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Author SHA1 Message Date
Thomas Zimmermann
18bc074c22 drm/fbdev: Clean up fbdev documentation 
Rewrite some docs that are not up-to-date any longer. Remove the TODO
item for fbdev-generic conversion, as the helper has been replaced. Make
documentation for DMA, SHMEM and TTM emulation available.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-44-tzimmermann@suse.de
 2024-05-02 11:33:34 +02:00
Thomas Zimmermann
aae4682e5d drm/fbdev-generic: Convert to fbdev-ttm 
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 <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-43-tzimmermann@suse.de
 2024-05-02 11:33:32 +02:00
Thomas Zimmermann
c32705b591 drm/tiny/st7735r: Use fbdev-dma 
Implement fbdev emulation with fbdev-dma. Fbdev-dma now supports
damage handling, which is required by st7735r. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: David Lechner <david@lechnology.com>
Acked-by: David Lechner <david@lechnology.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-42-tzimmermann@suse.de
 2024-05-02 11:33:32 +02:00
Thomas Zimmermann
85c8e3ec80 drm/tiny/st7586: Use fbdev-dma 
Implement fbdev emulation with fbdev-dma. Fbdev-dma now supports
damage handling, which is required by st7586. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: David Lechner <david@lechnology.com>
Acked-by: David Lechner <david@lechnology.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-41-tzimmermann@suse.de
 2024-05-02 11:33:31 +02:00
Thomas Zimmermann
01849b42e7 drm/tiny/repaper: Use fbdev-dma 
Implement fbdev emulation with fbdev-dma. Fbdev-dma now supports
damage handling, which is required by repaper. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: "Noralf Trønnes" <noralf@tronnes.org>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-40-tzimmermann@suse.de
 2024-05-02 11:33:31 +02:00
Thomas Zimmermann
9317ff6917 drm/tiny/panel-mipi-dbi: Use fbdev-dma 
Implement fbdev emulation with fbdev-dma. Fbdev-dma now supports
damage handling, which is required by panel-mipi-dbi. Avoids the
overhead of fbdev-generic's additional shadow buffering. No functional
changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: "Noralf Trønnes" <noralf@tronnes.org>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-39-tzimmermann@suse.de
 2024-05-02 11:33:30 +02:00
Thomas Zimmermann
6a09ecfe28 drm/tiny/mi0283qt: Use fbdev-dma 
Implement fbdev emulation with fbdev-dma. Fbdev-dma now supports
damage handling, which is required by mi0283qt. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: "Noralf Trønnes" <noralf@tronnes.org>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-38-tzimmermann@suse.de
 2024-05-02 11:33:30 +02:00
Thomas Zimmermann
4f229b50b2 drm/tiny/ili9486: Use fbdev-dma 
Implement fbdev emulation with fbdev-dma. Fbdev-dma now supports
damage handling, which is required by ili9486. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-37-tzimmermann@suse.de
 2024-05-02 11:33:29 +02:00
Thomas Zimmermann
18c6e51f16 drm/tiny/ili9341: Use fbdev-dma 
Implement fbdev emulation with fbdev-dma. Fbdev-dma now supports
damage handling, which is required by ili9341. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Kamlesh Gurudasani <kamlesh.gurudasani@gmail.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-36-tzimmermann@suse.de
 2024-05-02 11:33:29 +02:00
Thomas Zimmermann
5ab91447aa drm/tiny/ili9225: Use fbdev-dma 
Implement fbdev emulation with fbdev-dma. Fbdev-dma now supports
damage handling, which is required by ili9225. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: David Lechner <david@lechnology.com>
Acked-by: David Lechner <david@lechnology.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-35-tzimmermann@suse.de
 2024-05-02 11:33:28 +02:00
Thomas Zimmermann
6447acb8b3 drm/tiny/ili9163: Use fbdev-dma 
Implement fbdev emulation with fbdev-dma. Fbdev-dma now supports
damage handling, which is required by ili9163. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-34-tzimmermann@suse.de
 2024-05-02 11:33:28 +02:00
Thomas Zimmermann
a9a0f08df5 drm/tiny/hx8357d: Use fbdev-dma 
Implement fbdev emulation with fbdev-dma. Fbdev-dma now supports
damage handling, which is required by hx8357d. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-33-tzimmermann@suse.de
 2024-05-02 11:33:27 +02:00
Thomas Zimmermann
b4c3fe533c drm/rockchip: Use fbdev-dma 
Implement fbdev emulation with fbdev-dma. Fbdev-dma now supports
damage handling, which is required by rockchip. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Sandy Huang <hjc@rock-chips.com>
Cc: "Heiko Stübner" <heiko@sntech.de>
Cc: Andy Yan <andy.yan@rock-chips.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-32-tzimmermann@suse.de
 2024-05-02 11:33:27 +02:00
Thomas Zimmermann
90d0799af3 drm/renesas/shmobile: Use fbdev-dma 
Implement fbdev emulation with fbdev-dma. Fbdev-dma now supports
damage handling, which is required by shmobile. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-31-tzimmermann@suse.de
 2024-05-02 11:33:26 +02:00
Thomas Zimmermann
ff5cea0f03 drm/renesas/rz-du: Use fbdev-dma 
Implement fbdev emulation with fbdev-dma. Fbdev-dma now supports
damage handling, which is required by rz-du. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Biju Das <biju.das.jz@bp.renesas.com>
Tested-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-30-tzimmermann@suse.de
 2024-05-02 11:33:26 +02:00
Thomas Zimmermann
b3fdbd60d3 drm/renesas/rcar-du: Use fbdev-dma 
Implement fbdev emulation with fbdev-dma. Fbdev-dma now supports
damage handling, which is required by rcar-du. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-29-tzimmermann@suse.de
 2024-05-02 11:33:25 +02:00
Thomas Zimmermann
70c82ee1ac drm/panel/panel-ilitek-9341: Use fbdev-dma 
Implement fbdev emulation with fbdev-dma. Fbdev-dma now supports
damage handling, which is required by panel-ilitek-9341. Avoids
the overhead of fbdev-generic's additional shadow buffering. No
functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Neil Armstrong <neil.armstrong@linaro.org>
Cc: Jessica Zhang <quic_jesszhan@quicinc.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-28-tzimmermann@suse.de
 2024-05-02 11:33:25 +02:00
Thomas Zimmermann
0992284b4f drm/mediatek: Use fbdev-dma 
Implement fbdev emulation with fbdev-dma. Fbdev-dma now supports
damage handling, which is required by ingenic. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-27-tzimmermann@suse.de
 2024-05-02 11:33:24 +02:00
Thomas Zimmermann
c1eef5ae06 drm/ingenic: Use fbdev-dma 
Implement fbdev emulation with fbdev-dma. Fbdev-dma now supports
damage handling, which is required by ingenic. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Paul Cercueil <paul@crapouillou.net>
Acked-by: Paul Cercueil <paul@crapouillou.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-26-tzimmermann@suse.de
 2024-05-02 11:33:24 +02:00
Thomas Zimmermann
931af44404 drm/imx/lcdc: Use fbdev-dma 
Implement fbdev emulation with fbdev-dma. Fbdev-dma now supports
damage handling, which is required by lcdc. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-25-tzimmermann@suse.de
 2024-05-02 11:33:23 +02:00
Thomas Zimmermann
f379625079 drm/hisilicon/kirin: Use fbdev-dma 
Implement fbdev emulation with fbdev-dma. Fbdev-dma now supports
damage handling, which is required by kirin. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Xinliang Liu <xinliang.liu@linaro.org>
Cc: Tian Tao <tiantao6@hisilicon.com>
Cc: Xinwei Kong <kong.kongxinwei@hisilicon.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Yongqin Liu <yongqin.liu@linaro.org>
Cc: John Stultz <jstultz@google.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-24-tzimmermann@suse.de
 2024-05-02 11:33:23 +02:00
Thomas Zimmermann
386030e519 drm/arm/komeda: Use fbdev-dma 
Implement fbdev emulation with fbdev-dma. Fbdev-dma now supports
damage handling, which is required by komeda. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Liviu Dudau <liviu.dudau@arm.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-23-tzimmermann@suse.de
 2024-05-02 11:33:23 +02:00
Thomas Zimmermann
808a40b694 drm/fbdev-dma: Implement damage handling and deferred I/O 
Add support for damage handling and deferred I/O to fbdev-dma. This
enables fbdev-dma to support all DMA-memory-based DRM drivers, even
such with a dirty callback in their framebuffers.

The patch adds the code for deferred I/O and also sets a dedicated
helper for struct fb_ops.fb_mmap that support coherent mappings.

v3:
- init fb_ops with FB_GEN_DEFAULT_DEFERRED_DMAMEM_OPS() (Javier)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-22-tzimmermann@suse.de
 2024-05-02 11:33:22 +02:00
Thomas Zimmermann
d2b42634fd drm/vkms: Use fbdev-shmem 
Implement fbdev emulation with fbdev-shmem. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
Cc: Melissa Wen <melissa.srw@gmail.com>
Cc: "Maíra Canal" <mairacanal@riseup.net>
Cc: Haneen Mohammed <hamohammed.sa@gmail.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Acked-by: Maíra Canal <mcanal@igalia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-21-tzimmermann@suse.de
 2024-05-02 11:33:22 +02:00
Thomas Zimmermann
8b1bb818b2 drm/virtio: Use fbdev-shmem 
Implement fbdev emulation with fbdev-shmem. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: David Airlie <airlied@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Gurchetan Singh <gurchetansingh@chromium.org>
Cc: Chia-I Wu <olvaffe@gmail.com>
Tested-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-20-tzimmermann@suse.de
 2024-05-02 11:33:21 +02:00
Thomas Zimmermann
0f8c731477 drm/udl: Use fbdev-shmem 
Implement fbdev emulation with fbdev-shmem. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Sean Paul <sean@poorly.run>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-19-tzimmermann@suse.de
 2024-05-02 11:33:21 +02:00
Thomas Zimmermann
5134fa750e drm/tiny/simpledrm: Use fbdev-shmem 
Implement fbdev emulation with fbdev-shmem. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-18-tzimmermann@suse.de
 2024-05-02 11:33:20 +02:00
Thomas Zimmermann
049f75bd0b drm/tiny/ofdrm: Use fbdev-shmem 
Implement fbdev emulation with fbdev-shmem. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-17-tzimmermann@suse.de
 2024-05-02 11:33:20 +02:00
Thomas Zimmermann
5bd79b70a2 drm/tiny/gm12u320: Use fbdev-shmem 
Implement fbdev emulation with fbdev-shmem. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-16-tzimmermann@suse.de
 2024-05-02 11:33:19 +02:00
Thomas Zimmermann
eb9479a98c drm/tiny/cirrus: Use fbdev-shmem 
Implement fbdev emulation with fbdev-shmem. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-15-tzimmermann@suse.de
 2024-05-02 11:33:19 +02:00
Thomas Zimmermann
92e7a36891 drm/solomon: Use fbdev-shmem 
Implement fbdev emulation with fbdev-shmem. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-14-tzimmermann@suse.de
 2024-05-02 11:33:18 +02:00
Thomas Zimmermann
b1fd6da243 drm/mgag200: Use fbdev-shmem 
Implement fbdev emulation with fbdev-shmem. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Jocelyn Falempe <jfalempe@redhat.com>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-13-tzimmermann@suse.de
 2024-05-02 11:33:18 +02:00
Thomas Zimmermann
b3e328dced drm/hyperv: Use fbdev-shmem 
Implement fbdev emulation with fbdev-shmem. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Deepak Rawat <drawat.floss@gmail.com>
Reviewed-by: Deepak Rawat <drawat.floss@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-12-tzimmermann@suse.de
 2024-05-02 11:33:17 +02:00
Thomas Zimmermann
994c6277e6 drm/gud: Use fbdev-shmem 
Implement fbdev emulation with fbdev-shmem. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: "Noralf Trønnes" <noralf@tronnes.org>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-11-tzimmermann@suse.de
 2024-05-02 11:33:17 +02:00
Thomas Zimmermann
fcb3694af5 drm/ast: Use fbdev-shmem 
Implement fbdev emulation with fbdev-shmem. Avoids the overhead of
fbdev-generic's additional shadow buffering. No functional changes.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Jocelyn Falempe <jfalempe@redhat.com>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-10-tzimmermann@suse.de
 2024-05-02 11:33:16 +02:00
Thomas Zimmermann
150f431a08 drm/fbdev: Add fbdev-shmem 
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 <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-9-tzimmermann@suse.de
 2024-05-02 11:33:15 +02:00
Thomas Zimmermann
747bda7bb5 fbdev/deferred-io: Provide get_page hook in struct fb_deferred_io 
Add a callback for drivers to provide framebuffer pages to fbdev's
deferred-I/O helpers. Implementations need to acquire a reference on
the page before returning it. Returning NULL generates a SIGBUS
signal.

This will be useful for DRM's fbdev emulation with GEM-shmem buffer
objects.

v2:
- fix typo in commit message (Javier)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-8-tzimmermann@suse.de
 2024-05-02 11:33:14 +02:00
Thomas Zimmermann
1ecbc7dd29 fbdev/deferred-io: Always call get_page() for framebuffer pages 
Unconditionally call get_page() after looking up a page from the
framebuffer memory. Guarantees that we always hold a reference.

This change also refactors the code such that it can support a
driver-supplied get_page helper. This will be useful for DRM's
fbdev emulation.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-7-tzimmermann@suse.de
 2024-05-02 11:33:14 +02:00
Thomas Zimmermann
dcaefc8239 fbdev/deferred-io: Test smem_start for I/O memory 
Test smem_start before looking up pages from its value. Return
NULL if it is unset. This will result in a SIGBUS signal.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-6-tzimmermann@suse.de
 2024-05-02 11:33:14 +02:00
Thomas Zimmermann
abc79a0e0a fbdev/deferred-io: Test screen_buffer for vmalloc'ed memory 
Framebuffers in virtual memory are available via screen_buffer. Use
it instead of screen_base and avoid the type casting.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-5-tzimmermann@suse.de
 2024-05-02 11:33:13 +02:00
Thomas Zimmermann
28aea43c70 fbdev/deferred-io: Clean up pageref on lastclose 
Clean up the pageref state as part of the lastclose helper. This
only requires to clear the page's mapping field. The pageref and
page can stay in place for the next opened instance of the frame-
buffer file.

With the change in the clean-up logic, there's no further need
to look up pages during the lastclose cleanup. The code instead
uses the existing pagerefs in its look-up table. It also avoids
using smem_len, which some driver might not set correctly.

v2:
- fix typos in commit message (Javier)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-4-tzimmermann@suse.de
 2024-05-02 11:33:13 +02:00
Thomas Zimmermann
757a271376 fbdev/deferred-io: Move pageref setup into separate helper 
Set up struct fb_deferred_io_pageref in the new helper function
fb_deferred_io_pageref_lookup(), which runs when the pageref is first
taken. Remove the setup code from the rest of the code.

At first, the code allocates the memory of all pageref structs. The
setup of the various fields happens when the pageref is required.

v2:
- fix typo in commit message (Javier)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-3-tzimmermann@suse.de
 2024-05-02 11:33:12 +02:00
Thomas Zimmermann
73ef0aecba drm/fbdev-generic: Do not set physical framebuffer address 
Framebuffer memory is allocated via vzalloc() from non-contiguous
physical pages. The physical framebuffer start address is therefore
meaningless. Do not set it.

The value is not used within the kernel and only exported to userspace
on dedicated ARM configs. No functional change is expected.

v2:
- refer to vzalloc() in commit message (Javier)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: a5b44c4adb ("drm/fbdev-generic: Always use shadow buffering")
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: Zack Rusin <zackr@vmware.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: <stable@vger.kernel.org> # v6.4+
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Zack Rusin <zack.rusin@broadcom.com>
Reviewed-by: Sui Jingfeng <sui.jingfeng@linux.dev>
Tested-by: Sui Jingfeng <sui.jingfeng@linux.dev>
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-2-tzimmermann@suse.de
 2024-05-02 11:33:11 +02:00
Thomas Zimmermann
b0a835db17 Merge drm/drm-next into drm-misc-next 
Backmerging to get DRM fixes from v6.9-rc6.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
 2024-05-02 11:25:27 +02:00
Sui Jingfeng
e91a36b472 drm/panel: ili9341: Remove a superfluous else after return 
Because the else clause after the return clause is not useful, remove it
to get a better look.

Reviewed-by: Jessica Zhang <quic_jesszhan@quicinc.com>
Signed-off-by: Sui Jingfeng <sui.jingfeng@linux.dev>
Link: https://lore.kernel.org/r/20240501052402.806006-1-sui.jingfeng@linux.dev
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240501052402.806006-1-sui.jingfeng@linux.dev
 2024-05-02 09:45:31 +02:00
Jocelyn Falempe
b94605a388 lib/fonts: Allow to select fonts for drm_panic 
drm_panic has been introduced recently, and uses the same fonts as
FRAMEBUFFER_CONSOLE.

Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419132243.154466-1-jfalempe@redhat.com
 2024-05-02 09:40:17 +02:00
Sui Jingfeng
235e60653f drm/debugfs: Drop conditionals around of_node pointers 
Having conditional around the of_node pointer of the drm_bridge structure
is not necessary anymore, since drm_bridge structure always has the of_node
member since the commit d8dfccde27 ("drm/bridge: Drop conditionals around
of_node pointers").

So drop the conditional, please also note that this patch is following the
convention used by driver core, see commit c9e358dfc4 ("driver-core:
remove conditionals around devicetree pointers").

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Sui Jingfeng <sui.jingfeng@linux.dev>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240501051323.805076-1-sui.jingfeng@linux.dev
 2024-05-01 09:06:46 -07:00
Jiapeng Chong
13d56abef1 drm/vmwgfx: Remove duplicate vmwgfx_vkms.h header 
./drivers/gpu/drm/vmwgfx/vmwgfx_vkms.c: vmwgfx_vkms.h is included more than once.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=8772
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Zack Rusin <zack.rusin@broadcom.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240417012917.66046-1-jiapeng.chong@linux.alibaba.com
 2024-04-30 12:56:36 -04:00
Jocelyn Falempe
986c12d8c9 drm/fb_dma: Add checks in drm_fb_dma_get_scanout_buffer() 
plane->state and plane->state->fb can be NULL, so add a check before
dereferencing them.
Found by testing with the imx driver.

Fixes: 879b3b6511 ("drm/fb_dma: Add generic get_scanout_buffer() for drm_panic")
Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20240426121121.241366-1-jfalempe@redhat.com
 2024-04-30 16:25:46 +02:00
Chaitanya Kumar Borah
4a9a567ab1 nouveau: Add missing break statement 
Add the missing break statement that causes the following build error

	  CC [M]  drivers/gpu/drm/i915/display/intel_display_device.o
	../drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c: In function ‘build_registry’:
	../drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c:1266:3: error: label at end of compound statement
	1266 |   default:
	      |   ^~~~~~~
	  CC [M]  drivers/gpu/drm/amd/amdgpu/gfx_v10_0.o
	  HDRTEST drivers/gpu/drm/xe/compat-i915-headers/i915_reg.h
	  CC [M]  drivers/gpu/drm/amd/amdgpu/imu_v11_0.o
	make[7]: *** [../scripts/Makefile.build:244: drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.o] Error 1
	make[7]: *** Waiting for unfinished jobs....

Fixes: b58a0bc904 ("nouveau: add command-line GSP-RM registry support")
Closes: https://lore.kernel.org/all/913052ca6c0988db1bab293cfae38529251b4594.camel@nvidia.com/T/#m3c9acebac754f2e74a85b76c858c093bb1aacaf0
Closes: https://lore.kernel.org/all/CA+G9fYu7Ug0K8h9QJT0WbtWh_LL9Juc+VC0WMU_Z_vSSPDNymg@mail.gmail.com/
Tested-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240430131840.742924-1-chaitanya.kumar.borah@intel.com
 2024-04-30 16:06:18 +02:00