[PATCH 06/22] drm/hisilicon/kirin: Use drm_fb_cma_fbdev_init/fini()

[Noralf Trønnes]

Use drm_fb_cma_fbdev_init() and drm_fb_cma_fbdev_fini() which relies on
the fact that drm_device holds a pointer to the drm_fb_helper structure.
This means that the driver doesn't have to keep track of that.
Also use the drm_fb_helper functions directly.

Cc: Xinliang Liu <z.liuxinliang at hisilicon.com>
Cc: Rongrong Zou <zourongrong at gmail.com>
Cc: Xinwei Kong <kong.kongxinwei at hisilicon.com>
Cc: Chen Feng <puck.chen at hisilicon.com>
Signed-off-by: Noralf Trønnes <noralf at tronnes.org>
---
 drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c | 35 ++++---------------------
 drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h |  4 ---
 2 files changed, 5 insertions(+), 34 deletions(-)

diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
index ddb0403f1975..e3673efbf1c2 100644
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
@@ -21,6 +21,7 @@
 
 #include <drm/drmP.h>
 #include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_fb_helper.h>
 #include <drm/drm_fb_cma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_atomic_helper.h>
@@ -33,32 +34,17 @@ static struct kirin_dc_ops *dc_ops;
 
 static int kirin_drm_kms_cleanup(struct drm_device *dev)
 {
-	struct kirin_drm_private *priv = dev->dev_private;
-
-	if (priv->fbdev) {
-		drm_fbdev_cma_fini(priv->fbdev);
-		priv->fbdev = NULL;
-	}
-
+	drm_fb_cma_fbdev_fini(dev);
 	drm_kms_helper_poll_fini(dev);
 	dc_ops->cleanup(to_platform_device(dev->dev));
 	drm_mode_config_cleanup(dev);
-	devm_kfree(dev->dev, priv);
-	dev->dev_private = NULL;
 
 	return 0;
 }
 
-static void kirin_fbdev_output_poll_changed(struct drm_device *dev)
-{
-	struct kirin_drm_private *priv = dev->dev_private;
-
-	drm_fbdev_cma_hotplug_event(priv->fbdev);
-}
-
 static const struct drm_mode_config_funcs kirin_drm_mode_config_funcs = {
 	.fb_create = drm_gem_fb_create,
-	.output_poll_changed = kirin_fbdev_output_poll_changed,
+	.output_poll_changed = drm_fb_helper_output_poll_changed,
 	.atomic_check = drm_atomic_helper_check,
 	.atomic_commit = drm_atomic_helper_commit,
 };
@@ -76,14 +62,8 @@ static void kirin_drm_mode_config_init(struct drm_device *dev)
 
 static int kirin_drm_kms_init(struct drm_device *dev)
 {
-	struct kirin_drm_private *priv;
 	int ret;
 
-	priv = devm_kzalloc(dev->dev, sizeof(*priv), GFP_KERNEL);
-	if (!priv)
-		return -ENOMEM;
-
-	dev->dev_private = priv;
 	dev_set_drvdata(dev->dev, dev);
 
 	/* dev->mode_config initialization */
@@ -117,12 +97,9 @@ static int kirin_drm_kms_init(struct drm_device *dev)
 	/* init kms poll for handling hpd */
 	drm_kms_helper_poll_init(dev);
 
-	priv->fbdev = drm_fbdev_cma_init(dev, 32,
-					 dev->mode_config.num_connector);
-
-	if (IS_ERR(priv->fbdev)) {
+	ret = drm_fb_cma_fbdev_init(dev, 32, 0);
+	if (ret) {
 		DRM_ERROR("failed to initialize fbdev.\n");
-		ret = PTR_ERR(priv->fbdev);
 		goto err_cleanup_poll;
 	}
 	return 0;
@@ -135,8 +112,6 @@ static int kirin_drm_kms_init(struct drm_device *dev)
 	dc_ops->cleanup(to_platform_device(dev->dev));
 err_mode_config_cleanup:
 	drm_mode_config_cleanup(dev);
-	devm_kfree(dev->dev, priv);
-	dev->dev_private = NULL;
 
 	return ret;
 }
diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h
index 56cb62df065c..ad027d1cc826 100644
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h
@@ -19,10 +19,6 @@ struct kirin_dc_ops {
 	void (*cleanup)(struct platform_device *pdev);
 };
 
-struct kirin_drm_private {
-	struct drm_fbdev_cma *fbdev;
-};
-
 extern const struct kirin_dc_ops ade_dc_ops;
 
 #endif /* __KIRIN_DRM_DRV_H__ */
-- 
2.14.2