linux.git/drivers/video/fbdev/arcfb.c, branch v6.12.80

fbdev: Switch back to struct platform_driver::remove()

2024-10-08T19:47:18+00:00

After commit 0edb555a65d1 ("platform: Make platform_driver::remove()
return void") .remove() is (again) the right callback to implement for
platform drivers.

Convert all platform drivers below drivers/video/fbdev to use .remove(),
with the eventual goal to drop struct platform_driver::remove_new(). As
.remove() and .remove_new() have the same prototypes, conversion is done
by just changing the structure member name in the driver initializer.

While touching these files, make indention of the struct initializer
consistent in several files.

Signed-off-by: Uwe Kleine-König 
Reviewed-by: Thomas Zimmermann 
Signed-off-by: Helge Deller

fbdev/arcfb: Use generator macros for deferred I/O

2023-11-29T11:20:14+00:00

Implement the driver's fops with the generator macros for deferred
I/O. Only requires per-driver code for the on-scren scanout buffer.
The generated helpers implement reading, writing and drawing on top
of that. Also update the selected Kconfig tokens accordingly.

Actual support for deferred I/O is missing from the driver. So
writing to memory-mapped pages does not automatically update the
scanout buffer.

Signed-off-by: Thomas Zimmermann 
Cc: Jaya Kumar 
Acked-by: Javier Martinez Canillas 
Link: https://patchwork.freedesktop.org/patch/msgid/20231127131655.4020-7-tzimmermann@suse.de

fbdev/arcfb: Set FBINFO_VIRTFB flag

2023-11-29T11:20:13+00:00

The arcfb driver operates on system memory. Mark the framebuffer
accordingly. Helpers operating on the framebuffer memory will test
for the presence of this flag.

Signed-off-by: Thomas Zimmermann 
Cc: Jaya Kumar 
Reviewed-by: Javier Martinez Canillas 
Link: https://patchwork.freedesktop.org/patch/msgid/20231127131655.4020-6-tzimmermann@suse.de

fbdev: Remove FBINFO_FLAG_DEFAULT from framebuffer_alloc()'ed structs

2023-07-24T14:50:39+00:00

The flag FBINFO_FLAG_DEFAULT is 0 and has no effect, as struct
fbinfo.flags has been allocated to zero by framebuffer_alloc(). So
do not set it.

Flags should signal differences from the default values. After cleaning
up all occurrences of FBINFO_DEFAULT, the token will be removed.

v4:
	* clarify commit message (Geert, Dan)
v2:
	* fix commit message (Miguel)

Signed-off-by: Thomas Zimmermann 
Acked-by: Sam Ravnborg 
Cc: Jaya Kumar 
Cc: Helge Deller 
Cc: Peter Jones 
Cc: Sascha Hauer 
Cc: Pengutronix Kernel Team 
Cc: Shawn Guo 
Cc: Fabio Estevam 
Cc: NXP Linux Team 
Cc: Maik Broemme 
Cc: Jingoo Han 
Cc: Sudip Mukherjee 
Cc: Teddy Wang 
Cc: Michal Januszewski 
Link: https://patchwork.freedesktop.org/patch/msgid/20230715185343.7193-15-tzimmermann@suse.de

Backmerge tag 'v6.4-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into drm-next

2023-06-19T06:01:25+00:00

Linux 6.4-rc7

Need this to pull in the msm work.

Signed-off-by: Dave Airlie

fbdev: arcfb: Convert to platform remove callback returning void

2023-05-30T16:33:25+00:00

The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is (mostly) ignored
and this typically results in resource leaks. To improve here there is a
quest to make the remove callback return void. In the first step of this
quest all drivers are converted to .remove_new() which already returns
void.

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König 
Signed-off-by: Helge Deller

Merge tag 'drm-misc-next-2023-05-24' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

2023-05-26T04:23:29+00:00

drm-misc-next for v6.5:

UAPI Changes:

Cross-subsystem Changes:

 * fbdev: Move framebuffer I/O helpers to , fix naming

 * firmware: Init sysfb as early as possible

Core Changes:

 * DRM scheduler: Rename interfaces

 * ttm: Store ttm_device_funcs in .rodata

 * Replace strlcpy() with strscpy() in various places

 * Cleanups

Driver Changes:

 * bridge: analogix: Fix endless probe loop; samsung-dsim: Support
   swapping clock/data polarity; tc358767: Use devm_ Cleanups;

 * gma500: Fix I/O-memory access

 * panel: boe-tv101wum-nl6: Improve initialization;  sharp-ls043t1le001:
	  Mode fixes;  simple: Add BOE EV121WXM-N10-1850 plus DT bindings;
	  AddS6D7AA0 plus DT bindings;  Cleanups

 * ssd1307x: Style fixes

 * sun4i: Release clocks

 * msm: Fix I/O-memory access

 * nouveau: Cleanups

 * shmobile: Support Renesas; Enable framebuffer console; Various fixes

 * vkms: Fix RGB565 conversion

Signed-off-by: Dave Airlie 

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From: Thomas Zimmermann 
Link: https://patchwork.freedesktop.org/patch/msgid/20230524124237.GA25416@linux-uq9g

Merge tag 'drm-misc-next-2023-05-11' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

2023-05-19T01:37:59+00:00

drm-misc-next for 6.5:

UAPI Changes:

Cross-subsystem Changes:
 - arch: Consolidate 

Core Changes:
 - aperture: Ignore firmware framebuffers with non-primary devices
 - fbdev: Use fbdev's I/O helpers
 - sysfs: Expose DRM connector ID
 - tests: More tests for drm_rect

Driver Changes:
 - armada: Implement fbdev emulation as a client
 - bridge:
   - fsl-ldb: Support i.MX6SX
   - lt9211: Remove blanking packets
   - lt9611: Remove blanking packets
   - tc358768: Implement input bus formats reporting, fix various
     timings and clocks settings
   - ti-sn65dsi86: Implement wait_hpd_asserted
 - nouveau: Improve NULL pointer checks before dereference
 - panel:
   - nt36523: Support Lenovo J606F
   - st7703: Support Anbernic RG353V-V2
   - new panels: InnoLux G070ACE-L01
 - sun4i: Fix MIPI-DSI dotclock
 - vc4: RGB Range toggle property, BT601 and BT2020 support for HDMI
 - vkms: Convert to drmm helpers, Add reflection and rotation support

Signed-off-by: Dave Airlie 

From: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/2pxmxdzsk2ekjy6xvbpj67zrhtwvkkhfspuvdm5pfm5i54hed6@sooct7yq6z4w

fbdev: Include in various drivers

2023-05-18T09:06:19+00:00

The code uses writel() and similar I/O-memory helpers. Include
the header file to get the declarations.

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Arnd Bergmann 
Reviewed-by: Sam Ravnborg 
Reviewed-by: Sui Jingfeng 
Link: https://patchwork.freedesktop.org/patch/msgid/20230512102444.5438-5-tzimmermann@suse.de

fbdev: arcfb: Fix error handling in arcfb_probe()

2023-05-11T13:22:15+00:00

Smatch complains that:
arcfb_probe() warn: 'irq' from request_irq() not released on lines: 587.

Fix error handling in the arcfb_probe() function. If IO addresses are
not provided or framebuffer registration fails, the code will jump to
the err_addr or err_register_fb label to release resources.
If IRQ request fails, previously allocated resources will be freed.

Fixes: 1154ea7dcd8e ("[PATCH] Framebuffer driver for Arc LCD board")
Signed-off-by: Zongjie Li 
Reviewed-by: Dongliang Mu 
Signed-off-by: Helge Deller