drm/amdgpu: 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 amdgpu driver specifies a preferred color mode depending on
the available video memory, with a default of 32. Adapt this for
the new client interface.

v5:
- select DRM_CLIENT_SELECTION
v2:
- style changes

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: Xinhui Pan <Xinhui.Pan@amd.com>
Tested-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240924071734.98201-66-tzimmermann@suse.de

Author: tdz

drivers/gpu/drm/amd/amdgpu/Kconfig

@@ -5,6 +5,7 @@ config DRM_AMDGPU
 	depends on DRM && PCI && MMU
 	depends on !UML
 	select FW_LOADER
+	select DRM_CLIENT_SELECTION
 	select DRM_DISPLAY_DP_HELPER
 	select DRM_DISPLAY_DSC_HELPER
 	select DRM_DISPLAY_HDMI_HELPER

drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c

@@ -23,6 +23,7 @@
  */
 
 #include <drm/amdgpu_drm.h>
+#include <drm/drm_client_setup.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_fbdev_ttm.h>
 #include <drm/drm_gem.h>
@@ -2347,11 +2348,15 @@ static int amdgpu_pci_probe(struct pci_dev *pdev,
 	 */
 	if (adev->mode_info.mode_config_initialized &&
 	    !list_empty(&adev_to_drm(adev)->mode_config.connector_list)) {
+		const struct drm_format_info *format;
+
 		/* select 8 bpp console on low vram cards */
 		if (adev->gmc.real_vram_size <= (32*1024*1024))
-			drm_fbdev_ttm_setup(adev_to_drm(adev), 8);
+			format = drm_format_info(DRM_FORMAT_C8);
 		else
-			drm_fbdev_ttm_setup(adev_to_drm(adev), 32);
+			format = NULL;
+
+		drm_client_setup(adev_to_drm(adev), format);
 	}
 
 	ret = amdgpu_debugfs_init(adev);
@@ -2963,6 +2968,7 @@ static const struct drm_driver amdgpu_kms_driver = {
 	.num_ioctls = ARRAY_SIZE(amdgpu_ioctls_kms),
 	.dumb_create = amdgpu_mode_dumb_create,
 	.dumb_map_offset = amdgpu_mode_dumb_mmap,
+	DRM_FBDEV_TTM_DRIVER_OPS,
 	.fops = &amdgpu_driver_kms_fops,
 	.release = &amdgpu_driver_release_kms,
 #ifdef CONFIG_PROC_FS
@@ -2989,6 +2995,7 @@ const struct drm_driver amdgpu_partition_driver = {
 	.num_ioctls = ARRAY_SIZE(amdgpu_ioctls_kms),
 	.dumb_create = amdgpu_mode_dumb_create,
 	.dumb_map_offset = amdgpu_mode_dumb_mmap,
+	DRM_FBDEV_TTM_DRIVER_OPS,
 	.fops = &amdgpu_driver_kms_fops,
 	.release = &amdgpu_driver_release_kms,