From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Subhransu S. Prusty" Subject: [PATCH v3 11/15] ASoC: hdac_hdmi: Add infoframe support for dp audio Date: Tue, 8 Dec 2015 02:54:25 +0530 Message-ID: <1449523469-4395-11-git-send-email-subhransu.s.prusty@intel.com> References: <1449523078-4311-1-git-send-email-subhransu.s.prusty@intel.com> <1449523469-4395-1-git-send-email-subhransu.s.prusty@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by alsa0.perex.cz (Postfix) with ESMTP id 8ED18265611 for ; Mon, 7 Dec 2015 16:54:23 +0100 (CET) In-Reply-To: <1449523469-4395-1-git-send-email-subhransu.s.prusty@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: alsa-devel@alsa-project.org Cc: tiwai@suse.de, lgirdwood@gmail.com, patches.audio@intel.com, broonie@kernel.org, Vinod Koul , "Subhransu S. Prusty" List-Id: alsa-devel@alsa-project.org This uses the get_conn_type API added in the previous patch to identify the type of display connected and fills the infoframe accordingly. Signed-off-by: Subhransu S. Prusty Signed-off-by: Vinod Koul --- sound/soc/codecs/hdac_hdmi.c | 70 +++++++++++++++++++++++++++++++++++++------- 1 file changed, 60 insertions(+), 10 deletions(-) diff --git a/sound/soc/codecs/hdac_hdmi.c b/sound/soc/codecs/hdac_hdmi.c index 2d971c4..32d1938 100644 --- a/sound/soc/codecs/hdac_hdmi.c +++ b/sound/soc/codecs/hdac_hdmi.c @@ -238,27 +238,71 @@ 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; + if (conn_type == 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; + + } else if (conn_type == 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; + } else { + 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); @@ -268,9 +312,15 @@ 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); -- 1.9.1