drm/meson: 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 meson 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: Neil Armstrong <neil.armstrong@linaro.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Jerome Brunet <jbrunet@baylibre.com>
Cc: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240924071734.98201-28-tzimmermann@suse.de

drivers/gpu/drm/meson/Kconfig

@@ -3,6 +3,7 @@ config DRM_MESON
 	tristate "DRM Support for Amlogic Meson Display Controller"
 	depends on DRM && OF && (ARM || ARM64)
 	depends on ARCH_MESON || COMPILE_TEST
+	select DRM_CLIENT_SELECTION
 	select DRM_KMS_HELPER
 	select DRM_DISPLAY_HELPER
 	select DRM_BRIDGE_CONNECTOR

drivers/gpu/drm/meson/meson_drv.c

@@ -17,6 +17,7 @@
 
 #include <drm/drm_aperture.h>
 #include <drm/drm_atomic_helper.h>
+#include <drm/drm_client_setup.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_fbdev_dma.h>
 #include <drm/drm_gem_dma_helper.h>
@@ -98,6 +99,7 @@ static const struct drm_driver meson_driver = {
 
 	/* DMA Ops */
 	DRM_GEM_DMA_DRIVER_OPS_WITH_DUMB_CREATE(meson_dumb_create),
+	DRM_FBDEV_DMA_DRIVER_OPS,
 
 	/* Misc */
 	.fops			= &fops,
@@ -353,7 +355,7 @@ static int meson_drv_bind_master(struct device *dev, bool has_components)
 	if (ret)
 		goto uninstall_irq;
 
-	drm_fbdev_dma_setup(drm, 32);
+	drm_client_setup(drm, NULL);
 
 	return 0;