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From: Uma Shankar <uma.shankar@intel.com>
To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org
Cc: ville.syrjala@intel.com, maarten.lankhorst@intel.com
Subject: [v6 09/13] drm/i915: Add HLG EOTF
Date: Wed, 20 Mar 2019 16:18:22 +0530	[thread overview]
Message-ID: <1553078906-5991-10-git-send-email-uma.shankar@intel.com> (raw)
In-Reply-To: <1553078906-5991-1-git-send-email-uma.shankar@intel.com>

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

ADD HLG EOTF to the list of EOTF transfer functions supported.
Hybrid Log-Gamma (HLG) is a high dynamic range (HDR) standard.
HLG defines a nonlinear transfer function in which the lower
half of the signal values use a gamma curve and the upper half
of the signal values use a logarithmic curve.

v2: Rebase

v3: Fixed a warning message

v4: Addressed Shashank's review comments

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Reviewed-by: Shashank Sharma <shashank.sharma@intel.com>
---
 drivers/gpu/drm/drm_edid.c | 3 ++-
 include/linux/hdmi.h       | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 78c0b97..4784447 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -3868,7 +3868,8 @@ static uint8_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 uint8_t hdr_metadata_type(const u8 *edid_ext)
diff --git a/include/linux/hdmi.h b/include/linux/hdmi.h
index b925b24..202ed4a 100644
--- a/include/linux/hdmi.h
+++ b/include/linux/hdmi.h
@@ -161,6 +161,7 @@ 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 {
-- 
1.9.1

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  parent reply	other threads:[~2019-03-20 10:48 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-20 10:48 [v6 00/13] Add HDR Metadata Parsing and handling in DRM layer Uma Shankar
2019-03-20 10:48 ` [v6 01/13] drm: Add HDR source metadata property Uma Shankar
2019-03-21 11:30   ` Brian Starkey
2019-03-29  6:13     ` Shankar, Uma
2019-03-20 10:48 ` [v6 02/13] drm: Parse HDR metadata info from EDID Uma Shankar
2019-03-29 11:41   ` Sharma, Shashank
2019-03-20 10:48 ` [v6 03/13] drm: Parse Colorimetry data block " Uma Shankar
2019-03-21 11:17   ` Brian Starkey
2019-03-29  6:16     ` Shankar, Uma
2019-03-20 10:48 ` [v6 04/13] drm/i915: Attach HDR metadata property to connector Uma Shankar
2019-03-20 10:48 ` [v6 05/13] drm: Implement HDR output metadata set and get property handling Uma Shankar
2019-03-21 11:46   ` Brian Starkey
2019-03-29  6:21     ` Shankar, Uma
2019-03-20 10:48 ` [v6 06/13] drm: Enable HDR infoframe support Uma Shankar
2019-03-21 11:41   ` Brian Starkey
2019-03-29  6:24     ` Shankar, Uma
2019-03-20 10:48 ` [v6 07/13] drm/i915: Write HDR infoframe and send to panel Uma Shankar
2019-03-29 11:48   ` Sharma, Shashank
2019-03-20 10:48 ` [v6 08/13] drm/i915: [DO NOT MERGE] hack for glk board outputs Uma Shankar
2019-03-20 10:48 ` Uma Shankar [this message]
2019-03-20 10:48 ` [v6 10/13] drm/i915: Enable infoframes on GLK+ for HDR Uma Shankar
2019-03-29 12:31   ` Sharma, Shashank
2019-03-20 10:48 ` [v6 11/13] drm/i915:Enabled Modeset when HDR Infoframe changes Uma Shankar
2019-03-29 12:56   ` Sharma, Shashank
2019-03-20 10:48 ` [v6 12/13] drm/i915: Set Infoframe for non modeset case for HDR Uma Shankar
2019-03-29 12:14   ` Sharma, Shashank
2019-03-29 14:04   ` Ville Syrjälä
2019-04-02 16:27     ` Shankar, Uma
2019-03-20 10:48 ` [v6 13/13] video/hdmi: Add const variants for drm infoframe Uma Shankar
2019-03-21 12:00   ` Brian Starkey
2019-03-29  6:29     ` Shankar, Uma
2019-03-29 12:22   ` Sharma, Shashank

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