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Diffstat (limited to 'drivers/gpu/drm/vc4/vc4_drv.c')
-rw-r--r--drivers/gpu/drm/vc4/vc4_drv.c19
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c
index a459745e96f7..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>
@@ -137,9 +153,6 @@ static struct drm_driver vc4_drm_driver = {
.irq_postinstall = vc4_irq_postinstall,
.irq_uninstall = vc4_irq_uninstall,
- .enable_vblank = vc4_enable_vblank,
- .disable_vblank = vc4_disable_vblank,
- .get_vblank_counter = drm_vblank_no_hw_counter,
.get_scanout_position = vc4_crtc_get_scanoutpos,
.get_vblank_timestamp = vc4_crtc_get_vblank_timestamp,