drm/arm/malidp: 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.

The malidp driver specifies a preferred color mode of 32. As this
is the default if no format has been given, leave it out entirely.

v5:
- select DRM_CLIENT_SELECTION

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Liviu Dudau <liviu.dudau@arm.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240924071734.98201-10-tzimmermann@suse.de

drivers/gpu/drm/arm/Kconfig

@@ -28,6 +28,7 @@ config DRM_MALI_DISPLAY
 	tristate "ARM Mali Display Processor"
 	depends on DRM && OF && (ARM || ARM64 || COMPILE_TEST)
 	depends on COMMON_CLK
+	select DRM_CLIENT_SELECTION
 	select DRM_KMS_HELPER
 	select DRM_GEM_DMA_HELPER
 	select VIDEOMODE_HELPERS

drivers/gpu/drm/arm/malidp_drv.c

@@ -18,6 +18,7 @@
 
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
+#include <drm/drm_client_setup.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_fbdev_dma.h>
@@ -562,6 +563,7 @@ static void malidp_debugfs_init(struct drm_minor *minor)
 static const struct drm_driver malidp_driver = {
 	.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
 	DRM_GEM_DMA_DRIVER_OPS_WITH_DUMB_CREATE(malidp_dumb_create),
+	DRM_FBDEV_DMA_DRIVER_OPS,
 #ifdef CONFIG_DEBUG_FS
 	.debugfs_init = malidp_debugfs_init,
 #endif
@@ -852,7 +854,7 @@ static int malidp_bind(struct device *dev)
 	if (ret)
 		goto register_fail;
 
-	drm_fbdev_dma_setup(drm, 32);
+	drm_client_setup(drm, NULL);
 
 	return 0;