gpu: nvgpu: use nvgpu specific nvhost APIs

Remove use of linux specifix header files
<linux/nvhost.h> and <linux/nvhost_ioctl.h>
and use nvgpu specific header file <nvgpu/nvhost.h>
instead
This is needed to remove all Linux dependencies
from nvgpu driver

Replace all nvhost_*() calls by
nvgpu_nvhost_*() calls from new nvgpu library

Remove platform device pointer host1x_dev
from struct gk20a and add struct
nvgpu_nvhost_dev instead

Jira NVGPU-29

Change-Id: Ia7af70602cfc16f9ccc380752538c05a9cbb8a67
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1489726
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>

1 files changed, 6 insertions, 24 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/platform_vgpu_tegra.c b/drivers/gpu/nvgpu/gk20a/platform_vgpu_tegra.c
index 049d394e..e33fc29f 100644
--- a/drivers/gpu/nvgpu/gk20a/platform_vgpu_tegra.c
+++ b/drivers/gpu/nvgpu/gk20a/platform_vgpu_tegra.c
@@ -13,38 +13,20 @@
  * more details.
  */
 
-#include <linux/of_platform.h>
-
 #include "gk20a.h"
 #include "hal_gk20a.h"
 #include "platform_gk20a.h"
 
+#include <nvgpu/nvhost.h>
+
 static int gk20a_tegra_probe(struct device *dev)
 {
+#ifdef CONFIG_TEGRA_GK20A_NVHOST
         struct gk20a_platform *platform = dev_get_drvdata(dev);
-        struct device_node *np = dev->of_node;
-        const __be32 *host1x_ptr;
-        struct platform_device *host1x_pdev = NULL;
-
-        host1x_ptr = of_get_property(np, "nvidia,host1x", NULL);
-        if (host1x_ptr) {
-                struct device_node *host1x_node =
-                        of_find_node_by_phandle(be32_to_cpup(host1x_ptr));
-
-                host1x_pdev = of_find_device_by_node(host1x_node);
-                if (!host1x_pdev) {
-                        dev_warn(dev, "host1x device not available");
-                        return -EPROBE_DEFER;
-                }
-
-        } else {
-                host1x_pdev = to_platform_device(dev->parent);
-                dev_warn(dev, "host1x reference not found. assuming host1x to be parent");
-        }
-
-        platform->g->host1x_dev = host1x_pdev;
-
+        return nvgpu_get_nvhost_dev(platform->g);
+#else
         return 0;
+#endif
 }
 
 struct gk20a_platform vgpu_tegra_platform = {