this patch separates sub driver's probe call and encoder/connector creation
so that exynos drm core module can take exception when some operation was
failed properly.
Signed-off-by: Inki Dae <inki.dae at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
---
drivers/gpu/drm/exynos/exynos_drm_core.c | 93 +++++++++++++++++++++---------
1 files changed, 65 insertions(+), 28 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_core.c
b/drivers/gpu/drm/exynos/exynos_drm_core.c
index 84dd099..1c8d5fe 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_core.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_core.c
@@ -34,30 +34,15 @@
static LIST_HEAD(exynos_drm_subdrv_list);
-static int exynos_drm_subdrv_probe(struct drm_device *dev,
+static int exynos_drm_create_enc_conn(struct drm_device *dev,
struct exynos_drm_subdrv *subdrv)
{
struct drm_encoder *encoder;
struct drm_connector *connector;
+ int ret;
DRM_DEBUG_DRIVER("%s\n", __FILE__);
- if (subdrv->probe) {
- int ret;
-
- /*
- * this probe callback would be called by sub driver
- * after setting of all resources to this sub driver,
- * such as clock, irq and register map are done or by load()
- * of exynos drm driver.
- *
- * P.S. note that this driver is considered for modularization.
- */
- ret = subdrv->probe(dev, subdrv->dev);
- if (ret)
- return ret;
- }
-
if (!subdrv->manager)
return 0;
@@ -78,24 +63,22 @@ static int exynos_drm_subdrv_probe(struct drm_device *dev,
connector = exynos_drm_connector_create(dev, encoder);
if (!connector) {
DRM_ERROR("failed to create connector\n");
- encoder->funcs->destroy(encoder);
- return -EFAULT;
+ ret = -EFAULT;
+ goto err_destroy_encoder;
}
subdrv->encoder = encoder;
subdrv->connector = connector;
return 0;
+
+err_destroy_encoder:
+ encoder->funcs->destroy(encoder);
+ return ret;
}
-static void exynos_drm_subdrv_remove(struct drm_device *dev,
- struct exynos_drm_subdrv *subdrv)
+static void exynos_drm_destroy_enc_conn(struct exynos_drm_subdrv *subdrv)
{
- DRM_DEBUG_DRIVER("%s\n", __FILE__);
-
- if (subdrv->remove)
- subdrv->remove(dev);
-
if (subdrv->encoder) {
struct drm_encoder *encoder = subdrv->encoder;
encoder->funcs->destroy(encoder);
@@ -109,9 +92,48 @@ static void exynos_drm_subdrv_remove(struct drm_device *dev,
}
}
+static int exynos_drm_subdrv_probe(struct drm_device *dev,
+ struct exynos_drm_subdrv *subdrv)
+{
+ if (subdrv->probe) {
+ int ret;
+
+ subdrv->drm_dev = dev;
+
+ /*
+ * this probe callback would be called by sub driver
+ * after setting of all resources to this sub driver,
+ * such as clock, irq and register map are done or by load()
+ * of exynos drm driver.
+ *
+ * P.S. note that this driver is considered for modularization.
+ */
+ ret = subdrv->probe(dev, subdrv->dev);
+ if (ret)
+ return ret;
+ }
+
+ if (!subdrv->manager)
+ return -EINVAL;
+
+ subdrv->manager->dev = subdrv->dev;
+
+ return 0;
+}
+
+static void exynos_drm_subdrv_remove(struct drm_device *dev,
+ struct exynos_drm_subdrv *subdrv)
+{
+ DRM_DEBUG_DRIVER("%s\n", __FILE__);
+
+ if (subdrv->remove)
+ subdrv->remove(dev, subdrv->dev);
+}
+
int exynos_drm_device_register(struct drm_device *dev)
{
struct exynos_drm_subdrv *subdrv, *n;
+ unsigned int fine_cnt = 0;
int err;
DRM_DEBUG_DRIVER("%s\n", __FILE__);
@@ -120,14 +142,27 @@ int exynos_drm_device_register(struct drm_device *dev)
return -EINVAL;
list_for_each_entry_safe(subdrv, n, &exynos_drm_subdrv_list, list) {
- subdrv->drm_dev = dev;
err = exynos_drm_subdrv_probe(dev, subdrv);
if (err) {
DRM_DEBUG("exynos drm subdrv probe failed.\n");
list_del(&subdrv->list);
+ continue;
}
+
+ err = exynos_drm_create_enc_conn(dev, subdrv);
+ if (err) {
+ DRM_DEBUG("failed to create encoder and connector.\n");
+ exynos_drm_subdrv_remove(dev, subdrv);
+ list_del(&subdrv->list);
+ continue;
+ }
+
+ fine_cnt++;
}
+ if (!fine_cnt)
+ return -EINVAL;
+
return 0;
}
EXPORT_SYMBOL_GPL(exynos_drm_device_register);
@@ -143,8 +178,10 @@ int exynos_drm_device_unregister(struct drm_device *dev)
return -EINVAL;
}
- list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list)
+ list_for_each_entry(subdrv, &exynos_drm_subdrv_list, list) {
exynos_drm_subdrv_remove(dev, subdrv);
+ exynos_drm_destroy_enc_conn(subdrv);
+ }
return 0;
}
--
1.7.4.1
