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: [v4 10/12] drm/i915: Add HLG EOTF
Date: Tue, 8 Jan 2019 14:41:25 +0530 [thread overview]
Message-ID: <1546938687-27306-11-git-send-email-uma.shankar@intel.com> (raw)
In-Reply-To: <1546938687-27306-1-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>
---
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 df27012..5592c9b 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -3850,8 +3850,8 @@ 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 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 {
--
1.9.1
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next prev parent reply other threads:[~2019-01-08 9:11 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-08 9:11 [v4 00/12] Add HDR Metadata Parsing and handling in DRM layer Uma Shankar
2019-01-08 9:11 ` [v4 01/12] drm: Add HDR source metadata property Uma Shankar
2019-01-09 0:51 ` [Intel-gfx] " kbuild test robot
2019-01-10 11:03 ` Liviu Dudau
2019-01-08 9:11 ` [v4 02/12] drm: Parse HDR metadata info from EDID Uma Shankar
2019-01-08 9:11 ` [v4 03/12] drm: Parse Colorimetry data block " Uma Shankar
2019-01-09 2:57 ` [Intel-gfx] " kbuild test robot
2019-01-08 9:11 ` [v4 04/12] drm/i915: Attach HDR metadata property to connector Uma Shankar
2019-01-08 9:11 ` [v4 05/12] drm: Add HDR capability field to plane structure Uma Shankar
2019-01-09 5:09 ` kbuild test robot
2019-01-10 10:47 ` Liviu Dudau
2019-01-10 11:45 ` Shankar, Uma
2019-01-08 9:11 ` [v4 06/12] drm: Implement HDR output metadata set and get property handling Uma Shankar
2019-01-08 9:11 ` [v4 07/12] drm: Enable HDR infoframe support Uma Shankar
2019-01-09 2:19 ` kbuild test robot
2019-01-09 7:19 ` kbuild test robot
2019-01-08 9:11 ` [v4 08/12] drm/i915: Write HDR infoframe and send to panel Uma Shankar
2019-01-08 9:11 ` [v4 09/12] drm/i915: [DO NOT MERGE] hack for glk board outputs Uma Shankar
2019-01-08 9:11 ` Uma Shankar [this message]
2019-01-08 19:45 ` [v4 10/12] drm/i915: Add HLG EOTF Matt Roper
2019-01-09 12:08 ` Shankar, Uma
2019-01-08 9:11 ` [v4 11/12] drm/i915: Enable infoframes on GLK+ for HDR Uma Shankar
2019-01-08 9:11 ` [v4 12/12] drm/i915:Enabled Modeset when HDR Infoframe changes Uma Shankar
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