
struct hdac_hdmi_pin *pin =
container_of(to_delayed_work(work), struct hdac_hdmi_pin, work);
/* picked from legacy HDA driver */
if (pin->repoll_count++ > 6)
pin->repoll_count = 0;
hdac_hdmi_present_sense(pin, pin->repoll_count);
}
static int hdac_hdmi_add_pin(struct hdac_ext_device *edev, hda_nid_t nid)
{
struct hdac_hdmi_priv *hdmi = edev->private_data;
struct hdac_hdmi_pin *pin;
pin = kzalloc(sizeof(*pin), GFP_KERNEL);
if (!pin)
return -ENOMEM;
pin->nid = nid;
list_add_tail(&pin->head, &hdmi->pin_list);
hdmi->num_pin++;
pin->edev = edev;
mutex_init(&pin->lock);
INIT_DELAYED_WORK(&pin->work, hdac_hdmi_repoll_eld);
return 0;
}
#define INTEL_VENDOR_NID 0x08
#define INTEL_GET_VENDOR_VERB 0xf81
#define INTEL_SET_VENDOR_VERB 0x781
#define INTEL_EN_DP12 0x02 /* enable DP 1.2 features */
#define INTEL_EN_ALL_PIN_CVTS 0x01 /* enable 2nd & 3rd pins and convertors */
static void hdac_hdmi_skl_enable_all_pins(struct hdac_device *hdac)
{
unsigned int vendor_param;
vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0,
INTEL_GET_VENDOR_VERB, 0);
if (vendor_param == -1 || vendor_param & INTEL_EN_ALL_PIN_CVTS)
return;
vendor_param |= INTEL_EN_ALL_PIN_CVTS;
vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0,
INTEL_SET_VENDOR_VERB, vendor_param);
if (vendor_param == -1)
return;
}
static void hdac_hdmi_skl_enable_dp12(struct hdac_device *hdac)
{
unsigned int vendor_param;
vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0,
INTEL_GET_VENDOR_VERB, 0);
if (vendor_param == -1 || vendor_param & INTEL_EN_DP12)
return;
/* enable DP1.2 mode */
vendor_param |= INTEL_EN_DP12;
vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0,
INTEL_SET_VENDOR_VERB, vendor_param);
if (vendor_param == -1)
return;
}
static struct snd_soc_dai_ops hdmi_dai_ops = {
.startup = hdac_hdmi_pcm_open,
.shutdown = hdac_hdmi_pcm_close,
.hw_params = hdac_hdmi_set_hw_params,
.prepare = hdac_hdmi_playback_prepare,
.trigger = hdac_hdmi_trigger,
.hw_free = hdac_hdmi_playback_cleanup,
};
/*
* Each converter can support a stream independently. So a dai is created
* based on the number of converter queried.
*/
static int hdac_hdmi_create_dais(struct hdac_device *hdac,
struct snd_soc_dai_driver **dais,
struct hdac_hdmi_priv *hdmi, int num_dais)
{
struct snd_soc_dai_driver *hdmi_dais;
struct hdac_hdmi_cvt *cvt;
char name[NAME_SIZE], dai_name[NAME_SIZE];
int i = 0;
u32 rates, bps;
unsigned int rate_max = 384000, rate_min = 8000;
u64 formats;
int ret;
hdmi_dais = devm_kzalloc(&hdac->dev,
(sizeof(*hdmi_dais) * num_dais),
GFP_KERNEL);
if (!hdmi_dais)
return -ENOMEM;
list_for_each_entry(cvt, &hdmi->cvt_list, head) {
ret = snd_hdac_query_supported_pcm(hdac, cvt->nid,
&rates, &formats, &bps);
if (ret)
return ret;
sprintf(dai_name, "intel-hdmi-hifi%d", i+1);
hdmi_dais[i].name = devm_kstrdup(&hdac->dev,
dai_name, GFP_KERNEL);
if (!hdmi_dais[i].name)
return -ENOMEM;
snprintf(name, sizeof(name), "hifi%d", i+1);
hdmi_dais[i].playback.stream_name =
devm_kstrdup(&hdac->dev, name, GFP_KERNEL);
if (!hdmi_dais[i].playback.stream_name)
return -ENOMEM;
/*
* Set caps based on capability queried from the converter.
* It will be constrained runtime based on ELD queried.
*/
hdmi_dais[i].playback.formats = formats;
hdmi_dais[i].playback.rates = rates;
hdmi_dais[i].playback.rate_max = rate_max;
hdmi_dais[i].playback.rate_min = rate_min;
hdmi_dais[i].playback.channels_min = 2;
hdmi_dais[i].playback.channels_max = 2;
hdmi_dais[i].ops = &hdmi_dai_ops;
i++;
}
*dais = hdmi_dais;
return 0;
}
/*
* Parse all nodes and store the cvt/pin nids in array
* Add one time initialization for pin and cvt widgets
*/
static int hdac_hdmi_parse_and_map_nid(struct hdac_ext_device *edev,
struct snd_soc_dai_driver **dais, int *num_dais)
{
hda_nid_t nid;
int i, num_nodes;
struct hdac_device *hdac = &edev->hdac;
struct hdac_hdmi_priv *hdmi = edev->private_data;
int ret;
hdac_hdmi_skl_enable_all_pins(hdac);
hdac_hdmi_skl_enable_dp12(hdac);
num_nodes = snd_hdac_get_sub_nodes(hdac, hdac->afg, &nid);
if (!nid || num_nodes <= 0) {
dev_warn(&hdac->dev, "HDMI: failed to get afg sub nodes\n");
return -EINVAL;
}
hdac->num_nodes = num_nodes;
hdac->start_nid = nid;
for (i = 0; i < hdac->num_nodes; i++, nid++) {
unsigned int caps;
unsigned int type;
caps = get_wcaps(hdac, nid);
type = get_wcaps_type(caps);
if (!(caps & AC_WCAP_DIGITAL))
continue;
switch (type) {
case AC_WID_AUD_OUT:
ret = hdac_hdmi_add_cvt(edev, nid);
if (ret < 0)
return ret;
break;
case AC_WID_PIN:
ret = hdac_hdmi_add_pin(edev, nid);
if (ret < 0)
return ret;
break;
}
}
hdac->end_nid = nid;
if (!hdmi->num_pin || !hdmi->num_cvt)
return -EIO;
ret = hdac_hdmi_create_dais(hdac, dais, hdmi, hdmi->num_cvt);
if (ret) {
dev_err(&hdac->dev, "Failed to create dais with err: %d\n",
ret);
return ret;
}
*num_dais = hdmi->num_cvt;
return hdac_hdmi_init_dai_map(edev);
}
static void hdac_hdmi_eld_notify_cb(void *aptr, int port, int pipe)
{
struct hdac_ext_device *edev = aptr;
struct hdac_hdmi_priv *hdmi = edev->private_data;
struct hdac_hdmi_pin *pin;
struct snd_soc_codec *codec = edev->scodec;
/* Don't know how this mapping is derived */
hda_nid_t pin_nid = port + 0x04;
dev_dbg(&edev->hdac.dev, "%s: for pin: %d\n", __func__, pin_nid);
/*
* skip notification during system suspend (but not in runtime PM);
* the state will be updated at resume. Also since the ELD and
* connection states are updated in anyway at the end of the resume,
* we can skip it when received during PM process.
*/
if (snd_power_get_state(codec->component.card->snd_card) !=
SNDRV_CTL_POWER_D0)
return;
if (atomic_read(&edev->hdac.in_pm))
return;
list_for_each_entry(pin, &hdmi->pin_list, head) {
if (pin->nid == pin_nid)
hdac_hdmi_present_sense(pin, 1);
}
}
static struct i915_audio_component_audio_ops aops = {
.pin_eld_notify = hdac_hdmi_eld_notify_cb,
};
static struct snd_pcm *hdac_hdmi_get_pcm_from_id(struct snd_soc_card *card,
int device)
{
struct snd_soc_pcm_runtime *rtd;
list_for_each_entry(rtd, &card->rtd_list, list) {
if (rtd->pcm && (rtd->pcm->device == device))
return rtd->pcm;
}
return NULL;
}
int hdac_hdmi_jack_init(struct snd_soc_dai *dai, int device)
{
char jack_name[NAME_SIZE];
struct snd_soc_codec *codec = dai->codec;
struct hdac_ext_device *edev = snd_soc_codec_get_drvdata(codec);
struct snd_soc_dapm_context *dapm =
snd_soc_component_get_dapm(&codec->component);
struct hdac_hdmi_priv *hdmi = edev->private_data;
struct hdac_hdmi_pcm *pcm;
struct snd_pcm *snd_pcm;
int err;
/*
* this is a new PCM device, create new pcm and
* add to the pcm list
*/
pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
if (!pcm)
return -ENOMEM;
pcm->pcm_id = device;
pcm->cvt = hdmi->dai_map[dai->id].cvt;
snd_pcm = hdac_hdmi_get_pcm_from_id(dai->component->card, device);
if (snd_pcm) {
err = snd_hdac_add_chmap_ctls(snd_pcm, device, &hdmi->chmap);
if (err < 0) {
dev_err(&edev->hdac.dev,
"chmap control add failed with err: %d for pcm: %d\n",
err, device);
kfree(pcm);
return err;
}
}
list_add_tail(&pcm->head, &hdmi->pcm_list);
sprintf(jack_name, "HDMI/DP, pcm=%d Jack", device);
return snd_jack_new(dapm->card->snd_card, jack_name,
SND_JACK_AVOUT, &pcm->jack, true, false);
}
EXPORT_SYMBOL_GPL(hdac_hdmi_jack_init);
static int hdmi_codec_probe(struct snd_soc_codec *codec)
{
struct hdac_ext_device *edev = snd_soc_codec_get_drvdata(codec);
struct hdac_hdmi_priv *hdmi = edev->private_data;
struct snd_soc_dapm_context *dapm =
snd_soc_component_get_dapm(&codec->component);
struct hdac_hdmi_pin *pin;
struct hdac_ext_link *hlink = NULL;
int ret;
edev->scodec = codec;
/*
* hold the ref while we probe, also no need to drop the ref on
* exit, we call pm_runtime_suspend() so that will do for us
*/
hlink = snd_hdac_ext_bus_get_link(edev->ebus, dev_name(&edev->hdac.dev));
if (!hlink) {
dev_err(&edev->hdac.dev, "hdac link not found\n");
return -EIO;
}
snd_hdac_ext_bus_link_get(edev->ebus, hlink);
ret = create_fill_widget_route_map(dapm);
if (ret < 0)
return ret;
aops.audio_ptr = edev;
ret = snd_hdac_i915_register_notifier(&aops);
if (ret < 0) {
dev_err(&edev->hdac.dev, "notifier register failed: err: %d\n",
ret);
return ret;
}
list_for_each_entry(pin, &hdmi->pin_list, head)
hdac_hdmi_present_sense(pin, 1);
/* Imp: Store the card pointer in hda_codec */
edev->card = dapm->card->snd_card;
/*
* hdac_device core already sets the state to active and calls
* get_noresume. So enable runtime and set the device to suspend.
*/
pm_runtime_enable(&edev->hdac.dev);
pm_runtime_put(&edev->hdac.dev);
pm_runtime_suspend(&edev->hdac.dev);
return 0;
}
static int hdmi_codec_remove(struct snd_soc_codec *codec)
{
struct hdac_ext_device *edev = snd_soc_codec_get_drvdata(codec);
pm_runtime_disable(&edev->hdac.dev);
return 0;
}
#ifdef [31mCONFIG_PM[0m
static int hdmi_codec_prepare(struct device *dev)
{
struct hdac_ext_device *edev = to_hda_ext_device(dev);
struct hdac_device *hdac = &edev->hdac;
pm_runtime_get_sync(&edev->hdac.dev);
/*
* Power down afg.
* codec_read is preferred over codec_write to set the power state.
* This way verb is send to set the power state and response
* is received. So setting power state is ensured without using loop
* to read the state.
*/
snd_hdac_codec_read(hdac, hdac->afg, 0, AC_VERB_SET_POWER_STATE,
AC_PWRST_D3);
return 0;
}
static void hdmi_codec_complete(struct device *dev)
{
struct hdac_ext_device *edev = to_hda_ext_device(dev);
struct hdac_hdmi_priv *hdmi = edev->private_data;
struct hdac_hdmi_pin *pin;
struct hdac_device *hdac = &edev->hdac;
/* Power up afg */
snd_hdac_codec_read(hdac, hdac->afg, 0, AC_VERB_SET_POWER_STATE,
AC_PWRST_D0);
hdac_hdmi_skl_enable_all_pins(&edev->hdac);
hdac_hdmi_skl_enable_dp12(&edev->hdac);
/*
* As the ELD notify callback request is not entertained while the
* device is in suspend state. Need to manually check detection of
* all pins here.
*/
list_for_each_entry(pin, &hdmi->pin_list, head)
hdac_hdmi_present_sense(pin, 1);
pm_runtime_put_sync(&edev->hdac.dev);
}
#else
#define hdmi_codec_prepare NULL
#define hdmi_codec_complete NULL
#endif
static struct snd_soc_codec_driver hdmi_hda_codec = {
.probe = hdmi_codec_probe,
.remove = hdmi_codec_remove,
.idle_bias_off = true,
};
static void hdac_hdmi_get_chmap(struct hdac_device *hdac, int pcm_idx,
unsigned char *chmap)
{
struct hdac_ext_device *edev = to_ehdac_device(hdac);
struct hdac_hdmi_priv *hdmi = edev->private_data;
struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
struct hdac_hdmi_pin *pin = pcm->pin;
/* chmap is already set to 0 in caller */
if (!pin)
return;
memcpy(chmap, pin->chmap, ARRAY_SIZE(pin->chmap));
}
static void hdac_hdmi_set_chmap(struct hdac_device *hdac, int pcm_idx,
unsigned char *chmap, int prepared)
{
struct hdac_ext_device *edev = to_ehdac_device(hdac);
struct hdac_hdmi_priv *hdmi = edev->private_data;
struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
struct hdac_hdmi_pin *pin = pcm->pin;
mutex_lock(&pin->lock);
pin->chmap_set = true;
memcpy(pin->chmap, chmap, ARRAY_SIZE(pin->chmap));
if (prepared)
hdac_hdmi_setup_audio_infoframe(edev, pcm->cvt->nid, pin->nid);
mutex_unlock(&pin->lock);
}
static bool is_hdac_hdmi_pcm_attached(struct hdac_device *hdac, int pcm_idx)
{
struct hdac_ext_device *edev = to_ehdac_device(hdac);
struct hdac_hdmi_priv *hdmi = edev->private_data;
struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
struct hdac_hdmi_pin *pin = pcm->pin;
return pin ? true:false;
}
static int hdac_hdmi_get_spk_alloc(struct hdac_device *hdac, int pcm_idx)
{
struct hdac_ext_device *edev = to_ehdac_device(hdac);
struct hdac_hdmi_priv *hdmi = edev->private_data;
struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
struct hdac_hdmi_pin *pin = pcm->pin;
if (!pin || !pin->eld.eld_valid)
return 0;
return pin->eld.info.spk_alloc;
}
static int hdac_hdmi_dev_probe(struct hdac_ext_device *edev)
{
struct hdac_device *codec = &edev->hdac;
struct hdac_hdmi_priv *hdmi_priv;
struct snd_soc_dai_driver *hdmi_dais = NULL;
struct hdac_ext_link *hlink = NULL;
int num_dais = 0;
int ret = 0;
/* hold the ref while we probe */
hlink = snd_hdac_ext_bus_get_link(edev->ebus, dev_name(&edev->hdac.dev));
if (!hlink) {
dev_err(&edev->hdac.dev, "hdac link not found\n");
return -EIO;
}
snd_hdac_ext_bus_link_get(edev->ebus, hlink);
hdmi_priv = devm_kzalloc(&codec->dev, sizeof(*hdmi_priv), GFP_KERNEL);
if (hdmi_priv == NULL)
return -ENOMEM;
edev->private_data = hdmi_priv;
snd_hdac_register_chmap_ops(codec, &hdmi_priv->chmap);
hdmi_priv->chmap.ops.get_chmap = hdac_hdmi_get_chmap;
hdmi_priv->chmap.ops.set_chmap = hdac_hdmi_set_chmap;
hdmi_priv->chmap.ops.is_pcm_attached = is_hdac_hdmi_pcm_attached;
hdmi_priv->chmap.ops.get_spk_alloc = hdac_hdmi_get_spk_alloc;
dev_set_drvdata(&codec->dev, edev);
INIT_LIST_HEAD(&hdmi_priv->pin_list);
INIT_LIST_HEAD(&hdmi_priv->cvt_list);
INIT_LIST_HEAD(&hdmi_priv->pcm_list);
mutex_init(&hdmi_priv->pin_mutex);
/*
* Turned off in the runtime_suspend during the first explicit
* pm_runtime_suspend call.
*/
ret = snd_hdac_display_power(edev->hdac.bus, true);
if (ret < 0) {
dev_err(&edev->hdac.dev,
"Cannot turn on display power on i915 err: %d\n",
ret);
return ret;
}
ret = hdac_hdmi_parse_and_map_nid(edev, &hdmi_dais, &num_dais);
if (ret < 0) {
dev_err(&codec->dev,
"Failed in parse and map nid with err: %d\n", ret);
return ret;
}
/* ASoC specific initialization */
ret = snd_soc_register_codec(&codec->dev, &hdmi_hda_codec,
hdmi_dais, num_dais);
snd_hdac_ext_bus_link_put(edev->ebus, hlink);
return ret;
}
static int hdac_hdmi_dev_remove(struct hdac_ext_device *edev)
{
struct hdac_hdmi_priv *hdmi = edev->private_data;
struct hdac_hdmi_pin *pin, *pin_next;
struct hdac_hdmi_cvt *cvt, *cvt_next;
struct hdac_hdmi_pcm *pcm, *pcm_next;
snd_soc_unregister_codec(&edev->hdac.dev);
list_for_each_entry_safe(pcm, pcm_next, &hdmi->pcm_list, head) {
pcm->cvt = NULL;
pcm->pin = NULL;
list_del(&pcm->head);
kfree(pcm);
}
list_for_each_entry_safe(cvt, cvt_next, &hdmi->cvt_list, head) {
list_del(&cvt->head);
kfree(cvt->name);
kfree(cvt);
}
list_for_each_entry_safe(pin, pin_next, &hdmi->pin_list, head) {
list_del(&pin->head);
kfree(pin);
}
return 0;
}
#ifdef [31mCONFIG_PM[0m
static int hdac_hdmi_runtime_suspend(struct device *dev)
{
struct hdac_ext_device *edev = to_hda_ext_device(dev);
struct hdac_device *hdac = &edev->hdac;
struct hdac_bus *bus = hdac->bus;
struct hdac_ext_bus *ebus = hbus_to_ebus(bus);
struct hdac_ext_link *hlink = NULL;
int err;
dev_dbg(dev, "Enter: %s\n", __func__);
/* controller may not have been initialized for the first time */
if (!bus)
return 0;
/*
* Power down afg.
* codec_read is preferred over codec_write to set the power state.
* This way verb is send to set the power state and response
* is received. So setting power state is ensured without using loop
* to read the state.
*/
snd_hdac_codec_read(hdac, hdac->afg, 0, AC_VERB_SET_POWER_STATE,
AC_PWRST_D3);
err = snd_hdac_display_power(bus, false);
if (err < 0) {
dev_err(bus->dev, "Cannot turn on display power on i915\n");
return err;
}
hlink = snd_hdac_ext_bus_get_link(ebus, dev_name(dev));
if (!hlink) {
dev_err(dev, "hdac link not found\n");
return -EIO;
}
snd_hdac_ext_bus_link_put(ebus, hlink);
return 0;
}
static int hdac_hdmi_runtime_resume(struct device *dev)
{
struct hdac_ext_device *edev = to_hda_ext_device(dev);
struct hdac_device *hdac = &edev->hdac;
struct hdac_bus *bus = hdac->bus;
struct hdac_ext_bus *ebus = hbus_to_ebus(bus);
struct hdac_ext_link *hlink = NULL;
int err;
dev_dbg(dev, "Enter: %s\n", __func__);
/* controller may not have been initialized for the first time */
if (!bus)
return 0;
hlink = snd_hdac_ext_bus_get_link(ebus, dev_name(dev));
if (!hlink) {
dev_err(dev, "hdac link not found\n");
return -EIO;
}
snd_hdac_ext_bus_link_get(ebus, hlink);
err = snd_hdac_display_power(bus, true);
if (err < 0) {
dev_err(bus->dev, "Cannot turn on display power on i915\n");
return err;
}
hdac_hdmi_skl_enable_all_pins(&edev->hdac);
hdac_hdmi_skl_enable_dp12(&edev->hdac);
/* Power up afg */
snd_hdac_codec_read(hdac, hdac->afg, 0, AC_VERB_SET_POWER_STATE,
AC_PWRST_D0);
return 0;
}
#else
#define hdac_hdmi_runtime_suspend NULL
#define hdac_hdmi_runtime_resume NULL
#endif
static const struct dev_pm_ops hdac_hdmi_pm = {
SET_RUNTIME_PM_OPS(hdac_hdmi_runtime_suspend, hdac_hdmi_runtime_resume, NULL)
.prepare = hdmi_codec_prepare,
.complete = hdmi_codec_complete,
};
static const struct hda_device_id hdmi_list[] = {
HDA_CODEC_EXT_ENTRY(0x80862809, 0x100000, "Skylake HDMI", 0),
HDA_CODEC_EXT_ENTRY(0x8086280a, 0x100000, "Broxton HDMI", 0),
HDA_CODEC_EXT_ENTRY(0x8086280b, 0x100000, "Kabylake HDMI", 0),
{}
};
MODULE_DEVICE_TABLE(hdaudio, hdmi_list);
static struct hdac_ext_driver hdmi_driver = {
. hdac = {
.driver = {
.name = "HDMI HDA Codec",
.pm = &hdac_hdmi_pm,
},
.id_table = hdmi_list,
},
.probe = hdac_hdmi_dev_probe,
.remove = hdac_hdmi_dev_remove,
};
static int __init hdmi_init(void)
{
return snd_hda_ext_driver_register(&hdmi_driver);
}
static void __exit hdmi_exit(void)
{
snd_hda_ext_driver_unregister(&hdmi_driver);
}
module_init(hdmi_init);
module_exit(hdmi_exit);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("HDMI HD codec");
MODULE_AUTHOR("Samreen Nilofer<samreen.nilofer@intel.com>");
MODULE_AUTHOR("Subhransu S. Prusty<subhransu.s.prusty@intel.com>");