gpu: nvgpu: Allow disabling CDE functionality

CDE is a Tegra SoC specific feature. Add new config option
CONFIG_NVGPU_SUPPORT_CDE and #ifdef all CDE specific code with it.

JIRA NVGPU-4

Change-Id: I6f0b0047d6ba2b5c36c2eb9b8a1514776741f5b5
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1648002
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 8 insertions, 3 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/ioctl_ctrl.c b/drivers/gpu/nvgpu/common/linux/ioctl_ctrl.c
index 0b449692..71a9bee6 100644
--- a/drivers/gpu/nvgpu/common/linux/ioctl_ctrl.c
+++ b/drivers/gpu/nvgpu/common/linux/ioctl_ctrl.c
@@ -333,10 +333,12 @@ static int gk20a_ctrl_prepare_compressible_read(
                 struct gk20a *g,
                 struct nvgpu_gpu_prepare_compressible_read_args *args)
 {
+        int ret = -ENOSYS;
+
+#ifdef CONFIG_NVGPU_SUPPORT_CDE
         struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
         struct nvgpu_fence fence;
         struct gk20a_fence *fence_out = NULL;
-        int ret = 0;
         int flags = args->submit_flags;
 
         fence.id = args->fence.syncpt_id;
@@ -377,18 +379,21 @@ static int gk20a_ctrl_prepare_compressible_read(
                 }
         }
         gk20a_fence_put(fence_out);
+#endif
 
-        return 0;
+        return ret;
 }
 
 static int gk20a_ctrl_mark_compressible_write(
                 struct gk20a *g,
                 struct nvgpu_gpu_mark_compressible_write_args *args)
 {
-        int ret;
+        int ret = -ENOSYS;
 
+#ifdef CONFIG_NVGPU_SUPPORT_CDE
         ret = gk20a_mark_compressible_write(g, args->handle,
                         args->valid_compbits, args->offset, args->zbc_color);
+#endif
 
         return ret;
 }