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 --- sound/soc/codecs/hdac_hdmi.c | 74 ++++++++++++++++++++++++++++++++++++++------ 1 file changed, 64 insertions(+), 10 deletions(-)
diff --git a/sound/soc/codecs/hdac_hdmi.c b/sound/soc/codecs/hdac_hdmi.c index dcd1cb6..36f1200 100644 --- a/sound/soc/codecs/hdac_hdmi.c +++ b/sound/soc/codecs/hdac_hdmi.c @@ -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);