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path: root/drivers/gpu/host1x/bus.c
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Diffstat (limited to 'drivers/gpu/host1x/bus.c')
-rw-r--r--drivers/gpu/host1x/bus.c32
1 files changed, 31 insertions, 1 deletions
diff --git a/drivers/gpu/host1x/bus.c b/drivers/gpu/host1x/bus.c
index c9a637d9417e..66d60f943f33 100644
--- a/drivers/gpu/host1x/bus.c
+++ b/drivers/gpu/host1x/bus.c
@@ -316,6 +316,36 @@ static int host1x_device_match(struct device *dev, struct device_driver *drv)
return strcmp(dev_name(dev), drv->name) == 0;
}
+static int host1x_device_uevent(struct device *dev,
+ struct kobj_uevent_env *env)
+{
+ struct device_node *np = dev->parent->of_node;
+ unsigned int count = 0;
+ struct property *p;
+ const char *compat;
+
+ /*
+ * This duplicates most of of_device_uevent(), but the latter cannot
+ * be called from modules and operates on dev->of_node, which is not
+ * available in this case.
+ *
+ * Note that this is really only needed for backwards compatibility
+ * with libdrm, which parses this information from sysfs and will
+ * fail if it can't find the OF_FULLNAME, specifically.
+ */
+ add_uevent_var(env, "OF_NAME=%pOFn", np);
+ add_uevent_var(env, "OF_FULLNAME=%pOF", np);
+
+ of_property_for_each_string(np, "compatible", p, compat) {
+ add_uevent_var(env, "OF_COMPATIBLE_%u=%s", count, compat);
+ count++;
+ }
+
+ add_uevent_var(env, "OF_COMPATIBLE_N=%u", count);
+
+ return 0;
+}
+
static int host1x_dma_configure(struct device *dev)
{
return of_dma_configure(dev, dev->of_node, true);
@@ -333,6 +363,7 @@ static const struct dev_pm_ops host1x_device_pm_ops = {
struct bus_type host1x_bus_type = {
.name = "host1x",
.match = host1x_device_match,
+ .uevent = host1x_device_uevent,
.dma_configure = host1x_dma_configure,
.pm = &host1x_device_pm_ops,
};
@@ -419,7 +450,6 @@ static int host1x_device_add(struct host1x *host1x,
device->dev.dma_mask = &device->dev.coherent_dma_mask;
dev_set_name(&device->dev, "%s", driver->driver.name);
device->dev.release = host1x_device_release;
- device->dev.of_node = host1x->dev->of_node;
device->dev.bus = &host1x_bus_type;
device->dev.parent = host1x->dev;