kernel/linux.git/include/drm/drm_device.h, branch v6.12.80

drm/vblank: add dynamic per-crtc vblank configuration support

2024-07-26T21:40:10+00:00

We would like to be able to enable vblank_disable_immediate unconditionally, however there are a handful of cases where a small off delay is necessary (e.g. with PSR enabled). So, we would like to be able to adjust the vblank off delay and disable imminent values dynamically for a given CRTC. Since, it will allow drivers to apply static screen optimizations more quickly and consequently allow users to benefit more so from the power savings afforded by the aforementioned optimizations, while avoiding issues in cases where an off delay is still warranted. In particular, the PSR case requires a small off delay of 2 frames, otherwise display firmware isn't able to keep up with all of the requests made to amdgpu. So, introduce drm_crtc_vblank_on_config() which is like drm_crtc_vblank_on(), but it allows drivers to specify the vblank CRTC configuration before enabling vblanking support for a given CRTC. Signed-off-by: Hamza Mahfooz Acked-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20240725205109.209743-1-hamza.mahfooz@amd.com

drm: Remove source code for non-KMS drivers

2023-12-06T09:08:37+00:00

Remove all remaining source code for non-KMS drivers. These drivers have been removed in v6.3 and won't comeback. Signed-off-by: Thomas Zimmermann Reviewed-by: David Airlie Reviewed-by: Daniel Vetter Acked-by: Alex Deucher Link: https://patchwork.freedesktop.org/patch/msgid/20231122122449.11588-13-tzimmermann@suse.de

drm/debugfs: remove dev->debugfs_list and debugfs_mutex v2

2023-09-01T06:53:05+00:00

The mutex was completely pointless in the first place since any parallel adding of files to this list would result in random behavior since the list is filled and consumed multiple times. Completely drop that approach and just create the files directly but return -ENODEV while opening the file when the minors are not registered yet. v2: rebase on debugfs directory rework, limit access before minors are registered. Signed-off-by: Christian König Link: https://patchwork.freedesktop.org/patch/msgid/20230829110115.3442-5-christian.koenig@amd.com Reviewed-by: Andi Shyti

drm/debugfs: rework debugfs directory creation v5

2023-09-01T06:51:18+00:00

Instead of the per minor directories only create a single debugfs directory for the whole device directly when the device is initialized. For DRM devices each minor gets a symlink to the per device directory for now until we can be sure that this isn't useful any more in any way. Accel devices create only the per device directory and also drops the mid layer callback to create driver specific files. v2: cleanup accel component as well v3: fix typo when debugfs is disabled v4: call drm_debugfs_dev_fini() during release as well, some kerneldoc typos fixed v5: rebased and one more kerneldoc fix Signed-off-by: Christian König Link: https://patchwork.freedesktop.org/patch/msgid/20230829110115.3442-4-christian.koenig@amd.com Reviewed-by: Andi Shyti

Merge tag 'drm-misc-next-2023-01-12' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

2023-01-16T05:33:28+00:00

drm-misc-next for v6.3: UAPI Changes: * fourcc: Document Open Source user waiver Cross-subsystem Changes: * firmware: fix color-format selection for system framebuffers Core Changes: * format-helper: Add conversion from XRGB8888 to various sysfb formats; Make XRGB8888 the only driver-emulated legacy format * fb-helper: Avoid blank consoles from selecting an incorrect color format * probe-helper: Enable/disable HPD on connectors plus driver updates * Use drm_dbg_ helpers in several places * docs: Document defaults for CRTC backgrounds; Document use of drm_minor Driver Changes: * arm/hdlcd: Use new debugfs helpers * gud: Use new debugfs helpers * panel: Support Visionox VTDR6130 AMOLED DSI; Support Himax HX8394; Convert many drivers to common generic DSI write-sequence helper * v3d: Do not opencode drm_gem_object_lookup() * vc4: Various HVS an CRTC fixes * vkms: Fix SEGFAULT from incorrect GEM-buffer mapping * Convert various drivers to i2c probe_new() Signed-off-by: Dave Airlie From: Thomas Zimmermann Link: https://patchwork.freedesktop.org/patch/msgid/Y8ADeSzZDj+tpibF@linux-uq9g

drm: document better that drivers shouldn't use drm_minor directly

2023-01-11T23:19:14+00:00

The documentation for struct drm_minor already states this, but that's not always that easy to find. Also due to historical reasons we still have the minor-centric interfaces (like drm_debugfs_create_files), but since this is now getting fixed we can put a few more pointers in place as to how this should be done ideally. Note that debugfs isn't there yet for all cases (debugfs files on kms objects like crtc/connector aren't supported, neither debugfs files with full fops), so the debugfs side of this is still rather aspirational and more for new users than converting everything existing. todo.rst covers the additional work needed already. Motivated by some discussion with Rodrigo on irc about how drm/xe should lay out its sysfs interfaces. v2: Make the debugfs situation clearer in the commit message, but don't elaborate more in the actual kerneldoc to avoid distracting from the main message around sysfs (Jani) Also fix some typos. Acked-by: Rodrigo Vivi Reviewed-by: Melissa Wen Reviewed-by: Maíra Canal Acked-by: Maxime Ripard Acked-by: Jani Nikula Cc: Rodrigo Vivi Cc: Wambui Karuga Cc: Maíra Canal Cc: Maxime Ripard Cc: Melissa Wen Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20230109164604.3860862-1-daniel.vetter@ffwll.ch

Merge tag 'drm-misc-next-2023-01-03' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

2023-01-04T13:59:25+00:00

drm-misc-next for v6.3: UAPI Changes: * connector: Support analog-TV mode property * media: Add MEDIA_BUS_FMT_RGB565_1X24_CPADHI, MEDIA_BUS_FMT_RGB666_1X18 and MEDIA_BUS_FMT_RGB666_1X24_CPADHI Cross-subsystem Changes: * dma-buf: Documentation fixes * i2c: Introduce i2c_client_get_device_id() helper Core Changes: * Improve support for analog TV output * bridge: Remove unused drm_bridge_chain functions * debugfs: Add per-device helpers and convert various DRM drivers * dp-mst: Various fixes * fbdev emulation: Always pick 32 bpp as default * KUnit: Add tests for managed helpers; Various cleanups * panel-orientation: Add quirks for Lenovo Yoga Tab 3 X90F and DynaBook K50 * TTM: Open-code ttm_bo_wait() and remove the helper Driver Changes: * Fix preferred depth and bpp values throughout DRM drivers * Remove #CONFIG_PM guards throughout DRM drivers * ast: Various fixes * bridge: Implement i2c's probe_new in various drivers; Fixes; ite-it6505: Locking fixes, Cache EDID data; ite-it66121: Support IT6610 chip, Cleanups; lontium-tl9611: Fix HDMI on DragonBoard 845c; parade-ps8640: Use atomic bridge functions * gud: Convert to DRM shadow-plane helpers; Perform flushing synchronously during atomic update * ili9486: Support 16-bit pixel data * imx: Split off IPUv3 driver; Various fixes * mipi-dbi: Convert to DRM shadow-plane helpers plus rsp driver changes;i Support separate I/O-voltage supply * mxsfb: Depend on ARCH_MXS or ARCH_MXC * omapdrm: Various fixes * panel: Use ktime_get_boottime() to measure power-down delay in various drivers; Fix auto-suspend delay in various drivers; orisetech-ota5601a: Add support * sprd: Cleanups * sun4i: Convert to new TV-mode property * tidss: Various fixes * v3d: Various fixes * vc4: Convert to new TV-mode property; Support Kunit tests; Cleanups; dpi: Support RGB565 and RGB666 formats; dsi: Convert DSI driver to bridge * virtio: Improve tracing * vkms: Support small cursors in IGT tests; Various fixes Signed-off-by: Daniel Vetter From: Thomas Zimmermann Link: https://patchwork.freedesktop.org/patch/msgid/Y7QIwlfElAYWxRcR@linux-uq9g

drm/debugfs: create device-centered debugfs functions

2022-12-22T17:56:28+00:00

Introduce the ability to track requests for the addition of DRM debugfs files at any time and have them added all at once during drm_dev_register(). Drivers can add DRM debugfs files to a device-managed list and, during drm_dev_register(), all added files will be created at once. Now, the drivers can use the functions drm_debugfs_add_file() and drm_debugfs_add_files() to create DRM debugfs files instead of using the drm_debugfs_create_files() function. Co-developed-by: Wambui Karuga Signed-off-by: Wambui Karuga Signed-off-by: Maíra Canal Reviewed-by: Maxime Ripard Reviewed-by: Melissa Wen Acked-by: Daniel Vetter Signed-off-by: Maíra Canal Link: https://patchwork.freedesktop.org/patch/msgid/20221219120621.15086-2-mcanal@igalia.com

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: Declare hashtable as legacy

2021-11-30T08:41:28+00:00

The DRM hashtable code is only used by internal functions for legacy UMS drivers. Move the implementation behind CONFIG_DRM_LEGACY and the declarations into legacy header files. Unexport the symbols. Signed-off-by: Thomas Zimmermann Acked-by: Daniel Vetter Acked-by: Alex Deucher Link: https://patchwork.freedesktop.org/patch/msgid/20211129094841.22499-4-tzimmermann@suse.de