drm/komeda: Attach komeda_dev to DRM-KMS

Add komeda_kms abstracton to attach komeda_dev to DRM-KMS
  CRTC: according to the komeda_pipeline
  PLANE: according to komeda_layer (layer input pipeline)
  PRIVATE_OBJS: komeda_pipeline/component all will be treat as private_objs

komeda_kms is for connecting DRM-KMS and komeda_dev, like reporting the
kms object properties according to the komeda_dev, and pass/convert KMS's
requirement to komeda_dev.

Changes in v4:
- Set drm_atomic_helper_check as mode_config->atomic_check.

Changes in v3:
- Fixed style problem found by checkpatch.pl --strict.

Changes in v2:
- Unified abbreviation of "pipeline" to "pipe".

Signed-off-by: James Qian Wang (Arm Technology China) <james.qian.wang@arm.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c
index dd386d82d143..2bdd189b041d 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c
@@ -10,9 +10,11 @@
 #include <linux/component.h>
 #include <drm/drm_of.h>
 #include "komeda_dev.h"
+#include "komeda_kms.h"
 
 struct komeda_drv {
 	struct komeda_dev *mdev;
+	struct komeda_kms_dev *kms;
 };
 
 static void komeda_unbind(struct device *dev)
@@ -22,6 +24,7 @@ static void komeda_unbind(struct device *dev)
 	if (!mdrv)
 		return;
 
+	komeda_kms_detach(mdrv->kms);
 	komeda_dev_destroy(mdrv->mdev);
 
 	dev_set_drvdata(dev, NULL);
@@ -43,10 +46,19 @@ static int komeda_bind(struct device *dev)
 		goto free_mdrv;
 	}
 
+	mdrv->kms = komeda_kms_attach(mdrv->mdev);
+	if (IS_ERR(mdrv->kms)) {
+		err = PTR_ERR(mdrv->kms);
+		goto destroy_mdev;
+	}
+
 	dev_set_drvdata(dev, mdrv);
 
 	return 0;
 
+destroy_mdev:
+	komeda_dev_destroy(mdrv->mdev);
+
 free_mdrv:
 	devm_kfree(dev, mdrv);
 	return err;