[Intel-gfx] [v2 11/14] drm/i915: Add HLG EOTF

[Shankar, Uma]

>-----Original Message-----
>From: Sharma, Shashank
>Sent: Friday, December 21, 2018 2:17 PM
>To: Shankar, Uma <uma.shankar at intel.com>; intel-gfx at lists.freedesktop.org;
>dri-devel at lists.freedesktop.org
>Cc: Lankhorst, Maarten <maarten.lankhorst at intel.com>; Syrjala, Ville
><ville.syrjala at intel.com>; Brian.Starkey at arm.com; Ville Syrjälä
><ville.syrjala at linux.intel.com>
>Subject: Re: [v2 11/14] drm/i915: Add HLG EOTF
>
>Regards
>
>Shashank
>
>
>On 12/12/2018 2:08 AM, Uma Shankar wrote:
>> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
>>
>> ADD HLG EOTF to the list of EOTF transfer functions supported.
>Would it be possible to add some details about HLG ?

Sure, will add that.

Regards,
Uma Shankar

>>
>> Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
>> Signed-off-by: Uma Shankar <uma.shankar at intel.com>
>> ---
>>   drivers/gpu/drm/drm_edid.c | 4 ++--
>>   include/linux/hdmi.h       | 1 +
>>   2 files changed, 3 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
>> index 5a7fc9b..fa86494 100644
>> --- a/drivers/gpu/drm/drm_edid.c
>> +++ b/drivers/gpu/drm/drm_edid.c
>> @@ -3857,8 +3857,8 @@ static uint16_t eotf_supported(const u8 *edid_ext)
>>   	return edid_ext[2] &
>>   		(BIT(HDMI_EOTF_TRADITIONAL_GAMMA_SDR) |
>>   		 BIT(HDMI_EOTF_TRADITIONAL_GAMMA_HDR) |
>> -		 BIT(HDMI_EOTF_SMPTE_ST2084));
>> -
>> +		 BIT(HDMI_EOTF_SMPTE_ST2084) |
>> +		 BIT(HDMI_EOTF_BT_2100_HLG));
>>   }
>>
>>   static uint16_t hdr_metadata_type(const u8 *edid_ext)
>> diff --git a/include/linux/hdmi.h b/include/linux/hdmi.h
>> index ce00e1e..b5346c3 100644
>> --- a/include/linux/hdmi.h
>> +++ b/include/linux/hdmi.h
>> @@ -146,6 +146,7 @@ enum hdmi_eotf {
>>   	HDMI_EOTF_TRADITIONAL_GAMMA_SDR,
>>   	HDMI_EOTF_TRADITIONAL_GAMMA_HDR,
>>   	HDMI_EOTF_SMPTE_ST2084,
>> +	HDMI_EOTF_BT_2100_HLG,
>>   };
>>
>>   struct hdmi_avi_infoframe {