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ASoC: hdac_hdmi: Add infoframe support for dp audio 

For DP audio support, infoframe needs to be different. Based on
get_conn_type result we pack either HDMI or DP infoframe.

Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Subhransu S. Prusty 2016-02-12 07:46:09 +05:30 committed by Mark Brown
parent 148569fddb
commit 478f544e5b
1 changed files with 64 additions and 10 deletions
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74
sound/soc/codecs/hdac_hdmi.c
View File

@ -253,27 +253,75 @@ hdac_hdmi_set_dip_index(struct hdac_ext_device *hdac, hda_nid_t pin_nid,
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;
u8 *dip = (u8 *)&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 = 2;
hdmi_audio_infoframe_init(&frame);
list_for_each_entry(pin, &hdmi->pin_list, head) {
if (pin->nid == pin_nid)
break;
}
/* Default stereo for now */
frame.channels = 2;
eld_buf = pin->eld.eld_buffer;
conn_type = drm_eld_get_conn_type(eld_buf);
/* setup channel count */
snd_hdac_codec_write(&hdac->hdac, cvt_nid, 0,
AC_VERB_SET_CVT_CHAN_COUNT, frame.channels - 1);
AC_VERB_SET_CVT_CHAN_COUNT, channels - 1);
ret = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer));
if (ret < 0)
return ret;
switch (conn_type) {
case DRM_ELD_CONN_TYPE_HDMI:
hdmi_audio_infoframe_init(&frame);
/* Default stereo for now */
frame.channels = channels;
ret = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer));
if (ret < 0)
return ret;
dip = (u8 *)&frame;
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 = 0;
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);
@ -283,9 +331,15 @@ static int hdac_hdmi_setup_audio_infoframe(struct hdac_ext_device *hdac,
/* Fill infoframe. Index auto-incremented */
hdac_hdmi_set_dip_index(hdac, pin_nid, 0x0, 0x0);
for (i = 0; i < sizeof(frame); i++)
snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
if (conn_type == DRM_ELD_CONN_TYPE_HDMI) {
for (i = 0; i < sizeof(frame); i++)
snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
AC_VERB_SET_HDMI_DIP_DATA, dip[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);