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ASoC: hdac_hdmi: parse eld for channel map capability 

This patch parses ELD speaker allocation data block to find
sink's chmap capability.

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>
hifive-unleashed-5.1
Subhransu S. Prusty 2016-04-14 10:07:28 +05:30 committed by Mark Brown
parent 6a5ea5c5d1
commit b7756edeb7
1 changed files with 13 additions and 0 deletions
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13
sound/soc/codecs/hdac_hdmi.c
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@ -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);