[PATCH 15/22] drm/tilcdc: Use drm_fb_cma_fbdev_init/fini()

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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: Jyri Sarha <jsarha@xxxxxx>
Cc: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
Signed-off-by: Noralf Trønnes <noralf@xxxxxxxxxxx>
---
 drivers/gpu/drm/tilcdc/tilcdc_drv.c | 26 +++++---------------------
 drivers/gpu/drm/tilcdc/tilcdc_drv.h |  2 --
 2 files changed, 5 insertions(+), 23 deletions(-)

diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
index 72ce063aa0d8..091b1025898e 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
@@ -69,12 +69,6 @@ static struct drm_framebuffer *tilcdc_fb_create(struct drm_device *dev,
 	return drm_gem_fb_create(dev, file_priv, mode_cmd);
 }
 
-static void tilcdc_fb_output_poll_changed(struct drm_device *dev)
-{
-	struct tilcdc_drm_private *priv = dev->dev_private;
-	drm_fbdev_cma_hotplug_event(priv->fbdev);
-}
-
 static int tilcdc_atomic_check(struct drm_device *dev,
 			       struct drm_atomic_state *state)
 {
@@ -146,7 +140,7 @@ static int tilcdc_commit(struct drm_device *dev,
 
 static const struct drm_mode_config_funcs mode_config_funcs = {
 	.fb_create = tilcdc_fb_create,
-	.output_poll_changed = tilcdc_fb_output_poll_changed,
+	.output_poll_changed = drm_fb_helper_output_poll_changed,
 	.atomic_check = tilcdc_atomic_check,
 	.atomic_commit = tilcdc_commit,
 };
@@ -198,8 +192,7 @@ static void tilcdc_fini(struct drm_device *dev)
 
 	drm_kms_helper_poll_fini(dev);
 
-	if (priv->fbdev)
-		drm_fbdev_cma_fini(priv->fbdev);
+	drm_fb_cma_fbdev_fini(dev);
 
 	drm_irq_uninstall(dev);
 	drm_mode_config_cleanup(dev);
@@ -405,12 +398,9 @@ static int tilcdc_init(struct drm_driver *ddrv, struct device *dev)
 
 	drm_mode_config_reset(ddev);
 
-	priv->fbdev = drm_fbdev_cma_init(ddev, bpp,
-					 ddev->mode_config.num_connector);
-	if (IS_ERR(priv->fbdev)) {
-		ret = PTR_ERR(priv->fbdev);
+	ret = drm_fb_cma_fbdev_init(ddev, bpp, 0);
+	if (ret)
 		goto init_failed;
-	}
 
 	drm_kms_helper_poll_init(ddev);
 
@@ -427,12 +417,6 @@ static int tilcdc_init(struct drm_driver *ddrv, struct device *dev)
 	return ret;
 }
 
-static void tilcdc_lastclose(struct drm_device *dev)
-{
-	struct tilcdc_drm_private *priv = dev->dev_private;
-	drm_fbdev_cma_restore_mode(priv->fbdev);
-}
-
 static irqreturn_t tilcdc_irq(int irq, void *arg)
 {
 	struct drm_device *dev = arg;
@@ -538,7 +522,7 @@ DEFINE_DRM_GEM_CMA_FOPS(fops);
 static struct drm_driver tilcdc_driver = {
 	.driver_features    = (DRIVER_HAVE_IRQ | DRIVER_GEM | DRIVER_MODESET |
 			       DRIVER_PRIME | DRIVER_ATOMIC),
-	.lastclose          = tilcdc_lastclose,
+	.lastclose          = drm_fb_helper_lastclose,
 	.irq_handler        = tilcdc_irq,
 	.gem_free_object_unlocked = drm_gem_cma_free_object,
 	.gem_vm_ops         = &drm_gem_cma_vm_ops,
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.h b/drivers/gpu/drm/tilcdc/tilcdc_drv.h
index 8caa11bc7aec..ead512216669 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_drv.h
+++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.h
@@ -79,8 +79,6 @@ struct tilcdc_drm_private {
 
 	struct workqueue_struct *wq;
 
-	struct drm_fbdev_cma *fbdev;
-
 	struct drm_crtc *crtc;
 
 	unsigned int num_encoders;
-- 
2.14.2

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