diff mbox series

[v3,3/5] drm/rcar-du: Use drm_fbdev_generic_setup()

Message ID 20181128212713.43500-4-noralf@tronnes.org (mailing list archive)
State New, archived
Headers show
Series drm/cma-helper drivers: Use drm_fbdev_generic_setup() | expand

Commit Message

Noralf Trønnes Nov. 28, 2018, 9:27 p.m. UTC 
The CMA helper is already using the drm_fb_helper_generic_probe part of
the generic fbdev emulation. This patch makes full use of the generic
fbdev emulation by using its drm_client callbacks. This means that
drm_mode_config_funcs->output_poll_changed and drm_driver->lastclose are
now handled by the emulation code. Additionally fbdev unregister happens
automatically on drm_dev_unregister().

The drm_fbdev_generic_setup() call is put after drm_dev_register() in the
driver. This is done to highlight the fact that fbdev emulation is an
internal client that makes use of the driver, it is not part of the
driver as such. If fbdev setup fails, an error is printed, but the driver
succeeds probing.

drm_fbdev_generic_setup() handles mode_config.num_connector being zero.
In that case it retries fbdev setup on the next .output_poll_changed.

Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
 drivers/gpu/drm/rcar-du/rcar_du_drv.c | 14 +++-----------
 drivers/gpu/drm/rcar-du/rcar_du_drv.h |  2 --
 drivers/gpu/drm/rcar-du/rcar_du_kms.c | 21 ---------------------
 3 files changed, 3 insertions(+), 34 deletions(-)

Comments

Noralf Trønnes Nov. 29, 2018, 3:38 p.m. UTC | #1 
Den 28.11.2018 22.27, skrev Noralf Trønnes:
> The CMA helper is already using the drm_fb_helper_generic_probe part of
> the generic fbdev emulation. This patch makes full use of the generic
> fbdev emulation by using its drm_client callbacks. This means that
> drm_mode_config_funcs->output_poll_changed and drm_driver->lastclose are
> now handled by the emulation code. Additionally fbdev unregister happens
> automatically on drm_dev_unregister().
>
> The drm_fbdev_generic_setup() call is put after drm_dev_register() in the
> driver. This is done to highlight the fact that fbdev emulation is an
> internal client that makes use of the driver, it is not part of the
> driver as such. If fbdev setup fails, an error is printed, but the driver
> succeeds probing.
>
> drm_fbdev_generic_setup() handles mode_config.num_connector being zero.
> In that case it retries fbdev setup on the next .output_poll_changed.
>
> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
> Acked-by: Sam Ravnborg <sam@ravnborg.org>
> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> ---


Applied to drm-misc-next.


Noralf.


>   drivers/gpu/drm/rcar-du/rcar_du_drv.c | 14 +++-----------
>   drivers/gpu/drm/rcar-du/rcar_du_drv.h |  2 --
>   drivers/gpu/drm/rcar-du/rcar_du_kms.c | 21 ---------------------
>   3 files changed, 3 insertions(+), 34 deletions(-)
>
> diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> index c6770043dcdc..c24aabe3e3e9 100644
> --- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> +++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> @@ -21,6 +21,7 @@
>   #include <drm/drm_atomic_helper.h>
>   #include <drm/drm_crtc_helper.h>
>   #include <drm/drm_fb_cma_helper.h>
> +#include <drm/drm_fb_helper.h>
>   #include <drm/drm_gem_cma_helper.h>
>   
>   #include "rcar_du_drv.h"
> @@ -363,19 +364,11 @@ MODULE_DEVICE_TABLE(of, rcar_du_of_table);
>    * DRM operations
>    */
>   
> -static void rcar_du_lastclose(struct drm_device *dev)
> -{
> -	struct rcar_du_device *rcdu = dev->dev_private;
> -
> -	drm_fbdev_cma_restore_mode(rcdu->fbdev);
> -}
> -
>   DEFINE_DRM_GEM_CMA_FOPS(rcar_du_fops);
>   
>   static struct drm_driver rcar_du_driver = {
>   	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME
>   				| DRIVER_ATOMIC,
> -	.lastclose		= rcar_du_lastclose,
>   	.gem_free_object_unlocked = drm_gem_cma_free_object,
>   	.gem_vm_ops		= &drm_gem_cma_vm_ops,
>   	.prime_handle_to_fd	= drm_gem_prime_handle_to_fd,
> @@ -431,9 +424,6 @@ static int rcar_du_remove(struct platform_device *pdev)
>   
>   	drm_dev_unregister(ddev);
>   
> -	if (rcdu->fbdev)
> -		drm_fbdev_cma_fini(rcdu->fbdev);
> -
>   	drm_kms_helper_poll_fini(ddev);
>   	drm_mode_config_cleanup(ddev);
>   
> @@ -493,6 +483,8 @@ static int rcar_du_probe(struct platform_device *pdev)
>   
>   	DRM_INFO("Device %s probed\n", dev_name(&pdev->dev));
>   
> +	drm_fbdev_generic_setup(ddev, 32);
> +
>   	return 0;
>   
>   error:
> diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.h b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
> index 9f5563296c5a..a68da79b424e 100644
> --- a/drivers/gpu/drm/rcar-du/rcar_du_drv.h
> +++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
> @@ -20,7 +20,6 @@
>   struct clk;
>   struct device;
>   struct drm_device;
> -struct drm_fbdev_cma;
>   struct rcar_du_device;
>   
>   #define RCAR_DU_FEATURE_CRTC_IRQ_CLOCK	BIT(0)	/* Per-CRTC IRQ and clock */
> @@ -78,7 +77,6 @@ struct rcar_du_device {
>   	void __iomem *mmio;
>   
>   	struct drm_device *ddev;
> -	struct drm_fbdev_cma *fbdev;
>   
>   	struct rcar_du_crtc crtcs[RCAR_DU_MAX_CRTCS];
>   	unsigned int num_crtcs;
> diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
> index 4ebd61ecbee1..6562871aa706 100644
> --- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c
> +++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
> @@ -255,13 +255,6 @@ rcar_du_fb_create(struct drm_device *dev, struct drm_file *file_priv,
>   	return drm_gem_fb_create(dev, file_priv, mode_cmd);
>   }
>   
> -static void rcar_du_output_poll_changed(struct drm_device *dev)
> -{
> -	struct rcar_du_device *rcdu = dev->dev_private;
> -
> -	drm_fbdev_cma_hotplug_event(rcdu->fbdev);
> -}
> -
>   /* -----------------------------------------------------------------------------
>    * Atomic Check and Update
>    */
> @@ -308,7 +301,6 @@ static const struct drm_mode_config_helper_funcs rcar_du_mode_config_helper = {
>   
>   static const struct drm_mode_config_funcs rcar_du_mode_config_funcs = {
>   	.fb_create = rcar_du_fb_create,
> -	.output_poll_changed = rcar_du_output_poll_changed,
>   	.atomic_check = rcar_du_atomic_check,
>   	.atomic_commit = drm_atomic_helper_commit,
>   };
> @@ -543,7 +535,6 @@ int rcar_du_modeset_init(struct rcar_du_device *rcdu)
>   
>   	struct drm_device *dev = rcdu->ddev;
>   	struct drm_encoder *encoder;
> -	struct drm_fbdev_cma *fbdev;
>   	unsigned int dpad0_sources;
>   	unsigned int num_encoders;
>   	unsigned int num_groups;
> @@ -682,17 +673,5 @@ int rcar_du_modeset_init(struct rcar_du_device *rcdu)
>   
>   	drm_kms_helper_poll_init(dev);
>   
> -	if (dev->mode_config.num_connector) {
> -		fbdev = drm_fbdev_cma_init(dev, 32,
> -					   dev->mode_config.num_connector);
> -		if (IS_ERR(fbdev))
> -			return PTR_ERR(fbdev);
> -
> -		rcdu->fbdev = fbdev;
> -	} else {
> -		dev_info(rcdu->dev,
> -			 "no connector found, disabling fbdev emulation\n");
> -	}
> -
>   	return 0;
>   }
diff mbox series

Patch

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
index c6770043dcdc..c24aabe3e3e9 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
@@ -21,6 +21,7 @@ 
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_fb_helper.h>
 #include <drm/drm_gem_cma_helper.h>
 
 #include "rcar_du_drv.h"
@@ -363,19 +364,11 @@  MODULE_DEVICE_TABLE(of, rcar_du_of_table);
  * DRM operations
  */
 
-static void rcar_du_lastclose(struct drm_device *dev)
-{
-	struct rcar_du_device *rcdu = dev->dev_private;
-
-	drm_fbdev_cma_restore_mode(rcdu->fbdev);
-}
-
 DEFINE_DRM_GEM_CMA_FOPS(rcar_du_fops);
 
 static struct drm_driver rcar_du_driver = {
 	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME
 				| DRIVER_ATOMIC,
-	.lastclose		= rcar_du_lastclose,
 	.gem_free_object_unlocked = drm_gem_cma_free_object,
 	.gem_vm_ops		= &drm_gem_cma_vm_ops,
 	.prime_handle_to_fd	= drm_gem_prime_handle_to_fd,
@@ -431,9 +424,6 @@  static int rcar_du_remove(struct platform_device *pdev)
 
 	drm_dev_unregister(ddev);
 
-	if (rcdu->fbdev)
-		drm_fbdev_cma_fini(rcdu->fbdev);
-
 	drm_kms_helper_poll_fini(ddev);
 	drm_mode_config_cleanup(ddev);
 
@@ -493,6 +483,8 @@  static int rcar_du_probe(struct platform_device *pdev)
 
 	DRM_INFO("Device %s probed\n", dev_name(&pdev->dev));
 
+	drm_fbdev_generic_setup(ddev, 32);
+
 	return 0;
 
 error:
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.h b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
index 9f5563296c5a..a68da79b424e 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
@@ -20,7 +20,6 @@ 
 struct clk;
 struct device;
 struct drm_device;
-struct drm_fbdev_cma;
 struct rcar_du_device;
 
 #define RCAR_DU_FEATURE_CRTC_IRQ_CLOCK	BIT(0)	/* Per-CRTC IRQ and clock */
@@ -78,7 +77,6 @@  struct rcar_du_device {
 	void __iomem *mmio;
 
 	struct drm_device *ddev;
-	struct drm_fbdev_cma *fbdev;
 
 	struct rcar_du_crtc crtcs[RCAR_DU_MAX_CRTCS];
 	unsigned int num_crtcs;
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
index 4ebd61ecbee1..6562871aa706 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
@@ -255,13 +255,6 @@  rcar_du_fb_create(struct drm_device *dev, struct drm_file *file_priv,
 	return drm_gem_fb_create(dev, file_priv, mode_cmd);
 }
 
-static void rcar_du_output_poll_changed(struct drm_device *dev)
-{
-	struct rcar_du_device *rcdu = dev->dev_private;
-
-	drm_fbdev_cma_hotplug_event(rcdu->fbdev);
-}
-
 /* -----------------------------------------------------------------------------
  * Atomic Check and Update
  */
@@ -308,7 +301,6 @@  static const struct drm_mode_config_helper_funcs rcar_du_mode_config_helper = {
 
 static const struct drm_mode_config_funcs rcar_du_mode_config_funcs = {
 	.fb_create = rcar_du_fb_create,
-	.output_poll_changed = rcar_du_output_poll_changed,
 	.atomic_check = rcar_du_atomic_check,
 	.atomic_commit = drm_atomic_helper_commit,
 };
@@ -543,7 +535,6 @@  int rcar_du_modeset_init(struct rcar_du_device *rcdu)
 
 	struct drm_device *dev = rcdu->ddev;
 	struct drm_encoder *encoder;
-	struct drm_fbdev_cma *fbdev;
 	unsigned int dpad0_sources;
 	unsigned int num_encoders;
 	unsigned int num_groups;
@@ -682,17 +673,5 @@  int rcar_du_modeset_init(struct rcar_du_device *rcdu)
 
 	drm_kms_helper_poll_init(dev);
 
-	if (dev->mode_config.num_connector) {
-		fbdev = drm_fbdev_cma_init(dev, 32,
-					   dev->mode_config.num_connector);
-		if (IS_ERR(fbdev))
-			return PTR_ERR(fbdev);
-
-		rcdu->fbdev = fbdev;
-	} else {
-		dev_info(rcdu->dev,
-			 "no connector found, disabling fbdev emulation\n");
-	}
-
 	return 0;
 }