linux-toradex.git/drivers/gpu/drm/Makefile, branch v6.11-rc7

drm/bridge-connector: move to DRM_DISPLAY_HELPER module

2024-09-03T08:18:31+00:00

drm_bridge_connector is a "leaf" driver, belonging to the display
helper, rather than the "CRTC" drm_kms_helper module. Move the driver
to the drm/display and add necessary Kconfig selection clauses.

Suggested-by: Maxime Ripard 
Acked-by: Maxime Ripard 
Signed-off-by: Dmitry Baryshkov 
Link: https://patchwork.freedesktop.org/patch/msgid/20240903-drm-bridge-connector-fix-hdmi-reset-v5-2-daebde6d9857@linaro.org
Signed-off-by: Maxime Ripard

drm/fbdev-generic: Convert to fbdev-ttm

2024-05-02T09:33:32+00:00

Only TTM-based drivers use fbdev-generic. Rename it to fbdev-ttm and
change the symbol infix from _generic_ to _ttm_. Link the source file
into TTM helpers, so that it is only build if TTM-based drivers have
been selected. Select DRM_TTM_HELPER for loongson.

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Javier Martinez Canillas 
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-43-tzimmermann@suse.de

drm/fbdev: Add fbdev-shmem

2024-05-02T09:33:15+00:00

Add an fbdev emulation for SHMEM-based memory managers. The code is
similar to fbdev-generic, but does not require an additional shadow
buffer for mmap(). Fbdev-shmem operates directly on the buffer object's
SHMEM pages. Fbdev's deferred-I/O mechanism updates the hardware state
on write operations.

The memory pages of GEM SHMEM cannot be detected by fbdefio. Therefore
fbdev-shmem implements the .get_page() hook in struct fb_deferred_io.
The fbdefio helpers call this hook to retrieve the page directly from
fbdev-shmem instead of trying to detect it internally.

v3:
- clarify on get_page mechanism in commit description (Javier)
v2:
- use drm_driver_legacy_fb_format() (Geert)

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Javier Martinez Canillas 
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-9-tzimmermann@suse.de

drm/panic: Add a drm panic handler

2024-04-15T14:12:49+00:00

This module displays a user friendly message when a kernel panic
occurs. It currently doesn't contain any debug information,
but that can be added later.

v2
 * Use get_scanout_buffer() instead of the drm client API.
  (Thomas Zimmermann)
 * Add the panic reason to the panic message (Nerdopolis)
 * Add an exclamation mark (Nerdopolis)

v3
 * Rework the drawing functions, to write the pixels line by line and
 to use the drm conversion helper to support other formats.
 (Thomas Zimmermann)

v4
 * Use drm_fb_r1_to_32bit for fonts (Thomas Zimmermann)
 * Remove the default y to DRM_PANIC config option (Thomas Zimmermann)
 * Add foreground/background color config option
 * Fix the bottom lines not painted if the framebuffer height
   is not a multiple of the font height.
 * Automatically register the device to drm_panic, if the function
   get_scanout_buffer exists. (Thomas Zimmermann)

v5
 * Change the drawing API, use drm_fb_blit_from_r1() to draw the font.
 * Also add drm_fb_fill() to fill area with background color.
 * Add draw_pixel_xy() API for drivers that can't provide a linear buffer.
 * Add a flush() callback for drivers that needs to synchronize the buffer.
 * Add a void *private field, so drivers can pass private data to
   draw_pixel_xy() and flush().

v6
 * Fix sparse warning for panic_msg and logo.

v7
 * Add select DRM_KMS_HELPER for the color conversion functions.

v8
 * Register directly each plane to the panic notifier (Sima)
 * Add raw_spinlock to properly handle concurrency (Sima)
 * Register plane instead of device, to avoid looping through plane
   list, and simplify code.
 * Replace get_scanout_buffer() logic with drm_panic_set_buffer()
  (Thomas Zimmermann)
 * Removed the draw_pixel_xy() API, will see later if it can be added back.

v9
 * Revert to using get_scanout_buffer() (Sima)
 * Move get_scanout_buffer() and panic_flush() to the plane helper
   functions (Thomas Zimmermann)
 * Register all planes with get_scanout_buffer() to the panic notifier
 * Use drm_panic_lock() to protect against race (Sima)

v10
 * Move blit and fill functions back in drm_panic (Thomas Zimmermann).
 * Simplify the text drawing functions.
 * Use kmsg_dumper instead of panic_notifier (Sima).

v12
 * Use array for map and pitch in struct drm_scanout_buffer
   to support multi-planar format later. (Thomas Zimmermann)
 * Better indent struct drm_scanout_buffer declaration. (Thomas Zimmermann)

Signed-off-by: Jocelyn Falempe 
Link: https://patchwork.freedesktop.org/patch/msgid/20240409163432.352518-3-jfalempe@redhat.com
Acked-by: Daniel Vetter

drm: Add CONFIG_DRM_WERROR

2024-03-05T16:19:54+00:00

Add kconfig to enable -Werror subsystem wide. This is useful for
development and CI to keep the subsystem warning free, while avoiding
issues outside of the subsystem that kernel wide CONFIG_WERROR=y might
hit.

v2: Don't depend on COMPILE_TEST

Reviewed-by: Hamza Mahfooz  # v1
Reviewed-by: Javier Martinez Canillas 
Acked-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/afe5ed943414f7ec3044c1547503b9941686a867.1709629403.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula

drm: enable (most) W=1 warnings by default across the subsystem

2024-03-05T16:19:54+00:00

At least the i915 and amd drivers enable a bunch more compiler warnings
than the kernel defaults.

Extend most of the W=1 warnings to the entire drm subsystem by
default. Use the copy-pasted warnings from scripts/Makefile.extrawarn
with s/KBUILD_CFLAGS/subdir-ccflags-y/ to make it easier to compare and
keep up with them in the future.

This is similar to the approach currently used in i915.

Some of the -Wextra warnings do need to be disabled, just like in
Makefile.extrawarn, but take care to not disable them for W=2 or W=3
builds, depending on the warning.

There are too many -Wformat-truncation warnings to cleanly fix up front;
leave that warning disabled for now.

v3:
- Drop -Wmissing-declarations (already enabled by default)
- Drop -Wmissing-prototypes (already enabled by default)

v2:
- Drop -Wformat-truncation (too many warnings)
- Drop -Wstringop-overflow (already enabled by default)

Cc: David Airlie 
Cc: Daniel Vetter 
Cc: Maarten Lankhorst 
Cc: Maxime Ripard 
Cc: Thomas Zimmermann 
Cc: Alex Deucher 
Cc: Christian König 
Cc: Pan
Cc: Karol Herbst 
Cc: Lyude Paul 
Cc: Rob Clark 
Cc: Abhinav Kumar 
Cc: Dmitry Baryshkov 
Cc: Sean Paul 
Cc: Marijn Suijten 
Cc: Hamza Mahfooz 
Acked-by: Javier Martinez Canillas 
Acked-by: Thomas Zimmermann 
Acked-by: Sui Jingfeng 
Acked-by: Danilo Krummrich 
Acked-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/a50f1a69d5af72e913996179a75bc3a71d81ebea.1709629403.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula

drm/panthor: Allow driver compilation

2024-03-01T09:04:29+00:00

Now that all blocks are available, we can add/update Kconfig/Makefile
files to allow compilation.

v6:
- Add Maxime's and Heiko's acks
- Keep source files alphabetically ordered in the Makefile

v4:
- Add Steve's R-b

v3:
- Add a dep on DRM_GPUVM
- Fix dependencies in Kconfig
- Expand help text to (hopefully) describe which GPUs are to be
  supported by this driver and which are for panfrost.

Co-developed-by: Steven Price 
Signed-off-by: Steven Price 
Signed-off-by: Boris Brezillon 
Acked-by: Steven Price  # MIT+GPL2 relicensing,Arm
Acked-by: Grant Likely  # MIT+GPL2 relicensing,Linaro
Acked-by: Boris Brezillon  # MIT+GPL2 relicensing,Collabora
Reviewed-by: Steven Price 
Acked-by: Maxime Ripard 
Acked-by: Heiko Stuebner 
Link: https://patchwork.freedesktop.org/patch/msgid/20240229162230.2634044-13-boris.brezillon@collabora.com

drm/xe: Introduce a new DRM driver for Intel GPUs

2023-12-12T19:05:48+00:00

Xe, is a new driver for Intel GPUs that supports both integrated and
discrete platforms starting with Tiger Lake (first Intel Xe Architecture).

The code is at a stage where it is already functional and has experimental
support for multiple platforms starting from Tiger Lake, with initial
support implemented in Mesa (for Iris and Anv, our OpenGL and Vulkan
drivers), as well as in NEO (for OpenCL and Level0).

The new Xe driver leverages a lot from i915.

As for display, the intent is to share the display code with the i915
driver so that there is maximum reuse there. But it is not added
in this patch.

This initial work is a collaboration of many people and unfortunately
the big squashed patch won't fully honor the proper credits. But let's
get some git quick stats so we can at least try to preserve some of the
credits:

Co-developed-by: Matthew Brost 
Co-developed-by: Matthew Auld 
Co-developed-by: Matt Roper 
Co-developed-by: Thomas Hellström 
Co-developed-by: Francois Dugast 
Co-developed-by: Lucas De Marchi 
Co-developed-by: Maarten Lankhorst 
Co-developed-by: Philippe Lecluse 
Co-developed-by: Nirmoy Das 
Co-developed-by: Jani Nikula 
Co-developed-by: José Roberto de Souza 
Co-developed-by: Rodrigo Vivi 
Co-developed-by: Dave Airlie 
Co-developed-by: Faith Ekstrand 
Co-developed-by: Daniel Vetter 
Co-developed-by: Mauro Carvalho Chehab 
Signed-off-by: Rodrigo Vivi 
Signed-off-by: Matthew Brost

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/imagination: Add skeleton PowerVR driver

2023-11-23T08:01:45+00:00

This adds the basic skeleton of the driver. The driver registers
itself with DRM on probe. Ioctl handlers are currently implemented
as stubs.

Changes since v8:
- Corrected license identifiers

Changes since v5:
- Update compatible string & description to match marketing name
- Checkpatch fixes in to/from_pvr_device/file macros

Changes since v3:
- Clarify supported GPU generations in driver description
- Use drm_dev_unplug() when removing device
- Change from_* and to_* functions to macros
- Fix IS_PTR/PTR_ERR confusion in pvr_probe()
- Remove err_out labels in favour of direct returning
- Remove specific am62 compatible match string
- Drop MODULE_FIRMWARE()

Co-developed-by: Frank Binns 
Signed-off-by: Frank Binns 
Co-developed-by: Matt Coster 
Signed-off-by: Matt Coster 
Signed-off-by: Sarah Walker 
Signed-off-by: Donald Robson 
Reviewed-by: Maxime Ripard 
Link: https://lore.kernel.org/r/fed8a77e29620a61aed2684f802339759082cf1b.1700668843.git.donald.robson@imgtec.com
Signed-off-by: Maxime Ripard