[PATCH v4 1/7] [NOT FOR REVIEW] drm/client, squash of drm client pending series

From: Jocelyn Falempe
Date: Fri Oct 11 2024 - 06:56:08 EST

From: Thomas Zimmermann <tzimmermann@xxxxxxx>

squashed patch of v3 of drm: Introduce DRM client library
https://patchwork.freedesktop.org/series/139219/
---
Documentation/gpu/drm-client.rst | 3 +
drivers/gpu/drm/Kconfig | 41 +++-
drivers/gpu/drm/Makefile | 20 +-
drivers/gpu/drm/amd/amdgpu/Kconfig | 1 +
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 22 +-
drivers/gpu/drm/drm_client.c | 121 -----------
drivers/gpu/drm/drm_client_event.c | 197 ++++++++++++++++++
drivers/gpu/drm/drm_client_setup.c | 3 +
drivers/gpu/drm/drm_debugfs.c | 1 -
drivers/gpu/drm/drm_drv.c | 2 +-
drivers/gpu/drm/drm_fb_helper.c | 31 ---
drivers/gpu/drm/drm_fbdev_client.c | 30 ++-
drivers/gpu/drm/drm_file.c | 2 +-
drivers/gpu/drm/drm_internal.h | 15 ++
drivers/gpu/drm/drm_kms_helper_common.c | 38 ++++
drivers/gpu/drm/drm_modeset_helper.c | 14 +-
drivers/gpu/drm/drm_probe_helper.c | 2 +-
drivers/gpu/drm/i915/Kconfig | 1 +
.../drm/i915/display/intel_display_driver.c | 2 +-
drivers/gpu/drm/nouveau/nouveau_display.c | 8 +-
drivers/gpu/drm/nouveau/nouveau_vga.c | 2 +-
drivers/gpu/drm/radeon/radeon_device.c | 19 +-
drivers/gpu/drm/radeon/radeon_fbdev.c | 6 -
drivers/gpu/drm/radeon/radeon_mode.h | 3 -
drivers/gpu/drm/xe/Kconfig | 1 +
include/drm/drm_client.h | 41 +++-
include/drm/drm_client_event.h | 27 +++
27 files changed, 434 insertions(+), 219 deletions(-)
create mode 100644 drivers/gpu/drm/drm_client_event.c
create mode 100644 include/drm/drm_client_event.h

diff --git a/Documentation/gpu/drm-client.rst b/Documentation/gpu/drm-client.rst
index 58b5a1d1219d..cbcfe30de777 100644
--- a/Documentation/gpu/drm-client.rst
+++ b/Documentation/gpu/drm-client.rst
@@ -13,3 +13,6 @@ Kernel clients

.. kernel-doc:: drivers/gpu/drm/drm_client_modeset.c
:export:
+
+.. kernel-doc:: drivers/gpu/drm/drm_client_event.c
+ :export:
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index 1df4e627e3d3..a9055c0b9a1a 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -9,9 +9,6 @@ menuconfig DRM
tristate "Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)"
depends on (AGP || AGP=n) && !EMULATED_CMPXCHG && HAS_DMA
select DRM_PANEL_ORIENTATION_QUIRKS
- select DRM_KMS_HELPER if DRM_FBDEV_EMULATION
- select FB_CORE if DRM_FBDEV_EMULATION
- select FB_SYSMEM_HELPERS_DEFERRED if DRM_FBDEV_EMULATION
select HDMI
select I2C
select DMA_SHARED_BUFFER
@@ -210,10 +207,28 @@ config DRM_DEBUG_MODESET_LOCK

If in doubt, say "N".

-config DRM_CLIENT_SELECTION
+config DRM_CLIENT
bool
depends on DRM
- select DRM_CLIENT_SETUP if DRM_FBDEV_EMULATION
+ help
+ Enables support for DRM clients. DRM drivers that need
+ struct drm_client_dev and its interfaces should select this
+ option. Drivers that support the default clients should
+ select DRM_CLIENT_SELECTION instead.
+
+config DRM_CLIENT_LIB
+ tristate
+ depends on DRM
+ select DRM_KMS_HELPER if DRM_FBDEV_EMULATION
+ select FB_CORE if DRM_FBDEV_EMULATION
+ help
+ This option enables the DRM client library and selects all
+ modules and components according to the enabled clients.
+
+config DRM_CLIENT_SELECTION
+ tristate
+ depends on DRM
+ select DRM_CLIENT_LIB if DRM_FBDEV_EMULATION
help
Drivers that support in-kernel DRM clients have to select this
option.
@@ -221,10 +236,18 @@ config DRM_CLIENT_SELECTION
config DRM_CLIENT_SETUP
bool
depends on DRM_CLIENT_SELECTION
+ help
+ Enables the DRM client selection. DRM drivers that support the
+ default clients should select DRM_CLIENT_SELECTION instead.
+
+menu "Supported DRM clients"
+ depends on DRM_CLIENT_SELECTION

config DRM_FBDEV_EMULATION
bool "Enable legacy fbdev support for your modesetting driver"
- depends on DRM
+ depends on DRM_CLIENT_SELECTION
+ select DRM_CLIENT
+ select DRM_CLIENT_SETUP
select FRAMEBUFFER_CONSOLE_DETECT_PRIMARY if FRAMEBUFFER_CONSOLE
default FB
help
@@ -263,6 +286,8 @@ config DRM_FBDEV_LEAK_PHYS_SMEM
If in doubt, say "N" or spread the word to your closed source
library vendor.

+endmenu
+
config DRM_LOAD_EDID_FIRMWARE
bool "Allow to specify an EDID data set instead of probing for it"
depends on DRM
@@ -332,19 +357,21 @@ config DRM_TTM_HELPER
tristate
depends on DRM
select DRM_TTM
+ select FB_SYSMEM_HELPERS_DEFERRED if DRM_FBDEV_EMULATION
help
Helpers for ttm-based gem objects

config DRM_GEM_DMA_HELPER
tristate
depends on DRM
- select FB_DMAMEM_HELPERS if DRM_FBDEV_EMULATION
+ select FB_DMAMEM_HELPERS_DEFERRED if DRM_FBDEV_EMULATION
help
Choose this if you need the GEM DMA helper functions

config DRM_GEM_SHMEM_HELPER
tristate
depends on DRM && MMU
+ select FB_SYSMEM_HELPERS_DEFERRED if DRM_FBDEV_EMULATION
help
Choose this if you need the GEM shmem helper functions

diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 3894f43f6d47..edfd2ebaf153 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -41,8 +41,6 @@ drm-y := \
drm_blend.o \
drm_bridge.o \
drm_cache.o \
- drm_client.o \
- drm_client_modeset.o \
drm_color_mgmt.o \
drm_connector.o \
drm_crtc.o \
@@ -76,6 +74,10 @@ drm-y := \
drm_vblank_work.o \
drm_vma_manager.o \
drm_writeback.o
+drm-$(CONFIG_DRM_CLIENT) += \
+ drm_client.o \
+ drm_client_event.o \
+ drm_client_modeset.o
drm-$(CONFIG_DRM_LIB_RANDOM) += lib/drm_random.o
drm-$(CONFIG_COMPAT) += drm_ioc32.o
drm-$(CONFIG_DRM_PANEL) += drm_panel.o
@@ -143,13 +145,19 @@ drm_kms_helper-y := \
drm_probe_helper.o \
drm_self_refresh_helper.o \
drm_simple_kms_helper.o
-drm_kms_helper-$(CONFIG_DRM_CLIENT_SETUP) += \
- drm_client_setup.o
drm_kms_helper-$(CONFIG_DRM_PANEL_BRIDGE) += bridge/panel.o
-drm_kms_helper-$(CONFIG_DRM_FBDEV_EMULATION) += \
+obj-$(CONFIG_DRM_KMS_HELPER) += drm_kms_helper.o
+
+#
+# DRM clients
+#
+
+drm_client_lib-y := \
+ drm_client_setup.o
+drm_client_lib-$(CONFIG_DRM_FBDEV_EMULATION) += \
drm_fbdev_client.o \
drm_fb_helper.o
-obj-$(CONFIG_DRM_KMS_HELPER) += drm_kms_helper.o
+obj-$(CONFIG_DRM_CLIENT_LIB) += drm_client_lib.o

#
# Drivers and the rest
diff --git a/drivers/gpu/drm/amd/amdgpu/Kconfig b/drivers/gpu/drm/amd/amdgpu/Kconfig
index 680a94c361ba..41fa3377d9cf 100644
--- a/drivers/gpu/drm/amd/amdgpu/Kconfig
+++ b/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
select DRM_CLIENT_SELECTION
select DRM_DISPLAY_DP_HELPER
select DRM_DISPLAY_DSC_HELPER
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index fd853dc843e9..9c40d620a658 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -37,8 +37,8 @@

#include <drm/drm_aperture.h>
#include <drm/drm_atomic_helper.h>
+#include <drm/drm_client_event.h>
#include <drm/drm_crtc_helper.h>
-#include <drm/drm_fb_helper.h>
#include <drm/drm_probe_helper.h>
#include <drm/amdgpu_drm.h>
#include <linux/device.h>
@@ -4711,13 +4711,13 @@ int amdgpu_device_prepare(struct drm_device *dev)
* amdgpu_device_suspend - initiate device suspend
*
* @dev: drm dev pointer
- * @fbcon : notify the fbdev of suspend
+ * @notify_clients: notify in-kernel DRM clients
*
* Puts the hw in the suspend state (all asics).
* Returns 0 for success or an error on failure.
* Called at driver suspend.
*/
-int amdgpu_device_suspend(struct drm_device *dev, bool fbcon)
+int amdgpu_device_suspend(struct drm_device *dev, bool notify_clients)
{
struct amdgpu_device *adev = drm_to_adev(dev);
int r = 0;
@@ -4737,8 +4737,8 @@ int amdgpu_device_suspend(struct drm_device *dev, bool fbcon)
if (amdgpu_acpi_smart_shift_update(dev, AMDGPU_SS_DEV_D3))
DRM_WARN("smart shift update failed\n");

- if (fbcon)
- drm_fb_helper_set_suspend_unlocked(adev_to_drm(adev)->fb_helper, true);
+ if (notify_clients)
+ drm_client_dev_suspend(adev_to_drm(adev), false);

cancel_delayed_work_sync(&adev->delayed_init_work);

@@ -4773,13 +4773,13 @@ int amdgpu_device_suspend(struct drm_device *dev, bool fbcon)
* amdgpu_device_resume - initiate device resume
*
* @dev: drm dev pointer
- * @fbcon : notify the fbdev of resume
+ * @notify_clients: notify in-kernel DRM clients
*
* Bring the hw back to operating state (all asics).
* Returns 0 for success or an error on failure.
* Called at driver resume.
*/
-int amdgpu_device_resume(struct drm_device *dev, bool fbcon)
+int amdgpu_device_resume(struct drm_device *dev, bool notify_clients)
{
struct amdgpu_device *adev = drm_to_adev(dev);
int r = 0;
@@ -4835,8 +4835,8 @@ int amdgpu_device_resume(struct drm_device *dev, bool fbcon)
/* Make sure IB tests flushed */
flush_delayed_work(&adev->delayed_init_work);

- if (fbcon)
- drm_fb_helper_set_suspend_unlocked(adev_to_drm(adev)->fb_helper, false);
+ if (notify_clients)
+ drm_client_dev_resume(adev_to_drm(adev), false);

amdgpu_ras_resume(adev);

@@ -5448,7 +5448,7 @@ int amdgpu_do_asic_reset(struct list_head *device_list_handle,
if (r)
goto out;

- drm_fb_helper_set_suspend_unlocked(adev_to_drm(tmp_adev)->fb_helper, false);
+ drm_client_dev_resume(adev_to_drm(tmp_adev), false);

/*
* The GPU enters bad state once faulty pages
@@ -5734,7 +5734,7 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
*/
amdgpu_unregister_gpu_instance(tmp_adev);

- drm_fb_helper_set_suspend_unlocked(adev_to_drm(tmp_adev)->fb_helper, true);
+ drm_client_dev_suspend(adev_to_drm(tmp_adev), false);

/* disable ras on ALL IPs */
if (!need_emergency_restart &&
diff --git a/drivers/gpu/drm/drm_client.c b/drivers/gpu/drm/drm_client.c
index bfedcbf516db..549b28a5918c 100644
--- a/drivers/gpu/drm/drm_client.c
+++ b/drivers/gpu/drm/drm_client.c
@@ -10,7 +10,6 @@
#include <linux/slab.h>

#include <drm/drm_client.h>
-#include <drm/drm_debugfs.h>
#include <drm/drm_device.h>
#include <drm/drm_drv.h>
#include <drm/drm_file.h>
@@ -172,99 +171,6 @@ void drm_client_release(struct drm_client_dev *client)
}
EXPORT_SYMBOL(drm_client_release);

-/**
- * drm_client_dev_unregister - Unregister clients
- * @dev: DRM device
- *
- * This function releases all clients by calling each client's
- * &drm_client_funcs.unregister callback. The callback function
- * is responsibe for releaseing all resources including the client
- * itself.
- *
- * The helper drm_dev_unregister() calls this function. Drivers
- * that use it don't need to call this function themselves.
- */
-void drm_client_dev_unregister(struct drm_device *dev)
-{
- struct drm_client_dev *client, *tmp;
-
- if (!drm_core_check_feature(dev, DRIVER_MODESET))
- return;
-
- mutex_lock(&dev->clientlist_mutex);
- list_for_each_entry_safe(client, tmp, &dev->clientlist, list) {
- list_del(&client->list);
- if (client->funcs && client->funcs->unregister) {
- client->funcs->unregister(client);
- } else {
- drm_client_release(client);
- kfree(client);
- }
- }
- mutex_unlock(&dev->clientlist_mutex);
-}
-EXPORT_SYMBOL(drm_client_dev_unregister);
-
-/**
- * drm_client_dev_hotplug - Send hotplug event to clients
- * @dev: DRM device
- *
- * This function calls the &drm_client_funcs.hotplug callback on the attached clients.
- *
- * drm_kms_helper_hotplug_event() calls this function, so drivers that use it
- * don't need to call this function themselves.
- */
-void drm_client_dev_hotplug(struct drm_device *dev)
-{
- struct drm_client_dev *client;
- int ret;
-
- if (!drm_core_check_feature(dev, DRIVER_MODESET))
- return;
-
- if (!dev->mode_config.num_connector) {
- drm_dbg_kms(dev, "No connectors found, will not send hotplug events!\n");
- return;
- }
-
- mutex_lock(&dev->clientlist_mutex);
- list_for_each_entry(client, &dev->clientlist, list) {
- if (!client->funcs || !client->funcs->hotplug)
- continue;
-
- if (client->hotplug_failed)
- continue;
-
- ret = client->funcs->hotplug(client);
- drm_dbg_kms(dev, "%s: ret=%d\n", client->name, ret);
- if (ret)
- client->hotplug_failed = true;
- }
- mutex_unlock(&dev->clientlist_mutex);
-}
-EXPORT_SYMBOL(drm_client_dev_hotplug);
-
-void drm_client_dev_restore(struct drm_device *dev)
-{
- struct drm_client_dev *client;
- int ret;
-
- if (!drm_core_check_feature(dev, DRIVER_MODESET))
- return;
-
- mutex_lock(&dev->clientlist_mutex);
- list_for_each_entry(client, &dev->clientlist, list) {
- if (!client->funcs || !client->funcs->restore)
- continue;
-
- ret = client->funcs->restore(client);
- drm_dbg_kms(dev, "%s: ret=%d\n", client->name, ret);
- if (!ret) /* The first one to return zero gets the privilege to restore */
- break;
- }
- mutex_unlock(&dev->clientlist_mutex);
-}
-
static void drm_client_buffer_delete(struct drm_client_buffer *buffer)
{
if (buffer->gem) {
@@ -584,30 +490,3 @@ int drm_client_framebuffer_flush(struct drm_client_buffer *buffer, struct drm_re
0, 0, NULL, 0);
}
EXPORT_SYMBOL(drm_client_framebuffer_flush);
-
-#ifdef CONFIG_DEBUG_FS
-static int drm_client_debugfs_internal_clients(struct seq_file *m, void *data)
-{
- struct drm_debugfs_entry *entry = m->private;
- struct drm_device *dev = entry->dev;
- struct drm_printer p = drm_seq_file_printer(m);
- struct drm_client_dev *client;
-
- mutex_lock(&dev->clientlist_mutex);
- list_for_each_entry(client, &dev->clientlist, list)
- drm_printf(&p, "%s\n", client->name);
- mutex_unlock(&dev->clientlist_mutex);
-
- return 0;
-}
-
-static const struct drm_debugfs_info drm_client_debugfs_list[] = {
- { "internal_clients", drm_client_debugfs_internal_clients, 0 },
-};
-
-void drm_client_debugfs_init(struct drm_device *dev)
-{
- drm_debugfs_add_files(dev, drm_client_debugfs_list,
- ARRAY_SIZE(drm_client_debugfs_list));
-}
-#endif
diff --git a/drivers/gpu/drm/drm_client_event.c b/drivers/gpu/drm/drm_client_event.c
new file mode 100644
index 000000000000..e303de564485
--- /dev/null
+++ b/drivers/gpu/drm/drm_client_event.c
@@ -0,0 +1,197 @@
+// SPDX-License-Identifier: GPL-2.0 or MIT
+/*
+ * Copyright 2018 Noralf Trønnes
+ */
+
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/seq_file.h>
+
+#include <drm/drm_client.h>
+#include <drm/drm_client_event.h>
+#include <drm/drm_debugfs.h>
+#include <drm/drm_device.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_print.h>
+
+#include "drm_internal.h"
+
+/**
+ * drm_client_dev_unregister - Unregister clients
+ * @dev: DRM device
+ *
+ * This function releases all clients by calling each client's
+ * &drm_client_funcs.unregister callback. The callback function
+ * is responsibe for releaseing all resources including the client
+ * itself.
+ *
+ * The helper drm_dev_unregister() calls this function. Drivers
+ * that use it don't need to call this function themselves.
+ */
+void drm_client_dev_unregister(struct drm_device *dev)
+{
+ struct drm_client_dev *client, *tmp;
+
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return;
+
+ mutex_lock(&dev->clientlist_mutex);
+ list_for_each_entry_safe(client, tmp, &dev->clientlist, list) {
+ list_del(&client->list);
+ if (client->funcs && client->funcs->unregister) {
+ client->funcs->unregister(client);
+ } else {
+ drm_client_release(client);
+ kfree(client);
+ }
+ }
+ mutex_unlock(&dev->clientlist_mutex);
+}
+EXPORT_SYMBOL(drm_client_dev_unregister);
+
+/**
+ * drm_client_dev_hotplug - Send hotplug event to clients
+ * @dev: DRM device
+ *
+ * This function calls the &drm_client_funcs.hotplug callback on the attached clients.
+ *
+ * drm_kms_helper_hotplug_event() calls this function, so drivers that use it
+ * don't need to call this function themselves.
+ */
+void drm_client_dev_hotplug(struct drm_device *dev)
+{
+ struct drm_client_dev *client;
+ int ret;
+
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return;
+
+ if (!dev->mode_config.num_connector) {
+ drm_dbg_kms(dev, "No connectors found, will not send hotplug events!\n");
+ return;
+ }
+
+ mutex_lock(&dev->clientlist_mutex);
+ list_for_each_entry(client, &dev->clientlist, list) {
+ if (!client->funcs || !client->funcs->hotplug)
+ continue;
+
+ if (client->hotplug_failed)
+ continue;
+
+ ret = client->funcs->hotplug(client);
+ drm_dbg_kms(dev, "%s: ret=%d\n", client->name, ret);
+ if (ret)
+ client->hotplug_failed = true;
+ }
+ mutex_unlock(&dev->clientlist_mutex);
+}
+EXPORT_SYMBOL(drm_client_dev_hotplug);
+
+void drm_client_dev_restore(struct drm_device *dev)
+{
+ struct drm_client_dev *client;
+ int ret;
+
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return;
+
+ mutex_lock(&dev->clientlist_mutex);
+ list_for_each_entry(client, &dev->clientlist, list) {
+ if (!client->funcs || !client->funcs->restore)
+ continue;
+
+ ret = client->funcs->restore(client);
+ drm_dbg_kms(dev, "%s: ret=%d\n", client->name, ret);
+ if (!ret) /* The first one to return zero gets the privilege to restore */
+ break;
+ }
+ mutex_unlock(&dev->clientlist_mutex);
+}
+
+static int drm_client_suspend(struct drm_client_dev *client, bool holds_console_lock)
+{
+ struct drm_device *dev = client->dev;
+ int ret = 0;
+
+ if (drm_WARN_ON_ONCE(dev, client->suspended))
+ return 0;
+
+ if (client->funcs && client->funcs->suspend)
+ ret = client->funcs->suspend(client, holds_console_lock);
+ drm_dbg_kms(dev, "%s: ret=%d\n", client->name, ret);
+
+ client->suspended = true;
+
+ return ret;
+}
+
+void drm_client_dev_suspend(struct drm_device *dev, bool holds_console_lock)
+{
+ struct drm_client_dev *client;
+
+ mutex_lock(&dev->clientlist_mutex);
+ list_for_each_entry(client, &dev->clientlist, list) {
+ if (!client->suspended)
+ drm_client_suspend(client, holds_console_lock);
+ }
+ mutex_unlock(&dev->clientlist_mutex);
+}
+EXPORT_SYMBOL(drm_client_dev_suspend);
+
+static int drm_client_resume(struct drm_client_dev *client, bool holds_console_lock)
+{
+ struct drm_device *dev = client->dev;
+ int ret = 0;
+
+ if (drm_WARN_ON_ONCE(dev, !client->suspended))
+ return 0;
+
+ if (client->funcs && client->funcs->resume)
+ ret = client->funcs->resume(client, holds_console_lock);
+ drm_dbg_kms(dev, "%s: ret=%d\n", client->name, ret);
+
+ client->suspended = false;
+
+ return ret;
+}
+
+void drm_client_dev_resume(struct drm_device *dev, bool holds_console_lock)
+{
+ struct drm_client_dev *client;
+
+ mutex_lock(&dev->clientlist_mutex);
+ list_for_each_entry(client, &dev->clientlist, list) {
+ if (client->suspended)
+ drm_client_resume(client, holds_console_lock);
+ }
+ mutex_unlock(&dev->clientlist_mutex);
+}
+EXPORT_SYMBOL(drm_client_dev_resume);
+
+#ifdef CONFIG_DEBUG_FS
+static int drm_client_debugfs_internal_clients(struct seq_file *m, void *data)
+{
+ struct drm_debugfs_entry *entry = m->private;
+ struct drm_device *dev = entry->dev;
+ struct drm_printer p = drm_seq_file_printer(m);
+ struct drm_client_dev *client;
+
+ mutex_lock(&dev->clientlist_mutex);
+ list_for_each_entry(client, &dev->clientlist, list)
+ drm_printf(&p, "%s\n", client->name);
+ mutex_unlock(&dev->clientlist_mutex);
+
+ return 0;
+}
+
+static const struct drm_debugfs_info drm_client_debugfs_list[] = {
+ { "internal_clients", drm_client_debugfs_internal_clients, 0 },
+};
+
+void drm_client_debugfs_init(struct drm_device *dev)
+{
+ drm_debugfs_add_files(dev, drm_client_debugfs_list,
+ ARRAY_SIZE(drm_client_debugfs_list));
+}
+#endif
diff --git a/drivers/gpu/drm/drm_client_setup.c b/drivers/gpu/drm/drm_client_setup.c
index 5969c4ffe31b..c14221ca5a0d 100644
--- a/drivers/gpu/drm/drm_client_setup.c
+++ b/drivers/gpu/drm/drm_client_setup.c
@@ -64,3 +64,6 @@ void drm_client_setup_with_color_mode(struct drm_device *dev, unsigned int color
drm_client_setup_with_fourcc(dev, fourcc);
}
EXPORT_SYMBOL(drm_client_setup_with_color_mode);
+
+MODULE_DESCRIPTION("In-kernel DRM clients");
+MODULE_LICENSE("GPL and additional rights");
diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index 5c99322a4c6f..d9c1be6457e9 100644
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -32,7 +32,6 @@
#include <drm/drm_atomic.h>
#include <drm/drm_auth.h>
#include <drm/drm_bridge.h>
-#include <drm/drm_client.h>
#include <drm/drm_debugfs.h>
#include <drm/drm_device.h>
#include <drm/drm_drv.h>
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index ac30b0ec9d93..c2c172eb25df 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -38,7 +38,7 @@

#include <drm/drm_accel.h>
#include <drm/drm_cache.h>
-#include <drm/drm_client.h>
+#include <drm/drm_client_event.h>
#include <drm/drm_color_mgmt.h>
#include <drm/drm_drv.h>
#include <drm/drm_file.h>
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index d5e8994345bb..004f7c437897 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -46,37 +46,6 @@
#include "drm_internal.h"
#include "drm_crtc_internal.h"

-static bool drm_fbdev_emulation = true;
-module_param_named(fbdev_emulation, drm_fbdev_emulation, bool, 0600);
-MODULE_PARM_DESC(fbdev_emulation,
- "Enable legacy fbdev emulation [default=true]");
-
-static int drm_fbdev_overalloc = CONFIG_DRM_FBDEV_OVERALLOC;
-module_param(drm_fbdev_overalloc, int, 0444);
-MODULE_PARM_DESC(drm_fbdev_overalloc,
- "Overallocation of the fbdev buffer (%) [default="
- __MODULE_STRING(CONFIG_DRM_FBDEV_OVERALLOC) "]");
-
-/*
- * In order to keep user-space compatibility, we want in certain use-cases
- * to keep leaking the fbdev physical address to the user-space program
- * handling the fbdev buffer.
- *
- * This is a bad habit, essentially kept to support closed-source OpenGL
- * drivers that should really be moved into open-source upstream projects
- * instead of using legacy physical addresses in user space to communicate
- * with other out-of-tree kernel modules.
- *
- * This module_param *should* be removed as soon as possible and be
- * considered as a broken and legacy behaviour from a modern fbdev device.
- */
-static bool drm_leak_fbdev_smem;
-#if IS_ENABLED(CONFIG_DRM_FBDEV_LEAK_PHYS_SMEM)
-module_param_unsafe(drm_leak_fbdev_smem, bool, 0600);
-MODULE_PARM_DESC(drm_leak_fbdev_smem,
- "Allow unsafe leaking fbdev physical smem address [default=false]");
-#endif
-
static LIST_HEAD(kernel_fb_helper_list);
static DEFINE_MUTEX(kernel_fb_helper_lock);

diff --git a/drivers/gpu/drm/drm_fbdev_client.c b/drivers/gpu/drm/drm_fbdev_client.c
index a09382afe2fb..246fb63ab250 100644
--- a/drivers/gpu/drm/drm_fbdev_client.c
+++ b/drivers/gpu/drm/drm_fbdev_client.c
@@ -61,11 +61,37 @@ static int drm_fbdev_client_hotplug(struct drm_client_dev *client)
return ret;
}

+static int drm_fbdev_client_suspend(struct drm_client_dev *client, bool holds_console_lock)
+{
+ struct drm_fb_helper *fb_helper = drm_fb_helper_from_client(client);
+
+ if (holds_console_lock)
+ drm_fb_helper_set_suspend(fb_helper, true);
+ else
+ drm_fb_helper_set_suspend_unlocked(fb_helper, true);
+
+ return 0;
+}
+
+static int drm_fbdev_client_resume(struct drm_client_dev *client, bool holds_console_lock)
+{
+ struct drm_fb_helper *fb_helper = drm_fb_helper_from_client(client);
+
+ if (holds_console_lock)
+ drm_fb_helper_set_suspend(fb_helper, false);
+ else
+ drm_fb_helper_set_suspend_unlocked(fb_helper, false);
+
+ return 0;
+}
+
static const struct drm_client_funcs drm_fbdev_client_funcs = {
.owner = THIS_MODULE,
.unregister = drm_fbdev_client_unregister,
.restore = drm_fbdev_client_restore,
.hotplug = drm_fbdev_client_hotplug,
+ .suspend = drm_fbdev_client_suspend,
+ .resume = drm_fbdev_client_resume,
};

/**
@@ -76,8 +102,8 @@ static const struct drm_client_funcs drm_fbdev_client_funcs = {
*
* This function sets up fbdev emulation. Restore, hotplug events and
* teardown are all taken care of. Drivers that do suspend/resume need
- * to call drm_fb_helper_set_suspend_unlocked() themselves. Simple
- * drivers might use drm_mode_config_helper_suspend().
+ * to call drm_client_dev_suspend() and drm_client_dev_resume() by
+ * themselves. Simple drivers might use drm_mode_config_helper_suspend().
*
* This function is safe to call even when there are no connectors present.
* Setup will be retried on the next hotplug event.
diff --git a/drivers/gpu/drm/drm_file.c b/drivers/gpu/drm/drm_file.c
index 2ee1c3233b0c..9011f8e16099 100644
--- a/drivers/gpu/drm/drm_file.c
+++ b/drivers/gpu/drm/drm_file.c
@@ -40,7 +40,7 @@
#include <linux/slab.h>
#include <linux/vga_switcheroo.h>

-#include <drm/drm_client.h>
+#include <drm/drm_client_event.h>
#include <drm/drm_drv.h>
#include <drm/drm_file.h>
#include <drm/drm_gem.h>
diff --git a/drivers/gpu/drm/drm_internal.h b/drivers/gpu/drm/drm_internal.h
index 1705bfc90b1e..0bfcba6949b0 100644
--- a/drivers/gpu/drm/drm_internal.h
+++ b/drivers/gpu/drm/drm_internal.h
@@ -48,12 +48,27 @@ struct drm_prime_file_private;
struct drm_printer;
struct drm_vblank_crtc;

+/* drm_client_event.c */
+#if defined(CONFIG_DRM_CLIENT)
+void drm_client_debugfs_init(struct drm_device *dev);
+#else
+static inline void drm_client_debugfs_init(struct drm_device *dev)
+{ }
+#endif
+
/* drm_file.c */
extern struct mutex drm_global_mutex;
bool drm_dev_needs_global_mutex(struct drm_device *dev);
struct drm_file *drm_file_alloc(struct drm_minor *minor);
void drm_file_free(struct drm_file *file);

+/* drm_kms_helper_common.c */
+#if defined(CONFIG_DRM_FBDEV_EMULATION)
+extern bool drm_fbdev_emulation;
+extern int drm_fbdev_overalloc;
+extern bool drm_leak_fbdev_smem;
+#endif
+
#ifdef CONFIG_PCI

/* drm_pci.c */
diff --git a/drivers/gpu/drm/drm_kms_helper_common.c b/drivers/gpu/drm/drm_kms_helper_common.c
index 0c7550c0462b..ecff0b1414ac 100644
--- a/drivers/gpu/drm/drm_kms_helper_common.c
+++ b/drivers/gpu/drm/drm_kms_helper_common.c
@@ -27,6 +27,44 @@

#include <linux/module.h>

+#include "drm_internal.h"
+
+#if defined(CONFIG_DRM_FBDEV_EMULATION)
+bool drm_fbdev_emulation = true;
+EXPORT_SYMBOL(drm_fbdev_emulation);
+module_param_named(fbdev_emulation, drm_fbdev_emulation, bool, 0600);
+MODULE_PARM_DESC(fbdev_emulation,
+ "Enable legacy fbdev emulation [default=true]");
+
+int drm_fbdev_overalloc = CONFIG_DRM_FBDEV_OVERALLOC;
+EXPORT_SYMBOL(drm_fbdev_overalloc);
+module_param(drm_fbdev_overalloc, int, 0444);
+MODULE_PARM_DESC(drm_fbdev_overalloc,
+ "Overallocation of the fbdev buffer (%) [default="
+ __MODULE_STRING(CONFIG_DRM_FBDEV_OVERALLOC) "]");
+
+/*
+ * In order to keep user-space compatibility, we want in certain use-cases
+ * to keep leaking the fbdev physical address to the user-space program
+ * handling the fbdev buffer.
+ *
+ * This is a bad habit, essentially kept to support closed-source OpenGL
+ * drivers that should really be moved into open-source upstream projects
+ * instead of using legacy physical addresses in user space to communicate
+ * with other out-of-tree kernel modules.
+ *
+ * This module_param *should* be removed as soon as possible and be
+ * considered as a broken and legacy behaviour from a modern fbdev device.
+ */
+bool drm_leak_fbdev_smem;
+EXPORT_SYMBOL(drm_leak_fbdev_smem);
+#if IS_ENABLED(CONFIG_DRM_FBDEV_LEAK_PHYS_SMEM)
+module_param_unsafe(drm_leak_fbdev_smem, bool, 0600);
+MODULE_PARM_DESC(drm_leak_fbdev_smem,
+ "Allow unsafe leaking fbdev physical smem address [default=false]");
+#endif
+#endif
+
MODULE_AUTHOR("David Airlie, Jesse Barnes");
MODULE_DESCRIPTION("DRM KMS helper");
MODULE_LICENSE("GPL and additional rights");
diff --git a/drivers/gpu/drm/drm_modeset_helper.c b/drivers/gpu/drm/drm_modeset_helper.c
index 2c582020cb42..5565464c1734 100644
--- a/drivers/gpu/drm/drm_modeset_helper.c
+++ b/drivers/gpu/drm/drm_modeset_helper.c
@@ -21,7 +21,7 @@
*/

#include <drm/drm_atomic_helper.h>
-#include <drm/drm_fb_helper.h>
+#include <drm/drm_client_event.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_framebuffer.h>
#include <drm/drm_modeset_helper.h>
@@ -185,7 +185,7 @@ EXPORT_SYMBOL(drm_crtc_init);
* Zero on success, negative error code on error.
*
* See also:
- * drm_kms_helper_poll_disable() and drm_fb_helper_set_suspend_unlocked().
+ * drm_kms_helper_poll_disable() and drm_client_dev_suspend().
*/
int drm_mode_config_helper_suspend(struct drm_device *dev)
{
@@ -199,10 +199,11 @@ int drm_mode_config_helper_suspend(struct drm_device *dev)
if (dev->mode_config.poll_enabled)
drm_kms_helper_poll_disable(dev);

- drm_fb_helper_set_suspend_unlocked(dev->fb_helper, 1);
+ drm_client_dev_suspend(dev, false);
state = drm_atomic_helper_suspend(dev);
if (IS_ERR(state)) {
- drm_fb_helper_set_suspend_unlocked(dev->fb_helper, 0);
+ drm_client_dev_resume(dev, false);
+
/*
* Don't enable polling if it was never initialized
*/
@@ -230,7 +231,7 @@ EXPORT_SYMBOL(drm_mode_config_helper_suspend);
* Zero on success, negative error code on error.
*
* See also:
- * drm_fb_helper_set_suspend_unlocked() and drm_kms_helper_poll_enable().
+ * drm_client_dev_resume() and drm_kms_helper_poll_enable().
*/
int drm_mode_config_helper_resume(struct drm_device *dev)
{
@@ -247,7 +248,8 @@ int drm_mode_config_helper_resume(struct drm_device *dev)
DRM_ERROR("Failed to resume (%d)\n", ret);
dev->mode_config.suspend_state = NULL;

- drm_fb_helper_set_suspend_unlocked(dev->fb_helper, 0);
+ drm_client_dev_resume(dev, false);
+
/*
* Don't enable polling if it is not initialized
*/
diff --git a/drivers/gpu/drm/drm_probe_helper.c b/drivers/gpu/drm/drm_probe_helper.c
index 92f21764246f..96b266b37ba4 100644
--- a/drivers/gpu/drm/drm_probe_helper.c
+++ b/drivers/gpu/drm/drm_probe_helper.c
@@ -33,7 +33,7 @@
#include <linux/moduleparam.h>

#include <drm/drm_bridge.h>
-#include <drm/drm_client.h>
+#include <drm/drm_client_event.h>
#include <drm/drm_crtc.h>
#include <drm/drm_edid.h>
#include <drm/drm_fourcc.h>
diff --git a/drivers/gpu/drm/i915/Kconfig b/drivers/gpu/drm/i915/Kconfig
index db400aad88fa..1158a6b97f9a 100644
--- a/drivers/gpu/drm/i915/Kconfig
+++ b/drivers/gpu/drm/i915/Kconfig
@@ -10,6 +10,7 @@ config DRM_I915
# the shmem_readpage() which depends upon tmpfs
select SHMEM
select TMPFS
+ select DRM_CLIENT_SELECTION
select DRM_DISPLAY_DP_HELPER
select DRM_DISPLAY_DSC_HELPER
select DRM_DISPLAY_HDCP_HELPER
diff --git a/drivers/gpu/drm/i915/display/intel_display_driver.c b/drivers/gpu/drm/i915/display/intel_display_driver.c
index 069426d9260b..44de2d8591cd 100644
--- a/drivers/gpu/drm/i915/display/intel_display_driver.c
+++ b/drivers/gpu/drm/i915/display/intel_display_driver.c
@@ -11,7 +11,7 @@
#include <acpi/video.h>
#include <drm/display/drm_dp_mst_helper.h>
#include <drm/drm_atomic_helper.h>
-#include <drm/drm_client.h>
+#include <drm/drm_client_event.h>
#include <drm/drm_mode_config.h>
#include <drm/drm_privacy_screen_consumer.h>
#include <drm/drm_probe_helper.h>
diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c b/drivers/gpu/drm/nouveau/nouveau_display.c
index e2fd561cd23f..619a3efbe8c8 100644
--- a/drivers/gpu/drm/nouveau/nouveau_display.c
+++ b/drivers/gpu/drm/nouveau/nouveau_display.c
@@ -28,8 +28,8 @@

#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
+#include <drm/drm_client_event.h>
#include <drm/drm_crtc_helper.h>
-#include <drm/drm_fb_helper.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_probe_helper.h>
@@ -804,8 +804,7 @@ nouveau_display_suspend(struct drm_device *dev, bool runtime)
{
struct nouveau_display *disp = nouveau_display(dev);

- /* Disable console. */
- drm_fb_helper_set_suspend_unlocked(dev->fb_helper, true);
+ drm_client_dev_suspend(dev, false);

if (drm_drv_uses_atomic_modeset(dev)) {
if (!runtime) {
@@ -836,8 +835,7 @@ nouveau_display_resume(struct drm_device *dev, bool runtime)
}
}

- /* Enable console. */
- drm_fb_helper_set_suspend_unlocked(dev->fb_helper, false);
+ drm_client_dev_resume(dev, false);
}

int
diff --git a/drivers/gpu/drm/nouveau/nouveau_vga.c b/drivers/gpu/drm/nouveau/nouveau_vga.c
index ab4e11dc0b8a..a6c375a24154 100644
--- a/drivers/gpu/drm/nouveau/nouveau_vga.c
+++ b/drivers/gpu/drm/nouveau/nouveau_vga.c
@@ -2,7 +2,7 @@
#include <linux/vgaarb.h>
#include <linux/vga_switcheroo.h>

-#include <drm/drm_fb_helper.h>
+#include <drm/drm_client_event.h>

#include "nouveau_drv.h"
#include "nouveau_acpi.h"
diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
index 554b236c2328..6f071e61f764 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -35,6 +35,7 @@
#include <linux/vgaarb.h>

#include <drm/drm_cache.h>
+#include <drm/drm_client_event.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_device.h>
#include <drm/drm_file.h>
@@ -1542,7 +1543,7 @@ void radeon_device_fini(struct radeon_device *rdev)
* Called at driver suspend.
*/
int radeon_suspend_kms(struct drm_device *dev, bool suspend,
- bool fbcon, bool freeze)
+ bool notify_clients, bool freeze)
{
struct radeon_device *rdev;
struct pci_dev *pdev;
@@ -1634,9 +1635,9 @@ int radeon_suspend_kms(struct drm_device *dev, bool suspend,
pci_set_power_state(pdev, PCI_D3hot);
}

- if (fbcon) {
+ if (notify_clients) {
console_lock();
- radeon_fbdev_set_suspend(rdev, 1);
+ drm_client_dev_suspend(dev, true);
console_unlock();
}
return 0;
@@ -1649,7 +1650,7 @@ int radeon_suspend_kms(struct drm_device *dev, bool suspend,
* Returns 0 for success or an error on failure.
* Called at driver resume.
*/
-int radeon_resume_kms(struct drm_device *dev, bool resume, bool fbcon)
+int radeon_resume_kms(struct drm_device *dev, bool resume, bool notify_clients)
{
struct drm_connector *connector;
struct radeon_device *rdev = dev->dev_private;
@@ -1660,14 +1661,14 @@ int radeon_resume_kms(struct drm_device *dev, bool resume, bool fbcon)
if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
return 0;

- if (fbcon) {
+ if (notify_clients) {
console_lock();
}
if (resume) {
pci_set_power_state(pdev, PCI_D0);
pci_restore_state(pdev);
if (pci_enable_device(pdev)) {
- if (fbcon)
+ if (notify_clients)
console_unlock();
return -1;
}
@@ -1730,7 +1731,7 @@ int radeon_resume_kms(struct drm_device *dev, bool resume, bool fbcon)
/* reset hpd state */
radeon_hpd_init(rdev);
/* blat the mode back in */
- if (fbcon) {
+ if (notify_clients) {
drm_helper_resume_force_mode(dev);
/* turn on display hw */
drm_modeset_lock_all(dev);
@@ -1746,8 +1747,8 @@ int radeon_resume_kms(struct drm_device *dev, bool resume, bool fbcon)
if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled)
radeon_pm_compute_clocks(rdev);

- if (fbcon) {
- radeon_fbdev_set_suspend(rdev, 0);
+ if (notify_clients) {
+ drm_client_dev_resume(dev, true);
console_unlock();
}

diff --git a/drivers/gpu/drm/radeon/radeon_fbdev.c b/drivers/gpu/drm/radeon/radeon_fbdev.c
index 0aa20c8df546..d4a58bd679db 100644
--- a/drivers/gpu/drm/radeon/radeon_fbdev.c
+++ b/drivers/gpu/drm/radeon/radeon_fbdev.c
@@ -288,12 +288,6 @@ int radeon_fbdev_driver_fbdev_probe(struct drm_fb_helper *fb_helper,
return ret;
}

-void radeon_fbdev_set_suspend(struct radeon_device *rdev, int state)
-{
- if (rdev_to_drm(rdev)->fb_helper)
- drm_fb_helper_set_suspend(rdev_to_drm(rdev)->fb_helper, state);
-}
-
bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj)
{
struct drm_fb_helper *fb_helper = rdev_to_drm(rdev)->fb_helper;
diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h
index 12a1d99a1815..4063d3801e81 100644
--- a/drivers/gpu/drm/radeon/radeon_mode.h
+++ b/drivers/gpu/drm/radeon/radeon_mode.h
@@ -942,13 +942,10 @@ int radeon_fbdev_driver_fbdev_probe(struct drm_fb_helper *fb_helper,
struct drm_fb_helper_surface_size *sizes);
#define RADEON_FBDEV_DRIVER_OPS \
.fbdev_probe = radeon_fbdev_driver_fbdev_probe
-void radeon_fbdev_set_suspend(struct radeon_device *rdev, int state);
bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj);
#else
#define RADEON_FBDEV_DRIVER_OPS \
.fbdev_probe = NULL
-static inline void radeon_fbdev_set_suspend(struct radeon_device *rdev, int state)
-{ }
static inline bool radeon_fbdev_robj_is_fb(struct radeon_device *rdev, struct radeon_bo *robj)
{
return false;
diff --git a/drivers/gpu/drm/xe/Kconfig b/drivers/gpu/drm/xe/Kconfig
index ebd0879e04d4..bac96c0dd66e 100644
--- a/drivers/gpu/drm/xe/Kconfig
+++ b/drivers/gpu/drm/xe/Kconfig
@@ -8,6 +8,7 @@ config DRM_XE
select SHMEM
select TMPFS
select DRM_BUDDY
+ select DRM_CLIENT_SELECTION
select DRM_EXEC
select DRM_KMS_HELPER
select DRM_KUNIT_TEST_HELPERS if DRM_XE_KUNIT_TEST != n
diff --git a/include/drm/drm_client.h b/include/drm/drm_client.h
index bc0e66f9c425..3b13cf29ed55 100644
--- a/include/drm/drm_client.h
+++ b/include/drm/drm_client.h
@@ -63,6 +63,34 @@ struct drm_client_funcs {
* This callback is optional.
*/
int (*hotplug)(struct drm_client_dev *client);
+
+ /**
+ * @suspend:
+ *
+ * Called when suspending the device.
+ *
+ * This callback is optional.
+ *
+ * FIXME: Some callers hold the console lock when invoking this
+ * function. This interferes with fbdev emulation, which
+ * also tries to acquire the lock. Push the console lock
+ * into the callback and remove 'holds_console_lock'.
+ */
+ int (*suspend)(struct drm_client_dev *client, bool holds_console_lock);
+
+ /**
+ * @resume:
+ *
+ * Called when resuming the device from suspend.
+ *
+ * This callback is optional.
+ *
+ * FIXME: Some callers hold the console lock when invoking this
+ * function. This interferes with fbdev emulation, which
+ * also tries to acquire the lock. Push the console lock
+ * into the callback and remove 'holds_console_lock'.
+ */
+ int (*resume)(struct drm_client_dev *client, bool holds_console_lock);
};

/**
@@ -107,6 +135,13 @@ struct drm_client_dev {
*/
struct drm_mode_set *modesets;

+ /**
+ * @suspended:
+ *
+ * The client has been suspended.
+ */
+ bool suspended;
+
/**
* @hotplug_failed:
*
@@ -121,10 +156,6 @@ int drm_client_init(struct drm_device *dev, struct drm_client_dev *client,
void drm_client_release(struct drm_client_dev *client);
void drm_client_register(struct drm_client_dev *client);

-void drm_client_dev_unregister(struct drm_device *dev);
-void drm_client_dev_hotplug(struct drm_device *dev);
-void drm_client_dev_restore(struct drm_device *dev);
-
/**
* struct drm_client_buffer - DRM client buffer
*/
@@ -205,6 +236,4 @@ int drm_client_modeset_dpms(struct drm_client_dev *client, int mode);
drm_for_each_connector_iter(connector, iter) \
if (connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK)

-void drm_client_debugfs_init(struct drm_device *dev);
-
#endif
diff --git a/include/drm/drm_client_event.h b/include/drm/drm_client_event.h
new file mode 100644
index 000000000000..99863554b055
--- /dev/null
+++ b/include/drm/drm_client_event.h
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0 or MIT */
+
+#ifndef _DRM_CLIENT_EVENT_H_
+#define _DRM_CLIENT_EVENT_H_
+
+struct drm_device;
+
+#if defined(CONFIG_DRM_CLIENT)
+void drm_client_dev_unregister(struct drm_device *dev);
+void drm_client_dev_hotplug(struct drm_device *dev);
+void drm_client_dev_restore(struct drm_device *dev);
+void drm_client_dev_suspend(struct drm_device *dev, bool holds_console_lock);
+void drm_client_dev_resume(struct drm_device *dev, bool holds_console_lock);
+#else
+static inline void drm_client_dev_unregister(struct drm_device *dev)
+{ }
+static inline void drm_client_dev_hotplug(struct drm_device *dev)
+{ }
+static inline void drm_client_dev_restore(struct drm_device *dev)
+{ }
+static inline void drm_client_dev_suspend(struct drm_device *dev, bool holds_console_lock)
+{ }
+static inline void drm_client_dev_resume(struct drm_device *dev, bool holds_console_lock)
+{ }
+#endif
+
+#endif
--
2.46.2