From: Uma Shankar <uma.shankar@intel.com>
To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org
Cc: dcastagna@chromium.org, emil.l.velikov@gmail.com,
Uma Shankar <uma.shankar@intel.com>,
seanpaul@chromium.org, ville.syrjala@intel.com,
maarten.lankhorst@intel.com
Subject: [v7 6/9] drm/i915: Add HLG EOTF
Date: Wed, 3 Apr 2019 01:50:27 +0530 [thread overview]
Message-ID: <1554236430-7466-7-git-send-email-uma.shankar@intel.com> (raw)
In-Reply-To: <1554236430-7466-1-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 51945f6..5e393fd 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -3835,7 +3835,8 @@ 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 a23c5e7..bbf14b9 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
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
next prev parent reply other threads:[~2019-04-02 20:20 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-02 20:20 [v7 0/9] Add HDR Metadata Parsing and handling in DRM layer Uma Shankar
2019-04-02 20:20 ` [v7 1/9] drm: Add HDR source metadata property Uma Shankar
2019-04-02 20:39 ` Sam Ravnborg
2019-04-08 10:20 ` Jonas Karlman
2019-04-09 16:17 ` Shankar, Uma
2019-04-02 20:20 ` [v7 2/9] drm: Parse HDR metadata info from EDID Uma Shankar
2019-04-02 20:20 ` [v7 3/9] drm: Enable HDR infoframe support Uma Shankar
2019-04-02 20:37 ` Sam Ravnborg
2019-04-02 20:20 ` [v7 4/9] drm/i915: Attach HDR metadata property to connector Uma Shankar
2019-04-02 20:20 ` [v7 5/9] drm/i915: Write HDR infoframe and send to panel Uma Shankar
2019-04-02 20:20 ` Uma Shankar [this message]
2019-04-02 20:20 ` [v7 7/9] drm/i915: Enable infoframes on GLK+ for HDR Uma Shankar
2019-04-02 20:20 ` [v7 8/9] drm/i915:Enabled Modeset when HDR Infoframe changes Uma Shankar
2019-04-02 20:20 ` [v7 9/9] drm/i915: Set Infoframe for non modeset case for HDR Uma Shankar
2019-04-08 9:31 ` [v7 0/9] Add HDR Metadata Parsing and handling in DRM layer Sharma, Shashank
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1554236430-7466-7-git-send-email-uma.shankar@intel.com \
--to=uma.shankar@intel.com \
--cc=dcastagna@chromium.org \
--cc=dri-devel@lists.freedesktop.org \
--cc=emil.l.velikov@gmail.com \
--cc=intel-gfx@lists.freedesktop.org \
--cc=maarten.lankhorst@intel.com \
--cc=seanpaul@chromium.org \
--cc=ville.syrjala@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).