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
