kernel/linux.git/include/drm/drm_drv.h, branch v6.3.6

Merge tag 'drm-misc-next-2023-01-19' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

2023-01-24T16:36:29+00:00

drm-misc-next for $kernel-version: UAPI Changes: Cross-subsystem Changes: Core Changes: * Cleanup unneeded include statements wrt , and * Remove unused helper DRM_DEBUG_KMS_RATELIMITED() * fbdev: Remove obsolete aperture field from struct fb_device, plus driver cleanups; Remove unused flag FBINFO_MISC_FIRMWARE * MIPI-DSI: Fix brightness, plus rsp. driver updates * scheduler: Deprecate drm_sched_resubmit_jobs() * ttm: Fix MIPS build; Remove ttm_bo_wait(); Documentation fixes Driver Changes: * Remove obsolete drivers for userspace modesetting i810, mga, r128, savage, sis, tdfx, via * bridge: Support CDNS DSI J721E, plus DT bindings; lt9611: Various fixes and improvements; sil902x: Various fixes; Fixes * nouveau: Removed support for legacy ioctls; Replace zero-size array; Cleanups * panel: Fixes * radeon: Use new DRM logging helpers Signed-off-by: Daniel Vetter From: Thomas Zimmermann Link: https://patchwork.freedesktop.org/patch/msgid/Y8kDk5YX7Yz3eRhM@linux-uq9g

drm/nouveau: Remove support for legacy contexts/buffers

2023-01-13T08:22:02+00:00

Remove nouveau's support for legacy contexts and buffers. It was required by libdrm earlier than 2.4.33, released in March 2012. A previous attempt in 2013 to remove the functionality [1] had to be reverted [2] as there were still users left. Libdrm 2.4.33 is now almost 11 years old and it is time for userspace to move on. With the nouveau code gone, we can also remove the driver-feature bit DRIVER_KMS_LEGACY_CONTEXT. Signed-off-by: Thomas Zimmermann Reviewed-by: Karol Herbst Link: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7c510133d93dd6f15ca040733ba7b2891ed61fd1 # 1 Link: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c21eb21cb50d58e7cbdcb8b9e7ff68b85cfa5095 # 2 Link: https://patchwork.freedesktop.org/patch/msgid/20230112133858.17087-1-tzimmermann@suse.de

accel: add dedicated minor for accelerator devices

2022-11-22T11:14:44+00:00

The accelerator devices are exposed to user-space using a dedicated major. In addition, they are represented in /dev with new, dedicated device char names: /dev/accel/accel*. This is done to make sure any user-space software that tries to open a graphic card won't open the accelerator device by mistake. The above implies that the minor numbering should be separated from the rest of the DRM devices. However, to avoid code duplication, we want the drm_minor structure to be able to represent the accelerator device. To achieve this, we add a new drm_minor* to drm_device that represents the accelerator device. This pointer is initialized for drivers that declare they handle compute accelerator, using a new driver feature flag called DRIVER_COMPUTE_ACCEL. It is important to note that this driver feature is mutually exclusive with DRIVER_RENDER. Devices that want to expose both graphics and compute device char files should be handled by two drivers that are connected using the auxiliary bus framework. In addition, we define a different IDR to handle the accelerators minors. This is done to make the minor's index be identical to the device index in /dev/. Any access to the IDR is done solely by functions in accel_drv.c, as the IDR is define as static. The DRM core functions call those functions in case they detect the minor's type is DRM_MINOR_ACCEL. We define a separate accel_open function (from drm_open) that the accel drivers should set as their open callback function. Both these functions eventually call the same drm_open_helper(), which had to be changed to be non-static so it can be called from accel_drv.c. accel_open() only partially duplicates drm_open as I removed some code from it that handles legacy devices. To help new drivers, I defined DEFINE_DRM_ACCEL_FOPS macro to easily set the required function operations pointers structure. Signed-off-by: Oded Gabbay Reviewed-by: Greg Kroah-Hartman Reviewed-by: Jeffrey Hugo Reviewed-by: Dave Airlie Acked-by: Thomas Zimmermann Acked-by: Jacek Lawrynowicz Tested-by: Jacek Lawrynowicz Reviewed-by: Melissa Wen

drm: Move nomodeset kernel parameter to drivers/video

2022-11-16T12:26:12+00:00

Move the nomodeset kernel parameter to drivers/video to make it available to non-DRM drivers. Adapt the interface, but keep the DRM interface drm_firmware_drivers_only() to avoid churn within DRM. The function should later be inlined into callers. The parameter disables any DRM graphics driver that would replace a driver for firmware-provided scanout buffers. It is an option to easily fallback to basic graphics output if the hardware's native driver is broken. Moving it to a more prominent location wil make it available to fbdev as well. v2: * clarify the meaning of the nomodeset parameter (Javier) Signed-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas Link: https://patchwork.freedesktop.org/patch/msgid/20221111133024.9897-2-tzimmermann@suse.de

drm: Return error codes from struct drm_driver.gem_create_object

2021-12-02T10:12:39+00:00

GEM helper libraries use struct drm_driver.gem_create_object to let drivers override GEM object allocation. On failure, the call returns NULL. Change the semantics to make the calls return a pointer-encoded error. This aligns the callback with its callers. Fixes the ingenic driver, which already returns an error pointer. Also update the callers to handle the involved types more strictly. Signed-off-by: Thomas Zimmermann Reviewed-by: Steven Price Acked-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20211130095255.26710-1-tzimmermann@suse.de

drm: Decouple nomodeset from CONFIG_VGA_CONSOLE

2021-11-27T12:52:28+00:00

This relationship was only for historical reasons and the nomodeset option should be available even on platforms that don't enable CONFIG_VGA_CONSOLE. Suggested-by: Thomas Zimmermann Signed-off-by: Javier Martinez Canillas Acked-by: Thomas Zimmermann Acked-by: Jani Nikula Acked-by: Pekka Paalanen Link: https://patchwork.freedesktop.org/patch/msgid/20211112133230.1595307-5-javierm@redhat.com

drm: Move nomodeset kernel parameter to the DRM subsystem

2021-11-27T12:52:22+00:00

The "nomodeset" kernel cmdline parameter is handled by the vgacon driver but the exported vgacon_text_force() symbol is only used by DRM drivers. It makes much more sense for the parameter logic to be in the subsystem of the drivers that are making use of it. Let's move the vgacon_text_force() function and related logic to the DRM subsystem. While doing that, rename it to drm_firmware_drivers_only() and make it return true if "nomodeset" was used and false otherwise. This is a better description of the condition that the drivers are testing for. Suggested-by: Daniel Vetter Signed-off-by: Javier Martinez Canillas Acked-by: Thomas Zimmermann Acked-by: Jani Nikula Acked-by: Pekka Paalanen Acked-by: Greg Kroah-Hartman Link: https://patchwork.freedesktop.org/patch/msgid/20211112133230.1595307-4-javierm@redhat.com

drm: Update documentation and TODO of gem_prime_mmap hook

2021-11-11T11:06:57+00:00

The hook gem_prime_mmap in struct drm_driver is deprecated. Document the new requirements. Signed-off-by: Thomas Zimmermann Reviewed-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20211108102846.309-4-tzimmermann@suse.de

drm: IRQ midlayer is now legacy

2021-08-10T18:14:01+00:00

Hide the DRM midlayer behind CONFIG_DRM_LEGACY, make functions use the prefix drm_legacy_, and move declarations to drm_legacy.h. In struct drm_device, move the fields irq and irq_enabled behind CONFIG_DRM_LEGACY. All callers have been updated. Signed-off-by: Thomas Zimmermann Acked-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20210803090704.32152-15-tzimmermann@suse.de

drm: Fix 3 typos in the inline doc

2021-03-26T10:46:33+00:00

Fix the following typos: 1. When mentioning a list of functions, the function drm_atomic_helper_disable_plane is mentioned twice. 2. drop the word 'afterwards': s/afterwards after that/after that/' 3. drop extra 'the': s/but do not the support the full/but do not support the full/ Signed-off-by: Dafna Hirschfeld Reviewed-by: Simon Ser Signed-off-by: Simon Ser Link: https://patchwork.freedesktop.org/patch/msgid/20210326103216.7918-1-dafna.hirschfeld@collabora.com