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linux/drivers/video/fbdev/core
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Thomas Zimmermann 8813e86f6d fbdev: Remove default file-I/O implementations 
Drop the default implementations for file read, write and mmap
operations. Each fbdev driver must now provide an implementation
and select any necessary helpers. If no implementation has been
set, fbdev returns an errno code to user space. The code is the
same as if the operation had not been set in the file_operations
struct.

This change makes the fbdev helpers for I/O memory optional. Most
systems only use system-memory framebuffers via DRM's fbdev emulation.

v2:
	* warn once if I/O callbacks are missing (Javier)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231127131655.4020-33-tzimmermann@suse.de
History 2023-11-29 12:20:53 +01:00
..
bitblit.c fbcon: Fix null-ptr-deref in soft_cursor 2023-05-27 19:18:59 +02:00
cfbcopyarea.c fbdev: Warn on incorrect framebuffer access 2023-11-29 12:20:50 +01:00
cfbfillrect.c fbdev: Warn on incorrect framebuffer access 2023-11-29 12:20:50 +01:00
cfbimgblt.c fbdev: Warn on incorrect framebuffer access 2023-11-29 12:20:50 +01:00
fb_backlight.c fbdev/core: Move framebuffer and backlight helpers into separate files 2023-06-27 09:58:51 +02:00
fb_chrdev.c fbdev: Remove default file-I/O implementations 2023-11-29 12:20:53 +01:00
fb_cmdline.c fbdev: Handle video= parameter in video/cmdline.c 2023-02-20 14:56:48 +01:00
fb_ddc.c fb_ddc: Allow I2C adapters without SCL read capability 2015-09-30 10:46:55 +03:00
fb_defio.c fbdev: Push pgprot_decrypted() into mmap implementations 2023-11-29 12:20:44 +01:00
fb_draw.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fb_info.c fbdev: Document that framebuffer_alloc() returns zero'ed data 2023-07-24 16:50:39 +02:00
fb_internal.h fbdev/core: Move logo functions into separate source file 2023-09-11 15:12:35 +02:00
fb_io_fops.c fbdev: Warn on incorrect framebuffer access 2023-11-29 12:20:50 +01:00
fb_logo.c fbdev/core: Remove empty internal helpers from fb_logo.c 2023-09-11 15:12:37 +02:00
fb_notify.c video: fbdev: core: Fix kernel-doc warnings in fbmon + fb_notify 2020-12-08 18:31:56 +01:00
fb_procfs.c fbdev/core: Move procfs code to separate file 2023-06-27 09:58:51 +02:00
fb_sys_fops.c fbdev: Warn on incorrect framebuffer access 2023-11-29 12:20:50 +01:00
fbcmap.c fbdev: zero-fill colormap in fbcmap.c 2021-04-10 11:12:08 +02:00
fbcon.c Merge tag 'drm-misc-next-2023-09-27' of git://anongit.freedesktop.org/drm/drm-misc into drm-next 2023-09-29 08:27:15 +10:00
fbcon.h fbcon: Replace FBCON_FLAGS_INIT with a boolean 2022-04-07 16:52:13 +02:00
fbcon_ccw.c fbcon: Add option to enable legacy hardware acceleration 2022-02-02 15:16:26 +01:00
fbcon_cw.c fbcon: Add option to enable legacy hardware acceleration 2022-02-02 15:16:26 +01:00
fbcon_rotate.c fbcon: Drop EXPORT_SYMBOL 2020-11-17 11:00:43 +01:00
fbcon_rotate.h fbcon: Add option to enable legacy hardware acceleration 2022-02-02 15:16:26 +01:00
fbcon_ud.c fbcon: Add option to enable legacy hardware acceleration 2022-02-02 15:16:26 +01:00
fbcvt.c video: fbdev: fbcvt.c: fix printing in fb_cvt_print_name() 2022-01-30 21:19:22 +01:00
fbmem.c fbdev/core: Clean up include statements in fbmem.c 2023-09-11 15:12:38 +02:00
fbmon.c fbdev: fbmon: fix function name in kernel-doc 2023-01-16 09:37:31 +01:00
fbsysfs.c fbdev/core: Use list_for_each_entry() helper 2023-08-31 22:54:34 +02:00
Kconfig fbdev: Remove default file-I/O implementations 2023-11-29 12:20:53 +01:00
Makefile fbdev: Rename FB_SYS_FOPS token to FB_SYSMEM_FOPS 2023-11-29 12:20:42 +01:00
modedb.c fbdev/core: Use list_for_each_entry() helper 2023-08-31 22:54:34 +02:00
softcursor.c fbcon: Drop EXPORT_SYMBOL 2020-11-17 11:00:43 +01:00
svgalib.c drm/i915: Move abs_diff() to math.h 2023-08-18 10:18:59 -07:00
syscopyarea.c fbdev: Warn on incorrect framebuffer access 2023-11-29 12:20:50 +01:00
sysfillrect.c fbdev: Warn on incorrect framebuffer access 2023-11-29 12:20:50 +01:00
sysimgblt.c fbdev: Warn on incorrect framebuffer access 2023-11-29 12:20:50 +01:00
tileblit.c Revert "fbdev: Garbage collect fbdev scrolling acceleration, part 1 (from TODO list)" 2022-02-02 15:14:56 +01:00