LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Tina Zhang <tina.zhang@intel.com>
To: alex.williamson@redhat.com, kraxel@redhat.com,
	chris@chris-wilson.co.uk, joonas.lahtinen@linux.intel.com,
	zhenyuw@linux.intel.com, zhiyuan.lv@intel.com,
	zhi.a.wang@intel.com, kevin.tian@intel.com, daniel@ffwll.ch,
	kwankhede@nvidia.com, hang.yuan@intel.com
Cc: "Tina Zhang" <tina.zhang@intel.com>,
	intel-gfx@lists.freedesktop.org,
	intel-gvt-dev@lists.freedesktop.org,
	linux-kernel@vger.kernel.org,
	"Ville Syrjälä" <ville.syrjala@linux.intel.com>,
	"Dave Airlie" <airlied@redhat.com>,
	"Daniel Vetter" <daniel.vetter@ffwll.ch>
Subject: [PATCH v19 2/6] drm: Introduce RGB 64-bit 16:16:16:16 float format
Date: Thu, 23 Nov 2017 16:26:33 +0800	[thread overview]
Message-ID: <1511425598-2437-3-git-send-email-tina.zhang@intel.com> (raw)
In-Reply-To: <1511425598-2437-1-git-send-email-tina.zhang@intel.com>

The RGB 64-bit 16:16:16:16 float pixel format is needed by some Apps in
windows. The float format in each component is 1:5:10 MSb-sign:exponent:
fraction.

This patch is to introduce the format to drm, so that the windows guest's
framebuffer in this kind of format can be recognized and used by linux
host.

v14:
- add some details about the float pixel format. (Daniel)
- add F suffix to the defined name. (Daniel)

v12:
- send to dri-devel at lists.freedesktop.org. (Ville)

v9:
- separated from framebuffer decoder patch. (Zhenyu) (Xiaoguang)

Signed-off-by: Tina Zhang <tina.zhang@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
---
 include/uapi/drm/drm_fourcc.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
index 3ad838d..391d2e6 100644
--- a/include/uapi/drm/drm_fourcc.h
+++ b/include/uapi/drm/drm_fourcc.h
@@ -113,6 +113,10 @@ extern "C" {
 
 #define DRM_FORMAT_AYUV		fourcc_code('A', 'Y', 'U', 'V') /* [31:0] A:Y:Cb:Cr 8:8:8:8 little endian */
 
+/* 64 bpp RGB 16:16:16:16 Floating Point */
+#define DRM_FORMAT_XRGB161616F  fourcc_code('X', 'R', '3', 'F') /* [63:0] x:R:G:B 16:16:16:16 little endian */
+#define DRM_FORMAT_XBGR161616F  fourcc_code('X', 'B', '3', 'F') /* [63:0] x:B:G:R 16:16:16:16 little endian */
+
 /*
  * 2 plane RGB + A
  * index 0 = RGB plane, same format as the corresponding non _A8 format has
-- 
2.7.4

  parent reply	other threads:[~2017-11-23  8:32 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-23  8:26 [PATCH v19 0/6] drm/i915/gvt: Dma-buf support for GVT-g Tina Zhang
2017-11-23  8:26 ` [PATCH v19 1/6] drm/i915/gvt: Add framebuffer decoder support Tina Zhang
2017-11-23  8:26 ` Tina Zhang [this message]
2017-11-23  8:26 ` [PATCH v19 3/6] drm/i915/gvt: Add RGB 64-bit 16:16:16:16 float format Tina Zhang
2017-11-23  8:26 ` [PATCH v19 4/6] vfio: ABI for mdev display dma-buf operation Tina Zhang
2017-11-23  8:26 ` [PATCH v19 5/6] drm/i915/gvt: Dmabuf support for GVT-g Tina Zhang
2017-11-23  8:26 ` [PATCH v19 6/6] drm/i915/gvt: Handle orphan dmabuf_objs Tina Zhang

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=1511425598-2437-3-git-send-email-tina.zhang@intel.com \
    --to=tina.zhang@intel.com \
    --cc=airlied@redhat.com \
    --cc=alex.williamson@redhat.com \
    --cc=chris@chris-wilson.co.uk \
    --cc=daniel.vetter@ffwll.ch \
    --cc=daniel@ffwll.ch \
    --cc=hang.yuan@intel.com \
    --cc=intel-gfx@lists.freedesktop.org \
    --cc=intel-gvt-dev@lists.freedesktop.org \
    --cc=joonas.lahtinen@linux.intel.com \
    --cc=kevin.tian@intel.com \
    --cc=kraxel@redhat.com \
    --cc=kwankhede@nvidia.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=ville.syrjala@linux.intel.com \
    --cc=zhenyuw@linux.intel.com \
    --cc=zhi.a.wang@intel.com \
    --cc=zhiyuan.lv@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).