gpu: nvgpu: Get host1x device from DTS

Currently the gpu driver assumes that the GPU is a child of host1x.
This is an invalid assumption and therefore we need to get the host1x
device from device tree based on nvidia,host1x property.

Bug 1311528
Bug 1434573

Change-Id: I097e39369aaa15ab6652cd23f353f88f7c2b9c48
Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Reviewed-on: http://git-master/r/395664
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/debug_gk20a.c b/drivers/gpu/nvgpu/gk20a/debug_gk20a.c
index 3f1f4f0a..f5e0b73d 100644
--- a/drivers/gpu/nvgpu/gk20a/debug_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/debug_gk20a.c
@@ -147,8 +147,7 @@ static void gk20a_debug_show_channel(struct gk20a *g,
                 gk20a_debug_output(o, "%s on syncpt %u (%s) val %u\n",
                         (status == 3 || status == 8) ? "Waiting" : "Waited",
                         pbdma_syncpointb_syncpt_index_v(syncpointb),
-                        nvhost_syncpt_get_name(
-                                to_platform_device(g->dev->dev.parent),
+                        nvhost_syncpt_get_name(g->host1x_dev,
                                 pbdma_syncpointb_syncpt_index_v(syncpointb)),
                         pbdma_syncpointa_payload_v(syncpointa));