video: tegra: host: enumerate pva and dla from 0

Even if pva0 or dla0 is disabled in the device tree
the dev nodes for pva1 and dla1 should be enumerated
from 0.

To achieve this the patch introduces families of engines
and dynamically creates proper devfs_name for them.

JIRA VFND-4904

Change-Id: I3c69381f212024cf9d6cb5af8c104f3ca5392863
Signed-off-by: Damian Halas <dhalas@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1743013
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/nvhost.h b/include/linux/nvhost.h
index 9421f36f2..d68a48a5d 100644
--- a/include/linux/nvhost.h
+++ b/include/linux/nvhost.h
@@ -185,6 +185,7 @@ struct nvhost_device_data {
         bool            poweron_reset;  /* Reset the engine before powerup */
         bool            virtual_dev;    /* True if virtualized device */
         char            *devfs_name;    /* Name in devfs */
+        char            *devfs_name_family; /* Core of devfs name */
 
         /* Support aborting the channel with close(channel_fd) */
         bool            support_abort_on_close;