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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Non-generic simple HDMI codec support
*/
#include <linux/slab.h>
#include <linux/module.h>
#include "hdmi_local.h"
#include "hda_jack.h"
int snd_hda_hdmi_simple_build_pcms(struct hda_codec *codec)
{
struct hdmi_spec *spec = codec->spec;
struct hda_pcm *info;
unsigned int chans;
struct hda_pcm_stream *pstr;
struct hdmi_spec_per_cvt *per_cvt;
per_cvt = get_cvt(spec, 0);
chans = get_wcaps(codec, per_cvt->cvt_nid);
chans = get_wcaps_channels(chans);
info = snd_hda_codec_pcm_new(codec, "HDMI 0");
if (!info)
return -ENOMEM;
spec->pcm_rec[0].pcm = info;
info->pcm_type = HDA_PCM_TYPE_HDMI;
pstr = &info->stream[SNDRV_PCM_STREAM_PLAYBACK];
*pstr = spec->pcm_playback;
pstr->nid = per_cvt->cvt_nid;
if (pstr->channels_max <= 2 && chans && chans <= 16)
pstr->channels_max = chans;
return 0;
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_simple_build_pcms, "SND_HDA_CODEC_HDMI");
/* unsolicited event for jack sensing */
void snd_hda_hdmi_simple_unsol_event(struct hda_codec *codec,
unsigned int res)
{
snd_hda_jack_set_dirty_all(codec);
snd_hda_jack_report_sync(codec);
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_simple_unsol_event, "SND_HDA_CODEC_HDMI");
static void free_hdmi_jack_priv(struct snd_jack *jack)
{
struct hdmi_pcm *pcm = jack->private_data;
pcm->jack = NULL;
}
static int simple_hdmi_build_jack(struct hda_codec *codec)
{
char hdmi_str[32] = "HDMI/DP";
struct hdmi_spec *spec = codec->spec;
struct snd_jack *jack;
struct hdmi_pcm *pcmp = get_hdmi_pcm(spec, 0);
int pcmdev = pcmp->pcm->device;
int err;
if (pcmdev > 0)
sprintf(hdmi_str + strlen(hdmi_str), ",pcm=%d", pcmdev);
err = snd_jack_new(codec->card, hdmi_str, SND_JACK_AVOUT, &jack,
true, false);
if (err < 0)
return err;
pcmp->jack = jack;
jack->private_data = pcmp;
jack->private_free = free_hdmi_jack_priv;
return 0;
}
int snd_hda_hdmi_simple_build_controls(struct hda_codec *codec)
{
struct hdmi_spec *spec = codec->spec;
struct hdmi_spec_per_cvt *per_cvt;
int err;
per_cvt = get_cvt(spec, 0);
err = snd_hda_create_dig_out_ctls(codec, per_cvt->cvt_nid,
per_cvt->cvt_nid,
HDA_PCM_TYPE_HDMI);
if (err < 0)
return err;
return simple_hdmi_build_jack(codec);
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_simple_build_controls, "SND_HDA_CODEC_HDMI");
int snd_hda_hdmi_simple_init(struct hda_codec *codec)
{
struct hdmi_spec *spec = codec->spec;
struct hdmi_spec_per_pin *per_pin = get_pin(spec, 0);
hda_nid_t pin = per_pin->pin_nid;
snd_hda_codec_write(codec, pin, 0,
AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT);
/* some codecs require to unmute the pin */
if (get_wcaps(codec, pin) & AC_WCAP_OUT_AMP)
snd_hda_codec_write(codec, pin, 0, AC_VERB_SET_AMP_GAIN_MUTE,
AMP_OUT_UNMUTE);
snd_hda_jack_detect_enable(codec, pin, per_pin->dev_id);
return 0;
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_simple_init, "SND_HDA_CODEC_HDMI");
void snd_hda_hdmi_simple_remove(struct hda_codec *codec)
{
struct hdmi_spec *spec = codec->spec;
snd_array_free(&spec->pins);
snd_array_free(&spec->cvts);
kfree(spec);
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_simple_remove, "SND_HDA_CODEC_HDMI");
int snd_hda_hdmi_simple_pcm_open(struct hda_pcm_stream *hinfo,
struct hda_codec *codec,
struct snd_pcm_substream *substream)
{
struct hdmi_spec *spec = codec->spec;
if (spec->hw_constraints_channels) {
snd_pcm_hw_constraint_list(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_CHANNELS,
spec->hw_constraints_channels);
} else {
snd_pcm_hw_constraint_step(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_CHANNELS, 2);
}
return snd_hda_multi_out_dig_open(codec, &spec->multiout);
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_simple_pcm_open, "SND_HDA_CODEC_HDMI");
static int simple_playback_pcm_close(struct hda_pcm_stream *hinfo,
struct hda_codec *codec,
struct snd_pcm_substream *substream)
{
struct hdmi_spec *spec = codec->spec;
return snd_hda_multi_out_dig_close(codec, &spec->multiout);
}
static int simple_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
struct hda_codec *codec,
unsigned int stream_tag,
unsigned int format,
struct snd_pcm_substream *substream)
{
struct hdmi_spec *spec = codec->spec;
return snd_hda_multi_out_dig_prepare(codec, &spec->multiout,
stream_tag, format, substream);
}
static const struct hda_pcm_stream simple_pcm_playback = {
.substreams = 1,
.channels_min = 2,
.channels_max = 2,
.ops = {
.open = snd_hda_hdmi_simple_pcm_open,
.close = simple_playback_pcm_close,
.prepare = simple_playback_pcm_prepare
},
};
int snd_hda_hdmi_simple_probe(struct hda_codec *codec,
hda_nid_t cvt_nid, hda_nid_t pin_nid)
{
struct hdmi_spec *spec;
struct hdmi_spec_per_cvt *per_cvt;
struct hdmi_spec_per_pin *per_pin;
spec = kzalloc(sizeof(*spec), GFP_KERNEL);
if (!spec)
return -ENOMEM;
spec->codec = codec;
codec->spec = spec;
snd_array_init(&spec->pins, sizeof(struct hdmi_spec_per_pin), 1);
snd_array_init(&spec->cvts, sizeof(struct hdmi_spec_per_cvt), 1);
spec->multiout.num_dacs = 0; /* no analog */
spec->multiout.max_channels = 2;
spec->multiout.dig_out_nid = cvt_nid;
spec->num_cvts = 1;
spec->num_pins = 1;
per_pin = snd_array_new(&spec->pins);
per_cvt = snd_array_new(&spec->cvts);
if (!per_pin || !per_cvt) {
snd_hda_hdmi_simple_remove(codec);
return -ENOMEM;
}
per_cvt->cvt_nid = cvt_nid;
per_pin->pin_nid = pin_nid;
spec->pcm_playback = simple_pcm_playback;
return 0;
}
EXPORT_SYMBOL_NS_GPL(snd_hda_hdmi_simple_probe, "SND_HDA_CODEC_HDMI");
/*
* driver entries
*/
enum { MODEL_VIA };
/* VIA HDMI Implementation */
#define VIAHDMI_CVT_NID 0x02 /* audio converter1 */
#define VIAHDMI_PIN_NID 0x03 /* HDMI output pin1 */
static int simplehdmi_probe(struct hda_codec *codec,
const struct hda_device_id *id)
{
switch (id->driver_data) {
case MODEL_VIA:
return snd_hda_hdmi_simple_probe(codec, VIAHDMI_CVT_NID,
VIAHDMI_PIN_NID);
default:
return -EINVAL;
}
}
static const struct hda_codec_ops simplehdmi_codec_ops = {
.probe = simplehdmi_probe,
.remove = snd_hda_hdmi_simple_remove,
.build_controls = snd_hda_hdmi_simple_build_controls,
.build_pcms = snd_hda_hdmi_simple_build_pcms,
.init = snd_hda_hdmi_simple_init,
.unsol_event = snd_hda_hdmi_simple_unsol_event,
};
static const struct hda_device_id snd_hda_id_simplehdmi[] = {
HDA_CODEC_ID_MODEL(0x11069f80, "VX900 HDMI/DP", MODEL_VIA),
HDA_CODEC_ID_MODEL(0x11069f81, "VX900 HDMI/DP", MODEL_VIA),
{} /* terminator */
};
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Simple HDMI HD-audio codec support");
static struct hda_codec_driver simplehdmi_driver = {
.id = snd_hda_id_simplehdmi,
.ops = &simplehdmi_codec_ops,
};
module_hda_codec_driver(simplehdmi_driver);
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