Thomas Zimmermann
2024-Aug-12 08:28 UTC
[PATCH v2 0/9] drm/{amdgpu,nouveau}: Remove old fbdev hooks
After switching all drivers' fbdev emulation to DRM client, the old fbdev hooks are now obsolete. Only amgdpu and nouveau still use them in a several places. Remove the hooks from the drivers and the DRM core. The series would ideally be merged at once via drm-misc-next. v2: - call vga_switcheroo_process_delayed_switch() from drm_lastclose() (Sima) - documentation updates Thomas Zimmermann (9): drm: Do delayed switcheroo in drm_lastclose() drm/amdgpu: Do not set struct drm_driver.lastclose drm/nouveau: Do not set struct drm_driver.lastclose drm/nouveau: Do not set struct drm_mode_config_funcs.output_poll_changed drm/nouveau: Implement switcheroo reprobe with drm_client_dev_hotplug() drm/fbdev-helper: Update documentation on obsolete callbacks drm/fbdev-helper: Remove drm_fb_helper_output_poll_changed() drm: Remove struct drm_driver.lastclose drm: Remove struct drm_mode_config_funcs.output_poll_changed drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 - drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 2 -- drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 17 ----------- drivers/gpu/drm/drm_fb_helper.c | 37 +++++------------------ drivers/gpu/drm/drm_file.c | 32 ++++++-------------- drivers/gpu/drm/drm_internal.h | 1 - drivers/gpu/drm/drm_probe_helper.c | 10 +----- drivers/gpu/drm/nouveau/dispnv50/disp.c | 1 - drivers/gpu/drm/nouveau/nouveau_display.c | 1 - drivers/gpu/drm/nouveau/nouveau_drm.c | 1 - drivers/gpu/drm/nouveau/nouveau_vga.c | 10 ++---- drivers/gpu/drm/nouveau/nouveau_vga.h | 1 - drivers/gpu/vga/vga_switcheroo.c | 3 +- include/drm/drm_drv.h | 28 ----------------- include/drm/drm_fb_helper.h | 6 ---- include/drm/drm_mode_config.h | 16 ---------- 16 files changed, 21 insertions(+), 146 deletions(-) -- 2.46.0
Thomas Zimmermann
2024-Aug-12 08:28 UTC
[PATCH v2 1/9] drm: Do delayed switcheroo in drm_lastclose()
Amdgpu and nouveau call vga_switcheroo_process_delayed_switch() from their lastclose callbacks. Call it from drm_lastclose(), so that the driver functions can finally be removed. Only PCI devices with enabled switcheroo do the delayed switching. The call has no effect on other hardware. v2: - move change to drm_lastclose() (Sima) - update docs for vga_switcheroo_process_delayed_switch() Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de> --- drivers/gpu/drm/drm_file.c | 4 ++++ drivers/gpu/vga/vga_switcheroo.c | 3 +-- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/drm_file.c b/drivers/gpu/drm/drm_file.c index 714e42b05108..513bef816ae9 100644 --- a/drivers/gpu/drm/drm_file.c +++ b/drivers/gpu/drm/drm_file.c @@ -38,6 +38,7 @@ #include <linux/pci.h> #include <linux/poll.h> #include <linux/slab.h> +#include <linux/vga_switcheroo.h> #include <drm/drm_client.h> #include <drm/drm_drv.h> @@ -404,6 +405,9 @@ void drm_lastclose(struct drm_device * dev) drm_dbg_core(dev, "driver lastclose completed\n"); drm_client_dev_restore(dev); + + if (dev_is_pci(dev->dev)) + vga_switcheroo_process_delayed_switch(); } /** diff --git a/drivers/gpu/vga/vga_switcheroo.c b/drivers/gpu/vga/vga_switcheroo.c index 365e6ddbe90f..18f2c92beff8 100644 --- a/drivers/gpu/vga/vga_switcheroo.c +++ b/drivers/gpu/vga/vga_switcheroo.c @@ -926,8 +926,7 @@ static void vga_switcheroo_debugfs_init(struct vgasr_priv *priv) /** * vga_switcheroo_process_delayed_switch() - helper for delayed switching * - * Process a delayed switch if one is pending. DRM drivers should call this - * from their ->lastclose callback. + * Process a delayed switch if one is pending. * * Return: 0 on success. -EINVAL if no delayed switch is pending, if the client * has unregistered in the meantime or if there are other clients blocking the -- 2.46.0
Thomas Zimmermann
2024-Aug-12 08:28 UTC
[PATCH v2 2/9] drm/amdgpu: Do not set struct drm_driver.lastclose
Remove the implementation of struct drm_driver.lastclose. The hook was only necessary before in-kernel DRM clients existed, but is now obsolete. The code in amdgpu_driver_lastclose_kms() is performed by drm_lastclose(). v2: - update commit message Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de> --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 - drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 2 -- drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 17 ----------------- 3 files changed, 20 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 137a88b8de45..4baeb6519fda 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -1484,7 +1484,6 @@ extern const int amdgpu_max_kms_ioctl; int amdgpu_driver_load_kms(struct amdgpu_device *adev, unsigned long flags); void amdgpu_driver_unload_kms(struct drm_device *dev); -void amdgpu_driver_lastclose_kms(struct drm_device *dev); int amdgpu_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv); void amdgpu_driver_postclose_kms(struct drm_device *dev, struct drm_file *file_priv); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index 094498a0964b..5dd39e6c6223 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -2953,7 +2953,6 @@ static const struct drm_driver amdgpu_kms_driver = { DRIVER_SYNCOBJ_TIMELINE, .open = amdgpu_driver_open_kms, .postclose = amdgpu_driver_postclose_kms, - .lastclose = amdgpu_driver_lastclose_kms, .ioctls = amdgpu_ioctls_kms, .num_ioctls = ARRAY_SIZE(amdgpu_ioctls_kms), .dumb_create = amdgpu_mode_dumb_create, @@ -2980,7 +2979,6 @@ const struct drm_driver amdgpu_partition_driver = { DRIVER_SYNCOBJ_TIMELINE, .open = amdgpu_driver_open_kms, .postclose = amdgpu_driver_postclose_kms, - .lastclose = amdgpu_driver_lastclose_kms, .ioctls = amdgpu_ioctls_kms, .num_ioctls = ARRAY_SIZE(amdgpu_ioctls_kms), .dumb_create = amdgpu_mode_dumb_create, diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c index 66782be5917b..0a799942343d 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c @@ -1269,23 +1269,6 @@ int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) return 0; } - -/* - * Outdated mess for old drm with Xorg being in charge (void function now). - */ -/** - * amdgpu_driver_lastclose_kms - drm callback for last close - * - * @dev: drm dev pointer - * - * Switch vga_switcheroo state after last close (all asics). - */ -void amdgpu_driver_lastclose_kms(struct drm_device *dev) -{ - drm_fb_helper_lastclose(dev); - vga_switcheroo_process_delayed_switch(); -} - /** * amdgpu_driver_open_kms - drm callback for open * -- 2.46.0
Thomas Zimmermann
2024-Aug-12 08:28 UTC
[PATCH v2 3/9] drm/nouveau: Do not set struct drm_driver.lastclose
Remove the implementation of struct drm_driver.lastclose. The hook was only necessary before in-kernel DRM clients existed, but is now obsolete. The code in nouveau_vga_lastclose() is performed by drm_lastclose(). v2: - update commit description Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de> --- drivers/gpu/drm/nouveau/nouveau_drm.c | 1 - drivers/gpu/drm/nouveau/nouveau_vga.c | 7 ------- drivers/gpu/drm/nouveau/nouveau_vga.h | 1 - 3 files changed, 9 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c index ac7c60fb14d3..4a9a9b9c3935 100644 --- a/drivers/gpu/drm/nouveau/nouveau_drm.c +++ b/drivers/gpu/drm/nouveau/nouveau_drm.c @@ -1303,7 +1303,6 @@ driver_stub = { DRIVER_RENDER, .open = nouveau_drm_open, .postclose = nouveau_drm_postclose, - .lastclose = nouveau_vga_lastclose, #if defined(CONFIG_DEBUG_FS) .debugfs_init = nouveau_drm_debugfs_init, diff --git a/drivers/gpu/drm/nouveau/nouveau_vga.c b/drivers/gpu/drm/nouveau/nouveau_vga.c index 2525e08938b3..ee637f1fe03d 100644 --- a/drivers/gpu/drm/nouveau/nouveau_vga.c +++ b/drivers/gpu/drm/nouveau/nouveau_vga.c @@ -127,10 +127,3 @@ nouveau_vga_fini(struct nouveau_drm *drm) if (runtime && nouveau_is_v1_dsm() && !nouveau_is_optimus()) vga_switcheroo_fini_domain_pm_ops(drm->dev->dev); } - - -void -nouveau_vga_lastclose(struct drm_device *dev) -{ - vga_switcheroo_process_delayed_switch(); -} diff --git a/drivers/gpu/drm/nouveau/nouveau_vga.h b/drivers/gpu/drm/nouveau/nouveau_vga.h index 951a83f984dd..63be415d2a44 100644 --- a/drivers/gpu/drm/nouveau/nouveau_vga.h +++ b/drivers/gpu/drm/nouveau/nouveau_vga.h @@ -4,6 +4,5 @@ void nouveau_vga_init(struct nouveau_drm *); void nouveau_vga_fini(struct nouveau_drm *); -void nouveau_vga_lastclose(struct drm_device *dev); #endif -- 2.46.0
Thomas Zimmermann
2024-Aug-12 08:28 UTC
[PATCH v2 4/9] drm/nouveau: Do not set struct drm_mode_config_funcs.output_poll_changed
The output_poll_changed hook was only necessary before in-kernel DRM clients existed, but is now obsolete. The client code handles display hotplugging internally. v2: - fix commit description Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de> Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch> --- drivers/gpu/drm/nouveau/dispnv50/disp.c | 1 - drivers/gpu/drm/nouveau/nouveau_display.c | 1 - 2 files changed, 2 deletions(-) diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c index e4c8ce6dd40a..eed579a6c858 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/disp.c +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c @@ -2648,7 +2648,6 @@ nv50_disp_atomic_state_alloc(struct drm_device *dev) static const struct drm_mode_config_funcs nv50_disp_func = { .fb_create = nouveau_user_framebuffer_create, - .output_poll_changed = drm_fb_helper_output_poll_changed, .atomic_check = nv50_disp_atomic_check, .atomic_commit = nv50_disp_atomic_commit, .atomic_state_alloc = nv50_disp_atomic_state_alloc, diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c b/drivers/gpu/drm/nouveau/nouveau_display.c index 8a87e9697a42..e2fd561cd23f 100644 --- a/drivers/gpu/drm/nouveau/nouveau_display.c +++ b/drivers/gpu/drm/nouveau/nouveau_display.c @@ -391,7 +391,6 @@ nouveau_user_framebuffer_create(struct drm_device *dev, static const struct drm_mode_config_funcs nouveau_mode_config_funcs = { .fb_create = nouveau_user_framebuffer_create, - .output_poll_changed = drm_fb_helper_output_poll_changed, }; -- 2.46.0
Thomas Zimmermann
2024-Aug-12 08:28 UTC
[PATCH v2 5/9] drm/nouveau: Implement switcheroo reprobe with drm_client_dev_hotplug()
Replace the call to drm_fb_helper_output_poll_changed() with a call to drm_client_dev_hotplug(). It is equivalent in functionality, but uses the DRM client infrastructure. v2: - fix commit description Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de> Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch> --- drivers/gpu/drm/nouveau/nouveau_vga.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_vga.c b/drivers/gpu/drm/nouveau/nouveau_vga.c index ee637f1fe03d..ab4e11dc0b8a 100644 --- a/drivers/gpu/drm/nouveau/nouveau_vga.c +++ b/drivers/gpu/drm/nouveau/nouveau_vga.c @@ -58,8 +58,9 @@ static void nouveau_switcheroo_reprobe(struct pci_dev *pdev) { struct nouveau_drm *drm = pci_get_drvdata(pdev); + struct drm_device *dev = drm->dev; - drm_fb_helper_output_poll_changed(drm->dev); + drm_client_dev_hotplug(dev); } static bool -- 2.46.0
Thomas Zimmermann
2024-Aug-12 08:28 UTC
[PATCH v2 6/9] drm/fbdev-helper: Update documentation on obsolete callbacks
The old callbacks lastclose and output_poll_changed are deprecated and unused. Remove them from the documentation. Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de> --- drivers/gpu/drm/drm_fb_helper.c | 22 +++++++--------------- 1 file changed, 7 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 3f7da78849e4..fe5667477839 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -89,14 +89,6 @@ static DEFINE_MUTEX(kernel_fb_helper_lock); * interfaces. Drivers that use one of the shared memory managers, TTM, SHMEM, * DMA, should instead use the corresponding fbdev emulation. * - * Existing fbdev implementations should restore the fbdev console by using - * drm_fb_helper_lastclose() as their &drm_driver.lastclose callback. - * They should also notify the fb helper code from updates to the output - * configuration by using drm_fb_helper_output_poll_changed() as their - * &drm_mode_config_funcs.output_poll_changed callback. New implementations - * of fbdev should be build on top of struct &drm_client_funcs, which handles - * this automatically. Setting the old callbacks should be avoided. - * * For suspend/resume consider using drm_mode_config_helper_suspend() and * drm_mode_config_helper_resume() which takes care of fbdev as well. * @@ -260,12 +252,12 @@ __drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper, * drm_fb_helper_restore_fbdev_mode_unlocked - restore fbdev configuration * @fb_helper: driver-allocated fbdev helper, can be NULL * - * This should be called from driver's drm &drm_driver.lastclose callback - * when implementing an fbcon on top of kms using this helper. This ensures that - * the user isn't greeted with a black screen when e.g. X dies. + * This helper should be called from fbdev emulation's &drm_client_funcs.restore + * callback. It ensures that the user isn't greeted with a black screen when the + * userspace compositor releases the display device. * - * RETURNS: - * Zero if everything went ok, negative error code otherwise. + * Returns: + * 0 on success, or a negative errno code otherwise. */ int drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper) { @@ -2003,8 +1995,8 @@ EXPORT_SYMBOL(drm_fb_helper_hotplug_event); * drm_fb_helper_lastclose - DRM driver lastclose helper for fbdev emulation * @dev: DRM device * - * This function can be used as the &drm_driver->lastclose callback for drivers - * that only need to call drm_fb_helper_restore_fbdev_mode_unlocked(). + * This function is obsolete. Call drm_fb_helper_restore_fbdev_mode_unlocked() + * instead. */ void drm_fb_helper_lastclose(struct drm_device *dev) { -- 2.46.0
Thomas Zimmermann
2024-Aug-12 08:28 UTC
[PATCH v2 7/9] drm/fbdev-helper: Remove drm_fb_helper_output_poll_changed()
The function is unused. Remove it. Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de> --- drivers/gpu/drm/drm_fb_helper.c | 15 --------------- include/drm/drm_fb_helper.h | 6 ------ 2 files changed, 21 deletions(-) diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index fe5667477839..29c53f9f449c 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -2003,18 +2003,3 @@ void drm_fb_helper_lastclose(struct drm_device *dev) drm_fb_helper_restore_fbdev_mode_unlocked(dev->fb_helper); } EXPORT_SYMBOL(drm_fb_helper_lastclose); - -/** - * drm_fb_helper_output_poll_changed - DRM mode config \.output_poll_changed - * helper for fbdev emulation - * @dev: DRM device - * - * This function can be used as the - * &drm_mode_config_funcs.output_poll_changed callback for drivers that only - * need to call drm_fbdev.hotplug_event(). - */ -void drm_fb_helper_output_poll_changed(struct drm_device *dev) -{ - drm_fb_helper_hotplug_event(dev->fb_helper); -} -EXPORT_SYMBOL(drm_fb_helper_output_poll_changed); diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h index 375737fd6c36..699f2790b9ac 100644 --- a/include/drm/drm_fb_helper.h +++ b/include/drm/drm_fb_helper.h @@ -271,9 +271,7 @@ int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper); int drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper); int drm_fb_helper_debug_enter(struct fb_info *info); int drm_fb_helper_debug_leave(struct fb_info *info); - void drm_fb_helper_lastclose(struct drm_device *dev); -void drm_fb_helper_output_poll_changed(struct drm_device *dev); #else static inline void drm_fb_helper_prepare(struct drm_device *dev, struct drm_fb_helper *helper, @@ -401,10 +399,6 @@ static inline int drm_fb_helper_debug_leave(struct fb_info *info) static inline void drm_fb_helper_lastclose(struct drm_device *dev) { } - -static inline void drm_fb_helper_output_poll_changed(struct drm_device *dev) -{ -} #endif #endif -- 2.46.0
Thomas Zimmermann
2024-Aug-12 08:28 UTC
[PATCH v2 8/9] drm: Remove struct drm_driver.lastclose
The lastclose callback in struct drm_driver is unused. Remove it. Also update documentation. v2: - update to use drm_lastclose() - fix typo in documentation Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de> Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch> --- drivers/gpu/drm/drm_file.c | 28 ++++++---------------------- drivers/gpu/drm/drm_internal.h | 1 - include/drm/drm_drv.h | 28 ---------------------------- 3 files changed, 6 insertions(+), 51 deletions(-) diff --git a/drivers/gpu/drm/drm_file.c b/drivers/gpu/drm/drm_file.c index 513bef816ae9..e8a841e70934 100644 --- a/drivers/gpu/drm/drm_file.c +++ b/drivers/gpu/drm/drm_file.c @@ -63,15 +63,6 @@ bool drm_dev_needs_global_mutex(struct drm_device *dev) if (dev->driver->load || dev->driver->unload) return true; - /* - * Drivers with the lastclose callback assume that it's synchronized - * against concurrent opens, which again needs the BKL. The proper fix - * is to use the drm_client infrastructure with proper locking for each - * client. - */ - if (dev->driver->lastclose) - return true; - return false; } @@ -396,14 +387,8 @@ int drm_open(struct inode *inode, struct file *filp) } EXPORT_SYMBOL(drm_open); -void drm_lastclose(struct drm_device * dev) +static void drm_lastclose(struct drm_device *dev) { - drm_dbg_core(dev, "\n"); - - if (dev->driver->lastclose) - dev->driver->lastclose(dev); - drm_dbg_core(dev, "driver lastclose completed\n"); - drm_client_dev_restore(dev); if (dev_is_pci(dev->dev)) @@ -416,9 +401,9 @@ void drm_lastclose(struct drm_device * dev) * @filp: file pointer. * * This function must be used by drivers as their &file_operations.release - * method. It frees any resources associated with the open file, and calls the - * &drm_driver.postclose driver callback. If this is the last open file for the - * DRM device also proceeds to call the &drm_driver.lastclose driver callback. + * method. It frees any resources associated with the open file. If this + * is the last open file for the DRM device, it also restores the active + * in-kernel DRM client. * * RETURNS: * @@ -488,9 +473,8 @@ void drm_file_update_pid(struct drm_file *filp) * * This function may be used by drivers as their &file_operations.release * method. It frees any resources associated with the open file prior to taking - * the drm_global_mutex, which then calls the &drm_driver.postclose driver - * callback. If this is the last open file for the DRM device also proceeds to - * call the &drm_driver.lastclose driver callback. + * the drm_global_mutex. If this is the last open file for the DRM device, it + * then restores the active in-kernel DRM client. * * RETURNS: * diff --git a/drivers/gpu/drm/drm_internal.h b/drivers/gpu/drm/drm_internal.h index 690505a1f7a5..23c99803af44 100644 --- a/drivers/gpu/drm/drm_internal.h +++ b/drivers/gpu/drm/drm_internal.h @@ -53,7 +53,6 @@ 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); -void drm_lastclose(struct drm_device *dev); #ifdef CONFIG_PCI diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h index cd37936c3926..02ea4e3248fd 100644 --- a/include/drm/drm_drv.h +++ b/include/drm/drm_drv.h @@ -228,34 +228,6 @@ struct drm_driver { */ void (*postclose) (struct drm_device *, struct drm_file *); - /** - * @lastclose: - * - * Called when the last &struct drm_file has been closed and there's - * currently no userspace client for the &struct drm_device. - * - * Modern drivers should only use this to force-restore the fbdev - * framebuffer using drm_fb_helper_restore_fbdev_mode_unlocked(). - * Anything else would indicate there's something seriously wrong. - * Modern drivers can also use this to execute delayed power switching - * state changes, e.g. in conjunction with the :ref:`vga_switcheroo` - * infrastructure. - * - * This is called after @postclose hook has been called. - * - * NOTE: - * - * All legacy drivers use this callback to de-initialize the hardware. - * This is purely because of the shadow-attach model, where the DRM - * kernel driver does not really own the hardware. Instead ownershipe is - * handled with the help of userspace through an inheritedly racy dance - * to set/unset the VT into raw mode. - * - * Legacy drivers initialize the hardware in the @firstopen callback, - * which isn't even called for modern drivers. - */ - void (*lastclose) (struct drm_device *); - /** * @unload: * -- 2.46.0
Thomas Zimmermann
2024-Aug-12 08:28 UTC
[PATCH v2 9/9] drm: Remove struct drm_mode_config_funcs.output_poll_changed
The output_poll_changed hook in struct drm_mode_config_funcs is unused. Remove it. The helper drm_client_dev_hotplug() implements the callback's functionality. Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de> Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch> --- drivers/gpu/drm/drm_probe_helper.c | 10 +--------- include/drm/drm_mode_config.h | 16 ---------------- 2 files changed, 1 insertion(+), 25 deletions(-) diff --git a/drivers/gpu/drm/drm_probe_helper.c b/drivers/gpu/drm/drm_probe_helper.c index 285290067056..92f21764246f 100644 --- a/drivers/gpu/drm/drm_probe_helper.c +++ b/drivers/gpu/drm/drm_probe_helper.c @@ -714,7 +714,7 @@ EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); * @dev: drm_device whose connector state changed * * This function fires off the uevent for userspace and also calls the - * output_poll_changed function, which is most commonly used to inform the fbdev + * client hotplug function, which is most commonly used to inform the fbdev * emulation code and allow it to update the fbcon output configuration. * * Drivers should call this from their hotplug handling code when a change is @@ -730,11 +730,7 @@ EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); */ void drm_kms_helper_hotplug_event(struct drm_device *dev) { - /* send a uevent + call fbdev */ drm_sysfs_hotplug_event(dev); - if (dev->mode_config.funcs->output_poll_changed) - dev->mode_config.funcs->output_poll_changed(dev); - drm_client_dev_hotplug(dev); } EXPORT_SYMBOL(drm_kms_helper_hotplug_event); @@ -750,11 +746,7 @@ void drm_kms_helper_connector_hotplug_event(struct drm_connector *connector) { struct drm_device *dev = connector->dev; - /* send a uevent + call fbdev */ drm_sysfs_connector_hotplug_event(connector); - if (dev->mode_config.funcs->output_poll_changed) - dev->mode_config.funcs->output_poll_changed(dev); - drm_client_dev_hotplug(dev); } EXPORT_SYMBOL(drm_kms_helper_connector_hotplug_event); diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h index ab0f167474b1..271765e2e9f2 100644 --- a/include/drm/drm_mode_config.h +++ b/include/drm/drm_mode_config.h @@ -97,22 +97,6 @@ struct drm_mode_config_funcs { */ const struct drm_format_info *(*get_format_info)(const struct drm_mode_fb_cmd2 *mode_cmd); - /** - * @output_poll_changed: - * - * Callback used by helpers to inform the driver of output configuration - * changes. - * - * Drivers implementing fbdev emulation use drm_kms_helper_hotplug_event() - * to call this hook to inform the fbdev helper of output changes. - * - * This hook is deprecated, drivers should instead implement fbdev - * support with struct drm_client, which takes care of any necessary - * hotplug event forwarding already without further involvement by - * the driver. - */ - void (*output_poll_changed)(struct drm_device *dev); - /** * @mode_valid: * -- 2.46.0
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- [PATCH 0/8] drm/{amdgpu,nouveau}: Remove old fbdev hooks
- [PATCH v2 6/9] drm/fbdev-helper: Update documentation on obsolete callbacks
- [PATCH v2 2/9] drm/amdgpu: Do not set struct drm_driver.lastclose
- [PATCH v2 7/9] drm/fbdev-helper: Remove drm_fb_helper_output_poll_changed()
- [PATCH v2 2/9] drm/amdgpu: Do not set struct drm_driver.lastclose