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authorEric Anholt <eric@anholt.net>2017-02-27 21:11:44 +0100
committerEric Anholt <eric@anholt.net>2017-02-28 21:51:49 +0100
commitb787963ae243a4a25057c9d1285a600e2c3f6237 (patch)
tree0fd7b6029e5f4edf98b4065bace9953d02e078e2
parentdrm/vc4: Extend and edit documentation for output from the RST (diff)
downloadlinux-b787963ae243a4a25057c9d1285a600e2c3f6237.tar.xz
linux-b787963ae243a4a25057c9d1285a600e2c3f6237.zip
drm/vc4: Add a paragraph at the top of vc4 docs introducing what it is.
This makes for more sensible documentation of the whole module than jumping straight into the details of display. Signed-off-by: Eric Anholt <eric@anholt.net> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20170227201144.10970-5-eric@anholt.net
-rw-r--r--Documentation/gpu/vc4.rst3
-rw-r--r--drivers/gpu/drm/vc4/vc4_drv.c16
2 files changed, 19 insertions, 0 deletions
diff --git a/Documentation/gpu/vc4.rst b/Documentation/gpu/vc4.rst
index b06117b5d495..5df1d98b9544 100644
--- a/Documentation/gpu/vc4.rst
+++ b/Documentation/gpu/vc4.rst
@@ -2,6 +2,9 @@
drm/vc4 Broadcom VC4 Graphics Driver
=====================================
+.. kernel-doc:: drivers/gpu/drm/vc4/vc4_drv.c
+ :doc: Broadcom VC4 Graphics Driver
+
Display Hardware Handling
=========================
diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c
index 4f93328a2f20..205c1961ffb4 100644
--- a/drivers/gpu/drm/vc4/vc4_drv.c
+++ b/drivers/gpu/drm/vc4/vc4_drv.c
@@ -7,6 +7,22 @@
* published by the Free Software Foundation.
*/
+/**
+ * DOC: Broadcom VC4 Graphics Driver
+ *
+ * The Broadcom VideoCore 4 (present in the Raspberry Pi) contains a
+ * OpenGL ES 2.0-compatible 3D engine called V3D, and a highly
+ * configurable display output pipeline that supports HDMI, DSI, DPI,
+ * and Composite TV output.
+ *
+ * The 3D engine also has an interface for submitting arbitrary
+ * compute shader-style jobs using the same shader processor as is
+ * used for vertex and fragment shaders in GLES 2.0. However, given
+ * that the hardware isn't able to expose any standard interfaces like
+ * OpenGL compute shaders or OpenCL, it isn't supported by this
+ * driver.
+ */
+
#include <linux/clk.h>
#include <linux/component.h>
#include <linux/device.h>