gpu: nvgpu: Register as subdomain of host1x

Add gk20a as a sub power domain of host1x. This enforces keeping
host1x on when using gk20a.

Bug 200003112

Change-Id: I08db595bc7b819d86d33fb98af0d8fb4de369463
Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Reviewed-on: http://git-master/r/407006
(cherry picked from commit 009812b3e510518740e9c7e89b8b8b80439fe26a)
Reviewed-on: http://git-master/r/408013
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a_sysfs.c b/drivers/gpu/nvgpu/gk20a/gk20a_sysfs.c
index 2d2cf220..9ebc5bab 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a_sysfs.c
+++ b/drivers/gpu/nvgpu/gk20a/gk20a_sysfs.c
@@ -301,7 +301,7 @@ static ssize_t elpg_enable_store(struct device *device,
          * Since elpg is refcounted, we should not unnecessarily call
          * enable/disable if it is already so.
          */
-        err = gk20a_channel_busy(g->dev);
+        err = gk20a_busy(g->dev);
         if (err)
                 return -EAGAIN;
 
@@ -312,7 +312,7 @@ static ssize_t elpg_enable_store(struct device *device,
                 g->elpg_enabled = false;
                 gk20a_pmu_disable_elpg(g);
         }
-        gk20a_channel_idle(g->dev);
+        gk20a_idle(g->dev);
 
         dev_info(device, "ELPG is %s.\n", g->elpg_enabled ? "enabled" :
                         "disabled");