[PATCH v2 5/9] drm/sun4i: backend: Save pointer to device tree node

[Chen-Yu Tsai]

Save a pointer to the backend's underlying device tree node in its
data structure. This will be used later for downstream tcons to find
and match their respective upstream backends.

Signed-off-by: Chen-Yu Tsai <w...@csie.org>
---
 drivers/gpu/drm/sun4i/sun4i_backend.c | 1 +
 drivers/gpu/drm/sun4i/sun4i_backend.h | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/sun4i/sun4i_backend.c 
b/drivers/gpu/drm/sun4i/sun4i_backend.c
index 0b4222312e49..e9eca057ff35 100644
--- a/drivers/gpu/drm/sun4i/sun4i_backend.c
+++ b/drivers/gpu/drm/sun4i/sun4i_backend.c
@@ -352,6 +352,7 @@ static int sun4i_backend_bind(struct device *dev, struct 
device *master,
                return -ENOMEM;
        dev_set_drvdata(dev, backend);
 
+       backend->node = dev->of_node;
        backend->id = sun4i_backend_of_get_id(dev->of_node);
        if (backend->id < 0)
                return backend->id;
diff --git a/drivers/gpu/drm/sun4i/sun4i_backend.h 
b/drivers/gpu/drm/sun4i/sun4i_backend.h
index 45b7fc110590..6327a2985fe6 100644
--- a/drivers/gpu/drm/sun4i/sun4i_backend.h
+++ b/drivers/gpu/drm/sun4i/sun4i_backend.h
@@ -15,6 +15,7 @@
 
 #include <linux/clk.h>
 #include <linux/list.h>
+#include <linux/of.h>
 #include <linux/regmap.h>
 #include <linux/reset.h>
 
@@ -140,6 +141,7 @@
 #define SUN4I_BACKEND_PIPE_OFF(p)              (0x5000 + (0x400 * (p)))
 
 struct sun4i_backend {
+       struct device_node      *node;
        struct regmap           *regs;
 
        struct reset_control    *reset;
-- 
2.11.0