Re: [v2 11/14] drm/i915: Add HLG EOTF

From: "Sharma, Shashank" <shashank.sharma@intel.com>
To: Uma Shankar <uma.shankar@intel.com>,
	intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org
Cc: ville.syrjala@intel.com, maarten.lankhorst@intel.com
Subject: Re: [v2 11/14] drm/i915: Add HLG EOTF
Date: Fri, 21 Dec 2018 14:17:29 +0530	[thread overview]
Message-ID: <5d186561-5e6b-2b41-2476-5f177291e10a@intel.com> (raw)
In-Reply-To: <1544560702-16447-12-git-send-email-uma.shankar@intel.com>

Regards

Shashank


On 12/12/2018 2:08 AM, Uma Shankar wrote:
> From: Ville Syrjälä <ville.syrjala@linux.intel.com>
>
> ADD HLG EOTF to the list of EOTF transfer functions
> supported.
Would it be possible to add some details about HLG ?
>
> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Signed-off-by: Uma Shankar <uma.shankar@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 {

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