[PATCH] Revert "imx: make use of loader_open_render_node(..) helper"

[Christian Gmeiner]

This reverts commit 773d6ea6e715d207bda3a53a9dfc8acf686035b0.

Since kernel 4.17 (drm/etnaviv: remove the need for a gpu-subsystem DT
node) the etnaviv DRM driver doesn't have an associated DT node
anymore. This is technically correct, as the etnaviv device is a
virtual device driving multiple hardware devices.

Before 4.17 the userspace had access to the following information:
DRIVER=etnaviv
OF_NAME=gpu-subsystem
OF_FULLNAME=/gpu-subsystem
OF_COMPATIBLE_0=fsl,imx-gpu-subsystem
OF_COMPATIBLE_N=1
MODALIAS=of:Ngpu-subsystemT<NULL>Cfsl,imx-gpu-subsystem
DRIVER=imx-drm
OF_NAME=display-subsystem
OF_FULLNAME=/display-subsystem
OF_COMPATIBLE_0=fsl,imx-display-subsystem
OF_COMPATIBLE_N=1

Afer 4.17:
DRIVER=etnaviv
MODALIAS=platform:etnaviv

The OF node has never been part of the etnaviv UABI, simply due to the
fact that it's still possible to instantiate the etnaviv driver from a
platform file, instead of a devicetree node.

A patch set to fix this problem was send out [1] but it looks like
that a proper solution needs more time to bake.

[1] https://lists.freedesktop.org/archives/dri-devel/2018-October/194651.html

Suggested-by: Emil Velikov <emil.l.velikov at gmail.com>
Signed-off-by: Christian Gmeiner <christian.gmeiner at gmail.com>
---
 src/gallium/winsys/imx/drm/imx_drm_winsys.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/gallium/winsys/imx/drm/imx_drm_winsys.c b/src/gallium/winsys/imx/drm/imx_drm_winsys.c
index 4bd21250315..cd72610b955 100644
--- a/src/gallium/winsys/imx/drm/imx_drm_winsys.c
+++ b/src/gallium/winsys/imx/drm/imx_drm_winsys.c
@@ -26,7 +26,6 @@
 
 #include "imx_drm_public.h"
 #include "etnaviv/drm/etnaviv_drm_public.h"
-#include "loader/loader.h"
 #include "renderonly/renderonly.h"
 
 #include <fcntl.h>
@@ -37,7 +36,7 @@ struct pipe_screen *imx_drm_screen_create(int fd)
    struct renderonly ro = {
       .create_for_resource = renderonly_create_kms_dumb_buffer_for_resource,
       .kms_fd = fd,
-      .gpu_fd = loader_open_render_node("etnaviv")
+      .gpu_fd = open("/dev/dri/renderD128", O_RDWR | O_CLOEXEC)
    };
 
    if (ro.gpu_fd < 0)
-- 
2.17.2