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authorHans de Goede <hdegoede@redhat.com>2021-08-17 23:51:54 +0200
committerHans de Goede <hdegoede@redhat.com>2021-08-20 12:35:59 +0200
commit331de7db3012b8e8e8d77beebc8f743e288d4c42 (patch)
tree616ade37e28ed694b604e7f49f5713170ef11ad5 /drivers/gpu/drm/drm_sysfs.c
parentdrm/bridge: ti-sn65dsi86: Avoid creating multiple connectors (diff)
downloadlinux-331de7db3012b8e8e8d77beebc8f743e288d4c42.tar.xz
linux-331de7db3012b8e8e8d77beebc8f743e288d4c42.zip
drm/connector: Give connector sysfs devices there own device_type
Give connector sysfs devices there own device_type, this allows us to check if a device passed to functions dealing with generic devices is a drm_connector or not. A check like this is necessary in the drm_connector_acpi_bus_match() function added in the next patch in this series. Tested-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Link: https://lore.kernel.org/r/20210817215201.795062-2-hdegoede@redhat.com
Diffstat (limited to 'drivers/gpu/drm/drm_sysfs.c')
-rw-r--r--drivers/gpu/drm/drm_sysfs.c50
1 files changed, 37 insertions, 13 deletions
diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
index 968a9560b4aa..fb97279211d4 100644
--- a/drivers/gpu/drm/drm_sysfs.c
+++ b/drivers/gpu/drm/drm_sysfs.c
@@ -50,6 +50,10 @@ static struct device_type drm_sysfs_device_minor = {
.name = "drm_minor"
};
+static struct device_type drm_sysfs_device_connector = {
+ .name = "drm_connector",
+};
+
struct class *drm_class;
static char *drm_devnode(struct device *dev, umode_t *mode)
@@ -102,6 +106,11 @@ void drm_sysfs_destroy(void)
drm_class = NULL;
}
+static void drm_sysfs_release(struct device *dev)
+{
+ kfree(dev);
+}
+
/*
* Connector properties
*/
@@ -273,27 +282,47 @@ static const struct attribute_group *connector_dev_groups[] = {
int drm_sysfs_connector_add(struct drm_connector *connector)
{
struct drm_device *dev = connector->dev;
+ struct device *kdev;
+ int r;
if (connector->kdev)
return 0;
- connector->kdev =
- device_create_with_groups(drm_class, dev->primary->kdev, 0,
- connector, connector_dev_groups,
- "card%d-%s", dev->primary->index,
- connector->name);
+ kdev = kzalloc(sizeof(*kdev), GFP_KERNEL);
+ if (!kdev)
+ return -ENOMEM;
+
+ device_initialize(kdev);
+ kdev->class = drm_class;
+ kdev->type = &drm_sysfs_device_connector;
+ kdev->parent = dev->primary->kdev;
+ kdev->groups = connector_dev_groups;
+ kdev->release = drm_sysfs_release;
+ dev_set_drvdata(kdev, connector);
+
+ r = dev_set_name(kdev, "card%d-%s", dev->primary->index, connector->name);
+ if (r)
+ goto err_free;
+
DRM_DEBUG("adding \"%s\" to sysfs\n",
connector->name);
- if (IS_ERR(connector->kdev)) {
- DRM_ERROR("failed to register connector device: %ld\n", PTR_ERR(connector->kdev));
- return PTR_ERR(connector->kdev);
+ r = device_add(kdev);
+ if (r) {
+ drm_err(dev, "failed to register connector device: %d\n", r);
+ goto err_free;
}
+ connector->kdev = kdev;
+
if (connector->ddc)
return sysfs_create_link(&connector->kdev->kobj,
&connector->ddc->dev.kobj, "ddc");
return 0;
+
+err_free:
+ put_device(kdev);
+ return r;
}
void drm_sysfs_connector_remove(struct drm_connector *connector)
@@ -374,11 +403,6 @@ void drm_sysfs_connector_status_event(struct drm_connector *connector,
}
EXPORT_SYMBOL(drm_sysfs_connector_status_event);
-static void drm_sysfs_release(struct device *dev)
-{
- kfree(dev);
-}
-
struct device *drm_sysfs_minor_alloc(struct drm_minor *minor)
{
const char *minor_str;