drm/exynos-drm: Run DRM default client setup

Rework fbdev probing to support fbdev_probe in struct drm_driver
and remove the old fb_probe callback. Provide an initializer macro
for struct drm_driver that sets the callback according to the kernel
configuration.

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 exynos-drm 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
v4:
- revert an unrelated cleanup (Javier)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Seung-Woo Kim <sw0312.kim@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240924071734.98201-75-tzimmermann@suse.de

1 files changed, 10 insertions, 5 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.h b/drivers/gpu/drm/exynos/exynos_drm_fbdev.h
index 1e1dea627cd9..02a9201abea3 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.h
@@ -11,12 +11,17 @@
 #ifndef _EXYNOS_DRM_FBDEV_H_
 #define _EXYNOS_DRM_FBDEV_H_
 
-#ifdef CONFIG_DRM_FBDEV_EMULATION
-void exynos_drm_fbdev_setup(struct drm_device *dev);
+struct drm_fb_helper;
+struct drm_fb_helper_surface_size;
+
+#if defined(CONFIG_DRM_FBDEV_EMULATION)
+int exynos_drm_fbdev_driver_fbdev_probe(struct drm_fb_helper *fbh,
+					struct drm_fb_helper_surface_size *sizes);
+#define EXYNOS_DRM_FBDEV_DRIVER_OPS \
+	.fbdev_probe = exynos_drm_fbdev_driver_fbdev_probe
 #else
-static inline void exynos_drm_fbdev_setup(struct drm_device *dev)
-{
-}
+#define EXYNOS_DRM_FBDEV_DRIVER_OPS \
+	.fbdev_probe = NULL
 #endif
 
 #endif