This patch parses ELD speaker allocation data block to find
sink's chmap capability.
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@xxxxxxxxx>
Signed-off-by: Vinod Koul <vinod.koul@xxxxxxxxx>
---
sound/soc/codecs/hdac_hdmi.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/sound/soc/codecs/hdac_hdmi.c b/sound/soc/codecs/hdac_hdmi.c
index aaa038f..81ac173 100644
--- a/sound/soc/codecs/hdac_hdmi.c
+++ b/sound/soc/codecs/hdac_hdmi.c
@@ -60,11 +60,17 @@ struct hdac_hdmi_cvt {
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 {
@@ -1008,6 +1014,12 @@ static int hdac_hdmi_add_cvt(struct hdac_ext_device *edev, hda_nid_t nid)
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;
@@ -1065,6 +1077,7 @@ static void hdac_hdmi_present_sense(struct hdac_hdmi_pin *pin, int repoll)
snd_jack_report(pcm->jack, SND_JACK_AVOUT);
}
+ hdac_hdmi_parse_eld(edev, pin);
print_hex_dump_bytes("ELD: ", DUMP_PREFIX_OFFSET,
pin->eld.eld_buffer, pin->eld.eld_size);
--
1.9.1
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