011f2c26f1
As usual these patches were extracted and rebased from the raspberry pi repo: https://github.com/raspberrypi/linux/tree/rpi-4.4.y Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
38 lines
1.3 KiB
Diff
38 lines
1.3 KiB
Diff
From 79c9521559f8c8249bf1062353bfd3b710d939c4 Mon Sep 17 00:00:00 2001
|
|
From: Eric Anholt <eric@anholt.net>
|
|
Date: Sat, 2 Jul 2016 14:14:27 -0700
|
|
Subject: [PATCH] drm/vc4: Add a getparam to signal support for branches.
|
|
|
|
Userspace needs to know if it can create shaders that do branching.
|
|
Otherwise, for backwards compatibility with old kernels it needs to
|
|
lower if statements to conditional assignments.
|
|
|
|
Signed-off-by: Eric Anholt <eric@anholt.net>
|
|
(cherry picked from commit 7363cee5b467c31dc3af2ac98df0634bb8bbc668)
|
|
---
|
|
drivers/gpu/drm/vc4/vc4_drv.c | 3 +++
|
|
include/uapi/drm/vc4_drm.h | 1 +
|
|
2 files changed, 4 insertions(+)
|
|
|
|
--- a/drivers/gpu/drm/vc4/vc4_drv.c
|
|
+++ b/drivers/gpu/drm/vc4/vc4_drv.c
|
|
@@ -97,6 +97,9 @@ static int vc4_get_param_ioctl(struct dr
|
|
args->value = V3D_READ(V3D_IDENT2);
|
|
pm_runtime_put(&vc4->v3d->pdev->dev);
|
|
break;
|
|
+ case DRM_VC4_PARAM_SUPPORTS_BRANCHES:
|
|
+ args->value = true;
|
|
+ break;
|
|
default:
|
|
DRM_DEBUG("Unknown parameter %d\n", args->param);
|
|
return -EINVAL;
|
|
--- a/include/uapi/drm/vc4_drm.h
|
|
+++ b/include/uapi/drm/vc4_drm.h
|
|
@@ -285,6 +285,7 @@ struct drm_vc4_get_hang_state {
|
|
#define DRM_VC4_PARAM_V3D_IDENT0 0
|
|
#define DRM_VC4_PARAM_V3D_IDENT1 1
|
|
#define DRM_VC4_PARAM_V3D_IDENT2 2
|
|
+#define DRM_VC4_PARAM_SUPPORTS_BRANCHES 3
|
|
|
|
struct drm_vc4_get_param {
|
|
__u32 param;
|