gpu: nvgpu: Disable only channel at zcull bind

At zcull bind we disable whole GR engine. This is unnecessary, so
instead disable only the channel and make sure it's unloaded.

Introduces also an API in fifo_gk20a.c to do the channel disable.

gr_gk20a_ctx_zcull_setup() was always passed true as last parameter,
so remove parameter.

Change-Id: I7ae6e101ec7d1ab3f6ee4e9bcc442d23dbd21247
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/787570

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gm20b/fifo_gm20b.c b/drivers/gpu/nvgpu/gm20b/fifo_gm20b.c
index 530df04a..0e736373 100644
--- a/drivers/gpu/nvgpu/gm20b/fifo_gm20b.c
+++ b/drivers/gpu/nvgpu/gm20b/fifo_gm20b.c
@@ -109,6 +109,7 @@ void gm20b_init_fifo(struct gpu_ops *gops)
         gops->fifo.bind_channel = channel_gm20b_bind;
         gops->fifo.unbind_channel = channel_gk20a_unbind;
         gops->fifo.disable_channel = channel_gk20a_disable;
+        gops->fifo.enable_channel = channel_gk20a_enable;
         gops->fifo.alloc_inst = channel_gk20a_alloc_inst;
         gops->fifo.free_inst = channel_gk20a_free_inst;
         gops->fifo.setup_ramfc = channel_gk20a_setup_ramfc;