Nouveau - Aug 2024 - [PATCH 48/86] drm/xlnx: Run DRM default client setup

Call drm_client_setup() to run the kernel's default client setup
for DRM. Set fbdev_probe in struct drm_driver, so that the client
setup can start the common fbdev client.

Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
Cc: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
Cc: Tomi Valkeinen <tomi.valkeinen at ideasonboard.com>
Cc: Michal Simek <michal.simek at amd.com>
---
 drivers/gpu/drm/xlnx/zynqmp_kms.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xlnx/zynqmp_kms.c
b/drivers/gpu/drm/xlnx/zynqmp_kms.c
index bd1368df7870..f26b119322d5 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_kms.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_kms.c
@@ -14,6 +14,7 @@
 #include <drm/drm_blend.h>
 #include <drm/drm_bridge.h>
 #include <drm/drm_bridge_connector.h>
+#include <drm/drm_client_setup.h>
 #include <drm/drm_connector.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_device.h>
@@ -402,6 +403,7 @@ static const struct drm_driver zynqmp_dpsub_drm_driver = {
 					  DRIVER_ATOMIC,
 
 	DRM_GEM_DMA_DRIVER_OPS_WITH_DUMB_CREATE(zynqmp_dpsub_dumb_create),
+	DRM_FBDEV_DMA_DRIVER_OPS,
 
 	.fops				= &zynqmp_dpsub_drm_fops,
 
@@ -523,7 +525,7 @@ int zynqmp_dpsub_drm_init(struct zynqmp_dpsub *dpsub)
 		goto err_poll_fini;
 
 	/* Initialize fbdev generic emulation. */
-	drm_fbdev_dma_setup(drm, 24);
+	drm_client_setup(drm, drm_format_info(DRM_FORMAT_RGB888));
 
 	return 0;
 
-- 
2.46.0

Hi Thomas,

Thank you for the patch.

On Fri, Aug 16, 2024 at 02:23:14PM +0200, Thomas Zimmermann
wrote:
> Call drm_client_setup() to run the kernel's default client setup
> for DRM. Set fbdev_probe in struct drm_driver, so that the client
> setup can start the common fbdev client.
> 
> Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
> Cc: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
> Cc: Tomi Valkeinen <tomi.valkeinen at ideasonboard.com>
> Cc: Michal Simek <michal.simek at amd.com>
> ---
>  drivers/gpu/drm/xlnx/zynqmp_kms.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/xlnx/zynqmp_kms.c
b/drivers/gpu/drm/xlnx/zynqmp_kms.c
> index bd1368df7870..f26b119322d5 100644
> --- a/drivers/gpu/drm/xlnx/zynqmp_kms.c
> +++ b/drivers/gpu/drm/xlnx/zynqmp_kms.c
> @@ -14,6 +14,7 @@
>  #include <drm/drm_blend.h>
>  #include <drm/drm_bridge.h>
>  #include <drm/drm_bridge_connector.h>
> +#include <drm/drm_client_setup.h>
>  #include <drm/drm_connector.h>
>  #include <drm/drm_crtc.h>
>  #include <drm/drm_device.h>
> @@ -402,6 +403,7 @@ static const struct drm_driver zynqmp_dpsub_drm_driver
= {
>  					  DRIVER_ATOMIC,
>  
>  	DRM_GEM_DMA_DRIVER_OPS_WITH_DUMB_CREATE(zynqmp_dpsub_dumb_create),
> +	DRM_FBDEV_DMA_DRIVER_OPS,
>  
>  	.fops				= &zynqmp_dpsub_drm_fops,
>  
> @@ -523,7 +525,7 @@ int zynqmp_dpsub_drm_init(struct zynqmp_dpsub *dpsub)
>  		goto err_poll_fini;
>  
>  	/* Initialize fbdev generic emulation. */
> -	drm_fbdev_dma_setup(drm, 24);
> +	drm_client_setup(drm, drm_format_info(DRM_FORMAT_RGB888));
I know this would be a hassle to change, but do the majority of the
callers of drm_client_setup() have a drm_format_info * already, or do
they need to call drm_format_info() on a 4CC ? In the latter case, would
it be better to pass the 4CC to drm_client_setup() ?

As far as this patch goes,

Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas at
ideasonboard.com>
>  
>  	return 0;
>  
-- 
Regards,

Laurent Pinchart